A kind of anti-blocking pilot solenoid valve

Abstract

The present invention relates to the technical field of electromagnetic valves, and discloses an anti-blocking pilot electromagnetic valve. The present invention solves the problems of the existing inconvenience in cleaning impurities inside the cleaner and affecting the flow rate of the fluid. The present invention uses a support rod and a push rod. When the electromagnetic valve is energized, the main valve plug opens and drives the support rod to move. Then the support rod drives the piston plate to slide upward in the piston cylinder through the push rod to suck and store the liquid in the device body. Then, when the electromagnetic valve is disconnected and the main valve plug is reset, the push rod drives the piston plate to move downward in the piston cylinder, thereby transporting the liquid stored in the piston cylinder to the impurity discharge mechanism through the circulation pipeline, applying pressure to the impurity discharge mechanism, so that the impurity discharge mechanism automatically opens, and then automatically cleans when the device is closed, avoiding the accumulation of impurities in the device body and improving the practicality of the device.

Description

Technical Field

[0001] The invention relates to the technical field of solenoid valves, in particular to an anti-blocking pilot type solenoid valve. Background Art

[0002] A solenoid valve is a device that uses electromagnetic principles to control the flow of fluids. It is widely used in automatic control systems, industrial manufacturing, and household appliances. There are many types of solenoid valves. According to different working principles, structures, and functions, they can be divided into many types, such as direct-acting solenoid valves, step-by-step direct-acting solenoid valves, pilot-operated solenoid valves, etc. They play their respective roles in different control system positions.

[0003] Announcement No. "CN113294526B" discloses an anti-blocking solenoid valve with a flared filter element. After the fluid enters the valve body, the impact on the force plate drives the double-ear cleaner and the force plate to rotate around the surface of the hemispherical shell filter. It not only cleans the impurities intercepted on the surface of the hemispherical shell filter, but also collects and stores the impurities during the cleaning process, making it difficult for the impurities to be mixed in the fluid again and not easily affecting the use of the valve body. However, there are still certain shortcomings in its use.

[0004] Although the above device can collect and store impurities when in use, a large amount of impurities will remain inside the solenoid valve cleaner after long-term use, which will cause the impurities to overflow and clog the filter. The solenoid valve needs to be removed or replaced during cleaning, which increases the workload of the staff. At the same time, the impurity cleaner is set at the inlet, and the clogged filter will affect the flow rate of the fluid and reduce work efficiency, resulting in certain usage defects. Summary of the invention

[0005] The purpose of the present invention is to provide an anti-blocking pilot solenoid valve to solve the problem raised in the above background technology that after long-term use, a large amount of impurities will remain inside the cleaner of the solenoid valve on the current market, which will cause the impurities to overflow and block the filter. When cleaning, the solenoid valve needs to be dismantled or replaced, which increases the workload of the staff. At the same time, the impurity cleaner is set at the inlet, and the blocked filter will affect the flow rate of the fluid and reduce work efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-blocking pilot-operated solenoid valve, comprising a device body, a water inlet port is provided on the device body, an inner tube is fixedly connected to the device body, one end of the inner tube away from the water inlet port penetrates and extends out of the device body to form a water outlet, and a flow hole is provided at the top of the inner tube inside the device body, a solenoid valve body is fixedly connected to the top of the device body, a compression spring is fixedly connected to the solenoid valve body, and an iron core is provided below the compression spring;

[0007] Also includes:

[0008] An impurity discharge mechanism is provided at the lower end of the device body, and a main valve plug is movably connected in the device body, a bypass hole is provided on the main valve plug, and a guide hole is provided in the middle of the main valve plug, a support rod is fixedly connected to the side of the main valve plug, and a push rod is fixedly installed on the support rod, a piston cylinder is provided in the device body below the push rod, and a piston sheet is slidably connected in the piston cylinder, and a flow pipe is passed through the side wall of the piston cylinder, the water outlet end of the flow pipe extends into the impurity discharge mechanism, and the impurity discharge mechanism is used to discharge the waste collected in the device body;

[0009] An impeller is rotatably mounted on the outer side of one end of the inner tube away from the water outlet, and a filter plate is rotatably connected to the impeller shaft end, and an impurity collecting mechanism is provided on the filter plate for collecting impurities in the water to prevent clogging.

