Mechanical sealing device for self-priming pump

Abstract

The utility model discloses a mechanical sealing device for a self-priming pump, which comprises a movable sleeve, the top end of the movable sleeve is communicated with a fixed ring, a movable sealing ring is arranged at the joint of the movable sleeve and the fixed ring, and a sliding ring is arranged at the inner end of the movable sleeve; a thread is arranged at the outer end of the rubber mounting seat, a sealing cover is arranged at the top end of the rubber mounting seat, a cleaning and lubricating sleeve is fixedly connected into the sealing cover, and the cleaning and lubricating sleeve is in threaded contact with the rubber mounting seat. The sealing ring is arranged at the joint of the movable sleeve and the fixed ring, so that when the movable sleeve and the fixed ring move, the sealing performance of the whole device is kept, and liquid leakage is prevented. The sealing cover is arranged at the top end of the rubber mounting seat, and the cleaning and lubricating sleeve used for maintaining the outer end of the rubber mounting seat is arranged at the bottom end of the sealing cover, so that the connection part of the self-priming pump is maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing of a self-priming pump, in particular to a mechanical sealing device for a self-priming pump. Background Art

[0002] In industrial production, the self-priming pump is a self-priming centrifugal pump, which has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long life, and strong self-priming ability. The pipeline does not need to be installed with a bottom valve. Before working, it is only necessary to ensure that there is a certain amount of lead liquid stored in the pump body. Different materials can be used for different liquids. In order to ensure the sealing of the self-priming pump, a mechanical sealing device of the self-priming pump is required.

[0003] A general mechanical seal device for a self-priming pump is connected to the outlet of the self-priming pump by using a rubber mounting seat at the connection of the self-priming pump, and a pipe for liquid circulation is arranged inside to ensure the normal operation of the self-priming pump while sealing the overall structure. However, some sealing devices are prone to leakage at the sliding connection, affecting the sealing of the overall device. A Chinese patent discloses a mechanical seal device for a self-priming pump with an application number of "CN202020116254.0", which relates to the technical field of self-priming pumps, including a transmission sleeve, a spring, a push ring, a sealing ring, a dynamic ring, a static ring and a rubber ring seat. The spring is pressed in the elastic pressure cavity formed between the transmission sleeve and the push ring, one end of the dynamic ring is pressed and connected with the push ring, and the other end of the dynamic ring is pressed and connected with one end of the static ring. The other end of the static ring is pressed against the inner side of the rubber ring seat, and a stepped portion is provided on the inner ring of the push ring, and the stepped portion extends in the direction of the spring. The sealing ring is embedded in the stepped portion, and one end of the spring abutting against the push ring is sleeved outside the stepped portion, and one end of the dynamic ring abuts against the sealing ring. The utility model has the effects of improving the sealing effect, the installation structure strength and the use performance, but does not solve the problem that the active part of the device is prone to leakage. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and provide a mechanical sealing device for a self-priming pump. By arranging a sealing ring at the joint of a movable sleeve and a fixed ring, it is ensured that the sealing of the entire device is maintained when the movable sleeve and the fixed ring are movable to prevent leakage. By arranging a sealing cover at the top of a rubber mounting seat and arranging a cleaning lubricating sleeve at the bottom of the sealing cover for maintaining the outer end of the rubber mounting seat, the connection part of the self-priming pump can be maintained.

[0005] The utility model also provides a mechanical sealing device for a self-priming pump, comprising: a movable sleeve, the top of which is connected to a fixed ring, a movable sealing ring is provided at the connection between the movable sleeve and the fixed ring, and a sliding ring is provided at the inner end of the movable sleeve; a rubber mounting seat, the outer end of the rubber mounting seat is provided with a thread, a sealing cover is provided at the top of the rubber mounting seat, a cleaning lubricating sleeve is fixedly connected to the inside of the sealing cover, and the cleaning lubricating sleeve is in contact with the thread of the rubber mounting seat. By providing a sealing ring at the junction of the movable sleeve and the fixed ring, it is ensured that the sealing of the entire device is maintained when the movable sleeve and the fixed ring are movable to prevent leakage. By providing a sealing cover at the top of the rubber mounting seat, and providing a cleaning lubricating sleeve for maintaining the outer end of the rubber mounting seat at the bottom end of the sealing cover, the connection part of the self-priming pump can be maintained.

