Membrane filtration device for polyacrylamide dry powder thickening agent

Abstract

The utility model discloses a membrane filtration device for a polyacrylamide dry powder thickening agent, and relates to the technical field of papermaking additive production equipment. The device comprises a base and a rack mounted in the center of the upper surface of the base, buffer mechanisms are uniformly arranged on the outer walls of the two sides of the rack from front to back at intervals, filter cartridges are mounted in the buffer mechanisms, cleaning assemblies are arranged at the tops of the filter cartridges, and discharging assemblies are arranged at the bottoms of the filter cartridges. According to the utility model, the outer walls of the inner filter membrane and the outer filter membrane can be respectively cleaned through the cleaning assembly, so that the influence on the subsequent filtering efficiency and effect due to the adhesion of a large amount of materials on the outer walls of the inner filter membrane and the outer filter membrane is avoided, the replacement workload of workers is reduced, the service life is prolonged, and the filter membrane waste is reduced; materials at the inner bottom of the filter cartridge can be conveniently discharged by utilizing the discharging assembly, and meanwhile, the materials between the inner filter membrane and the outer filter membrane can be treated, so that the resource waste is reduced, and the filtering efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking auxiliary agent production equipment, in particular to a membrane filtering device for a polyacrylamide dry powder thickener. Background Art

[0002] With the development of society and technology, equipment in various fields has been greatly improved. Polyacrylamide is a linear high molecular polymer. It and its derivatives can be used as effective flocculants, thickeners, paper strengtheners, etc., making it one of the important additives in the papermaking industry. In the production process, it needs to go through multiple processes such as batching, polymerization, shredding and granulation, drying, crushing and screening, packaging, and inspection. In addition, it is necessary to use membrane filtration devices to filter out internal impurities in the polyacrylamide production process to ensure product quality.

[0003] After searching, the publication number CN218358482U, application date 2022.10.31 discloses a membrane filtration device for betaine production, including a frame, two rows of membrane filters are arranged on both sides of the frame, the feed end, permeate end and discharge end of all membrane filters are respectively connected by a feed pipe, a permeate pipe and a discharge pipe, a clamp is provided on the membrane filter, and the clamp is connected to the frame, and two inner and outer filter membranes are arranged inside the membrane filter, wherein the filter aperture of the filter membrane located on the inner side is larger than the filter aperture of the filter membrane on the outer side, and a plurality of rollers are arranged at intervals front and back at the bottom of the frame, a pair of rolling rollers are arranged on the rollers, and a pair of positioners are arranged between adjacent rollers, and buffer supports are arranged on both sides of the frame, and the buffer supports include a T-shaped plate, a C-shaped hoop and a support spring.

[0004] However, it still has the following disadvantages in actual use:

[0005] The above-mentioned betaine production membrane filtration device filters the material through the filter membrane inside the membrane filter when in use. However, a large amount of material will adhere to the outer wall of the filter membrane after use, which will affect the subsequent filtration efficiency and effect. In addition, manual replacement and cleaning will increase the workload, which is inefficient and will cause waste of resources.

[0006] 2. The above-mentioned membrane filtration device for betaine production discharges the filtered material through a permeable material pipe when in use. However, the permeable material pipe is arranged on the outer wall of the membrane filter, so that the filter material at the bottom of the membrane filter and between adjacent filter membranes cannot be discharged, resulting in a waste of resources and affecting the subsequent filtration efficiency. To this end, we provide a membrane filtration device of polyacrylamide dry powder thickener to solve the above-mentioned problems. Utility Model Content

[0007] The utility model aims to provide a membrane filtration device for a polyacrylamide dry powder thickener, which can clean the outer walls of an inner filter membrane and an outer filter membrane respectively by setting a cleaning component, keep the inner filter membrane and the outer filter membrane clean, avoid a large amount of material adhering to the outer walls of the inner filter membrane and the outer filter membrane, and affect the subsequent filtering efficiency and effect, while reducing the workload of staff for replacement, increasing the service life, reducing the waste of the filter membrane, and utilizing the discharge component to facilitate the discharge of the material at the bottom of the filter cylinder, and at the same time, can process the material between the inner filter membrane and the outer filter membrane, reduce resource waste, and improve the filtering efficiency.

