Mechanical sealing structure of acid-resistant pump

Abstract

The utility model discloses a mechanical seal structure of an acid-proof pump, which relates to the technical field of acid-proof pumps and comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a water pump body, one end of the water pump body is fixedly connected with an end cover, one side of one end of the end cover is provided with a first ring groove, and the other side of one end of the end cover is provided with a second ring groove. Fixed abutting rings are fixedly connected to the inner walls of one sides of the first ring groove and the second ring groove, and movable abutting rings are fixedly connected to the inner walls of the other sides of the first ring groove and the second ring groove. By adopting the structure, the first ring groove and the second ring groove are formed in the end cover of the pump body, the first sealing ring block and the second sealing ring block are fixed on the pump cover, and after the pump cover is connected with the end cover, the sealing ring blocks and the ring grooves form a multi-channel sealing structure, so that the sealing reliability is enhanced, internal media can be effectively prevented from leaking out, and the service life of the pump is prolonged. And meanwhile, the stability of the pump body structure is enhanced, and stable operation of the pump body is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of acid-resistant pumps, and particularly relates to a mechanical seal structure of an acid-resistant pump. Background Technique

[0002] With the rapid development of fields such as the chemical industry, petroleum refining, metal smelting, and environmental protection treatment, the demand for corrosion-resistant and acid-resistant pumps is increasing day by day. An acid-resistant pump is a special type of pump that can operate stably in a strong acid environment. Sealing treatment is required between the pump body and the pump cover to ensure its normal operation and prevent medium leakage.

[0003] In current industrial applications, the traditional connection method between the pump body and the pump cover mainly relies on a flange plate for fastening, and a gasket is added at their connection to prevent medium leakage. However, although this sealing structure can play a leak-proof role to a certain extent, due to its relatively simple design principle, the sealing effect is not stable, and medium leakage is likely to occur. Content of the Utility Model

[0004] Aiming at the problems mentioned in the background technique, the purpose of the utility model is to provide a mechanical seal structure of an acid-resistant pump to solve the problems in the background technique.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions:

[0006] A mechanical seal structure of an acid-resistant pump, including a bottom plate, a water pump main body is fixedly connected to the upper end of the bottom plate, an end cover is fixedly connected to one end of the water pump main body, a first annular groove is opened on one side of one end of the end cover, a second annular groove is opened on the other side of one end of the end cover, fixed resisting rings are fixedly connected to the inner walls of one sides of the first annular groove and the second annular groove, moving resisting rings are fixedly connected to the inner walls of the other sides of the first annular groove and the second annular groove, a push rod is fixedly connected to one end of the moving resisting ring, the push rod is slidably connected inside the end cover, a push block is fixedly connected to the end of the push rod away from the moving resisting ring, the push block is of an arc-shaped structure, insertion slots are opened on both sides of one end of the end cover, the push block is movably connected inside the insertion slots, an insertion block is inserted inside the insertion slots, the insertion block is movably connected to the push block, a pump cover is fixedly connected to the end of the insertion block away from the end cover, a first sealing ring block is fixedly connected to one side of one end of the pump cover, and the first sealing ring block is movably connected to the first annular groove, a second sealing ring block is fixedly connected to the other side of one end of the pump cover, and the second sealing ring block is movably connected to the second annular groove.

[0007] As a preferred technical solution, a first moving block is fixedly connected to one side of the push rod. The first moving block is slidably connected inside, and both sides of one end of the first moving block are fixedly connected with first springs. One end of the first spring is fixedly connected to the inside of the end cover.

[0008] As a preferred technical solution, guide blocks are fixedly connected to both sides of the first moving block. Guide grooves are formed on both sides inside the end cover, and the guide blocks are slidably connected with the guide grooves.

[0009] As a preferred technical solution, first fixing blocks are fixedly connected to both sides of the end cover. Positioning holes are formed inside the first fixing blocks. Second fixing blocks are fixedly connected to both sides of the pump cover. A positioning rod is fixedly connected to one end of the second fixing block. The positioning rod is movably connected with the positioning hole. A fixing component is arranged on one side of the first fixing block.

