Leak-proof gas pipeline ball valve

Abstract

The utility model discloses a leakproof gas pipeline ball valve, relates to the field of ball valves, and aims to solve the technical problems that the leakproof gas pipeline ball valve comprises a valve body assembly and a bayonet socket, a valve rod is rotatably inserted in the bayonet socket, a valve element is fixedly installed at the bottom end of the valve rod, and a sealing rubber ring is embedded in the inner wall of the valve body assembly; a conical sealing ring is arranged on the inner wall of the valve body assembly. The leakproof gas pipeline ball valve has the advantages that the valve rod and the valve element are made to rotate through the driving assembly, the interior of the valve body assembly is closed, the gas flow is adjusted, the sealing rubber ring and the conical sealing ring make contact with the surface of the valve element, and then the gap between the valve element and the valve body assembly is sealed; and the surface of the sealing plug is in close contact with the inner wall of the conical sealing ring under the elastic force action of the elastic damping mechanism, and the sealing plug is in contact with the conical sealing ring, so that gas leakage of the laboratory is prevented, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, and more specifically to a leakage-proof gas pipeline ball valve. Background Art

[0002] A ball valve is a fluid control valve that controls the flow of the medium by rotating the ball. Ball valves have the advantages of good sealing performance, fast opening and closing, and long service life. They are widely used in industries such as petroleum, chemical industry, electric power, and urban water supply. Ball valves are divided into one-way ball valves and two-way ball valves, and are classified by different calibers, materials, and working pressures.

[0003] A Chinese patent with publication number CN216923287U discloses a ball valve for a laboratory gas pipeline, comprising a transport pipe, a mounting platform movably mounted at the center of the top of the transport pipe, the bottom of the mounting platform being inserted into the interior of the transport pipe, spring arc grooves being provided on both sides of the outer surface of the bottom of the mounting platform, and compression springs being movably mounted inside the spring arc grooves;

[0004] With respect to the above-mentioned public technology, when the ball valve is closed and opened, its movable ball will contact the inner wall of the transport pipe. The long-term contact and friction between the movable ball and the inner wall of the transport pipe will cause a gap between the transport pipe and the ball, which will lead to gas leakage when closed and poor sealing effect. Laboratory gases may contain toxic and harmful substances. If harmful gases leak from the gap when closing is required, there will be certain safety hazards.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model aims to provide a leakage-proof gas pipeline ball valve.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions: a leakage-proof gas pipeline ball valve, comprising a valve body assembly and a socket, a valve stem is rotatably plugged into the socket, a valve core is fixedly installed on the bottom end of the valve stem, a sealing rubber ring is embedded in the inner wall of the valve body assembly, a conical sealing ring is arranged on the inner wall of the valve body assembly, an elastic damping mechanism is arranged inside the valve body assembly and on the right side of the conical sealing ring, and a sealing plug is fixedly installed on the left end of the elastic damping mechanism, a shell is arranged on the top surface of the socket, and a driving assembly is arranged inside the shell and on the top end of the valve stem.

[0008] The utility model is further configured as follows: the valve body assembly comprises a transport valve body, a bearing seat is arranged on the top surface of the valve body assembly, the transport valve body and the bearing seat are connected, and flanges for connection are fixedly installed on the left and right ends of the transport valve body.

[0009] The utility model is further configured as follows: a plug socket is plugged and installed inside the bearing seat, and a fixing bolt is plugged and installed between the bearing seat and the plug socket.

[0010] The utility model is further configured as follows: the elastic damping mechanism includes a frame body, the front and rear inner walls of the transport valve body are fixedly installed with the frame body, a movable rod is plugged and installed inside the frame body, a limiting plate is fixedly installed on the right end of the movable rod, a spring is sleeved on the surface of the movable rod, and a sealing plug is fixedly installed on the left end of the movable rod.

[0011] The utility model is further configured as follows: the driving assembly includes a rotating shaft, the rotating shaft is rotatably mounted on the rear inner wall of the shell, the output end of the rotating shaft passes through the front side wall of the shell and is fixedly mounted with a handle, a worm is sleeved on the surface of the rotating shaft, a worm wheel is fixedly mounted on the top end of the valve stem, and the worm wheel and the worm are meshingly mounted.

