A self-balancing ball valve based on high temperature media

Abstract

The present invention discloses a self-balancing ball valve based on high-temperature media, which belongs to the field of ball valve technology. The ball valve includes two valve bodies, and two half-valve cores are provided in the cavities formed in the two valve bodies; a valve seat is provided on one side of the inner wall of the valve body, and two piston rods are provided on one end of the valve seat in a symmetrical structure. The inner wall of the valve body is symmetrically provided with two cavities, and the piston rods are in sliding contact with the inner wall of the cavity. An expansion groove is provided on one side of the inner wall of the valve body, and the valve seat gap matches the corresponding expansion groove gap. This technical solution can make the valve seat fit with the outer wall of the half-valve core under the pressure of the liquid through the provided piston rod, thereby avoiding the gap between the valve seat and the half-valve core after long-term use, which leads to leakage. The provided expansion groove can effectively provide expansion space for the valve seat when the half-valve core expands, thereby avoiding the valve seat being restricted, resulting in excessive pressure between the valve seat and the half-valve core, making it difficult to rotate the half-valve core and affecting the life of the half-valve core.

Description

Technical Field

[0001] The present invention relates to the technical field of ball valves, and more particularly to a self-balancing ball valve based on high-temperature media. Background Art

[0002] Ball valves are increasingly used in pipelines due to their ease of control. For ball valves used in high-temperature media, the valve core may become stuck in the valve body cavity due to temperature deformation. This can cause the valve core to fail to rotate, further accelerating damage to the valve core and valve seat. Patent document CN113790282A in the prior art provides a self-balancing ball valve based on high-temperature media. This device balances the heat interference from the high-temperature medium by cooling the valve core, keeping the valve core within a normal temperature range when opening and closing. The powder coating, magnetic end, and velvet layer provide a slow cooling effect, preventing damage to the valve core caused by rapid cooling and effectively extending the service life of the valve core.

[0003] Although the device has many beneficial effects, the following problems still exist: the device uses heat conduction to cool the ball valve, but when the ball valve is immersed in a high-temperature liquid medium, this method has little cooling effect on the ball valve.

[0004] In view of this, we propose a self-balancing ball valve based on high-temperature media. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The object of the present invention is to provide a self-balancing ball valve based on high-temperature media to solve the problems raised in the above background technology.

[0007] 2. Technical solution

[0008] A self-balancing ball valve based on high-temperature media includes two valve bodies, which are connected by bolts, and the same valve stem is rotatably arranged between the two valve bodies, and two half valve cores are arranged in the cavity formed in the two valve bodies; a valve seat is provided on one side of the inner wall of the valve body, and two piston rods are symmetrically arranged at one end of the valve seat, and the inner wall of the valve body is symmetrically structured with two cavities, and the piston rod is in sliding contact with the inner wall of the cavity, and an expansion groove is provided on one side of the inner wall of the valve body, and the valve seat gap is matched with the corresponding expansion groove gap.

[0009] As an optional solution to the technical solution of the present application, the inner wall of the valve body is symmetrically structured and has two guide grooves A, a guide block A is provided inside the guide groove A, a scraper ring A is provided in the middle of the two guide blocks A, and one end of the upper side of the scraper ring is rotatably connected to a support rod A, and a rotating rod is provided at the lower end of one side of the support rod A.

[0010] As an optional solution to the technical solution of the present application, a screw is provided through one side of the upper end of the valve body, a screw hole is provided on one side of the upper end of the half valve core, a socket is provided on one side of the upper end of the half valve core, and the lower end of the valve stem is symmetrically provided with two plug rods, the plug rods are plugged into the socket, and the screw is threadedly connected to the screw hole.

[0011] As an optional solution to the technical solution of the present application, the guide block A is slidably connected to the guide groove A, the outer wall of the scraper ring A is in sliding contact with the inner wall of the valve body, one side of the support rod A is in sliding contact with the half valve core through the rotating rod, and a screw rod is provided through the lower end of the rotating rod, and the screw rod is threadedly connected to the support rod A.

[0012] As an optional solution to the technical solution of the present application, a threaded groove is provided on the lower outer wall of the rotating rod, a movable block is sleeved on the outer wall of the rotating rod, two support rods B are symmetrically provided on the outer wall of the movable block, scraper rings B are provided inside the two half valve cores, two guide grooves B are provided on the inner wall of the half valve core, and guide blocks B are provided inside the guide grooves B.

