Floating ball valve pressure stabilizing device

Abstract

The utility model discloses a floating ball valve pressure stabilizing device, which relates to the technical field of valves and comprises a first valve body, a floating ball body is arranged in the first valve body, valve seats are arranged at the left end and the right end of the floating ball body, a valve rod is fixedly connected to the top of the outer surface of the floating ball body, and the floating ball body and the valve rod are both rotationally connected with the first valve body. And a pressure stabilizing mechanism is arranged outside the first valve body. According to the floating ball valve, the first valve body, the floating ball body, the valve seat, the valve rod, the pressure stabilizing mechanism and the pressure gauge are arranged in a matched mode, in the actual process of the floating ball valve, air pressure increased in a short time can be transiently shunted, when the air pressure reaches a set value, automatic pressure relief is conducted, the interior of the floating ball valve is within a stable pressure range, and the service life of the floating ball valve is prolonged. The floating ball valve is prevented from being always in a state with a large pressure value, so that the situation that a ball body in the floating ball valve deviates or even is damaged is avoided, normal use of the floating ball valve is guaranteed, and the service life of the floating ball valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a floating ball valve pressure stabilizing device. Background Art

[0002] A floating ball valve is a type of valve. The ball of a floating ball valve floats. Under the pressure of the medium, the ball can produce a certain displacement and press tightly against the sealing surface of the outlet end, thereby ensuring the sealing of the outlet end. The main features of the floating ball valve are its compact structure, reliable sealing, simple structure, and easy maintenance. The sealing surface and the spherical surface are often in a closed state and are not easily eroded by the medium. It is suitable for general working media such as water, solvents, acids and natural gas.

[0003] The existing patent document with authorization announcement number CN209725274U states that when the pressure in the valve is higher than the pressure of the compression spring on the sealing plate, the sealing plate opens to allow the gas in the valve to enter the gas tank, which can temporarily divert the increased air pressure in a short period of time, and monitor and feedback the pressure in the gas tank through a pressure gauge, thereby gaining more time for the next step of processing. However, in actual practice, the above-mentioned floating ball valve only temporarily diverts the increased air pressure in a short period of time, and transmits the pressure value back to the staff for timely processing. However, in this process, the floating ball valve is always in a state of high pressure value, and the ball in the floating ball valve is prone to displacement or even damage, affecting the normal use of the floating ball valve. Utility Model Content

[0004] In order to solve the above technical defects, the purpose of the utility model is to provide a floating ball valve pressure stabilizing device, which can prevent the ball in the floating ball valve from being offset or even damaged, thereby ensuring the normal use of the floating ball valve and extending the service life of the floating ball valve.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a floating ball valve pressure stabilizing device, including a first valve body, a floating ball is arranged inside the first valve body, valve seats are arranged at both ends of the floating ball, a valve stem is fixedly connected to the top of the outer surface of the floating ball, the floating ball and the valve stem are rotatably connected to the first valve body, a pressure stabilizing mechanism is arranged outside the first valve body, the pressure stabilizing mechanism includes a second valve body fixedly connected to the first valve body by bolts, the inner wall of the second valve body is connected to a gas tank, a pressure gauge is installed on the upper surface of the gas tank, the outer surface of the gas tank is connected to a pressure relief pipe, the inner wall of the pressure relief pipe is fixedly connected to a support ring, a side surface of the support ring is installed with a plurality of dampers arranged in a circle, the inner wall of the gas tank is slidably connected to a sealing block, each damper is fixedly connected to the sealing block, the outer surface of each damper is sleeved with a first spring, and the support ring and the sealing block are fixedly connected to the first spring.

[0006] Furthermore, the inner wall of the valve stem is slidably connected to a limit rod, the limit rod is slidably connected to the first valve body, the outer surface of the limit rod is fixedly connected to a fixing ring, the limit rod fixedly supports the fixing ring, and the limit rod can slide in the valve stem and the inner wall of the first valve body, thereby achieving the limitation of the rotated valve stem.

