Sealing pressure adjustable mechanical sealing device

Abstract

The utility model relates to the technical field of mechanical sealing, in particular to a sealing pressure adjustable mechanical sealing device which comprises a first pipeline seat and a second pipeline seat, a movable lantern ring is sleeved outside the first pipeline seat in a sliding mode, and a fixed lantern ring is fixedly sleeved outside the second pipeline seat. The fixed lantern ring is spliced with the movable sleeve, a sealing gasket is clamped at the splicing position of the first pipeline seat and the second pipeline seat, and the fixing part is used for splicing and fixing the first pipeline seat and the second pipeline seat. The installation process can be completed by manually pulling the movable lantern ring and rotating the nut, no complex tool or equipment is needed, the sealing pressure can be adjusted according to actual requirements in the using process, the sealing requirements under the conditions of different media, temperatures and pressures are met, the elastic force of the spring and the fastening effect of the nut are utilized, and the sealing effect is good. Therefore, the sealing washer is stable and not easy to fall off, and the stability and reliability of connection are improved.

Description

Technical Field

[0001] The utility model relates to the field of mechanical seals, in particular to a mechanical seal device with adjustable sealing pressure. Background Art

[0002] Pipe connectors are devices or components used to connect two or more pipes. They connect, seal, and support pipes within a piping system. Mechanical seals on pipe connectors are devices used to create a seal at the pipe joint. This seal is achieved through the interaction between the sealing ring and the contact surface.

[0003] At present, in order to adjust the sealing pressure during the use of sealing devices, most of them add sealing gaskets at the required sealing positions to form a sealing effect. However, the sealing gaskets are easily affected by impact and fall off during use, and the sealing pressure cannot be adjusted according to actual needs, resulting in the sealing pressure being too high or too low, which leads to an unsatisfactory sealing effect. Utility Model Content

[0004] The purpose of the utility model is to solve the problems of unsatisfactory sealing effect and inability to adjust the sealing pressure of the sealing device in the prior art, and to propose a mechanical sealing device with adjustable sealing pressure.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A mechanical seal device with adjustable sealing pressure includes a first pipe seat and a second pipe seat, wherein a movable collar is slidably sleeved on the outside of the first pipe seat, and a fixed collar is fixedly sleeved on the outside of the second pipe seat, the fixed collar and the movable collar are spliced ​​together, and a sealing gasket is clamped at the splicing point between the first pipe seat and the second pipe seat;

[0007] Also includes:

[0008] A fixing piece is used to splice and fix the first pipe seat and the second pipe seat.

[0009] Preferably, the inner walls of the first pipe seat and the second pipe seat are respectively provided with arc-shaped grooves for engaging with sealing gaskets.

[0010] Preferably, the fixing member further comprises:

[0011] a spring fixed to the outer side wall of the first pipe seat and the inner side wall of the movable collar;

[0012] Connecting blocks, the connecting blocks are relatively fixed on the upper and lower sides of the movable ring;

[0013] a fixing rod, the fixing rod being on the connecting block;

[0014] a screw groove, the screw groove being provided on the fixing rod;

[0015] A nut is threadedly sleeved on the fixing rod.

[0016] Preferably, the fixing member comprises:

[0017] A fixing block, the fixing block being relatively fixed on the upper and lower sides of the fixing collar;

[0018] A through hole is provided on the fixing block.

[0019] Preferably, the fixing rod is inserted into the through hole, and the diameter of the fixing rod is smaller than the diameter of the through hole.

[0020] Preferably, annular outward protrusions are provided on both sides of the sealing gasket, and the annular outward protrusions on both sides of the sealing gasket cooperate with the arc-shaped groove.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The utility model changes the pressing force between the sealing gasket and the first pipe seat and the second pipe seat by adjusting the position of the movable ring, so that the sealing pressure can be adjusted according to actual needs to adapt to the sealing requirements under different media, temperature and pressure conditions, and avoid the sealing effect being affected by excessively high or low sealing pressure.

