Pull-type reset flushing and filling valve
By designing a guide slider and a conical spring, the problems of valve core misalignment and rusting of the positioning plate were solved, thereby improving the reliability and cost of the flushing valve.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-04-03
AI Technical Summary
In existing irrigation valve structures, the valve core is prone to misalignment during the return process, leading to poor leakage. The positioning plate is also prone to rusting and has a complex structure with high cost.
The valve core is designed with a guide slider and a conical spring. The front end of the valve core is equipped with a guide slider, and the rear end is pulled back by a conical spring. The positioning plate is eliminated. The guide taper and the self-centering characteristics of the spring are used to ensure smooth reset of the valve core and avoid deflection.
It improves the reliability of the irrigation valve, reduces assembly difficulty and cost, eliminates the risk of rust on the positioning plate, and ensures that the valve core can smoothly reset under any circumstances.
Smart Images
Figure CN224079666U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of air conditioning component technology, specifically a traction-type reset flushing valve. Background Technology
[0002] Currently available flushing valves consist of components including: valve body, valve core, sealing ring, spring, and positioning plate. The positioning plate secures the spring and limits the valve core's position. The spring pushes the valve core, which, under the action of the sealing ring, forms a seal with the valve body. During flushing, the valve core is pushed in the opposite direction, compressing the spring and opening the flushing valve for rapid flushing. After flushing, the valve core returns to its original position under the spring's thrust, completing the entire flushing process.
[0003] The current flushing valve structure has the following three shortcomings: 1. The valve core is pushed into the valve body sealing surface under the action of spring force, lacking forward guidance. During the rear guidance or limiting aging process, the valve core is prone to deflection during the return process, resulting in the valve core failing to return effectively and causing poor flushing valve leakage; 2. The positioning plate bears the fixing and limiting function of two important components, the spring and the valve core. Deviations in the part's shape, size, and assembly can cause the valve core guidance to fail, resulting in the valve core failing to return effectively and causing poor flushing valve leakage; 3. The structure is relatively complex and costly. The positioning plate, made of carbon steel, is an indispensable and important component, and it is prone to problems such as rusting. Utility Model Content
[0004] The purpose of this invention is to provide a traction-type reset flushing valve to solve the problems mentioned in the background art.
[0005] The technical solution adopted in this utility model is as follows:
[0006] A traction-type reset flushing valve includes a valve body, a valve core disposed within the valve body, the valve body and the valve core being sealed together by a sealing element, a spring being sleeved on the outer rear end of the valve core, and a plurality of guide sliders arranged in an annular array on the outer front end of the valve core, the guide sliders being slidably connected to the inner wall of the valve body.
[0007] Preferably, the valve body cavity includes an external threaded end hole, a sealing hole, and an internal threaded end hole arranged from front to back. The valve core includes a guide section, a sealing groove, a sealing end face, a core rod, and a positioning step arranged sequentially from front to back. The guide section is located inside the external threaded end hole, and a plurality of guide sliders are arranged in a circular array on the outside of the guide section. All of the guide sliders are slidably connected to the inner wall of the external threaded end hole. The sealing element is engaged in the sealing groove. The sealing element and the sealing end face cooperate to achieve the sealing of the sealing hole. The core rod and the positioning step are located inside the internal threaded end hole, and the spring is sleeved on the outside of the core rod.
[0008] Preferably, the sealing element is an O-ring, and both the O-ring and the sealing end face slide and seal with the sealing hole. The front end of the sealing hole has a structure in which the inner diameter gradually decreases from front to back, which facilitates the O-ring sliding into the sealing hole.
[0009] Preferably, the sealing element is a Teflon ring, and the Teflon ring is pressed against the front side of the sealing hole to complete the seal.
[0010] Preferably, the spring is a conical spring, with its flared end positioned by the rear side of the sealing hole and its narrow end positioned by a positioning step.
[0011] Preferably, the external threaded end of the valve body is connected to the equipment via an external nut, and a sealing ring is fitted at the connection point; the internal threaded end of the valve body is connected to a quick connector.
