CN110882913A - Prevent screening plant for sodium metabisulfite filling of jam - Google Patents

Abstract

The invention discloses an anti-clogging screening device for filling sodium metabisulfite, which belongs to the technical field of sodium metabisulfite production. , There is a cleaning brush between the cylindrical screen and the inner top of the screening box, and guide slide bars are arranged parallel and spaced at the outer top of the cleaning brush, and each guide slide bar moves through the top of the screening box; There is a protective cover on the outer top of the screening box around the rod, and a transmission plate is arranged in the protective cover, and the upper ends of each guide sliding rod are respectively fixedly connected with the transmission board; A connecting shaft is rotatably connected through the bearing and the shaft seat in the protective cover, and a cam matched with the transmission plate is fixedly connected on the connecting shaft; the invention aims to provide a sodium metabisulfite with a compact structure and good anti-blocking effect. Screening device for filling; used for screening of sodium metabisulfite before filling.

Description

Anti-clogging Sodium Metabisulfite Filling Screening Unit

technical field

The invention relates to a screening device for filling sodium metabisulfite, in particular to a screening device for filling sodium metabisulfite with anti-clogging.

Background technique

There are two kinds of production process routes of sodium metabisulfite: dry method and wet method. Dry method: stir the soda ash and water evenly according to a certain molar ratio, when the Na2CO3.nH2O is formed into a block, put it into the reactor, keep a certain gap between the blocks and then pass SO2 until the reaction is over, take out the block The product is obtained by crushing. Wet method: Add a certain amount of soda ash to the sodium bisulfite solution to form a suspension of sodium sulfite, and then introduce SO2 to form sodium metabisulfite crystals, which are centrifuged and dried to obtain the finished product. Wet method. In the sodium bisulfite solution, add a certain amount of soda ash to form a suspension of sodium sulfite, and then introduce SO2 to form sodium metabisulfite crystals, which are centrifuged and dried to obtain the finished product.

After the industrial sodium metabisulfite is dried, it needs to be screened by a screening device and then bagged. However, during the screening process, it is found that the screen holes of the existing screening device are easily blocked during screening, and the screening effect is relatively low. Poor and inconvenient to use.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a screening device for filling sodium metabisulfite with a compact structure and good anti-blocking effect in view of the deficiencies of the above-mentioned prior art.

The technical scheme of the present invention is achieved as follows: an anti-clogging screening device for filling sodium metabisulfite, comprising a screening case, and a cylindrical screen with open ends at both ends is inclined in the screening case. The inside of the screen is fixedly connected with a rotating support frame that is rotatably connected to the screening case through the cooperation of angular contact ball bearings and shaft seats; the screening case is provided with a feeding component adapted to the high-end opening of the cylindrical screen. The low-end screening box is equipped with a coarse material collection component, and a fine material collection pipe is connected to the bottom of the screening box;

A cleaning brush parallel to the axis of the cylindrical screen is arranged between the cylindrical screen and the inner top of the screening case, and guide sliding bars perpendicular to the axis of the cylindrical screen are arranged parallel to and at intervals on the outer top of the cleaning brush. The guide sliding rod moves through the top of the screening case; a protective cover is arranged on the outer top of the screening case around the guiding sliding rod, and a transmission plate is arranged in the protective cover, and the upper ends of each guiding sliding rod are respectively fixedly connected with the transmission plate; Each guide sliding rod in the protective cover is sleeved with a return spring, and a connecting shaft is connected and rotated in the protective cover through a bearing and a shaft seat, and a cam matched with the transmission plate is fixedly connected to the connecting shaft. There is a linkage drive mechanism connected with the rotating support frame and the connecting shaft; in the working state, the cylindrical screen rotates around the axis of the cylinder, and through the mutual cooperation between the cam, the transmission plate, the guide slide bars and the return springs, The cleaning brush reciprocates along the radial direction of the cylindrical screen to clean the screen holes of the cylindrical screen.

In the above-mentioned anti-clogging screening device for filling sodium metabisulfite, the screening case is composed of a screening section and a bucket-shaped connecting section integrally formed at the bottom of the screening section; the rotating support frame is arranged on the screening section. Inside, the feeding component is arranged on the screening section corresponding to the high end of the cylindrical screen, the coarse material collecting component is arranged on the screening section corresponding to the low end of the cylindrical screen, and the protective cover is arranged on On the outer top of the screening part, the fine material collection pipe is arranged at the outlet of the bucket-shaped connection part.

