CN107816566B - Combined valve suitable for use in gas pipeline - Google Patents
Combined valve suitable for use in gas pipeline Download PDFInfo
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- CN107816566B CN107816566B CN201711278128.4A CN201711278128A CN107816566B CN 107816566 B CN107816566 B CN 107816566B CN 201711278128 A CN201711278128 A CN 201711278128A CN 107816566 B CN107816566 B CN 107816566B
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- 238000002347 injection Methods 0.000 claims abstract description 54
- 239000007924 injection Substances 0.000 claims abstract description 54
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 29
- 230000002093 peripheral effect Effects 0.000 claims description 17
- 239000004033 plastic Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 125000003003 spiro group Chemical group 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 6
- 230000000712 assembly Effects 0.000 abstract 2
- 238000000429 assembly Methods 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 57
- 108010036050 human cationic antimicrobial protein 57 Proteins 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/20—Check valves specially designed for inflatable bodies, e.g. tyres
- F16K15/207—Check valves specially designed for inflatable bodies, e.g. tyres and combined with other valves, e.g. safety valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K35/00—Means to prevent accidental or unauthorised actuation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses a combined valve suitable for a gas pipeline, which comprises a ball valve formed by a ball valve body, two movable joint assemblies with threaded joint ends at two sides of the ball valve body, a locking device arranged at the upper part of the ball valve body, and a self-closing gas injection valve formed by a valve body, an inner joint, a valve plug, a valve cover, a valve core, a stopping device and the like, wherein the two movable joint assemblies are in threaded connection with each other; the joint part of the air inlet joint of the self-closing gas injection valve is provided with an internal thread joint which is fixedly combined into a whole by screwing with an external thread joint arranged at the head part of a connecting pipe joint of a connecting sleeve on the ball valve. The self-closing gas injection valve of the combination valve is characterized in that a valve body and a valve cover of the self-closing gas injection valve of the combination valve are further provided with locking devices, and detection interfaces are further arranged in the middle of the front side and the rear side of the valve body of the gas injection valve respectively. The combined valve is applied to a gas pipeline, and has the advantages of saving the cost and the installation cost of the pipeline and improving the reliability of the operation of the pipeline. Meanwhile, the valve is convenient to manage and control, and the gas in the pipeline is detected, analyzed and sampled.
Description
Technical Field
The invention relates to a pipeline valve, in particular to a combined valve suitable for being used in a gas pipeline.
Background
Currently, a ball valve with an existing structure is commonly used as a valve for controlling opening and closing in a gas pipeline, and in the process of matching the ball valve with the pipeline, a movable joint which is convenient to detach is generally required to be connected in series in a pipe connected with two ends of the ball valve, so that the valve is convenient to detach when faults such as damage occur to the valve or air leakage occur to an interface connected with the pipe in the process of installing and using the pipeline. In the pipeline coupling of copper and stainless steel thin-wall pipes, specially-manufactured movable joints are adopted, so that the cost of the pipeline is increased, and the installation cost of the pipeline is increased. In addition, in some use cases, the valve on the pipeline is required to be controlled to be opened and closed so as to prevent the valve from being opened and closed by people.
