Pump mechanical seal auxiliary system convenient to maintain

Abstract

The utility model relates to the technical field of mechanical sealing, in particular to a pump mechanical sealing auxiliary system convenient to maintain, and adopts the technical scheme that the pump mechanical sealing auxiliary system comprises a bottom supporting piece, an inner pipe is communicated and mounted on the upper end face of the bottom supporting piece, and a multi-stage rubber sealing assembly is arranged at the joint of the inner pipe and the bottom supporting piece; a middle supporting ring is arranged at the bottom of the outer side of the inner pipe, a tensioning adjusting piece is arranged at the top of the middle supporting ring, a rotating piece is arranged at the top of the tensioning adjusting piece, a plurality of embedding grooves are evenly formed in the outer side of the upper end face of the bottom supporting piece in the circumferential direction, and adjusting assemblies are fixedly arranged in the embedding grooves correspondingly. The bottom supporting piece is connected with the tensioning adjusting piece in an adjustable mode through the adjusting assembly. A positioning ring is rotatably arranged on the inner side of the middle supporting ring, and threaded holes are formed in the circumferential direction of the positioning ring and are in threaded connection with countersunk bolts. The device has the advantages of being convenient to maintain and easy and convenient to disassemble and assemble.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, specifically to an auxiliary system for pump mechanical seals that is easy to maintain. Background Technology

[0002] Preventing fluid leakage is crucial during the operation of pumps, leading to the development of mechanical seals for pumps. As a precision and complex mechanical component, mechanical seals are widely used in various types of pumps, becoming a key component in ensuring the normal operation of pumps.

[0003] Extensive research revealed CN222122235U, which discloses a mechanical seal structure for a multiphase pump. The structure includes a rotating component, a stationary component, and a sealing assembly. These components together form a sealing cavity. The seal also includes a spiral sleeve fitted around the rotating component and arranged coaxially with it. The spiral sleeve is located inside the sealing cavity and rotates synchronously with the rotating component. In this prior art device, the rotational movement of the spiral sleeve provides the driving force for the flow of the sealing fluid, enabling the fluid to circulate automatically and carry away heat generated at the sealing end face. Furthermore, the cooling effect of the sealing auxiliary system reduces the temperature of the sealing fluid, thereby controlling and maintaining its pressure.

[0004] However, the aforementioned devices still suffer from inconvenient disassembly and maintenance during use. Specifically, when the sealing system, inlet channel, outlet channel, or sealing cavity malfunctions, the interconnectedness of the components and the complex overall structure make it difficult to quickly separate and repair them without damaging the overall structure. This results in cumbersome disassembly and assembly procedures, reduced maintenance efficiency, and increased equipment downtime. Therefore, a pump mechanical seal auxiliary system designed for easier maintenance is proposed to address these issues. Utility Model Content

[0005] The purpose of this utility model is to provide an auxiliary system for pump mechanical seals that is easy to maintain. It has the advantages of easy maintenance and simple disassembly and assembly, and solves the problem that when existing auxiliary systems for pump mechanical seals fail, the interconnected components and complex overall structure make it difficult to quickly separate the components for repair without damaging the overall structure, resulting in cumbersome disassembly and assembly steps, low maintenance efficiency, and increased equipment downtime.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pump mechanical seal auxiliary system that is easy to maintain, including a bottom support component. An inner tube is installed on the upper end face of the bottom support component. A multi-stage rubber sealing assembly is provided at the connection between the inner tube and the bottom support component. A middle support ring is provided at the bottom outer side of the inner tube. A tension adjustment component is provided at the top of the middle support ring. A rotating component is provided at the top of the tension adjustment component. Multiple insertion slots are evenly opened circumferentially on the outer side of the upper end face of the bottom support component. An adjustment component is fixedly installed in each insertion slot. The bottom support component forms an adjustable connection with the tension adjustment component through the adjustment component.

