CN116928405A - Method for manufacturing one-way valve and one-way valve - Google Patents
Method for manufacturing one-way valve and one-way valve Download PDFInfo
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- CN116928405A CN116928405A CN202211199548.4A CN202211199548A CN116928405A CN 116928405 A CN116928405 A CN 116928405A CN 202211199548 A CN202211199548 A CN 202211199548A CN 116928405 A CN116928405 A CN 116928405A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 19
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 51
- 239000010935 stainless steel Substances 0.000 claims abstract description 51
- 230000007704 transition Effects 0.000 claims description 56
- 238000003466 welding Methods 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 10
- 238000003672 processing method Methods 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 description 32
- 238000010586 diagram Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000000137 annealing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003825 pressing 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
- F16K15/14—Check valves with flexible valve members
- F16K15/1401—Check valves with flexible valve members having a plurality of independent valve members
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- 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
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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
- F16K15/14—Check valves with flexible valve members
- F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
Abstract
The application discloses a manufacturing method of a one-way valve, the one-way valve comprises a valve body part and a valve part, the valve body part comprises a first valve body and a second valve body, the valve part comprises a valve seat and a valve core, the valve seat comprises a valve port, the valve core can be axially displaced along the valve body part to close or open the valve port, and the processing method of the valve body part comprises the following steps: providing a first stainless steel round tube blank, and flaring one end of the first stainless steel round tube blank to form a straight tubular first connecting section, wherein the inner diameter of the first connecting section is larger than that of the first stainless steel round tube blank; providing a second stainless steel round tube blank, and flaring one end of the second stainless steel round tube blank to form a straight tubular second connecting section, wherein the inner diameter of the second connecting section is larger than that of the second stainless steel round tube blank; the application also discloses another manufacturing method and the one-way valve obtained according to the manufacturing method, and the material and process cost of the valve body part are reduced.
Description
Technical Field
The application relates to the technical field of fluid control, in particular to a manufacturing method of a one-way valve and the one-way valve thereof.
Background
Fig. 8 is a schematic structural diagram of a check valve according to the background art, and fig. 9 is a schematic structural diagram of the first valve body in fig. 8. The check valve shown in fig. 8 and 9 comprises a valve body part 01 made of stainless steel materials, and further comprises a valve part 02, wherein the valve part 02 comprises a valve seat 021 and a magnetic stripe 022, the valve seat 021 and the valve body part 01 are welded and fixed, the valve body part 01 can be of an integral tubular structure, the valve body part 01 can also be of a split type structure as shown in fig. 1, the check valve comprises a tubular first valve body 04, the first valve body 04 comprises a main body 041, a straight pipe 043 and a connecting part 042, one end of the main body 041 is welded and fixed with the valve seat 021, the other end of the main body 041 is connected with one end of the connecting part 042, and the other end of the connecting part 042 is connected with the straight pipe 043.
The check valve having the above-described structure has a straight cylindrical main body 041 with an inner diameter d2, and the connecting portion 042 gradually decreases in diameter from one end of the main body 041 toward a direction away from the valve seat 021, and the connecting portion 042 has an inner diameter d at one end thereof away from the main body 041 1 ，d 2 >d 1 The length of the main body 041 is La, and the length of the straight tube 043 is L b ,L b >L a The first valve body 04 is formed by an inner diameter d 2 The stainless steel pipe is subjected to necking forming, annealing is required after necking, and pickling or polishing is possibly required after annealing. The check valve with the structure has room for improvement in material cost and process cost of the valve body part 01.
Disclosure of Invention
The application aims to provide a manufacturing method of a one-way valve,
the one-way valve comprises a valve body part and a valve part, wherein the valve body part comprises a first valve body and a second valve body, the valve part comprises a valve seat and a valve core, the valve seat comprises a valve port, the valve core can axially displace along the valve body part to close or open the valve port, and the processing method of the valve body part comprises the following steps:
providing a first stainless steel round tube blank, and flaring one end of the first stainless steel round tube blank to form a straight tubular first connecting section, wherein the inner diameter of the first connecting section is larger than that of the first stainless steel round tube blank; providing a second stainless steel round tube blank, and flaring one end of the second stainless steel round tube blank to form a straight tubular second connecting section, wherein the inner diameter of the second connecting section is larger than that of the second stainless steel round tube blank; and welding and fixing the first connecting section and the valve seat, and welding and fixing the second connecting section and the valve seat.
