CN218267329U

CN218267329U - Gas valve

Info

Publication number: CN218267329U
Application number: CN202221917630.1U
Authority: CN
Inventors: 方雪超
Original assignee: Yuhuan Jietai Valve Co ltd
Current assignee: Yuhuan Jietai Valve Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2023-01-10
Anticipated expiration: 2032-07-22

Abstract

The utility model belongs to the technical field of, concretely relates to gas valve, include: the valve body is internally provided with a flow passage; the valve core is arranged on the valve body, the front end of the valve core is arranged in the flow channel, and the valve core is used for opening or closing the flow channel; the hand wheel is arranged at the rear end of the valve core and is used for controlling the rotation of the valve core on the valve body; the side wall of the valve body is provided with a first boss for inserting a hand wheel, and the outer side wall of the first boss extends outwards to form a convex edge; the lower end of the hand wheel is formed with a clamping edge extending towards the center; the hand wheel rotates for a set angle, so that when the valve core is in an open state, the end face of the clamping edge is movably abutted against the end face of the convex edge. The utility model discloses a have the chimb at the lower extreme shaping of hand wheel to the card limit that the center extends, the outside shaping that extends of lateral wall of boss one, when the gas valve is in the state of opening, the terminal surface activity butt of chimb is at the terminal surface on card limit, and the hand wheel can't break away from the valve body, guarantees the security of using.

Description

Gas valve

Technical Field

The utility model relates to a gas valve technical field refers in particular to a gas valve.

Background

The Chinese patent CN2550589Y discloses a gas ball valve suitable for a gas appliance, which comprises a valve shell, a ball body, a sealing ring, a top tightening nut, a valve rod, a sealing ring, a top tightening screw and a knob.

The gas valve knob produced by adopting the mode is connected with the valve rod through the screw, but after the knob is used for a long time, the screw is easy to break away from the valve rod, the knob can break away from the valve rod, once danger occurs and the gas valve needs to be closed immediately, the knob breaks away from the valve rod and cannot be closed in time, and a large amount of gas is leaked to cause harm.

Disclosure of Invention

The utility model aims at providing a gas valve, through the card limit that has the central extension of lower extreme shaping at the hand wheel, the outside shaping that extends of lateral wall of boss one has the chimb, and when the gas valve was in the state of opening, the terminal surface activity butt of chimb was at the terminal surface on card limit, and when solving the gas valve and being in the state of opening, the hand wheel broke away from the problem of valve body.

The purpose of the utility model is realized like this:

a gas valve comprising:

the valve body is internally provided with a flow passage;

the valve core is arranged on the valve body, the front end of the valve core is arranged in the flow channel, and the valve core is used for opening or closing the flow channel;

the hand wheel is arranged at the rear end of the valve core and is used for controlling the rotation of the valve core on the valve body;

the side wall of the valve body is provided with a first boss for inserting a hand wheel, and the outer side wall of the first boss extends outwards to form a convex edge;

the lower end of the hand wheel is formed with a clamping edge extending towards the center;

the hand wheel rotates for a set angle, so that when the valve core is in an open state, the end face of the clamping edge is movably abutted against the end face of the convex edge.

Preferably, the lower end surface of the hand wheel is inwards recessed with an accommodating groove, the inner side wall of the accommodating groove is symmetrically provided with the clamping edges extending towards the center, and a limiting area for limiting the convex edge to be separated from the accommodating groove is formed between the end surface of the clamping edge and the accommodating groove; an opening for the convex edge to enter the accommodating groove is formed between the clamping edges;

after the boss enters the accommodating groove through the opening, the hand wheel rotates for a set angle, so that the convex edge enters the limiting area.

Preferably, the clamping edge is provided with a first limiting part, and the side wall of the first boss is provided with a second limiting part;

when the first limiting part is abutted against the second limiting part, the hand wheel cannot rotate continuously, and the valve core is in a fully opened state.

Preferably, the method further comprises the following steps:

the self-closing device is arranged at the air inlet end of the flow passage;

wherein the self-closing device comprises at least:

a valve stem support mounted within the flow passage; is fixed in the valve body;

the self-closing valve core is movably arranged on the valve rod bracket;

the self-closing spring is arranged on the self-closing valve core, and the end parts of the self-closing spring are respectively abutted against the valve rod bracket and the tail end of the self-closing valve core;

when the first thrust of the gas in the flow channel to the self-closing valve core is greater than the second thrust of the self-closing spring to the self-closing valve core, the self-closing valve core blocks the flow channel under the action of the first thrust to prevent the gas from continuously passing through the flow channel.

