CN210332794U - Experiment milling machine - Google Patents

Abstract

In order to solve the milling machine and be difficult to observe inside condition, easy card material and dismantle and clear up loaded down with trivial details problem in the course of the work, the utility model provides an experiment milling machine mainly includes motor, hopper, mill, sieve material device and transmission system, the mill mainly comprises grinding roller seat, grinding roller, sieve material device comprises bottom plate, round sieve seat, round sieve cover and round sieve, in addition, still including being used for the wind-force conveying system who bloies to the inside grinding room of grinding roller seat, the grinding roller terminal surface fixedly connected with grinding roller apron of grinding roller seat front end, grinding roller apron comprises metal frame and the transparent cover of inlaying in metal frame, through the indoor material grinding condition of observation grinding that transparent cover can be convenient, simultaneously through the wind-force conveying system who sets up, improves grinding efficiency, difficult emergence is blockked up.

Description

Experiment milling machine

Technical Field

The utility model relates to a milling machine technical field, in particular to experiment milling machine.

Background

The small-size experiment milling machine that is used for experimental powder process at present, the experiment mill for short mainly comprises grinding system, sieve system, flour storehouse, bran storehouse, and its grinding system is mostly four grinding rollers crisscross placing, and the combination is three pairs of rollers, and the wheat is through three times grinding in succession, and the material sediment gets into the rotary sieve under the grinding roller, and in sieve flour fell into the flour storehouse under the sieve, the wheat bran flowed from the other end of rotary sieve, fell into in the bran storehouse.

For making the material sediment smooth inflow circular screen of mechanism at the grinding, need set up wind-force feeding system, among the prior art, adopt a centrifugal fan of establishing ties at the grinding roller spindle, this fan rotates along with the grinding roller spindle, wind gets into the discharge gate and blows off the material sediment, this kind of structure, must set up anterior at the grinding roller, the perspective of this patent relatively will shelter from the sight, influence perspective effect greatly, and when the grinding roller is dismantled to needs and clearance grinding chamber, it is all comparatively loaded down with trivial details to dismantle and install, there is a great deal of inconvenience in the practical application.

In patent ZL201120298515.6 before the inventor, the three that relate to is adjustable to the grinding roller clearance, grind and the visual experiment milling machine of screening process, the whole transparent material that makes of round sieve cover, the whole transparent material that also makes of grinding roller apron, nevertheless because of grinding roller apron and the whole adoption of round sieve cover have transparent characteristic non-metallic material, it is not enough to have obvious mechanical strength, the course of working is yielding, defects such as difficult assurance of size, in production process, product use, easy bursting apart, and easy wearing and tearing, produce the mar, seriously influence live time and outward appearance aesthetic measure.

In addition, in the disclosed technology, 3 groups of eccentric sleeves are arranged, the mandrels of the first grinding roller, the third grinding roller and the fourth grinding roller are respectively arranged in the 3 eccentric sleeves through bearings, and the clearances of the grinding rollers can be adjusted by rotating the eccentric sleeves, so that the clearance adjustment of the three pairs of rollers is realized; however, according to the standard requirements, the first and second pairs of grinding rollers, especially the first pair of grinding rollers, require larger gaps, the production process can basically ensure the required gaps of the grinding rollers, and the small change of the gaps in the use process basically has no influence on the powder making effect, so that 3 groups of eccentric sleeves in the prior art are designed, thereby increasing the processing difficulty, improving the production cost, consuming labor and time for adjustment, bringing larger burden to production and use, and having the improvement need.

Disclosure of Invention

In order to solve the problem, the utility model provides an experiment milling machine, the technical scheme of adoption as follows:

an experimental flour mill mainly comprises a motor, a hopper, a mill, a screening device and a transmission system, wherein the mill comprises a mill roller seat and a mill roller group consisting of three pairs of mill rollers, the screening device consists of a bottom plate, a circular screen seat, a circular screen cover and a circular screen, it is characterized in that a wind power conveying system for supplying air to a material channel at the lower part of the grinding roller seat is also arranged in the grinding machine, the wind power conveying system is integrally arranged at the lower part of the grinding roller seat and comprises a fan, a first air inlet arranged at one side of the grinding roller seat and connected with an air outlet of the fan, a first air outlet arranged at the end surface of the grinding roller and communicated with the first air inlet after penetrating through the interior of the grinding roller seat, and air ducts transversely distributed at the lower part of the inner surface of the grinding roll cover plate, wherein the air ducts are sunken for a certain depth along the inner surface of the grinding roll cover plate, the first air inlet, the first air outlet, the air duct and the discharge hole at the lower part of the grinding roller seat are communicated in sequence.

