Anti-corrosion gas valve

Abstract

The utility model relates to the field of gas valves, in particular to an anti-corrosion gas valve which comprises a valve body, a hand wheel, an adjusting mechanism and a sealing assembly, the adjusting mechanism comprises a threaded rod, a rotating gear, a driven gear, a driven rod, a limiting wheel and a connecting rope, the hand wheel is fixedly connected with the threaded rod, and the rotating gear is fixedly connected with the threaded rod. The driven gear is meshed with the rotating gear, the driven rod is fixedly connected with the driven gear, the limiting wheel is fixedly connected with the driven rod and located on the outer surface wall of the driven rod, the connecting rope is fixedly connected with the limiting wheel and wound around the limiting wheel, and by rotating the hand wheel, the threaded rod is driven to rotate, and meanwhile the rotating gear is driven to rotate. And therefore, a driven gear is driven to rotate, a limiting wheel is driven to rotate, the length of a connecting rope is adjusted, an adjusting groove is closed through a sealing assembly, and corrosion of gas to a fluororubber sealing ring is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas valves, in particular to an anti-corrosion gas valve. Background Art

[0002] A gas valve is a new type of safety supporting device for gas pipeline projects, used to cut off, connect and regulate the gas in the pipeline, with good control characteristics and closing and sealing performance, and is applicable to various gas medium pipelines such as city gas, liquefied petroleum gas, natural gas and oxygen.

[0003] A gas valve body with anti-corrosion function disclosed in the patent with the publication number of CN213039830U in the prior art, by rotating the handwheel, the handwheel drives the sliding bar to rotate through the rotating shaft, the driving gear and the driven gear, and then drives the threaded pipe to rotate, so that when the threaded pipe drives the ceramic valve plate and the fluororubber sealing ring to move upward to open the valve groove, while the threaded pipe drives the ceramic valve plate to move upward, it drives the fixed block and the traction rod to move upward, and then through the connecting rod, the ceramic baffle is pulled to move along the slide groove to one side of the air passage, so that the gas discharged from the air inlet blows on the ceramic baffle. However, in the above process, the ceramic baffle blocks the erosion of the fluororubber sealing ring by the gas, but the gas in the flowing state will still erode the fluororubber sealing ring.

[0004] To solve the above problems, a new type of anti-corrosion gas valve is proposed to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an anti-corrosion gas valve, aiming to solve the problem that in the prior art, the ceramic baffle blocks the erosion of the fluororubber sealing ring by the gas, but the gas in the flowing state will still erode the fluororubber sealing ring.

[0006] To achieve the above purpose, the utility model provides an anti-corrosion gas valve, including a valve body and a handwheel. An air inlet passage is arranged on the side wall of the valve body.

[0007] It further includes an adjusting mechanism, a closing assembly and a locking assembly. The valve body is further provided with a sliding groove and an adjusting groove. The adjusting groove is located in the middle of the valve body, and the sliding groove is located on both sides of the adjusting groove. The adjusting mechanism is located in the adjusting groove and the sliding groove. The closing assembly is located on one side of the adjusting mechanism, and the locking assembly is located on one side of the handwheel.

[0008] The adjusting mechanism includes a threaded rod, a rotating gear, a driven gear, a driven rod, a connecting piece, a limiting wheel, a connecting rope, and a sliding assembly. The threaded rod is fixedly connected to the handwheel and is located below the handwheel. The rotating gear is fixedly connected to the threaded rod and is located on the outer wall of the threaded rod. The driven gear meshes with the rotating gear. The driven rod is fixedly connected to the driven gear and is located inside the driven gear. The two ends of the driven rod are rotatably connected to the valve body through the connecting piece. The limiting wheel is fixedly connected to the driven rod and is located on the outer wall of the driven rod. The connecting rope is fixedly connected to the limiting wheel and is wound around the limiting wheel.

[0009] Wherein, the sliding assembly includes a fixed shaft, a sealed bearing, and a pulley. The fixed shaft is fixedly connected to the valve body and is located in the sliding groove. The sealed bearing is fixedly connected to the fixed shaft and is located on the outer wall of the fixed shaft. The pulley is fixedly connected to the sealed bearing and is located on the outer wall of the sealed bearing. The connecting rope is wound around the pulley.

[0010] Wherein, the connecting piece includes a bearing, a sealing ring, and a protective shell. The bearing is fixedly connected to the valve body and is sleeved on the valve body. The bearing is also fixedly connected to the driven rod. The protective shell is fixedly connected to the valve body and is located on one side of the bearing. The sealing ring is located between the bearing and the protective shell.

