CN213900019U

CN213900019U - Pipeline gas safety self-closing valve

Info

Publication number: CN213900019U
Application number: CN202023144726.2U
Authority: CN
Inventors: 王靖崇
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-08-06
Anticipated expiration: 2030-12-24

Abstract

The utility model relates to a pipeline gas equipment technical field specifically is a pipeline gas safety self-closing valve, including the valve body, be provided with the disk seat in the valve body, be equipped with the air cavity in the valve body, set up air inlet, gas outlet and the installing port that is linked together with the air cavity on the valve body, the installing port department of valve body is equipped with the valve gap through the screw rod lid, and the bottom of valve gap is equipped with the diaphragm that goes up and down and the position reciprocated along with the air pressure in the air cavity, and the diaphragm is sealed with the installing port, the lower extreme of diaphragm is installed and is used for opening the disk seat or close sealed seal structure when the diaphragm goes up and down, still install the ball valve that is used for the operator to operate the gas of opening and close on the valve body, and the ball valve is installed one section that is close to air inlet department at the valve body. This pipeline gas safety self-closing valve, self-closing valve are when not ventilating, and hard seal body and first sealing washer form soft or hard and seal with the disk seat, can be high temperature resistant, prevent fires, in case leak gas catches fire, can prolong rescue time.

Description

Pipeline gas safety self-closing valve

Technical Field

The utility model relates to a pipeline gas equipment technical field specifically is a pipeline gas safety self-closing valve.

Background

The gas is used as clean energy with low consumption, high benefit, low pollution and high benefit, and is widely applied to daily life and production of people, a gas pipeline is connected to a household by a pressure regulator to regulate medium-high pressure to low pressure, if the pressure regulator fails, safety accidents can be caused by too high or too low pressure directly entering the household, a rubber pipe or a corrugated pipe is used for connecting with a stove, a connecting pipe is dropped or broken to cause safety accidents, aiming at the potential safety hazard in the use process of the gas, a safety valve with the function of automatically cutting off the gas pipeline, namely a self-closing valve is generally required to be installed on a gas system pipeline, when the gas supply pressure of the pipeline is under-pressure, over-pressure and abnormal flow, the self-closing valve can be automatically closed to ensure the safe use of the gas without electricity or other external power, but the self-closing valve in the prior art has a complex internal structure, and the opening and closing of a valve core is mostly triggered by the structure of a pull rod, the control precision is low, the use in different environments cannot be met, the adaptability is poor, and therefore the safety performance of the self-closing valve is affected, and therefore the pipeline gas safety self-closing valve is provided.

Disclosure of Invention

An object of the utility model is to provide a pipeline gas safety self-closing valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a pipeline gas safety self-closing valve, includes the valve body, is provided with the disk seat in the valve body, is equipped with the air cavity in the valve body, sets up air inlet, gas outlet and the installing port that is linked together with the air cavity on the valve body, and the installing port department of valve body is equipped with the valve gap through the screw rod lid, and the bottom of valve gap is equipped with along with the diaphragm that the air cavity internal gas pressure goes up and down and the position reciprocated, and the diaphragm is sealed with the installing port, the lower extreme of diaphragm is installed and is used for opening the disk seat or close sealed seal structure as the diaphragm goes up and down, still install the ball valve that is used for the operator to operate the gas on the valve body, and the ball valve is installed one section that the valve body is close to air inlet department, the one end that the valve body is located the air inlet is inserted and is equipped with the valve cap, is provided with impurity filtering's filter screen in the valve cap, and the filter screen passes through jump ring fixed mounting in the valve cap.

Furthermore, seal structure is including connecting the disk at the diaphragm lower extreme, and the lower extreme adsorption of disk has magnet, and it has the screw to run through the grafting on the magnet, and the fixed cover of screw thread is equipped with the sealing rod on the screw, and the lower extreme fixedly connected with lower extreme of sealing rod forms seal structure's hard seal with the laminating of disk seat.

Further, seal structure still includes that the movable sleeve is established and is used for the baffle of hard seal body removal direction on the sealing rod, the edge portion of baffle is taken on the up end of valve body installing port, and the baffle is located the below of diaphragm, the lower extreme of magnet is connected with the cover and is established the magnet gasket that is used for protecting magnet on the hard seal body.