For this reason, the present company developed a novel ball valve and filed a chinese utility model patent, patent application number: 201720371622.4, the structure of the valve is as shown in fig. 8-9, the ball valve comprises a ball valve body 1, a movable joint assembly 2 which is in threaded connection with two ends of the ball valve body 1, and a locking device 3 which is arranged at the upper part of the ball valve body, wherein the movable joint 2 assembly comprises movable joint nuts 21 which are in threaded connection with two external threaded interface ends of the ball valve body, 3-6 round through holes 211 which are uniformly distributed are arranged on the hexagonal peripheral surface of the movable joint nuts 21, a connecting sleeve 22 is fixedly sleeved in the through holes of the movable joint nuts 21, a sealing ring is embedded in a groove which is arranged on the inner end surface of the connecting sleeve 22, a cover plate 23 is arranged between the inner end surface of the connecting sleeve 22 and the end surface of the ball valve body, a sealing ring is embedded in the groove which is close to one side of the end surface of the ball valve body, and the outer end part of the through holes of the connecting sleeve 22 is connected with a connecting pipe 24; the cover plate 23 has two structures, namely a white hollow cover plate and a red solid cover plate, and can be selected according to the control requirement of starting or closing the valve connecting pipeline, and in actual use, the color of the cover plate in the inner cavity can be observed through the round through holes 211 arranged on the hexagonal peripheral surface of the loose joint nut 21. The locking device 3 arranged on the upper portion of the ball valve body 1 comprises a locking sleeve 31 sleeved on the inclined portion of the ball valve handle 11, the locking sleeve 31 can slide up and down on the inclined portion of the handle 11, two convex legs 311 with middle openings extending vertically downwards are arranged at the bottom of the lower end of the locking sleeve 31, a locking through hole 111 is arranged on the upper portion of the inclined portion of the handle 11, an unlocking block 312 and a locking block 313 which are arranged on one side of the ball valve body 1 and are in the same crossed vertical plane included angle with opening and closing handle baffles 12 and 13 are arranged on the upper portion of the valve body, an angle of 90 degrees is formed between the opening between the two convex legs 311 of the locking sleeve 31 and the two sides of the locking block 313 or the two sides of the pulling block 312 when the ball valve is in a full-closing state, the opening between the two convex legs 311 of the locking sleeve 31 can be buckled on the two sides of the locking block 313 or the two sides of the pulling block 312 when the ball valve is in a full-closing state, the opening between the two convex legs 311 can be buckled on the two sides of the locking sleeve 11 and can not be buckled on the two sides of the locking block 312 when the ball valve is in a full-closing state, and the opening of the ball valve cannot be buckled on the inclined portion 11 when the ball valve is in a full-closing state, and the opening of the locking sleeve 11 can not be buckled on the inclined portion of the handle 11 can not be locked by sliding on the handle 11 when the ball valve 11 is in a full-closing state.
The movable joint components convenient to detach and the locking device arranged on the upper part of the ball body are arranged at the two ends of the inlet and outlet interfaces of the novel ball valve, so that the novel ball valve is convenient for a user to install, use, maintain, replace and manage and control, and meanwhile, the cost and the installation cost of a pipeline are saved. However, in some gas pipeline structures, it is required to arrange a branch pipeline which is connected with a mixed gas medium conveniently in the pipeline at the output end of the control opening and closing ball valve, and the common practice is to connect branch pipelines which are formed by a three-way pipe joint, a one-way valve, a short connecting pipe, a connecting head and the like in series in the pipeline.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a combined valve which is formed by combining the novel ball valve convenient to mount and dismount and a newly developed self-closing gas injection valve into a whole and is suitable for being used in a gas pipeline.
The technical scheme adopted by the invention is as follows: the utility model provides a combination valve that uses in being fit for gas piping, includes the ball valve that comprises the loose joint subassembly of a ball valve body 1 and ball valve body both ends spiro union and the locking device that ball valve body upper portion set up, its characterized in that: the self-closing gas injection valve is also included; the head part of the connecting sleeve in the movable joint assembly which is in threaded connection with the left end of the ball valve body and extends out of the center through hole end of the movable joint nut is provided with an elongated connecting pipe, the head part of the connecting pipe is provided with an external threaded joint, the threaded tail end part of the external threaded joint is provided with a groove, and a joint sealing ring is arranged in the groove;
