An apparatus for producing acrylamide and a method of operation thereof

Abstract

The application discloses a kind of equipment for producing acrylamide and its working method, the equipment for producing acrylamide, including tank body, front chamber and rear chamber with upper end opening are equipped in the tank body, the tank body is fixed with cover plate in the upper end of front chamber and rear chamber, the front end of the tank body is close to the cover plate and is equipped with feeding port communicated with front chamber, rear end is close to lower end and is equipped with liquid outlet communicated with rear chamber, the plug is removably equipped at the liquid outlet;The cover plate is equipped with vertical liquid suction pipe, the front chamber is equipped with stirring assembly outside vertical liquid suction pipe;The cover plate is equipped with liquid pump and filter device, the inlet of the liquid pump is communicated with the upper end of vertical liquid suction pipe, the outlet is communicated with the liquid inlet hole of filter device, and the liquid outlet hole of the filter device is communicated with the rear chamber;Filter device and stirring device, and liquid pump are all arranged on the tank body in the application, so that the whole equipment is more compact, and the occupied space is small.

Description

Technical Field

[0001] This invention belongs to the field of acrylamide production technology, specifically a device for producing acrylamide and its working method. Background Technology

[0002] Acrylamide is a white crystalline chemical substance and a raw material for the production of polyacrylamide. Polyacrylamide is mainly used in oil and gas extraction, papermaking, water treatment, mineral washing and beneficiation, metallurgy, superabsorbent resins, and adhesives. Acrylonitrile, the raw material, reacts with water at around 20°C using a bio-enzyme catalyst (cultured in a microbial chamber, produced in a fermentation workshop) to produce an aqueous solution of acrylamide. Further processes such as refining, concentration, crystallization, centrifugation, and drying yield the acrylamide crystalline product. In the culture chamber and fermentation workshop, fermentation occurs in fermentation tanks to form a fermentation broth, which then requires filtration. Currently, the fermentation and filtration devices are separate, occupying a significant amount of space. Summary of the Invention

[0003] To address the problems mentioned in the background section, the present invention provides an apparatus for producing acrylamide.

[0004] To achieve the above objectives, the present invention provides the following technical solution: An apparatus for producing acrylamide, comprising a tank body, wherein the tank body has a front chamber and a rear chamber with an upper opening; a cover plate is fixedly provided at the upper end of the front chamber and the rear chamber; a feeding port communicating with the front chamber is provided at the front end of the tank body near the cover plate, and a liquid outlet communicating with the rear chamber is provided at the rear end near the lower end; a stopcock is detachably provided at the liquid outlet; a vertical suction pipe located at the center of the front chamber is provided on the cover plate; a stirring assembly is provided inside the front chamber outside the vertical suction pipe; a pump and a filter device are provided on the cover plate; the inlet of the pump is connected to the upper end of the vertical suction pipe, and the outlet is connected to the inlet of the filter device; the outlet of the filter device is connected to the rear chamber.

[0005] Furthermore, a liquid collection tank is provided at the bottom of the front chamber, and the lower end of the vertical suction pipe extends into the liquid collection tank.

[0006] Furthermore, the stirring assembly includes a bushing rotatably connected to the outside of a vertical suction tube. The vertical suction tube has a limiting protrusion near its lower end on its outer side. The lower end of the bushing abuts against the limiting protrusion. A first gear is fixedly mounted on the upper end of the bushing. A first motor is fixedly mounted on the cover plate. The output shaft of the first motor extends vertically downward into the front chamber and is fixedly mounted with a second gear that meshes with the first gear. Radial stirring rods are arranged in an array on the outer circumference of the bushing.