[0013] As an optional solution of the technical solution of the present application, the movable block is in sliding contact with the rotating rod, the inner wall of the movable block is in sliding contact with the inner wall of the threaded groove, one end of the support rod B is rotatably connected to the movable block, one end of the support rod B is rotatably connected to one end of the scraper ring B, the outer wall of the scraper ring B is in sliding contact with the inner wall of the half valve core, and the guide block B is slidably connected to the guide groove B.

[0014] As an optional solution to the technical solution of the present application, a ring groove is provided at the lower end of the inner wall of the valve body, a ring block is provided inside the ring groove, a slot is provided at the upper end of the ring block, an insert block is provided at the lower end of the half valve core, and a collection box is provided through the lower end of the valve body.

[0015] As an optional solution of the technical solution of the present application, the ring block is slidably connected to the ring groove, the plug block is plugged into the slot, the collection box is connected to the valve body by bolts, and the two valve seats are connected by bolts.

[0016] 3. Beneficial effects

[0017] Compared with the existing technology, the advantages of the technical solution of this application are:

[0018] (1) The technical solution of the present application can make the valve seat fit with the outer wall of the half valve core under the pressure of the liquid by providing a piston rod, thereby avoiding the generation of a gap between the valve seat and the half valve core after long-term use, which leads to leakage. The expansion groove can effectively provide expansion space for the valve seat when the half valve core expands, thereby avoiding the valve seat being restricted, resulting in excessive pressure between the valve seat and the half valve core, making it more difficult to rotate the half valve core and affecting the life of the half valve core.

[0019] (2) The technical solution of the present application can clean the inner walls of the two valve bodies by providing a support rod when the half valve core rotates, thereby preventing sediment from accumulating between the half valve core and the valve body, which would affect the life of the device.

[0020] (3) The technical solution of the present application is to provide a rotating rod which can cooperate with the movable block through the threaded groove to rotate the support rod B when the support rod A rotates, and then remove the sediment on the inner wall of the half valve core through the hanging ring B to avoid affecting the life of the device.

[0021] (4) The technical solution of the present application can facilitate the replacement of the two half valve cores inside the valve core without cutting off the conveying medium by setting the screw rod, screw rod and screw hole. The operation is simple and convenient, and can effectively increase the work efficiency of the staff.

[0022] (5) The technical solution of the present application can collect the sediment between the half valve core and the valve body through the collection box provided, and the sediment can be easily cleaned after removal, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a self-balancing ball valve based on high-temperature media disclosed in a preferred embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the overall internal structure of a self-balancing ball valve based on high-temperature media disclosed in a preferred embodiment of the present application;

[0025] Figure 3 This is a structural schematic diagram of the guide groove A portion of a self-balancing ball valve based on high-temperature media disclosed in a preferred embodiment of the present application;

[0026] Figure 4 This is a schematic diagram of the screw hole structure of a self-balancing ball valve based on high-temperature media disclosed in a preferred embodiment of the present application;

[0027] Figure 5 This is a structural diagram of the scraper ring B portion of a self-balancing ball valve based on high-temperature media disclosed in a preferred embodiment of the present application;

[0028] Figure 6 This is a schematic structural diagram of the rotating rod portion of a self-balancing ball valve based on high-temperature media disclosed in a preferred embodiment of the present application;

[0029] Figure 7 This is a schematic structural diagram of the insert portion of a self-balancing ball valve based on high-temperature media disclosed in a preferred embodiment of the present application;

[0030] Explanation of the numbers in the figure: 1. Valve body; 2. Valve stem; 3. Half valve core; 4. Valve seat; 5. Piston rod; 6. Cavity; 7. Expansion groove; 8. Guide groove A; 9. Guide block A; 10. Scraper ring A; 11. Strut A; 12. Rotating rod; 13. Screw; 14. Screw hole; 15. Socket; 16. Insert rod; 17. Screw; 18. Threaded groove; 19. Movable block; 20. Strut B; 21. Scraper ring B; 22. Guide groove B; 23. Guide block B; 24. Ring groove; 25. Ring block; 26. Slot; 27. Insert block; 28. Collection box. DETAILED DESCRIPTION

[0031] See also Figure 1-7 , the present invention provides a technical solution:

[0032] A self-balancing ball valve based on high-temperature media includes two valve bodies 1 and a valve stem 2. Two half valve cores 3 are provided in the middle of the two valve bodies 1. A valve seat 4 is provided on one side of the inner wall of the valve body 1. Two piston rods 5 are symmetrically provided at one end of the valve seat 4. Two cavities 6 are symmetrically provided on the inner wall of the valve body 1. An expansion groove 7 is provided on one side of the inner wall of the valve body 1.

[0033] Specifically, the piston rod 5 is in sliding contact with the inner wall of the cavity 6 , and the size of the expansion groove 7 is larger than that of the valve seat 4 .

