Three-way valve

Abstract

The utility model relates to the technical field of valves, and discloses a three-way valve which comprises a main valve body and a water purification pipe, the water purification pipe is connected to the side wall of the main valve body and communicated with the main valve body, and a filter screen assembly is arranged in the main valve body and extends in the axial direction of the main valve body. Water entering the main valve body can flow into the water purification pipe after being filtered by the filter screen assembly, the filter screen assembly is of a cylindrical structure, and the radial section of the filter screen assembly is gradually shrunk from the two ends to the middle; the communicating position of the water purifying pipe and the main valve body is located in the radial projection area of the filter screen assembly towards the inner wall of the main valve body and further located on the downstream of the minimum position of the radial section of the filter screen assembly. Through the Venturi effect, the flow speed of water flow at the position with the small radial section of the filter screen assembly is increased, accumulation is difficult to form on the filter screen assembly, meanwhile, the water flow with the increased flow speed flushes impurities located on the downstream of the position with the minimum radial section of the filter screen assembly, and the self-cleaning function is achieved on the filter screen assembly through the combined action of the two. And the quality of purified water is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technology field especially relates to a tee valve. BACKGROUND

[0002] Tee valve refers to the valve body has three branch ports, one import, two export one kind of valve device. Water flows into from the import, after the branch of valve body, can respectively from two export flow out. At the same time tee valve installs filter screen subassembly in the valve body, make one export for the normal water export, another water export is the purified water export. The existing filter screen subassembly is straight cylinder type structure, after long -time use of tee valve, the impurity in water is easy to accumulate on filter screen subassembly, easy to cause the filter structure to be blocked, influence the quality of purified water. SUMMARY

[0003] The utility model discloses a tee valve, solved the technical problem of the filter structure of prior art tee valve is blocked, influence the quality of purified water.

[0004] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0005] The utility model provides a tee valve, it includes:

[0006] Main valve body and water purification pipe, the water purification pipe is connected in the lateral wall of main valve body, and with main valve body is linked together, be provided with filter screen subassembly in main valve body, filter screen subassembly is along the axial extension setting of main valve body, the water that enters main valve body can flow into water purification pipe after the filtration of filter screen subassembly, filter screen subassembly is cylinder type structure, the radial section of filter screen subassembly gradually contracts from both ends to the middle;

[0007] The communication of water purification pipe and main valve body is located in the radial projection area of filter screen subassembly to main valve body inner wall, and still is located in the downstream of the minimum place of filter screen subassembly radial section.

[0008] The main valve body of tee valve is provided with filter screen subassembly, filter screen subassembly extends along the axis of main valve body, the water that enters main valve body can flow into water purification pipe after the filtration of filter screen subassembly, realizes the filtration to the water that exports by water purification pipe, filter screen subassembly is cylinder type structure, the radial section of filter screen subassembly gradually contracts from both ends to the middle, the communication of water purification pipe and main valve body is located in the radial projection area of filter screen subassembly to main valve body inner wall, and still is located in the downstream of the minimum place of filter screen subassembly radial section, through the venturi effect, make the water flow velocity of filter screen subassembly smaller place increase, the increase of flow velocity makes the filter screen subassembly on the accumulation difficult to form, and the water flow of flow velocity increase flushes the impurity located in the downstream of filter screen subassembly radial section minimum place, the both combined action further realizes the self-cleaning function of filter screen subassembly, improves the water quality of purified water.

[0009] As a preferred solution of the above-mentioned three-way valve, the filter screen assembly comprises:

[0010] A mounting bracket is mounted in the main valve body.

[0011] A filter screen is supported by the mounting bracket, the filter screen is in a cylindrical structure, and the radial cross section of the filter screen gradually shrinks from both ends to the middle.

[0012] The filter screen assembly supports the filter screen through the mounting bracket, can install the filter screen in the main valve body, the filter screen is in a cylindrical structure, and the radial cross section of the filter screen gradually shrinks from both ends to the middle, which can facilitate self-cleaning of the filter screen assembly by utilizing the Venturi effect.

[0013] As a preferred solution of the above-mentioned three-way valve, the mounting bracket comprises:

[0014] End brackets are arranged at both ends of the filter screen, the end brackets are mounted in the main valve body, and the end brackets are in communication with the inside of the filter screen.

[0015] Support frames are arranged between the two end brackets, the two ends of the support frame are connected with the corresponding end bracket, the support frame is convexly arranged from both ends to the middle direction and close to the filter screen, and the support frame is in close contact with the filter screen.

[0016] The end bracket can fix and install both ends of the filter screen, the two ends of the support frame are connected with the corresponding end bracket to form a stable support structure, the support frame is convexly arranged from both ends to the middle direction and close to the filter screen, and the support frame is in close contact with the filter screen, so that the filter screen is better supported.