[0010] Preferably, the main valve plug is located directly below the solenoid valve body, and a first spring is fixedly connected to the top of the solenoid valve body, the bottom end of the first spring is fitted with the main valve plug, and the bottom end of the main valve plug is sealed with the flow hole under the elastic action of the first spring, and the bottom end of the guide hole on the main valve plug is aligned with the flow hole, the top of the guide hole is fitted with the iron core, and a sealing cap that performs a sealing function is fixedly provided at the bottom of the iron core.

[0011] Preferably, four support rods and four piston cylinders are provided, and the support rods and the piston cylinders are symmetrically distributed in pairs around the main valve plug. The support rod is arranged in an "L"-shaped structure, and the top rod at the bottom end of the support rod extends through the piston cylinder and is fixedly connected to the piston plate, and the water inlet end of the piston cylinder is connected to the device body through a one-way flow pipe.

[0012] Preferably, the impurity discharge mechanism comprises: a discharge pipe, a telescopic rod, a sealing plug, a connecting rod and a sealing plate, the discharge pipe is fixedly installed at the bottom end of the device body away from the water inlet port, and the top end of the discharge pipe penetrates into the interior of the device body, and a slot is provided on the side of the discharge pipe, a telescopic rod is fixedly installed in the slot provided at the bottom end of the device body, and a sealing plug is fixedly connected to the top end of the telescopic rod, a connecting rod is fixedly connected to the top end of the sealing plug, and a sealing plate is fixedly connected to the top end of the connecting rod.

[0013] Preferably, a first sewage discharge hole is provided on the side wall of one end of the discharge pipe extending into the interior of the device body, and a return spring is fixedly connected to the bottom end of the discharge pipe. The return spring is sleeved on the outside of the telescopic rod, and the return spring is fixedly connected to the telescopic rod. The sealing plug on the telescopic rod is sealed and aligned with the slot hole provided on the side of the discharge pipe.

[0014] Preferably, the sealing plate is a circular ring structure with a top seal, and the sealing plate is sealed against the inner wall of the discharge pipe, and a second drain hole is opened on the side wall of the sealing plate, and the second drain hole corresponds to the first drain hole.

[0015] Preferably, the impeller is aligned with the water inlet port, and the axial end of the impeller extends through the filter plate and is connected to the impurity collection mechanism, the filter plate is aligned with the end of the water inlet port, and the filter plate is fixedly connected to the inner wall of the device body, and two openings are symmetrically opened on the filter plate.

[0016] Preferably, the impurity collecting mechanism includes: a scraper, a rotating ring, a knocking rod, a first magnet and a second magnet, the scraper and the rotating ring are symmetrically arranged about the filter plate, and the bottom end of the scraper is fixedly connected to the outer wall of the impeller shaft end, the scraper is fitted with the surface of the filter plate, and the top end of the scraper is fixedly connected to the second magnet, and the scraper is arranged in three groups in a circular array about the center point of the impeller, the rotating ring is sleeved on the outside of the impeller shaft end, and the rotating ring is movably connected to the filter plate, the side wall of the rotating ring is fixedly connected to the knocking rod, and the knocking rod is arranged in an "L" shape, and the end of the knocking rod away from the rotating ring is fixedly connected to the first magnet.

[0017] Preferably, the rotating ring is slidably connected to the filter plate, and an auxiliary spring is connected between the rotating ring and the filter plate, and the rotating ring and the filter plate form an elastic telescopic structure through the auxiliary spring, and three knocking rods on the rotating ring are arranged in a circular array about the center point of the rotating ring, and the first magnet on the knocking rod is aligned with the second magnet, and the opposite sides of the first magnet and the second magnet are the same magnetic poles.

