Crushing and sieving device for papermaking retention aid

Abstract

The utility model discloses a crushing and sieving device for a papermaking retention aid, and relates to the technical field of papermaking. The device comprises a crushing box and a screening box, a lower grinding disc is fixed at the lower end in the crushing box, and an upper grinding disc is arranged at the upper end in the crushing box; the upper grinding disc is fixed to an output shaft of a first motor, the first motor is fixed in a motor frame, the motor frame is fixed to the end of a piston rod of a first air cylinder, and the first air cylinder is fixed to the top of the smashing box. A stirring assembly and a heat dissipation assembly are integrated on the upper grinding disc. Through the arrangement of the stirring assembly and the heat dissipation assembly, the grinding and crushing effects of the upper grinding disc can be greatly improved, the temperature of a retention aid in the grinding process can be reduced, the retention aid is prevented from deteriorating or reducing the efficiency due to overheating, and the problems that an existing crushing and screening device is poor in grinding effect, materials are prone to being accumulated and the like are solved. Meanwhile, heat generated in the grinding process can generate adverse effects on the retention aid.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking, in particular to a pulverizing and screening device for a papermaking retention aid. Background Art

[0002] Papermaking retention aid is an important chemical used in the papermaking industry. It is mainly used to solve the problem of different filtration speeds of pulp suspension on the network during the papermaking process to improve the output and quality of paper. Its main function is to change the surface properties and fluidity of the medium and promote the improvement of filtration speed and filtration effect. Specifically, retention aid can increase the water retention capacity of paper, avoid water loss and peeling of the paper surface; improve the uniformity of paper, make the fibers evenly distributed in the paper, and prevent the paper from having problems such as uneven size, roughness or density; at the same time, it can also improve the strength and transparency of paper, making the paper more delicate and the printing effect more outstanding.

[0003] After searching, announcement number CN219441940U, announcement date 2023-08-01 discloses a filter aid and retention agent particle grinding and crushing device, which relates to the filter aid and retention agent production technology field, including a grinding cylinder and a crushing box, the top of the grinding cylinder is fixedly provided with a cylinder cover, the middle part of the cylinder cover is slidably connected with a feed pipe, the bottom end of the feed pipe is fixedly provided with a material guide cover, the middle part of the bottom end of the grinding cylinder is rotatably connected with a rotating shaft, the top of the rotating shaft is fixedly provided with a grinding seat, one side of the grinding cylinder is fixedly provided with a mounting frame, the crushing box is fixedly arranged at one end of the mounting frame, a pre-crushing assembly is arranged inside the crushing box, a discharge pipe is fixedly arranged at the bottom end of the crushing box, and an adjustment assembly is arranged on the other side of the grinding cylinder. The beneficial effects of the utility model are: the rotating motor is arranged to facilitate the grinding seat to rotate, the filter aid and retention agent particles can be ground by utilizing the mutual cooperation between the material guide cover and the grinding seat, and the position of the material guide cover is conveniently adjusted by the adjustment assembly, so as to adjust the grinding accuracy.

[0004] The patent has the following deficiencies:

[0005] 1. The grinding and crushing device uses a material guide cover and a grinding seat to grind the retention agent. It is difficult to achieve the required particle size of the retention agent by simply relying on a short-term grinding process. In addition, the retention agent is easy to accumulate during grinding, affecting the grinding effect.

[0006] 2. The grinding and crushing device will generate heat during grinding. Excessive heat accumulation will have an adverse effect on the quality of the grinding equipment and retention aids. The retention aids may deteriorate or reduce their efficiency due to overheating.

[0007] To this end, we provide a pulverizing and screening device for papermaking retention aids to solve the above-mentioned problems. Utility Model Content

[0008] The utility model aims to provide a pulverizing and screening device for a papermaking retention aid. By arranging a stirring component and a heat dissipation component, the grinding and pulverizing effect of the upper grinding disc can be greatly improved, and the temperature of the retention aid during the grinding process can be reduced to prevent the retention aid from deteriorating or reducing its efficiency due to overheating, thereby solving the problems of poor grinding effect of the existing pulverizing and screening device, easy accumulation of materials, and adverse effects of heat generated during the grinding process on the retention aid.