Preferably, the self-closing valve cartridge includes:

the tail end of the piston rod penetrates through the valve rod support, and the self-closing spring is installed on the piston rod;

a stopper portion formed at the distal end of the piston rod;

and the limiting block is abutted against the end face of the limiting block by the self-closing spring.

Under the action of the second thrust, the plugging part overcomes the elastic force of the self-closing spring, the inner wall of the sealing part in the flow channel is plugged, and the edge of the plugging part has the tendency of abutting against the inner wall of the sealing part.

Preferably, the blocking part is a bowl-shaped part bent towards the air inlet end of the flow passage.

Preferably, the valve cartridge comprises at least:

the valve ball is provided with a through hole, is rotatably arranged in a flow passage in the valve body and is used for communicating or plugging the flow passage;

and the valve rod is movably arranged in the boss I, the lower end of the valve rod is clamped with the valve ball, and the upper end of the valve rod is connected with the hand wheel.

Preferably, the end of the valve ball is provided with a groove, the lower end of the valve rod is formed with a second boss matched with the groove, the second boss is arranged in the groove, and the valve rod is rotated to enable the outer wall of the second boss to abut against the inner wall of the groove and be used for driving the valve ball to rotate.

Preferably, the upper end shaping of valve rod has boss three, opens the constant head tank with boss three-phase adaptation in the hand wheel, and boss three is installed in the constant head tank, drives the rotation of valve rod through the hand wheel.

Preferably, a limiting groove is formed in the valve flow passage, a limiting part III is formed in the middle of the valve rod in a protruding mode, and when the valve rod is arranged in the flow passage, the upper end face of the limiting part III abuts against the inner wall of the limiting groove and is used for limiting the valve rod to be separated from the flow passage.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. the utility model discloses a have the chimb at the lower extreme shaping of hand wheel to the card limit that the center extends, the outside shaping that extends of lateral wall of boss one, when the gas valve is in the state of opening, the terminal surface activity butt of chimb is at the terminal surface on card limit, and the hand wheel can't break away from the valve body, guarantees the security of using.

2. By installing the self-closing device in the valve body, when gas leaks, when the thrust I of the gas in the flow channel to the self-closing valve core is greater than the thrust II of the self-closing spring to the self-closing valve core, the self-closing valve core blocks the flow channel under the action of the thrust I, so that the gas is prevented from continuously leaking, and the use safety is ensured.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded view of the structure of the present invention.

Fig. 3 is a schematic view of an end face structure of the hand wheel of the present invention.

Fig. 4 is a schematic structural view of the first boss and the hand wheel of the present invention.

Fig. 5 is a schematic structural view of the fixing pad and the valve ball of the present invention.

Fig. 6 is one of the cross-sectional views of the present invention.

Fig. 7 is a second cross-sectional view of the present invention.

Figure 8 is the cross-sectional view of the utility model discloses open the gas valve.

Fig. 9 is a cross-sectional view of the present invention when gas leaks.

Fig. 10 is a schematic view of the valve body structure of the present invention.

Reference numerals are as follows: 100. a valve body; 101. a first boss; 102. a convex edge; 103. a flow channel; 104. mounting grooves; 105. a receiving hole; 106. a limiting groove; 107. fixing grooves; 108. a second through hole; 109. an air inlet end; 200. A valve core; 201. a fixing pad; 202. a valve ball; 203. a valve stem; 204. a hand wheel; 205. accommodating grooves; 207. Clamping edges; 208. a first limiting part; 209. rotating the inclined plane; 210. a rotating part; 211. a groove; 212. a second boss; 213. a third limiting part; 214. a boss III; 215. positioning a groove; 216. a fixing hole; 217. a first through hole; 218. a first elastic component; 219. a second limiting part; 220. a restricted area; 221. an opening; 300. a self-closing device; 301. a valve stem support; 302. a self-closing valve core; 303. a cavity; 304. a plugging section; 305. A piston rod; 306. a self-closing spring; 307. a limiting block; 308. and a third through hole.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, a gas valve includes: a valve body 100, a valve core 200, a hand wheel 204 and a self-closing device 300.

The valve cartridge 200 includes: a valve ball 202 and a valve stem 203.

