A valve structure with sand prevention function

Abstract

A valve structure with sand prevention function, the valve cover is provided with arc flow guide groove, the valve core and the valve seat are provided with adjustable sealing ring, the valve rod outer periphery is provided with annular sand prevention cavity, the valve body and the valve cover junction are provided with double layer nesting structure, and the flexible sealing pad is embedded in the junction, the sealing ring and the annular sand prevention cavity form linkage cooperation in space, the utility model discloses adjustable sealing ring between valve core and valve seat and annular sand prevention cavity of valve rod outer periphery form linkage cooperation, combine sand prevention convex on sealing ring, significantly improve sand prevention effect.In addition, the double layer nesting structure and the flexible sealing pad of the valve body and the valve cover junction further enhance the sealing property and the sand prevention ability, in general, the utility model discloses multiple sand prevention design and structure optimization, not only prolongs valve service life, also improved the operation reliability under the sand environment, is applicable to the fluid control demand under complex working condition.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve structure with sand prevention function. Background Technology

[0002] In industrial production and fluid control, valves, as key control components, are widely used in various pipeline systems to regulate or cut off the flow of media. However, under certain special operating conditions, such as in media environments containing sand or other solid particles, valves often face serious wear and sealing failure problems. Especially in desert areas or high-dust environments, sand particles can easily enter the valve, leading to a decrease in the sealing performance between the valve core and the valve seat, and even causing valve stem jamming or leakage at the valve body connection. These problems not only affect the normal operation of the valve, but also shorten the service life of the equipment, increase maintenance costs and safety hazards. How to effectively prevent sand particles from entering the critical parts of the valve, while ensuring the sealing performance and operational reliability of the valve, has become an urgent technical problem to be solved.

[0003] Traditional valve design often focuses on improving the sealing structure or the wear resistance of materials, but often neglects the guiding role of the external structure on the flow of sand particles and the comprehensive optimization of the internal sand prevention mechanism.

[0004] Therefore, it is essential to provide a valve structure with sand prevention function to address the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a valve structure with sand-proof function. The arc-shaped guide groove design on the valve cover effectively guides fluid and reduces sand deposition. Simultaneously, the adjustable sealing ring between the valve core and valve seat, and the annular sand-proof cavity on the outer periphery of the valve stem, work in conjunction with the sand-proof protrusions on the sealing ring to significantly improve the sand-proof effect. Furthermore, the double-layer nested structure and flexible sealing gasket at the connection between the valve body and valve cover further enhance sealing and sand-proof capabilities. Overall, this invention, through multiple sand-proof designs and structural optimizations, not only extends the valve's service life but also improves operational reliability in sandy environments, making it suitable for fluid control needs under complex operating conditions.

[0006] The above-mentioned objectives of this utility model are achieved through the following technical means.

[0007] A valve structure with sand prevention function is provided, including a valve body, a valve cover, a valve core, a valve seat, a sealing ring, and a valve stem. The valve body and the valve cover are connected to form the valve body. The valve core is disposed inside the valve body and cooperates with the valve seat. The valve stem is connected to the valve core to drive its movement. The valve cover is provided with an arc-shaped flow guide groove. An adjustable sealing ring is provided between the valve core and the valve seat. An annular sand prevention cavity is provided on the outer periphery of the valve stem. A double-layer nested structure is provided at the connection between the valve body and the valve cover, and a flexible sealing gasket is embedded at the connection. The sealing ring and the annular sand prevention cavity form a linkage cooperation in space.

[0008] Specifically, the arc-shaped guide grooves on the valve cover are distributed in a spiral shape, and the depth of the guide grooves gradually decreases radially.

[0009] Specifically, the sealing ring is connected to the valve core via an adjusting thread, and the outer circumference of the sealing ring is provided with multiple sand-proof protrusions.

[0010] Specifically, multiple partition plates are provided in the annular sand-proof cavity on the outer periphery of the valve stem, and the partition plates are evenly distributed along the circumference of the annular sand-proof cavity.

[0011] Specifically, the double-layer nested structure of the valve body and valve cover includes an inner groove and an outer flange, with a sealing space formed between the inner groove and the outer flange.

[0012] Specifically, the flexible sealing gasket is embedded in the sealing space of the double-nested structure, and the inner side of the flexible sealing gasket is provided with a corrugated contact surface.

