CN112081943A - Integral structure's card pressure formula ball valve - Google Patents

Integral structure's card pressure formula ball valve Download PDF

Info

Publication number
CN112081943A
CN112081943A CN202011023492.8A CN202011023492A CN112081943A CN 112081943 A CN112081943 A CN 112081943A CN 202011023492 A CN202011023492 A CN 202011023492A CN 112081943 A CN112081943 A CN 112081943A
Authority
CN
China
Prior art keywords
valve
clamping
valve body
pressing
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011023492.8A
Other languages
Chinese (zh)
Inventor
郑振义
陈城
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuzhou Zhenxie Pipe Co ltd
Original Assignee
Fuzhou Zhenxie Pipe Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuzhou Zhenxie Pipe Co ltd filed Critical Fuzhou Zhenxie Pipe Co ltd
Publication of CN112081943A publication Critical patent/CN112081943A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/001—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass valves or valve housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/02—Welded joints
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/16—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars
    • F16L13/161—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars the pipe or collar being deformed by crimping or rolling
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/14—Joints for pipes of different diameters or cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

The invention discloses a clamping and pressing type ball valve with an integral structure in the technical field of valves, which comprises a valve body, wherein one end of the valve body is provided with a socket, the other end of the valve body is fixedly provided with a valve end clamping and pressing pipe, the valve end clamping and pressing pipe and the valve body are of an integral structure, and the valve end clamping and pressing pipe is provided with an outer convex groove; the clamping and pressing pipe fitting is provided with a plug connector at one end and a pipeline interface at the other end, an outer convex groove is also arranged on the clamping and pressing pipe fitting, the plug connector is inserted into the socket, and the plug connector and the socket are welded, sealed and fixed through all-welding; every all be provided with the card in the evagination groove and press the sealing washer, operation that can be more convenient need not be at the installation site welding, has avoided naked light to connect the operation, and the installation is more simple and convenient, is holistic structure moreover, does not fear pressure and temperature variation, and intensity is higher, and the leakproofness is stronger, uses the condition that also is difficult for taking place to leak under more abominable operational environment moreover for a long time, operates safelyr.

