Angle valve with non-return function

Abstract

This utility model provides an angle valve with a check valve function, including a valve body (1), one end of which has an inlet channel (101) and the other end of which has an outlet channel (102). A check valve assembly is provided within the inlet channel (101), including a mounting sleeve. The mounting sleeve has a flow channel communicating with the inlet channel (101), and a check valve disc (6) is slidably fitted within the flow channel. The check valve disc (6) can block or open the flow channel. The mounting sleeve is installed within the inlet channel (101). This angle valve with a check valve function integrates the check valve within the angle valve, enabling simultaneous control of pipeline flow and prevention of backflow and water hammer impact without the need for additional independent check valves connected in series. This effectively simplifies the system structure, reduces space occupation, lowers costs, and reduces leakage risks.

Description

Technical Field

[0001] This utility model relates to the field of fluid control technology, and more specifically to an angle valve with a check valve function. Background Technology

[0002] Angle valves are a commonly used basic control component in building water supply and drainage and domestic water piping systems. They are usually installed at pipe branch nodes or at the water inlet of various water appliances (such as toilets, water heaters, water purifiers, etc.). By controlling the opening and closing of the valve core, they enable the management of water flow interruption for a single circuit or a single appliance, and are a key link in precise water control in the home.

[0003] However, existing angle valves have significant shortcomings: conventional angle valves only have a one-way opening and closing function and lack a check valve. In indoor piping systems, fluctuations in water pressure caused by water usage and equipment start-up and shutdown can lead to a series of problems. On the one hand, there is a high risk of backflow. If the angle valve installed before the toilet lacks a check valve function, when the water pressure drops, sewage from the toilet tank may flow back into the indoor piping, contaminating the entire indoor water network. On the other hand, there is a significant risk of water hammer. If the angle valves before appliances such as water heaters and water purifiers cannot prevent backflow, the reverse water flow during water hammer can damage the appliances and affect their lifespan.

[0004] To address these issues, current practices often require additional independent check valves connected in series before and after the angle valve. However, this introduces new drawbacks: increased system complexity, increased installation space requirements, higher costs, and an increased number of connection points, which can easily lead to leakage risks and affect the stability and reliability of the pipeline system. Therefore, there is an urgent need to develop an angle valve with both opening / closing and check functions and a more optimized structure to overcome the shortcomings of existing technologies. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an angle valve with a check valve function. By integrating the check valve into the angle valve, the pipeline on / off control and the functions of preventing backflow of medium and water hammer impact can be realized simultaneously without additional series connection of independent check valves. This effectively simplifies the system structure, reduces space occupation, and reduces cost and leakage risk.

[0006] The technical solution of this utility model is to provide an angle valve with a check valve function, including a valve body, one end of which is provided with an inlet channel and the other end of which is provided with an outlet channel; a check valve component is provided in the inlet channel, the check valve component includes a mounting sleeve, the mounting sleeve is provided with a flow channel communicating with the inlet channel, a check valve disc is slidably fitted in the flow channel, the check valve disc can block or open the flow channel; the mounting sleeve is installed in the inlet channel.

[0007] Compared with the prior art, the angle valve with check function of this utility model has the following advantages: By setting a check component in the valve body inlet channel, the flow channel of the mounting sleeve is connected to the inlet channel, and the check valve disc can slide to block or guide the flow channel, effectively solving the problems of medium backflow and water hammer impact caused by the lack of check function in existing angle valves, avoiding sewage backflow and water quality pollution, protecting water appliances, eliminating the need for additional series check valves, reducing system complexity, installation space occupation and cost, reducing connection leakage risk, and improving the stability and reliability of pipeline system.

[0008] As an improvement, the mounting sleeve includes a sleeve and a gasket. The sleeve is installed within the inlet channel; the gasket is installed at the outlet end of the sleeve, and one end of the check valve disc slides onto the gasket; a valve seat is provided inside the inlet end of the sleeve, and the sealing end of the check valve disc is pressed against the valve seat by an elastic element; when the check valve disc slides, the sealing end of the check valve disc can seal or open the flow hole of the valve seat. By designing the mounting sleeve as a combination structure of a sleeve and a gasket, the guiding and sealing functions of the check valve disc are separated, ensuring the smooth sliding of the check valve disc and improving the sealing reliability through the cooperation between the valve seat and the sealing end.

