Anti-clogging pressure reducing and stabilizing valve

Abstract

This invention provides a pressure-reducing and stabilizing valve for preventing blockage. The valve body has a through cavity; the valve core includes a core rod, with at least a portion of the core movably disposed within the through cavity, and the core is slidable vertically; the valve body has an inlet and an outlet, and also includes a cleaning assembly. The cleaning assembly includes a water wheel movably connected to the core rod, and a bidirectional screw is positioned between the water wheel and the core rod; when water flows from the outlet to the inlet, the water wheel rotates, and under the action of the bidirectional screw, the water wheel reciprocates vertically; a cleaning brush ring is slidably but non-rotatably mounted on the core rod, and the cleaning brush ring has a cleaning brush arm and a hinged arm, with the lower end face of the cleaning brush ring abutting against the upper end face of the water wheel. This invention solves the "dead water zone" problem of traditional backwashing by using a cleaning assembly that reciprocates under the drive of backwash water flow, particularly through the design of a turbulence block.

Description

Technical Field

[0001] This utility model relates to the field of pressure regulating valves, specifically a pressure reducing and regulating valve that prevents clogging. Background Technology

[0002] With technological innovation and the needs of social development, the requirements for production processes in industrial production are becoming increasingly stringent, and the use of adhesives in industrial production also requires correspondingly higher standards. The diversity of adhesive varieties in the market has resulted in a diverse range of applications and operating conditions. Therefore, adhesive applicators need to focus on functional design, with pressure stabilizing devices being a crucial component in their application.

[0003] Currently, existing pressure-reducing and stabilizing valves typically consist of a valve body, valve core, valve seat, main spring, and adjusting bolts. Their working principle involves achieving a balance between the preset pressure of the main spring and the pressure exerted by the outlet water flow on the diaphragm, thus automatically regulating the outlet pressure. When the outlet pressure increases, the diaphragm moves upward, causing the valve core to move in the closing direction, restricting the water flow; when the outlet pressure decreases, the spring force dominates, pushing the valve core in the opening direction, increasing the water flow.

[0004] However, in practical applications, fluids inevitably carry particulate impurities formed after the glue dries. These particles easily accumulate in the complex flow channels inside the valve, especially in the fit clearance between the valve seat and valve core, and at bends in the flow channel, forming so-called "dead zones." Long-term accumulation of particles can obstruct the movement of the valve core, or even cause it to jam, severely affecting the valve's regulation accuracy and pressure stabilization performance, and may ultimately lead to complete valve blockage and failure.

[0005] While some systems employ backflushing, traditional backflushing is mostly passive and static. The reverse water flow typically follows the path of least resistance, failing to effectively flush the dead zones inside the valve. Therefore, traditional backflushing is often insufficiently thorough, failing to fundamentally solve the problem of particulate matter accumulation and clogging. This not only shortens the lifespan of the pressure reducing valve but also increases maintenance frequency and costs. Utility Model Content

[0006] This invention aims to solve the problem that in the backwashing process of existing pressure reducing and stabilizing valves, the water flow cannot effectively flush out the internal dead corners, resulting in the accumulation of particulate impurities, valve core jamming, and affecting performance and lifespan.

[0007] To achieve the above objectives, this utility model provides an anti-clogging pressure reducing and regulating valve, the technical solution of which is as follows:

[0008] A clog-resistant pressure reducing and regulating valve, comprising:

[0009] Valve body, wherein the valve body is provided with a through cavity;

[0010] A valve core, comprising a core rod, wherein at least a portion of the valve core is movably disposed within the through cavity, and the valve core is slidable in a vertical direction;

[0011] The valve body is provided with an inlet and an outlet, and a cleaning assembly is also provided inside. The cleaning assembly includes a water wheel that is movably connected to the core rod, and a bidirectional lead screw is provided between the water wheel and the core rod.

[0012] When water flows from the outlet to the inlet, it causes the water wheel to rotate. At the same time, under the action of the bidirectional lead screw, the water wheel performs reciprocating motion in the vertical direction.

[0013] A cleaning brush ring is slidably but non-rotatably provided on the core rod. The cleaning brush ring is provided with a cleaning brush arm and a hinged arm. The lower end face of the cleaning brush ring abuts against the upper end face of the water wheel.

[0014] The valve body is provided with a guide block, the guide block is provided with a moving groove, and a turbulence block is movably arranged in the moving groove. One end of the turbulence block is hinged to the hinge arm on the cleaning brush ring.