Description

Integral structure's card pressure formula ball valve
Technical Field
The invention relates to the technical field of valves, in particular to a clamping and pressing type ball valve with an integral structure.
Background
The ball valve is one of the most common valves in pipeline medium conveying equipment, and is mainly applied to the refrigeration industry. Currently, when a ball valve in the refrigeration industry is installed in a refrigeration system, the ball valve is connected with a butt-joint pipe fitting in the refrigeration system through a socket of the ball valve and a welding mode. When an ordinary ball valve is installed, after an abutting pipe fitting is inserted into a bell mouth of the ball valve, the ball valve needs to be welded on site, equipment such as a welding machine and an oxygen tank needs to be arranged, the operation is troublesome, and operation risks exist. The welding mode is complicated in process, and a technician is required to have a professional welding skill certificate to post, so that the application and popularization of the welding mode are limited.
The existing ball valves have more welding joints, the welding points are brittle, and the welding joints are easy to leak under the working environment with long-term cold and hot alternation and frequent pressure change.
In order to avoid using open flame welding process in the installation process of the ball valve, reduce the risk in operation and improve the working efficiency, the integral clamping and pressing type ball valve for refrigeration is introduced.
Disclosure of Invention
The invention aims to provide a clamping and pressing type ball valve with an integral structure, which can be operated more conveniently, does not need to be welded on an installation site, avoids open fire connection operation, is simpler and more convenient to install, has an integral structure, is not afraid of pressure and temperature change, has higher strength and stronger sealing property, is not easy to leak after being used for a long time in a more severe working environment, and is safer to operate.
The invention is realized by the following steps: a unitary snap-on ball valve comprising:
the valve comprises a valve body, a valve body and a valve body, wherein one end of the valve body is provided with a socket, the other end of the valve body is fixedly provided with a valve end clamping and pressing pipe, the valve end clamping and pressing pipe and the valve body are of an integral structure, and the valve end clamping and pressing pipe is provided with an outward convex groove;
the clamping and pressing pipe fitting is provided with a plug connector at one end and a pipeline interface at the other end, an outer convex groove is also arranged on the clamping and pressing pipe fitting, the plug connector is inserted into the socket, and the plug connector and the socket are welded, sealed and fixed through all-welding;
a clamping and pressing sealing ring is arranged in each outer convex groove;
the outer convex groove is an arc-shaped annular groove which is formed on the inner shaft walls of the valve end clamping pipe and the clamping pipe fitting and protrudes outwards, and the outer wall of the clamping sealing ring is attached to the inner shaft wall of the outer convex groove; the clamping and pressing sealing ring is in interference fit with the externally inserted butt joint pipe.
Further, the clamping and pressing sealing ring is an O-shaped rubber ring.
Further, the position that the pipe fitting inner shaft wall is pressed close to valve body one side is provided with inside bellied spacing boss to the card, spacing boss supports to spacing with external male butt joint pipe each other.
Furthermore, the valve end clamping pipe is of an integral structure formed by turning one end of the valve body.
Furthermore, a position, close to one side of the valve body, of the inner shaft wall of the valve end clamping pressure pipe is provided with a limiting step protruding inwards, and the limiting step and the butt joint pipe inserted externally abut against each other for limiting.
Furthermore, the valve body comprises a valve cover and a connecting belt, the valve cover is arranged at the top of the valve body, two ends of the connecting belt are respectively connected with the top of the valve cover and the top of the valve body, two valve sealing rings, a valve rod, at least two sealing rubber rings, a valve rod gasket and a ball body are arranged in the valve body, the lower end of the valve rod is connected with the upper end of the ball body, at least two sealing grooves are formed in the middle of the valve rod, and the two sealing rubber rings are sleeved in the sealing grooves and abut against the inner wall of the valve body; the valve rod gasket is arranged at the lower end of the valve rod and abuts against the inner wall of the valve body; one valve sealing ring is sleeved at the left end of the ball body and abuts against the inner wall of the valve body, and the other valve sealing ring is sleeved at the right end of the ball body and abuts against the inner wall of the valve body;
install a jump ring, a retaining ring and a valve gap gasket in the valve gap, the valve rod outer end is located to the retaining ring cover to support at the valve body upper end, the retaining ring outer end is located to the valve gap gasket cover to support at valve gap inner wall and valve body upper end, the valve rod outer end is located to the jump ring cover to support at the retaining ring upper end.