[0011] Wherein, the closing assembly includes a closing plate, a rotating shaft, a rotating ring, and a connecting column. The connecting column is fixedly connected to the connecting rope and is located at the end of the connecting rope away from the limiting wheel. The closing plate is fixedly connected to the connecting column and is located on the side of the connecting column away from the connecting rope. The rotating shaft is fixedly connected to the closing plate and is located on one side of the closing plate. The rotating ring is rotatably connected to the rotating shaft and is located on the outer wall of the rotating shaft. The rotating ring is fixedly connected to the valve body.

[0012] Wherein, the closing assembly further includes a ceramic plate. The ceramic plate is fixedly connected to the closing plate and is located on the side of the closing plate close to the air inlet passage.

[0013] Wherein, the locking assembly includes a chain and a locking ring. The chain is fixedly connected to the handwheel and is located on one side of the handwheel. The locking ring is fixedly connected to the valve body and is located above the valve body.

[0014] An anti-corrosion gas valve of the present utility model includes a valve body, a handwheel, an adjusting mechanism, and a closing assembly. The adjusting mechanism includes a threaded rod, a rotating gear, a driven gear, a driven rod, a limiting wheel, and a connecting rope. The handwheel is fixedly connected to the threaded rod, the rotating gear is fixedly connected to the threaded rod, the driven gear meshes with the rotating gear, the driven rod is fixedly connected to the driven gear, the limiting wheel is fixedly connected to the driven rod and is located on the outer wall of the driven rod, and the connecting rope is fixedly connected to the limiting wheel and wound around the limiting wheel. By rotating the handwheel, the threaded rod is driven to rotate, and at the same time, the rotating gear is driven to rotate, thereby driving the driven gear to rotate, and also driving the limiting wheel to rotate, so as to adjust the length of the connecting rope, and the closing assembly closes the adjusting groove, thereby reducing the erosion of the gas on the fluororubber sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the internal structure of an anti-corrosion gas valve provided by the present utility model.

[0017] Figure 2 It is another schematic diagram of the internal structure of an anti-corrosion gas valve provided by the present utility model.

[0018] Figure 3 It is provided by the present utility model Figure 2 The partial enlarged view of A in

[0019] Figure 4 It is the front view of an anti-corrosion gas valve provided by the present utility model.

[0020] Figure 5 It is provided by the present utility model Figure 4 The cross-sectional view in the B-B direction in

[0021] Figure 6 It is the front view of the connecting piece provided by the present utility model.

[0022] Figure 7 It is provided by the present utility model Figure 6 The cross-sectional view in the C-C direction in

[0023] Figure 8 It is the schematic diagram of the structure of the second embodiment provided by the present utility model.

[0024] 101 - Valve body, 102 - Handwheel, 103 - Sealing component, 104 - Threaded rod, 105 - Rotating gear, 106 - Driven gear, 107 - Driven rod, 108 - Connecting piece, 109 - Limiting wheel, 110 - Connecting rope, 111 - Sliding component, 112 - Fixed shaft, 113 - Sealing bearing, 114 - Pulley, 115 - Bearing, 116 - Sealing ring, 117 - Protective shell, 118 - Sealing plate, 119 - Rotating shaft, 120 - Rotating ring, 121 - Connecting column, 122 - Ceramic plate, 123 - Air inlet channel, 124 - Sliding groove, 125 - Adjusting groove, 126 -, 201 - Chain, 202 - Locking ring. Specific embodiments

[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0026] First embodiment:

[0027] Please refer to Figures 1 to 7 , Figure 1 which is a schematic diagram of the internal structure of an anti - corrosion gas valve provided by the present invention, Figure 2 which is another schematic diagram of the internal structure of an anti - corrosion gas valve provided by the present invention, Figure 3 which is the Figure 2 local enlarged view at A in Figure 4 which is the front view of an anti - corrosion gas valve provided by the present invention, Figure 5 which is the Figure 4 cross - sectional view in the B - B direction in Figure 6 which is the front view of the connecting piece provided by the present invention, Figure 7 which is the Figure 6 cross - sectional view in the C - C direction in

[0028] The utility model provides an anti-corrosion gas valve, which includes a valve body 101, a handwheel 102, an adjusting mechanism and a closing component 103. The adjusting mechanism includes a threaded rod 104, a rotating gear 105, a driven gear 106, a driven rod 107, a connecting piece 108, a limiting wheel 109, a connecting rope 110 and a sliding component 111. The sliding component 111 includes a fixed shaft 112, a sealing bearing 113 and a pulley 114. The connecting piece 108 includes a bearing 115, a sealing ring 116 and a protective shell 117. The closing component 103 includes a closing plate 118, a rotating shaft 119, a rotating ring 120, a connecting column 121 and a ceramic plate 122. Through the foregoing solution, the problem in the prior art that the ceramic baffle blocks the erosion of the fluororubber sealing ring by gas, but the gas in a flowing state still erodes the fluororubber sealing ring is solved. It can be understood that the foregoing solution can also solve the problem that the handwheel 102 is easily rotated by unauthorized personnel and there is no locking of the handwheel 102 to prevent someone from randomly rotating the handwheel 102. Through the locking component, the handwheel 102 is connected to the valve body 101, so that unauthorized personnel cannot randomly rotate the handwheel 102.

