CN117588577A - Double-ball sealing ball valve - Google Patents

Double-ball sealing ball valve Download PDF

Info

Publication number
CN117588577A
CN117588577A CN202311550562.9A CN202311550562A CN117588577A CN 117588577 A CN117588577 A CN 117588577A CN 202311550562 A CN202311550562 A CN 202311550562A CN 117588577 A CN117588577 A CN 117588577A
Authority
CN
China
Prior art keywords
valve
ball
balls
bevel gear
clutch
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
CN202311550562.9A
Other languages
Chinese (zh)
Inventor
胡锦旭
林钻泽
李承鑫
林文理
林理杰
陈强大
丁晓月
陈创造
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.)
Kvc Valve Group Co ltd
Original Assignee
Kvc Valve Group 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 Kvc Valve Group Co ltd filed Critical Kvc Valve Group Co ltd
Priority to CN202311550562.9A priority Critical patent/CN117588577A/en
Publication of CN117588577A publication Critical patent/CN117588577A/en
Pending legal-status Critical Current

Links

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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0647—Spindles or actuating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
    • B01D35/046—Plug, tap, or cock filters filtering elements mounted in or on a faucet the filtering element being mounted in the faucet plug
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating 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
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • 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
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/535—Mechanical actuating means with toothed gearing for rotating 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
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/22—Features relating to lubrication
    • F16K5/227—Features relating to lubrication for plugs with spherical surfaces
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F16D2011/008—Clutches in which the members have interengaging parts characterised by the form of the teeth forming the inter-engaging parts; Details of shape or structure of these teeth

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Taps Or Cocks (AREA)

Abstract

The invention discloses a double-ball sealing ball valve, which comprises a valve body, a valve rod and valve balls, wherein a left pipe orifice and a right pipe orifice are respectively arranged at two ends of the valve body, two valve balls are in rotary sealing connection between the left pipe orifice and the right pipe orifice, the two valve balls are arranged symmetrically up and down, a transverse valve hole communicated with the left pipe orifice or the right pipe orifice is arranged on the valve balls, a vertical valve hole communicated with each other up and down is arranged on the transverse valve hole, a bypass valve and a clutch are arranged on the side wall of the valve body between the two valve balls, and the clutch is used for controlling the two valve balls to combine to realize the simultaneous rotation of the two valve balls for opening and closing, or controlling the two valve balls to separate to realize the independent rotation of the two valve balls for opening and closing. The two valve balls can be connected through the clutch under the working state, so that the simultaneous rotation is realized, the sealing performance and the flow regulation precision of the valve are improved, the two valve balls can be separated for independent rotation, when one valve ball is sealed and leaks, the other valve ball still can play a role in closing and sealing, and the safety of a pipeline system is ensured.