[0007] A second spring is sleeved on the outer surface of the limit rod, and the second spring is fixedly connected to the valve stem, and the second spring is fixedly connected to the fixing ring. The top and bottom ends of the second spring are respectively connected to the valve stem and the fixing ring. Pulling the valve stem upward can drive the fixing ring to move upward and compress the second spring to cause it to produce elastic deformation. Loosening the valve stem can drive the fixing ring to return to its initial position under the resetting action of the second spring.

[0008] A fixing rod is fixedly connected to the bottom of the outer surface of the floating sphere, a bearing is inlaid on the inner wall of the first valve body, and the outer surface of the fixing rod is fixedly connected to the inner ring of the bearing. By setting the fixing rod and the bearing, the floating sphere can be made more stable when rotating, avoiding jamming and swinging of the floating sphere during use.

[0009] Two sealing rings are arranged inside the first valve body, and the floating ball and the valve seat are both in contact with the sealing rings. The sealing rings can be used to seal the connection between the floating ball and the valve seat to prevent leakage of the medium.

[0010] A plurality of telescopic rods arranged in a circle are fixedly connected to the side surfaces of the two sealing rings that are away from each other, the first valve body and the second valve body are fixedly connected to the telescopic rods, a third spring is sleeved on the outer surface of each telescopic rod, the first valve body and the second valve body are fixedly connected to the third spring, the telescopic rod guides the movement of the sealing ring, the third spring is in a compressed state, and can exert a certain thrust on the sealing ring, so that the sealing ring is always in close fit with the floating ball and the valve seat to ensure the sealing performance.

[0011] The right end of the first valve body is fixedly connected with a first flange, and the left end of the second valve body is fixedly connected with a second flange. By providing the first flange and the second flange, the floating ball valve can be conveniently connected to an external medium delivery pipeline.

[0012] An intercepting net is arranged on the inner wall of the second valve body, and a cleaning pipe is connected to the outer surface of the second valve body. A detachable sealing cover is installed on the inner wall of the cleaning pipe. Impurities contained in the transported medium can be intercepted by the intercepting net, and the intercepted impurities can be discharged from the second valve body through the cleaning pipe by removing the sealing cover.

[0013] The beneficial effects of the utility model are as follows: through the coordinated arrangement among the first valve body, the floating ball, the valve seat, the valve stem, the pressure stabilizing mechanism and the pressure gauge, the air pressure that increases in a short period of time can be temporarily diverted during the actual operation of the floating ball valve, and when the air pressure reaches the set value, the pressure can be automatically released, so that the interior of the floating ball valve is within a stable pressure range, and the floating ball valve is prevented from always being in a state of a large pressure value, thereby preventing the ball inside the floating ball valve from being offset or even damaged, thereby ensuring the normal use of the floating ball valve and extending the service life of the floating ball valve.

[0014] By providing a limit rod, a fixing ring and a second spring, the valve stem can be limited and fixed after rotation, so that the floating ball valve is more stable when in use; by providing a fixing rod and a bearing, the floating ball can be made more stable when rotating, avoiding jamming and swinging of the floating ball during use; by providing a sealing ring, a telescopic rod and a third spring, the connection between the floating ball and the valve seat can be sealed to prevent leakage of the medium; by providing a first flange and a second flange, the floating ball valve can be conveniently connected to an external medium conveying pipeline; by providing an intercepting net, a cleaning pipe and a sealing cover, impurities contained in the conveyed medium can be intercepted, and the intercepted impurities can be centrally cleaned at intervals. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 for Figure 1 A cross-sectional view of

[0017] Figure 3 The local structure of the utility model is shown in FIG. Figure 1 .

[0018] Figure 4 The local structure of the utility model is shown in FIG. Figure 2 .

[0019] Figure 5 The local structure of the utility model is shown in FIG. Figure 3 .

[0020] Figure 6 It is a schematic diagram of the internal structure of the pressure relief pipe in the utility model.

[0021] Figure 7 The local structure of the utility model is shown in FIG. Figure 4 .