[0029] For this specific embodiment, an air inlet passage 123 is provided on the side wall of the valve body 101. The valve body 101 is further provided with a sliding groove 124 and an adjusting groove 125. The adjusting groove 125 is located in the middle of the valve body 101. The sliding groove 124 is located on both sides of the adjusting groove 125. The adjusting mechanism is located in the adjusting groove 125 and the sliding groove 124. The closing component 103 is located on one side of the adjusting mechanism. The adjusting mechanism is used to adjust the closing component 103, so as to realize the closing of the adjusting groove 125 and reduce the erosion of the fluororubber sealing ring by gas.

[0030] The threaded rod 104 is fixedly connected to the handwheel 102 and is located below the handwheel 102. Among them, a rotation hole is provided between the handwheel and the valve body, and a sealed bearing is used to fixedly connect to the valve body and is located below the rotation hole. The above part is the content in the prior art. For details, please refer to the prior art. The rotating gear 105 is fixedly connected to the threaded rod 104 and is located on the outer wall of the threaded rod 104. The driven gear 106 meshes with the rotating gear 105. The driven rod 107 is fixedly connected to the driven gear 106 and is located inside the driven gear 106. Both ends of the driven rod 107 are rotatably connected to the valve body 101 through the connecting member 108. The limiting wheel 109 is fixedly connected to the driven rod 107 and is located on the outer wall of the driven rod 107. The connecting rope 110 is fixedly connected to the limiting wheel 109 and is wound around the limiting wheel 109. The driven rods 107, the driven gears 106, the limiting wheels 109, and the connecting members 108 on the left and right sides are symmetrically arranged with respect to the threaded rod 104. Among them, with the threaded rod 104 as the center, the winding methods of the connecting ropes 110 at both ends with the limiting wheel 109 are different. The connecting rope 110 is wound counterclockwise around the limiting wheel 109. Therefore, the left connecting rope 110 is located above the limiting wheel 109, and the right connecting rope 110 is located below the limiting wheel 109 (as shown in the specification drawings Figure 5 shown), the sliding assembly 111 is used to conduct and limit the connecting rope 110 to ensure the sliding process of the connecting rope 110. The connecting member 108 is used to connect the driven rod 107 and the valve body 101 to prevent the rotational movement of the driven rod 107 from being transmitted to the valve body 101. By rotating the handwheel 102, since the handwheel 102 is fixedly connected to the threaded rod 104, the threaded rod 104 is driven to rotate. At the same time, the threaded rod 104 is fixedly connected to the rotating gear 105, thereby driving the rotating gear 105 to rotate. Secondly, the driven gear 106 meshes with the rotating gear 105, thereby driving the driven gear 106 to rotate. And the driven rod 107 is fixedly connected to the driven gear 106, thereby also driving the driven rod 107 to rotate. Since the driven rod 107 is connected to the valve body 101 through the connecting member 108, when the driven rod 107 rotates, the valve body 101 does not rotate with the driven rod 107. Then, because the limiting wheel 109 is fixedly connected to the driven rod 107, the limiting wheel 109 is also driven to rotate, thereby adjusting the length of the connecting rope 110, and further adjusting the closing assembly 103 to close the adjusting groove 125, thereby reducing the erosion of the fluororubber sealing ring by the gas.

[0031] Meanwhile, the fixed shaft 112 is fixedly connected to the valve body 101 and is located in the sliding groove 124. The sealed bearing 113 is fixedly connected to the fixed shaft 112 and is located on the outer surface wall of the fixed shaft 112. The pulley 114 is fixedly connected to the sealed bearing 113 and is located on the outer surface wall of the sealed bearing 113. And the connecting rope 110 is wound around the pulley 114. When the connecting rope 110 is wound around the pulley 114, during the process of contraction and elongation of the connecting rope 110, due to the fixed connection between the fixed shaft 112 and the valve body 101, and the rotational connection between the pulley 114 and the fixed shaft 112 through the sealed bearing 113, during the process of elongation and contraction of the connecting rope 110, due to the friction between the pulley 114 and the connecting rope 110, it will drive the sealed bearing 113 on the pulley 114 to rotate, thereby making the pulley 114 rotate on the fixed shaft 112, realizing the telescopic movement of the connecting rope 110.