Further, install a liquid feeding device on the valve body, liquid feeding device and valve body formula structure as an organic whole, the liquid feeding device includes a filling nozzle, a filling nozzle cap, a valve inside and sealed O type circle, the lower extreme of filling nozzle is fixed in on the valve body, the inner chamber at the filling nozzle is installed to the valve inside, the upper end of filling nozzle is located to the filling nozzle cap, sealed O type circle has still been set up between filling nozzle cap and the filling nozzle.
The invention has the beneficial effects that: 1. the invention uses a clamping and pressing tool (such as a clamping and pressing clamp) to carry out clamping and pressing connection, and a bell mouth (a clamping and pressing pipe fitting port) of the ball valve and an abutting pipe fitting are only connected by the clamping and pressing tool in a clamping and pressing way, open flame welding is not used, a certificate is not required to be welded, and the requirement on the specialty of a technician is not high;
2. according to the invention, the clamping and pressing tools are used for clamping and pressing connection, the bell mouth (the clamping and pressing pipe fitting port) of the ball valve is butted with the butted pipe fitting, open flame welding is not used, the risk of installation operation is reduced, and the safety is higher;
3. the invention enables the installation of the butt joint pipe fitting of the refrigeration system and the bell mouth of the ball valve to be quicker and more convenient, the operation is convenient, and the working efficiency is improved;
4. the valve body of the device is only welded with the clamping and pressing pipe fitting and is finished when leaving a factory, the device can be directly installed with an external butt joint pipe on a construction site without field welding, other transfer connecting pieces and other assembling pipe fittings are not needed, the valve body and the valve end clamping and pressing pipe fitting are of an integral structure, the integrity is better, the sealing effect is better, the strength is higher, and the device can bear a more severe use environment;
5. the clamping pressure pipe fitting is made of brass materials, and compared with a pipe fitting made of plastic or stainless steel materials, the clamping pressure pipe fitting has the characteristics of difficulty in aging and rusting, resistance to potential corrosion and durability;
6. the liquid feeding nozzle and the valve body are of an integrated structure, so that welding procedures are reduced, and the risk of leakage is reduced.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a schematic view of a snap-type ball valve of the overall structure of the present invention;
FIG. 2 is an exploded view of a snap ball valve of the overall construction of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;
FIG. 5 is a schematic view of the clamping deformation of the clamping pipe and the butt pipe according to the present invention;
fig. 6 is a schematic view of the internal structure of the valve body according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-valve body, 11-socket, 100-valve sealing ring, 101-valve rod, 102-sealing rubber ring, 103-valve rod gasket, 104-sphere, 105-snap spring, 106-check ring, 107-valve cover gasket, 108-valve cover, 109-connecting band, 12-liquid adding device, 121-liquid adding nozzle, 122-liquid adding nozzle cap, 123-valve core, 124-sealing O-ring, 2-clamping pipe fitting, 21-plug connector, 22-limiting boss, 23-welding ring, 3-valve end clamping pipe, 31-limiting step, 4-outer convex groove, 41-clamping sealing ring, 5-butt joint pipe, 51-clamping clamp and 52-clamping deformation point.
Detailed Description
Referring to fig. 1 to 6, the present invention provides a technical solution: a unitary snap-on ball valve comprising:
one end of the valve body 1 is provided with a socket 11, the other end of the valve body 1 is fixedly provided with a valve end clamping and pressing pipe 3, the valve end clamping and pressing pipe 3 and the valve body 1 are of an integral structure, and the valve end clamping and pressing pipe 3 is provided with an outer convex groove 4;
the clamping and pressing pipe fitting 2 is provided with a plug-in connector 21 at one end and a pipeline interface at the other end, an outer convex groove 4 is also arranged on the clamping and pressing pipe fitting, the plug-in connector 21 is inserted into the socket 11, and the plug-in connector 21 and the socket 11 are welded, sealed and fixed through full welding;
a clamping and pressing sealing ring 41 is arranged in each outer convex groove 4;
the outer convex groove 4 is an arc-shaped annular groove which is formed on the inner shaft walls of the valve end clamping pipe 3 and the clamping pipe fitting 2 and protrudes outwards, and the outer wall of the clamping sealing ring 41 is attached to the inner shaft wall of the outer convex groove 4; the clamping pressure sealing ring 41 is in interference fit with the externally inserted butt joint pipe 5, the device adopts more integrated structures, the structure is more stable, the pressure resistance is stronger, the welding position is reduced, the leakage probability is lower, more frequent temperature and pressure changes can be borne, and the integrity is stronger.
The clamping and pressing sealing ring 41 is an O-shaped rubber ring, can be made of chloroprene rubber, hydrogenated nitrile rubber and teflon materials instead according to the use environment, is very convenient to replace and install, and different materials can be selected after the working condition is checked on site;
the position, close to one side of the valve body 1, of the inner shaft wall of the clamping and pressing pipe fitting 2 is provided with a limiting boss 22 protruding inwards, the limiting boss 22 and the butt joint pipe 5 inserted externally are abutted against each other for limiting, the butt joint pipe 5 is convenient to insert, tightly position and install;
