CN113563964B

CN113563964B - Squeezing method of high-quality iron walnut oil

Info

Publication number: CN113563964B
Application number: CN202110927821.XA
Authority: CN
Inventors: 季正俊; 芮珠明; 季鸿雨; 毛颖成
Original assignee: Lijiang Yongsheng Biantun Tastyle Health Park Co ltd
Current assignee: Lijiang Yongsheng Biantun Tastyle Health Park Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2023-10-20
Anticipated expiration: 2041-08-13
Also published as: CN113563964A

Abstract

The invention relates to the technical field of walnut oil extraction, and discloses a high-quality iron walnut oil squeezing method, which comprises the following steps: the method comprises the steps of carrying out pretreatment on the walnuts by adopting pretreatment equipment, and removing various dust and impurities which are mixed between the walnuts and on the surfaces of the shell of the walnuts. And secondly, crushing the pretreated walnut by adopting walnut crushing equipment. Thirdly, adopting iron walnut shell and kernel separation equipment to separate the crushed iron walnut shells and kernels, and separating the walnut kernels and the walnut shells required by squeezing. Fourthly, squeezing treatment is carried out by adopting walnut squeezing equipment to obtain walnut primary oil. Fifthly, settling and filtering the initial oil of the walnut to obtain the high-quality walnut oil. The pressure difference process has small equipment loss and the running state of the equipment meets the design requirement, and the shutdown maintenance times of the whole production line are similar to those of a crisp walnut squeezing line, so that the industrial continuous squeezing oil extraction of the walnut is realized. The obtained walnut oil has high quality and no plasticizer component.

Description

Squeezing method of high-quality iron walnut oil

Technical Field

The invention belongs to the technical field of agricultural product processing, and particularly relates to a high-quality iron-walnut oil squeezing method.

Background

The Juglans regia is belonging to Juglandaceae. The deciduous arbor has a height of 10-30 m and a service life of more than hundreds of years, and is distributed in southwest China. The shells of the fruits are hard and heavy, and sink when meeting water, and can generate gold and stone sounds when being mutually impacted, so that the fruits can be selected to be used as a literary composition for playing with walnuts, and also can be used for manufacturing various attractive and durable artware. The oil content in the fruits is high, and the fruits are also important raw material crops for oil extraction.

Although the oil content of the iron walnut far exceeds that of the crisp walnut, the existing walnut oil pressing technology generally adopts the crisp walnut as a pressing raw material, and the problems that continuous production cannot be realized, equipment maintenance is frequent and the like exist when the iron walnut is used for pressing in the prior art.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a high-quality iron-walnut oil squeezing method, which comprises the following steps:

the method comprises the steps of carrying out pretreatment on the walnuts by adopting pretreatment equipment, and removing various dust and impurities which are mixed between the walnuts and on the surfaces of the shell of the walnuts.

And secondly, crushing the pretreated walnut by adopting walnut crushing equipment.

Thirdly, adopting iron walnut shell and kernel separation equipment to separate the crushed iron walnut shells and kernels, and separating the walnut kernels and the walnut shells required by squeezing.

Fourthly, squeezing treatment is carried out by adopting walnut squeezing equipment to obtain walnut primary oil.

Fifthly, settling and filtering the initial oil of the walnut to obtain the high-quality walnut oil.

Further, the pretreatment equipment comprises a fixing frame, a first impurity removing device, a dry cleaning device and a lifting machine. The middle part fixedly connected with fixed plate of mount, the bottom of mount is equipped with the conveyer belt. The first impurity removing device comprises: the filter bin, the air exhauster is installed to the below of establishing the filter screen in the filter bin. The lifting machine controls the lifting conveyor belt to perform directional constant-speed movement, and a first hopper is arranged at the outlet end of the lifting conveyor belt. The top end of the filter bin is communicated with the hopper through a first ventilation pipe. The belt conveyor is arranged below the discharge end of the first hopper, and the discharge end of the belt conveyor is communicated with the second ventilation pipe through the weighing hopper. One end of the second ventilation pipe is communicated with the lower part of the filtering bin, and the other end of the second ventilation pipe is communicated with the feeding end of the dry cleaning device after being inclined downwards from the weighing hopper.

The dry cleaning device comprises a dry cleaning machine, wherein two hard brushes rotating in opposite directions are arranged in the dry cleaning machine, and the feeding end of the dry cleaning machine is positioned above the brushes. The left side of dry cleaner is fixed mounting has the second driving machine, the right side of dry cleaner is fixed mounting has drain, the below fixedly connected with drain.

The preprocessing operation includes:

s1, continuously conveying walnuts to be extracted to a first hopper by controlling a lifting conveying belt through a lifting machine, forming a first preset suction force X1 at the first hopper through a first ventilation pipe by an exhaust fan, and sucking away part of impurities in a walnut material pile into a filtering bin.

S2, the walnut is transported from the first hopper through the belt conveyor and then enters the weighing hopper, and the weighing hopper obtains the weight M1 of the walnut in the current weighing hopper.

S3, the walnut with the weight M1 enters the dry cleaner through the second ventilation pipe. The exhaust fan forms a second preset suction force X2 at the weighing hopper through a second ventilation pipe.

S4, the dry cleaner controls the rotating speed Z of the hard brush according to a preset program to brush the walnut entering the dry cleaner.

S5, feeding the brushed walnut into a conveying belt from the discharge end of the dry cleaner, and performing subsequent walnut oil squeezing operation. The waste generated by scrubbing is discharged through the sewage disposal device and then enters the waste treatment device through the sewage disposal pipeline.

Furthermore, the side wall of the dry cleaner is provided with a switch door which covers the upper part of the brush, the brush body and the lower part of the brush, the switch door is provided with a switch handle, and a hinge is rotationally connected between the switch door and the dry cleaner. The inside of dry cleaner is provided with the filter plate, fixedly connected with spliced pole below the filter plate, fixedly connected with iron sheet below the spliced pole, fixedly connected with reset spring below the spliced pole, reset spring's inside is provided with the solenoid, the outside of spliced pole is provided with the positioning cylinder.

Further, a first wind power measuring device is arranged in the first ventilation pipe and close to the first hopper. And a second wind power measuring device is arranged in the second ventilation pipe and close to the weighing hopper. And a first wind power adjusting device is arranged in the filter bin and between the filter screen and the exhaust fan. And a second wind power adjusting device is arranged in the filter bin and between the second ventilation pipe and the exhaust fan.

Further, the wind power adjusting device includes: and the supporting platform is fixed on the inner wall of the filter bin. The supporting platform is internally provided with an adjusting plate capable of sliding along the supporting platform and an electric control telescopic device for controlling the position of the adjusting plate. The top end of the adjusting plate far away from the electric control telescopic device is rotationally connected with the bottom end of the air deflector. The top end of the air deflector is rotationally connected with the inner wall of the filtering bin, which is positioned at the ventilation pipe position. The air deflector is a chain plate.

Further, the first preset suction force X1 is made to be 0.1-0.3N by adjusting the lift of the exhaust fan, the first wind power adjusting device and the second wind power adjusting device. The value part of the second preset suction force X2 is as follows: x2=m9.8xk, wherein M is the average mass of the walnut for oil extraction of the current batch, and the value of K is 0.4-0.5.

Further, a first hard brush group, a second hard brush group, a third hard brush group and a fourth hard brush group are sequentially arranged in the dry cleaner from top to bottom. The brush rotating speed of the first hard brush group is Z1, the brush rotating speed of the second hard brush group is Z2, the brush rotating speed of the third hard brush group is Z3, and the brush rotating speed of the third hard brush group is Z4. Z1, Z2 and Z3 are sequentially increased.

Further, the Z1 satisfies: z1=30 [100-50×l1 (-N) ], wherein Z1 is rotation speed, unit is r/min, L1 is adjustment coefficient, and N is rockwell hardness under a unified measurement scale of walnut to be pressed. The L1 satisfies the following conditions: l1= (M1/M) - (lnN).

Further, the Z2 satisfies: Z2=L2 (-N/2) Z1, wherein Z1 and Z2 are rotational speeds, the unit is r/min, L2 is an adjusting coefficient, N is Rockwell hardness under a unified measurement scale of walnut to be pressed, and the value of L2 is 0.91-0.95.

Further, the Z3 satisfies: Z3=L3 (-N/3) Z1, wherein Z1 and Z3 are rotational speeds, the unit is r/min, L3 is an adjusting coefficient, N is Rockwell hardness under a unified measurement scale of walnut to be pressed, and the value of L3 is 0.85-0.88.

Further, the Z4 satisfies: z4=l4×z1, wherein Z1 and Z3 are rotational speeds, the unit is r/min, L3 is an adjustment coefficient, and the value of L4 is 0.75-0.78.

Further, when the calculated value of L2 (-N/2) is greater than or equal to 2, the value is 2. When the calculated value of L3 (-N/3) is more than or equal to 3, the value is 3.

Further, the walnut crushing equipment comprises: and a feeding barrel. The top end of the feeding barrel is open and communicated with the feeding device, and the edge of the bottom end of the feeding barrel is connected with the crushing material channel. The feeding barrel and the crushing material channel form a closed crushing cavity. The inside of the feed bin is arranged between the feeding device and the crushing material channel, and a material control net is arranged at a position close to the feeding device. The crushing material channel is arc-shaped, and a driving rotating shaft is arranged at the central position of the crushing material channel. The driving rotary shaft is fixedly provided with a driving rotary drum, and at least 2 groups of breaking hammers are arranged on the opposite side of the driving rotary drum.

The crushing material channel is provided with a concave channel matched with the position of the crushing hammer, and the width of the concave channel is 8-12cm. A gap H1 is formed between the top end of the side wall of the concave channel and the outer edge of the driving rotary drum. The breaking hammer is inserted into the concave channel, and the distance between the top end surface of the breaking hammer and the bottom surface of the inner side of the concave channel is H2. The bottom end of the crushing material channel is provided with a discharging hopper in a way of approaching, and the discharging hopper is communicated with a discharging opening formed in the concave channel. The steering of the driving rotating shaft is as follows: from the hopper toward the feedwell.

Further, the outer edge of the driving rotary drum is provided with a breaking hammer slot, and at least 2 fixing bolt threaded holes communicated with all breaking hammer slots are formed in the position of the breaking hammer slot on the surface of the driving rotary drum. The breaking hammer is provided with a fixing threaded hole at the corresponding position of the fixing bolt threaded hole, and the fixing bolt sequentially penetrates through the fixing bolt threaded hole and the fixing threaded hole to fix the breaking hammer inserted into the breaking hammer slot.

Further, the driving rotary drum is provided with a blanking guide between the breaking hammers and the side wall of the breaking material channel. The blanking guide between the breaking hammers is a first blanking guide, and the blanking guide between the breaking hammers and the side wall of the breaking material channel is a second blanking guide. The first blanking guide is provided with two triangular ball guide surfaces which respectively drive the rotary drum to face the inward concave channels on two sides, and the second blanking guide is provided with one triangular ball guide surface which drives the rotary drum to face the inward concave channels on the inner side.

Further, the driving rotary drum is rotationally connected with the side wall of the crushing material channel through a closed bearing. The outer side wall of the crushing material channel is provided with a leakage-proof cover which is used for wrapping the sealed bearing outside the sealed bearing.

Further, one end of the driving rotating shaft is fixed with a driving wheel, and the other end of the crushing material channel is provided with a rotating base. The driving rotating shaft is rotationally connected with the rotating base.

Further, meshes with the aperture of 20-28cm are densely distributed on the mesh surface of the material control mesh in a matrix mode, and the speed of the driving rotating shaft is 120r/min.

Furthermore, smooth inserting sheets are arranged on two sides of the material control net. The inserting piece is inserted into a movable slot formed in the inner side wall of the feeding barrel and is provided with a driving piece extending to the outside of the feeding barrel. The driving piece is fixed with the lifting and shrinking end of the electric control telescoping device.

Further, the top end surface of the side wall of the channel is a curved surface, and the surface is gradually and smoothly transited from H1=3-4 cm at the material inlet to H1=8-12 mm at the breaking hammer outlet along the rotation direction of the driving rotary drum.

Further, one of the 2 breaking hammers is provided with a 60-degree inclined chamfer surface at a side facing the rotation direction at the hammer tip. The chamfer area is 2 times the area of the top end of the hammer, and H2=10-12 mm. And the top end of the other breaking hammer is provided with an arc surface along the rotation direction, and H2=1-3 mm.

The walnut shell and kernel separating equipment comprises a first vibrating screen, a horizontal rolling screen and a second vibrating screen which are sequentially arranged.

Further, a first screen mesh which is arranged in a downward inclined mode is arranged in the first vibrating screen, the screen mesh aperture of the first screen mesh is K1, and the lower end of the first screen mesh faces the horizontal rolling screen. The part of the first vibrating screen above the first screen is communicated with the discharge end of the crusher through a feed pipe, and the bottom end of the part below is communicated with a first conveying device. The first vibrating screen is positioned at the bottom end of the first screen mesh and is communicated with the feed inlet end of the horizontal rolling screen through the second conveying device.

