CN115289232B - Anti-theft gate valve with telescopic function - Google Patents

Anti-theft gate valve with telescopic function Download PDF

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Publication number
CN115289232B
CN115289232B CN202211225029.0A CN202211225029A CN115289232B CN 115289232 B CN115289232 B CN 115289232B CN 202211225029 A CN202211225029 A CN 202211225029A CN 115289232 B CN115289232 B CN 115289232B
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China
Prior art keywords
valve
tool
hand wheel
outer sleeve
valve rod
Prior art date
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Active
Application number
CN202211225029.0A
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Chinese (zh)
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CN115289232A (en
Inventor
万建华
侯伯忠
何健
周艳芳
蒲建康
李杨
陈燚
陈仁志
梁超
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Chengdu Chuanli Smart Fluid Equipment Co ltd
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Chengdu Chuanli Smart Fluid Equipment Co ltd
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Priority to CN202211225029.0A priority Critical patent/CN115289232B/en
Publication of CN115289232A publication Critical patent/CN115289232A/en
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Publication of CN115289232B publication Critical patent/CN115289232B/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
    • 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
    • F16K3/02—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 flat sealing faces; Packings therefor
    • F16K3/0281—Guillotine or blade-type valves, e.g. no passage through 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating 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
    • 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
    • F16K3/02—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 flat sealing faces; Packings therefor
    • F16K3/0227—Packings
    • 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
    • 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
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • 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
    • F16K35/00—Means to prevent accidental or unauthorised actuation
    • 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
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
    • F16K41/06—Spindle sealings with stuffing-box ; Sealing rings with at least one ring attached to both spindle and housing
    • 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
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Abstract

The invention discloses an anti-theft gate valve with a telescopic function, which comprises a valve body, a valve cover, a pressing ring, a valve rod and a special hand wheel tool, wherein the valve cover is connected with the valve body; the special hand wheel tool comprises an eccentric shaft, a base, a connecting shaft, a cylindrical pin, a square bump, a tool outer sleeve and a hand wheel, wherein one end of the eccentric shaft is eccentrically arranged at the bottom of the connecting shaft, the other end of the eccentric shaft is connected with the base, the hand wheel is detachably connected with the connecting shaft, the eccentric shaft and the tool outer sleeve are rotationally matched, the square bump is provided with a through hole, the cylindrical pin is arranged in the through hole, and the cylindrical pin is positioned between the tool outer sleeve and the eccentric shaft; the tool jacket is provided with a sliding hole; the invention aims to solve the problem of poor safety of the valve in the prior art.