[0007] Furthermore, the filtration device includes a filter body, which has a through-groove rotating groove. A rotating block is rotatably connected within the rotating groove, and the outer circumference of the rotating block is sealed to the inner wall of the rotating groove. An upper end cap is fixedly provided at the upper end of the filter body, and a lower end cap is fixedly provided at the lower end. An arc-shaped groove communicating with the rotating groove is provided within the filter body. An inlet hole communicating with the arc-shaped groove is provided at the front end of the filter body, and an outlet hole communicating with the arc-shaped groove is provided at the rear end. The axis of the inner arc surface of the arc-shaped groove is coaxial with the axis of the rotating block. A discharge port communicating with the rotating groove is provided at the right end of the filter body. Six filter components are evenly spaced along the circumference within the rotating block, and the rotation direction of the filter components is opposite to the flow direction of the fermentation broth within the arc-shaped groove. A drive component is provided on the filter body to drive the rotating block and thus rotate the filter components. When the rotating block drives the filter assembly into the arc-shaped groove, the filter plate in the filter assembly extends radially out of the rotating block and abuts against the inner arc surface of the arc-shaped groove. When the rotating block drives the filter assembly away from the arc-shaped groove, the filter plate in the filter assembly retracts radially into the rotating block. When the rotating block drives the filter assembly to the discharge port, the pusher plate in the filter assembly extends along the movement direction of the filter plate, and the arc surface at the end of the pusher plate is coplanar with the circumferential side surface of the rotating block. When the rotating block drives the filter assembly away from the discharge port, the pusher plate in the filter assembly retracts along the movement direction of the filter plate, and the pusher plate and the filter plate form a storage trough for impurities on the outside of the rotating block.

[0008] Furthermore, the filter assembly includes a filter plate and a pusher plate. The rotating block has a radial groove, and the filter plate is slidably connected to the radial groove along the radial direction of the rotating block. A first spring is provided in the radial groove to force the filter plate to extend out of the radial groove. A front inclined surface is provided between the front end of the arc-shaped groove and the rotating groove, and a rear inclined surface is provided between the rear end and the rotating groove. When the rotating block drives the filter plate to move and the filter plate abuts against the front inclined surface, the filter plate retracts into the rotating block under the action of the front inclined surface as the rotating block rotates. When the rotating block drives the filter plate to move and the filter plate abuts against the rear inclined surface, the filter plate extends out of the rotating block through the rear inclined surface under the action of the first spring as the rotating block rotates.

[0009] Furthermore, the upper end cover is provided with an upper large arc surface and an upper small arc surface that are coaxial with the rotating block, as well as two upper transition surfaces for connecting the upper large arc surface and the upper small arc surface; the filter plate is provided with an upwardly extending upper protrusion at its proximal end. When the rotating block drives the filter plate to the discharge port, the upper protrusion abuts against the upper small arc surface. When the rotating block drives the filter plate away from the discharge port, the upper protrusion moves away from the upper small arc surface. When the filter plate moves to the arc-shaped groove, the upper protrusion abuts against the upper large arc surface.

[0010] Furthermore, the pusher plate is slidably connected within the radial groove and arranged side-by-side with the filter plate. A second spring is provided within the radial groove to force the pusher plate out of the groove. The lower end cover contains a large lower arc surface and a small lower arc surface coaxial with the rotating block, as well as a first transition surface and a second transition surface connecting the large lower arc surface and the small lower arc surface. The proximal end of the pusher plate has a downwardly extending lower protrusion. When the rotating block drives the filter plate away from the outlet, the lower protrusion abuts against the small lower arc surface after passing the second transition surface, and the pusher plate retracts into the radial groove. The pusher plate and the filter plate form a storage trough at the distal end of the radial groove. When the rotating block drives the pusher plate to the outlet, the lower protrusion abuts against the large lower arc surface after passing the first transition surface under the action of the second spring. The arc surface at the end of the pusher plate is coplanar with the circumferential side surface of the rotating block, and the pusher plate pushes impurities from the storage trough into the outlet.

[0011] This invention also discloses a method for operating the above-mentioned equipment for producing acrylamide, comprising the following steps: first, the raw material is fed into the front chamber through the feeding port, and the stirring component is controlled to stir the raw material in the front chamber for a set time; then, the stirring component is controlled to stop working and stand for a set time to form a fermentation broth; then, the stirring component is controlled to work, and the liquid pump is simultaneously started to draw the fermentation broth through the vertical suction pipe and send it into the filtration device; the fermentation broth entering the filtration device is filtered and then discharged into the rear chamber; when it is necessary to collect the filtered fermentation broth, simply open the stopcock.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] (1) In this invention, the filtration device, stirring device, and liquid pump are all installed on the tank, making the overall equipment more compact and occupying less space;

