Filter and assembled cock type self-cleaning filter valve

Abstract

The invention discloses a filter and an assembled cock type self-cleaning filter valve, and belongs to the technical field of electromechanical engineering valves. The filter comprises a filter channel and a cleaning bin; a filtering unit is arranged in the filtering channel, the filtering unit comprises a filtering clamping ring, a filtering net piece and spherical filler, a one-way outlet and a one-way inlet are formed in the top and the bottom of the filtering clamping ring respectively, and a liquid discharging opening and a liquid returning opening are formed in the top and the bottom of the filtering channel respectively; the interior of the cleaning bin is divided into a cleaning cavity and a pollution discharge cavity which are distributed up and down through a filtering pore plate, the cleaning cavity is communicated with a leading-in pipe and a leading-out pipe, a cleaning component is arranged in the cleaning cavity, and a pollution discharge opening is formed in the pollution discharge cavity. The assembled cock type self-cleaning filter valve comprises a cock type valve and a filter. The filter has a self-cleaning function, so that the spherical filler can be self-cleaned, the filter effect cannot become poor and even the valve cannot be blocked even if the filter runs for a long time, the sewage draining exit can be opened to discharge impurities after the filter runs for a certain time, and the maintenance cost is low.

Description

Technical Field

[0001] This invention relates to the field of valve technology in electromechanical engineering, and in particular to a filter and an assembled plug-type self-cleaning filter valve. Background Technology

[0002] With the continuous development of my country's economy and the rapid advancement of science and technology, the requirements for the quality of construction and operation and maintenance management of building electromechanical systems are constantly increasing. Among these requirements, the design and function of filter valves are crucial for ensuring the cleanliness and operational efficiency of fluid systems. Traditional filter valves, after prolonged operation, accumulate impurities in the filtration section, leading to decreased filtration efficiency and, in severe cases, blockage. This reduces fluid throughput, undoubtedly increasing maintenance costs, causing production interruptions, and hindering the energy conservation and environmental protection of electromechanical systems. Therefore, designing a self-cleaning filter valve that maintains high-efficiency filtration performance, ensures filtration effectiveness, reduces energy waste, and lowers labor costs has become an urgent need in the industry. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned technical problems and provide a filter and an assembled plug-type self-cleaning filter valve. The filter can be installed on the valve to make it a filter valve. Because the filter has a self-cleaning function, it can self-clean the spherical packing used to adsorb impurities. Therefore, even if it runs for a long time, it will not cause the filtration effect to deteriorate or even block the valve, resulting in a reduction in fluid flow. After running for a certain period of time, the drain port can be opened to discharge impurities, avoiding the accumulation of impurities in the cleaning chamber. The maintenance method is simple and the maintenance cost is low.

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention discloses a filter, including a filter channel and a cleaning chamber; The filter channel is horizontally arranged and contains a filter unit. The filter unit includes a filter ring, a filter screen, and spherical packing material made of adsorbent material. The filter ring is coaxially arranged within the filter channel. The filter screen is disposed on two openings of the filter ring. The spherical packing material fills the space between the filter screens on the two openings of the filter ring. The top and bottom of the filter ring are respectively provided with a one-way outlet and a one-way inlet. Both the one-way outlet and the one-way inlet allow only the spherical packing material to pass through in one direction. The top and bottom of the filter channel are respectively provided with a drain outlet and a return outlet. The drain outlet is connected to the one-way outlet, and the return outlet is connected to the one-way inlet. The cleaning chamber is equipped with a filter plate, which divides the cleaning chamber into a cleaning chamber and a drain chamber distributed vertically. The cleaning chamber is connected to an inlet pipe and an outlet pipe. The inlet pipe is connected to the drain port, and the outlet pipe is connected to the return port. The cleaning chamber is equipped with a cleaning component that can clean the spherical packing material that flows with the fluid. The drain chamber is equipped with a drain port.

[0005] Preferably, the filter channel is provided with multiple filter units along the axial direction, the unidirectional outlets of the multiple filter units are connected to the inlet pipe through a collecting pipe, and the outlet pipe is connected to the unidirectional inlet of the multiple filter units through a diverting pipe.

[0006] Preferably, both the unidirectional outlet and the unidirectional inlet are reversible loops.

[0007] Preferably, the mesh of the filter screen is a square mesh.

[0008] Preferably, the cleaning component includes a volute flow channel disposed within the cleaning chamber, the volute flow channel being horizontally disposed on the filter plate, the sidewall of the volute flow channel being densely covered with protrusions, the inlet pipe communicating with the outermost flow channel of the volute flow channel, and the outlet pipe communicating with the innermost flow channel of the volute flow channel.

[0009] Preferably, the filter plate has strip-shaped holes.

[0010] Preferably, the drain outlet is detachably connected with a sealing cap.