[0009] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0010] The utility model discloses a pulverizing and screening device for a papermaking retention aid, comprising a pulverizing box and a screening box; a lower grinding disc is fixed at the lower end of the inner part of the pulverizing box, and an upper grinding disc is arranged at the upper end of the inner part; the upper grinding disc is fixed on the output shaft of a first motor, the first motor is fixed in a motor frame, the motor frame is fixed on the end of the piston rod of a first cylinder, and the first cylinder is fixed on the top of the pulverizing box; a stirring component and a heat dissipation component are integrated on the upper grinding disc, the stirring component is used for turning over the retention aid in the lower grinding disc, and the heat dissipation component is used for reducing the temperature of the retention aid in the lower grinding disc; a filter cartridge is arranged inside the screening box.

[0011] The utility model is further configured as follows: the lower grinding disc includes a ring body and a movable chassis body arranged at the bottom of the ring body; the ring body is fixed inside the crushing box, and the ring body and the movable chassis body are loosely matched; a weighing platform is fixed to the bottom of the movable chassis body, the weighing platform is fixedly connected to one end of the connecting frame, the other end of the connecting frame is fixedly connected to the piston rod end of the second cylinder, and the second cylinder is fixed on the outer surface of the crushing box.

[0012] The utility model is further configured that a through hole is provided on the side of the crushing box for the movable chassis body to pass through.

[0013] The utility model is further configured that the upper grinding disc is provided with a plurality of through holes evenly distributed along the circumference.

[0014] The utility model is further configured as follows: the stirring assembly includes a stirring column, a connecting rod, a cross-shaped plate and an electric push rod; a plurality of stirring columns are provided, which are respectively arranged in the corresponding through holes and cooperate with the through hole gaps; the connecting rods are fixed to the tops of the plurality of stirring columns, the plurality of connecting rods are fixed to the bottoms of the cross-shaped plate, and the cross-shaped plate is fixed to the movable rod end of the electric push rod; the diameter of the connecting rod is smaller than the diameter of the through hole.

[0015] The utility model is further configured that the heat dissipation component includes a cover body; the cover body is fixed on the top of the upper grinding disc, and the top of the cover body is connected to a heat dissipation pipe; the electric push rod is fixed on the top of the cover body.

[0016] The utility model is further configured such that a rotating rod is fixed at the center of the filter cartridge, the bottom end of the rotating rod passes through the bottom plate of the filter cartridge and is fixedly connected to the output shaft of the second motor, and the second motor is fixed to the bottom of the screening box; a feed pipe is also provided on the bottom plate of the filter cartridge.

[0017] The utility model is further configured as follows: a plurality of circular plates distributed at equal intervals are fixedly sleeved on the rotating rod; a plurality of second lower hoppers distributed at equal intervals are fixed on the inner wall of the filter cartridge, the plurality of second lower hoppers are staggered with the plurality of circular plates, and the lower end outlet of the second lower hopper extends to the center of the circular plate.

[0018] The utility model is further configured that a first lower hopper is arranged above the filter cartridge, and the first lower hopper is fixed on the inner wall of the screening box; the lower end outlet of the first lower hopper extends to the center of the uppermost circular plate.

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

[0020] 1. The utility model greatly improves the grinding and crushing effect of the upper grinding disc by arranging a stirring component and a heat dissipation component. During the grinding process, the retention agent is stirred in time to ensure that the retention agent can be evenly contacted with the grinding disc, thereby achieving a more uniform grinding effect. The stirring action also helps to prevent the retention agent from accumulating in the grinding area or forming an uneven particle distribution. The heat dissipation component can reduce the temperature of the retention agent during the grinding process to prevent the retention agent from deteriorating or reducing its efficiency due to overheating.

[0021] 2. The utility model greatly improves the screening effect of the filter cartridge by arranging the rotating rod, the circular plate and the second lower hopper. The retention aid can be fully dispersed by being thrown by multiple circular plates to avoid accumulation and affect the screening.