[0014] (2) A liquid collection tank is provided at the bottom of the front chamber, which facilitates the vertical suction pipe to draw up the fermentation liquid;

[0015] (3) When using the filtration device of the present invention, it is only necessary to first control the rotating block to drive the filter plate and the pusher plate to rotate, and then control the fermentation liquid to enter the inlet hole to filter impurities in the fermentation liquid and remove the filtered impurities. There is no need to stop the machine to clean the filtered impurities, which can effectively improve the filtration efficiency of the fermentation liquid. Attached Figure Description

[0016] Figure 1 This is a main sectional view of the present invention;

[0017] Figure 2-3 This is a three-dimensional structural diagram of the filtration device of the present invention;

[0018] Figure 4 This is a front view of the filtering device of the present invention;

[0019] Figure 5 This is a top view of the filtering device of the present invention;

[0020] Figure 6 for Figure 4 A cross-sectional view along the AA direction;

[0021] Figure 7 for Figure 5 Cross-sectional view along the BB direction;

[0022] Figure 8 This is a top view of the filter device of the present invention with the fourth gear omitted;

[0023] Figure 9 This is a bottom view of the filter device of the present invention with the fourth gear omitted;

[0024] Figure 10 This is a perspective view of the filter device of the present invention with the lower end cap omitted. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1 to 10 As shown, this embodiment provides equipment for producing acrylamide, including a tank 20. The tank 20 has a front chamber 21 and a rear chamber 22 with an opening at the top. A cover plate 23 is fixedly provided at the upper end of the front chamber 21 and the rear chamber 22. The front end of the tank 20 near the cover plate 23 has a feeding port 21a communicating with the front chamber 21, and the rear end near the lower end has a liquid outlet 22a communicating with the rear chamber 22. A stopcock 24 is detachably provided at the liquid outlet 22a. The cover plate 23 has... A vertical suction pipe 25 is provided at the center of the front chamber 21. A liquid collection tank 21b is provided at the bottom of the front chamber 21, and the lower end of the vertical suction pipe 25 extends into the liquid collection tank 21b. A stirring assembly is provided inside the front chamber 21 outside the vertical suction pipe 25. A liquid pump 26 and a filter device 27 are provided on the cover plate 23. The inlet of the liquid pump 26 is connected to the upper end of the vertical suction pipe 25, and the outlet is connected to the liquid inlet of the filter device 27. The liquid outlet of the filter device 27 is connected to the rear chamber 22.

[0027] In this embodiment, the stirring assembly includes a bushing 28, which is rotatably connected to the outside of a vertical suction pipe 25. The vertical suction pipe 25 has a limiting protrusion 25a on its outer side near the lower end. The lower end of the bushing 28 abuts against the limiting protrusion 25a. A first gear 29 is fixedly provided at the upper end of the bushing 28. A first motor 30 is fixedly provided on the cover plate 23. The output shaft of the first motor 30 extends vertically downward into the front chamber 21 and is fixedly provided with a second gear 31 that meshes with the first gear 29. Radial stirring rods 32 are arranged in an array on the outer circumference of the bushing 28.

[0028] The filtration device 27 includes a filter body 1, which has a through-hole rotating groove 1a inside. A rotating block 2 is rotatably connected inside the rotating groove 1a, and the outer circumference of the rotating block 2 is sealed to the inner wall of the rotating groove 1a. An upper end cover 3 is fixedly provided at the upper end of the filter body 1, and a lower end cover 4 is fixedly provided at the lower end. An arc-shaped groove 1b communicating with the rotating groove 1a is provided inside the filter body 1. An inlet hole 1c communicating with the arc-shaped groove 1b is provided at the front end of the filter body 1, and an outlet hole 1d communicating with the arc-shaped groove 1b is provided at the rear end. The axis of the inner arc surface of the arc-shaped groove 1b is coaxial with the axis of the rotating block 2. An outlet 1e communicating with the rotating groove 1a is provided at the right end of the filter body 1. Six filter components are evenly spaced along the circumference inside the rotating block 2, and the rotation direction of the filter components is opposite to the flow direction of the fermentation liquid in the arc-shaped groove 1b. A drive component is provided on the filter body 1 to drive the rotating block 2 to rotate the filter components.

