Efficient sealing structure of vacuum filter

Abstract

The efficient sealing structure comprises a tank body and a stirring shaft which is rotatably connected with the tank body in a penetrating mode, one side of the tank body is integrally connected with a connecting bolt, the outer portion of the stirring shaft is fixedly sleeved with a shaft sleeve, one side of the tank body is fixedly provided with a pressing plate through the connecting bolt, and the other side of the tank body is fixedly provided with a sealing ring. The middle part of the pressing plate is integrally connected with a filler cylinder, the filler cylinder is sleeved outside the shaft sleeve, the shaft sleeve is sleeved with a supporting ring, one side of the supporting ring is connected with one side, close to the tank body, in the filler cylinder in a sealing manner, and the filler cylinder is filled with a sealing filler positioned on the other side of the supporting ring. Lubricating oil is input into the gap between the sealing filler and the shaft sleeve through the multiple oil outlets under the capillary action, so that an oil seal structure is formed, the sealing filler and the outer diameter of the shaft sleeve form a filler sealing structure together, the two sealing structures are combined for application, and the sealing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum filters, in particular to a high-efficiency sealing structure of a vacuum filter. Background Art

[0002] Disc vacuum filter is a solid-liquid separation equipment, which uses vacuum as filtering power to separate the solid and liquid of slurry. Disc vacuum filter is suitable for dehydration of iron ore concentrate and nonferrous metal concentrate, as well as dehydration in coal washing plant, non-metallic mine, chemical industry and environmental protection. The two ends of the stirring shaft of disc vacuum filter are equipped with sealing devices to prevent the slurry in the tank from overflowing through the joint between the stirring shaft and the tank.

[0003] The agitator shaft packing sealing structure of the prior art is often prone to failure. The reason is that the axial and radial forces transmitted to the agitator shaft change frequently, causing the axial and radial vibrations of the agitator shaft to be very strong. The agitator shaft is fixed to the sleeve, and the axial stringing distance and radial clearance between the contact surfaces of the sleeve and the packing vary greatly. Moreover, these changes are periodic as the shaft and the sleeve rotate, causing the sealing packing to be always in an overtight or overloose working state, failing to form a good "maze effect" and "bearing effect", which will cause slurry leakage or squeeze the packing.

[0004] Therefore, we propose a high-efficiency sealing structure for a vacuum filter. Summary of the invention

[0005] The purpose of the utility model is to provide a high-efficiency sealing structure of a vacuum filter to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency sealing structure of a vacuum filter, comprising a tank body and a stirring shaft that is rotatably connected to the tank body, one side of the tank body is integrally connected with a connecting bolt, the external fixed sleeve of the stirring shaft is provided with a shaft sleeve, one side of the tank body is fixedly installed with a pressure plate through the connecting bolts, the middle part of the pressure plate is integrally connected with a packing cylinder, the packing cylinder is sleeved on the outside of the shaft sleeve, the external sleeve of the shaft sleeve is sleeved with a supporting ring, one side of the supporting ring is sealingly connected with the inner side of the packing cylinder close to the tank body, the interior of the packing cylinder is filled with a sealing packing located on the other side of the supporting ring, the other side of the sealing packing is provided with a packing gland sleeved with the packing cylinder, a connecting groove is opened inside the supporting ring, and an oil outlet hole begins to be provided on the side of the connecting groove close to the sealing packing, an oil delivery pipe is fixedly installed through the middle part of the packing cylinder, an oil storage tank located on one side of the oil delivery pipe is fixedly installed on the outer peripheral surface of the packing cylinder, one end of the oil delivery pipe is connected to the interior of the connecting groove, and the other end of the oil delivery pipe is connected to the oil storage tank.

[0007] Optionally, the outer circumference of the sleeve is integrally connected with a connecting convex ring that is flush with the slot body and sealed, the thickness of the connecting convex ring is the same as the thickness of the slot body, the outer circumference of the filler tube is integrally connected with a pressure plate on the side close to the slot body, and a rubber flange is arranged between the pressure plate and the slot body.

[0008] Optionally, an O-ring is fixedly mounted on one side of the support ring close to the groove body, and the support ring is sealed with the inner wall of the stuffing tube through the O-ring.

[0009] Optionally, the outer circumferential surface of the other side of the packing cylinder is integrally connected with a fixed disc, one side of the fixed disc is flush with the end of the packing cylinder, and the end of the packing gland is integrally connected with a connecting round cover, and the connecting round cover has the same diameter as the fixed disc.

[0010] Optionally, the connecting circular cover is penetrated by an adjusting bolt located outside the packing gland, the end of the adjusting bolt is threadedly connected to the fixed circular disc, and the outer sleeve of the adjusting bolt is provided with a spring.

[0011] Optionally, the outer sleeve of the adjusting bolt is provided with a gasket close to one side of the bolt head, one end of the spring is in tight contact with the side surface of the connecting disk, and the other side of the spring is in tight contact with the gasket.