The application also provides a manufacturing method of another one-way valve, the one-way valve comprises a valve body part and a valve part, the valve body part comprises a first valve body and a second valve body, the valve part comprises a valve seat and a valve core, the valve seat comprises a valve port, the valve core can be displaced along the axial direction of the valve body part to close or open the valve port, and the processing method of the valve body part comprises the following steps:
providing a stainless steel round tube blank, flaring the middle part of the stainless steel round tube blank to form a straight tubular middle flaring section, respectively leaving a first body section and a second body section which are not flared at the two ends of the middle flaring section, wherein the inner diameter of the middle flaring section is larger than that of the stainless steel round tube blank, cutting the middle flaring section to divide the middle flaring section into a first connecting section and a second connecting section in the length direction, and welding and fixing the first connecting section and the second connecting section with the valve seat.
The manufacturing method of the one-way valve can reduce the material and process cost of the valve body part.
The application also provides a one-way valve which is obtained according to the manufacturing method and can reduce the material and process cost of the valve body part, wherein the valve part comprises a magnetic attraction piece and a stop piece, the valve core is a diaphragm, the magnetic attraction piece is connected with the valve seat, the stop piece is fixedly connected with the valve seat, the stop piece comprises a valve core stop part and a guide part, and the diaphragm is in clearance sliding fit with the guide part; in the axial direction of the valve body member, the diaphragm is axially movable relative to the guide portion to close the valve port or to abut against the valve element stopper portion.
Drawings
FIG. 1 is a schematic view of a check valve according to a first embodiment of the present application;
FIG. 2 is a schematic view of the first valve body of FIG. 1;
FIG. 3 is a schematic view of the second valve body of FIG. 1;
FIG. 3a is a schematic diagram showing the cooperation of a tube blank and a film tool;
FIG. 3b is a schematic view of the structure of the tube blank in FIG. 3a after expanding and flaring;
FIG. 4A is a perspective view of the stopper of FIG. 1;
FIG. 4B is a schematic diagram showing the cooperation of the stop member and the valve core in the fully opened state of the check valve;
FIG. 5 is a schematic view of the valve seat of FIG. 1;
FIG. 6 is a schematic illustration of the valve port flow area (shown in phantom);
FIG. 7 shows a valve throttling flow passage S 3 Is shown in the figure (not shaded);
FIG. 8 is a schematic diagram of a check valve according to the background art;
fig. 9 is a schematic view of the first valve body in fig. 8.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings and specific embodiments.
The check valve of the first embodiment shown in fig. 1 includes a valve body member 1 and a valve member 2. The valve body part 1 comprises a first valve body 11 and a second valve body 12, the first valve body 11 and the second valve body 12 are made of stainless steel materials, and the first valve body 11 and the second valve body 12 are welded and fixed with the valve part 2 in the manufacturing process of the check valve. The valve member 2 may be integrally built in the valve body member 1 and fixedly connected to the valve body member 1, i.e., the first valve body 11 and the second valve body 12 are butt welded. As shown in fig. 1, the first valve body 11 and the second valve body 12 may be welded to the valve member 2, respectively, and the valve member 2 may partially expose the valve member 1 in the circumferential direction of the check valve. It should be noted that the structure of the valve body component of the check valve is not limited to the check valve shown in fig. 1, and may be applied to other valves.
The following describes the structure of the first valve body 11 in detail, as shown in fig. 1 and 2, the first valve body 11 includes a first body section 111, a first connecting section 112 fixedly connected to the valve seat 21, and a first transition section 113 engaged with the first connecting section 112 and the first body section 111. In the circumferential direction of the check valve, namely in the radial direction of the valve body part 1, the cross sections of the first connecting section 112 and the first transition section 113 are circular, and one end, far away from the first body section 111, of the first connecting section 112 is welded and fixed with the valve seat 21.