[0007] A positioning ring is rotatably provided on the inner side of the central support ring. The positioning ring has a threaded hole in the circumference and is threaded with a countersunk bolt. The shank of the countersunk bolt extends through the positioning ring and forms an abutment fit with the outer wall of the inner tube, but does not form a fixed connection.

[0008] Preferably, a top limiting member is fixedly provided at the top of the inner tube. The top limiting member is fixedly connected to the top of the inner tube by fasteners. The bottom surface of the top limiting member and the top surface of the rotating member form a sliding contact fit. An annular sealing groove is opened at the bottom of the inner wall of the inner tube, and an elastic sealing ring is embedded in the sealing groove.

[0009] In the design, a top limiting component is fixedly installed at the top of the inner tube and fixedly connected to the top of the inner tube with fasteners to effectively limit the axial displacement of the rotating component and ensure the stability of the rotating component during operation. At the same time, an elastic sealing ring is embedded in the annular sealing groove opened at the bottom of the inner wall of the inner tube to further enhance the sealing performance of the inner tube and reduce the risk of fluid leakage.

[0010] Preferably, the upper and lower end faces of the tension adjustment member are respectively provided with annular mounting grooves, and the tension adjustment member can be vertically displaced along the axial direction of the adjustment assembly.

[0011] In the design, annular mounting grooves are opened on the upper and lower end faces of the tension adjustment component to facilitate the connection of related components and meet different installation requirements. In addition, the tension adjustment component can be vertically displaced along the axis of the adjustment component to achieve flexible adjustment of the tension of the entire system to adapt to the sealing requirements under different working conditions.

[0012] Preferably, a bearing ring is provided on the inner circumference of the rotating component, and the rotating component is connected to the outer wall of the inner tube through the bearing ring to form a rotating pair.

[0013] In the design, by setting a bearing ring on the inner circumference of the rotating component and connecting the rotating component with the outer wall of the inner tube through the bearing ring, the rotating component can rotate smoothly around the outer wall of the inner tube, reducing frictional resistance during rotation and improving the stability and efficiency of the system operation.

[0014] Preferably, the adjusting assembly includes a bolt and a nut. The bolt is fixedly installed in the mounting groove of the bottom support. The upper part of the bolt passes through the tension adjusting component and the nut in sequence, and the nut and the bolt form a threaded engagement.

[0015] In the design, the adjustment component is set to include a bolt and a nut. The bolt is fixed in the mounting groove of the bottom support, and the upper part of the bolt passes through the tension adjustment component and the nut in sequence. The nut and the bolt form a threaded engagement, so that the maximum vertical height of the tension adjustment component can be precisely controlled by rotating the nut.

[0016] Preferably, a multi-stage rubber sealing assembly can be rotatably provided on the inner side of the central support ring, and the multi-stage rubber sealing assembly is rotatably provided on the outer periphery of the inner tube above the positioning ring.

[0017] In the design, a multi-stage rubber sealing assembly is rotatably installed inside the central support ring and positioned on the outer periphery of the inner tube above the positioning ring. This further enhances the sealing effect between the inner tube and the outside. The rotatable design of the multi-stage rubber sealing assembly better accommodates the relative movement that may occur between the inner tube and other components, reducing wear on the seals and extending their service life.

[0018] Preferably, the positioning ring has a plurality of spring mounting holes evenly distributed along its circumference, and a connecting spring is respectively provided in each spring mounting hole. The upper end of the connecting spring is elastically connected to the bottom surface of the multi-stage rubber sealing assembly above the positioning ring, and its lower end is elastically connected to the top surface of the multi-stage rubber sealing assembly on the bottom support. Insert plates are respectively provided on the upper and lower end faces of the positioning ring, and the positioning ring forms an insertion fit with the upper and lower adjacent multi-stage rubber sealing assemblies through the insert plates.