[0015] As a preferred embodiment, the valve body is provided with an adjusting bolt at the top, and a main spring is provided in the through cavity. The adjusting bolt is used to adjust the compression of the main spring, thereby setting the outlet water pressure of the valve body.

[0016] As a preferred embodiment, an indicator cavity is provided on the side of the valve body, and a positioning block is provided on the adjusting bolt. One end of the positioning block extends into the indicator cavity to visually display the pressure setting status.

[0017] As a preferred embodiment, a filter screen is provided in the valve body at the position corresponding to the outer peripheral wall of the cleaning brush ring, which is used to assist in filtering impurities during normal operation and to prevent larger particles from damaging the cleaning components during cleaning.

[0018] As a preferred embodiment, the cross-section of the turbulence block is L-shaped to maximize the change of water flow direction within a limited movement space and enhance the flushing effect on dead corner areas.

[0019] As a preferred embodiment, it includes an adhesive inlet pipeline, a drying gas inlet pipeline, a backwash water inlet pipeline, and a main outlet pipeline;

[0020] The adhesive input pipeline is connected to the inlet of the valve body after passing through the first shut-off valve; the adhesive input pipeline is also provided with a backwash water discharge pipeline, and the backwash water discharge pipeline is provided with a second shut-off valve.

[0021] The drying gas input pipeline merges with the adhesive input pipeline after passing through the third shut-off valve and enters the valve body together.

[0022] The outlet of the valve body is connected to the main output pipeline and the backwash water input pipeline. A waste discharge pipeline is provided on the main output pipeline, and a fourth shut-off valve is provided on the waste discharge pipeline. A fifth shut-off valve is provided on the backwash water input pipeline.

[0023] Compared with the prior art, the present invention has the following significant advantages:

[0024] 1. Thorough Removal of Dead-End Scale: This invention solves the "dead water zone" problem of traditional backwashing by using a cleaning component that reciprocates under the drive of backwash water flow, particularly the design of the baffle block. During backwashing, the reciprocating motion of the baffle block periodically forces a change in the water flow path, acting like a "scraper" or "paddle," actively guiding the water flow to traditional dead-end areas such as corners and grooves inside the valve body, effectively flushing away and removing stubborn scale. Simultaneously, the reciprocating motion of the cleaning brush ring mechanically scrapes the inner wall of the valve body and the surface of the valve core, achieving physical cleaning and further improving the thoroughness of the cleaning.

[0025] 2. Improved Cleaning Efficiency: Because the cleaning method of this invention is active, combining mechanical and hydraulic processes, the efficiency of a single cleaning cycle is far higher than that of traditional passive backwashing. More thorough cleaning means that it effectively prevents the rapid re-accumulation of particles, thereby extending the normal operating time of the valve. It can significantly reduce the frequency of backwashing, lower water consumption and overall system maintenance costs, and extend the service life of the pressure reducing valve. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0028] Figure 2 for Figure 1 Enlarged view of part A;

[0029] Figure 3 This is a schematic diagram of the motion of the turbulence block in one embodiment of the present invention;

[0030] Figure 4 This is a three-dimensional structural diagram of the cleaning brush ring in one embodiment of the present invention;

[0031] Figure 5 This is a pipeline connection diagram of an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Valve body; 11. Through cavity; 12. Inlet; 13. Outlet; 14. Guide block; 15. Moving groove;

[0034] 2. Valve core; 21. Core rod;

[0035] 3. Cleaning components; 31. Water impeller; 32. Two-way lead screw;

[0036] 4. Cleaning brush ring; 41. Cleaning brush arm; 42. Hinge arm;

[0037] 5. Baffle block; 6. Main spring; 7. Adjusting bolt; 8. Filter screen;

[0038] 91. Adhesive liquid inlet pipeline; 91a. First shut-off valve; 92. Backwash water outlet pipeline; 92a. Second shut-off valve; 93. Drying gas inlet pipeline; 93a. Third shut-off valve; 94. Waste discharge pipeline; 94a. Fourth shut-off valve; 95. Backwash water inlet pipeline; 95a. Fifth shut-off valve. Detailed Implementation

[0039] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0040] It will be understood by those skilled in the art that certain well-known structures and their descriptions may be omitted in the accompanying drawings. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0041] Example 1

[0042] Please see Figures 1 to 5 This utility model provides a pressure reducing and stabilizing valve for preventing blockage, including a valve body 1, a valve core 2 disposed inside the valve body 1, and a cleaning component 3 for self-cleaning.

