High pressure combination valve core

Abstract

The utility model discloses a high pressure combined valve core belongs to superhigh pressure water jet sprayer parts technical field. Including the valve body, the inside of valve body has the valve cavity, and the valve core is slid in the valve cavity, and the side of valve core is installed with the connecting ring at the place near one end, and the spring is connected between connecting ring and valve cavity, and the surface of valve body is equipped with a plurality of shunt holes, and a plurality of shunt holes and valve cavity are communicated, and the outside of valve core is installed with the limit block at the place near the other end, and the inside of limit block is installed with first support ring and second support ring, and the second O ring is installed between first support ring and second support ring, and first support ring, second support ring, second O ring are on the valve core, and the side of valve body and limit block all are equipped with the recess, and all are installed with the baffle ring and first O ring in recess, and the baffle ring and first O ring are attached, and the first snap spring is installed in the valve cavity at the end face near valve body, and the inside of limit block is installed at the end face near it.

Description

Technical Field

[0001] This utility model relates to the technical field of ultra-high pressure water jet spray gun components, specifically a high pressure combined valve core. Background Technology

[0002] Ultra-high pressure water jet spray guns are widely used equipment in industry, mainly for cutting, cleaning, and material processing. The valve core, as the core component of the spray gun, controls the flow rate and pressure of the water jet, directly affecting the equipment's performance and efficiency.

[0003] Under ultra-high pressure environments, traditional valve core designs suffer from the following main problems: 1. Insufficient durability: The valve core is prone to wear under the impact of high-pressure water flow, leading to a shortened service life and increased maintenance costs. 2. Sealing issues: The sealing structure of traditional valve cores is difficult to maintain stability under ultra-high pressure, making leakage likely and affecting equipment safety and efficiency. Therefore, designing a new type of valve core with higher wear resistance and sealing performance is of great significance for improving the performance and reliability of ultra-high pressure water jet equipment. Utility Model Content

[0004] The purpose of this invention is to provide a high-pressure combined valve core to solve the problems mentioned in the background art.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0006] A high-pressure combined valve core includes a valve body with a valve cavity inside. A valve core slides within the valve cavity. A connecting ring is installed on the side of the valve core near one end. A spring connects the connecting ring and the valve cavity. The surface of the valve body has several flow-diverting holes communicating with the valve cavity. A limit block is installed on the outer side of the valve core near its other end. A first support ring and a second support ring are installed inside the limit block. A second O-ring is installed between the first and second support rings. The first support ring, the second support ring, and the second O-ring fit onto the valve core. The valve body provides the mounting base. The valve core slides in cooperation with the valve cavity. The connecting ring and the spring allow the valve core to quickly reset after being subjected to force, ensuring the timeliness and accuracy of the valve core's action. To ensure the stability of flow and pressure control; several diversion holes are connected to the valve cavity, and there are at least four sets evenly distributed circumferentially on the outside of the valve body, which can realize the uniform diversion of high-pressure water flow, avoid excessive local water flow impact, and reduce local wear on the valve core and valve body; the limiting block provides installation positioning for the first support ring, the second support ring and the second O-ring. The first support ring and the second support ring cooperate to clamp and fix the second O-ring, preventing the second O-ring from shifting or deforming under the action of high-pressure water flow. At the same time, the first support ring and the second support ring are made of polytetrafluoroethylene, which has good wear resistance and lubricity. Working together with the second O-ring, it not only enhances the sealing performance between the valve core and the limiting block, but also reduces the friction loss when the valve core slides, extends the service life of components and reduces maintenance costs.

[0007] Furthermore, both the valve body and the limiting block have grooves on their sides, and a retaining ring and a first O-ring are installed in each groove. The retaining ring and the first O-ring fit together, and the grooves on the sides of the valve body and the limiting block provide installation space for the retaining ring and the first O-ring. The retaining ring fits snugly with the first O-ring, and the retaining ring can support and protect the first O-ring, preventing the first O-ring from being squeezed out of the groove or excessively deformed under ultra-high pressure. At the same time, the first O-ring itself has good elastic sealing performance. The two work together to enhance the sealing effect between the valve body and external components, and between the limiting block and related components, preventing high-pressure water from leaking from the connection and ensuring the safety and efficiency of equipment operation.