The self-closing gas injection valve comprises a valve body with an inverted T-shaped structure, wherein the valve body is composed of an air inlet interface, an air outlet interface and a gas injection interface; the inner channel of the air inlet interface, the inner channel of the air outlet interface and the inner hole of the air injection interface are communicated with the inner cavity of the valve body; an inner joint is fixedly connected to the upper part of an inner hole of the gas injection interface of the valve body in a threaded manner, an upper groove and a lower groove are formed in the peripheral surfaces of shafts at the two ends of an external thread head and a tail of the inner joint, and an upper sealing ring and a lower sealing ring are respectively sleeved in the upper groove and the lower groove; the inner joint is provided with a central through hole, the upper aperture of the central through hole is larger than the lower aperture, and a first step is formed on the transition surface of the upper hole and the lower hole; the valve plug is connected in a sliding fit manner in an upper hole of the central through hole of the inner joint, a groove is formed in the peripheral surface of the lower shaft of the valve plug, a valve plug sealing ring is sleeved in the groove, and a second step is formed in the upper part of the valve plug; the valve cover is sleeved on the shaft peripheral surface of the upper part of the second step of the valve plug, an inner threaded interface is arranged at the lower opening part of the inner cavity of the valve cover and is fixedly connected with an outer threaded interface which is arranged at the head part of the gas injection interface of the valve body in a threaded manner, and the top surface of the inner cavity of the valve cover is respectively abutted against the top surface of the upper end of the inner joint and the surface of the second step of the valve plug; the shaft head of the valve plug is provided with a stop device for limiting the valve cover to be separated from the sleeve connection with the valve plug;
The valve core is sleeved in the through hole at the lower part of the central through hole of the inner joint in a sliding fit manner, a barb head ring is arranged on the shaft peripheral surface of the head end of the central shaft of the valve core, the bottom surface of the barb head ring is abutted against the upper opening end surface of the through hole at the lower part of the central through hole, the valve core is limited to slide out of the through hole at the lower part of the central through hole, the central shaft of the valve core is provided with a central blind hole, two sides of the central blind hole are provided with open slots with equal width, two sides of the lower part of the open slots are provided with transverse through holes, the upper surface of a disc at the bottom end of the central shaft of the valve core is provided with a valve core groove, and a sealing rubber ring is embedded in the valve core groove; the bottom surface of the lower end of the inner joint is a smooth sealing surface;
The upper surface of the air inlet interface of the valve body is provided with a flat protruding head perpendicular to the axis, a first locking through hole is arranged in the middle of the flat surface of the flat protruding head, the axial circumferential surface of the upper surface valve cover of the lower circular cap edge of the valve cover is provided with a locking ring groove, a locking ring is sleeved on the locking ring groove in a sliding fit manner, one side of the locking ring is provided with a locking head which is folded downwards to form a 90-degree angle with the upper part of the locking ring, a second locking through hole is arranged in the middle of the locking head, and the locking ring sleeved on the rotary valve cover can enable the second locking through hole to correspond to the first locking through hole;
The joint part of the air inlet joint of the self-closing gas injection valve is provided with an integrated combination valve formed by screwing and fixing an internal thread joint and an external thread joint arranged at the head part of a connecting pipe joint of the connecting sleeve on the ball valve.
Preferably, the stop device arranged on the shaft head of the valve plug consists of a valve belt groove arranged on the shaft head of the valve plug and a flat plastic connecting belt sleeved in the valve belt groove, and the tail part of the flat plastic connecting belt is provided with a ferrule which is sleeved and fixed with the shaft peripheral surface of the head part of the air outlet interface of the valve body.
Preferably, the upper end of the through hole at the lower part of the central through hole is provided with a countersunk hole, the bottom surface of the countersunk hole is perpendicular to the axial lead of the central through hole, a barb head ring of the valve core sleeved in the through hole at the lower part of the central through hole is movably matched and connected with the countersunk hole arranged at the upper end of the through hole at the lower part of the central through hole, and the bottom surface of the barb head ring is abutted to the bottom surface of the countersunk hole to limit the valve core to slide out of the through hole at the lower part of the central through hole.
Further, a connecting copper pipe is sleeved and welded on the interface part of the air outlet interface.
Further, the interface part of the air outlet interface is provided with an internal thread opening.
Further, the middle of the front side and the rear side of the valve body is respectively provided with a detection interface, the detection interface is provided with a central through hole communicated with the inner cavity of the valve body, an external thread joint arranged at the head part of the detection interface is in threaded connection with a sealing cap, and the top surface of the inner cavity of the sealing cap is provided with a sealing sheet.