In the above-mentioned anti-clogging sodium metabisulfite filling screening device, the feeding component is connected to the low end of the feeding hopper by a feeding hopper arranged on the outer side wall of the screening case and the free end extending into it. It consists of the feeding pipe in the high-end opening of the cylindrical screen.

In the above-mentioned anti-clogging sodium metabisulfite filling screening device, the coarse material collection assembly consists of an arc-shaped collection plate arranged on the periphery of the bottom of the low end of the cylindrical sieve and inclined through the side wall of the screening case and a It is composed of an annular arc-shaped sealing plate on the outer side wall of the screening cabinet and in cooperation with the arc-shaped collecting plate.

In the above-mentioned anti-clogging sodium metabisulfite filling screening device, the rotating support frame consists of a rotating shaft that is arranged along the axis of the cylindrical sieve and is rotatably connected to the screening case through an angular contact ball bearing and a shaft seat, and a rotating shaft along the axis of the sieve. The rotating shaft is axially spaced apart and is composed of a cross support frame which is fixedly connected with the inner wall of the cylindrical screen; the rotating shaft is linked with the linkage driving mechanism.

In the above-mentioned anti-clogging screening device for filling sodium metabisulfite, the linkage driving mechanism is rotatably connected to the outer wall of the screening case by a geared motor arranged on the outer wall of the screening case, through the angular contact ball bearing and the shaft seat. The first transmission shaft which is parallel to the axis of the cylindrical screen and the second transmission shaft which is rotatably connected to the screening case and the outer wall of the protective cover through the angular contact ball bearing and the shaft seat and is perpendicular to the first transmission shaft;

The rotating support frame is linked with the power output end of the deceleration motor through a universal joint; the first transmission shaft is linked with the deceleration motor through the cooperation of a belt and a pulley; the second transmission shaft is connected with the first transmission shaft. The first bevel gear is meshed and linked; the end of the second transmission shaft close to the connecting shaft is provided with a second bevel gear, and the connecting shaft is provided with a third bevel gear that meshes with the second bevel gear; a screen on the periphery of the linked drive mechanism A dust cover is provided on the sub-chassis and the protective cover.

In the above-mentioned anti-clogging sodium metabisulfite filling screening device, the outer diameter of the first bevel gear set on the first drive shaft and the second drive shaft is the same; the second bevel gear and the third bevel gear have the same outer diameter; The outer diameter ratio is 1:2.5-4; through the mutual cooperation between the cam, the transmission plate, the guide slide rod and the return spring, the cylindrical screen rotates 1- 1.3 weeks.

In the above-mentioned anti-clogging screening device for filling sodium metabisulfite, the bristle length of the cleaning brush is 3-5CM, the Rockwell hardness is 90-130, and the diameter is 0.5-0.8mm.

In the above-mentioned anti-clogging screening device for filling of sodium metabisulfite, the side wall of the screening case corresponding to the cleaning brush is provided with an observation window covered with transparent glass, and the side of the screening case corresponding to the lower end of the cleaning brush is provided with an observation window. The wall is provided with an access hole with a sealing cover;

A mounting plate is fixedly connected to the lower end of each guide sliding rod. On the left and right sides of the length direction opposite to the mounting plate and the cleaning brush, guide positioning buckles are symmetrically arranged one by one, and an end seat is integrally formed at the high end of the mounting plate. , the end seat is provided with a first limit blind hole adapted to the cleaning brush seat, a positioning end cover is detachably connected to the lower end of the mounting plate by screws, and the positioning end cover is formed with the mounting plate and cleaning The brush seat is adapted to the second limit blind hole; the cleaning brush is detachably fixed on the mounting plate through the cooperation of the guide positioning buckle, the end seat and the positioning end cover.

