CN215278466U - A sieving machine for flour screening - Google Patents

Abstract

The utility model relates to a sieving machine for flour screening, including fixed frame, be provided with the sieve case that shakes in the fixed frame, sieve case and fixed frame pass through connecting rod fixed connection that shakes, the bottom of sieve case that shakes is provided with vibrating device, be provided with the feed inlet on the sieve case that shakes, the sieve incasement that shakes is provided with first bank, the sieve incasement chamber that shakes of first bank below has set gradually second bank and third bank in turn, first bank passes through the chamber including first oversize thing, first sieve chamber and second oversize thing pass through the chamber, the second bank includes second sieve chamber and third oversize thing and passes through the chamber, the third bank includes third sieve chamber and fourth oversize thing and passes through the chamber, first sieve chamber and third sieve chamber are linked together through chamber and third oversize thing through first oversize thing, first sieve chamber and second sieve chamber are linked together through the chamber through second oversize thing. The too big jam that arouses of coarse fodder feeding volume has been reduced, the utility model discloses adjust, convenient to use have extensive market prospect.

Description

A sieving machine for flour screening

Technical Field

The utility model relates to a flour screening machinery, concretely relates to sieving machine for flour screening.

Background

Rice and flour are essential products for life in China in agricultural and foreign countries, wherein the wheaten food is indispensable in three meals. However, in order to produce different wheaten foods from flour, the flour needs to be classified into different particle sizes, or a feed field needs to sieve feeds into different particle sizes to supply different livestock or different feeding periods. For the grain size classification of flour or feed, a plurality of layers of screen frames are placed in a flat screen frame, a screen is laid on the screen frames, the flour or the feed is poured into the flat screen frame, and the flat screen frame is rotationally vibrated, so that the flour is screened from the screen frame on the first layer to the screen frame on the next layer; the sieve with smaller aperture is used for sieving fine flour particles, and the sieve with larger aperture is used for sieving coarse flour particles, so that the classification of the particles is distinguished. The screening action of the screen is formed by shaking. With the advent of modern automated machinery, no manpower is used today, but rather automated machinery is used to generate vibrations to shake the screen to effect flour grading. In the known flour classifying machines, a sifting device is suspended on a fixed support provided with a motor which is connected to a transmission mechanism, and the transmission mechanism extends out of a rotating shaft which is pivoted to the sifting device, and the rotating shaft is eccentrically connected with a counterweight. The motor drives the rotating shaft to drive the balancing weight to eccentrically rotate, and the sieving device shakes along with the rotation of the balancing weight so as to sieve and filter flour.

The existing vibrating screen machine for screening flour is characterized in that internal screens are usually arranged in a staggered mode, the coarse materials (including bran and flour) usually enter the vibrating screen machine to be screened can account for 40-70% of the total weight, the existing process is that the coarse materials move forward along a snake-shaped channel and are screened, the bran and the flour can be sufficiently separated, the existing structure is adopted for screening the coarse materials, if the coarse material input amount is too large, blockage can be caused, the occupied space of the bran content is obviously small after the coarse materials are dried to a lower screen due to the fact that the occupied space of the bran and the flour in the coarse materials is too large in a mixed state, the occupied space of the coarse materials in a first-stage screen and a second-stage screen is very easy to appear when the coarse materials initially enter the first-stage screen and the second-stage screen, the upper space of the screens is occupied completely, subsequent raw materials cannot enter, and the blockage can be caused by forced entering, meanwhile, the production efficiency is also influenced, the popularization of equipment is also influenced, and the energy waste is caused.

Disclosure of Invention

Not enough to prior art, the utility model provides a can improve coarse fodder handling capacity and then improve the sieving efficiency be used for the sieving machine of flour screening for overcome defect among the prior art.

The utility model adopts the technical proposal that: the utility model provides a sieving machine for flour screening, includes fixed frame, fixed frame in be provided with the sieve case that shakes, sieve case and fixed frame pass through connecting rod fixed connection that shakes, the bottom of sieve case that shakes is provided with vibrating device, the last feed inlet that is provided with of sieve case that shakes, the sieve incasement that shakes be provided with first bank of screens, sieve incasement chamber that shakes of first bank of screens below second bank of screens intracavity have set gradually second bank of screens and third bank of screens in turn, first bank of screens pass through chamber, first sieve chamber and second sieve thing and pass through the chamber, second bank of screens include second sieve chamber and third sieve thing and pass through the chamber, third bank of screens include third sieve chamber and fourth sieve thing and pass through the chamber, first bank of screens be provided with and pass through the snakelike passageway that chamber is constituteed by second sieve chamber, third sieve thing and fourth sieve thing, first sieve chamber with third sieve chamber pass through first sieve thing and third sieve thing pass through the first sieve and pass through the second sieve thing and pass through the snakelike passageway that the chamber is constituteed The through cavities are communicated, and the first sieve cavity is communicated with the second sieve cavity through the second oversize product passing cavity.