Preferably, still including being used for adjusting the air regulation device of wind channel air output size, air regulation device includes the air regulation round hole that links to each other with wind channel income wind gap and first air outlet, is located the air regulation round downthehole air regulation valve of air regulation, the air regulation round hole sets up in first air outlet and wind channel junction, is the circular recess of the certain degree of depth of the inside caving in of autogenous grinding roller apron, air regulation valve is the cylindrical casing that one end does not have the lid to be equipped with the opening of certain width on the side surface, the coaxial rotatable coupling of air regulation valve is in air regulation round hole, the relative position between opening on the air regulation valve and the wind channel entry is adjusted in air regulation round hole through air regulation valve rotatable coupling.

Preferably, a material observation hole and an observation hole cover plate corresponding to the position of the discharge hole of the grinding roller seat are arranged on the grinding roller cover plate close to one side of the discharge hole of the grinding roller seat, and the observation hole cover plate is characterized by being a transparent cover plate.

Preferably, a first window and a second window are respectively arranged on the upper surface of the circular screen cover and one side surface far away from the discharge port of the grinding roller seat, a first cover plate and a second cover plate are rotatably connected in the first window and the second window, and the first cover plate and the second cover plate are transparent cover plates.

Preferably, the first cover plate and the second cover plate are respectively connected to the first window and the second window in a rotatable mode through hinges with a torque positioning function, and the torque hinges have certain pressing force when the first cover plate and the second cover plate are closed, so that the cover plates are attached to the round screen cover windows.

Preferably, the grinding roller cover plate is fixedly connected to the front side face of the grinding roller seat and consists of a metal frame and a transparent cover plate embedded in the metal frame.

Preferably, the transparent cover plate is an acrylic plate or a PC strength plate or a polycarbonate plate or glass.

Preferably, one of the third pair of grinding rollers in the grinding roller group is provided with an eccentric sleeve, a mandrel of the grinding roller is arranged in the eccentric sleeve through a bearing, the end face of the eccentric sleeve is provided with sawteeth and is meshed with a bearing cover with sawteeth on the end face, and the bearing cover is fixedly connected to the grinding roller seat through a fastening piece.

The beneficial effects of the utility model reside in that:

1. the grinding roller cover plate has a simple structure, is quick to detach and install and convenient to clean, the frame of the grinding roller cover plate has good strength, the sealing performance and the durability are ensured, meanwhile, the transparent cover plate is embedded in the middle, the perspective property is good, grinding rollers and material slag in the grinding chamber can be clearly seen, the working condition and the grinding progress of the grinding rollers can be mastered in real time, the flow of ground wheat can be conveniently and appropriately adjusted in time, and the grinding process is not blocked, smooth and efficient;

2. by arranging the eccentric sleeve component, the requirement of the gap adjusting function of the grinding roller of the whole experimental mill is met, and the experimental mill has the advantages of low processing cost, low production process difficulty and simple gap adjustment of the grinding roller;

3. a material observation hole is formed in the lower side of the grinding roller cover plate, is arranged below the grinding roller and is provided with a movable transparent cover plate, so that the circulation condition of materials can be conveniently observed, and the cleaning and dredging are convenient when the materials are blocked;

3. the air duct is arranged at the lower part of the grinding roller cover plate, the perspective of the grinding roller and the grinding process is not influenced, the air inlet amount is adjusted through the air volume adjusting valve, the air volume is controlled efficiently, the positioning is simple, and the fan is arranged at the outer side of the grinding roller seat, when the grinding chamber needs to be replaced or cleaned, the fan does not need to be disassembled, only the grinding roller cover plate needs to be disassembled, and the operation is simpler, more convenient, labor-saving and time-saving;

4. the round screen covers and is equipped with rotatable transparent cover plate, and the round screen cover both has better mechanical strength, also has better perspective, can clearly observe round screen sieve reason working conditions, chooses for use the moment of torsion hinge to make the upper cover have better leakproofness, effectively prevents spilling over of inside dust, makes things convenient for the inside sieve reason of round screen cover simultaneously, and the round screen cover internal fixation has the brush for the material that the clearance round screen was come up improves sieve efficiency.