[0013] The arc-shaped flow guide groove design on the valve cover of this utility model effectively guides fluid and reduces sand deposition. Simultaneously, the adjustable sealing ring between the valve core and valve seat, along with the annular sand-proof cavity on the outer periphery of the valve stem, work in conjunction with the sand-proof protrusions on the sealing ring to significantly improve the sand-proof effect. Furthermore, the double-layer nested structure and flexible sealing gasket at the connection between the valve body and valve cover further enhance sealing and sand-proof capabilities. Overall, this utility model, through multiple sand-proof designs and structural optimizations, not only extends the valve's service life but also improves operational reliability in sandy environments, making it suitable for fluid control needs under complex operating conditions. Attached Figure Description

[0014] The present invention will be further described with reference to the accompanying drawings, but the content of the drawings does not constitute any limitation on the present invention.

[0015] Figure 1 This is a front view of a valve structure with sand-proof function according to this utility model.

[0016] Figure 2 This utility model relates to a valve structure with sand-proof function. Figure 1 Schematic diagram of the structure at point A in the middle.

[0017] Figure 3 This is a schematic diagram of the sealing ring in a valve structure with sand prevention function according to this utility model.

[0018] Figure 4 This is a partial structural diagram of the valve cover in a valve structure with sand prevention function according to this utility model.

[0019] from Figures 1 to 4 Including:

[0020] 1. Valve body;

[0021] 2. Valve cover;

[0022] 3. Valve core;

[0023] 4. Valve seat;

[0024] 5. Valve stem;

[0025] 6. Arc-shaped flow guide channel;

[0026] 7. Sealing ring;

[0027] 8. Annular sand-proof cavity;

[0028] 9. Flexible sealing gasket;

[0029] 10. Adjusting thread;

[0030] 11. Sand-proof protrusions;

[0031] 12. Divider;

[0032] 13. Inner card slot;

[0033] 14. Outer flange;

[0034] 15. Corrugated contact surface. Detailed Implementation

[0035] The present invention will be further described in conjunction with the following embodiments.

[0036] Example 1.

[0037] like Figure 1-4 As shown, a valve structure with sand prevention function is provided by this utility model. The valve structure with sand prevention function includes a valve body 1, a valve cover 2, a valve core 3, a valve seat 4, a sealing ring 7, and a valve stem 5. The valve body 1 and the valve cover 2 are fixedly connected by a connecting structure to form the valve body, which is used to accommodate internal components and provide a fluid passage. The valve core 3 is set inside the valve body 1 and cooperates with the valve seat 4 to control the flow of fluid. The valve stem 5 is connected to the valve core 3 and drives the valve core 3 to move axially through an external driving device to realize the opening and closing function of the valve.

[0038] The outer surface of the valve body 1 is designed with a streamlined structure, specifically including multiple smoothly transitioned curved surfaces. These curved surfaces are distributed along the axial direction of the valve body 1. This streamlined design can effectively reduce the accumulation of sand and dust on the outer surface of the valve body 1, reduce the possibility of sand particles adhering, and thus improve the durability of the valve in sandy and dusty environments.

[0039] The valve cover 2 is provided with an arc-shaped guide groove 6. The guide groove is distributed in a spiral shape and the groove depth gradually decreases in the radial direction. This design allows sand and dust to be guided away from the surface of the valve cover 2 by the guide groove, avoiding the accumulation of sand particles on the top of the valve cover 2 or entering the valve. At the same time, the spiral distribution of the guide groove can enhance the guiding effect of fluid or airflow, further reducing the risk of sand and dust intrusion.

[0040] An adjustable sealing ring 7 is provided between the valve core 3 and the valve seat 4. The sealing ring 7 is connected to the valve core 3 through the adjusting thread 10. The user can adjust the position of the sealing ring 7 according to the actual use needs to optimize the sealing effect. Multiple sand-proof protrusions 11 are provided on the outer periphery of the sealing ring 7. These sand-proof protrusions 11 form a labyrinth-type sealing channel with the inner wall of the valve seat 4. The sealing channel extends axially. This labyrinth structure can effectively prevent sand particles from entering the valve through the sealing gap, further improving the sand-proof performance.

