Nozzle anti-clogging device

Abstract

A nozzle anti-clogging device comprises: a mounting tube, a sliding tube, and a filter assembly; the sliding tube is slidably and sealingly mounted inside the mounting tube and is elastically connected by a No. 1 spring; at least one filter assembly is provided, with each two adjacent filter assemblies fixedly connected, and the filter assembly at the front end is fixedly connected to the sliding tube; a plurality of water inlet grooves penetrating the sliding tube are provided on the side wall of the sliding tube; an outlet pipe is fixedly mounted on the mounting tube, one end of the outlet pipe extends to the outside of the mounting tube, and a valve is fixedly mounted; the blocking body and the filter assembly are both sleeved on the outlet pipe and fit with the gap of the outlet pipe; a disc is fixedly mounted on the outlet pipe, and a guide pipe is fixedly mounted on the filter assembly at the end; the diameter of the guide pipe outlet end is not greater than the diameter of the disc; when the filter assembly is clogged, the present invention can automatically reversely flush the filter assembly, and discharge the sewage after flushing through the outlet pipe, and automatically reset after flushing is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of atomizing devices, and in particular to a nozzle anti-clogging device. Background Art

[0002] An atomizing nozzle is a device that can spray liquid into atomized form and evenly suspend it in the air. The atomizing nozzle is prone to clogging during use, which reduces the atomization effect. The atomizing nozzle and the pipes connected to it need to be disassembled for cleaning, which is a cumbersome operation. For this reason, the present invention proposes a nozzle anti-clogging device that filters water before it enters the atomizing nozzle to prevent the atomizing nozzle from clogging. Summary of the Invention

[0003] The technical solution used in the present invention is: a nozzle anti-clogging device, comprising: a mounting tube, a sliding tube, and a filter assembly; the sliding tube is slidably and sealingly mounted inside the mounting tube and elastically connected via a No. 1 spring; a blocking body is fixedly mounted at the front end of the sliding tube, and the blocking body seals the front end of the sliding tube; the filter assembly is provided in at least one group, with each adjacent two filter assemblies fixedly connected, and the filter assembly at the front end is fixedly connected to the sliding tube; a plurality of water inlet grooves penetrating the sliding tube are formed on the side wall of the sliding tube, and each of the water inlet grooves is located in the same plane;

[0004] A water outlet pipe is fixedly mounted on the mounting pipe, one end of which extends to the outside of the mounting pipe and is fixedly mounted with a valve; a plurality of through holes are opened on the side wall of the water outlet pipe; the blocking body and the filter assembly are both sleeved on the water outlet pipe and slideably engaged with the water outlet pipe;

[0005] A disc is fixedly mounted on the water outlet pipe, and a guide tube is fixedly mounted on the filter assembly at the end, and the guide tube is slidably mounted on the mounting tube; the diameter of the outlet end of the guide tube is not greater than the diameter of the disc;

[0006] At least one group of water inlet holes is provided on the inner wall of the mounting tube, and each group of the water inlet holes includes two water inlet holes; the two water inlet holes are interconnected; a cleaning water inlet hole and a cleaning water outlet hole are provided on the inner wall of the mounting tube, the cleaning water inlet hole is located at the rear end of the water inlet hole group, and the cleaning water outlet hole is located at the rear end of the cleaning water inlet hole.

[0007] Furthermore, an annular groove is provided on the sliding tube, and each of the water inlet grooves is provided on the bottom surface of the annular groove.

[0008] Furthermore, a blocking tube is slidably installed inside the water outlet pipe, one end of the blocking tube is elastically connected to the water outlet pipe through a No. 2 spring, and the other end is fixedly installed with a blocking disk, the diameter of the blocking disk is larger than the inner diameter of the water outlet pipe; a No. 2 through hole is opened on the side wall of the blocking tube, which respectively matches each through hole on the water outlet pipe.

[0009] Furthermore, the blocking disk is provided with at least one auxiliary through hole penetrating the front and rear end surfaces of the blocking disk.

[0010] Furthermore, a blocking tube is plugged in and out of the rear end of the mounting tube, and the sliding tube is elastically connected to the blocking tube via a No. 1 spring; the guide tube is slidably mounted on the blocking tube.