Further, the ball valve of the combination valve and the two valve bodies of the self-closing gas injection valve are respectively provided with a convex column in the middle, the bottom surfaces of the two convex columns are respectively provided with a first supporting leg and a second supporting leg, and the first supporting leg and the second supporting leg are fixedly connected with screw holes arranged on the bottom surfaces of the two convex columns through screws.
Compared with the prior art, the invention has the advantages that: the combined valve is a multifunctional valve which is integrated with a novel ball valve and a newly developed self-closing gas injection valve into a whole in design, and has the advantages of keeping the original novel ball valve as well as the following advantages: when the gas pipeline is actually connected in a matching way, one valve can replace two valves, a plurality of pipe joints and connecting pipes, so that the cost and the installation cost of the pipeline are saved, the number of the connecting joints of the pipeline is reduced, the probability of faults such as air leakage and the like in the operation of the pipeline is reduced, and the reliability of the operation of the pipeline is improved. And the mixed gas is added into the pipeline in the operation of the pipeline, so long as the sealing cover of the self-closing gas injection valve of the combined valve is opened, the special connector connected with the gas injection pipe is connected to the gas injection valve connector, the operation is simple and convenient, and meanwhile, the second locking device arranged on the upper part of the valve body can be conveniently hung with the lock to manage and control the valve cover opening of the gas injection valve, so that the valve cover phenomenon of manually and randomly opening the gas injection valve is prevented, and the use safety of the valve is ensured. In addition, the middle of the front side and the rear side of the valve body of the self-closing gas injection valve are respectively provided with a detection interface, so that the self-closing gas injection valve can be conveniently connected with a gas detection instrument, and can detect parameters such as gas concentration, pressure and the like in a pipeline or conveniently analyze and sample the gas in the pipeline.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention;
FIG. 2 is a schematic diagram of an embodiment of the present invention;
FIG. 3 is an enlarged view of the self-closing gas injection valve portion of FIG. 2;
FIGS. 4-1 and 4-2 are schematic views of the valve core structure of the self-closing gas injection valve according to the embodiment of the present invention;
FIG. 5 is a schematic view of a locking ring structure of a self-closing gas injection valve according to an embodiment of the present invention;
FIG. 6 is a front view of a self-closing gas injection valve portion of an embodiment of the present invention;
FIG. 7 is a cross-sectional view taken along A-A of FIG. 6;
FIG. 8 is a perspective view of a prior application ball valve;
Fig. 9 is a schematic view of the structure of a ball valve of the prior application.
In the figure: 1a, ball valve, 1b, self-closing gas injection valve, 1, ball valve body, 11, ball valve handle, 111, lock through hole, 12, open handle stopper, 13, close handle stopper 13,2, union assembly, 21, union nut, 211, through hole, 22, connecting sleeve, 221, male screw joint, 222, groove, 223, joint seal ring, 23, cover plate, 24, connecting pipe, 3, locker, 31, lock sleeve, 311, boss, 312, unlocking block, 313, locking block, 4, first supporting leg, 41, second supporting leg, 5, valve body, 51, inlet port, 52, outlet port, 521, connecting copper pipe, 53, gas injection port, 54, boss, 541, first lock through hole, 55, lock ring, 551, lock head, 552, second lock through hole, 56, detection interface, 57, seal cap, 58, seal piece, 6, nipple, 61, upper seal ring, 62, lower seal ring, 63, first step, 64, counter bore, 7, valve plug, 71, valve plug seal ring, 72, second step, 73, valve band groove, 8, valve cap, 81, lock ring groove, 9, stop means, 91, flat plastic connection band, 911, ferrule, 10, valve core, 101, central blind hole, 102, open slot, 103, through hole, 104, barb head ring, 105, valve core groove, 106, and sealing gasket.
Detailed Description
The invention will be described in further detail with reference to examples in the drawings.