[0008] Furthermore, a first retaining ring is installed at the end face of the valve cavity near the valve body, and at the end face of the limiting block inside the valve cavity near its end face. The first retaining ring at the end face of the valve cavity near the valve body cooperates with the valve cavity to axially limit the valve core, connecting ring, and spring, preventing the valve core from dislodging from the end face of the valve cavity during sliding and ensuring the stability of the valve core's movement. The first retaining ring at the end face of the limiting block cooperates with the limiting block to axially fix the first support ring, the second support ring, and the second O-ring, preventing these sealing support components from axially shifting under the impact of high-pressure water flow or the sliding of the valve core, ensuring the stability of the sealing structure and support structure, and thus ensuring the normal operation and sealing effect of the valve core.

[0009] Furthermore, a second retaining ring is installed on the outer side of the valve core near the limiting block, and the second retaining ring is located outside the limiting block.

[0010] Furthermore, there are at least four sets of diversion holes, which are evenly distributed circumferentially on the outside of the valve body. The at least four sets of diversion holes cooperate with the valve body and are evenly distributed circumferentially on the outside of the valve body, which can increase the number of water diversion channels and the total flow area, making the high-pressure water flow more evenly distributed in the valve cavity, avoiding local pressure concentration caused by excessively high local water flow velocity. At the same time, the even diversion can reduce the impact force of the water flow on the valve core surface, reduce the wear rate of the valve core, and extend the service life of the valve core. In addition, the evenly distributed diversion holes can also make the water flow more stable and improve the working stability of the equipment.

[0011] Furthermore, the first and second support rings are made of polytetrafluoroethylene (PTFE). These PTFE support rings cooperate with the second O-ring, valve core, and limiting block. PTFE material has excellent wear resistance and self-lubricating properties, which can reduce the sliding friction between the first and second support rings and the valve core and limiting block, reducing wear on various components and extending service life. Simultaneously, this material has good chemical stability and high-temperature resistance, maintaining structural stability under ultra-high pressure operating environments and preventing a decrease in support and sealing effects due to changes in material properties, thereby ensuring smooth valve core sliding and reliable sealing.

[0012] Furthermore, the valve core wall is coated with a hard alloy coating, which has extremely high hardness and wear resistance. This coating can significantly enhance the wear resistance of the valve core wall, resist the impact of high-pressure water flow and wear caused by sliding contact with other components, extend the service life of the valve core, and reduce problems such as increased sealing gap and decreased flow and pressure control accuracy caused by valve core wear, thereby reducing equipment maintenance costs and downtime.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: In terms of durability, the hard alloy coating on the valve core wall enhances its wear resistance; the first and second support rings are made of polytetrafluoroethylene, reducing frictional loss with the valve core and the limiting block; at the same time, at least four sets of circumferentially evenly distributed diversion holes achieve uniform water flow distribution, reducing local impact wear on the valve core. The cooperation of these components improves the wear resistance of the valve core and the overall structure, extends the service life, and reduces maintenance costs. In terms of sealing, the retaining rings in the side grooves of the valve body and the limiting block fit snugly with the first O-ring to prevent deformation and overflow, ensuring a seal at the connection. The first and second support rings inside the limiting block clamp and fix the second O-ring, preventing displacement under high pressure and ensuring a seal between the valve core and the limiting block. Furthermore, the first and second retaining rings axially fix the internal components and the limiting block, ensuring the stable position of the sealing structure. The synergistic effect of these components enables the high-pressure combined valve core to maintain good sealing performance under ultra-high pressure environments, preventing leakage and ensuring equipment safety and operational efficiency. Simultaneously, the spring's connection ring with the valve core ensures timely valve core reset, improving the stability of flow and pressure control and further optimizing the performance and reliability of the ultra-high pressure water jet equipment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the high-pressure combined valve core disclosed in an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the first side structure of the high-pressure combined valve core disclosed in an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the second side structure of the high-pressure combined valve core disclosed in an embodiment of this utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of the high-pressure combined valve core disclosed in an embodiment of this utility model;

[0018] Figure 5 This is a top view of the high-pressure combined valve core disclosed in an embodiment of this utility model.