[0019] In the design, multiple spring mounting holes are evenly distributed circumferentially on the positioning ring, and connecting springs are installed in each hole to elastically connect the multi-stage rubber sealing components on the upper and lower supports of the positioning ring. Simultaneously, the insert plates on the upper and lower end faces of the positioning ring form an interlocking fit with the adjacent multi-stage rubber sealing components, achieving stable fixation of the multi-stage rubber sealing components. The elasticity of the connecting springs can buffer vibrations and impacts during system operation, improving the reliability and stability of the sealing system.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This invention features a uniformly distributed circumferentially recessed groove on the outer side of the upper surface of the bottom support member and an adjustment component within the groove, enabling an adjustable connection between the bottom support member and the tension adjustment member. During maintenance, the tension adjustment member and the bottom support member can be quickly separated by simply operating the adjustment component, such as rotating the nut, thus simplifying the disassembly steps during maintenance.

[0022] Meanwhile, the rotatable positioning ring on the inner side of the central support ring is abutted against but not fixedly connected to the outer wall of the inner tube via countersunk bolts. This allows for easy adjustment of the positioning ring's position during maintenance, facilitating the disassembly and repair of surrounding components, such as the multi-stage rubber sealing assembly. This solves the problem of complex component connections and difficulty in quick separation and repair in existing technologies, greatly improving maintenance efficiency and reducing equipment downtime. Furthermore, the independent design of the multi-stage rubber sealing assembly at the connection between the inner tube and the bottom support facilitates individual inspection and replacement during maintenance, eliminating the need for large-scale disassembly of the entire system. This further demonstrates the advantages of this invention: ease of maintenance and simple assembly / disassembly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0024] Figure 2 This is a frontal cross-sectional view of the present invention.

[0025] Figure 3 This is a schematic diagram of the connection structure between the bottom support and the tension adjustment component of this utility model;

[0026] Figure 4 This is a schematic diagram of the positioning ring structure of this utility model.

[0027] In the diagram: 1. Bottom support; 11. Adjustment assembly; 111. Bolt; 112. Nut; 2. Middle support ring; 21. Positioning ring; 22. Insert plate; 23. Connecting spring; 24. Countersunk bolt; 3. Tension adjustment component; 31. Mounting groove; 4. Rotating component; 41. Bearing ring; 5. Inner tube; 51. Sealing groove; 6. Top limiting component; 7. Multi-stage rubber sealing assembly. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1: As Figure 1, Figure 2 , Figure 3 and Figure 4 As shown, one embodiment of this utility model provides a pump mechanical seal auxiliary system that is easy to maintain, including a bottom support 1. An inner tube 5 is installed on the upper end face of the bottom support 1. A multi-stage rubber sealing assembly 7 is provided at the connection between the inner tube 5 and the bottom support 1. A middle support ring 2 is provided at the bottom of the outer side of the inner tube 5. A tension adjustment component 3 is provided at the top of the middle support ring 2. A rotating component 4 is provided at the top of the tension adjustment component 3. Multiple embedding grooves are evenly opened along the circumference on the outer side of the upper end face of the bottom support 1. An adjustment component 11 is fixedly installed in each embedding groove. The bottom support 1 is connected to the tension adjustment component 3 through the adjustment component 11.

[0030] A positioning ring 21 is rotatably provided on the inner side of the central support ring 2. The positioning ring 21 has a threaded hole in the circumference and is threadedly connected to a countersunk bolt 24. The shank of the countersunk bolt 24 extends through the positioning ring 21 and forms an abutment fit with the outer wall of the inner tube 5, but does not form a fixed connection.

[0031] Specifically, by setting the mounting grooves evenly distributed circumferentially on the outer side of the upper end face of the bottom support 1 and the adjustment component 11 in the mounting groove, the bottom support 1 and the tension adjustment component 3 form an adjustable connection. During maintenance, the tension adjustment component 3 and the bottom support 1 can be quickly separated by simply operating the adjustment component 11, such as rotating the nut 112, thus simplifying the disassembly steps of the components during maintenance.

