CN112728121A - Anti-collision self-closing valve - Google Patents

Anti-collision self-closing valve Download PDF

Info

Publication number
CN112728121A
CN112728121A CN202110011719.5A CN202110011719A CN112728121A CN 112728121 A CN112728121 A CN 112728121A CN 202110011719 A CN202110011719 A CN 202110011719A CN 112728121 A CN112728121 A CN 112728121A
Authority
CN
China
Prior art keywords
valve
valve body
spring
section
threaded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110011719.5A
Other languages
Chinese (zh)
Inventor
简梓炜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weixin Guangzhou Industrial Technology Co ltd
Original Assignee
Weixin Guangzhou Industrial Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weixin Guangzhou Industrial Technology Co ltd filed Critical Weixin Guangzhou Industrial Technology Co ltd
Priority to CN202110011719.5A priority Critical patent/CN112728121A/en
Publication of CN112728121A publication Critical patent/CN112728121A/en
Priority to PCT/CN2021/119428 priority patent/WO2022142502A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • F16K1/36—Valve members
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F16K3/262—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a transverse bore in the valve member
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F16K3/265—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a sleeve sliding in the direction of the flow line
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F16K3/267—Combination of a sliding valve and a lift valve
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L29/00—Joints with fluid cut-off means
    • F16L29/02—Joints with fluid cut-off means with a cut-off device in one of the two pipe ends, the cut-off device being automatically opened when the coupling is applied

Abstract

The invention relates to the technical field of pipeline connecting devices, and discloses an anti-collision self-closing valve which comprises a valve body, a threaded body, a valve core assembly with a bidirectional sealing valve, a return spring, a connecting nut and a connecting core. The inner part of the threaded body is provided with a guide section and a connecting section, the inner diameter of the guide section is smaller than that of the connecting section, the outer surface of the connecting section of the threaded body is axially and threadedly connected with the inner surface of the valve body, the outer surface of the guide section is threadedly connected with the connecting inner surface of the connecting nut, and the connecting core is communicated with the threaded body and is hermetically fixed with the threaded body through the connecting nut. The contact end face of the connecting core and the thread body is provided with a first sealing ring. The anti-collision self-closing valve has the advantages that the anti-collision self-closing valve is provided with two sealing layers, when one layer leaks, the other layer is used for anti-leakage protection, and leakage can be effectively reduced to the minimum; dirt adhered to the seal ring is easily discharged; the aging leakage predicting function is provided; the valve body protective cover effectively prevents external collision and dirt from permeating into the threaded body; the application range is wide.