Referring to fig. 3, 4 and 10, a flow channel 103 is arranged inside the valve body 100, a first boss 101 is formed on the side wall of the valve body 100, a valve ball 202 is rotatably installed in the flow channel 103, a valve rod 203 is rotatably installed on the first boss 101, the lower end of the valve rod is clamped with the valve ball 202, a hand wheel 204 is arranged outside the valve body 100 and connected with the upper end of the valve rod 203, and the hand wheel 204 is rotated to drive the valve ball 202 to rotate, so that the flow channel 103 is controlled.

The outer side wall of the first boss 101 extends outwards to form a convex edge 102, the lower end surface of the handwheel 204 is inwards recessed to form an accommodating groove 205 capable of accommodating the first boss 101, the inner side wall of the accommodating groove 205 is symmetrically provided with clamping edges 207 extending towards the center, and a limiting area 220 for limiting the convex edge 102 to be separated from the accommodating groove 205 is formed between the end surface of the clamping edge 207 and the accommodating groove 205; an opening 221 for allowing the flange 102 to enter the accommodating groove 205 is formed between the clamping edges 207, the size of the opening 221 is slightly larger than that of the first boss 101, so that the flange 102 can enter the accommodating groove 205 through the opening 221, the gas delivery amount can be controlled by rotating the angle of the hand wheel 204, the angle can be 0-90 degrees, the end face of the flange 102 is movably abutted against the end face of the clamping edge 207, and when the gas valve is in an open state, the hand wheel 204 is prevented from being separated from the valve body 100.

The utility model discloses a have chimb 102 at the shaping card limit 207 that extends to the center of the lower extreme of hand wheel 204, the outside shaping that extends of lateral wall of a boss 101, when the gas valve is in the state of opening, chimb 102's terminal surface activity butt is at the terminal surface of card limit 207, solves the problem that hand wheel 204 breaks away from valve body 100, guarantees the security of using.

The first limiting portion 208 is arranged on the clamping edge 207, the second limiting portion 219 is arranged on the side wall of the first boss 101, the first limiting portion 208 abuts against the second limiting portion 219 by rotating the hand wheel 204, the hand wheel 204 cannot continue to rotate at the moment, the valve core 200 is in a fully open state, and at the moment, the conveying amount of fuel gas is the largest.

Through the cooperation of the first limiting part 208 and the second limiting part 219, the accuracy of the rotation angle of the valve ball 202 can be ensured, and the use is more convenient.

Combine fig. 5 and fig. 6 to show, mounting groove 104 has been seted up to bilateral symmetry in runner 103 middle part, install fixed bolster 201 in the mounting groove 104, install valve ball 202 between two fixed bolsters 201, the terminal surface circumference of fixed bolster 201 towards valve ball 202 has seted up rotation inclined plane 209, the equal circumferential molding of terminal surface of valve ball 202 towards fixed bolster 201 has rotation portion 210, rotation portion 210 activity butt is on rotating inclined plane 209, fixed bolster 201 is used for sealing, can adopt the tetrafluoro pad.

The upper end face of the valve ball 202 is provided with a groove 211, the lower end face of the valve rod 203 is formed with a second elongated boss 212, the second boss 212 is arranged in the groove 211, when the valve rod 203 is rotated, the outer wall of the second boss 212 abuts against the inner wall of the groove 211, the valve ball 202 rotates along with the rotation of the valve rod 203, the larger the rotation angle is, and the larger the delivery volume of the fuel gas is.

The upper end surface of the first boss 101 is downwards recessed to form an accommodating hole 105, the valve rod 203 is partially arranged in the flow channel 103 through the accommodating hole 105, the inner wall of the valve body 100 is formed with a limiting groove 106, a limiting part III 213 is formed in the middle of the valve rod 203, when the valve rod 203 is installed in the accommodating hole 105, the upper end surface of the limiting part III 213 abuts against the inner wall of the limiting groove 106, the valve rod 203 is prevented from being separated from the flow channel 103, and therefore normal use of the gas valve is affected.

The upper end face of the valve rod 203 is formed with a third boss 214, a positioning groove 215 is formed in the bottom of a containing groove 205 of the hand wheel 204, the third boss 214 is installed in the positioning groove 215, a fixing hole 216 is formed in the downward depression of the upper end face of the third boss 214, threads are formed in the inner wall of the fixing hole 216, the positioning groove 215 upwards penetrates through the hand wheel 204 and is provided with a first through hole 217, one end of a locking piece penetrates through the first through hole 217 and is arranged in the fixing hole 216, the locking piece is screwed tightly to enable the valve rod 203 to be connected and fixed with the hand wheel 204, a first elastic component 218 is installed between the third boss 214 and the positioning groove 215, and the first elastic component 218 is sleeved on the locking piece.