Further, the horizontal rolling screen comprises a cylindrical inner mesh screen which is obliquely arranged downwards. The mesh aperture of the cylindrical inner mesh screen is K2, the top end feed inlet end of the cylindrical inner mesh screen is communicated with the second conveying device, and the bottom end discharge outlet end of the cylindrical inner mesh screen is communicated with the waste bin through the third conveying device. An outer mesh screen is sleeved outside the cylindrical inner mesh screen. The outer screen consists of two cylindrical first outer screens with screen apertures K3 and a second outer screen with screen apertures K4. The horizontal rolling screen is provided with a first collector for collecting falling objects of the inner mesh screen and the outer mesh screen, and a second collector for collecting the screening objects between the inner mesh screen and the outer mesh screen. The discharge end of the first collector is communicated with the first conveying device, and the discharge end of the second collector is communicated with the second vibrating screen through the first lifting machine. And the discharge end of the first conveying device is communicated with the second vibrating screen through a second lifting machine.

Further, the second vibrating screen includes: and the second screen and the third screen are arranged in parallel up and down and are inclined downwards. The aperture of the second screen is K5, and the aperture of the third screen is K6. The screen material of the second vibrating screen is supplied to the oil press through the mixing pipe.

Further, at least 2 air blowers which are symmetrically arranged are respectively arranged outside the outer screen. The air outlet of the air blower faces the inner mesh screen from the upper side and the lower side of the outer mesh screen, and the vertical line in the center of the air outlet and the surface of the outer mesh screen are 60-80 degrees.

Further, two ends of the inner screen part of the inner screen are respectively provided with a first groove along the outer wall. The bottom surfaces of the two first grooves are provided with toothed belts, one of the first grooves is in toothed connection with at least one group of first fixed gears which are arranged up and down, and the other first groove is in toothed connection with the first fixed gears and the first driving gears which are symmetrically arranged. The first driving gear is in driving connection with the first speed reducer.

Further, opposite ends of the first outer mesh screen and the second outer mesh screen of the outer mesh screen are respectively provided with a second groove along the outer wall. The bottom surfaces of the two second grooves are provided with toothed belts, one of the two second grooves is in toothed connection with at least one group of second fixed gears which are arranged up and down, and the other second groove is in toothed connection with the second fixed gears and the second driving gears which are symmetrically arranged. The second driving gear is in driving connection with the second speed reducer.

Further, the speed of the inner screen when driven to rotate by the first speed reducer is S1, and the speed of the outer screen when driven to rotate by the second speed reducer is S2. The inner mesh screen and the outer mesh screen rotate in opposite directions, and s1=k1×s2 is satisfied, and the value range of K1 is: 0.87-0.92. The value range of the S1 is 680-720r/min.

Further, the units of K1, K2, K3, K4, K5 and K6 are all mm, and the following conditions are satisfied:

K1＝5-8。

k2 =k1+ln (S1) -lg (S2). Wherein S1 and S2 are both numerical parts, and the unit is r/min.

K3 =k1+lg (S2) -ln (S1). Wherein S1 and S2 are both numerical parts, and the unit is r/min.

K4＝K1。

K5＝K1-2。

K6＝K1-3。

Further, a first feeding pipe is arranged above the second screen, and a second feeding pipe is arranged above the third screen. The first feeding pipe is communicated with the discharge end of the first pulling machine through the flexible sleeve, and the second feeding pipe is communicated with the discharge end of the second pulling machine through the flexible sleeve. The bottom of the second screen is communicated with the mixing pipe through the first guide plate and the first weighing conveyer belt. The bottom of the third screen is communicated with the first material controller A through the second material guide plate and the fifth conveying device. And a third collector for collecting the falling objects of the sieve is arranged below the third screen, and the discharge end of the third collector is communicated with the second material controller B through a sixth conveying device. One discharge end of the first material controller A and one discharge end of the second material controller B are respectively close to the discharge end of the first weighing conveyer belt and are communicated with the mixing pipe, and the other discharge end of the first material controller A and the other discharge end of the second material controller B are respectively communicated with a waste collector. And a screw mixing mechanism is arranged in the mixing pipe.

Further, a first baffle is arranged at the top end of the second screen, and a second baffle is arranged at the top end of the third screen. The first feeding pipe side wall is fixed with the first baffle, and the discharge gate is located first baffle top below. The second feeding pipe side wall is fixed with the second baffle, and the discharge gate is located second baffle top below.

Further, the first material controller a and the second material controller B have the same mechanism, and include: a hollow material cabin. And the top end of the material cabin is communicated with the discharge end of the sixth conveying device or the fifth conveying device. The bottom of the material cabin is provided with an inclined surface which inclines downwards, and the lower end of the inclined surface faces the mixing pipe. The material cabin is provided with a discharge hole at the lower end of the inclined plane, and a first electromagnetic valve is arranged at the discharge hole. And the discharge end of the first electromagnetic valve is communicated with the second weighing conveyer belt. The material cabin is provided with a material cabin discharging pipe communicated with the waste collector at the high end of the inclined plane. And a second electromagnetic valve is arranged on the material cabin discharging pipe.

Further, a laser grating sensor is arranged at the position, close to the material cabin, of the sixth conveying device or the fifth conveying device. The grating surface of the laser grating sensor is a cross section of the sixth conveying device or the position corresponding to the fifth conveying device. And the signal output end of the laser grating sensor is in signal connection with the signal input end of the microprocessor. And the signal output end of the microprocessor is in signal connection with the control signal input end of the second electromagnetic valve. When the microprocessor receives the grating full shielding signal continuously sent by the laser grating sensor, the second electromagnetic valve is controlled to be opened for a preset time.

Furthermore, two electric push rods are symmetrically arranged outside the material cabin. And the control signal input end of the electric push rod is connected with the signal of the microprocessor. At this time, when the microprocessor receives the grating full shielding signal continuously sent by the laser grating sensor, the following control and judgment are performed:

s1, controlling two electric push rods to perform rapid synchronous reverse reciprocating movement for preset time.

S2, if the grating full shielding signal sent by the laser grating sensor disappears, the step S4 is carried out. If the grating full shielding signal sent by the laser grating sensor does not disappear, the step S3 is performed.

S3, controlling the second electromagnetic valve to be opened for a preset time, and then entering step S4.

S4, terminating.

Further, the signal output ends of the first weighing conveyer belt, the second weighing conveyer belt A of the first material controller A and the second weighing conveyer belt B of the second material controller B are respectively connected with the signal input ends of the controllers in a signal mode. The signal output end of the controller is respectively connected with the signal input ends of the second electromagnetic valve A of the first material controller A and the second electromagnetic valve B of the second material controller B. The controller calculates and obtains the total mass Y1 of the transported materials in unit time, the total mass Y2 of the transported materials in unit time and the total mass Y3 of the transported materials in unit time, wherein the total mass Y1 of the transported materials in unit time and the total mass Y3 of the transported materials are input into the mixing pipe by the first weighing conveyer belt, the second weighing conveyer belt A and the second weighing conveyer belt B through receiving weighing mass signals and transmission speed signals sent by the first weighing conveyer belt, the second weighing conveyer belt A and the second weighing conveyer belt B. The controller controls Y2=E1×Y1 and Y3=E2×Y1 by controlling the opening and closing of the second weighing conveyer belt A and the second weighing conveyer belt B, the second electromagnetic valve A and the second electromagnetic valve B, wherein the value of E1 is 0.7-0.8, and the value of E2 is 0.1-0.2.

Further, the walnut squeezing device comprises: a squeezer main body and a controller. The inside of squeezer main part is equipped with presses the storehouse, and one side top intercommunication charging tube, the material collection storehouse of recovery unit is passed through to the opposite side bottom. The material is collected the storehouse bottom and is equipped with new slant and descends and the swash plate of intercommunication waste collection device, and the lateral wall is equipped with the oil outlet pipe.

Further, a screw is horizontally arranged in the squeezing bin, and raised threads are arranged on the screw along the outer surface of the screw in a surrounding mode. One end of the screw rod is rotationally connected with the squeezing bin, and the other end of the screw rod is rotationally connected with the squeezing bin and extends to the outside of the squeezing bin to be in driving connection with the driving output end of the driving device. The screw rod is located the inside part in storehouse of squeezing, and coaxial being provided with: a squeezing screw close to the feeding pipe and an auxiliary screw close to the discharging opening. The squeezing screw is provided with squeezing threads, and the auxiliary screw is provided with auxiliary threads.

Further, the pitch of the press thread is L1, the thread height H1 and the length C1. The pitch of the auxiliary screw thread is L2, the screw height is H2, and the length is C2. And the value range of the K1 is 0.88-1.21. H1=k2×h2, where the range of values of K2 is: 0.58-0.72. C1=k3×c2, where the value range of K3 is 5.22-5.71. The values of the thread pitch, the thread height and the length are all cm.

Further, the length c=c1+c2 of the part of the screw located inside the pressing bin, and the value range of C is 130-320.

Further, the screw is rotationally connected with the wall of the squeezing bin through a bearing. And the outer wall of the squeezing bin is provided with an oil seal device at a bearing.

Further, the feeding pipe is provided with an electric control forced feeder, the driving device is a three-phase asynchronous motor, and the power end of the driving device is electrically communicated with an external power supply through a reactive power monitoring device. The top of the inside of the squeezing bin is provided with a pressure resistant plate from a feeding pipe to a discharging hole. And n pressure detectors arranged along the axis of the screw rod are arranged in one end of the compression-resistant plate, which is opposite to the squeezing bin, and n is a natural number more than or equal to 2. The bottom end face of the detection end of the pressure detector is flush with the bottom end face of the compression-resistant plate. The reactive power monitoring device and the signal output ends of the n pressure detectors are respectively connected with the signal input end of a controller component arranged in the controller in a signal way, and the control signal input ends of the driving device and the electric control forced feeder are connected with the signal output end of the controller component in a signal way.

Further, the pressure values detected by the n pressure detectors are P1 and P2. The controller component calculates a1=p2-P1, a2=p3-P2, an-1=pn-Pn-1 from the received P1, P2. And taking N seconds time intervals as X values of An X axis, taking A1 and A2 as Y values of a Y axis, and establishing A1-t and A2-t. An-1-t curves in the same coordinate system, wherein k1 and k2. are the curvatures of the current t corresponding to the A1-t and A2-t. An-1-t curves respectively. The controller component starts the following judgment when P1, P2..pn reaches a first preset value from 0 according to the calculation result:

1. When the values of P1, P2..pn exceed the second preset value, the controller assembly controls the electronically controlled positive feeder to reduce the feed amount. When the values of P1, P2. When the values of P1 and P2 are equal to or higher than a fourth preset value, the controller component controls the electric control forced feeder to stop feeding, controls the driving device to stop, and sends out a material expansion stop alarm to the alarm device.

2. When P1, P2..pn has a value below a fifth preset value, the controller assembly controls the electronically controlled positive feeder to increase the amount of feed, and if it is currently the maximum amount of feed of the electronically controlled positive feeder, the drive means is controlled to accelerate. When the values of P1 and P2 are lower than a sixth preset value, the controller component controls the electric control forced feeder to stop feeding, controls the driving device to stop, and sends out a material shortage stopping alarm to the alarm device.

Further, the controller component includes the following judgment:

3. when the values of A1 and A2 are larger than a seventh preset value, the controller component controls the driving device to control the speed of the driving device to be reduced firstly and then to return, the speed reduction range is K4 x Z1, and the speed change time is K5 x t1. The value of K4 is 0.88-0.93, and Z1 is the current rotating speed of the driving device. And the value of K5 is 11-13, and the value of t1 is the time value of the X axis.

4. When the values of A1 and A2 are lower than An eighth preset value, the controller component controls the driving device to control the speed of the driving device to be accelerated and then restored, the acceleration amplitude is K6 x Z1, and the speed change time is K7 x t1. The value of K6 is 1.22-1.28, and Z1 is the current rotating speed of the driving device. And the value of K7 is 15-16, and the value of t1 is the time value of the X axis.

Further, the controller component includes the following judgment:

5. when the values of K1 and k2. are greater than a ninth preset value, the controller component controls the electric control forced feeder to gradually reduce the feeding, and controls the driving device to gradually reduce the rotating speed, wherein the amplitude of the reduced feeding is K8 x B1, the amplitude of the reduced rotating speed is K9 x Z1, and the change time is K10 x t1. The said

K8 =k9=1- { kN/[ (lgN) -1] }, where kN is a curvature value exceeding a ninth preset value, N is a distance between one of the two pressure detectors corresponding to the curvature value, which is close to the filling tube, and N is given in cm. B1 is the feeding quantity of the current electric control forced feeder. K10 is (lgN) -1. The value of (lgN) -1 is more than or equal to 1.