[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0013] In this invention, the valve core is designed with a guiding and cooperating structure, and the reset is achieved by using a conical spring traction method. This double protection of guidance and traction ensures that the valve core does not deviate during the return process. At the same time, the valve core is designed with a guiding taper, and the valve body sealing surface inlet is also designed with a guiding taper to ensure that the valve core can be reset smoothly under any circumstances. Meanwhile, one end of the spring is positioned by the valve body step, and the other end acts directly on the valve core, without the transition of intermediate parts, which minimizes the risk of spring installation misalignment. Moreover, the design without a positioning plate completely eliminates the risk of positioning plate rust. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a cross-sectional view of the present invention;
[0016] Figure 3 This is a side sectional view of the present invention;
[0017] Figure 4 This is an enlarged view of the structure at point A of this utility model;
[0018] Figure 5 This is a schematic diagram of the Teflon end-face sealing structure of this utility model;
[0019] In the diagram: 1. Sealing ring; 2. Valve core; 21. Guide section; 211. Guide slider; 22. Sealing groove; 23. Sealing end face; 24. Core rod; 25. Positioning step; 3. Seal; 4. Valve body; 41. External thread end hole; 42. Sealing hole; 43. Internal thread end hole; 5. Spring. Detailed Implementation
[0020] The specific embodiments of this utility model are described in detail below.
[0021] The "range" disclosed in this utility model is defined by a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, which define the boundaries of a particular range. Ranges defined in this way can include or exclude endpoints and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 10–50 is listed for a specific parameter, it is also expected that ranges of 10–40 and 20–50 are also included. Furthermore, if the minimum range values are listed as 1 and 2, and the maximum range values are listed as 3, 4, and 5, then the following ranges are all expected: 1–3, 1–4, 1–5, 2–3, 2–4, and 2–5. In this application, unless otherwise stated, the numerical range "a–b" represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers. For example, the numerical range "0–5" means that all real numbers between "0–5" have been listed herein; "0–5" is merely a shortened representation of these numerical combinations.
[0022] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.
[0023] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.
[0024] Unless otherwise specified, all steps in this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.
[0025] Unless otherwise specified, the terms "comprising" and "including" as used in this application can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other components not listed may also be included, or that only the listed components may be included.
[0026] Unless otherwise specified, the reaction will proceed under normal temperature and pressure conditions.
[0027] Unless otherwise specified, all parts or percentages are by weight or by weight percentage.
[0028] In this invention, all the substances used are known substances that can be purchased or synthesized by known methods.
[0029] In this invention, all the devices or equipment used are conventional devices or equipment known in the art and are readily available.
[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0031] Example:
[0032] A traction-type reset flushing valve, such as Figure 1-5 As shown, the valve includes a valve body 4, a valve core 2 is provided inside the valve body 4, the valve body 4 and the valve core 2 are sealed and connected by a sealing element 3, a spring 5 is sleeved on the outer side of the rear end of the valve core 2, and a number of guide sliders 211 are provided in an annular array on the outer side of the front end of the valve core 2, and the guide sliders 211 are slidably connected to the inner wall of the valve body 4.
[0033] In one possible implementation, the inner cavity of the valve body 4 includes an external threaded end hole 41, a sealing hole 42, and an internal threaded end hole 43 arranged from front to back. The valve core 2 includes a guide section 21, a sealing groove 22, a sealing end face 23, a core rod 24, and a positioning step 25 arranged from front to back. The guide section 21 is located inside the external threaded end hole 41. A plurality of guide sliders 211 are arranged in a ring array on the outside of the guide section 21, and the plurality of guide sliders 211 are slidably connected to the inner wall of the external threaded end hole 41. The sealing element 3 is engaged in the sealing groove 22. The sealing element 3 and the sealing end face 23 cooperate to seal the sealing hole 42. The core rod 24 and the positioning step 25 are located inside the internal threaded end hole 43. The spring 5 is sleeved on the outside of the core rod 24.
[0034] In one possible implementation, the seal 3 is an O-ring, and both the O-ring and the sealing end face 23 slide and seal with the sealing hole 42. The front end of the sealing hole 42 adopts a structure in which the inner diameter gradually decreases from front to back, so as to facilitate the O-ring sliding into the sealing hole 42.
[0035] In one possible implementation, the seal 3 is a Teflon ring, which is pressed against the front side of the sealing hole 42 to complete the seal.
[0036] In one possible implementation, the spring 5 is a conical spring, with its flared end positioned by the rear side of the sealing hole 42 and its narrow end positioned by the positioning step 25.
[0037] In one possible implementation, the external thread end of the valve body 4 is connected to the equipment via an external nut, and a sealing ring 1 is fitted at the connection point. The internal thread end of the valve body 4 is connected to a quick connector.
[0038] By adopting the above technical solution:
[0039] The valve core 2 reset adopts a double safety of guidance and traction to ensure that the valve core 2 does not deviate during the return process. Both the valve core 2 and the valve body 4 are designed with guide cones as an auxiliary, which greatly improves the reliability of the flushing valve.