the valve end clamping pipe 3 is an integral structure formed by turning one end of the valve body 1, the integral structure is more stable, the sealing performance is stronger, and the pressure resistance and temperature difference resistance performance are better;
the position, close to one side of the valve body 1, of the inner shaft wall of the valve end clamping pipe 3 is provided with a limiting step 31 protruding inwards, the limiting step 31 and the externally inserted butt joint pipe 5 are abutted against each other for limiting, butt joint is facilitated, on-site measurement is not needed, only tight abutting is needed, installation in place can be guaranteed, and clamping and pressing fixation can be carried out;
the valve body 1 comprises a valve cover 108 and a connecting belt 109, the valve cover 108 is arranged on the top of the valve body 1 in a covering manner, two ends of the connecting belt 109 are respectively connected with the top of the valve cover 108 and the top of the valve body 1, two valve sealing rings 100 (made of polytetrafluoroethylene), a valve rod 101, at least two sealing rubber rings 102, a valve rod gasket 103 and a ball body 104 are arranged in the valve body 1, the lower end of the valve rod 101 is connected with the upper end of the ball body 104, at least two sealing grooves are formed in the middle of the valve rod 101, and the two sealing rubber rings 102 are sleeved in the sealing grooves and abut against the inner wall of the valve body 1; the valve rod gasket 103 is arranged at the lower end of the valve rod 101 in a cushioning manner and is abutted against the inner wall of the valve body 1; one valve sealing ring 100 is sleeved at the left end of the ball body 104 and abuts against the inner wall of the valve body 1, and the other valve sealing ring 100 is sleeved at the right end of the ball body 104 and abuts against the inner wall of the valve body 1;
a clamp spring 105, a check ring 106 and a bonnet gasket 107 are installed in the bonnet 108, the check ring 106 is sleeved at the outer end of the valve rod 101 and abuts against the upper end of the valve body 1, the bonnet gasket 107 is sleeved at the outer end of the check ring 106 and abuts against the inner wall of the bonnet 108 and the upper end of the valve body 1, the clamp spring 105 is sleeved at the outer end of the valve rod 1 and abuts against the upper end of the check ring 106, manufacturing and maintenance are more convenient, the welded valve body 1 is not used, and the integral structure is more stable;
install a liquid feeding device 12 on the valve body 1, liquid feeding device 12 and valve body formula structure as an organic whole, the liquid feeding device includes a filling nozzle 121, a filling nozzle cap 122, a valve inside 123 and sealed O type circle 124, the lower extreme of filling nozzle 121 is fixed in on the valve body 1, the inner chamber at filling nozzle 121 is installed to valve inside 123, filling nozzle cap 122 lid is located the upper end of filling nozzle 121, still set up sealed O type circle 124 between filling nozzle cap 122 and the filling nozzle 121, still less use the welding, and used the mode of capping, do not use the naked light welding, reduce prefabricated time, it is also more convenient to change.
In one embodiment of the invention:
the embodiment of the invention provides a clamping and pressing type ball valve with an integral structure, and the technical problem solved by the invention is as follows: the ball valve has a plurality of service conditions due to different service environments and fluid objects of the ball valve, the ball valve used at present is generally used at normal temperature and normal pressure, however, when the ball valve is needed to be used by refrigerant liquid, the temperature can be frequently changed, so that a plurality of ball valves with more welding gaps can not be sufficient, the service life of the ball valve is greatly reduced under the condition that the environmental temperature is frequently changed and the pressure is also changed for a long time, the connecting welding seam of a pipeline is easy to become brittle in the temperature change, and the brittle welding spots can be directly leaked due to the pressure change;
the realized technical effects are as follows: the device has the advantages that the number of welding points is small, the field installation is simple, the welded ball valve is not needed during field installation and construction, the device can be suitable for frequent temperature change, can bear the refrigerating environment with frequently changed pressure, and can also be suitable for common fluid environments and more severe working conditions.
In order to solve the above problems, the technical solution in the embodiments of the present invention has the following general idea:
for better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments.
When the invention is manufactured, the adhesive tape is coated with the adhesive,
1. manufacturing a ball valve main body by a forging method: blanks of the valve cover 108, the valve body 1, etc.; then, obtaining the size of a qualified product through turning of a numerical control lathe; the structure of the liquid adding device 12 is different from that of a common welding type liquid adding device in the market, and the liquid adding device is specially manufactured into a whole, so that the turning difficulty is increased, the cost is saved, and the welding process is reduced;
2. the liquid filling nozzle 121, the liquid filling nozzle cap 122, the valve core 123 and the sealing O-shaped ring 124 are assembled, and the structure is shown in FIG. 6;
valve accessories are purchased according to the drawing: such as a valve rod 101, a ball body 104, a valve body sealing ring 100, a sealing rubber ring 102, a clamping and pressing sealing ring 41 and the like, and confirming that the feeding inspection is qualified;
