Dual seal combined type valve

A double-seal and combined technology, applied in shaft seals, valve details, control valves, etc., can solve the problems of complex structure and poor sealing of combined valves, and achieve stable and reliable movement, simple structure, and easy maintenance and replacement Effect

Pending Publication Date: 2020-11-20
江苏江恒阀业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is: in order to solve the problems of poor sealing performance and complex structure of the combined valve, the present invention provides a double-sealed combined valve

Method used

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  • Dual seal combined type valve
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  • Dual seal combined type valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Please refer to Figure 1-2, a double-seal combined valve, including a first valve body 1, a first disc spring 2 is fixedly connected to the inner side of the first valve body 1, and one side of the first disc spring 2 A first valve seat 3 is provided, a valve ball 4 is provided on one side of the first valve seat 3, a valve stem 16 is provided on the top of the valve ball 4, a stuffing box 21 is provided on the top of the first valve body 1, and a stuffing box 21 is provided on the top of the valve ball 4. There are first packing 22 and second packing 23 inside, the top of the stuffing box 21 is fixedly connected with the packing gland 24, the top of the packing gland 24 is fixedly connected with the packing plate 25, and the two sides of the packing plate 25 are penetrated with the second Stud 27, the top outside of the second stud 27 is threadedly connected with the second nut 28, the outer side of the second stud 27 is sleeved with the second disc spring 26, and the s...

Embodiment 2

[0032] Referring to Fig. 2-3, this embodiment is further optimized on the basis of embodiment 1, specifically, the outer side of the second valve seat 5 is sleeved with a second O-ring 15, the stuffing box 21 and the first A third sealing ring 19 is provided between the valve bodies 1 .

[0033] Specifically, a third O-ring 29 is provided outside the middle of the valve stem 16 .

[0034] Specifically, a fourth O-ring 30 is sleeved on the outside of the bottom of the stuffing box 21 .

[0035] Specifically, a first seal ring 6, a second seal ring 7 and a first O-ring 14 are provided between the first valve body 1 and the second valve body 8, and an axial flow seal is provided inside one end of the first butterfly spring 2. One end of the axial flow valve disc 13 is sleeved with a coil spring 12 , and one end of the first butterfly spring 2 is fixedly connected with a support seat 11 .

[0036] In this embodiment, through the cooperation between the second O-ring 15, the thir...

Embodiment 3

[0038] Please refer to Fig. 2 and 4, present embodiment has been optimized as follows on the basis of example 1 or example 2, specifically, between the first valve body 1 and the second valve body 8 through the first stud 9 and the first Nut 10 is fixedly connected.

[0039] Specifically, a plane bearing 17 is sleeved on the outside of the bottom of the valve stem 16 , and a sliding bearing 18 is provided on the top of the plane bearing 17 , and the sliding bearing 18 is sleeved on the outside of the valve stem 16 .

[0040] Specifically, the stuffing box 21 is provided with screws 20 inside.

[0041] In this embodiment, when the valve stem 16 is in motion, due to the effect of the plane bearing 17 and the sliding bearing 18, the frictional force on the valve stem 16 during the motion is reduced, thereby preventing the valve stem 16 from being strained, effectively The service life of the device is extended.

[0042] To sum up: the present invention uses the second butterfly...

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Abstract

The invention discloses a dual seal combined type valve, and relates to the technical field of valves. The dual seal combined type valve comprises a first valve body. One side of the interior of the first valve body is fixedly connected with a first butterfly spring. A first valve seat is arranged on one side of the first butterfly spring. A valve ball is arranged on one side of the first valve seat. A valve rod is arranged at the top of the valve ball. A packing box is arranged at the top of the first valve body. First packing and second packing are arranged in the packing box. The top of thepacking box is fixedly connected with a packing bushing. According to the dual seal combined type valve, through cooperation of the packing bushing, a packing press plate, a second butterfly spring,a second stud and a second nut, pre-tightening force is provided through the second butterfly spring, sealing performance of the valve body can be guaranteed under the condition that the temperature changes, sealing force is provided for an axial flow type valve clack and a second valve body through the spring, the sealing force is adjusted through a supporting seat, the structure is simple, production difficulty is low, maintenance and replacement are convenient, and application and popularization are facilitated.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a double-seal combined valve. Background technique [0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, adjust and control the parameters of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are important components in the fluid conveying system. Control components, with the functions of cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief, etc., are used in the valves of fluid control systems, from the simplest cut-off valve to the various valves used in extremely complex automatic control systems. There are many types and specifications of valves. [0003] A detachable combined valve structure is disclosed in the Chinese invention patent application number: CN20192126435...

Claims

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Application Information

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IPC IPC(8): F16K15/18F16K15/06F16K5/20F16K27/00F16K27/08F16K41/02F16K5/06
CPCF16K5/0647F16K5/201F16K15/063F16K27/00F16K27/08F16K41/026F16K15/1848
Inventor 赵学强郭建林
Owner 江苏江恒阀业有限公司
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