[0032] Meanwhile, the rotatable positioning ring 21 on the inner side of the central support ring 2 is abutted against but not fixedly connected to the outer wall of the inner tube 5 via countersunk bolts 24. During maintenance, the position of the positioning ring 21 can be easily adjusted, facilitating the disassembly and repair of surrounding components, such as the multi-stage rubber sealing assembly 7. This solves the problem of complex component connections and difficulty in quick separation and repair in existing technologies, greatly improving maintenance efficiency and reducing equipment downtime. Furthermore, the independent configuration of the multi-stage rubber sealing assembly 7 at the connection between the inner tube 5 and the bottom support 1 allows for separate inspection and replacement during maintenance, eliminating the need for large-scale disassembly of the entire system. This further demonstrates the advantages of this invention: ease of maintenance and simple assembly / disassembly.

[0033] Example 2: To improve system stability and sealing, such as Figure 1 and Figure 2 As shown, in this embodiment, a top limiting member 6 is fixedly provided at the top of the inner tube 5. The top limiting member 6 is fixedly connected to the top of the inner tube 5 by fasteners. The bottom surface of the top limiting member 6 and the top surface of the rotating member 4 form a sliding contact fit. An annular sealing groove 51 is opened at the bottom of the inner wall of the inner tube 5, and an elastic sealing ring is embedded in the sealing groove 51.

[0034] In the design, by fixing a top limiting member 6 to the top of the inner tube 5 and fixing it to the top of the inner tube 5 with fasteners, the axial displacement of the rotating part 4 is effectively limited, ensuring the stability of the rotating part 4 during operation. At the same time, by using the annular sealing groove 51 opened at the bottom of the inner wall of the inner tube 5 to embed an elastic sealing ring, the sealing performance of the inner tube 5 is further enhanced, reducing the risk of fluid leakage.

[0035] Furthermore, the upper and lower end faces of the tension adjustment component 3 are respectively provided with annular mounting grooves 31, and the tension adjustment component 3 can be vertically displaced along the axial direction of the adjustment assembly 11.

[0036] In the design, by opening annular mounting grooves 31 on the upper and lower end faces of the tension adjustment component 3, it is possible to facilitate the connection of related components and meet different installation requirements; in addition, the tension adjustment component 3 can be vertically displaced along the axis of the adjustment assembly 11 to achieve flexible adjustment of the tension of the entire system to adapt to the sealing requirements under different working conditions.

[0037] Furthermore, a bearing ring 41 is provided on the inner circumference of the rotating component 4, and the rotating component 4 is connected to the outer wall of the inner tube 5 through the bearing ring 41 to form a rotating pair.

[0038] In the design, by setting a bearing ring 41 on the inner circumference of the rotating part 4 and connecting the rotating part 4 with the outer wall of the inner tube 5 through the bearing ring 41 to form a rotating pair, the rotating part 4 can rotate smoothly around the outer wall of the inner tube 5, reducing the frictional resistance during the rotation process and improving the stability and efficiency of the system operation.

[0039] Furthermore, the adjusting assembly 11 includes a bolt 111 and a nut 112. The bolt 111 is fixedly installed in the mounting groove of the bottom support 1. The upper part of the bolt 111 passes through the tension adjusting component 3 and the nut 112 in sequence. The nut 112 and the bolt 111 form a threaded engagement.

[0040] In the design, the adjusting component 11 is configured to include a bolt 111 and a nut 112. The bolt 111 is fixed in the mounting groove of the bottom support 1, and the upper part of the bolt 111 passes through the tension adjusting component 3 and the nut 112 in sequence. The nut 112 and the bolt 111 form a threaded engagement, so that the maximum vertical height of the tension adjusting component 3 can be precisely controlled by rotating the nut 112.

[0041] Example 3: In order to enhance sealing performance and extend the service life of the seal, such as Figure 2 and Figure 4 As shown, in this embodiment, a multi-stage rubber sealing assembly 7 can also be rotatably provided on the inner side of the central support ring 2. The multi-stage rubber sealing assembly 7 is rotatably provided on the outer periphery of the inner tube 5 above the positioning ring 21.