[0029] In this embodiment, when the rotating block 2 drives the filter assembly into the arc-shaped groove 1b, the filter plate 5 in the filter assembly extends radially out of the rotating block 2 and abuts against the inner arc surface of the arc-shaped groove 1b. When the rotating block 2 drives the filter assembly away from the arc-shaped groove 1b, the filter plate 5 in the filter assembly retracts radially into the rotating block 2. When the rotating block 2 drives the filter assembly to the discharge port 1e, the pusher plate 6 in the filter assembly extends along the movement direction of the filter plate 5, and the arc surface at the end of the pusher plate 6 is coplanar with the circumferential side surface of the rotating block 2. When the rotating block 2 drives the filter assembly away from the discharge port 1e, the pusher plate 6 in the filter assembly retracts along the movement direction of the filter plate 5 into the rotating block 2, and the pusher plate 6 and the filter plate 5 form a storage tank 201 for holding impurities on the outside of the rotating block 2.

[0030] In this embodiment, the drive assembly includes a reduction motor 7 fixedly installed on the left side of the filter body 1. A third gear 8 is fixedly provided at the upper end of the motor. A convex shaft 2a extending upward from the end cover is provided at the upper end of the rotating block 2. A fourth gear 9, located above the upper end cover 3 and meshing with the third gear 8, is fixedly provided at the upper end of the convex shaft 2a. The reduction motor 7 drives the third gear 8 to rotate, and the rotation of the third gear 8 drives the fourth gear 9 to rotate. The diameter of the third gear 8 is smaller than the diameter of the fourth gear 9.

[0031] In this embodiment, the filter assembly includes a filter plate 5 and a pusher plate 6. The rotating block 2 has a radial groove 2b. The filter plate 5 is slidably connected to the radial groove 2b along the radial direction of the rotating block 2. A first slide rod 10 is fixedly installed in the radial groove 2b along the radial direction of the rotating block 2, and the filter plate 5 is slidably connected to the first slide rod 10. A first spring 11 is provided in the radial groove 2b to force the filter plate 5 to extend out of the radial groove 2b. The first spring 11 is sleeved on the first slide rod 10. The arc-shaped cut... A front inclined surface 101 is provided between the front end of the groove 1b and the rotating groove 1a, and a rear inclined surface 102 is provided between the rear end and the rotating groove 1a. When the rotating block 2 drives the filter plate 5 to move and the filter plate 5 abuts against the front inclined surface 101, the filter plate 5 retracts into the rotating block 2 under the action of the front inclined surface 101 as the rotating block 2 rotates. When the rotating block 2 drives the filter plate 5 to move and the filter plate 5 abuts against the rear inclined surface 102, the filter plate 5 extends out of the rotating block 2 through the rear inclined surface 102 under the action of the first spring 11 as the rotating block 2 rotates. The upper end cover 3 is provided with an upper large arc surface 3a and an upper small arc surface 3b that are coaxial with the rotating block 2, as well as two upper transition surfaces 3c for connecting the upper large arc surface 3a and the upper small arc surface 3b; the filter plate 5 is provided with an upwardly extending upper protrusion 5a at its proximal end. When the rotating block 2 drives the filter plate 5 to move to the discharge port 1e, the upper protrusion 5a abuts against the upper small arc surface 3b. When the rotating block 2 drives the filter plate 5 away from the discharge port 1e, the upper protrusion 5a moves away from the upper small arc surface 3b. When the filter plate 5 moves to the arc-shaped groove 1b, the upper protrusion 5a abuts against the upper large arc surface 3a.