Drawings

FIG. 1 is a schematic diagram of an experimental pulverizer

FIG. 2 is a schematic view of an experimental pulverizer

FIG. 3 is a schematic view of a grinding roller seat

FIG. 4 is a front view of a roll cover plate

FIG. 5 is a rear elevational view of a cover plate for a grinding roll

FIG. 6 is a front view of a cover plate structure of a grinding roller with an integrated transparent cover plate structure

FIG. 7 is a schematic view of an eccentric bushing structure

FIG. 8 is a schematic view of a bearing cap structure

FIG. 9 is an assembly view of an eccentric sleeve and a fourth grinding roll

FIG. 10 is an assembly view of an eccentric sleeve and gap adjustment mechanisms for a fourth and third grinding roll

FIG. 11 is a schematic view showing the structure of an air volume adjusting valve

FIG. 12 is a sectional view of the air duct and the air volume adjusting mechanism

FIG. 13 is a schematic diagram of the position structure of the brush and the circular sieve inside the circular sieve cover

FIG. 14 is a schematic view of an internal transmission structure of an experimental pulverizer

Wherein, 1-hopper cover, 2-hopper, 3-grinding roller seat, 301-feeding inlet, 302-grinding chamber, 302-discharging outlet, 303-first air inlet, 304-first air outlet, 305-discharging outlet, 306-grinding roller end surface, 4-grinding roller cover plate, 401-metal frame, 402-upper transparent cover plate, 403-lower transparent cover plate, 404-air quantity regulating valve shaft hole, 405-material observation hole, 406-cross beam, 407-air channel 408-air quantity regulating round hole, 409-integral transparent cover plate, 5-observation hole cover plate, 6-air quantity regulating turntable, 601-rotating shaft, 7 fan, 8-round screen cover, 9-round screen seat, 10-bottom plate, 11-flour bin, 12-bran bin, 13-first cover plate, 14 second cover plate, 15 motor, 16 first grinding roller, 17 second grinding roller, 18 third grinding roller, 19 fourth grinding roller, 20 round screen, 21 feed adjusting valve, 22 eccentric sleeve, 2201 eccentric sleeve outer circumference, 2202 eccentric sleeve inner circular hole, 2203 eccentric sleeve end face sawtooth, 23 bearing cover, 2301 bearing cover sawtooth, 2302 bearing cover long hole, 24 grinding roller hold-down screw, 25 first bearing, 26 bearing spacer sleeve, 27 mandrel, 28 second bearing, 29 driving wheel, 30 hold-down screw, 31 air volume adjusting valve, 32 adjusting valve extending shaft, 33 brush fixing bracket, 34 brush, 35 driving synchronous belt wheel, 36 synchronous belt, 37-driven synchronous pulley, 38-driving crank, 39-connecting rod, 40-driven crank, 41-wheat, 42-bran, 43-flour and 44-material residue.

Detailed Description

The present invention will be described in further detail with reference to the accompanying fig. 1-14 and the embodiments.

The experimental flour mill is characterized in that a three-grinding structure is formed by four grinding rollers which are arranged in a staggered mode, wherein the second grinding roller of a first leather mill is simultaneously the first grinding roller of a second leather mill, the second grinding roller of the second leather mill is the first grinding roller of a last core mill, a cylindrical round sieve 20 is arranged below the grinding rollers, a sample enters the first leather mill from a hopper 2 through an adjustable feeding door along with the rotation of the feeding roller and then directly enters the second leather mill and then the core mill without being sieved, finally mixed material slag 44 falls into the round sieve 20, the round sieve 20 can automatically rotate in an accelerating mode and a decelerating mode, the efficient sieving effect is achieved, and flour 43 and bran 42 fall into a flour bin 11 and a bran bin 12 respectively after sieving.