Description

Anti-collision self-closing valve
Technical Field
The invention relates to the technical field of pipeline connecting devices, in particular to an anti-collision self-closing valve.
Background
Due to the consideration of safety and other factors, most of the field-used tools in modern heavy industry are changed from electric to pneumatic. For this reason, a large number of gas supply systems need to be used to meet different production needs. For example: energy delivery devices are needed in industries such as intelligent manufacturing, automobile manufacturing, and ship repair and construction. During the fluid transportation process, the pipeline is connected to the use port, and then the pipeline is branched from the use port to be connected to the equipment. All port connections all expose outside, move often in process of production, carelessly can appear colliding the damage and cause unable use a little to the structure of connecting valve is gone to the infiltration very easily to grey sand dirt etc. goes to cause wearing and tearing, and the live time is long, causes the leakage phenomenon to take place, and the use can't be connected to serious person, and the problem of installing at outdoor valve member is more serious, has serious potential safety hazard and influences normal production.
Disclosure of Invention
The purpose of the invention is: a connecting seal valve with effective anti-collision performance and compact structure is provided.
In order to achieve the purpose, the invention provides an anti-collision self-closing valve which comprises a valve body, a threaded body, a valve core assembly with a bidirectional sealing valve, a return spring, a connecting nut and a connecting core.
The inner part of the threaded body is provided with a guide section and a connecting section, the inner diameter of the guide section is smaller than that of the connecting section, the outer surface of the connecting section of the threaded body is axially in threaded connection with the inner surface of the valve body, the outer surface of the guide section is in threaded connection with the connecting inner surface of the connecting nut, and the connecting core is communicated with the threaded body and is fixed with the threaded body in a sealing way through the connecting nut; the valve body is internally provided with an accommodating cavity for accommodating the connecting section of the threaded body and the connecting nut, and the threaded body is connected with the valve body and fixed in the accommodating cavity; the valve core assembly is arranged inside a pipe body connected with the valve body and the threaded body, the outer side of the valve core assembly is sleeved with a return spring, and the valve core assembly, a protruding structure arranged on the inner surface of the valve body and the end face of the guide section of the threaded body jointly form a sealing cavity.
Preferably, the valve core assembly comprises a first vent valve, a second vent valve, a connecting column, a first baffle and a second baffle; the return spring includes a first spring and a second spring.
The valve body is positioned outside the threaded body, the threaded body is in threaded connection with the valve body from one side of the sealing cavity, the protruding structure arranged on the inner surface of the valve body is a convex ring, the first vent valve is abutted against the convex ring from the outside of the other side of the sealing cavity, the first vent valve is connected with a connecting column along the direction in the sealing cavity, one side, close to the first vent valve, of the connecting column is sleeved with a first blocking piece which can axially move along the connecting column and is limited in the sealing cavity, and one side, far away from the first vent valve, of the connecting column is fixedly provided with a second blocking; the second vent valve is positioned in the sealing cavity and between the thread body guide section and the connecting column, and the second vent valve is abutted against the end face of the thread body guide section;
the reset spring is sleeved on a connecting column between the first vent valve and the second vent valve, one end of the first spring is abutted against the first blocking piece, and the other end of the first spring is abutted against the second vent valve; the second spring is positioned in the first spring, one end of the second spring is abutted against the first blocking piece, and the other end of the second spring is abutted against the second blocking piece.
Preferably, first breather valve is a centrosymmetric's rotator, and first breather valve includes first valve body back end, first valve body interlude and first valve body anterior segment, and first valve body back end diameter is greater than the internal diameter of bulge loop, and first valve body anterior segment diameter is less than the internal diameter of bulge loop, and first valve body interlude is equipped with first recess, sets up the fifth sealing washer in the first recess, and the external diameter of fifth sealing washer is greater than the internal diameter of bulge loop.
Preferably, the second breather valve is a centrosymmetric rotator, including the spring fixed station, second valve body back end, second valve body interlude, second valve body anterior segment and guide post, the one end of first spring cup joints on the spring fixed station so that carry on spacingly to the radial movement of first spring, second valve body back end diameter is greater than the internal diameter of screw body guide section, the direction that stretches into in the screw body guide section of second valve body anterior segment is equipped with the guide post the same with second valve body anterior segment diameter, second valve body interlude is equipped with the second recess, set up the fourth sealing washer in the second recess, the external diameter of fourth sealing washer is greater than the internal diameter of screw body guide section.
