Chemical pipeline filter with easy-to-clean screen

Abstract

The utility model discloses an easily clean filter screen's chemical pipeline filter, including pipeline filter, the rear end fixed setting of pipeline filter has filter screen flush cleaning mechanism, the pipeline filter includes filter jar, the filter screen cylinder of clamping fixed in the inner chamber of filter jar and respectively fixed in the liquid inlet port and liquid outlet port of filter jar left and right two sides. This scheme sets up filter screen cylinder in filter jar, and chemical liquid enters through liquid inlet port, and after filtering through the filter hole of screen cylinder, discharges from liquid outlet port, can effectively intercept impurity. In filter screen flush cleaning mechanism, the water pump draws and washes liquid, and directly washes filter screen cylinder filter hole through direct -firing spray head, and oblique -shooting head washes the inner wall of jar body and forms vortex auxiliary scour, and the cleaning effect is good. Meanwhile, the end cover is detachable, and the filter screen cylinder can be conveniently taken out through the handle, and it is convenient to clean thoroughly or replace.

Description

Technical Field

[0001] This utility model relates to the technical field of pipeline filter components, specifically to a chemical pipeline filter with an easy-to-clean filter screen. Background Technology

[0002] In chemical production processes, chemical pipeline filters are crucial equipment for ensuring smooth production flows and product quality. While existing chemical pipeline filters can achieve basic filtration functions, they generally suffer from difficulties in cleaning the filter screens. After prolonged use, the filter screen pores are easily clogged by impurities, leading to reduced filtration efficiency and affecting the normal flow of chemical liquids. Traditional cleaning methods often require disassembling the entire filter to remove and clean or replace the filter screen, a cumbersome and time-consuming process that increases equipment downtime and maintenance costs. Furthermore, some filters only require simple rinsing of the filter screen, which is insufficient to thoroughly remove stubborn impurities from the filter pores, resulting in poor cleaning effects and impacting the quality of subsequent filtration. Therefore, there is an urgent need for a chemical pipeline filter that allows for convenient and efficient screen cleaning to address the shortcomings of existing technologies. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for a chemical pipeline filter with an easy-to-clean filter screen, thereby overcoming the shortcomings mentioned in the background art. To address the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] The filter includes a pipeline filter, the rear end of which is fixedly equipped with a filter screen washing and cleaning mechanism; the pipeline filter includes a filter tank, a filter screen cylinder snapped and fixed in the inner cavity of the filter tank, and an inlet port and an outlet port respectively fixed on the left and right sides of the filter tank; the rear end port of the filter tank is fixedly connected to a bottom cover, and the front end port of the filter tank is locked and connected to an end cover by a latch.

[0005] The filter washing and cleaning mechanism includes a water tank fixed on the rear side wall of the filter tank, a water pump fixed on the left side wall of the water tank, and an infusion pipe connected to the output end of the water pump via a connector. The section of the infusion pipe away from the water pump passes through the inner cavity of the filter tank and is connected to a direct spray nozzle. Two sets of oblique spray nozzles are fixedly connected in a ring array on the outer surface of the infusion pipe.

[0006] As a preferred embodiment of this utility model: a fixing ring is fixedly connected to the front side of the inner cavity of the filter tank, a filter cylinder frame is fixedly connected to the front end face of the filter screen cylinder, and a handle is fixedly connected inside the filter cylinder frame.

[0007] As a preferred embodiment of this utility model: the rear end face of the end cap is in close contact with the front end of the handle, so that the filter cylinder frame and the fixing ring are in contact with each other through the handle.

[0008] As a preferred embodiment of this utility model, there is a gap between the outer surface of the filter screen cylinder and the inner wall of the filter tank to allow liquid to flow.

[0009] As a preferred embodiment of this utility model: the inner port of the liquid inlet is located in front of the front port of the filter cylinder, and the inner port of the liquid outlet is located behind the front port of the filter cylinder.

[0010] As a preferred embodiment of this utility model: the inner central area of ​​the bottom cover is provided with a through hole for the infusion tube to pass through, and a sealing ring is filled and fixed inside the through hole.

[0011] As a preferred embodiment of this utility model: the pump's pumping port is connected to a pumping pipe that extends into the water tank via a connector.

[0012] As a preferred embodiment of this utility model: a liquid level sensor is installed on the inner wall of the water tank, and a liquid replenishment port is fixed on the front side wall of the water tank.