Referring to fig. 1 to 7, a combination valve suitable for use in a gas pipeline, comprising a ball valve 1a comprising a ball valve body 1, a movable joint assembly 2 screwed to two ends of the ball valve body 1, and a locking device 3 disposed on the upper portion of the ball valve body 1, is characterized in that: the self-closing gas injection valve 1b is also included; the head part of the connecting sleeve 22 in the movable joint assembly 2 which is screwed at the left end of the ball valve body 1 and extends out of the center through hole end of the movable joint nut 21 is provided with an elongated connecting pipe, the head part of the connecting pipe is provided with an external threaded joint 221, the threaded tail end part of the external threaded joint 221 is provided with a groove 222, and a joint sealing ring 223 is arranged in the groove 222.
The self-closing gas injection valve 1b comprises a valve body 5 with an inverted T-shaped structure, wherein the valve body is composed of an air inlet interface 51, an air outlet interface 52 and a gas injection interface 53; the inner channel of the air inlet interface 51, the inner channel of the air outlet interface 52 and the inner hole of the air injection interface 53 are communicated with the inner cavity of the valve body 5; an inner joint 6 is fixedly connected to the upper part of an inner hole of the gas injection interface 53 of the valve body 5 in a threaded manner, upper and lower grooves are formed in the peripheral surfaces of shafts at the two ends of the outer thread head and the tail of the inner joint 6, which are in threaded connection with the gas injection interface 53, and upper and lower sealing rings 61 and 62 are respectively sleeved in the upper and lower grooves; the inner joint 6 is provided with a central through hole, the upper aperture of the central through hole is larger than the lower aperture, a first step 63 is formed on the transition surface of the upper and lower holes, the upper end part of the lower through hole of the central through hole is provided with a countersunk hole 64, and the bottom surface of the countersunk hole 64 is perpendicular to the axial lead of the central through hole; the valve plug 7 is connected in a sliding fit manner in the upper hole of the central through hole of the inner joint 6, the lower shaft peripheral surface of the valve plug 7 is provided with a groove, the groove is sleeved with a valve plug sealing ring 71, and the upper part of the valve plug 7 is provided with a second step 72; a valve cover 8 is sleeved on the upper shaft peripheral surface of the second step 72 of the valve plug 7, an inner threaded interface is arranged at the lower opening part of the inner cavity of the valve cover 8 and is fixedly connected with an outer threaded interface which is arranged at the head part of the gas injection interface 53 of the valve body 5 in a threaded manner, and the top surface of the inner cavity of the valve cover 8 is respectively abutted against the top surface of the upper end of the inner joint 6 and the surface of the second step 72 of the valve plug 7; the shaft head of the valve plug 7 is provided with a stop device 9 for limiting the valve cover 8 to be separated from the sleeved connection with the valve plug 7, the stop device 9 consists of a valve belt groove 73 arranged on the shaft head of the valve plug 7 and a flat plastic connecting belt 91 sleeved in the valve belt groove 73, the tail part of the flat plastic connecting belt 91 is provided with a ferrule 911 which is sleeved and fixed with the shaft peripheral surface of the head part of the air outlet port 52 of the valve body 5, the ferrule 911 plays a role in preventing the valve cover 8 from being separated from the screwed connection with the head part of the air injection port 53 on the valve body 5 and the valve plug 7 which is sleeved and connected with the valve cover 8 can be hung on the valve body 5 to prevent loss; the valve core 10 with an inverted T-shaped structure is sleeved in the through hole at the lower part of the central through hole of the inner joint 6 in a sliding fit manner, a barb head ring 104 is arranged on the shaft peripheral surface of the head end part of the central shaft of the valve core 10, the barb head ring 104 is movably connected with a countersunk hole 64 arranged at the upper end part of the through hole at the lower part of the central through hole in a fit manner, the valve core 10 is limited to slide out of the through hole at the lower part of the central through hole, a central blind hole 101 is arranged on the central shaft of the valve core 10, open slots 102 with equal width are arranged on two sides of the central blind hole 101, transverse through holes 103 are arranged on two sides of the lower part of the open slot 102, a valve core groove 105 is arranged on the upper surface of a disc at the bottom end of the central shaft of the valve core 10, and a sealing rubber ring 106 is embedded in the valve core groove 105; the bottom surface of the lower end of the inner joint 6 is a smooth sealing surface.