[0034] The piston rod 5 is provided so that the valve seat 4 fits into the outer wall of the half valve core 3 under the pressure of the liquid.

[0035] Furthermore, the inner wall of the valve body 1 is symmetrically structured with two guide grooves A8, a guide block A9 is provided inside the guide groove A8, a scraper ring A10 is provided in the middle of the two guide blocks A9, and one end of the upper side of the scraper ring A10 is rotatably connected to a support rod A11, and a rotating rod 12 is provided at the lower end of one side of the support rod A11.

[0036] Furthermore, a screw 13 is provided through one side of the upper end of the valve body 1, a screw hole 14 is opened on one side of the upper end of the half valve core 3, and a socket 15 is opened on one side of the upper end of the half valve core 3. The lower end of the valve stem 2 is symmetrically provided with two plug rods 16, the plug rods 16 are plugged into the socket 15, and the screw 13 is threadedly connected to the screw hole 14.

[0037] The provided screw 13 can cooperate with the screw hole 14 to fix the half valve core 3, and the provided two insertion rods 16 can make the two half valve cores 3 rotate simultaneously after being inserted into the insertion hole 15.

[0038] Furthermore, the guide block A9 is slidably connected to the guide groove A8, the outer wall of the scraper ring A10 is in sliding contact with the inner wall of the valve body 1, one side of the support rod A11 is in sliding contact with the half valve core 3 through the rotating rod 12, and a screw rod 17 is provided through the lower end of the rotating rod 12, and the screw rod 17 is threadedly connected to the support rod A11.

[0039] The guide block A9 and the guide groove A8 can facilitate the movement of the scraper ring A10 inside the valve body 1.

[0040] It is worth noting that a threaded groove 18 is provided on the outer wall of the lower side of the rotating rod 12, and a movable block 19 is sleeved on the outer wall of the rotating rod 12. Two support rods B20 are symmetrically provided on the outer wall of the movable block 19. Scraper rings B21 are provided inside the two half valve cores 3. Two guide grooves B22 are provided on the inner wall of the half valve core 3, and a guide block B23 is provided inside the guide groove B22.

[0041] The rotating rod 12 can move the movable block 19 under the action of the thread groove 18 when it is rotated.

[0042] It is worth noting that the movable block 19 is in sliding contact with the rotating rod 12, the inner wall of the movable block 19 is in sliding contact with the inner wall of the threaded groove 18, one end of the support rod B20 is rotatably connected to the movable block 19, one end of the support rod B20 is rotatably connected to one end of the scraper ring B21, the outer wall of the scraper ring B21 is in sliding contact with the inner wall of the half valve core 3, and the guide block B23 is slidably connected to the guide groove B22.

[0043] The support rod B20 is provided so that the scraper ring B21 can clean the sediment on the inner wall of the half valve core 3 when it rotates.

[0044] In addition, a ring groove 24 is provided at the lower end of the inner wall of the valve body 1, a ring block 25 is provided inside the ring groove 24, a slot 26 is provided at the upper end of the ring block 25, an insert block 27 is provided at the lower end of the half valve core 3, and a collection box 28 is provided through the lower end of the valve body 1.

[0045] In addition, the ring block 25 is slidably connected to the ring groove 24, the insert block 27 is plugged into the slot 26, the collection box 28 is connected to the valve body 1 by bolts, and the two valve bodies 1 are connected by bolts.

[0046] The provided ring block 25 and the ring groove 24 can facilitate the rotation of the half valve core 3 therein, and the provided collection box 28 can collect sediments for easy cleaning by the staff.

[0047] When the device is working, when the liquid medium needs to flow from the left to the right, the valve stem 2 is rotated to cooperate with the two plug rods 16 and the plug hole 15 so that the two half valve cores 3 are rotated ninety degrees along the direction of the ring groove 24 under the action of the ring block 25. At this time, the liquid medium can flow from the left valve body 1 to the right valve body 1. Among them, under the action of the cavity 6, the pressure of the liquid medium can apply pressure to the piston rod 5, thereby making the valve seat 4 fit tightly with the outer wall of the half valve core 3, avoiding the gap between the valve seat 4 and the half valve core 3 to cause leakage.