Furthermore, the lower end surface of the hard sealing body is of a spherical crown structure, the transverse length of the upper end of the hard sealing body is larger than the diameter of the sealing rod, and the hard sealing body and the sealing rod are of an integrated forming structure.

Furthermore, the sealing structure further comprises a first sealing ring which is sleeved on the outer surface of the thick section of the hard sealing body and used for forming a soft sealing structure with the valve seat.

Furthermore, the hard sealing body is made of one of aluminum, iron and copper alloy.

Further, the upper end middle part of diaphragm is connected with the diaphragm pressure disk, and the upper end of diaphragm is connected with the pull rod that the other end passed diaphragm pressure disk and valve gap in proper order and reachs the valve gap outside, and the movable sleeve is equipped with the pull ring that the lower extreme was installed at the valve cap up end on the pull rod, and the upper end of pull rod is connected with the cap that resets of pegging graft on the pull ring, the one end screw thread cover that the pull rod is located the valve gap below is equipped with the hexagon nut of pressing at diaphragm pressure disk up end.

Further, the ball valve includes the spheroid, and spheroidal both sides are provided with the second sealing washer of inlaying respectively and forming sealed face with the spheroid in valve body and valve cap, spheroidal upper end is connected with the other end and passes the valve rod that the valve body reachd outside, and the valve rod is located the outer one end of valve body and is connected with the handle that is used for adjusting the spheroid and opens and close, installs the overcurrent device that blocks when the gas flow is too big or the undersize in spheroidal passageway.

Further, the overflowing device comprises a first pipeline which is fixedly connected in the ball body and is provided with a through hole, a second pipeline with a through hole is sleeved on one side of the first pipeline close to the air inlet of the valve body, a cavity is formed between the first pipeline and the second pipeline, a piston for plugging the through hole of the second pipeline is arranged in the cavity, a first guide post inserted into the through hole of the second pipeline is connected to one side of the piston, a sealing plate for plugging the through hole of the first pipeline is connected to the other side of the piston, a second guide post inserted into the through hole of the first pipeline is connected to the side wall of the sealing plate, the second guide post is surrounded by a spring, two ends of the spring are fixedly connected with the side wall of the piston and the outer wall of the through hole of the first pipeline respectively, a gap convenient for gas to flow is reserved between the outer side wall of the piston and the side wall of the cavity, and a through hole communicated with the cavity is formed in the outer side wall of the second pipeline.

Furthermore, the valve cover is fixedly connected with the mounting opening of the valve body through a pressing ring.

Compared with the prior art, the beneficial effects of the utility model are that: when the self-closing valve is not in ventilation, the hard sealing body, the first sealing ring and the valve seat form soft and hard sealing and are in a closed state, when in ventilation, the ball valve is opened by rotating the handle to ventilate, then the reset cap is manually lifted, and then the valve can keep an open state;

when air leakage exists, the air pressure is too low and is less than the attraction force between the magnet and the magnetic disc, under the action of the dead weight, the magnet drives the pull rod and the hard sealing body to move downwards to complete the closing action;

when atmospheric pressure was too high, the diaphragm drove the pull rod and moves upward, under the disk effect, magnet area hard seal shifted up, at last in-process that moves, the baffle can block hard seal and shift up, make disk and magnet separation, under the action of gravity, hard seal moves down and forms sealedly with the disk seat, and simultaneously, when inlet pressure was too high, gas came too late to flow from the space, promoted piston and moved to first pipeline department, the closing plate blockked up the perforating hole of first pipeline, the completion is closed, prevent unexpected emergence, the security is good.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic view of part a of the present invention.

