One-way throttle valve
By designing a threaded connection limit block and control rod structure, the problems of inconvenient cleaning and parts replacement of existing one-way valves are solved, achieving unidirectional flow and improved maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-03-31
AI Technical Summary
The fixed internal structure of existing check valves makes cleaning and parts replacement inconvenient, resulting in resource waste.
Design a one-way throttle valve that uses a limit block threadedly connected to the valve body. Cleaning and replacement can be achieved by rotating the limit block. Combined with the structure of a compression spring and a control rod, it ensures unidirectional fluid flow.
While achieving unidirectional flow, it also facilitates the cleaning and replacement of limit blocks, reduces resource waste, and improves maintenance efficiency.
Smart Images
Figure CN224064897U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste sorting and recycling technology, and in particular to a one-way throttle valve. Background Technology
[0002] A check valve is a valve that allows fluid to flow only through the inlet, but prevents the medium from flowing back through the outlet. It is also known as a non-return valve or check valve, and is used in hydraulic systems to prevent oil from flowing in the opposite direction, or in pneumatic systems to prevent compressed air from flowing in the opposite direction. Check valves come in two types: straight-through and right-angle.
[0003] However, in actual use, the internal structure of most existing check valves is already fixedly connected to the valve pipe, making it inconvenient to clean the inside of the check valve and replace some parts. As a result, if one of the internal parts of the check valve is damaged, the entire check valve will be discarded, leading to a waste of resources. Summary of the Invention
[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a one-way throttle valve that can reduce the clogging of the filter structure and reduce the tedious process of manually disassembling the filter structure for replacement and cleaning.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] According to an embodiment of this disclosure, a one-way throttle valve is provided, including a valve body having an inner cavity that extends through the front end and rear end of the valve body; an annular valve shell is installed at the center of the inner cavity of the valve body, and a valve core is installed inside the valve shell; the valve core includes a blocking post, which is clearance-fitted with the annular hole of the valve shell; a limiting block is connected to the rear end of the blocking post by a compression spring, the limiting block extending radially along the blocking post and connected to the inner wall of the valve body.
[0007] In a preferred embodiment, the inner wall of the valve body is provided with internal threads, and the two ends of the limiting block are provided with external threads; the limiting block and the inner wall of the valve body are connected together by the mating of the internal and external threads.
[0008] As a preferred embodiment, a blind hole extending in the front-rear direction is provided on the rear side of the limiting block, and a control rod is movably inserted into the blind hole;
[0009] Among them, a dovetail groove is provided on the inner wall of the blind hole, and the dovetail groove extends through the outlet of the blind hole;
[0010] The control rod has a trapezoidal guide rail on its outer wall, and the trapezoidal guide rail is movably inserted into a dovetail groove.
[0011] In a preferred embodiment, the rear end of the blocking column is provided with a slot; the front end of the limiting block is provided with a connecting rod extending axially along the blocking column, the connecting rod being movably inserted into the slot, and a compression spring being sleeved on the connecting rod.
[0012] In a preferred embodiment, the rear end of the blocking column extends to the rear of the valve housing and expands to form a disc structure, the cross-sectional area of which is larger than the cross-sectional area of the annular hole of the valve housing; wherein, the compression spring is disposed between the disc structure and the limiting block.
[0013] As a preferred embodiment, a sealing ring is fitted on the limiting block between the disc structure and the valve housing.
[0014] In summary, compared with the prior art, this utility model has the following beneficial effects:
[0015] 1. In this utility model, when liquid enters the valve body from the front end, the liquid impacts the blocking column of the valve core and pushes the blocking column to move backward through the annular hole and exert force on the compression spring. At this time, the liquid can pass through the housing and flow out from the rear end. Since the limiting block remains stationary, the compression spring is in a compressed state at this time. When liquid enters the valve body from the rear end, the liquid impacts the disc structure of the valve core, but the disc structure cannot pass through the annular hole, so the liquid cannot enter the front end through the valve core.
[0016] 2. In this utility model, the limiting block and the valve body are connected by a thread, and the limiting block can be removed by rotating it for separate cleaning or replacement.
[0017] 3. In this utility model, the limit block can be rotated by rotating the control rod, which makes it convenient to install the limit block in the valve body or remove it from the valve body; in addition, when the valve body is working normally, the control rod can be pulled out from the blind hole. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the cooperation between the limiting block and the control rod in an embodiment of this utility model;
[0019] Figure 2 This is a cross-sectional schematic diagram of a one-way throttle valve in an embodiment of the present invention;
[0020] The numbers and letters in the diagram represent the names of the corresponding components:
[0021] 10. Valve body; 101. Internal thread; 11. Front end of valve body; 12. Rear end of valve body; 13. Valve shell;
[0022] 14. Valve core; 15. Blocking column; 151. Disc structure; 16. Limiting block; 161. Blind hole; 162. Dovetail groove; 163. Sealing ring; 164. Connecting rod; 17. Compression spring; 18. Control rod; 181. Trapezoidal guide rail. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Example 1: As Figure 1 and Figure 2 As shown, a one-way throttle valve includes a valve body 10 with an inner cavity extending through a front end 11 and a rear end 12 of the valve body. An annular valve housing 13 is installed at the center of the inner cavity of the valve body 10, and a valve core 14 is installed inside the valve housing 13. It should be noted that, in this embodiment, when the one-way throttle valve is working normally, liquid enters the valve body from the front end 11 and flows out from the rear end 12 of the valve body.
