CN111706679A - Self-cleaning stop valve - Google Patents

Self-cleaning stop valve Download PDF

Info

Publication number
CN111706679A
CN111706679A CN202010584929.9A CN202010584929A CN111706679A CN 111706679 A CN111706679 A CN 111706679A CN 202010584929 A CN202010584929 A CN 202010584929A CN 111706679 A CN111706679 A CN 111706679A
Authority
CN
China
Prior art keywords
valve
driving lever
scraper
rod
cavity
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.)
Withdrawn
Application number
CN202010584929.9A
Other languages
Chinese (zh)
Inventor
韩国昊
李红生
邵倩倩
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN202010584929.9A priority Critical patent/CN111706679A/en
Publication of CN111706679A publication Critical patent/CN111706679A/en
Withdrawn legal-status Critical Current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
    • F16K1/02—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 with screw-spindle
    • F16K1/04—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 with screw-spindle with a cut-off member rigid with the spindle, e.g. main valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
    • B08B1/165—Scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B08B17/02—Preventing deposition of fouling or of dust
    • B08B17/04—Preventing deposition of fouling or of dust by using removable coverings
    • 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
    • F16K1/36—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
    • 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
    • F16K1/42—Valve seats
    • 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
    • F16K27/02—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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement

Landscapes

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

Abstract

The invention discloses a self-cleaning stop valve which comprises a valve body, wherein an upper valve cavity and a lower valve cavity are arranged in the valve body, a valve plate is arranged in the valve body, a valve hole is formed in the valve plate, an outlet pipe communicated with the upper valve cavity and an inlet pipe communicated with the lower valve cavity are arranged on the side surface of the valve body; a valve cover is fixedly arranged at an opening at the upper end of the upper valve cavity, a valve rod is arranged in the valve cover, and a valve clack is arranged at the lower end of the valve rod; the two sides of the sealing surface of the valve plate at the upper end of the valve hole are provided with slide rails, and a left scraper component and a right scraper component are symmetrically arranged between the two slide rails at the two sides of the valve hole; a left driving lever and a right driving lever are symmetrically hinged to two sides of the valve rod in the upper valve cavity, the upper end of the left driving lever is connected with the valve rod, the lower end of the left driving lever is connected with the left scraper component, the upper end of the right driving lever is connected with the valve rod, and the lower end of the right driving lever is connected with the right scraper component; this automatically cleaning type stop valve is simple structure not only, can clean the sealed face of valve opening upper end moreover.

