Sealing structure for stirring shaft of filter

Abstract

The utility model relates to the technical field of stirring shaft sealing, in particular to a sealing structure for a stirring shaft of a filter, which comprises a shell, a stirring shaft, a gland, a filler, a cooling structure, an oil seal structure and a bottom bushing, the gland is mounted at the top of the shell, the filler is mounted at the bottom of the gland, the cooling structure is mounted on the inner wall of the shell, and the oil seal structure is mounted on the inner wall of the shell. An oil seal structure is mounted at the bottoms of the filler and the cooling structure, the filler and the oil seal structure are rotationally connected with the stirring shaft, and a bottom lining is mounted at the bottom of the oil seal structure. According to the utility model, the oil seal structure is arranged, so that the impact of materials on the filler can be reduced through the oil seal structure, the abrasion of particulate matters in the materials on the filler is reduced, the service life of the filler is prolonged, and the replacement frequency of the filler is reduced, thereby reducing the labor intensity of workers. The cooling structure is arranged, the cooling structure can help the filler to dissipate heat, heat dissipation is accelerated, and the service life of the filler is prolonged conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of stirring shaft sealing, and in particular relates to a sealing structure for a stirring shaft of a filter. Background Art

[0002] Packing seal refers to a dynamic sealing device that generates a compressive force between the packing and the rotating parts and the fixed parts through the self-tightening effect of pre-tightening or medium pressure. It is also called "stuffing box seal". There are many structural forms, mainly composed of packing, stuffing box and packing fixing parts. Commonly used packing materials include asbestos fabric, carbon fiber, rubber, flexible graphite and engineering plastics, which are prefabricated into rings or strips (some need to be pre-impregnated with fillers with good lubricity), and adopt multi-ring or spiral multi-layer structure.

[0003] However, the existing sealing structure for the agitator shaft of the filter often adopts a packing sealing structure, which causes the packing seal to directly contact the material and easily causes wear of the packing, reduces the service life of the packing, and increases the frequency of packing replacement, causing the staff to frequently replace the packing, which is time-consuming and laborious. Therefore, a sealing structure for the agitator shaft of the filter is urgently needed to solve the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems, the purpose of the utility model is to provide a sealing structure for a filter agitator shaft, so as to solve the problem that the existing sealing structure for a filter agitator shaft proposed in the above-mentioned background technology often adopts a packing sealing structure, which causes the packing seal to directly contact the material and easily causes wear of the packing, reduces the service life of the packing, increases the frequency of replacement of the packing, and causes the staff to frequently replace the packing, which is time-consuming and labor-intensive.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing structure for a stirring shaft of a filter, comprising a shell, a stirring shaft, a gland, a filler, a cooling structure, an oil seal structure and a bottom bushing, wherein a gland is installed on the top of the shell, a filler is installed on the bottom of the gland, a cooling structure is installed on the inner wall of the shell, an oil seal structure is installed on the bottom of the filler and the cooling structure, the filler and the oil seal structure are rotatably connected to the stirring shaft, and a bottom bushing is installed on the bottom of the oil seal structure.

[0006] Preferably, the top inner wall of the shell is slidably connected to the outer wall of the gland, the top of the shell is fixedly connected to the gland bolt, and the gland bolt passes through the gland thread and is connected to the gland nut.

[0007] Preferably, the cooling structure includes a heat spreader, a circulating water pipe, a cooling water inlet and a cooling water outlet, and the circulating water pipe is installed in the heat spreader.

[0008] Preferably, the top right end of the circulating water pipe is fixedly connected to the cooling water inlet, and the bottom right end of the circulating water pipe is fixedly connected to the cooling water outlet.

[0009] Preferably, the oil seal structure comprises a rubber layer, a dust lip, a sealing lip, a spring lip and a spring, and the rubber layer is L-shaped.

[0010] Preferably, a side of the rubber layer close to the stirring shaft is fixedly connected to a dust lip, and a bottom of the dust lip is fixedly connected to a sealing lip.

[0011] Preferably, the bottom of the sealing lip is fixedly connected to the spring guard lip, and a spring is installed inside the sealing lip and the spring guard lip.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The sealing structure of the agitator shaft of the filter is provided with an oil seal structure, which can reduce the impact of the material on the filler, reduce the wear of the particles in the material on the filler, increase the service life of the filler, reduce the replacement frequency of the filler, and thus reduce the labor intensity of employees.