[0043] The valve body 1 has an inlet 12 and an outlet 13, forming a through cavity 11 inside. The valve core 2 includes a core rod 21, which can slide vertically within the through cavity 11 to adjust the flow channel opening between the inlet 12 and the outlet 13. At the top of the valve body 1, there is an adjusting bolt 7 and a main spring 6. By rotating the adjusting bolt 7, the preload of the main spring 6 can be changed, thereby setting the stable pressure at the valve outlet. This is the conventional working principle of a pressure reducing and regulating valve.

[0044] The core of this invention lies in its internal cleaning assembly 3. This cleaning assembly 3 includes a water impeller 31 and a bidirectional lead screw 32. One end of the bidirectional lead screw 32 is movably connected to the valve core rod 21, and the other end is fixedly connected to the water impeller 31. The water impeller 31 is sleeved on the core rod 21 and can rotate around the core rod 21.

[0045] A cleaning brush ring 4 is also fitted onto the core rod 21. This cleaning brush ring 4 engages with the core rod 21 via a keyway or other anti-rotation structure, allowing it to slide only along the axial direction (vertical direction) of the core rod 21 and preventing it from rotating. The lower end face of the cleaning brush ring 4 is in close contact with the upper end face of the water wheel 31. A cleaning brush arm 41 extends radially from the cleaning brush ring 4, and its end can be fitted with wear-resistant bristles for scraping the inner wall of the valve body 1. Furthermore, the cleaning brush ring 4 is also equipped with a hinged arm 42.

[0046] A filter screen 8 is provided inside the valve body 1 at the position of the outer peripheral wall corresponding to the cleaning brush ring 4, which is used to assist in filtering impurities during normal operation.

[0047] A guide block 14 is fixedly installed on the inner wall of the valve body 1. A moving groove 15 is formed on the guide block 14. A turbulence block 5 is movably installed in the moving groove 15. One end of the turbulence block 5 is hinged to the hinge arm 42 on the cleaning brush ring 4 by a pin. In this embodiment, the cross-section of the turbulence block 5 can be designed as L-shaped to enhance its turbulence effect.

[0048] Work process description:

[0049] Normal pressure reduction and stabilization operation: Water flows in from inlet 12, is throttled by valve core 2, and flows out from outlet 13. At this time, cleaning component 3 is not working, and water wheel 31, cleaning brush ring 4, and turbulence block 5 are all in a stationary state.

[0050] Backwash self-cleaning working state: When the valve needs to be cleaned, the system controls the water flow to reverse, that is, water flows in from the outlet 13 and flows out from the inlet 12.

[0051] Step 1: Start-up. The reverse water flow impacts the blades of the water turbine 31, driving the water turbine 31 to rotate around the core rod 21.

[0052] Step Two: Reciprocating Motion. Since the water wheel 31 and the core rod 21 are connected by a bidirectional lead screw 32, the rotational motion of the water wheel 31 is converted by the bidirectional lead screw 32 into a continuous reciprocating linear motion along the axis of the core rod 21. That is, the water wheel 31, along with the cleaning brush ring 4, moves up and down vertically.

[0053] Step 3: Mechanical cleaning. During the up-and-down reciprocating motion, the cleaning brush arm 41 on the cleaning brush ring 4 will repeatedly scrape the inner wall of the filter screen 8 and the surface of the valve core 2, directly brushing away the attached dirt and particles.

[0054] Step 4: Hydraulic Disturbance Cleaning. Simultaneously, the up-and-down movement of the cleaning brush ring 4 drives the turbulence block 5 to swing or move within the moving groove 15 of the guide block 14 via the hinged arm 42. The movement of the turbulence block 5 significantly disrupts the normal flow field of the backwash water, generating eddies and actively changing the direction of the water flow. This forces a strong water flow towards every corner and crevice within the valve body 1, the so-called "dead zones," flushing out deposited particulate impurities, which are then carried out of the valve body 1 by the reverse water flow.

[0055] After connecting valve body 1 to the working pipeline, its working status is as follows:

[0056] Under normal operating conditions, the first shut-off valve 91a remains open to allow adhesive from the adhesive inlet pipe 91 to flow into the valve body 1; the second shut-off valve 92a and the third shut-off valve 93a are both closed, respectively blocking the backwash water outlet pipe 92 and the drying gas inlet pipe 93; the fourth shut-off valve 94a remains open to ensure that any trace residual liquid can be discharged from the main outlet pipe and its waste discharge pipe 94 in a timely manner; the fifth shut-off valve 95a is closed, cutting off the backwash water inlet pipe 95. At this time, the adhesive enters the valve body 1 from the inlet pipe via the first shut-off valve 91a, and after internal pressure reduction and stabilization, it is transported to downstream equipment via the main outlet pipe, achieving stable and continuous adhesive output from the system.