3. a valve end clamping and pressing pipe 3 is turned at the right end of the valve body 1, the valve end clamping and pressing pipe 3 is a valve end clamping and pressing pipe 3 which is of an integral structure with the brass valve body 1, the length of the valve end clamping and pressing pipe 3 needs to be ensured that the exposed length of the valve end clamping and pressing pipe 3 is not less than 10mm, the valve end clamping and pressing pipe is directly turned on the right side of the valve body 1 and used for ensuring the sealing effect after clamping and pressing, and meanwhile, an outer convex groove 4 is turned on the inner wall of the middle section of the valve end clamping and pressing pipe 3;
4. the special clamping and pressing pipe fitting 2 is manufactured in advance through a pipe forming process, an outer convex groove 4 is turned, the left end of the outer convex groove is provided with a bulge bell mouth structure provided with a clamping and pressing sealing ring 41, the clamping and pressing sealing ring 41 is arranged in all the outer convex grooves 4, and a standard butt joint pipe which is butted with the clamping and pressing pipe fitting can be clamped and pressed into a whole to be fixedly locked through a specially-made clamping and pressing tool, namely a clamping and pressing clamp 51 as shown in figure 5; the right end is provided with a plug-in connector 21 which is welded with the valve body 1;
5. after the valve rod 101, the sealing rubber ring 102 and the valve rod gasket 103 are sequentially assembled, the valve rod, the sealing rubber ring and the valve rod gasket are installed in the valve body 1;
6. respectively installing a valve body sealing ring 100 and a ball body 104 on the inner wall of the clamping and pressing pipe fitting 2 and the inner wall of the valve body 1;
7. installing the check ring 106 and the clamp spring 105 into the valve rod 101;
8. the external thread of the plug 21 of the clamping and pressing pipe fitting 2 is screwed into the bell mouth of the internal thread socket 11 at the left end of the valve body 1, so that the coaxiality of the clamping and pressing pipe fitting 2 and the bell mouth of the valve body 1 during welding is ensured. The adjustable torque wrench is used for adjusting the required torque value to screw the clamping and pressing pipe fitting 2, then the clamping and pressing pipe fitting is placed on a clamping tool in the girth welding machine, and a nitrogen-filled protective cover is arranged in the clamping and pressing tool to prevent the oxidation and color change of the inner surface and the outer surface of the ball valve in the welding process. The valve body 1 and the clamping and pressing pipe fitting 2 are welded into a whole in an automatic welding flux feeding mode of a wire feeder, and meanwhile, a welding seam 23 is formed between the valve body 1 and the clamping and pressing pipe fitting 2, so that the valve body 1 is ensured not to leak under a high-pressure fluid environment;
9. the valve cover gasket 107 is arranged in the valve cover 108, and the small end of the connecting belt 109 (plastic belt) is sleeved on the top end of the valve cover 108;
10. the large end of the connecting band 109 is sleeved into the lower end of the external thread of the valve body 1, and then the valve cover 108 is screwed tightly, so that the installation is completed.
When the invention is installed on site, after the valve body 1 and the clamping and pressing pipe fitting 2 are welded and assembled, the product delivered from the factory is an integral structure, when the valve body is installed on site, the clamping and pressing sealing rings 41 with proper sizes are firstly ensured to be installed in the outer convex grooves 4 at two ends, then the butt joint pipe 5 is inserted into the clamping and pressing pipe fitting 2 to ensure that the butt joint pipe is abutted against the limiting boss 22, then the clamping and pressing pliers 51 are sleeved outside the clamping and pressing pipe fitting 2 and wrap the outer convex grooves 4 as shown in figure 5, then a clamping and pressing tool such as the clamping and pressing pliers 51 is adopted to inwards clamp and press the outer shaft wall of the clamping and pressing pipe fitting 2, so that the clamping and pressing pipe fitting 2 is deformed to form a hexagonal and other polygonal section, and the section can prevent the butt joint pipe fitting 5 from rotating relative to the clamping and; the inner shaft wall of the clamping and pressing pipe fitting 2 and the outer shaft wall of the butt joint pipe 5 inserted into the clamping and pressing pipe fitting 2 generate a plurality of clamping and pressing deformation points 52 due to clamping and pressing, the clamping and pressing deformation points 52 are distributed on two sides of the outer convex groove 4, and the clamping and pressing deformation points 52 enable the butt joint pipe 5 to form a bell mouth-shaped structure at the clamping and pressing position, so that the structure can prevent the butt joint pipe 5 from being pulled out or fluid in the pipe from being extruded; the clamping pressure sealing ring 41 can deform under the action of the clamping pressure deformation point 52, so that the clamping pressure pipe fitting 2 has better sealing property when being clamped and connected with the butt joint pipe 5, the situations of unstable connection and the like caused by different internal and external air pressures due to the existence of gaps are avoided, and the structural strength is enhanced; the number of the clamping pressure deformation points 52 can be selected according to actual conditions.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.

Claims (7)

1. The utility model provides a block pressure formula ball valve of overall structure which characterized in that includes:
the valve comprises a valve body (1), wherein one end of the valve body is provided with a socket (11), the other end of the valve body is fixedly provided with a valve end clamping pipe (3), the valve end clamping pipe (3) and the valve body (1) are of an integral structure, and the valve end clamping pipe (3) is provided with an outer convex groove (4);
the pipe clamping and pressing device comprises a clamping and pressing pipe (2), wherein one end of the clamping and pressing pipe is provided with a plug-in connector (21), the other end of the clamping and pressing pipe is provided with a pipeline interface, an outer convex groove (4) is also formed in the clamping and pressing pipe, the plug-in connector (21) is inserted into a socket (11), and the plug-in connector (21) and the socket (11) are welded, sealed and fixed through all-welding;
a clamping and pressing sealing ring (41) is arranged in each outer convex groove (4);
the outer convex groove (4) is an arc-shaped annular groove which is formed in the inner shaft walls of the valve end clamping pipe (3) and the clamping pipe fitting (2) and protrudes outwards, and the outer wall of the clamping sealing ring (41) is attached to the inner shaft wall of the outer convex groove (4); the clamping and pressing sealing ring (41) is in interference fit with the externally inserted butt joint pipe (5).
2. The unitary snap-on ball valve of claim 1, further comprising: the clamping and pressing sealing ring (41) is an O-shaped rubber ring.
3. The unitary snap-on ball valve of claim 1, further comprising: the position that the axle wall was pressed to valve body (1) one side to the card pressure pipe fitting (2) inner shaft wall is provided with inside bellied spacing boss (22), spacing boss (22) support each other with external inserted butt joint pipe (5) and lean on spacingly.
4. The unitary snap-on ball valve of claim 1, further comprising: the valve end clamping pipe (3) is of an integral structure formed by turning one end of the valve body (1).
5. The unitary snap-on ball valve of claim 4, wherein: the valve is characterized in that a limiting step (31) protruding inwards is arranged at a position, close to one side of the valve body (1), of the inner shaft wall of the valve end clamping pipe (3), and the limiting step (31) and the butt joint pipe (5) inserted externally abut against each other for limiting.
6. The unitary snap-on ball valve of claim 1, further comprising: the valve body (1) comprises a valve cover (108) and a connecting belt (109), the valve cover (108) is arranged at the top of the valve body (1) in a covering mode, the two ends of the connecting belt (109) are respectively connected with the top of the valve cover (108) and the neck of the valve body (1), two valve sealing rings (100), a valve rod (101), at least two sealing rubber rings (102), a valve rod gasket (103) and a ball body (104) are arranged in the valve body (1), the lower end of the valve rod (101) is connected with the upper end of the ball body (104), at least two sealing grooves are formed in the middle of the valve rod (101), and the two sealing rubber rings (102) are sleeved in the sealing grooves and abut against the inner wall of the valve body (1); the valve rod gasket (103) is arranged at the lower end of the valve rod (101) in a cushioning mode and abuts against the inner wall of the valve body (1); one valve sealing ring (100) is sleeved at the left end of the ball body (104) and is propped against the inner wall of the valve body (1), and the other valve sealing ring (100) is sleeved at the right end of the ball body (104) and is propped against the inner wall of the valve body (1);
install a jump ring (105), a retaining ring (106) and a valve gap gasket (107) in valve gap (108), valve rod (101) outer end is located to retaining ring (106) cover to support in valve body (1) upper end, retaining ring (106) outer end is located to valve gap gasket (107) cover, and supports in valve gap (108) inner wall and valve body (1) upper end, valve rod (1) outer end is located to jump ring (105) cover, and supports in retaining ring (106) upper end.
7. The unitary snap-on ball valve of claim 6, further comprising: install a liquid feeding device (12) on valve body (1), liquid feeding device (12) and valve body formula structure as an organic whole, the liquid feeding device includes one with liquid nozzle (121), one with liquid nozzle cap (122), a valve inside (123) and sealed O type circle (124), the lower extreme of liquid nozzle (121) is fixed in on valve body (1), the inner chamber at liquid nozzle (121) is installed in valve inside (123), the upper end of liquid nozzle (121) is located in liquid nozzle cap (122) lid, sealed O type circle (124) have still been set up between liquid nozzle cap (122) and the liquid nozzle (121).
CN202011023492.8A 2019-12-17 2020-09-25 Integral structure's card pressure formula ball valve Pending CN112081943A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2019113006117 2019-12-17
CN201911300611.7A CN111075946A (en) 2019-12-17 2019-12-17 Clamping and pressing type ball valve for refrigeration