After the present invention adopts the above structure, the cleaning brushes parallel to the axis of the cylindrical sieve are provided. In the working state, when the cylindrical sieve rotates around the axis of the cylindrical body to screen industrial sodium metabisulfite, the cam, the transmission plate, the guide The mutual cooperation between the sliding rod and each return spring makes the cleaning brush reciprocate along the radial direction of the cylindrical screen to clean the screen holes of the cylindrical screen and avoid the blockage of the screen holes. The structure is simple, compact and easy to use. At the same time, after continuous attempts, the bristles with reasonable hardness and diameter are selected, which can ensure the cleaning effect of the sieve holes while ensuring that the bristles themselves are not easily damaged.

Through the set linkage drive mechanism, in the process of driving the cylinder screen to rotate around the cylinder axis to screen the sodium metabisulfite, the cam can be driven to rotate through the cooperation between the first transmission shaft, the second transmission shaft and the bevel gears at the same time. , thereby driving the cleaning brush to reciprocate along the radial direction of the cylindrical screen to clean the screen holes of the cylindrical screen, the structure is compact, the energy consumption is reduced, and the cost in use is reduced.

At the same time, combined with the rotation speed of the motor, by reasonably setting the length of the bristles of the cleaning brush and the ratio of the outer diameter of the second bevel gear to the third bevel gear, the bristles of the cleaning brush are in the process of contacting the cylindrical screen until the bristles are separated from the cylindrical screen. The cylindrical sieve rotates for 1-1.3 circles, so that all the sieve holes on the cylindrical sieve can be cleaned, the cleaning effect is good, and the existence of cleaning dead corners is avoided; this structure can avoid the frequent contact of the bristles with the cylindrical sieve and reduce the bristles. wear, thereby increasing the service life of the cleaning brush.

In addition, the cleaning brush is detachably fixed on the mounting plate through the cooperation of the guide positioning buckle, the end seat and the positioning end cover, which is convenient for disassembly and assembly and easy to replace, and the set guide positioning buckle can ensure the effect of fixing the cleaning brush. , more stable in use.

Description of drawings

The present invention will be further described in detail below with reference to the embodiments in the accompanying drawings, but it does not constitute any limitation to the present invention.

Figure 1 is a schematic diagram of the overall structure of the present invention.

Figure 2 is a rear view of the present invention.

FIG. 3 is a schematic view of the structure of the cross support frame of the present invention.

FIG. 4 is a schematic view of the structure of the mounting plate of the present invention.

FIG. 5 is a partial enlarged schematic view of the position A in FIG. 4 .

FIG. 6 is a partial enlarged schematic view of B in FIG. 4 .

Figure 7 is a bottom view of the cleaning brush and mounting plate of the present invention.

FIG. 8 is a cross-sectional view taken along the line C-C in FIG. 7 .

In the figure: 1. Screening chassis; 1a, screening part; 1b, bucket connecting part; 2, cylindrical screen; 3, rotating support frame; 3a, rotating shaft; 3b, cross support frame; ; 4a, feed hopper; 4b, feed pipe; 5, coarse material collection assembly; 5a, arc collection plate; 5b, arc seal plate; 6, fine material collection pipe; 7, cleaning brush; 8, guide Sliding rod; 9, protective cover; 10, transmission plate; 11, return spring; 12, connecting shaft; 13, cam; 14, linkage drive mechanism; 14a, reduction motor; 14b, first transmission shaft; 14c, second transmission Shaft; 14d, the first bevel gear; 14e, the second bevel gear; 14f, the third bevel gear; 15, the dust cover; 16, the observation window; 17, the inspection hole; 18, the mounting plate; 19, the guide positioning buckle ; 20, the end seat; 21, the first limit blind hole; 22, the positioning end cover; 23, the second limit blind hole.

Detailed ways

Referring to Fig. 1 to Fig. 8, a kind of anti-blocking sodium metabisulfite filling screening device of the present invention comprises a screening case 1, and a cylindrical screen with both ends open is inclined in the screening case 1. 2. A rotating support frame 3 that is rotatably connected to the screening case 1 through angular contact ball bearings and shaft seats is fixedly connected in the cylindrical screen 2; specifically, the rotating support frame 3 is arranged along the axis of the cylindrical screen 2 And through the angular contact ball bearing and the shaft seat, it is composed of a rotating shaft 3a that is rotatably connected to the screening case 1, and a cross support frame 3b that is axially spaced along the rotating shaft 3a and is fixedly connected to the inner wall of the cylindrical screen 2; the rotating shaft is composed of 3a is linked with the linkage drive mechanism 14. Through the mutual cooperation between the rotating shaft 3a and the cross support frame 3b, the cylindrical sieve 2 can be rotated along the axis of the cylinder, and the sodium pyrosulfite can be sieved.