[0009] As an improvement, the gasket has a mounting hole in its center, and a guide sleeve is installed in the mounting hole. One end of the check valve disc is a guide rod, which is slidably fitted within the guide sleeve. An elastic element is provided between the guide sleeve and the check valve disc, providing a thrust to the check valve disc as it moves towards the valve seat. The sliding fit between the guide sleeve and the guide rod provides precise guidance for the check valve disc, preventing misalignment during movement and ensuring the alignment accuracy between the sealing end and the valve seat.

[0010] As an improvement, a limiting step is provided on the outer wall of the guide sleeve. One end of the guide sleeve passes through the mounting hole and protrudes outside the gasket, with the limiting step limiting it to the inner side of the gasket. A first retaining ring groove is provided on the outer wall of the end of the guide sleeve protruding outside the gasket, and a first retaining ring is embedded in the first retaining ring groove, limiting it to the outer side of the gasket. The dual limiting design of the limiting step and the first retaining ring ensures that the guide sleeve does not shift under the impact of high-pressure water flow, guaranteeing the long-term reliability of the check valve assembly.

[0011] As an improvement, the gasket is provided with a through hole, a crossbar in the middle of the through hole, and a mounting hole in the middle of the crossbar. The through hole design with the crossbar optimizes the fluid channel layout, reduces obstruction to water flow while ensuring stable support of the guide sleeve, effectively increases the medium flow area, reduces water flow resistance, and improves fluid throughput efficiency.

[0012] As an improvement, the elastic element is a return spring. A first spring seat is provided at one end of the guide sleeve near the return spring, and a second spring seat is provided on the side wall of the check valve disc. The return spring is fitted over the guide rod, with its two ends respectively fitted onto the first and second spring seats. The spring seats allow for more accurate positioning of the return spring, preventing tilting or twisting during compression and ensuring the stability of the check valve disc's reset force.

[0013] As an improvement, a sealing step is provided on the inner wall of the inlet end of the sleeve, forming the valve seat. The sealing end of the check valve disc is a hemispherical surface, which abuts against the valve seat. The line seal design between the hemispherical sealing end and the annular valve seat increases the sealing specific pressure, enabling reliable sealing even under low-pressure conditions.

[0014] As an improvement, a second retaining ring groove is provided on the inner wall of the inlet channel, and a second retaining ring is embedded in the groove. The second retaining ring is positioned on the outer side of the sleeve. The limiting function of the second retaining ring prevents the sleeve from loosening under water flow vibration, ensuring the overall stability of the check valve assembly. This structure requires no welding or threaded connection, making it easy to disassemble and replace, and improving maintenance convenience.

[0015] As an improvement, an annular boss is provided on the inner wall of the inlet channel, and the inner end of the sleeve abuts the gasket against the annular boss. The annular boss provides precise installation positioning for the gasket, ensuring uniform force on the gasket and avoiding sealing failure due to installation deviation.

[0016] As an improvement, a sealing ring is provided between the outer wall of the sleeve and the inner wall of the inlet channel. The sealing ring between the sleeve and the inlet channel effectively prevents the medium from leaking out from the gap. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the angle valve with check valve function according to this utility model.

[0018] Figure 2 for Figure 1 A magnified structural diagram of part A in the middle.

[0019] Figure 3 This is a schematic diagram of the sleeve of the angle valve with check valve function according to this utility model.

[0020] Figure 4 This is a schematic diagram of the gasket structure of the angle valve with check valve function according to this utility model.

[0021] Figure 5This is a schematic diagram of the guide sleeve of the angle valve with check valve function of this utility model.

[0022] As shown in the figure: 1. Valve body, 101. Inlet channel, 102. Outlet channel, 103. Annular boss, 104. Second retaining ring groove, 2. Sleeve, 201. Sealing step, 3. Gasket, 301. Through hole, 302. Crossbar, 303. Mounting hole, 4. Second retaining ring, 5. Sealing ring, 6. Check valve disc, 601. Sealing end, 602. Guide rod, 603. Second spring seat, 7. Guide sleeve, 701. First spring seat, 702. First retaining ring groove, 703. Limiting step, 8. Return spring, 9. First retaining ring. Detailed Implementation

[0023] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0024] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0025] It should also be understood that the terms "comprising," "having," "including," and "containing," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. Furthermore, when expressions such as "...at least one" appear after a list of listed features, they modify the entire listed feature, not individual elements in the list.

