Large-diameter wheel welding ball valve

Abstract

The utility model discloses a large-caliber wheel welding ball valve, which relates to the technical field of ball valves, and comprises a valve body, butt joint pipes are fixed at two ends of the valve body, an extension component is sleeved at the end part of each group of butt joint pipes, and an operation cylinder for locking the extension component is sleeved on the outer wall of each butt joint pipe. The end face, away from the valve body, of the extension assembly is connected with an external pipe assembly. The extension assembly comprises an extension pipe movably connected to the outer wall of the butt joint pipe in a sleeving mode, and two sets of stroke grooves are symmetrically formed in the outer wall of the extension pipe. The overall length of the valve body can be changed through the extension assembly, the defect that butt joint cannot be achieved due to the fact that the distance between a pipeline and the valve body is large is overcome, the high ball valve is more flexible to use and install, meanwhile, under cooperation of the external pipe assembly, the butt joint step between the valve body and the pipeline is simple and rapid, the working efficiency during manual disassembly and assembly can be improved, and the labor intensity of workers is lowered. And the practicability of the ball valve is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a large-diameter wheel-welded ball valve. Background Art

[0002] Welded ball valves are widely used in various fields. Their superior quality and high performance stability are beyond the reach of ordinary cast steel ball valves. The service life of fully welded ball valves is much longer than that of cast steel ball valves. Fully welded ball valves are widely used in various pipeline equipment such as city gas, city heating, petrochemical industry, shipbuilding, steel, pressure regulating stations, power plants, etc.

[0003] At present, flanges are installed at the channels at both ends of the valve to connect with the pipeline. If the pipeline and the valve are in a state where there is no contact, there will be errors in the so-called pipeline interception, and the pipeline needs to be replaced manually or welded to extend the pipeline, which makes the installation efficiency of the valve low. The installation of the flange generally requires the use of six to eight bolts and nuts for connection. This installation method is cumbersome, and when the flange is disassembled, multiple nuts need to be screwed, which has low installation and disassembly efficiency. Therefore, a large-diameter wheel-welded ball valve is proposed. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide a large-diameter wheel-welded ball valve to solve the technical problems raised in the above background.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a large-diameter wheel-welded ball valve, comprising a valve body, with butt-jointing tubes fixed at both ends of the valve body, an extension assembly sleeved on the end of each set of butt-jointing tubes, an operating cylinder for locking the extension assembly sleeved on the outer wall of the butt-jointing tube, and an external tube assembly connected to the end face of the extension assembly away from the valve body;

[0006] The extension assembly includes an extension tube that is movably sleeved on the outer wall of the docking tube. The outer wall of the extension tube is symmetrically provided with two groups of travel grooves, and the side walls of each group of travel grooves are equidistantly provided with multiple groups of positioning grooves. A docking end is fixed at one end of the extension tube away from the valve body, and a clip that is engaged with the positioning groove is fixed on the inner wall of the operating cylinder.

[0007] As an optimal technical solution for a large-diameter wheel-welded ball valve of the present invention, the operating cylinder is rotatably arranged on the outer wall of the butt joint pipe by a torsion spring, and the inner wall of the operating cylinder fits with the inner chamfered outer wall.

[0008] As an optimal technical solution for a large-diameter wheel-welded ball valve of the utility model, the external pipe assembly includes an end ring docked with the docking end, a pipeline is fixed to one end of the end ring, and a conical ring is fixed to the other end of the end ring that fits the inner wall of the docking end, and an inner chamfer is provided at the contact position between the inner wall of the docking end and the conical ring.

[0009] As an optimal technical solution for a large-diameter wheel-welded ball valve of the utility model, the butt end and the outer wall of the end ring are sleeved with a clamp, one end of the clamp is in a rotational connection, and the other end is locked with a bolt.

[0010] As an optimal technical solution for a large-diameter wheel-welded ball valve of the present invention, a guide cone ring is fixed to the end face of the butt-jointed pipe, and the outer wall of the guide cone ring is in a fit state with the inner chamfer.

[0011] As an optimal technical solution for a large-diameter wheel-welded ball valve of the present invention, the inner wall of the extension tube is provided with multiple groups of triangular blocks extending to the curved outer wall of the butt tube, and the curved outer wall of the butt tube is provided with triangular grooves that match the triangular blocks.

