CN112081942A - Clamping and pressing type ball valve for refrigeration - Google Patents

Clamping and pressing type ball valve for refrigeration Download PDF

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Publication number
CN112081942A
CN112081942A CN202011021530.6A CN202011021530A CN112081942A CN 112081942 A CN112081942 A CN 112081942A CN 202011021530 A CN202011021530 A CN 202011021530A CN 112081942 A CN112081942 A CN 112081942A
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CN
China
Prior art keywords
clamping
valve
pressing
pipe fitting
valve body
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
CN202011021530.6A
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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 CN112081942A publication Critical patent/CN112081942A/en
Pending legal-status Critical Current

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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
    • 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

Abstract

The invention provides a clamping and pressing type ball valve for refrigeration, which comprises a valve body, a valve cover, a connecting band and a valve side cover, wherein a valve rod, a first sealing ring, a valve rod gasket, a ball body and a second sealing ring are arranged in the valve body; the valve rod gasket is arranged at the lower end of the valve rod; the second sealing rings are sleeved at the two ends of the ball body; a clamp spring, a check ring and a valve cover gasket are arranged in the valve cover, the check ring is sleeved outside the valve rod, the valve cover gasket is sleeved outside the check ring, and the clamp spring is sleeved outside the valve rod; the outer end of the valve side cover and the other end of the valve body are provided with spigots, and clamping and pressing pipe fittings are inserted into the spigots; the clamping and pressing pipe fitting comprises a clamping and pressing end and an inserting end, the inserting end is inserted into the socket, the clamping and pressing end is provided with an outward convex groove, a third sealing ring is arranged in the outward convex groove, and a limiting step is arranged at the position, close to the middle part, of the clamping and pressing end; the clamping and pressing end is connected with the butt joint pipe fitting in a clamping and pressing mode. The invention has convenient operation and is safer.

