Connecting and sealing device of pump

Abstract

The utility model relates to a pump connecting and sealing device which comprises a first connecting pipe fixedly connected to a pump body and a second connecting pipe fixedly connected to the end of a pipeline, one end of the second connecting pipe is coaxially and fixedly connected with an annular plug, a mounting groove is formed in the annular plug, and the annular plug is sleeved with a hollow O-shaped ring at the mounting groove. A groove allowing the hollow O-shaped ring to be embedded is formed in the first connecting pipe, a first sealing ring is arranged at the joint of the second connecting pipe and the first connecting pipe, protruding rings are arranged at the opposite ends of the first connecting pipe and the second connecting pipe, and a fixing assembly used for locking the first connecting pipe and the second connecting pipe is arranged between the two protruding rings. By means of the elastic deformation capacity of the hollow O-shaped ring, a tight sealing layer is formed and matched with the first sealing ring, and the problem that in a pump system needing high performance and high reliability, a single sealing ring may have many defects, and the sealing performance and the overall reliability of the system are affected is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of sealing structures, and in particular to a connection sealing device for a pump. Background Art

[0002] A pump is a mechanical device that transports liquid or gas from one place to another. It is widely used in many fields such as industry, agriculture, construction, and environmental protection.

[0003] In the related art, Chinese patent application number CN202323438362.2 proposes a multi-stage pipeline pump connection sealing structure, which includes a first connecting pipe provided on the pipeline pump body and a second connecting pipe fixedly connected to the end of the pipeline. The first connecting pipe and the second connecting pipe are coaxially arranged, and the end of the second connecting pipe close to the first connecting pipe is slidably inserted into the first connecting pipe. A plurality of mounting blocks are fixedly connected to the arcuate outer wall of the second connecting pipe. The mounting blocks are arranged around the axis of the second connecting pipe. A locking rod is rotatably connected to the mounting block. The end of the locking rod away from the mounting block is provided with a fixing assembly for fixing the locking rod to the first connecting pipe. This application has the effect of improving the sealing effect of the connection port of the multi-stage pipeline pump and the pipeline connection.

[0004] The above-mentioned related technologies have the following defects: when the pump is running for a long time, a single sealing ring may experience local stress concentration due to uneven force under the impact of the fluid, leading to faster fatigue and damage; and under long-term high-pressure environment, a single sealing ring may not be able to maintain a good sealing effect and is prone to leakage; therefore, in a pump system that requires high performance and high reliability, a single sealing ring may have many defects, affecting the sealing performance and overall reliability of the system. Utility Model Content

[0005] In order to improve the problem that a single sealing ring may have many defects in a pump system requiring high performance and high reliability, thereby affecting the sealing performance and overall reliability of the system, the present application provides a pump connection sealing device.

[0006] The present application provides a pump connection sealing device that adopts the following technical solution:

[0007] A pump connection and sealing device, comprising a first connecting pipe fixed to a pump body and a second connecting pipe fixed to an end of a pipeline, wherein an annular plug is coaxially fixed to an end of the second connecting pipe adjacent to the first connecting pipe, the annular plug having a mounting groove formed therein, a hollow O-ring embedded in the mounting groove of the annular plug, and a groove for embedding the hollow O-ring in the first connecting pipe;

[0008] A first sealing ring is provided at the junction of the second connecting pipe and the first connecting pipe, and a convex ring is provided at the opposite end of the first connecting pipe and the second connecting pipe. A fixing component for locking the first connecting pipe and the second connecting pipe is provided between the two convex rings.

[0009] Furthermore, the fixing assembly includes an inner screw barrel rotatably sleeved on one of the convex rings, and the inner screw barrel is threadedly sleeved on the outer periphery of the other convex ring.

[0010] Furthermore, the fixing assembly includes multiple sets of fixing bolts and fixing nuts, and multiple mounting holes are opened through the convex ring, and the multiple fixing bolts are arranged in a one-to-one correspondence with the multiple mounting holes.

[0011] Furthermore, a support is provided in the first connecting tube, and the annular plug is inserted into the first connecting tube and faces the support, and a second sealing ring is provided between the annular plug and the support.

[0012] Furthermore, the first sealing ring and the second sealing ring are fixedly connected to a plurality of protrusions at one end close to the second connecting tube, and the annular plug and the second connecting tube are provided with a plurality of sockets arranged in a one-to-one correspondence with the plurality of protrusions at one end close to the protrusions. When the protrusions are embedded in the sockets, the first sealing ring and the second sealing ring are fixed.

[0013] Furthermore, the annular plug and the second connecting pipe are both provided with chamfers at one end corresponding to the first sealing ring and the second sealing ring, and the first sealing ring and the second sealing ring are provided with arc-shaped parts adapted thereto at positions corresponding to the chamfers.

[0014] In summary, the beneficial technical effects of this application are:

[0015] When connecting the first and second connecting tubes, the hollow O-ring is first placed over the mounting groove of the annular plug. When the second connecting tube is docked with the first connecting tube, the hollow O-ring embeds into the groove within the first connecting tube. Once the hollow O-ring is fully embedded in the groove, its elastic deformation capacity fully fills the gap between the annular plug and the groove, forming a tight seal. Simultaneously, the first sealing ring also functions to further prevent fluid leakage from the junction. The two raised rings are then tightened by a fixing assembly, securing the first and second connecting tubes and ensuring the stability and tightness of the sealing device. This effectively improves the problem of a single sealing ring in pump systems requiring high performance and reliability, which can have numerous defects that affect the system's sealing performance and overall reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of an embodiment of the present application;

[0017] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0018] Figure 3 is a front view of an embodiment of the present application;

[0019] Figure 4 It is along Figure 3 Schematic diagram of the cross-sectional structure along line AA.

[0020] Explanation of the accompanying drawings: 1. First connecting pipe; 11. Groove; 12. Base; 2. Second connecting pipe; 21. First sealing ring; 22. Convex ring; 221. Fixing bolt; 222. Fixing nut; 223. Mounting hole; 23. Inner screw barrel; 3. Ring plug; 31. Mounting groove; 32. Hollow O-ring; 33. Second sealing ring; 4. Protrusion; 5. Socket; 6. Chamfer; 7. Arc-shaped portion. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0022] The embodiment of the present application discloses a connection sealing device for a pump. Figures 1 to 4 A pump connection and sealing device includes a first connecting pipe 1 fixed to the pump body and a second connecting pipe 2 fixed to the end of the pipeline. The second connecting pipe 2 is coaxially fixed with an annular plug 3 at one end near the first connecting pipe 1. The annular plug 3 is provided with a mounting groove 31, and a hollow O-ring 32 is embedded in the mounting groove 31 of the annular plug 3. The first connecting pipe 1 is provided with a groove 11 for the hollow O-ring 32 to be embedded. In the initial state, the thickness of the hollow O-ring 32 is greater than the sum of the groove depths of the mounting groove 31 and the groove 11. A first sealing ring 21 is provided at the intersection of the second connecting pipe 2 and the first connecting pipe 1. The first and second connecting pipes 1 and 2 are both provided with a protruding ring 22 at the opposite ends. A fixing component for locking the first and second connecting pipes 1 and 2 is provided between the two protruding rings 22.

[0023] Thus, when connecting the first connecting tube 1 and the second connecting tube 2, the hollow O-ring 32 is first embedded in the mounting groove 31 of the annular plug 3. When the second connecting tube 2 is docked with the first connecting tube 1, the hollow O-ring 32 is embedded in the groove 11 in the first connecting tube 1. After the hollow O-ring 32 is completely embedded in the groove 11, due to the elastic deformation ability of the hollow O-ring 32, it will fully fill the gap between the annular plug 3 and the groove 11, forming a tight sealing layer. At the same time, the first sealing ring 21 also plays a role, further preventing fluid from leaking from the junction. The two convex rings 22 are then locked by the fixing assembly, thereby fixing the first connecting tube 1 and the second connecting tube 2 and ensuring the stability and sealing of the sealing device. This effectively improves the problem that a single sealing ring may have many defects in a pump system that requires high performance and high reliability, affecting the sealing performance and overall reliability of the system.

[0024] Specific reference Figure 2 In one embodiment, the fixing assembly includes an inner threaded barrel 23 that is rotatably sleeved onto one of the raised rings 22. The inner threaded barrel 23 is then threadedly sleeved onto the outer circumference of the other raised ring 22. By rotating the inner threaded barrel 23 and threading it onto the outer circumference of the other raised ring 22, the two raised rings 22 in the pump connection and sealing device can be tightly locked and secured. This design not only enhances the sealing effect but also improves the stability and reliability of the connection.

[0025] In another possible embodiment, referring to Figure 1 The fixing assembly includes multiple sets of fixing bolts 221 and fixing nuts 222. The convex ring 22 is provided with multiple mounting holes 223, and the multiple fixing bolts 221 are arranged in a one-to-one correspondence with the multiple mounting holes 223. This arrangement can achieve a tight locking and fixation between the two convex rings 22 in the pump connection and sealing device, not only improving the stability and reliability of the connection, but also enhancing the sealing effect, ensuring the safety and efficiency of the pump during operation.

[0026] And, refer to Figure 3 and Figure 4 A base 12 is provided in the first connecting pipe 1 and the annular plug 3 is inserted into the first connecting pipe 1 and faces the base 12. A second sealing ring 33 is provided between the annular plug 3 and the base 12, which further enhances the sealing performance and stability of the sealing device.

[0027] At the same time, refer to Figure 3 and Figure 4 The first sealing ring 21 and the second sealing ring 33 are fixed with multiple protrusions 4 at one end close to the second connecting pipe 2, and the annular plug 3 and the second connecting pipe 2 corresponding to the protrusions 4 are provided with multiple sockets 5 arranged one-to-one corresponding to the multiple protrusions 4. When the protrusions 4 are inserted into the sockets 5, the first sealing ring 21 and the second sealing ring 33 are fixed.

[0028] The design of the protrusion 4 and the socket 5 makes the installation process of the first sealing ring 21 and the second sealing ring 33 simpler and faster. At the same time, through the cooperation of the protrusion 4 and the socket 5, the first sealing ring 21 and the second sealing ring 33 are reliably fixed. This fixing method is more stable than the traditional method of relying solely on the elastic deformation of a single sealing ring to maintain sealing. It not only improves the sealing effect, but also simplifies the installation process and enhances the adaptability and reliability of the device.

[0029] In addition, refer to Figure 3 and Figure 4 The annular plug 3 and the second connecting pipe 2 are both provided with chamfers 6 at one end corresponding to the first sealing ring 21 and the second sealing ring 33, and the first sealing ring 21 and the second sealing ring 33 are provided with arc portions 7 adapted thereto at the positions corresponding to the chamfers 6.

[0030] By providing chamfers 6 on the annular plug 3 and the second connecting pipe 2, and providing matching arc-shaped portions 7 on the first sealing ring 21 and the second sealing ring 33, the connection sealing device of the pump achieves a smoother installation process and a tighter sealing effect. This design detail not only improves the reliability and durability of the device, but also reduces maintenance costs and usage risks.

[0031] The implementation principle of the connection sealing device of a pump in the embodiment of the present application is as follows:

[0032] When connecting the first connecting tube 1 and the second connecting tube 2, the hollow O-ring 32 is first embedded in the mounting groove 31 of the annular plug 3. When the second connecting tube 2 is docked with the first connecting tube 1, the hollow O-ring 32 is embedded in the groove 11 in the first connecting tube 1. After the hollow O-ring 32 is completely embedded in the groove 11, due to the elastic deformation ability of the hollow O-ring 32, it will fully fill the gap between the annular plug 3 and the groove 11, forming a tight sealing layer. At the same time, the first sealing ring 21 also plays a role, further preventing fluid from leaking from the junction. The two convex rings 22 are then locked by the fixing assembly, thereby fixing the first connecting tube 1 and the second connecting tube 2 and ensuring the stability and sealing of the sealing device. This effectively improves the problem that a single sealing ring may have many defects in a pump system that requires high performance and high reliability, affecting the sealing performance and overall reliability of the system.

[0033] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A pump connection sealing device, comprising a first connection pipe (1) fixedly connected to a pump body and a second connection pipe (2) fixedly connected to an end of a pipeline, characterized in that: An annular plug (3) is coaxially fixedly connected to one end of the second connecting tube (2) close to the first connecting tube (1), the annular plug (3) is provided with a mounting groove (31), a hollow O-ring (32) is embedded in the mounting groove (31) of the annular plug (3), and a groove (11) for embedding the hollow O-ring (32) is provided in the first connecting tube (1); A first sealing ring (21) is provided at the junction of the second connecting tube (2) and the first connecting tube (1), and a convex ring (22) is provided at the opposite end of the first connecting tube (1) and the second connecting tube (2), and a fixing component for locking the first connecting tube (1) and the second connecting tube (2) is provided between the two convex rings (22).

2. A pump connection sealing device according to claim 1, characterized in that: The fixing assembly comprises an inner screw barrel (23) rotatably sleeved on one of the convex rings (22), and the inner screw barrel (23) is threadedly sleeved on the outer periphery of the other convex ring (22).

3. A pump connection sealing device according to claim 1, characterized in that: The fixing assembly comprises a plurality of sets of fixing bolts (221) and fixing nuts (222); a plurality of mounting holes (223) are formed through the convex ring (22); and the plurality of fixing bolts (221) and the plurality of mounting holes (223) are arranged in a one-to-one correspondence.

4. A pump connection sealing device according to claim 1, characterized in that: A support platform (12) is provided in the first connecting tube (1), and the annular plug (3) is inserted into the first connecting tube (1) and faces the support platform (12). A second sealing ring (33) is provided between the annular plug (3) and the support platform (12).

5. A pump connection and sealing device according to claim 4, characterized in that: The first sealing ring (21) and the second sealing ring (33) are both fixedly connected to a plurality of protrusions (4) at one end close to the second connecting tube (2); the annular plug (3) and the second connecting tube (2) are provided with a plurality of sockets (5) arranged in a one-to-one correspondence with the plurality of protrusions (4) at one end close to the protrusions (4); and when the protrusions (4) are inserted into the sockets (5), the first sealing ring (21) and the second sealing ring (33) are fixed.

6. A pump connection and sealing device according to claim 5, characterized in that: The annular plug (3) and the second connecting pipe (2) are both provided with chamfers (6) at one end corresponding to the first sealing ring (21) and the second sealing ring (33), and the first sealing ring (21) and the second sealing ring (33) are provided with arc-shaped portions (7) adapted thereto at locations corresponding to the chamfers (6).

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