The utility model discloses an experimental milling machine, its basic structure is as shown in figure 2, mainly by motor 15, the mill, sieve material device and transmission system constitute, wherein the mill includes hopper cover 1, hopper 2, the grinding roller seat 3 of fixed connection below the hopper 2 discharge gate, wherein grinding roller seat structural style is shown in figure 3, its grinding roller seat 3 upper portion is equipped with feed inlet 301, the bottom is equipped with discharge gate 305, be equipped with first air intake 303 in grinding roller seat 3 left surface lower part, grinding roller terminal surface 306 lower part left side is equipped with first air outlet 304, first air intake 303 passes grinding roller seat 3 inside and links to each other with first air outlet 304, grinding roller seat 3 inside is equipped with grinding chamber 302, grinding chamber 302 is provided with four grinding rollers of staggered arrangement, first grinding roller 16, second grinding roller 17, third grinding roller 18 and fourth grinding roller 19 adjacent form the grinding face between the two, every grinding roller is fixed respectively on respective dabber, the mandrel is driven to rotate by a motor 15 so as to drive the grinding rollers to rotate, and the adjacent two grinding rollers are driven to rotate by a gear mechanism; the grinding roller cover plate 4 is fixed on the grinding roller end face 306, the grinding roller cover plate 4 is composed of a metal frame 401, an upper transparent cover plate 402 and a lower transparent cover plate 403 which are embedded in the metal frame 401, a cross beam 406 is arranged in the middle of the metal frame 401, the frame strength is effectively enhanced, the grinding roller cover plate can also be used as a handle, the upper transparent cover plate 402 and the lower transparent cover plate 403 are respectively embedded in grids of the metal frame 401, the grinding roller cover plate is fixed on the grinding roller seat end face 306 by a fastener in a working state, a closed working space is formed in the grinding chamber 302, the four grinding rollers are arranged in a staggered mode, and wheat can be.

An air duct 407 with a groove structure is arranged at the lower part of the grinding roller cover plate 4 and the side surface connected with the grinding roller end surface 306, the air duct 407 is recessed inwards and transversely distributed along the lower frame of the metal frame 401, an air duct is formed between the air duct 407 and the grinding roller end surface 306 after the grinding roller cover plate 4 is fixed, an air volume adjusting round hole 408 is arranged at the left side of the lower part of the metal frame 401, the air volume adjusting round hole 408 is a round hole which is positioned at the lower part of the grinding roller cover plate 4 and is recessed inwards to a certain depth, the air volume adjusting hole 408 corresponds to and is communicated with the first air outlet 304, the air volume adjusting round hole 408 is also communicated with the air duct 407, an air volume adjusting valve shaft hole 404 which is coaxially distributed with the air volume adjusting round hole 408 and penetrates through the grinding roller cover plate 4 is also arranged on the grinding roller cover plate 4, a material observation hole 405 is, and is corresponding to the position of the discharge port 305 in the grinding roller seat 3, there is an observation hole cover plate 5 at the material observation hole 405 of the grinding roller cover plate 4, the observation hole cover plate 5 is hinged or fixed on the grinding roller cover plate 4 by screws, which is convenient for observing the grinding condition and cleaning the material, as shown in figure 12, the first air inlet 303, the first air outlet 304, the air volume adjusting round hole 408, the air duct 407 on the grinding roller cover plate 4, the observation hole 405, the discharge port 305 are sequentially communicated to form a complete air duct, the air volume adjusting valve 31 coaxially and rotatably connected in the air volume adjusting round hole 408, the air volume adjusting valve 31 is structured as shown in figure 11, is integrally a cylindrical shell with one end uncovered, and has an opening with a certain width along the circumferential direction on the side surface, the upper part of one end with a cover is coaxially and fixedly connected with an adjusting valve extension shaft 32, the air volume adjusting valve 31 is fixedly connected, the air quantity adjusting turntable 6 and the air quantity adjusting valve 31 are respectively arranged on the front side surface and the rear side surface of the grinding roller cover plate 4, the left side of the grinding roller seat 3 is provided with a fan 7 with an air outlet communicated with the first air inlet 303, the fan 7 is provided with turbine fan blades, and a micro motor is integrated in the fan 7.

