Cooling system device of high-concentration pulping machine for mechanical pulp

Abstract

A cooling system device of a mechanical pulp high-concentration pulping machine relates to the technical field of cooling devices and comprises an oil tank, an oil pump, a filter, a cooler and a lubricating system which are sequentially connected. A self-circulation pipeline is connected to the oil tank, an auxiliary cooler is connected to the self-circulation pipeline, and a cooling water inlet and outlet pipe of the cooler is connected with a cooling water inlet and outlet pipe of the auxiliary cooler through branch pipelines. The utility model solves the problems that in the prior art, a plate cooler is poor in cooling effect, the temperature is continuously increased along with the prolonging of working time, the temperature of lubricating oil is high, and a high-concentration mill is directly linked to stop; and a heat exchanger system cannot be detached, impurities are easily mixed into the system, hidden dangers of equipment and spare parts exist, cleaning is troublesome after faults occur, and the labor intensity of workers is increased.

Description

Technical Field

[0001] This utility model relates to the field of cooling device technology, specifically to a cooling system device for a high-consistency mechanical pulp refiner. Background Technology

[0002] High-consistency refiners are mainly used to process raw materials such as chemical pulp, semi-chemical pulp, mechanical pulp, and block pulp residue. The equipment is highly adaptable, applicable to a wide range of pulps, involves minimal fiber cutting, and exhibits significant fiber fibrillation, improving fiber swelling and softness, resulting in better pulp quality. During the refining process, friction and compression generate heat, necessitating improved heat dissipation performance. Each high-consistency refiner is equipped with an oil pump system to control the disc clearance and cool and lubricate the rotor assembly. Two DOC60-60 heat exchangers are used to cool the lubricating oil. A malfunction in this system directly affects the normal operation of the refiner.

[0003] Existing such as Figure 3 As shown, it includes an oil tank 100, an oil pump 200, a filter 300, a cooler 400, and a lubrication system 500. The working oil passes through the filter 300 and the cooler 400 to reach the lubrication points of the lubrication system.

[0004] As existing devices are used, the shortcomings of this technology have gradually become apparent, mainly in the following aspects:

[0005] First, the existing plate coolers have poor cooling performance and will continue to heat up as the working time increases, resulting in high lubricating oil temperature and directly causing the high-concentration mill to stop.

[0006] Secondly, the heat exchanger system is not disassembled, and impurities can easily get into the system, posing potential risks to equipment and spare parts. Cleaning after a failure is troublesome and increases the labor intensity of workers.

[0007] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a cooling system device for a high-consistency refiner for mechanical pulp, which solves the problems of poor cooling effect of plate coolers in traditional technologies, continuous temperature rise with prolonged working time, resulting in high lubricating oil temperature and direct chain shutdown of the high-consistency refiner; and the non-removable heat exchanger system, which allows impurities to easily enter the system, posing potential hazards to equipment and spare parts, making cleaning after failure troublesome, and increasing the labor intensity of workers.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A cooling system for a high-consistency mechanical pulp refiner includes an oil tank, an oil pump, a filter, a cooler, and a lubrication system connected in sequence. The oil tank is connected to a self-circulating pipeline, and an auxiliary cooler is connected to the self-circulating pipeline. The cooling water inlet and outlet pipes of the cooler are respectively connected to the cooling water inlet and outlet pipes of the auxiliary cooler through branch pipes.

[0011] The filter includes a filter cartridge, inside which a detachable filter screen is rotatably mounted. An oil inlet cylinder is connected to the upper end of the filter cartridge and communicates with the inner cavity of the filter screen cylinder. An oil outlet cylinder is fixed to the outer wall of the filter cartridge, communicating with the area between the outer wall of the filter screen cylinder and the inner wall of the filter cartridge.

[0012] As an optimized solution, the upper end of the filter cartridge is sealed, and the lower end of the filter cartridge is detachably connected to a bottom cover using bolts.

[0013] As an optimized solution, an impurity discharge cylinder is fixedly connected to the bottom cover. The upper end of the impurity discharge cylinder extends into the interior of the filter cylinder and is fixedly connected to a collection tray. The upper surface of the collection tray is provided with a collection groove that communicates with the impurity discharge cylinder. The collection groove is arranged in a gradually decreasing shape from top to bottom.

[0014] As an optimized solution, a plurality of scraper bars are provided on the upper surface of the collection tray near the outer edge, and the sidewalls of the scraper bars are in frictional contact with the inner wall of the filter cylinder.

[0015] As an optimized solution, the upper surface of the bottom cover and the inner top surface of the filter cylinder are rotatably mounted with support plates, and the two support plates are provided with annular insertion grooves on their opposite end faces. The two ends of the filter cylinder are inserted into the two annular insertion grooves respectively.

[0016] As an optimized solution, the lower support plate is provided with a clearance hole to avoid the impurity discharge cylinder.

[0017] As an optimized solution, the lower port of the impurity discharge tube extends to the bottom of the bottom cover and is threadedly connected with a plug.

