Hard sealing fixed ball valve

Abstract

The utility model provides a hard sealing fixed ball valve, which relates to the technical field of ball valves, and comprises a fixed valve body, the top of which is fixedly provided with a loading shell; a worm wheel body is fixedly mounted on the circumferential outer wall of the ball valve rod body; a loading cylinder is fixedly mounted on the right side wall of the loading shell; and a lubricating cavity is fixedly mounted in the center of the top of the loading shell. According to the ball valve body, the worm wheel body and the worm body can be automatically lubricated when state switching is carried out on the ball valve rod body, so that the worm wheel body and the worm body can be lubricated and maintained regularly, the situation that special time is consumed due to regular lubrication and maintenance of the worm wheel body and the worm body is avoided, and the service life of the worm wheel body and the worm body is prolonged. The problems that due to the fact that friction force generated during operation of a worm gear and a worm in a worm gear driving device in a ball valve is large, in order to guarantee normal operation of the worm gear driving device, workers need to conduct oil injection lubrication on the worm gear driving device regularly, and the workload of the workers is increased are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a hard-sealed fixed ball valve. Background Art

[0002] The hard-sealed fixed ball valve is a high-performance valve widely used in various fields such as petroleum and chemical industry. When the hard-sealed fixed ball valve is in use, most of them are switched by turning the hand wheel to indirectly control the rotation of the valve stem and the valve body under the action of the worm gear drive device. However, since the friction force generated by the worm gear inside the worm gear drive device in the ball valve is relatively large during operation, in order to ensure the normal operation of the worm gear drive device, workers are required to regularly oil and lubricate the worm gear drive device, which increases the workload of the workers. Therefore, the utility model improves a hard-sealed fixed ball valve which can automatically oil and lubricate the worm gear drive device when switching the valve body state. Summary of the invention

[0003] The disclosed embodiment relates to a hard-sealed fixed ball valve, which squeezes the lubricating oil inside a lubricating cavity by lowering the oil filling pressure plate. Since there is only one open oil filling head in the lubricating cavity, the squeezed lubricating oil is injected into the connecting portion between the worm wheel body and the worm body through the oil filling head, thereby lubricating the worm wheel body and the worm body and maintaining the worm wheel body and the worm body.

[0004] In a first aspect of the present disclosure, a hard-sealed fixed ball valve is provided, specifically comprising: a fixed valve body, a loading shell is fixedly installed on the top of the fixed valve body; a ball valve rod body is rotatably installed inside the loading shell and the fixed valve body; a worm gear body is fixedly installed on the circumferential outer wall of the ball valve rod body; the worm gear body is located inside the loading shell; a loading cylinder is fixedly installed on the right side wall of the loading shell; a transmission cylinder with a cylindrical structure is rotatably installed at the front end of the loading cylinder; a lubrication cavity is fixedly installed at the center position of the top of the loading shell; an oil filling head is fixedly installed on the left side of the lubrication cavity; a driving wheel is fixedly installed on the circumferential outer wall of the transmission cylinder; a docking slot is provided at the front end of the transmission cylinder; an operating shaft is rotatably installed inside the loading cylinder; and an operating handwheel is fixedly installed at the front end of the operating shaft.

[0005] In at least some embodiments,

[0006] A worm body is fixedly installed at the center position of the operating shaft; the worm body is cooperatively connected with the worm wheel body; a docking slide rod is slidably installed at the inner front end of the operating shaft; a mounting disk with a disc-shaped structure is fixedly installed at the front end of the docking slide rod; a mounting disk is fixedly installed at the rear end of the docking slide rod; a spring A is embedded between the rear side of the mounting disk and the interior of the operating shaft; a docking card block is fixedly installed on the circumferential outer wall of the mounting disk; the shape of the docking card block matches the shape of the docking card slot.

[0007] In at least some embodiments,

[0008] A sealing plug is fixedly installed inside the oil filling head; an L-shaped support seat is fixedly installed on the top of the lubrication cavity; an oil filling shaft is rotatably installed on the support seat; a knob is fixed on the front end of the oil filling shaft; an oil filling cam is fixedly installed on the oil filling shaft; a driven wheel is fixedly installed on the circumferential outer wall of the oil filling shaft; the driven wheel is connected to the driving wheel through a chain; an oil filling slide plate is slidably installed on the top end of the inner part of the lubrication cavity; the top of the oil filling slide plate is in contact with the outer wall of the oil filling cam.

