Pass-through angle valve

Abstract

This invention relates to the field of valve technology, and particularly to a straight-through angle valve, comprising an inlet pipe and an outlet pipe on the same axis. The inlet pipe is sleeved outside the outlet pipe, and the outlet pipe can slide axially relative to the inlet pipe. The inlet pipe includes an inlet section and a valve core section, and the outlet pipe includes a valve stem section and an outlet section. One end of the valve stem section is connected to the outlet section, and the other end is located inside the inlet section and is provided with a limiting plate to prevent the outlet pipe from detaching from the inlet pipe. An air chamber is formed between the inner wall of the valve core section and the outer wall of the outlet pipe. A regulating valve for controlling the gas entering and exiting the air chamber is provided on the cavity wall of the air chamber. At least one water inlet is provided on the outer circumferential surface of the valve stem section. When the water inlet is located in the inlet section, the valve is open; when the water inlet is located in the valve core section, the valve is closed. The beneficial effects of this invention are: eliminating water hammer effect in the pipeline and improving the practicality of the angle valve.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and specifically to a straight-through angle valve. Background Technology

[0002] Angle valves, as core opening, closing, and flow control accessories in bathroom piping systems, are widely installed at the water inlet of toilets, washbasins, water heaters, smart bathroom devices, and other equipment. A common angle valve structure on the market, as shown in the document published by patent application number 202121329774.0, includes a valve body with a valve cavity inside. The valve cavity contains a valve core controlled by a valve stem. The valve body includes a filter mounting part located on one side of the valve cavity, an inlet located on the other side of the valve cavity, and an outlet located on the outer wall of the filter mounting part. The end of the filter mounting part facing away from the valve cavity has a detachable plug with a detachable filter cartridge on the plug. The filter cartridge is installed in the filter mounting part through the plug.

[0003] Such angle valves have some drawbacks in actual use: 1. The valve core is a spherical valve core, but the spherical valve core has high process requirements. If the spherical valve core process is not up to standard, the angle valve will leak; 2. The filter installation part of the angle valve has an outlet on its outer wall. The angle between the outlet and the inlet is 90 degrees. When the angle valve is installed in a corner or in a narrow space, the outlet will interfere with the wall, making installation difficult; 3. The valve core can be quickly turned on and off by rotating the valve stem with the handle. This will generate a water hammer effect in the pipeline and may even damage the valve. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a straight-through angle valve that eliminates water hammer effect in pipelines and improves the practicality of angle valves, in order to address the shortcomings of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a straight-through angle valve, comprising an inlet pipe and an outlet pipe on the same axis, wherein the inlet pipe is sleeved outside the outlet pipe, and the outlet pipe can slide axially relative to the inlet pipe; the inlet pipe includes an inlet section and a valve core section, and the outlet pipe includes a valve stem section and an outlet section; one end of the valve stem section is connected to the outlet section, and the other end is located inside the inlet section and is provided with a limiting plate to prevent the outlet pipe from detaching from the inlet pipe; an air chamber is formed between the inner wall of the valve core section and the outer wall of the outlet pipe; a regulating valve for controlling the gas entering and exiting the air chamber is provided on the cavity wall of the air chamber; at least one inlet is provided on the outer circumferential surface of the valve stem section; when the inlet is located in the inlet section, the valve is open; when the inlet is located in the valve core section, the valve is closed.

[0006] The present invention, possessing the above-mentioned features, involves the following: When the outlet pipe is pressed towards the inlet section, the gas in the air chamber flows to the outside of the water pipe through the regulating valve. The outlet pipe moves axially to the inlet and into the inlet section, opening the valve. This allows all the gas to be discharged from the air chamber. The outlet pipe moves under the pressure of the water until the limiting plate blocks the valve core section port. At this point, the inlet is located inside the valve core section, and the valve closes. With this valve core structure, the air chamber can alleviate water pressure impact when the valve is closed, eliminating the water hammer effect in the pipeline and preventing damage to the valve and pipeline. The inlet and outlet pipes are coaxial, avoiding interference with walls when installed at corners or in confined spaces, thus improving the practicality of the angle valve. The ball valve core is eliminated, and the inlet is used in conjunction with the inner wall of the valve core section to achieve a sliding seal of the valve. This results in a simple structure, low processing precision requirements, and improved sealing performance.