[0012] The utility model is further configured as follows: the left end of the sealing rubber ring and the left end of the conical sealing ring are both arc-shaped, and the left ends of the sealing rubber ring and the conical sealing ring are fitted to the surface of the valve core, and the sealing rubber ring and the conical sealing ring are both made of corrosion-resistant rubber material.

[0013] The utility model is further configured as follows: the sealing plug is in a frustum shape, the sealing plug is slidably installed inside the conical sealing ring through a movable rod and a frame, and the surface of the sealing plug and the inner wall of the conical sealing ring are fitted.

[0014] In summary, the utility model has the following beneficial effects:

[0015] The sealing plug is pushed to move laterally inside the conical sealing ring under the pressure of laboratory gas, so that the elastic damping mechanism is compressed, thereby setting a one-way flow of air. The valve stem and the valve core are rotated by the driving assembly to close the interior of the valve body assembly and adjust the gas flow rate. The sealing rubber ring and the conical sealing ring are in contact with the surface of the valve core, so that the gap between the valve core and the valve body assembly is sealed. The elastic force of the elastic damping mechanism makes the surface of the sealing plug and the inner wall of the conical sealing ring in close contact. The contact between the sealing plug and the conical sealing ring prevents laboratory gas leakage and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0017] Figure 2 It is a partial front cross-sectional view of the utility model;

[0018] Figure 3It is a front cross-sectional view of the utility model;

[0019] Figure 4 It is an enlarged view of the A part of the present utility model.

[0020] Figure numerals: 1. valve body assembly; 101. transport valve body; 102. flange; 103. bearing seat; 2. plug-in seat; 3. fixing bolt; 4. valve stem; 5. valve core; 6. sealing ring; 7. conical sealing ring; 8. elastic damping mechanism; 801. frame; 802. movable rod; 803. limit plate; 804. spring; 9. sealing plug; 10. housing; 11. driving assembly; 1101. rotating shaft; 1102. handle; 1103. worm; 1104. worm wheel. DETAILED DESCRIPTION

[0021] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] A leak-proof gas pipeline ball valve, reference Figures 1 to 4 As shown, it includes a valve body assembly 1 and a socket 2, a valve stem 4 is rotatably plugged into the socket 2, a valve core 5 is fixedly installed at the bottom end of the valve stem 4, a sealing rubber ring 6 is embedded in the inner wall of the valve body assembly 1, a conical sealing ring 7 is arranged on the inner wall of the valve body assembly 1, an elastic damping mechanism 8 is arranged inside the valve body assembly 1 and on the right side of the conical sealing ring 7, and a sealing plug 9 is fixedly installed at the left end of the elastic damping mechanism 8, a shell 10 is arranged on the top surface of the socket 2, and a driving assembly 11 is arranged inside the shell 10 and at the top end of the valve stem 4.

[0023] In the above embodiment: the valve body assembly 1 is connected to the gas supply pipeline of the laboratory, and the valve stem 4 and the valve core 5 are driven to rotate by the driving assembly 11, so that the interior of the valve body assembly 1 is in a connected state through the valve core 5, and the laboratory gas flows inside the valve body assembly 1 and then flows from the left side of the valve body assembly 1 to the right side, so that under the pressure of the laboratory gas, the sealing plug 9 is pushed to move laterally inside the conical sealing ring 7 to compress the elastic damping mechanism 8, thereby making the air unidirectional flow setting, and the valve stem 4 and the valve core 5 are rotated by the driving assembly 11, so that the interior of the valve body assembly 1 is closed, and the sealing rubber ring 6 and the conical sealing ring 7 are in contact with the surface of the valve core 5, so that the gap between the valve core 5 and the valve body assembly 1 is sealed, and the surface of the sealing plug 9 and the inner wall of the conical sealing ring 7 are in close contact under the elastic force of the elastic damping mechanism 8, and the sealing plug 9 is in contact with the conical sealing ring 7 to prevent the leakage of laboratory gas, thereby improving safety.