[0008] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0009] The utility model is a membrane filtration device for a polyacrylamide dry powder thickener, comprising a base and a frame installed at the center of the upper surface thereof, buffer mechanisms are evenly spaced from front to back on the outer walls of both sides of the frame, a filter cartridge is installed inside the buffer mechanism, a cleaning assembly is provided on the top of the filter cartridge, and a discharge assembly is provided at the bottom of the filter cartridge;

[0010] The cleaning assembly includes a motor and a driving gear disc mounted on the output shaft thereof, an outer driven gear disc is arranged on one side of the driving gear disc, and an inner driven gear disc is arranged on the inner side of the outer driven gear disc;

[0011] The discharge assembly includes an outer discharge box and an inner discharge box installed on the inner wall thereof. A discharge pipe is arranged on one side of the bottom of the outer discharge box and the inner discharge box, and the other end of the discharge pipe is connected to the permeable material pipe through a pipe joint.

[0012] The utility model is further configured that a moving mechanism is arranged at the bottom of the base, and positioning mechanisms are arranged at even intervals on both sides of the upper surface of the base from front to back.

[0013] The utility model is further configured that an inner filter membrane is arranged on the inner side of the filter cartridge, an outer filter membrane is arranged on the outer side of the inner filter membrane, and a feed pipe is arranged at the top center position of the filter cartridge.

[0014] The utility model is further configured that a discharge pipe is arranged at the bottom center of the filter cartridge, and the other end of the discharge pipe is connected to the discharge pipe through a pipe joint.

[0015] The utility model is further configured that an external threaded rod is installed in the internal threaded hole of the outer driven gear disc, and an internal threaded rod is installed in the internal threaded hole of the inner driven gear disc.

[0016] The utility model is further configured that the outer sides of the bottoms of the outer driven gear disc and the inner driven gear disc are fixedly connected with limiting rings, and the bottoms of the limiting rings are rotatably connected in the annular groove on the upper surface of the filter cartridge.

[0017] The utility model is further configured such that the bottom ends of the external threaded rod and the internal threaded rod penetrate through holes on the upper surface of the filter cartridge and are respectively connected to the upper surfaces of the outer movable ring and the inner movable ring, and cleaning brushes are provided at the center positions of the inner walls of the outer movable ring and the inner movable ring.

[0018] The utility model is further configured that the other sides of the upper surfaces of the outer moving ring and the inner moving ring are fixedly connected with guide rods, and the top ends of the external threaded rod, the internal threaded rod and the guide rod are fixedly connected with limit plates.

[0019] The utility model has the following beneficial effects:

[0020] The utility model provides a cleaning component, and the operation of the motor drives the outer moving ring and the inner moving ring to move upward or downward synchronously under the action of various components, and the cleaning brushes on the inner walls of the two can be used to clean the outer walls of the inner filter membrane and the outer filter membrane respectively, so as to keep the inner filter membrane and the outer filter membrane clean and tidy, avoid a large amount of material adhering to the outer walls of the inner filter membrane and the outer filter membrane, which affects the subsequent filtering efficiency and effect, and at the same time reduces the workload of the staff for replacement, increases the service life, and reduces the waste of the filter membrane, solves the problem that the above-mentioned membrane filter device for betaine production filters the material through the filter membrane inside the membrane filter when in use, while this method will cause a large amount of material to adhere to the outer wall of the filter membrane after use, which will affect the subsequent filtering efficiency and effect, and manual replacement and cleaning will increase the workload, low efficiency, and cause the problem of waste of resources.