Description

Clamping and pressing type ball valve for refrigeration
Technical Field
The invention relates to a refrigeration valve, in particular to a clamping and pressing type ball valve for refrigeration.
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.
In order to avoid using open flame welding process in the installation process of the ball valve, reduce the risk during operation and improve the working efficiency, the clamping and pressing type ball valve for refrigeration is introduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a clamping and pressing type ball valve for refrigeration, which is convenient to operate and safer.
The invention is realized by the following steps:
a clamping and pressing type ball valve for refrigeration comprises a valve body, a valve cover, a connecting belt and a valve side cover, wherein the valve cover is arranged at the upper end of the valve body, two ends of the connecting belt are respectively connected with the top of the valve cover and the upper end of the valve body, and the valve side cover is communicated with one end of the valve body;
a valve rod, at least one first sealing ring, a valve rod gasket, a ball body and two second sealing rings 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 one sealing groove is formed in the middle of the valve rod, and the first sealing ring is sleeved in the sealing groove and abuts 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 second sealing ring is sleeved at the left end of the ball body and abuts against the inner end wall of the valve side cover, and the other second sealing ring is sleeved at the right end of the ball body and abuts against the inner end wall of the valve body;
a clamp spring, a check ring and a valve cover gasket are arranged in the valve cover, the check ring is sleeved at the outer end of the valve rod and abuts against the upper end of the valve body, the valve cover gasket is sleeved at the outer end of the check ring and abuts against the inner wall of the valve cover and the upper end of the valve body, and the clamp spring is sleeved at the outer end of the valve rod and abuts against the upper end of the check ring;
the outer end of the valve side cover and the other end of the valve body are respectively provided with a socket, and a clamping and pressing pipe fitting is inserted into each socket; each clamping and pressing pipe fitting comprises a clamping and pressing structure and an inserting end, the inserting end is inserted into the inserting opening, the clamping and pressing structure is arranged on at least one end of the clamping and pressing pipe fitting, the clamping and pressing structure comprises a clamping and pressing end, and the clamping and pressing end is coaxially arranged on the end of the clamping and pressing pipe fitting; an outer shaft wall in the middle of the clamping and pressing end is provided with an arc-shaped outwards protruding groove, a third sealing ring is arranged in the outwards protruding groove, and the outer wall of the third sealing ring is attached to an inner shaft wall of the outwards protruding groove; a limiting step protruding inwards is arranged at the position, close to the middle of the clamping and pressing pipe fitting, of the inner shaft wall of the clamping and pressing end; the clamping and pressing end is used for being connected with a butt joint pipe fitting inserted into the clamping and pressing end from the outside through a clamping and pressing process.
Furthermore, when the clamping and pressing pipe fitting is of a two-way structure and the included angle of two ends of the clamping and pressing pipe fitting is 180 degrees, one end of the clamping and pressing pipe fitting is provided with the clamping and pressing structure, and the other end of the clamping and pressing pipe fitting is provided with the inserting end; if the pipe diameters at the two ends are different, a variable-diameter connecting pipe fitting is arranged between the clamping and pressing structure and the inserting end, and the clamping and pressing structure and the inserting end are connected through the variable-diameter connecting pipe fitting.
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 liquid feeding mouth, a liquid feeding mouth cap, a valve inside and a fourth sealing washer, the lower extreme of liquid feeding mouth is fixed in on the valve body, the inner chamber at the liquid feeding mouth is installed to the valve inside, the upper end at the liquid feeding mouth is located to the liquid feeding mouth cap, the fourth sealing washer is located between liquid feeding mouth cap and the liquid feeding mouth.
Further, the clamping and pressing pipe fitting is a clamping and pressing red copper pipe fitting.
Further, the connecting belt is a rubber belt.
Furthermore, the inner wall of the tail end of the insertion opening and the outer wall of the clamping and pressing pipe fitting are welded into a whole.
Furthermore, the valve side cover and the outer end of the valve body are welded into a whole.
Further, the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are all O-shaped sealing rings.
