A valve core anti-scouring regulating valve

Abstract

The utility model relates to the technical field of governing valve, and disclose a valve core anti -scouring governing valve, including governing valve body, the valve seat is fixed on governing valve body, the support and support seat are fixed on valve seat, the screw rod is threadedly installed on the support, the valve rod is fixed in the screw rod, the knob is fixed in the valve rod top, the valve core body is fixed in the valve rod bottom, the sealing ring is connected with the valve core body outer circle fixed cover, the flange no. Flange no. One end side of one of the flanges is equipped with the flange no. 2, the filter assembly is equipped in the flange no. The utility model plays the role of shunt through the blocking piece of valve core body bottom, disperses the high pressure medium flow that originally concentrated impact valve core as a number of fine streams, weakens the impact intensity of medium to valve core body surface, slows down the wear deformation speed of valve core body, prolongs the service life of valve core body, avoids the downtime replacement caused by the frequent wear of valve core.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, specifically a valve core anti-erosion regulating valve. Background Technology

[0002] A control valve is a device used to control the flow rate, pressure, or temperature of a fluid. It is commonly used in industrial automation systems to ensure that the fluid in the system operates within a predetermined parameter range, and to maintain the required flow rate by controlling the opening of the control valve.

[0003] During the process of using a control valve to transport media, the high-pressure medium will have a strong impact on the surface of the valve core. Under long-term scouring, the valve core is prone to wear and deformation, which will significantly shorten its service life and require frequent shutdowns to replace the valve core. This not only increases the equipment maintenance cost but also affects the continuity of production. Furthermore, when the medium contains particulate impurities, these impurities will adhere to the surface of the valve core with the flow of the medium, aggravating the wear of the valve core. They may even become embedded in the fit gap between the valve core and the sealing seat, causing the valve core to jam, affecting the smoothness of the regulation action, reducing the accuracy of flow regulation, and in severe cases, even causing the control valve to fail.

[0004] Therefore, we propose a valve core anti-erosion regulating valve to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this utility model is to provide a valve core anti-erosion regulating valve to solve the problems mentioned in the background art, where high-pressure media will strongly impact the surface of the valve core during the media transportation process, and the valve core is prone to wear and deformation and is not easy to filter the transported media under long-term erosion.

[0006] This utility model provides the following technical solution: a valve core anti-erosion regulating valve, including a regulating valve body, a valve seat fixed on the regulating valve body, a support and a base fixed on the valve seat, a screw threaded on the support, a valve stem fixed inside the screw, a knob fixed on the top of the valve stem, a valve core body fixed on the bottom of the valve stem, a sealing ring fixedly sleeved on the outer ring of the valve core body, and flanges symmetrically installed on both sides of the regulating valve body, with a flange second installed on one end of flange first, and a filter assembly provided inside flange first.

[0007] Preferably, a sealing seat is fixed inside the regulating valve body, and the valve core body is engaged with the sealing seat.

[0008] Preferably, the valve core body has a plug at the bottom, and the plug has multiple through holes.

[0009] Preferably, the filter assembly includes a circular groove formed in the flange, a filter screen is engaged in the circular groove, and the filter screen has insertion holes.

[0010] Preferably, a locking block is fixed inside the flange, a cavity is formed inside the locking block, a spring is fixed to the inner wall of the cavity, an insertion rod is fixed to the bottom of the spring, and a pull rod is fixed to the surface of the insertion rod.

[0011] Preferably, the insertion rod is inserted into the insertion hole.

[0012] This utility model has the following beneficial effects: 1. This control valve solves the problem of traditional control valve cores being easily eroded and worn by high-pressure media. The block at the bottom of the valve core can play an efficient diversion role, dispersing the high-pressure media flow that originally concentrated on impacting the valve core into multiple fine streams, weakening the impact intensity of the medium on the surface of the valve core, slowing down the wear and deformation rate of the valve core, extending the service life of the valve core, and avoiding downtime and replacement due to frequent wear of the valve core. This reduces equipment maintenance costs and ensures the continuity of production.

[0013] 2. This regulating valve can effectively avoid the problem of sealing failure after valve core wear. The sealing ring fitted on the outer ring of the valve core can tightly fill the gap between the valve core and the sealing seat. Combined with the precise snap-fit ​​structure of the two, a double sealing guarantee is formed. Even after long-term operation, it can maintain a good sealing effect, effectively preventing the medium from leaking from the gap. This reduces medium waste and lowers the environmental risks caused by leakage.

[0014] 3. This control valve specifically addresses the problem of particulate impurities in the medium exacerbating valve core wear and causing valve core jamming. Through a pre-filter design, the quality of the medium entering the valve body is optimized. The filter screen inside flange one can efficiently intercept particulate impurities in the medium, preventing impurities from impacting the valve core body or embedding in the fit gap between the valve core and the sealing seat. This reduces additional wear on the valve core body and sealing ring caused by impurities, prevents valve core jamming, ensures smooth regulation, guarantees flow regulation accuracy, avoids valve failure due to impurities, and further improves the stability of equipment operation.