[0021] The utility model provides a discharge assembly, wherein an outer discharge box and an inner discharge box are arranged at the bottom of the filter cartridge, so as to facilitate the discharge of materials at the bottom of the filter cartridge and process materials between the inner filter membrane and the outer filter membrane at the same time, thereby reducing waste of resources and improving filtering efficiency. The utility model solves the problem that the membrane filter device for betaine production discharges filtered materials through a permeable material pipe when in use, and the permeable material pipe is arranged on the outer wall of the membrane filter, so that the filter materials at the bottom of the membrane filter and between adjacent filter membranes cannot be discharged, resulting in waste of resources and affecting the subsequent filtering efficiency.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1The figure is a schematic diagram of the structure of a membrane filtration device for a polyacrylamide dry powder thickener.

[0025] Figure 2 This is a structural diagram of the filter cartridge.

[0026] Figure 3 A cross-sectional view of the filter cartridge.

[0027] Figure 4 Schematic diagram of the cleaning component structure Figure 1 .

[0028] Figure 5 Schematic diagram of the cleaning component structure Figure 2 .

[0029] Figure 6 This is a structural diagram of the nesting component.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1-base, 101-moving mechanism, 102-positioning mechanism, 103-frame, 104-buffer mechanism, 105-filter cartridge, 1051-inner filter membrane, 1052-outer filter membrane, 1053-feed pipe, 1054-discharge pipe, 106-permeable pipe, 107-discharge pipe, 2-cleaning assembly, 201-motor, 2011-driving gear disc, 203-external threaded rod, 2031-external driven gear disc, 204-internal threaded rod, 2041-inner driven gear disc, 205-limiting ring, 206-external moving ring, 207-inner moving ring, 208-cleaning brush, 209-guide rod, 2010-limiting plate, 3-discharge assembly, 301-external discharge box, 302-inner discharge box, 303-discharge pipe. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0033] See also Figures 1 to 5The utility model is a membrane filtration device for a polyacrylamide dry powder thickener, comprising a base 1 and a frame 103 installed at the center of the upper surface thereof, buffer mechanisms 104 are evenly spaced from front to back on the outer walls of both sides of the frame 103, a filter cartridge 105 is installed inside the buffer mechanism 104, and a cleaning component 2 is arranged on the top of the filter cartridge 105; the cleaning component 2 comprises a motor 201 and a driving gear disc 2011 installed on its output shaft, an outer driven gear disc 2031 is arranged on one side of the driving gear disc 2011, and an inner driven gear disc 2041 is arranged on the inner side of the outer driven gear disc 2031.

[0034] Specifically, a moving mechanism 101 is provided at the bottom of the base 1, and positioning mechanisms 102 are evenly spaced from front to back on both sides of the upper surface of the base 1, an inner filter membrane 1051 is provided on the inner side of the filter cartridge 105, and an outer filter membrane 1052 is provided on the outer side of the inner filter membrane 1051, a feed pipe 1053 is provided at the top center of the filter cartridge 105, and a discharge pipe 1054 is provided at the bottom center of the filter cartridge 105, and the other end of the discharge pipe 1054 is connected to the discharge pipe 107 through a pipe joint, an external threaded rod 203 is installed in the internal threaded hole of the outer driven gear disc 2031, an internal threaded rod 204 is installed in the internal threaded hole of the inner driven gear disc 2041, and the outer driven gear disc 2031 is provided with an internal threaded rod 204, and the outer driven gear disc 2031 is provided with an internal threaded rod 204. 031 and the bottom outer side of the inner driven gear plate 2041 are fixedly connected with the limit ring 205, the bottom of the limit ring 205 is rotatably connected in the annular groove on the upper surface of the filter cartridge 105, the bottom ends of the external threaded rod 203 and the internal threaded rod 204 pass through the through holes on the upper surface of the filter cartridge 105 and are respectively connected to the upper surfaces of the outer movable ring 206 and the inner movable ring 207, a cleaning brush 208 is provided at the center position of the inner wall of the outer movable ring 206 and the inner movable ring 207, the other side of the upper surface of the outer movable ring 206 and the inner movable ring 207 is fixedly connected with a guide rod 209, the top ends of the external threaded rod 203, the internal threaded rod 204 and the guide rod 209 are fixedly connected to the limit plate 2010.