6. When the values of K1 and k2. are lower than a tenth preset value, the controller component controls the electric control forced feeder to gradually increase the feeding, and controls the driving device to gradually increase the rotating speed, wherein the increasing feeding amplitude is K11 x B1, the increasing rotating speed amplitude is K12 x Z1, and the changing time is K13 x t1. K11=k12=1+ { kN/[ (lgN) -1] }, where kN is a curvature value exceeding a ninth preset value, N is a distance between one of the two pressure detectors, which is close to the feeding tube, and N is a unit of cm. B1 is the feeding quantity of the current electric control forced feeder. K13 has a value of (lgN) -1. The value of (lgN) -1 is more than or equal to 1.

Further, the compression-resistant plate is obliquely upwards arranged from the feeding pipe to the discharging opening, and an included angle of 82-84 degrees is formed between a vertical plane line of the compression-resistant plate and the axis of the screw.

Further, a transition cabin is arranged in the recovery device, the material collecting cabin is arranged in the transition cabin, the top end of the material collecting cabin is communicated with the discharging opening, and a first electric control switch door, a first rotating shaft, a second rotating shaft and a filter plate are sequentially arranged from top to bottom. And a second electric control driving device is arranged outside the material collecting bin. The first rotating shaft and the second rotating shaft are provided with stirring paddles which are arranged in a crossing manner. The filter slope sets up downwards, the material is collected the storehouse and is equipped with first bin outlet in the filter below one side bottom that is close to the filter high point, and the one side that is close to the filter low point that is located the filter top is equipped with the second bin outlet. The material collecting bin is characterized in that a second electric control switch door is arranged on the outer side wall of the material collecting bin at the first discharge hole, a third electric control switch door is arranged at the second discharge hole, and an inclined plate which is obliquely downwards arranged is fixed below the second discharge hole.

Further, the control signal input ends of the first electric control switch door, the second electric control switch door, the third electric control switch door and the second electric control driving device are respectively connected with the controller through signals.

Further, an electronic liquid level meter is arranged at the bottom end position below the filter plate inside the material collecting bin. And the signal output end of the electronic liquid level meter is in signal connection with the controller. The panel of the controller is provided with a first display device, a second display device, a third display device and a switch of the opening and closing device.

The invention has at least one of the following advantages:

1. the pressure difference process has small equipment loss and the running state of the equipment meets the design requirement, and the shutdown maintenance times of the whole production line are similar to those of a crisp walnut squeezing line, so that the industrial continuous squeezing oil extraction of the walnut is realized. The obtained walnut oil has high quality and no plasticizer component.

2. The invention can completely remove impurities such as plastic bags, dust, scraps and the like in the walnut to be extracted by a series of pretreatment, thereby producing high-quality walnut oil without plasticizer components. The pretreatment equipment comprises a special dry cleaning device, impurities and scraps contained in the surface ravines of the walnuts can be effectively cleaned, the impurities can be completely cleaned, in addition, the energy consumption of the dry cleaning machine can be effectively controlled, and the energy consumption cost of the dry cleaning step is furthest reduced while the dry cleaning purpose is achieved.

3. The continuous crushing device can realize continuous crushing of the walnut, so that the time for stopping and maintaining the crusher is consistent with the design time, and the requirement of industrial production of the walnut oil is met. Meanwhile, the invention effectively solves the problems of extrusion oil discharge and accumulation of crushed materials in the crusher, and greatly reduces the total amount of residual organic matters in the crusher, thereby effectively solving the problem of oil discharge quality degradation caused by putrefaction of the residual organic matters in the crusher and improving the oil discharge quality.

4. The invention can realize the effective separation of the crushed walnut shells and kernels, and avoid the waste of oil-pressing materials caused by the fact that walnut kernels are adhered to walnut shells and are discarded. Meanwhile, the invention effectively solves the problem of blocking the meshes of the sieve when the iron walnut shells and kernels are separated, effectively realizes continuous separation during production, and obviously reduces the maintenance times of separation equipment, thereby improving the production efficiency and reducing the production cost.

5. According to the invention, the separated walnut products with certain granularity and mass are mixed together with the walnut kernels and then fed into the oil press, so that the problem of smooth bore of the oil press can be effectively solved, and the quality of the extracted walnut oil is better. Meanwhile, the continuous long-time oil extraction of the walnut can be realized, the time interval of the shutdown maintenance of the oil press is similar to that of the existing screw oil press, and the requirement of continuous production is met.

6. The oil press has an automatic adjusting function, the working state of the oil press can be monitored in the working process of the oil press, and the oil press can maintain the high-efficiency and safe working state for a long time by adjusting the working states of the oil press and the feeding device, so that the quality of oil output is stabilized.

Drawings

FIG. 1 shows a flow chart of the high quality walnut oil of the present invention.

FIG. 2 is a schematic diagram showing the structure of the pretreatment apparatus of the present invention.

Fig. 3 is a schematic diagram showing the construction of the walnut crushing device of the invention.

Fig. 4 is a schematic diagram of a crushed material channel structure of the walnut crushing device.

FIG. 5 is a schematic diagram showing the relative relationship among the driving drum, breaking hammer and breaking material channel according to the present invention.

Fig. 6 is a schematic diagram of the structure of the driving shaft and the driving drum according to the present invention.

Fig. 7 is a schematic a-direction structure of the first blanking guide of fig. 5.

Fig. 8 is a schematic view of a direction a of the second blanking guide of fig. 5.

Fig. 9 is a schematic structural view of a material control net according to the present invention.

Fig. 10 is a schematic structural diagram of the separation device for the shell and kernel of the iron walnut of the invention.

FIG. 11 is a schematic view showing the structure of a screening portion of a horizontal type rolling screen according to the present invention.

Fig. 12 is a schematic view showing the constitution of the inner mesh screen and the outer mesh screen of the present invention.

Fig. 13 is a schematic view showing a screening portion of a second vibratory screen according to the present invention.

Fig. 14 is a schematic structural view of a material controller according to the present invention.

Fig. 15 is a schematic structural view of the walnut pressing apparatus according to the present invention.

Fig. 16 is a schematic view showing the structure of the main body of the press of the present invention.

FIG. 17 is a schematic view showing the constitution of the pressure resistant plate and the pressure detector of the present invention.

Fig. 18 is a schematic view showing the structure of the material collecting bin of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

A method for squeezing high quality walnut oil, as shown in fig. 1, comprises:

the method comprises the steps of adopting pretreatment equipment 1 to pretreat the walnut, and removing various dust and impurities which are mixed between the walnut shells and on the surface of the walnut shell.

And secondly, crushing the pretreated walnut by adopting a walnut crushing device 2.

Thirdly, adopting the iron walnut shell and kernel separation equipment 3 to separate the crushed iron walnut shells and kernels, and separating the walnut kernels and the walnut shells required by squeezing.

Fourthly, adopting the walnut squeezing equipment 4 to carry out squeezing treatment to obtain the walnut primary oil.

As shown in fig. 2, the preprocessing apparatus 1 includes: the fixing frame 101, the first impurity removing device, the dry cleaning device and the lifting machine 107. The middle part fixedly connected with fixed plate of mount 101, the bottom of mount 101 is equipped with conveyer belt 102. The first impurity removing device comprises: the filter house 103, the air exhauster is installed to the below of establishing the filter screen in the filter house 103. The lifting machine 107 controls the lifting conveyor belt 108 to perform directional constant-speed movement, and a first hopper 104 is arranged at the outlet end of the lifting conveyor belt 108. The top end of the filter house 103 is communicated with a first hopper 104 through a first ventilation pipe 105. A belt conveyor 109 is arranged below the discharging end of the first hopper 104, and the discharging end of the belt conveyor 109 is communicated with the second ventilation pipe 106 through a weighing hopper 110. One end of the second ventilation pipe 106 is communicated with the lower part of the filter bin 103, and the other end of the second ventilation pipe is communicated with the feeding end of the dry cleaning device after being inclined downwards from the weighing hopper 110.

The dry cleaning device comprises a dry cleaning machine 111, wherein two hard brushes rotating in opposite directions are arranged in the dry cleaning machine 111, and the feeding end of the dry cleaning machine 111 is positioned above the brushes. The left side of the dry cleaner 111 is fixedly provided with a second driving machine, the right side of the dry cleaner 111 is fixedly provided with a sewage disposal device, and the lower surface of the sewage disposal device is fixedly connected with a sewage disposal pipeline.

The pretreatment comprises the following steps:

s1, continuously conveying walnut to be extracted to a first hopper 104 by controlling a lifting conveyor belt 108 through a lifting machine 107, forming a first preset suction force X1 at the first hopper 104 through a first ventilation pipe 105 by an exhaust fan, and sucking away part of impurities in a walnut material pile into a filter bin 103.

S2, the walnut is transported from the first hopper 104 through the belt conveyor 109 and then enters the weighing hopper 110, and the weighing hopper 110 obtains the weight M1 of the walnut in the weighing hopper 110.

S3, walnut with the weight M1 enters the dry cleaner 111 through the second ventilation pipe 106. The suction fan creates a second preset suction force X2 at the weighing hopper 110 through the second ventilation pipe 106.

S4, the dry cleaner 111 controls the rotating speed Z of the hard brush according to a preset program to brush the walnut entering the dry cleaner 111.

S5, feeding the brushed walnut into the conveying belt 102 from the discharge end of the dry cleaner 111, and performing subsequent walnut oil squeezing operation. The waste generated by scrubbing is discharged through the sewage disposal device 505 and then enters the waste disposal device through the sewage disposal pipe 506.

The dry cleaning machine 111 is internally provided with a first hard brush set, a second hard brush set, a third hard brush set and a fourth hard brush set from top to bottom. The brush rotating speed of the first hard brush group is Z1, the brush rotating speed of the second hard brush group is Z2, the brush rotating speed of the third hard brush group is Z3, and the brush rotating speed of the third hard brush group is Z4. Z1, Z2 and Z3 are sequentially increased.

The Z1 satisfies the following conditions: z1=30 [100-50×l1 (-N) ], wherein Z1 is rotation speed, unit is r/min, L1 is adjustment coefficient, and N is rockwell hardness under a unified measurement scale of walnut to be pressed. The L1 satisfies the following conditions: l1= (M1/M) - (lnN).

The Z2 satisfies the following conditions: Z2=L2 (-N/2) Z1, wherein Z1 and Z2 are rotational speeds, the unit is r/min, L2 is an adjusting coefficient, N is Rockwell hardness under a unified measurement scale of walnut to be pressed, and the value of L2 is 0.91-0.95.

The Z3 satisfies the following conditions: Z3=L3 (-N/3) Z1, wherein Z1 and Z3 are rotational speeds, the unit is r/min, L3 is an adjusting coefficient, N is Rockwell hardness under a unified measurement scale of walnut to be pressed, and the value of L3 is 0.85-0.88.

The Z4 satisfies the following conditions: z4=l4×z1, wherein Z1 and Z3 are rotational speeds, the unit is r/min, L3 is an adjustment coefficient, and the value of L4 is 0.75-0.78.

When the calculated value of L2 (-N/2) is more than or equal to 2, the value is 2. When the calculated value of L3 (-N/3) is more than or equal to 3, the value is 3.

Because the walnut itself generally does not contain plasticizer, especially the walnut kernel part, the plasticizer appears in the walnut oil mainly because impurity pollution appears in the walnut squeezing process. In particular to plastic bags, plastic bag scraps and the like in hybrids, which are main factors causing plasticizer components to appear in walnut oil, and the plastic bags, dust, scraps and other impurities in the walnut to be squeezed can be completely removed by adopting the above-mentioned distinguishing and processing methods, so that the walnut oil without the plasticizer components can be produced.

The hard brush group which rotates in opposite directions can effectively clean the debris impurities in the surface ravines of the walnuts. However, the effect of dry cleaning is very difficult to control by adopting a single hard brush set, and walnut shells are easily cracked or even broken when the rotating speed of the brush is too high, so that a large amount of impurities are caused to interfere with the normal operation of the dry cleaner, and unnecessary waste of raw materials is caused. The brush has too slow rotating speed and cannot achieve good cleaning effect. The walnut with water can not enter the oil press although the walnut can be cleaned by water, so that efficient drying equipment is added for drying, thereby improving the production cost and reducing the efficiency. Therefore, the applicant finds that the adoption of the 4 groups of hard brushes provided by the invention can completely avoid the problems due to the matching of the special brush rotating speed requirement, and the walnut subjected to dry cleaning by the dry cleaning equipment provided by the invention has the advantages that not only does not have debris impurities in the shell grooves, but also the walnut shell is broken.

The applicant conducted 3 groups of 5 experiments each with 200 walnut batches. The first group adopts the existing dry cleaning machine with a single brush group to carry out high-speed rotary dry cleaning, and the walnut shells are cleaned, but 13-20 unequal walnuts are cracked each time. The second group adopts the existing dry cleaning machine with a single brush group to carry out conventional rotary dry cleaning at a rotary speed, and although only 0-3 walnut shells are broken at a time, more residues exist after the shells are cleaned, and the cleaning requirement cannot be met. The third group adopts the dry cleaning machine to carry out dry cleaning, and on the basis that the walnut shells are all cleaned, only one walnut shell at a time has slight cracks, and the walnut shells basically have no residues. Meanwhile, compared with the existing dry cleaning machine which performs high-speed rotation dry cleaning, the energy consumption of the dry cleaning machine is reduced by about 3.26%.

