Wave spring double-end-face mechanical seal

Abstract

The utility model provides a wave spring double-end-face mechanical seal, and belongs to the technical field of mechanical seals. Comprising a first mechanical seal and a second mechanical seal, the end, close to the second mechanical seal, of the first mechanical seal is in threaded connection with the second mechanical seal, and a movable ring and a sealing gasket are clamped to the outer wall of the first mechanical seal. The fixing pin on the movable ring is inserted into the square groove of the first mechanical seal, when the clamping block is extruded by the fixing pin, the clamping block moves deep into the circular groove, after the fixing pin is completely inserted into the square groove, the clamping block is not extruded, and the connecting block and the clamping block are pushed towards the fixing pin through the spring until the connecting block and the clamping block are clamped with the fixing pin. When disassembly is needed, only the rotating ring needs to be rotated, the connecting rope is driven to move through rotation of the rotating ring, then the connecting block and the clamping block are pulled to move towards the deep position of the circular groove, at the moment, the moving ring and the sealing gasket can be taken down, the convenience of disassembly and assembly of the moving ring and the sealing gasket is improved, and the working efficiency of the moving ring and the sealing gasket is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, and particularly relates to a corrugated spring double-end mechanical seal. Background Technique

[0002] A mechanical seal refers to a device that prevents fluid leakage, which is composed of at least a pair of end faces perpendicular to the rotation axis. Under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, and with the cooperation of auxiliary seals, the pair of end faces remain in contact and relatively slide.

[0003] When installing the existing mechanical seal, it is necessary to first install the moving ring and the gasket at one end of the mechanical seal, and then install the static ring and the gasket at the other end of the mechanical seal. When installing the moving ring and the static ring, the fixing bolts are used to fix the moving ring and the static ring on the mechanical seal through a special tool. Finally, the two ends of the mechanical seal are combined. Using a special tool to fix the moving ring and the static ring is not only time-consuming and laborious, but also increases the use burden of the staff. To address the above problems and defects, a corrugated spring double-end mechanical seal is urgently needed. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a corrugated spring double-end mechanical seal to solve the limitations that when installing the existing mechanical seal, it is necessary to first install the moving ring and the gasket at one end of the mechanical seal, and then install the static ring and the gasket at the other end of the mechanical seal. When installing the moving ring and the static ring, the fixing bolts are used to fix the moving ring and the static ring on the mechanical seal through a special tool. Finally, the two ends of the mechanical seal are combined. Using a special tool to fix the moving ring and the static ring is not only time-consuming and laborious, but also increases the use burden of the staff.

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] A corrugated spring double-end mechanical seal includes: a first mechanical seal and a second mechanical seal. One end of the first mechanical seal close to the second mechanical seal is threadedly connected to the second mechanical seal. A moving ring and a gasket are clamped on the outer wall of the first mechanical seal. A square groove is opened on one side of the first mechanical seal close to the moving ring. A circular groove is opened on the inner wall of the square groove. A spring is fixedly assembled on the inner wall of the circular groove. One end of the spring away from the circular groove is fixedly assembled with a connecting block. One side of the connecting block away from the spring is fixedly assembled with a clamping block. A fixing pin is clamped on the outer wall of the clamping block. One side of the fixing pin away from the square groove is fixedly connected to the moving ring. A connecting rope is fixedly connected to one side of the connecting block close to the spring. A rotating ring is rotatably connected to the outer wall of the first mechanical seal. One end of the connecting rope away from the connecting block is fixedly connected to the rotating ring.

[0007] Preferably, an annular groove is formed on one side of the moving ring close to the square groove, and a rubber pad is fixedly assembled on the inner wall of the annular groove.

[0008] Preferably, a guiding groove is formed on one side of the first mechanical seal close to the moving ring. A guiding block is clamped on the inner wall of the guiding groove. One side of the guiding block away from the guiding groove is fixedly connected to the moving ring, and both ends of the guiding block are designed with rounded corners.

[0009] Preferably, anti-slip strips are fixedly assembled on the outer wall of the rotating ring, and the number of the anti-slip strips is several.

[0010] Preferably, the cross-sectional shape of the clamping block is a right trapezoid, and the hypotenuse of the clamping block is located on the side close to the fixing pin.

[0011] Preferably, the number of the springs, connecting blocks, clamping blocks and fixing pins is six groups, and the six groups of springs, connecting blocks, clamping blocks and fixing pins are evenly distributed on the peripheral side of the first mechanical seal.