[0057] Backwashing status

[0058] When entering the backwashing state, firstly, the first shut-off valve 91a is closed to cut off the glue input, and simultaneously the third shut-off valve 93a is closed to cut off the drying gas input. Then, the fifth shut-off valve 95a is opened, injecting high-pressure backwash water into the backwash water inlet pipe 95. At this time, the second shut-off valve 92a opens, allowing the waste liquid, composed of backwash water and blockage material inside the valve body 1, to be discharged to the collection device through the backwash water outlet pipe 92. The fourth shut-off valve 94a remains open to release the internal pressure of the valve body 1, preventing excessive back pressure during backwashing from affecting the rinsing effect. This reverse flushing thoroughly removes the blockage material from the valve core 2.

[0059] Hot air drying state

[0060] During hot air drying, the first shut-off valve 91a, the second shut-off valve 92a, and the fifth shut-off valve 95a must be closed to cut off the input and output channels for the adhesive and backwash water. Then, the third shut-off valve 93a is opened to introduce heated gas into the valve body 1. The fourth shut-off valve 94a remains open, allowing the hot air and any carried-away moisture or residual adhesive to be discharged through the waste discharge pipe 91. This allows the internal channels of the valve body 1 to dry quickly, providing a reliable prerequisite for subsequent normal operation or re-backwashing.

[0061] Through the combined effects of mechanical scrubbing and active hydraulic disturbance, this invention can achieve a comprehensive and thorough cleaning of the inside of the pressure reducing and stabilizing valve, effectively solving the problem that traditional backwashing cannot clean dead corners, thus ensuring the long-term stable operation of the valve.

[0062] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pressure-reducing and stabilizing valve with anti-clogging properties, characterized in that, Valve body, wherein the valve body is provided with a through cavity; A valve core, comprising a core rod, wherein at least a portion of the valve core is movably disposed within the through cavity, and the valve core is slidable in a vertical direction; The valve body is provided with an inlet and an outlet, and a cleaning assembly is also provided inside. The cleaning assembly includes a water wheel that is movably connected to the core rod, and a bidirectional lead screw is provided between the water wheel and the core rod. When water flows from the outlet to the inlet, it causes the water wheel to rotate. At the same time, under the action of the bidirectional lead screw, the water wheel performs reciprocating motion in the vertical direction. A cleaning brush ring is slidably but non-rotatably provided on the core rod. The cleaning brush ring is provided with a cleaning brush arm and a hinged arm. The lower end face of the cleaning brush ring abuts against the upper end face of the water wheel. The valve body is provided with a guide block, the guide block is provided with a moving groove, and a turbulence block is movably arranged in the moving groove. One end of the turbulence block is hinged to the hinge arm on the cleaning brush ring.

2. The anti-clogging pressure reducing and stabilizing valve according to claim 1, characterized in that, The valve body is provided with an adjusting bolt at the top, and a main spring is provided in the through cavity. The adjusting bolt is used to adjust the compression of the main spring, thereby setting the outlet water pressure of the valve body.

3. The anti-clogging pressure reducing and stabilizing valve according to claim 2, characterized in that, An indicator cavity is provided on the side of the valve body, and a positioning block is provided on the adjusting bolt, with one end of the positioning block extending into the indicator cavity.

4. The anti-clogging pressure reducing and stabilizing valve according to claim 1, characterized in that, A filter screen is provided inside the valve body at the position corresponding to the outer peripheral wall of the cleaning brush ring.

5. The anti-clogging pressure reducing and stabilizing valve according to claim 1, characterized in that, The cross-section of the turbulence block is L-shaped.

6. The anti-clogging pressure reducing and stabilizing valve according to claim 1, characterized in that, It includes adhesive inlet pipeline, drying gas inlet pipeline, backwash water inlet pipeline and main outlet pipeline; The adhesive input pipeline is connected to the inlet of the valve body after passing through the first shut-off valve; the adhesive input pipeline is also provided with a backwash water discharge pipeline, and the backwash water discharge pipeline is provided with a second shut-off valve. The drying gas input pipeline merges with the adhesive input pipeline after passing through the third shut-off valve and enters the valve body together. The outlet of the valve body is connected to the main output pipeline and the backwash water input pipeline. A waste discharge pipeline is provided on the main output pipeline, and a fourth shut-off valve is provided on the waste discharge pipeline. A fifth shut-off valve is provided on the backwash water input pipeline.

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