As shown in fig. 3 to 9, the walnut crushing apparatus 2 includes: and a feedwell 210. The top end of the feeding barrel 210 is open and communicated with the discharge end of the pretreatment device 1, and the bottom end of the feeding barrel is open and connected with the crushing material channel 201. The feed chute 210 and the crushing material channel 201 form a closed crushing cavity. The feeding barrel 210 is arranged between the feeding device and the crushing material channel 201, and a material control net 205 is arranged near the feeding device. The crushing material channel 201 is circular arc-shaped, and a driving rotating shaft 206 is arranged at the central position of the crushing material channel. The driving rotating shaft 206 is fixedly provided with a driving rotating drum 202, and 2 groups of breaking hammers 203 of 2 groups, 3 groups, 4 groups or other designed numbers are arranged on the opposite side of the driving rotating drum 202.

The crushing material channel 201 is provided with a concave channel 2011 matched with the position of the crushing hammer 203, and the width of the concave channel 2011 is 8-12cm. A gap H1 is formed between the top end of the channel sidewall 2012 of the concave channel 2011 and the outer edge of the driving drum 202. The breaking hammer 203 is inserted into the concave channel 2011, and the distance between the top end surface of the breaking hammer and the bottom surface of the inner side of the concave channel 2011 is H2. The bottom end of the crushing material channel 201 is provided with a blanking hopper 204 in a close way, and the blanking hopper 204 is communicated with a blanking opening formed in the concave channel 2011. The steering of the driving shaft 206 is: from hopper 204 toward feedwell 210.

The outer edge of the driving drum 202 is provided with breaking hammer slots 2023, and 2 or 3 or 4 or other designed number of fixing bolt threaded holes 2024 communicated with all breaking hammer slots 2023 are arranged on the disc surface of the driving drum 202 at the positions of the breaking hammer slots 2023. The breaking hammer 203 is provided with a fixing threaded hole at a position corresponding to the fixing threaded hole 2024, and the fixing bolt 207 sequentially passes through the fixing threaded hole 2024 and the fixing threaded hole to fix the breaking hammer 203 inserted into the breaking hammer slot 2023.

The driving drum 202 is provided with a blanking guide 208 between the breaking hammers 203 and the side wall of the breaking material channel 201. The blanking guides 208 between the breaking hammers 203 are first blanking guides 2081, and the blanking guides 208 between the breaking hammers 203 and the side walls of the breaking passage 201 are second blanking guides 2082. The first discharging guide 2081 is provided with two triangular ball guiding surfaces facing the concave channels 2011 from the driving drum 202, and the second discharging guide 2082 is provided with one triangular ball guiding surface facing the concave channels 2011 from the driving drum 202.

The driving drum 202 is rotatably connected with the side wall of the crushed material channel 201 through a closed bearing 2021. The outer side wall of the broken material channel 201 is provided with a leakage-proof cover 2022 which is used for covering the sealed bearing 2021 outside the sealed bearing 2021. This arrangement can avoid leakage of crushed material from the gap of the closed bearing 2021, significantly improving the environment at the crushing production site.

A driving wheel 2061 is fixed to one end of the driving shaft 206, and a rotating base 2062 is provided at the other end of the crushing passage 201. The drive shaft 206 is rotatably coupled to the rotary base 2062.

The mesh openings with the aperture of 20-28cm are densely distributed on the mesh surface of the material control net 205 in a matrix mode, and the speed of the driving rotating shaft 206 is 120r/min.

Smooth inserting pieces 2051 are arranged on two sides of the material control net 205. The insert 2051 is inserted into a movable slot 209 formed in the inner side wall of the feed tank 210, and is provided with a driving piece 2052 extending to the outside of the feed tank 210. The driving piece 2052 is fixed to the lifting end of the electric control telescopic device 2053. This setting drives inserted sheet 601 through automatically controlled telescoping device 603 and reciprocates along movable slot 209 to drive accuse material net 6 and carry out reciprocating motion, thereby improved the whereabouts efficiency of material, avoid the material to pile up in the mesh clearance department of accuse material net 6.

The top surface of the side wall 2012 has a curved surface, and the curved surface gradually and smoothly transits from H1=3-4 cm at the material inlet to H1=8-12 mm at the outlet of the breaking hammer 203 along the rotation direction of the driving drum 202. This arrangement can avoid that the crushed material of the required particle size is stuck in the gap.

One of the 2 breaking hammers 203 has a hammer tip provided with a 60 ° inclined chamfer on a side facing in the rotation direction. The chamfer area is 2 times the area of the top end of the hammer, and H2=10-12 mm. The other breaking hammer 203 has a circular arc surface at its top end in the rotation direction, and has h2=1-3 mm. This arrangement allows for the breaking hammer 203 to scrape the finely divided material deposited on the bottom surface in the recessed channel 2011 to different extents by means of the breaking hammer 203 of different configurations. The breaking hammer 203 with inclined chamfer surface can break the stacking layer of the stacked material and drive most of the stacked material into the discharging hopper 5. The breaking hammer 203 with the arc surface can drive the rest accumulated materials into the discharging hopper 5, and as the breaking hammer 203 is relatively close to the inner bottom surface of the concave channel 2011, the collision impact of the breaking hammer 203 and the concave channel 2011 caused by vibration can be buffered by adopting the arc surface design, and the contact surface of the breaking hammer 203 and the concave channel 2011 during vibration collision is reduced.

The crushing effect that can produce when current impact breaker broken crisp walnut satisfies the designing requirement, but crushing effect is not good when crushing indisputable walnut, through applicant's research, causes the reason of above-mentioned problem mainly to lie in: 1. the breaking hammer of the existing impact crusher is densely distributed, so that the iron walnut is easily and continuously impacted for many times before entering the breaking material channel, excessive breaking is caused, and the iron walnut mucilage flows out in a large amount, so that the accumulation adhesion between the breaking material channel and the driving rotary drum and between the breaking hammer and the indent channel is realized, the material accumulated and adhered can be fermented and deteriorated while the discharging is influenced, a large amount of bacteria are bred to pollute the breaking material, and the quality of oil output in the later period is greatly influenced. 2. The material of current impact breaker falls into quartering hammer department directly from feedway, and the material whereabouts speed of hickory nut is chaotic, and the impact force that receives can have apparent difference, can lead to producing obvious impulse difference when hickory nut and quartering hammer contact, this just leads to or increases the rotational speed that the crushing was towards, improves the impact force lower limit, and this can very big improvement breaker energy consumption also can lead to receiving the excessive hickory nut of impact force to be excessively broken, leads to the oil in advance. Or conventional power is selected, but the impact force that can lead to some hickory to receive is insufficient, leads to hickory to be driven to broken material passageway department by the jump bit, from impact breakage to oppression breakage, this can lead to hickory to receive the effect of extrusion force and go out oil in advance, greatly influences the oil yield of the broken material in later stage, and the walnut oil that appears in advance can permeate between the breaker gap, when influencing breaker work, can breed a large amount of bacteria, leads to having to frequent shut down the clearance.

Through research, the applicant can effectively solve the problems by additionally arranging the material control net with specific meshes in the embodiment and matching with the breaking hammer with specific rotating speed and installation form. The material control net can enable the walnut speed of the walnut falling into the breaking hammer to be relatively stable, the mesh with the aperture of 20-28cm is combined with the rotating speed of 120r/min of the breaking hammer which is oppositely arranged, the walnut with the speed controlled by the material control net can be effectively impacted and broken, the particle size of broken products is uniform and proper, fine broken materials and large blocks are small, most of the walnut with the impact can be broken into 8-10cm materials, the problem that a large amount of oil and a large amount of mucus are discharged in advance when the particle size of the broken materials is proper is avoided, the total adhesion amount of the broken materials is reduced, the shutdown cleaning frequency of the crusher is remarkably reduced, and the design requirement is met.

Due to the design requirement of the crusher, an anti-collision gap is necessarily arranged between the driving rotary drum and the side wall of the crushing material channel. This results in crushed material falling into these anti-collision gaps. When the crisp walnut is crushed, the crushed materials falling into the concave channel can be vibrated into the concave channel under the vibration acting force of the crusher, and the crushing effect is not affected. However, when the walnut kernels are crushed, mucus is secreted after the walnut kernels are crushed, so that crushed materials in the anti-collision gaps are easily accumulated and adhered and cannot be shaken off. The applicant can effectively pack and adhere broken materials between the channel side walls of the driving rotary drum and the broken material channel and shovel and guide the broken materials into the concave channel through additionally installing the blanking guide with the specific structure of the embodiment, so that the broken product quantity is improved on one hand, bacteria are prevented from breeding after fermentation of the packed and adhered broken materials on the other hand, and the broken materials are polluted.

As shown in fig. 10 to 14, the walnut shell and kernel separating apparatus 3 includes: a first vibrating screen 301, a horizontal rolling screen 302 and a second vibrating screen 303 are arranged in sequence.

A first screen 3011 is arranged in the first vibrating screen 301 in a downward inclined mode, the screen aperture of the first screen 3011 is K1, and the lower end of the first screen 3011 faces the horizontal rolling screen 302. The part of the first vibrating screen 301 above the first screen 3011 is communicated with the discharge end of the walnut crushing equipment 2 through a feed pipe 3012, and the part of the bottom end below is communicated with a first conveying device 304. The first vibrating screen 301 is positioned at the bottom end of the first screen 3011 and is communicated with the feed inlet end of the horizontal rolling screen 302 through a second conveying device 305.

The horizontal roller screen 302 includes a cylindrical inner screen 3021 disposed obliquely downward. The screen mesh aperture of the inner screen 3021 is K2, the top end feed inlet end of the inner screen is communicated with the second transporting device 305, and the bottom end discharge outlet end of the inner screen is communicated with the waste bin through the third transporting device 306. An outer mesh screen 3022 is sleeved outside the inner mesh screen 3021. The outer screen 3022 is composed of two first outer screens 30221 which are cylindrical and have a screen aperture of K3 and a second outer screen 30222 which has a screen aperture of K4. The horizontal rolling screen 302 is provided with a first collector 3024 for collecting screen falling objects of an inner screen 3021 and an outer screen 3022, and a second collector 3025 for collecting screen falling objects between the inner screen 3021 and the outer screen 3022. The discharge end of the first collector 3024 is communicated with the first transporting device 304, and the discharge end of the second collector 3025 is communicated with the second vibrating screen 303 through the first pulling machine 307. The discharge end of the first conveying device 304 is communicated with the second vibrating screen 303 through a second lifting machine 308.

The second vibrating screen 303 includes: a second screen 3034 and a third screen 3035 disposed in parallel up and down and inclined downward. The second screen 3034 has a pore size of K5, and the third screen 3035 has a pore size of K6. The screen material of the second vibrating screen 303 is supplied to the oil press through a mixing pipe 310.

And 2 air blowers 3026 which are symmetrically arranged are respectively arranged outside the outer screen 3022. An air outlet of the blower 3026 faces the inner screen 3021 from the upper and lower sides of the outer screen 3022, and a perpendicular line at the center of the air outlet is 60-80 ° with the surface of the outer screen 3022.

The two ends of the inner screen portion 30211 of the inner screen 3021 are respectively provided with a first groove 30212 along the outer wall. The bottom surfaces of the two first grooves 30212 are provided with toothed belts, one first groove 30212 is in toothed engagement with at least one group of first fixed gears 30213 arranged up and down, and the other first groove 30212 is in toothed engagement with the first fixed gears 30213 and the first driving gears 30214 which are symmetrically arranged. The first driving gear 30214 is in driving connection with the first speed reducer 30215.

The opposite ends of the first and second outer screens 30221 and 30222 of the outer screen 3022 are provided with a second recess 30223 along the outer wall, respectively. The bottom surfaces of the two second grooves 30223 are provided with toothed belts, one of the second grooves 30223 is in toothed engagement with at least one group of second fixed gears 30224 arranged up and down, and the other second groove 30223 is in toothed engagement with the second fixed gears 30224 and the second driving gears 30225 which are symmetrically arranged. The second driving gear 30225 is in driving connection with the second speed reducer 30226.

The speed of the inner screen 3021 when driven to rotate by the first speed reducer 30215 is S1, and the speed of the outer screen 3022 when driven to rotate by the second speed reducer 30226 is S2. The inner screen 3021 and the outer screen 3022 rotate in opposite directions, and s1=k1×s2 is satisfied, and the range of values of K1 is: 0.87-0.92. The value range of the S1 is 680-720r/min.

