CN116255491A

CN116255491A - Leakage-proof valve

Info

Publication number: CN116255491A
Application number: CN202310022297.0A
Authority: CN
Inventors: 高子钰; 吴晗; 韩欣霖; 曹兴涛; 郭琰林; 韩雪峰; 臧红薇; 臧红岩; 李小明; 高超
Original assignee: Jiangsu Jiangyuan Machinery Co ltd
Current assignee: Jiangsu Jiangyuan Machinery Co ltd
Priority date: 2023-01-07
Filing date: 2023-01-07
Publication date: 2023-06-13
Anticipated expiration: 2043-01-07
Also published as: CN116255491B

Abstract

The invention relates to the field of valves, in particular to a leakage-proof valve, which comprises a shell pipe, two taper plugs and a valve body, wherein two ends of the shell pipe are connected with connecting pipes, the inner diameter of the connecting pipe is smaller than that of the shell pipe, the two taper plugs are symmetrically arranged in the shell pipe and are respectively used for plugging the two connecting pipes; connecting rings are fixed at two ends of the shell pipe, flange plates I are fixed at the inner ends of the two connecting pipes, and the two flange plates I are respectively fixed on the two connecting rings; an inner pipe is fixed in the shell pipe, end plates are fixed at two ends of the inner pipe, a bidirectional threaded pipe is rotated between the two end plates, two screw rods I are respectively connected with two ends of the bidirectional threaded pipe in a threaded manner, the two screw rods I are respectively and fixedly connected with two taper plugs, an installation pipe I is fixed in the middle between the inner pipe and the shell pipe, a control shaft is rotated in the installation pipe I and is in meshed transmission connection with the bidirectional threaded pipe, and an adjusting disc is fixed at the outer end of the control shaft; the invention can avoid the leakage between the shell and the control rod.

Description

Leakage-proof valve

Technical Field

The invention relates to the field of valves, in particular to a leakage-proof valve.

Background

The valve is a mechanical device for controlling the flow rate, flow direction, pressure, temperature and the like of flowing fluid medium, is a basic component in a pipeline system, is also an important fluid control device in industry, relates to a plurality of departments of national economy, and is an important basic device for the development of the national economy. Valve leakage refers to: the medium leaks from inside the valve to outside the valve. In some particular areas, such as: the leakage of chemical plants and nuclear power plants can cause material loss, environmental pollution and accidents in severe cases. For flammable, explosive, toxic or radioactive media, leakage is not allowed, and thus the valve must have reliable sealing properties. The valve can be operated manually or by a hand wheel, a handle or a pedal, and the pressure, the temperature and the flow rate of the fluid medium can be changed by control.

Leakage of the valve generally occurs at the junction between the housing and the control rod, so avoiding leakage between the housing and the control rod is an urgent problem to be solved to avoid leakage of the valve.

Disclosure of Invention

The invention aims to provide a leakage-proof valve, which can avoid leakage between a shell and a control rod.

The aim of the invention is achieved by the following technical scheme:

the utility model provides a leak protection valve, includes the shell pipe that both ends all are connected with the connecting pipe, and the internal diameter of connecting pipe is less than the internal diameter of shell pipe to and two taper plugs of symmetry setting in the shell pipe, two taper plugs are used for shutoff two connecting pipes respectively.

The shell pipe is characterized in that connecting rings are fixed at two ends of the shell pipe, flange plates I are fixed at the inner ends of the two connecting pipes, and the two flange plates I are fixed on the two connecting rings respectively.

The shell tube internal fixation has the inner tube, the both ends of inner tube all are fixed with the end board, it has two-way screwed pipe to rotate between two end boards, two threaded connection has two screw rods I respectively at two ends of two-way screwed pipe, two screw rods I respectively with two taper plug fixed connection, all be fixed with the gag lever post on two taper plugs, gag lever post and the end board sliding connection of corresponding side, the middle part between inner tube and the shell tube is fixed with installation pipe I, the I internal rotation of installation pipe has the control axle, control axle and two-way screwed pipe meshing transmission connection, the outer end of control axle is fixed with the regulating disk.