Preferably, the inner surface of the valve body is provided with a limiting boss between the convex ring and the first baffle plate, and the inner diameter of the limiting boss is smaller than that of the first baffle plate, so that the first baffle plate is abutted against the end surface of the limiting boss.
Preferably, the second separation blade is a locknut in threaded connection with the connecting column, and the connecting column is provided with an external thread in matched connection with the locknut.
Preferably, the convex ring is provided with a bevel end and a plane end, the plane end forms a cylindrical space for accommodating the first valve body front section, and the bevel end forms a cone frustum-shaped space for accommodating the fifth sealing ring.
Preferably, the contact surface of the valve body and the threaded connection end of the threaded body is provided with a third sealing ring.
Preferably, the inner side of the guide section of the screw body is provided with a ring groove, and a second sealing ring which is contacted with the connecting core is arranged in the ring groove.
Preferably, the contact end surface of the connecting core and the thread body is provided with a first sealing ring.
Compared with the prior art, the anti-collision self-closing valve provided by the embodiment of the invention has the beneficial effects that:
1. when a general self-closing valve is in a static state, if dirt stays on a sealing port or a sealing ring, a leakage phenomenon can occur. The anti-collision self-closing valve provided by the embodiment of the invention is provided with two sealing layers, and when one layer leaks, the other layer is used for leakage prevention protection, so that the leakage can be effectively reduced to the minimum.
2. The common self-closing valve is sealed by a single valve core, and when the valve is output outwards, a stable flowing space is formed between a sealing port or a sealing ring and the valve core, and dirt is not easy to discharge. And the rear valve core of the double-valve-core self-closing connecting valve adopts conical sealing flow guide, so that a stable flowing space can not be formed, and dirt adhered to a sealing ring can be easily discharged.
3. The sealing structure simultaneously adopts the double sealing functions of column end type sealing and shaft core type sealing, and the leakage which is possibly generated during connection is reduced to the minimum.
4. The original anti-collision self-closing valve with the front sealing space and the rear sealing space is arranged inside the valve body, under the normal condition, the valve core in the rear sealing space is fatigue aged in advance than the valve core in the front sealing space due to long-term pressure, and the fatigue aging of the valve in the rear sealing space is not easy to find. Compared with the self-closing valve with the structure, the self-closing valve has the function of predicting aging leakage, if the air is communicated once the valve core is screwed during connection, the valve core is possibly polluted or aged, the phenomenon that the air is communicated once the valve core is screwed after the valve core is continuously connected for 2-3 times to remove the dirt still exists, and the connector needs to be replaced for maintenance.
5. The connecting thread of the anti-collision self-closing valve is wrapped by the valve body of the anti-collision self-closing valve, so that external collision and dirt are effectively prevented from permeating into the thread body; the structure of the connecting core is wrapped by the nut, so that dirt is effectively prevented from permeating into the core and the connecting core is resistant to external friction.
The anti-collision self-closing valve provided by the embodiment of the invention has a wide application range, and can be applied to industries requiring multi-point gas supply, such as intelligent manufacturing, automobile manufacturing and repairing, ship building and the like.
Drawings
FIG. 1 is a schematic view of a connection structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a valve core assembly according to an embodiment of the invention;
FIG. 3 is an enlarged partial schematic view of FIG. 2;
in the figure, 1, a valve body; 2. a threaded body; 3. a valve core assembly; 4. a return spring; 5. a seal ring; 6. a connecting nut; 7. connecting the cores; 8. a convex ring; 9. a limiting boss; 10. containing cavity
301. A first vent valve; 302. a second vent valve; 303. connecting columns; 304. a first baffle plate; 305. a second baffle plate;
3011. a first valve body rear section; 3012. a first valve body middle section; 3013. a first valve body front section;
3021. a spring fixing table; 3022. a second valve body rear section; 3023. a second valve body intermediate section; 3024. a second valve body front section; 3025. a guide post;
401. a first spring; 402. a second spring;
501. a first seal ring; 502. a second seal ring; 503. a third seal ring; 504. a fourth seal ring; 505. a fifth seal ring;
801. a beveled end; 802. a planar end.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "disposed on" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured" to, or "fixedly coupled" to another element, it can be removably secured or non-removably secured to the other element. When an element is referred to as being "connected," "pivotally connected," to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1, the anti-collision self-closing valve according to the preferred embodiment of the present invention comprises a valve body 1, a threaded body 2, a valve core assembly 3 with a two-way sealing valve, a return spring 4, a connecting nut 6 and a connecting core 7, wherein each connecting contact surface is provided with a sealing ring 5.