[0017] As a preferred solution of the above-mentioned three-way valve, a plurality of support frames are arranged at equal intervals along the circumferential direction of the filter screen.

[0018] The plurality of support frames are arranged at equal intervals along the circumferential direction of the filter screen, the support effect on the filter screen is good, the force transmitted by the filter screen can be uniformly dispersed, and the service life of the filter screen assembly is prolonged.

[0019] As a preferred solution of the above-mentioned three-way valve, a sealing element is arranged between the end bracket and the inner wall of the main valve body.

[0020] The sealing element is arranged between the end bracket and the inner wall of the main valve body to play a sealing role, so that the water entering the main valve body cannot enter the main valve body through the gap between the end bracket and the main valve body, and the water cannot be output through the clean water pipe without being filtered.

[0021] As a preferred embodiment of the aforementioned three-way valve, the end bracket is provided with a groove in the circumference, and the seal is installed in the groove.

[0022] The groove allows for the positioning and installation of the seal, preventing it from moving freely.

[0023] As a preferred embodiment of the aforementioned three-way valve, the radial cross-section of the filter screen has a circular or elliptical shape.

[0024] The radial cross-section of the filter screen has a circular or elliptical shape. This structure is simple, easy to manufacture, and the inner wall is relatively smooth, so it will not impede the flow of impurities entering the filter screen.

[0025] As a preferred embodiment of the aforementioned three-way valve, the radial cross-section of the filter screen has a regular polygonal shape.

[0026] The radial cross-section of the filter screen has a regular polygonal shape, which is simple and easy to manufacture.

[0027] As a preferred embodiment of the above-mentioned three-way valve, the two ends of the main valve body are respectively provided with a first inlet / outlet and a second inlet / outlet, one of the first inlet / outlet and the second inlet / outlet being an inlet and the other being an outlet, and one end of the filter assembly is flush with the end of the main valve body provided with the inlet.

[0028] One end of the filter assembly is flush with the end of the main valve body where the water inlet is located, so that the water entering the main valve body is filtered through the filter assembly from the moment it enters the main valve body, achieving a better filtration effect.

[0029] As a preferred embodiment of the above-mentioned three-way valve, the inner wall of the main valve body at the end where the water outlet is located is provided with a limiting surface, and the end face of the filter assembly abuts against the limiting surface.

[0030] When the filter assembly is installed in the main valve body, it can abut against the limiting surface, and the limiting surface can limit the installation of the filter assembly.

[0031] The beneficial effects of this utility model are:

[0032] The three-way valve proposed in this utility model has a filter screen assembly installed in the main valve body. The filter screen assembly extends axially along the main valve body. Water entering the main valve body is filtered by the filter screen assembly and then flows into the purified water pipe, thus filtering the water output from the purified water pipe. The filter screen assembly has a cylindrical structure, and its radial cross-section gradually narrows from both ends to the middle. The connection between the purified water pipe and the main valve body is located in the radial projection area of ​​the filter screen assembly onto the inner wall of the main valve body, and is also located downstream of the point where the radial cross-section of the filter screen assembly is the smallest. Through the Venturi effect, the water flow velocity at the point where the radial cross-section of the filter screen assembly is smaller increases. The increased flow velocity makes it difficult for impurities to form on the filter screen assembly. At the same time, the increased flow velocity washes away impurities located downstream of the point where the radial cross-section of the filter screen assembly is the smallest. The combined effect of these two factors enables the filter screen assembly to achieve a self-cleaning function, thereby improving the quality of the purified water. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the three-way valve provided by this utility model;

[0034] Figure 2 This is a side view of the three-way valve provided by this utility model;

[0035] Figure 3 yes Figure 2 A sectional view along line AA.

[0036] Figure 4 This is a schematic diagram of the structure of the filter assembly provided by this utility model;

[0037] Figure 5 This is a front view of the filter assembly provided by this utility model;

[0038] Figure 6 yes Figure 5 A cross-sectional view along line BB.

[0039] In the picture:

[0040] 1. Main valve body; 11. Inlet; 12. Outlet; 13. Limiting surface;

[0041] 2. Water purification pipe;

[0042] 3. Filter assembly; 31. Mounting bracket; 311. End bracket; 3111. Groove; 312. Support frame; 32. Filter screen; 33. Seal;

[0043] 4. Control valve. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0045] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0048] like Figures 1-3 As shown, this embodiment provides a three-way valve, including a main valve body 1 and a water purification pipe 2. The main valve body 1 has a first inlet / outlet and a second inlet / outlet at its two ends, respectively. One of the first inlet / outlet and the second inlet / outlet is an inlet 11, and the other is an outlet 12. The water purification pipe 2 is connected to the side wall of the main valve body 1 and communicates with it, forming a T-shaped structure. A control valve 4 is installed on the water purification pipe 2 to control its opening and closing. The water purification pipe 2 and the main valve body 1 are an integral structure. A filter assembly 3 is provided inside the main valve body 1, extending axially along the main valve body 1. Water entering the main valve body 1 through the inlet 11 is filtered by the filter assembly 3 and then flows into the water purification pipe 2.