The experimental pulverizer mill is also provided with a group of eccentric sleeves 22, a gap between a third pair of grinding rollers, namely a fourth grinding roller 19 and a third grinding roller 18, is set to be an adjustable mechanism, the eccentric sleeves 22 are cylinders with round holes deviating from the central axis of the periphery, the structure is shown in figure 7, the axes of the round holes 2202 in the eccentric sleeves are parallel to the axes of the outer peripheries 2201 of the eccentric sleeves but do not coincide and deviate from a certain distance in the radial direction, one side end face of the eccentric sleeves 22 is provided with eccentric sleeve end face sawteeth 2203, the matched bearing cover 23 is also provided with bearing cover sawteeth 2301, the end face is provided with a bearing cover long hole 2302, the eccentric sleeves 22 are matched with the grinding roller mandrel 27 as shown in sectional views 9 and 10, the mandrel 27 of the fourth grinding roller 19 is installed in the round holes 2201 in the eccentric sleeves through a first bearing 25 and a second bearing 28, the eccentric sleeves 22 are embedded and matched in corresponding position holes on the grinding roller base 3, the bearing cover sawteeth 230, the bearing cover 23 is fixed on the grinding roller seat 3 by a fastener at the position of the long circular hole 2302 of the bearing cover, the eccentric sleeve 22 does not rotate relative to the grinding roller seat 3 in the use process, when the grinding roller gap needs to be adjusted, the compression screw 30 on the bearing cover 23 is loosened, the eccentric sleeve 22 is properly rotated, the eccentric sleeve 22 drives the mandrel 27 of the fourth grinding roller 19 to deviate relative to the mandrel of the third grinding roller 18, so that the gap between the third grinding roller 18 and the fourth grinding roller 19 can be increased or reduced, after the adjustment is finished, the bearing cover 23 meshed with the eccentric sleeve 22 is fixed on the grinding roller seat 3 again, the eccentric sleeve 22 cannot rotate, and the ideal grinding roller gap can be obtained and maintained.

The material sieving device comprises a round sieve seat 9, a round sieve cover 8, a flour bin 11, a bran bin 12 and a bottom plate 10, the round sieve seat 9 is positioned below the discharge port 305, the round sieve cover 8 is arranged on the round sieve seat 9, a first window and a second window are respectively arranged at the upper end of the round screen cover 8 and on one side surface far away from the discharge hole 305, a first cover plate 13 and a second cover plate 14 are respectively connected on the first window and the second window in a rotatable way through hinges, and the two cover plates are both made of transparent PC pressure-resistant plates, the hinges are torque positioning hinges, when the cover plates and the circular screen cover 8 are closed at zero-degree positions, the torque hinge has certain pressing force, so that the transparent plate is attached to the upper opening frame of the circular sieve cover 8, the sealing effect is good, a closed space is formed among the circular sieve cover 8, the bottom plate 10 and the circular sieve seat 9, the circular sieve 20 is arranged in the circular sieve, the bottom plate 10 is provided with a flour bin 11 positioned below the circular sieve 20 and a bran bin 12 at one end far away from the circular sieve seat 9.

As shown in fig. 13, the inner surface of the circular screen cover 8 is fixedly connected with the brush 34 through the brush fixing support 33, the brush 34 is distributed along the length direction of the circular screen 20 and contacts with the circular screen 20, and when the circular screen 20 rotates, the circular screen 20 rotates relatively and rubs against the brush to clean the materials attached to the circular screen 20, thereby improving the screening efficiency.

As shown in fig. 14, a motor 15 drives grinding rollers to rotate through belt transmission, the grinding rollers rotate through gear transmission, the grinding rollers drive a circular sieve 20 to rotate through a synchronous belt and a double-crank mechanism, specifically, a driving synchronous pulley 35 is machined on one grinding roller or is fixedly connected with the grinding roller coaxially, the driving synchronous pulley 35 is connected with a driven synchronous pulley 37 through a synchronous belt 36, a driving crank 38 is coaxially connected with the driven synchronous pulley 37, a driven crank 40 is connected with a driving shaft of the sieve 20, the driving crank 38 is connected with the driven crank 40 through a connecting rod 39, a grinding roller shaft is connected with the synchronous belt 38 through the synchronous pulley and the synchronous belt to rotate at a constant speed, the driven crank 40 is driven to rotate at a non-constant speed, the circular sieve 20 is driven to rotate at a variable speed.