Description

Anti-theft gate valve with telescopic function
Technical Field
The invention relates to the technical field of valves, in particular to an anti-theft gate valve with a telescopic function.
Background
At present, a gate valve used for a drainage system is provided, wherein an anti-theft opening device of the gate valve adopts a triangular or square special-shaped design on a valve rod, and is opened and closed by adopting a special-shaped mechanical tool, some special-purpose opening tools matched with a magnetic lock device are adopted, the magnetic lock device mainly comprises a spring, a stop pin, magnetic steel and the like, the opening tool is matched with the magnetic steel, when the magnetic lock valve is locked, the spring pushes the stop pin to be positioned at a locking position, during unlocking, the magnetic steel on the unlocking tool is repelled with the magnetic steel on the magnetic lock device, the stop pin is pushed to exit from the locking position, and the unlocking tool is rotated to unlock the magnetic lock device of the gate valve.
The valve adopting the valve rod special-shaped structural design or the magnetic lock device design in the prior art can be seen from the appearance, the special opening tool has the defects of easy imitation, easy damage and the like, and the common valve does not have the telescopic function and is inconvenient to install.
Disclosure of Invention
The invention provides an anti-theft gate valve with a telescopic function, and aims to solve the problem of poor safety of a valve in the prior art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an anti-theft gate valve with a telescopic function comprises a valve body, a valve cover, a pressing ring, a valve rod and a special hand wheel tool, wherein the valve cover is connected with the valve body, the pressing ring is in threaded connection with the inner surface of the valve cover, the valve rod is in rotating fit with the valve cover, a flashboard is in threaded connection with the valve rod and used for cutting off or opening communication between an outlet and an inlet in the valve body, and the special hand wheel tool is used for rotating the valve rod;
the special hand wheel tool comprises an eccentric shaft, a base, a connecting shaft, a cylindrical pin, a square bump, a tool outer sleeve and a hand wheel, wherein one end of the eccentric shaft is eccentrically arranged at the bottom of the connecting shaft, the other end of the eccentric shaft is connected with the base, the hand wheel is detachably connected with the connecting shaft, the eccentric shaft and the tool outer sleeve are in running fit, a through hole is formed in the square bump, the cylindrical pin is arranged inside the through hole, and the cylindrical pin is positioned between the tool outer sleeve and the eccentric shaft; the tool outer sleeve is provided with a sliding hole, the end face of the square bump is flush with the sliding hole, and the square bump is used for sliding to the outside of the tool outer sleeve through the sliding hole at a position parallel to the tool outer sleeve; the valve rod is provided with a cylindrical hole, the tool outer sleeve is used for being placed on the cylindrical hole, the cylindrical hole is provided with a groove which is the same as the square bump in shape, and the groove is used for being matched with the square bump;
the inlet on the valve body is provided with internal threads, the outlet is provided with a telescopic pipe, the telescopic pipe is sleeved with a clamping ring, and the telescopic pipe passes through the pressing ring nut and then is detachably connected with the valve body.
Further defined, the axis of the cylindrical bore is collinear with the axis of the valve stem.
Further, the cover plate is rotatably arranged above the valve cover through a screw.
Further optimize, the terminal surface in valve body exit has an inclined plane, be provided with a sealed pad on the inclined plane, the valve body passes through sealed pad and flexible pipe sealing connection.
Further limiting, an annular groove is formed in the valve rod, an O-shaped sealing ring is arranged in the annular groove, and the valve rod is connected with the valve cover in a rotating and sealing mode through the O-shaped sealing ring.
Further defined, the valve stem is connected to the gate by a trapezoidal thread.
Further optimized, the outer end of the extension tube is connected with a loose joint nut.
Further preferably, a limiting ring is arranged on the connecting shaft, the hand wheel sleeve is arranged on the connecting shaft and is in contact with the limiting ring, a nut is arranged on the connecting shaft in a threaded mode and is used for clamping and fixing the hand wheel between the nut and the limiting ring.
Further optimize, be provided with the gasket between valve gap and the valve body.
Compared with the prior art, the invention has the following beneficial effects:
the invention mainly comprises a valve body, a flashboard, a valve rod, a gasket, a pressing ring, a valve cover and a cover plate, wherein in the actual use process, a worker matches the valve body with the flashboard, the thread of the valve rod is connected with the flashboard, the valve cover is connected with the valve body, and the pressing ring is connected with the valve cover through the thread to limit the valve rod; there is a cylindrical hole in the middle of the valve rod up end, the internal diameter in cylindrical hole matches with instrument overcoat external diameter size, the square convex block is injectd between instrument overcoat and eccentric shaft through the cylindric lock, the apron on the valve gap is opened the back, put the hand wheel instrument into the cylindrical hole of valve rod, the rotatory hand wheel, the eccentric shaft is ejecting with the square convex block cooperation with the downthehole recess of cylindrical hole of valve rod, spacing through square convex block and recess, make the hand wheel rotate the valve rod rotation, the valve rod rotation drives the gate valve through the screw thread and reciprocates, thereby realize opening and close of valve, the other end of valve body has flexible pipe, there is a rand on the flexible pipe, the exit end of valve body is fixed flexible pipe with the clamping ring nut, the benefit of setting like this is that this gate valve is difficult discernment in the outward appearance theftproof opening device, can effectually reduce the special burglary-resisting valve of installation by the risk of artificial destruction and imitation special tool opening, have higher theftproof opening performance, and one end area is flexible function, easy to assemble. The invention solves the problem of low rotation precision of the valve rod through the groove structure and improves the rotation control precision of the valve rod. Because the groove structure is arranged, the square bump and the connecting structure thereof are not easy to take out, and therefore, the inclined plane structure is arranged at the top of the square bump, and the problem that the whole square bump is not easy to take out is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of the present invention.
FIG. 2 is a schematic view showing the connection relationship between the tool sheath, the cylindrical pin and the convex block according to the present invention.
FIG. 3 is a front view of the tool casing and square projection of the present invention.
In the figure, 101-valve body, 102-flashboard, 103-valve rod, 104-gasket, 105-pressing ring, 106-O-shaped sealing ring, 107-valve cover, 108-cover plate, 109-screw, 110-collar, 111-telescopic pipe, 112-pressing ring nut, 113-loose joint nut, 114-eccentric shaft, 115-cylindrical pin, 116-square bump, 117-tool jacket, 118-handwheel, 119-nut, 120-groove, 121-sealing gasket, 122-limiting ring, 123-sliding hole, 124-connecting shaft and 125-base.
Detailed Description
The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. Other embodiments used by those skilled in the art can be obtained without any creative effort based on the embodiments in the present invention, and all of them belong to the protection scope of the present invention.
Example one
Referring to fig. 1-3, the embodiment discloses an anti-theft gate valve with a telescopic function, which includes a valve body 101, a valve cap 107, a pressing ring 105, a valve rod 103 and a special hand wheel tool, wherein the valve cap 107 is connected with the valve body 101, the pressing ring 105 is in threaded connection with the inner surface of the valve cap 107, the valve rod 103 is in rotating fit with the valve cap 107, a gate plate 102 is screwed on the valve rod 103, the gate plate 102 is used for cutting off or opening the communication between an outlet and an inlet on the valve body 101, and the special hand wheel tool is used for rotating the valve rod 103;
the special hand wheel tool comprises an eccentric shaft 114, a base 125, a connecting shaft 124, a cylindrical pin 115, a square bump 116, a tool outer sleeve 117 and a hand wheel 118, wherein one end of the eccentric shaft 114 is eccentrically arranged at the bottom of the connecting shaft 124, the other end of the eccentric shaft is connected with the base 125, the hand wheel 118 is detachably connected with the connecting shaft 124, the eccentric shaft 114 and the tool outer sleeve 117 are in running fit, a through hole is formed in the square bump 116, the cylindrical pin 115 is used for being installed inside the through hole, and the cylindrical pin 115 is located between the tool outer sleeve 117 and the eccentric shaft 114; the tool outer sleeve 117 is provided with a sliding hole 123, the end surface of the square bump 116 is flush with the sliding hole, and the square bump 116 is used for sliding to the outside of the tool outer sleeve 117 through the sliding hole 123 at a position parallel to the tool outer sleeve 117; a cylindrical hole is formed in the valve rod 103, the tool outer sleeve 117 is used for being placed on the cylindrical hole, a groove 120 with the same shape as the square bump 116 is formed in the cylindrical hole, and the groove 120 is used for being matched with the square bump 116;
an internal thread is arranged at an inlet on the valve body 101, an expansion pipe 111 is arranged at an outlet, a clamping ring 110 is sleeved on the expansion pipe 111, and the expansion pipe 111 is detachably connected with the valve body 101 after penetrating through a clamping ring nut 112;