[0006] According to the mechanical sealing device for a self-priming pump described in the utility model, a limiting groove is provided at the side end of the movable sleeve, and the limiting groove is engaged with the connection part of the self-priming pump.

[0007] According to the mechanical sealing device for a self-priming pump described in the utility model, the top end of the fixing ring is fixedly connected to the rubber mounting seat, and the lower end of the movable sleeve is fixedly connected to the connecting tube.

[0008] According to the mechanical sealing device for a self-priming pump described in the utility model, the lower end of the connecting tube is fixedly connected with an arc-shaped connecting ring, and the bottom end of the arc-shaped connecting ring is fixedly connected with a mounting base.

[0009] According to the mechanical sealing device for a self-priming pump described in the utility model, a spring is fixedly connected to the upper end of the interior of the mounting base, and a supporting base is fixedly connected to the upper end of the inner side of the connecting tube.

[0010] According to the mechanical sealing device for a self-priming pump described in the utility model, a sealing ring is arranged inside the support base, and the bottom end of the support base abuts against the end of the spring.

[0011] According to the mechanical sealing device for a self-priming pump described in the utility model, an annular friction layer is fixedly connected to the bottom end of the sliding ring, and the annular friction layer is directly opposite to the supporting base.

[0012] According to the mechanical sealing device for a self-priming pump described in the utility model, the rubber mounting seat is threadedly connected to the self-priming pump, and the rubber mounting seat is a replaceable structure.

[0013] Beneficial Effects

[0014] 1. Compared with the prior art, the mechanical seal device for a self-priming pump provides a sealing ring at the connection between the movable sleeve and the fixed ring, thereby ensuring that the sealing of the entire device is maintained when the movable sleeve and the fixed ring move, thereby preventing leakage.

[0015] 2. Compared with the prior art, the mechanical sealing device for a self-priming pump achieves maintenance of the connection part of the self-priming pump by providing a sealing cover at the top of the rubber mounting seat and a cleaning lubrication sleeve at the bottom of the sealing cover for maintaining the outer end of the rubber mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 It is a structural diagram of the entire utility model;

[0018] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0019] Figure 3 This is a structural diagram of the utility model with the protective cover opened;

[0020] Figure 4 It is a structural diagram of the cross section of the utility model.

[0021] Legend:

[0022] 1. Sealing cover; 2. Fixed ring; 3. Movable sleeve; 4. Limiting groove; 5. Connecting tube; 6. Arc-shaped connecting ring; 7. Mounting base; 8. Movable sealing ring; 9. Annular friction layer; 10. Cleaning and lubricating sleeve; 11. Sliding ring; 12. Rubber mounting seat; 13. Spring; 14. Support base; 15. Sealing ring. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] refer to Figure 1-4The mechanical sealing device for the self-priming pump of this embodiment includes: a movable sleeve 3 to realize the movement of the front end of the sealing device. The top of the movable sleeve 3 is connected to the fixed ring 2 to connect the movable sleeve 3 structure with the corresponding equipment. A movable sealing ring 8 is provided at the connection between the movable sleeve 3 and the fixed ring 2, and a sliding ring 11 is provided at the inner end of the movable sleeve 3; a limiting groove 4 is provided at the side end of the movable sleeve 3, and the limiting groove 4 is engaged with the connection of the self-priming pump. Ensure that the sealing device does not deviate when connected. The top of the fixed ring 2 is fixedly connected to the rubber mounting seat 12, and the lower end of the movable sleeve 3 is fixedly connected to the connecting tube 5. Connect the entire structure. The lower end of the connecting tube 5 is fixedly connected to an arc-shaped connecting ring 6, and the bottom end of the arc-shaped connecting ring 6 is fixedly connected to a mounting base 7. Convenient for the assembly of the entire equipment. The upper end of the mounting base 7 is fixedly connected to a spring 13 to reset the movable part, and the upper end of the inner side of the connecting tube 5 is fixedly connected to a support base 14. A sealing ring 15 is provided inside the support base 14 to ensure the sealing inside the equipment. The bottom end of the support base 14 abuts against the end of the spring 13. The bottom end of the sliding ring 11 is fixedly connected with an annular friction layer 9, which is directly opposite to the support base 14. The internal friction force is increased to prevent the sliding ring 11 from deflecting. The rubber mounting seat 12 is threadedly connected to the self-priming pump, and the rubber mounting seat 12 is a replaceable structure. It is convenient to connect the sealing device.