[0012] Compared with the prior art, the utility model has at least the following beneficial effects:

[0013] 1. In the above solution, the fixing pin on the moving ring is inserted into the square groove of the first mechanical seal. When the clamping block is squeezed by the fixing pin, the clamping block moves deeper into the circular groove. When the fixing pin is completely inserted into the square groove, the clamping block loses the extrusion. The spring pushes the connecting block and the clamping block towards the fixing pin until they are clamped with the fixing pin, and the installation of the moving ring and the gasket is easily completed. When disassembly is required, only the rotating ring needs to be rotated. The rotation of the rotating ring drives the connecting rope to move, and then pulls the connecting block and the clamping block to move deeper into the circular groove. At this time, the moving ring and the gasket can be removed, which is beneficial to improving the convenience of disassembly and assembly of the moving ring and the gasket and improving its working efficiency.

[0014] 2. In the above solution, by arranging the guiding groove and the guiding block, it is beneficial to guide the installation of the moving ring by first connecting the guiding block with the guiding groove when installing the moving ring, thereby improving the convenience of installing the moving ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0016] Figure 1 is a three-dimensional structural schematic diagram of a waveform spring double-end mechanical seal;

[0017] Figure 2 is a three-dimensional structural schematic diagram of a first perspective section of a waveform spring double-end mechanical seal;

[0018] Figure 3It is a three-dimensional structural schematic diagram of the second perspective section of a corrugated spring double-end mechanical seal;

[0019] Figure 4 is Figure 2 The enlarged three-dimensional structural schematic diagram at position A in

[0020] Accompanying drawings

[0021] 1. Mechanical seal one; 101. Square groove; 102. Round groove; 103. Spring; 104. Connecting block; 105. Clamping block; 106. Fixed pin; 107. Connecting rope; 108. Rotating ring; 109. Anti-slip strip;

[0022] 2. Mechanical seal two; 3. Moving ring; 4. Sealing gasket; 5. Annular groove; 6. Rubber gasket; 7. Guide groove; 8. Guide block.

[0023] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications made are still included within the scope of the appended claims. Specific embodiments

[0024] The following will describe in detail a corrugated spring double-end mechanical seal provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also implement them in other alternative ways; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0025] Such as Figure 1 、 Figure 2 and Figure 4As shown in the figure, an embodiment of the present utility model provides a double-end mechanical seal with a waveform spring, including: a mechanical seal one 1 and a mechanical seal two 2. One end of the mechanical seal one 1 close to the mechanical seal two 2 is threadedly connected to the mechanical seal two 2. A dynamic ring 3 and a sealing gasket 4 are clamped on the outer wall of the mechanical seal one 1. A square groove 101 is opened on one side of the mechanical seal one 1 close to the dynamic ring 3. A circular groove 102 is opened on the inner wall of the square groove 101. A spring 103 providing elastic force is fixedly assembled on the inner wall of the circular groove 102. One end of the spring 103 away from the circular groove 102 is fixedly assembled with a connecting block 104. One side of the connecting block 104 away from the spring 103 is fixedly assembled with a clamping block 105. A fixing pin 106 is clamped on the outer wall of the clamping block 105. One side of the fixing pin 106 away from the square groove 101 is fixedly connected to the dynamic ring 3. A connecting rope 107 is fixedly connected to one side of the connecting block 104 close to the spring 103. A rotating ring 108 is rotatably connected to the outer wall of the mechanical seal one 1. One end of the connecting rope 107 away from the connecting block 104 is fixedly connected to the rotating ring 108. The cross-sectional shape of the clamping block 105 is a right trapezoid, and the hypotenuse of the clamping block 105 is located on the side close to the fixing pin 106. By limiting the clamping block 105, it is beneficial to improve the smoothness during the installation of the fixing pin 106, thereby facilitating the installation of the dynamic ring 3 and the sealing gasket 4.

[0026] As Figure 3 and Figure 4 shown, an annular groove 5 is opened on one side of the dynamic ring 3 close to the square groove 101. A rubber gasket 6 is fixedly assembled on the inner wall of the annular groove 5. By providing the annular groove 5 and the rubber gasket 6, it is beneficial to fill the space at the connection between the mechanical seal one 1 and the dynamic ring 3 with the rubber gasket 6 after the dynamic ring 3 is installed, thereby improving the stability and firmness of the connection between the mechanical seal one 1 and the dynamic ring 3.

[0027] As Figure 3 shown, a guiding groove 7 is opened on one side of the mechanical seal one 1 close to the dynamic ring 3. A guiding block 8 is clamped on the inner wall of the guiding groove 7. One side of the guiding block 8 away from the guiding groove 7 is fixedly connected to the dynamic ring 3, and both ends of the guiding block 8 are designed with rounded corners. By providing the guiding groove 7 and the guiding block 8, it is beneficial to first connect the guiding block 8 with the guiding groove 7 during the installation of the dynamic ring 3, thereby guiding the installation of the dynamic ring 3 and improving the convenience of installing the dynamic ring 3.