The units of K1, K2, K3, K4, K5 and K6 are all mm, and the following conditions are satisfied:

K1＝5-8。

K4＝K1。

K5＝K1-2。

K6＝K1-3。

A first feed pipe 3031 is arranged above the second screen 3034, and a second feed pipe 3032 is arranged above the third screen 3035. The first feed pipe 3031 communicates with the discharge end of the first puller 307 via a flexible sleeve 3033, and the second feed pipe 3032 communicates with the discharge end of the second puller 308 via a flexible sleeve 3033. The bottom end of the second screen 3034 communicates with the mixing tube 310 via a first guide plate 30381 and a first weighing conveyer 30371. The bottom end of the third screen 3035 communicates with a first material controller 309-a via a second material guide plate 30382 and a fifth transport device 30372. A third collector 30383 for collecting the screen falling objects is arranged below the third screen 3035, and the discharging end of the third collector 30383 is communicated with the second material controller 309-B through a sixth conveying device 30373. One discharge end of the first material controller 309-a and one discharge end of the second material controller 309-B are respectively communicated with the mixing pipe 310 near the discharge end of the first weighing conveyer 30371, and the other discharge end is respectively communicated with a waste collector. A screw mixing mechanism is arranged in the mixing pipe 310. The device can be used for carrying out third screening on the materials screened by the first vibrating screen 301 and the horizontal rolling screen 302, and all the components required by the walnut oil pressing materials are obtained.

A first baffle 3036 is disposed at the top end of the second screen 3034, and a second baffle 3039 is disposed at the top end of the third screen 3035. The side wall of the first feeding pipe 3031 is fixed with the first baffle 3036, and the discharge hole is positioned below the top end of the first baffle 3036. The side wall of the second feeding pipe 3032 is fixed with the second baffle 3039, and the discharge hole is positioned below the top end of the second baffle 3039. This design can avoid screening material to fall into the below from the screen cloth top, leads to unnecessary material to collect the mistake, influences the quality of walnut oil pressing material.

The first material controller 309-a and the second material controller 309-B have the same mechanism, including: a centrally controlled material compartment 3091. The top end of the material compartment 3091 communicates with the discharge end of the sixth transport device 30373 or the fifth transport device 30372. The bottom of the material compartment 3091 is provided with a downward sloping surface 3092, and the lower end of the sloping surface 3092 faces the mixing tube 310. The material compartment 3091 is provided with a discharge port at the lower end of the bevel 3092, and a first solenoid valve 309XI is provided at the discharge port. The discharge end of the first electromagnetic valve 309XI is communicated with the second weighing conveyer 3093. The bin 3091 is provided with a bin discharge pipe 3096 at the high end of the ramp 3092 which communicates with a waste collector. A second electromagnetic valve 3097 is arranged on the material cabin discharging pipe 3096.

The sixth transport device 30373 or the fifth transport device 30372 is provided with a laser grating sensor 3098 near the material compartment 3091. The grating surface of the laser grating sensor 3098 is a cross section of the sixth transport device 30373 or the fifth transport device 30372 at a corresponding position. The signal output end of the laser grating sensor 3098 is connected with the signal input end of the microprocessor 311. The signal output end of the microprocessor 311 is in signal connection with the control signal input end of the second electromagnetic valve 3097. When the microprocessor 311 receives the grating full shielding signal continuously sent by the laser grating sensor 3098, the second electromagnetic valve 3097 is controlled to be opened for a preset time. The design is mainly used for monitoring the loading amount of materials in the material cabin 901, and when the material cabin 901 is fully loaded, the grating surface of the laser grating sensor 908 is blocked, so that the grating full shielding signal continuously emitted by the laser grating sensor 908 is caused. At this time, the microprocessor 11 controls the second solenoid valve 907 to open for a preset time, so as to release the excessive material in the material chamber 901 into the waste collector.

Two electric push rods 309X are symmetrically arranged outside the material cabin 3091. The control signal input end of the electric putter 309X is connected with the signal of the microprocessor 311. At this time, when the microprocessor 311 receives the grating full shielding signal continuously emitted from the laser grating sensor 3098, the following control and judgment are performed:

S1, controlling two electric push rods 309X to perform rapid synchronous reverse reciprocating motion for preset time.

S2, if the grating full shielding signal sent by the laser grating sensor 3098 disappears, the step S4 is performed. If the grating full shielding signal from the laser grating sensor 3098 does not disappear, the process goes to step S3.

S3, controlling the second electromagnetic valve 3097 to be opened for a preset time, and then entering step S4.

S4, terminating. Since the material is fed into the material chamber 901 from the discharge end of the sixth transporting device 3073 or the fifth transporting device 3072, the material is easily formed into a pyramid shape in the material chamber 901 below the discharge end of the sixth transporting device 3073 or the fifth transporting device 3072, and when the tower tip enters the interior of the sixth transporting device 3073 or the fifth transporting device 3072, the laser grating sensor 908 continuously emits the grating full shielding signal. However, the material chamber 901 does not necessarily reach the full load standard, and the material is unnecessarily wasted by dumping the material. By adopting the arrangement, when the laser grating sensor 908 is triggered for the first time to continuously send out the grating full shielding signal, the pyramid type material stacking structure is destroyed by shaking the material cabin 901 left and right, so that the pyramid type material stacking structure tends to be tiled under the action of inertia, and unnecessary material waste is avoided.

The signal output ends of the first weighing conveyer 30371, the second weighing conveyer A3093-A of the first material controller 309-A and the second weighing conveyer B3093-B of the second material controller 309-B are respectively connected with the signal input ends of the controllers in a signal mode. The signal output ends of the controllers are respectively connected with the signal input ends of a second electromagnetic valve A3097-A of the first material controller 309-A and a second electromagnetic valve B3097-B of the second material controller 309-B. The controller calculates the total mass Y1 of the transported materials in unit time input by the first weighing conveyer belt 30371 to the mixing pipe 310, the total mass Y2 of the transported materials in unit time input by the second weighing conveyer belt A3093-A to the mixing pipe 310, and the total mass Y3 of the transported materials in unit time input by the second weighing conveyer belt B3093-B to the mixing pipe 310 by receiving the weighing mass signals and the transmission speed signals sent by the first weighing conveyer belt 30371, the second weighing conveyer belt A3093-A and the second weighing conveyer belt B3093-B. The controller controls Y2=E1×Y1 and Y3=E2×Y1 by controlling the opening and closing of the second weighing conveyer belt A3093-A, the second weighing conveyer belt B3093-B, the second electromagnetic valve A3097-A and the second electromagnetic valve B3097-B, wherein the value of E1 is 0.7-0.8, and the value of E2 is 0.1-0.2.

At this time, the crushed walnut material is first screened by vibration of the first screen 3011 in the first vibration screen 301, and the material on the screen partially enters the horizontal rolling screen 302, and the screen fall enters the first conveying device 304. The material portion is then first screened a second time within the horizontal roller screen 302 between the top end of the inner screen 3021 to the first outer screen 30221 and the screen fall through the first collector 3024 into the first conveyor 304. A third screening is then completed between the inner screen 3021 and the first outer screen 30221, and the screened product between the inner screen 3021 and the first outer screen 30221 enters the first elevator 7 through the second collector 3025 and the screened product enters the first transportation means 304 through the first collector 3024. Finally, a fourth screening is completed between the inner screen 3021 and the second outer screen 30222, and the screen contents between the inner screen 3021 and the second outer screen 30222 enter the first lifter 7 through the second collector 3025, and the screen contents enter the first transporting device 304 through the first collector 3024. Finally, the residual materials in the inner mesh screen 3021 are transported to a waste bin through the third transporting device 6. Through the screening of the device, most of the materials transported to the waste bin by the third transporting device 6 are walnut shells, and the oil pressing materials obtained through screening are more than 90% of theoretical materials.

The applicant found that the screen mesh of the horizontal rolling screen 302 is most likely to be blocked during the separation process of the walnut shells and kernels due to the viscosity of the walnut kernels. With this arrangement, on the one hand, the material blocked at the screen openings of the horizontal rolling screen 302 can be blown into the screen by the air flow blown by the blower 3026, thereby solving the problem of screen blocking. On the other hand, due to the viscosity of the walnut kernels, the shell kernels of the walnut kernels cannot be completely separated by adopting the rolling screen, and part of the walnut kernels are adhered to the shell, so that the walnut kernels are transported to a waste bin by the third transporting device 6, and the waste of materials is caused. By adopting the special combination form and the air outlet position and the air outlet direction of the air blower 3026, the air flow entering the horizontal rolling screen 302 is in a vortex shape, so that the high-strength continuous rolling of the walnut kernels adhered on the shell is driven, the walnut kernels are separated, the separation efficiency of the walnut kernels is improved, and the walnut kernels are prevented from being brought into a waste bin by the walnut shells, so that waste is caused.

The conventional common-design same-direction same-speed rotary rolling screen is combined with the design of the blower, so that the promotion effect of vortex airflow on shell and kernel separation cannot be well exerted. Therefore, the applicant has studied and improved to obtain the horizontal rolling screen 302 with a certain speed difference by adopting the reverse rotation of the inner mesh screen 3021 and the outer mesh screen 3022, so that the shell and kernel separation efficiency of the walnut is effectively improved, and the walnut kernel separation amount of the walnut is improved to more than 95%.

In addition, when the crisp walnut is used for extracting oil, the walnut kernel is always crushed to a certain number, but if the walnut kernel is completely used for extracting oil, materials are easily accumulated at the feed inlet of the oil press and do not enter the oil extraction mechanism, so that the working state of the oil press is poor, and even the oil press is down. Therefore, the applicant specially designs a shell and kernel separating device with a unique screening mechanism and a specific screen aperture so as to obtain the walnut kernels and walnut shell material components with specific particle sizes, thereby obtaining the pecan oil-pressing material in a specific combination form and realizing the continuous oil pressing of the pecan oil-pressing material by the oil press.

The applicant researches find that the technical difference between the iron walnut and the crisp walnut is remarkable when the crisp walnut is used for extracting oil, the existing crisp walnut oil extraction process is adopted, the pure walnut kernel is used for extracting oil, the oil press can cause serious material blocking phenomenon, and the machine is usually started up to extract oil and is required to be stopped for material cleaning when the oil press is not started up for 20% of the design continuous working time. Therefore, the applicant provides a three-time screening method, wherein specific components and compositions are selected through three-time screening, and the compositions are proportioned by a material controller according to specific mass to form the oil-pressing material. Through practice, the continuous oil extraction of the walnut can be realized by adopting the oil extraction materials with specific composition and specific mass ratio, the oil press can realize full-load operation, and the shutdown cleaning time interval is longer than the theoretical design time interval of the oil press.

As shown in fig. 15 to 18, the walnut press apparatus 4 includes: a press body 401, a controller 404. The inside of the squeezer main body 401 is provided with a squeezing bin 4013, the top of one side is communicated with a feeding pipe 402, and the bottom of the other side is communicated with a material collecting bin 4031 of the recovery device 403 through a blanking port 4022. The bottom of the material collection bin 4031 is provided with a new inclined plate 4032 which is obliquely downward and communicated with the waste collection device, and the side wall of the material collection bin is provided with an oil outlet pipe 4034.

A screw 4014 is horizontally arranged in the squeezing bin 4013, and raised threads 4015 are arranged on the screw 4014 along the outer surface of the screw in a surrounding mode. One end of the screw 4014 is rotatably connected with the pressing bin 4013, and the other end of the screw 4014 is rotatably connected with the pressing bin 4013 and extends to the outside of the pressing bin 4013 to be in driving connection with a driving output end of the driving device 4012. The part of the screw 4014 located inside the pressing bin 4013 is coaxially provided with: a press screw 40141 adjacent to the feed tube 402 and an auxiliary screw 40142 adjacent to the feed opening 4022. The press screw 40141 is provided with press threads 40151, and the auxiliary screw 40142 is provided with auxiliary threads 40152.

The pitch of the pressing thread 40151 is L1, the height H1 and the length C1. The pitch of the auxiliary thread 40152 is L2, the height of the thread H2 and the length of the thread C2. And the value range of the K1 is 0.88-1.21. H1=k2×h2, where the range of values of K2 is: 0.58-0.72. C1=k3×c2, where the value range of K3 is 5.22-5.71. The values of the thread pitch, the thread height and the length are all cm.

The length c=c1+c2 of the portion of the screw 4014 located inside the pressing bin 4013, and the value of C ranges from 130 to 320.

The screw 4014 is rotatably connected with the wall of the pressing bin 4013 through a bearing 4016. The outer wall of the squeezing bin 4013 is provided with an oil seal device 4017 at a bearing 4016.

The feeding pipe 402 is provided with an electric control forced feeder 4021, the driving device 4012 is a three-phase asynchronous motor, and a power supply end of the driving device 4012 is electrically communicated with an external power supply through a reactive power monitoring device 4011. The top inside the squeezing bin 4013 is provided with a pressure-resistant plate 4018 from the feeding tube 402 to the blanking port 4022. The compression plate 4018 is arranged obliquely upwards from the feeding pipe 402 to the blanking port 4022, and an included angle of 82-84 degrees is formed between a vertical plane line of the compression plate 4018 and an axis of the screw 4014. The applicant has found that by forming the pressure resistant plate 108 at a certain inclination angle, continuous squeezing of the walnut can be better achieved. By contrast, with the obliquely arranged pressure-resistant plate 108 described in example 6, the number of times of occurrence of breakage and judgment of two was reduced by 38%, the number of times of occurrence of judgment of three and judgment of four was reduced by 73%, and the number of times of occurrence of judgment of five and judgment of six was reduced by 44% as compared with the pressure-resistant plate 108 using a horizontally arranged pressure-resistant plate 108.

