Anti-clogging filter for drip irrigation

Abstract

The utility model discloses an anti -blocking filter for drip irrigation relates to the field of agricultural drip irrigation, including support mechanism, support mechanism top is provided with two filter mechanism, and filter mechanism includes filter bin, and filter bin one end is fixed with filter end cover, and filter end cover one end is fixed with second three -way valve, and filter end cover is fixedly connected with the water inlet hopper in, and the water inlet hopper is slidably connected with the net support, and the net support other end is installed with the cylindrical filter screen, and the end bracket is sealingly slidably connected in the filter bin, and the end bracket is movably connected with the cylindrical filter screen, and the waterproof switch is installed in the filter bin, and two filter bins are connected through the communication valve, and the base is provided with drive mechanism. The beneficial effect lies in: through the parallel arrangement of two filter mechanisms, when the jam occurs, the waterproof switch generates the electric signal and makes the drive mechanism work, so that the switching of the filter mechanism is realized, the continuous supply of the filtered water into the drip irrigation pipe is ensured, and the backwashing of the filter device for the jam is realized through the shunting of the filtered water.

Description

Technical Field

[0001] This utility model relates to the field of agricultural drip irrigation, and in particular to a filter for drip irrigation that prevents clogging. Background Technology

[0002] Drip irrigation filters are key components of drip irrigation systems, primarily responsible for removing impurities from irrigation water, ensuring water quality, and preventing blockages in the flow channels of the drip irrigation emitters. In agricultural irrigation, properly configuring the drip irrigation filtration system is an important way to mitigate blockages in various components of the drip irrigation system.

[0003] For example, patent document CN221601336U discloses an anti-clogging drip irrigation filter, relating to the field of agricultural machinery technology. It includes a housing, with water valves rotatably connected to the top and bottom of the housing, and caps meshing with the top and bottom of the housing. A filtering mechanism is located inside the housing, comprising two pull rods. The tops of the two pull rods are fixedly connected to the housing, and threaded sleeves are fixedly connected to the tops of the two pull rods. Bolts are rotatably connected to the front and rear of the threaded sleeves, with the middle of the bolts meshing with the housing and the bottom of the bolts meshing with a nut. A top plate is fixedly connected to the bottom of the two pull rods, and an activated carbon plate is fixedly connected to the bottom of the top plate. A bottom plate is fixedly connected to the bottom of the activated carbon plate, and three screws are rotatably connected to the inner side of the bottom plate. Through this filtering structure, a multi-stage filtration effect is achieved, solving the problems of traditional drip irrigation filters being unable to perform multiple filtrations and being inconvenient to clean.

[0004] In existing technologies, most methods involve opening the filter to clean the blockage or using a brush to clean the filter screen. However, due to the fine mesh, brush cleaning is not very effective. Therefore, an automatic backwashing method is used to clean the filter screen and thus prevent clogging. Utility Model Content

[0005] The purpose of this invention is to provide a clog-resistant drip irrigation filter to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A clog-resistant drip irrigation filter includes a support mechanism, which includes a base. Two symmetrically arranged filter mechanisms are mounted on the top of the base. Each filter mechanism includes a filter chamber fixedly connected to the base. One end of each filter chamber is fixedly connected to a filter end cap, and another end of the filter end cap is fixedly connected to a second three-way valve. A water inlet is fixedly connected inside the filter end cap, and a mesh support is slidably connected to the water inlet. A spring is fixedly connected between the mesh support and the water inlet. A cylindrical filter screen is mounted on the other end of the mesh support. An end bracket is slidably and sealed inside the filter chamber, and the end bracket is movably connected to the cylindrical filter screen. A waterproof switch is installed inside the filter chamber. A drain pipe is fixedly connected to one side of the filter chamber, and a connecting pipe is fixedly connected to another side of the filter chamber. The two connecting pipes are sealed and fixedly connected via a connecting valve. A drive mechanism is mounted on the base.

[0008] Preferably, a fixing frame is fixedly connected to the rear end of the top of the base, and an inlet pipe is fixedly connected to the fixing frame. The inlet pipe is T-shaped, and the two ends of the front side of the inlet pipe are sealed and fixedly connected to two second three-way valves. The other end of the second three-way valve is connected to a sewage collection device. A first three-way valve is fixedly connected to the front side of the top of the base. The first three-way valve is sealed and fixedly connected to two drain pipes. An outlet pipe is fixedly connected to the front end of the first three-way valve. The first three-way valve is fixedly connected to the base, and a connecting valve is fixedly connected to the base.

[0009] Preferably, the filter chamber and the filter end cap are fixedly connected by a flange and bolts, and the cylindrical filter screen and the screen support are connected by a threaded seal. The cylindrical filter screen is made of metal.

[0010] Preferably, the drive mechanism includes a first electric telescopic rod fixedly connected to the base, a switching bracket fixedly connected to the output end of the first electric telescopic rod, the switching bracket being Y-shaped, a gear fixedly connected to the movable end of the second three-way valve, two symmetrically arranged first racks fixedly connected to the rear end of the switching bracket, the two first racks meshing with the gears on the two second three-way valves on the same side, a gear fixedly connected to the movable end of the first three-way valve, a second rack fixedly connected to the front end of the switching bracket, the second rack meshing with the gear on the first three-way valve, and a waterproof switch electrically connected to the first electric telescopic rod.

[0011] Preferably, a gear is fixedly connected to the movable end of the connecting valve, a second electric telescopic rod is fixedly connected to the base, a third rack is fixedly connected to the output end of the second electric telescopic rod, the third rack meshes with the gear on the connecting valve, a timer is fixedly connected to one side of the second electric telescopic rod, the timer is electrically connected to the second electric telescopic rod, and a waterproof switch is electrically connected to the timer.

[0012] Preferably, the base is fixedly connected to a trapezoidal support leg, and the base is made of plastic.

[0013] The beneficial effects are as follows: by setting the two filtration mechanisms in parallel, when clogging occurs, the waterproof switch generates an electrical signal to drive the mechanism, thereby switching the filtration mechanisms and ensuring that filtered water can be continuously supplied to the drip irrigation pipe. Furthermore, by diverting the filtered water, the clogged filtration device is backwashed, thus giving the filter an anti-clogging function and improving its service life.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a perspective view of an anti-clogging drip irrigation filter according to the present invention;

[0017] Figure 2 This is a perspective view of the relative positions of the fixing frame and the base of the anti-clogging drip irrigation filter described in this utility model;

[0018] Figure 3 This is a top view of an anti-clogging drip irrigation filter according to the present invention;

[0019] Figure 4 This is a right-side cross-sectional view of the anti-clogging drip irrigation filter described in this utility model;

[0020] Figure 5 This is a perspective view showing the relative positions of the drive mechanism and the filter mechanism of the anti-clogging drip irrigation filter described in this utility model.

[0021] Figure 6 This is a left view showing the relative positions of the drive mechanism and the filter mechanism of the anti-clogging drip irrigation filter described in this utility model.

[0022] Figure 7 This is a three-dimensional view of the filtration mechanism structure of an anti-clogging drip irrigation filter according to the present invention;

[0023] Figure 8 This is a lower sectional view of the filtration mechanism of the anti-clogging drip irrigation filter described in this utility model.

[0024] The annotations in the attached figures are explained as follows:

[0025] 101. Base; 102. Inlet pipe; 103. Outlet pipe; 104. Fixing frame; 105. Connecting valve; 106. First three-way valve; 201. Filter chamber; 202. Filter end cap; 203. Second three-way valve; 204. Inlet hopper; 205. Mesh support; 206. Columnar filter screen; 207. Spring; 208. End bracket; 209. Waterproof switch; 210. Drain pipe; 211. Connecting pipe; 301. First electric telescopic rod; 302. Switching bracket; 303. First rack; 304. Second rack; 305. Gear; 306. Second electric telescopic rod; 307. Timer; 308. Third rack. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] like Figures 1-8As shown, an anti-clogging drip irrigation filter includes a support mechanism, which includes a base 101. Two symmetrically arranged filter mechanisms are disposed on the top of the base 101. Each filter mechanism includes a filter chamber 201 bolted to the base 101. A filter end cap 202 is fixedly connected to one end of the filter chamber 201. A second three-way valve 203 is sealed and fixedly connected to one end of the filter end cap 202. A water inlet hopper 204 is welded and fixedly connected inside the filter end cap 202. A mesh support 205 is slidably and sealed on the water inlet hopper 204. A spring 207 is fixedly connected between the mesh support 205 and the water inlet hopper 204. A cylindrical filter screen 206 is installed at the other end of the mesh support 205. An end cap 206 is slidably and sealed inside the filter chamber 201. The bracket 208 is movably connected to the cylindrical filter screen 206. A waterproof switch 209 is installed inside the filter chamber 201. A drain pipe 210 is fixedly connected to one side of the filter chamber 201, and a connecting pipe 211 is fixedly connected to one side of the filter chamber 201. The two connecting pipes 211 are sealed and fixedly connected by a connecting valve 105, which is normally closed. A drive mechanism is provided on the base 101. During drip irrigation, it is necessary to ensure the cleanliness of the water to avoid clogging of the drip irrigation pipe. After prolonged use, accumulated impurities can cause the filter screen to become clogged. In existing technologies, most methods involve opening the filter to clean the clog or cleaning the filter screen with a brush. However, due to the fine mesh, brush cleaning is less effective. The filter screen is poorly cleaned, so an automatic backwashing method is used to clean it and prevent clogging. This device has two parallel filtration mechanisms. External water enters the device through the inlet pipe 102. During operation, the second three-way valve 203 on one side is closed, while the second three-way valve 203 on the other side is open, allowing only one side of the filtration mechanism to perform filtration. When the cylindrical filter screen 206 becomes clogged, the incoming water flow pushes the cylindrical filter screen 206 to move. The cylindrical filter screen 206 then moves the screen support 205 and the end bracket 208. At this time, the spring 207 is stretched, and the end bracket 208 contacts the waterproof switch 209. The waterproof switch 209 generates an electrical signal to activate the drive mechanism, which in turn activates the second three-way valve 203. When switching states, the connecting valve 105 switches to the open state, and the first three-way valve 106 switches states, thus switching the filter mechanism to ensure a continuous flow of filtered water. The filtered water is diverted into the filter chamber 201 on the other side, which can directionally flush the cylindrical filter screen 206. The wastewater generated by backwashing is discharged from the device through the second three-way valve 203. Through the parallel arrangement of the two filter mechanisms, when clogging occurs, the waterproof switch 209 generates an electrical signal to drive the mechanism, thereby realizing the switching of the filter mechanism. This ensures that filtered water can be continuously supplied to the drip irrigation pipe, and the diversion of filtered water enables backwashing of the clogged filter device, thus giving the filter an anti-clogging function and improving the service life of the filter.

[0030] A fixing frame 104 is welded and fixedly connected to the top rear end of the base 101. An inlet pipe 102 is bolted to the fixing frame 104. The inlet pipe 102 is T-shaped, with its front ends sealed and fixedly connected to two second three-way valves 203. A sewage collection device is externally connected to the other end of each second three-way valve 203. A first three-way valve 106 is bolted and fixedly connected to the top front of the base 101. The first three-way valve 106 is sealed and fixedly connected to two drain pipes 210. An outlet pipe 103 is sealed and fixedly connected to the front end of the first three-way valve 106. The first three-way valve 106 is bolted and fixedly connected to the base 101. A connecting valve 10... 5 is bolted to the base 101. The bottom of the base 101 is fixedly connected with trapezoidal support legs. The base 101 is made of plastic, which ensures the lightweight of the base 101. External water enters the device from the inlet pipe 102. After filtration, the filtered water flows out of the device from the outlet pipe 103 and enters the drip irrigation pipe. The connecting valve 105 is normally closed. It is opened for a certain period of time during cleaning. After cleaning, the connecting valve 105 returns to the normally closed state. The first three-way valve 106 can switch the connection state between the outlet pipe 103 and the two filter chambers 201. The first three-way valve 106 and the two second three-way valves 203 cooperate to switch the filtration mechanism.

[0031] The filter chamber 201 and the filter end cover 202 are fixedly connected by a flange and bolts. The cylindrical filter screen 206 is connected to the screen support 205 by a threaded seal. The cylindrical filter screen 206 is made of metal. When the device is under maintenance, the staff can open the flange to check the internal condition of the filter chamber 201. The threaded connection between the screen support 205 and the cylindrical filter screen 206 facilitates the disassembly and assembly of the cylindrical filter screen 206.

[0032] The drive mechanism includes a first electric telescopic rod 301 bolted to the base 101. A switching bracket 302 is fixedly connected to the output end of the first electric telescopic rod 301. The switching bracket 302 is Y-shaped. A gear 305 is fixedly connected to the movable end of the second three-way valve 203. Two symmetrically arranged first racks 303 are bolted to the rear end of the switching bracket 302. The two first racks 303 mesh with the gears 305 on the two second three-way valves 203 on the same side. The gear 305 is fixedly connected to the movable end of the first three-way valve 106. The front end of the switching bracket 302 is bolted... A second rack 304 is fixedly connected to the base 101, and the second rack 304 meshes with a gear 305 on the first three-way valve 106. A waterproof switch 209 is electrically connected to the first electric telescopic rod 301. A gear 305 is fixedly connected to the movable end of the connecting valve 105. A second electric telescopic rod 306 is bolted to the base 101. A third rack 308 is fixedly connected to the output end of the second electric telescopic rod 306, and the third rack 308 meshes with a gear 305 on the connecting valve 105. A timer 307 is bolted to one side of the second electric telescopic rod 306. The timer 307 is connected to the second... The electric telescopic rod 306 is electrically connected, and the waterproof switch 209 is electrically connected to the timer 307. The waterproof switch 209 generates an electrical signal, which drives the first electric telescopic rod 301 to move the switching bracket 302. The switching bracket 302 drives the first rack 303 to move, and the first rack 303 drives the two rear gears 305 to rotate. The gears 305 drive the second three-way valve 203 to switch states. At the same time, the switching bracket 302 drives the front second rack 304 to move, and the second rack 304 drives the front gear 305 to rotate. The gears 305 drive the first three-way valve 106 to switch states. When the state changes, the waterproof switch 209 generates an electrical signal to start the timer 307. The timer 307 generates an electrical signal to activate the second electric telescopic rod 306. The second electric telescopic rod 306 drives the third rack 308 to move. The third rack 308 drives the gear 305 on the connecting valve 105 to move. The gear 305 drives the connecting valve 105 to switch to the open state. In this way, the filter chambers 201 on both sides are connected and can perform backwashing. After the connecting valve 105 has been open for a period of time, the timer 307 sends an electrical signal again to reset the second electric telescopic rod 306. At this time, the cleaning is completed.

[0033] Working principle: External water enters the device through the inlet pipe 102. During operation, the second three-way valve 203 on one side is closed, while the second three-way valve 203 on the other side is open, allowing only one side of the filter mechanism to perform filtration. When the cylindrical filter screen 206 becomes clogged, the incoming water flow pushes the cylindrical filter screen 206 to move. The cylindrical filter screen 206 then moves the screen support 205 and the end bracket 208. At this time, the spring 207 is stretched, and the end bracket 208 contacts the waterproof switch 209. The waterproof switch 209 generates an electrical signal to activate the drive mechanism. The first electric telescopic rod 301 drives the switching bracket 302 to move. The switching bracket 302 drives the first rack 303 to move, which in turn drives the two rear gears 305 to rotate. The gears 305 then drive the second three-way valve 203 to switch states. Simultaneously, the switching bracket 302 drives the front second rack 304 to move, which in turn drives the front gears 305 to rotate. The gears 305 then drive the second three-way valve 203 to switch states. When the first three-way valve 106 switches states, the waterproof switch 209 generates an electrical signal to start the timer 307. The timer 307 generates an electrical signal to activate the second electric telescopic rod 306. The second electric telescopic rod 306 drives the third rack 308 to move. The third rack 308 drives the gear 305 on the connecting valve 105 to move. The gear 305 drives the connecting valve 105 to switch to the open state. This switches the filtration mechanism, ensuring a continuous flow of filtered water. The filtered water is diverted into the filter chamber 201 on the other side, which can directionally flush the cylindrical filter screen 206. The wastewater generated by backwashing is discharged from the device through the second three-way valve 203. Through the parallel arrangement of the two filtration mechanisms, when clogging occurs, the waterproof switch 209 generates an electrical signal to activate the drive mechanism, thereby realizing the switching of the filtration mechanism. This ensures that filtered water can be continuously supplied to the drip irrigation pipe, and the diversion of filtered water enables backwashing of the clogged filter device, thus giving the filter an anti-clogging function and improving the filter's service life.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A clog-resistant drip irrigation filter, comprising a support mechanism, characterized in that: The support mechanism includes a base (101). Two symmetrically arranged filter mechanisms are provided on the top of the base (101). Each filter mechanism includes a filter chamber (201) fixedly connected to the base (101). A filter end cap (202) is fixedly connected to one end of the filter chamber (201). A second three-way valve (203) is fixedly connected to one end of the filter end cap (202). A water inlet hopper (204) is fixedly connected inside the filter end cap (202). A mesh support (205) is slidably connected to the water inlet hopper (204). A spring is fixedly connected between the mesh support (205) and the water inlet hopper (204). A spring (207) is provided. A cylindrical filter screen (206) is installed at the other end of the mesh support (205). An end bracket (208) is slidably connected inside the filter chamber (201). The end bracket (208) is movably connected to the cylindrical filter screen (206). A waterproof switch (209) is installed inside the filter chamber (201). A drain pipe (210) is fixedly connected to one side of the filter chamber (201). A connecting pipe (211) is fixedly connected to one side of the filter chamber (201). The two connecting pipes (211) are sealed and fixedly connected through a connecting valve (105). A driving mechanism is provided on the base (101).