[0024] refer to Figure 1 , Figure 2 , Figure 3As shown, the valve body assembly 1 includes a transport valve body 101, a bearing seat 103 is arranged on the top surface of the valve body assembly 1, the transport valve body 101 and the bearing seat 103 are connected, and flanges 102 for connection are fixedly installed on the left and right ends of the transport valve body 101.

[0025] In the above embodiment: the ball valve is conveniently connected to the gas supply pipeline of the laboratory by means of the bearing seats 103 on the left and right sides of the transport valve body 101 .

[0026] refer to Figure 1 , Figure 2 , Figure 3 As shown, a plug socket 2 is plugged and installed inside the bearing seat 103, and a fixing bolt 3 is plugged and installed between the bearing seat 103 and the plug socket 2.

[0027] In the above embodiment: the plug socket 2 and the bearing seat 103 are fixedly connected by fixing the bolt 2, so that the valve stem 4 and the valve core 5 are easily maintained.

[0028] refer to Figure 3 As shown, the elastic damping mechanism 8 includes a frame 801, and the frame 801 is fixedly installed on the inner walls of the front and rear sides of the transport valve body 101. A movable rod 802 is inserted and installed inside the frame 801. A limiting plate 803 is fixedly installed on the right end of the movable rod 802. A spring 804 is sleeved on the surface of the movable rod 802, and a sealing plug 9 is fixedly installed on the left end of the movable rod 802.

[0029] In the above embodiment: the laboratory gas flows inside the valve body assembly 1 so as to push the sealing plug 9 to drive the movable rod 802 to move along the frame 801, thereby compressing the spring 804, so that the surface of the sealing plug 9 and the inner wall of the conical sealing ring 7 are separated, thereby forming a passage to realize the flow of laboratory gas. When the inside of the valve body assembly 1 is closed, the elastic force of the spring 804 causes the sealing plug 9 to drive the movable rod 802 to move laterally so that the surface of the sealing plug 9 contacts the inner wall of the conical sealing ring 7, thereby preventing the leakage of laboratory gas and improving the safety performance.

[0030] refer to Figure 2 , Figure 3 As shown, the driving assembly 11 includes a rotating shaft 1101, and the rotating shaft 1101 is rotatably installed on the inner wall of the rear side of the shell 10. The output end of the rotating shaft 1101 passes through the front side wall of the shell 10 and is fixedly installed with a handle 1102. The surface of the rotating shaft 1101 is sleeved with a worm 1103, and a worm wheel 1104 is fixedly installed on the top of the valve stem 4, and the worm wheel 1104 and the worm 1103 are meshingly installed.

[0031] In the above embodiment: the handle 1102 drives the rotating shaft 1101 and the worm 1103 to rotate, the worm 1103 and the worm wheel 1104 mesh to drive the worm wheel 1104 to rotate, and the worm wheel 1104 drives the valve stem 4 and the valve core 5 to rotate.

[0032] refer to Figure 3 , Figure 4 As shown, the left end of the sealing rubber ring 6 and the left end of the conical sealing ring 7 are both arc-shaped, and the left ends of the sealing rubber ring 6 and the conical sealing ring 7 are fitted to the surface of the valve core 5, and the sealing rubber ring 6 and the conical sealing ring 7 are both made of corrosion-resistant rubber material.

[0033] In the above embodiment, the gap between the valve core 5 and the transport valve body 101 is sealed by the sealing rubber ring 6 and the left end of the conical sealing ring 7 being fitted to the surface of the valve core 5 .

[0034] refer to Figure 3 , Figure 4 As shown, the sealing plug 9 is in a frustum shape, and is slidably installed inside the conical sealing ring 7 through a movable rod 802 and a frame 801, and the surface of the sealing plug 9 and the inner wall of the conical sealing ring 7 are fitted together.

[0035] In the above embodiment: the movable rod 802 and the frame 801 are movably plugged together so as to provide a limit guide for the sealing plug 9 when it moves horizontally.