[0040] The core components such as valve body 4, spring 5, and valve core 2 have no intermediate parts, which reduces assembly requirements and improves precision.
[0041] The positioning plate parts without traditional structures completely eliminate the risk of rust on the positioning plates, reducing costs while saving energy and protecting the environment.
[0042] Spring 5 is a conical spring. Utilizing the self-centering and anti-skew characteristics of the conical spring, it can better pull the valve core 2 to reset, preventing skew during the return process from affecting the reset seal.
[0043] Working principle:
[0044] like Figure 1-5 As shown, the sealing ring 1 is installed in the rubber ring groove, and the flushing valve is connected to the equipment through the outer nut, using the sealing ring 1 for sealing; the other end of the valve body 4 has a structure for docking with the quick connector, and no internal thread is designed inside; one end of the valve core 2 has three edges that cooperate with and guide the valve body 4, and the groove part of the valve core 2 other than the three edges is the flow channel during flushing. The middle part of the valve core 2 is designed with a sealing groove 22, and the sealing element 3 is installed in the sealing groove 22 of the valve core 2. After the sealing groove 22, a valve core indentation cone angle is designed for the initial guidance when the valve core 2 returns to its original position; the valve body 4 has a sealing surface that cooperates with the sealing element 3, and the inlet of the sealing surface is designed with an indentation cone angle so that the sealing element 3 on the valve core 2 can smoothly enter the sealing surface of the valve body 4; the other end of the valve core 2 is designed with a positioning step 25 for positioning the small end of the conical spring 5. After the valve core 2 is fitted with the seal 3, it is inserted into the valve body 4 through the external thread end. The conical spring 5 is inserted into the valve body 4 through the internal thread end. The large end of the conical spring 5 is placed in the groove, close to the step inside the valve body 4. The small end is pressed into the small end step of the valve core 2 by the assembly tool. After the spring shrinks, it is stuck in the step of the valve core 2, completing the installation of the valve core assembly. By pressing the round end of the valve core 2, the conical spring 5 is compressed, and the valve core 2 opens for flushing. After flushing, the pressurized valve core is released. Under the action of the spring force of the conical spring 5, the valve core 2 is pulled back to its original position. After resetting, the O-ring on the valve core 2 enters the sealing area inside the valve body, resealing the flushing valve and completing one flushing process.
[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A traction-type reset flushing valve, characterized in that: The valve includes a valve body (4), a valve core (2) is provided inside the valve body (4), the valve body (4) and the valve core (2) are sealed and connected by a sealing element (3), a spring (5) is sleeved on the outer side of the rear end of the valve core (2), and a number of guide sliders (211) are provided in an annular array on the outer side of the front end of the valve core (2), and the guide sliders (211) are slidably connected to the inner wall of the valve body (4).
2. The traction-type reset flushing valve as described in claim 1, characterized in that: The inner cavity of the valve body (4) includes an external threaded end hole (41), a sealing hole (42), and an internal threaded end hole (43) arranged from front to back. The valve core (2) includes a guide section (21), a sealing groove (22), a sealing end face (23), a core rod (24), and a positioning step (25) arranged from front to back. The guide section (21) is located in the external threaded end hole (41). A number of guide sliders (211) are arranged in a ring array on the outside of the guide section (21), and the guide sliders (211) are all slidably connected to the inner wall of the external threaded end hole (41). The sealing element (3) is stuck in the sealing groove (22). The sealing element (3) and the sealing end face (23) cooperate to seal the sealing hole (42). The core rod (24) and the positioning step (25) are located in the internal threaded end hole (43). The spring (5) is sleeved on the outside of the core rod (24).
3. The traction-type reset flushing valve as described in claim 2, characterized in that: The sealing element (3) is an O-ring. The O-ring and the sealing end face (23) are slidably sealed with the sealing hole (42). The front end of the sealing hole (42) adopts a structure in which the inner diameter gradually decreases from front to back, so that the O-ring can slide into the sealing hole (42).
4. A traction-type reset flushing valve as described in claim 2, characterized in that: The sealing element (3) is a Teflon ring, which is pressed against the front side of the sealing hole (42) to complete the seal.
5. A traction-type reset flushing valve as described in claim 2, characterized in that: The spring (5) is a conical spring, with its flared end positioned by the rear side of the sealing hole (42) and its narrow end positioned by the positioning step (25).
6. The traction-type reset flushing valve as described in claim 1, characterized in that: The external thread end of the valve body (4) is connected to the equipment through an external nut, and a sealing ring (1) is provided at the connection. The internal thread end of the valve body (4) is connected to a quick connector.