Description

Self-cleaning stop valve
Technical Field
The invention belongs to the technical field of pipeline valves, and particularly relates to a self-cleaning stop valve.
Background
Shut-off valves are often installed in pipelines in the fields of petroleum, petrochemical, chemical, metallurgical, electrical power, etc. for shutting off a fluid medium being conveyed in the pipeline. Conventional shut-off valves typically include a valve body, a valve stem, a flap, and a hand wheel, the lower portion of the valve stem being located within the interior cavity of the valve body, and the flap being attached to the bottom of the valve stem. Solid impurities are often adsorbed on a valve seat sealing surface of the existing stop valve in the opening process of a valve hole, and when a valve clack is closed, the impurities are directly pressed on the impurities, so that the valve clack cannot be completely closed to generate leakage, the use effect of the stop valve is influenced, and a sealing element can be damaged seriously; and when the valve hole is opened for a long time, the valve clack is always washed by the medium, so that a sealing element on the valve clack is damaged, and the service life of the stop valve is influenced.
Disclosure of Invention
The invention aims to provide a self-cleaning stop valve which is simple in structure and can clean a sealing surface at the upper end of a valve hole.
In order to achieve the purpose, the invention provides the following technical scheme:
a self-cleaning stop valve comprises a valve body, wherein an upper valve cavity and a lower valve cavity are arranged in the valve body, a valve plate is arranged between the upper valve cavity and the lower valve cavity in the valve body, a valve hole for communicating the upper valve cavity and the lower valve cavity is formed in the valve plate, an outlet pipe communicated with the upper valve cavity and an inlet pipe communicated with the lower valve cavity are arranged on the side surface of the valve body; a valve cover is fixedly installed at an opening at the upper end of the upper valve cavity, a valve rod is arranged in the valve cover along the direction vertical to the valve plate, and the lower end of the valve rod extends into the upper valve cavity and is provided with a valve clack for controlling the on-off of the valve hole; the two sides of the sealing surface of the valve plate at the upper end of the valve hole are provided with slide rails, and a left scraper component and a right scraper component are symmetrically arranged between the two slide rails at the two sides of the valve hole; a left driving lever and a right driving lever are symmetrically hinged to two sides of the valve rod in the upper valve cavity, the upper end of the left driving lever is connected with the valve rod, the lower end of the left driving lever is connected with the left scraper component, the upper end of the right driving lever is connected with the valve rod, and the lower end of the right driving lever is connected with the right scraper component; when the valve rod moves upwards, the left driving lever drives the left scraper component to move rightwards, the right driving lever drives the right scraper component to move leftwards, when the valve rod moves downwards, the left driving lever drives the left scraper component to move leftwards, and the right driving lever drives the right scraper component to move rightwards.
Furthermore, sliding grooves are formed in the side faces of the two sliding rails, the left scraper component comprises a left scraper which is connected between the two sliding grooves in a sliding mode, a left convex plate is arranged on the left scraper, and a left spring used for forcing the left scraper to move rightwards is arranged on the left side of the left convex plate in the upper valve cavity; the right scraper component comprises a right scraper connected between the two sliding grooves in a sliding manner, a right convex plate is arranged on the right scraper, and a right spring used for forcing the right scraper to move leftwards is arranged on the right side of the right convex plate in the valve cavity; the right side of the left scraper is provided with a left arc-shaped notch, and the left side of the right scraper is provided with a right arc-shaped notch; when the valve clack is opened the valve opening completely, the right-hand member of left scraper blade and the left end of right scraper blade mutually contact, and left arc notch and right arc notch amalgamation form the circular notch coaxial with the valve opening.
Furthermore, the upper end of the left driving lever extends to be provided with a left upper connecting rod which is abutted against the valve rod, the lower end of the left driving lever extends to be provided with a left lower connecting rod which is positioned on the right side of the left convex plate, and the left lower connecting rod is provided with a left guard plate which is positioned on the right side of the left convex plate; the upper end of the right driving lever is provided with a right upper connecting rod which is abutted against the valve rod in an extending way, the lower end of the right driving lever is provided with a right lower connecting rod which is positioned on the left side of the right convex plate in an extending way, and the right lower connecting rod is provided with a right protective plate which is positioned on the left side of the right convex plate; the valve rod is equipped with the draw-in groove in the circumference side near the valve clack, and when the valve clack was opened the valve opening completely, the right-hand member of left side backplate contacted the amalgamation with the left end of right backplate and formed the baffle that is located the valve plate below, and the tip of upper left connecting rod and upper right connecting rod all is located the draw-in groove.
Furthermore, a sealing gasket is fixedly arranged at the lower end of the valve clack.