[0007] A further feature of the present invention is that the regulating valve includes a valve body disposed on the outlet pipe, and a piston assembly that can reciprocate axially within the valve body. The piston assembly includes a piston and a piston rod connected to the piston. An air gap is provided between the outer circumferential surface of the piston and the inner wall of the valve body. The first end face of the valve body is provided with an air vent that communicates with the air chamber, and the second end face is provided with an air outlet that communicates with the outside. The end of the piston rod that is not connected to the piston passes through the second end face of the valve body. A first spring is sleeved on the piston rod to keep the piston blocking the air vent. One end of the first spring abuts against the inner wall of the first end face, and the other end abuts against the piston.

[0008] The present invention, which has the above-mentioned features, is such that by setting a piston and a first spring, the regulating valve remains closed when no external force is applied; when the water outlet pipe is pressed, the gas in the air chamber pushes the piston, and the gas can pass through the regulating valve to the outside, thus opening the valve; when the piston rod is pulled, the vent hole is opened, and all the gas in the air chamber is discharged, thus closing the valve; by using this regulating valve, the opening and closing of the valve is realized.

[0009] A further feature of the present invention is that: a sealing gasket is provided on the end face of the piston facing the vent hole, the outer peripheral surface of the sealing gasket is provided with a first chamfer inclined towards the vent hole, an annular sealing sheet is provided on the inner wall of the first end face, and a second chamfer is provided on the inner peripheral surface of the annular sealing sheet to match the first chamfer.

[0010] The present invention, which has the above-mentioned features, improves the sealing performance of the piston to the vent by setting chamfers on the sealing gasket and the annular sealing sheet respectively, so that when the piston blocks the vent hole, the sealing gasket is embedded in the annular sealing sheet.

[0011] A further feature of the present invention is that: the water inlet is located on the outer circumferential surface of one end of the valve stem section where the limiting plate is located; a guide ring is provided on the inner wall of one end of the valve core section that connects to the water inlet section; the free end of the guide ring is located in the air chamber; the guide ring is sleeved on the outside of the valve stem section; and at least one first sealing ring is provided between the guide ring and the valve stem section.

[0012] The present invention, which has the above-mentioned features, provides axial guidance to the valve stem section by setting a guide ring to prevent the water pipe from shifting or getting stuck during sliding. A sealing ring is set inside the guide ring to achieve dynamic sealing between the guide ring and the valve stem section, preventing water from entering the air chamber and improving the sealing performance when the air inlet is closed.

[0013] A further feature of the present invention is that the inner diameter of the inlet section is smaller than the inner diameter of the valve core section, a first annular end face is formed between the inlet section and the valve core section, a second spring is provided in the air chamber to keep the limiting plate in contact with the first annular end face, a second annular end face is formed between the outer circumferential surface of the guide ring and the inner wall of the valve core section, and the second spring is sleeved on the valve stem section and the guide ring, with one end abutting against the second annular end face and the other end abutting against the end face of the outlet section.

[0014] The present invention, which has the above-mentioned features, keeps the valve closed by installing a spring in the air chamber so that the limiting plate is always in contact with the first annular end face when the angle valve is not operated.

[0015] A further feature of the present invention is that at least one second sealing ring is provided between the valve core section and the water outlet section.

[0016] The present invention, which has the above-mentioned features, increases the sealing performance of the water outlet pipe and the water inlet pipe by setting a sealing ring.

[0017] A further feature of the present invention is that the end of the water inlet section that does not cooperate with the water outlet pipe is provided with an external thread, and the end of the water outlet section that does not cooperate with the water inlet pipe is provided with an external thread.

[0018] The present invention, which has the above-mentioned features, has external threads on both the inlet and outlet sections to adapt to bathroom pipe interfaces, making installation simple and improving the practicality of the angle valve.

[0019] A further feature of the present invention is that a third sealing ring is fitted at one end of the valve stem section placed in the water inlet section. The third sealing ring is in contact with the limiting plate. When the valve is closed, the third sealing ring is in contact with the first annular end face.