[0011] The present invention also discloses an assembled plug-type self-cleaning filter valve, comprising a plug valve and the above-mentioned filter, wherein the inlet end of the plug valve is connected to the liquid inlet end of the filter channel.

[0012] Preferably, the plug valve is a three-way valve, the inlet port of the three-way valve is connected to the liquid inlet of the filter channel, and the left straight port and right straight port of the three-way valve are used to connect the left pipeline and the right pipeline, respectively.

[0013] Preferably, the three-way valve includes a valve body, a valve cover, and a valve core; the top of the valve body is provided with a control port, and the side walls of the valve body are respectively provided with an inlet port, a left straight-through port, and a right straight-through port; the valve core includes a plug element, a plug bushing, and a plug limiter, the plug limiter including a limit ring and a support spring, the limit ring being installed on the bottom wall inside the valve body, the support spring being located inside the limit ring, the plug bushing being installed above the limit ring, the plug bushing having three bushing openings, the three bushing openings corresponding to the inlet port, the left straight-through port, and the right straight-through port of the valve body respectively, and the plug element including a plug knob and a plug pin connected sequentially from top to bottom. The valve comprises a plunger, a stopcock cylinder, and a bottom disc. The bottom disc is fitted inside the limiting ring and rests on the support spring. The stopcock cylinder is fitted inside the stopcock bushing and has three stopcock openings. The three stopcock openings correspond to the three bushing openings on their rotation path. The plunger is rotatably connected to the valve cover, which is fixed to the top of the valve body by bolts. The stopcock cylinder is located outside the valve cover. A pressure cap and a sealing ring are fitted on the plunger between the valve cover and the control port. The pressure cap is used to press the sealing ring onto the stopcock bushing, and the sealing ring seals the control port.

[0014] The present invention achieves the following technical effects compared to the prior art: The filter of this invention can be installed on a valve to function as a filter valve, or it can be directly installed on a pipeline for use as a filter. When fluid enters through the filtration channel and passes through the filtration unit, impurities in the fluid are adsorbed by the spherical packing material in the filtration unit, completing the filtration of the fluid. The spherical packing material rotates under the pressure of the fluid medium and is transported to the cleaning chamber of the cleaning compartment, where it is cleaned by the cleaning components. This causes the medium adsorbed on the spherical packing material to fall below the filter plate and enter the drain chamber. The self-cleaning spherical packing material then flows back to the filtration unit for the next cycle, ensuring that the spherical packing material always has a good filtration and adsorption effect. After a certain period of time, the water supply can be temporarily stopped, and the drain port can be opened to discharge impurities, thus achieving a self-cleaning function. This avoids the problems of poor filtration effect, valve blockage, and reduced flow rate caused by long-term operation. Moreover, the draining method is simple and requires no high-cost maintenance.

[0015] Other technical solutions of the present invention have achieved the following technical effects compared with the prior art: 1. The filter valve of the present invention includes a valve and the above-mentioned filter, making the filter valve a filter valve with self-cleaning function. During operation, it can ensure that the spherical packing has a good filtration and adsorption effect at all times, and will not cause impurities to accumulate at the filter unit. Therefore, it will not cause valve blockage or reduced fluid flow. At the same time, after a certain period of operation, impurities can be discharged by opening the drain port, which can prevent impurities from accumulating in the cleaning chamber and affecting the cleaning effect. The maintenance method is simple and the maintenance cost is low.