[0032] In this embodiment, the pusher plate 6 is slidably connected within the radial groove 2b and arranged parallel to the filter plate 5. A second slide rod 12, parallel to the first slide rod 10, is fixedly installed within the radial groove 2b. The pusher plate 6 is slidably connected to the second slide rod 12. A second spring 13, forcing the pusher plate 6 to extend out of the radial groove 2b, is provided within the radial groove 2b. The second spring 13 is sleeved on the second slide rod 12. The lower end cover 4 contains a lower large arc surface 4a and a lower small arc surface 4b, coaxial with the rotating block 2, and a lower transition surface 4c and a lower second transition surface 4d connecting the lower large arc surface 4a and the lower small arc surface 4b. The pusher plate 6 is slidably connected within the radial groove 2. The plate 6 has a downwardly extending lower protrusion 6a at its proximal end; when the rotating block 2 drives the filter plate 5 away from the discharge port 1e, the lower protrusion 6a abuts against the lower small arc surface 4b after passing the lower second transition surface 4d, and the pusher plate 6 retracts into the radial groove 2b. The pusher plate 6 and the filter plate 5 form a storage trough 201 at the distal end of the radial groove 2b; when the rotating block 2 drives the pusher plate 6 to move to the discharge port 1e, the lower protrusion 6a abuts against the lower large arc surface 4a after passing the lower transition surface 4c under the action of the second spring 13. The arc surface at the end of the pusher plate 6 is coplanar with the circumferential side surface of the rotating block 2, and the pusher plate 6 pushes the impurities in the storage trough 201 into the discharge port 1e.

[0033] This embodiment also discloses a method of operating the above-mentioned equipment for producing acrylamide, including the following steps: First, the raw material is fed into the front chamber 21 through the feeding port 21a, and the stirring component is controlled to stir the raw material in the front chamber 21 for a set time; then, the stirring component is controlled to stop working and stand for a set time to form fermentation liquid; then, the stirring component is controlled to work, and the liquid pump 26 is controlled to start to draw the fermentation liquid through the vertical suction pipe 25 and send it into the filter device 27. The fermentation liquid entering the filter device 27 is filtered by the filter device 27 and discharged into the rear chamber 22; when it is necessary to collect the filtered fermentation liquid, simply open the stopcock 24, and the filtered fermentation liquid flows out through the liquid outlet 22a.

[0034] When the stirring assembly is working, the first motor 30 drives the first gear 29 to rotate, and the first gear 29 drives the bushing 28 to rotate through the second gear 31. When the bushing 28 rotates, it drives the radial stirring rod 32 to rotate.

[0035] When the filtration device 27 is working, the control reduction motor 7 drives the third gear 8 to rotate, and the rotation of the third gear 8 drives the fourth gear 9 to rotate. The fourth gear 9 drives the rotating block 2 to rotate at a speed of one revolution per minute through the cam shaft 2a. The fermentation liquid drawn by the pump 26 is pumped into the inlet hole 1c. Since there are six filter components on the outer circumference of the rotating block 2, when the rotating block 2 rotates, at least one filter component is located in the arc-shaped groove 1b and between the inlet hole 1c and the outlet hole 1d. As the fermentation liquid enters the arc-shaped groove 1b through the inlet hole 1c, the filter plate 5 in the arc-shaped groove 1b abuts against the inner arc surface of the arc-shaped groove 1b under the action of the first spring 11, so that the fermentation liquid passes through the filter plate 5 in the filter component and flows out from the outlet hole 1d. When the fermentation liquid passes through the filter plate 5, the impurities in the fermentation liquid are filtered out on the filter plate 5. When the rotating block 2 drives the filter plate 5 away from the arc-shaped groove 1b, the filter plate 5 retracts into the radial groove 2b after passing the first inclined surface 101 and compresses the first spring 11. At this time, the filter plate 5 moves relative to the pusher plate 6. The impurities filtered out on the filter plate 5 enter the storage tank 201 under the scraping action of the pusher plate 6. As the rotating block 2 drives the filter plate 5 and the pusher plate 6 to the discharge port 1e, the upper protrusion 5a abuts against the upper small arc surface 3b. At this time, the filter plate 5 remains in the position of retracting into the radial groove 2b. At the same time, the lower protrusion 6a abuts against the lower large arc surface 4a after passing the next transition surface 4c under the action of the second spring 13. The arc surface at the end of the pusher plate 6 is coplanar with the circumferential side surface of the rotating block 2. The pusher plate 6 pushes the impurities in the storage tank 201 into the discharge port 1e.

