CN107869607B - Non-return type pressure seal regulating valve - Google Patents

Non-return type pressure seal regulating valve Download PDF

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Publication number
CN107869607B
CN107869607B CN201711088335.3A CN201711088335A CN107869607B CN 107869607 B CN107869607 B CN 107869607B CN 201711088335 A CN201711088335 A CN 201711088335A CN 107869607 B CN107869607 B CN 107869607B
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China
Prior art keywords
valve
sleeve
valve core
core
cavity
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CN201711088335.3A
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CN107869607A (en
Inventor
朱荣生
陈一鸣
杨爱玲
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Jiangsu Guoquan Pumps Co Ltd
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Jiangsu Guoquan Pumps Co Ltd
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Priority to CN201711088335.3A priority Critical patent/CN107869607B/en
Publication of CN107869607A publication Critical patent/CN107869607A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/12—Covers for housings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Valves (AREA)
  • Safety Valves (AREA)

Abstract

The invention aims to provide a non-return type pressure seal regulating valve, which comprises a valve body 1, a valve seat 2, a valve core 3, a sleeve component 4, a guide sleeve 5, an upper sleeve 6, a valve cover 7, a valve rod 9, a seal component 10, a support 11, a butt-clamp nut 12 and an actuating mechanism 13, wherein an inlet flow passage and an outlet flow passage are respectively arranged at two ends of the valve body 1, an upper cavity, a middle cavity and a lower cavity are arranged in the valve body 1, and the core of the non-return type pressure seal regulating valve is as follows: the upper cavity is connected with the outlet flow channel, the lower cavity is connected with the inlet flow channel, the middle cavity is internally provided with an upper sleeve 6, a sleeve component 4 which can coaxially move linearly with the valve rod 9 is arranged below the upper sleeve 6, a valve seat 2 which is hermetically matched with the valve core 3 is arranged at the contact position of the middle cavity and the lower cavity, and the valve core 4 can adjust the communication state between the inlet flow channel and the outlet flow channel. The sleeve component 4 is in clearance fit with the valve core 3, the lower end of the valve rod 9 is fixedly connected with the valve core 3, and the upper end of the valve rod 8 penetrates through the valve cover 7. The invention not only solves the problem of leakage in the valve caused by low processing precision, improves the sealing performance of the regulating valve, but also prevents the fluid medium in the pipeline from flowing reversely, thereby improving the safety performance of the regulating valve.