[0028] As Figure 1 and Figure 3 shown, anti-slip strips 109 are fixedly assembled on the outer wall of the rotating ring 108, and the number of the anti-slip strips 109 is several. By providing the anti-slip strips 109, it is beneficial to increase the friction between the outer wall of the rotating ring 108 and the hands of the staff, thereby improving the convenience for the staff to rotate the rotating ring 108.

[0029] As Figure 2 and Figure 3, the number of the springs 103, the connecting blocks 104, the clamping blocks 105 and the fixing pins 106 is six groups, and the six groups of springs 103, connecting blocks 104, clamping blocks 105 and fixing pins 106 are evenly distributed on the circumferential side of the mechanical seal 1. By limiting the number and positions of the springs 103, connecting blocks 104, clamping blocks 105 and fixing pins 106, it is beneficial to improve the firmness of the installation of the moving ring 3 and the gasket 4.

[0030] In the technical solution provided by the present utility model, during operation, the fixing pin 106 on the moving ring 3 is inserted into the square groove 101 of the mechanical seal 1. When the clamping block 105 is squeezed by the fixing pin 106, the clamping block 105 moves deeper into the circular groove 102. After the fixing pin 106 is completely inserted into the square groove 101, the clamping block 105 loses the extrusion, and the spring 103 pushes the connecting block 104 and the clamping block 105 towards the fixing pin 106 until they are clamped with the fixing pin 106, thus easily completing the installation of the moving ring 3 and the gasket 4. When disassembly is required, only the rotating ring 108 needs to be rotated. The rotation of the rotating ring 108 drives the connecting rope 107 to move, thereby pulling the connecting block 104 and the clamping block 105 to move deeper into the circular groove 102. At this time, the moving ring 3 and the gasket 4 can be removed;

[0031] By providing the guiding groove 7 and the guiding block 8, it is beneficial to guide the installation of the moving ring 3 when installing the moving ring 3. First, the guiding block 8 is connected with the guiding groove 7, so as to guide the installation of the moving ring 3 and improve the convenience of installing the moving ring 3.

[0032] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A wave spring double-end mechanical seal, characterized in that: include: Mechanical seal one (1) and mechanical seal two (2), wherein one end of the mechanical seal one (1) close to the mechanical seal two (2) is threadedly connected to the mechanical seal two (2), and a moving ring (3) and a sealing gasket (4) are clamped on the outer wall of the mechanical seal one (1); A square groove (101) is provided on a side of the mechanical seal (1) close to the moving ring (3); a circular groove (102) is provided on an inner wall of the square groove (101); a spring (103) is fixedly mounted on the inner wall of the circular groove (102); a connecting block (104) is fixedly mounted on an end of the spring (103) away from the circular groove (102); a clamping block (105) is fixedly mounted on a side of the connecting block (104) away from the spring (103); a fixing pin (106) is clamped on an outer wall of the clamping block (105); and the fixing pin (106) is fixedly connected to the moving ring (3) on a side away from the square groove (101); A connecting rope (107) is fixedly connected to one side of the connecting block (104) close to the spring (103), a swivel (108) is rotatably connected to the outer wall of the mechanical seal 1 (1), and an end of the connecting rope (107) away from the connecting block (104) is fixedly connected to the swivel (108).

2. The wave spring double-end mechanical seal according to claim 1, characterized in that: An annular groove (5) is provided on one side of the movable ring (3) close to the square groove (101), and a rubber pad (6) is fixedly mounted on the inner wall of the annular groove (5).

3. The wave spring double-end mechanical seal according to claim 1, characterized in that: A guide groove (7) is provided on a side of the mechanical seal 1 (1) close to the moving ring (3); a guide block (8) is clamped on the inner wall of the guide groove (7); a side of the guide block (8) away from the guide groove (7) is fixedly connected to the moving ring (3), and both ends of the guide block (8) are designed with rounded corners.

4. The wave spring double-end mechanical seal according to claim 1, characterized in that: The outer wall of the rotating ring (108) is fixedly equipped with anti-slip strips (109), and the number of the anti-slip strips (109) is several.

5. The wave spring double-end mechanical seal according to claim 1, characterized in that: The cross-sectional shape of the clamping block (105) is a right-angled trapezoid, and the hypotenuse of the clamping block (105) is located on a side close to the fixing pin (106).

6. The wave spring double-end mechanical seal according to claim 1, characterized in that: The number of the spring (103), the connection block (104), the clamping block (105) and the fixing pin (106) is six groups, and the six groups of the spring (103), the connection block (104), the clamping block (105) and the fixing pin (106) are evenly distributed on the circumference of the mechanical seal (1).

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