[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 1 It is a three-dimensional schematic diagram of the overall structure of a crushing and screening device for a papermaking retention aid.

[0025] Figure 2 The present invention is a schematic diagram of the structure of the lower grinding disc of a crushing and screening device for a papermaking retention aid.

[0026] Figure 3 The present invention is a schematic diagram of the structure of an upper grinding disc of a pulverizing and screening device for a papermaking retention aid.

[0027] Figure 4 The present invention is a schematic diagram of the structure of a stirring component and a heat dissipation component of a crushing and screening device for a papermaking retention aid.

[0028] Figure 5 The figure is a schematic diagram of the internal structure of a filter cartridge of a crushing and screening device for a papermaking retention aid.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1-crushing box, 2-screening box, 201-first lower hopper, 3-lower grinding disc, 301-circle body, 302-movable chassis body, 303-weighing platform, 304-connecting frame, 305-second cylinder, 4-upper grinding disc, 401-first motor, 402-motor frame, 403-first cylinder, 404-through hole, 5-stirring assembly, 501-stirring column, 502-connecting rod, 503-cross plate, 504-electric push rod, 6-heat dissipation assembly, 601-cover body, 602-heat dissipation pipe, 7-filter cartridge, 701-rotating rod, 702-second motor, 703-circular plate, 704-second lower hopper, 705-lowering pipe. DETAILED DESCRIPTION

[0031] 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

[0032] See also Figure 1-3 The utility model is a pulverizing and screening device for a papermaking retention aid, comprising a pulverizing box 1 and a screening box 2; a lower grinding disc 3 is fixed to the lower end of the interior of the pulverizing box 1, and an upper grinding disc 4 is arranged at the upper end of the interior; the upper grinding disc 4 is fixed to the output shaft of a first motor 401, the first motor 401 is fixed in a motor frame 402, the motor frame 402 is fixed to the end of the piston rod of a first cylinder 403, and the first cylinder 403 is fixed to the top of the pulverizing box 1; a filter cartridge 7 is arranged inside the screening box 2.

[0033] Specifically, the lower grinding disc 3 includes a ring body 301 and a movable chassis body 302 arranged at the bottom of the ring body 301; the ring body 301 is fixed inside the crushing box 1, and the ring body 301 and the movable chassis body 302 are clearance-matched; a weighing platform 303 is fixed to the bottom of the movable chassis body 302, and the weighing platform 303 is fixedly connected to one end of a connecting frame 304, and the other end of the connecting frame 304 is fixedly connected to the end of the piston rod of the second cylinder 305, and the second cylinder 305 is fixed on the outer surface of the crushing box 1.

[0034] Furthermore, a through hole is provided on the side of the crushing box 1 for the movable chassis body 302 to pass through.

[0035] The operation process of this embodiment is as follows: the retention aid to be crushed is placed in the lower grinding disc 3, the weight is accurately controlled by the weighing platform 303, and then the first motor 401 is driven to descend by the first cylinder 403, and the first motor 401 drives the upper grinding disc 4 to descend into the lower grinding disc 3, and the upper grinding disc 4 is driven to rotate by the first motor 401, thereby grinding and crushing the retention aid; after the crushing is completed, the connecting frame 304 is driven to move by the second cylinder 305, and the connecting frame 304 drives the weighing platform 303 to move, and the weighing platform 303 drives the movable chassis body 302 to move and extend out of the crushing box 1, and at this time, the retention aid in the ring body 301 immediately falls into the filter cartridge 7 below for centrifugal screening. Specific embodiment 2

[0036] See also Figure 4 On the basis of the specific embodiment 1, the upper grinding disc 4 is integrated with a stirring component 5 and a heat dissipation component 6, the stirring component 5 is used to stir the retention agent in the lower grinding disc 3, and the heat dissipation component 6 is used to reduce the temperature of the retention agent in the lower grinding disc 3.