[0035] Furthermore, the moving mechanism 101, the positioning mechanism 102, the buffer mechanism 104, etc. are all prior arts, so they will not be elaborated here. The active gear disc 2011, the outer driven gear disc 2031 and the inner driven gear disc 2041 are arranged in the horizontal direction, and are meshed and connected with each other adjacent to each other. The outer threads on the outer walls of the outer threaded rod 203 and the inner threaded rod 204 are respectively meshed and connected with the inner threads in the threaded hole walls on the end faces of the outer driven gear disc 2031 and the inner driven gear disc 2041, which plays a transmission role. The outer driven gear disc 2031 and the inner driven gear disc 2041 assist in rotation and limiting under the action of the limit ring 205. The outer moving ring 206 and the inner moving ring 207 move up and down under the action of the outer threaded rod 203 and the inner threaded rod 204. The guide rod 209 plays a guiding and auxiliary role for the outer moving ring 206 and the inner moving ring 207.

[0036] The operation process of this embodiment is as follows: after the filter cartridge 105 filters the product produced in the process of preparing the polyacrylamide dry powder thickener, the motor 201 is started, and the output shaft of the motor 201 rotates to drive the active toothed disc 2011 to rotate, and the gear on the outer wall of the active toothed disc 2011 is meshed and connected with the gear on the outer wall of the outer driven toothed disc 2031, and at the same time, the gear on the outer wall of the outer driven toothed disc 2031 is also meshed and connected with the gear on the outer wall of the inner driven toothed disc 2041, and the bottom of the outer driven toothed disc 2031 and the inner driven toothed disc 2041 are limited and assisted in rotation by the limit ring 205, so that when the active toothed disc 2011 rotates, it will drive the outer driven toothed disc 2031 and the inner driven toothed disc 2041 to rotate synchronously, and the internal threads in the internal threaded hole walls of the outer driven toothed disc 2031 and the inner driven toothed disc 2041 are respectively connected with the external threads. The external threads on the outer walls of the rod 203 and the internally threaded rod 204 are meshed and connected, so when the external driven gear disc 2031 and the internal driven gear disc 2041 rotate synchronously, the externally threaded rod 203 and the internally threaded rod 204 will be driven to make synchronous upward or downward movements, and then, with the assistance of the guide rod 209, the outer movable ring 206 and the inner movable ring 207 inside the filter cartridge 105 can make synchronous upward or downward movements, and the cleaning brush 208 on the inner walls of both can clean the outer walls of the inner filter membrane 1051 and the outer filter membrane 1052 respectively, so as to keep the inner filter membrane 1051 and the outer filter membrane 1052 clean, avoid a large amount of material adhering to the outer walls of the inner filter membrane 1051 and the outer filter membrane 1052, which will affect the subsequent filtering efficiency and effect, and at the same time reduce the workload of the staff for replacement, increase the service life, and reduce the waste of the filter membrane. Specific embodiment 2

[0037] See also Figure 3 , 6 On the basis of the specific embodiment 1, what is different from the first embodiment is that: a discharge component 3 is provided, the discharge component 3 includes an outer discharge box 301 and an inner discharge box 302 installed on the inner wall thereof, and a discharge pipe 303 is provided on one side of the bottom of the outer discharge box 301 and the inner discharge box 302, and the other end of the discharge pipe 303 is connected to the permeate pipe 106 through a pipe joint, which solves the problem that the existing permeate pipe is set on the outer wall of the membrane filter, so that the filter material located at the bottom of the membrane filter and between adjacent filter membranes cannot be discharged, resulting in waste of resources and affecting the subsequent filtration efficiency.

[0038] Furthermore, the outer material box 301 and the inner material box 302 can collect materials that pass through the inner filter membrane 1051 and the outer filter membrane 1052 respectively, and the pipe joint plays the role of pipeline connection.