In the figure: the reset valve comprises a reset cap 1, a pull ring 2, a pull rod 3, a hexagon nut 4, a diaphragm pressure plate 5, a diaphragm 6, a magnetic disk 7, a valve cover 8, a pressing ring 9, a magnet 10, a magnet gasket 11, a baffle plate 12, a screw 13, a hard sealing body 14, a first sealing ring 15, a valve body 16, a second sealing ring 17, a ball 18, a valve rod 19, a handle 20, a first pipeline 21, a second pipeline 22, a piston 23, a first guide column 24, a second guide column 25, a spring 26, a sealing plate 27, a valve cap 28, a filter screen 29 and a clamp spring 30.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution:

a pipeline gas safety self-closing valve comprises a valve body 16, a valve seat is arranged in the valve body 16, an air cavity is arranged in the valve body 16, an air inlet communicated with the air cavity, an air outlet and a mounting opening are formed in the valve body 16, a valve cover 8 is arranged at the mounting opening of the valve body 16 through a screw rod cover, the valve cover 8 is fixedly connected with the mounting opening of the valve body 16 through a pressing ring 9, a diaphragm 6 which moves up and down along with the air pressure in the air cavity is arranged at the bottom of the valve cover 8, the mounting opening is sealed by the diaphragm 6, a sealing structure which is used for opening or closing the valve seat when the diaphragm 6 moves up and down is arranged at the lower end of the diaphragm 6, a ball valve used for an operator to operate and open and close gas is further arranged on one section of the valve body 16, the gas source is conveniently cut off after the self-closing valve fails, a valve cap 28 is inserted at one end of the valve body 16, and a filter screen 29 for filtering impurities is arranged in the valve cap 28, because of containing impurity debris in the gas, having lived for a long time and easily blockking up the device that overflows and cause malfunctioning, increase filter screen 29, filter impurity debris, extension equipment life, filter screen 29 passes through jump ring 30 fixed mounting in valve cap 28.

Wherein, the sealing structure comprises a magnetic disk 7 connected with the lower end of a diaphragm 6, a magnet 10 is adsorbed at the lower end of the magnetic disk 7, a screw 13 is inserted in the magnet 10 in a penetrating way, a sealing rod is fixedly sleeved on the screw 13 in a threaded way, when the gas pressure is too high, the diaphragm 6 is bulged upwards, the sealing rod automatically moves downwards to cut off the gas source, when the pressure is under-reduced, the sealing rod can move downwards under the action of gravity to automatically cut off the gas source, the lower end of the sealing rod is fixedly connected with a hard sealing body 14 of which the lower end is jointed with a valve seat to form the sealing structure, the lower end of the hard sealing body (14) is of a spherical crown structure, the transverse length of the upper end of the hard sealing body (14) is greater than the diameter of the sealing rod, the hard sealing body (14) and the sealing rod are of an integrated molding structure, the integrated structure is stable, the hard sealing body 14 is made of one material of aluminum, iron and copper alloy, the sealing structure further comprises a baffle plate 12 movably sleeved on the sealing rod and used for moving and guiding the hard sealing body 14, edge portion of baffle 12 is taken on the up end of 16 installing ports of valve body, and baffle 12 is located the below of diaphragm 6, the lower extreme of magnet 10 is connected with the cover and is established the magnet gasket 11 that is used for protecting magnet 10 on hard seal 14, seal structure still overlaps the first sealing washer 15 that is used for forming soft seal structure with the disk seat on the 14 thick section surface of hard seal body including the cover, form two-layer sealed form through hard seal body 14 and first sealing washer 15, and hard seal body 14 is hard sealed, first sealing washer 15 is soft sealed, soft or hard seal combines, make sealed effect better, can be high temperature resistant, prevent fires, in case leak gas and catch fire, can prolong rescue time.

In addition, the upper end middle part of diaphragm 6 is connected with diaphragm pressure disk 5, and the upper end of diaphragm 6 is connected with the other end and passes diaphragm pressure disk 5 and valve gap 8 in proper order and reachs the outside pull rod 3 of valve gap 8, and the activity cover is equipped with the pull ring 2 that the lower extreme was installed at valve gap 8 up end on pull rod 3, and the upper end of pull rod 3 is connected with the cap 1 that resets of pegging graft on pull ring 2, and the one end screw thread cover that pull rod 3 is located the valve gap 8 below is equipped with the hexagon nut 4 that presses at diaphragm pressure disk 5 up end.