[0014] 2. The sealing structure for the stirring shaft of the filter is provided with a cooling structure. During operation, the temperature of the friction between the stirring shaft and the filler is transferred to the heat spreader through the surface of the filler, and the heat is diffused through the heat spreader. The high-pressure water pump is connected to the cooling water inlet, and water is injected into the circulating water pipe through the cooling water inlet and discharged from the cooling water outlet. The heat on the heat spreader is taken away through the circulating water pipe. The cooling structure can help the filler to dissipate heat, accelerate heat loss, and facilitate extending the service life of the filler. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front perspective schematic diagram of the utility model;

[0016] Figure 2 This is a front cross-sectional schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the explosion structure of the cooling structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the explosion structure of the oil seal structure of the utility model.

[0020] In the figure: 1. outer shell; 2. stirring shaft; 3. gland; 4. gland bolt; 5. gland nut; 6. packing; 7. cooling structure; 71. heat sink; 72. circulating water pipe; 73. cooling water inlet; 74. cooling water outlet; 8. oil seal structure; 81. rubber layer; 82. dustproof lip; 83. sealing lip; 84. spring lip guard; 85. spring; 9. bottom bushing. DETAILED DESCRIPTION

[0021] 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 in 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.

[0022] See also Figure 1-5 The utility model provides an embodiment: a sealing structure for a stirring shaft of a filter, comprising a shell 1, a stirring shaft 2, a gland 3, a packing 6, a cooling structure 7, an oil seal structure 8 and a bottom bushing 9. The top of the shell 1 is equipped with a gland 3, the bottom of the gland 3 is equipped with a packing 6, the inner wall of the shell 1 is equipped with a cooling structure 7, the bottom of the packing 6 and the cooling structure 7 are equipped with an oil seal structure 8, the packing 6 and the oil seal structure 8 are rotatably connected to the stirring shaft 2, and the bottom of the oil seal structure 8 is equipped with a bottom bushing 9. The bottom bushing 9 is first installed at the bottom of the oil seal structure 8, the oil seal structure 8 is installed at the bottom of the stirring shaft 2, the packing 6 is inserted between the stirring shaft 2 and the cooling structure 7, the gland bolt 4 is installed at the top of the shell 1, the gland 3 is installed at the top of the shell 1, the gland bolt 4 passes through the gland 3, the gland nut 5 is installed, the gland 3 squeezes the packing 6 downward, and the packing 6 fills the space between the gland 3 and the oil seal structure 8.

[0023] The top inner wall of the housing 1 is slidably connected to the outer wall of the gland 3 , the top of the housing 1 is fixedly connected to the gland bolt 4 , and the gland bolt 4 passes through the gland 3 and is threadedly connected to the gland nut 5 .

[0024] The cooling structure 7 includes a heat spreader 71, a circulating water pipe 72, a cooling water inlet 73 and a cooling water outlet 74. The circulating water pipe 72 is installed in the heat spreader 71. The cooling structure 7 can help the filler 6 to dissipate heat, accelerate heat dissipation, and extend the service life of the filler 6.

[0025] The top right end of the circulating water pipe 72 is fixedly connected to the cooling water inlet 73, and the bottom right end of the circulating water pipe 72 is fixedly connected to the cooling water outlet 74. During operation, the temperature of the friction between the stirring shaft 2 and the filler 6 is transferred to the heat spreader 71 through the surface of the filler 6, and the heat is diffused through the heat spreader 71. A high-pressure water pump is connected to the cooling water inlet 73, and water is injected into the circulating water pipe 72 through the cooling water inlet 73, and discharged from the cooling water outlet 74, and the heat on the heat spreader 71 is taken away through the circulating water pipe 72.

[0026] The oil seal structure 8 includes a rubber layer 81 , a dust lip 82 , a sealing lip 83 , a spring lip 84 and a spring 85 . The rubber layer 81 is L-shaped, and a skeleton is installed inside the rubber layer 81 .