[0039] The operation process of this embodiment is as follows: the entire device is moved to a suitable position under the action of the moving mechanism 101, and then the positioning mechanism 102 is used to limit the device, and then the product produced during the preparation of the polyacrylamide dry powder thickener is added to the filter cartridge 105 through the external pipeline and the feed pipe 1053. After the material enters the filter cartridge 105, it is filtered by the double-layer inner filter membrane 1051 and the outer filter membrane 1052 inside it, and the material passing through the inner filter membrane 1051 and the outer filter membrane 1052 will fall from the bottom of the filter cartridge 105 into the inner discharge box 302 and the outer discharge box 301 respectively, and then the material is discharged through the permeation pipe 106 through the discharge pipe 303, so that the material between the inner filter membrane 1051 and the outer filter membrane 1052 can be processed, thereby reducing resource waste and improving filtration efficiency, and the material that has not passed through will be discharged from the discharge pipe 1054 and the discharge pipe 107.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A membrane filtration device for a polyacrylamide dry powder thickener, comprising a base (1) and a frame (103) mounted at the center of the upper surface thereof, wherein buffer mechanisms (104) are evenly spaced from front to back on the outer walls of both sides of the frame (103), and a filter cartridge (105) is installed inside the buffer mechanism (104), characterized in that: A cleaning assembly (2) is provided at the top of the filter cartridge (105), and a discharge assembly (3) is provided at the bottom of the filter cartridge (105); The cleaning assembly (2) comprises a motor (201) and a driving gear disc (2011) mounted on the output shaft thereof, an outer driven gear disc (2031) being arranged on one side of the driving gear disc (2011), and an inner driven gear disc (2041) being arranged on the inner side of the outer driven gear disc (2031); The discharge assembly (3) comprises an outer discharge box (301) and an inner discharge box (302) mounted on the inner wall thereof, and a discharge pipe (303) is provided on one side of the bottom of each of the outer discharge box (301) and the inner discharge box (302), and the other end of the discharge pipe (303) is connected to the permeable material pipe (106) via a pipe joint.

2. A membrane filtration device for polyacrylamide dry powder thickener according to claim 1, characterized in that: A moving mechanism (101) is provided at the bottom of the base (1), and positioning mechanisms (102) are evenly spaced from front to back on both sides of the upper surface of the base (1).

3. A membrane filtration device for polyacrylamide dry powder thickener according to claim 2, characterized in that: An inner filter membrane (1051) is arranged on the inner side of the filter cartridge (105), an outer filter membrane (1052) is arranged on the outer side of the inner filter membrane (1051), and a feed pipe (1053) is arranged at the top center position of the filter cartridge (105).

4. The membrane filtration device of the polyacrylamide dry powder thickener according to claim 3, characterized in that: A discharge pipe (1054) is provided at the center of the bottom of the filter cartridge (105), and the other end of the discharge pipe (1054) is connected to the discharge pipe (107) via a pipe joint.

5. The membrane filtration device of the polyacrylamide dry powder thickener according to claim 1, characterized in that: An external threaded rod (203) is installed in the internal threaded hole of the external driven gear disc (2031), and an internal threaded rod (204) is installed in the internal threaded hole of the internal driven gear disc (2041).

6. A membrane filtration device for polyacrylamide dry powder thickener according to claim 5, characterized in that: The outer sides of the bottoms of the outer driven gear disc (2031) and the inner driven gear disc (2041) are both fixedly connected to a limiting ring (205), and the bottom of the limiting ring (205) is rotatably connected to an annular groove on the upper surface of the filter cartridge (105).

7. A membrane filtration device for polyacrylamide dry powder thickener according to claim 6, characterized in that: The bottom ends of the externally threaded rod (203) and the internally threaded rod (204) penetrate through holes on the upper surface of the filter cartridge (105) and are respectively connected to the upper surfaces of the outer movable ring (206) and the inner movable ring (207); a cleaning brush (208) is provided at the center of the inner wall of the outer movable ring (206) and the inner movable ring (207).

8. The membrane filtration device of the polyacrylamide dry powder thickener according to claim 7, characterized in that: A guide rod (209) is fixedly connected to the other side of the upper surface of the outer moving ring (206) and the inner moving ring (207), and the top ends of the outer threaded rod (203), the inner threaded rod (204) and the guide rod (209) are fixedly connected to a limiting plate (2010).

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