The compression plate 4018 is provided with n pressure detectors 4019 arranged along the axis of the screw 4014 in one end facing away from the pressing bin 4013, wherein n is a natural number greater than or equal to 2. The bottom end surface of the detection end of the pressure detector 4019 is flush with the bottom end surface of the pressure-resistant plate 4018. The signal output ends of the reactive monitor 4011 and the n pressure detectors 4019 are respectively connected with the signal input end of a controller component arranged in the controller 404, and the control signal input ends of the driving device 4012 and the electric control forced feeder 4021 are connected with the signal output end of the controller component.

The recovery device 403 is internally provided with a transition cabin 4035, the material collection cabin 4031 is arranged in the transition cabin 4035, the top end of the material collection cabin is communicated with the blanking port 4022, and a first electric control switch door is sequentially arranged from top to bottom

40311. A first rotation shaft 40312, a second rotation shaft 40313, and a filter plate 40316. The second electric control driving device 4033 is arranged outside the material collection bin 4031. The first rotation shaft 40312 and the second rotation shaft 40313 are provided with stirring paddles 40314 arranged to intersect each other. The filter 40316 slope sets up downwards, material collection storehouse 4031 is located the one side bottom that is close to the high point of filter 40316 below filter 40316 and is equipped with first bin outlet, is located the one side that is close to the low point of filter 40316 above filter 40316 and is equipped with the second bin outlet. The material collection bin 4031 lateral wall is equipped with second automatically controlled switch door 40318 in first bin outlet department, is equipped with third automatically controlled switch door 40315 in second bin outlet department to be fixed with the swash plate 4032 that the slope set up downwards below the second bin outlet.

The control signal input ends of the first electric control switch door 40311, the second electric control switch door 40318, the third electric control switch door 40315 and the second electric control driving device 4033 are respectively connected with the controller 404 in a signal manner. At this moment, the first axis of rotation of second automatically controlled drive arrangement control, second axis of rotation present mutual reverse rotation to drive the rotation of first axis of rotation, the stirring paddle on the second axis of rotation intercrossing and direction, thereby can last stirring the dregs of fat above the filter, avoid the material to pile up and lead to walnut oil can not pass through the filter at the filter. When oil is required to be discharged, the second electric control switch door is opened, so that oil in the material collection bin enters the transition cabin and then enters the filtering device from the oil outlet pipe. When the oil residue in the material collecting bin is too much, the first electric control switch door is closed at first, and the third electric control switch door is opened after a certain time, so that the material between the first electric control switch door and the filter plate slides into the inclined plate from the third electric control switch door and slides into the waste collecting device along the inclined plate. And after the collection is finished, closing the third electric control switch door, opening the first electric control switch door, and continuing oil discharge. The device can realize the effective separation of oil and oil residue and the separate collection of oil and oil residue.

Inside the material collection bin 4031, the bottom end position below the filter 40316 is provided with an electronic liquid level meter 40317. The signal output end of the electronic liquid level meter 40317 is in signal connection with the controller 404. This setting can make the controller can be according to the data information of electron liquid level meter, waits that the oil level face of filter below is less than the automatically controlled switch door bottom of third again and opens the automatically controlled switch door to avoid the problem that oil leaked in a large number from the automatically controlled switch door 3015 of third.

The pressure values detected by the n pressure detectors 4019 are P1 and P2. The controller component calculates a1=p2-P1, a2=p3-P2, an-1=pn-Pn-1 from the received P1, P2. And taking N seconds time intervals as X values of An X axis, taking A1 and A2 as Y values of a Y axis, and establishing A1-t and A2-t. An-1-t curves in the same coordinate system, wherein k1 and k2. are the curvatures of the current t corresponding to the A1-t and A2-t. An-1-t curves respectively. The controller component starts the following judgment when P1, P2..pn reaches a first preset value from 0 according to the calculation result:

1. when P1, P2..pn has a value exceeding a second preset value, the controller assembly controls the electronically controlled positive feed 4021 to reduce the feed amount. When P1, P2..pn has a value exceeding a third preset value, the controller assembly controls the electronically controlled positive feeder 4021 to stop feeding and controls the driving device 4012 to decelerate. When the values of P1, P2..pn exceed a fourth preset value, the controller assembly controls the electronically controlled forced feeder 4021 to stop feeding, and controls the driving device 4012 to stop, and sends an alarm for material expansion and stop to the alarm device.

2. When P1, P2..pn has a value below the fifth preset value, the controller assembly controls the electronically controlled positive feed 4021 to increase the amount of feed, and controls the driving device 4012 to accelerate if it is currently the maximum amount of feed of the electronically controlled positive feed 4021. When the values of P1, P2..pn are lower than a sixth preset value, the controller assembly controls the electronically controlled forced feeder 4021 to stop feeding, and controls the driving device 4012 to stop, and sends a material shortage stop alarm to the alarm device.

3. When A1, a 2..an-1 has a value exceeding a seventh preset value, the controller assembly controls the driving device 4012 to perform control of decelerating first and then recovering the speed, the deceleration amplitude is K4 x Z1, and the speed change time is K5 x t1. The value of K4 is 0.88-0.93, and Z1 is the current rotating speed of the driving device 4012. And the value of K5 is 11-13, and the value of t1 is the time value of the X axis.

4. When A1, a 2..an-1 has a value lower than An eighth preset value, the controller component controls the driving device 4012 to perform control of accelerating and then recovering the speed, the accelerating amplitude is K6 x Z1, and the speed change time is K7 x t1. The value of K6 is 1.22-1.28, and Z1 is the current rotating speed of the driving device 4012. And the value of K7 is 15-16, and the value of t1 is the time value of the X axis.

5. When K1, k2., kn-1 has a value exceeding a ninth preset value, the controller assembly controls the electronically controlled positive feed 4021 to gradually decrease the feed, and controls the driving device 4012 to gradually decrease the rotational speed by an amount of k8×b1, by an amount of k9×z1, and for a time of k10×t1. The k8=k9=1- { kN/[ (lgN) -1] }, where kN is a curvature value exceeding a ninth preset value, N is a distance between one pressure detector 4019, which is close to the filling tube 402, of the two pressure detectors 4019 corresponding to the curvature value and the filling tube 402, and N is a unit of cm. B1 is the feed amount of the current electric control forced feeder 4021. K10 is (lgN) -1. The value of (lgN) -1 is more than or equal to 1.

6. When K1, k2., kn-1 has a value below the tenth preset value, the controller assembly controls the electronically controlled positive feed 4021 to gradually increase the feed, and controls the driving device 4012 to gradually increase the rotational speed by an amount of k11×b1, by an amount of k12×z1, and for a time of change of k13×t1. K11=k12=1+ { kN/[ (lgN) -1] }, where kN is a curvature value exceeding a ninth preset value, N is a distance between one pressure detector 4019, which is close to the filling tube 402, of the two pressure detectors 4019 corresponding to the curvature value and the filling tube 402, and N is a unit of cm. B1 is the feed amount of the current electric control forced feeder 4021. K13 has a value of (lgN) -1. The value of (lgN) -1 is more than or equal to 1.

And the first judgment, the second judgment, the third judgment, the fourth judgment, the fifth judgment and the sixth judgment are mutually independent judgment, and corresponding control adjustment is generated after corresponding judgment conditions are met. When a plurality of judging conditions are met simultaneously, the priority of the first judgment and the second judgment is higher than that of the third judgment and the fourth judgment, and the priority of the third judgment and the fourth judgment is higher than that of the fifth judgment and the sixth judgment. Every time the judgment and regulation are finished once, the judgment is started again at a certain interval, and the ideal interval time is 30-90 seconds.

The applicant finds that one of the reasons that the existing screw oil press can only press crisp walnut but not press iron walnut is as follows: the walnut kernel has almost no viscosity, and under the action of forced extrusion of the extrusion screw and the movement of the driven materials, the walnut kernel materials are continuously pushed into the extrusion bin by the extrusion screw to form a high-pressure extrusion area, so that the grease in the walnut kernel is extruded and extruded. However, when the walnut kernels are pressed, the walnut kernels have high viscosity, so that the walnut kernels can form mutual adhesion. At this moment, the driving action of the pressing screw and the pressing screw is simply relied on to hardly extrude the pressed walnut material into the feeding tube for discharging, at this moment, the walnut material is accumulated in the crusher in a large amount, new materials cannot enter, and the extruded material cannot flow out, so that the pressing screw idles relatively, and the staff can only stop to clean the materials in the crusher at this moment.

According to the research of the applicant, the existing press screw is divided into an auxiliary screw and a press screw according to the specific proportion of the embodiment 1 of the application, the press screw is provided with press threads, and the auxiliary screw with the relation of the embodiment 1 of the application between the screw pitch, the screw height and the press threads is arranged on the auxiliary screw, so that the continuous feeding of the walnut material into the press section can be effectively realized, and the continuous pressing of the walnut material is realized.

Through a comparison test, the press thread in the embodiment 1 of the application is completely adopted as the thread of the screw, and the condition of no load of the crusher is improved, but the design requirement cannot be met, and the material is still required to be cleaned by stopping for a plurality of times in the expected production period. By completely adopting the auxiliary screw thread in the embodiment 1 of the application as the screw thread of the screw rod, the materials entering the squeezing bin can not realize good squeezing oil yield, a large amount of grease which is not squeezed exists in the oil residue, and the material waste is serious. By adopting the auxiliary screw and the pressing screw, the continuous pressing of the squeezer can be realized in the expected production period without stopping the machine to clean materials, and the pressing oil yield of the walnut meets the design requirement of the crusher.

Judging the first and second: the controller component can be based on reactive power monitoring device feedback data on the one hand, and monitors the load condition of the three-phase asynchronous motor in real time, so that overload of the motor is avoided and the motor is damaged. On the other hand, the pressure signal sent by the pressure detector is received, so that the internal pressure condition of each squeezing section in the squeezing bin is judged in real time, and corresponding control on the electric control forced feeder and the driving device can be formed according to the internal pressure condition, so that the working internal pressure in the squeezing bin is stabilized while the squeezing safety is ensured, and the stable control of the squeezing efficiency is realized.

Judging three and four: in order to judge the change of the adjacent internal pressure of each squeezing section in the squeezing bin, the condition that the pressure difference of the materials in a certain or some squeezing sections is overlarge/undersize due to the non-uniformity of the arrangement of the materials in the squeezing bin can be avoided based on the judgment, and the oil outlet quality can be seriously influenced by the overlarge/undersize pressure difference. Through the speed-changing callback control of the driving device, small-scale vibration can be carried out on materials in the squeezing bin, so that the internal pressure of each squeezing section is balanced, particularly, cavitation bubbles formed among the materials due to various reasons can be broken, balance adjustment of stress in the squeezing section is effectively realized, and the quality of oil squeezing is improved.

Judging five and six: the pressure difference change of each squeezing section in the squeezing cabin is prejudged, and the pressure in the squeezing cabin is preregulated by controlling the driving device and the electric control forced feeder in advance according to the prejudging result. By pre-adjusting the pressure in the press cabin, the probability of occurrence of judgments one to four can be reduced very significantly. Through a plurality of comparison tests, compared with the pre-judging mechanism without judging five and six, after the pre-judging mechanism with judging five and six is adopted, the times of judging the first and the second are reduced by 93%, and the times of judging the third and the fourth are reduced by 55%. Thereby realizing more stable control on the squeezing process and greatly improving the continuous working capacity of the oil press.

It should be noted and understood that various modifications and improvements could be made to the invention as described in detail above without departing from the spirit and scope of the invention as claimed. Accordingly, the scope of the claimed subject matter is not limited by any particular exemplary teachings presented.