[0012] In summary, the present invention has the following beneficial effects:

[0013] The utility model can change the overall length of the valve body through the extension component, making up for the defect that the pipeline and the valve body are too far apart and cannot be connected, making the use and installation of the high ball valve more flexible. At the same time, with the cooperation of the external pipe component, the connection step between the valve body and the pipeline is simple and quick, which can improve the work efficiency during manual disassembly and assembly, and further enhance the practicality of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 It is a three-dimensional cutaway view of the utility model;

[0016] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a structural diagram of a partial extension assembly and an external pipe assembly of the utility model;

[0018] Figure 5 This is a cross-sectional view of the end faces of the operating cylinder and the butt joint tube of the present invention;

[0019] Figure 6 This is an end view of the operating cylinder of the present utility model;

[0020] Figure 7 This is a cross-sectional view of the end face of the extension tube of the present invention.

[0021] In the figure: 100, valve body; 101, butt pipe; 102, triangular groove;

[0022] 110. Operating cylinder; 111. Clamping strip; 120. External pipe assembly; 121. End ring; 122. Cone ring; 123. Pipe; 130. Clamping hoop; 140. Extension assembly; 141. Inner chamfer; 142. Positioning groove; 143. Travel groove; 144. Butt joint; 145. Triangle block; 146. Extension pipe; 150. Guide cone ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] The following describes an embodiment of the present invention based on its overall structure.

[0025] A large diameter wheel welded ball valve, such as Figures 1 to 7 As shown, it includes a valve body 100, with butt joints 101 fixed at both ends of the valve body 100, an extension assembly 140 sleeved on the end of each butt joint 101, an operating cylinder 110 for locking the extension assembly 140 sleeved on the outer wall of the butt joint 101, and an external pipe assembly 120 connected to the end surface of the extension assembly 140 away from the valve body 100;

[0026] The extension assembly 140 includes an extension tube 146 that is movably sleeved on the outer wall of the docking tube 101. The outer wall of the extension tube 146 is symmetrically defined with two sets of travel grooves 143. The sidewall of each set of travel grooves 143 is equidistantly defined with multiple sets of positioning grooves 142. A docking end 144 is fixed to the end of the extension tube 146 away from the valve body 100. A clip 111 is fixed to the inner wall of the operating cylinder 110 and engages with the positioning grooves 142.

[0027] The external pipe assembly 120 includes an end ring 121 that docks with the docking end 144. A pipe 123 is fixed to one end of the end ring 121, and a tapered ring 122 that fits against the inner wall of the docking end 144 is fixed to the other end of the end ring 121. An inner chamfer 141 is formed at the contact position between the inner wall of the docking end 144 and the tapered ring 122.

[0028] The butt end 144 and the outer wall of the end ring 121 are sleeved with a clamping hoop 130 , one end of the clamping hoop 130 is in a rotational connection, and the other end is locked with a bolt.

[0029] During docking, the end ring 121 is fitted with the docking end 144, and the tapered ring 122 is inserted into the docking end 144 to fit with the inner chamfer 141. Then, a set of clamps 130 are sleeved on the curved outer walls of the end ring 121 and the docking end 144, thereby completing the docking of the pipe and the valve body 100. This reduces the number of bolts to be tightened and achieves a better sealing effect.

[0030] When the gap between the valve body 100 and the connected pipe is large, an external rotational force can be applied to the operating cylinder 110 to make it rotate along the axis of the connecting pipe 101. At this time, the clamping strip 111 rotates from the positioning groove 142 to the travel groove 143. At this time, an external force can be applied to the extension tube 146 away from the valve body 100 to make the extension tube 146 move along the outer wall of the connecting pipe 101 until it can fit with the pipe for docking. Then, the external force applied to the operating cylinder 110 is removed, and the clamping strip 111 will re-enter the corresponding positioning groove 142, thereby locking the adjusted extension tube 146, so that the valve body 100 can be docked.

[0031] Please refer to Figure 2 and Figure 3 The operating cylinder 110 is rotatably arranged on the outer wall of the butt joint 101 by a torsion spring, and the inner wall of the operating cylinder 110 is matched with the outer wall of the inner chamfer 141 .

[0032] The torsion spring is used to generate a reverse torque on the rotating operating cylinder 110 so that the operating cylinder 110 can automatically reverse and recover, and at the same time prevent the liquid entering the valve body 100 from leaking through the gap between the two.

[0033] Please refer to Figure 2 and Figure 3 A guide cone ring 150 is fixed to the end face of the butt-jointed pipe 101 , and the outer wall of the guide cone ring 150 is in a fit state with the inner chamfer 141 .