the valve mainly comprises a valve body 101, a flashboard 102, a valve rod 103, a gasket 104, a pressing ring 105, a valve cover 107 and a cover plate 108, wherein in the actual use process, a worker matches the valve body 101 with the flashboard 102, threads on the valve rod 103 are connected with the flashboard 102, the valve cover 107 is connected with the valve body 101, and the pressing ring 105 is connected with the valve cover 107 through threads so as to limit the valve rod 103; a cylindrical hole is formed in the middle of the upper end face of the valve rod 103, the inner diameter of the cylindrical hole is matched with the outer diameter of a tool outer sleeve 117, a square bump 116 is limited between the tool outer sleeve 117 and an eccentric shaft 114 through a cylindrical pin 115, after a cover plate 108 on a valve cover 107 is opened, a hand wheel 118 tool is placed in the cylindrical hole of the valve rod 103, the hand wheel 118 is rotated, the eccentric shaft 114 ejects the square bump 116 out to be matched with a groove 120 in the cylindrical hole of the valve rod 103, the hand wheel 118 can drive the valve rod 103 to rotate (the rotation of the valve rod 103 can be realized by always rotating the hand wheel 118) through the limitation of the square bump 116 and the groove 120, the valve rod 103 rotates to drive a gate valve to move up and down through threads, so that the opening and closing of the valve are realized, an extension tube 111 is arranged at the other end of the valve body 101, a clamping ring 110 is arranged on the extension tube 111, the outlet end of the valve body 101 is fixed on the extension tube 111 through a clamping ring nut 112, the anti-theft device is good in appearance, the risk that the anti-theft device is damaged by people and the special anti-theft valve is damaged and the special anti-opening of the imitation tool can be effectively reduced, the anti-theft valve has high expansion and the anti-theft performance, one end has the extension function, and is convenient to install.
Further, the axial center of the cylindrical hole is collinear with the axial center of the valve rod 103, so that the valve rod 103 and the tool sleeve 117 can rotate coaxially when the tool sleeve 117 is placed into the cylindrical hole.
Further, the cover plate 108 is rotatably disposed above the valve cover 107 by a screw 109, and during actual use, the cover plate 108 can horizontally rotate around the screw 109 above the valve cover 107, so as to open the valve cover 107 or close the valve cover 107.
Further optimize, the terminal surface in valve body 101 exit has an inclined plane, be provided with a sealed pad 121 on the inclined plane, valve body 101 passes through sealed pad 121 and telescopic pipe 111 sealing connection, and the advantage of setting up the inclined plane can be so that the sealed relation between sealed pad 121 and telescopic link and the valve body 101 is better.
Further, an annular groove is formed in the valve rod 103, an O-ring 106 is arranged in the annular groove, the valve rod 103 is connected with the valve cover 107 in a rotating and sealing mode through the O-ring 106, and the O-ring 106 is arranged to prevent water leakage between the valve rod 103 and the valve cover 107.
Further, the valve rod 103 is connected with the gate plate 102 through trapezoidal threads, and the trapezoidal threads are selected because the inner threads and the outer threads of the trapezoidal threads are tightly attached to the conical surface and are not easy to loosen.
Further preferably, the outer end of the telescopic tube 111 is connected with a loose joint nut 113, and the arrangement of the loose joint nut 113 can facilitate the connection of the telescopic tube 111 with the water meter through the loose joint nut 113.
Preferably, a gasket 104 is arranged between the bonnet 107 and the valve body 101.
It should be noted that, in an actual use process, in order to conveniently take the entire special handwheel tool, the upper end surface of the square bump 116 is of an inclined surface structure, so that when the handwheel tool is taken integrally, the groove 120 extrudes the top of the square bump 116, and the square bump 116 is extruded into the tool outer sleeve 117 to finish taking the entire special handwheel tool.
Example two
Referring to fig. 1-3, the present embodiment is further optimized based on the first embodiment, in the present embodiment, a limiting ring 122 is disposed on a connecting shaft 124, a handwheel 118 is disposed on the connecting shaft 124 and contacts with the limiting ring 122, a nut 119 is threaded on the connecting shaft 124, and the nut 119 is used for clamping and fixing the handwheel 118 between the nut 119 and the limiting ring 122;
the advantage of this setting is can make hand wheel 118 can dismantle the setting on connecting axle 124, conveniently changes hand wheel 118.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying any number of indicated technical features, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. An anti-theft gate valve with a telescopic function comprises a valve body (101), a valve cover (107), a pressing ring (105), a valve rod (103) and a special hand wheel tool, wherein the valve cover (107) is connected with the valve body (101), the valve rod (103) is in running fit with the valve cover (107), a flashboard (102) is connected onto the valve rod (103) in a threaded mode, the flashboard (102) is used for cutting off or opening communication between an outlet and an inlet on the valve body (101), and the special hand wheel tool is used for rotating the valve rod (103); the special hand wheel tool comprises an eccentric shaft (114), a base (125), a connecting shaft (124), a cylindrical pin (115), a tool outer sleeve (117) and a hand wheel (118); one end of the eccentric shaft (114) is eccentrically arranged at the bottom of the connecting shaft (124), the other end of the eccentric shaft is connected with the base (125), and the hand wheel (118) is detachably connected with the connecting shaft (124);