[0019] In the diagram: 1. Valve body; 2. Retaining ring; 3. First O-ring; 4. Valve core; 5. Spring; 6. First snap ring; 7. Diverter hole; 8. First support ring; 9. Second O-ring; 10. Second support ring; 11. Limiting block; 12. Second snap ring. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-5 This utility model provides a technical solution: a high-pressure combined valve core, including a valve body 1, an internal valve cavity, a valve core 4 sliding within the valve cavity, a connecting ring installed on one side of the valve core 4 near one end, a spring 5 connecting the connecting ring and the valve cavity, a plurality of diversion holes 7 opening on the surface of the valve body 1, and the plurality of diversion holes 7 communicating with the valve cavity, a limiting block 11 installed on the outer side of the valve core 4 near one end, a first support ring 8 and a second support ring 10 installed inside the limiting block 11, and a second O-ring 9 installed between the first support ring 8 and the second support ring 10, the first support ring 8, the second support ring 10, and the second O-ring 9 fitting onto the valve core 4, firstly providing a sliding track for the valve core 4 through the valve cavity of the valve body 1, when high-pressure water flows into the valve cavity, the water pressure acts on the valve core 4, pushing the valve core 4 to slide within the valve cavity, simultaneously The valve core 4 compresses the spring 5 through the connecting ring, allowing the spring 5 to store elastic potential energy. Then, as the valve core 4 slides, the degree of communication between the valve cavity and the diversion hole 7 changes, thereby regulating the water flow and pressure. The limiting block 11 restricts the sliding stroke of the valve core 4, preventing excessive sliding of the valve core 4 and damage to the components. During this process, the first support ring 8 and the second support ring 10 fitted on the valve core 4 always limit and fix the second O-ring 9, ensuring that the second O-ring 9 fits tightly against the contact surface of the valve core 4 and the limiting block 11, preventing high-pressure water leakage. At the same time, the lubrication of the first support ring 8 and the second support ring 10 reduces the friction between the valve core 4 and the limiting block 11 when sliding. When the water pressure decreases or disappears, the spring 5 releases its elastic potential energy, driving the valve core 4 to slide back and reset through the connecting ring, restoring the initial flow and pressure control state.

[0022] As an embodiment of this utility model, further, grooves are provided on the sides of both the valve body 1 and the limiting block 11, and a retaining ring 2 and a first O-ring 3 are installed in each groove. The retaining ring 2 and the first O-ring 3 are fitted together. First, the retaining ring 2 and the first O-ring 3 are installed in the grooves on the sides of the valve body 1 and the limiting block 11 in sequence, so that the retaining ring 2 and the first O-ring 3 are tightly fitted together. When the high-pressure combined valve core is assembled and connected with other components, the external components will exert a squeezing force on the retaining ring 2 and the first O-ring 3. Then, the retaining ring 2, with its own rigid support characteristics, prevents the first O-ring 3 from deforming and overflowing out of the groove. At the same time, the first O-ring 3 undergoes elastic deformation under the squeezing action, tightly filling the gap between the groove and the external components to form a sealing surface, thereby blocking the leakage channel of high-pressure water flow and achieving a reliable seal at the connection.

[0023] As an embodiment of this utility model, a first retaining spring 6 is further installed in the valve cavity near the end face of the valve body 1 and inside the limiting block 11 near its end face. The first retaining spring 6 is first installed at a preset position in the valve cavity near the end face of the valve body 1, and at the same time, a first retaining spring 6 is also installed at a preset position inside the limiting block 11 near its end face. When the valve core 4 slides in the valve cavity and moves towards the end face of the valve body 1, the connecting ring driven by the valve core 4 will contact the first retaining spring 6 in the valve cavity. The first retaining spring 6 blocks the connecting ring from continuing to move through its own elastic clamping force, thereby limiting the maximum sliding stroke of the valve core 4 and preventing the valve core 4 from falling out. At the same time, the first retaining spring 6 inside the limiting block 11 will press against the first support ring 8, and transmit the force through the first support ring 8, so that the first support ring 8, the second support ring 10 and the second O-ring 9 are always kept in the preset installation position, avoiding axial movement and ensuring the stable performance of the sealing and support functions.