[0012] Optionally, a plurality of positioning grooves are provided in the middle of the pressure plate, and a positioning protrusion adapted to the positioning grooves is integrally provided on one side of the rubber flange.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The efficient sealing structure of the vacuum filter is provided with a connecting groove, and the lubricating oil is input into the connecting groove through the oil pipe, and then the lubricating oil is input into the gap between the sealing packing and the shaft sleeve through a plurality of oil outlet holes under the capillary action, thereby forming an oil seal structure. The sealing packing and the outer diameter of the shaft sleeve together form a packing seal structure. The combined application of the two sealing structures improves the sealing effect and reduces the resistance to the rotation of the agitator shaft.

[0015] The high-efficiency sealing structure of the vacuum filter is provided with sealing packing and packing gland. By rotating the adjusting bolt, the spring is forced to contract, thereby squeezing the connecting round cover, and then adjusting the squeezing force of the packing gland on the sealing packing. When the sealing packing is axially compressed, the radial compression force generated makes the packing close to the surface of the sleeve to prevent the slurry from being outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency sealing structure of a vacuum filter of the utility model;

[0017] Figure 2The utility model is a vacuum filter with an efficient sealing structure. Figure 1 The enlarged view of point A in the middle;

[0018] Figure 3 The utility model is a vacuum filter with an efficient sealing structure. Figure 1 The enlarged view of point B in the middle;

[0019] Figure 4 The utility model is a structural schematic diagram of a packing cylinder of a high-efficiency sealing structure of a vacuum filter.

[0020] In the figure: 1. agitator shaft; 2. tank body; 3. sleeve; 4. connecting convex ring; 5. stuffing cylinder; 6. support ring; 7. sealing stuffing; 8. stuffing gland; 9. connecting groove; 10. oil outlet hole; 11. oil storage tank; 12. oil pipeline; 13. pressure plate; 14. rubber flange; 15. connecting bolt; 16. fixing disc; 17. connecting round cover; 18. adjusting bolt; 19. spring; 20. gasket; 21. O-ring. 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 Figures 1 to 4The utility model provides a high-efficiency sealing structure of a vacuum filter, including a tank body 2 and a stirring shaft 1 that is rotatably connected to the tank body 2, one side of the tank body 2 is integrally connected with a connecting bolt 15, an external fixed sleeve of the stirring shaft 1 is provided with a shaft sleeve 3, one side of the tank body 2 is fixedly installed with a pressing plate 13 through the connecting bolt 15, a packing tube 5 is integrally connected to the middle part of the pressing plate 13, the packing tube 5 is sleeved on the outside of the shaft sleeve 3, a supporting ring 6 is sleeved on the outside of the shaft sleeve 3, one side of the supporting ring 6 is sealingly connected to the side of the packing tube 5 close to the tank body 2, the inside of the packing tube 5 is filled with a sealing packing 7 located on the other side of the supporting ring 6, a packing gland 8 sleeved with the packing tube 5 is provided on the other side of the sealing packing 7, and a connecting groove 9 is provided inside the supporting ring 6 An oil outlet hole 10 begins to be formed on the side of the connecting groove 9 close to the sealing packing 7. An oil pipe 12 is fixedly installed through the middle of the packing cylinder 5. An oil storage tank 11 located on one side of the oil pipe 12 is fixedly installed on the outer peripheral surface of the packing cylinder 5. One end of the oil pipe 12 is connected to the inside of the connecting groove 9, and the other end of the oil pipe 12 is connected to the oil storage tank 11. By setting the connecting groove 9, the lubricating oil is input into the connecting groove 9 through the oil pipe 12, and the lubricating oil is input into the gap between the sealing packing 7 and the sleeve 3 through a plurality of oil outlet holes 10 under the action of capillarity, thereby forming an oil seal structure. The sealing packing 7 and the outer diameter of the sleeve 3 together form a packing seal structure. The two sealing structures are used in combination to improve the sealing effect and reduce the resistance to the rotation of the agitator shaft 1.

[0023] The outer circumference of the sleeve 3 is integrally connected with a connecting convex ring 4 which is flush with the slot body 2 and sealed. The thickness of the connecting convex ring 4 is the same as the thickness of the slot body 2. The outer circumference of the stuffing tube 5 is integrally connected with a pressure plate 13 on the side close to the slot body 2. A rubber flange 14 is arranged between the pressure plate 13 and the slot body 2. An O-ring 21 is fixedly installed on the side of the support ring 6 close to the slot body 2. The support ring 6 is sealed with the inner wall of the stuffing tube 5 through the O-ring 21. A plurality of positioning grooves are opened in the middle of the pressure plate 13. A positioning protrusion which is adapted to the positioning groove is integrally arranged on one side of the rubber flange 14.