[0026] like Figures 1 to 5 As shown, this utility model discloses an angle valve with a check valve function, including a valve body 1. One end of the valve body 1 is provided with an inlet channel 101, and the other end of the valve body 1 is provided with an outlet channel 102. A check valve component is provided in the inlet channel 101.

[0027] The check valve assembly includes a mounting sleeve, which has a flow channel communicating with the inlet channel 101. The mounting sleeve includes a sleeve 2 and a gasket 3. The sleeve 2 is installed within the inlet channel 101, and the gasket 3 is installed at the outlet end of the sleeve 2. The inner cavity of the sleeve 2 forms the flow channel.

[0028] The inner wall of the entry channel 101 is provided with an annular protrusion 103, and the inner end of the sleeve 2 abuts the gasket 3 against the annular protrusion 103. The inner wall of the entry channel 101 is provided with a second retaining ring groove 104, in which a second retaining ring 4 is embedded. The second retaining ring 4 is positioned on the outer side of the sleeve 2, and the sleeve 2 can be fixedly installed within the entry channel 101 by means of the second retaining ring 4. A sealing ring 5 is provided between the outer wall of the sleeve 2 and the inner wall of the entry channel 101, and the sealing ring 5 seals the gap between the sleeve 2 and the entry channel 101.

[0029] A check valve disc 6 is slidably fitted inside the sleeve 2. The check valve disc 6 includes a sealing end 601 and a guide rod 602. The sealing end 601 has a hemispherical structure, and the hemispherical surface is the sealing surface. One end of the guide rod 602 is connected to the middle of the plane of the sealing end 601, and the guide rod 602 is integrally formed with the sealing end 601. The gasket 3 has a through hole 301, a crossbar 302 in the middle of the through hole 301, and a mounting hole 303 in the middle of the crossbar 302.

[0030] A guide sleeve 7 is installed in the mounting hole 303. A limiting step 703 is provided on the outer side wall of the guide sleeve 7. One end of the guide sleeve 7 passes through the mounting hole 303 and protrudes outside the gasket 3. The limiting step 703 limits the gasket 3 to the inner side. A first retaining ring groove 702 is provided on the outer side wall of the end of the guide sleeve 7 that protrudes outside the gasket 3. A first retaining ring 9 is embedded in the first retaining ring groove 702. The first retaining ring 9 limits the gasket 3 to the outer side.

[0031] The guide rod 602 of the check valve disc 6 is slidably fitted within the guide sleeve 7. An elastic element is provided between the guide sleeve 7 and the check valve disc 6, providing a thrust to the check valve disc 6 towards the valve seat. The elastic element is a return spring 8. A first spring seat 701 is provided at one end of the guide sleeve 7 near the return spring 8, and a second spring seat 603 is provided at the connection between the sealing end 601 of the check valve disc 6 and the guide rod 602. The return spring 8 is fitted over the guide rod 602, with its two ends respectively fitted onto the first spring seat 701 and the second spring seat 603.

[0032] The sleeve 2 has a valve seat inside its inlet end, and a sealing step 201 is provided on the inner wall of the inlet end of the sleeve 2, forming the valve seat. The hemispherical surface of the sealing end 601 of the check valve disc 6 abuts against the valve seat. When the check valve disc 6 slides, the sealing end 601 of the check valve disc 6 can seal or open the flow hole 301 of the valve seat.

[0033] The working principle of the angle valve with check function disclosed in this utility model is as follows: When the fluid flows in the forward direction, the medium pressure pushes the check valve disc 6 to overcome the elastic force of the return spring 8 and slide along the guide sleeve 7, so that the sealing end 601 separates from the valve seat, the valve seat through hole 301 opens, and the medium flows through the inner cavity of the sleeve 2 and the through hole 301 of the gasket 3 with cross bar 302 to the outflow channel 102; when the fluid flows backward, the return spring 8 pushes the check valve disc 6 to reset, and the hemispherical surface of the sealing end 601 forms a line seal with the valve seat, blocking the reverse flow path. The greater the reverse pressure, the more reliable the seal, realizing unidirectional medium flow and automatic blocking of reverse flow.