Preferably, vibrating device include driving motor, driving motor install in the bottom of sieve case that shakes, one side of driving motor be provided with the axis of rotation, the axis of rotation adopts the round bar structure that can do rotatory operation around the axis of rotation axis, is provided with eccentric balancing weight and passive belt pulley in the axis of rotation, the last driving pulley that is provided with of driving motor, driving pulley and passive belt pulley pass through the driving belt transmission and connect.

Preferably, the first sieve frame comprises a first supporting plate, the second sieve frame comprises a second supporting plate, the third sieve frame comprises a third supporting plate, the second supporting plate and the third supporting plate both comprise two outer supporting plates, an inner supporting plate is arranged between the two outer supporting plates, the outer supporting plates adopt a rectangular plate structure, the inner supporting plates adopt an n-shaped plate structure, the inner side of the inner supporting plate is provided with a undersize guiding cavity, a plurality of undersize passing cavities formed by the undersize guiding cavities are arranged below the first sieve frame, the undersize passing cavities adopt a cubic structure, the number of the sieve nets adopts a plurality, the sieve nets are equally divided into a plurality of sieve guiding plates, undersize discharge ports are arranged at the positions of the two ends of the undersize guiding plates corresponding to the undersize passing cavities, the undersize product is communicated with the undersize product discharge hole through the cavity.

Preferably, a top plate of the vibrating screen box is sleeved with a fixing screw, the fixing screw is in threaded connection with the top plate of the vibrating screen box, a bottom plate of the fixing screw is provided with a pressing sheet, and the pressing sheet is movably connected with the first screen frame.

Preferably, the bottom plate of sieve case that shakes be provided with the bran discharging pipe, first oversize thing through the chamber, second oversize thing through the chamber with third oversize thing through the chamber equally divide and be linked together with the bran discharging pipe respectively.

Preferably, the quantity of undersize thing through the chamber adopts two, two the undersize thing pass through the chamber below the bottom plate of sieve case that shakes equally divide and do not correspond and be provided with the flour discharging pipe, vibrating device be located between two flour discharging pipes.

Preferably, the cross section of the undersize guide plate adopts a V-shaped structure.

The utility model has the advantages that: first, the utility model discloses an first sieve chamber both sides set up first oversize thing respectively and let the coarse fodder get into through chamber and second oversize thing respectively through the chamber the second sieve chamber with thereby the third sieve chamber accomplish the first screening separation, changed among the prior art stiff utilization serpentine channel and carried out the technical bias of screening to the coarse fodder, extended the area of the screen cloth that is used for the screening for the first time in other words to improve screening efficiency, improved the utilization ratio of the chamber body in the sieve case that shakes simultaneously, reduced because the technical problem of the too big jam that causes of coarse fodder feeding volume.

Secondly, the utility model discloses the roof of sieve case that shakes on the cover be equipped with clamping screw, clamping screw with the roof threaded connection of sieve case that shakes, clamping screw's bottom plate is provided with the preforming, the preforming with first bank of screens swing joint, it is convenient fixed first bank of screens second bank of screens with the third bank of screens in the fixed of sieve incasement chamber that shakes.

Finally, the cross-section of undersize thing deflector adopt V font structure. The flour after the screen mesh screening is conveniently guided and conveniently enters the undersize material to be discharged through the cavity and then through the finished product of the flour discharging pipe to the ground

The utility model has the advantages of simple structure, convenient operation, design benefit has improved work efficiency greatly, has fine social and economic benefits, is the product of easily using widely.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic cross-sectional view taken along the line A-A' of FIG. 1.

FIG. 3 is a schematic cross-sectional view taken along the direction B-B' in FIG. 1.

Fig. 4 is a schematic view of the three-dimensional structure of the first sieve frame, the second sieve frame and the third sieve frame of the present invention.