The first body section 111 is straight, the first connecting section 112 is straight, the inner diameter of the first body section 111 is smaller than the inner diameter of the first connecting section 112, and the outer diameter of the first body section 111 is smaller than the outer diameter of the first connecting section 112. The first transition section 113 includes a first end 1131 engaged with the first body section 111 and a second end 1132 engaged with the first connection section 112, that is, the inner diameter and the outer diameter of the first end 1131 are smaller than the inner diameter and the outer diameter of the second end 1132, respectively, and in this embodiment, the first filter section 113 is gradually increased from the first end 1131 to the inner diameter of the second end 1132. Defining the inner diameter of the first body section 111 as d 1 The first connecting section 112 has an inner diameter d 2 The first end 1131 of the first transition 113 also has an inner diameter d 1 The second end 1132 also has an inner diameter d 2 。
When machining the first valve body 11, an inner diameter d is used 1 The first body section 111, the first transition section 113 and the first connection section 112 are made of stainless steel pipe. Wherein the first transition section 113 and the first connecting section 112 are formed by a pair of inner diameters d 1 Is flared. In the axial direction of the check valve, as shown in FIG. 2, a length L of the first connecting section 112 is defined 2 The length of the first body section 111 is L 1 Then satisfy L 1 Greater than L 2 . The first transition section 113 is tapered, and defines a length L of the first transition section 113 along the extending direction of the first transition section 113 3 . The first valve body 11 is processed in such a way that, compared with the prior art, annealing like necking is not needed, and no entering is neededThe pickling process is high in processing efficiency, and when the first valve body 11 with the same structural size is processed, the scheme can be used for processing the pipe body with the inner diameter smaller than that in the prior art, so that the material and process cost is reduced.
Further, as shown in FIG. 2, the outer diameter of the first body section 111 is defined as D 1 Defining the outer diameter of the first connecting section 112 as D 2 Preferred design (D 2 -D 1 )/D 1 The machining reliability of the first valve body and the strength of the first valve body can be guaranteed by the arrangement of the valve body and the valve body.
The first valve body 11 is sleeved with the valve seat 21, and the first valve body 11 and the valve seat 21 are fixedly connected by fusion welding, for example, the first valve body and the valve seat 21 can be welded and fixed by specific modes such as laser welding, argon arc welding, plasma welding and the like.
In this embodiment, the structure of the second valve body 12 is the same as that of the first valve body 11, specifically, as shown in fig. 3, the second valve body 12 includes a second body section 211, a second connecting section 212 fixedly connected with the valve seat 21, and a second transition section 213 engaged with the second connecting section 212 and the second body section 211. In the circumferential direction of the check valve, i.e. in the radial direction of the valve body part 1, the cross sections of the second connecting section 212 and the second transition section 213 are circular. The end of the second connecting section 212 remote from the first body section 211 is welded to the valve seat 21.
The second body section 211 is straight, the second connecting section 212 is straight, the inner diameter of the second body section 211 is smaller than the inner diameter of the second connecting section 212, the second transition section 113 includes a third end 2131 connected with the second body section 211 and a fourth end 2132 connected with the second connecting section 212, the inner diameter of the third end 2131 is smaller than the inner diameter of the fourth end 2132, and in this embodiment, the inner diameter of the second filtering section 213 is gradually increased from the third end 2131 to the inner diameter of the fourth end 2132. Defining the inner diameter of the second body section 211 as d 21 The second connecting section 212 has an inner diameter d 22 The third end 2131 of the second transition piece 213 also has an inner diameter d 21 The fourth end 2132 has an inner diameter d 22 。
When machining the second valve body 12, an inner diameter d is used 21 The second body section 211, the second transition section 213 and the second connection section 212 are made of stainless steel tubing. Wherein, the firstThe two transition sections 213 and the second connecting section 212 are formed by a pair of inner diameters d 21 Is processed by flaring of the stainless steel tube. In the axial direction of the check valve, as shown in FIG. 3, the second connecting section 212 is straight, and the length of the second connecting section 212 is L 22 The second body section 211 has a length L 21 ，L 21 Greater than L 22 . The second transition section 213 is tapered, and the length of the second transition section 213 is L along the extending direction of the second transition section 213 23 The second valve body 12 is processed in this way, compared with the prior art, the processing efficiency is high without annealing like necking processing, and when the second valve body 12 with the same structural size is processed, the scheme can be processed by using a pipe with smaller inner diameter than that in the prior art, and the material and process cost is reduced.
Further, as shown in FIG. 3, the outer diameter of the second body section 211 is defined as D 21 Defining the outer diameter of the second connecting section 212 as D 22 Preferred design (D 22 -D 21 )/D 21 Less than or equal to 0.3. By the design, the processing reliability of the second valve body can be guaranteed, and the strength of the second valve body can be guaranteed.
The second valve body 12 is sleeved with the valve seat 21, and the second valve body 12 and the valve seat 21 are fixedly connected by fusion welding, for example, the second valve body and the valve seat 21 can be welded and fixed by specific modes such as laser welding, argon arc welding, plasma welding and the like.