[0022] In the figure: 1. first valve body; 2. floating ball; 3. valve seat; 4. valve stem; 5. pressure stabilizing mechanism; 501. second valve body; 502. gas tank; 503. pressure relief pipe; 504. support ring; 505. damper; 506. sealing block; 507. first spring; 6. pressure gauge; 7. limit rod; 8. fixing ring; 9. second spring; 10. sealing ring; 11. telescopic rod; 12. fixing rod; 13. bearing; 14. first flange; 15. second flange; 16. interception net; 17. cleaning pipe; 18. sealing cover; 19. third spring. DETAILED DESCRIPTION

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0024] As described in the background technology, in the actual process, the above-mentioned floating ball valve only temporarily diverts the air pressure that increases in a short period of time, and transmits the pressure value back to the staff for timely processing. However, in this process, the floating ball valve is always in a state of high pressure value, and the ball in the floating ball valve is prone to displacement or even damage, affecting the normal use of the floating ball valve. For this reason, this embodiment provides a floating ball valve pressure stabilizing device.

[0025] See also Figures 1 to 7 The present embodiment proposes a floating ball valve pressure stabilizing device, including a first valve body 1, a pressure stabilizing mechanism 5 is arranged outside the first valve body 1, the pressure stabilizing mechanism 5 includes a second valve body 501 fixedly connected to the first valve body 1 by bolts, a first flange 14 is fixedly connected to the right end of the first valve body 1, and a second flange 15 is fixedly connected to the left end of the second valve body 501. By arranging the first flange 14 and the second flange 15, the floating ball valve can be conveniently connected to an external medium delivery pipeline.

[0026] A floating ball 2 is arranged inside the first valve body 1 , valve seats 3 are arranged at both left and right ends of the floating ball 2 , a valve stem 4 is fixedly connected to the top of the outer surface of the floating ball 2 , and the floating ball 2 and the valve stem 4 are both rotatably connected to the first valve body 1 .

[0027] The first valve body 1 is connected to the second valve body 501 by bolts, and a seal is provided at the connection to prevent leakage of the transported medium. Driven by the valve stem 4, the floating ball 2 can rotate 0-90 degrees around the center of the valve stem 4 to complete the opening and closing function of the floating ball valve. The first valve body 1, the floating ball 2, the valve seat 3, the valve stem 4 and the second valve body 501 together constitute a floating ball valve, and the structure and connection method of each component are all existing technologies, which will not be repeated here.

[0028] The inner wall of the second valve body 501 is connected to a gas tank 502, and a pressure gauge 6 is installed on the upper surface of the gas tank 502. When the medium is transported in the second valve body 501, the medium can enter the gas tank 502 for a short diversion. The pressure gauge 6 can monitor the pressure of the medium during transportation, which is convenient for the staff to check.

[0029] The inner wall of the valve stem 4 is slidably connected to a limit rod 7, which is slidably connected to the first valve body 1. The outer surface of the limit rod 7 is fixedly connected to a fixing ring 8, which provides fixed support for the fixing ring 8. The limit rod 7 can slide in the inner wall of the valve stem 4 and the first valve body 1, thereby achieving the limitation of the valve stem 4 after rotation.

[0030] The outer surface of the limiting rod 7 is sleeved with a second spring 9, which is fixedly connected to the valve stem 4. The second spring 9 is fixedly connected to the fixing ring 8. The top and bottom ends of the second spring 9 are respectively connected to the valve stem 4 and the fixing ring 8. Pulling the valve stem 4 upward can drive the fixing ring 8 to move upward and compress the second spring 9 to cause it to produce elastic deformation. Loosening the valve stem 4 can drive the fixing ring 8 to return to its initial position under the resetting action of the second spring 9.

[0031] A fixing rod 12 is fixedly connected to the bottom of the outer surface of the floating sphere 2, a bearing 13 is inlaid on the inner wall of the first valve body 1, and the outer surface of the fixing rod 12 is fixedly connected to the inner ring of the bearing 13. By setting the fixing rod 12 and the bearing 13, the floating sphere 2 can be made more stable when rotating, avoiding jamming and swinging of the floating sphere 2 during use.