Furthermore, a sealing groove is formed in the outer side of the valve rod of the valve cover, a sealing ring sleeved on the valve rod is arranged in the sealing groove, a plug sleeved on the valve rod is fixedly mounted at the upper end of the sealing groove, a rotating groove is formed in the outer side of the valve rod of the plug, a rotating block in threaded connection with the valve rod is rotatably connected in the rotating groove, and a gland which is sleeved on the rotating block and used for preventing the rotating block from being separated from the rotating groove is fixedly mounted at an opening at the upper end of the rotating groove; the inner hole side wall of the plug and the valve rod is provided with a rotation stopping groove, and a rotation stopping block positioned in the rotation stopping groove is fixedly installed on the outer side of the valve rod.
Furthermore, a handle rod is fixedly arranged on the rotating block.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) according to the invention, the left guard plate and the right guard plate which are linked with the valve clack are arranged, so that the valve clack drives the left guard plate and the right guard plate to move and be spliced together when being opened, the left guard plate and the right guard plate are blocked at the lower end of the valve clack, and the medium is prevented from scouring a sealing gasket of the valve clack, so that the valve clack is protected;
(2) according to the invention, the left scraper and the right scraper are arranged, so that when the valve clack is opened, the left scraper moves rightwards along the sliding chute under the action of the left spring, and the right scraper moves leftwards under the action of the right spring to scrape impurities adsorbed on the sealing surface at the upper end of the valve hole, so that the cleaning effect is achieved;
(3) according to the invention, the left scraper and the right scraper are arranged, so that when the valve clack is opened, the left scraper moves rightwards along the sliding chute under the action of the left spring, the right scraper moves leftwards under the action of the right spring, and the left scraper and the right scraper are spliced and stopped on the sealing surface at the upper end of the valve hole, so that impurities cannot fall on the sealing surface again to play a role in protection.
Drawings
FIG. 1 is a sectional view of the valve flap of the present invention when open;
FIG. 2 is a sectional view of the valve flap of the present invention at the time of stopping;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 1;
FIGS. 4-5 are block diagrams of the left and right squeegees of the present invention;
fig. 6-7 are structural diagrams of the left shift lever and the right shift lever of the present invention.
Detailed Description
Referring to fig. 1-7, a self-cleaning stop valve includes a valve body 1, an upper valve cavity 101 and a lower valve cavity 102 are arranged in the valve body 1, a valve plate 1c is arranged between the upper valve cavity 101 and the lower valve cavity 102 in the valve body 1, a valve hole 1d for communicating the upper valve cavity 101 and the lower valve cavity 102 is arranged on the valve plate 1c, an outlet pipe 1a communicated with the upper valve cavity 101 and an inlet pipe 1b communicated with the lower valve cavity 102 are arranged on the side surface of the valve body 1; a valve cover 9 is fixedly installed at an opening at the upper end of the upper valve cavity 101, a valve rod 2 is arranged in the valve cover 9 along the direction vertical to the valve plate 1c, the lower end of the valve rod 2 extends into the upper valve cavity 101 and is provided with a valve clack 2b for controlling the opening and closing of a valve hole 1d, and a sealing gasket 2c is fixedly arranged at the lower end of the valve clack 2 b; the two sides of the sealing surface of the valve plate 1c at the upper end of the valve hole 1d are provided with slide rails 5, and a left scraper component and a right scraper component are symmetrically arranged between the two slide rails 5 at the two sides of the valve hole 1 d; a left driving lever 3a and a right driving lever 3b are symmetrically hinged to two sides of the valve rod 2 in the upper valve cavity 101, the upper end of the left driving lever 3a is connected with the valve rod 2, the lower end of the left driving lever 3a is connected with the left scraper component, the upper end of the right driving lever 3b is connected with the valve rod 2, and the lower end of the right driving lever 3b is connected with the right scraper component; when the valve rod 2 moves upwards, the left driving lever 3a drives the left scraper component to move rightwards, the right driving lever 3b drives the right scraper component to move leftwards, when the valve rod 2 moves downwards, the left driving lever 3a drives the left scraper component to move leftwards, and the right driving lever 3b drives the right scraper component to move rightwards.
The side surfaces of the two sliding rails 5 are respectively provided with a sliding groove 51, the left scraper component comprises a left scraper 4a which is connected between the two sliding grooves 51 in a sliding manner, a left convex plate 4a1 is arranged on the left scraper 4a, and a left spring 6a for forcing the left scraper 4a to move rightwards is arranged on the left side of the left convex plate 4a1 in the upper valve cavity 101; the right scraper component comprises a right scraper 4b connected between the two sliding grooves 51 in a sliding manner, a right convex plate 4b1 is arranged on the right scraper 4b, and a right spring 6b for forcing the right scraper 4b to move leftwards is arranged on the right side of the right convex plate 4b1 in the valve cavity; the right side of the left scraper blade 4a is provided with a left arc-shaped notch 4a2, and the left side of the right scraper blade 4b is provided with a right arc- shaped notch 4b 2; when the valve hole 1d is fully opened by the valve flap 2b, the right end of the left blade 4a and the left end of the right blade 4b are in contact with each other, and the left arc-shaped notch 4a2 and the right arc-shaped notch 4b2 are spliced to form a circular notch coaxial with the valve hole 1 d.