Grooves are formed in the outer sides of the two end plates, baffle rings are fixed at the two ends of the two-way threaded pipe, and the two baffle rings rotate in the two grooves respectively.

Drawings

FIGS. 1 and 2 are schematic views of the overall structure of a leak-proof valve;

FIG. 3 is a schematic cross-sectional view of a leak-proof valve;

FIG. 4 is a schematic structural view of the housing tube;

FIG. 5 is a schematic cross-sectional view of FIG. 4;

FIG. 6 is a schematic view of a two-way threaded pipe;

FIG. 7 is a schematic view of the structure of the cone plug;

FIG. 8 is a schematic view of the structure of the drain tube;

FIG. 9 is a schematic structural view of a control ring;

fig. 10 is a schematic structural view of the connection pipe;

fig. 11 is a schematic structural view of the extension tube.

In the figure:

a housing tube 101; a connection ring 102; an inner tube 103; a header plate 104; mounting a tube I105; a groove 106; a countersink 107; a fixing lever 108; mounting a pipe II 109;

a bidirectional threaded pipe 201; a baffle ring 202; a control shaft 203; a dial 204;

a taper plug 301; a stop lever 302; screw I303;

a drain tube 401; an opening 402; a drain hole 403; an external connection plate 404; a spring 405;

a control loop 501; a supporting angle plate 502; a pressing plate 503;

flange plate I601; a connecting tube 602; a seal ring groove 603; screw II 604;

an extension tube 701; flange ii 702; adjusting the nut 703.

Detailed Description

As shown in fig. 1-11:

the utility model provides a leak protection valve, includes shell pipe 101, taper plug 301 and connecting pipe 602, and shell pipe 101's both ends all are connected with connecting pipe 602, and the internal diameter of connecting pipe 602 is less than shell pipe 101's internal diameter, and two taper plugs 301 symmetry set up in shell pipe 101, and two taper plugs 301 are used for shutoff two connecting pipes 602 respectively.

When the pipeline is in use, the two connecting pipes 602 are used for being connected with an external pipeline, so that a valve is connected to the pipeline to be controlled, when the pipeline is required to be connected, the two conical plugs 301 are far away from the two connecting pipes 602, liquid in the pipeline enters the shell pipe 101 from one connecting pipe 602, and the liquid enters the other connecting pipe 602 from the shell pipe 101, so that the circulation of the liquid is ensured; when the pipeline needs to be closed, the two taper plugs 301 are respectively propped against the inner ends of the two connecting pipes 602 to finish closing the valve, so that the purpose of plugging the pipeline is achieved;

moreover, when the pipeline is plugged, the two taper plugs 301 respectively plug the two connecting pipes 602, so that liquid cannot enter the shell pipe 101, and leakage of the shell pipe 101 serving as a valve shell is effectively avoided.

As shown in fig. 1-11:

two connecting rings 102 are respectively fixed at two ends of the shell tube 101, two flange plates I601 are respectively fixed at the inner ends of two connecting tubes 602, and two flange plates I601 are respectively installed and fixed on the two connecting rings 102.

The flange plate I601 and the connecting ring 102 are arranged, so that the shell pipe 101 and the connecting pipe 602 of the valve can be detachably connected through bolts, and when the valve is plugged, the joint of the flange plate I601 and the connecting ring 102 is also protected by the isolation of the two conical plugs 301, so that the leakage of the valve is also avoided;

when the flange plate I601 is connected with the connecting ring 102, a sealing gasket is arranged between the flange plate I601 and the connecting ring 102, so that leakage of the flange plate I601 and the connecting ring 102 is avoided.