Wheat gets into the inside grinding of grinding roller seat 3 from hopper 2, open fan 7 simultaneously, through last transparent cover plate 402 and transparent cover plate 403 and observation aperture apron 5 under and observe inside grinding and the material circulation condition, and adjust air regulation carousel 6 according to actual conditions, guarantee that the inside amount of wind of grinding roller seat 3 is moderate, the material can be smoothly flowed into in the rotary screen 20 and sieve the clearance, through first apron 13 and second apron 14 can be clear look over the sieve clearance effect, when the jam condition appears, can open observation aperture apron 5 and first apron 13, second apron 14 dredges, the clearance.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements can be made, and these improvements should also be regarded as the protection scope of the present invention.

Claims (8)

1. An experimental flour mill mainly comprises a motor, a hopper, a mill, a screening device and a transmission system, wherein the mill comprises a mill roller seat and a mill roller group consisting of three pairs of mill rollers, the screening device consists of a bottom plate, a circular screen seat, a circular screen cover and a circular screen, it is characterized in that a wind power conveying system for supplying air to a material channel at the lower part of the grinding roller seat is also arranged in the grinding machine, the wind power conveying system is integrally arranged at the lower part of the grinding roller seat and comprises a fan, a first air inlet arranged at one side of the grinding roller seat and connected with an air outlet of the fan, a first air outlet arranged at the end surface of the grinding roller and communicated with the first air inlet after penetrating through the interior of the grinding roller seat, and air ducts transversely distributed at the lower part of the inner surface of the grinding roll cover plate, wherein the air ducts are sunken for a certain depth along the inner surface of the grinding roll cover plate, the first air inlet, the first air outlet, the air duct and the discharge hole at the lower part of the grinding roller seat are communicated in sequence.

2. The experimental pulverizer of claim 1, further comprising an air volume adjusting device for adjusting the air volume of the air duct, wherein the air volume adjusting device comprises an air volume adjusting round hole connected with the air duct inlet and the first air outlet, and an air volume adjusting valve located in the air volume adjusting round hole, the air volume adjusting round hole is arranged at the joint of the first air outlet and the air duct, and is a circular groove which is recessed from the cover plate of the grinding roller to a certain depth, the air volume adjusting valve is a cylindrical shell with one uncovered end and is provided with an opening with a certain width on the side surface, the air volume adjusting valve is coaxially and rotatably connected in the air volume adjusting round hole, and the relative position between the opening on the air volume adjusting valve and the air duct inlet is adjusted in the air volume adjusting round hole through the air volume adjusting valve in a rotatable manner.

3. Laboratory mill according to claim 1 or 2, characterized in that the roll cover plate on the side close to the outlet of the roll base is provided with material observation openings and observation opening cover plates corresponding to the outlet of the roll base, said observation opening cover plates being characterized by transparent cover plates.

4. An experimental mill according to claim 3, characterized in that the upper surface of the circular screen and a side surface remote from the outlet of the grinding roller holder are provided with a first window and a second window, respectively, the first window and the second window being rotatably connected with a first cover plate and a second cover plate, the first cover plate and the second cover plate being transparent cover plates.

5. Laboratory mill according to claim 4, characterized in that the first and second cover plates are rotatably connected to the first and second windows, respectively, by hinges having a torque-locking function, the first and second cover plates having a certain pressing force when closed by the torque hinges, so that the cover plates engage the round screen housing windows.

6. Laboratory mill according to claim 5, characterized in that the grinding roller cover plate is fixedly connected to the front side of the grinding roller seat and consists of a metal frame and a transparent cover plate embedded in the metal frame.

7. Laboratory mill according to any one of claims 4, 5, 6, characterized in that the transparent cover plate is an acrylic plate or a PC-resistant plate or a polycarbonate plate or glass.

8. Laboratory mill according to any one of claims 1, 2, 4, 5, 6, characterized in that one of the third pair of grinding rollers of the set of grinding rollers is provided with an eccentric sleeve, that the spindle of said grinding roller is mounted in said eccentric sleeve by means of a bearing, that the end face of said eccentric sleeve is provided with serrations and that it meshes with a bearing cap provided with serrations at its end face, that said bearing cap is fixedly connected to the grinding roller housing by means of a fastening element.

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