Description

Double-ball sealing ball valve
Technical Field
The invention relates to the technical field of ball valves, in particular to a double-ball sealing ball valve.
Background
In pipeline systems, ball valve devices are frequently started, a group of balls are matched with valve seats to ensure the sealing of the valves, and once a sealing structure fails, leakage of the pipeline system is caused, so that economic loss is caused. Be provided with a plurality of ball valves on the same pipeline, the space occupies greatly, and has the drawback of consuming time and consuming power when a plurality of ball valves are installed, are dismantled and maintain, have still increased extra installation cost and maintenance cost simultaneously. The utility model discloses a double-ball hard sealing floating ball valve in the publication number CN218913837U, which comprises a valve body, a valve rod, a valve seat and a clamp holder; the side of the valve body is provided with a needle valve head assembly between the two spheres. Under the working condition, the valve sealing performance is reliable, when one ball body is sealed to leak, the other ball body can still play a sealing role, so that the safety of a pipeline system is ensured. The needle valve head component and the screw plug are matched for use, so that the functions of channel pollution discharge, pressure relief, auxiliary bypass and the like are safely realized. The drawbacks of the above prior art are: the installation of two valve balls is to process two sealing surfaces, leakage is easy to occur, the positions of two valve rods are staggered, the valve body is inconvenient to process the installation side holes of the two valve rods, the valve body is inconvenient to operate and control simultaneously to open and close, and the two valve balls are easy to mutually interfere when flow regulation is carried out, so that the control precision is poor.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides the double-ball sealing ball valve which is high in sealing performance and convenient to process, and the two valve balls can rotate simultaneously, so that the flow regulation precision is improved.
The invention solves the technical problems by adopting the technical scheme that: the utility model provides a two ball seal ball valves, includes valve body, valve rod and valve ball, and the both ends of valve body are equipped with left mouth of pipe and right mouth of pipe respectively, and rotation sealing connection has two valve balls between left mouth of pipe and the right mouth of pipe, rotation sealing connection two valve rods on the valve body, the inner of two valve rods respectively with two valve balls fixed connection, its characterized in that: the two valve balls are arranged symmetrically up and down, a transverse valve hole communicated with a left pipe orifice or a right pipe orifice is formed in the valve ball, a vertical valve hole communicated with each other up and down is formed in the transverse valve hole, a bypass valve and a clutch are arranged between the two valve balls on the side wall of the valve body, and the clutch is used for controlling the two valve balls to combine to realize that the two valve balls rotate simultaneously to open and close, or controlling the two valve balls to separate to realize that the two valve balls rotate independently to open and close.
Further perfecting, the clutch comprises an upper bevel gear, a lower bevel gear, a bridging bevel gear and a clutch screw, wherein the upper bevel gear and the lower bevel gear are fixedly connected with two valve balls respectively, central holes communicated with vertical valve holes are formed in the upper bevel gear and the lower bevel gear respectively, the clutch screw is in threaded connection with a valve body, a hand wheel is fixedly arranged at the outer end of the clutch screw, the bridging bevel gear is rotatably arranged at the inner end of the clutch screw, and the upper side and the lower side of the bridging bevel gear are respectively in meshed connection with the upper bevel gear and the lower bevel gear.
Further perfecting, a three-way isolation pipe is arranged between the two valve balls, the upper end and the lower end of the three-way isolation pipe are respectively connected with the two central holes in a rotating way, the middle part of the three-way isolation pipe is fixedly connected with a bypass valve, and a lubrication cavity for storing lubricating oil is arranged between the three-way isolation pipe and the valve body.
Further perfecting, the side wall of the three-way isolation pipe is fixedly provided with a guide rod, the inner end surface of the clutch screw is provided with a guide hole, and the guide hole is in sliding connection with the guide rod.
Further perfecting, the left pipe orifice and the right pipe orifice are respectively internally provided with an auxiliary orifice, and the two auxiliary orifices are respectively communicated with the transverse valve holes of the two valve balls.
Further perfecting, the auxiliary port is provided with a sealing cover.
Further perfecting, a filter screen is fixedly arranged at one end of the transverse valve hole.
The beneficial effects of the invention are as follows: the two valve balls are of a structure which is vertically and symmetrically distributed, the valve body can be designed into a structure which is spliced left and right, only one sealing surface for installing the valve balls can be arranged between the left valve body and the right valve body, and the coaxiality of the hole for installing the valve rod is good. Under operating condition, two valve balls can be connected through the clutch, realize rotating simultaneously, improved valve sealing performance and flow control precision, two valve balls can separate and independently rotate moreover, leak when one valve ball seals, and another valve ball still can play the sealed effect of closing, has guaranteed piping system's security.
Drawings
Fig. 1 is a schematic structural view of embodiment 1;
FIG. 2 is a cross-sectional view at A-A in FIG. 1;
fig. 3 is a schematic structural view of embodiment 2;
FIG. 4 is a cross-sectional view at B-B in FIG. 1;
reference numerals illustrate: 1. valve body, 2, valve rod, 3, valve ball, 4, left mouth of pipe, 5, right mouth of pipe, 6, horizontal valve opening, 7, vertical valve opening, 8, bypass valve, 9, upper bevel gear, 10, lower bevel gear, 11, bridging bevel gear, 12, clutch screw, 13, centre bore, 14, hand wheel, 15, tee bend isolation tube, 16, lubrication chamber, 17, guide arm, 18, guide hole, 19, auxiliary port, 20, sealed lid, 21, filter screen.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
referring to fig. 1: the double-ball sealing ball valve comprises a valve body 1, valve rods 2 and valve balls 3, wherein a left pipe orifice 4 and a right pipe orifice 5 are respectively arranged at two ends of the valve body 1, two valve balls 3 are connected between the left pipe orifice 4 and the right pipe orifice 5 in a rotating and sealing mode, the valve body 1 is connected with the two valve rods 2 in a rotating and sealing mode, the inner ends of the two valve rods 2 are respectively fixedly connected with the two valve balls 3, the two valve balls 3 are symmetrically arranged up and down, a transverse valve hole 6 communicated with the left pipe orifice 4 or the right pipe orifice 5 is arranged on the valve balls 3, a vertical valve hole 7 communicated with each other up and down is arranged on the transverse valve hole 6, a bypass valve 8 and a clutch are arranged between the two valve balls 3 on the side wall of the valve body 1, and the clutch is used for controlling the two valve balls 3 to be combined to rotate simultaneously for opening and closing, or controlling the two valve balls 3 to be separated for realizing independent opening and closing of the two valve balls.
