Box type drying device for polyacrylamide production

Abstract

The utility model discloses a box-type drying device for polyacrylamide production, which comprises a shell, a hot air pipe is arranged at the top end in the shell, a hot air blower is arranged at the top end of the hot air pipe, a base is arranged below the hot air pipe, and the base is used for transferring materials and controlling discharging; a driving assembly and a sliding assembly are arranged in the hot air pipe, the sliding assembly comprises a moving shaft and a limiting groove, the moving shaft is slidably connected into the limiting groove, the driving assembly is used for driving the moving shaft to reciprocate, and a limiting block is arranged on one side of the inner wall of the bottom end of the limiting groove; a stirring assembly is arranged in the shell and comprises a stirring net, second connecting pieces are arranged on one side of the stirring net, the second connecting pieces are rotationally connected with the moving shaft, the second connecting pieces are located on the two sides of a limiting block respectively, and the limiting block is used for guiding movement of the stirring assembly; a stirring block is arranged on the stirring net and is used for stirring materials. According to the drying equipment, during operation, caking of materials can be crushed while drying is conducted, the materials are turned over, and the drying uniformity and sufficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production equipment, in particular to a box-type drying device for polyacrylamide production. Background Technique

[0002] Polyacrylamide is an important compound, commonly used as a sewage treatment agent, soil conditioner, and oil recovery aid, etc. It is in the form of white or light yellow powder in its natural state, with strong water solubility, and must be dried during production.

[0003] In industrial production, the commonly used polyacrylamide drying equipment is a fluidized bed dryer, which promotes the contact between gas and solid particles by agitating solid particles or accelerating the gas, so as to realize the drying of solid particles. Polyacrylamide is a powder with very small particle size and is very easy to agglomerate. However, the existing drying equipment usually does not have a crushing function. If polyacrylamide agglomerates, it cannot be dried evenly and sufficiently.

[0004] After retrieval, the Chinese utility model patent with the publication number of CN220567643U discloses a fluidized bed dryer for polyacrylamide production, including a support mechanism and a filtration and drying mechanism. The filtration and drying mechanism includes a drying device, and a filtration rack is fixedly connected to the upper surface of the drying device. A first filter screen and a second filter screen are respectively slidably connected inside the filtration rack. This application filters and extrudes polyacrylamide with different volume sizes through an extrusion plate, a first filter screen, and a second filter screen. However, the extrusion plate, the first filter screen, and the second filter screen of this application are all arranged above the drying device, that is, polyacrylamide can only be filtered and extruded before drying. However, during the drying process of polyacrylamide, it will also agglomerate, and it cannot be extruded and filtered during the drying process, and still cannot be dried evenly and sufficiently. Content of the Utility Model

[0005] Aiming at the above-mentioned prior art, the utility model aims to provide a box-type drying device for polyacrylamide production, and the main technical problem to be solved is how to improve the uniformity and sufficiency of polyacrylamide drying.

[0006] To achieve the above object, the technical solution of the embodiment of the present utility model is realized as follows: A box-type drying device for polyacrylamide production includes a housing. At the top end inside the housing, there is a hot air pipe. At the top end of the hot air pipe, there is a hot air blower. Below the hot air pipe, there is a base which is used for transferring materials and controlling the discharge. Inside the hot air pipe, there are a driving component and a sliding component. The sliding component includes a moving shaft and a limiting groove. The moving shaft is slidably connected inside the limiting groove. The driving component is used to drive the moving shaft to reciprocate. On one side of the inner wall at the bottom end of the limiting groove, there is a limiting block. Inside the housing, there is a stirring component which includes a stirring net. On one side of the stirring net, there is a connecting piece two which is rotatably connected to the moving shaft. The connecting piece two is located on both sides of the limiting block respectively. The limiting block is used for guiding the movement of the stirring component. On the stirring net, there are stirring blocks which are used for turning over the materials.

[0007] Further, at the bottom end of the hot air pipe, there is a lifting bolt. The base is in a funnel shape. In the middle of the base, there is a discharge port. The base includes a conical main body and a cylindrical lifting cylinder. The lifting cylinder is screwed outside the lifting bolt.

[0008] Further, a rubber ring is sleeved outside the upper end of the lifting bolt. The external thread of the lifting bolt is arranged on the outer periphery of the lower end. The internal thread of the lifting cylinder is arranged on the inner side of the upper end.

[0009] Further, at the bottom inside the dryer main body, there is a motor two. At the top end of the output shaft of the motor two, there is a gear column connected by a key. On the outer periphery of the lifting cylinder, there are gear teeth. The lifting cylinder is meshed with the gear column through the gear teeth.