The upper end of the left shifting lever 3a is provided with a left upper connecting rod 3a1 which is abutted against the valve rod 2 in an extending way, the lower end of the left shifting lever 3a is provided with a left lower connecting rod 3a2 which is positioned at the right side of the left convex plate 4a1 in an extending way, and the left lower connecting rod 3a2 is provided with a left protective plate 3a3 which is positioned at the right side of the left convex plate 4a 1; the upper end of the right driving lever 3b is provided with a right upper connecting rod 3b1 which is abutted against the valve rod 2 in an extending way, the lower end of the right driving lever is provided with a right lower connecting rod 3b2 which is positioned on the left side of the right convex plate 4b1 in an extending way, and the right lower connecting rod 3b2 is provided with a right protective plate 3b3 which is positioned on the left side of the right convex plate 4b 1; the valve rod 2 is provided with a clamping groove 2a on the circumferential side surface close to the valve clack 2b, when the valve hole 1d is completely opened by the valve clack 2b, the right end of the left protective plate 3a3 and the left end of the right protective plate 3b3 are contacted and spliced to form a baffle positioned below the valve plate 1c, and the end parts of the left upper connecting rod 3a1 and the right upper connecting rod 3b1 are positioned in the clamping groove 2 a.
The valve cover 9 is provided with a sealing groove 9a on the outer side of the valve rod 2, a sealing ring 9b sleeved on the valve rod 2 is arranged in the sealing groove 9a, the upper end of the sealing groove 9a is fixedly provided with a plug 9c sleeved on the valve rod 2, the plug 9c is provided with a rotating groove 9d on the outer side of the valve rod 2, a rotating block 9f in threaded connection with the valve rod 2 is rotatably connected in the rotating groove 9d, and a gland 9e sleeved on the rotating block 9f and used for preventing the rotating block 9f from separating from the rotating groove 9d is fixedly arranged at an opening on the upper end of the rotating groove 9 d; the inner hole side wall of the plug 9c matched with the valve rod 2 is provided with a rotation stopping groove 9c1, and the outer side of the valve rod 2 is fixedly provided with a rotation stopping block 21 positioned in the rotation stopping groove 9c 1. And a handle rod 7 is fixedly arranged on the rotating block 9 f.
When the stop valve is opened, the rotary handle rod 7 drives the rotary block 9f to rotate, the control valve rod 2 drives the valve clack 2b to ascend when the rotary block 9f rotates, the valve hole 1d is opened, and when the valve clack 2b ascends to a certain height, the left guard plate 3a3 is pushed to move rightwards through the left scraper blade 4a under the action of the left spring 6a, so that the left shift lever 3a drives the left upper connecting rod 3a1 to rotate anticlockwise, the end part of the left upper connecting rod 3a1 enters the clamping groove 2a, and similarly, the right guard plate 3b3 is pushed to move leftwards through the right scraper blade 4b under the action of the right spring 6b, so that the right shift lever 3b drives the right upper connecting rod 3b1 to rotate clockwise, and the end part of the right upper connecting rod 3b1 enters; the valve rod 2 continuously rises, the left driving lever 3a is driven to continuously rotate by the left upper connecting rod 3a1 positioned in the clamping groove 2a, the right driving lever 3b is driven to continuously rotate by the right upper connecting rod 3b1 positioned in the clamping groove 2a until the valve hole 1d is completely opened by the valve plate 1c, the right end of the left protective plate 3a3 and the left end of the right protective plate 3b3 are contacted and spliced to form a baffle plate positioned below the valve plate 1c, and the baffle plate is blocked below the valve clack 2b to prevent the valve clack 2b and the sealing gasket 2c from being washed by media; in the process, the left scraper 4a moves rightwards under the action of the left spring 6a, the right scraper 4b moves leftwards under the action of the right spring 6b until the right end of the left scraper 4a is contacted with the left end of the right scraper 4b, the left arc-shaped notch 4a2 and the right arc-shaped notch 4b2 are spliced to form a circular notch coaxial with the valve hole 1d, impurities adsorbed on the sealing surface at the upper end of the valve hole 1d are scraped into the valve hole 1d in the process of moving the left scraper 4a and the right scraper 4b in opposite directions, and the impurities are taken out of the stop valve along with the flow of a medium, so that the opening of the stop valve is completed.
When the stop valve needs to be closed, the reverse rotation handle rod 7 drives the rotation block 9f to rotate reversely, the control valve rod 2 drives the valve clack 2b to descend when the rotation block 9f rotates reversely, the left protective plate 3a3 and the right protective plate 3b3 are driven to rotate to separate towards two sides when the valve rod 2 descends due to the matching of the clamping groove 2a with the end parts of the left upper connecting rod 3a1 and the right upper connecting rod 3b1, the left protective plate 3a3 pushes the left convex plate 4a1 to move leftwards against the elastic force of the left spring 6a, the right protective plate 3b3 pushes the right convex plate 4b1 to move rightwards against the elastic force of the right spring 6b, when the end parts of the left upper connecting rod 3a1 and the right upper connecting rod 3b1 are separated from the clamping groove 2a, the left protective plate 3a3 and the right protective plate 3b3 are separated to the maximum position and stop rotating, the left scraper 4a and the right scraper 4b are separated to the limit position, and the valve clack 2b, complete the shut off valve shut off (as shown in figure 2).