[0034] The above are merely specific embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Any modifications or equivalent substitutions to this utility model without departing from its spirit and scope should be covered within the protection scope of the claims of this utility model.

Claims

1. An angle valve with check valve function, comprising a valve body (1), wherein one end of the valve body (1) is provided with an inlet channel (101) and the other end of the valve body (1) is provided with an outlet channel (102); characterized in that: The inlet channel (101) is provided with a check component, which includes a mounting sleeve. The mounting sleeve is provided with a flow channel that communicates with the inlet channel (101). A check valve (6) is slidably fitted in the flow channel. The check valve (6) can block or open the flow channel. The mounting sleeve is installed in the inlet channel (101).

2. The anti-return angular valve according to claim 1, characterized in that: The mounting sleeve includes a sleeve (2) and a gasket (3). The sleeve (2) is installed in the inlet channel (101). The gasket (3) is installed at the outlet end of the sleeve (2). One end of the check valve disc (6) is slidably fitted on the gasket (3). A valve seat is provided in the inlet end of the sleeve (2). The sealing end (601) of the check valve disc (6) is pressed against the valve seat by an elastic element. When the check valve disc (6) slides, the sealing end (601) of the check valve disc (6) can seal or open the flow hole (301) of the valve seat.

3. The anti-return angular valve according to claim 2, characterized in that: The gasket (3) has a mounting hole (303) in the middle, and a guide sleeve (7) is installed in the mounting hole (303). One end of the check valve disc (6) is a guide rod (602), and the guide rod (602) is slidably fitted in the guide sleeve (7). An elastic element is provided between the guide sleeve (7) and the check valve disc (6), and the elastic element provides a thrust to the check valve disc (6) to move towards the valve seat.

4. The anti-return angular valve according to claim 3, characterized in that: The guide sleeve (7) has a limiting step (703) on its outer side wall. One end of the guide sleeve (7) passes through the mounting hole (303) and protrudes outside the gasket (3). The limiting step (703) limits the gasket (3) to the inner side. The guide sleeve (7) has a first retaining ring groove (702) on the outer side wall of the end protruding outside the gasket (3). A first retaining ring (9) is embedded in the first retaining ring groove (702). The first retaining ring (9) limits the gasket (3) to the outer side.

5. The anti-return angular valve according to claim 3, characterized in that: The gasket (3) is provided with a through hole (301), a crossbar (302) is provided in the middle of the through hole (301), and the mounting hole (303) is provided in the middle of the crossbar (302).

6. The anti-return angular valve according to claim 3, characterized in that: The elastic element is a return spring. The guide sleeve (7) is provided with a first spring seat (701) near the end of the return spring. The check valve disc (6) is provided with a second spring seat (603) on its side wall. The return spring is fitted outside the guide rod (602). The two ends of the return spring are respectively fitted on the first spring seat (701) and the second spring seat (603).

7. The anti-drainback angle valve of claim 2, wherein: The inner wall of the inlet end of the sleeve (2) is provided with a sealing step (201), the sealing step (201) forms the valve seat, and the sealing end (601) of the check valve disc (6) is a hemispherical surface, which abuts against the valve seat.

8. The anti-return angular valve according to claim 7, characterized in that: The inner wall of the entry channel (101) is provided with a second retaining ring groove (104), and a second retaining ring (4) is embedded in the second retaining ring groove (104). The second retaining ring (4) is limited to the outside of the sleeve (2).

9. The anti-drainback angle valve of claim 2, wherein: The inner wall of the access channel (101) is provided with an annular boss (103), and the inner end of the sleeve (2) presses the gasket (3) against the annular boss (103).

10. The anti-drainback angle valve of claim 2, wherein: A sealing ring (5) is provided between the outer wall of the sleeve (2) and the inner wall of the inlet channel (101).

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