[0018] As an optimized solution, the upper end of the filter cartridge is rotatably provided with a rotating cylinder, and the support plate above it is provided with a mounting hole, and the support plate is fixed to the rotating cylinder through the mounting hole.

[0019] As an optimized solution, the upper port of the rotating drum extends above the filter screen, and the oil inlet cylinder is rotatably inserted into the upper port of the rotating drum.

[0020] As an optimized solution, a toothed ring is fixedly connected to the outer wall of the rotating drum, and a drive motor is fixedly connected to the outer top surface of the filter cylinder. The output end of the drive motor meshes with the toothed ring using a gear.

[0021] As an optimized solution, a self-circulating oil pump is connected to the self-circulating pipeline.

[0022] As an optimized solution, valves are connected to each of the two branch pipes.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] By independently setting up a self-circulation pipeline for the oil tank and installing an auxiliary cooler on the self-circulation pipeline, the lubricating oil in the oil tank can be cooled to reduce the temperature of the lubricating oil, avoid downtime accidents, and ensure the normal operation of the equipment.

[0025] By modifying the filter, during use, the drive motor rotates the filter cylinder, which scrapes off impurities adhering to the inner wall of the filter cylinder during rotation, improving the efficiency of oil passing through the filter cylinder and increasing filtration efficiency. The scraped-off impurities will settle into the impurity discharge cylinder through the collection tank under the action of gravity. Later, the impurities inside can be discharged by opening the plug, which is convenient and quick.

[0026] The bottom cover is connected to the filter cartridge with bolts. When the filter cartridge needs to be replaced, remove the bottom cover, remove the support plate below, and remove the filter cartridge from the annular insertion slot to replace the filter cartridge. It is convenient and quick. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the filter of this utility model;

[0030] Figure 3 This is a schematic diagram of the existing technology.

[0031] In the diagram: 1-oil tank; 2-oil pump; 3-filter; 4-cooler; 5-lubrication system; 6-self-circulating pipeline; 7-self-circulating oil pump; 8-auxiliary cooler; 9-branch pipeline; 10-valve; 11-filter cartridge; 12-filter screen cartridge; 13-support plate; 14-bottom cover; 15-collection tray; 16-collection trough; 17-scraper bar; 18-impurity discharge cylinder; 19-plug; 20-oil inlet cylinder; 21-oil outlet cylinder; 22-toothed ring; 23-drive motor; 24-rotating drum. Detailed Implementation

[0032] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0033] like Figure 1 and Figure 2 As shown, the cooling system of the high-consistency mechanical pulp refiner includes an oil tank 1, an oil pump 2, a filter 3, a cooler 4, and a lubrication system 5 connected in sequence. The oil tank 1 is connected to a self-circulating pipeline 6, and the self-circulating pipeline 6 is connected to an auxiliary cooler 8. The cooling water inlet and outlet pipes of the cooler 4 are connected to the cooling water inlet and outlet pipes of the auxiliary cooler 8 through branch pipes 9, respectively.

[0034] The filter 3 includes a filter cartridge 11, a detachable filter screen 12 is rotatably disposed inside the filter cartridge 11, an oil inlet cylinder 20 connected to the upper end of the filter cartridge 11 and communicating with the inner cavity of the filter screen 12, and an oil outlet cylinder 21 connected to the outer wall of the filter cartridge 11 and communicating with the area between the outer wall of the filter screen 12 and the inner wall of the filter cartridge 11.

[0035] The upper end of the filter cartridge 11 is sealed, and the lower end of the filter cartridge 11 is detachably connected to the bottom cover 14 by bolts.

[0036] An impurity discharge cylinder 18 is fixedly connected to the bottom cover 14. The upper end of the impurity discharge cylinder 18 extends into the filter screen cylinder 12 and is fixedly connected to a collection tray 15. A collection groove 16 communicating with the impurity discharge cylinder 18 is opened on the upper surface of the collection tray 15. The collection groove 16 is arranged in a gradually narrowing manner from top to bottom.

[0037] A number of scraper rods 17 are arranged around the upper surface of the collection tray 15 near the outer edge, and the side wall of the scraper rod 17 is in frictional contact with the inner wall of the filter screen cylinder 12.

[0038] Support plates 13 are rotatably mounted on the upper surface of the bottom cover 14 and the inner top surface of the filter cylinder 11. Annular insertion grooves are opened on the opposite end faces of the two support plates 13, and the two ends of the filter cylinder 12 are inserted into the two annular insertion grooves respectively.

[0039] The lower support plate 13 has a clearance hole for the impurity discharge tube 18.

[0040] The lower port of the impurity discharge tube 18 extends to the bottom of the bottom cover 14 and is threadedly connected to a plug 19.

[0041] The upper end of the filter cartridge 11 is rotatably provided with a rotating cylinder 24, and the upper support plate 13 is provided with a mounting hole. The support plate 13 is fixed to the rotating cylinder 24 through the mounting hole.

[0042] The upper port of the rotating drum 24 extends above the filter screen, and the oil enters the drum 20 and is rotated and inserted into the upper port of the rotating drum 24.