The upper surface of the air inlet interface 51 of the valve body 5 is provided with a flat raised head 54 vertical to the axis, a first locking through hole 541 is arranged in the middle of the flat surface of the flat raised head 54, a locking ring groove 81 is arranged on the axial circumferential surface of the upper surface valve cover of the lower circular ring cap edge of the valve cover 8, a locking ring 55 is sleeved on the locking ring groove 81 in a sliding fit manner, one side of the locking ring 55 is provided with a locking head 551 which is folded downwards to form a 90-degree angle with the upper part of the locking ring, and a second locking through hole 552 is arranged in the middle of the locking head 551. When in use, the lock ring 55 sleeved on the valve cover 8 can be rotated, so that the second lock through hole 552 corresponds to the first lock through hole 541, and the valve cover 8 can be locked by penetrating a padlock into the two lock holes, so that the valve cover 8 is limited to rotate and be separated from the screw connection with the head of the gas injection interface 53 on the valve body 5.
The middle of the front side and the rear side of the valve body 5 are respectively provided with a detection interface 56, the detection interface 56 is provided with a central through hole communicated with the inner cavity of the valve body 5, an external thread connector arranged at the head of the detection interface 56 is in threaded connection with a sealing cap 57, and the top surface of the inner cavity of the sealing cap 57 is provided with a sealing sheet 58. The detection interface is used for being connected with a gas detection instrument and the like.
The interface part of the air inlet interface 51 of the self-closing air injection valve 1b is provided with an internal thread interface, and the interface part of the air outlet interface 52 is sleeved and welded with a connecting copper pipe 521 so as to be connected with a pipe of a pipeline during installation, and the interface part of the air outlet interface 52 is provided with an internal thread interface so as to be connected with the pipe of the pipeline during installation.
The self-closing gas injection valve 1b is characterized in that an internal thread interface arranged at the interface part of the gas inlet interface 51 is fixedly connected with an external thread joint 221 arranged at the head part of a connecting pipe of a connecting sleeve 22 in a movable joint assembly 2 which is in threaded connection with the left end of a ball valve body 1 of the ball valve 1a in a threaded manner to form an integral combined valve.
The middle of the bottom of the valve body of the ball valve 1a of the combined valve is provided with a convex column, the bottom surface of the convex column is provided with a first supporting leg 4, and the convex column is fixedly connected with a screw hole arranged on the bottom surface of the convex column through a screw in a threaded manner.
The middle of the bottom of the valve body 5 of the self-closing gas injection valve 1b of the combined valve is provided with a convex column, the bottom surface of the convex column is provided with a second supporting leg 41, and the convex column is fixedly connected with a screw hole arranged on the bottom surface of the convex column through a screw.
The right end interface of the combination valve is an air inlet interface, and the left end interface of the combination valve is an air outlet interface.
The use of the combination valve of the invention: when the combined valve is connected to a gas pipeline for use, a ball valve 1a in the combined valve is used as a valve for controlling opening and closing, a self-closing gas injection valve 1b in the combined valve is used as a control valve for adding different medium gases, if the gas injected into different mediums is required to be added into the pipeline in the ventilation operation of the pipeline, a valve cover 8 on the self-closing gas injection valve 1b can be rotated to be separated from the screw joint with the head of a gas injection interface 53 on a valve body 5, so that a valve plug 7 in an inner joint 6 is pulled out, at the moment, a valve core 10 sleeved in a lower hole of a central through hole of the inner joint 6 slides upwards to the upper surface of a disc of the valve core 10 under the action of internal and external gas pressure difference, a sealing rubber ring 106 embedded in a valve core groove 105 is abutted against a sealing surface of the bottom surface of the inner joint 6, so that the gas injected into the pipe is prevented from leaking out, and then the gas injected into the pipeline can be added by connecting a special connecting joint connected with a gas injection hose on the gas injection interface 53.