[0018] Preferably, the impurity collection mechanism also includes: a hose and a collecting hood, wherein two hoses are symmetrically arranged about the filter plate, and the two hoses are aligned with the openings on the filter plate, and the hose inlet is fixedly connected to the openings, the hose outlet is connected to the collecting hood, and the collecting hood is fixedly arranged at one end of the device body away from the water inlet port, the bottom end of the collecting hood is sleeved on the outside of the discharge pipe, and the first sewage discharge hole on the discharge pipe is located in the collecting hood.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the anti-blocking pilot solenoid valve can prevent impurities from accumulating in the solenoid valve, keep the pipeline unobstructed, reduce the damage of impurities to the device, improve practicality, and at the same time can collect impurities and automatically discharge the collected impurities when the valve is powered off, thereby improving the stability of the device during operation and maintaining the purity of the fluid. The specific contents are as follows:

[0020] 1. A support rod and a push rod are provided. When the solenoid valve is energized, the main valve plug opens and drives the support rod to move. Then the support rod drives the piston plate to slide upward in the piston cylinder through the push rod, and the liquid in the device body is sucked and stored. Then, when the solenoid valve is disconnected and the main valve plug is reset, the push rod drives the piston plate to move downward in the piston cylinder, thereby transporting the liquid stored in the piston cylinder to the impurity discharge mechanism through the circulation pipeline, applying pressure to the impurity discharge mechanism, so that the impurity discharge mechanism automatically opens, and then automatically cleans when the device is closed, avoiding the accumulation of impurities in the device body and improving the practicality of the device.

[0021] 2. A discharge pipe, a sealing plug and a sealing plate are provided. In the initial state, the sealing plate seals the first drain hole under the elastic force of the reset spring. When the liquid in the circulation pipe is transported to the discharge pipe, the pressure generated will push the sealing plug to move downward, thereby automatically opening the slot hole opened on the side of the discharge pipe. Then the downward-moving sealing plug simultaneously pulls the sealing plate downward, so that the second drain hole on the sealing plate is aligned with the first drain hole, so that the water in the device body flows out through the collection cover, and the impurities in the collection cover are indirectly brought out by the discharge pipe, and the sewage is automatically discharged, which prolongs the life of the equipment and reduces the maintenance cost.

[0022] 3. An impeller, a filter plate and a scraper are provided. The filter plate can filter impurities in the liquid. Then, under the impact of the liquid, the impeller drives the scraper to scrape along the surface of the filter plate to self-clean the filter plate and improve the filtering effect of the filter plate.

[0023] 4. A first magnet and a second magnet are provided. When the scraper rotates, it will drive the first magnet to rotate synchronously, so that the first magnet is intermittently aligned with the second magnet, and further generate repulsive force when the first magnet is opposite to the second magnet, thereby pushing the knocking rod to move relative to each other, and then when the first magnet is separated from the second magnet, the knocking rod is reset and knocks the filter plate under the elastic force of the auxiliary spring, so that the filter plate vibrates, thereby further improving the filtering effect of the filter plate.

[0024] 5. A hose and a collection hood are provided. Due to the action of the scraper, impurities enter the hose from the opening, and then the impurities in the hose enter the collection hood for collection, thereby gathering the impurities in one place for subsequent cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0026] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0027] Figure 3 It is a schematic diagram of the side section structure of the present invention;

[0028] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0029] Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0030] Figure 6 This is a schematic diagram of the installation structure of the filter plate of the present invention;

[0031] Figure 7 This is a schematic diagram of the installation structure of the collection cover of the present invention;

[0032] Figure 8 This is a schematic diagram of the main cross-sectional structure of the piston cylinder of the present invention;

[0033] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at C in the middle;

[0034] Fig.10 It is a schematic diagram of the top-sectional structure of the present invention;

[0035] Fig.11 This is a schematic diagram of the main valve plug installation structure of the present invention;

[0036] Fig.12 This is a schematic diagram of the main cross-sectional structure of the discharge pipe of the present invention;

[0037] Fig.13 For the present invention Fig.12 Enlarged structural diagram at D in the middle.