[0013] As a preferred embodiment of this utility model: the set of oblique jet nozzles on the front side has an angle of 20-35° with the axis of the infusion tube, the set of oblique jet nozzles on the rear side has an angle of 30-60° with the axis of the infusion tube, and the spray ports of the oblique jet nozzles are all facing the inner wall of the filter tank, while the spray ports of the straight jet nozzles are facing the filter holes on the rear side wall of the filter screen cylinder.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] This design incorporates a filter screen inside the filter tank. Chemical liquids enter through the inlet, pass through the filter screen's apertures, and are discharged from the outlet, effectively intercepting impurities. In the filter screen washing and cleaning mechanism, a water pump draws washing liquid, which is directly sprayed through nozzles to wash the filter screen apertures, while angled nozzles wash the inner wall of the tank and create a vortex to assist in rinsing, resulting in excellent cleaning. Furthermore, the end caps are removable, and the filter screen can be easily removed via a handle for thorough cleaning or replacement. This design ensures normal flow and filtration quality of the chemical liquid during filtration, eliminates the need to disassemble numerous parts during cleaning, saves time and manpower, improves equipment efficiency, reduces maintenance costs, and guarantees the continuity and stability of the chemical production process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the pipeline filter;

[0018] Figure 2 This is a schematic diagram of the internal structure of the filter;

[0019] Figure 3 A schematic diagram of the filter washing and cleaning mechanism.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Pipeline filter; 11. Filter tank; 12. Inlet port; 13. Handle; 14. End cap; 15. Filter cylinder frame; 16. Outlet port; 17. Fixing ring; 18. Sealing ring; 19. Bottom cover; 110. Filter screen cylinder; 2. Filter screen flushing and cleaning mechanism; 21. Water tank; 22. Direct spray nozzle; 23. Angled spray nozzle; 24. Infusion pipe; 25. Water pump; 26. Suction pipe. Detailed Implementation

[0022] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.

[0023] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0024] Example 1: A chemical pipeline filter with an easy-to-clean filter screen, comprising a pipeline filter 1, wherein a filter screen washing and cleaning mechanism 2 is fixedly installed at the rear end of the pipeline filter 1. The pipeline filter 1 includes a filter tank 11, which is made of stainless steel and has good corrosion resistance. Its inner diameter is 200mm and its length is 500mm. A filter screen cylinder 110 is snapped and fixed inside the filter tank 11. The filter screen cylinder 110 is cylindrical, made of 316L stainless steel, with an outer diameter of 180mm and a length of 400mm. The filter pore size of the filter screen cylinder 110 is 50 micrometers. An inlet port 12 and an outlet port 16 are fixed on the left and right sides of the filter tank 11, respectively. Both the inlet port 12 and the outlet port 16 are connected by flanges with a nominal diameter of DN50. A bottom cover 19 is bolted to the rear end of the filter tank 11. A rubber sealing gasket is provided between the bottom cover 19 and the filter tank 11 to ensure airtightness. The front end of the filter tank 11 is locked with an end cap 14 via a quick-locking mechanism, facilitating the removal and installation of the end cap 14. The filter screen washing and cleaning mechanism 2 includes a water tank 21 fixed to the rear side wall of the filter tank 11. The water tank 21 is a cuboid structure with dimensions of 300mm × 300mm × 400mm, made of plastic, and has a certain degree of transparency for easy observation of the water level. A water pump 25 is fixed to the left side wall of the water tank 21. The water pump 25 is a centrifugal pump with a flow rate of 5m³ / h and a head of 10m. The water pump 25 is connected to an infusion pipe 24 via a connector. The infusion pipe 24 is a stainless steel pipe with an outer diameter of 10mm. A section of the infusion tube 24, away from the water pump 25, extends into the inner cavity of the filter tank 11 and is connected to a direct-spray nozzle 22. The direct-spray nozzle 22 is a fan-shaped nozzle with a spray angle of 30°. Two sets of oblique-spray nozzles 23 are fixedly connected in a ring array on the outer surface of the infusion tube 24. Each set of oblique-spray nozzles 23 has three nozzles. The front set of oblique-spray nozzles 23 forms a 25° angle with the axis of the infusion tube 24, and the rear set forms a 45° angle with the axis of the infusion tube 24. The spray ports of the oblique-spray nozzles 23 all face the inner wall of the filter tank 11, while the spray ports of the direct-spray nozzles 22 face the filter holes on the rear side wall of the filter screen cylinder 110. A fixing ring 17, made of stainless steel, is fixedly connected to the front of the inner cavity of the filter tank 11 and welded to it. The front end face of the filter cylinder 110 is fixedly connected to a filter cylinder frame 15. The filter cylinder frame 15 has an annular structure and is made of the same material as the filter cylinder 110. A handle 13 is fixedly connected inside the filter cylinder frame 15. The handle 13 has a U-shaped structure and is made of stainless steel, which facilitates the removal of the filter cylinder 110 from the filter canister 11. The rear end face of the end cap 14 is in close contact with the front end of the handle 13. The handle 13 allows the filter cylinder frame 15 and the fixing ring 17 to abut against each other, thereby fixing the filter cylinder 110.The outer surface of the filter cylinder 110 has a 10mm gap with the inner wall of the filter tank 11, allowing liquid to flow. The inner port of the inlet port 12 is located 50mm in front of the front port of the filter cylinder 110, and the inner port of the outlet port 16 is located 50mm behind the front port of the filter cylinder 110. A through hole with a diameter of 12mm is provided in the central area of ​​the bottom cover 19 for the infusion pipe 24 to pass through. A sealing ring 18 made of rubber is fixed inside the through hole to prevent liquid leakage. The pump 25's suction port is connected to a suction pipe 26 that extends into the water tank 21 via a connector. The suction pipe 26 is a plastic flexible tube with a length of 500mm. A level sensor, a float-type level sensor, is installed on the inner wall of the water tank 21 to monitor the liquid level in the water tank 21 in real time. A liquid replenishment port is fixed on the front side wall of the water tank 21. The liquid replenishment port adopts a threaded connection method, which facilitates the connection of the liquid replenishment pipe for liquid replenishment.