Fig. 5 is a schematic perspective view of the undersize guide plate of the present invention.

Detailed Description

As shown in fig. 1, 2, 3, 4, 5, a sieving machine for flour sieving comprises a fixed frame 1, a sieving box 2 is arranged in the fixed frame 1, the sieving box 2 comprises a sieving box body and a box door, the sieving box body adopts a box-shaped structure with one side open, the box door is arranged at the open end of the sieving box body, one end of the box door is hinged on the sieving box body, one end of the box door is connected with the sieving box body through a lock catch, the sieving box 2 is fixedly connected with the fixed frame 1 through a connecting rod 3, the connecting rod 3 adopts a round rod-shaped structure made of stainless steel material, a vibrating device is arranged at the bottom of the sieving box 2 and comprises a driving motor 6, the driving motor 6 is arranged at the bottom of the sieving box 2, one side of the driving motor 6 is provided with a rotating shaft 7, rotation axis 7 adopts the round bar structure that can do rotatory operation around 7 axis of rotation axis, rotation axis 7 is connected through the bearing with the underrun of shaking sieve case 2, be provided with eccentric balancing weight 8 and passive belt pulley 9 on the rotation axis 7, rotation axis 7 is located 8 centrobaric one sides of eccentric balancing weight, eccentric balancing weight 8 and rotation axis 7 pass through the key-type connection, be provided with driving pulley 10 on the driving motor 6, driving pulley 10 and passive belt pulley 9 pass through driving belt 11 transmission and connect. Be provided with feed inlet 4 on the sieve case 2 that shakes, its characterized in that: the vibrating screen box 2 is internally provided with a first screen frame, an inner cavity of the vibrating screen box 2 below the first screen frame is sequentially and alternately provided with a second screen frame and a third screen frame, the first screen frame comprises a first screen passing cavity, a first screen cavity and a second screen passing cavity, the second screen frame comprises a second screen cavity and a third screen passing cavity, the third screen frame comprises a third screen cavity and a fourth screen passing cavity, the first screen frame is provided with a snake-shaped channel formed by the second screen cavity, the third screen passing cavity, the third screen cavity and the fourth screen passing cavity, the first screen cavity and the third screen cavity are communicated through the first screen passing cavity and the third screen passing cavity, and the first screen cavity and the second screen cavity are communicated through the second screen passing cavity. The third oversize passing cavity is positioned right below the first oversize passing cavity, and the fourth oversize passing cavity is positioned right below the second oversize passing cavity.

Meanwhile, in order to facilitate flour which is sieved by the screen 5 to be more rapidly discharged out of the vibrating screen box 2, so that space is saved for coarse material sieving, the first screen frame of the product adopts an I-shaped structure which is composed of two first supporting plates 12 which are parallel to each other and two first screen mounting plates 21 which are parallel to each other, the first supporting plates 12 and the first screen mounting plates 21 both adopt a rectangular plate-shaped structure, the width of the first supporting plates 12 is not less than that of the first screen mounting plates 21, the inner walls of the two first supporting plates 12 and the top surfaces of the two first screen mounting plates 21 are respectively fixedly connected with the corresponding screen 5, the second screen frame adopts a concave-shaped structure which is composed of two second supporting plates 13 which are parallel to each other and two second screen mounting plates 22 which are parallel to each other, the third screen frame adopts an inverted concave-shaped structure which is composed of two third supporting plates 14 which are parallel to each other and two third screen mounting plates 23 which are parallel to each other, first backup pad 12, second backup pad 13 and third backup pad 14 all include two outer backup pads, two outer backup pad between be provided with interior backup pad, outer backup pad adopt rectangle platelike structure, interior backup pad adopt n font platelike structure, interior backup pad inboard be provided with undersize thing direction chamber, first bank of screens below be provided with by a plurality of undersize thing direction chamber constitute undersize thing pass through the chamber, undersize thing pass through the chamber and adopt cube structure, the number of screen cloth 5 adopt a plurality of, a plurality of screen cloth 5 is equallyd divide and is provided with undersize thing deflector 19 respectively, undersize thing deflector 19 both ends correspond the position that undersize thing passes through the chamber be provided with undersize thing discharge gate 20, undersize thing be linked together through chamber and undersize thing discharge gate 20, the top surface of second screen cloth mounting panel 22, The inner wall of the outer support plate of the second support plate 13 and the bottom surface of the inner support plate of the second support plate 13 are fixedly connected with the corresponding screen 5, respectively, and the top surface of the third screen mounting plate 23, the inner wall of the outer support plate of the third support plate 14 and the bottom surface of the inner support plate of the third support plate 14 are fixedly connected with the corresponding screen 5, respectively. The central axis of the first sieve frame, the central axis of the second sieve frame and the central axis of the third sieve frame are located on the same plane, and the undersize objects are respectively located on two sides of the plane through the cavities. The quantity that the screen underflow thing passed through the chamber adopt two, two the screen underflow thing pass through the chamber below the bottom plate of sieve vibration case 2 equally divide and correspond respectively and be provided with flour discharging pipe 18, vibrating device be located between two flour discharging pipes 18. Further in order to conveniently discharge the inner cavity of the vibration sieve box 2 by the bran, the bottom plate of the vibration sieve box 2 is provided with a bran discharge pipe 17, the first oversize material passes through the cavity, the second oversize material passes through the cavity and the third oversize material passes through the cavity and is equally divided into two parts which are communicated with the bran discharge pipe 17.