[0032] The outer surface of the gas tank 502 is connected to a pressure relief pipe 503, and the inner wall of the pressure relief pipe 503 is fixedly connected to a support ring 504. A plurality of dampers 505 arranged in a circle are installed on one side of the support ring 504. A sealing block 506 is slidably connected to the inner wall of the gas tank 502, and each damper 505 is fixedly connected to the sealing block 506. The outer surface of each damper 505 is sleeved with a first spring 507, and the support ring 504 and the sealing block 506 are fixedly connected to the first spring 507.

[0033] The inner wall aperture value of the pressure relief pipe 503 is greater than the diameter value of the sealing block 506. When the pressure of the transported medium is too large and reaches the set pressure value, the sealing block 506 can be driven to gradually slide from the inner wall of the gas tank 502. The sealing block 506 compresses the damper 505 and the first spring 507, causing the first spring 507 to produce elastic deformation, so that the medium flows out from the gap between the pressure relief pipe 503 and the sealing block 506.

[0034] Under the damping effect of the damper 505 and the restoring effect of the first spring 507 , the pressure on the sealing block 506 is buffered, and the sealing block 506 is forced to return to the initial position to reseal the gas tank 502 .

[0035] Two sealing rings 10 are arranged inside the first valve body 1, and the floating ball 2 and the valve seat 3 are in contact with the sealing ring 10. A plurality of telescopic rods 11 arranged in a circle are fixedly connected to the side surfaces of the two sealing rings 10 that are away from each other. The first valve body 1 and the second valve body 501 are fixedly connected to the telescopic rods 11, and a third spring 19 is sleeved on the outer surface of each telescopic rod 11. The first valve body 1 and the second valve body 501 are fixedly connected to the third spring 19.

[0036] The sealing ring 10 can be used to seal the connection between the floating ball 2 and the valve seat 3 to prevent leakage of the medium. The telescopic rod 11 guides the movement of the sealing ring 10. Here, the third spring 19 is in a compressed state and can apply a certain thrust to the sealing ring 10, so that the sealing ring 10 is always in close contact with the floating ball 2 and the valve seat 3 to ensure sealing.

[0037] The specific numbers of the damper 505, the first spring 507, the telescopic rod 11 and the third spring 19 can be increased or decreased according to actual production conditions.

[0038] The inner wall of the second valve body 501 is provided with an intercepting net 16, and the outer surface of the second valve body 501 is connected to a cleaning pipe 17. The inner wall of the cleaning pipe 17 is installed with a detachable sealing cover 18. The intercepting net 16 can intercept impurities contained in the transported medium. By removing the sealing cover 18, the intercepted impurities can be discharged from the second valve body 501 through the cleaning pipe 17.

[0039] The components in the drawings of the present invention are only for style reference and are not used as specific size standards. The specific sizes are determined according to the actual requirements of production.

[0040] When the floating ball valve pressure stabilizing device is used, the valve stem 4 is rotated, and the floating ball 2 can rotate 0-90 degrees around the center of the valve stem 4 under the drive of the valve stem 4, completing the opening and closing function of the floating ball valve and realizing the delivery of the medium. When the medium is delivered in the second valve body 501, the medium can enter the gas tank 502 for a short diversion. The pressure gauge 6 can be used to monitor the pressure during the delivery of the medium, which is convenient for the staff to check. When the pressure of the delivered medium is too large and reaches the set pressure value, the sealing block 506 can be driven to gradually slide from the inner wall of the gas tank 502. The sealing block 506 compresses the damper 505 and the first spring 507, causing the first spring 507 to produce elastic deformation, so that the medium flows out from the gap between the pressure relief pipe 503 and the sealing block 506, and then the medium flows out from the support ring 504. 506 is cushioned by the damping effect of the damper 505 and the resetting effect of the first spring 507, and the sealing block 506 is prompted to return to the initial position, and the gas tank 502 is re-sealed to complete the automatic pressure relief of the floating ball valve. The utility model can temporarily divert the air pressure that increases in a short period of time during the actual process of the floating ball valve, and automatically relieve the pressure when the air pressure reaches the set value, so that the inside of the floating ball valve is within a stable pressure range, avoiding the floating ball valve always being in a state of a large pressure value, thereby avoiding the ball in the floating ball valve from being offset or even damaged, thereby ensuring the normal use of the floating ball valve and extending the service life of the floating ball valve.

