Reducing valve capable of flowing in two directions and having different flows in all directions

Abstract

The utility model relates to the field of variable-diameter valve bodies, and discloses a variable-diameter valve capable of flowing in two directions and having different flows in all directions, which comprises a valve body, a variable-diameter valve core and a sliding pipe, a first through hole is formed in the center of the valve body, the sliding pipe is coaxial with the valve body and is embedded in the center of the valve body, the inner diameter of the sliding pipe is larger than that of the first through hole, and the variable-diameter valve core comprises a flow limiting pipe and a flow expanding part. The flow limiting pipe is fixed to the side, close to the first through hole, of the flow expanding part, the flow expanding part can slide in the sliding pipe, the outer diameter of the flow limiting pipe is smaller than the diameter of the first through hole, and a plurality of flow channels are formed in the section of the flow expanding part. According to the variable-diameter valve, the flow can be conveniently changed according to different flow directions.

Description

Technical Field

[0001] The utility model relates to the field of variable diameter valve bodies, in particular to a variable diameter valve capable of bidirectional flow with different flow rates in each direction. Background Art

[0002] In industrial piping systems, a valve body is often required to be arranged in the pipeline to change the cross-sectional flow rate according to the fluid flow direction. Existing variable-diameter valves are usually one-way flow or use external force to change the cross-sectional flow rate. For example, the application document with patent application number 2020112317893 adjusts the flow rate of the valve body cross section through an aperture. However, this method requires external force for adjustment, which is more troublesome to operate. On the other hand, installing the above-mentioned device in the pipeline will affect the sealing of the pipeline, which requires frequent inspection and maintenance. Therefore, it is necessary to provide a variable-diameter valve that can conveniently change the flow rate according to different flow directions. Utility Model Content

[0003] The utility model aims to provide a variable diameter valve capable of bidirectional flow with different flow rates in each direction, so as to provide a variable diameter valve which can conveniently change the flow rate according to different flow directions.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a variable valve capable of bidirectional flow with different flow rates in each direction, comprising a valve body, a variable valve core and a sliding tube, a first through hole being opened in the center of the valve body, the sliding tube being coaxial with the valve body and embedded and installed in the center of the valve body, the inner diameter of the sliding tube being larger than the first through hole, the variable valve core comprising a flow limiting tube and a flow expansion part, the flow limiting tube being fixed on a side of the flow expansion part close to the first through hole, the flow expansion part being able to slide in the sliding tube, the outer diameter of the flow limiting tube being smaller than the diameter of the first through hole, and a plurality of flow channels being arranged on the cross section of the flow expansion part.

[0005] The beneficial effects of this solution are as follows: through the above-mentioned arrangement, when the flow direction of the fluid is from the sliding tube to the first through hole, the variable valve core is driven by the fluid to flow in the direction of the first through hole. When the variable valve core slides to the end of the sliding tube, the outer diameter of the flow limiting tube is smaller than the diameter of the first through hole, and the flow limiting tube can be inserted into the first through hole. At this time, the fluid cannot enter the first through hole from the flow channel, but can only enter the first through hole from the flow limiting tube. The cross-sectional area through which the fluid in the variable valve can pass is reduced, thereby changing the flow rate. When the flow direction of the fluid is from the first through hole to one side of the sliding tube, the variable valve core is driven by the fluid to flow in the direction away from the first through hole. When the variable valve core moves to a certain extent, the fluid can not only flow out of the flow limiting tube, but also circulate through the flow channel set on the expansion part, thereby increasing the flow rate per unit time.

[0006] 1. Through the above settings, the flow rate can be changed by the flow direction of the fluid, and it can be applied to pipeline systems such as gas stations that have the need to store and release fluids. The flow rate can be adjusted according to actual usage, as well as the stability of the flow rate.

[0007] 2. This technical solution can be built into the pipeline system, has little impact on the sealing of the pipeline system, does not require manual adjustment of the flow rate, has a simple structure, and is easy to use.

[0008] Preferably, as an improvement, an edge of one end of the flow limiting tube close to the first through hole is chamfered.

[0009] The beneficial effect is that when the fluid slides from the first through hole to one side of the sliding tube, the chamfer on the flow limiting tube can guide the flow direction of the fluid, so that the fluid is dispersed around the flow limiting tube and passes through the flow channel.

[0010] Preferably, as an improvement, the cross section of the flow expansion portion is annular, the flow limiting tube is fixed inside the flow expansion portion, and four flow channels are circumferentially separated on the cross section of the flow expansion portion.

[0011] The beneficial effect is: through the above-mentioned configuration, setting up multiple flow channels can quickly increase the flow rate of the cross section, and at the same time the flow channels are evenly distributed on the cross section of the flow limiting part, which can ensure the uniformity of fluid flow, disperse the pressure of fluid impact, and extend the service life of the device.

[0012] Preferably, as an improvement, it further comprises a valve cover, which can cover the valve body, and an annular groove is formed on the surface of the valve body close to the valve cover, and a sealing ring is embedded in the annular groove.

[0013] The beneficial effect is that the sealing performance of the variable diameter valve is improved by arranging the sealing ring.