In order to fix the first sieve frame, the second sieve frame and the third sieve frame conveniently in the cavity of the vibrating sieve box 2, the top plate of the vibrating sieve box 2 is sleeved with a fixing screw rod 15, the fixing screw rod 15 is in threaded connection with the top plate of the vibrating sieve box 2, a pressing sheet 16 is arranged on the bottom plate of the fixing screw rod 15, and the pressing sheet 16 is movably connected with the first sieve frame.

In order to guide the flour screened by the screen mesh 5 and conveniently enter the undersize through the cavity and then enter the flour discharge pipe 18 to discharge the finished flour, the cross section of the undersize guide plate 19 of the product adopts a V-shaped structure. The heights of the top end of the undersize guide plate 19 and the undersize discharge port 20 and the height of the bottom end of the undersize guide plate 19 and the undersize discharge port 20 are gradually reduced along with the distance from the bottom end of the undersize guide plate 19 to the undersize discharge port 20. The undersize material outlet 20 adopts a rectangular groove-shaped structure.

The use method of the product is as follows: as shown in fig. 1, 2, 3, 4 and 5, firstly, the driving motor 6 is turned on, the driving pulley 10 is driven by the driving motor 6 to drive the driven pulley 9 to rotate through the transmission belt 11, the driven pulley 9 drives the rotating shaft 7 to rotate so as to drive the eccentric balancing weight 8 to rotate, and during the period, the connecting rod 3 is continuously weakly bent and continuously reset, and the vibrating screen box 2 vibrates.

Then, coarse materials are conveyed into an inner cavity of a vibrating screen box 2 through a feeding port 4, after the coarse materials enter a first screen cavity above a screen 5, one side of the first screen cavity of a part of the coarse materials is discharged out of the first screen cavity and then sequentially enters a third screen cavity positioned at the top through a first oversize material passing cavity and a third oversize material passing cavity for screening, wherein another part the coarse fodder follow first sieve chamber opposite side discharge and the back get into the second oversize thing through the chamber get into the second sieve chamber, then through the third oversize thing through the chamber get into the third sieve chamber, finally through the fourth oversize thing through the chamber get into the below by the snakelike oversize thing passageway that second bank of screens and third bank of screens constitute and sieve in proper order, the bran that finishes that final screening passes through bran discharging pipe 17 and discharges the inner chamber of shaking sieve case 2.

When the coarse material passes through the cavity above the screen 5, the bran and the flour are separated under the filtration of the screen 5, the flour enters the cavity between the screen 5 and the undersize guide plate 19 through the holes on the screen 5, and under the continuous vibration of the undersize guide plate 19 in combination with the vibration of the vibration sieve box 2, the flour enters the corresponding undersize passing cavity through the undersize discharge holes 20 on the two sides of the undersize guide plate 19, and is finally discharged out of the inner cavity of the vibration sieve box 2 from the undersize discharge holes 20.

Through the embodiment, the cavity make full use of in the case 2 that shakes has been realized, adopt first sieve chamber both sides set up first oversize thing respectively and pass through the chamber and the second oversize thing lets the coarse fodder get into respectively through the chamber the second sieve chamber with the third sieve chamber thereby accomplish the separation of screening for the first time, indirect increase the coarse fodder be used for the area of the screen cloth 5 of screening for the first time to reduced the coarse fodder and originally got into the jam problem that shakes and to sift the case 2 in because the feeding volume is too much and bring.