The ball valve comprises a ball body 18, second sealing rings 17 which are respectively embedded in a valve body 16 and a valve cap 28 and form sealing surfaces with the ball body 18 are arranged on two sides of the ball body 18, the upper end of the ball body 18 is connected with a valve rod 19, the other end of the valve rod 19 penetrates through the valve body 16 to reach the outside, one end, located outside the valve body 16, of the valve rod 19 is connected with a handle 20 used for adjusting the opening and closing of the ball body 18, a manual switch obvious mark is arranged on the valve body 16 at the lower opening of the handle 20, and an overflowing device which is cut off when the gas flow is too large or too small is installed in a channel of the ball body 18.

Wherein, the overflowing device comprises a first pipeline 21 which is fixedly connected in the sphere 18 and is provided with a through hole, one side of the first pipeline 21 close to the air inlet of the valve body 16 is sleeved with a second pipeline 22 with a through hole, a cavity is formed between the first pipeline 21 and the second pipeline 22, a piston 23 for plugging the through hole of the second pipeline 22 is arranged in the cavity, one side of the piston 23 is connected with a first guide post 24 inserted in the through hole of the second pipeline 22, the other side of the piston 23 is connected with a sealing plate 27 for plugging the through hole of the first pipeline 21, the side wall of the sealing plate 27 is connected with a second guide post 25 inserted in the through hole of the first pipeline 21, a spring 26 is encircled on the second guide post 25, two ends of the spring 26 are respectively fixedly connected with the side wall of the piston 23 and the outer wall of the through hole of the first pipeline 21, a gap convenient for gas flow is left between the outer side wall of the piston 23 and the side wall of the cavity, the outer side wall of the second pipeline 22 is provided with a through hole communicated with the cavity.

When the gas safety self-closing valve for the pipeline is not ventilated, the hard sealing body 14, the first sealing ring 15 and the valve seat form soft and hard sealing, the valve is in a closed state, and the valve can resist high temperature and fire, and can prolong rescue time in case of gas leakage and ignition. During ventilation, the ball valve is opened to ventilate by rotating the handle 20, then the reset cap 1 is manually lifted, and then the valve can keep an open state;

when air leakage exists, the air pressure is too low and is smaller than the suction force between the magnet 10 and the magnetic disk 7, under the action of the dead weight, the magnet 10 drives the pull rod 3 and the hard sealing body 14 to move downwards to complete the closing action;

when the air pressure is too high, the diaphragm 6 drives the pull rod 3 to move upwards, the magnet 10 drives the hard sealing body 14 to move upwards under the action of the magnetic disc 7, in the process of moving upwards, the baffle plate 12 can block the hard sealing body 14 to move upwards, the magnetic disc 7 is separated from the magnet 10, under the action of gravity, the hard sealing body 14 moves downwards to form sealing with the valve seat, meanwhile, when the air inlet pressure is too high, air cannot flow out from a gap, the piston 23 is pushed to move towards the first pipeline 21, the sealing plate 27 blocks the through hole of the first pipeline 21, closing is completed, accidents are prevented, and safety is good.

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

1. The utility model provides a pipeline gas safety self-closing valve, includes valve body (16), is provided with the disk seat in valve body (16), is equipped with the air cavity in valve body (16), sets up air inlet, gas outlet and the installing port that is linked together with the air cavity on valve body (16), its characterized in that: the utility model discloses a valve body, including valve body (16), diaphragm (6) that the position reciprocated, diaphragm (6) that are equipped with in the bottom of valve body (16) through the screw lid, valve body (8) and the air cavity internal gas pressure goes up and down and the position goes up and down, and diaphragm (6) are sealed with the installing port, the lower extreme of diaphragm (6) is installed and is used for opening the disk seat or close sealed seal structure when diaphragm (6) goes up and down, still install the ball valve that is used for operator's operation to open and close the gas on valve body (16), and the ball valve is installed in one section that valve body (16) are close to air inlet department, valve body (16) are located the one end of air inlet and are inserted and are equipped with valve cap (28), are provided with filter screen (29) of filtering impurity in valve cap (28), and filter screen (29) are through jump ring (30) fixed mounting in valve cap (28).