In this embodiment, the inner diameter d of the first body section 111 1 With an inner diameter d of the second body section 211 21 Similarly, all are designated as P, the outer diameter D of the first body section 111 1 And an outer diameter D of the second body section 211 21 The same is set as T; inner diameter d of first connecting section 112 2 With an inner diameter d of the second connecting section 212 22 Similarly, all are set to W, and the outer diameter D of the first connecting section 112 2 Outer diameter D of second connecting section 212 22 The same is set as T; length L of first body section 111 1 Length L with second body section 211 21 Is set to R, the length L of the first connecting section 112 2 Length L to second connecting section 212 22 The lengths of (2) are the same, and S is set. Along the extending direction of the first transition section 113, the length of the first transition section 113 is defined as L 3 Along the extension direction of the second transition section 213The second transition 213 has a length L 23 Length L of first transition 113 3 Length L with second transition 213 23 Similarly, the first valve body 11 and the second valve body 12 are all L-shaped, and the processing is convenient and the universality is strong.
The following details of the processing method of the first valve body 11 and the second valve body 12 in the manufacturing method of the check valve of the present embodiment include, but are not limited to:
providing a stainless steel round tube blank X with a certain length, wherein the inner diameter of the stainless steel round tube blank X is M, the outer diameter of the stainless steel round tube blank X is T, and the middle of the stainless steel round tube blank X is internally expanded and flared by utilizing a die and a tool, for example, as shown in fig. 3a and 3b, the round tube blank is clamped by an upper die 200 and a lower die 300, and is flared by adopting a hydraulic internal expansion mode, so that an intermediate flaring section 100, a first body section 111, a first transition section 113, a second body section 211 and a second transition section 213 are formed. Wherein the length of the middle flaring segment 100 is the sum of the lengths of the first connecting segment 112 and the second connecting segment 212, the inner diameter of the middle flaring segment 100 is W, and the outer diameter is T. The inner diameter W of the intermediate flare section 100 is greater than the inner diameter M of the stainless steel round tube blank.
The intermediate flared section 100 is cut in half and equal to form the first valve body 11 and the second valve body 12, i.e., the intermediate flared section 100 is divided into two in the length direction to form the aforementioned first connecting section 112 and second connecting section 212. The half-cutting mode can be laser cutting or other manufacturing processes achieving the same purpose.
The following describes a method 2 for processing the valve body member 1 of the check valve of the present embodiment in detail:
providing a first stainless steel round tube blank with a specific length, wherein the inner diameter of the stainless steel round tube blank is M, the outer diameter of the stainless steel round tube blank is T, and flaring is carried out on one end of the first stainless steel round tube blank by utilizing a die and a tool, and specifically, the integral concave film and the flaring head are matched to carry out flaring, so that a first valve body 11 with the first body section 111, the first connecting section 112 and the first transition section 113 is formed.
Providing a second stainless steel round tube blank with a specific length, wherein the inner diameter of the second stainless steel round tube blank is M, the outer diameter of the second stainless steel round tube blank is T, and one end of the second stainless steel round tube blank is flared by utilizing a die and a tool, and specifically, the second valve body 12 with the second body section 211, the second connecting section 212 and the second transition section 213 can be formed by flaring in a mode of matching an integral concave film with a flaring head. In this embodiment, the second round stainless steel tube blank has the same length as the first round stainless steel tube blank.
It should be noted that, in the above processing method of the valve body component, other steps may be further included to meet the requirement when the valve body component is connected with other external components.
Compared with the prior art, the processing method of the valve body part has the advantages that a necking process is not adopted in the processing process, the processing efficiency is high, the environment is protected, and the material cost of the valve body part is reduced.
In this embodiment, the valve member 2 includes a valve seat 21, a magnetic attraction member 22, a stopper 23, a valve core 24, and a filter member 25, and the magnetic attraction member 22, the stopper 23, the valve core 24, and the filter member 25 are located in the inner cavity of the valve body member 1.
As shown in fig. 5, in combination with fig. 1, the valve seat 21 has a valve opening 210, the valve seat 21 and the magnetic attraction piece 22 can be in interference fit through press fitting, or can be directly fixedly connected through a third piece, or the valve seat 21 and the magnetic attraction piece 22 are welded and fixed after being in interference fit through press fitting, as shown in fig. 1, the valve component 2 further comprises a fixing piece 26, and the fixing piece 26 limits the magnetic attraction piece 22 after being welded and fixed with the valve seat 21, so that the magnetic attraction piece 22 is prevented from falling out of the valve seat 21.