2. The anti-clogging drip irrigation filter according to claim 1, characterized in that: A fixing frame (104) is fixedly connected to the top rear end of the base (101). An inlet pipe (102) is fixedly connected to the fixing frame (104). The inlet pipe (102) is T-shaped. The two ends of the front side of the inlet pipe (102) are sealed and fixedly connected to two second three-way valves (203). The other end of the second three-way valve (203) is connected to a sewage collection device. A first three-way valve (106) is fixedly connected to the top front side of the base (101). The first three-way valve (106) is sealed and fixedly connected to two drain pipes (210). An outlet pipe (103) is fixedly connected to the front end of the first three-way valve (106). The first three-way valve (106) is fixedly connected to the base (101). The connecting valve (105) is fixedly connected to the base (101).

3. The anti-clogging drip irrigation filter according to claim 1, characterized in that: The filter chamber (201) and the filter end cap (202) are fixedly connected by a flange and bolts. The cylindrical filter screen (206) is threadedly sealed to the mesh support (205). The cylindrical filter screen (206) is made of metal.

4. A clog-resistant drip irrigation filter according to claim 2, characterized in that: The driving mechanism includes a first electric telescopic rod (301) fixedly connected to the base (101). A switching bracket (302) is fixedly connected to the output end of the first electric telescopic rod (301). The switching bracket (302) is Y-shaped. A gear (305) is fixedly connected to the movable end of the second three-way valve (203). Two symmetrically arranged first racks (303) are fixedly connected to the rear end of the switching bracket (302). The two first racks (303) mesh with the gears (305) on the two second three-way valves (203) on the same side. The gear (305) is fixedly connected to the movable end of the first three-way valve (106). A second rack (304) is fixedly connected to the front end of the switching bracket (302). The second rack (304) meshes with the gear (305) on the first three-way valve (106). The waterproof switch (209) is electrically connected to the first electric telescopic rod (301).

5. A clog-resistant drip irrigation filter according to claim 4, characterized in that: The gear (305) is fixedly connected to the movable end of the connecting valve (105). A second electric telescopic rod (306) is fixedly connected to the base (101). A third rack (308) is fixedly connected to the output end of the second electric telescopic rod (306). The third rack (308) meshes with the gear (305) on the connecting valve (105). A timer (307) is fixedly connected to one side of the second electric telescopic rod (306). The timer (307) is electrically connected to the second electric telescopic rod (306). The waterproof switch (209) is electrically connected to the timer (307).

6. A clog-resistant drip irrigation filter according to claim 1, characterized in that: The base (101) is fixedly connected to a trapezoidal support leg at its bottom, and the base (101) is made of plastic.

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