[0038] In the figure: 1. device body; 101. water inlet port; 2. inner tube; 201. water outlet; 202. circulation hole; 3. solenoid valve body; 4. compression spring; 5. iron core; 6. main valve plug; 601. bypass hole; 602. guide hole; 603. first spring; 7. support rod; 8. push rod; 9. piston cylinder; 10. piston plate; 11. discharge pipe; 1101. first sewage discharge hole; 12. telescopic rod; 1201. reset spring; 13. sealing plug; 14. connecting rod; 15. sealing plate; 1501. second sewage discharge hole; 16. circulation pipeline; 17. impeller; 18. filter plate; 1801. opening; 19. scraper; 20. rotating ring; 2001. auxiliary spring; 21. knocking rod; 22. first magnet; 23. second magnet; 24. hose; 25. collection cover. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1: Please refer to Figure 1-Figure 13 As shown, the present invention provides a technical solution: an anti-blocking pilot solenoid valve, including a device body 1, a water inlet port 101 is provided on the device body 1, and an inner tube 2 is fixedly connected inside the device body 1, one end of the inner tube 2 away from the water inlet port 101 penetrates through the device body 1 and extends out to form a water outlet 201, and a flow hole 202 is provided at the top of the inner tube 2 inside the device body 1, a solenoid valve body 3 is fixedly connected to the top of the device body 1, a compression spring 4 is fixedly connected inside the solenoid valve body 3, and an iron core 5 is arranged below the compression spring 4.

[0041] This technical solution utilizes the design of the device body 1 and the inner tube 2. When in use, first select a device body 1 of suitable model and size, then connect the water inlet port 101 of the device body 1 to the pipe outlet, and connect the water outlet 201 of the inner tube 2 to the pipe inlet, and fix them with fixing parts to complete the installation of the device body 1.

[0042] Embodiment 2: The technical content disclosed in this embodiment is an improvement made on the basis of the above-mentioned embodiment 1. The existing impurity cleaner is set at the inlet. The clogged filter screen will affect the flow rate of the fluid and reduce the working efficiency. The technical solution is as follows: Figure 1 and Figure 3-Figure 7As shown, an impurity collection mechanism of the solenoid valve is disclosed, wherein an impeller 17 is rotatably installed on the outer side of one end of the inner tube 2 away from the water outlet 201, and a filter plate 18 is rotatably connected to the shaft end of the impeller 17, and an impurity collection mechanism is arranged on the filter plate 18, and the impurity collection mechanism is used to collect impurities in the water body to prevent clogging, the impeller 17 is aligned with the water inlet port 101, and the shaft end of the impeller 17 extends through the filter plate 18 and is connected to the impurity collection mechanism, the filter plate 18 is aligned with the end of the water inlet port 101, and the filter plate 18 is fixedly connected to the inner wall of the device body 1, and ... The impurity collecting mechanism comprises: a scraper 19, a rotating ring 20, a knocking rod 21, a first magnet 22 and a second magnet 23. The scraper 19 and the rotating ring 20 are symmetrically arranged with respect to the filter plate 18, and the bottom end of the scraper 19 is fixedly connected to the outer wall of the shaft end of the impeller 17, the scraper 19 is fitted with the surface of the filter plate 18, and the top end of the scraper 19 is fixedly connected to the second magnet 23, and the scraper 19 is arranged in three groups in a circular array with respect to the center point of the impeller 17, the rotating ring 20 is sleeved on the outer side of the shaft end of the impeller 17, and the rotating ring 20 is movably connected to the filter plate 18, and the rotating ring 20 is movably connected to the filter plate 18. The side wall of the ring 20 is fixedly connected to the knocking rod 21, and the knocking rod 21 is set in an "L" shape, and the end of the knocking rod 21 away from the rotating ring 20 is fixedly connected to the first magnet 22, the rotating ring 20 is slidably connected to the filter plate 18, and an auxiliary spring 2001 is connected between the rotating ring 20 and the filter plate 18, and the rotating ring 20 and the filter plate 18 form an elastic telescopic structure through the auxiliary spring 2001, and the knocking rod 21 on the rotating ring 20 is arranged in a circular array with respect to the center point of the rotating ring 20, and the first magnet 22 on the knocking rod 21 is aligned with the second magnet 23 ... first magnet 22 on the knocking rod 21. The side of the first magnet 22 opposite to the second magnet 23 is a magnetic pole of the same name. The impurity collection mechanism also includes: a hose 24 and a collecting cover 25. Two hoses 24 are symmetrically arranged about the filter plate 18, and the two hoses 24 are aligned with the opening 1801 on the filter plate 18, and the inlet of the hose 24 is fixedly connected to the opening 1801, the outlet of the hose 24 is connected to the collecting cover 25, and the collecting cover 25 is fixedly arranged at one end of the device body 1 away from the water inlet port 101, the bottom end of the collecting cover 25 is sleeved on the outside of the discharge pipe 11, and the first sewage discharge hole 1101 on the discharge pipe 11 is located in the collecting cover 25.