[0016] 2. In the filter valve of this invention, the valve adopts a plug-type three-way valve, which can switch between different states: Under normal circumstances, the left straight port, the right straight port, and the inlet port are all open, which is the inlet state. Water flows in through the left and right straight ports and flows into the filter channel for filtration. Cleaning is completed under the action of the cleaning chamber. When it is necessary to discharge impurities, the inlet port can be closed and the left and right straight ports can be opened, switching to the ready-to-connect state. At this time, no water will be discharged from the inlet port, so the drain port can be opened for sewage discharge to complete the discharge of impurities. When it is necessary to thoroughly clean the filter valve, it is necessary to first switch to the left straight port state (or the right straight port state), then switch to the ready-to-connect state, open the drain port for sewage discharge, then switch to the right straight port state (left straight port state), and finally switch back to the ready-to-connect state to discharge sewage through the drain port to complete the discharge of impurities. Because one of the two straight pipes (left straight port and right straight port) is closed, the pipe medium will directly flush the device, which is equivalent to pressurizing flushing and ensuring the flushing effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained by analyzing these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the assembled rotary plug self-cleaning filter valve in an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the assembled rotary plug self-cleaning filter valve in an embodiment of the present invention; Figure 3 This is a partial cross-sectional view of the three-way valve in an embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the plug component in an embodiment of the present invention; Figure 5 This is a cross-sectional view of the filter channel in an embodiment of the present invention; Figure 6This is a schematic diagram of the connection structure of multiple filter units, collecting pipes and distributing pipes in an embodiment of the present invention; Figure 7 This is a partial cross-sectional view of a single filter unit in an embodiment of the present invention; Figure 8 This is a partial cross-sectional view of the cleaning chamber in an embodiment of the present invention; Figure 9 This is a perspective view of the assembled plug-type self-cleaning filter valve in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Plug valve; 2. Filter channel; 3. Cleaning chamber; 101. Valve body; 102. Valve cover; 103. Plug stop; 104. Plug bushing; 105. Bushing opening; 106. Sealing ring; 107. Gland; 108. Bolt; 109. Inlet port; 110. Left straight-through port; 111. Right straight-through port; 112. Plug knob; 113. Plug rod; 114. Plug cylinder; 115. Bottom disc; 116. Plug opening; 117. Limiting ring; 118. Support spring; 201. Filter retainer ring; 202. Filter mesh; 203. Spherical packing; 204. One-way outlet; 205. One-way inlet; 206. Manifold; 207. Diverter pipe; 301. Filter plate; 302. Inlet pipe; 303. Outlet pipe; 304. Spiral flow channel; 305. Drain outlet; 306. Sealing cap. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments analyzed and obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] The purpose of this invention is to provide a filter and an assembled plug-type self-cleaning filter valve to solve the problems existing in the prior art. The filter can be installed on the valve to make it a filter valve. Because the filter has a self-cleaning function, it can self-clean the spherical packing used to adsorb impurities. Therefore, even if it runs for a long time, it will not cause the filtration effect to deteriorate or even block the valve, resulting in a reduction in fluid flow. After running for a certain period of time, the drain port can be opened to discharge impurities, avoiding the accumulation of impurities in the cleaning chamber. The maintenance method is simple and the maintenance cost is low.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1 like Figures 1 to 9 As shown, this embodiment provides a filter for installation on a valve. The valve equipped with the filter can be used as a filter valve, and the filter valve has a self-cleaning function. Furthermore, the filter can also be installed directly inside a pipeline for standalone use. Specifically, the filter includes a filter channel 2 and a cleaning chamber 3.

[0024] The filter channel 2 is horizontally positioned and contains a filter unit, which includes a filter ring 201, a filter screen 202, and spherical packing material 203. The filter ring 201 is coaxially positioned within the filter channel 2, and the filter screen 202 is located on two openings of the filter ring 201. The spherical packing material 203 fills the space between the filter screen 202 on the two openings of the filter ring 201. The filter screen 202 primarily allows fluid to pass through, but the spherical packing material 203 does not pass through with the fluid. The spherical packing material 203 is made of an absorbent material. The top of the filter ring 201 has a one-way outlet 204, and the bottom of the filter ring 201 has a one-way inlet 205. Both the one-way outlet 204 and the one-way inlet 205 only allow the spherical packing material 203 to pass through in one direction, thus restricting the flow direction of the spherical packing material 203 and ensuring that it can only flow in a top-out, bottom-in manner. The top of the filter channel 2 is provided with a drain port, which is connected to the one-way outlet 204. The bottom of the filter channel 2 is provided with a return port, which is connected to the one-way inlet 205.

[0025] The cleaning chamber 3 is equipped with a filter plate 301, which divides the cleaning chamber 3 into an upper and lower cleaning chamber and a drain chamber. The cleaning chamber is located at the top, and the drain chamber is located at the bottom. An inlet pipe 302 and an outlet pipe 303 are connected to the cleaning chamber. The inlet pipe 302 is connected to the drain port, and the outlet pipe 303 is connected to the return port. A cleaning component is installed inside the cleaning chamber, which can clean the spherical packing material 203 flowing with the fluid, causing impurities adsorbed on the spherical packing material 203 to fall off. The drain chamber is equipped with a drain port 305. The main function of the filter plate 301 is to allow fluid and impurities to pass through; the spherical packing material 203 cannot pass through the filter plate 301.

[0026] Working principle: Install the filter on the valve, and then install the valve on the pipeline. Specifically, connect the outlet end of filter channel 2 to the outlet pipe of the pipeline, and connect the valve to the supply pipe of the pipeline. Alternatively, connect the filter directly to the pipeline, with the inlet and outlet ends of filter channel 2 connected to the supply and outlet pipes of the pipeline, respectively.