[0049] In this embodiment, the three-way valve is used in a water purifier, wherein the inlet 11 is connected to the tap water pipe, the outlet 12 is connected to the faucet, and the purified water pipe 2 is connected to the water purifier. In other embodiments, the three-way valve is not limited to water purifiers, but can also be used in other devices with water purification requirements.

[0050] The existing filter assembly has a cylindrical structure. After prolonged use of the three-way valve, impurities in the water can easily accumulate on the filter assembly, causing blockage and affecting the quality of the purified water.

[0051] To address the aforementioned issues, in this embodiment, the filter assembly 3 has a cylindrical structure. The radial cross-section of the filter assembly 3 gradually narrows from both ends towards the middle. The connection point between the purified water pipe 2 and the main valve body 1 is located in the radial projection area of ​​the filter assembly 3 onto the inner wall of the main valve body 1, and is also downstream of the minimum radial cross-section of the filter assembly 3. This allows water entering the main valve body 1 to flow into the purified water pipe 2 after being filtered by the filter assembly 3, leaving the filtered impurities downstream of the minimum radial cross-section of the filter assembly. When water passes through the filter assembly, a Venturi effect occurs, increasing the water flow velocity at the smaller radial cross-section of the filter assembly 3. The water flow velocity at the minimum radial cross-section of the filter assembly 3 reaches its maximum. This increased velocity makes it difficult for impurities to accumulate on the filter assembly 3. If impurities do accumulate, the water, accelerated at the minimum radial cross-section of the filter assembly 3, can effectively flush away the accumulated impurities. The combined effect of these two factors enables the filter assembly 3 to achieve a self-cleaning function, thereby improving the quality of the purified water.

[0052] like Figure 4 and Figure 5 As shown, the filter assembly 3 includes a mounting bracket 31 and a filter screen 32. The mounting bracket 31 is installed inside the main valve body 1. The filter screen 32 is supported by the mounting bracket 31. The filter screen 32 has a cylindrical structure, and its radial cross-section gradually tapers from both ends to the middle. The filter screen 32 has filter holes. The filter assembly 3 supports the filter screen 32 through the mounting bracket 31, enabling the filter screen 32 to be installed inside the main valve body 1. The cylindrical structure of the filter screen 32, with its radial cross-section gradually tapering from both ends to the middle, facilitates self-cleaning of the filter assembly 3 using the Venturi effect.

[0053] Furthermore, the mounting bracket 31 includes end brackets 311 and support frames 312. End brackets 311 are respectively provided at both ends of the filter screen 32. The end brackets 311 are installed inside the main valve body 1 and are connected to the interior of the filter screen 32. In this embodiment, the end brackets 311 have an annular structure. Multiple support frames 312 are provided between the two end brackets 311. The two ends of each support frame 312 are connected to the corresponding end bracket 311. The support frame 312 protrudes from its two ends toward the center towards the filter screen 32 and fits against it. The end brackets 311 can fix and install both ends of the filter screen 32. The two ends of each support frame 312 are connected to the corresponding end bracket 311 to form a stable support structure. The support frame 312 protrudes from its two ends toward the center towards the filter screen 32 and fits against it, thereby achieving a better support effect for the filter screen 32.

[0054] In this embodiment, the support frame 312 is a strip structure. The smaller side of this structure fits into the filter screen 32, which can provide better support and reduce the area that obstructs water flow.

[0055] Preferably, multiple support frames 312 are arranged at equal intervals along the circumferential direction of the filter screen 32, which provides better support for the filter screen 32, can evenly distribute the force transmitted by the filter screen 32, and extend the service life of the filter assembly 3. Figure 6 As shown, in this embodiment, the filter screen 32 is provided with four support frames 312 in the circumferential direction. The four support frames 312 are arranged at equal intervals. In other embodiments, the number of support frames 312 is not limited to four, but can also be two, three, five or more, which is not specifically limited here.

[0056] like Figure 3 As shown, a sealing element 33 is provided between the end bracket 311 and the inner wall of the main valve body 1. The sealing element 33 plays a sealing role to prevent water entering the main valve body 1 from entering the main valve body 1 through the gap between the end bracket 311 and the main valve body 1, and to prevent water from being output from the water purification pipe 2 without being filtered.