The invention has the advantages 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. when the clamping and pressing pipe fitting is of a two-way structure, the pipe diameters at two ends can be different from each other, and the included angle between the two ends is 180 degrees, so that the clamping and pressing pipe fitting can be used for connecting butt joint pipe fittings with relatively complex structures, such as: butt joint pipe fittings with different pipe diameters can be connected, the whole structure is various, and market requirements can be well met;
5. the clamping pressure pipe fitting is made of red copper 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 an overall structure of a snap-type ball valve for refrigeration according to the present invention.
Fig. 2 is an exploded view of a snap ball valve for refrigeration according to the present invention.
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1 according to the present invention.
Fig. 4 is a sectional view taken along line B-B of fig. 1 according to the present invention.
Fig. 5 is a schematic structural view of a clamping and pressing pipe according to a first embodiment of the invention.
FIG. 6 is a schematic view of the clamping structure of the clamping and pressing pipe fitting and the abutting pipe fitting of the present invention.
The reference numbers in the figures illustrate:
10-a valve body, 11-a valve rod, 12-a first sealing ring, 13-a valve rod gasket, 14-a ball, 15-a second sealing ring, 16-a sealing groove, 17-a liquid adding device, 171-a liquid adding nozzle, 172-a liquid adding nozzle cap, 173-a valve core, 174-a fourth sealing ring, 20-a valve cover, 21-a snap spring, 22-a retainer ring and 23-a valve cover gasket, 30-connecting band, 40-valve side cover, 41-socket, 42-welding ring, 43-welding wire, 50-clamping and pressing pipe fitting, 50 a-clamping and pressing structure, 51-clamping and pressing end, 511-outer convex groove, 512-third sealing ring, 52-inserting end, 53-variable diameter connecting pipe fitting, 60-butt joint pipe fitting, 70-clamping and pressing pliers and 71-clamping and pressing occlusion part.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the structure of the present invention is not limited to the following examples.
Referring to fig. 1 to 6, the clamping and pressing type ball valve for refrigeration of the present invention includes a valve body 10, a valve cover 20, a connecting band 30 and a valve side cover 40, wherein the valve cover 20 covers the upper end of the valve body 10, two ends of the connecting band 30 are respectively connected to the top of the valve cover 20 and the upper end of the valve body 10, and the valve side cover 40 is communicated with one end of the valve body 10;
a valve rod 11, at least one first seal ring 12 (in this embodiment, the number of the first seal rings 12 is two, and three, four, etc. may also be adopted), a valve rod gasket 13, a ball 14, and two second seal rings 15 are installed in the valve body 10, the lower end of the valve rod 11 is connected with the upper end of the ball 14, at least one seal groove 16 is arranged in the middle of the valve rod 11, the seal groove 16 is an O-shaped seal groove, and the first seal ring 12 is sleeved in the seal groove 16 and abuts against the inner wall of the valve body 10; the valve rod gasket 13 is arranged at the lower end of the valve rod 11 in a cushioning mode and is abutted against the inner wall of the valve body 10, and the sealing performance of the valve rod 11 in the valve body 10 is improved through the first sealing ring 12 and the valve rod gasket 13; one second sealing ring 15 is sleeved at the left end of the ball body 14 and abuts against the inner end wall of the valve side cover 40, the other second sealing ring 15 is sleeved at the right end of the ball body 14 and abuts against the inner end wall of the valve body 10, and the sealing performance of the ball body 14 in the valve body 10 is improved while the rotation function of the ball body 14 is ensured through the second sealing ring 15, so that the opening and closing functions of the ball valve are not influenced;
a clamp spring 21, a check ring 22 and a bonnet gasket 23 are installed in the bonnet 20, the check ring 22 is sleeved at the outer end of the valve rod 11 and abuts against the upper end of the valve body 10, the bonnet gasket 23 is sleeved at the outer end of the check ring 22 and abuts against the inner wall of the bonnet 20 and the upper end of the valve body 10, the clamp spring 21 is sleeved at the outer end of the valve rod 11 and abuts against the upper end of the check ring 22, and the clamp spring 21, the check ring 22 and the bonnet gasket 23 are used for fastening the bonnet 20, the valve body 10 and the valve rod 11 and limiting the rotation of 90 degrees;