2. The pipeline gas safety self-closing valve according to claim 1, characterized in that: the sealing structure comprises a magnetic disc (7) connected to the lower end of a diaphragm (6), a magnet (10) is adsorbed to the lower end of the magnetic disc (7), a screw (13) is inserted into the magnet (10) in a penetrating mode, a sealing rod is sleeved on the screw (13) in a threaded fixing mode, and the lower end of the sealing rod is fixedly connected with a hard sealing body (14) of which the lower end is attached to a valve seat to form the sealing structure.

3. The pipeline gas safety self-closing valve according to claim 2, characterized in that: the sealing structure further comprises a baffle (12) movably sleeved on the sealing rod and used for moving and guiding the hard sealing body (14), the edge portion of the baffle (12) is lapped on the upper end face of the mounting opening of the valve body (16), the baffle (12) is located below the diaphragm (6), and the lower end of the magnet (10) is connected with a magnet gasket (11) sleeved on the hard sealing body (14) and used for protecting the magnet (10).

4. A pipeline gas safety self-closing valve according to claim 3, characterized in that: the lower end surface of the hard sealing body (14) is of a spherical crown structure, the transverse length of the upper end of the hard sealing body (14) is larger than the diameter of the sealing rod, and the hard sealing body (14) and the sealing rod are of an integrated forming structure.

5. The pipeline gas safety self-closing valve according to claim 4, characterized in that: the sealing structure further comprises a first sealing ring (15) which is sleeved on the outer surface of the hard sealing body (14) and used for forming a soft sealing structure with the valve seat.

6. The pipeline gas safety self-closing valve according to any one of claims 2 to 5, wherein: the hard sealing body (14) is made of one of aluminum, iron and copper alloy.

7. The pipeline gas safety self-closing valve according to claim 1, characterized in that: the upper end middle part of diaphragm (6) is connected with diaphragm pressure disk (5), and the upper end of diaphragm (6) is connected with the other end and passes diaphragm pressure disk (5) and valve gap (8) in proper order and reachs outside pull rod (3) of valve gap (8), and the activity cover is equipped with pull ring (2) that the lower extreme was installed at valve gap (8) up end on pull rod (3), and the upper end of pull rod (3) is connected with the cap (1) that resets of grafting on pull ring (2), a screw thread cover that pull rod (3) are located valve gap (8) below is equipped with hexagonal nut (4) of pressing at diaphragm pressure disk (5) up end.

8. The pipeline gas safety self-closing valve according to claim 7, characterized in that: the ball valve includes spheroid (18), and the both sides of spheroid (18) are provided with and inlay respectively in valve body (16) and valve cap (28) with second sealing washer (17) that spheroid (18) formed the sealed face, the upper end of spheroid (18) is connected with the other end and passes valve body (16) and reachs outside valve rod (19), and valve rod (19) lie in valve body (16) outer one end and be connected with handle (20) that are used for adjusting spheroid (18) and open and close, install in the passageway of spheroid (18) that the gas flow carries out the device that overflows that blocks when too big or the undersize.

9. The pipeline gas safety self-closing valve according to claim 8, wherein: the overflowing device comprises a first pipeline (21) which is fixedly connected in a sphere (18) and is provided with a through hole, a second pipeline (22) with the through hole is sleeved on one side, close to an air inlet of a valve body (16), of the first pipeline (21), a cavity is formed between the first pipeline (21) and the second pipeline (22), a piston (23) used for plugging the through hole of the second pipeline (22) is arranged in the cavity, one side of the piston (23) is connected with a first guide column (24) inserted into the through hole of the second pipeline (22), the other side of the piston (23) is connected with a sealing plate (27) used for plugging the through hole of the first pipeline (21), the side wall of the sealing plate (27) is connected with a second guide column (25) inserted into the through hole of the first pipeline (21), a spring (26) is wound around the second guide column (25), and two ends of the spring (26) are respectively and fixedly connected with the side wall of the piston (23) and the outward wall of the through hole of the first pipeline (21), a gap convenient for gas flow is reserved between the outer side wall of the piston (23) and the side wall of the cavity, and a through hole communicated with the cavity is formed in the outer side wall of the second pipeline (22).

10. The pipeline gas safety self-closing valve according to claim 1, characterized in that: the valve cover (8) is fixedly connected with the mounting opening of the valve body (16) through a pressing ring (9).