[0034] The resistance to the liquid entering the valve body 100 is reduced, and the hole can be used to guide the liquid into the valve body 100, so as to better avoid leakage.

[0035] Please refer to Figure 5 and Figure 7 The inner wall of the extension tube 146 is provided with a plurality of triangular blocks 145 extending to the curved outer wall of the butt tube 101 , and the curved outer wall of the butt tube 101 is provided with triangular grooves 102 that match the triangular blocks 145 .

[0036] When the extension tube 146 drives the triangular block 145 to move in the triangular groove 102, the extension tube 146 can be prevented from rotating on the outer wall of the docking tube 101, ensuring that it can move linearly along a preset trajectory and cooperate with the operating cylinder 110 to achieve the purpose of locking.

[0037] During use, when docking, the end ring 121 is fitted with the docking end 144, and the tapered ring 122 is inserted into the docking end 144 to fit with the inner chamfer 141. Then, a set of clamps 130 are sleeved on the curved outer walls of the end ring 121 and the docking end 144, so that the pipe and the valve body 100 are docked, the number of bolts to be tightened is reduced, and a better sealing effect is achieved;

[0038] When the gap between the valve body 100 and the docked pipe is large, an external rotational force can be applied to the operating cylinder 110 to make it rotate along the axis of the docking pipe 101. At this time, the clamping strip 111 rotates from the positioning groove 142 to the travel groove 143. At this time, an external force can be applied to the extension tube 146 toward the side away from the valve body 100 to make the extension tube 146 move along the outer wall of the docking pipe 101 until it can fit with the pipe for docking. Then, the external force applied to the operating cylinder 110 is removed, and the clamping strip 111 will re-enter the corresponding positioning groove 142, thereby locking the adjusted extension tube 146, so that the valve body 100 can be docked. The parts not involved in this device are the same as the existing technology or can be implemented using existing technology.

[0039] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A large-caliber wheel-welded ball valve, comprising a valve body (100), characterized in that: The valve body (100) is fixed with butt joint tubes (101) at both ends, and an extension assembly (140) is sleeved on the end of each set of butt joint tubes (101). An operating cylinder (110) for locking the extension assembly (140) is sleeved on the outer wall of the butt joint tube (101), and an end surface of the extension assembly (140) away from the valve body (100) is connected to an external pipe assembly (120); The extension assembly (140) includes an extension tube (146) movably sleeved on the outer wall of the docking tube (101), the outer wall of the extension tube (146) is symmetrically provided with two groups of travel grooves (143), and the side wall of each group of the travel grooves (143) is equidistantly provided with multiple groups of positioning grooves (142), the end of the extension tube (146) away from the valve body (100) is fixed with a docking end (144), and the inner wall of the operating cylinder (110) is fixed with a clamping strip (111) that is clamped with the positioning groove (142).

2. A large-diameter wheel-welded ball valve according to claim 1, characterized in that: The operating cylinder (110) is rotatably arranged on the outer wall of the butting tube (101) by using a torsion spring, and the inner wall of the operating cylinder (110) is fitted with the outer wall of the inner chamfer (141).

3. The large-diameter wheel-welded ball valve according to claim 1, characterized in that: The external pipe assembly (120) includes an end ring (121) docked with the docking end (144), a pipe (123) is fixed to one end of the end ring (121), and a cone ring (122) is fixed to the other end of the end ring (121) and is fitted with the inner wall of the docking end (144), and an inner chamfer (141) is provided at the contact position between the inner wall of the docking end (144) and the cone ring (122).

4. A large-diameter wheel-welded ball valve according to claim 1, characterized in that: The butt end (144) and the outer wall of the end ring (121) are sleeved with a hoop (130), and one end of the hoop (130) is in a rotational connection, so that the other end is locked with a bolt.

5. The large-diameter wheel-welded ball valve according to claim 1, characterized in that: A guide cone ring (150) is fixed to the end surface of the butt-jointed pipe (101), and the outer wall of the guide cone ring (150) and the inner chamfer (141) are in a fitted state.

6. The large-diameter wheel-welded ball valve according to claim 1, characterized in that: The inner wall of the extension tube (146) is provided with a plurality of triangular blocks (145) extending to the curved outer wall of the butt-joint tube (101), and the curved outer wall of the butt-joint tube (101) is provided with triangular grooves (102) that match the triangular blocks (145).

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