[0036] Working principle:

[0037] The valve body assembly 1 is connected to the gas supply pipeline of the laboratory, and the driving assembly 11 is used to drive the valve stem 4 and the valve core 5 to rotate, so that the interior of the valve body assembly 1 is in a connected state through the valve core 5. The laboratory gas flows inside the valve body assembly 1 and then flows from the left side of the valve body assembly 1 to the right side, so that the sealing plug 9 is pushed to move laterally inside the conical sealing ring 7 under the pressure of the laboratory gas, so that the elastic damping mechanism 8 is compressed, thereby making the air unidirectional flow setting, and the valve stem 4 and the valve core 5 are rotated by the driving assembly 11, so that the interior of the valve body assembly 1 is closed, and the sealing rubber ring 6 and the conical sealing ring 7 are in contact with the surface of the valve core 5, so that the gap between the valve core 5 and the valve body assembly 1 is sealed, and the surface of the sealing plug 9 and the inner wall of the conical sealing ring 7 are in close contact under the elastic force of the elastic damping mechanism 8, and the sealing plug 9 is in contact with the conical sealing ring 7 to prevent laboratory gas leakage, thereby improving safety.

[0038] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A leak-proof gas pipeline ball valve, characterized in that: The invention comprises a valve body assembly (1) and a socket (2), wherein a valve stem (4) is rotatably plugged into the socket (2), a valve core (5) is fixedly mounted on the bottom end of the valve stem (4), a sealing rubber ring (6) is embedded in the inner wall of the valve body assembly (1), a conical sealing ring (7) is arranged on the inner wall of the valve body assembly (1), an elastic damping mechanism (8) is arranged inside the valve body assembly (1) and on the right side of the conical sealing ring (7), and a sealing plug (9) is fixedly mounted on the left end of the elastic damping mechanism (8), a shell (10) is arranged on the top surface of the socket (2), and a driving assembly (11) is arranged inside the shell (10) and at the top end of the valve stem (4).

2. The anti-leakage gas pipeline ball valve according to claim 1, characterized in that: The valve body assembly (1) comprises a transport valve body (101), a bearing seat (103) is arranged on the top surface of the valve body assembly (1), the transport valve body (101) and the bearing seat (103) are arranged in communication, and flange plates (102) for connection are fixedly installed at the left and right ends of the transport valve body (101).

3. The anti-leakage gas pipeline ball valve according to claim 2 is characterized in that: A plug-in socket (2) is plugged and installed inside the bearing seat (103), and a fixing bolt (3) is plugged and installed between the bearing seat (103) and the plug-in socket (2).

4. The anti-leakage gas pipeline ball valve according to claim 2, characterized in that: The elastic damping mechanism (8) comprises a frame (801), the frame (801) being fixedly mounted on the inner walls at the front and rear sides of the transport valve body (101), a movable rod (802) being inserted and mounted inside the frame (801), a limiting plate (803) being fixedly mounted on the right end of the movable rod (802), a spring (804) being sleeved on the surface of the movable rod (802), and a sealing plug (9) being fixedly mounted on the left end of the movable rod (802).

5. The anti-leakage gas pipeline ball valve according to claim 1, characterized in that: The driving assembly (11) comprises a rotating shaft (1101), the rotating shaft (1101) is rotatably mounted on the rear inner wall of the housing (10), the output end of the rotating shaft (1101) passes through the front wall of the housing (10) and is fixedly mounted with a handle (1102), the surface of the rotating shaft (1101) is sleeved with a worm (1103), the top end of the valve stem (4) is fixedly mounted with a worm wheel (1104), and the worm wheel (1104) and the worm wheel (1103) are meshingly mounted.

6. The anti-leakage gas pipeline ball valve according to claim 1, characterized in that: The left end of the sealing rubber ring (6) and the left end of the conical sealing ring (7) are both in an arc shape, and the left ends of the sealing rubber ring (6) and the conical sealing ring (7) are arranged in contact with the surface of the valve core (5), and the sealing rubber ring (6) and the conical sealing ring (7) are both made of corrosion-resistant rubber material.

7. The anti-leakage gas pipeline ball valve according to claim 4, characterized in that: The sealing plug (9) is in the shape of a cone. The sealing plug (9) is slidably mounted inside the conical sealing ring (7) via a movable rod (802) and a frame (801), and the surface of the sealing plug (9) and the inner wall of the conical sealing ring (7) are fitted together.

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