[0048] When the temperature of the liquid medium is too high, the valve seat 4 can expand in the expansion groove 7, thereby avoiding limiting the expansion of the valve seat 4, resulting in excessive pressure between the valve seat 4 and the half valve core 3, which makes it difficult to rotate the half valve core 3. When the half valve core 3 rotates, it can drive the support rod A11 to rotate. When the support rod A11 rotates, it can push and pull the scraper ring A10 so that the scraper ring A10 moves along the direction of the guide groove A8 under the action of the guide block A9, thereby scraping off the particles deposited between the two valve bodies 1 and the half valve core 3, and falling into the two collection boxes 28 under the action of gravity. When the support rod A11 rotates, it can cause the rotating rod 12 to rotate. The rotation of the rotating rod 12 can move the movable block 19 through the threaded groove 18. The movement of the movable block 19 can drive the scraper ring B21 to move through the support rod B20. The scraper ring B21 moves along the direction of the guide groove B22 under the action of the guide block B23, thereby cleaning the inner wall of the half valve core 3.

[0049] Among them, when the half valve core 3 needs to be replaced after long-term use, the left screw 13 is rotated to cooperate with the screw hole 14 so that the left half valve core 3 is fixed, that is, the liquid is blocked. After that, the two valve bodies 1 are separated and the rotating rods 12 on the two half valve cores 3 are removed from the support rod A11 through the screw rod 17, and the right half valve core 3 is separated from the plug rod 16 and the slot 26 in sequence through the plug hole 15 and the plug block 27, and then the right half valve core 3 is replaced. After replacing the right half valve core 3, the two valve bodies 1 are connected together. At this time, the valve stem 2 is rotated so that the positions of the two half valve cores 3 are interchanged, and the new left half valve core 3 is fixed by the left screw 13. Then the two valve bodies 1 are separated again, and the right half valve core 3 after the replacement position is replaced. After replacement, the two rotating rods 12 are respectively connected to the two support rods A11, so that the device can continue to work. The two collection boxes 28 provided can facilitate the cleaning of sediment after they are removed.

Claims

1. A self-balancing ball valve for high-temperature media, comprising two valve bodies connected by bolts, and having a common valve stem rotatably disposed between the two valve bodies, characterized in that: Two half valve cores are provided in the cavities formed in the two valve bodies; A valve seat is provided on one side of the inner wall of the valve body, and two piston rods are provided at one end of the valve seat in a symmetrical structure. The inner wall of the valve body is symmetrically provided with two cavities, and the piston rods are in sliding contact with the inner wall of the cavity. An expansion groove is provided on one side of the inner wall of the valve body, and the valve seat gap matches the corresponding expansion groove gap; The inner wall of the valve body is symmetrically structured and has two guide grooves A, wherein a guide block A is provided inside the guide groove A, and a scraper ring A is provided in the middle of the two guide blocks A. One end of the upper side of the scraper ring A is rotatably connected to a support rod A, and a rotating rod is provided at the lower end of one side of the support rod A; A screw is provided through one side of the upper end of the valve body, a screw hole is provided on one side of the upper end of the half valve core, an insertion hole is provided on one side of the upper end of the half valve core, and two plug rods are provided at the lower end of the valve stem in a symmetrical structure, the plug rods are plugged into the insertion hole, and the screw is threadedly connected to the screw hole; The guide block A is slidably connected to the guide groove A, the outer wall of the scraper ring A is in sliding contact with the inner wall of the valve body, one side of the support rod A is in sliding contact with the half valve core through the rotating rod, and a screw rod is provided through the lower end of the rotating rod, and the screw rod is threadedly connected to the support rod A.

2. The self-balancing ball valve for high-temperature media according to claim 1, characterized in that: A threaded groove is provided on the outer wall of the lower side of the rotating rod, and a movable block is sleeved on the outer wall of the rotating rod. Two support rods B are symmetrically provided on the outer wall of the movable block. Scraper rings B are provided inside the two half valve cores. Two guide grooves B are provided on the inner wall of the half valve core, and guide blocks B are provided inside the guide grooves B.

3. The self-balancing ball valve for high-temperature media according to claim 2, characterized in that: The movable block is in sliding contact with the rotating rod, the inner wall of the movable block is in sliding contact with the inner wall of the threaded groove, one end of the support rod B is rotatably connected to the movable block, one end of the support rod B is rotatably connected to one end of the scraper ring B, the outer wall of the scraper ring B is in sliding contact with the inner wall of the half valve core, and the guide block B is slidably connected to the guide groove B.

4. The self-balancing ball valve for high-temperature media according to claim 3, characterized in that: The lower end of the inner wall of the valve body is provided with an annular groove, a ring block is provided inside the annular groove, a slot is provided at the upper end of the ring block, an insert block is provided at the lower end of the half valve core, and a collection box is provided through the lower end of the valve body.

5. The self-balancing ball valve for high-temperature media according to claim 4, characterized in that: The ring block is slidably connected to the ring groove, the insert block is plug-fitted to the slot, and the collection box is connected to the valve body via bolts.

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