[0027] A dustproof lip 82 is fixedly connected to one side of the rubber layer 81 close to the stirring shaft 2 , and a sealing lip 83 is fixedly connected to the bottom of the dustproof lip 82 .

[0028] The bottom of the sealing lip 83 is fixedly connected to the spring lip guard 84, and a spring 85 is installed inside the sealing lip 83 and the spring lip guard 84. The oil seal structure 8 can reduce the impact of the material on the packing 6, reduce the wear of the particles in the material on the packing 6, increase the service life of the packing 6, and reduce the replacement frequency of the packing 6, thereby reducing the labor intensity of employees.

[0029] Working principle:

[0030] When in use, first install the bottom bushing 9 at the bottom of the oil seal structure 8, install the oil seal structure 8 at the bottom of the stirring shaft 2, insert the filler 6 between the stirring shaft 2 and the cooling structure 7, install the gland bolt 4 at the top of the housing 1, install the gland 3 at the top of the housing 1, let the gland bolt 4 pass through the gland 3, install the gland nut 5, let the gland 3 squeeze the filler 6 downward, so that the filler 6 fills the space between the gland 3 and the oil seal structure 8. During operation, the friction temperature between the stirring shaft 2 and the filler 6 is transferred to the heat spreader 71 through the surface of the filler 6, and the heat spreader 71 makes Heat diffusion, connect the high-pressure water pump to the cooling water inlet 73, inject water into the circulating water pipe 72 through the cooling water inlet 73, and discharge it from the cooling water outlet 74. The heat on the heat spreader 71 is taken away by the circulating water pipe 72. The cooling structure 7 can help the packing 6 to dissipate heat, accelerate heat loss, and extend the service life of the packing 6. The oil seal structure 8 can reduce the impact of the material on the packing 6, reduce the wear of the particles in the material on the packing 6, increase the service life of the packing 6, and reduce the replacement frequency of the packing 6, thereby reducing the labor intensity of employees.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A sealing structure for a stirring shaft of a filter, comprising a housing (1), a stirring shaft (2), a gland (3), a filler (6), a cooling structure (7), an oil seal structure (8) and a bottom bushing (9), characterized in that: A pressure cover (3) is installed on the top of the housing (1), a filler (6) is installed on the bottom of the pressure cover (3), a cooling structure (7) is installed on the inner wall of the housing (1), an oil seal structure (8) is installed at the bottom of the filler (6) and the cooling structure (7), the filler (6) and the oil seal structure (8) are rotatably connected to the stirring shaft (2), and a bottom bushing (9) is installed at the bottom of the oil seal structure (8).

2. A sealing structure for a stirring shaft of a filter according to claim 1, characterized in that: The top inner wall of the housing (1) is slidably connected to the outer wall of the gland (3), the top of the housing (1) is fixedly connected to the gland bolt (4), and the gland bolt (4) passes through the gland (3) and is threadedly connected to the gland nut (5).

3. A sealing structure for a stirring shaft of a filter according to claim 2, characterized in that: The cooling structure (7) comprises a heat spreader (71), a circulating water pipe (72), a cooling water inlet (73) and a cooling water outlet (74), and the circulating water pipe (72) is installed in the heat spreader (71).

4. A sealing structure for a stirring shaft of a filter according to claim 3, characterized in that: The top right end of the circulating water pipe (72) is fixedly connected to the cooling water inlet (73), and the bottom right end of the circulating water pipe (72) is fixedly connected to the cooling water outlet (74).

5. The sealing structure for a stirring shaft of a filter according to claim 1, characterized in that: The oil seal structure (8) comprises a rubber layer (81), a dustproof lip (82), a sealing lip (83), a spring lip (84) and a spring (85), and the rubber layer (81) is L-shaped.

6. A sealing structure for a stirring shaft of a filter according to claim 5, characterized in that: The side of the rubber layer (81) close to the stirring shaft (2) is fixedly connected to a dustproof lip (82), and the bottom of the dustproof lip (82) is fixedly connected to a sealing lip (83).

7. A sealing structure for a stirring shaft of a filter according to claim 6, characterized in that: The bottom of the sealing lip (83) is fixedly connected to the spring protection lip (84), and a spring (85) is installed inside the sealing lip (83) and the spring protection lip (84).

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