[0024] As an embodiment of the present invention, a second retaining ring 12 is further installed on the outer side of the valve core 4 near the limiting block 11, and the second retaining ring 12 is located outside the limiting block 11.

[0025] As an embodiment of this utility model, further, there are at least four sets of diversion holes 7, which are evenly distributed circumferentially on the outside of the valve body 1. First, at least four sets of diversion holes 7 are opened on the outside of the valve body 1 in a circumferentially evenly distributed manner, and it is ensured that all diversion holes 7 are connected to the valve cavity. The ultra-high pressure water flow enters the valve cavity through the water inlet at the left end of the valve body 1. The water pressure directly acts on the sealing surface at the left end of the valve core 4. When the water pressure is greater than the elastic force of the spring 5, the valve core 4 begins to overcome the spring force and slide to the right along the valve cavity. The connecting ring moves to the right synchronously with the valve core 4 and compresses the spring. Spring 5 stores elastic potential energy. As valve core 4 moves to the right, the sealing surface at the left end of valve core 4 separates from the inner wall of the water inlet of valve body 1. The valve cavity and the diversion hole 7 gradually form a connecting channel. Water flows from the valve cavity into each diversion hole 7 and finally into the annular guide channel between the outer side of valve body 1 and the spray gun housing. Since the number of diversion holes 7 is sufficient and evenly distributed, the water flow will be evenly distributed to each diversion hole 7, avoiding excessive flow and pressure on a single diversion hole 7. Then the water flow is sprayed out through the diversion hole 7 to achieve stable diversion and reduce the local impact of water flow on the surface of valve core 4.

[0026] As one embodiment of the present invention, the first support ring 8 and the second support ring 10 are made of polytetrafluoroethylene.

[0027] As an embodiment of this utility model, the wall surface of the valve core 4 is further coated with a hard alloy coating.

[0028] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. A high-pressure combined valve core, characterized in that, The valve body (1) includes a valve cavity inside the valve body (1), a valve core (4) slides inside the valve cavity, a connecting ring is installed on the side of the valve core (4) near one end, a spring (5) is connected between the connecting ring and the valve cavity, a plurality of diversion holes (7) are opened on the surface of the valve body (1), and the plurality of diversion holes (7) are connected to the valve cavity, a limit block (11) is installed on the outer side of the valve core (4) near the other end, a first support ring (8) and a second support ring (10) are installed inside the limit block (11), and a second O-ring (9) is installed between the first support ring (8) and the second support ring (10), and the first support ring (8), the second support ring (10) and the second O-ring (9) are fitted on the valve core (4).

2. A high-pressure combined valve core according to claim 1, characterized in that, The valve body (1) and the limiting block (11) are both provided with grooves on their sides, and a retaining ring (2) and a first O-ring (3) are installed in the grooves, with the retaining ring (2) and the first O-ring (3) fitting together.

3. A high-pressure combined valve core according to claim 1, characterized in that, The valve cavity is equipped with a first retaining ring (6) at the end face near the valve body (1), and the limit block (11) is equipped with a first retaining ring (6) at the end face near its end face.

4. A high-pressure combined valve core according to claim 1, characterized in that, A second retaining ring (12) is installed on the outer side of the valve core (4) near the limiting block (11), and the second retaining ring (12) is located outside the limiting block (11).

5. A high-pressure combined valve core according to claim 1, characterized in that, The number of the aforementioned diversion holes (7) is at least four groups, and they are evenly distributed circumferentially on the outside of the valve body (1).

6. A high-pressure combined valve core according to claim 1, characterized in that, The first support ring (8) and the second support ring (10) are made of polytetrafluoroethylene.

7. A high-pressure combined valve core according to claim 1, characterized in that, The wall surface of the valve core (4) is coated with a hard alloy coating.

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