[0043] In this technical solution, Figure 1As shown, the filter plate 18, the opening 1801 and the scraper 19 are used. Since the filter plate 18 will filter the impurities in the water, the impurities are prevented from gathering in the device body 1 and clogging the device body 1. Then, the scraper 19 will rotate along the surface of the filter plate 18 driven by the impeller 17 to clean the filter plate 18 and improve the filtering efficiency of the filter plate 18. Driven by the scraper 19, the impurities will move on the surface of the filter plate 18. When the impurities move to the vicinity of the opening 1801, the impurities can be collected as much as possible under the influence of the suction force of the water flow, thereby preventing the impurities from gathering on the surface of the filter plate 18, making the liquid flow faster and ensuring the durability of the filtration.

[0044] Its use is as Figure 3-Figure 7 According to the technical solution shown, first, when the solenoid valve is opened, when the liquid flows into the device body 1 through the pipeline, the filter plate 18 will filter the impurities in the liquid, and then the filtered liquid will impact the impeller 17, so that the impeller 17 drives the scraper 19 to rotate. When the scraper 19 rotates, it will scrape the impurities attached to the surface of the filter plate 18, thereby bringing the impurities into the vicinity of the opening 1801, so that the suction force generated by the liquid will suck the impurities from the opening 1801 into the hose 24. At the same time, when the scraper 19 rotates, it will drive the second magnet 23 to rotate, so that the second magnet 23 is intermittently aligned with the first magnet 22. When the second magnet 23 When it is intermittently aligned with the first magnet 22, the repulsive force generated at this time will push the first magnet 22 to move backward, and then the first magnet 22 will drive the knocking rod 21 to move, so that the knocking rod 21 stretches the auxiliary spring 2001 through the rotating ring 20, and when the second magnet 23 is intermittently separated from the first magnet 22, the elastic force of the auxiliary spring 2001 will drive the rotating ring 20 to reset, so that the knocking rod 21 knocks on the filter plate 18, causing the filter plate 18 to vibrate, thereby improving the filtering effect of the filter plate 18, and further impurities entering the hose 24 will enter the collection cover 25 through the hose 24 under the drive of the liquid flow direction for storage.