[0011] Furthermore, the filter assembly includes: a filter plate mounting ring; a filter plate is fixedly installed in the filter plate mounting ring, and the filter plate is sleeved on the water outlet pipe and is gap-fitted with the water outlet pipe; each two adjacent filter plate mounting rings are fixedly connected by threads, the filter plate mounting ring at the front end is fixedly connected to the sliding tube, and the filter plate mounting ring at the end is fixedly connected to the guide tube.

[0012] Furthermore, a connecting hole is provided on the mounting tube, and the cleaning water inlet hole and the cleaning water outlet hole are connected through the connecting hole; an auxiliary cleaning pipe is fixedly installed on the blocking tube, one end of the auxiliary cleaning pipe is connected to the inside of the connecting hole, and the other end is fixedly connected to the rear end of the outlet pipe; the disc is fixedly installed on the auxiliary cleaning pipe.

[0013] Furthermore, an auxiliary water outlet pipe is provided in the installation pipe, one end of the auxiliary water outlet pipe is fixedly connected to the front end of the water outlet pipe, and the other end passes through the side wall of the installation pipe to reach the outside of the installation pipe, and a valve is fixedly installed thereon; the blocking body is sleeved on the outside of the auxiliary water outlet pipe and is gap-matched with the auxiliary water outlet pipe.

[0014] Furthermore, a plurality of flushing holes are provided on the side wall of each filter plate mounting ring.

[0015] Furthermore, a one-way valve is fixedly installed in the cleaning water outlet hole, and the conducting direction of the one-way valve is toward the inside of the installation pipe; a liquid pressure sensor is fixedly installed on the upper end of the cleaning water inlet hole.

[0016] Since the present invention adopts the above technical solution, the beneficial effects of the present invention are as follows: the present invention uses the filter component to filter the water flow before entering the nozzle, filters out particulate impurities in the water flow, and prevents the nozzle from being blocked; in addition, when the filter component is blocked, the present invention can automatically reversely flush the filter component by cleaning the water inlet hole, the water outlet hole and the outlet pipe, and discharge the sewage through the outlet pipe after the flushing is completed, and automatically reset after the flushing is completed to continue supplying water to the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1-2 This is a schematic cross-sectional view of the overall structure of Example 1 of the present invention.

[0018] Figure 3 This is a schematic cross-sectional view of the overall structure of Example 2 of the present invention.

[0019] Figure 4 It is a schematic diagram of the internal structure of the present invention.

[0020] Figure 5 This is a schematic diagram of the connection relationship between the water outlet pipe and the auxiliary cleaning pipe of the present invention.

[0021] Figure 6 This is a schematic diagram of the connection between the water outlet pipe and the blocking pipe of the present invention.

[0022] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure in the middle.

[0023] Figure 8 This is a schematic diagram of the connection relationship between the filter plate mounting ring and the filter plate of the present invention.

[0024] Figure 9 This is a cross-sectional view of the connection between the filter plate mounting ring and the filter plate of the present invention.

[0025] Figure 10 This is a schematic diagram of the structure of the present invention connected to the two-fluid nozzle.

[0026] Figure 11 This is a schematic cross-sectional view of the present invention connected to a two-fluid nozzle.

[0027] Figure markings: mounting tube-2; sliding tube-3; water outlet pipe-4; blocking body-5; filter assembly-6; disc-7; guide tube-8; blocking tube-9; auxiliary cleaning tube-10; auxiliary water outlet pipe-11; one-way valve-12; liquid pressure sensor-13; water inlet hole-21; cleaning water inlet hole-22; cleaning water outlet hole-23; water inlet trough-31; blocking tube-41; filter plate mounting ring-61; filter plate-62. DETAILED DESCRIPTION

[0028] Example 1, as Figure 1-9 As shown, a nozzle anti-clogging device comprises: a mounting tube 2, a sliding tube 3, and a filter assembly 6; the sliding tube 3 is slidably and sealingly installed inside the mounting tube 2 and is elastically connected by a No. 1 spring; in this embodiment, the sliding tube 3 has a diameter of 50 mm; a blocking body 5 is fixedly installed at the front end of the sliding tube 3, and the blocking body 5 seals the front end of the sliding tube 3; according to actual filtering requirements, the filter assembly 6 is provided with multiple groups. In order to clearly illustrate the present technical solution, in this embodiment, the filter assembly 6 is provided with five groups, and each two adjacent filter assemblies 6 are fixedly connected, and the front end filter assembly 6 is fixedly connected to the sliding tube 3; a plurality of water inlet grooves 31 that pass through the sliding tube 3 are provided on the side wall of the sliding tube 3, and each water inlet groove 31 is located in the same plane and is provided on the sliding tube 3 in a circular array with one point on the axis of the sliding tube 3 as the center of the circle; the front end of the mounting tube 2 is sealed and fixedly connected to the water inlet pipe, and the rear end is sealed and fixedly connected to the nozzle;