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. A self-cleaning stop valve comprises a valve body, wherein an upper valve cavity and a lower valve cavity are arranged in the valve body, a valve plate is arranged between the upper valve cavity and the lower valve cavity in the valve body, a valve hole for communicating the upper valve cavity and the lower valve cavity is formed in the valve plate, an outlet pipe communicated with the upper valve cavity and an inlet pipe communicated with the lower valve cavity are arranged on the side surface of the valve body; a valve cover is fixedly installed at an opening at the upper end of the upper valve cavity, a valve rod is arranged in the valve cover along the direction vertical to the valve plate, and the lower end of the valve rod extends into the upper valve cavity and is provided with a valve clack for controlling the on-off of the valve hole; the scraper device is characterized in that sliding rails are arranged on two sides of a sealing surface of the valve plate at the upper end of the valve hole, and a left scraper component and a right scraper component are symmetrically arranged between the two sliding rails on two sides of the valve hole; a left driving lever and a right driving lever are symmetrically hinged to two sides of the valve rod in the upper valve cavity, the upper end of the left driving lever is connected with the valve rod, the lower end of the left driving lever is connected with the left scraper component, the upper end of the right driving lever is connected with the valve rod, and the lower end of the right driving lever is connected with the right scraper component; when the valve rod moves upwards, the left driving lever drives the left scraper component to move rightwards, the right driving lever drives the right scraper component to move leftwards, when the valve rod moves downwards, the left driving lever drives the left scraper component to move leftwards, and the right driving lever drives the right scraper component to move rightwards.
2. The self-cleaning stop valve of claim 1, wherein the side surfaces of the two sliding rails are provided with sliding grooves, the left scraper assembly comprises a left scraper slidably connected between the two sliding grooves, the left scraper is provided with a left convex plate, and the upper valve cavity is provided with a left spring for forcing the left scraper to move rightwards on the left side of the left convex plate; the right scraper component comprises a right scraper connected between the two sliding grooves in a sliding manner, a right convex plate is arranged on the right scraper, and a right spring used for forcing the right scraper to move leftwards is arranged on the right side of the right convex plate in the valve cavity; the right side of the left scraper is provided with a left arc-shaped notch, and the left side of the right scraper is provided with a right arc-shaped notch; when the valve clack is opened the valve opening completely, the right-hand member of left scraper blade and the left end of right scraper blade mutually contact, and left arc notch and right arc notch amalgamation form the circular notch coaxial with the valve opening.
3. The self-cleaning stop valve of claim 2, wherein the upper end of the left driving lever is extended with a left upper connecting rod abutting against the valve rod, the lower end of the left driving lever is extended with a left lower connecting rod positioned at the right side of the left convex plate, and the left lower connecting rod is provided with a left guard plate positioned at the right side of the left convex plate; the upper end of the right driving lever is provided with a right upper connecting rod which is abutted against the valve rod in an extending way, the lower end of the right driving lever is provided with a right lower connecting rod which is positioned on the left side of the right convex plate in an extending way, and the right lower connecting rod is provided with a right protective plate which is positioned on the left side of the right convex plate; the valve rod is equipped with the draw-in groove in the circumference side near the valve clack, and when the valve clack was opened the valve opening completely, the right-hand member of left side backplate contacted the amalgamation with the left end of right backplate and formed the baffle that is located the valve plate below, and the tip of upper left connecting rod and upper right connecting rod all is located the draw-in groove.
4. The self-cleaning shut-off valve of claim 1, wherein a gasket is fixedly disposed on a lower end of the valve flap.
5. The self-cleaning stop valve of claim 1, wherein the valve cover is provided with a sealing groove on the outer side of the valve rod, a sealing ring sleeved on the valve rod is arranged in the sealing groove, a plug sleeved on the valve rod is fixedly mounted at the upper end of the sealing groove, a rotary groove is arranged on the outer side of the valve rod, a rotary block in threaded connection with the valve rod is rotatably connected in the rotary groove, and a gland sleeved on the rotary block and used for preventing the rotary block from being separated from the rotary groove is fixedly mounted at an opening at the upper end of the rotary groove; the inner hole side wall of the plug and the valve rod is provided with a rotation stopping groove, and a rotation stopping block positioned in the rotation stopping groove is fixedly installed on the outer side of the valve rod.
6. The self-cleaning stop valve of claim 5, wherein a handle lever is fixedly mounted to the rotating block.
CN202010584929.9A 2020-06-24 2020-06-24 Self-cleaning stop valve Withdrawn CN111706679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010584929.9A CN111706679A (en) 2020-06-24 2020-06-24 Self-cleaning stop valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010584929.9A CN111706679A (en) 2020-06-24 2020-06-24 Self-cleaning stop valve