[0032] Secondly, the bearing 115 is fixedly connected to the valve body 101 and is sleeved on the valve body 101. And the bearing 115 is also fixedly connected to the driven rod 107. The protective shell 117 is fixedly connected to the valve body 101 and is located on one side of the bearing 115. The sealing ring 116 is located between the bearing 115 and the protective shell 117. The bearing 115 is used to connect the driven rod 107 and the valve body 101, so that when the driven rod 107 rotates, the valve body 101 will not rotate accordingly. The protective shell 117 and the sealing ring 116 are used to protect the bearing 115, prevent the bearing 115 from rusting caused by the gas, and extend the service life of the bearing 115.

[0033] The connecting column 121 is fixedly connected to the connecting rope 110 and is located at the end of the connecting rope 110 away from the limiting wheel 109. The closing plate 118 is fixedly connected to the connecting column 121 and is located at a side of the connecting column 121 away from the connecting rope 110. The rotating shaft 119 is fixedly connected to the closing plate 118 and is located at one side of the closing plate 118. The rotating ring 120 is rotatably connected to the rotating shaft 119 and is located on the outer wall of the rotating shaft 119. The rotating ring 120 is fixedly connected to the valve body 101. The ceramic plate 122 is fixedly connected to the sealing plate 118. The closing plate 118 is fixedly connected and is located on one side of the closing plate 118 close to the air inlet 123, wherein a U-shaped frame is provided on the fixed shaft 112 close to the closing plate 118 to prevent the connection rope 110 from being separated, which is not shown in the drawings of the specification. The ceramic plate 122 is used to prevent the hydrogen sulfide in the fuel gas from corroding the closing plate 118. Since the closing plate 118 is connected to the connection rope 110 through the connecting column 121, and one side of the closing plate 118 is connected to the rotating ring 120 through the rotating shaft 119, when the connecting rope 110 is rotated, During extension and contraction, the rotating shaft 119 rotates in the rotating ring 120, and the closing plate 118 rotates with the rotating shaft 119 as the center, so as to adjust the angle of the closing plate 118, so that the closing plate 118 is in a horizontal state, and the adjusting groove 125 is closed by mutual interference. Secondly, during the rotation of the threaded rod 104, the closing plate 118 is adjusted in angle, and at the same time, the fluororubber sealing ring (the technical features between the threaded rod and the fluororubber sealing ring belong to the content of the prior art, please refer to the prior art for details) is moved up and down, and the closing plate 118 is adjusted. 8 The sealing process and the up and down movement process of the fluororubber sealing ring do not cause motion interference. First, the number of teeth and the diameter of the driven gear 106 are greater than the number of teeth and the diameter of the rotating gear 105. The up and down movement speed of the fluororubber sealing ring is faster than the closing process of the closing plate 118. Therefore, when the closing is achieved, the fluororubber sealing ring is already above the closing plate 118. At the same time, the threaded rod 104 is relatively long (referring to the distance from the sealing plate to the handwheel, and there is also a certain spacing distance between the threaded rod and the closing plate), which can achieve the closing of the closing plate 118.

[0034] When using an anti-corrosion gas valve according to this embodiment, when the fluororubber sealing ring seals the air inlet passage 123, rotate the handwheel 102 clockwise. Since the threaded rod 104 is fixedly connected to the handwheel 102, the threaded rod 104 will also rotate clockwise, driving the fluororubber sealing ring to move upward. At the same time, the threaded rod 104 is fixedly connected to the rotating gear 105, driving the rotating gear 105 to rotate clockwise. The rotating gear 105 meshes with the left driven gear 106, driving the left driven gear 106 to rotate counterclockwise. Since the left driven rod 107 is fixedly connected to the left driven gear 106 and the left limiting wheel 109 is fixedly connected to the left driven rod 107, the left limiting wheel 109 is driven to rotate counterclockwise. At the same time, since the connecting rope 110 is fixedly connected to the limiting wheel 109 and is wound counterclockwise, the left connecting rope 110 is above the limiting wheel 109. Meanwhile, under the action of the gravity of the closing plate 118, the left connecting rope 110 is extended along the pulley 114. The right connecting rope 110 is extended in the same way. Then, since the closing plate 118 is fixedly connected to the rotating shaft 119 and the rotating shaft 119 is rotatably connected to the rotating ring 120, the closing plate 118 rotates around the rotating shaft 119 during the extension of the connecting rope 110, making the closing plate 118 in a horizontal state, thus closing the adjustment groove 125 and reducing the erosion of the fluororubber sealing ring by gas entering the adjustment groove 125.