[0029] An outlet pipe 4 is fixedly mounted on the mounting pipe 2. In this embodiment, the outlet pipe 4 has a diameter of 20 mm. One end of the outlet pipe 4 extends to the outside of the mounting pipe 2 and is fixedly mounted with a valve. A plurality of through-holes are formed on the sidewall of the outlet pipe 4. The blocking body 5 and the filter assembly 6 are both sleeved on the outlet pipe 4 and slideably engage with the outlet pipe 4. In this embodiment, the gap size used is 0.02 mm. This design ensures relative sliding between the blocking body 5 and the filter assembly 6 and the outlet pipe 4, while also ensuring a high degree of sealing.

[0030] A disc 7 is fixedly mounted on the outlet pipe 4, and a guide pipe 8 is fixedly mounted on the filter assembly 6 at the end. The guide pipe 8 is slidably mounted on the mounting pipe 2; the diameter of the outlet end of the guide pipe 8 is not greater than the diameter of the disc 7;

[0031] The inner wall of the mounting tube 2 is provided with three groups of water inlet holes with one point of the axis of the mounting tube 2 as the center of the circle. The angle between each two adjacent groups of water inlet holes is 60 degrees. Each group of water inlet holes includes two water inlet holes 21. The two water inlet holes 21 are interconnected and arranged one in front of the other in the direction of the axis of the mounting tube 2. A cleaning water inlet hole 22 and a cleaning water outlet hole 23 are provided on the inner wall of the mounting tube 2. The cleaning water inlet hole 22 is located at the rear end of the water inlet hole group, and the cleaning water outlet hole 23 is located at the rear end of the cleaning water inlet hole 22. When the nozzle sprays water outward, the water The water flows into the front end of the installation pipe 2, enters through the water inlet hole 21 at the front end, flows out from the water inlet 21 at the rear end to the water inlet groove 31 provided on the sliding pipe 3, flows into the interior of the sliding pipe 31 through the water inlet groove 31, and then flows to the nozzle after being filtered by the filter assembly 6. During this process, since the water entering the front end of the installation pipe 2 can flow out normally through the filter assembly 6, the No. 1 spring will not be fully compressed, so the water can normally enter from the water inlet hole 21 at the front end and flow out from the water inlet hole 21 at the rear end;

[0032] When the filter assembly 6 is blocked, water cannot flow out through the filter assembly 6. At this time, due to the inability of water to flow out, the water pressure at the front end of the blocking body 5 increases, thereby overcoming the resistance of the spring, causing the sliding tube 3 to move toward the rear end of the installation tube. In the process of the sliding tube 3 moving backward, the filter assembly 6 and the guide tube 8 are driven to move backward. When the guide tube 8 contacts the disc 7, the rear end of the guide tube 8 is blocked by the disc 7, and the front end of the sliding tube 3 no longer blocks the cleaning water inlet 22, and water enters from the cleaning water inlet 22. At the same time, the position of the water inlet groove 31 on the sliding tube 3 moves backward, and the water can no longer flow into the sliding tube 3 from the rear end water inlet 21 through the water inlet groove 31. That is, at this time, the water can only flow into the cleaning water inlet hole 22, and the water enters through the cleaning water inlet hole 22, flows out from the cleaning water outlet hole 23, enters the interior of the installation tube 2, and flushes the filter assembly 6. The flushed sewage flows into the interior of the outlet pipe 4 from the through hole on the outlet pipe 4, and then flows out;

[0033] The valve is a manual valve. When the personnel observe that the nozzle cannot spray water, the valve is opened, and the valve is closed when the sewage flowing out of the outlet pipe 4 becomes clear.