Claims

1. A floating ball valve pressure stabilizing device, comprising a first valve body (1), characterized in that: A floating ball (2) is arranged inside the first valve body (1), valve seats (3) are arranged at both left and right ends of the floating ball (2), a valve stem (4) is fixedly connected to the top of the outer surface of the floating ball (2), the floating ball (2) and the valve stem (4) are both rotatably connected to the first valve body (1), and a pressure stabilizing mechanism (5) is arranged outside the first valve body (1), the pressure stabilizing mechanism (5) comprises a second valve body (501) fixedly connected to the first valve body (1) by bolts; The inner wall of the second valve body (501) is connected to a gas tank (502), a pressure gauge (6) is installed on the upper surface of the gas tank (502), the outer surface of the gas tank (502) is connected to a pressure relief pipe (503), the inner wall of the pressure relief pipe (503) is fixedly connected to a support ring (504), a side surface of the support ring (504) is installed with a plurality of dampers (505) arranged in a circumference, the inner wall of the gas tank (502) is slidably connected to a sealing block (506), each damper (505) is fixedly connected to the sealing block (506), the outer surface of each damper (505) is sleeved with a first spring (507), and the support ring (504) and the sealing block (506) are fixedly connected to the first spring (507).

2. A floating ball valve pressure stabilizing device according to claim 1, characterized in that: The inner wall of the valve stem (4) is slidably connected to a limit rod (7), the limit rod (7) is slidably connected to the first valve body (1), and the outer surface of the limit rod (7) is fixedly connected to a fixing ring (8).

3. A floating ball valve pressure stabilizing device according to claim 2, characterized in that: The outer surface of the limiting rod (7) is sleeved with a second spring (9), the second spring (9) is fixedly connected to the valve stem (4), and the second spring (9) is fixedly connected to the fixing ring (8).

4. A floating ball valve pressure stabilizing device according to claim 1, characterized in that: A fixing rod (12) is fixedly connected to the bottom of the outer surface of the floating sphere (2), a bearing (13) is inlaid on the inner wall of the first valve body (1), and the outer surface of the fixing rod (12) is fixedly connected to the inner ring of the bearing (13).

5. The floating ball valve pressure stabilizing device according to claim 1, characterized in that: Two sealing rings (10) are arranged inside the first valve body (1), and the floating ball (2) and the valve seat (3) are both in contact with the sealing rings (10).

6. A floating ball valve pressure stabilizing device according to claim 5, characterized in that: A plurality of telescopic rods (11) arranged in a circumferential pattern are fixedly connected to the side surfaces of the two sealing rings (10) that are away from each other; the first valve body (1) and the second valve body (501) are fixedly connected to the telescopic rods (11); a third spring (19) is sleeved on the outer surface of each telescopic rod (11); and the first valve body (1) and the second valve body (501) are fixedly connected to the third spring (19).

7. A floating ball valve pressure stabilizing device according to claim 1, characterized in that: The right end of the first valve body (1) is fixedly connected to a first flange (14), and the left end of the second valve body (501) is fixedly connected to a second flange (15).

8. The floating ball valve pressure stabilizing device according to claim 1, characterized in that: The inner wall of the second valve body (501) is provided with an interception net (16), the outer surface of the second valve body (501) is connected to a cleaning pipe (17), and the inner wall of the cleaning pipe (17) is installed with a detachable sealing cover (18).

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