the outer end of the valve side cover 40 and the other end of the valve body 10 are both provided with a socket 41, and a clamping and pressing pipe fitting 50 is inserted into each socket; each clamping and pressing pipe fitting 50 comprises a clamping and pressing structure 50a and an inserting end 52, the inserting end 52 is inserted into the inserting hole 41, the clamping and pressing structure 50a is arranged on at least one end part of the clamping and pressing pipe fitting 50, the clamping and pressing structure 50a comprises a clamping and pressing end 51, and the clamping and pressing end 51 is coaxially arranged on the end part of the clamping and pressing pipe fitting 50; an arc-shaped outward convex groove 511 which protrudes outward is formed in the outer shaft wall of the middle of the clamping and pressing end 51, a third sealing ring 512 is arranged in the outward convex groove 511, the outer wall of the third sealing ring 512 is attached to the inner shaft wall of the outward convex groove 511, and the third sealing ring 512 plays a role in ensuring connection sealing performance; the diameters of the clamping end 51 and the inserting end 52 are changed, so that a variable-diameter connecting pipe fitting 53 is arranged between the clamping end 51 and the inserting end 52, and the variable-diameter connecting pipe fitting 53 plays a role in quick positioning when an external operator inserts components such as the butting pipe fitting 60 into the clamping end 51, so that the external operator can conveniently and quickly insert the components such as the butting pipe fitting 60 without calculating the proper length to insert; the clamping end 51 is used for being connected with a butt joint pipe piece 60 inserted into the clamping end 51 from the outside through a clamping process.
Preferably, a liquid adding device 17 is installed on the valve body 10, the liquid adding device 17 and the valve body 10 are of an integrated structure, the integrated structure is adopted, the welding process of welding the liquid adding device 17 on the clamping pipe fitting 50 is reduced, and the risk of leakage is reduced, the liquid adding device 17 comprises a liquid adding nozzle 171, a nozzle cap 172, a valve core 173 and a fourth sealing ring 174, the lower end of the liquid adding nozzle 171 is fixed on the valve body 10, the valve core 173 is installed in the inner cavity of the liquid adding nozzle 171, the nozzle cap 172 is covered on the upper end of the liquid adding nozzle 171, the nozzle cap 172 is connected with the liquid adding nozzle 17 in a threaded manner, and the fourth sealing ring 174 is arranged between the nozzle cap 172 and the liquid adding nozzle 171; the lower end of the liquid adding nozzle 171 is of a hexagonal edge structure, and the liquid adding nozzle is convenient to install a pipeline and is used in a connecting mode.
Preferably, the clamping tube 50 is a clamping red copper tube made of red copper material, and has the characteristics of being difficult to age, rust, withstand potential corrosion and durable compared with a tube made of plastic or stainless steel material.
Preferably, the connection belt 30 is a rubber belt, which has good wear resistance, high elasticity, high tensile strength at break and high elongation.
Preferably, the inner wall of the end of the insertion opening 41 and the outer wall of the clamping pipe 50 are welded together, the welding ring 42 is inserted into the insertion opening 41 of the valve body 10 and the valve side cover 40, and the welding ring 42 is welded with high frequency by using a high frequency welding process so as to weld the clamping pipe 50 with the valve body 10 and the valve side cover 40, thereby ensuring the sealing performance between the valve side cover 40 and the valve body 10 with the clamping pipe 50.
Preferably, the side cover 40 and the outer end of the valve body 10 are welded together, a welding wire 43 (using brass wire as filler) is inserted between the side cover 40 and the valve body 10, and the welding wire 43 is spot-welded by a spin welding process to weld the side cover 40 and the valve body 10, so as to ensure the sealing property between the side cover 40 and the valve body 10.
Preferably, the first seal ring 12, the second seal ring 15, the third seal ring 512 and the fourth seal ring 174 are all O-shaped seal rings, so that the installation is convenient; according to the application requirements of different parts, the rubber is respectively made of chloroprene rubber, hydrogenated nitrile rubber and teflon materials of international brands, and has the characteristics of good high and low temperature resistance, weather resistance, refrigerant resistance, corrosion resistance, aging resistance, freezing oil resistance and the like.
Preferably, the clamping and pressing pipe 50 is a two-way structure, and an included angle between two ends of the clamping and pressing pipe is 90-180 °.
The installation process of the invention is as follows:
1. manufacturing a ball valve main body by a forging method: blanks of the valve cover 20, the valve body 10, the valve side cover 40, and the like; then, obtaining the size of a qualified product through turning of a numerical control lathe; the structure of the liquid adding device 17 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. valve accessories are purchased according to the drawing: such as a valve rod 11, a ball 14, a first sealing ring 12, a second sealing ring 15, a third sealing ring 512 and the like, and confirming that the feeding inspection is qualified;
3. the special clamping and pressing pipe fitting 50 is manufactured through a pipe forming process, one end of the special clamping and pressing pipe fitting is of a bulge bell mouth structure provided with a third sealing ring 512, a standard pipe clamp butted with the special clamping and pressing pipe fitting can be pressed into a whole through a special clamping and pressing tool, the other end of the special clamping and pressing pipe fitting is a socket 41 in socket welding with the brass valve body 10, and the length of the special clamping and pressing pipe fitting needs to ensure that the exposed length after the special clamping and pressing pipe fitting is inserted into the brass valve body 10 is not less than 10mm, so that the special clamping and pressing pipe fitting is indirectly ensured to have enough space for welding, the material;
4. sleeving a welding ring 42 with a corresponding specification at the insertion pipe of the clamping and pressing pipe 50, inserting the clamping and pressing pipe into the bell mouth of the valve body 10, ensuring that the single-side gap between the clamping and pressing pipe and the bell mouth of the valve body 10 is within 0.1-0.2 mm, then placing the clamping and pressing pipe in a high-frequency welding tool to ensure the coaxiality of the clamping and pressing pipe 50 and the bell mouth of the valve body 10 during welding, adjusting the power and the heating time of a high-frequency welding machine to ensure that the welding ring 42 is fully filled in a welding seam on the premise of not;
5. similarly, the clamping and pressing pipe 50 is welded into the valve side cover 40;
6. the second sealing ring 15 and the ball 14 are respectively arranged in the valve body 10 and the valve side cover 40;
7. after the valve rod 11, the first sealing ring 12 and the valve rod gasket 13 are sequentially assembled, the valve rod and the ball 14 are assembled into the valve body 10, and the valve side cover 40 is screwed in and screwed down;
8. the retainer ring 22 and the clamp spring 21 are arranged in the valve rod 11;
9. the screwed valve body 10 is arranged on a rotatable automatic wire feeder, and the groove between the valve body 10 and the valve side cover 40 is welded into a whole in an automatic solder feeding mode of the wire feeder to form a welding wire 43, so that the valve body 10 can be prevented from leaking under the high-pressure fluid environment;
10. the valve cover gasket 23 is arranged in the valve cover 20, and the small end of the connecting belt 30 (rubber belt) is sleeved on the top end of the valve cover 20;
11. and sleeving the large end of the connecting band 30 into the lower end of the external thread of the valve body 10, and screwing the valve cover 20 to finish the installation.
When the clamping and pressing process is performed, the butt pipe fitting 60 is firstly inserted into the clamping and pressing end 51 of the clamping and pressing pipe fitting 50 until the butt pipe fitting 60 is in contact with the variable-diameter connecting pipe fitting 53 and cannot be inserted, then a clamping and pressing tool such as a clamping and pressing pliers 70 is used for clamping and pressing the outer wall of the clamping and pressing end 51 inwards, so that the clamping and pressing end 51 is deformed to form polygonal cross sections such as a hexagon, and the cross sections can prevent the butt pipe fitting 60 from rotating relative to the clamping and pressing end 51; the inner shaft wall of the clamping end 51 and the outer shaft wall of the butt joint pipe fitting 60 inserted into the clamping end generate a plurality of clamping and pressing occlusion parts 71 due to clamping and pressing, the clamping and pressing occlusion parts 71 are distributed at two sides of the outer convex groove 511, and the clamping and pressing occlusion parts 71 enable the butt joint pipe fitting 60 to form a bell mouth-shaped structure at the clamping and pressing part, so that the butt joint pipe fitting 60 can be prevented from being pulled out or fluid in the pipe can be prevented from being extruded out; the third sealing ring 512 is deformed under the action of the clamping and pressing engagement part 71, so that the clamping and pressing end 51 has better sealing performance when being clamped and pressed and connected with the butt joint pipe fitting 60, 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 snap-fit joints 71 can be selected according to the actual situation.
The first embodiment is as follows:
as shown in fig. 5, when the clamping and pressing pipe 50 is of a two-way structure and an included angle between two ends of the clamping and pressing pipe is 180 °, one end of the clamping and pressing pipe 50 is provided with a clamping and pressing structure 50a, and the other end is provided with the insertion end 52; if the pipe diameters at the two ends are different, a variable-diameter connecting pipe fitting 53 is arranged between the clamping and pressing structure 50a and the inserting end 52, the clamping and pressing structure 50a and the inserting end 52 are connected through the variable-diameter connecting pipe fitting 53, so that clamping and pressing connection can be carried out between the clamping and pressing pipe fittings 50 with two different pipe diameters, and practicability is increased.
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 (8)

1. The utility model provides a refrigeration is with card pressure formula ball valve which characterized in that: the valve cover is arranged at the upper end of the valve body, two ends of the connecting band are respectively connected with the top of the valve cover and the upper end of the valve body, and the valve side cover is communicated with one end of the valve body;
a valve rod, at least one first sealing ring, a valve rod gasket, a ball body and two second sealing rings 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 one sealing groove is formed in the middle of the valve rod, and the first sealing ring is sleeved in the sealing groove and abuts 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 second sealing ring is sleeved at the left end of the ball body and abuts against the inner end wall of the valve side cover, and the other second sealing ring is sleeved at the right end of the ball body and abuts against the inner end wall of the valve body;
a clamp spring, a check ring and a valve cover gasket are arranged in the valve cover, the check ring is sleeved at the outer end of the valve rod and abuts against the upper end of the valve body, the valve cover gasket is sleeved at the outer end of the check ring and abuts against the inner wall of the valve cover and the upper end of the valve body, and the clamp spring is sleeved at the outer end of the valve rod and abuts against the upper end of the check ring;
the outer end of the valve side cover and the other end of the valve body are respectively provided with a socket, and a clamping and pressing pipe fitting is inserted into each socket; each clamping and pressing pipe fitting comprises a clamping and pressing structure and an inserting end, the inserting end is inserted into the inserting opening, the clamping and pressing structure is arranged on at least one end of the clamping and pressing pipe fitting, the clamping and pressing structure comprises a clamping and pressing end, and the clamping and pressing end is coaxially arranged on the end of the clamping and pressing pipe fitting; an outer shaft wall in the middle of the clamping and pressing end is provided with an arc-shaped outwards protruding groove, a third sealing ring is arranged in the outwards protruding groove, and the outer wall of the third sealing ring is attached to an inner shaft wall of the outwards protruding groove; a limiting step protruding inwards is arranged at the position, close to the middle of the clamping and pressing pipe fitting, of the inner shaft wall of the clamping and pressing end; the clamping and pressing end is used for being connected with a butt joint pipe fitting inserted into the clamping and pressing end from the outside through a clamping and pressing process.
2. The snap-type ball valve for refrigeration of claim 1, wherein: the clamping and pressing pipe fitting is of a two-way structure, and when an included angle between two ends of the clamping and pressing pipe fitting is 180 degrees, one end of the clamping and pressing pipe fitting is provided with the clamping and pressing structure, and the other end of the clamping and pressing pipe fitting is provided with the inserting end; if the pipe diameters at the two ends are different, a variable-diameter connecting pipe fitting is arranged between the clamping and pressing structure and the inserting end, and the clamping and pressing structure and the inserting end are connected through the variable-diameter connecting pipe fitting.
3. The snap-type ball valve for refrigeration of claim 1, wherein: 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 one with liquid nozzle, a liquid feeding nozzle cap, a valve core and a fourth sealing washer, the lower extreme of liquid feeding nozzle is fixed in on the valve body, the inner chamber at liquid feeding nozzle is installed to the valve core, the upper end of liquid feeding nozzle is located to the liquid feeding nozzle cap, the fourth sealing washer is located between liquid feeding nozzle cap and the liquid feeding nozzle.
4. The snap-type ball valve for refrigeration of claim 1, wherein: the clamping and pressing pipe fitting is a clamping and pressing red copper pipe fitting.
5. The snap-type ball valve for refrigeration of claim 1, wherein: the connecting belt is a rubber belt.
6. The snap-type ball valve for refrigeration of claim 1, wherein: the inner wall of the tail end of the insertion opening and the outer wall of the clamping and pressing pipe fitting are welded into a whole.
7. The snap-type ball valve for refrigeration of claim 1, wherein: the valve side cover and the outer end of the valve body are welded into a whole.
8. The snap-type ball valve for refrigeration of claim 1, wherein: the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are all O-shaped sealing rings.
CN202011021530.6A 2019-12-17 2020-09-25 Clamping and pressing type ball valve for refrigeration Pending CN112081942A (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

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CN112081942A true CN112081942A (en) 2020-12-15

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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

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CN201911300611.7A Pending CN111075946A (en) 2019-12-17 2019-12-17 Clamping and pressing type ball valve for refrigeration

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN202011023492.8A Pending CN112081943A (en) 2019-12-17 2020-09-25 Integral structure's card pressure formula ball valve

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CN112081943A (en) 2020-12-15
CN111075946A (en) 2020-04-28

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