[0027] When the fluid in the supply pipe enters through the inlet end of the filter channel 2, it passes through the filter unit. As the fluid passes through the filter unit, the filter unit starts to work. The medium flows through the filter screen 202 fixed by the filter retainer 201. The mesh of the filter screen 202 disturbs the flow state of the medium. The spherical packing 203 moves and is distributed in the space of the filter screen 202 due to the buoyancy of the fluid medium. At the same time, the spherical packing 203 starts to rotate due to the disturbance of the medium. The fluid medium and the spherical packing 203 make full contact and enter the outlet pipe through the outlet end of the filter channel 2. Thus, the adsorption of impurities is completed. During the process of full contact between the fluid medium and the spherical packing 203, impurities in the fluid medium are adsorbed by the spherical packing 203. The spherical packing 203, under the influence of gravity, falls to the one-way inlet 205 at the lower end of the filter unit. However, the spherical packing 203 cannot pass through and obstructs the flow of the medium. Affected by the fluid medium pressure, the fluid medium enters the collecting pipe 206 through the one-way outlet 204 at the upper end of the filter unit, and then enters the cleaning chamber through the inlet pipe 302 of the cleaning chamber 3. Under the pressure of the fluid medium, the spherical packing 203 will be transported by the fluid's gravity flow, discharged from the one-way outlet 204 of the filter retainer 201 into the inlet pipe 302, and then introduced into the cleaning chamber of the cleaning chamber 3, and then... As the outlet pipe 303 moves, the cleaning component cleans the spherical packing 203 as it flows with the fluid, causing the adsorbed medium to fall below the filter plate 301 and enter the drain chamber. The self-cleaned spherical packing 203 is then discharged through the outlet pipe 303 and flows back to the filter channel 2 via the return port. It then circulates again between the filter screens 202 at the two ring openings of the filter ring 201 in the filter unit, ensuring the spherical packing 203 maintains effective filtration and adsorption. After a certain period, the drain port 305 can be opened to discharge the adsorbed impurities. This filter, when installed on a valve, can be used as a filter valve. Because of its self-cleaning function, it avoids problems such as decreased filtration efficiency or valve blockage due to prolonged operation, which could lead to reduced flow. Furthermore, the draining method is simple and requires no high-cost maintenance.

[0028] In one embodiment, a plurality of filter units are arranged at intervals along the axial direction within the filter channel 2. The unidirectional outlets 204 of the filter units are connected to the inlet pipe 302 via a collecting pipe 206, and the outlet pipe 303 is connected to the unidirectional inlet 205 of the filter units via a diverting pipe 207. The number of filter units can be set as needed, such as four filter units, which are spaced apart along the axial direction of the filter channel 2.

[0029] In one embodiment, the manifold 206 is located at the upper end of the filter channel 2, and the branch pipe 207 is located at the lower end of the filter channel 2. Both the manifold 206 and the branch pipe 207 are forked structures formed by hollow circular tubes, including a main pipe and branch pipes. The number of branch pipes (fork teeth) is the same as the number of filter units, and they are connected to each filter unit one by one. The main function of the manifold 206 is to collect and flow the spherical packing material 203 into the cleaning chamber 3. The main function of the branch pipe 207 is to flow the spherical packing material 203 conveyed by the cleaning chamber 3 and distribute it into each filter unit.

[0030] In one embodiment, each filter unit includes a filter retainer 201 and two filter meshes 202, with the two filter meshes 202 respectively disposed on the two openings of the filter retainer 201.

[0031] In one embodiment, each of the two openings of the filter retainer 201 is provided with an annular groove. The edge of the filter mesh 202 is provided with an annular protrusion, which engages with the annular groove to complete the assembly of the filter mesh 202 and the filter retainer 201.

[0032] In one embodiment, both the one-way outlet 204 and the one-way inlet 205 are check rings. The check ring includes a conical ring section and a circular ring section, with the conical ring section made of an elastic material. The circular ring section of the one-way outlet 204 is embedded in the filter retainer 201, the large-diameter port of the conical ring section of the one-way outlet 204 is connected to the circular ring section, and the small-diameter port of the conical ring section of the one-way outlet 204 extends out of the filter retainer 201. Under the pressure of the fluid medium, the spherical packing 203 floats up and moves with the fluid, then enters the circular ring section of the one-way outlet 204, and then enters the conical ring section, widening the port of the conical ring section for discharge. When backflow is desired, because the port diameter of the conical ring section is smaller than the diameter of the spherical packing 203, the spherical packing 203 cannot flow into the conical ring section. The annular segment of the unidirectional inlet 205 is embedded within the filter retainer 201. The small-diameter port of the conical annular segment of the unidirectional inlet 205 connects to the annular segment, while the large-diameter port of the conical annular segment extends out of the filter retainer 201. When the spherical packing 203 refluxes, it first enters the large-diameter port of the conical annular segment of the unidirectional inlet 205, then pushes open the small-diameter port of the conical annular segment, enters the annular segment, and flows back between the filter screens 202 at the two annular openings of the filter retainer 201.

[0033] In one embodiment, the filter screen 202 has a square mesh. Of course, a circular mesh or other shapes can also be used, as long as the fluid can pass through smoothly without the spherical packing 203 passing through. However, a square mesh is preferred because a circular mesh would require a maximum diameter smaller than the diameter of the spherical packing 203 to prevent it from escaping, making it prone to clogging and resulting in poor flow. With a square mesh, the design only requires the diameter of the inscribed circle of each individual square mesh to be smaller than the diameter of the spherical packing 203, thus ensuring a larger flow capacity per mesh. That is, when the diameter of the inscribed circle of the square mesh equals the diameter of the circular mesh, the area of ​​the square mesh is larger than that of the circular mesh. Therefore, it has a larger flow area while preventing the spherical packing 203 from detaching from the mesh.

[0034] In one embodiment, the spherical filler 203 may be spherical activated carbon, spherical petroleum asphalt, spherical phenolic resin, spherical activated carbon fiber, or spherical asphalt-based activated carbon fiber, etc.

[0035] In one embodiment, the cleaning component includes a volute flow channel 304 disposed within the cleaning chamber. The volute flow channel 304 is horizontally positioned on the filter plate 301. The sidewalls of the volute flow channel 304 are densely covered with protrusions. An inlet pipe 302 communicates with the outermost flow channel of the volute flow channel 304, and an outlet pipe 303 communicates with the innermost flow channel of the volute flow channel 304. Preferably, the outlet pipe 303 is located at the end (or center) of the volute flow channel 304. After the spherical packing 203 is introduced into the volute flow channel 304 through the inlet pipe 302, under the pressure of the medium, the spherical packing 203 moves from the outermost flow channel of the volute flow channel 304 to the innermost flow channel. During this movement, impurities adsorbed on the spherical packing 203 are peeled off by the protrusions on the sidewalls of the volute flow channel 304, and the spherical packing 203 is discharged through the outlet pipe 303. The peeled impurities then pass through the filter plate 301 and fall into the drain chamber. The spiral flow channel 304 can extend the movement path and achieve spiral-progressive stripping of impurities.

[0036] In one embodiment, the volute flow channel 304 is composed of a volute-shaped thin plate with densely packed protrusions on the inner wall of the plate.

[0037] In one embodiment, the filter plate 301 has strip-shaped holes. Specifically, the filter plate 301 is a circular plate with strip-shaped gaps, mainly used to prevent the spherical packing 203 from entering the drain chamber, while allowing detached impurities to pass through the filter plate 301 and collect in the drain chamber. The filter holes of the filter plate 301 can also adopt other shapes, such as a mesh filter plate with mesh-shaped filter holes. However, the strip-shaped holes are more effective at settling impurities than the mesh-shaped holes. This is because the volute flow channel 304 itself occupies part of the impurity settling area, which is the projected area of ​​impurity settling when viewed from above. The contact surface between the strip-shaped gaps of the strip-shaped plate and the volute flow channel 304 is larger, so the impurity settling effect of the mesh filter plate is weaker than that of the strip-shaped plate. At the same time, since impurities are mostly granular or flaky structures, the mesh filter plate is more prone to clogging than the strip-shaped plate.

[0038] In one embodiment, a sealing cap 306 is detachably connected to the drain outlet 305. The drain outlet 305 is a hollow circular tube, primarily used to drain impurities collected in the drain chamber. The sealing cap 306 primarily functions to block the drain outlet 305, preventing it from discharging wastewater at any time. The drain outlet 305 can only operate after the sealing cap 306 is removed. Preferably, the sealing cap 306 can be threaded onto the drain outlet 305 to achieve a detachable connection. Alternatively, a sealing cap 306 with a buckle can also be used to achieve a detachable connection with the drain outlet 305.

[0039] Example 2 like Figures 1 to 9 As shown, this embodiment provides an assembled plug-in type self-cleaning filter valve, including a plug-in valve 1 and the filter in Embodiment 1. The inlet end of the plug-in valve 1 is connected to the liquid inlet end of the filter channel 2. After the plug-in valve 1 is fitted with the filter, it forms a self-cleaning filter valve.

[0040] In one embodiment, the plug valve 1 is a three-way valve. The inlet port 109 of the three-way valve is connected to the liquid inlet of the filter channel 2. The left straight port 110 and the right straight port 111 of the three-way valve are used to connect the left pipeline and the right pipeline, respectively. The three-way valve has three channels, and the design of three-channel rotation adjustment of the flow direction is particularly suitable for frequent operation. It has low fluid resistance, reduces energy consumption, and is stable in operation with low noise. The flow structure is simple and clear with a small size, saving installation space and making component maintenance more convenient. The filtration of the medium and self-cleaning are carried out simultaneously, reducing wear and corrosion of downstream equipment and pipelines, reducing manual cleaning steps and improving system operating efficiency. The plug-type self-cleaning filter valve has significant advantages such as rapid opening and closing, low fluid resistance, simple structure, good sealing performance, flexible installation, good stability, automatic cleaning, improved medium purity, and extended equipment life. It can be widely used in a variety of applications.

[0041] In one embodiment, the three-way valve includes a valve body 101, a valve cover 102, and a valve core. The top of the valve body 101 has a control port, and the side walls of the valve body 101 have an inlet port 109, a left straight-through port 110, and a right straight-through port 111, respectively. The valve core includes a plug element, a plug limiter 103, and a plug bushing 104. The plug limiter 103 includes a limit ring 117 and a support spring 118. The limit ring 117 is installed on the bottom wall inside the valve body 101, and the support spring 118 is located inside the limit ring 117. The plug bushing 104 is fixedly installed above the limit ring 117, and the plug bushing 104 has three bushing openings 105, which correspond to the inlet port 109, the left straight-through port 110, and the right straight-through port 111 of the valve body 101, respectively. The plug assembly includes, from top to bottom, a plug knob 112, a plug plunger 113, a plug cylinder 114, and a bottom disc 115. The bottom disc 115 is fitted inside a limiting ring 117 and rests on a support spring 118. The plug cylinder 114 is fitted inside a plug bushing 104. The plug bushing 104's main function is to ensure a seal between the plug cylinder 114 and the valve body 101, while reducing friction and extending service life. The plug cylinder 114 has three plug openings 116, which correspond to three bushing openings 105 along their rotation path, thus corresponding to the inlet port 109, the left straight-through port 110, and the right straight-through port 111. Rotating the plug cylinder 114 controls the flow direction and opening / closing of the flow channel. The plug plunger 113 is rotatably connected to the valve cover 102, which is fixed to the top of the valve body 101 by bolts 108. The stopcock knob 112 is located outside the valve cover 102. A pressure cap 107 and a sealing ring 106 are provided between the valve cover 102 and the control port of the valve body 101. The pressure cap 107 and the sealing ring 106 are fitted onto the stopcock cylinder 113. The pressure cap 107 presses the sealing ring 106 onto the stopcock cylinder 114, and the sealing ring 106 seals the control port. The limiting ring 117 can radially limit the stopcock component, and the force of the support spring 118 ensures that the stopcock cylinder 114 and the sealing ring 106 are in tight contact. The top of the stopcock bushing 104 is in contact with the sealing ring 106. The main function of the three-way valve is to quickly adjust the medium flow state. The three channels correspond to four usage modes according to the opening and closing state: right straight-through, left straight-through, merging, and waiting to be connected.

[0042] In one embodiment, the stopcock 112 is treated with an anti-slip feature, for example, by being made into a pentagonal prism.

[0043] In one embodiment, the bottom of the plug bushing 104 is provided with an embedded ring, and the side wall of the valve body 101 is provided with an embedded ring groove for the embedded ring to be embedded, thereby fixing the plug bushing 104 and the valve body 101.

[0044] In one embodiment, both the bushing opening 105 and the plug opening 116 are flat oval channels. The three bushing openings 105 are arranged in a T-shape. The corresponding three plug openings 116 are also arranged in a T-shape. The corresponding inlet port 109, left straight port 110, and right straight port 111 are also arranged in a T-shape. The inlet port 109, left straight port 110, and right straight port 111 are hollow cylinders with one end flat and the other end round, smoothly transitioning from flat to round. The flat end corresponds to the bushing opening 105. The round ends of the inlet port 109, left straight port 110, and right straight port 111 are equipped with flanges or threads for connection to external pipelines.

[0045] In one embodiment, the valve cover 102 is a rounded rectangular plate, with four bolt holes at each of its four corners. The lower part of the stopcock valve body 101 is a hollow cup shape, and the upper part is a rounded rectangular plate, with four bolt holes at each of the four corners of the upper part. The four bolt holes of the valve cover 102 and the four bolt holes of the stopcock valve body 101 are fixed together by bolts 108 and nuts.

[0046] In one embodiment, bolt 108 is a hexagonal head bolt.

[0047] In one embodiment, the working process of the assembled plug-type self-cleaning filter valve (three-way valve) is as follows: Steps 1 to 2 are adjustments before use, steps 3 to 7 are the working process, and step 8 is the cleaning process.

[0048] Step 1: Observe the status of the three-way valve. The status includes four usage modes: right straight-through, left straight-through, convergence, and waiting to be connected.

[0049] Inflow status: The three valve openings 116 and the three bushing openings 105 correspond to each other, and also correspond to the inflow port 109, the left straight port 110 and the right straight port 111. After water enters through the left straight port 110 and the right straight port 111, water will exit through the inflow port 109.

[0050] Left Straight-through State: Rotate the stopcock 90° clockwise. The middle stopcock opening 116 aligns with the left straight-through port 110, opening the left straight-through port 110. The right stopcock opening 116 aligns with the inlet port 109, opening the inlet port 109. The left stopcock opening 116 aligns with the side wall of the valve body 101 (opposite to the inlet port 109), and the right straight-through port 111 aligns with the side wall of the stopcock cylinder 114, closing the right straight-through port 111. At this time, water will only enter through the left straight-through port 110 and exit through the inlet port 109.

[0051] Ready to connect: Rotate the stopcock 180° clockwise. The middle stopcock opening 116 corresponds to the side wall of the valve body 101, the right stopcock opening 116 corresponds to the left straight port 110, and the left stopcock opening 116 corresponds to the right straight port 111. The left straight port 110 is open, the right straight port 111 is open, and the inlet port 109 is closed.

[0052] Right straight-through state: Rotate the stopcock 270° clockwise, the left straight-through port 110 closes, the right straight-through port 111 opens, and the inlet port 109 closes. Water will only enter through the right straight-through port 111 and flow out through the inlet port 109.

[0053] After the above four states have been switched in sequence, if there are no abnormal states, the state confirmation is now complete.

[0054] Step 2: Adjust the stopcock to meet the current usage requirements, then open the left straight port 110 and the right straight port 111, and connect the inlet port 109 to the corresponding pipe. This completes the filter valve installation.

[0055] Step 3: After the fluid medium enters through the left straight port 110 and the right straight port 111, the valve cover 102 and valve body 101, which are fastened by bolts 108, will bear the pressure of the medium. The gland 107 presses the sealing ring 106 and the plug bushing 104 and plug to ensure a seal, thus completing the medium introduction.

[0056] Step 4: The fluid medium enters the filter channel 2 through the inlet port 109. During the process of the medium passing through the filter unit, the filter unit starts to work. The medium passes through the filter screen 202, and the mesh of the filter screen 202 disturbs the flow state of the medium. The spherical packing 203 moves and is distributed in the space of the filter screen 202 due to the buoyancy of the fluid medium. At the same time, the spherical packing 203 starts to rotate due to the disturbance of the medium. The fluid medium and the spherical packing 203 make full contact and enter the pipeline from the other end of the filter channel 2. Thus, the adsorption of impurities is completed.

[0057] Step 5: During the process of full contact between the fluid medium and the spherical packing 203, impurities in the fluid medium are adsorbed by the spherical packing 203. During the period when the fluid medium enters the filter channel 2, the spherical packing 203 falls to the one-way inlet 205 at the lower end of the filter unit due to gravity. However, the spherical packing 203 cannot pass through and obstructs the flow of the medium. Affected by the pressure of the fluid medium, the fluid medium enters the collecting pipe 206 through the one-way outlet 204 at the upper end of the filter unit, enters the cleaning chamber through the inlet pipe 302 of the cleaning chamber 3, and then enters the diversion pipe 207 through the outlet pipe 303 of the cleaning chamber 3, flowing back to each filter unit. This completes the medium circulation.

[0058] Step 6: The fluid medium enters the collecting pipe 206 through the one-way inlet 205 at the top of the filter unit. During this process, the spherical packing 203 flows with the fluid medium into the collecting pipe 206, and then enters the cleaning chamber 3 through the inlet pipe 302. In the cleaning chamber 3, it travels along the volute path of the volute flow channel 304. During this process, the fluid medium is disturbed by the protrusions arranged on the side wall surface of the volute flow channel 304. Due to the disturbance of the fluid medium flow, the spherical packing 203 collides and rubs against each other and against the protrusions on the side wall of the volute flow channel 304. The impurities adsorbed by the spherical packing 203 are detached. After being detached, the impurities gradually sink down along the volute path with the medium and pass through the filter plate 301, while the spherical packing 203 cannot sink and continues to travel along the volute path with the medium. This completes the impurity detachment.

[0059] Step 7: After the spherical packing 203 travels with the fluid medium to the end of the volute 304, it will enter the branch pipe 207 along the outlet pipe 303, and then enter each filter unit along the branch pipe path of the branch pipe 207, thus completing the packing circulation.