[0045] Embodiment 3: The technical content disclosed in this embodiment is a further improvement based on the above-mentioned embodiments 1 and 2. After the solenoid valve is used for a long time, a large amount of impurities will remain inside the cleaner, which will cause the impurities to overflow and block the filter. When cleaning, the solenoid valve needs to be removed or replaced, which increases the workload of the staff. In order to further solve this technical problem, the technical solution of this invention is as follows: Figure 2 and Figure 8-Figure 13As shown, an impurity discharge mechanism of a solenoid valve is disclosed, wherein the impurity discharge mechanism is provided at the lower end of a device body 1, and a main valve plug 6 is movably connected in the device body 1, a bypass hole 601 is provided on the main valve plug 6, and a guide hole 602 is provided in the middle of the main valve plug 6, a support rod 7 is fixedly connected to the side of the main valve plug 6, and a push rod 8 is fixedly installed on the support rod 7, a piston cylinder 9 is provided in the device body 1 below the push rod 8, a piston sheet 10 is slidably connected in the piston cylinder 9, and a flow pipe 16 is passed through the side wall of the piston cylinder 9, and a water outlet end of the flow pipe 16 extends into the impurity discharge mechanism, and the impurity discharge mechanism is used to discharge the waste collected in the device body 1, The main valve plug 6 is located directly below the electromagnetic valve body 3, and a first spring 603 is fixedly connected to the top end of the electromagnetic valve body 3, the bottom end of the first spring 603 is fitted with the main valve plug 6, and the bottom end of the main valve plug 6 is sealed and fitted with the flow hole 202 under the elastic action of the first spring 603, and the bottom end of the guide hole 602 on the main valve plug 6 is aligned with the flow hole 202, the top end of the guide hole 602 is fitted with the iron core 5, and a sealing cap for sealing is fixedly provided at the bottom end of the iron core 5, four support rods 7 and four piston cylinders 9 are provided, and the support rods 7 and the piston cylinders 9 are symmetrically distributed around the main valve plug 6 in pairs, the support rod 7 is arranged in an "L"-shaped structure, and a top rod 8 at the bottom end of the support rod 7 penetrates The piston cylinder 9 is inserted into the piston cylinder 9 and is fixedly connected with the piston plate 10, and the water inlet end of the piston cylinder 9 is connected with the device body 1 through a one-way flow pipe. The impurity discharge mechanism includes: a discharge pipe 11, a telescopic rod 12, a sealing plug 13, a connecting rod 14 and a sealing plate 15. The discharge pipe 11 is fixedly installed at the bottom end of the device body 1 away from the water inlet port 101, and the top end of the discharge pipe 11 penetrates and extends into the interior of the device body 1, and a slot is opened on the side of the discharge pipe 11. The telescopic rod 12 is fixedly installed in the slot opened at the bottom end of the device body 1, and the top end of the telescopic rod 12 is fixedly connected to the sealing plug 13, and the top end of the sealing plug 13 is fixedly connected to the connecting rod 14, and the connecting rod 14 A sealing plate 15 is fixedly connected to the top, a first drain hole 1101 is provided on the side wall of one end of the discharge pipe 11 extending into the interior of the device body 1, and a reset spring 1201 is fixedly connected to the bottom end of the discharge pipe 11, the reset spring 1201 is sleeved on the outside of the telescopic rod 12, and the reset spring 1201 is fixedly connected to the telescopic rod 12, the sealing plug 13 on the telescopic rod 12 is sealed and aligned with the slot hole provided on the side of the discharge pipe 11, the sealing plate 15 is a circular ring structure with a top seal, and the sealing plate 15 is sealed and fitted with the inner wall of the discharge pipe 11, a second drain hole 1501 is provided on the side wall of the sealing plate 15, and the second drain hole 1501 corresponds to the first drain hole 1101.

[0046] In this technical solution, Figure 2As shown, by utilizing the arrangement of the push rod 8, the piston cylinder 9 and the piston plate 10, when the solenoid valve is closed, the push rod 8 pushes the piston plate 10 to slide in the piston cylinder 9, thereby discharging the liquid in the piston cylinder 9 from the circulation pipe 16 into the discharge pipe 11, and then automatically opens the first sewage discharge hole 1101 connected to the collection cover 25 under the action of the pressure difference to discharge sewage, and automatically resets and seals when the pressure difference disappears, which helps to maintain the purity of the liquid and reduce fluid contamination caused by impurities.

[0047] Its use is as Figure 8-Figure 13 The technical solution shown, first, when the solenoid valve is opened, the liquid enters the inside of the device body 1 from the water inlet port 101, and then flows into the top of the main valve plug 6 through the bypass hole 601. When the solenoid valve body 3 is energized, the iron core 5 is attracted by the magnetic force to squeeze the compression spring 4 upward to shrink. At this time, the guide hole 602 is opened, so that the liquid flowing into the top of the main valve plug 6 flows into the inner tube 2 through the guide hole 602. Then, under the influence of pressure, the main valve plug 6 squeezes the first spring 603 to shrink, thereby opening the guide hole 602, so that the liquid in the device body 1 flows into the inner tube 2 through the guide hole 602, and then flows out from the water outlet 201. At the same time, when the main valve plug 6 moves upward, it will drive the support rod 7 to move, and then the support rod 7 pulls the piston plate 10 to slide in the piston cylinder 9 through the push rod 8, so that the filtered liquid passes through a specially designed pipeline, so that the fluid can only flow in one direction, and then the liquid is sucked into the piston cylinder 9 for storage;

