Scouring-free regulating valve structure

Abstract

The utility model relates to the technical field of regulating valves, in particular to a washing-free regulating valve structure which comprises a valve body, a valve port is formed in the upper portion of the valve body, a valve deck is rotationally connected to the valve port through threads, the valve deck is fixedly connected with a hand wheel through a valve rod, and a hydraulic regulating cylinder is connected to the lower portion of the valve deck through a connecting piece. The hydraulic adjusting cylinder is connected with the valve body through a double-layer buffering gasket, a valve element is fixedly connected to the lower portion of the hydraulic adjusting cylinder, a valve clack set is detachably connected to the outer side of the valve element in a sliding mode, and the valve clack set is fixedly connected to the valve body. Left and right ends of the valve body are connected with pipelines through flange plates. The valve clack group is arranged, so that a buffer space is provided when a medium passes through the valve, and a sealing surface for connecting the valve core and the valve clack group is protected; and moreover, the structure design is reasonable, and the maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a flushing-free regulating valve structure. Background Art

[0002] A regulating valve is a valve used to adjust process parameters such as medium flow, pressure, temperature, and liquid level in the field of industrial automation process control. It automatically adjusts the valve opening according to the control signal in the automation system, thereby achieving the regulation of medium flow, pressure, temperature, and liquid level. In the past, the regulating valve used to adjust liquids often had the medium directly eroding the sealing surface of the valve core and the valve disc. The sealing surface was easily damaged by the medium, resulting in a decrease in the sealing performance of the valve. Utility Model Content

[0003] The purpose of the present application is to provide a flush-free regulating valve structure, aiming to solve the above-mentioned problems in the prior art.

[0004] The present application provides a flushing-free regulating valve structure, including a valve body, a valve port is opened on the top of the valve body, a valve cover is rotatably connected to the valve port by a thread, the valve cover is fixedly connected to a handwheel by a valve stem, a hydraulic regulating cylinder is connected to the bottom of the valve cover by a connecting piece, the hydraulic regulating cylinder is connected to the valve body by a double-layer buffer gasket, a valve core is fixedly connected to the bottom of the hydraulic regulating cylinder, a valve flap group is detachably and slidably connected to the outer side of the valve core, and the valve flap group is fixedly connected to the valve body; the left and right ends of the valve body are connected to the pipeline by flanges.

[0005] Furthermore, a step is provided below the valve opening of the valve body, and the double-layer buffer gasket is fitted and connected to the step.

[0006] Furthermore, the hydraulic adjustment cylinder comprises a cylinder body, one end of the cylinder body is fixedly connected to a connecting piece, the other end of the cylinder body is slidably connected to a piston rod, and one end of the piston rod away from the cylinder body is fixedly connected to a valve core.

[0007] Furthermore, the cylinder body is fittedly connected to the double-layer buffer gasket.

[0008] Furthermore, a sealing gasket is fixedly connected below the valve core.

[0009] Furthermore, the valve flap group includes an upper valve flap and a lower valve flap, the upper valve flap and the lower valve flap are fixedly connected, a columnar space is formed at the connection, and the diameter size of the valve core matches the columnar space.

[0010] Furthermore, flanges are fixedly connected at both ends of the valve body, a flange matching the flange on the valve body is fixedly connected to the pipeline, a double-layer sealing ring is connected between the flange on the valve body and the flange on the pipeline, and they are connected by bolts.

[0011] The beneficial effects of the utility model are as follows: the utility model provides a valve flap group so that the medium has a buffer space when passing through the valve, so that the sealing surface connecting the valve core and the valve flap group is protected; and the structure design of the utility model is reasonable, which is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic cross-sectional view of the main structure of the utility model.

[0013] Figure 2 It is a top view of the valve disc assembly.

[0014] In the figure:

[0015] 1-valve body; 2-valve cover; 3-valve stem; 4-handwheel; 5-double-layer buffer gasket; 6-valve core; 7-flange; 8-step; 9-cylinder body; 10-connector; 11-piston rod; 12-sealing gasket; 13-column space; 14-double-layer sealing ring; 15-bolt; 16-upper valve disc; 17-lower valve disc; 18-pipeline; 19-buffer belt. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] like Figure 1 and Figure 2 The structure of a flush-free regulating valve shown in the figure comprises a valve body 1, a valve port is formed on the top of the valve body 1, a valve cover 2 is connected to the valve port by a threaded rotation, the valve cover 2 is fixedly connected to a hand wheel 4 by a valve stem 3, the valve cover 2 is rotated by the hand wheel 4, and the valve cover 2 is used to seal the valve port. A hydraulic regulating cylinder is connected to the bottom of the valve cover 2 by a connecting member 10, the hydraulic regulating cylinder is connected to the valve body 1 by a double-layer buffer gasket 5, a valve core 6 is fixedly connected to the bottom of the hydraulic regulating cylinder, a valve flap group is detachably and slidably connected to the outside of the valve core 6, and the valve flap group is fixedly connected to the valve body 1; the left and right ends of the valve body 1 are connected to the pipeline 18 by a flange 7.