Referring to fig. 7 and 8, when gas is not opened, the flange 102 is located outside the accommodating groove 205, the hand wheel 204 is pressed downward against the elastic force of the first elastic component 218, so that the flange 102 is placed in the accommodating groove 205, the hand wheel 204 is clamped with the upper end of the valve rod 203, then the hand wheel 204 is rotated, the end surface of the flange 102 is movably abutted against the end surface of the clamping edge 207, the outer wall of the third boss 214 is abutted against the inner wall of the positioning groove 215, the third boss 214 rotates along with the rotation of the positioning groove 215, that is, the valve rod 203 rotates along with the rotation of the hand wheel 204, so that the valve ball 202 is driven to rotate, and the gas is opened or closed.

The hand wheel 204 needs to be pressed to open the gas valve, so that children are prevented from opening the gas valve by mistake, and the use safety of the gas valve is improved.

A fixing groove 107 is formed in the valve body 100, a second through hole 108 is formed in the flow passage 103, and the self-closing device 300 is installed in the fixing groove 107.

As shown in fig. 2 and 7, the self-closing apparatus 300 includes: a stem support 301, a self-closing valve spool 302, and a self-closing spring 306.

The valve rod support 301 is fixed in the fixing groove 107, a cavity 303 is formed inside the valve rod support 301, an opening is formed in the end face of the valve rod support 301, and the self-closing valve core 302 moves in the cavity 303 through the opening.

The self-closing spool 302 includes: a blocking portion 304, a piston rod 305 and a stopper 307.

The rear end face of the valve rod support 301 is provided with a third through hole 308, the piston rod 305 penetrates through the third through hole 308, the front end of the piston rod 305 is formed with a blocking part 304, the blocking part 304 faces the air inlet end 109 of the flow channel 103 to form a bowl-shaped part, the rear end of the piston rod 305 is provided with a limiting block 307, a self-closing spring 306 is installed between the rear end face of the valve rod support 301 and the limiting block 307, and the rear end face of the valve rod support 301 is abutted to the self-closing spring 306.

As shown in fig. 9, when gas leaks, the first thrust of the gas in the flow passage 103 to the self-closing valve element 302 is greater than the second thrust of the self-closing spring 306 to the self-closing valve element 302, the self-closing spring 306 is compressed and deformed, the blocking portion 304 moves out of the cavity 303 and abuts against the inner wall of the second through hole 108 in the circumferential direction, and the gas cannot pass through the blocking portion 304, so that the gas is effectively prevented from diffusing into a room.

When gas does not leak, the gas needs to be reused, at the moment, the valve ball 202 rotates along with the hand wheel 204, the rotating part 210 firstly touches the end part of the piston rod 305 to push the piston rod 305 to move, so that the blocking part 304 is separated from the inner wall of the flow channel 103, and then is influenced by the elastic force of the self-closing spring 306, so that the blocking part 304 is separated from the third through hole 308 and returns to the cavity 303 again, at the moment, the flow channel 103 is restored to a conducting state, and the side wall valve can be further used continuously.

When gas leaks, the self-closing device 300 can be automatically closed, the gas cannot penetrate through the blocking part 304, the gas is effectively prevented from being diffused into a room, and when the gas does not leak, the self-closing device 300 is restored to the original state as long as the hand wheel 204 is rotated, and the side wall valve can be continuously used.

The foregoing shows and describes the basic principles and principal features of the invention, together with the advantages thereof. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A gas valve, comprising:

a valve body (100) in which a flow passage (103) is formed;

a valve core (200) which is installed on the valve body (100), the front end of which is arranged in the flow passage (103) and is used for opening or closing the flow passage (103);

a hand wheel (204) which is arranged at the rear end of the valve core (200) and is used for controlling the valve core (200) to rotate on the valve body (100);

the side wall of the valve body (100) is formed with a first boss (101) for inserting a hand wheel (204), and the outer side wall of the first boss (101) extends outwards to form a flange (102);

the lower end of the hand wheel (204) is formed with a clamping edge (207) extending towards the center;

the hand wheel (204) rotates by a set angle, so that when the valve core (200) is in an open state, the end surface of the clamping edge (207) is movably abutted against the end surface of the convex edge (102).