[0037] Specifically, the stirring assembly 5 includes a stirring column 501, a connecting rod 502, a cross-shaped plate 503 and an electric push rod 504; a plurality of stirring columns 501 are provided, which are respectively arranged in corresponding through holes 404 and are gap-matched with the through holes 404, and the through holes 404 are arranged on the upper grinding disk 4; a connecting rod 502 is fixed on the top of the plurality of stirring columns 501, and the plurality of connecting rods 502 are fixed on the bottom of the cross-shaped plate 503, and the cross-shaped plate 503 is fixed on the movable rod end of the electric push rod 504; the diameter of the connecting rod 502 is smaller than the diameter of the through hole 404.

[0038] Furthermore, the heat dissipation assembly 6 includes a cover 601 ; the cover 601 is fixed on the top of the upper grinding disc 4 , and the top of the cover 601 is connected to a heat dissipation pipe 602 ; the electric push rod 504 is fixed on the top of the cover 601 .

[0039] The operation process of this embodiment is as follows: when the retention agent in the lower grinding disc 3 needs to be turned over, the upper grinding disc 4 is lifted to a suitable height, and the cross-shaped plate 503 is driven down by the electric push rod 504, and the cross-shaped plate 503 drives the connecting rod 502 and the stirring column 501 to descend until the stirring column 501 completely leaves the through hole 404, and then the upper grinding disc 4 is controlled to rotate, and the upper grinding disc 4 drives the stirring column 501 to rotate, so that the retention agent is stirred by multiple stirring columns 501 to ensure that the retention agent can be evenly contacted with the grinding disc, so as to achieve a more uniform grinding effect, and the stirring action also helps to prevent the retention agent from accumulating in the grinding area or forming an uneven particle distribution; after the stirring is completed, the temperature of the retention agent is reduced by the heat dissipation component 6 to prevent the retention agent from deteriorating or reducing its efficiency due to overheating, and the heat of the retention agent is connected to the fan through the heat dissipation pipe 602, and the heat of the retention agent enters the cover 601 through the through hole 404, and is finally discharged from the heat dissipation pipe 602. Specific embodiment three

[0040] See also Figure 5 On the basis of the specific embodiment 1 and the specific embodiment 2, a rotating rod 701 is fixed at the center of the filter cartridge 7, and the bottom end of the rotating rod 701 passes through the bottom plate of the filter cartridge 7 and is fixedly connected to the output shaft of the second motor 702, and the second motor 702 is fixed to the bottom of the screening box 2; a feed pipe 705 is also provided on the bottom plate of the filter cartridge 7.

[0041] Specifically, a plurality of equally spaced circular plates 703 are fixedly sleeved on the rotating rod 701; a plurality of equally spaced second lower hoppers 704 are fixedly mounted on the inner wall of the filter cartridge 7; the plurality of second lower hoppers 704 are staggered with the plurality of circular plates 703, and the lower end outlet of the second lower hopper 704 extends to the center of the circular plate 703.

[0042] Furthermore, a first lower hopper 201 is provided above the filter cartridge 7 , and the first lower hopper 201 is fixed on the inner wall of the screening box 2 ; the lower end outlet of the first lower hopper 201 extends to the center of the uppermost circular plate 703 .

[0043] The operation process of this embodiment is as follows: the second motor 702 drives the rotating rod 701 and the filter cartridge 7 to rotate, the rotating rod 701 drives the circular plate 703 to rotate, the filter cartridge 7 drives the second lower hopper 704 to rotate, the rotating circular plate 703 throws the retention aid on it to the inner wall of the filter cartridge 7, the small particles of retention aid are filtered out, and the large particles of retention aid fall onto the lower circular plate 703 through the second lower hopper 704, and continue to throw and throw, so that the retention aid can be fully dispersed to avoid accumulation together and affect screening, and the screening effect of the filter cartridge 7 can be greatly improved.

[0044] 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.

[0045] 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 pulverizing and screening device for a papermaking retention aid, comprising a pulverizing box (1) and a screening box (2); characterized in that: A lower grinding disc (3) is fixed to the lower end of the inner part of the pulverizing box (1), and an upper grinding disc (4) is arranged at the upper end of the inner part; The upper grinding disc (4) is fixed on the output shaft of the first motor (401), the first motor (401) is fixed in the motor frame (402), the motor frame (402) is fixed to the end of the piston rod of the first cylinder (403), and the first cylinder (403) is fixed on the top of the crushing box (1); The upper grinding disc (4) is integrated with a stirring component (5) and a heat dissipation component (6), wherein the stirring component (5) is used to stir the retention agent in the lower grinding disc (3), and the heat dissipation component (6) is used to reduce the temperature of the retention agent in the lower grinding disc (3); A filter cartridge (7) is arranged inside the screening box (2).

2. The crushing and screening device for a papermaking retention aid according to claim 1, characterized in that: The lower grinding disc (3) comprises a ring body (301) and a movable chassis body (302) arranged at the bottom of the ring body (301); The ring body (301) is fixed inside the crushing box (1), and the ring body (301) and the movable chassis body (302) are clearance-matched; A weighing platform (303) is fixed to the bottom of the movable chassis body (302); the weighing platform (303) is fixedly connected to one end of a connecting frame (304); the other end of the connecting frame (304) is fixedly connected to the end of a piston rod of a second cylinder (305); and the second cylinder (305) is fixed to the outer surface of the crushing box (1).

3. The crushing and screening device for a papermaking retention aid according to claim 2, characterized in that: A through hole is provided on the side of the crushing box (1) for the movable chassis body (302) to pass through.

4. The crushing and screening device for a papermaking retention aid according to claim 1, characterized in that: The upper grinding disc (4) is provided with a plurality of through holes (404) evenly distributed along the circumference.

5. The pulverizing and screening device for a papermaking retention aid according to claim 4, characterized in that: The stirring assembly (5) comprises a stirring column (501), a connecting rod (502), a cross-shaped plate (503) and an electric push rod (504); A plurality of stirring columns (501) are provided, each of which is disposed in a corresponding through hole (404) and is clearance-matched with the through hole (404); The connecting rods (502) are fixed to the tops of the plurality of stirring columns (501), the plurality of connecting rods (502) are fixed to the bottoms of the cross-shaped plates (503), and the cross-shaped plates (503) are fixed to the ends of the movable rods of the electric push rods (504); The diameter of the connecting rod (502) is smaller than the diameter of the through hole (404).

6. The pulverizing and screening device for a papermaking retention aid according to claim 5, characterized in that: The heat dissipation component (6) comprises a cover body (601); The cover body (601) is fixed on the top of the upper grinding disc (4), and the top of the cover body (601) is connected to a heat dissipation pipe (602); The electric push rod (504) is fixed on the top of the cover body (601).

7. The pulverizing and screening device for a papermaking retention aid according to claim 1, characterized in that: A rotating rod (701) is fixed at the center of the filter cartridge (7), the bottom end of the rotating rod (701) passes through the bottom plate of the filter cartridge (7) and is fixedly connected to the output shaft of the second motor (702), and the second motor (702) is fixed to the bottom of the screening box (2); A feed pipe (705) is also provided on the bottom plate of the filter cartridge (7).

8. The pulverizing and screening device for a papermaking retention aid according to claim 7, characterized in that: A plurality of circular plates (703) distributed at equal intervals are fixedly sleeved on the rotating rod (701); A plurality of second lower hoppers (704) distributed at equal intervals are fixed on the inner wall of the filter cartridge (7); the plurality of second lower hoppers (704) and the plurality of circular plates (703) are distributed in an alternating manner, and the lower end outlet of the second lower hopper (704) extends to the center of the circular plate (703).

9. The pulverizing and screening device for a papermaking retention aid according to claim 8, characterized in that: A first lower hopper (201) is provided above the filter cartridge (7), and the first lower hopper (201) is fixed on the inner wall of the screening box (2); The lower end outlet of the first lower hopper (201) extends to the center of the uppermost circular plate (703).

Images