[0060] Step 8: When a thorough filter valve cleaning is required, adjust the stopcock to rotate 90° clockwise. The left straight-through port 110 will open, the right straight-through port 111 will close, and the inlet port 109 will open, placing the filter valve in the left straight-through state. A large amount of fluid will flush the filter valve. Then, adjust the stopcock to rotate 90° clockwise again. The left straight-through port 110 will open, the right straight-through port 111 will open, and the inlet port 109 will close, placing the filter valve in the ready-to-connect state. Open the sealing cover 306 of the cleaning chamber 3, and the drain port 305 will release the impurities collected in the drain chamber. Then, adjust the stopcock to rotate 90° clockwise again. The left straight-through port 110 will close, the right straight-through port 111 will open, and the inlet port 109 will open, placing the filter valve in the right straight-through state. A large amount of fluid will flush the filter valve. Finally, adjust the stopcock and rotate it counterclockwise by 90°. The left straight port 110 and the right straight port 111 will open, and the inlet port 109 will close, indicating that the valve is ready to connect. Open the sealing cover 306 of the cleaning chamber 3, and the drain port 305 will release the impurities collected in the drain chamber. This completes the cleaning of the filter valve.

[0061] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A filter, characterized by, The filter channel and the cleaning chamber are arranged in parallel. The filter channel is horizontally arranged and is provided with a filter unit, the filter unit comprises a filter snap ring, filter screens and spherical fillers made of adsorbing material, the filter snap ring is coaxially arranged in the filter channel, the filter screens are arranged on two ring openings of the filter snap ring, the spherical fillers are filled between the filter screens of the two ring openings of the filter snap ring, the top and bottom of the filter snap ring are respectively provided with a one-way outlet and a one-way inlet, the one-way outlet and the one-way inlet only allow the spherical fillers to pass in one direction, the top and bottom of the filter channel are respectively provided with a liquid discharge port and a liquid return port, the liquid discharge port is connected with the one-way outlet, and the liquid return port is connected with the one-way inlet. The cleaning chamber is provided with a filter hole plate, the filter hole plate divides the cleaning chamber into an upper cleaning cavity and a lower sewage cavity, the cleaning cavity is provided with an inlet pipe and an outlet pipe, the inlet pipe is connected with the liquid discharge port, and the outlet pipe is connected with the liquid return port, and the cleaning cavity is provided with a cleaning member capable of cleaning the spherical fillers flowing with the fluid.

2. The filter of claim 1, wherein, The filter channel is provided with a plurality of filter units along the axial direction, the one-way outlets of the plurality of filter units are connected with the inlet pipe through a collecting pipe, and the outlet pipe is connected with the one-way inlets of the plurality of filter units through a distributing pipe.

3. The filter of claim 1, wherein, The one-way outlet and the one-way inlet are both non-return rings.

4. The filter of claim 1, wherein, The filter screens are square mesh screens.

5. The filter of claim 4, wherein, The cleaning member comprises a spiral flow channel arranged in the cleaning cavity, the spiral flow channel is horizontally arranged on the filter hole plate, the side wall of the spiral flow channel is densely provided with convex points, the inlet pipe is connected with the outermost flow channel of the spiral flow channel, and the outlet pipe is connected with the innermost flow channel of the spiral flow channel.

6. The filter of claim 5, wherein, The filter hole plate is provided with a strip-shaped hole.

7. The filter of claim 5, wherein, The sewage outlet is detachably connected with a sealing cover.

8. An assembled globe and globe type self-cleaning filter valve characterized by, The filter comprises a plug valve and a filter according to any one of claims 1-7, and the inlet end of the plug valve is connected with the liquid inlet end of the filter channel.

9. The assembled, self-cleaning, cock-and-filter valve of claim 8, wherein, The plug valve is a three-way valve, the inlet port of the three-way valve is connected with the liquid inlet end of the filter channel, and the left straight-through port and the right straight-through port of the three-way valve are respectively used for connecting left pipeline and right pipeline.

10. The assembled, self-cleaning, cock-and-filter valve of claim 9, wherein, The three-way valve comprises a valve body, a valve cover and a valve core; the top of the valve body is provided with a control port, and the sidewall of the valve body is respectively provided with a merging port, a left straight-through port and a right straight-through port; the valve core comprises a plug, a plug bushing and a plug limiter, the plug limiter comprises a limiting ring and a supporting spring, the limiting ring is installed on the bottom wall inside the valve body, the supporting spring is located in the limiting ring, the plug bushing is installed above the limiting ring, the plug bushing is provided with three bushing openings, the three bushing openings correspond to the merging port, the left straight-through port and the right straight-through port of the valve body respectively, the plug comprises a plug handle, a plug column, a plug cylinder and a bottom disc which are connected in sequence from top to bottom, the bottom disc is sleeved in the limiting ring, the bottom disc is placed on the supporting spring, the plug cylinder is sleeved in the plug bushing, the plug cylinder is provided with three plug openings, the three plug openings can correspond to the three bushing openings respectively in the rotating path, the plug column is rotationally connected to the valve cover, the valve cover is fixed on the top of the valve body through bolts, the plug handle is located outside the valve cover, a gland and a sealing ring are sleeved on the plug column between the valve cover and the control port, the gland is used to press the sealing ring on the plug bushing, and the sealing ring seals the control port.

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