[0036] When the rotating block 2 drives the filter plate 5 and the pusher plate 6 away from the discharge port 1e, the lower protrusion 6a abuts against the lower small arc surface 4b after passing the lower transition surface 4d. The pusher plate 6 retracts into the radial groove 2b, and the pusher plate 6 and the filter plate 5 form a storage trough 201 for accommodating impurities at the distal end of the radial groove 2b. When the rotating block 2 drives the filter plate 5 into the arc-shaped groove 1b, the filter plate 5 extends out of the radial groove 2b under the action of the first spring 11 and abuts against the inner arc surface of the arc-shaped groove 1b. Because the lower protrusion 6a abuts against the lower small arc surface 4b, the pusher plate 6 remains retracted into the radial groove 2b. This forms a cycle of filtering and removing impurities.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for producing acrylamide, characterized in that, The device includes a tank body, which has a front chamber and a rear chamber with an opening at the top. A cover plate is fixedly installed at the top of the front and rear chambers. A feeding port communicating with the front chamber is located near the cover plate at the front end of the tank body, and a liquid outlet communicating with the rear chamber is located near the bottom end at the rear end. A stopcock is detachably installed at the liquid outlet. A vertical suction pipe is located at the center of the front chamber on the cover plate. A stirring assembly is located outside the vertical suction pipe inside the front chamber. A liquid pump and a filter device are installed on the cover plate. The inlet of the liquid pump is connected to the top of the vertical suction pipe, and the outlet is connected to the inlet of the filter device. The outlet of the filter device is connected to the rear chamber. The filtration device includes a filter body with a through-groove. A rotating block is rotatably connected within the groove, and the outer circumference of the rotating block is sealed to the inner wall of the groove. An upper end cap is fixedly mounted on the upper end of the filter body, and a lower end cap is fixedly mounted on the lower end. An arc-shaped groove communicating with the rotating groove is located within the filter body. A liquid inlet communicating with the arc-shaped groove is located at the front end of the filter body, and a liquid outlet communicating with the arc-shaped groove is located at the rear end. The axis of the inner arc surface of the arc-shaped groove is coaxial with the axis of the rotating block. A discharge port communicating with the rotating groove is located at the right end of the filter body. Six filter components are evenly spaced along the circumference within the rotating block. Each filter component includes a filter plate and a pusher plate, and the rotation direction of the filter components is parallel to that of the fermentation broth. The flow directions within the arc-shaped groove are opposite; the filter body is provided with a drive assembly for driving the rotating block to rotate the filter assembly; when the rotating block drives the filter assembly into the arc-shaped groove, the filter plate in the filter assembly extends radially out of the rotating block and abuts against the inner arc surface of the arc-shaped groove; when the rotating block drives the filter assembly away from the arc-shaped groove, the filter plate in the filter assembly retracts radially into the rotating block; when the rotating block drives the filter assembly to the discharge port, the pusher plate in the filter assembly extends along the movement direction of the filter plate and the arc surface at the end of the pusher plate is coplanar with the circumferential side surface of the rotating block; when the rotating block drives the filter assembly away from the discharge port, the pusher plate in the filter assembly retracts along the movement direction of the filter plate and the pusher plate and the filter plate form a storage tank for impurities on the outside of the rotating block.

2. The equipment for producing acrylamide according to claim 1, characterized in that, The bottom of the front chamber is provided with a liquid collection tank, and the lower end of the vertical suction tube extends into the liquid collection tank.

3. The equipment for producing acrylamide according to claim 1, characterized in that, The stirring assembly includes a bushing rotatably connected to the outside of a vertical suction tube. The vertical suction tube has a limiting protrusion near its lower end on its outer side. The lower end of the bushing abuts against the limiting protrusion. A first gear is fixedly mounted on the upper end of the bushing. A first motor is fixedly mounted on the cover plate. The output shaft of the first motor extends vertically downward into the front chamber and is fixedly mounted with a second gear that meshes with the first gear. Radial stirring rods are arranged in an array on the outer circumference of the bushing.

4. The equipment for producing acrylamide according to claim 3, characterized in that, The rotating block is provided with a radial groove, and the filter plate is slidably connected to the radial groove along the radial direction of the rotating block. A first spring is provided in the radial groove to force the filter plate to extend out of the radial groove. A front inclined surface is provided between the front end of the arc-shaped groove and the rotating groove, and a rear inclined surface is provided between the rear end and the rotating groove. When the rotating block drives the filter plate to move and the filter plate abuts against the front inclined surface, the filter plate retracts into the rotating block under the action of the front inclined surface as the rotating block rotates. When the rotating block drives the filter plate to move and the filter plate abuts against the rear inclined surface, the filter plate extends out of the rotating block through the rear inclined surface under the action of the first spring as the rotating block rotates.