[0020] The present invention, which has the above-mentioned features, improves the sealing performance of the valve when it is closed by setting a third sealing ring.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0023] Figure 2 This is a cross-sectional view of an embodiment of the present invention.

[0024] Figure 3This is a cross-sectional view of the water inlet pipe according to an embodiment of the present invention.

[0025] Figure 4 This is a cross-sectional view of the water outlet pipe according to an embodiment of the present invention.

[0026] Figure 5 This is a cross-sectional view of the regulating valve according to an embodiment of the present invention. Detailed Implementation

[0027] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0028] like Figure 1-5 The straight-through angle valve shown includes an inlet pipe 1 and an outlet pipe 2 on the same axis. The inlet pipe 1 is sleeved outside the outlet pipe 2, and the outlet pipe 2 can slide axially relative to the inlet pipe 1. The inlet pipe 1 includes an inlet section 11 and a valve core section 12. The outlet pipe 2 includes a valve stem section 21 and an outlet section 22. One end of the valve stem section 21 is connected to the outlet section 22, and the other end is located inside the inlet section 11 and is provided with a limiting plate 23 to prevent the outlet pipe 2 from detaching from the inlet pipe 1. The limiting plate 23 and the valve stem section 21 are separate structures assembled with the water inlet pipe. The connection between the two can be a threaded connection. An air chamber 13 is formed between the inner wall of the valve core section 12 and the outer wall of the water outlet pipe 2. The cavity wall of the air chamber 13 is provided with a regulating valve 3 to control the gas entering and exiting the air chamber 13. Two water inlets 211 are symmetrically provided on the outer circumference of the valve stem section 21. When the water inlet 211 is located in the water inlet section 11, the valve is open. When the water inlet 211 is located in the valve core section 12, the valve is closed.

[0029] The regulating valve 3 includes a valve body 31 installed on the outlet pipe 2. The valve body 31 has a piston assembly that can slide back and forth axially. The piston assembly includes a piston 32 and a piston rod 33 connected to the piston 32. There is a venting gap between the outer circumferential surface of the piston 32 and the inner wall of the valve body 31. The first end face of the valve body 31 has a vent hole 311 that communicates with the air chamber 13, and the second end face has an air outlet hole 312 that communicates with the outside. The end of the piston rod 33 that is not connected to the piston 32 passes through the second end face of the valve body 31. A first spring 35 is sleeved on the piston rod 33 to keep the piston 32 blocking the vent hole 311. One end of the first spring 35 abuts against the inner wall of the first end face, and the other end abuts against the piston 32.

[0030] A sealing gasket 34 is provided on the end face of the piston 32 facing the vent 311. The outer peripheral surface of the sealing gasket 34 is provided with a first chamfer 341 that is inclined toward the vent 311. An annular sealing sheet 36 is provided on the inner wall of the first end face. The inner peripheral surface of the annular sealing sheet 36 is provided with a second chamfer 361 that matches the first chamfer 341.

[0031] The inlet 211 is located on the outer circumferential surface of the valve stem section 21 where the limiting plate 23 is set. The inner wall of the end port of the valve core section 12 that connects to the inlet section 11 is provided with a guide ring 14. The free end of the guide ring 14 is located in the air chamber 13. The guide ring 14 is sleeved on the outside of the valve stem section 21. At least one first sealing ring 4 is provided between the guide ring 14 and the valve stem section 21.

[0032] The inner diameter of the inlet section 11 is smaller than the inner diameter of the valve core section 12. A first annular end face 16 is formed between the inlet section 11 and the valve core section 12. A second spring 5 is provided in the air chamber 13 to keep the limiting plate 23 in contact with the first annular end face 16. A second annular end face 15 is formed between the outer peripheral surface of the guide ring 14 and the inner wall of the valve core section 12. The second spring 5 is sleeved on the valve stem section 21 and the guide ring 14, with one end abutting against the second annular end face 15 and the other end abutting against the end face of the outlet section 22.

[0033] At least one second sealing ring 6 is provided between the valve core section 12 and the water outlet section 22, and a third sealing ring 7 is fitted on the valve stem section 21. The third sealing ring 7 is in contact with the limiting plate 23. When the valve is closed, the third sealing ring 7 is in contact with the first annular end face 16.