[0048] When the electromagnetic valve body 3 is powered off, the iron core 5 is affected by the elastic force of the compression spring 4 and moves downward, blocking the guide hole 602, so that the liquid cannot flow out of the guide hole 602, thereby collecting the liquid entering the main valve plug 6 from the bypass hole 601, so that the pressure squeezing the main valve plug 6 is weakened, and then under the elastic force of the first spring 603, the main valve plug 6 moves downward and seals with the flow hole 202. At the same time, when the main valve plug 6 moves downward, it will drive the support rod 7 to move, so that the support rod 7 pushes the piston plate 10 to move downward in the piston cylinder 9 through the push rod 8, so that the liquid stored in the piston cylinder 9 is discharged from the flow pipe. 16 is transported to the discharge pipe 11, so that the pressure in the discharge pipe 11 increases, thereby squeezing the sealing plug 13 to move downward, and the downwardly moved sealing plug 13 squeezes the return spring 1201 to contract, and at the same time pulls the sealing plate 15 to move through the connecting rod 14, so that the second drainage hole 1501 on the sealing plate 15 is aligned with the first drainage hole 1101, and the further downwardly moved sealing plug 13 is separated from the slot hole on the side of the discharge pipe 11, so that the slot hole is automatically opened, so that the liquid in the flow pipe 16 and the liquid in the collection cover 25 are discharged from the slot hole on the discharge pipe 11 at the same time, so that the impurities in the collection cover 25 are discharged along the direction of the water flow;

[0049] When the liquid in the piston cylinder 9 is drained, the elastic force of the reset spring 1201 is greater than the pressure of the liquid, thereby driving the sealing plug 13 to reset and seal the slot on the discharge pipe 11. Then the sealing plate 15 moves up, so that the second drain hole 1501 is staggered with the first drain hole 1101, thereby sealing to prevent liquid leakage.

[0050] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A blockage-proof pilot-operated electromagnetic valve, comprising a device body (1), the device body (1) being provided with a water inlet port (101), an inner tube (2) being fixedly connected inside the device body (1), an end of the inner tube (2) being away from the water inlet port (101) extending through the device body (1) and being provided with a water outlet (201), and a top end of the inner tube (2) inside the device body (1) being provided with a flow hole (202), a solenoid valve body (3) being fixedly connected at the top end of the device body (1), a compression spring (4) being fixedly connected inside the solenoid valve body (3), and an iron core (5) being provided below the compression spring (4); It is characterized in that Also includes: An impurity discharge mechanism is provided at the lower end of the device body (1), and a main valve plug (6) is movably connected inside the device body (1), a bypass hole (601) is provided on the main valve plug (6), and a guide hole (602) is provided in the middle of the main valve plug (6), a support rod (7) is fixedly connected to the side of the main valve plug (6), and a push rod (8) is fixedly installed on the support rod (7), a piston cylinder (9) is provided in the device body (1) below the push rod (8), a piston plate (10) is slidably connected inside the piston cylinder (9), and a flow pipe (16) passes through the side wall of the piston cylinder (9), the water outlet end of the flow pipe (16) extends into the impurity discharge mechanism, and the impurity discharge mechanism is used to discharge waste collected inside the device body (1); An impeller (17) is rotatably mounted on the outer side of one end of the inner tube (2) away from the water outlet (201); a filter plate (18) is rotatably connected to the shaft end of the impeller (17); an impurity collection mechanism is provided on the filter plate (18) and connected thereto; the impurity collection mechanism is used to collect impurities in the water body to prevent clogging; The main valve plug (6) is located directly below the electromagnetic valve body (3), and a first spring (603) is fixedly connected to the top of the electromagnetic valve body (3), the bottom end of the first spring (603) is in contact with the main valve plug (6), and the bottom end of the main valve plug (6) is sealed and in contact with the flow hole (202) under the elastic action of the first spring (603), and the bottom end of the guide hole (602) on the main valve plug (6) is aligned with the flow hole (202), the top end of the guide hole (602) is in contact with the iron core (5), and a sealing cap is fixedly provided at the bottom end of the iron core (5) for sealing; Four support rods (7) and four piston cylinders (9) are provided, and the support rods (7) and the piston cylinders (9) are symmetrically distributed in pairs around the main valve plug (6), the support rods (7) are arranged in an "L"-shaped structure, and the top rod (8) at the bottom end of the support rod (7) penetrates into the piston cylinder (9) and is fixedly connected to the piston plate (10), and the water inlet end of the piston cylinder (9) is connected to the device body (1) through a one-way flow pipeline; The impurity collecting mechanism comprises: a scraper (19), a rotating ring (20), a knocking rod (21), a first magnet (22) and a second magnet (23), wherein the scraper (19) and the rotating ring (20) are symmetrically arranged with respect to the filter plate (18), and the bottom end of the scraper (19) is fixedly connected to the outer wall of the shaft end of the impeller (17), the scraper (19) is in contact with the surface of the filter plate (18), and the top end of the scraper (19) is fixedly connected to the second magnet (23). The scrapers (19) are arranged in three groups in a circular array about the center point of the impeller (17); the rotating ring (20) is sleeved on the outer side of the shaft end of the impeller (17); the rotating ring (20) is movably connected to the filter plate (18); the side wall of the rotating ring (20) is fixedly connected to the knocking rod (21); the knocking rod (21) is arranged in an "L"-shaped structure; and one end of the knocking rod (21) away from the rotating ring (20) is fixedly connected to the first magnet (22); The rotating ring (20) is slidably connected to the filter plate (18), and an auxiliary spring (2001) is connected between the rotating ring (20) and the filter plate (18), and the rotating ring (20) and the filter plate (18) form an elastic telescopic structure through the auxiliary spring (2001), three knocking rods (21) on the rotating ring (20) are arranged in a circular array about the center point of the rotating ring (20), and the first magnet (22) and the second magnet (23) on the knocking rod (21) are aligned, and the opposite sides of the first magnet (22) and the second magnet (23) are magnetic poles of the same name; The impurity collection mechanism further comprises: a hose (24) and a collection hood (25), wherein two hoses (24) are symmetrically arranged with respect to the filter plate (18), and the two hoses (24) are aligned with the opening (1801) on the filter plate (18), and the inlet of the hose (24) is fixedly connected to the opening (1801), and the outlet of the hose (24) is communicated with the collection hood (25), and the collection hood (25) is fixedly arranged at one end of the device body (1) away from the water inlet port (101), and the bottom end of the collection hood (25) is sleeved on the outside of the discharge pipe (11), and the first sewage discharge hole (1101) on the discharge pipe (11) is located in the collection hood (25).