[0025] Example 2: A chemical pipeline filter with an easy-to-clean filter screen, comprising a pipeline filter 1, wherein a filter screen washing and cleaning mechanism 2 is fixedly installed at the rear end of the pipeline filter 1. The pipeline filter 1 includes a filter tank 11, which is made of carbon steel with anti-corrosion treatment on the surface, and has an inner diameter of 250mm and a length of 600mm. A filter screen cylinder 110 is snapped and fixed inside the filter tank 11. The filter screen cylinder 110 is cylindrical, made of 304 stainless steel, and has an outer diameter of 220mm and a length of 500mm. The filter pore diameter of the filter screen cylinder 110 is 80 micrometers. An inlet port 12 and an outlet port 16 are fixed on the left and right sides of the filter tank 11, respectively. Both the inlet port 12 and the outlet port 16 are welded together. A bottom cover 19 is fixedly connected to the rear end of the filter tank 11 by a clamp made of stainless steel, which is secure and easy to disassemble. An end cover 14 is locked to the front end of the filter tank 11 by a spring lock for easy operation.

[0026] The filter screen washing and cleaning mechanism 2 includes a water tank 21 fixed to the rear side wall of the filter tank 11. The water tank 21 is a cylindrical structure with a diameter of 350mm and a height of 450mm, made of fiberglass, which has high strength and corrosion resistance. A water pump 25 is fixed to the left side wall of the water tank 21. The water pump 25 is a self-priming pump with a flow rate of 8m³ / h and a head of 12m. The water pump 25 is connected to an infusion pipe 24 via a connector. The infusion pipe 24 is a copper pipe with an outer diameter of 12mm. A section of the infusion tube 24, away from the water pump 25, extends into the inner cavity of the filter tank 11 and is connected to a direct-spray nozzle 22. The direct-spray nozzle 22 is a conical nozzle with a spray angle of 25°. Two sets of oblique-spray nozzles 23 are fixedly connected in a ring array on the outer surface of the infusion tube 24. Each set of oblique-spray nozzles 23 has four nozzles. The front set of oblique-spray nozzles 23 forms a 20° angle with the axis of the infusion tube 24, and the rear set forms a 30° angle with the axis of the infusion tube 24. The spray ports of the oblique-spray nozzles 23 all face the inner wall of the filter tank 11, while the spray ports of the direct-spray nozzles 22 face the filter holes on the rear side wall of the filter screen cylinder 110. A fixing ring 17, made of carbon steel, is fixedly connected to the front of the inner cavity of the filter tank 11 by bolts. The filter cylinder 110 has a filter cylinder frame 15 fixedly connected to its front end face. The filter cylinder frame 15 is annular in structure and made of the same material as the filter cylinder 110. A handle 13 is fixedly connected inside the filter cylinder frame 15. The handle 13 is annular in structure and made of stainless steel, making it easy for operators to grip and remove the filter cylinder 110. The rear end face of the end cap 14 is in close contact with the front end of the handle 13. The handle 13 allows the filter cylinder frame 15 and the fixing ring 17 to abut against each other, ensuring the stability of the filter cylinder 110. There is a 15mm gap between the outer surface of the filter cylinder 110 and the inner wall of the filter tank 11, which meets the liquid flow requirements. The inner port of the liquid inlet port 12 is located 60mm in front of the front port of the filter cylinder 110, and the inner port of the liquid outlet port 16 is located 60mm behind the front port of the filter cylinder 110. The bottom cover 19 has a through hole in its central area for the infusion tube 24 to pass through. The diameter of the through hole is 14mm, and a sealing ring 18 made of polytetrafluoroethylene (PTFE) is fixed inside the through hole, providing good sealing performance and corrosion resistance. The pump 25's suction port is connected via a connector to a suction tube 26 that extends into the water tank 21. The suction tube 26 is a rubber hose with a length of 600mm. A level sensor is installed on the inner side wall of the water tank 21. The level sensor is a capacitive level sensor with high measurement accuracy. A replenishment port is fixed on the front side wall of the water tank 21. The replenishment port uses a quick-connect coupling for easy connection to replenishment equipment.