[0024] The outer circumferential surface of the other side of the packing cylinder 5 is integrally connected with a fixed disc 16, one side of the fixed disc 16 is arranged flush with the end of the packing cylinder 5, and the end of the packing gland 8 is integrally connected with a connecting round cover 17, the connecting round cover 17 has the same diameter as the fixed disc 16, and the connecting round cover 17 is penetrated by an adjusting bolt 18 located on the outside of the packing gland 8, and the end of the adjusting bolt 18 is threadedly connected with the fixed disc 16, and a spring 19 is sleeved on the outside of the adjusting bolt 18, and a gasket 20 close to one side of the bolt head is sleeved on the outside of the adjusting bolt 18, one end of the spring 19 is in close contact with the side of the connecting disc, and the other side of the spring 19 is in close contact with the gasket 20, by arranging the sealing packing 7 and the packing gland 8, by rotating the adjusting bolt 18, the spring 19 is forced to shrink, and then the connecting round cover 17 is squeezed, and then the squeezing force of the packing gland 8 on the sealing packing 7 is adjusted, and when the sealing packing 7 is axially compressed, the radial compression force generated makes the packing close to the surface of the shaft sleeve 3 and prevents the slurry from being outside.

[0025] Working principle:

[0026] The lubricating oil is input into the connecting groove 9 through the oil delivery pipe 12, and the lubricating oil is input into the gap between the sealing packing 7 and the sleeve 3 through a plurality of oil outlet holes 10 under the capillary action, thereby forming an oil seal structure. The sealing packing 7 and the outer diameter of the sleeve 3 together form a packing seal structure. The combined application of the two sealing structures improves the sealing effect and reduces the resistance to the rotation of the stirring shaft 1. By rotating the adjusting bolt 18, the spring 19 is forced to shrink, thereby squeezing the connecting round cover 17, and then adjusting the squeezing force of the packing gland 8 on the sealing packing 7. When the sealing packing 7 is axially compressed, the radial compression force generated makes the packing close to the surface of the sleeve 3 and prevents the slurry from being outside.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency sealing structure for a vacuum filter, comprising a tank body (2) and a stirring shaft (1) penetrating and rotatably connected to the tank body (2), characterized in that: One side of the tank body (2) is integrally connected with a connecting bolt (15); the outer fixed sleeve of the stirring shaft (1) is provided with a shaft sleeve (3); one side of the tank body (2) is fixedly mounted with a pressing plate (13) via the connecting bolt (15); the middle part of the pressing plate (13) is integrally connected with a stuffing tube (5); the stuffing tube (5) is sleeved on the outside of the shaft sleeve (3); the outer sleeve of the shaft sleeve (3) is sleeved with a supporting ring (6); one side of the supporting ring (6) is sealingly connected to a side of the inside of the stuffing tube (5) close to the tank body (2); the inside of the stuffing tube (5) is filled with a sealing filler located on the other side of the supporting ring (6). (7), a packing gland (8) sleeved with the packing tube (5) is provided on the other side of the sealing packing (7), a connecting groove (9) is provided inside the supporting ring (6), an oil outlet hole (10) is provided on the side of the connecting groove (9) close to the sealing packing (7), an oil delivery pipe (12) is fixedly installed through the middle of the packing tube (5), an oil storage tank (11) located on one side of the oil delivery pipe (12) is fixedly installed on the outer peripheral surface of the packing tube (5), one end of the oil delivery pipe (12) is connected to the inside of the connecting groove (9), and the other end of the oil delivery pipe (12) is connected to the oil storage tank (11).

2. The high-efficiency sealing structure of a vacuum filter according to claim 1, characterized in that: The outer circumferential surface of the shaft sleeve (3) is integrally connected with a connecting convex ring (4) which is flush with and sealingly connected to the tank body (2); the thickness of the connecting convex ring (4) is the same as the thickness of the tank body (2); the outer circumferential surface of the stuffing cylinder (5) is integrally connected with a pressing plate (13) on one side close to the tank body (2); a rubber flange (14) is provided between the pressing plate (13) and the tank body (2).

3. The high-efficiency sealing structure of a vacuum filter according to claim 1, characterized in that: An O-ring (21) is fixedly mounted on one side of the support ring (6) close to the tank body (2), and the support ring (6) is sealed with the inner wall of the filling tube (5) via the O-ring (21).

4. The high-efficiency sealing structure of a vacuum filter according to claim 1, characterized in that: The outer circumferential surface of the other side of the packing cylinder (5) is integrally connected with a fixed disc (16), one side of the fixed disc (16) is arranged flush with the end of the packing cylinder (5), and the end of the packing gland (8) is integrally connected with a connecting round cover (17), the connecting round cover (17) having the same diameter as the fixed disc (16).

5. The high-efficiency sealing structure of a vacuum filter according to claim 4, characterized in that: The connecting circular cover (17) is provided with an adjusting bolt (18) located outside the packing gland (8), the end of the adjusting bolt (18) is threadedly connected to the fixed disc (16), and the outer portion of the adjusting bolt (18) is sleeved with a spring (19).

6. The high-efficiency sealing structure of a vacuum filter according to claim 5, characterized in that: The outer sleeve of the adjusting bolt (18) is provided with a gasket (20) close to one side of the bolt head, one end of the spring (19) is in tight contact with the side surface of the connecting disc, and the other side of the spring (19) is in tight contact with the gasket (20).

7. The high-efficiency sealing structure of a vacuum filter according to claim 2, characterized in that: A plurality of positioning grooves are provided in the middle of the pressure plate (13), and a positioning protrusion adapted to the positioning grooves is integrally provided on one side of the rubber flange (14).

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