[0010] Further, the hot air pipe is provided with strip-shaped through holes along the circumferential direction on the side wall. The connecting piece two extends out of the hot air pipe from the strip-shaped through holes.

[0011] Further, an electromagnet is provided at the upper end of the gear column. A permanent magnet is provided at the lower end of the base. The position of the electromagnet corresponds to the position of the permanent magnet up and down. At the lower end of the edge of the base, there is a limiting plate.

[0012] Further, at the top of the housing, there are a feed inlet and an exhaust port.

[0013] Further, the thickness of the lower part of the lifting cylinder is greater than that of the upper part. A flexible pipe is fixedly connected to the lower part of the lifting cylinder. The flexible pipe is fixedly connected to a discharge pipe at the lower end of the side wall of the housing.

[0014] Further, the driving component includes a turntable and a connecting piece one. The connecting piece one is rotatably connected to the edge of the upper end of the turntable. Inside the hot air pipe, there is an installation rod along the diameter direction. The turntable is rotatably connected to the upper end of the installation rod. Inside the installation rod, there is a motor one.

[0015] Further, a gasket is fixedly connected to the lower end of the rubber ring.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. Driving the stirring net to swing through the sliding component can break the caking of materials while drying during the operation of the drying equipment, avoiding caking of materials during drying and ensuring that the materials cannot be dried evenly and sufficiently. By setting the stirring block, the materials can be turned over from bottom to top along with the swing of the stirring net, preventing the materials at the bottom from not being dried and enabling materials at different depths to be dried evenly and sufficiently.

[0018] 2. The motor two can drive the base to rotate and lift. When the base rotates, the contact frequency between the stirring block and the materials can be increased, improving the turning efficiency of the stirring block and thus enhancing the drying efficiency. When the base lifts, the discharge port can be opened or closed, facilitating discharging.

[0019] 3. By setting the gasket, the rubber ring is protected from friction by the base, reducing the loss of the rubber ring and extending its service life. Description of the Drawings

[0020] Figure 1 It is the front view of a box - type drying device for polyacrylamide production in Embodiment 1 of the present application;

[0021] Figure 2 It is the three - dimensional view of the hot air pipe of a box - type drying device for polyacrylamide production in Embodiment 1 of the present application;

[0022] Figure 3 It is the front sectional view of a box - type drying device for polyacrylamide production in Embodiment 1 of the present application;

[0023] Figure 4 It is Figure 3 the enlarged view of part A in

[0024] Figure 5 It is the partial sectional view of the hot air pipe of a box - type drying device for polyacrylamide production in Embodiment 1 of the present application;

[0025] Figure 6 It is the front view of the drive component of a box - type drying device for polyacrylamide production in Embodiment 1 of the present application.

[0026] Figure 7 It is the three - dimensional view of the sliding component of a box - type drying device for polyacrylamide production in Embodiment 1 of the present application.

[0027] Figure 8 It is the sectional view of the limit groove of a box - type drying device for polyacrylamide production in Embodiment 1 of the present application.

[0028] Figure 9 It is the top view of the gear column and the lifting cylinder of a box - type drying device for polyacrylamide production in Embodiment 1 of the present application.

[0029] Figure 10 This is a partially enlarged view of a box-type drying device for polyacrylamide production in Embodiment 2 of this application.

[0030] Explanation of the reference numerals in the attached drawings: 1 housing, 2 discharge pipe, 5 hot air pipe, 6 stirring mesh, 9 mounting rod, 10 turntable, 11 connecting piece one, 12 connecting piece two, 13 moving shaft, 14 base, 15 rubber ring, 18 gear column, 19 limiting groove, 20 stirring block, 21 gasket, 22 permanent magnet, 23 electromagnet, 24 limiting block, 25 lifting bolt, 26 lifting cylinder, 27 hot air blower, 28 flexible pipe, 29 limiting plate, 31 motor one, 32 motor two, 33 filter screen. Detailed implementation manners

[0031] The technical solution of the present utility model will be further elaborated in detail below in conjunction with the accompanying drawings of the specification and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. In the following description, the expression "some embodiments" describes a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0032] It should be further noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "inner", "outer", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0033] Embodiment 1