[0041] An annular sand-proof cavity 8 is provided on the outer periphery of the valve stem 5. Multiple partition plates 12 are provided inside the annular sand-proof cavity 8. The partition plates 12 are evenly distributed along the circumference of the annular sand-proof cavity 8, dividing the annular sand-proof cavity 8 into multiple small chambers. This effectively captures sand particles that may intrude, preventing them from further entering critical parts of the valve. It also reduces the interference of sand particles on the movement of the valve stem 5. The sealing ring 7 and the annular sand-proof cavity 8 are spatially linked. That is, through reasonable position design, sand particles are blocked at the sealing ring 7 and then guided into the annular sand-proof cavity 8, further improving the overall sand-proof effect.

[0042] The connection between valve body 1 and valve cover 2 is provided with a double-layer nested structure, specifically including an inner groove 13 and an outer flange 14. The inner groove 13 is located at the upper end of valve body 1, and the outer flange 14 is located at the lower end of valve cover 2. A sealing space is formed between the inner groove 13 and the outer flange 14. A flexible sealing gasket 9 is embedded in the sealing space. The inner side of the flexible sealing gasket 9 is provided with a corrugated contact surface 15. The corrugated contact surface 15 can increase the contact area and sealing effect, effectively preventing sand particles from entering the valve through the gap at the connection.

[0043] In terms of working principle, the valve structure of this utility model achieves adaptability to sand and dust environments through multiple sand-proof designs. When the valve is in a sand and dust environment, the streamlined outer surface of the valve body 1 and the spiral guide groove of the valve cover 2 work together to reduce the accumulation of sand and dust on the valve surface; the labyrinth-type sealing channel of the sealing ring 7 and the annular sand-proof cavity 8 of the valve stem 5 effectively prevent sand particles from intruding into the internal key components; the double-layer nested structure and flexible sealing gasket 9 at the connection between the valve body 1 and the valve cover 2 further enhance the sealing of the connection part and prevent sand particles from entering through gaps.

[0044] The arc-shaped guide groove 6 on the valve cover 2 of this utility model can effectively guide the fluid and reduce sand deposition. At the same time, the adjustable sealing ring 7 between the valve core 3 and the valve seat 4 and the annular anti-sand cavity 8 on the outer periphery of the valve stem 5 form a linkage, which, together with the anti-sand protrusion 11 on the sealing ring 7, significantly improves the anti-sand effect. In addition, the double-layer nested structure and flexible sealing gasket 9 at the connection between the valve body 1 and the valve cover 2 further enhance the sealing and anti-sand capabilities. Overall, this utility model, through multiple anti-sand designs and structural optimizations, not only extends the service life of the valve but also improves the operational reliability in sandy environments, making it suitable for fluid control needs under complex working conditions.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A valve structure with sand-proof function, comprising a valve body, a valve cover, a valve core, a valve seat, a sealing ring, and a valve stem, wherein the valve body and the valve cover are connected to form a valve body, the valve core is disposed inside the valve body and cooperates with the valve seat, and the valve stem is connected to the valve core to drive its movement, characterized in that: The valve cover is provided with an arc-shaped flow guide groove, the valve core and the valve seat are provided with an adjustable sealing ring, the valve stem is provided with an annular anti-sand cavity, the valve body and the valve cover are provided with a double-layer nested structure, and a flexible sealing gasket is embedded at the connection. The sealing ring and the annular anti-sand cavity are spatially linked and cooperate.

2. The valve structure with sand-proof function according to claim 1, characterized in that: The arc-shaped guide grooves on the valve cover are spirally distributed, and the depth of the guide grooves gradually decreases radially.

3. A valve structure with sand-proof function according to claim 2, characterized in that: The sealing ring is connected to the valve core via an adjusting thread, and the outer circumference of the sealing ring is provided with multiple sand-proof protrusions.

4. A valve structure with sand-proof function according to claim 3, characterized in that: Multiple partition plates are provided in the annular sand-proof cavity on the outer periphery of the valve stem, and the partition plates are evenly distributed along the circumference of the annular sand-proof cavity.

5. A valve structure with sand-proof function according to claim 4, characterized in that: The double-layer nested structure of the valve body and valve cover includes an inner groove and an outer flange, and a sealing space is formed between the inner groove and the outer flange.

6. A valve structure with sand-proof function according to claim 5, characterized in that: The flexible sealing gasket is embedded in the sealing space of the double-layer nested structure, and the inner side of the flexible sealing gasket is provided with a corrugated contact surface.

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