[0023] 2. The utility model realizes a tight connection between the first pipe seat and the second pipe seat by setting a fixing rod, a fixing block, a through hole, etc., and adds a nut for reinforcement. The elastic force of the spring and the tightening effect of the nut are used to ensure that the sealing gasket is stably installed and not easy to fall off, thereby improving the stability and reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a sealing pressure adjustable mechanical sealing device proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the separation structure of the overall components of a sealing pressure adjustable mechanical sealing device proposed by the present invention;

[0026] Figure 3 This is a schematic diagram of the overall cross-sectional structure of a sealing pressure adjustable mechanical sealing device proposed by the utility model.

[0027] In the picture:

[0028] 1. First pipe seat; 2. Arc groove; 3. Spring; 4. Movable collar; 5. Connecting block; 6. Fixing rod; 7. Screw groove; 8. Nut; 9. Sealing washer; 10. Second pipe seat; 11. Fixing collar; 12. Fixing block; 13. Through hole. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Reference Figure 1-Figure 3 A sealing pressure adjustable mechanical sealing device includes a first pipe seat 1 and a second pipe seat 10. The outer portion of the first pipe seat 1 is slidably sleeved with a movable collar 4, and the outer portion of the second pipe seat 10 is fixedly sleeved with a fixed collar 11. The fixed collar 11 is spliced ​​with the movable collar 4. A sealing gasket 9 is clamped at the splicing portion of the first pipe seat 1 and the second pipe seat 10.

[0031] It also includes a fixing piece, which is used to splice and fix the first pipe seat 1 and the second pipe seat 10.

[0032] Furthermore, the inner walls of the first pipe seat 1 and the second pipe seat 10 are respectively provided with arcuate grooves 2 for engaging with the sealing gasket 9. Through the design of the arcuate grooves 2, the sealing gasket 9 can be more firmly fixed at the connection, thereby improving the sealing effect.

[0033] Furthermore, the fixing member includes a spring 3, a connecting block 5, a fixing rod 6, a screw groove 7, and a nut 8. The spring 3 is fixed to the outer wall of the first pipe seat 1 and the inner wall of the movable collar 4. Multiple springs 3 are arranged in a circumferential distribution. The spring 3 provides elastic force to help the movable collar 4 slide on the first pipe seat 1 and maintain a certain tension to ensure the stability of the connection. The connecting block 5 is relatively fixed to the upper and lower sides of the movable collar 4. The fixing rod 6 is on the connecting block 5. The screw groove 7 is provided on the fixing rod 6. The nut 8 is threadedly sleeved on the fixing rod 6. The fixing rod 6 is fixed between the connecting block 5 and the fixing block 12 through a threaded connection, thereby achieving a stable connection structure.

[0034] Furthermore, the fixing member includes a fixing block 12 and a through hole 13. The fixing block 12 is relatively fixed to the upper and lower sides of the fixing collar 11. The through hole 13 is formed on the fixing block 12. The through hole 13 allows the fixing rod 6 to pass through and cooperates with the screw groove 7 and the nut 8 to achieve a fixed connection between the movable collar 4 and the fixing collar 11.

[0035] Furthermore, the fixing rod 6 is inserted into the through hole 13, and the diameter of the fixing rod 6 is smaller than the diameter of the through hole 13. This arrangement allows the fixing rod 6 to be easily inserted and provides the necessary space to accommodate the compression and release of the spring 3.

[0036] Furthermore, annular outward protrusions are provided on both sides of the sealing gasket 9 , and the annular outward protrusions on both sides of the sealing gasket 9 match with the arc-shaped groove 2 .