[0034] After the flushing on the filter assembly 6 is completed, that is, when the sewage after cleaning flows out from the outlet pipe 4, the pressure at the front end of the blocking body 5 is reduced because there is an outlet for the water flow. Under the action of the No. 1 spring, the sliding pipe 3 moves forward, that is, moves toward the inlet end of the installation pipe 2, until the water inside the water inlet hole 21 at the rear end can flow into the sliding pipe 3 through the water inlet groove 31 on the sliding pipe 3, and at this time the cleaning water inlet hole 22 is blocked by the sliding pipe 3, and the water flow cannot enter from the cleaning water inlet hole 22, and can only enter the sliding pipe 3 from the water inlet hole 21, completing the flushing of the filter assembly; the water flows through the water inlet hole 21 and the water inlet groove 31 on the sliding pipe 3 into the sliding pipe 3, and then reaches the nozzle after being filtered by the filter assembly 6 and is sprayed out by the nozzle;

[0035] Specifically, in order to allow water to flow more easily from the water inlet hole 21 through the water inlet groove 31 into the interior of the sliding tube 3, an annular groove is provided on the sliding tube 3, and each water inlet groove 31 is provided on the bottom surface of the annular groove; after flowing out through the water inlet hole 21 at the rear end, the water flows into the annular groove on the sliding tube 3, and then enters the interior of the water inlet pipe 3 through the water inlet groove 31, thereby increasing the flow rate of water entering the interior of the sliding tube 3.

[0036] Specifically, in order to simultaneously clean the water outlet pipe 4, a blocking tube 41 is slidably installed inside the water outlet pipe 4, one end of the blocking tube 41 is elastically connected to the water outlet pipe 4 by a No. 2 spring, and the other end is fixedly installed with a blocking disk, the diameter of which is larger than the inner diameter of the water outlet pipe 4; a No. 2 through hole is provided on the side wall of the blocking tube 41, which respectively matches each through hole on the water outlet pipe 4; a plurality of auxiliary through holes are provided on the blocking disk, which pass through the front and rear end faces of the blocking disk; after the water flow enters from the cleaning water inlet 22, under the action of water pressure, the blocking tube 41 overcomes the elastic force of the No. 2 spring and moves toward the front end of the water outlet pipe 4, so that the No. 2 through hole on the blocking tube 41 is aligned with the through hole on the water outlet pipe 4, so that the sewage after flushing the filter assembly 6 flows out through the through hole on the water outlet pipe 4; at the same time, part of the water flow flows into the inside of the blocking tube 41 through the auxiliary through holes on the blocking disk, so that the sewage inside the water outlet pipe 4 can be better discharged.

[0037] Specifically, a blocking tube 9 is plugged in and out of the rear end of the mounting tube 2 , and the sliding tube 3 is elastically connected to the blocking tube 9 via a spring No. 1; the guide tube 8 is slidably mounted on the blocking tube 9 .

[0038] Specifically, the filter assembly 6 includes: a filter plate mounting ring 61; a filter plate 62 is fixedly installed in the filter plate mounting ring 61, and the filter plate 62 is sleeved on the water outlet pipe 4 and has a clearance fit with the water outlet pipe 4; each adjacent two filter plate mounting rings 61 are fixedly connected by threads, the front filter plate mounting ring 61 is fixedly connected to the sliding tube 3, and the end filter plate mounting ring 61 is fixedly connected to the guide tube 8; when a certain filter plate 62 needs to be replaced, the corresponding filter plate mounting ring 61 is rotated and removed, and a new filter plate mounting ring 61 is replaced.

[0039] Specifically, a connecting hole is provided on the mounting tube 2, and the cleaning water inlet hole 22 and the cleaning water outlet hole 23 are connected through the connecting hole; an auxiliary cleaning pipe 10 is fixedly installed on the blocking tube 9, one end of the auxiliary cleaning pipe 10 is connected to the inside of the connecting hole, and the other end is fixedly connected to the rear end of the outlet pipe 4; the disc 7 is fixedly installed on the auxiliary cleaning pipe 10; each group of water inlet holes also includes a No. 2 connecting hole, and the No. 2 connecting hole is provided on the mounting tube 2, and the two water inlet holes 21 are connected through the No. 2 connecting hole; after the water flows into the cleaning water inlet hole 22, part of the water flows into the auxiliary cleaning pipe 10, and pushes the blocking tube 41 to move through the auxiliary cleaning pipe 10.