The utility model discloses a satisfy a sieving machine for flour screening in flour screening machinery field worker needs, make the utility model discloses extensive market prospect has.

Claims (7)

1. The utility model provides a sieving machine for flour screening, includes fixed frame (1), fixed frame (1) in be provided with sieve case (2) that shakes, sieve case (2) and fixed frame (1) are through connecting rod (3) fixed connection that shakes, the bottom of sieve case (2) that shakes is provided with vibrating device, is provided with feed inlet (4), its characterized in that on sieve case (2) shakes: the vibrating screen box is characterized in that a first screen frame is arranged in the vibrating screen box (2), an inner cavity of the vibrating screen box (2) below the first screen frame is sequentially and alternately provided with a second screen frame and a third screen frame, the first screen frame comprises a first screen upper object passing cavity, a first screen cavity and a second screen upper object passing cavity, the second screen frame comprises a second screen cavity and a third screen upper object passing cavity, the third screen frame comprises a third screen cavity and a fourth screen upper object passing cavity, the first screen frame is provided with a snake-shaped channel formed by the second screen cavity, the third screen upper object passing cavity, the third screen cavity and the fourth screen upper object passing cavity, the first screen cavity and the third screen cavity are communicated through the first screen upper object passing cavity and the third screen upper object passing cavity, the first screen cavity and the second screen cavity are communicated through the second screen upper object passing cavity, and the first screen frame is communicated through the second screen upper object passing cavity, And the second sieve frame and the third sieve frame are respectively provided with a sieve (5).

2. A vibratory screening machine for flour screening as claimed in claim 1 wherein: vibrating device include driving motor (6), driving motor (6) install in the bottom of sieve case (2) that shakes, one side of driving motor (6) be provided with axis of rotation (7), axis of rotation (7) adopt can be around axis of rotation (7) axis to make the round bar structure of rotatory operation, be provided with eccentric balancing weight (8) and passive belt pulley (9) on axis of rotation (7), be provided with driving pulley (10) on driving motor (6), driving pulley (10) and passive belt pulley (9) are connected through driving belt (11) transmission.

3. A vibratory screening machine for flour screening as claimed in claim 1 wherein: the first sieve frame comprises a first supporting plate (12), the second sieve frame comprises a second supporting plate (13), the third sieve frame comprises a third supporting plate (14), the second supporting plate (13) and the third supporting plate (14) comprise two outer supporting plates, an inner supporting plate is arranged between the two outer supporting plates, the outer supporting plates adopt a rectangular plate-shaped structure, the inner supporting plates adopt an n-shaped plate-shaped structure, an undersize guiding cavity is arranged on the inner side of each inner supporting plate, an undersize passing cavity consisting of a plurality of undersize guiding cavities is arranged below the first sieve frame, the undersize passing cavity adopts a cubic structure, the number of the sieve nets (5) adopts a plurality, undersize guiding plates (19) are respectively arranged on the plurality of sieve nets (5), undersize discharging holes (20) are arranged at the positions, corresponding to the undersize passing cavity, of the two ends of the undersize guiding plates (19), the undersize material is communicated with an undersize material outlet (20) through a cavity.

4. A vibratory screening machine for flour screening as claimed in claim 1 wherein: the top plate of the vibrating screen box (2) is sleeved with a fixing screw (15), the fixing screw (15) is in threaded connection with the top plate of the vibrating screen box (2), a pressing sheet (16) is arranged on a bottom plate of the fixing screw (15), and the pressing sheet (16) is movably connected with the first screen frame.

5. A vibratory screening machine for flour screening as claimed in claim 1 wherein: the bottom plate of sieve case (2) that shakes be provided with bran discharging pipe (17), first oversize thing through the chamber second oversize thing through the chamber with third oversize thing divide equally through the chamber and do not be linked together with bran discharging pipe (17).

6. A vibratory screening machine for flour screening as claimed in claim 3 wherein: the quantity that the screen underflow thing passed through the chamber adopt two, two the screen underflow thing pass through the chamber below the bottom plate of sieve vibration case (2) equally divide and do not correspond and be provided with flour discharging pipe (18), vibrating device be located between two flour discharging pipes (18).

7. A vibratory screening machine for flour screening as claimed in claim 3 wherein: the cross section of the undersize guide plate (19) adopts a V-shaped structure.

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