In the present application, the stopper 23 is welded and fixed to the valve seat 21, and as shown in fig. 4A, 4B, and 5, the stopper 23 is made of a metal plate by pressing, and the valve seat 21 includes a body portion 20, and the body portion 20 is welded and fixed to the first valve body 11 and the second valve body 12. The end of the valve seat 21 remote from the first valve body 11 includes an annular projection 200, the annular projection 200 including the aforementioned valve port portion 210. The stopper 23 includes a circular fixing portion 231, a guiding portion 232 and a valve core stopper 233, where the fixing portion 231 is at least partially located at the outer periphery of the annular protruding portion 200, in this embodiment, the fixing portion 231 is sleeved on the outer periphery of the annular protruding portion 200, and the fixing portion 231 and the guiding portion are in interference fit first, so as to improve coaxiality of the stopper 23 and the valve seat 21. The spool 24 of the check valve can abut against the spool stopper 233, that is, the spool stopper 233 can limit the stroke of the spool 24 after the spool 24 is away from the valve port 210. The stopper 23 is stamped from a sheet metal material, and in this embodiment, the stopper 23 is stamped from a stainless steel sheet material. The wall thickness of the fixing portion 231 of the stopper 23 is the same as the wall thickness of the guide portion 232 and the valve body stopper portion 233. The valve body part 1 comprises a first fluid port a and a second fluid port B. The fixing portion 231 extends from one end of the guiding portion 232, which is close to the first fluid port a, along the axial direction of the valve seat 21 in a direction away from the valve core stop portion 233, that is, in the axial direction of the check valve, the fixing portion 231 and the valve core stop portion 233 are located at two sides of the guiding portion 233 respectively, the valve core 24 is mounted on the inner side of the stop member 23, and then the fixing portion 231 is sleeved on the outer portion of the annular protruding portion 200, in interference fit with the annular protruding portion 200, and is welded and fixed with the body portion 20 of the valve seat 21, specifically, in this embodiment, laser welding and fixing, but of course, the effect of the interference fit is to ensure coaxiality of the valve seat 21 and the stop member 23.
The valve spool 24 is capable of sliding in the axial direction of the valve body member 1 within the stopper 23 to open or close the valve port of the valve port portion 210. Specifically, the valve core 24 can overcome the attractive force of the magnetic attraction member 22 to leave the valve opening 210 under the action of the fluid pressure, and when the fluid pressure is reduced, the valve core 24 can close the valve port of the valve opening 210 under the action of the attractive force of the magnetic attraction member 22.
The filter element 25 can be fixedly connected with the valve seat 21 or can be in limit connection. When the valve core 24 abuts against the valve port portion 210, the first fluid port a and the second fluid port B do not flow, and when the valve core 24 leaves the valve port portion 210, the first fluid port a and the second fluid port B communicate, however, the core of the present application is not limited to the specific structure of the valve core 24, and when the valve core 24 has a throttling channel, a certain amount of fluid can also pass between the first fluid port a and the second fluid port B.
In this embodiment, the valve seat 21 and the stopper 23 are preferably made of stainless steel materials, the first valve body 11 is welded and fixed to the valve seat 21 by laser welding, the second valve body 12 is welded and fixed to the valve seat 21 by laser welding, the stopper 23 is welded and fixed to the valve seat 21 by laser welding, the process is simple, the processing efficiency is high, and the cost is low, but the method is not limited to stainless steel materials, and other steels such as 20 steel, 45 steel and the like can be used for welding and fixing by melting welding.
When the check valve of the above embodiment is manufactured, the first valve body 11 and the second valve body 12 may be welded to the valve seat 21 after the valve member 2 is assembled, and manufacturing is convenient, wherein when the first valve body 11 and the second valve body 12 are welded to the valve seat 21, the first welding may be performed, the second welding may be performed, that is, the first valve body 11 and the second valve body 12 may be welded to the valve seat 21 at the same time, or after the first valve body 11 or the second valve body 12 is welded to the valve seat 21, the other one of the first valve body 11 and the second valve body 12 may be welded to the valve seat 21.