[0018] A step 8 is provided below the valve opening of the valve body 1 , and the double-layer buffer gasket is fitted and connected to the step 8 . The step 8 is used to support the connector 10 and the double-layer buffer gasket.

[0019] The hydraulic adjustment cylinder includes a cylinder body 9 , one end of which is fixedly connected to a connecting piece 10 , and the other end of the cylinder body 9 is slidably connected to a piston rod 11 , and the end of the piston rod 11 away from the cylinder body 9 is fixedly connected to the valve core 6 .

[0020] The cylinder body 9 is closely connected with the double-layer buffer gasket 5, and the double-layer buffer gasket 5 prevents the cylinder body 9 from shaking, and plays a shock-absorbing role. The double-layer buffer gasket 5 is a consumable and needs to be replaced regularly.

[0021] A sealing gasket 12 is fixedly connected below the valve core 6 .

[0022] The valve flap assembly includes an upper valve flap 16 and a lower valve flap 17 . The upper valve flap 16 and the lower valve flap 17 are fixedly connected to form a columnar space 13 at the connection. The diameter of the valve core 6 matches the columnar space 13 .

[0023] The valve body 1 is fixedly connected with flanges 7 at both ends, the pipeline 18 is fixedly connected with a flange 7 matching the flange 7 on the valve body 1, a double-layer sealing ring 14 is connected between the flange 7 on the valve body 1 and the flange 7 on the pipeline 18, and they are connected by bolts 15.

[0024] The medium flows along the medium flow direction. When the valve core 6 and the valve disc group are completely closed, the medium stops flowing at the buffer zone 19. The position of the valve core is adjusted by the hydraulic adjustment cylinder to move the valve core 6 out of the valve disc group. The flow rate of the medium is controlled by adjusting the distance of the valve disc group. The medium flows in the valve body and will not directly erode the sealing surface of the valve core 6 and the valve disc group, so that the sealing surface connecting the valve core 6 and the valve disc group is protected.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A flush-free regulating valve structure, characterized in that: It includes a valve body, a valve port is opened on the top of the valve body, a valve cover is rotatably connected to the valve port by a thread, the valve cover is fixedly connected to a handwheel through a valve stem, a hydraulic adjustment cylinder is connected to the bottom of the valve cover through a connecting piece, the hydraulic adjustment cylinder is connected to the valve body through a double-layer buffer gasket, a valve core is fixedly connected to the bottom of the hydraulic adjustment cylinder, a valve flap group is detachably and slidably connected to the outside of the valve core, and the valve flap group is fixedly connected to the valve body; the left and right ends of the valve body are connected to the pipeline through flanges.

2. A flush-free regulating valve structure according to claim 1, characterized in that: A step is provided below the valve opening of the valve body, and the double-layer buffer gasket is fitted and connected to the step.

3. The flush-free regulating valve structure according to claim 1, characterized in that: The hydraulic adjustment cylinder comprises a cylinder body, one end of which is fixedly connected to a connecting piece, the other end of which is slidably connected to a piston rod, and one end of the piston rod away from the cylinder body is fixedly connected to a valve core.

4. A flush-free regulating valve structure according to claim 3, characterized in that: The cylinder body is fitted and connected to the double-layer buffer gasket.

5. The flush-free regulating valve structure according to claim 1, characterized in that: A sealing gasket is fixedly connected below the valve core.

6. The flush-free regulating valve structure according to claim 1, characterized in that: The valve flap group comprises an upper valve flap and a lower valve flap, the upper valve flap and the lower valve flap are fixedly connected to form a columnar space at the connection, and the diameter size of the valve core matches the columnar space.

7. The flush-free regulating valve structure according to claim 1, characterized in that: Flanges are fixedly connected at both ends of the valve body, a flange matching the flange on the valve body is fixedly connected to the pipeline, a double-layer sealing ring is connected between the flange on the valve body and the flange on the pipeline, and they are connected by bolts.

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