As shown in fig. 1-11:

the inner tube 103 is fixed in the shell tube 101, two end plates 104 are respectively fixed at two ends of the inner tube 103, a bidirectional threaded tube 201 rotates between the two end plates 104, two screw rods I303 are respectively connected at two ends of the bidirectional threaded tube 201 in a threaded mode, two taper plugs 301 are respectively fixed at the outer ends of the two screw rods I303, limiting rods 302 are respectively fixed on the two taper plugs 301, the limiting rods 302 are in sliding connection with the end plates 104 on the corresponding sides, an installation tube I105 is fixed in the middle of the inner tube 103 and the shell tube 101, a control shaft 203 rotates in the installation tube I105, the control shaft 203 is in meshed transmission connection with the bidirectional threaded tube 201, and an adjusting disc 204 is fixed at the outer end of the control shaft 203.

By rotating the adjusting disc 204, the adjusting disc 204 drives the control shaft 203 to rotate, a bevel gear at the inner end of the control shaft 203 drives a bevel gear on the bidirectional threaded pipe 201 to rotate in the inner pipe 103, so that two screws I303 are simultaneously driven by threads, the two screws I303 are simultaneously moved close to or away from each other, and the two taper plugs 301 are driven to simultaneously move close to or away from each other; thereby achieving the control of controlling the two taper plugs 301 to plug or open the two connecting pipes 602;

wherein, the limit rod 302 is slidably connected with the end plate 104 on the corresponding side, so as to limit the sliding connection between the limit rod 302 and the end plate 104 on the corresponding side, thereby avoiding that the screw rod I303 synchronously rotates along with the bidirectional threaded pipe 201 when the bidirectional threaded pipe 201 rotates, and affecting the control of the movement of the taper plug 301;

when the valve is opened, the two conical plugs 301 are attached to the two end plates 104, so that when liquid circulates, the conical surfaces of the conical plugs 301 guide the liquid, so that the liquid can quickly flow between the shell pipe 101 and the inner pipe 103 and flow to the connecting pipe 602 at the other end through the space between the shell pipe 101 and the inner pipe 103.

As shown in fig. 1-11:

the two grooves 106 are respectively arranged on the outer sides of the two end plates 104, the two baffle rings 202 are respectively fixed on the two ends of the two-way threaded pipe 201, and the two baffle rings 202 are respectively rotated in the two grooves 106.

By the arrangement of the baffle ring 202 and the groove 106, the baffle ring 202 and the end plate 104 form a seal, and meanwhile, a sealing ring is arranged between the baffle ring 202 and the groove 106, so that the seal between the baffle ring 202 and the end plate 104 is further ensured;

moreover, by sealing the baffle ring 202 and the end plate 104, liquid is prevented from flowing into the inner pipe 103, and meanwhile, the leakage of the liquid at the control shaft 203 is further prevented by matching with the arrangement of the mounting pipe I105;

meanwhile, through the bi-directional threaded pipe 201 penetrating the inner pipe 103, even if liquid flow occurs between the bi-directional threaded pipe 201 and the screw rod I303, the liquid can flow from one end of the bi-directional threaded pipe 201 to the other end of the bi-directional threaded pipe 201, the liquid still remains in the outer shell pipe 101 and cannot enter the inner pipe 103, and leakage of the valve is further avoided.

Further:

the inner end of the connecting pipe 602 is provided with a chamfer.

The end of the connecting pipe 602 is tightly propped against the conical plug 301 for plugging, and the joint area of the conical surface of the conical plug 301 and the connecting pipe 602 is increased through chamfering, so that the plugging effect is ensured.

As shown in fig. 1-11:

countersunk groove 107 sets up inner tube 103 keeps away from installation pipe I105 side, installation pipe II 109 is fixed on shell pipe 101, and correspond with countersunk groove 107, drain pipe 401 slides in installation pipe II 109, opening 402 sets up the inner of drain pipe 401, drain hole 403 sets up the outer end at drain pipe 401, outer fishplate bar 404 is fixed the outer end at drain pipe 401, two dead levers 108 run through respectively and slide the both ends at external limiting plate 404, two dead levers 108 are all fixed on shell pipe 101, two springs 405 set up respectively on two dead levers 108, two springs 405 all jack up outer fishplate bar 404, make opening 402 insert in countersunk groove 107.