2. A gas valve as claimed in claim 1, wherein:

the lower end surface of the hand wheel (204) is inwards recessed with an accommodating groove (205), the inner side wall of the accommodating groove (205) is symmetrically provided with clamping edges (207) extending towards the center, and a limiting area (220) for limiting the convex edge (102) to be separated from the accommodating groove (205) is formed between the end surface of the clamping edge (207) and the accommodating groove (205); an opening (221) for the convex edge (102) to enter the accommodating groove (205) is formed between the clamping edges (207);

after the first boss (101) enters the accommodating groove (205) through the opening (221), the hand wheel (204) rotates for a set angle, so that the convex edge (102) enters the limiting area (220).

3. A gas valve as claimed in claim 2, wherein:

a first limiting part (208) is arranged on the clamping edge (207), and a second limiting part (219) is arranged on the side wall of the first boss (101);

when the first limiting part (208) abuts against the second limiting part (219), the hand wheel (204) cannot rotate continuously, and the valve core (200) is in a fully opened state.

4. A gas valve as claimed in any one of claims 1 to 3, wherein:

further comprising:

a self-closing device (300) which is installed at an air inlet end (109) of the flow passage (103);

wherein the self-closing device (300) comprises at least:

a valve stem holder (301) mounted in the flow passage (103); is fixed in the valve body (100);

the self-closing valve core (302) is movably arranged on the valve rod bracket (301);

the self-closing spring (306) is arranged on the self-closing valve core (302), and the end parts of the self-closing spring respectively abut against the tail ends of the valve rod bracket (301) and the self-closing valve core (302);

when the thrust I of the gas in the flow channel (103) to the self-closing valve core (302) is larger than the thrust II of the self-closing spring (306) to the self-closing valve core (302), the self-closing valve core (302) blocks the flow channel (103) under the action of the thrust I, and the gas is prevented from continuously passing through the flow channel (103).

5. A gas valve as claimed in claim 4, wherein:

the self-closing valve cartridge (302) comprises:

a piston rod (305) with the tail end passing through the valve rod bracket (301), and a self-closing spring (306) mounted on the piston rod (305);

a stopper (304) formed at the distal end of the piston rod (305);

a limiting block (307), wherein the self-closing spring (306) is abutted against the end face of the limiting block (307);

under the action of the second pushing force, the blocking part (304) overcomes the elastic force of the self-closing spring (306) to block the inner wall of the sealing part in the flow passage (103), and the edge of the blocking part (304) tends to abut against the inner wall of the sealing part.

6. A gas valve as claimed in claim 5, wherein:

the blocking portion (304) is a bowl-shaped member bent toward the air inlet end (109) of the flow path (103).

7. A gas valve as claimed in claim 1, wherein:

the valve cartridge (200) comprises at least:

the valve ball (202) is provided with a through hole, is rotatably arranged in the flow passage (103) in the valve body (100) and is used for communicating or blocking the flow passage (103);

and the valve rod (203) is movably arranged in the boss I (101), the lower end of the valve rod is clamped with the valve ball (202), and the upper end of the valve rod is connected with the hand wheel (204).

8. A gas valve as claimed in claim 7, wherein:

the end part of the valve ball (202) is provided with a groove (211), the lower end of the valve rod (203) is formed with a second boss (212) matched with the groove (211), the second boss (212) is arranged in the groove (211), and the valve rod (203) is rotated to enable the outer wall of the second boss (212) to abut against the inner wall of the groove (211) and be used for driving the valve ball (202) to rotate.

9. A gas valve as claimed in claim 7 or 8, wherein:

the upper end of the valve rod (203) is formed with a boss III (214), a positioning groove (215) matched with the boss III (214) is formed in the hand wheel (204), the boss III (214) is installed in the positioning groove (215), and the hand wheel (204) drives the valve rod (203) to rotate.

10. A gas valve as claimed in claim 7, wherein:

the limiting groove (106) is formed in the flow channel (103), the limiting part III (213) is formed in the middle of the valve rod (203) in a protruding mode, when the valve rod (203) is arranged in the flow channel (103), the upper end face of the limiting part III (213) abuts against the inner wall of the limiting groove (106) and is used for limiting the valve rod (203) to be separated from the flow channel (103).