Angle valve with filtering function

Abstract

The angle valve with the filtering function comprises a three-way body, a valve element shaft and a filter element shaft, a first through opening in the front end of the three-way body is a water inlet, a second through opening in the middle of the three-way body is a water outlet, the valve element shaft is inserted into the three-way body, the filter element shaft is inserted into a cavity of the valve element shaft, and the valve element shaft is inserted into the cavity of the filter element shaft. A water inlet hole is formed in the side wall of the front portion of the valve element shaft, a water outlet hole is formed in the side wall of the middle portion of the valve element shaft, water flow can enter an inner cavity of the valve element shaft from the water inlet hole, penetrates through the filter element shaft and then flows out of the water outlet hole to enter the second through opening, and the valve element shaft is connected with the tee joint body in a threaded mode. The filter element shaft is detachably connected with the valve element shaft in a threaded mode, and the thread direction between the filter element shaft and the valve element shaft is opposite to the thread direction between the valve element shaft and the three-way body. The utility model has the advantages that the filter element shaft is prevented from being accidentally opened when being dismounted and is prevented from being accidentally opened before being mounted.

Description

Technical Field

[0001] This utility model relates to an angle valve, and more particularly to an angle valve with a filtering function. Background Technology

[0002] Angle valves are familiar to most people. They are used at the inlets and outlets of water pipes in homes, connecting to various water-using appliances such as water heaters, toilets, kitchen faucets, and sink faucets. The basic function of an angle valve is to control the opening and closing of the water supply. As people's demands for water quality increase, not only are drinking water filtered by water purifiers, but more and more people also want to pre-filter their household water. Filtered water prevents sand, gravel, or metal filings from entering appliances such as water heaters, smart toilets, washing machines, and dishwashers. Therefore, people are starting to install pre-filters at the water inlets of their homes. However, pre-filters need to be installed on the main water pipes of the house, so they generally need to be pre-installed when the water pipes are laid out; otherwise, the pipes will be buried under the walls or floor later. To facilitate the filtration of water for related equipment after renovation, people came up with the idea of ​​installing a filter screen inside the angle valve. However, the existing filter screen structure inside the angle valve is relatively complex, making it inconvenient to disassemble and install the filter screen, and hindering daily maintenance. In particular, when disassembling the filter screen, it is easy to accidentally open the angle valve, causing water to splash everywhere. Utility Model Content

[0003] This utility model provides an angle valve with a filtering function, which has a simple structure and is easy to disassemble and maintain, overcoming the shortcomings of the prior art. The technical solution adopted by this utility model to solve its technical problem is:

[0004] A filtration valve includes a three-way body, a valve core, and a filter core. The three-way body has a first inlet at its front end, a second outlet in its middle, and a third outlet at its rear end coaxially with the first outlet. The valve core is inserted into the three-way body and can move axially back and forth relative to the three-way body to control the opening or closing of the first outlet. The valve core has an internal cavity, with an open rear end. The filter core is inserted into the cavity of the valve core along the open end. The valve core has an inlet hole on its front side wall and an outlet hole on its middle side wall. When the valve core opens the first outlet, water can flow from... The water inlet hole enters the internal cavity of the valve core shaft. After passing through the filter core shaft, the water flows out from the outlet hole and enters the second port. The valve core shaft is connected to the three-way body by a thread to achieve axial movement back and forth. The filter core shaft is detachably connected to the valve core shaft by a thread. The thread direction between the filter core shaft and the valve core shaft is opposite to the thread direction between the valve core shaft and the three-way body. Therefore, the rotation direction of rotating the valve core shaft to close the first port is the same as the rotation direction of rotating to disassemble the filter core shaft. Furthermore, the frictional force between the valve core shaft and the three-way body is greater than the frictional force between the filter core shaft and the valve core shaft.

[0005] In a preferred embodiment: the valve spindle is inserted into the three-way body from back to front through the third port; when the valve spindle moves forward, it gradually closes the first port; when it moves backward, it gradually opens the first port.

[0006] In a preferred embodiment: the valve spindle has a two-section structure, including a front valve spindle and a rear valve spindle. The front valve spindle and the rear valve spindle are axially connected but can rotate relative to each other in the circumferential direction. The rear valve spindle is connected to the three-way body by a thread to achieve forward and backward axial movement. The filter element shaft is connected to the rear valve spindle by a thread.