[0034] Refer to the attached Figures 1-9, this application provides a box-type drying device for polyacrylamide production, including a housing 1. The housing 1 is set to be cylindrical. At the top inside the housing 1, there is a hot air pipe 5. A plurality of ventilation openings are provided on the side wall of the hot air pipe 5. The top of the hot air pipe 5 is arranged in the center of the housing 1. A hot air blower 27 is provided at the top of the hot air pipe 5. A base 14 is provided below the hot air pipe 5. The bottom end of the hot air pipe 5 is arranged in the center of the base 14. The base 14 is used for transferring materials and controlling the discharge of materials. A driving component and a sliding component are provided inside the hot air pipe 5. The driving component is used to drive the sliding component to make reciprocating motions, and the sliding component is used to drive the stirring component to swing. The sliding component includes a moving shaft 13 and a limiting groove 19. The moving shaft 13 is slidably connected inside the limiting groove 19. The driving component is used to drive the moving shaft 13 to move back and forth. A limiting block 24 is provided on one side of the bottom inner wall of the limiting groove 19. The limiting block 24 is set as a triangular prism with an isosceles triangle bottom surface. The inclined surface of the limiting block 24 faces the limiting groove 19. A stirring component is provided inside the housing 1. The stirring component includes a stirring net 6. A second connecting piece 12 is provided on one side of the stirring net 6. The second connecting piece 12 is rotatably connected to the moving shaft 13. The second connecting pieces 12 are respectively located on both sides of the limiting block 24. The limiting block 24 is used for guiding the movement of the stirring component. When the moving shaft 13 slides out of the limiting groove 19, the stirring net 6 separates to both sides. When the moving shaft 13 slides into the limiting groove 19, the stirring net 6 moves closer to the middle. There are two pairs of stirring nets 6. When the stirring nets 6 swing along with the second connecting piece 12, they can all contact the adjacent stirring net 6. When the stirring nets 6 contact each other, they can break the agglomerates of polyacrylamide. Stirring blocks 20 are provided on the stirring net 6. The stirring blocks 20 are set as triangular pyramids. The stirring blocks 20 are used for turning over the materials. When the moving shaft 13 drives the connecting piece 12 to swing, the connecting piece 12 will first move in the same direction as the moving shaft 13 for a certain distance. Therefore, the distance from the side wall of the hot air cylinder 5 to the inner wall of the housing 1 should be greater than the sum of the width of the stirring net 6 and the moving distance of the connecting piece 12.

[0035] Preferably, a lifting bolt 25 is provided at the bottom end of the hot air pipe 5. The diameter of the lifting bolt 25 is smaller than the diameter of the hot air pipe 5. The base 14 is in a funnel shape. There is a discharge port in the middle of the base 14. The base 14 includes a conical main body and a cylindrical lifting cylinder 26. The lifting cylinder 26 is screwed outside the lifting bolt 25. The base 14 can be lifted relative to the hot air pipe 5. When the base 14 descends until the lifting bolt 25 completely disengages from the lifting cylinder 26, the discharge port opens. When the base 14 rises until the lifting bolt 25 is tightly connected to the lifting cylinder 26, the discharge port closes.

[0036] Preferably, a rubber ring 15 is sleeved outside the upper end of the lifting bolt 25. The rubber ring 15 can improve the tightness of the connection between the hot air duct 5 and the base 14. The external thread of the lifting bolt 25 is arranged on the outer periphery of the lower end, and the internal thread of the lifting cylinder 26 is arranged on the inner side of the upper end. The distance between the external thread of the lifting bolt 25 and the rubber ring 15 is less than the height of the internal thread of the lifting cylinder 26. When the lifting bolt 25 is tightly connected to the lifting cylinder 26, the external thread of the lifting bolt 25 is located below the internal thread of the lifting cylinder 26, the internal thread of the lifting cylinder 26 is located between the external thread of the lifting bolt 25 and the rubber ring 15, and the rubber ring 15 is deformed by the extrusion of the hot air duct 5 and the base 14, and can give a downward driving force to the base 14.

[0037] Preferably, a second motor 32 is provided at the bottom inside the housing 1. The top of the output shaft of the second motor 32 is key-connected with a gear column 18. The outer periphery of the lifting cylinder 26 is provided with teeth, and the lifting cylinder 26 is meshed with the gear column 18 through the teeth. The second motor 32 drives the gear column 18 to rotate, which can drive the lifting cylinder 26 to rotate, so that the base 14 rises or falls along the lifting bolt 25. When the base 14 rises to the position where the internal thread of the lifting cylinder 26 is above the external thread of the lifting bolt 25, the base 14 is tightly connected to the hot air duct, the rubber ring 15 is squeezed, the second motor 32 drives the gear column 18 to continue to rotate, the base 14 stops rising, and rotates relatively below the hot air duct 5. Since the base 14 is tightly connected to the hot air duct 5 and the rubber ring 15 gives a downward driving force to the base 14, when the second motor 32 drives the gear column 18 to rotate in the reverse direction, the internal thread of the lifting cylinder 26 can be engaged with the external thread of the lifting bolt 25 again, and the base 14 can move downward along the lifting bolt 26.