Working principle: the left pipe orifice 4 and the right pipe orifice 5 are connected with the pipeline through flange bolts, so that the ball valve is fixed on the pipeline. When the clutch controls the combination of the two valve balls 3, any one of the two valve rods 2 can be rotated to drive the two valve balls 3 to rotate simultaneously, so that the simultaneous opening, the simultaneous closing and the same opening degree are realized, and the accurate flow regulating function is realized. When the two valve balls 3 are opened, fluid medium can flow in from one end of the left pipe orifice 4 and the right pipe orifice 5, flow through the transverse valve hole 6 and the vertical valve hole 7 of the two valve balls 3, and then flow out from the other pipe orifice. When the clutch controls the separation of the two valve balls 3, the two valve rods 2 can be rotated to drive the two valve balls 3 to rotate independently, when maintenance is needed, one valve ball 3 can be closed, the other valve ball 3 and the bypass valve 8 are opened, fluid in a pipeline is discharged from the bypass valve 8, and maintenance is performed after the fluid is discharged completely. The bypass valve 8 is communicated with the channel between the two valve balls 3, so that the functions of channel pollution discharge, pressure relief, auxiliary bypass and the like are safely realized.
As shown in fig. 2, the clutch comprises an upper bevel gear 9, a lower bevel gear 10, a bridging bevel gear 11 and a clutch screw 12, wherein the upper bevel gear 9 and the lower bevel gear 10 are fixedly connected with two valve balls 3 respectively, central holes 13 communicated with the vertical valve holes 7 are formed in the upper bevel gear 9 and the lower bevel gear 10, the clutch screw 12 is in threaded connection with the valve body 1, a hand wheel 14 is fixedly arranged at the outer end of the clutch screw 12, the bridging bevel gear 11 is rotatably arranged at the inner end of the clutch screw 12, and the upper side and the lower side of the bridging bevel gear 11 are respectively in meshed connection with the upper bevel gear 9 and the lower bevel gear 10.
Through the clutch structure, when the hand wheel 14 is rotated to screw the clutch screw 12 into the valve body for a certain distance, the clutch screw 12 moves the bridging bevel gear 11 between the upper bevel gear 9 and the lower bevel gear 10, so that the transmission connection of the two upper bevel gears 9 and the lower bevel gear 10 is realized, and when any one of the two valve balls 3 rotates, the other valve ball can be driven to rotate simultaneously through the bevel gear transmission mechanism. When the hand wheel 14 is rotated to screw the clutch screw 12 out of the valve body for a certain distance, the clutch screw 12 will bridge the bevel gear 11 and move away between the upper bevel gear 9 and the lower bevel gear 10, so that the upper bevel gear 9 and the lower bevel gear 10 are separated from each other, and the two valve balls 3 can rotate independently.
A three-way isolation pipe 15 is arranged between the two valve balls 3, the upper end and the lower end of the three-way isolation pipe 15 are respectively connected with the two central holes 13 in a rotating way, the middle part of the three-way isolation pipe 15 is fixedly connected with the bypass valve 8, and a lubrication cavity 16 for storing lubricating oil is arranged between the three-way isolation pipe 15 and the valve body 1.
The main function of the three-way isolating pipe 15 is to isolate fluid medium in the valve from the clutch, prolong the service life of the clutch gear, in addition, the three-way isolating pipe 15 can improve the sealing performance between the bypass valve 8 and the valve body 1, avoid leakage at the bypass valve, and ensure that the upper bevel gear 9 and the lower bevel gear 10 rotate more stably and are not easy to twist and deform.
On the one hand, the lubricating oil in the lubricating cavity 16 can lubricate the bevel gear transmission of the clutch, so that the abrasion of the gears is reduced, and the service life of the clutch is prolonged. On the other hand, the lubricating oil in the lubricating cavity 16 can permeate the sealing surface of the valve ball 3 below under the action of gravity, so that the valve ball can rotate more smoothly, the service life of the valve ball is prolonged, and the valve ball 3 below can be connected into fluid at the high pressure side during use.
The side wall of the three-way isolation pipe 15 is fixedly provided with a guide rod 17, the inner end surface of the clutch screw 12 is provided with a guide hole 18, and the guide hole 18 is in sliding connection with the guide rod 17. On the one hand, the sliding fit of the guide hole 18 and the guide rod 17 can enable the clutch screw rod 12 to move axially more stably, the clutch screw rod 12 is not easy to vibrate and break when the clutch is combined, the clutch is smoother, and the clamping teeth are not easy to cause. On the other hand, the circumferential limit of the three-way isolation pipe 15 can be realized, the damage to the connection between the three-way isolation pipe 15 and the bypass valve 8 is avoided, and the problem of mutual influence caused when the upper bevel gear 9 and the lower bevel gear 10 independently rotate is avoided.
In embodiment 2, as shown in fig. 3-4, in order to implement the large flow regulating function of the valve body, a secondary port 19 is respectively disposed in the left nozzle 4 and the right nozzle 5, and the two secondary ports 19 are respectively communicated with the transverse valve holes 6 of the two valve balls 3. The auxiliary port 19 is used for realizing the function of parallel connection of the two valve balls 3, and the original valve has a single serial mode of one-to-one (flowing in from one valve ball and flowing out from the other valve ball), so that the use mode of two-to-two (flowing in from the two valve balls and flowing out from the other two valve balls) can be increased. The auxiliary port 19 is provided with a sealing cover 20.
The sealing cover 20 is used for sealing the auxiliary port 19, and can be detached as required during installation, and the auxiliary port 19 is opened for use, so that the use modes of two-to-one and one-to-two are further increased. The filter screen 21 is fixedly arranged at one end of the transverse valve hole 6, the filter screen is not arranged at the other end of the transverse valve hole 6, the end can be rotated to the other side of the auxiliary port when the filter screen 21 is used, fluid medium flows through the filter screen to filter impurities, and the filter screen can be cleaned and replaced through the auxiliary port 19 when overhauled.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the invention.