Specifically, the screening case 1 is provided with a feeding assembly 4 adapted to the high-end opening of the cylindrical screen 2. The feeding assembly 4 consists of a feeding hopper 4a arranged on the outer side wall of the screening case 1 and a guide It is composed of a feeding pipe 4b which is connected to the lower end of the feeding hopper 4a and whose free end extends into the high end opening of the cylindrical screen 2, so as to facilitate the input of sodium metabisulfite into the cylindrical screen 2, the structure is simple and the use is convenient. A coarse material collecting assembly 5 is adapted on the screening case 1 at the low end of the cylindrical screen 2, and the coarse material collecting assembly 5 is arranged on the periphery of the bottom of the low end of the cylindrical screen 2 and obliquely passes through the side of the screening case 1. The arc-shaped collecting plate 5a of the wall and the arc-shaped sealing plate 5b which is arranged on the outer side wall of the screening cabinet 1 and cooperates with the arc-shaped collecting plate 5a to form an annular shape, can collect the coarser particles of sodium metabisulfite after screening. . A fine material collection pipe 6 is connected to the bottom of the screening box 1, and the sodium metabisulfite can be screened through the mutual cooperation between the components.

Wherein, the screening case 1 is composed of a screening part 1a and a bucket-shaped connecting part 1b integrally formed at the bottom of the screening part 1a; the rotating support frame 3 is arranged in the screening part 1a, and the feeding assembly 4 Set on the screening part 1a corresponding to the high end of the cylindrical screen 2, the coarse material collecting assembly 5 is set on the screening part 1a corresponding to the low end of the cylindrical screen 2, and the protective cover 9 is set on the screen On the outer top of the sub-section 1a, the fine material collecting pipe 6 is arranged at the outlet of the bucket-shaped connecting part 1b. The structure is simple and the cost is low. The bucket-shaped connecting portion 1b provided can facilitate the collection of sodium metabisulfite with fine particles through the fine material collection pipe 6 to avoid the accumulation of powder in the box.

Between the cylindrical screen 2 and the inner top of the screening case 1, there is a cleaning brush 7 that is parallel to the axis of the cylindrical screen 2, and the outer top of the cleaning brush 7 is parallel and spaced with the axis of the cylindrical screen 2. The guide slide bar 8, each guide slide bar 8 moves through the top of the screening case 1; the outer top of the screening case 1 around the guide slide bar 8 is provided with a protective cover 9, and a transmission plate 10 is provided in the protective cover 9 , the upper ends of each guide slide bar 8 are respectively fixedly connected with the transmission plate 10; a return spring 11 is sleeved on each guide slide bar 8 in the protective cover 9, and a connecting shaft is connected in the protective cover 9 through the matching rotation of the bearing and the shaft seat 12. The connecting shaft 12 is fixedly connected with a cam 13 that is matched with the transmission plate 10; in the working state, the cylindrical screen 2 rotates around the axis of the cylinder, and the cam 13, the transmission plate 10, each guide slide bar 8 and each reset The springs 11 cooperate with each other, and the cleaning brush 7 reciprocates along the radial direction of the cylindrical screen 2 to clean the screen holes of the cylindrical screen 2 to avoid blockage of the screen holes. The structure is simple, compact and easy to use.