When the valve is normally used, the elastic force of the spring 405 pushes the outer connecting plate 404, so that the outer connecting plate 404 drives the drain pipe 401 to move towards the countersink 107, the opening 402 is ensured to be inserted into the countersink 107, the plugging of the countersink 107 to the opening 402 is formed, the liquid in the shell pipe 101 is prevented from flowing into the drain pipe 401 from the opening 402, meanwhile, the drain hole 403 is positioned in the mounting pipe II 109, the drain hole 403 is further formed to be plugged by the mounting pipe II 109, and the leakage of the mounting pipe II 109 is effectively avoided;

when the valve is plugged, after the two taper plugs 301 are respectively abutted against the two connecting pipes 602, part of liquid is stored in the shell pipe 101, as the valve is installed, the adjusting disc 204 is ensured to be positioned above, so that the valve is conveniently adjusted by the adjusting disc 204, the drain pipe 401 is positioned at the lower end of the shell pipe 101, the outer connecting plate 404 is pressed downwards at the moment, the outer connecting plate 404 drives the drain pipe 401 to move downwards, the opening 402 slides out of the countersunk groove 107, the drain hole 403 slides out of the installation pipe II 109, the liquid in the shell pipe 101 flows into the drain pipe 401 through the opening 402, then flows out through the drain hole 403, the retained liquid in the shell pipe 101 is discharged, after the retained liquid in the shell pipe 101 is completely discharged, whether the state of the connecting pipe 602 is plugged by the drain hole 403 is again or not can be judged, when the drain hole 403 is opened again for a period of time, the taper plug 301 is good in plugging, and the valve is required to be maintained or replaced; after a certain period of time, the drain hole 403 is opened again and no liquid flows out, indicating that the valve is still in a better blocking state.

As shown in fig. 1-11:

two control rings 501 are all rotated on the shell pipe 101, and the lower extreme of two control rings 501 all is fixed with a gusset plate 502, and two gusset plates 502 all jack up external connection board 404, and both sides between two control rings 501 all are fixed with clamp plate 503.

By pressing down the pressing plate 503, the two control rings 501 rotate on the housing tube 101, and then drive the two support angle plates 502 to rotate on the housing tube 101, so that the right angles of the two support angle plates 502 push down the outer connecting plate 404, thereby forming the descent of the outer connecting plate 404, and the drain hole 403 is opened;

by providing two pressure plates 503, the drain holes 403 can be controlled by the pressure plates 503 on both sides of the valve.

As shown in fig. 1-11:

the extension pipe 701 slides on the connection pipe 602, and the flange plate ii 702 is fixed to the outer end of the extension pipe 701.

Through the setting of extension pipe 701, when the installation valve, can be connected through ring flange II 702 and connecting tube, moreover, through the slip of extension pipe 701 on connecting tube 602, make the interval of two ring flanges II 702 can be adjusted, make the valve can adapt to the connection of the pipeline mouth of different intervals then.

Further:

a plurality of seal ring grooves 603 are arranged on the outer side of the outer end of the connecting pipe 602.

By arranging the seal ring grooves 603, the seal rings are arranged in the plurality of seal ring grooves 603, so that a plurality of seal rings exist at the joint between the connecting pipe 602 and the extension pipe 701, the connecting pipe 602 and the extension pipe 701 can be better sealed, and leakage between the connecting pipe 602 and the extension pipe 701 is avoided.

Further:

the adjusting nut 703 rotates on the extension pipe 701, the screw rod II 604 is in threaded connection with the adjusting nut 703, and the screw rod II 604 is fixed on the flange plate I601 on the corresponding side.

