A valve body with a spacer sleeve structure

Abstract

This utility model relates to the field of fluid control technology, specifically a valve body with a spacer structure, including a valve body and a valve core. The valve core is slidably connected within the valve body, and multiple sealing rings are spaced apart on the outer circumferential surface of the valve core. The sealing rings abut against the inner wall of the valve body, and spacers are provided between adjacent sealing rings. The outer diameter of the spacers is smaller than the outer diameter of the sealing rings and does not fit against the inner wall of the valve body. The spacers include a first flange, a second flange, and a rib group located between the first and second flanges. The first and second flanges abut against adjacent sealing rings, respectively. The rib group includes a first rib and a second rib, which are staggered and form a hollow section between them. A gap is formed between the spacer and the inner wall of the valve body. The sealing rings expand and fill the gap when subjected to axial pressure. This structure effectively inhibits sealing ring deformation, extends service life, and ensures unobstructed fluid flow.

Description

Technical Field

[0001] This utility model relates to the field of fluid control technology, specifically a valve body with a spacer structure. Background Technology

[0002] In existing valve body structures, the valve core is typically equipped with multiple sealing rings to achieve fluid sealing. These sealing rings are in direct contact with the inner wall of the valve body. During the reciprocating motion of the valve core, the outer side of the sealing ring experiences resistance in the opposite direction to the valve core's movement, while the inner side of the sealing ring moves with the valve core. Due to the lack of support, the imbalance of forces between the inner and outer sides of the sealing ring during repeated friction causes deformation. Once deformed, this leads to sealing failure and reduced sealing performance. To improve the service life of the sealing rings without changing their material or size, it is necessary to support them and control their deformation. Therefore, designing a mechanism in the valve body to limit the movement of multiple sealing rings, preventing deformation while ensuring unobstructed fluid flow, is a technical problem that needs to be solved. Utility Model Content

[0003] The purpose of this invention is to provide a valve body with a spacer structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a valve body with a spacer structure, comprising a valve body and a valve core, wherein the valve core is slidably connected within the valve body, and a plurality of sealing rings are spaced apart on the outer circumferential surface of the valve core, wherein the sealing rings abut against the inner wall of the valve body, and a spacer is provided between adjacent sealing rings, wherein the outer diameter of the spacer is smaller than the outer diameter of the sealing ring and does not fit against the inner wall of the valve body, wherein the spacer includes a first flange edge, a second flange edge, and a rib group located between the first flange edge and the second flange edge, wherein the first flange edge and the second flange edge abut against adjacent sealing rings respectively, wherein the rib group includes a first rib and a second rib, wherein the first rib and the second rib are staggered and a hollow portion is formed between the first rib and the second rib, wherein a gap is formed between the spacer and the inner wall of the valve body, and the sealing rings expand and fill the gap when subjected to axial pressure.

[0005] Preferably, the width of the second rib is 1.5-2 times the width of the first rib.

[0006] Preferably, the width of the gap is 0.05-0.3 mm.

[0007] Preferably, the spacer is made of rigid engineering plastic.

[0008] Preferably, the sealing ring is a rubber O-ring with a circular cross-section.

[0009] Compared with existing technologies, this utility model provides a valve body with a spacer structure, which has the following advantages: The stacked design of the spacer utilizes the flange edges on both sides to axially limit adjacent sealing rings, effectively suppressing the torsional deformation of the sealing rings under high pressure or reciprocating motion; the gap formed by the spacer's outer diameter being smaller than the valve body's inner diameter allows the sealing ring to radially expand and fill the gap when under pressure, dynamically enhancing the sealing performance; the hollowed-out portion formed by the staggered arrangement of ribs ensures free flow of fluid within the valve cavity, preventing pressure buildup; and the spacer is made of rigid engineering plastic, providing sufficient structural strength while reducing frictional loss. This structure extends the life of the sealing rings while simultaneously achieving lightweight valve body and efficient fluid control. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Explanation of reference numerals in the attached drawings: 1. Valve body; 2. Valve core; 3. Sealing ring; 4. Spacer; 41. First flange edge; 42. Second flange edge; 43. Rib group; 431. First rib; 432. Second rib; 5. Hollowed-out part; 6. Gap. Detailed Implementation

[0012] The technical solutions of the present utility model will now be described with reference to the accompanying drawings in the embodiments of the present utility model:

[0013] like Figure 1As shown, this utility model provides a valve body with a spacer structure, including a valve body 1 and a valve core 2. The valve core 2 is slidably connected inside the valve body 1. Multiple sealing rings 3 are spaced on the outer circumferential surface of the valve core 2. The sealing rings 3 are rubber O-rings with a circular cross-section. The sealing rings 3 are kept in contact with the inner wall of the valve body 1 to form a basic sealing layer. A spacer 4 is provided between adjacent sealing rings 3, forming a stacked structure of sealing ring 3-spacer 4-sealing ring 3-spacer 4-sealing ring 3-spacer 4-sealing ring 3-spacer 4-sealing ring 3-spacer 4-sealing ring 3-spacer 4-sealing ring 3-spacer 4-sealing ring 3. The spacer 4 is made of hard engineering plastic. The outer diameter of the spacer 4 is smaller than the outer diameter of the sealing ring 3 and does not fit against the inner wall of the valve body 1. The spacer 4 includes a first flange edge 41, a second flange edge 42, and a rib group 43 located between the first flange edge 41 and the second flange edge. The diameter of the first flange edge 41 and the second flange edge 42 is 0.5mm smaller than the diameter of the sealing ring 3. The first flange edge 41 and the second flange edge 42 respectively abut against the adjacent sealing ring 3, restricting the axial movement of the sealing ring 3 during the movement of the valve core 2 and preventing uneven wear and deformation. The rib assembly 43 includes a first rib 431 and a second rib 432. The width of the first rib 431 is L1, and the width of the second rib 432 is L2, where L2 is 1.5-2 times the width of L1. This difference in rib width enhances the pressure resistance of the spacer. The second rib 432 bears the main load, while the first rib 431 helps maintain structural stability. The first rib 431 and the second rib 432 are arranged alternately, forming a hollow section 5 between them to ensure fluid can flow across areas and prevent the spacer from obstructing the flow of the medium. A gap 6 is formed between the spacer 4 and the inner wall of the valve body 1. The width of the gap 6 is D, which is 0.05-0.3 mm. The sealing ring 3 expands and fills the gap 6 when subjected to axial pressure, thus improving transient sealing performance.

[0014] Working process: The sealing ring 3 is in direct contact with the inner wall of the valve body 1. During the reciprocating motion of the valve core 2, the outer side of the sealing ring 3 will experience a resistance, which is opposite to the direction of movement of the valve core 2. The inner side of the sealing ring 3 moves together with the valve core 2. This utility model provides a spacer 4 between adjacent sealing rings 3. The spacer 4 is made of hard engineering plastic. The outer diameter of the spacer 4 is smaller than the outer diameter of the sealing ring 3 and does not fit against the inner wall of the valve body 1. The spacer 4 includes an integrally formed first flange edge 41, a second flange edge 42, and a rib group 43. The first flange edge 41 and the second flange edge 42 are used for... The rib group 43 abuts against and supports the corresponding sealing ring 3. It includes a first rib 431 and a second rib 432. The difference in width between the first rib 431 and the second rib 432 can enhance the pressure resistance of the spacer 4 while ensuring the smooth flow of air. During the movement of the valve core 2, the rubber material of the sealing ring 3 expands radially to fill the gap 6 between the spacer 4 and the valve body 1. The rib group 43 of the spacer 4 provides axial support. During repeated friction, the first flange edge 41 and the second flange edge 42 prevent the sealing ring 3 from deforming excessively, thereby improving the service life of the sealing ring 3. The hollow part 5 maintains the smooth flow of fluid.

[0015] This invention utilizes a layered design of spacers to axially limit adjacent sealing rings using flanges on both sides, effectively suppressing torsional deformation of the sealing rings under high pressure or reciprocating motion. The gap formed by the spacer's outer diameter being smaller than the valve body's inner diameter allows the sealing rings to radially expand and fill the gap under pressure, dynamically enhancing sealing performance. The hollowed-out portion formed by the staggered arrangement of ribs ensures free flow of fluid within the valve cavity, preventing pressure buildup. The spacers are made of rigid engineering plastic, providing sufficient structural strength while reducing frictional loss. This structure extends the lifespan of the sealing rings while simultaneously achieving lightweight valve body and efficient fluid control.

[0016] The above embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A valve body with a spacer sleeve structure, comprising a valve body (1) and a valve core (2), the valve core (2) being slidably connected in the valve body (1), characterized in that Multiple sealing rings (3) are spaced apart on the outer circumferential surface of the valve core (2). The sealing rings (3) abut against the inner wall of the valve body (1). A spacer (4) is provided between adjacent sealing rings (3). The outer diameter of the spacer (4) is smaller than the outer diameter of the sealing rings (3) and does not fit against the inner wall of the valve body (1). The spacer (4) includes a first flange edge (41), a second flange edge (42), and a rib group (43) located between the first flange edge (41) and the second flange edge. 41) and the second flange edge (42) respectively abut against the adjacent sealing ring (3). The rib group (43) includes a first rib (431) and a second rib (432). The first rib (431) and the second rib (432) are arranged alternately and a hollow part (5) is formed between the first rib (431) and the second rib (432). A gap (6) is formed between the spacer (4) and the inner wall of the valve body (1). The sealing ring (3) expands and fills the gap (6) when it is axially compressed.

2. The valve body with the spacer sleeve structure according to claim 1, characterized in that The width of the second rib (432) is 1.5-2 times the width of the first rib (431).

3. The valve body with the spacer sleeve structure according to claim 1, characterized in that The width of the gap (6) is 0.05-0.3mm.

4. The valve body with the spacer structure according to claim 1, characterized in that The material of the spacer (4) is rigid engineering plastic.

5. The valve body with the spacer structure according to claim 1, characterized in that The sealing ring (3) is a rubber O-ring with a circular cross-section.

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