2. The anti-blocking pilot solenoid valve according to claim 1, Features: The impurity discharge mechanism comprises: a discharge pipe (11), a telescopic rod (12), a sealing plug (13), a connecting rod (14) and a sealing plate (15); the discharge pipe (11) is fixedly mounted on the bottom end of the device body (1) at a side away from the water inlet port (101); the top end of the discharge pipe (11) penetrates and extends into the inside of the device body (1); a slot is provided on the side of the discharge pipe (11); the telescopic rod (12) is fixedly mounted in the slot provided at the bottom end of the device body (1); the top end of the telescopic rod (12) is fixedly connected to the sealing plug (13); the top end of the sealing plug (13) is fixedly connected to the connecting rod (14); and the top end of the connecting rod (14) is fixedly connected to the sealing plate (15).

3. The anti-blocking pilot solenoid valve according to claim 2, Features: A first sewage discharge hole (1101) is formed on a side wall of one end of the discharge pipe (11) extending into the interior of the device body (1), and a return spring (1201) is fixedly connected to the bottom end of the discharge pipe (11); the return spring (1201) is sleeved on the outside of the telescopic rod (12), and the return spring (1201) is fixedly connected to the telescopic rod (12); the sealing plug (13) on the telescopic rod (12) is sealed and aligned with a slot hole formed on the side of the discharge pipe (11).

4. The anti-blocking pilot solenoid valve according to claim 2, Features: The sealing plate (15) is a circular ring structure with a top seal, and the sealing plate (15) is in sealing contact with the inner wall of the discharge pipe (11). A second drainage hole (1501) is provided on the side wall of the sealing plate (15), and the second drainage hole (1501) corresponds to the first drainage hole (1101).

5. The anti-blocking pilot solenoid valve according to claim 1, Features: The impeller (17) is aligned with the water inlet port (101), and the axial end of the impeller (17) extends through the filter plate (18) to be connected to the impurity collection mechanism, the filter plate (18) is aligned with the end of the water inlet port (101), and the filter plate (18) is fixedly connected to the inner wall of the device body (1), and two openings (1801) are symmetrically provided on the filter plate (18).

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