The embodiments of the invention described above are not intended to limit the scope of the invention, and any modifications, equivalents, improvements, etc. that fall within the spirit of the principles of the invention are intended to be included within the scope of the claims.
Claims (7)
1. The utility model provides a combination valve who uses in being fit for gas piping, includes ball valve (1 a) that comprise loose joint assembly (2) and latch mechanism (3) that ball valve body (1) upper portion set up by a ball valve body (1) and ball valve body (1) both ends spiro union, its characterized in that: the device also comprises a self-closing gas injection valve (1 b); the ball valve is characterized in that a connecting sleeve (22) in a movable joint assembly (2) which is in threaded connection with the left end of the ball valve body (1) extends out of the head of the center through hole end of a movable joint nut (21), an elongated connecting pipe is arranged at the head of the connecting pipe, an external threaded joint (221) is arranged at the head of the connecting pipe, a groove (222) is arranged at the tail end part of the thread of the external threaded joint (221), and a joint sealing ring (223) is arranged in the groove (222);
The self-closing gas injection valve (1 b) comprises a valve body (5) with an inverted T-shaped structure, wherein the valve body is composed of an air inlet interface (51), an air outlet interface (52) and a gas injection interface (53); the inner channel of the air inlet interface (51), the inner channel of the air outlet interface (52) and the inner hole of the air injection interface (53) are communicated with the inner cavity of the valve body (5); an inner joint (6) is fixedly connected to the upper part of an inner hole of a gas injection interface (53) of the valve body (5) in a threaded manner, upper and lower grooves are formed in the peripheral surfaces of shafts at the two ends of an outer thread head and a tail of the inner joint (6) which are in threaded connection with the gas injection interface (53), and upper and lower sealing rings (61) and (62) are respectively sleeved in the upper and lower grooves; the inner joint (6) is provided with a central through hole, the upper aperture of the central through hole is larger than the lower aperture, and a first step (63) is formed on the transition surface of the upper hole and the lower hole; a valve plug (7) is connected in a sliding fit manner in an upper hole of the central through hole of the inner joint (6), a groove is formed in the lower shaft peripheral surface of the valve plug (7), a valve plug sealing ring (71) is sleeved in the groove, and a second step (72) is formed in the upper part of the valve plug (7); a valve cover (8) is sleeved on the upper shaft peripheral surface of the second step (72) of the valve plug (7), an inner threaded interface is arranged at the lower opening part of the inner cavity of the valve cover (8) and is in threaded connection and fixation with an outer threaded interface arranged at the head part of the gas injection interface (53) of the valve body (5), and the top surface of the inner cavity of the valve cover (8) is respectively abutted against the top surface of the upper end of the inner joint (6) and the surface of the second step (72) of the valve plug (7); the shaft head of the valve plug (7) is provided with a stop device (9) which limits the valve cover (8) to be separated from the sleeve connection with the valve plug (7);
A valve core (10) with an inverted T-shaped structure is sleeved in the through hole at the lower part of the central through hole of the inner joint (6) in a sliding fit manner, a barb head ring (104) is arranged on the shaft peripheral surface of the head end of the central shaft of the valve core (10), the bottom surface of the barb head ring (104) is abutted against the upper opening end surface of the through hole at the lower part of the central through hole, the valve core (10) is limited to slide out of the through hole at the lower part of the central through hole, a central blind hole (101) is arranged in the central shaft of the valve core (10), open slots (102) with the same width are arranged at two sides of the central blind hole (101), transverse through holes (103) are arranged at two sides of the lower part of the open slots (102), a valve core groove (105) is arranged on the upper surface of a disc at the bottom end of the central shaft of the valve core (10), and a sealing rubber ring (106) is embedded in the valve core groove (105); the bottom surface of the lower end of the inner joint (6) is a smooth sealing surface;
The upper surface of the air inlet interface (51) of the valve body (5) is provided with a flat convex head (54) perpendicular to the axis, a first lock through hole (541) is arranged in the middle of the flat surface of the flat convex head (54), a lock ring groove (81) is arranged on the axial circumferential surface of the upper surface valve cover of the lower circular ring cap edge of the valve cover (8), a lock ring (55) is sleeved and matched on the lock ring groove (81) in a sliding manner, one side of the lock ring (55) is provided with a lock head (551) which is folded downwards to form a 90-degree angle with the upper part of the lock ring, a second lock through hole (552) is arranged in the middle of the lock head (551), and the lock ring (55) sleeved on the valve cover (8) is rotated, so that the second lock through hole (552) corresponds to the first lock through hole (541);
an interface part of an air inlet interface (51) of the self-closing air injection valve (1 b) is provided with an external screw thread connector (221) which is screwed and fixed with a connecting pipe head part of a connecting sleeve (22) in a movable joint assembly (2) which is screwed and connected with the left end of a ball valve body (1) of the ball valve (1 a) to form an integrated combined valve.