[0027] Example 3: A chemical pipeline filter with an easy-to-clean filter screen, comprising a pipeline filter 1, wherein a filter screen washing and cleaning mechanism 2 is fixedly installed at the rear end of the pipeline filter 1. The pipeline filter 1 includes a filter tank 11, which is made of titanium alloy and has excellent corrosion resistance. Its inner diameter is 300 mm and its length is 700 mm. A filter screen cylinder 110 is snapped and fixed inside the filter tank 11. The filter screen cylinder 110 is cylindrical, made of titanium alloy, with an outer diameter of 270 mm and a length of 600 mm. The filter pore size of the filter screen cylinder 110 is 100 micrometers. An inlet port 12 and an outlet port 16 are fixed on the left and right sides of the filter tank 11, respectively. Both the inlet port 12 and the outlet port 16 are connected by a compression fitting, and their nominal diameter is DN100. A bottom cover 19 is fixedly connected to the rear end of the filter tank 11 via a flange, and the flange connection is reliable in sealing. The front end of the filter tank 11 is connected to the end cap 14 by a latch. The latch is a pin-type latch, which is simple in structure and easy to operate.

[0028] The filter screen rinsing and cleaning mechanism 2 includes a water tank 21 fixed to the rear side wall of the filter tank 11. The water tank 21 is a cuboid structure with dimensions of 400mm × 400mm × 500mm, made of stainless steel, and has a polished surface. A water pump 25 is fixed to the left side wall of the water tank 21. The water pump 25 is a metering pump with a flow rate of 10m³ / h and a head of 15m, which can precisely control the flow rate of the rinsing liquid. The water pump 25 is connected to an infusion pipe 24 via a connector. The infusion pipe 24 is a stainless steel pipe with an outer diameter of 15mm. The section of the infusion tube 24 away from the water pump 25 extends into the inner cavity of the filter tank 11 and is connected to a direct-spray nozzle 22. The direct-spray nozzle 22 is a solid conical nozzle with a spray angle of 20°. Two sets of oblique-spray nozzles 23 are fixedly connected in a ring array on the outer surface of the infusion tube 24. Each set of oblique-spray nozzles 23 has five nozzles. The front set of oblique-spray nozzles 23 forms a 35° angle with the axis of the infusion tube 24, and the rear set forms a 60° angle with the axis of the infusion tube 24. The spray ports of the oblique-spray nozzles 23 all face the inner cavity sidewall of the filter tank 11, while the spray ports of the direct-spray nozzles 22 face the filter holes on the rear sidewall of the filter screen cylinder 110. A fixing ring 17, made of titanium alloy, is fixedly connected to the front of the inner cavity of the filter tank 11 and welded to it. The front end face of the filter cylinder 110 is fixedly connected to a filter cylinder frame 15. The filter cylinder frame 15 has a ring structure and is made of the same material as the filter cylinder 110. A handle 13 is fixedly connected inside the filter cylinder frame 15. The handle 13 has a square structure and is made of titanium alloy, which is high in strength and corrosion resistant. The rear end face of the end cap 14 is in close contact with the front end of the handle 13. The handle 13 allows the filter cylinder frame 15 and the fixing ring 17 to abut against each other, ensuring the installation stability of the filter cylinder 110.