The inside direction section and the linkage segment of having of the screw body 2, direction section internal diameter is less than the linkage segment internal diameter, the linkage segment surface of the screw body 2 and the axial threaded connection of valve body 1 internal surface, direction section surface and coupling nut 6's the interior surface threaded connection of being connected, connect the core 7 and communicate with the screw body 2 and seal fixedly with the screw body 2 through coupling nut 6. The contact end surface of the connecting core 7 and the screw body 2 is provided with a first sealing ring 501. The inner side of the guiding section of the thread body 2 is provided with a ring groove, and a second sealing ring 502 which is contacted with the connecting core 7 is arranged in the ring groove.
The valve body 1 is internally provided with an accommodating cavity 10 for accommodating the connecting section of the thread body 2 and the connecting nut 6, and the thread body 2 is connected with the valve body 1 and fixed in the accommodating cavity 10. The receiving chamber 10 is formed by a protective cover formed by extending the joint of the valve body 1 and the screw body 2. The contact surface of the threaded connection end of the valve body 1 and the threaded body 2 is provided with a third sealing ring 503.
The valve core component 3 is arranged inside a pipe body connected with the valve body 1 and the threaded body 2, the outer side of the valve core component 3 is sleeved with the reset spring 4, and the protruding structure arranged on the inner surface of the valve core component 3 and the valve body 1 and the end surface of the guide section of the threaded body 2 jointly form a sealing cavity. The coupling nut 6 includes a threaded coupling portion located inside the accommodating chamber 10 and engaged with the threaded body 2, and a rotating portion located outside the accommodating chamber 10 for manual tightening.
As shown in fig. 2, the valve core assembly 3 includes a first vent valve 301, a second vent valve 302, a connecting column 303, a first flap 304 and a second flap 305. First breather valve 301 is a centrosymmetric's rotator, and first breather valve 301 includes first valve body back end 3011, first valve body interlude 3012 and first valve body anterior segment 3013, and first valve body back end 3011 diameter is greater than the internal diameter of bulge loop 8, and first valve body anterior segment 3013 diameter is less than the internal diameter of bulge loop 8, and first valve body interlude 3012 is equipped with first recess, sets up fifth sealing washer 505 in the first recess, and the external diameter of fifth sealing washer 505 is greater than the internal diameter of bulge loop 8.
The second vent valve 302 is a centrosymmetric rotary body, and comprises a spring fixing platform 3021, a second valve body rear section 3022, a second valve body middle section 3023, a second valve body front section 3024, and a guide post 3025, wherein the left end of the first spring 401 is sleeved on the spring fixing platform 3021 so as to limit the radial movement of the first spring 401, the diameter of the second valve body rear section 3022 is larger than the inner diameter of the guide section of the screw body 2, the left side of the second valve body front section 3024 is provided with the guide post 3025 having the same diameter as the guide post, the second valve body middle section 3023 is provided with a second groove, a fourth sealing ring 504 is arranged in the second groove, and the outer diameter of the fourth sealing ring 504 is larger than the inner diameter of the guide section of the screw body 2.
The return spring 4 includes a first spring 401 and a second spring 402. The right end of the first spring 401 abuts against the left side of the first blocking piece 304, the left end of the first spring 401 abuts against the right side of the second vent valve 302, the second spring 402 is located inside the first spring 401, the right end of the second spring 402 abuts against the left side of the first blocking piece 304, and the left end of the second spring 402 abuts against the right side of the second blocking piece 305.
Valve body 1 is located the right side of the screw body 2, the protruding structure that 1 internal surface of valve body set up is bulge loop 8, first breather valve 301 supports from the outside on sealed chamber right side and leans on in bulge loop 8, first breather valve 301 connects the spliced pole 303 along the direction in the sealed chamber, spliced pole 303 left side cover is established and can be followed spliced pole 303 axial displacement and by the first separation blade 304 of restriction in the sealed chamber, spliced pole 303 left side sets firmly second separation blade 305, second breather valve 302 is located spliced pole 303 left side, second breather valve 302 supports to the left and leans on in the right side end face of the screw body 2 guide segment.
The left side of the convex ring 8 is provided with a first limiting boss 9 positioned on the right side of the first blocking sheet 304, and the first blocking sheet 304 abuts against the left end face of the first limiting boss 9 rightwards. As shown in fig. 3, the male ring 8 has a beveled end 801 and a flat end 802, the flat end 802 forming a cylindrical space for receiving the first valve body front section 3013, and the beveled end 801 forming a truncated cone shaped space for receiving the fifth sealing ring 505.
Preferably, the second blocking piece 305 is a locknut in threaded connection with the left end of the connecting column 303, and the left end of the connecting column 303 is provided with an external thread in fit connection with the locknut.
The anti-collision self-closing valve provided by the embodiment of the invention is generally divided into two parts, namely a self-closing valve and a branch connecting body, in the using process:
1. the self-closing valve consists of a valve body 1, a double-layer self-closing valve piece and a thread body connected with a port. Generally fixed on the output ports of various pipelines, the self-closing valve is in a self-closing state when not connected with the branch connecting body, namely two ends of the sealing cavity are in a sealing state.