[0009] In at least some embodiments,

[0010] An oil filling pressure plate is fixedly installed at the bottom of the oil filling slide; the oil filling pressure plate is also slidably installed inside the lubrication cavity; a spring B is embedded between the top of the oil filling pressure plate and the inner top of the lubrication cavity; an oil filling head is fixedly installed on the right side of the bottom of the lubrication cavity; the bottom end of the oil filling head is also inserted into the interior of the loading shell; the oil filling head is also located above the connection between the worm wheel body and the worm body.

[0011] The utility model provides a hard-sealed fixed ball valve, which has the following beneficial effects:

[0012] 1. An oil injection cam is provided in the ball valve. When the oil injection cam rotates, the oil injection cam uses its own cam characteristics to intermittently push the oil injection slide plate, so that the oil injection slide plate is forced to squeeze the lubricating oil with the oil injection pressure plate intermittently, so that the lubricating oil is quickly injected into the worm body and the worm wheel body, which lubricates and maintains the worm wheel drive device in the ball valve, and prevents the worm wheel drive device from being difficult to rotate or stuck in the later stage due to lack of oil lubrication.

[0013] 2. The ball valve selectively presses the force plate so that the ball valve body can automatically lubricate the worm wheel and the worm body when the hand wheel and the operating shaft are rotated to switch the state of the ball valve rod body. In this way, the worm wheel and the worm body can be lubricated and maintained regularly without wasting dedicated time for regular lubrication and maintenance of the worm wheel and the worm body, thereby improving the convenience of using the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0015] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0016] In the attached picture:

[0017] Figure 1 A schematic diagram showing the overall structure of the present application;

[0018] Figure 2 A schematic diagram of a half-section structure of a loading shell of the present application is shown;

[0019] Figure 3 This application shows Figure 2 The enlarged structural diagram of part A in the middle;

[0020] Figure 4 A schematic diagram of the operating shaft and ball valve stem structure of the present application is shown;

[0021] Figure 5 The schematic diagram of the structure of the oil injection shaft and the oil injection pressure plate of the present application is shown;

[0022] Figure 6 A schematic diagram of the structure of the lubrication cavity in the present application in a disassembled state is shown;

[0023] Reference numerals list

[0024] 1. Fixed valve body; 2. Loading shell; 3. Ball valve stem; 4. Worm body; 5. Loading cylinder; 6. Transmission cylinder; 7. Driving wheel; 8. Docking slot; 9. Operating shaft; 10. Worm body;

[0025] 11. Docking slide bar; 12. Force plate; 13. Mounting plate; 14. Spring A; 15. Docking block; 16. Lubrication cavity; 17. Oil filling head; 18. Sealing plug; 19. Support seat; 20. Oil filling shaft;

[0026] 21. Oil filling cam; 22. Driven wheel; 23. Oil filling slide plate; 24. Oil filling pressure plate; 25. Spring B; 26. Oil filling head. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Please refer to Figures 1 to 6 :

[0029] Embodiment 1:

[0030] The utility model proposes a hard-sealed fixed ball valve, comprising: a fixed valve body 1, a loading shell 2 is fixedly installed on the top of the fixed valve body 1; a ball valve rod body 3 is rotatably installed inside the loading shell 2 and the fixed valve body 1; a worm wheel body 4 is fixedly installed on the circumferential outer wall of the ball valve rod body 3; the worm wheel body 4 is located inside the loading shell 2; a loading cylinder 5 is fixedly installed on the right side wall of the loading shell 2; a transmission cylinder 6 with a cylindrical structure is rotatably installed at the front end of the loading cylinder 5; a lubrication cavity 16 is fixedly installed at the center position of the top of the loading shell 2; an oil filling head 17 is fixedly installed on the left side of the lubrication cavity 16; a driving wheel 7 is fixedly installed on the circumferential outer wall of the transmission cylinder 6; a docking slot 8 is provided at the front end of the transmission cylinder 6; an operating shaft 9 is rotatably installed inside the loading cylinder 5; and an operating handwheel is fixedly installed at the front end of the operating shaft 9.