Claims

1. A method for squeezing high quality walnut oil, comprising:

the method comprises the steps of (1) preprocessing the walnut seeds by preprocessing equipment to remove various dust and impurities mixed between the walnut seeds and on the surface of the walnut shell;

Crushing the pretreated walnut by adopting a walnut crushing device (2);

thirdly, adopting an iron walnut shell and kernel separation device (3) to separate the crushed iron walnut shells and kernels, and separating the walnut kernels and the walnut shells required by squeezing;

fourthly, squeezing treatment is carried out by adopting an iron walnut squeezing device (4) to obtain iron walnut primary squeezed oil;

fifthly, settling and filtering the initial oil of the walnut to obtain the high-quality walnut oil;

the pretreatment device (1) comprises: the fixing frame (101) and the first impurity removing device, the dry cleaning device and the lifting machine (107); the middle part of the fixing frame (101) is fixedly connected with a fixing plate, and the bottom of the fixing frame (101) is provided with a conveying belt (102); the first impurity removing device comprises: the filter bin (103) is internally provided with an exhaust fan below the filter screen; the lifting machine (107) controls the lifting conveying belt (108) to perform directional constant-speed movement, and a first hopper (104) is arranged at the outlet end of the lifting conveying belt (108); the top end of the filter bin (103) is communicated with a first hopper (104) through a first ventilation pipe (105); a belt conveyor (109) is arranged below the discharge end of the first hopper (104), and the discharge end of the belt conveyor (109) is communicated with the second ventilation pipe (106) through a weighing hopper (110); one end of the second ventilation pipe (106) is communicated with the lower part of the filtering bin (103), and the other end of the second ventilation pipe is communicated with the feeding end of the dry cleaning device after being inclined downwards from the weighing hopper (110);

The dry cleaning device comprises a dry cleaning machine (111), wherein two hard brushes rotating in opposite directions are arranged in the dry cleaning machine (111), and the feeding end of the dry cleaning machine (111) is positioned above the brushes; the left side of the dry cleaner (111) is fixedly provided with a second driver, the right side of the dry cleaner (111) is fixedly provided with a sewage disposal device, and the lower surface of the sewage disposal device is fixedly connected with a sewage disposal pipeline;

the pretreatment comprises the following steps:

s1, continuously conveying walnuts to be extracted to a first hopper (104) by controlling a lifting conveying belt (108) through a lifting machine (107), forming a first preset suction force X1 at the first hopper (104) through a first ventilation pipe (105) by an exhaust fan, and sucking away part of impurities in a walnut material pile into a filtering bin (103);

s2, walnut is transported from a first hopper (104) through a belt conveyor (109) and then enters a weighing hopper (110), and the weighing hopper (110) obtains the weight M1 of the walnut in the current weighing hopper (110);

s3, walnut with the weight M1 enters a dry cleaner (111) through a second ventilation pipe (106); the exhaust fan forms a second preset suction force X2 at the weighing hopper (110) through a second ventilation pipe (106);

s4, the dry cleaner (111) controls the rotating speed Z of the hard brush according to a preset program to brush the walnut entering the dry cleaner (111);

S5, feeding the brushed walnut from the discharge end of the dry cleaner (111) into a conveyor belt (102) for subsequent walnut oil squeezing operation; waste generated by scrubbing is discharged through a sewage disposal device (505) and then enters the waste treatment device through a sewage disposal pipeline (506);

the dry cleaner (111) is internally provided with a first hard brush group, a second hard brush group, a third hard brush group and a fourth hard brush group from top to bottom in sequence; the brush rotating speed of the first hard brush group is Z1, the brush rotating speed of the second hard brush group is Z2, the brush rotating speed of the third hard brush group is Z3, and the brush rotating speed of the third hard brush group is Z4; z1, Z2 and Z3 are sequentially increased;

the Z1 satisfies the following conditions: z1=30 [100-50×l1 (-N) ], wherein Z1 is rotation speed, unit is r/min, L1 is adjustment coefficient, and N is rockwell hardness under a unified measurement scale of walnut to be pressed; the L1 satisfies the following conditions: l1= (M1/M) - (lnN);

the Z2 satisfies the following conditions: Z2=L2 (-N/2) Z1, wherein Z1 and Z2 are rotational speeds in r/min, L2 is an adjusting coefficient, N is Rockwell hardness under a unified measurement scale of walnut to be pressed, and the value of L2 is 0.91-0.95;

the Z3 satisfies the following conditions: Z3=L3 (-N/3) Z1, wherein Z1 and Z3 are rotational speeds in r/min, L3 is an adjusting coefficient, N is Rockwell hardness under a unified measurement scale of walnut to be pressed, and the value of L3 is 0.85-0.88;

The Z4 satisfies the following conditions: z4=l4×z1, wherein Z1 and Z3 are rotational speeds, the unit is r/min, L3 is an adjustment coefficient, and the value of L4 is 0.75-0.78;

when the calculated value of L2 (-N/2) is more than or equal to 2, the value is 2; when the calculated value of L3 (-N/3) is more than or equal to 3, the value is 3;

the walnut crushing equipment (2) comprises: a feedwell (210); the top end of the feeding barrel (210) is open and communicated with the discharge end of the pretreatment equipment (1), and the edge of the bottom end opening is connected with the crushing material channel (201); the feeding barrel (210) and the crushing material channel (201) form a closed crushing cavity; a material control net (205) is arranged in the feeding barrel (210) between the feeding device and the crushing material channel (201) and close to the feeding device; the crushing material channel (201) is arc-shaped, and a driving rotating shaft (206) is arranged at the central position of the crushing material channel; a driving rotary drum (202) is fixedly arranged on the driving rotary shaft (206), and at least 2 groups of breaking hammers (203) of 2 groups are arranged on the opposite side of the driving rotary drum (202);

the crushing material channel (201) is provided with a concave channel (2011) matched with the position of the crushing hammer (203), and the width of the concave channel (2011) is 8-12cm; a gap H1 is formed between the top end of the channel side wall (2012) of the concave channel (2011) and the outer edge of the driving rotary drum (202); the breaking hammer (203) is inserted into the concave channel (2011), and the distance between the top end surface of the breaking hammer and the bottom surface of the inner side of the concave channel (2011) is H2; the bottom end of the crushing material channel (201) is provided with a blanking hopper (204) near, and the blanking hopper (204) is communicated with a blanking opening formed in the concave channel (2011); the steering of the driving rotating shaft (206) is as follows: from the hopper (204) towards the feedwell (210);

The outer edge of the driving rotary drum (202) is provided with breaking hammer slots (2023), and at least 2 fixing bolt threaded holes (2024) communicated with all breaking hammer slots (2023) are arranged on the disc surface of the driving rotary drum (202) at the positions of the breaking hammer slots (2023); the breaking hammer (203) is provided with a fixing threaded hole at a position corresponding to the fixing bolt threaded hole (2024), and a fixing bolt (207) sequentially penetrates through the fixing bolt threaded hole (2024) and the fixing threaded hole to fix the breaking hammer (203) inserted into the breaking hammer slot (2023);

the driving rotary drum (202) is provided with a blanking guide (208) between the breaking hammers (203) and the side wall of the breaking material channel (201); the blanking guide (208) between the breaking hammers (203) is a first blanking guide (2081), and the blanking guide (208) between the breaking hammers (203) and the side wall of the breaking material channel (201) is a second blanking guide (2082); the first blanking guide (2081) is provided with two triangular ball guide surfaces which respectively face towards the inner concave channels (2011) on two sides from the driving rotary drum (202), and the second blanking guide (2082) is provided with one triangular ball guide surface which faces towards the inner concave channels (2011) from the driving rotary drum (202);

the driving rotary drum (202) is rotationally connected with the side wall of the crushing material channel (201) through a closed bearing (2021); the outer side wall of the crushing material channel (201) is provided with a leakage-proof cover (2022) which is used for covering the sealed bearing (2021) outside the sealed bearing (2021);

One end of the driving rotating shaft (206) is fixed with a driving wheel (2061), and the other end of the crushing material channel (201) is provided with a rotating base (2062); the driving rotating shaft (206) is rotationally connected with the rotating base (2062);

the walnut shell and kernel separation equipment (3) comprises: the first vibrating screen (301), the horizontal rolling screen (302) and the second vibrating screen (303) are sequentially arranged;

a first screen (3011) which is obliquely arranged downwards is arranged in the first vibrating screen (301), the screen aperture of the first screen (3011) is K1, and the lower end of the first screen is towards the horizontal rolling screen (302); the part of the first vibrating screen (301) above the first screen cloth (3011) is communicated with the discharge end of the walnut crushing equipment (2) through a feed pipe (3012), and the bottom end of the part below is communicated with a first conveying device (304); the first vibrating screen (301) is positioned at the bottom end of the first screen cloth (3011) and is communicated with the feed inlet end of the horizontal rolling screen (302) through a second conveying device (305);

the horizontal rolling screen (302) comprises a cylindrical inner screen (3021) which is obliquely arranged downwards; the screen mesh of the inner screen (3021) has a diameter of K2, the top feed inlet end of the screen mesh is communicated with the second conveying device (305), and the bottom discharge outlet end of the screen mesh is communicated with the waste bin through the third conveying device (306); an outer mesh screen (3022) is sleeved outside the inner mesh screen (3021); the outer screen (3022) is composed of two cylindrical first outer screens (30221) having a screen aperture K3 and a second outer screen (30222) having a screen aperture K4; the horizontal rolling screen (302) is provided with a first collector (3024) for collecting screen falling objects of an inner mesh screen (3021) and an outer mesh screen (3022), and a second collector (3025) for collecting screen falling objects between the inner mesh screen (3021) and the outer mesh screen (3022); the discharging end of the first collector (3024) is communicated with the first conveying device (304), and the discharging end of the second collector (3025) is communicated with the second vibrating screen (303) through the first lifting machine (307); the discharge end of the first conveying device (304) is communicated with a second vibrating screen (303) through a second lifting machine (308);

The second vibrating screen (303) includes: a second screen (3034) and a third screen (3035) which are parallel up and down and are obliquely arranged downwards; the aperture of the second screen (3034) is K5, and the aperture of the third screen (3035) is K6; the screen material of the second vibrating screen (303) is supplied to the oil press through a mixing pipe (310);

at least 2 air blowers (3026) which are symmetrically arranged are respectively arranged outside the outer screen (3022); an air outlet of the air blower (3026) faces an inner screen (3021) from the upper side and the lower side of an outer screen (3022), and a vertical line in the center of the air outlet forms 60-80 degrees with the surface of the outer screen (3022);

two ends of an inner screen part (30211) of the inner screen (3021) are respectively provided with a first groove (30212) along the outer wall; the bottom surfaces of the two first grooves (30212) are provided with toothed belts, one first groove (30212) is in toothed connection with at least one group of first fixed gears (30213) which are arranged up and down, and the other first groove (30212) is in toothed connection with the first fixed gears (30213) and the first driving gears (30214) which are symmetrically arranged; the first driving gear (30214) is in driving connection with the first speed reducer (30215);

opposite ends of a first outer mesh screen (30221) and a second outer mesh screen (30222) of the outer mesh screen (3022) are respectively provided with a second groove (30223) along the outer wall; the bottom surfaces of the two second grooves (30223) are provided with toothed belts, one of the second grooves (30223) is in toothed connection with at least one group of second fixed gears (30224) which are arranged up and down, and the other second groove (30223) is in toothed connection with the second fixed gears (30224) and the second driving gears (30225) which are symmetrically arranged; the second driving gear (30225) is in driving connection with the second speed reducer (30226);

The speed of the inner screen (3021) when driven to rotate by the first speed reducer (30215) is S1, and the speed of the outer screen (3022) when driven to rotate by the second speed reducer (30226) is S2; the inner screen (3021) and the outer screen (3022) rotate in opposite directions, and s1=k1×s2 is satisfied, and the value range of K1 is: 0.87-0.92; the value range of the S1 is 680-720r/min;

K1＝5-8；

k2 =k1+ln (S1) -lg (S2); s1 and S2 are both numerical parts, and the unit is r/min;

k3 =k1+lg (S2) -ln (S1); s1 and S2 are both numerical parts, and the unit is r/min;

K4＝K1；

K5＝K1-2；

K6＝K1-3；

the walnut squeezing device (4) comprises: a presser body (401), a controller (404); a squeezing bin (4013) is arranged in the squeezer main body (401), the top of one side is communicated with a feeding pipe (402), and the bottom of the other side is communicated with a material collecting bin (4031) of a recovery device (403) through a blanking port (4022); the bottom of the material collection bin (4031) is provided with a new inclined plate (4032) which is obliquely downward and communicated with the waste collection device, and the side wall of the material collection bin is provided with an oil outlet pipe (4034);

a screw rod (4014) is horizontally arranged in the squeezing bin (4013), and raised threads (4015) are arranged on the screw rod (4014) along the outer surface of the screw rod in a surrounding mode; one end of the screw rod (4014) is rotationally connected with the squeezing bin (4013), and the other end of the screw rod is rotationally connected with the squeezing bin (4013) and extends to the outside of the squeezing bin (4013) to be in driving connection with the driving output end of the driving device (4012); the part of screw rod (4014) in squeezing storehouse (4013) is inside, is provided with coaxially: a press screw (40141) near the feed tube (402) and an auxiliary screw (40142) near the feed opening (4022); the pressing screw (40141) is provided with pressing threads (40151), and the auxiliary screw (40142) is provided with auxiliary threads (40152);