the method is characterized in that:
the pressing ring (105) is in threaded connection with the inner surface of the valve cover (107), a square bump (116) is further arranged, the connecting shaft (124) and the eccentric shaft (114) are in running fit with the tool outer sleeve (117), a through hole is formed in the square bump (116), the cylindrical pin (115) is used for being installed inside the through hole, and the cylindrical pin (115) is located between the tool outer sleeve (117) and the eccentric shaft (114); the tool outer sleeve (117) is provided with a sliding hole (123), the end face of the square bump (116) is flush with the sliding hole (123), and the square bump (116) is used for sliding to the outside of the tool outer sleeve (117) through the sliding hole (123) at a position parallel to the tool outer sleeve (117); the anti-theft gate valve is characterized in that a cylindrical hole is formed in the valve rod (103), the tool outer sleeve (117) is used for being placed on the cylindrical hole, a groove (120) with the same shape as the square bump (116) is formed in the cylindrical hole, and the groove (120) is used for being matched with the square bump (116), so that the anti-theft gate valve has the advantages that the anti-theft gate valve is not easy to identify in appearance, the risk that a special anti-theft valve is artificially damaged and opened by a special imitation tool can be effectively reduced, the anti-theft gate valve has high anti-theft performance, and one end of the anti-theft gate valve has a telescopic function and is convenient to install; the upper end surface of the square bump (116) is of an inclined surface structure, when the whole hand wheel tool is taken, the groove (120) extrudes the top of the square bump (116), so that the square bump (116) is extruded into the tool outer sleeve (117) to finish the whole taking of the special hand wheel tool;
an annular groove is formed in the valve rod (103), an O-shaped sealing ring (106) is arranged in the annular groove, and the valve rod (103) is in rotary sealing connection with the valve cover (107) through the O-shaped sealing ring (106);
an internal thread is arranged at an inlet on the valve body (101), a telescopic pipe (111) is arranged at an outlet, a clamping ring (110) is sleeved on the telescopic pipe (111), and the telescopic pipe (111) is detachably connected with the valve body (101) after penetrating through a clamping ring nut (112);
the cover plate (108) is rotatably arranged above the valve cover (107) through a screw (109);
the end face of the outlet of the valve body (101) is provided with an inclined plane, a sealing gasket (121) is arranged on the inclined plane, and the valve body (101) is connected with the telescopic pipe (111) in a sealing mode through the sealing gasket (121).
2. The anti-theft gate valve with the telescopic function according to claim 1, characterized in that: the axis of the cylindrical hole is collinear with the axis of the valve rod (103).
3. The anti-theft gate valve with the telescopic function according to claim 1, characterized in that: the valve rod (103) is connected with the gate plate (102) through trapezoidal threads.
4. The anti-theft gate valve with the telescopic function according to claim 1, characterized in that: the outer end of the telescopic pipe (111) is connected with a loose joint nut (113).
5. The anti-theft gate valve with the telescopic function according to claim 1, characterized in that: a limiting ring (122) is arranged on the connecting shaft (124), the hand wheel (118) is sleeved on the connecting shaft (124) and is in contact with the limiting ring (122), a nut (119) is threaded on the connecting shaft (124), and the nut (119) is used for limiting the hand wheel (118) between the nut (119) and the limiting ring (122).
6. The anti-theft gate valve with the telescopic function according to claim 1, characterized in that: a gasket (104) is arranged between the valve cover (107) and the valve body (101).
CN202211225029.0A 2022-10-09 2022-10-09 Anti-theft gate valve with telescopic function Active CN115289232B (en)

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CN202211225029.0A CN115289232B (en) 2022-10-09 2022-10-09 Anti-theft gate valve with telescopic function

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Application Number Priority Date Filing Date Title
CN202211225029.0A CN115289232B (en) 2022-10-09 2022-10-09 Anti-theft gate valve with telescopic function

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CN115289232B true CN115289232B (en) 2023-04-07

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Publication number Priority date Publication date Assignee Title
GB373478A (en) * 1930-07-30 1932-05-26 Yoshikata Ushio Improvements in butterfly valves
CN201170374Y (en) * 2008-02-02 2008-12-24 青州市春晖科技发展有限公司 Anti-theft valve
CN204153303U (en) * 2014-10-15 2015-02-11 永嘉县恒正阀门有限公司 Anti-theft security stop valve

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