[0031] By rotating the hand wheel and the operating shaft 9, the operating shaft 9 rotates with the worm body 10, and the worm body 10 rotates with the ball valve rod body 3 under the action of the cooperation and connection of the worm wheel body 4, so that the state of the ball valve rod body 3 is switched, and the switching of the ball valve interception and flow is realized. From then on, without triggering the oil injection mechanism, only the state of the ball valve rod body 3 is switched.

[0032] Embodiment 2, based on embodiment 1,

[0033] A worm body 10 is fixedly installed at the center position of the operating shaft 9; the worm body 10 is cooperatively connected with the worm wheel body 4; a docking slide rod 11 is slidably installed on the inner front end of the operating shaft 9; a mounting disk 13 with a disc-shaped structure is fixedly installed on the front end of the docking slide rod 11; a mounting disk 13 is fixedly installed on the rear end of the docking slide rod 11; a spring A14 is embedded between the rear side of the mounting disk 13 and the inside of the operating shaft 9; a docking block 15 is fixedly installed on the circumferential outer wall of the mounting disk 13; the shape of the docking block 15 matches the shape of the docking slot 8; a sealing plug 18 is fixedly installed inside the oil filling head 17; a support seat 19 with an L-shaped structure is fixedly installed on the top of the lubrication cavity 16; an oil filling shaft 20 is rotatably installed on the support seat 19; a knob is fixed on the front end of the oil filling shaft 20; and an oil filling cam 21 is fixedly installed on the oil filling shaft 20.

[0034] By rotating the knob and the oil filling shaft 20, the oil filling shaft 20 rotates with the oil filling cam 21, and the oil filling cam 21 intermittently pushes the oil filling slide plate 23 through rotation, so that the oil filling slide plate 23 is forced to move the oil filling pressure plate 24 downward to squeeze the lubricating oil inside the lubrication cavity 16, and the lubricating oil is squeezed and injected between the worm body 4 and the worm body 10 through the oil filling head 26, so that the workers can lubricate the worm body 4 and the worm body 10 separately.

[0035] Embodiment 3, based on embodiment 2,

[0036] A driven wheel 22 is fixedly mounted on the circumferential outer wall of the oil filling shaft 20; the driven wheel 22 is connected to the driving wheel 7 through a chain; an oil filling slide plate 23 is slidably mounted on the inner top of the lubrication cavity 16; the top of the oil filling slide plate 23 is in close contact with the outer wall of the oil filling cam 21; an oil filling pressure plate 24 is fixedly mounted on the bottom of the oil filling slide plate 23; the oil filling pressure plate 24 is also slidably mounted inside the lubrication cavity 16; a spring B25 is embedded between the top of the oil filling pressure plate 24 and the inner top of the lubrication cavity 16; an oil filling head 26 is fixedly mounted on the right side of the bottom of the lubrication cavity 16; the bottom end of the oil filling head 26 is also inserted into the interior of the loading shell 2; the oil filling head 26 is also located above the connection between the worm wheel body 4 and the worm body 10.

[0037] Before rotating the operating shaft 9, press the force plate 12 in advance so that it is forced to move the docking slide bar 11, the mounting plate 13 and the docking block 15 backward, so that the docking block 15 is engaged and enters the docking slot 8, so that there is a spline connection between the operating shaft 9 and the transmission cylinder 6. When the operating shaft 9 continues to rotate, the operating shaft 9 will rotate with the transmission cylinder 6 and the driving wheel 7, and the driving wheel 7 will rotate with the driven wheel 22 and the oil filling shaft 20 under the action of the chain, so that the oil filling cam 21 on the oil filling shaft 20 intermittently pushes the oil filling slide plate 23 through rotation, so that the oil filling slide plate 23 is forced to move the oil filling pressure plate 24 downward to squeeze the lubricating oil inside the lubrication cavity 16, so that the lubricating oil is affected by the squeezing and is injected between the worm wheel body 4 and the worm body 10 through the oil filling head 26.