2. The branch connecting body consists of a connecting nut 6 and a connecting core 7. The branch connector is typically secured to the hose and is integral with the self-closing valve when moved for use.
When the self-closing valve is used, the self-closing valve and the branch connecting body are communicated with a pipeline for conveying fluid when being connected, the kinetic energy of the fluid opens a sealing cavity of the self-closing valve, and a pipeline is communicated. When the self-closing valve and the branch connecting body are disconnected, the self-closing valve sealing cavity is automatically closed, and the fluid is blocked.
The self-closing valve is provided with two valve cores in a space to form two overlapped self-closing spaces, so that the self-closing valve has a double-layer sealing function, and is mutually communicated and independent.
When the branch connecting body is connected with the self-closing valve, the end part of the connecting core 7 of the branch connecting body is connected into the guide section of the self-closing valve thread body 2 through acting force, the inner circular wall surface of the guide section channel is provided with a groove, and the second sealing ring 502 in the groove and the front end of the cylindrical end part of the connecting core 7 form primary sealing. At the moment, the self-closing connecting valve is in a self-closing state. Under the continued force of the threads, the guide post 3025 is pushed through the cylindrical end to open the second vent valve 302. At the moment, the pipeline is communicated with the inner cavity of the self-closing valve, when the branch connecting body is screwed up relative to the self-closing valve, the first sealing ring 501 in the baffle groove at the cylindrical rear end of the connecting core 7 and the end face of the thread body 2 are pressed tightly, and at the moment, the pipeline is in a non-leakage communicated state.
When the connection and the use are finished, the thread is unscrewed to disconnect the supply channel, so that the two valve cores of the self-closing connecting valve are in the self-closing sealing state.
The double sealing structure of the valve core of the self-closing valve is column end type sealing and shaft core type sealing respectively.
Column end type sealing: the valve body channel is connected with the core front cylindrical end groove of the connector through the inner circle wall surface of the valve body channel, and the inner circle wall surface of the valve body channel and the inner sealing ring of the core front cylindrical end groove form primary channel sealing to prevent fluid leakage.
Shaft core type sealing: the inner sealing ring of the groove at the rear end of the connector core and the inner bevel face at the front end of the connecting port of the valve body. The sealing function is realized by the pressing of the acting force of the screw thread.
The anti-collision self-closing valve is characterized in that a valve body 1 is provided with a dustproof protection cover structure, and the anti-collision self-closing valve mainly comprises the following functions:
1. the outer surface of the external thread is additionally provided with a protective cover which is integrated with or arranged outside the joint body, so that the damage caused by external collision can be effectively reduced.
2. Effectively prevent dirt from entering the threaded connection body and causing abrasion to the threads.
3. The front end of the nut is cylindrical, and the rear end of the nut is hexagonal (or knurled), so that the nut is attractive and does not prevent the nut from being normally connected and used.
4. The anti-collision connection mode is suitable for different special environments:
A. the protective cover is suitable for being used on frequently-moving equipment, a protective cover is arranged outside the connecting port for protection, and the protective cover and the threads cannot be damaged by common slight collision.
B. The anti-collision threaded connection structure is suitable for being used in environments with serious dust pollution (such as severe environments of paint spray rooms, sand spray rooms and the like), and the anti-collision connection mode is that dirt is difficult to enter a threaded connection body under the common condition of non-exposed connection.
In summary, the embodiment of the present invention provides an anti-collision self-closing valve, which includes a valve body 1, a threaded body 2, a valve core assembly 3 with a two-way sealing valve, a return spring 4, a connection nut 6, and a connection core 7. The inside direction section and the linkage segment of having of the screw body 2, direction section internal diameter is less than the linkage segment internal diameter, the linkage segment surface of the screw body 2 and the axial threaded connection of valve body 1 internal surface, direction section surface and coupling nut 6's the interior surface threaded connection of being connected, connect the core 7 and communicate with the screw body 2 and seal fixedly with the screw body 2 through coupling nut 6. The contact end surface of the connecting core 7 and the screw body 2 is provided with a first sealing ring 501. The anti-collision self-closing valve has the advantages that the anti-collision self-closing valve is provided with two sealing layers, when one layer leaks, the other layer is used for anti-leakage protection, and leakage can be effectively reduced to the minimum; dirt adhered to the seal ring is easily discharged; the aging leakage predicting function is provided; the valve body protective cover effectively prevents external collision and dirt from permeating into the threaded body; the application range is wide.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (10)