[0014] Preferably, as an improvement, a limiting ring is provided on a side of the sliding tube away from the first channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the variable diameter valve of the utility model embodiment;

[0016] Figure 2 This is a cross-sectional view of a variable diameter valve core according to an embodiment of the utility model;

[0017] Figure 3 It is a top view of the variable diameter valve core according to an embodiment of the utility model. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods:

[0019] The reference numerals in the drawings of the specification include: valve body 1, limit ring 2, sliding tube 3, first through hole 4, flow limiting tube 5, flow expansion part 6, flow channel 7, chamfer 8, valve cover 9, sealing ring 10.

[0020] Example

[0021] This embodiment is basically Figure 1-Figure 3 As shown, Figure 1 and Figure 2 The variable-diameter valve capable of bidirectional flow with different flow rates in each direction shown in the figure comprises a valve body 1, a variable-diameter valve core and a sliding tube 3. A first through hole 4 is opened in the center of the valve body 1. The sliding tube 3 is coaxial with the valve body 1 and embedded in the center of the valve body 1. The inner diameter of the sliding tube 3 is larger than the first through hole 4. The variable-diameter valve core comprises a flow limiting tube 5 and a flow expansion portion 6. The flow limiting tube 5 is fixed on a side of the flow expansion portion 6 close to the first through hole 4. The flow expansion portion 6 can slide in the sliding tube 3. The outer diameter of the flow limiting tube 5 is smaller than the diameter of the first through hole 4. Figure 3 As shown, the cross section of the expansion part 6 is annular, the flow limiting tube 5 is fixed inside the expansion part 6, and there are four flow channels 7 evenly divided on the cross section of the expansion part 6. The provision of multiple flow channels 7 can quickly increase the flow rate of the cross section, and at the same time, the flow channels 7 are evenly distributed on the cross section of the flow limiting part, which can ensure the uniformity of fluid flow, disperse the pressure of fluid impact, and extend the service life of the device. It also includes a valve cover 9, which can be covered on the valve body 1. The surface of the valve body 1 close to the valve cover 9 is provided with an annular groove, and a sealing ring 10 is embedded in the annular groove to ensure the sealing of the variable diameter valve body 1 and prevent fluid leakage from the valve body 1. A limiting ring 2 is provided on the side of the sliding tube 3 away from the first channel.

[0022] like Figure 1 In the embodiment shown in the figure, the right edge of the flow limiting tube 5 near the first through hole 4 is provided with a chamfer 8. Figure 1 When the fluid flows from the right side to the left side, the chamfer 8 on the flow limiting tube 5 can guide the flow direction of the fluid, so that the fluid is dispersed around the flow limiting tube 5 and passes through the four flow channels 7.

[0023] The specific implementation process is as follows:

[0024] When the flow direction of the fluid is from the sliding tube 3 to the first through hole 4, that is, from left to right, the variable valve core is driven by the fluid to flow in the direction of the first through hole 4. When the variable valve core slides to the end of the sliding tube 3, the outer diameter of the flow limiting tube 5 is smaller than the diameter of the first through hole 4, and the flow limiting tube 5 can be inserted into the first through hole 4. At this time, the fluid cannot enter the first through hole 4 from the flow channel 7, and can only enter the first through hole 4 from the flow limiting tube 5. The cross-sectional area through which the fluid can pass in the variable valve is reduced, thereby changing the flow rate; when the flow direction of the fluid is from the first through hole 4 to one side of the sliding tube 3, the variable valve core is driven by the fluid to flow in the direction away from the first through hole 4. When the variable valve core moves to a certain extent, the fluid can not only flow out from the flow limiting tube 5, but also flow through the flow channel 7 set on the expansion part 6, and the flow rate per unit time increases.

[0025] Through the above arrangement, the flow rate can be changed by the flow direction of the fluid, and it can be applied to pipeline systems such as gas stations that have the need to store and release fluids. The flow rate can be adjusted according to actual usage conditions, as well as the stability of the flow rate. This technical solution can be built into the pipeline system, has little impact on the sealing of the pipeline system, does not require manual adjustment of the flow rate, has a simple structure, and is easy to use.

[0026] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A variable diameter valve capable of bidirectional flow with different flow rates in each direction, characterized by: It includes a valve body, a variable-diameter valve core and a sliding tube. A first through hole is opened in the center of the valve body. The sliding tube is coaxial with the valve body and embedded in the center of the valve body. The inner diameter of the sliding tube is larger than the first through hole. The variable-diameter valve core includes a flow limiting tube and a flow expansion part. The flow limiting tube is fixed on a side of the flow expansion part close to the first through hole. The flow expansion part can slide in the sliding tube. The outer diameter of the flow limiting tube is smaller than the diameter of the first through hole. A plurality of flow channels are arranged on the cross section of the flow expansion part.

2. The variable diameter valve capable of bidirectional flow with different flow rates in each direction according to claim 1, characterized in that: An edge of one end of the flow limiting tube close to the first through hole is provided with a chamfer.

3. The variable diameter valve capable of bidirectional flow with different flow rates in each direction according to claim 2, characterized in that: The cross section of the flow expansion part is annular, the flow limiting tube is fixed inside the flow expansion part, and four flow channels are divided circumferentially on the cross section of the flow expansion part.

4. The variable diameter valve capable of bidirectional flow with different flow rates in each direction according to claim 3, characterized in that: The valve body also includes a valve cover, which can cover the valve body. The surface of the valve body close to the valve cover is provided with an annular groove, and a sealing ring is embedded in the annular groove.

5. The variable diameter valve capable of bidirectional flow with different flow rates in each direction according to claim 4, characterized in that: A limiting ring is provided on one side of the sliding tube away from the first channel.

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