Valve core component of corrugated pipe type double-base sleeve valve

A spool component and bellows technology, applied in the structural field of double-seat sleeve valve spool components, can solve the problems of unreliable medium sealing and large leakage, achieve reliable effect, reduce shape and position tolerance requirements, uniform ratio pressure effect

Inactive Publication Date: 2015-03-11
申宝光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention aims at the disadvantages of unreliable sealing of the valve to the medium and large leakage due to the cooperation between the valve core assembly and the two valve seats of the traditional double-seat sleeve valve, and provides a new double-seat sleeve valve valve core assembly structure. The double-seat sleeve valve with a spool assembly can solve this shortcoming of the traditional double-seat sleeve valve

Method used

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  • Valve core component of corrugated pipe type double-base sleeve valve
  • Valve core component of corrugated pipe type double-base sleeve valve
  • Valve core component of corrugated pipe type double-base sleeve valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment one: if image 3 As shown, the two ends of the bellows are respectively connected to the upper valve core body and the lower valve core body with a sealing contact surface to form a composite valve core with two sealing contact surfaces. Both valve core bodies are provided with medium passage holes. The valve stem and the upper valve core body are connected by the split ring on the valve stem and the inner hexagon nut to form a valve core assembly. The lower valve core body of the valve core assembly is a free end and adopts a ring structure.

[0027] In this connection, the valve stem and the composite valve core can be rotated to meet the needs of the actuator connected to the valve when the valve stem needs to be rotated, such as manual actuators and multi-turn automatic actuators.

[0028] When the valve with this spool assembly structure is closing, the spool assembly moves down as a whole. First, the lower sealing contact surface contacts the sealing co...

Embodiment 2

[0030] Embodiment two: if Figure 4 As shown, the two ends of the bellows are respectively connected to the upper valve core body and the lower valve core body with a sealing surface to form a composite valve core with two sealing contact surfaces. Both valve core bodies are provided with medium passage holes. The stem is welded on the upper valve core body to form a fixed connection to form a valve core assembly. The valve stem extends downward for a section and forms a sliding fit with the lower valve core body to reduce vibration. The lower valve core body adopts a sliding fit Mesopore structure.

[0031] The closing action of the valve and the state of the bellows at maximum opening and closing are the same as those in the first embodiment.

Embodiment 3

[0032] Embodiment three: as Figure 5 As shown, the two ends of the bellows are respectively connected to the upper valve core body and the lower valve core body with a sealing contact surface to form a composite valve core with two sealing contact surfaces. Both valve core bodies are provided with medium passage holes. It is set on the valve stem, and then fixedly connected with the nut 13 through the thread on the valve stem, so that the composite valve core is positioned on the axial direction of the valve stem when the lower valve core body and the valve stem are in a sliding fit state. The bellows should be pre-compressed. It is also possible to add an adjustment sleeve 14 set on the valve stem to adjust the two lengths so that the recompression of the bellows when the valve is closed is as small as possible, which can save space to the greatest extent and improve the valve's alignment. The sensitivity of the motion response of the spool assembly.

[0033] The closing a...

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PUM

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Abstract

The invention discloses a valve core component of a corrugated pipe type double-base sleeve valve. A traditional valve core in a traditional valve core component connected by a valve rod and a valve core is changed to an upper valve core body and a lower valve core body, respectively connected to two ends of a corrugated pipe and having respective sealing contact surfaces, to form a compound valve core with two sealing contact surfaces. In the valve core component, when the valve is closed, a medium channel for flowing a medium through two ends in the axial direction of the valve rod on the upper valve core body and the lower valve core body to form a balance structure. In the double-base sleeve valve using the valve core, as the corrugated pipe is arranged between the two sealing contact surfaces of the core component, the rigidity is lower, the pressure on the two sealing surfaces formed by fitting the valve core component and the two valve bases is easily controlled when the valve is closed, the conditions of realizing reliable sealing by the two sealing surfaces are satisfied to realize reliable sealing of the valve, and the problems of unreliable sealing and higher leakage quantity of a traditional double-base sleeve valve are solved.

Description

technical field [0001] The invention relates to a structure of a valve core assembly of a double-seat sleeve valve, in particular to a valve core assembly of a double-seat sleeve valve formed by connecting a valve stem and a compound valve core. Composite spool refers to a spool with two sealing contact surfaces formed by connecting the two ends of the bellows to the upper spool body and the lower spool body, each with a sealing contact surface. At the same time, there is a medium passage for the medium to flow through the two ends of the upper valve core body and the lower valve core body in the axial direction of the valve stem. Usually, a medium channel hole is provided on the upper valve core body and the lower valve core body, so that the valve The core becomes a balanced structure. Background technique [0002] The traditional two-seat sleeve valve with traditional spool assembly is generally used as a regulating valve. Compared with the single-seat regulating valve, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/44
CPCF16K1/44F16K1/32
Inventor 申宝光
Owner 申宝光
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