[0029] The outer surface of the filter screen cylinder 110 has a 20mm gap with the inner wall of the filter tank 11 to ensure smooth liquid flow. The inner port of the liquid inlet port 12 is located 70mm in front of the front port of the filter screen cylinder 110, and the inner port of the liquid outlet port 16 is located 70mm behind the front port of the filter screen cylinder 110. A through hole with a diameter of 17mm is provided in the central area of ​​the bottom cover 19 for the liquid delivery pipe 24 to pass through. The through hole is filled and fixed with a sealing ring 18, which is made of fluororubber and has excellent high temperature resistance and corrosion resistance. The liquid pump 25 is connected to the pumping port via a connector to a liquid extraction pipe 26 that penetrates into the water tank 21. The liquid extraction pipe 26 is a Teflon flexible tube with a length of 700mm and excellent chemical corrosion resistance. A liquid level sensor is installed on the inner wall of the water tank 21. The liquid level sensor is an ultrasonic liquid level sensor, which can realize non-contact liquid level measurement. A liquid replenishment port is fixed on the front side wall of the water tank 21. The liquid replenishment port adopts a flange connection method, which facilitates a reliable connection with the liquid replenishment system.

[0030] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows:

[0031] Under normal filtration conditions, the chemical liquid containing impurities enters the inner cavity of the filter tank 11 of the pipeline filter 1 through the inlet port 12. Since the inner port of the inlet port 12 is located in front of the front end port of the filter screen cylinder 110, the chemical liquid first enters the area in the inner cavity of the filter tank 11 in front of the front end port of the filter screen cylinder 110. Then, under pressure, the chemical liquid passes through the filter holes of the filter screen cylinder 110, and the impurities are intercepted inside the filter screen cylinder 110. The filtered chemical liquid then enters the space between the filter screen cylinder 110 and the inner wall of the filter tank 11. The liquid flows out from the outlet port 16 in the gap area. Because the inner port of the outlet port 16 is located behind the front port of the filter screen cylinder 110, it ensures that only the filtered liquid can be discharged. When the filter screen cylinder 110 needs to be cleaned, the water pump 25 in the filter screen rinsing and cleaning mechanism 2 is started. The water pump 25 draws rinsing liquid from the water tank 21 through the liquid extraction pipe 26. The liquid level sensor on the inner wall of the water tank 21 can monitor the liquid level in the water tank 21 in real time. When the liquid level is lower than the set value, liquid can be replenished through the liquid replenishment port on the front side wall of the water tank 21.

[0032] Pump 25 pumps the extracted flushing liquid through infusion pipe 24 into the inner cavity of filter tank 11. The flushing liquid first reaches the direct spray nozzle 22, whose spray port faces the filter holes on the rear side wall of filter screen cylinder 110, spraying the flushing liquid onto the filter holes of filter screen cylinder 110 at a certain pressure and angle, directly flushing the filter holes and flushing out the impurities clogging the filter holes. At the same time, two sets of oblique spray nozzles 23, fixedly connected in a ring array on the outer surface of infusion pipe 24, also start working. The front set of oblique spray nozzles 23 has an angle of 20-35° with the axis of infusion pipe 24, and the rear set of oblique spray nozzles 23... The angled nozzles 23 and the infusion tube 24 have an angle of 30-60° between their axes, and the spray ports of the angled nozzles 23 are all facing the inner wall of the filter tank 11. These angled nozzles 23 spray the rinsing liquid onto the inner wall of the filter tank 11 to rinse the side wall and prevent impurities from accumulating on the side wall. At the same time, the rinsing liquid forms a certain vortex in the filter tank 11, which further scours the filter screen cylinder 110. During the rinsing process, the bottom cover 19 at the rear end of the filter tank 11 plays a sealing role. The sealing ring 18 filled in the through hole in the central area of ​​the bottom cover 19 can prevent the rinsing liquid from leaking.