Publications (1)

Publication Number Publication Date
CN112081943A true CN112081943A (en) 2020-12-15

Family

ID=70314945

Family Applications (3)

Application Number Title Priority Date Filing Date
CN201911300611.7A Pending CN111075946A (en) 2019-12-17 2019-12-17 Clamping and pressing type ball valve for refrigeration
CN202011021530.6A Pending CN112081942A (en) 2019-12-17 2020-09-25 Clamping and pressing type ball valve for refrigeration
CN202011023492.8A Pending CN112081943A (en) 2019-12-17 2020-09-25 Integral structure's card pressure formula ball valve

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CN201911300611.7A Pending CN111075946A (en) 2019-12-17 2019-12-17 Clamping and pressing type ball valve for refrigeration
CN202011021530.6A Pending CN112081942A (en) 2019-12-17 2020-09-25 Clamping and pressing type ball valve for refrigeration

Country Status (1)

Country Link
CN (3) CN111075946A (en)

Also Published As

Publication number Publication date
CN111075946A (en) 2020-04-28
CN112081942A (en) 2020-12-15

Similar Documents

Publication Publication Date Title
DK3027948T3 (en) PRESSURE FITTING FOR WIRING CONNECTION AND PROCEDURE FOR DETERMINING A FITTING ON A WIRING CONNECTION
CN102913698A (en) Plumbing Adaptor Fitting
CA2808317C (en) Weldless aluminum based hvac system and method of making
RU2556944C2 (en) Fitting for pipes connection, in particular flexible pipes
US10036495B2 (en) Coupling using sealant for sealing secured components
RU2388961C1 (en) Method of protasov vn for bush internal anticorrosive protection of welded joints of knee-pipe parts with internal anticorrosive coating
CN212616475U (en) Integral structure's card pressure formula ball valve
CN112081943A (en) Integral structure's card pressure formula ball valve
JP2007292128A (en) Joining member for pipe joint
CN213206837U (en) Sliding extrusion type ball valve with integral structure
CN203784518U (en) Flexible brake hose for water conservancy machinery for farmland
CN112082013A (en) Sliding extrusion type ball valve with integral structure
CN108150746A (en) Pipe jointer sealing ring
CN108930855B (en) Hydraulic pipeline flexible connection structure and method suitable for compact space
RU91130U1 (en) METAL FITTING CONNECTION ASSEMBLY WITH POLYPROPYLENE PIPE AND PARTS KIT FOR ITS ASSEMBLY
CN101649936B (en) Pipe connector
CN110925502B (en) Metal hose with good installation tightness
CN219045591U (en) Front valve of clamp-press running water meter
CN211475133U (en) Gas pressure regulating station pipeline connection structure and gas pressure regulating station
CN110005883B (en) Method for connecting gas pipeline without firing
CN220566831U (en) Pressure vessel and detachable nut's loop joint
CN219282480U (en) Quick ball valve of card pressure
CN217539959U (en) Clamping-pressing type connecting pipe fitting and pipeline system
CN218644982U (en) Underwater quick joint
CN213089029U (en) Double-sealing three-piece gas pipe joint structure

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination