A filter with a filter screen that is easy to replace

Abstract

The utility model discloses a filter convenient to change filter screen, the filter mechanism includes U -shaped pipe, the lower extreme of U -shaped pipe is established with sewage outlet, the upper extreme of U -shaped pipe is established with water purification outlet, the outer wall of U -shaped pipe and be located sewage outlet and water purification outlet's outside all are fixedly connected with flange, the inside upper end of U -shaped pipe is fixedly installed with reduction gearbox through screw, the length and width of reduction gearbox are all identical with the U -shaped pipe inner diameter of periphery, the inner wall of reduction gearbox is established with a plurality of shunt grooves, each shunt groove is respectively along the length direction of reduction gearbox equidistance arrangement, and each shunt groove's middle piece all are arc, and U -shaped pipe upper end inner wall sets up the reduction gearbox with shunt groove, and the water flow is divided into a plurality of strands after passing through each shunt groove, and then reduce the local impact force to filter screen structure, in addition, the middle piece of shunt groove is arc structure, and the water flow can further reduce after flowing through shunt groove, and then reduce the impact to filter screen surface.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to a filter that facilitates filter screen replacement. Background Technology

[0002] A filter is a device used to separate solid particles or impurities from a fluid. It intercepts impurities through a filter screen, filter element, or medium, allowing clean fluid to pass through, thereby protecting downstream equipment, improving fluid purity, or meeting process requirements. Filters come in various types and are suitable for multiple fields such as water treatment, industrial manufacturing, food and beverage, and air purification.

[0003] Chinese patent discloses a filter with an easy-to-replace screen (publication number: CN220715051U). This device uses a diversion mechanism; wastewater enters through the inlet pipe and then is distributed through a grid-like diversion system to several outlet pipes, ensuring even distribution of wastewater across the filter screen. This prevents impurities from accumulating in the middle of the screen and causing damage, thus enhancing the filter's effectiveness. However, this device still has the following problems:

[0004] The aforementioned device discharges water directly above the filter screen through the outlet pipe. The water flow continuously poundes against the filter screen due to gravity. This continuous impact may shorten the lifespan of the filter screen structure. In addition, although the multiple outlet pipes divert the water flow and prevent local accumulation of impurities on the filter screen surface, the filter screen surface still lacks self-cleaning ability, and the filter requires frequent replacement of the filter screen. Utility Model Content

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A filter that facilitates filter screen replacement includes a drain mechanism, wherein a filter mechanism is disposed inside the drain mechanism;

[0007] The filtration mechanism includes a U-shaped tube, with a sewage outlet at the lower end of the U-shaped tube and a clean water outlet at the upper end of the U-shaped tube. Flanges are fixedly connected to the outer wall of the U-shaped tube and outside the sewage outlet and the clean water outlet.

[0008] The upper part of the U-shaped tube is fixedly installed with a gearbox by screws. The length and width of the gearbox are consistent with the inner diameter of the outer U-shaped tube.

[0009] The inner wall of the gearbox is provided with several flow channels, each of which is equidistant along the length of the gearbox, and the middle section of each flow channel is arc-shaped.

[0010] As a further embodiment of this utility model: several mounting rails are fixedly installed on the upper inner wall of the water purifier, and buffer pads are fixedly connected to both sides of the inner wall of each mounting rail. Furthermore, a mounting frame is movably installed inside each mounting rail, and both sides of the outer wall of the mounting frame abut against the surface of the buffer pad.

[0011] As a further embodiment of this utility model: a filter screen is fixedly connected to the middle of the inner wall of each of the mounting frames, and a pull rod is slidably connected to the inner wall of each of the mounting frames above the filter screen. A hand groove is also provided on the top of the mounting frame, and the hand groove is connected through the pull rod.

[0012] As a further embodiment of this utility model: the sewage discharge mechanism includes a support shell, the inner wall of the support shell is integrally supported and fixedly installed with the U-shaped pipe, and both the sewage outlet and the clean water outlet are located outside the support shell.

[0013] As a further embodiment of this utility model: the top of the support shell is fixedly connected to an inspection door by bolts, the top of the inspection door is fixedly installed with a handle, and the bottom surface of the inspection door abuts against the top surface of each mounting frame.

[0014] As a further embodiment of this utility model: a drain pipe is fixedly and penetrates the outer wall of the support shell near the lower end of each mounting frame, a drain valve is installed on the outer wall of the drain pipe, and the side of the drain valve is fixedly installed to the surface of the support shell.