5. The equipment for producing acrylamide according to claim 4, characterized in that, The upper end cover has an upper large arc surface and an upper small arc surface that are coaxial with the rotating block, as well as two upper transition surfaces for connecting the upper large arc surface and the upper small arc surface; the filter plate has an upwardly extending upper protrusion at its proximal end. When the rotating block drives the filter plate to the discharge port, the upper protrusion abuts against the upper small arc surface. When the rotating block drives the filter plate away from the discharge port, the upper protrusion moves away from the upper small arc surface. When the filter plate moves to the arc-shaped groove, the upper protrusion abuts against the upper large arc surface.

6. The equipment for producing acrylamide according to claim 5, characterized in that, The pusher plate is slidably connected in the radial groove and arranged side by side with the filter plate. The radial groove is provided with a second spring for forcing the pusher plate to extend out of the radial groove. The lower end cover is provided with a lower large arc surface and a lower small arc surface coaxial with the rotating block, as well as a lower transition surface and a lower second transition surface for connecting the lower large arc surface and the lower small arc surface. The proximal end of the pusher plate is provided with a downwardly extending lower protrusion. When the rotating block drives the filter plate away from the discharge port, the lower protrusion abuts against the lower small arc surface after passing the lower second transition surface, and the pusher plate retracts into the radial groove. The pusher plate and the filter plate form a storage trough at the distal end of the radial groove. When the rotating block drives the pusher plate to the discharge port, the lower protrusion abuts against the lower large arc surface after passing the lower transition surface under the action of the second spring. The arc surface at the end of the pusher plate is coplanar with the circumferential side surface of the rotating block, and the pusher plate pushes the impurities in the storage trough into the discharge port.

7. A method of operating the apparatus for producing acrylamide as described in claim 6, characterized in that, The process includes the following steps: First, the raw materials are fed into the front chamber through the feeding port, and the stirring assembly is controlled to stir the raw materials in the front chamber for a set time; then, the stirring assembly is stopped and left to stand for a set time to form fermentation liquid; next, the stirring assembly is controlled to work, and the liquid pump is started to draw the fermentation liquid through the vertical suction pipe and send it into the filtration device. After being filtered by the filtration device, the fermentation liquid is discharged into the rear chamber; when the filtered fermentation liquid needs to be collected, simply open the stopcock; when the filtration device is working, the reduction motor drives the third gear to rotate, and the rotation of the third gear drives the fourth gear to rotate, and the fourth gear drives the rotating block to rotate at a speed of one revolution per minute through the cam shaft; the fermentation liquid drawn by the liquid pump is pumped into the inlet hole. Since six filtration assemblies are set on the outer circumference of the rotating block, at least one filtration assembly is located in the arc-shaped groove and between the inlet hole and the outlet hole when the rotating block rotates; as the fermentation liquid... After entering the arc-shaped groove through the inlet hole, the filter plate inside the arc-shaped groove abuts against the inner arc surface of the arc-shaped groove under the action of the first spring, causing the fermentation liquid to pass through the filter plate in the filtration assembly and flow out through the outlet hole. As the fermentation liquid passes through the filter plate, impurities in the fermentation liquid are filtered out on the filter plate. When the rotating block drives the filter plate away from the arc-shaped groove, the filter plate retracts into the radial slide groove after passing the previous inclined surface and compresses the first spring. At this time, the filter plate moves relative to the pusher plate, and the impurities filtered out on the filter plate enter the storage tank under the scraping action of the pusher plate. As the rotating block drives the filter plate and the pusher plate to the outlet, the upper protrusion abuts against the upper small arc surface. At this time, the filter plate is kept in the position of retracting into the radial slide groove. At the same time, the lower protrusion abuts against the lower large arc surface after passing the next transition surface under the action of the second spring. The arc surface at the end of the pusher plate is coplanar with the circumferential side surface of the rotating block. The pusher plate pushes the impurities in the storage tank into the outlet.

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