[0025] The rubber mounting seat 12 has a thread at the outer end thereof, a sealing cover 1 is provided at the top of the rubber mounting seat 12, a cleaning lubricating sleeve 10 is fixedly connected inside the sealing cover 1, and the cleaning lubricating sleeve 10 is in threaded contact with the rubber mounting seat 12, so as to facilitate the protection and maintenance of the rubber mounting seat 12.

[0026] Working principle: When using the equipment, open the sealing cover 1 and take out the entire device. It is necessary to enhance the sliding property of the rubber mounting seat 12 to facilitate connecting the rubber mounting seat 12 with the self-priming pump. Place the lubricating oil inside the clean lubricating sleeve 10, and then rub the clean lubricating sleeve 10 with the rubber mounting seat 12.

[0027] When installing the sealing device, the limiting groove 4 is aligned with the limiting block of the self-priming pump to complete the connection of the sealing device.

[0028] When the movable sleeve 3 moves, the movable sealing ring 8 ensures that no leakage occurs at the connection.

[0029] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A mechanical sealing device for a self-priming pump, characterized in that: include: A movable sleeve (3), the top end of the movable sleeve (3) is connected to a fixed ring (2), a movable sealing ring (8) is provided at the connection between the movable sleeve (3) and the fixed ring (2), and a sliding ring (11) is provided at the inner end of the movable sleeve (3); A rubber mounting seat (12), wherein the outer end of the rubber mounting seat (12) is provided with a thread, a sealing cover (1) is provided at the top end of the rubber mounting seat (12), a cleaning lubricating sleeve (10) is fixedly connected to the inside of the sealing cover (1), and the cleaning lubricating sleeve (10) is in threaded contact with the rubber mounting seat (12).

2. A mechanical seal device for a self-priming pump according to claim 1, characterized in that: A limiting groove (4) is provided at the side end of the movable sleeve (3), and the limiting groove (4) is engaged with the connection position of the self-priming pump.

3. A mechanical seal device for a self-priming pump according to claim 1, characterized in that: The top end of the fixed ring (2) is fixedly connected to the rubber mounting seat (12), and the lower end of the movable sleeve (3) is fixedly connected to the connecting tube (5).

4. A mechanical seal device for a self-priming pump according to claim 3, characterized in that: The lower end of the connecting tube (5) is fixedly connected to an arc-shaped connecting ring (6), and the bottom end of the arc-shaped connecting ring (6) is fixedly connected to a mounting base (7).

5. A mechanical seal device for a self-priming pump according to claim 4, characterized in that: A spring (13) is fixedly connected to the upper inner end of the mounting base (7), and a support base (14) is fixedly connected to the upper inner end of the connecting tube (5).

6. A mechanical seal device for a self-priming pump according to claim 5, characterized in that: A sealing ring (15) is arranged inside the support base (14), and the bottom end of the support base (14) abuts against the end of the spring (13).

7. A mechanical seal device for a self-priming pump according to claim 1, characterized in that: An annular friction layer (9) is fixedly connected to the bottom end of the sliding ring (11), and the annular friction layer (9) is directly opposite to the supporting base (14).

8. A mechanical seal device for a self-priming pump according to claim 1, characterized in that: The rubber mounting seat (12) is threadably connected to the self-priming pump, and the rubber mounting seat (12) is a replaceable structure.

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