[0038] Preferably, the hot air duct 5 is provided with strip-shaped through holes in the circumferential direction on the side wall, and the second connecting piece 12 extends out of the hot air duct 5 from the strip-shaped through holes. The second connecting piece 12 moves back and forth or swings left and right in the strip-shaped through holes.

[0039] Preferably, an electromagnet 23 is provided at the upper end of the gear column 18, and a permanent magnet 22 is provided at the lower end of the base 14. The position of the electromagnet 23 corresponds to the position of the permanent magnet 22 up and down. The electromagnet 23 is controlled by an H-bridge circuit. When the base 14 needs to rise, by adjusting the current direction, the magnetic pole at the top of the electromagnet 23 is made the same as the magnetic pole at the lower end of the permanent magnet 22. When the base 14 needs to fall, by adjusting the current direction, the magnetic pole at the top of the electromagnet 23 is made opposite to the magnetic pole at the lower end of the permanent magnet 22, ensuring that when the base 14 falls, the permanent magnet 22 can just fall above the electromagnet 23. When the second motor 32 operates, the electromagnet 23 can give an upward driving force to the base 14. Therefore, the base 14 can rise to contact with the lifting cylinder 26 and the lifting bolt 25. A limiting plate 29 is provided at the lower end of the edge of the base 14. The limiting plate 29 is annular, which can ensure that the base 14 can run smoothly when rotating or lifting and will not tip over to one side.

[0040] Preferably, a feed inlet and an exhaust port are provided at the top of the outer shell 1. A filter screen 33 is provided below the exhaust port, which can ensure that when water vapor is discharged, polyacrylamide is not blown into the exhaust port, causing blockage of the exhaust port or waste of materials. The feed inlet is arranged on the outer periphery of the hot air pipe 5.

[0041] Preferably, the thickness of the lower part of the lifting cylinder 26 is greater than that of the upper part. A flexible pipe is fixedly connected to the lower part of the lifting cylinder 26. The flexible pipe can be telescoped and deformed. The use of the flexible pipe can prevent the lifting cylinder 26 from being hindered when it descends or ascends. The flexible pipe is fixedly connected to the lower end of the side wall of the outer shell 1 with a discharge pipe 2. The discharge pipe 2 leads to the outside of the outer shell 1. The discharge pipe 2 is arranged with rigid materials, which can prevent damage or unsmooth discharge.

[0042] Preferably, the driving assembly includes a turntable 10 and a connecting member 11. The connecting member 11 is rotatably connected to the edge of the upper end of the turntable 10. An installation rod 9 is arranged along the diameter direction in the hot air pipe 5. The turntable 10 is rotatably connected to the upper end of the installation rod 9. A motor 31 is arranged in the installation rod 9. The motor 31 drives the turntable 10 to rotate. The rotation of the turntable 10 can drive the connecting member 11 to rotate. When the connecting member 11 rotates, it can drive the moving shaft 13 to slide in the limit groove 19.

[0043] Working principle: First, start the motor 32, drive the gear column 18 to lift the base 14 until the telescopic cylinder 26 is tightly screwed with the telescopic bolt 25. Keep the motor 32 running continuously, and the base 14 rotates relative to the hot air pipe 5. Put polyacrylamide into the outer shell 1 from the feed inlet at the top of the outer shell 1. After the feeding is completed, close the feed inlet. Start the hot air blower 27 and the motor 31, and open the exhaust port. While the hot air blower 27 outputs hot air, the water vapor in the outer shell 1 is discharged from the exhaust port. At the same time, the stirring net 6 starts to swing to stir the materials or break the lumps of the materials. After drying, first turn off the motor 32, and then start the motor 32 in reverse to drive the gear column 18 to lower the base 14 until the telescopic cylinder 26 is separated from the telescopic bolt 25. The materials start to enter the flexible pipe 28 from the discharge port, and then are discharged from the flexible pipe 28 through the discharge pipe 2 out of the outer shell 1. After all the materials are discharged, turn off the motor 31, the motor 32, and the hot air blower 27, and wait for the equipment to cool down and the water vapor in the outer shell 1 to be discharged. After the equipment cools down, close the exhaust port.