[0057] Furthermore, the end bracket 311 has a circumferential groove 3111, and the seal 33 is installed in the groove 3111. The groove 3111 allows the seal 33 to be positioned and installed, preventing it from moving freely. In this embodiment, the seal 33 is a sealing ring, which can seal the entire circumference of the main valve body 1 and the end bracket 311.

[0058] In this embodiment, the radial cross-sectional shape of the filter screen 32 is circular. This structure is simple, easy to manufacture, and has a smooth inner wall, which will not impede the flow of impurities entering the filter screen 32. The radial cross-sectional shape of the filter screen 32 can also be elliptical.

[0059] In other embodiments, the radial cross-section of the filter 32 has a regular polygonal shape, which is simple and easy to manufacture. The radial cross-section of the filter 32 can be an equilateral triangle, a square, a regular pentagon, a regular hexagon, etc.

[0060] like Figure 3 As shown, one end of the filter assembly 3 is flush with the end of the main valve body 1 where the inlet 11 is located, so that the water entering the main valve body 1 is filtered through the filter assembly 3 from the moment it enters the main valve body 1, achieving a better filtration effect. The inner wall of the end of the main valve body 1 where the outlet 12 is located is provided with a limiting surface 13. The end face of the filter assembly 3 abuts against the limiting surface 13, and the limiting surface 13 can limit the installation of the filter assembly 3.

[0061] In this embodiment, the limiting surface 13 is an inclined surface. The inclined surface gradually tilts towards the axis of the main valve body 1 from the end of the main valve body 1 where the inlet 11 is provided to the end where the outlet 12 is provided. The end of the filter screen assembly 3 near the outlet 12 abuts against the inclined surface.

[0062] In other embodiments, the limiting surface 13 can also be set perpendicular to the main valve body 1, which can also play a role in limiting the installation of the filter assembly 3.

[0063] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A three-way valve, characterized in that, include: The main valve body (1) and the water purification pipe (2) are connected to the side wall of the main valve body (1) and communicate with the main valve body (1). A filter screen assembly (3) is provided inside the main valve body (1). The filter screen assembly (3) extends along the axial direction of the main valve body (1). Water entering the main valve body (1) can flow into the water purification pipe (2) after being filtered by the filter screen assembly (3). The filter screen assembly (3) has a cylindrical structure and the radial cross section of the filter screen assembly (3) gradually shrinks from both ends to the middle. The connection point between the water purification pipe (2) and the main valve body (1) is located in the radial projection area of ​​the filter assembly (3) onto the inner wall of the main valve body (1), and is also located downstream of the point where the radial cross-section of the filter assembly (3) is smallest.

2. The three-way valve according to claim 1, characterized in that, The filter assembly (3) includes: Mounting bracket (31) is installed inside the main valve body (1); The filter screen (32) is supported on the mounting bracket (31). The filter screen (32) has a cylindrical structure and its radial cross section gradually tapers from both ends to the middle.

3. The three-way valve according to claim 2, characterized in that, The mounting bracket (31) includes: End brackets (311) are provided at both ends of the filter screen (32). The end brackets (311) are installed inside the main valve body (1) and are connected to the interior of the filter screen (32). Support frame (312), multiple support frames (312) are provided between the two end supports (311), the two ends of the support frame (312) are respectively connected to the corresponding end supports (311), the support frame (312) protrudes from its two ends toward the middle and toward the filter screen (32) and fits against the filter screen (32).

4. The three-way valve according to claim 3, characterized in that, Multiple support frames (312) are arranged at equal intervals along the circumferential direction of the filter screen (32).

5. The three-way valve according to claim 3, characterized in that, A sealing element (33) is provided between the end bracket (311) and the inner wall of the main valve body (1).

6. The three-way valve according to claim 5, characterized in that, The end bracket (311) is provided with a groove (3111) in the circumference, and the seal (33) is installed in the groove (3111).

7. The three-way valve according to claim 2, characterized in that, The radial cross-section of the filter (32) has a circular or elliptical shape.

8. The three-way valve according to claim 2, characterized in that, The radial cross-section of the filter (32) has a regular polygonal shape.

9. The three-way valve according to any one of claims 1-8, characterized in that, The main valve body (1) is provided with a first inlet / outlet and a second inlet / outlet at its two ends respectively. One of the first inlet / outlet and the second inlet / outlet is an inlet (11) and the other is an outlet (12). One end of the filter assembly (3) is flush with the end of the main valve body (1) where the inlet (11) is provided.

10. The three-way valve according to claim 9, characterized in that, The inner wall of the main valve body (1) at the end where the water outlet (12) is located is provided with a limiting surface (13), and the end face of the filter assembly (3) abuts against the limiting surface (13).

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