[0015] 4. The filter assembly of this regulating valve is easy and efficient to maintain. The filter screen adopts a quick-release structure of insert rod and spring. Operators do not need to disassemble the entire regulating valve. They can simply pull the rod to remove and install the filter screen. Whether it is daily cleaning or replacing a new filter screen, it is very convenient, which greatly shortens the maintenance time and reduces the maintenance difficulty and labor costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 .

[0018] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0019] Figure 4 This is an overall sectional view of the present invention.

[0020] Figure 5 This is a schematic diagram of the valve core structure of this utility model.

[0021] In the diagram: 1. Control valve body; 102. Sealing seat; 2. Valve seat; 3. Support; 4. Support base; 5. Screw; 6. Valve stem; 7. Knob; 8. Valve core; 9. Sealing ring; 10. Plug; 11. Through hole; 12. Flange 1; 13. Flange 2; 14. Filter assembly; 141. Filter screen; 142. Insertion hole; 143. Circular groove; 144. Locking block; 145. Cavity; 146. Spring; 147. Insert rod; 148. Pull rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1:

[0023] This embodiment aims to help solve the problem of control valve cores being easily worn by the medium, leading to decreased sealing performance and reduced control accuracy. Please refer to [link / reference needed]. Figure 1 - Figure 5 A valve core anti-erosion regulating valve includes a regulating valve body 1, a valve seat 2 fixed on the regulating valve body 1, a support 3 and a support base 4 fixed on the valve seat 2, a screw 5 threaded on the support 3, a valve stem 6 fixed inside the screw 5, a knob 7 fixed on the top of the valve stem 6, a valve core body 8 fixed on the bottom of the valve stem 6, and a sealing ring 9 fixedly sleeved on the outer ring of the valve core body 8.

[0024] A sealing seat 102 is fixed inside the regulating valve body 1. The valve core 8 is snapped into the sealing seat 102. A block 10 is provided at the bottom of the valve core 8. The block 10 has multiple through holes 11.

[0025] In this embodiment: When it is necessary to adjust the flow rate of the medium in the pipeline, the operator drives the valve stem 6 to rotate by rotating the knob 7 on the top of the valve stem 6. Since the valve stem 6 and the screw 5 are fixedly connected, and the screw 5 and the support 3 adopt a threaded engagement structure, the rotational movement of the valve stem 6 can be converted into the axial linear movement of the screw 5 along the threaded hole of the support 3, thereby driving the valve stem 6 and the valve core 8 at the bottom to complete the lifting and lowering action synchronously. The valve core 8 and the sealing seat 102 in the regulating valve body 1 are precisely engaged. As the valve core 8 rises and falls, the flow gap between it and the sealing seat 102 changes, ultimately achieving precise control of the medium flow rate.

[0026] Because the outer ring of the valve core 8 is fixedly fitted with a sealing ring 9, it can effectively fill the gap between the valve core 8 and the sealing seat 102, preventing the medium from leaking out of the gap. At the same time, the plug 10 at the bottom of the valve core 8 plays a diversion role. When the high-pressure medium flows through the area of ​​the valve core 8, the multiple through holes 11 on the plug 10 will evenly disperse the originally concentrated medium flow into multiple fine streams, reducing the impact intensity of the medium on the surface of the valve core 8.

[0027] This diversion and buffer design can effectively reduce the wear of the valve core 8 caused by media scouring, extend the service life of the valve core 8, and ensure that the regulating valve can maintain high regulation accuracy and reliable sealing performance during long-term operation. It fundamentally solves the problem of frequent maintenance and high operating costs caused by the susceptibility of traditional valve cores to scouring. Example 2:

[0028] This embodiment aims to address the problem that impurities in the medium easily adhere to the surface of the valve core 8, exacerbating erosion and wear, and potentially causing the valve core 8 to jam, thus affecting the regulating effect. This embodiment is an improvement upon Embodiment 1. For details, please refer to [link to Embodiment 1]. Figure 1 - Figure 4 The regulating valve body 1 has flanges 12 symmetrically installed on both sides. One flange 12 has a flange 2 13 installed on one end side. The flange 12 has a filter assembly 14. The filter assembly 14 includes a circular groove 143 opened in the flange 12. A filter screen 141 is snapped into the circular groove 143. The filter screen 141 has a hole 142.

[0029] A retaining block 144 is fixed inside the flange 12. A cavity 145 is opened inside the retaining block 144. A spring 146 is fixed inside the cavity 145. A plug rod 147 is fixed at the bottom of the spring 146. The plug rod 147 is inserted into the plug hole 142. A pull rod 148 is fixed on the surface of the plug rod 147.