[0043] A gear ring 22 is fixedly connected to the outer wall of the rotating drum 24, and a drive motor 23 is fixedly connected to the outer top surface of the filter cylinder 11. The output end of the drive motor 23 meshes with the gear ring 22 using a gear.

[0044] A self-circulating oil pump 7 is connected to the self-circulating pipeline 6.

[0045] Valves 10 are connected to the two branch pipes 9 respectively.

[0046] The working principle of this device is as follows:

[0047] By independently setting a self-circulation pipeline 6 for oil tank 1 and installing an auxiliary cooler 8 on the self-circulation pipeline 6, the lubricating oil in oil tank 1 can be cooled to reduce the lubricating oil temperature, avoid downtime accidents, and ensure normal operation of the equipment.

[0048] By modifying the filter 3, during use, the drive motor 23 drives the filter cylinder 12 to rotate. During the rotation, the filter cylinder 12 scrapes off the impurities adhering to the inner wall of the filter cylinder 12, improving the efficiency of oil passing through the filter cylinder 12 and improving the filtration efficiency. The scraped-off impurities will settle into the impurity discharge cylinder 18 through the collection tank 16 under the action of gravity. Later, the impurities inside can be discharged by opening the plug 19, which is convenient and quick.

[0049] The bottom cover 14 is connected to the filter cartridge 11 by bolts. When the filter cartridge 12 needs to be replaced, the bottom cover 14 is removed, the support plate 13 below is removed, and the filter cartridge 12 is removed from the annular insertion groove, so that the filter cartridge 12 can be replaced, which is convenient and quick.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A cooling system device for a high-consistency mechanical pulp refiner, characterized in that: The system includes an oil tank (1), an oil pump (2), a filter (3), a cooler (4), and a lubrication system (5) connected in sequence. A self-circulating pipeline (6) is connected to the oil tank (1), and an auxiliary cooler (8) is connected to the self-circulating pipeline (6). The cooling water inlet and outlet pipes of the cooler (4) are connected to the cooling water inlet and outlet pipes of the auxiliary cooler (8) via branch pipes (9). The filter (3) includes a filter cylinder (11), a detachable filter screen cylinder (12) is rotatably provided inside the filter cylinder (11), an oil inlet cylinder (20) connected to the upper end of the filter cylinder (11) and communicating with the inner cavity of the filter screen cylinder (12), and an oil outlet cylinder (21) connected to the outer wall of the filter cylinder (11) and communicating with the area between the outer wall of the filter screen cylinder (12) and the inner wall of the filter cylinder (11).

2. The cooling system device for a high-consistency mechanical pulp refiner according to claim 1, characterized in that: The upper end of the filter cartridge (11) is sealed, and the lower end of the filter cartridge (11) is detachably connected to a bottom cover (14) by bolts.

3. The cooling system device for a high-consistency mechanical pulp refiner according to claim 2, characterized in that: An impurity discharge cylinder (18) is fixedly connected to the bottom cover (14). The upper end of the impurity discharge cylinder (18) extends into the filter cylinder (12) and is fixedly connected to a collection tray (15). A collection groove (16) communicating with the impurity discharge cylinder (18) is opened on the upper surface of the collection tray (15). The collection groove (16) is gradually narrowed from top to bottom.

4. The cooling system device for a high-consistency mechanical pulp refiner according to claim 3, characterized in that: The upper surface of the collection tray (15) near the outer edge is surrounded by a number of scraper rods (17), and the side wall of the scraper rods (17) is in frictional contact with the inner wall of the filter cylinder (12).

5. The cooling system device for a high-consistency mechanical pulp refiner according to claim 4, characterized in that: Support plates (13) are rotatably mounted on the upper surface of the bottom cover (14) and the inner top surface of the filter cylinder (11). Annular insertion grooves are opened on the opposite end faces of the two support plates (13), and the two ends of the filter cylinder (12) are correspondingly inserted into the two annular insertion grooves.

6. The cooling system device for a high-consistency mechanical pulp refiner according to claim 5, characterized in that: The lower port of the impurity discharge tube (18) extends below the bottom cover (14) and is threaded with a plug (19).

7. The cooling system device for a high-consistency mechanical pulp refiner according to claim 6, characterized in that: The filter cartridge (11) is rotatably provided with a rotating cylinder (24) at its upper end. The support plate (13) located above it has an installation hole, and the support plate (13) is fixed to the rotating cylinder (24) through the installation hole.

8. The cooling system device for a high-consistency mechanical pulp refiner according to claim 7, characterized in that: The upper port of the rotating drum (24) extends above the filter screen, and the oil inlet cylinder (20) is rotatably inserted into the upper port of the rotating drum (24).

9. The cooling system device for a high-consistency mechanical pulp refiner according to claim 8, characterized in that: A self-circulating oil pump (7) is connected to the self-circulating pipeline (6).

10. The cooling system device for a high-consistency mechanical pulp refiner according to claim 9, characterized in that: Valves (10) are connected to the two branch pipes (9) respectively.

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