[0037] The functional principle of this utility model can be explained through the following operation modes:

[0038] First, manually pull the movable collar 4 to slide along the outer wall of the first pipe seat 1. During the sliding process, the movable collar 4 will squeeze the spring 3 to generate a certain elastic force. When the movable collar 4 slides down to the vicinity of the splicing interface, the sealing gasket 9 is inserted into the connection between the first pipe seat 1 and the second pipe seat 10. Its outward protrusion is embedded in the annular groove and clamped with it to ensure that the outward protrusion of the sealing gasket 9 is completely embedded in the annular groove on the inner wall of the pipe seat to achieve a tight fit. The spring 3 is used to provide an elastic force to keep the movable collar 4 in the appropriate position so that it fits tightly on the first pipe seat 1. At this time, the sealing gasket 9 has been firmly clamped between the pipe seats. 4, and then the nut 8 is put on the fixing rod 6 and the nut 8 is rotated to make it fit with the screw groove 7 on the fixing rod 6. The nut 8 is continued to be rotated until it fits to the side wall of the fixing block 12. The movable collar 4 is tightly connected to the fixed collar 11 through the tightening action of the nut 8. At this time, the sealing connection between the first pipe seat 1 and the second pipe seat 10 is completed, and the sealing gasket 9 is stably installed at the connection, so that the sealing gasket 9 is stably installed and not easy to fall off.

[0039] To adjust the sealing pressure during use, use a tool to twist nut 8 outward to loosen it. During this process, the connection between fixed rod 6 and fixed block 12 will gradually loosen. As needed, push or pull the movable collar 4 to slide it along first pipe holder 1. During this process, spring 3 is squeezed or released, adjusting the compression force. By adjusting the position of movable collar 4, the compression force between the sealing gasket and first and second pipe holders 1, 10 can be varied. To increase the compression force, push movable collar 4 toward fixed collar 11. To decrease the compression force, pull movable collar 4 away from fixed collar 11. After adjustment, rotate nut 8 again to secure it against threaded groove 7 on fixed rod 6. Ensure that nut 8 is fully engaged with the sidewall of fixed block 12 to secure the position of movable collar 4. This allows the sealing pressure to be adjusted as needed, thus adapting to the sealing requirements of different media, temperatures, and pressures.

[0040] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sealing pressure adjustable mechanical sealing device, comprising a first pipe seat (1) and a second pipe seat (10), characterized in that: The first pipe seat (1) is slidably sleeved on the outside with a movable collar (4), the second pipe seat (10) is fixedly sleeved on the outside with a fixed collar (11), the fixed collar (11) is spliced ​​with the movable collar (4), and a sealing gasket (9) is clamped at the splicing point of the first pipe seat (1) and the second pipe seat (10); Also includes: A fixing member, the fixing member is used for splicing and fixing the first pipe seat (1) and the second pipe seat (10).

2. The sealing pressure adjustable mechanical sealing device according to claim 1, characterized in that: The inner walls of the first pipe seat (1) and the second pipe seat (10) are respectively provided with arc-shaped grooves (2) for engaging with the sealing gasket (9).

3. The sealing pressure adjustable mechanical sealing device according to claim 1, characterized in that: The fixing member includes: A spring (3), the spring (3) being fixed on the outer side wall of the first pipe seat (1) and the inner side wall of the movable collar (4); A connecting block (5), the connecting block (5) being relatively fixed on the upper and lower sides of the movable collar (4); A fixing rod (6), the fixing rod (6) being on the connecting block (5); a screw groove (7), the screw groove (7) being provided on the fixing rod (6); A nut (8), wherein the nut (8) is threadedly sleeved on the fixing rod (6).

4. The sealing pressure adjustable mechanical sealing device according to claim 3, characterized in that: The fixing member further comprises: A fixing block (12), the fixing block (12) being relatively fixed on the upper and lower sides of the fixing collar (11); A through hole (13), wherein the through hole (13) is provided on the fixing block (12).

5. The sealing pressure adjustable mechanical sealing device according to claim 4, characterized in that: The fixing rod (6) is inserted into the through hole (13), and the diameter of the fixing rod (6) is smaller than the diameter of the through hole (13).

6. The sealing pressure adjustable mechanical sealing device according to claim 2, characterized in that: Annular outward protrusions are provided on both sides of the sealing gasket (9), and the annular outward protrusions on both sides of the sealing gasket (9) cooperate with the arc-shaped groove (2).

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