Through rotating adjusting nut 703, make adjusting nut 703 remove on screw rod II 604 through the screw thread, drive extension pipe 701 and remove on connecting pipe 602 then, form the regulation to connecting pipe 602 and extension pipe 701 relative position to form the controllable regulation to the interval of two ring flanges II 702, moreover, can adjust the position of two ring flanges II 702 respectively.

Claims

1. A leak-proof valve, characterized in that: the device comprises a shell pipe (101) with two ends connected with connecting pipes (602), wherein the inner diameter of the connecting pipe (602) is smaller than that of the shell pipe (101), and two taper plugs (301) are symmetrically arranged in the shell pipe (101), and the two taper plugs (301) are respectively used for plugging the two connecting pipes (602).

2. A leak-proof valve as defined in claim 1, wherein: connecting rings (102) are fixed at two ends of the shell pipe (101), flange plates I (601) are fixed at inner ends of the two connecting pipes (602), and the two flange plates I (601) are respectively fixed on the two connecting rings (102).

3. A leak-proof valve as defined in claim 1, wherein: the shell pipe (101) internal fixation has inner tube (103), the both ends of inner tube (103) all are fixed with end plate (104), it has two-way screwed pipe (201) to rotate between two end plates (104), two screw rods I (303) are threaded respectively at the both ends of two-way screwed pipe (201), two screw rods I (303) respectively with two taper plugs (301) fixed connection, all be fixed with gag lever post (302) on two taper plugs (301), gag lever post (302) and end plate (104) sliding connection of corresponding side, middle part between inner tube (103) and shell pipe (101) is fixed with installation tube I (105), it has control axle (203) to install the intraductal rotation of tube I (105), control axle (203) and two-way screwed pipe (201) meshing transmission are connected, the outer end of control axle (203) is fixed with regulating disk (204).

4. A leak-proof valve as defined in claim 3, wherein: grooves (106) are respectively fixed on the outer sides of the two end plates (104), baffle rings (202) are respectively fixed on the two ends of the two-way threaded pipe (201), and the two baffle rings (202) rotate in the two grooves (106) respectively.

5. A leak-proof valve as defined in claim 3, wherein: the inner end of the connecting pipe (602) is provided with a chamfer.

6. A leak-proof valve as defined in claim 3, wherein: the inner tube (103) is kept away from installation pipe I (105) side and is equipped with countersunk head groove (107), countersunk head groove (107) correspond shell pipe (101) and are fixed with installation pipe II (109), install and slide in pipe II (109) and have drain pipe (401), the inner of drain pipe (401) is equipped with opening (402), the outer end of drain pipe (401) is equipped with drain hole (403), the outer end of drain pipe (401) is fixed with external board (404), the both ends of external board (404) all run through and slide have dead lever (108), two dead levers (108) are all fixed on shell pipe (101), all be equipped with spring (405) on two dead levers (108), two spring (405) all jack up external board (404), make in opening (402) insert countersunk head groove (107).

7. A leak-proof valve as defined in claim 6, wherein: the shell tube (101) is rotatably provided with two control rings (501), the lower ends of the two control rings (501) are respectively fixed with a supporting angle plate (502), the two supporting angle plates (502) are respectively propped against the outer connecting plate (404), and pressing plates (503) are respectively fixed on two sides between the two control rings (501).

8. A leak-proof valve as defined in claim 2, wherein: an extension tube (701) is arranged on the connecting tube (602) in a sliding mode, and a flange plate II (702) is fixed at the outer end of the extension tube (701).

9. A leak-proof valve as defined in claim 8, wherein: and a plurality of sealing ring grooves (603) are formed in the outer side of the outer end of the connecting pipe (602).

10. A leak-proof valve as defined in claim 8, wherein: an adjusting nut (703) is rotated on the extension pipe (701), a screw rod II (604) is connected with the adjusting nut (703) in an internal thread mode, and the screw rod II (604) is fixed on a flange plate I (601) on the corresponding side.