Description

Non-return type pressure seal regulating valve
Technical Field
The invention relates to a regulating valve, in particular to a non-return type pressure seal regulating valve.
Background
At present, in the modern industrial production industry, the regulating valve is widely applied to fluid control occasions, and the sealing performance of the regulating valve directly influences the operation effect of the whole pipeline control system. Under some occasions with poor operation conditions, because fluid media in a received pipeline contain particles, the valve core and the valve seat are possibly abraded greatly, and the valve is leaked. When the water pump on the pipeline stops operating, the fluid medium in the drain pipe can be subject to backflow due to leakage of the regulating valve, and the pipeline efficiency is reduced. If the leakage condition of the regulating valve is serious, electromechanical accidents can be caused, and potential safety hazards are brought. Once the regulating valve accident happens, the maintenance amount of the pipeline is increased, the cost is increased, the economic benefit is influenced, and the safety pressure is brought to the daily industrial production.
Disclosure of Invention
In order to solve the problems, the technical problem to be solved by the invention is to provide a non-return type pressure seal regulating valve, double sealing of the regulating valve is realized, and the fluid medium of a pipeline can be prevented from flowing backwards on the basis of ensuring the sealing performance of the regulating valve.
The purpose of the invention is realized by the following technical scheme:
a non-return type pressure seal regulating valve comprises a valve body, a valve seat, a valve core, a sleeve component, a guide sleeve, an upper sleeve, a valve cover, a valve rod, a sealing component, a support, a split nut and an actuating mechanism, wherein an inlet flow passage and an outlet flow passage are respectively arranged at two ends of the valve body; a valve core which can coaxially move linearly with the valve rod is arranged in the sleeve component; a valve seat which is matched with the valve core in a sealing way is arranged at the contact position of the middle cavity and the lower cavity, and the valve core can adjust the communication state between the inlet and the outlet flow passages; 4 uniformly distributed circulation windows are arranged on the sleeve component, and the circulation areas are the same; the sleeve component is internally provided with 4 small valve cores matched with the circulation window; the small valve core is fixed through a small valve core gland, and a disc spring is arranged between the small valve core gland and the small valve core; the valve core is in clearance fit with the sleeve assembly, the lower end of the valve rod is fixedly connected with the valve core, and the upper end of the valve rod penetrates through the valve cover; and a dustproof ring is arranged between the packing gland and the packing press plate so as to ensure the sealing performance of the packing.
The invention has the advantages that: the non-return pressure seal regulating valve of the invention divides the sealing structure of the middle cavity of the valve body into two parts, one part is the sealing structure formed by a small valve core gland, a disc spring and a flow window between a sleeve and a valve core, the position of the small valve core is adjusted by the pretightening force of the disc spring, so that the valve core and the sleeve assembly reach a pressure sealing state, the other part is the sealing structure between the valve core and a valve seat, and the sealing part of the valve cover adopts a novel sealing assembly. The invention not only solves the problem of leakage in the valve caused by low processing precision, improves the sealing performance of the regulating valve, but also prevents the fluid medium in the pipeline from flowing reversely, thereby improving the safety performance of the regulating valve.
Drawings
FIG. 1 is a schematic structural view of a check type pressure seal regulating valve of the present invention;
FIG. 2 is an enlarged schematic view of a portion of a seal assembly of a check pressure regulator valve according to the present disclosure;
FIG. 3 is a schematic diagram of a sleeve assembly of the check type pressure-tight regulating valve according to the present invention;
FIG. 4 is a schematic structural diagram of a sleeve assembly in the check type pressure-tight regulating valve of the present invention.
In the figure: the valve comprises a valve body 1, a valve seat 2, a valve core 3, a sleeve component 4, a guide sleeve 5, an upper sleeve 6, a valve cover 7, a valve rod 9, a sealing component 10, a compression nut 11, a support 12, a butt clamp nut 13 and an electric actuating mechanism 14; a packing washer 101, a packing 102, a packing pressing sleeve 103, a dust ring 104, a packing pressing plate 105, a full-thread stud and nut 106; disc spring 42, small valve core 43, and small valve core gland 44.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the check type pressure seal regulating valve in this embodiment includes a valve body 1, a valve seat 2, a valve core 3, a sleeve assembly 4, a guide sleeve 5, an upper sleeve 6, a valve cover 7, a valve rod 9, a seal assembly 10, a support 11, a split nut 12, and an actuator 13, where an inlet flow passage and an outlet flow passage are respectively disposed at two ends of the valve body 1, and an upper chamber, a middle chamber, and a lower chamber are disposed in the valve body 1; the upper cavity is connected with the outlet flow channel, the lower cavity is connected with the inlet flow channel, a sleeve component 4 and an upper sleeve 6 are arranged in the middle cavity, and the sleeve component 4 is arranged below the upper sleeve 6; a valve core 3 which can coaxially move linearly with the valve rod 9 is arranged in the sleeve component 4; the valve seat 2 matched with the valve core 3 in a sealing mode is arranged at the contact position of the middle cavity and the lower cavity, the valve core 3 can adjust the communication state among the upper cavity, the middle cavity and the lower cavity, the valve core 2 is in clearance fit with the sleeve component 4, the lower end of the valve rod 9 is fixedly connected with the valve core 2, and the upper end of the valve rod 9 penetrates through the valve cover. And a dustproof ring is arranged between the packing gland and the packing press plate so as to ensure the sealing performance of the packing.
As shown in fig. 3 and 4, 4 uniformly distributed flow windows are arranged on the sleeve component 4, and the flow areas are the same; the sleeve component is internally provided with 4 small valve cores matched with the circulation window; the small valve core 43 is fixed by a small valve core gland 44, and a disc spring 42 is arranged between the small valve core gland 44 and the small valve core 43.
As shown in fig. 2, the packing pressing plate 105 is connected to the valve body 1 through a full-thread stud and a nut 106, the packing pressing sleeve 103 is disposed between the packing pressing plate 105 and the packing 102, a dust ring 104 is disposed between the packing pressing sleeve 103 and the packing pressing plate 105 to ensure the sealing performance of the packing, and a packing gasket 101 is disposed below the packing 102.
In the embodiment of the invention, when the regulating valve operates, the valve core 3 moves linearly upwards in the sleeve component 4 along with the valve rod 9, fluid medium in a pipeline flows into the upper cavity of the valve body 1 through the inlet flow passage, and when the pressure of the fluid medium is slightly greater than the pressure of the disc spring 42, the small valve core 43 in the sleeve component 4 is jacked open, enters the cavity of the valve body 1 through the flow window of the sleeve component 4, and reaches the outlet flow passage of the lower cavity through the valve seat 2. When the regulating valve is closed, the valve core 3 moves linearly downwards along with the valve rod 9 in the sleeve component 4 until the valve core 3 is completely contacted with the valve seat 2. At this point, the restoring initial tension of the disc spring 42 in the sleeve assembly 4 engages the small spool 43 with the flow window, thereby cutting off the fluid medium in the conduit. This makes it possible to achieve a double sealing of the regulating valve and at the same time to prevent a backflow of the fluid medium.