[0040] Specifically, an auxiliary water outlet pipe 11 is provided in the mounting pipe 2, one end of the auxiliary water outlet pipe 11 is fixedly connected to the front end of the water outlet pipe 4, and the other end passes through the side wall of the mounting pipe 2 to reach the outside of the mounting pipe 2, and is fixedly installed with a valve; the blocking body 5 is sleeved on the outside of the auxiliary water outlet pipe 11, and is loosely matched with the auxiliary water outlet pipe 11; a number of flushing holes are opened on the side wall of each filter plate mounting ring 61; the water flow entering from the cleaning water inlet hole 22 flushes the filter plate 62 through the flushing holes on the side wall of the filter plate mounting ring 61, and each flushing hole is inclined toward the filter plate 62.

[0041] Example 2, as Figure 3 As shown, the difference from the above-mentioned embodiment 1 is that a one-way valve 12 is fixedly installed in the cleaning water outlet 23, and the conduction direction of the one-way valve 12 is toward the inside of the mounting tube 2; a liquid pressure sensor 13 is fixedly installed on the upper end of the cleaning water inlet 22, and the specific model is: OMEGA-PX190; the valve is an electromagnetic valve; when the filter component is blocked, under the action of water pressure, the sliding tube 3 moves toward the rear end of the mounting tube through the blocking body 5 until the water inlet hole 21 at the rear end is no longer connected with the water inlet groove 31 on the water inlet pipe 3, and the water inlet pipe 3 no longer blocks the cleaning water inlet hole 22 (at this time, the guide tube 8 is in contact with the disc 7), and water flows into the cleaning water inlet hole 22 and flows into the guide tube 2 through the one-way valve 12 on the cleaning water outlet 23. At this time, the liquid pressure sensor 13 senses the pressure, the solenoid valve opens, and water flows out of the one-way valve 12, flushing the filter plate 62. The flushed sewage flows into the outlet pipe 4 through the through-holes on the outlet pipe 4 and is discharged from the outlet pipe 4. After the filter plate 62 is cleaned, that is, after the water flows out of the outlet pipe 4, the water pressure at the front end of the blocking body 5 decreases (the water has an outlet, resulting in a decrease in water pressure). Under the action of the No. 1 spring, the sliding pipe 3 moves back to the front end of the mounting pipe 2. The cleaning water inlet 23 is now blocked by the water inlet pipe 3 again. The water in the connecting hole flows into the outlet pipe 4 through the auxiliary through-holes on the blocking disk and out of the outlet pipe 4. At this time, the liquid pressure sensor 13 cannot sense the pressure. Under the control of the controller, the valve is closed with a delay of 3 seconds. The one-way valve 12 prevents water from entering the connecting hole when the filter plate 62 is not blocked, causing the liquid pressure sensor 13 to sense the pressure, thereby causing water to flow out of the outlet pipe 4, resulting in a decrease in pressure at the nozzle, resulting in insufficient nozzle pressure and wasting water resources.

[0042] Specifically, the device can be used for single-fluid nozzles or spray guns, and can also be used for dual-fluid nozzles or spray guns (such as Figure 10-11As shown), no matter when it is connected to a single-fluid nozzle, a spray gun or a dual-fluid nozzle or a spray gun, the rear end of the mounting tube 2 is fixedly and sealedly connected to the water inlet of the single-fluid nozzle or the spray gun (the connection method, that is, how to perform the fixed sealing connection is a conventional technical means, therefore, it will not be repeated in this embodiment), and the front end is fixedly and sealedly connected to the water pipe; wherein when it is connected to a dual-fluid nozzle or a spray gun, the sealing of the air inlet part of the dual-fluid nozzle or the spray gun is a conventional existing technical means, and is not within the content of the present invention, therefore, it will not be repeated in this embodiment.

