Filter three-way valve capable of flexibly switching channels

Abstract

The filter three-way valve comprises a valve body and a flow dividing cavity arranged in the valve body, a water inlet channel extending into the flow dividing cavity is fixedly arranged at the bottom of the valve body, and flow dividing channels extending into the flow dividing cavity are fixedly arranged on the two sides of the top of the valve body. The filter three-way valve is characterized in that a flow dividing cavity is formed in the valve body, a switching valve element assembly used for controlling the fluid direction of the filter is installed in the flow dividing cavity, and a sealing assembly used for sealing the flow dividing cavity is fixedly arranged in the middle of one end of the valve body. According to the three-way valve, manual adjustment is carried out through the adjusting assembly, so that flowing channels of media can be flexibly switched, single-channel conduction can be achieved, double-channel conduction can also be achieved, distribution of the pipeline flow can be adjusted when the double channels are conducted, operation is easy, adjustment is flexible, the functionality of the three-way valve can be improved, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of a three-way valve body of a filter, in particular to a three-way valve of a filter with flexibly switchable channels. Background Art

[0002] The filter is an indispensable device on the pipeline for conveying media. It is usually installed at the inlet end of the pressure reducing valve, pressure relief valve, water level control valve, etc. In order to control the flow direction of the medium after filtration, a three-way valve is usually installed at the outlet of the filter to guide the filtered medium. The common three-way valve currently consists of a valve body, an inlet channel and two drainage channels. The inlet channel and the two drainage channels extend into the valve cavity of the valve body. The above common types of three-way valves for filters have the following shortcomings in actual applications:

[0003] After the medium enters the valve body through the water inlet channel, it will be discharged through two drainage channels at the same time. However, in application, sometimes only one channel is needed to drain the medium. At this time, it is necessary to install stop valves on the two drainage channels separately to control the flow direction of the medium. The three-way valve body does not have the function of switching the fluid flow channel. Utility Model Content

[0004] The utility model aims to provide a filter three-way valve with flexibly switchable channels, so as to solve the problem that the traditional three-way valve mentioned in the background technology does not have the function of switching the flow direction of the fluid.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a three-way valve for a filter with flexibly switchable channels, comprising a valve body and a diverter chamber arranged inside the valve body, a water inlet channel extending to the inside of the diverter chamber is fixedly arranged at the bottom of the valve body, diverter channels extending to the inside of the diverter chamber are fixedly arranged on both sides of the top of the valve body, a switching valve core assembly for controlling the direction of the filter fluid is installed inside the diverter chamber, a closing assembly for closing the diverter chamber is fixedly arranged in the middle of one end of the valve body, a flow control sleeve is fixedly arranged on the periphery of one end of the valve body, a positioning plate is fixedly arranged at one end of the flow control sleeve, an adjusting assembly is installed in the middle of the positioning plate, and a back sealing assembly for sealing the diverter chamber is fixedly installed at the other end of the valve body.

[0006] Preferably, the switching valve core assembly includes two water blocking heads and a valve stem fixedly arranged between the two water blocking heads, a reversing sealing ring is fixedly arranged on the inner sides of the two water blocking heads, and a threaded guide cylinder is fixedly arranged on the outer side of one of the water blocking heads; the water blocking is flexible and easy to control.

[0007] Preferably, a water blocking groove is provided on the inner side of the connection between the two diversion channels and the diversion cavity, and the reversing sealing ring is arranged opposite to the water blocking groove; the water blocking effect is significant.

[0008] Preferably, the adjustment assembly includes a front baffle plate and a limit plate fixedly arranged inside the flow control tube sleeve, a threaded rod is provided in the middle of the front baffle plate, one end of the threaded rod passes through the positioning plate and is fixedly provided with a handwheel, a thrust bearing is installed at the connection between the positioning plate and the threaded rod, the threaded guide tube is slidably arranged on the limit plate, and the threaded rod is threadedly connected to the inside of the threaded guide tube; the adjustment is flexible, and the channel switching is convenient.

[0009] Preferably, the sealing component includes a sealing sleeve and a first packing sealing ring fixedly arranged on the inner side of the sealing sleeve; the sealing performance in the diversion cavity can be improved to prevent leakage and seepage.

[0010] Preferably, the back seal assembly includes a back pressure sleeve, which is fixed on the valve body by screws, and a second packing sealing ring is fixedly provided at the connection between the back pressure sleeve and the valve body; while improving the sealing performance of the back of the valve body, it facilitates the disassembly of the back of the valve body and the maintenance and repair of the internal structure of the valve body.