[0033] If it is necessary to replace or remove the filter cylinder 110, first open the end cap 14 at the front end of the filter tank 11. The end cap 14 is locked to the front end of the filter tank 11 by a latch. Open the latch to remove the end cap 14. The rear end face of the end cap 14 is in close contact with the front end of the handle 13. The filter cylinder 110 can be easily removed from the filter tank 11 by the handle 13. The filter cylinder frame 15, which is fixedly connected to the front end face of the filter cylinder 110, and the fixing ring 17, which is fixedly connected to the front side of the inner cavity of the filter tank 11, abut against each other, which serves to fix the filter cylinder 110. After removing the filter cylinder 110, it can be cleaned more thoroughly or a new filter cylinder 110 can be replaced. After cleaning or replacement, put the filter cylinder 110 back into the filter tank 11, so that the filter cylinder frame 15 abuts against the fixing ring 17, and then lock the end cap 14 by the latch. Then you can continue to perform filtration or rinsing operations.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A chemical pipeline filter with an easy-to-clean filter screen, comprising a pipeline filter (1), characterized in that: The rear end of the pipeline filter (1) is fixedly equipped with a filter screen washing and cleaning mechanism (2). The pipeline filter (1) includes a filter tank (11), a filter screen cylinder (110) snapped and fixed in the inner cavity of the filter tank (11), and an inlet port (12) and an outlet port (16) respectively fixed on the left and right sides of the filter tank (11). The rear end port of the filter tank (11) is fixedly connected to a bottom cover (19), and the front end port of the filter tank (11) is locked with an end cover (14) by a latch. The filter washing and cleaning mechanism (2) includes a water tank (21) fixed on the rear side wall of the filter tank (11), a water pump (25) fixed on the left side wall of the water tank (21), and an infusion pipe (24) connected to the output end of the water pump (25) through a connector. A section of the infusion pipe (24) away from the water pump (25) passes through the inner cavity of the filter tank (11) and is connected to a direct spray nozzle (22). Two sets of oblique spray nozzles (23) are fixedly connected in a ring array on the outer surface of the infusion pipe (24).

2. A chemical pipeline filter with an easy-to-clean filter screen according to claim 1, characterized in that: A fixing ring (17) is fixedly connected to the front side of the inner cavity of the filter tank (11), and a filter cylinder frame (15) is fixedly connected to the front end face of the filter screen cylinder (110), and a handle (13) is fixedly connected inside the filter cylinder frame (15).

3. A chemical pipeline filter with an easy-to-clean filter screen according to claim 1, characterized in that: The rear end face of the end cap (14) is in close contact with the front end of the handle (13), so that the filter cylinder frame (15) and the fixing ring (17) can be pressed against each other by the handle (13).

4. A chemical pipeline filter with an easy-to-clean filter screen according to claim 1, characterized in that: The outer surface of the filter cylinder (110) and the inner wall of the filter tank (11) have a gap for liquid flow.

5. A chemical pipeline filter with an easy-to-clean filter screen according to claim 1, characterized in that: The inner port of the liquid inlet port (12) is located in front of the front port of the filter cylinder (110), and the inner port of the liquid outlet port (16) is located behind the front port of the filter cylinder (110).

6. A chemical pipeline filter with an easy-to-clean filter screen according to claim 1, characterized in that: The bottom cover (19) has a through hole in the central area for the infusion tube (24) to pass through, and a sealing ring (18) is fixed inside the through hole.

7. A chemical pipeline filter with an easy-to-clean filter screen according to claim 1, characterized in that: The pump (25) has a pumping port connected to a pumping pipe (26) that extends into the water tank (21) via a connector.

8. A chemical pipeline filter with an easy-to-clean filter screen according to claim 1, characterized in that: A liquid level sensor is installed on the inner wall of the water tank (21), and a liquid replenishment port is fixed on the front side wall of the water tank (21).

9. A chemical pipeline filter with an easy-to-clean filter screen according to claim 1, characterized in that: The set of oblique nozzles (23) on the front side has an angle of 20-35° with the axis of the infusion tube (24), and the set of oblique nozzles (23) on the rear side has an angle of 30-60° with the axis of the infusion tube (24). The spray ports of the oblique nozzles (23) are all facing the inner wall of the filter tank (11), and the spray ports of the straight nozzles (22) are facing the filter holes on the rear side wall of the filter screen cylinder (110).

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