[0030] In this embodiment: Before using this regulating valve, the filter screen 141 must be installed. Specifically, the operator first pulls the lever 148, which drives the insert rod 147 to move upward. During this process, the insert rod 147 will squeeze the spring 146 in the cavity 145 of the locking block 144, causing the insert rod 147 to fully retract into the cavity 145. Then, the filter screen 141 is aligned with the circular groove 143 of the flange 12 and pushed in, ensuring that the filter screen 141 fits tightly against the inner wall of the circular groove 143. After the filter screen 141 is fully inserted into the installation position, the lever 148 is released. The spring 146 loses its tension constraint and, with its own elastic potential energy, drives the insert rod 147 to return downward, accurately inserting it into the insertion hole 142 at the top of the filter screen 141, thereby completing the fixed installation of the filter screen 141.

[0031] After the filter screen 141 is installed, first fasten flange 2 13 to flange 1 12 with bolts, then complete the pipeline connection of the regulating valve. Connect flange 1 12 on the end side of the regulating valve body 1 to the outlet pipe, and flange 2 13 to the inlet pipe. When the medium is transported, it flows in from the flange 2 13 side and first enters the interior of flange 1 12 equipped with filter assembly 14. The filter screen 141 in the circular groove 143 of flange 1 12 will effectively intercept the medium, blocking the mixed particulate impurities on the surface of the filter screen 141. The filtered clean medium then enters the interior of the regulating valve body 1, contacts the valve core 8, and cooperates with the action of the valve core 8 to complete the flow regulation.

[0032] This pre-filter design can prevent impurity particles from impacting the valve core 8 with the medium at the source, effectively reducing the wear of impurities on the valve core 8 and the sealing ring 9, while preventing impurities from embedding in the fit gap between the valve core 8 and the sealing seat 102, ensuring the smoothness of the valve core 8's lifting and lowering adjustment, and further improving the operational stability of the regulating valve.

[0033] After prolonged use, impurities will gradually accumulate on the surface of filter screen 141, potentially affecting media flow efficiency. Therefore, timely cleaning or replacement of filter screen 141 is necessary. During maintenance, the operator simply pulls the lever 148 on the locking block 144, causing the insertion rod 147 to move upwards against the spring force of spring 146, completely disengaging the insertion rod 147 from the insertion hole 142 of filter screen 141, thus releasing the fixing constraint on filter screen 141. The filter screen 141 can then be directly removed from the circular groove 143 of flange 12 for rinsing or replacement with a new filter screen 141. When installing a new filter screen 141, repeat the initial installation steps: insert the filter screen 141 into the circular groove 143, then release the lever 148. The spring 146, under its elastic restoring action, pushes the insertion rod 147 downwards, re-inserting it into the insertion hole 142 of filter screen 141 to complete the fixing. The entire filter assembly 14 is easy and efficient to disassemble and assemble, without the need to disassemble the entire regulating valve, which greatly reduces the difficulty and time cost of maintenance.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A valve core anti-erosion regulating valve, comprising a regulating valve body (1), characterized in that: A valve seat (2) is fixed on the regulating valve body (1). A support (3) and a support base (4) are fixed on the valve seat (2). A screw (5) is threaded on the support (3). A valve stem (6) is fixed inside the screw (5). A knob (7) is fixed on the top of the valve stem (6). A valve core (8) is fixed on the bottom of the valve stem (6). A sealing ring (9) is fixedly sleeved on the outer ring of the valve core (8). Flanges (12) are symmetrically installed on both sides of the regulating valve body (1). A flange (13) is installed on one end of one of the flanges (12). A filter assembly (14) is provided inside the flange (12).

2. The valve core anti-erosion regulating valve according to claim 1, characterized in that: The regulating valve body (1) has a sealing seat (102) fixed inside, and the valve core (8) is engaged with the sealing seat (102).

3. The valve core anti-erosion regulating valve according to claim 1, characterized in that: The valve core (8) has a block (10) at the bottom, and the block (10) has multiple through holes (11).

4. The valve core anti-erosion regulating valve according to claim 1, characterized in that: The filter assembly (14) includes a circular groove (143) formed in the flange (12), a filter screen (141) is engaged in the circular groove (143), and the filter screen (141) has an insertion hole (142).

5. A valve core anti-erosion regulating valve according to claim 4, characterized in that: A locking block (144) is fixed inside the flange (12). A cavity (145) is opened inside the locking block (144). A spring (146) is fixed inside the cavity (145). A plug rod (147) is fixed at the bottom of the spring (146). A pull rod (148) is fixed on the surface of the plug rod (147).

6. A valve core anti-erosion regulating valve according to claim 5, characterized in that: The insertion rod (147) is inserted into the insertion hole (142).

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