[0043] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A nozzle anti-clogging device, characterized in that: include: A mounting tube (2), a sliding tube (3), and a filter assembly (6); the sliding tube (3) is slidingly and sealingly mounted inside the mounting tube (2) and is elastically connected via a spring; a blocking body (5) is fixedly mounted at the front end of the sliding tube (3), and the blocking body (5) seals the front end of the sliding tube (3); at least one filter assembly (6) is provided, and each adjacent two filter assemblies (6) are fixedly connected, and the filter assembly (6) at the front end is fixedly connected to the sliding tube (3); a plurality of water inlet grooves (31) penetrating the sliding tube (3) are provided on the side wall of the sliding tube (3), and each of the water inlet grooves (31) is located in the same plane; A water outlet pipe (4) is fixedly mounted on the mounting pipe (2), one end of the water outlet pipe (4) extends to the outside of the mounting pipe (2) and is fixedly mounted with a valve; a plurality of through holes are opened on the side wall of the water outlet pipe (4); the blocking body (5) and the filter assembly (6) are both sleeved on the water outlet pipe (4) and are slidably fitted with the water outlet pipe (4) in a clearance; A disc (7) is fixedly mounted on the water outlet pipe (4), a guide pipe (8) is fixedly mounted on the filter assembly (6) at the end, and the guide pipe (8) is slidably mounted on the mounting pipe (2); the diameter of the outlet end of the guide pipe (8) is not greater than the diameter of the disc (7); At least one group of water inlet holes is provided on the inner wall of the installation tube (2), and each group of the water inlet holes includes two water inlet holes (21); the two water inlet holes (21) are interconnected; a cleaning water inlet hole (22) and a cleaning water outlet hole (23) are provided on the inner wall of the installation tube (2), the cleaning water inlet hole (22) is located at the rear end of the water inlet hole group, and the cleaning water outlet hole (23) is located at the rear end of the cleaning water inlet hole (22).

2. A nozzle anti-clogging device according to claim 1, characterized in that: An annular groove is provided on the sliding tube (3), and each of the water inlet grooves (31) is provided on the bottom surface of the annular groove.

3. The nozzle anti-clogging device according to claim 1, characterized in that: A blocking tube (41) is slidably installed inside the water outlet pipe (4), one end of the blocking tube (41) is elastically connected to the water outlet pipe (4) via a No. 2 spring, and a blocking disk is fixedly installed on the other end, wherein the diameter of the blocking disk is larger than the inner diameter of the water outlet pipe (4); and No. 2 through holes are respectively provided on the side wall of the blocking tube (41) and match each through hole on the water outlet pipe (4).

4. A nozzle anti-clogging device according to claim 3, characterized in that: The blocking disk is provided with at least one auxiliary through hole penetrating the front and rear end surfaces of the blocking disk.

5. The nozzle anti-clogging device according to claim 1, characterized in that: A blocking tube (9) is provided at the rear end of the mounting tube (2) for insertion and removal, and the sliding tube (3) is elastically connected to the blocking tube (9) via a No. 1 spring; the guide tube (8) is slidably mounted on the blocking tube (9).

6. The nozzle anti-clogging device according to claim 1, characterized in that: The filter assembly (6) comprises: a filter plate mounting ring (61); a filter plate (62) is fixedly mounted in the filter plate mounting ring (61); the filter plate (62) is sleeved on the water outlet pipe (4) and is clearance-matched with the water outlet pipe (4); each two adjacent filter plate mounting rings (61) are fixedly connected by threads, the filter plate mounting ring (61) at the front end is fixedly connected to the sliding pipe (3), and the filter plate mounting ring (61) at the end is fixedly connected to the guide pipe (8).

7. The nozzle anti-clogging device according to claim 5, characterized in that: The mounting tube (2) is provided with a connecting hole, and the cleaning water inlet hole (22) and the cleaning water outlet hole (23) are connected through the connecting hole; an auxiliary cleaning tube (10) is fixedly mounted on the blocking tube (9), one end of the auxiliary cleaning tube (10) is connected to the interior of the connecting hole, and the other end is fixedly connected to the rear end of the outlet pipe (4); the disc (7) is fixedly mounted on the auxiliary cleaning tube (10).

8. The nozzle anti-clogging device according to claim 1, characterized in that: An auxiliary water outlet pipe (11) is provided in the installation pipe (2), one end of the auxiliary water outlet pipe (11) is fixedly connected to the front end of the water outlet pipe (4), and the other end passes through the side wall of the installation pipe (2) to reach the outside of the installation pipe (2), and a valve is fixedly installed thereon; the blocking body (5) is sleeved on the outside of the auxiliary water outlet pipe (11) and is clearance-matched with the auxiliary water outlet pipe (11).

9. The nozzle anti-clogging device according to claim 6, characterized in that: A plurality of flushing holes are provided on the side wall of each filter plate mounting ring (61).

10. The nozzle anti-clogging device according to claim 7, characterized in that: A one-way valve (12) is fixedly installed in the cleaning water outlet hole (23), and the conducting direction of the one-way valve is toward the inside of the installation pipe (2); a liquid pressure sensor (13) is fixedly installed at the upper end of the cleaning water inlet hole (22).

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