[0035] Second Embodiment:

[0036] On the basis of the first embodiment, please refer to Figure 8 , Figure 8 which is a schematic structural diagram of the second embodiment provided by the present utility model.

[0037] The anti-corrosion gas valve provided by the present utility model further includes a locking assembly, and the locking assembly includes a chain 201 and a locking ring 202.

[0038] For this specific embodiment, the locking assembly is located on one side of the handwheel 102. The chain 201 is fixedly connected to the handwheel 102 and is located on one side of the handwheel 102. The locking ring 202 is fixedly connected to the valve body 101 and is located above the valve body 101. The chain 201 is used to connect to the locking ring 202 to prevent unauthorized personnel from randomly rotating the handwheel 102.

[0039] When using an anti-corrosion gas valve according to this embodiment, when it is necessary to lock the handwheel 102, the chain 201 is pulled to the locking ring 202 and wound around the locking ring 202, and the chain 201 is locked with a lock. Since the locking ring 202 is fixedly connected to the valve body 101 and the length of the chain 201 is limited, the rotation of the handwheel 102 is restricted, thereby preventing unauthorized personnel from randomly rotating the handwheel 102.

[0040] The above-disclosed is only a preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of rights of the present invention. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A corrosion-resistant gas valve, comprising a valve body and a hand wheel, wherein the side wall of the valve body is provided with an air inlet, characterized in that: It also includes an adjusting mechanism, a closing component and a locking component. The valve body is also provided with a sliding groove and an adjusting groove. The adjusting groove is located in the middle of the valve body, the sliding groove is located on both sides of the adjusting groove, the adjusting mechanism is located in the adjusting groove and the sliding groove, the closing component is located on one side of the adjusting mechanism, and the locking component is located on one side of the hand wheel. The adjusting mechanism includes a threaded rod, a rotating gear, a driven gear, a driven rod, a connecting piece, a limiting wheel, a connecting rope, and a sliding assembly. The threaded rod is fixedly connected to the handwheel and is located below the handwheel. The rotating gear is fixedly connected to the threaded rod and is located on the outer wall of the threaded rod. The driven gear is meshed with the rotating gear. The driven rod is fixedly connected to the driven gear and is located on the inner wall of the driven gear. Both ends of the driven rod are rotatably connected to the valve body through the connecting piece. The limiting wheel is fixedly connected to the driven rod and is located on the outer wall of the driven rod. The connecting rope is fixedly connected to the limiting wheel and is wound around the limiting wheel.

2. The corrosion-resistant gas valve according to claim 1, characterized in that: The sliding assembly includes a fixed shaft, a sealed bearing and a pulley. The fixed shaft is fixedly connected to the valve body and is located in the sliding groove. The sealed bearing is fixedly connected to the fixed shaft and is located on the outer wall of the fixed shaft. The pulley is fixedly connected to the sealed bearing and is located on the outer wall of the sealed bearing, and the connecting rope is wound around the pulley.

3. The corrosion-resistant gas valve according to claim 2, characterized in that: The connecting member includes a bearing, a sealing ring and a protective shell. The bearing is fixedly connected to the valve body and sleeved on the valve body, and the bearing is also fixedly connected to the driven rod. The protective shell is fixedly connected to the valve body and is located on one side of the bearing. The sealing ring is located between the bearing and the protective shell.

4. The corrosion-resistant gas valve according to claim 3, characterized in that: The closing assembly includes a closing plate, a rotating shaft, a rotating ring and a connecting column. The connecting column is fixedly connected to the connecting rope and is located at the end of the connecting rope away from the limiting wheel. The closing plate is fixedly connected to the connecting column and is located on a side of the connecting column away from the connecting rope. The rotating shaft is fixedly connected to the closing plate and is located on one side of the closing plate. The rotating ring is rotatably connected to the rotating shaft and is located on the outer wall of the rotating shaft, and the rotating ring is fixedly connected to the valve body.

5. The corrosion-resistant gas valve according to claim 4, characterized in that: The sealing component also includes a ceramic plate, which is fixedly connected to the sealing plate and is located on a side of the sealing plate close to the air inlet.

6. The corrosion-resistant gas valve according to claim 5, characterized in that: The locking assembly comprises a chain and a locking ring, wherein the chain is fixedly connected to the hand wheel and is located on one side of the hand wheel, and the locking ring is fixedly connected to the valve body and is located above the valve body.

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