Preferably, the screening case 1 is provided with a linkage drive mechanism 14 that is linked with the rotating support frame 3 and the connecting shaft 12; The contact ball bearing and the shaft seat are rotatably connected to the outer wall of the screening case 1 and the first transmission shaft 14b, which is parallel to the axis of the cylindrical screen 2, and is rotatably connected to the screening case 1 and the protective cover through the angular contact ball bearing and the shaft seat. 9. The second drive shaft 14c on the outer wall and perpendicular to the first drive shaft 14b is formed; the rotating support frame 3 is linked with the power output end of the deceleration motor 14a through a universal joint; the first drive shaft 14b is connected by a belt The second transmission shaft 14c and the first transmission shaft 14b are meshed and linked by the first bevel gear 14d; the end of the second transmission shaft 14c close to the connecting shaft 12 is provided with a first Two bevel gears 14e, a third bevel gear 14f meshing with the second bevel gear 14e is arranged on the connecting shaft 12; dust-proof. By setting the linkage drive mechanism 14 to be linked with the rotating support frame 3 and the connecting shaft 12 at the same time, in the process of driving the cylindrical screen 2 to rotate around the cylinder axis to screen the sodium metabisulfite, the first transmission shaft 14b, the second transmission shaft 14b, the second transmission shaft 14b, the second transmission shaft The mutual cooperation between the shaft 14c and the bevel gears drives the cam 13 to rotate, thereby driving the cleaning brush 7 to reciprocate along the radial direction of the cylindrical screen 2 to clean the screen holes of the cylindrical screen 2. The structure is compact and the energy consumption is reduced. consumption, reducing the cost of use.

Preferably, the outer diameter of the first bevel gear 14d provided on the first transmission shaft 14b and the second transmission shaft 14c is the same, so that the rotation speed of the first transmission shaft 14b and the second transmission shaft 14c and the cylindrical screen 2 can be the same; The outer diameter ratio of the second bevel gear 14e and the third bevel gear 14f is 1:2.5-4; through the cooperation between the cam 13, the transmission plate 10, the guide slide bar 8 and the return spring 11, the cleaning brush 7 and the During the process of the cylindrical screen 2 from contact to non-contact, the cylindrical screen 2 rotates for 1-1.3 circles, so that all the sieve holes on the cylindrical screen 2 can be cleaned, the cleaning effect is good, and the dead angle of cleaning can be avoided. This original design can not only avoid frequent contact between the cleaning brush and the cylindrical screen, but also ensure the cleaning effect. In the existing similar designs, the cleaning brush and the cylindrical screen are either kept in constant contact or are in frequent contact. However, due to the short contact time and the irregular rotation between the cleaning brush and the cylindrical screen, the cleaning brush even Frequent contact with the cylindrical screen does not guarantee the effective cleaning of the cylindrical screen at 360 degrees. Some places are particularly clean, but some places are not cleaned.

Further, the bristle length of the cleaning brush 7 is 3-5CM, the Rockwell hardness is 90-130, and the diameter of the bristles is 0.5-0.8. After continuous attempts, the bristles with reasonable hardness and diameter are selected, which can ensure the cleaning effect of the sieve holes while ensuring that the bristles themselves are not easily damaged. The length of the bristles is limited to ensure the contact time with the cylindrical screen, and cooperate with the second bevel gear and the third bevel gear to achieve one contact and clean the cylindrical screen for 1-1.3 weeks.

Preferably, the side wall of the screening cabinet 1 corresponding to the cleaning brush 7 is provided with an observation window 16 covered with transparent glass, so that the use state of the cleaning brush 7 can be easily observed. An inspection hole 17 with a sealing cover is provided on the side wall of the screening case 1 corresponding to the lower end of the cleaning brush 7, so that the cleaning brush 7 can be replaced; further, a mounting plate 18 is fixedly connected to the lower end of each guide slide bar 8 , on the opposite end face of the mounting plate 18 and the cleaning brush 7, the left and right sides along the length direction are respectively provided with guiding and positioning buckles 19 symmetrically one by one, which can make the connection between the cleaning brush 7 and the mounting plate 18 more stable. Not easy to fall off. An end seat 20 is integrally formed at the high end of the mounting plate 18 , a first limit blind hole 21 adapted to the brush seat of the cleaning brush 7 is arranged on the end seat 20 , and a positioning hole 21 is detachably connected to the lower end of the mounting plate 18 by screws. The end cover 22 is formed in the positioning end cover 22 with a second limit blind hole 23 that is adapted to the mounting plate 18 and the brush seat of the cleaning brush 7; The end cover 22 is detachably fixed on the mounting plate 18, which can facilitate the replacement of the cleaning brush 7. The operation is simple and the structure is stable. During use, the cleaning brush 7 is not easy to fall off.