[0010] As a preferred technical solution, the fixing component includes a lock hole. The lock hole is formed inside the positioning rod. A lock rod is movably connected inside the lock hole. One end of the lock rod is fixedly connected with a pull rod. One side of the pull rod is slidably connected with the first fixing block. A second moving block is fixedly connected to one side of the pull rod. The second moving block is slidably connected inside the first fixing block. Both sides of one end of the second moving block are fixedly connected with second springs. One end of the second spring is fixedly connected to the inside of the first fixing block.

[0011] In summary, the present utility model mainly has the following beneficial effects:

[0012] First, in the present utility model, by providing a first annular groove and a second annular groove on the pump body end cover, and fixing a first sealing ring block and a second sealing ring block on the pump cover, after the pump cover is connected to the end cover, these sealing ring blocks form multiple sealing structures with the annular grooves, enhancing the reliability of the seal, effectively blocking the leakage of internal media, reducing the risk of leakage, and at the same time strengthening the stability of the pump body structure to ensure the stable operation of the pump body.

[0013] Second, in the present utility model, after the end cover is connected to the pump cover, the insertion block on the pump cover is inserted into the docking groove of the end cover. The insertion block presses the arc-shaped push blocks on both sides in the docking groove. The push blocks drive the push rod to move. The push rod drives the moving abutting ring to move. The moving abutting ring can tightly press these sealing ring blocks in the annular grooves, ensuring that the sealing performance at the connection is significantly improved and effectively preventing the leakage of the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a structural schematic diagram of the present utility model;

[0015] Figure 2 is a structural schematic diagram of the end cover of the present utility model;

[0016] Figure 3 is a schematic structural view of the pump cover of the present utility model;

[0017] Figure 4 is of the present utility model Figure 2 an enlarged structural view of part A;

[0018] Figure 5 is of the present utility model Figure 2 an enlarged structural view of part B.

[0019] Reference numerals: 1, bottom plate; 2, water pump main body; 3, end cover; 4, pump cover; 5, first annular groove; 6, second annular groove; 7, fixed abutting ring; 8, movable abutting ring; 9, push rod; 10, push block; 11, mating slot; 12, mating block; 13, first moving block; 14, first spring; 15, guide block; 16, guide groove; 17, first sealing ring block; 18, second sealing ring block; 19, first fixing block; 20, positioning hole; 21, second fixing block; 22, positioning rod; 23, fixing assembly; 231, locking hole; 232, locking rod; 233, second moving block; 234, pull rod; 235, second spring. Detailed implementation manners

[0020] Embodiment

[0021] Refer to Figures 1 to 5, a mechanical seal structure of an acid-resistant pump according to this embodiment includes a bottom plate 1. A water pump main body 2 is fixedly connected to the upper end of the bottom plate 1. One end of the water pump main body 2 is fixedly connected to an end cover 3. A first ring groove 5 is formed on one side of one end of the end cover 3, and a second ring groove 6 is formed on the other side of one end of the end cover 3. Fixed contact rings 7 are fixedly connected to the inner walls of one sides of the first ring groove 5 and the second ring groove 6. Moving contact rings 8 are fixedly connected to the inner walls of the other sides of the first ring groove 5 and the second ring groove 6. One end of the moving contact ring 8 is fixedly connected to a push rod 9. The push rod 9 is slidably connected inside the end cover 3. One end of the push rod 9 away from the moving contact ring 8 is fixedly connected to a push block 10. The push block 10 is of an arc-shaped structure. Opposite slots 11 are formed on both sides of one end of the end cover 3. The push block 10 is movably connected inside the opposite slots 11. An opposite insertion block 12 is inserted into the opposite slots 11. The opposite insertion block 12 is movably connected to the push block 10. One end of the opposite insertion block 12 away from the end cover 3 is fixedly connected to a pump cover 4. A first sealing ring block 17 is fixedly connected to one side of one end of the pump cover 4, and the first sealing ring block 17 is movably connected to the first ring groove 5. A second sealing ring block 18 is fixedly connected to the other side of one end of the pump cover 4, and the second sealing ring block 18 is movably connected to the second ring groove 6. Both the first sealing ring block 17 and the second sealing ring block 18 are in contact with the moving contact ring 8 and the static contact ring. Sealing gaskets are fixed on both the first sealing ring block 17 and the second sealing ring block 18. Through the above settings, the reliability of the seal is greatly enhanced, the internal medium leakage can be effectively blocked, the leakage risk is reduced, and at the same time, the stability of the pump body structure is strengthened to ensure the stable operation of the pump body.

[0022] Reference Figure 4 , a first moving block 13 is fixedly connected to one side of the push rod 9. The first moving block 13 is slidably connected inside. First springs 14 are fixedly connected to both sides of one end of the first moving block 13. One end of the first spring 14 is fixedly connected to the inside of the end cover 3; by fixing the first moving block 13 on the push rod 9, the first moving block 13 moves inside the end cover 3 through the first spring 14. When the opposite insertion block 12 leaves the opposite slot 11, the first spring 14 makes the first moving block 13 drive the push block 10 to reset, so that the moving contact ring 8 resets.

[0023] Reference Figure 4 , guide blocks 15 are fixedly connected to both sides of the first moving block 13. Guide grooves 16 are formed on both sides of the inside of the end cover 3. The guide blocks 15 are slidably connected to the guide grooves 16; by fixing the guide blocks 15 on both sides of the first moving block 13 and forming the guide grooves 16 inside the end cover 3, the guide blocks 15 slide in the guide grooves 16, and the push rod 9 can move stably, so that the moving contact ring 8 moves stably.

[0024] Reference Figure 1 and Figure 3, both sides of the end cover 3 are fixedly connected with first fixing blocks 19. Positioning holes 20 are formed inside the first fixing blocks 19. Both sides of the pump cover 4 are fixedly connected with second fixing blocks 21. One end of the second fixing block 21 is fixedly connected with a positioning rod 22. The positioning rod 22 is movably connected with the positioning hole 20. A fixing assembly 23 is arranged on one side of the first fixing block 19; by fixing the first fixing blocks 19 on both sides of the end cover 3, forming positioning holes 20 inside the first fixing blocks 19, fixing the second fixing blocks 21 on both sides of the pump cover 4, and fixing the positioning rods 22 on the second fixing blocks 21, the pump cover 4 can be connected to the end cover 3.

[0025] Reference Figure 5 , the fixing assembly 23 includes a lock hole 231. The lock hole 231 is formed inside the positioning rod 22. A lock rod 232 is movably connected inside the lock hole 231. One end of the lock rod 232 is fixedly connected with a pull rod 234. One side of the pull rod 234 is slidably connected with the first fixing block 19. One side of the pull rod 234 is fixedly connected with a second moving block 233. The second moving block 233 is slidably connected inside the first fixing block 19. Both sides of one end of the second moving block 233 are fixedly connected with second springs 235. One end of the second spring 235 is fixedly connected with the inside of the first fixing block 19; by setting the fixing assembly 23, the lock rod 232 is inserted into the lock hole 231 of the positioning rod 22 under the action of the second spring 235, fixing the positioning rod 22 and the positioning hole 20, so that the end cover 3 can be fixedly connected to the pump cover 4. When it is necessary to disassemble the pump cover 4, pull the pull rod 234. The pull rod 234 drives the second moving block 233 to move. The second moving block 233 drives the positioning rod 22 to leave the positioning hole 20, and then the pump cover 4 can be disassembled. This design is faster in disassembly and assembly compared with traditional flange connections.

[0026] Principle of use and advantages: By forming a first annular groove 5 and a second annular groove 6 on the pump body end cover 3, fixing a first sealing ring block 17 and a second sealing ring block 18 on the pump cover 4. After the pump cover 4 is connected to the end cover 3, the first sealing ring block 17 enters the first annular groove 5, and the second sealing ring block 18 enters the second annular groove 6, forming a multi-channel sealing structure, enhancing the reliability of the seal, effectively blocking the leakage of internal media, and reducing the risk of leakage. After the end cover 3 is connected to the pump cover 4, the plug-in block 12 on the pump cover 4 is inserted into the docking groove of the end cover 3. The plug-in block 12 presses the arc-shaped pushing blocks 10 on both sides in the docking groove. The pushing blocks 10 drive the push rod 9 to move. The push rod 9 drives the moving abutting ring 8 to move. The moving abutting ring 8 can tightly press these sealing ring blocks in the annular groove, ensuring that the sealing performance at the connection is significantly improved and effectively preventing the leakage of the medium.

Claims

1. An acid-resistant pump mechanical seal structure, comprising a bottom plate (1), characterized in that: The upper end of the bottom plate (1) is fixedly connected with a water pump main body (2). One end of the water pump main body (2) is fixedly connected with an end cover (3). One side of one end of the end cover (3) is provided with a first annular groove (5), and the other side of one end of the end cover (3) is provided with a second annular groove (6). Fixed anti-ring (7) is fixedly connected to the inner walls of one sides of the first annular groove (5) and the second annular groove (6). Moving anti-ring (8) is fixedly connected to the inner walls of the other sides of the first annular groove (5) and the second annular groove (6). One end of the moving anti-ring (8) is fixedly connected with a push rod (9). The push rod (9) is slidably connected inside the end cover (3). One end of the push rod (9) away from the moving anti-ring (8) is fixedly connected with a push block (10). The push block (10) is of an arc-shaped structure. Opposite slots (11) are provided on both sides of one end of the end cover (3). The push block (10) is movably connected inside the opposite slots (11). An opposite plug block (12) is inserted into the opposite slots (11). The opposite plug block (12) is movably connected with the push block (10). One end of the opposite plug block (12) away from the end cover (3) is fixedly connected with a pump cover (4). One side of one end of the pump cover (4) is fixedly connected with a first sealing ring block (17), and the first sealing ring block (17) is movably connected with the first annular groove (5). The other side of one end of the pump cover (4) is fixedly connected with a second sealing ring block (18), and the second sealing ring block (18) is movably connected with the second annular groove (6).

2. The mechanical seal structure of an acid-resistant pump according to claim 1, characterized in that: One side of the push rod (9) is fixedly connected with a first moving block (13). The first moving block (13) is slidably connected inside of...

3. The mechanical seal structure of an acid-resistant pump according to claim 2, characterized in that: Both sides of one end of the first moving block (13) are fixedly connected with first springs (14). One end of the first springs (14) is fixedly connected with the inside of the end cover (3).

4. The mechanical seal structure of an acid-resistant pump according to claim 2, wherein: Both sides of the first moving block (13) are fixedly connected with guiding blocks (15). Guiding grooves (16) are provided on both sides of the inside of the end cover (3). The guiding blocks (15) are slidably connected with the guiding grooves (16).

5. The mechanical seal structure of an acid-resistant pump according to claim 1, characterized in that: Both sides of the end cover (3) are fixedly connected with first fixing blocks (19). Positioning holes (20) are provided inside the first fixing blocks (19). Both sides of the pump cover (4) are fixedly connected with second fixing blocks (21). One end of the second fixing blocks (21) is fixedly connected with positioning rods (22). The positioning rods (22) are movably connected with the positioning holes (20). A fixing assembly (23) is provided on one side of the first fixing blocks (19).

6. The mechanical seal structure of an acid-resistant pump according to claim 5, characterized in that: The fixing assembly (23) includes a locking hole (231). The locking hole (231) is provided inside the positioning rod (22). A locking rod (232) is movably connected inside the locking hole (231). One end of the locking rod (232) is fixedly connected with a pull rod (234). One side of the pull rod (234) is slidably connected with the first fixing block (19). One side of the pull rod (234) is fixedly connected with a second moving block (233). The second moving block (233) is slidably connected inside the first fixing block (19).

7. A mechanical seal structure of an acid-resistant pump according to claim 6, characterized in that: Both sides of one end of the second moving block (233) are fixedly connected with second springs (235), and one end of each second spring (235) is fixedly connected to the inside of the first fixing block (19).

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