The screw pitch of the pressing thread (40151) is L1, the screw height H1 and the length C1; the pitch of the auxiliary thread (40152) is L2, the height H2 of the thread is C2; l1=k1×l2, wherein the value range of K1 is 0.88-1.21; h1=k2×h2, where the range of values of K2 is: 0.58-0.72; c1=k3×c2, where the value range of K3 is 5.22-5.71; the values of the thread pitch, the thread height and the length are all cm;

the length C=C1+C2 of the part of the screw (4014) positioned in the pressing bin (4013), and the value range of C is 130-320;

the screw (4014) is rotationally connected with the wall of the squeezing bin (4013) through a bearing (4016); an oil seal device (4017) is arranged on the outer wall of the pressing bin (4013) at a bearing (4016);

an electric control forced feeder (4021) is arranged on the feeding pipe (402), the driving device (4012) is a three-phase asynchronous motor, and a power supply end of the driving device (4012) is electrically communicated with an external power supply through a reactive power monitoring device (4011); the top of the inside of the squeezing bin (4013) is provided with a compression-resistant plate (4018) from the charging pipe (402) to the blanking port (4022); the compression-resistant plate (4018) is obliquely upwards arranged from the feeding pipe (402) to the blanking port (4022), and an included angle of 82-84 degrees is formed between a vertical plane line of the compression-resistant plate (4018) and the axis of the screw (4014); n pressure detectors (4019) which are arranged along the axis of the screw (4014) are arranged in one end of the compression plate (4018) opposite to the pressing bin (4013), and n is a natural number more than or equal to 2; the bottom end face of the detection end of the pressure detector (4019) is flush with the bottom end face of the pressure-resistant plate (4018); the reactive power monitoring device (4011) and the signal output ends of n pressure detectors (4019) are respectively in signal connection with the signal input end of a controller component arranged in the controller (404), and the control signal input ends of the driving device (4012) and the electric control forced feeder (4021) are in signal connection with the signal output end of the controller component;

A transition cabin (4035) is arranged in the recovery device (403), the material collection cabin (4031) is arranged in the transition cabin (4035), the top end of the material collection cabin is communicated with the blanking port (4022), and a first electric control switch door (40311), a first rotating shaft (40312), a second rotating shaft (40313) and a filter plate (40316) are sequentially arranged from top to bottom; a second electric control driving device (4033) is arranged outside the material collection bin (4031); the first rotating shaft (40312) and the second rotating shaft (40313) are provided with stirring paddles (40314) which are arranged in a crossing manner; the filter plate (40316) is obliquely downwards arranged, a first discharge hole is formed in the bottom end of one side, close to the high point of the filter plate (40316), of the material collection bin (4031) below the filter plate (40316), and a second discharge hole is formed in one side, close to the low point of the filter plate (40316), of the upper side of the filter plate (40316); the outer side wall of the material collecting bin (4031) is provided with a second electric control switch door (40318) at the first discharge hole, a third electric control switch door (40315) is arranged at the second discharge hole, and an inclined plate (4032) which is obliquely downwards arranged is fixed below the second discharge hole;

the control signal input ends of the first electric control switch door (40311), the second electric control switch door (40318), the third electric control switch door (40315) and the second electric control driving device (4033) are respectively connected with the controller (404) in a signal manner;

An electronic liquid level meter (40317) is arranged in the material collection bin (4031) and positioned at the bottom end position below the filter plate (40316); the signal output end of the electronic liquid level meter (40317) is in signal connection with the controller (404);

the pressure values detected by the n pressure detectors (4019) are P1, P2..pn; the controller assembly receives P1, P2..pn, calculating a1=p2-P1, a2=p3-P2, an-1=pn-Pn-1; taking N second time intervals as X values of An X axis, taking A1 and A2..an-1 as Y values of a Y axis, and establishing A1-t and A2-t..an-1-t curves in the same coordinate system, wherein k1 and k2...kn-1 are curvatures of the current t corresponding to the A1-t and A2-t..an-1-t curves respectively; the controller component starts the following judgment when P1, P2..pn reaches a first preset value from 0 according to the calculation result:

1. when the values of P1, P2..Pn exceeds a second preset value, the controller component controls the electric control forced feeder (4021) to reduce the feeding amount; when the values of P1 and P2 are higher than a third preset value, the controller component controls the electric control forced feeder (4021) to stop feeding and controls the driving device (4012) to decelerate; when the values of P1 and P2 are equal to or higher than a fourth preset value, the controller component controls the electric control forced feeder (4021) to stop feeding and controls the driving device (4012) to stop, and sends out a material expansion stop alarm to the alarm device;

2. When the values of P1, P2..Pn are lower than a fifth preset value, the controller component controls the electric control forced feeder (4021) to increase the feeding amount, and controls the driving device (4012) to accelerate if the feeding amount is the maximum feeding amount of the electric control forced feeder (4021); when the values of P1 and P2 are lower than a sixth preset value, the controller component controls the electric control forced feeder (4021) to stop feeding, controls the driving device (4012) to stop, and sends out a material shortage stopping alarm to the alarm device;

3. when the values of A1 and A2 are larger than a seventh preset value, the controller component controls the driving device (4012) to control the speed to be reduced firstly and then restored, the reduction amplitude is K4 x Z1, and the speed change time is K5 x t1; the value of K4 is 0.88-0.93, and Z1 is the current rotating speed of the driving device (4012); the value of K5 is 11-13, and t1 is the time value of the X axis;

4. when the values of A1 and A2 are lower than An eighth preset value, the controller component controls the driving device (4012) to control the speed of acceleration and then recovery, the acceleration amplitude is K6 x Z1, and the speed change time is K7 x t1; the value of K6 is 1.22-1.28, and Z1 is the current rotating speed of the driving device (4012); the value of K7 is 15-16, and t1 is the time value of the X axis;

5. When K1, k2., kn-1 has a value exceeding a ninth preset value, the controller assembly controls the electronically controlled positive feeder (4021) to gradually decrease the feed, and controls the driving device (4012) to gradually decrease the rotational speed by an amount of k8×b1, by an amount of k9×z1, and by a change time of k10×t1; k8=k9=1- { kN/[ (lgN) -1] }, where kN is a curvature value exceeding a ninth preset value, N is a distance between one pressure detector (4019) of the two pressure detectors (4019) corresponding to the curvature value, which is close to the feeding tube (402), and N is a unit of cm; b1 is the feeding amount of the current electric control forced feeder (4021); k10 has a value of (lgN) -1; the value of (lgN) -1 is more than or equal to 1;

when the values of K1 and k2. are lower than a tenth preset value, the controller component controls the electric control forced feeder (4021) to gradually increase the feeding, controls the driving device (4012) to gradually increase the rotating speed, the amplitude of the increased feeding is K11 and B1, the amplitude of the increased rotating speed is K12 and Z1, and the change time is K13 and t1; k11=k12=1+ { kN/[ (lgN) -1] }, where kN is a curvature value exceeding a ninth preset value, N is a distance between one pressure detector (4019) of the two pressure detectors (4019) corresponding to the curvature value, which is close to the filling pipe (402), and N is a unit of cm; b1 is the feeding amount of the current electric control forced feeder (4021); k13 has a value of (lgN) -1; the value of (lgN) -1 is more than or equal to 1.

2. The method for squeezing high-quality walnut oil according to claim 1, wherein meshes with the aperture of 20-28cm are densely arranged on the mesh surface of the material control mesh (205) in a matrix, and the speed of the driving rotating shaft (206) is 120r/min;

smooth inserting sheets (2051) are arranged on two sides of the material control net (205); the inserting piece (2051) is inserted into a movable slot (209) formed in the inner side wall of the feeding barrel (210), and a driving piece (2052) extending to the outside of the feeding barrel (210) is arranged; the driving piece (2052) is fixed with the lifting end of the electric control telescopic device (2053);

the top end surface of the side wall (2012) of the channel is a curved surface, and the curved surface gradually and smoothly transits from H1=3-4 cm at the material inlet to H1=8-12 mm at the outlet of the breaking hammer (203) along the rotation direction of the driving rotary drum (202);

one of the 2 breaking hammers (203) is provided with a 60-degree inclined chamfer surface at one side facing the rotation direction at the hammer top end; the chamfer area is 2 times of the area of the top end of the hammer, and H2=10-12 mm; the other breaking hammer (203) is provided with an arc surface at the top end along the rotation direction, and H2=1-3 mm.

3. The method for squeezing high quality walnut oil according to claim 1, characterized in that a first feed pipe (3031) is arranged above the second screen (3034), and a second feed pipe (3032) is arranged above the third screen (3035); the first feeding pipe (3031) is communicated with the discharge end of the first lifting machine (307) through a flexible sleeve (3033), and the second feeding pipe (3032) is communicated with the discharge end of the second lifting machine (308) through the flexible sleeve (3033); the bottom end of the second screen (3034) is communicated with the mixing pipe (310) through a first material guide plate (30381) and a first weighing conveyer belt (30371); the bottom end of the third screen (3035) is communicated with a first material controller (309-A) through a second material guide plate (30382) and a fifth conveying device (30372); a third collector (30383) for collecting the falling objects of the sieve is arranged below the third screen (3035), and the discharge end of the third collector (30383) is communicated with a second material controller (309-B) through a sixth conveying device (30373); one discharge end of the first material controller (309-A) and one discharge end of the second material controller (309-B) are respectively close to the discharge end of the first weighing conveyer belt (30371) and are communicated with the mixing pipe (310), and the other discharge end of the first material controller and the other discharge end of the second material controller are respectively communicated with a waste collector; a screw mixing mechanism is arranged in the mixing pipe (310);

A first baffle plate (3036) is arranged at the top end of the second screen cloth (3034), and a second baffle plate (3039) is arranged at the top end of the third screen cloth (3035); the side wall of the first feeding pipe (3031) is fixed with the first baffle plate (3036), and the discharge hole is positioned below the top end of the first baffle plate (3036); the side wall of the second feeding pipe (3032) is fixed with a second baffle plate (3039), and the discharge hole is positioned below the top end of the second baffle plate (3039);

the first material controller (309-A) and the second material controller (309-B) have the same mechanism, and include: a centrally controlled material compartment (3091); the top end of the material cabin (3091) is communicated with the discharge end of the sixth conveying device (30373) or the fifth conveying device (30372); the bottom of the material cabin (3091) is provided with an inclined surface (3092) which is inclined downwards, and the lower end of the inclined surface (3092) faces the mixing pipe (310); the material cabin (3091) is provided with a discharge hole at the lower end of the inclined plane (3092), and a first electromagnetic valve (309 XI) is arranged at the discharge hole; the discharge end of the first electromagnetic valve (309 XI) is communicated with a second weighing conveyer belt (3093); the material cabin (3091) is provided with a material cabin discharging pipe (3096) communicated with the waste collector at the high end of the inclined plane (3092); a second electromagnetic valve (3097) is arranged on the material cabin discharging pipe (3096);

A laser grating sensor (3098) is arranged at the position, close to the material cabin (3091), of the sixth conveying device (30373) or the fifth conveying device (30372); the grating surface of the laser grating sensor (3098) is a cross section of a position corresponding to the sixth conveying device (30373) or the fifth conveying device (30372); the signal output end of the laser grating sensor (3098) is in signal connection with the signal input end of the microprocessor (311); the signal output end of the microprocessor (311) is in signal connection with the control signal input end of the second electromagnetic valve (3097); when the microprocessor (311) receives a grating full shielding signal continuously sent by the laser grating sensor (3098), the second electromagnetic valve (3097) is controlled to be opened for a preset time;

two electric push rods (309X) are symmetrically arranged outside the material cabin (3091); the control signal input end of the electric push rod (309X) is connected with the signal of the microprocessor (311); at this time, when the microprocessor (311) receives the grating full shielding signal continuously emitted by the laser grating sensor (3098), the following control and judgment are performed:

s1, controlling two electric push rods (309X) to perform rapid synchronous reverse reciprocating movement for preset time;

s2, if the grating full shielding signal sent by the laser grating sensor (3098) disappears, entering step S4; if the grating full shielding signal sent by the laser grating sensor (3098) does not disappear, the step S3 is entered;

S3, controlling a second electromagnetic valve (3097) to be opened for a preset time, and then entering a step S4;

s4, terminating;

the signal output ends of the first weighing conveyer belt (30371), the second weighing conveyer belt A (3093-A) of the first material controller (309-A) and the second weighing conveyer belt B (3093-B) of the second material controller (309-B) are respectively connected with the signal input end of the controller in a signal manner; the signal output ends of the controllers are respectively connected with the signal input ends of a second electromagnetic valve A (3097-A) of the first material controller (309-A) and a second electromagnetic valve B (3097-B) of the second material controller (309-B) in a signal manner; the controller calculates and obtains the total mass Y1 of the transported materials in unit time, which is input by the first weighing conveyer belt (30371) to the mixing pipe (310), the total mass Y2 of the transported materials in unit time, which is input by the second weighing conveyer belt A (3093-A) to the mixing pipe (310), and the total mass Y3 of the transported materials in unit time, which is input by the second weighing conveyer belt B (3093-B) to the mixing pipe (310), by receiving weighing mass signals and transmission speed signals sent by the first weighing conveyer belt (30371), the second weighing conveyer belt A (3093-A) and the second weighing conveyer belt B (3093-B); the controller controls Y2=E1×Y1 and Y3=E2×Y1 by controlling the opening and closing of the second weighing conveyer belt A (3093-A), the second weighing conveyer belt B (3093-B), the second electromagnetic valve A (3097-A) and the second electromagnetic valve B (3097-B), wherein the value of E1 is 0.7-0.8, and the value of E2 is 0.1-0.2.