[0011] Preferably, the bottom end of the water inlet channel and the top ends of the two diversion channels are fixedly mounted with connecting flanges, so that the three-way valve can be conveniently installed on the filter and can be easily disassembled and assembled.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The filter three-way valve is additionally provided with an adjustable switching valve core component in the valve cavity. The manual adjustment is performed through the adjusting component, so that the flow channel of the medium can be flexibly switched, and single-channel conduction or dual-channel conduction can be realized. When the dual channels are connected, the distribution of the pipeline flow rate can also be adjusted. The operation is simple and the adjustment is flexible, so that the functionality of the three-way valve can be improved and the application range is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the three-way valve of the utility model;

[0015] Figure 2 It is a front cross-sectional view of the three-way valve of the utility model;

[0016] Figure 3 This is a structural schematic diagram of the switching valve core assembly of the utility model;

[0017] Figure 4 It is an enlarged view of part A of the utility model.

[0018] In the figure: 1. valve body; 2. flow control sleeve; 3. positioning plate; 4. hand wheel; 5. water blocking groove; 6. water inlet channel; 7. diversion channel; 8. connecting flange; 9. back pressure sleeve; 10. diversion chamber; 11. closing sleeve; 12. first packing seal ring; 13. threaded guide sleeve; 14. limit plate; 15. threaded rod; 16. front baffle; 17. thrust bearing; 18. second packing seal ring; 19. water blocking head; 20. valve stem; 21. reversing seal ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1-4 The utility model provides a filter three-way valve with flexibly switchable channels, including a valve body 1 and a diverter chamber 10 arranged inside the valve body 1, a water inlet channel 6 extending to the inside of the diverter chamber 10 is fixedly arranged at the bottom of the valve body 1, diverter channels 7 extending to the inside of the diverter chamber 10 are fixedly arranged on both sides of the top of the valve body 1, a switching valve core component for controlling the direction of the filter fluid is installed inside the diverter chamber 10, a closing component for closing the diverter chamber 10 is fixedly arranged in the middle of one end of the valve body 1, a flow control sleeve 2 is fixedly arranged on the periphery of one end of the valve body 1, a positioning plate 3 is fixedly arranged at one end of the flow control sleeve 2, an adjusting component is installed in the middle of the positioning plate 3, a back sealing component for sealing the diverter chamber 10 is fixedly installed at the other end of the valve body 1, and a connecting flange 8 is fixedly installed at the bottom end of the water inlet channel 6 and the top ends of the two diverter channels 7;

[0021] When in use, the water inlet channel 6 is connected to the drain port of the filter through the connecting flange 8, and the diversion channel 7 is connected to the diversion pipe through the connecting flange 8. The medium filtered by the filter will flow into the diversion cavity 10 through the water inlet channel 6, and finally flow into the corresponding diversion pipes through the two diversion channels 7.

[0022] See also Figure 2 , Figure 3 and Figure 4 Further, the switching valve core assembly includes two water plugging heads 19 and a valve stem 20 fixedly arranged between the two water plugging heads 19, a reversing seal ring 21 is fixedly arranged on the inner side of the two water plugging heads 19, a threaded guide cylinder 13 is fixedly arranged on the outer side of one of the water plugging heads 19, and a water plugging groove 5 is arranged on the inner side of the connection between the two diversion channels 7 and the diversion cavity 10, and the reversing seal ring 21 is arranged opposite to the water plugging groove 5;

[0023] During use, the staff can control the switching valve core assembly to move left and right inside the diverter chamber 10 through the adjustment assembly. When the switching valve core assembly moves to the leftmost side of the diverter chamber 10, the water blocking head 19 at the rear squeezes the second packing sealing ring 18, thereby blocking the diverter channel 7 on the right. At this time, only the diverter channel 7 on the left can guide the medium. Conversely, when the switching valve core assembly is moved to the rightmost side of the diverter chamber 10, the diverter channel 7 on the left is closed, and only the diverter channel 7 on the right can guide the medium. When the switching valve core assembly is in the middle of the diverter chamber 10, both diverter channels 7 can guide the medium.

[0024] See also Figure 1 and Figure 2 , further, the adjustment component includes a front baffle plate 16 and a limit plate 14 fixedly arranged inside the flow control sleeve 2, a threaded rod 15 is arranged in the middle of the front baffle plate 16, one end of the threaded rod 15 passes through the positioning plate 3 and is fixedly provided with a hand wheel 4, a thrust bearing 17 is installed at the connection between the positioning plate 3 and the threaded rod 15, the threaded guide cylinder 13 is slidably arranged on the limit plate 14, and the threaded rod 15 is threadedly connected to the inside of the threaded guide cylinder 13;

[0025] During use, when it is necessary to switch the diversion channel, the staff can turn the handwheel 4, and the handwheel 4 drives the threaded rod 15 to rotate in situ on the front baffle plate 16. Since the threaded guide cylinder 13 is threadedly connected to the threaded rod 15, while the threaded rod 15 rotates in situ, the threaded guide cylinder 13 will slide left and right on the limit plate 14, and then pull the water blocking head 19 to move left and right in the diversion chamber 10, thereby realizing the switching of the diversion channel. The operation is simple and the control is flexible and easy.