Claims (1)

1. A non-return type pressure seal regulating valve comprises a valve body, a valve core, a sleeve component, an upper sleeve, a valve cover, a valve rod, a filler, a support, a slipknot bolt and an actuating mechanism, wherein an inlet flow passage and an outlet flow passage are respectively arranged at two ends of the valve body; a valve core which can coaxially move linearly with the valve rod is arranged in the sleeve component; a valve seat which is matched with the valve core in a sealing way is arranged at the contact position of the middle cavity and the lower cavity, and the valve core can adjust the communication state between the inlet and outlet flow passages; 4 uniformly distributed circulation windows are arranged on the sleeve component, and the circulation areas are the same; the sleeve component is internally provided with 4 small valve cores matched with the circulation window; the small valve core is fixed through a small valve core gland, and a disc spring is arranged between the small valve core gland and the small valve core; the lower end of the valve rod is fixedly connected with the valve core, and the upper end of the valve rod penetrates through the valve cover; the packing pressing plate is connected with the valve body through a full-thread stud and a nut, the packing pressing sleeve is arranged between the packing pressing plate and the packing, and a dustproof ring is arranged between the packing pressing sleeve and the packing pressing plate to ensure the sealing performance of the packing.
CN201711088335.3A 2017-11-08 2017-11-08 Non-return type pressure seal regulating valve Active CN107869607B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711088335.3A CN107869607B (en) 2017-11-08 2017-11-08 Non-return type pressure seal regulating valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711088335.3A CN107869607B (en) 2017-11-08 2017-11-08 Non-return type pressure seal regulating valve

Publications (2)

Publication Number Publication Date
CN107869607A CN107869607A (en) 2018-04-03
CN107869607B true CN107869607B (en) 2020-11-03

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ID=61753871

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711088335.3A Active CN107869607B (en) 2017-11-08 2017-11-08 Non-return type pressure seal regulating valve

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006016317A1 (en) * 2006-04-06 2007-10-11 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Compressor arrangement with a valve unit in the intake area
RU2338941C1 (en) * 2007-03-01 2008-11-20 Открытое акционерное общество "НПО "Промавтоматика" Shutoff-and-control valve
US8196892B2 (en) * 2008-12-17 2012-06-12 Dresser, Inc. Fluid control valve
CN102168768B (en) * 2011-04-20 2012-08-15 林文华 Anti-blockage cutoff non-return regulating valve
CN206145199U (en) * 2016-08-30 2017-05-03 江苏苏盐阀门机械有限公司 Check valve with by function
CN106337954A (en) * 2016-09-21 2017-01-18 江苏龙力神精工科技有限公司 Non-return type regulating valve

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