1. An anticollision self-closing valve which is characterized in that: the valve comprises a valve body (1), a thread body (2), a valve core assembly (3) with a bidirectional sealing valve, a return spring (4), a connecting nut (6) and a connecting core (7);
the inner part of the threaded body (2) is provided with a guide section and a connecting section, the inner diameter of the guide section is smaller than that of the connecting section, the outer surface of the connecting section of the threaded body (2) is axially in threaded connection with the inner surface of the valve body (1), the outer surface of the guide section is in threaded connection with the connecting inner surface of the connecting nut (6), and the connecting core (7) is communicated with the threaded body (2) and is sealed and fixed with the threaded body (2) through the connecting nut (6); an accommodating cavity (10) for accommodating the connecting section of the threaded body (2) and the connecting nut (6) is arranged in the valve body (1), and the threaded body (2) is connected with the valve body (1) and fixed in the accommodating cavity (10); the valve core assembly (3) is arranged inside a pipe body connected with the valve body (1) and the threaded body (2), the outer side of the valve core assembly (3) is sleeved with the reset spring (4), and the protruding structure arranged on the inner surface of the valve core assembly (3) and the valve body (1) and the end surface of the guide section of the threaded body (2) jointly form a sealing cavity.
2. The collision-resistant self-closing valve according to claim 1, wherein: the valve core assembly (3) comprises a first vent valve (301), a second vent valve (302), a connecting column (303), a first baffle (304) and a second baffle (305); the return spring (4) comprises a first spring (401) and a second spring (402);
the valve body (1) is positioned outside the threaded body (2), the threaded body (2) is in threaded connection with the valve body (1) from one side of the sealed cavity, a convex structure arranged on the inner surface of the valve body (1) is a convex ring (8), the first vent valve (301) abuts against the convex ring (8) from the outside of the other side of the sealed cavity, the first vent valve (301) is connected with a connecting column (303) along the direction in the sealed cavity, a first baffle (304) which can axially move along the connecting column (303) and is limited in the sealed cavity is sleeved on one side, close to the first vent valve (301), of the connecting column (303), and a second baffle (305) is fixedly arranged on one side, far away from the first vent valve (301), of the connecting column (303); the second vent valve (302) is positioned in the sealing cavity and between the guide section of the thread body (2) and the connecting column (303), and the second vent valve (302) is abutted against the end face of the guide section of the thread body (2);
the return spring (4) is sleeved on the connecting column (303) between the first vent valve (301) and the second vent valve (302), one end of the first spring (401) is abutted against the first blocking piece (304), and the other end of the first spring (401) is abutted against the second vent valve (302); the second spring (402) is positioned inside the first spring (401), one end of the second spring (402) is abutted against the first blocking piece (304), and the other end of the second spring (402) is abutted against the second blocking piece (305).
3. The collision-resistant self-closing valve according to claim 2, wherein: first breather valve (301) is a centrosymmetric rotator, first breather valve (301) includes first valve body back end (3011), first valve body interlude (3012) and first valve body anterior segment (3013), first valve body back end (3011) diameter is greater than the internal diameter of bulge loop (8), first valve body anterior segment (3013) diameter is less than the internal diameter of bulge loop (8), first valve body interlude (3012) are equipped with first recess, set up fifth sealing washer (505) in the first recess, the external diameter of fifth sealing washer (505) is greater than the internal diameter of bulge loop (8).
4. The collision-resistant self-closing valve according to claim 2, wherein: the second vent valve (302) is a centrally symmetrical rotating body and comprises a spring fixing platform (3021), a second valve body rear section (3022), a second valve body middle section (3023), a second valve body front section (3024) and a guide post (3025), one end of the first spring (401) is sleeved on the spring fixing table (3021) so as to limit the radial movement of the first spring (401), the diameter of the rear section (3022) of the second valve body is larger than the inner diameter of the guide section of the screw body (2), a guide column (3025) with the same diameter as the second valve body front section (3024) is arranged in the direction of the second valve body front section (3024) extending into the guide section of the screw body (2), a second groove is arranged at the middle section (3023) of the second valve body, a fourth sealing ring (504) is arranged in the second groove, the outer diameter of the fourth sealing ring (504) is larger than the inner diameter of the guide section of the thread body (2).
5. The collision-resistant self-closing valve according to claim 2, wherein: the inner surface of the valve body (1) is located between the convex ring (8) and the first baffle plate (304) and is provided with a limiting boss (9), and the inner diameter of the limiting boss (9) is smaller than that of the first baffle plate (304), so that the first baffle plate (304) is abutted against the end surface of the limiting boss (9).
6. The collision-resistant self-closing valve according to claim 2, wherein: the second separation blade (305) is a locknut in threaded connection with the connecting column (303), and the connecting column (303) is provided with an external thread in matched connection with the locknut.
7. The collision-resistant self-closing valve according to claim 2, wherein: the convex ring (8) is provided with an inclined plane end (801) and a plane end (802), a cylindrical space formed by the plane end (802) is used for accommodating the first valve body front section (3013), and a cone frustum-shaped space formed by the inclined plane end (801) is used for accommodating the fifth sealing ring (505).
8. The collision-resistant self-closing valve according to claim 1, wherein: and a third sealing ring (503) is arranged on the contact surface of the threaded connection tail end of the valve body (1) and the threaded body (2).
9. The collision-resistant self-closing valve according to claim 1, wherein: the inner side of the guide section of the thread body (2) is provided with a ring groove, and a second sealing ring (502) which is contacted with the connecting core (7) is arranged in the ring groove.
10. The collision-resistant self-closing valve according to claim 1, wherein: the contact end surface of the connecting core (7) and the thread body (2) is provided with a first sealing ring (501).
CN202110011719.5A 2021-01-04 2021-01-04 Anti-collision self-closing valve Pending CN112728121A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202110011719.5A CN112728121A (en) 2021-01-04 2021-01-04 Anti-collision self-closing valve
PCT/CN2021/119428 WO2022142502A1 (en) 2021-01-04 2021-09-18 Anti-collision self-closing valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110011719.5A CN112728121A (en) 2021-01-04 2021-01-04 Anti-collision self-closing valve