Publications (1)

Publication Number Publication Date
CN111706679A true CN111706679A (en) 2020-09-25

Family

ID=72542933

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010584929.9A Withdrawn CN111706679A (en) 2020-06-24 2020-06-24 Self-cleaning stop valve

Country Status (1)

Country Link
CN (1) CN111706679A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112197022A (en) * 2020-10-28 2021-01-08 苏凤霞 Gate valve convenient to maintain
CN113124171A (en) * 2021-04-13 2021-07-16 俞伟光 Scour prevention stop valve
CN113217636A (en) * 2021-04-01 2021-08-06 陈玉霞 Stop valve
CN113531184A (en) * 2021-07-02 2021-10-22 闫正伟 Valve with self-cleaning function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112197022A (en) * 2020-10-28 2021-01-08 苏凤霞 Gate valve convenient to maintain
CN113217636A (en) * 2021-04-01 2021-08-06 陈玉霞 Stop valve
CN113124171A (en) * 2021-04-13 2021-07-16 俞伟光 Scour prevention stop valve
CN113124171B (en) * 2021-04-13 2022-06-21 君品集团有限公司 Scour prevention stop valve
CN113531184A (en) * 2021-07-02 2021-10-22 闫正伟 Valve with self-cleaning function

Similar Documents

Publication Publication Date Title
CN111706679A (en) Self-cleaning stop valve
CN107314122B (en) Rotary control valve with clamping valve seat
US3186682A (en) Butterfly valve disc and shaft sealing structure
US2918934A (en) Check valve
KR20110057627A (en) Gate valve
CN204985799U (en) Lifting type plug -valve
CN205331466U (en) Pulp water gate valve
CN105065702A (en) Lifting plug valve and control method thereof
KR20200083799A (en) Double-disc type butterfly valve
CN111720557A (en) Novel stop valve
CN111720569A (en) Flat gate valve
CN113124171B (en) Scour prevention stop valve
CN106015611A (en) Ceramic disk cutting valve
CN106090273B (en) A kind of ceramics double disc inlet valve
CN210218749U (en) Spring compensation type plug valve with movable valve seat
CN111536253A (en) Ball valve with long service life
CN111765264B (en) Plug valve
CN113251159B (en) Stop valve
CN215908433U (en) High-temperature-resistant high-pressure-resistant bidirectional wear-free ball valve
CN111649140A (en) Butterfly valve
KR100932400B1 (en) Ball valve with metal seat
CN212028539U (en) Anti-corrosion stop valve
CN208519258U (en) Ball valve
CN113007376A (en) Anti-blocking ball valve
CN211624271U (en) Self-cleaning ball valve for chemical equipment

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
WW01 Invention patent application withdrawn after publication

Application publication date: 20200925

WW01 Invention patent application withdrawn after publication