[0042] In the design, a multi-stage rubber sealing assembly 7 is rotatably arranged inside the central support ring 2 and positioned on the outer periphery of the inner tube 5 above the positioning ring 21. This further enhances the sealing effect between the inner tube 5 and the outside. The rotatable design of the multi-stage rubber sealing assembly 7 can better adapt to the relative movement that may exist between the inner tube 5 and other components, reduce the wear of the seals, and extend the service life of the seals.

[0043] Furthermore, the positioning ring 21 has multiple spring mounting holes evenly distributed along its circumference. Each spring mounting hole is equipped with a connecting spring 23. The upper end of the connecting spring 23 is elastically connected to the bottom surface of the multi-stage rubber sealing assembly 7 above the positioning ring 21, and its lower end is elastically connected to the top surface of the multi-stage rubber sealing assembly 7 on the bottom support 1. The upper and lower end faces of the positioning ring 21 are respectively equipped with insert plates 22. The positioning ring 21 forms an insertion fit with the adjacent multi-stage rubber sealing assemblies 7 through the insert plates 22.

[0044] In the design, multiple spring mounting holes are evenly distributed circumferentially on the positioning ring 21, and connecting springs 23 are installed in each hole to elastically connect the multi-stage rubber sealing components 7 on the upper and lower support members 1 of the positioning ring 21. At the same time, the insert plates 22 on the upper and lower end faces of the positioning ring 21 form an insertion fit with the adjacent multi-stage rubber sealing components 7 to achieve stable fixation of the multi-stage rubber sealing components 7. The elastic effect of the connecting springs 23 can buffer the vibration and impact during the operation of the system, thereby improving the reliability and stability of the sealing system.

[0045] When this utility model is used, the inner tube 5 is connected and installed on the upper end face of the bottom support 1, and multiple rubber sealing components 7 are set at the connection to enhance the sealing effect.

[0046] A positioning ring 21 is installed inside the central support ring 2, allowing the positioning ring 21 to rotate inside. A countersunk bolt 24 is passed through the threaded hole on the positioning ring 21 and abuts against the outer wall of the inner tube 5. The relative position of the positioning ring 21 and the inner tube 5 is adjusted to complete the initial installation of the positioning ring 21. However, the countersunk bolt 24 is not fixedly connected to the inner tube 5 for subsequent adjustments.

[0047] Install the middle support ring 2 at the bottom of the outer side of the inner tube 5, and at this time the positioning ring 21 will also be installed in place.

[0048] The tension adjustment component 3 is installed on the top of the middle support ring 2 and connected to the bottom support component 1 through the adjustment assembly 11. The bolt 111 of the adjustment assembly 11 is fixed in the mounting groove of the bottom support component 1. The upper part of the bolt 111 passes through the tension adjustment component 3 and the nut 112 in sequence. By rotating the nut 112 and the threaded engagement of the bolt 111, the vertical displacement of the tension adjustment component 3 along the axis of the adjustment assembly 11 can be adjusted, thereby adjusting the tension of the entire system.

[0049] A bearing ring 41 is installed on the inner circumference of the rotating part 4, and then the rotating part 4 is installed on the top of the tension adjustment part 3, so that the rotating part 4 is connected to the outer wall of the inner tube 5 through the bearing ring 41 to form a rotating pair, ensuring that the rotating part 4 can rotate smoothly.

[0050] A connecting spring 23 is installed in the spring mounting hole on the positioning ring 21, and the multi-stage rubber sealing assembly 7 above the positioning ring 21 is elastically connected to the multi-stage rubber sealing assembly 7 on the bottom support 1 through the connecting spring 23. At the same time, the insert plates 22 on the upper and lower end faces of the positioning ring 21 are used to form an insertion fit with the upper and lower adjacent multi-stage rubber sealing assemblies 7 to further fix the position of the multi-stage rubber sealing assembly 7.