[0025] The valve core 14 has a blocking post 15 connected to its front end, which is in clearance fit with the annular hole of the valve body 13. The rear end of the valve core 14 moves through a limiting block 16, which extends radially along the valve core 14 and is connected to the inner wall of the valve body 1. Specifically, the inner wall of the valve body 10 is provided with an internal thread 101, and both ends of the limiting block 16 are provided with external threads. The limiting block 16 and the inner wall of the valve body 10 are connected together by the mating of the internal thread 101 and the external thread.
[0026] In this embodiment, the limiting block and the valve body are connected by a thread, and the limiting block can be removed by rotating it for separate cleaning or replacement.
[0027] Specifically, a blind hole 161 extending in the front-rear direction is provided on the rear side of the limiting block 16, and a control rod 18 is movably inserted into the blind hole 161.
[0028] Among them, the inner wall of the blind hole 161 is provided with a dovetail groove 162, and the dovetail groove 162 passes through the outlet of the blind hole 161;
[0029] The outer wall of the control rod 18 is provided with a trapezoidal guide rail 181, and the trapezoidal guide rail 181 is movably inserted into the dovetail groove 162.
[0030] In this embodiment, the limit block can be rotated by rotating the control rod, which makes it easy to install or remove the limit block from the valve body; in addition, when the valve body is working normally, the control rod can be pulled out from the blind hole.
[0031] Specifically, the rear end of the blocking post 15 is provided with a slot (not shown), the depth direction of which is the same as the axial direction of the blocking post 15; the front end of the limiting block 16 is provided with a connecting rod 164 extending along the axial direction of the blocking post 15, the connecting rod 164 is movably inserted into the slot, and the compression spring 17 is sleeved on the connecting rod 164.
[0032] Specifically, the rear end of the blocking column 15 extends to the rear of the valve housing 13 and expands to form a disc structure 151, the cross-sectional area of which is larger than the cross-sectional area of the annular hole of the valve housing 13; wherein, the compression spring 17 is disposed between the disc structure 151 and the limiting block 16.
[0033] Specifically, a sealing ring 163 is fitted on the limiting block 16 between the disc structure 151 and the valve housing 13.
[0034] In this embodiment, when liquid enters the valve body from the front end, the liquid impacts the plugging post of the valve core and pushes the plugging post to move backward through the annular hole and exert force on the compression spring. At this time, the liquid can pass through the housing and flow out from the rear end. Due to the cooperation of the limiting groove and the limiting block, the limiting block is limited in the axial direction, so the compression spring is in a compressed state at this time. When liquid enters the valve body from the rear end, the liquid impacts the disc structure of the valve core, but the disc structure cannot pass through the annular hole, so the liquid cannot enter the front end through the valve core.
[0035] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.
Claims
1. A one-way choke valve characterized in that, The valve body comprises an inner cavity which extends through the front end and the rear end of the valve body; an annular valve shell is installed at the center of the inner cavity of the valve body, and a valve core is installed in the valve shell; the valve core comprises a plug column which is in clearance fit with the annular hole of the valve shell; the rear end of the plug column is connected with a limiting block through a compression spring, the limiting block extends along the radial direction of the plug column, and the limiting block is connected with the inner wall of the valve body.
2. The one-way restriction valve of claim 1, wherein The inner wall of the valve body is provided with internal threads, and the two ends of the limiting block are provided with external threads; the limiting block and the inner wall of the valve body are threadedly connected together through the cooperation of the internal threads and the external threads.
3. The one-way restriction valve of claim 2, wherein, The rear side of the limiting block is provided with a blind hole which extends in the front-rear direction, and a control rod is movably inserted into the blind hole. The inner wall of the blind hole is provided with a dovetail groove which extends through the outlet of the blind hole. The outer wall of the control rod is provided with a trapezoidal guide rail which is movably inserted into the dovetail groove.
4. The one-way restriction valve of claim 1, wherein The rear end of the plug column is provided with a slot, and the front end of the limiting block is provided with a connecting rod which extends along the axial direction of the plug column, the connecting rod is movably inserted into the slot, and the compression spring is sleeved on the connecting rod.
5. The one-way restriction valve of claim 4, wherein, The rear end of the plug column extends to the rear of the valve shell and is expanded to form a disc structure, the cross-sectional area of the disc structure is larger than the cross-sectional area of the annular hole of the valve shell; the compression spring is arranged between the disc structure and the limiting block.
6. The one-way restriction valve of claim 5, wherein, A sealing ring is sleeved on the limiting block between the disc structure and the valve shell.