[0015] As a further embodiment of this utility model: the upper end of each of the drain pipes extends into the interior of the support shell, and the top end of the drain pipe is fixed and connected to the U-shaped pipe.

[0016] The beneficial effects of this utility model are:

[0017] (1) This utility model transports the sewage to be purified from bottom to top through a U-shaped pipe, and a deceleration box with a diversion groove is set on the inner wall of the upper end of the U-shaped pipe. After the water flows through each diversion groove, it is divided into multiple streams, thereby reducing the local impact force on the filter screen structure. In addition, the middle section of the diversion groove has an arc structure, and the water flow can be further decelerated after passing through the diversion groove, thereby reducing the impact on the filter screen surface.

[0018] (2) Drain pipes are installed near the bottom of each filter screen. The debris attached to the surface of the filter screen is peeled off by gravity and falls into the drain pipe, thus ensuring that the filter screen has a certain self-cleaning ability. By opening the drain valve, the sewage can carry the impurities inside the drain pipe out. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the U-shaped tube in this utility model;

[0022] Figure 3 This is a schematic diagram of the overall structure of the gearbox in this utility model;

[0023] Figure 4 This is a cross-sectional structural schematic diagram of the gearbox in this utility model;

[0024] Figure 5 This is a cross-sectional view of the mounting frame in this utility model.

[0025] In the diagram: 1. Sewage discharge mechanism; 101. Support shell; 102. Inspection door; 103. Handle; 104. Sewage discharge pipe; 105. Sewage discharge valve; 2. Filtration mechanism; 201. U-shaped pipe; 202. Sewage outlet; 203. Clean water outlet; 204. Flange; 205. Mounting rail; 206. Buffer pad; 207. Mounting frame; 208. Filter screen; 209. Hand groove; 210. Tie rod; 211. Gearbox; 212. Diversion channel. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-5 As shown, a filter with an easy-to-replace filter screen includes a sewage discharge mechanism 1, inside which a filter mechanism 2 is installed. The filter mechanism 2 includes a U-shaped tube 201, with a sewage outlet 202 at the lower end and a clean water outlet 203 at the upper end. Flanges 204 are fixedly connected to the outer wall of the U-shaped tube 201, located outside the sewage outlet 202 and the clean water outlet 203. A gearbox 211 is fixedly installed inside the upper end of the U-shaped tube 201 by screws. The length and width of the gearbox 211 are consistent with the inner diameter of the outer U-shaped tube 201. The inner wall of the gearbox 211 has several diversion grooves 212, which are equidistantly arranged along the length of the gearbox 211, and the middle section of each diversion groove 212 is arc-shaped. Figures 2-3 As shown, after the water flows through the diversion channel 212, the flow resistance increases, thereby reducing the flow velocity of the water.

[0028] Several mounting rails 205 are fixedly installed on the upper inner wall of the water inlet 203. Buffer pads 206 are fixedly connected to both sides of the inner wall of each mounting rail 205. A mounting frame 207 is also movably installed inside each mounting rail 205, and both sides of the outer wall of the mounting frame 207 abut against the surface of the buffer pad 206. Figure 2 As shown, the buffer pad 206 is made of rubber. The buffer pad 206 absorbs the impact on the mounting frame 207 through slight deformation, thereby improving the stability of the mounting frame 207.

[0029] Each mounting frame 207 has a filter screen 208 fixedly connected to the center of its inner wall. Each mounting frame 207 also has a pull rod 210 slidably connected to its inner wall above the filter screen 208. A hand groove 209 is also provided at the top of each mounting frame 207, and the hand groove 209 is connected to the pull rod 210 through it. Figure 5 As shown, by lifting and unfolding the pull rod 210, it is convenient to move the mounting frame 207 away from the mounting rail 205;

[0030] The sewage discharge mechanism 1 includes a support shell 101. The inner wall of the support shell 101 is integrally supported and fixedly installed with the U-shaped pipe 201. The sewage outlet 202 and the clean water outlet 203 are both located on the outside of the support shell 101. The top of the support shell 101 is fixedly connected to the inspection door 102 by bolts. The top of the inspection door 102 is fixedly installed with a handle 103. The bottom surface of the inspection door 102 abuts against the top surface of each mounting frame 207. The outer wall of the support shell 101 and near the lower end of each mounting frame 207 are fixedly connected with a sewage pipe 104. The outer wall of the sewage pipe 104 is installed with a sewage valve 105, and the side of the sewage valve 105 is fixedly installed with the surface of the support shell 101. The size of the sewage pipe 104 and the type of the sewage valve 105 can be purchased according to the actual sewage discharge situation, and will not be described here.

[0031] The upper end of each drain pipe 104 extends into the interior of the support shell 101, and the top end of the drain pipe 104 is fixed and connected to the U-shaped pipe 201.

[0032] The working principle of this utility model:

[0033] When the device is in use, the external sewage pipe is connected to the sewage outlet 202. The sewage passes through the U-shaped pipe 201 and is discharged from the clean water outlet 203. During this period, the sewage slows down after passing through the diversion channel 212. Then the sewage passes through the filter screens 208 of each stage and filters out impurities of different particle sizes. Some of the impurities attached to the surface of the filter screen 208 fall into the sewage pipe 104 under the action of gravity. By opening the sewage valve 105, the sewage and impurities can be discharged along the sewage pipe 104.

[0034] Secondly, when replacing the filter screen 208, remove the bolts above the inspection door 102, and the operator lifts the handle 103 to separate the inspection door 102. Then, the operator holds the pull rod 210 through the hand groove 209 and lifts the pull rod 210 to gradually bring the mounting frame 207 away from the mounting rail 205.

[0035] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A filter with an easy-to-replace screen, comprising a drain mechanism (1), wherein a filter mechanism (2) is provided inside the drain mechanism (1); Its features are, The filtration mechanism (2) includes a U-shaped tube (201), with a sewage outlet (202) at the lower end of the U-shaped tube (201) and a clean water outlet (203) at the upper end of the U-shaped tube (201). Flanges (204) are fixedly connected to the outer wall of the U-shaped tube (201) and outside the sewage outlet (202) and the clean water outlet (203). The upper inner end of the U-shaped tube (201) is fixedly installed with a gearbox (211) by screws. The length and width of the gearbox (211) are consistent with the inner diameter of the outer U-shaped tube (201). The inner wall of the gearbox (211) is provided with a plurality of flow dividers (212), each of the flow dividers (212) being arranged at equal intervals along the length of the gearbox (211), and the middle section of each of the flow dividers (212) being arc-shaped.

2. The filter with an easily replaceable filter screen according to claim 1, characterized in that, The upper inner wall of the water inlet (203) is also fixedly installed with several mounting rails (205). Each mounting rail (205) has a buffer pad (206) fixedly connected to both sides of its inner wall. Each mounting rail (205) also has a mounting frame (207) movably installed inside its interior. The outer walls of the mounting frame (207) abut against the surface of the buffer pad (206).

3. A filter with an easily replaceable filter screen according to claim 2, characterized in that, Each of the mounting frames (207) has a filter screen (208) fixedly connected to the middle of its inner wall. Each of the mounting frames (207) has a pull rod (210) slidably connected to its inner wall above the filter screen (208). The top of each mounting frame (207) also has a hand groove (209) through which the pull rod (210) is connected.

4. A filter with an easily replaceable filter screen according to claim 3, characterized in that, The sewage discharge mechanism (1) includes a support shell (101), the inner wall of the support shell (101) is integrally supported and fixedly installed with the U-shaped pipe (201), and the sewage outlet (202) and the clean water outlet (203) are both located outside the support shell (101).

5. A filter with an easily replaceable filter screen according to claim 4, characterized in that, The top of the support shell (101) is fixedly connected to an inspection door (102) by bolts. A handle (103) is fixedly installed on the top of the inspection door (102). The bottom surface of the inspection door (102) abuts against the top surface of each mounting frame (207).

6. A filter with an easily replaceable filter screen according to claim 5, characterized in that, A drain pipe (104) is fixed and connected through the outer wall of the support shell (101) and near the lower end of each mounting frame (207). A drain valve (105) is installed on the outer wall of the drain pipe (104), and the side of the drain valve (105) is fixedly installed on the surface of the support shell (101).

7. A filter with an easily replaceable filter screen according to claim 6, characterized in that, The upper end of each of the drain pipes (104) extends into the interior of the support shell (101), and the top end of the drain pipe (104) is fixed and connected to the U-shaped pipe (201).

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