[0051] A multi-stage rubber sealing assembly 7 is installed inside the central support ring 2, positioning it on the outer periphery of the inner tube 5 above the positioning ring 21, thus completing the assembly of the entire sealing auxiliary system.

[0052] The top limiting member 6 is fixedly connected to the top of the inner tube 5 by fasteners, so that the bottom surface of the top limiting member 6 and the top surface of the rotating member 4 form a sliding contact fit, thereby limiting the axial displacement of the rotating member 4.

[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pump mechanical seal auxiliary system that is easy to maintain, comprising a bottom support (1), wherein an inner tube (5) is installed on the upper end face of the bottom support (1), a multi-stage rubber sealing assembly (7) is provided at the connection between the inner tube (5) and the bottom support (1), a middle support ring (2) is provided at the bottom outer side of the inner tube (5), a tension adjusting member (3) is provided at the top of the middle support ring (2), and a rotating member (4) is provided at the top of the tension adjusting member (3), characterized in that: The bottom support member (1) has multiple mounting slots evenly provided along the circumferential direction on the outer side of its upper end face. Each mounting slot is fixedly provided with an adjustment component (11). The bottom support member (1) is connected to the tension adjustment component (3) through the adjustment component (11). A positioning ring (21) is rotatably provided on the inner side of the central support ring (2). The positioning ring (21) has a threaded hole in the circumference and is threaded with a countersunk bolt (24). The shank of the countersunk bolt (24) extends through the positioning ring (21) and forms an abutment fit with the outer wall of the inner tube (5) but does not form a fixed connection.

2. The pump mechanical seal auxiliary system for easy maintenance according to claim 1, characterized in that, The top of the inner tube (5) is fixedly provided with a top limiting member (6), which is fixedly connected to the top of the inner tube (5) by fasteners. The bottom surface of the top limiting member (6) and the top surface of the rotating member (4) form a sliding contact fit. An annular sealing groove (51) is opened at the bottom of the inner wall of the inner tube (5), and an elastic sealing ring is embedded in the sealing groove (51).

3. The pump mechanical seal auxiliary system for easy maintenance according to claim 1, characterized in that, The upper and lower end faces of the tension adjustment component (3) are respectively provided with annular mounting grooves (31), and the tension adjustment component (3) can be vertically displaced along the axis of the adjustment assembly (11).

4. The pump mechanical seal auxiliary system for easy maintenance according to claim 1, characterized in that, The rotating part (4) is provided with a bearing ring (41) on its inner circumference, and the rotating part (4) is connected to the outer wall of the inner tube (5) through the bearing ring (41) to form a rotating pair.

5. The pump mechanical seal auxiliary system for easy maintenance according to claim 1, characterized in that, The adjustment assembly (11) includes a bolt (111) and a nut (112). The bolt (111) is fixedly installed in the mounting groove of the bottom support (1). The upper part of the bolt (111) passes through the tension adjustment component (3) and the nut (112) in sequence. The nut (112) and the bolt (111) form a threaded engagement.

6. The pump mechanical seal auxiliary system for easy maintenance according to claim 1, characterized in that, The inner side of the central support ring (2) can also be rotatably provided with a multi-stage rubber sealing assembly (7), which is rotatably provided on the outer periphery of the inner tube (5) above the positioning ring (21).

7. The pump mechanical seal auxiliary system for easy maintenance according to claim 1, characterized in that, The positioning ring (21) has multiple spring mounting holes evenly distributed along its circumference. Each spring mounting hole is provided with a connecting spring (23). The upper end of the connecting spring (23) is elastically connected to the bottom surface of the multi-stage rubber sealing assembly (7) above the positioning ring (21), and its lower end is elastically connected to the top surface of the multi-stage rubber sealing assembly (7) on the bottom support (1). The upper and lower end faces of the positioning ring (21) are respectively provided with insert plates (22). The positioning ring (21) forms an insertion fit with the adjacent multi-stage rubber sealing assemblies (7) through the insert plates (22).

Images