When in use, the cylindrical screen 2 rotates around the axis of the cylinder, and the industrial sodium metabisulfite is put into the cylindrical screen 2 through the feeding hopper 4a for screening, the coarse material is discharged through the coarse material collection component 5, and the fine material is discharged through the fine material collection pipe. 6 discharge.

During the screening process, the cleaning brush 7 reciprocates along the radial direction of the cylindrical screen 2 through the cooperation between the cam 13, the transmission plate 10, the guide slide bars 8 and the return springs 11, and passes through the second Due to the cooperation between the bevel gear 14e and the third bevel gear 14f, in the process that the cleaning brush 7 is not in contact with the cylindrical screen 2, the cylindrical screen 2 rotates for 1-1.3 circles, so that the cylindrical screen 2 can be removed. All the sieve holes on the top are cleaned, and the cleaning effect is good.

The above-mentioned embodiments are preferred embodiments of the present invention, and are only used to facilitate the description of the present invention, and are not intended to limit the present invention in any form. Within the scope of the technical features of the present invention, equivalent embodiments with partial changes or modifications made by using the technical content disclosed in the present invention, and without departing from the technical features of the present invention, still belong to the scope of the technical features of the present invention.

Claims (9)

1. an anti-clogging sodium metabisulfite filling screening device, comprising a screening case (1), is characterized in that, in the described screening case (1), a cylindrical sieve (2) with both ends open is inclined in the screen case (1). ), a rotating support frame (3) that is rotatably connected to the screening case (1) through the cooperation of angular contact ball bearings and shaft seats is fixedly connected in the cylindrical screen (2); the screening case (1) is provided with A feed assembly (4) adapted to the high-end opening of the cylindrical screen (2) is provided with a coarse material collecting assembly (5) adapted to the screening case (1) at the low end of the cylindrical screen (2). The bottom of the sub-chassis (1) is conductively connected with a fine material collection pipe (6); A cleaning brush (7) is arranged between the cylindrical screen (2) and the inner top of the screening case (1), which is parallel to the axis of the cylindrical screen (2), and is parallel and spaced at the outer top of the cleaning brush (7). There is a guide slide bar (8) perpendicular to the axis of the cylindrical screen (2), and each guide slide bar (8) moves through the top of the screening case (1); the screening on the periphery of the guide slide bar (8) A protective cover (9) is arranged on the outer top of the chassis (1), a transmission plate (10) is arranged in the protective cover (9), and the upper ends of each guide slide bar (8) are respectively fixedly connected with the transmission plate (10); Each guide sliding rod (8) in (9) is sleeved with a return spring (11), and a connecting shaft (12) is rotatably connected in the protective cover (9) through a bearing and a shaft seat, and the connecting shaft (12) A cam (13) matched with the transmission plate (10) is fixedly connected thereon, and a linkage drive mechanism (14) linked with the rotating support frame (3) and the connecting shaft (12) is arranged on the screening case (1). ; In the working state, the cylindrical screen (2) rotates around the axis of the cylinder, and the cleaning is carried out by the mutual cooperation between the cam (13), the transmission plate (10), each guide slide bar (8) and each return spring (11). The brush (7) reciprocates along the radial direction of the cylindrical screen (2) to clean the screen holes of the cylindrical screen (2). 2. a kind of anti-clogging sodium metabisulfite filling screening device according to claim 1, is characterized in that, described screening case (1) is formed by screening section (1a) and integrally formed in screening section (1a). 1a) It is composed of a bucket-shaped connecting part (1b) at the bottom; the rotating support frame (3) is arranged in the screening part (1a), and the feeding component (4) is arranged in a phase with the high end of the cylindrical screen (2). On the corresponding screening part (1a), the coarse material collecting assembly (5) is arranged on the screening part (1a) corresponding to the lower end of the cylindrical screen (2), and the protective cover (9) is arranged on the On the outer top of the screening part (1a), the fine material collecting pipe (6) is arranged at the outlet of the bucket-shaped connecting part (1b). 3. a kind of anti-clogging sodium metabisulfite filling screening device according to claim 1, is characterized in that, described feeding assembly (4) is provided with the feeding on the outer side wall of screening case (1) The hopper (4a) and the feeding pipe (4b) are connected to the lower end of the feeding hopper (4a) and the free end extends into the opening of the upper end of the cylindrical screen (2). 