2. A combination valve for use in a gas pipeline as claimed in claim 1, wherein: the stop device (9) arranged on the shaft head of the valve plug (7) consists of a valve belt groove (73) arranged on the shaft head of the valve plug (7) and a flat plastic connecting belt (91) sleeved in the valve belt groove (73), wherein a ferrule (911) is arranged at the tail of the flat plastic connecting belt (91) and is sleeved and fixed with the shaft peripheral surface of the head of the air outlet interface (52) of the valve body (5).
3. A combination valve for use in a gas pipeline as claimed in claim 1, wherein: the upper opening end part of the through hole at the lower part of the central through hole is provided with a countersunk head hole (64), the bottom surface of the countersunk head hole (64) is perpendicular to the axial lead of the central through hole, a barb head ring (104) of a valve core (10) sleeved in the through hole at the lower part of the central through hole is movably matched and connected with the countersunk head hole (64) arranged at the upper opening end part of the through hole at the lower part of the central through hole, and the bottom surface of the barb head ring (104) is abutted against the bottom surface of the countersunk head hole (64) to limit the valve core (10) to slide out of the through hole at the lower part of the central through hole.
4. A combination valve for use in a gas pipeline as claimed in claim 1, wherein: the connecting copper pipe (521) is sleeved and welded on the interface part of the air outlet interface (52).
5. A combination valve for use in a gas pipeline as claimed in claim 1, wherein: the interface part of the air outlet interface (52) is provided with an internal thread opening.
6. A combination valve for use in a gas pipeline as claimed in claim 1, wherein: the valve body (5) front and back both sides in the middle of be equipped with respectively and detect interface (56), be equipped with on this detection interface (56) with the communicating central through-hole of valve body (5) inner chamber, on the external screw thread joint that detects interface (56) head was equipped with the spiro union have sealed cap (57), the inner chamber top surface of sealed cap (57) is provided with sealing fin (58).
7. A combination valve according to any one of claims 1 to 6, adapted for use in a gas pipeline, wherein: the ball valve (1 a) of the combination valve and the two valve bodies of the self-closing gas injection valve (1 b) are respectively provided with convex columns in the middle, the bottom surfaces of the two convex columns are respectively provided with a first supporting leg (4) and a second supporting leg (41), and the two convex columns are fixedly connected with screw holes arranged on the bottom surfaces of the two convex columns in a screwed manner by screws.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711278128.4A CN107816566B (en) | 2017-12-06 | 2017-12-06 | Combined valve suitable for use in gas pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711278128.4A CN107816566B (en) | 2017-12-06 | 2017-12-06 | Combined valve suitable for use in gas pipeline |
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| CN107816566A CN107816566A (en) | 2018-03-20 |
| CN107816566B true CN107816566B (en) | 2024-05-31 |
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| CN201711278128.4A Active CN107816566B (en) | 2017-12-06 | 2017-12-06 | Combined valve suitable for use in gas pipeline |
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| CN110712338B (en) * | 2019-10-18 | 2021-08-13 | 河源联达真空镀膜有限责任公司 | Production process of coated plastic tableware |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107816566A (en) | 2018-03-20 |
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