[0007] In a preferred embodiment: the front valve spindle is a plastic part, and the rear valve spindle is a metal part.

[0008] In a preferred embodiment: the three-way body has a flow-blocking step located near the first port, and the front end face of the front valve spindle and the flow-blocking step are provided with mutually matching pressing inclined surfaces.

[0009] In a preferred embodiment, the number of sealing rings between the rear valve spindle and the three-way body is greater than the number of sealing rings between the filter element shaft and the rear valve spindle.

[0010] In a preferred embodiment: the rear end of the rear valve spindle is located outside the tee body and includes a rotating handle, which is attached to the rear end of the rear valve spindle and the two are engaged circumferentially.

[0011] In a preferred embodiment: the filter element shaft includes a front filter screen portion, a middle threaded portion and a rear handle portion. The threaded portion is connected to the valve core shaft, the handle portion is located outside the valve core shaft, the front end face of the filter screen portion is located between the water inlet and the water outlet, and is provided with an extension wing that extends outward to fit close to the inner wall of the valve core shaft.

[0012] In a preferred embodiment, the filter portion has a cylindrical structure.

[0013] In a preferred embodiment: a first sealing ring is fitted between the inlet and outlet of the valve core shaft, the first sealing ring being located between the first and second ports; a second sealing ring is provided between the outlet of the valve core shaft and the position where it is screwed to the three-way body; a third sealing ring is provided between the filter screen portion of the filter core shaft and the position where it is screwed to the valve core shaft; the number of second sealing rings is greater than the number of third sealing rings.

[0014] Compared with the prior art, this technical solution has the following advantages:

[0015] 1. During assembly, the valve spindle is first rotated in the first direction and screwed onto the three-way body. Then, the filter element shaft is rotated in the second direction and screwed onto the valve spindle. Assembly is very convenient and quick. To remove the filter element shaft, simply rotate the valve spindle in the first direction to close the first port. At this time, the angle valve is in the closed state. Then, rotate the filter element shaft in the first direction to remove it. Therefore, during the process of unscrewing the filter element shaft, since the rotation direction of the filter element shaft is the same as the direction in which the valve spindle closes the first port, the angle valve is kept closed, preventing accidental opening. Furthermore, because the friction between the valve spindle and the three-way body is greater than the friction between the filter element shaft and the valve spindle, when reinstalling the filter element shaft, although the filter spindle rotates in the second direction, it cannot drive the valve spindle to rotate in the second direction. The angle valve remains closed. Only after the filter element shaft has rotated to its final position will it drive the valve spindle to rotate in the second direction and open the first port. Therefore, the angle valve of this utility model has the advantage of preventing accidental opening when disassembling the filter element shaft, and can also prevent accidental opening before the filter element shaft is installed.

[0016] 2. The valve spindle consists of a front valve spindle and a rear valve spindle connected together. After the front valve spindle closes the first port, if the rear valve spindle continues to rotate, the rear valve spindle can only rotate relative to the front valve spindle, thereby preventing the front valve spindle from rotating and damaging the sealing structure between it and the first port.

[0017] 3. The number of sealing rings between the rear valve spindle and the tee body is greater than the number of sealing rings between the filter element shaft and the rear valve spindle. This can increase the friction between the valve spindle and the tee body, ensuring that the valve spindle does not rotate during the installation of the filter element shaft. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 A three-dimensional schematic diagram of the angle valve with filtering function of this utility model is shown.

[0020] Figure 2 It is illustrated Figure 1 Another three-dimensional schematic diagram of the angle valve shown.

[0021] Figure 3 It is illustrated Figure 1 The diagram shows the angle valve with the filter element shaft removed.

[0022] Figure 4 It is illustrated Figure 1 The diagram shows an exploded view of the angle valve.

[0023] Figure 5 It is illustrated Figure 1 The diagram shows a cross-sectional view of the angle valve (open state).

[0024] Figure 6 It is illustrated Figure 1 Another cross-sectional view of the angle valve shown (closed state).

[0025] Figure 7 It is illustrated Figure 1 The diagram shows a cross-sectional view of the process of unscrewing the filter element shaft using the angle valve.

[0026] Figure 8 It is illustrated Figure 1 The diagram shows a cross-sectional view after the angle valve has been unscrewed from the filter element shaft.

[0027] Figure 9 It is illustrated Figure 1 The diagram shows the operating status of the angle valve. Detailed Implementation

[0028] Please refer to Figures 1 to 9A filtration angle valve includes a three-way body 10, a valve spindle 20, and a filter element 30. The three-way body 10 has a first port 11 at its front end as an inlet, a second port 12 in its middle as an outlet, and a third port 13 at its rear end coaxially with the first port 11. The valve spindle 20 is inserted into the three-way body 10 and can move axially back and forth relative to the three-way body 10 to control the opening or closing of the first port 11. The valve spindle 20 has an internal cavity, with an open rear end. The filter element 30 is inserted into the cavity of the valve spindle 20 along the open end. The valve spindle 20 has an inlet hole 22 on its front side wall and an outlet hole 24 on its middle side wall. When the valve spindle 20 opens the first port 11, water can enter the internal cavity of the valve spindle 20 through the inlet hole 22, pass through the filter element 30, and then flow out through the outlet hole 24 into the second port 12. The valve spindle 20 is detachably connected to the three-way body 10 via a thread, allowing for simultaneous axial movement. The filter element shaft 30 is detachably connected to the valve spindle 20 via a thread, and the thread direction between the filter element shaft 30 and the valve spindle 20 is opposite to the thread direction between the valve spindle 20 and the three-way body 10. Therefore, the rotation direction of the valve spindle 20 to close the first port is the same as the rotation direction of the filter element shaft 30 to disassemble it. Furthermore, the frictional force between the valve spindle 20 and the three-way body 10 is greater than the frictional force between the filter element shaft 30 and the valve spindle 20. Therefore, when installing the filter element shaft 30, it cannot drive the valve spindle 20 to rotate and open the first port before the filter element shaft 30 is fully installed.

[0029] Preferably, the valve spindle 20 is inserted into the three-way body 10 from back to front through the third port 13. When the valve spindle 20 moves forward, it gradually closes the first port 11; when it moves backward, it gradually opens the first port. Both the valve spindle 20 and the filter element shaft 30 are assembled and disassembled from the same side of the three-way body. Figure 9 As shown, when applied to wall-mounted water tanks, the narrow internal space of the wall-mounted water tank makes it easy to reach into the tank with one hand for disassembly and assembly.

[0030] Preferably, the valve spindle 20 has a two-section structure, including a front valve spindle 26 and a rear valve spindle 28. The front valve spindle 26 and the rear valve spindle 28 are axially engaged but can rotate relative to each other in the circumferential direction. The rear valve spindle 28 is connected to the three-way body 10 by a thread to achieve forward and backward axial movement. The filter element shaft 30 is connected to the rear valve spindle 28 by a thread. The front valve spindle 26 can prevent damage to the sealing and water-stopping structure caused by rotation after the first port 11 is closed.

[0031] Preferably, the front valve spindle 26 is a plastic part, and the rear valve spindle 28 is a metal part.

[0032] Preferably, the three-way body 10 has a flow-blocking step 14 located near the first port 11, and the front end face of the front valve spindle 26 and the flow-blocking step 14 are provided with mutually paired pressing inclined surfaces 262 and 142.

[0033] Preferably, the number of sealing rings between the rear valve spindle 28 and the three-way body 10 is greater than the number of sealing rings between the filter element shaft 30 and the rear valve spindle 28.

[0034] Preferably, the rear end of the rear valve spindle 28 is outside the tee body 10, i.e., not inserted into the tee body 10. It also includes a rotating handle 40, which is fitted onto the rear end of the rear valve spindle 28 and the two are circumferentially engaged. By operating the rotating handle 40, the rear valve spindle 28 is rotated, thereby driving the front valve spindle 26 to move.

[0035] Preferably, the filter element shaft 30 includes a front filter screen portion 32, a middle threaded portion 34, and a rear handle portion 36. The threaded portion 34 is threadedly connected to the valve core shaft 20. The handle portion 36 is located outside the valve core shaft 20, i.e., not inserted into the valve core shaft cavity. The front end face of the filter screen portion 32 is located between the water inlet hole 22 and the water outlet hole 24, and has an extension wing 322 that extends outward to fit close to the inner wall surface of the valve core shaft 20. More preferably, the filter screen portion 32 has a cylindrical structure.

[0036] In this embodiment, the valve core shaft 20 is fitted with a first sealing ring 50 between its inlet hole 22 and outlet hole 24, and the number of the first sealing ring 50 is one. The first sealing ring 50 is located between the first through hole 11 and the second through hole 12. The valve core shaft 20 is provided with a second sealing ring 60 between its outlet hole 24 and the position where it is screwed to the three-way body 10, and the number of the second sealing ring 60 is two. The filter element shaft 30 is provided with a third sealing ring 70 between its filter screen part and the position where it is screwed to the valve core shaft 20, and the number of the third sealing ring 70 is one.

[0037] like Figure 5 and Figure 6 As shown, when the valve spindle 20 rotates in the first direction, the valve spindle 20 moves forward, that is, it installs the valve spindle or closes the first port 11. Figure 7 and Figure 8 As shown, the filter element shaft 30 can be removed when it rotates in the first direction.

[0038] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. An angle valve with a filtering function, comprising a three-way body, a valve core shaft, and a filter element shaft, wherein a first port at the front end of the three-way body is a water inlet, a second port in the middle is a water outlet, and a third port at the rear end is coaxially arranged with the first port at the front end; the valve core shaft is inserted into the three-way body, and the valve core shaft can move axially back and forth relative to the three-way body to control the opening or closing of the first port, characterized in that: The valve core shaft has an internal cavity and an open rear end. The filter element shaft is inserted into the valve core shaft cavity along the open end. The front side wall of the valve core shaft has a water inlet hole, and the middle side wall has a water outlet hole. When the valve core shaft opens the first port, water can enter the internal cavity of the valve core shaft through the water inlet hole. After passing through the filter element shaft, the water flows out through the water outlet hole and into the second port. The valve core shaft is connected to the three-way body by a thread to achieve axial movement. The filter element shaft is detachably connected to the valve core shaft by a thread. The thread direction between the filter element shaft and the valve core shaft is opposite to the thread direction between the valve core shaft and the three-way body. Therefore, the rotation direction of rotating the valve core shaft to close the first port is the same as the rotation direction of rotating to disassemble the filter element shaft. Furthermore, the friction between the valve core shaft and the three-way body is greater than the friction between the filter element shaft and the valve core shaft.

2. The angle valve with filtering function according to claim 1, characterized in that: The valve spindle is inserted into the three-way body from back to front through the third port. When the valve spindle moves forward, it gradually closes the first port, and when it moves backward, it gradually opens the first port.

3. The angle valve with filtering function according to claim 1 or 2, characterized in that: The valve core shaft has a two-section structure, including a front valve core shaft and a rear valve core shaft. The front valve core shaft and the rear valve core shaft are axially connected but can rotate relative to each other in the circumferential direction. The rear valve core shaft is connected to the three-way body by a thread to achieve forward and backward axial movement. The filter element shaft is connected to the rear valve core shaft by a thread.

4. The angle valve with filtering function according to claim 3, characterized in that: The front valve spindle is made of plastic, while the rear valve spindle is made of metal.

5. The angle valve with filtering function according to claim 4, characterized in that: The three-way body has a flow-blocking step located near the first port, and the front end face of the front valve spindle and the flow-blocking step are provided with mutually matching pressing inclined surfaces.

6. The angle valve with filtering function according to claim 3, characterized in that: The number of sealing rings between the rear valve spindle and the three-way body is greater than the number of sealing rings between the filter element shaft and the rear valve spindle.

7. The angle valve with filtering function according to claim 3, characterized in that: The rear end of the rear valve spindle is located outside the three-way body and also includes a rotating handle. The rotating handle is attached to the rear end of the rear valve spindle and the two are engaged circumferentially.

8. The angle valve with filtering function according to claim 1, characterized in that: The filter element shaft includes a front filter screen portion, a middle threaded portion, and a rear handle portion. The threaded portion is connected to the valve core shaft, and the handle portion is located outside the valve core shaft. The front end face of the filter screen portion is located between the water inlet and the water outlet, and it is provided with an extension wing that extends outward to fit close to the inner wall of the valve core shaft.

9. The angle valve with filtering function according to claim 8, characterized in that: The filter section has a cylindrical structure.

10. The angle valve with filtering function according to claim 8, characterized in that: The valve core shaft is fitted with a first sealing ring between its inlet and outlet holes, the first sealing ring being located between the first and second ports. The valve core shaft is provided with a second sealing ring between its outlet hole and the position where it is screwed to the three-way body. The filter shaft is provided with a third sealing ring between its filter screen portion and the position where it is screwed to the valve core shaft. The number of second sealing rings is greater than the number of third sealing rings.

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