4. a kind of anti-clogging sodium metabisulfite filling screening device according to claim 1, is characterized in that, described coarse material collection assembly (5) is arranged on the periphery of the bottom bottom of cylindrical screen (2) low end and An arc-shaped collecting plate (5a) inclined through the side wall of the screening cabinet (1) and an arc-shaped sealing plate (5a) arranged on the outer side wall of the screening cabinet (1) and cooperating with the arc-shaped collecting plate (5a) to form an annular shape 5b) Composition. 5. a kind of anti-clogging sodium metabisulfite filling screening device according to claim 1, is characterized in that, described rotating support frame (3) is set along the axis of cylindrical sieve (2) and by angular contact ball The bearing and the shaft seat are composed of a rotating shaft (3a) rotatably connected with the screening case (1) and a cross support frame (3b) arranged at an axial interval along the rotating shaft (3a) and fixedly connected to the inner wall of the cylindrical screen (2). ; The rotating shaft (3a) is linked with the linkage drive mechanism (14). 6. a kind of anti-clogging sodium metabisulfite filling screening device according to claim 1, is characterized in that, described linkage drive mechanism (14) is provided with the gear motor ( 14a), the first transmission shaft (14b) which is rotatably connected to the outer wall of the screening case (1) and is parallel to the axis of the cylindrical screen (2) through the angular contact ball bearing and the shaft seat, and the first transmission shaft (14b) through the angular contact ball bearing and the shaft seat It is composed of a second drive shaft (14c) that is rotatably connected to the screening case (1) and the outer wall of the protective cover (9) and is perpendicular to the first drive shaft (14b); The rotating support frame (3) is linked and connected to the power output end of the deceleration motor (14a) through a universal joint; the first transmission shaft (14b) is linked to the deceleration motor (14a) through the cooperation of a belt and a pulley; The second transmission shaft (14c) and the first transmission shaft (14b) are meshed and linked by the first bevel gear (14d); the end of the second transmission shaft (14c) close to the connecting shaft (12) is provided with a second bevel gear (14d). A gear (14e), a third bevel gear (14f) meshing with the second bevel gear (14e) is arranged on the connecting shaft (12); a screening case (1) and a protective cover on the periphery of the linkage drive mechanism (14) (9) is provided with a dust cover (15). 7. a kind of anti-clogging sodium metabisulfite filling screening device according to claim 6, is characterized in that, the first cone set on the described first transmission shaft (14b) and the second transmission shaft (14c) The outer diameter of the gear (14d) is the same; the outer diameter ratio of the second bevel gear (14e) and the third bevel gear (14f) is 1:2.5-4; through the cam (13), the transmission plate (10), the guide sliding rod The mutual cooperation between (8) and the return spring (11), the cleaning brush (7) and the cylindrical screen (2) from contact to non-contact process, the cylindrical screen (2) rotates 1-1.3 circles. 8. a kind of anti-clogging sodium metabisulfite filling screening device according to claim 1, is characterized in that, the bristle length of described cleaning brush (7) is 3-5CM, and Rockwell hardness is 90-130 , the diameter is 0.5-0.8mm. 9. a kind of anti-clogging sodium metabisulfite filling screening device according to claim 1, is characterized in that, the corresponding screening case (1) side wall of described cleaning brush (7) is provided with covering transparent glass The observation window (16) of the cleaning brush (7) is provided with an inspection hole (17) with a sealing cover on the side wall of the screening case (1) corresponding to the lower end of the cleaning brush (7); A mounting plate (18) is fixedly connected to the lower end of each guide sliding rod (8), and guide positioning is symmetrically arranged on the left and right sides along the length direction on the end face of the mounting plate (18) opposite to the cleaning brush (7). The buckle (19) is integrally formed with an end seat (20) at the high end of the mounting plate (18), and a first limit blind hole ( 21), a positioning end cover (22) is detachably connected to the lower end of the mounting plate (18) by means of screws, and the positioning end cover (22) is formed with a brush seat corresponding to the mounting plate (18) and the cleaning brush (7). an adapted second limit blind hole (23); the cleaning brush (7) is detachably fixed on the mounting plate (18) through the cooperation of the guide positioning buckle (19), the end seat (20) and the positioning end cover (22) .

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