Claims (7)

1. The utility model provides a two ball seal ball valves, includes valve body (1), valve rod (2) and valve ball (3), and the both ends of valve body (1) are equipped with left mouth of pipe (4) and right mouth of pipe (5) respectively, rotate between left mouth of pipe (4) and right mouth of pipe (5) and seal and be connected with two valve balls (3), rotate two valve rods (2) of sealing connection on valve body (1), the inner of two valve rods (2) respectively with two valve balls (3) fixed connection, its characterized in that: two valve balls (3) are arranged symmetrically up and down, a transverse valve hole (6) communicated with a left pipe orifice (4) or a right pipe orifice (5) is formed in the valve balls (3), a vertical valve hole (7) used for being communicated with each other up and down is formed in the transverse valve hole (6), a bypass valve (8) and a clutch are arranged between the two valve balls (3) on the side wall of the valve body (1), and the clutch is used for controlling the two valve balls (3) to rotate simultaneously to open and close or controlling the two valve balls (3) to separate to rotate independently to open and close.
2. The dual ball seal ball valve of claim 1, wherein: the clutch comprises an upper bevel gear (9), a lower bevel gear (10), a bridging bevel gear (11) and a clutch screw (12), wherein the upper bevel gear (9) and the lower bevel gear (10) are fixedly connected with two valve balls (3) respectively, central holes (13) communicated with vertical valve holes (7) are formed in the upper bevel gear (9) and the lower bevel gear (10), the clutch screw (12) is in threaded connection with a valve body (1), a hand wheel (14) is fixedly arranged at the outer end of the clutch screw (12), the bridging bevel gear (11) is rotatably arranged at the inner end of the clutch screw (12), and the upper side and the lower side of the bridging bevel gear (11) are respectively in meshed connection with the upper bevel gear (9) and the lower bevel gear (10).
3. The dual ball seal ball valve of claim 2 wherein: be equipped with tee bend isolation tube (15) between two valve ball (3), the upper and lower both ends of tee bend isolation tube (15) are connected with two centre bore (13) rotations respectively, and the middle part and the bypass valve (8) fixed connection of tee bend isolation tube (15), be equipped with between tee bend isolation tube (15) and valve body (1) and be used for depositing lubrication chamber (16) of lubricating oil.
4. A double-ball sealed ball valve according to claim 3, wherein: the side wall of the three-way isolation pipe (15) is fixedly provided with a guide rod (17), the inner end surface of the clutch screw (12) is provided with a guide hole (18), and the guide hole (18) is in sliding connection with the guide rod (17).
5. The dual ball seal ball valve of claim 1, wherein: the left pipe orifice (4) and the right pipe orifice (5) are respectively provided with an auxiliary orifice (19), and the two auxiliary orifices (19) are respectively communicated with the transverse valve holes (6) of the two valve balls (3).
6. The double-ball sealed ball valve according to claim 5, wherein: the auxiliary port (19) is provided with a sealing cover (20).
7. The dual ball seal ball valve of claim 1, wherein: one end of the transverse valve hole (6) is fixedly provided with a filter screen (21).
CN202311550562.9A 2023-11-17 2023-11-17 Double-ball sealing ball valve Pending CN117588577A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311550562.9A CN117588577A (en) 2023-11-17 2023-11-17 Double-ball sealing ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311550562.9A CN117588577A (en) 2023-11-17 2023-11-17 Double-ball sealing ball valve

Publications (1)

Publication Number Publication Date
CN117588577A true CN117588577A (en) 2024-02-23

Family

ID=89910858

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311550562.9A Pending CN117588577A (en) 2023-11-17 2023-11-17 Double-ball sealing ball valve

Country Status (1)

Country Link
CN (1) CN117588577A (en)

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