[0026] See also Figure 1 and Figure 2 Further, the closing assembly includes a closing sleeve 11 and a first packing seal ring 12 fixedly arranged inside the closing sleeve 11, and the back sealing assembly includes a back pressure sleeve 9, which is fixedly arranged on the valve body 1 by screws, and a second packing seal ring 18 is fixedly arranged at the connection between the back pressure sleeve 9 and the valve body 1;

[0027] When in use, one end of the diversion chamber 10 is closed by the closing sleeve 11, and sealed by the first packing sealing ring 12 to prevent leakage and seepage. The other end of the diversion chamber 10 is sealed by the back pressure sleeve 9 and the second packing sealing ring 18, which facilitates the disassembly and maintenance of the three-way valve and has a significant sealing effect.

[0028] When the embodiment of the present application is in use: the threaded rod 15 is driven to rotate by the handwheel 4, and then the threaded guide cylinder 13 is driven to move left and right between the limit plate 14 and the front baffle plate 16, so as to control the movement of the switching valve core assembly in the diversion chamber 10, adjust the flow direction of the medium, and block the flow inlet of the diversion channel 7 by the water blocking head 19, so as to flexibly control the flow size of the two channels, with precise control and easy operation.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A three-way filter valve with flexibly switchable channels, comprising a valve body (1) and a flow diversion chamber (10) arranged inside the valve body (1), characterized in that: The bottom of the valve body (1) is fixedly provided with a water inlet channel (6) extending into the diverter chamber (10), and both sides of the top of the valve body (1) are fixedly provided with diverter channels (7) extending into the diverter chamber (10). A switching valve core assembly for controlling the direction of the filter fluid is installed inside the diverter chamber (10), and a closing assembly for closing the diverter chamber (10) is fixedly provided in the middle of one end of the valve body (1). A flow control sleeve (2) is fixedly provided on the periphery of one end of the valve body (1), and a positioning plate (3) is fixedly provided at one end of the flow control sleeve (2), and an adjusting assembly is installed in the middle of the positioning plate (3). A back seal assembly for sealing the diverter chamber (10) is fixedly provided at the other end of the valve body (1).

2. A three-way filter valve with flexibly switchable channels according to claim 1, characterized in that: The switching valve core assembly comprises two water blocking heads (19) and a valve stem (20) fixedly arranged between the two water blocking heads (19), a reversing sealing ring (21) being fixedly arranged on the inner side of the two water blocking heads (19), and a threaded guide cylinder (13) being fixedly arranged on the outer side of one of the water blocking heads (19).

3. A three-way filter valve with flexibly switchable channels according to claim 2, characterized in that: A water blocking groove (5) is provided on the inner side of the connection between the two diversion channels (7) and the diversion chamber (10), and the reversing sealing ring (21) is arranged opposite to the water blocking groove (5).

4. A three-way filter valve with flexibly switchable channels according to claim 2, characterized in that: The adjustment assembly comprises a front baffle plate (16) and a limit plate (14) fixedly arranged inside the flow control sleeve (2); a threaded rod (15) is arranged in the middle of the front baffle plate (16); one end of the threaded rod (15) passes through the positioning plate (3) and is fixedly provided with a hand wheel (4); a thrust bearing (17) is installed at the connection between the positioning plate (3) and the threaded rod (15); the threaded guide sleeve (13) is slidably arranged on the limit plate (14); and the threaded rod (15) is threadedly connected to the inside of the threaded guide sleeve (13).

5. The three-way filter valve with flexibly switchable channels according to claim 1, characterized in that: The sealing assembly comprises a sealing sleeve (11) and a first packing sealing ring (12) fixedly arranged on the inner side of the sealing sleeve (11).

6. A three-way filter valve with flexibly switchable channels according to claim 1, characterized in that: The back seal assembly comprises a back pressure sleeve (9), the back pressure sleeve (9) being fixedly arranged on the valve body (1) by means of screws, and a second packing seal ring (18) being fixedly arranged at the connection between the back pressure sleeve (9) and the valve body (1).

7. The three-way filter valve with flexibly switchable channels according to claim 1, characterized in that: The bottom end of the water inlet channel (6) and the top ends of the two diversion channels (7) are both fixedly mounted with connecting flanges (8).

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