Publications (1)

Publication Number Publication Date
CN112728121A true CN112728121A (en) 2021-04-30

Family

ID=75590708

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110011719.5A Pending CN112728121A (en) 2021-01-04 2021-01-04 Anti-collision self-closing valve

Country Status (2)

Country Link
CN (1) CN112728121A (en)
WO (1) WO2022142502A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022142502A1 (en) * 2021-01-04 2022-07-07 伟鑫(广州)工业科技有限公司 Anti-collision self-closing valve

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1796839A (en) * 2004-12-30 2006-07-05 上海上龙阀门厂 Valve of sealing arrangement in two stages
CN205781584U (en) * 2016-05-27 2016-12-07 广州锐宏机械设备有限公司 A kind of sectional type double spool joint
EP3615854A1 (en) * 2017-04-28 2020-03-04 Cassellie Ltd. Valve apparatus
CN207961847U (en) * 2017-12-31 2018-10-12 简梓炜 Anti-leakage self-close valve module
CN210398050U (en) * 2019-08-29 2020-04-24 常州同敏机械科技有限公司 Piston pressure measuring joint
CN112728251A (en) * 2021-01-04 2021-04-30 伟鑫(广州)工业科技有限公司 Axial seal structure of joint
CN112728121A (en) * 2021-01-04 2021-04-30 伟鑫(广州)工业科技有限公司 Anti-collision self-closing valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022142502A1 (en) * 2021-01-04 2022-07-07 伟鑫(广州)工业科技有限公司 Anti-collision self-closing valve

Also Published As

Publication number Publication date
WO2022142502A1 (en) 2022-07-07

Similar Documents

Publication Publication Date Title
CN112728251A (en) Axial seal structure of joint
CN112728121A (en) Anti-collision self-closing valve
CN216382582U (en) Anti-collision self-closing valve
CN104061348A (en) Double pipeline hose explosion valve with adjustable action flow rate
CN110792815A (en) Shunt safety valve with automatic pressure relief structure
US5018769A (en) Adapter fitting
CN214500421U (en) Quick joint with safety lock
CN210440715U (en) Automobile oil pipe joint
CN105508777A (en) Rapid and safe integral joint device for stainless steel corrugated flexible pipes
CN209688529U (en) A kind of anti-interior leakage device for major diameter liquid line
CN210118563U (en) Pneumatic quick coupling
CN219388935U (en) Oil gas recovery valve with high sealing performance
CN113638927A (en) Hydraulic double-pipeline explosion-proof rotary joint and hydraulic double-pipeline explosion-proof loop
CN201844096U (en) Electromagnetic valve for natural gas
KR101425301B1 (en) The valve sealant fitting double joint structure
CN215580137U (en) Plugging device for inclined plane pipeline opening
CN210583918U (en) Front filter
CN201034199Y (en) Pigging ball valve screw-thread stressed top arrangement
CN219388978U (en) High-pressure thick-wall large-caliber hot bending elbow
CN220204773U (en) Explosion-proof hose
CN112567163A (en) Improved hydraulic coupling device and assembly
CN101956859A (en) Natural gas electromagnetic valve
CN212775774U (en) Quick pressure relief safety valve
CN219711773U (en) Pump package convenient to overhaul
CN207673998U (en) Explosive-proof sealed flange

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination