A pulp mill with cooling function

Abstract

This utility model relates to the field of pulp refining technology and discloses a pulp refiner with a cooling function, including a refining tank and a refining assembly on the tank. The device also includes a cooling assembly mounted on the refining tank, comprising an air supply assembly and an air guide assembly. The air supply assembly is located outside the refining tank to introduce cool air from outside the tank into the air guide assembly. This utility model has the following advantages and effects: During operation, a suction fan introduces cool air from outside the refining tank into the mounting frame, and the cool air is discharged into the air guide space through a connection port. The air outlet of the air guide space matches the working area, allowing the cooling air to be directly delivered to the working area for cooling, rapidly cooling the refining disc and related working components, reducing the increased wear caused by high temperatures. Furthermore, during operation, a backflow prevention assembly prevents pulp from flowing back into the refining tank, thus avoiding the environmental pollution and waste caused by pulp backflow.

Description

Technical Field

[0001] This utility model relates to the field of pulp refining technology, and in particular to a pulp refiner with a cooling function. Background Technology

[0002] Pulp refining is a crucial step in papermaking, directly impacting paper quality and performance. During refining, the physical and papermaking properties of the pulp are optimized by altering the morphology, structure, and surface characteristics of the fibers, laying the foundation for subsequent paper production.

[0003] A Chinese patent with publication number CN217948602U discloses a pulp refiner with a cooling function, including a housing, a cooling box fixedly connected to the bottom of the housing, a condenser installed on the cooling box, a circulation pipe installed inside the cooling box, and a water pump installed inside the cooling box. This facilitates the cooling of the refined pulp, saving time and labor, and improving the paper production efficiency.

[0004] Based on the above situation, the inventor believes that during the current pulping process, the intense friction between the pulping disc and the pulp fibers converts a large amount of mechanical energy into heat energy, causing the temperature of the pulping area to rise rapidly. The pulping disc is prone to increased friction and wear at high temperatures, shortening its service life. Traditional cooling structures are also difficult to cool the pulping area quickly and accurately. Therefore, the inventor proposes a pulp refiner with a cooling function to improve the above situation. Utility Model Content

[0005] The purpose of this invention is to provide a pulp refiner with a cooling function, which can quickly and accurately cool the refining area and improve the life of components.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a pulp refiner with cooling function, including a refiner tank, on which a refiner assembly is provided;

[0007] The device also includes a cooling assembly installed on the grinding tank. The cooling assembly includes an air supply assembly and an air guide assembly. The air supply assembly is located on the outside of the grinding tank to introduce cold air from the outside of the grinding tank into the air guide assembly. The air guide assembly is installed inside the grinding tank, and the air outlet position of the air guide assembly matches the grinding operation area of ​​the grinding assembly, so that the cold air can be accurately and timely delivered to the grinding operation area to provide cooling support.

[0008] A further feature of this invention is that the grinding assembly includes a grinding disc disposed within a grinding tank, a grinding seat disposed on the outside of the grinding disc to cooperate in completing the grinding operation, and the air outlet position of the air guide assembly matches the grinding operation position of the grinding disc and the grinding seat.

[0009] By adopting the above technical solution, it is possible to facilitate the use of external cold air to provide cooling support for the grinding operation position.

[0010] A further feature of this invention is that the number of air supply components is one, two, or more, and when the number of air supply components is two or more, they are arranged in a circumferential array along the outer side of the grinding tank.

[0011] By adopting the above technical solution and increasing the number of air supply components, the amount of cold air intake can be increased.

[0012] A further feature of this invention is that the air supply assembly includes a mounting frame fixed to the outside of the grinding tank, and a suction fan is fixedly installed on the side of the mounting frame away from the grinding tank.

[0013] By adopting the above technical solution, the function of the suction fan is to quickly deliver the cold air from the outside of the grinding tank into the grinding operation area to meet the cooling needs.

[0014] A further feature of this invention is that the air guide assembly includes an air guide frame fixedly connected to the inner wall of the grinding tank.

[0015] By adopting the above technical solution, the air guide frame is circular in shape, and the top of the air guide frame is in contact with the inner wall of the grinding tank.

[0016] A further feature of this invention is that the outer side of the air guide frame is provided with a first inclined portion and a second inclined portion, and the air guide frame, the first inclined portion and the second inclined portion form an air guide space between the air outlet and the grinding operation position between them and the inner wall of the grinding tank. The air guide frame and the grinding tank are fixed by a support portion.

[0017] By adopting the above technical solution, the support part is located in the air guide space, and the connection strength between the air guide frame and the grinding tank is strengthened by the support part.

[0018] A further feature of this invention is that a connection port is provided on the outer side of the grinding tank at a position corresponding to the mounting frame, and the interior of the mounting frame is connected to the air guide space through the connection port.

[0019] By adopting the above technical solution, external cold air can be delivered into the installation frame through the suction fan.

[0020] A further feature of this invention is that the support portion is a straight rod whose two ends are fixedly connected to the grinding tank and the air guide frame, respectively.

[0021] By adopting the above technical solution, the grinding tank and the air guide frame are fixed by restraining the two ends of the straight rod, thereby improving the stability of the air guide frame installation structure.

[0022] A further feature of this invention is that the support part is an annular partition plate that is fixedly connected to the grinding tank and the air guide frame on its inner and outer sides respectively. The annular partition plate has a circular mounting port for connecting the anti-reverse assembly. The anti-reverse assembly includes a float ball with an outer diameter larger than the mounting port and coaxially fitted with the mounting port. The top of the float ball is slidably fitted with the mounting port through a sliding rod.

[0023] By adopting the above technical solution, the float is a hollow rubber ball filled with air, which allows it to float after contacting the pulp and being supported by the pulp.

[0024] A further feature of this invention is that a detector for detecting the height position of the float is provided on the air guide frame.

[0025] By adopting the above technical solution, a marker block is fixed on the outside of the slide bar, and the marker block corresponds to the detection direction of the detector.

[0026] The beneficial effects of this utility model are:

[0027] During operation, a suction fan draws cool air from outside the pulp tank into the mounting frame, and the cool air is discharged into the air guide space through the connection port. The air outlet of the air guide space is matched with the working area, so that the cooling air can be directly delivered to the working area for cooling, so as to quickly cool down the pulping disc and related working parts, reduce the increased losses caused by high temperature. In addition, during operation, a backflow prevention component can prevent pulp from flowing back out of the pulp tank, thereby improving cooling stability and avoiding the problems of workshop environmental pollution and waste caused by pulp backflow. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of a pulp refiner with cooling function provided for an embodiment of this utility model;

[0030] Figure 2 This is a schematic diagram of the internal structure of the grinding tank in an embodiment of this utility model;

[0031] Figure 3 This is a schematic diagram of the air guide assembly in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the second embodiment of the support part in this utility model.

[0033] In the diagram, 1. Pulping tank; 2. Cooling assembly; 3. Air supply assembly; 4. Air guide assembly; 11. Pulping assembly; 12. Feed inlet; 13. Discharge pipe; 14. Base; 111. Pulping disc; 112. Pulping seat; 31. Mounting frame; 32. Suction fan; 33. Connection port; 41. Air guide frame; 42. First inclined section; 43. Second inclined section; 44. Air guide space; 45. Support section; 46. Bracket; 451. Mounting port; 51. Float; 52. Slide rod; 53. Card holder; 54. Marker block; 55. Detector. Detailed Implementation

[0034] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0035] This utility model embodiment specifically provides a pulp refiner with a cooling function. Please refer to [link / reference]. Figures 1-4 It includes a grinding tank 1, on which a grinding assembly 11 is provided.

[0036] The pulping assembly 11 includes a motor fixedly mounted above the pulping tank 1. The top surface of the pulping tank 1 is provided with a feed inlet 12 for feeding pulp into the pulping tank 1. At the same time, the bottom of the pulping tank 1 is provided with a discharge pipe 13 for discharging the pulp after pulping. The outside of the pulping tank 1 is fixed to the placement area by a base 14 so that the pulping tank 1 can be placed stably for operation.

[0037] The pulping assembly 11 includes a pulping disc 111 disposed inside the pulping tank 1. The top of the pulping disc 111 is fixedly connected to the output shaft of the motor via a shaft, so that the motor drives the pulping disc 111 to rotate. A pulping seat 112 is disposed on the outside of the pulping disc 111 to complete the pulping operation. The pulping seat 112 is fixedly connected to the inner wall of the pulping tank 1. The top surface of the pulping seat 112 is an inverted conical inclined structure. The pulping disc 111 and the bottom are fixedly provided with toothed blocks that cooperate with the inclined surface. When the pulp flows along the inclined surface, it can be ground by the rotating toothed blocks, and the ground pulp can continue to be conveyed downwards and then discharged through the discharge pipe 13.

[0038] In this embodiment, the above-mentioned features are all common components and structures of existing pulp refiners. Those skilled in the art should be clear about the specific installation methods and usage processes, so they will not be described in detail here.

[0039] Furthermore, the device also includes a cooling assembly 2 disposed on the grinding tank 1. The cooling assembly 2 includes an air supply assembly 3 and an air guide assembly 4. The air supply assembly 3 is disposed on the outside of the grinding tank 1 to introduce cold air from the outside of the grinding tank 1 into the air guide assembly 4. The air guide assembly 4 is installed inside the grinding tank 1, and the air outlet position of the air guide assembly 4 matches the grinding operation area of ​​the grinding assembly 11, so that the cold air can be accurately and timely delivered to the grinding operation area to provide cooling support.

[0040] Specifically, the air outlet position of the air guide assembly 4 is matched with the grinding operation position of the grinding disc 111 and the grinding seat 112, so that external cold air can provide cooling support to the grinding operation position, reduce the operating temperature of the grinding disc 111 and the grinding seat 112, so as to protect the equipment from high temperature and improve its service life.

[0041] The number of air supply components 3 is set to one, two or more. When there are two or more air supply components 3, they are arranged in a circumferential array along the outer side of the grinding tank 1. By increasing the number of air supply components 3, the amount of cold air intake can be increased. During implementation, the number of air supply components 3 can be adjusted according to the high temperature caused by the scale of the operation to cool the high temperature reasonably without losing economy and saving energy.

[0042] Furthermore, the air supply assembly 3 includes a mounting frame 31 fixed to the outside of the grinding tank 1. A suction fan 32 is fixedly installed on the side of the mounting frame 31 away from the grinding tank 1. The function of the suction fan 32 is to quickly deliver the cold air from the outside of the grinding tank 1 into the grinding operation area to meet the cooling needs.

[0043] In practice, the air guide assembly 4 includes an air guide frame 41 that is fixedly connected to the inner wall of the grinding tank 1. The air guide frame 41 is generally circular, and the top of the air guide frame 41 is in contact with the inner wall of the grinding tank 1. The two are fixed together by bolts. During installation, a rubber gasket can be added between the inner wall of the grinding tank 1 and the air guide frame 41 to improve the sealing between the top of the air guide frame 41 and the grinding tank 1.

[0044] The air guide frame 41 is provided with a first inclined part 42 and a second inclined part 43 on its outer side. The inclination direction of the first inclined part 42 and the second inclined part 43 is from high to low, gradually tilting downwards towards the center of the air guide frame 41. This makes it convenient for the pulp to be fed downwards along the two inclined parts after it comes into contact with the air guide frame 41, and then transported to the pulping operation area.

[0045] Specifically, the air guide frame 41, the first inclined part 42 and the second inclined part 43 form an air guide space 44 between the air outlet and the inner wall of the grinding tank 1, which matches the grinding operation position. The air guide frame 41 and the grinding tank 1 are fixed by the support part 45, which is located in the air guide space 44. The support part 45 strengthens the connection between the air guide frame 41 and the grinding tank 1.

[0046] During implementation, the bottom end of the second inclined part 43 faces the direction of the grinding operation, and the second inclined part 43 as a whole can remain parallel to the upper surface of the grinding seat 112 to facilitate quick air cooling of the grinding operation position.

[0047] The grinding tank 1 has a connection port 33 on its outer side corresponding to the mounting frame 31. The interior of the mounting frame 31 is connected to the air guide space 44 through the connection port 33, so that external cold air can be sent into the interior of the mounting frame 31 by the suction fan 32. After passing through the connection port 33 and the air guide space 44, the cold air is discharged from the bottom of the air guide space 44. This allows the cold air to be directly discharged to the grinding operation position, thereby reducing the temperature of the adjacent working positions of the grinding disc 111 and the grinding seat 112, achieving the purpose of rapid cooling, thereby reducing the wear and tear of components caused by high temperature environment and improving service life.

[0048] Furthermore, as a first feasible implementation of the support part 45 in this technical solution, the support part 45 is a straight rod with both ends fixedly connected to the grinding tank 1 and the air guide frame 41 respectively. The grinding tank 1 and the air guide frame 41 are fixed by the two ends of the straight rod to improve the stability of the installation structure of the air guide frame 41.

[0049] Furthermore, as another feasible implementation of the support part 45 in this technical solution, the support part 45 is an annular partition that is fixedly connected to the grinding tank 1 and the air guide frame 41 on the inner and outer sides respectively. Since the annular partition is located in the air guide space 44, the air guide space is divided into two non-communicating areas by the annular partition.

[0050] The annular partition has a circular mounting port 451 for connecting the anti-reverse assembly. There are two or more mounting ports 451 arranged along the circumference of the annular partition. The mounting ports 451 allow the upper and lower areas of the internally separated air guide space 44 to be interconnected. In daily use, after the cold air is sent into the upper part of the air guide space 44, it can be discharged into the lower part of the air guide space 44 through the mounting ports 451 and finally discharged. Since the grinding disc 111 is rotating during operation, the air supply of the air guide space 44 can continuously contact the working position of the continuously rotating grinding disc 111, which meets the requirement of continuous cooling support for the entire working area.

[0051] In this embodiment, the purpose of setting the anti-backflow component is to provide a safety measure. Since the splashing and surging of pulp during operation is difficult to control and predict after it is discharged into the pulping tank 1, in order to prevent the pulp from flowing back into the air guide space 44 or even into the mounting frame 31, the anti-backflow component is needed to prevent the pulp from flowing back.

[0052] In implementation, the anti-reverse component includes a float 51 with an outer diameter larger than the mounting port 451 and coaxially fitted with the mounting port 451. The top of the float 51 is slidably fitted with the mounting port 451 via a sliding rod 52. The float 51 is a hollow rubber ball filled with air. After contacting the pulp, it can float up due to the buoyancy of the pulp. When the water level of the pulp rises or falls below the annular baffle, it can drive the float 51 to rise or fall synchronously, and move up and down in a straight line along the mounting port 451 via the sliding rod 52.

[0053] The mounting port 451 has a bracket 46 fixedly installed inside, and the slide rod 52 is slidably installed on the bracket 46. The slide rod 52 is perpendicular to the bracket 46. A retainer 53 is fixedly installed on the surface of the slide rod 52 so that when the float 51 is at its lowest position, the bottom end of the retainer 53 abuts against the bracket 46, thereby limiting the minimum height of the float 51.

[0054] When the pulp is poured into the air guide space 44, the float 51 will float straight up and eventually fit against the mounting port 451, blocking the bottom of the mounting port 451 and preventing a large amount of pulp from being poured into the air guide space 44. When the pulp level drops, the float 51 will move down, thus reopening the mounting port 451.

[0055] Furthermore, since the cooling air resistance encountered by the float 51 gradually increases after it moves upward, in order to automatically reduce the cooling air force and facilitate the smooth upward movement of the float 51 with the buoyancy of the pulp, a detector 55 for detecting the height position of the float 51 is provided on the air guide frame 41. The detector 55 is an infrared detector. A marker block 54 is fixed on the outside of the slide bar 52. The marker block 54 corresponds to the detection direction of the detector 55, and there are two marker blocks 54. When the float 51 moves upward due to the change in pulp level, the uppermost marker block 54 will also move upward. If the marker block 54 moves into the detection range of the detector 55, the data can be transmitted to the external controller after detection by the detector 55. The external controller reduces the airflow of the suction fan 32 to reduce the resistance of the float 51 as it moves upward, making it easier for the float to continue moving upward with the pulp level to block the installation port 451. After the float 51 continues to move upward and the second marker block 54 falls into the detection position of the detector 55, the detector 55 will transmit data, and the external controller will control the suction fan 52 to automatically shut down to save energy. After the float 51 resets, the suction fan 52 will reset its operating mode through the same distance. The detector 55 and related detection arrangement methods are existing technologies and can be implemented through conventional programming. For implementation, consult relevant professional manufacturers for customization, so they will not be described in detail here.

[0056] The above describes the basic principles, main features, and advantages of this utility model. The standard parts used in this utility model can all be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, which will not be described in detail here.

[0057] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pulp refiner with a cooling function, comprising a refiner tank (1) and a refiner assembly (11) disposed on the refiner tank (1). Its features are: It also includes a cooling assembly (2) installed on the grinding tank (1). The cooling assembly (2) includes an air supply assembly (3) and an air guide assembly (4). The air supply assembly (3) is installed on the outside of the grinding tank (1) to introduce cold air from the outside of the grinding tank (1) into the air guide assembly (4). The air guide assembly (4) is installed inside the grinding tank (1), and the air outlet position of the air guide assembly (4) matches the grinding operation area of ​​the grinding assembly (11) so that the cold air can be accurately and timely delivered to the grinding operation area to provide cooling support.

2. A pulp refiner with a cooling function according to claim 1, characterized in that: The grinding assembly (11) includes a grinding disc (111) disposed in the grinding tank (1), and a grinding seat (112) disposed on the outside of the grinding disc (111) to complete the grinding operation in cooperation. The air outlet position of the air guide assembly (4) matches the grinding operation position of the grinding disc (111) and the grinding seat (112).

3. A pulp refiner with a cooling function according to claim 2, characterized in that: The number of air supply components (3) is one, two or more. When the number of air supply components (3) is two or more, they are arranged in a circumferential array along the outside of the grinding tank (1).

4. A pulp refiner with a cooling function according to claim 3, characterized in that: The air supply assembly (3) includes a mounting frame (31) fixed to the outside of the grinding tank (1), and a suction fan (32) is fixedly installed on the side of the mounting frame (31) away from the grinding tank (1).

5. A pulp refiner with a cooling function according to claim 4, characterized in that: The air guide assembly (4) includes an air guide frame (41) that is fixedly connected to the inner wall of the grinding tank (1).

6. A pulp refiner with a cooling function according to claim 5, characterized in that: The air guide frame (41) is provided with a first inclined part (42) and a second inclined part (43) on the outside. The air guide frame (41), the first inclined part (42) and the second inclined part (43) form an air guide space (44) between the air outlet and the grinding tank (1) and the inner wall of the grinding tank (1). The air guide frame (41) and the grinding tank (1) are fixed by a support part (45).

7. A pulp refiner with a cooling function according to claim 6, characterized in that: The grinding tank (1) has a connection port (33) on the outside corresponding to the mounting frame (31), and the inside of the mounting frame (31) is connected to the air guide space (44) through the connection port (33).

8. A pulp refiner with a cooling function according to claim 7, characterized in that: The support part (45) is a straight rod whose two ends are fixedly connected to the grinding tank (1) and the air guide frame (41) respectively.

9. A pulp refiner with a cooling function according to claim 7, characterized in that: The support part (45) is an annular partition plate that is fixedly connected to the grinding tank (1) and the air guide frame (41) on the inner and outer sides respectively. The annular partition plate is provided with a circular mounting port (451) for connecting the anti-reverse assembly. The anti-reverse assembly includes a float (51) with an outer diameter larger than the mounting port (451) and coaxially engaged with the mounting port (451). The top of the float (51) is slidably engaged with the mounting port (451) through a sliding rod (52).

10. A pulp refiner with a cooling function according to claim 9, characterized in that: The air guide frame (41) is equipped with a detector (55) for detecting the height position of the float (51).

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