[0044] Embodiment 2

[0045] Refer to the attached Figure 10 , this application provides a box-type drying device for polyacrylamide production. Compared with Embodiment 1, in order to protect the rubber ring 15 from wear, a gasket 21 is fixedly connected to the lower end of the rubber ring 15. The shape of the gasket 21 corresponds to the shape of the base 14. The gasket 14 is frustum-shaped.

[0046] Working principle: The gasket 21 is fixedly connected to the lower end of the rubber ring 15. When the base 14 rotates relative to the hot air duct 5, the gasket 21 is in direct contact with the base 14. The gasket 21 can prevent the base 14 from causing serious deformation of the rubber ring 15 in the horizontal direction and can improve the service life of the rubber ring 15.

[0047] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A box-type drying device for polyacrylamide production, comprising a housing (1), characterized in that: A hot air pipe (5) is provided at the top of the inner part of the housing (1), a hot air blower (27) is provided at the top of the hot air pipe (5), and a base (14) is provided below the hot air pipe (5), and the base (14) is used for transferring materials and controlling the discharge of materials; A driving assembly and a sliding assembly are provided inside the hot air pipe (5), the sliding assembly comprising a moving shaft (13) and a limiting groove (19), the moving shaft (13) is slidably connected inside the limiting groove (19), the driving assembly is used to drive the moving shaft (13) to reciprocate, and a limiting block (24) is provided on one side of the inner wall of the bottom end of the limiting groove (19); A stirring assembly is arranged inside the housing (1), the stirring assembly comprising a stirring net (6), a second connecting piece (12) is arranged on one side of the stirring net (6), the second connecting piece (12) is rotatably connected to a movable shaft (13), the second connecting piece (12) is respectively located on both sides of a limit block (24), the limit block (24) is used for guiding the movement of the stirring assembly; a stirring block (20) is arranged on the stirring net (6), the stirring block (20) is used for turning the material.

2. A box-type drying device for polyacrylamide production according to claim 1, characterized in that: A lifting bolt (25) is provided at the bottom end of the hot air pipe (5); the base (14) is funnel-shaped, a discharge port is provided in the middle of the base (14), the base (14) comprises a conical main body and a cylindrical lifting cylinder (26), and the lifting cylinder (26) is screwed onto the outside of the lifting bolt (25).

3. A box-type drying device for polyacrylamide production according to claim 2, characterized in that: A rubber ring (15) is sleeved on the outer side of the upper end of the lifting bolt (25), the outer thread of the lifting bolt (25) is arranged on the outer periphery of the lower end, and the inner thread of the lifting cylinder (26) is arranged on the inner side of the upper end.

4. A box-type drying device for polyacrylamide production according to claim 2, characterized in that: A second motor (32) is arranged at the bottom of the main body of the drying machine. The top end of the output shaft of the second motor (32) is connected to a gear column (18) via a key. The outer periphery of the lifting cylinder (26) is provided with gear teeth. The lifting cylinder (26) is meshed with the gear column (18) via the gear teeth.

5. A box-type drying device for polyacrylamide production according to claim 1, characterized in that: The hot air pipe (5) has a strip-shaped through hole on its side wall along the circumferential direction, and the second connecting piece (12) extends out of the hot air pipe (5) from the strip-shaped through hole.

6. A box-type drying device for polyacrylamide production according to claim 4, characterized in that: An electromagnet (23) is provided at the upper end of the gear column (18), a permanent magnet (22) is provided at the lower end of the base (14), the position of the electromagnet (23) corresponds to the position of the permanent magnet (22) in the upper and lower parts, and a limit plate (29) is provided at the lower end of the edge of the base (14).

7. A box-type drying device for polyacrylamide production according to claim 1, characterized in that: The top of the housing (1) is provided with a feed inlet and an exhaust outlet.

8. A box-type drying device for polyacrylamide production according to claim 2, characterized in that: The thickness of the lower part of the lifting cylinder (26) is greater than that of the upper part. The lower part of the lifting cylinder (26) is fixedly connected to a flexible tube (28). The lower end of the flexible tube (28) is fixedly connected to a discharge pipe (2) at the side wall of the outer shell (1).

9. A box-type drying device for polyacrylamide production according to claim 1, characterized in that: The driving assembly comprises a turntable (10) and a connecting member (11), wherein the connecting member (11) is rotatably connected to the edge of the upper end of the turntable (10), a mounting rod (9) is provided in the hot air pipe (5) along the diameter direction, the turntable (10) is rotatably connected to the upper end of the mounting rod (9), and a motor (31) is provided in the mounting rod (9).

10. A box-type drying device for polyacrylamide production according to claim 3, characterized in that: A gasket (21) is fixedly connected to the lower end of the rubber ring (15).

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