[0034] The end of the inlet section 11 that does not mate with the outlet pipe 2 is provided with an external thread, and the end of the outlet section 22 that does not mate with the inlet pipe 1 is provided with an external thread.

[0035] Under normal conditions, the first spring inside the regulating valve causes the piston to block the vent, keeping the valve closed. When the outlet pipe is pressed towards the inlet section, the gas in the air chamber pushes the piston through the vent, compressing the first spring. The gas flows from the vent gap to the outlet, allowing the outlet pipe to slide axially until the inlet moves into the inlet section, opening the valve. Pulling the piston rod in the regulating valve causes the piston to leave the vent, expelling all the gas from the air chamber. The outlet pipe moves under water pressure until the limit plate blocks the valve core section port. At this point, the inlet is located inside the valve core section, and the valve closes.

Claims

1. A straight-through angle valve, characterized in that: The device includes an inlet pipe and an outlet pipe on the same axis. The inlet pipe is sleeved outside the outlet pipe, and the outlet pipe can slide axially relative to the inlet pipe. The inlet pipe includes an inlet section and a valve core section, and the outlet pipe includes a valve stem section and an outlet section. One end of the valve stem section is connected to the outlet section, and the other end is located inside the inlet section and is provided with a limiting plate to prevent the outlet pipe from detaching from the inlet pipe. An air chamber is formed between the inner wall of the valve core section and the outer wall of the outlet pipe. A regulating valve for controlling the gas entering and exiting the air chamber is provided on the cavity wall of the air chamber. At least one water inlet is provided on the outer circumferential surface of the valve stem section. When the water inlet is located in the inlet section, the valve is open; when the water inlet is located in the valve core section, the valve is closed.

2. A straight-through angle valve according to claim 1, characterized in that: The regulating valve includes a valve body mounted on the outlet pipe. The valve body contains a piston assembly that can slide back and forth axially. The piston assembly includes a piston and a piston rod connected to the piston. A venting gap is left between the outer circumferential surface of the piston and the inner wall of the valve body. The first end face of the valve body has a vent hole communicating with the air chamber, and the second end face has an outlet hole communicating with the outside. The end of the piston rod not connected to the piston passes through the second end face of the valve body. A first spring is sleeved on the piston rod to keep the piston blocking the vent hole. One end of the first spring abuts against the inner wall of the first end face, and the other end abuts against the piston.

3. A straight-through angle valve according to claim 2, characterized in that: The piston has a sealing gasket on its end face facing the vent hole. The outer circumferential surface of the sealing gasket has a first chamfer that is inclined toward the vent hole. The inner wall of the first end face has an annular sealing sheet. The inner circumferential surface of the annular sealing sheet has a second chamfer that matches the first chamfer.

4. A straight-through angle valve according to claim 1, characterized in that: The inlet is located on the outer circumferential surface of the valve stem section where the limiting plate is located. The inner wall of the end port of the valve core section that connects to the inlet section is provided with a guide ring. The free end of the guide ring is located in the air chamber. The guide ring is sleeved on the outside of the valve stem section. At least one first sealing ring is provided between the guide ring and the valve stem section.

5. A straight-through angle valve according to claim 4, characterized in that: The inner diameter of the inlet section is smaller than the inner diameter of the valve core section. A first annular end face is formed between the inlet section and the valve core section. A second spring is provided in the air chamber to keep the limiting plate in contact with the first annular end face. A second annular end face is formed between the outer circumferential surface of the guide ring and the inner wall of the valve core section. The second spring is sleeved on the valve stem section and the guide ring, with one end abutting against the second annular end face and the other end abutting against the end face of the outlet section.

6. A straight-through angle valve according to claim 1, characterized in that: At least one second sealing ring is provided between the valve core section and the water outlet section.

7. A straight-through angle valve according to claim 1, characterized in that: The end of the inlet section that does not mate with the outlet pipe is provided with an external thread, and the end of the outlet section that does not mate with the inlet pipe is provided with an external thread.

8. A straight-through angle valve according to claim 5, characterized in that: The valve stem section is fitted with a third sealing ring at one end of the water inlet section. The third sealing ring is in contact with the limiting plate. When the valve is closed, the third sealing ring is in contact with the first annular end face.

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