[0038] The working principle of this embodiment:

[0039] When the worm wheel body 4 and the worm body 10 need to be lubricated while the state of the ball valve rod body 3 is switched, the force plate 12 can be pressed in advance to make it move backward with the docking slide rod 11, the mounting plate 13 and the docking card block 15, so that the docking card block 15 is engaged and enters the docking card slot 8, so that there is a spline connection between the operating shaft 9 and the transmission cylinder 6, and then when the operating shaft 9 continues to rotate, the operating shaft 9 will rotate with the transmission cylinder 6 and the driving wheel 7, and the driving wheel 7 will be on the chain Under the action of the driven wheel 22 and the oil injection shaft 20, the oil injection cam 21 on the oil injection shaft 20 intermittently pushes the oil injection slide plate 23 through rotation, so that the oil injection slide plate 23 is forced to move the oil injection pressure plate 24 downward to squeeze the lubricating oil inside the lubrication cavity 16, so that the lubricating oil is injected between the worm wheel body 4 and the worm body 10 through the oil injection head 26 under the influence of the squeezing. From then on, the ball valve can synchronously lubricate the worm wheel body 4 and the worm body 10 when the ball valve rod body 3 is switched.

[0040] In this article, there are a few points to note:

[0041] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0042] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0043] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A hard-seal fixed ball valve, comprising: A fixed valve body (1), wherein a loading shell (2) is fixedly mounted on the top of the fixed valve body (1); a ball valve stem (3) is rotatably mounted inside the loading shell (2) and the fixed valve body (1); and the characteristic is that a worm wheel (4) is fixedly mounted on the circumferential outer wall of the ball valve stem (3); and the worm wheel (4) is located inside the loading shell (2); A loading cylinder (5) is fixedly mounted on the right side wall of the loading shell (2); a transmission cylinder (6) of a cylindrical structure is rotatably mounted on the front end of the loading cylinder (5); a lubrication cavity (16) is fixedly mounted at the center of the top of the loading shell (2); and an oil filling head (17) is fixedly mounted on the left side of the lubrication cavity (16).

2. A hard-seal fixed ball valve according to claim 1, characterized in that: A driving wheel (7) is fixedly mounted on the circumferential outer wall of the transmission cylinder (6); a docking slot (8) is provided at the front end of the transmission cylinder (6); an operating shaft (9) is rotatably mounted inside the loading cylinder (5); and an operating hand wheel is fixedly mounted at the front end of the operating shaft (9).

3. A hard-seal fixed ball valve according to claim 2, characterized in that: A worm body (10) is fixedly mounted at the center of the operating shaft (9); the worm body (10) is cooperatively connected with the worm wheel body (4); a docking slide rod (11) is slidably mounted on the inner front end of the operating shaft (9); and a mounting plate (13) with a disc-shaped structure is fixedly mounted on the front end of the docking slide rod (11).

4. A hard-seal fixed ball valve according to claim 3, characterized in that: A mounting plate (13) is fixedly mounted on the rear end of the docking slide rod (11); a spring A (14) is embedded between the rear side of the mounting plate (13) and the interior of the operating shaft (9); a docking card block (15) is fixedly mounted on the circumferential outer wall of the mounting plate (13); the shape of the docking card block (15) matches the shape of the docking card slot (8).

5. A hard-seal fixed ball valve according to claim 4, characterized in that: A sealing plug (18) is inserted and fixed inside the oil filling head (17); a support seat (19) with an L-shaped structure is fixedly installed on the top of the lubrication cavity (16); an oil filling shaft (20) is rotatably installed on the support seat (19); a knob is fixed at the front end of the oil filling shaft (20); and an oil filling cam (21) is fixedly installed on the oil filling shaft (20).

6. A hard-seal fixed ball valve according to claim 5, characterized in that: A driven wheel (22) is fixedly mounted on the circumferential outer wall of the oil injection shaft (20); the driven wheel (22) is connected to the driving wheel (7) via a chain; an oil injection slide plate (23) is slidably mounted on the top end of the lubrication cavity (16); the top of the oil injection slide plate (23) is in close contact with the outer wall of the oil injection cam (21).

7. A hard-seal fixed ball valve according to claim 6, characterized in that: An oil injection pressure plate (24) is fixedly mounted on the bottom of the oil injection slide plate (23); the oil injection pressure plate (24) is also slidably mounted inside the lubrication cavity (16); and a spring B (25) is embedded between the top of the oil injection pressure plate (24) and the top of the interior of the lubrication cavity (16).

8. A hard-seal fixed ball valve according to claim 7, characterized in that: An oiling head (26) is fixedly mounted on the right side of the bottom of the lubrication cavity (16); the bottom end of the oiling head (26) is also inserted into the interior of the loading shell (2); and the oiling head (26) is also located above the connection between the worm wheel body (4) and the worm body (10).

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