When fluid flows between the first fluid port a and the second fluid port B, the fluid flows through the magnetic attraction member 22 and the valve port portion 210. Definition S 1b Is the valve port area of the valve port portion 210. Definition S 1a The flow passage area of the magnetic attraction member 22 when the fluid flows from the first fluid port a to the second fluid port B, that is, the projected area of the magnetic attraction member 22 on the valve port of the valve port portion 210. For example, when the magnetic attraction member 22 is a rectangular parallelepiped, the overcurrent area S thereof 1a The area of the surface of the magnetic attraction member 22 facing the stopper 23, which is the area of the portion that can be in contact with the fluid, is the valve port flow area S of the valve port 210 due to the blocking of the magnetic attraction member 22 1 (unshaded part in FIG. 6) =S 1b -S 1a . As shown in fig. 5 and 6, in the present embodiment, the width of the magnetic attraction member 22 on the projection surface of the cross section perpendicular to the axial direction of the valve body member 1 is W, and the diameter of the valve port portion 210 is R, then S 1b ＝πR 2 /4, S 1 ＝πR 2 /4-S 1a S is known to 1a Approximately equal to R.times.W, S 1 ≈πR 2 /4-R*W。
As shown in fig. 4A, the guide portion 232 of the stopper 23 is formed of at least three ribs 2321, and each rib 2321 has the same structure and size and is equally spaced in the circumferential direction of the stopper 23. The valve core 24 is positioned inside the guide portion 232, and the valve core 24 is in clearance sliding fit with the guide portion 232. For convenience of processing, the inner diameter of the fixing portion 231 is the same as the inner diameter of the circular ring surrounded by the inner wall of the guide portion 232.
As shown in fig. 4B, the valve core stopper 233 includes a disc portion 2331 and a plurality of brackets 2332 extending from the outer peripheral surface of the disc portion 2331 to the guide portion 232, the number of the brackets 2332 is the same as the number of the ribs 2321 of the guide portion 232 and are connected in one-to-one correspondence, and the thicknesses of the disc portion 2331 and the brackets 2332 are the same as the thickness of the ribs 2321, which are defined as M. The width of the bracket 2332 is the same as the width of each rib 2331, and is defined as N, that is, the thickness M of the bracket 2331 is the same as the thickness M of the rib 2321, the width N of the bracket 2331 is the same as the width N of the rib 2321, the processing is convenient, and the stop piece 23 is specifically formed by stamping a stainless steel plate with the thickness M.
The valve core 24 is a metal membrane, in the fully opened state of the one-way valve, the valve core 24 is abutted against the valve core stop portion 233, the valve core 24 is stopped by the valve core stop portion 233, and the fluid flows out of the stop member 23 through the communication channel, wherein, as shown in fig. 1, 4A, 4B and 7, the communication channel refers to each flow channel 2333 formed by the flow space between each rib 2321 after the valve core 24 is abutted against the valve core stop portion 233, the valve core 24 is a circular membrane, the outer diameter of the valve core 24 is R', in the fully opened state of the one-way valve, the height between the valve core 24 and the end surface of the fixing portion 231 close to the valve core stop portion 233 is H, and the sum of the areas of each flow channel 2333 is the flow area S of the communication channel 2 =pi R '×h-4n×h= (pi R' -4N) H. The fluid flowing from the first fluid port a flows out through the valve port 210, flows out through the flow channels 2333, and flows into the second fluid port B, and is designed S 2 ≥S 1 The flow resistance during fluid circulation is reduced.
The check valve is fully opened, the fluid flowing out of each flow passage 2333 flows out of the second fluid port B after passing through the valve throttling flow passage between the inner wall of the second valve body 12 and the outer walls of the stop piece 23 and the valve core 24, and the flow area of the valve throttling passage is defined as S in the cross section direction of the check valve, namely the radial direction of the valve body part 1 3 (unshaded in FIG. 7), valve throttle passage flow area S 3 I.e. the flow area between the spool 24 and the second valve body 12, the valve throttle passage flow area S 3 ＝＝ΠD 22 2/4-ΠR’2/4-4*N*M＝Π(D 22 2-R'2/4-4 x n x m. Design S 3 ≤S 2 S is more than or equal to 1 1 /S 3 And less than or equal to 1.2, so that the flow capacity can be obtained as large as possible under the condition of minimum flow resistance.
In the above embodiment, the first fluid port a and the second fluid port B are located at the end portions of the first body section 111 and the second body section 211, respectively, it should be noted that, according to the connection requirement of the control valve to the external pipe or the like, for example, when the control valve is applied to the refrigeration system, the pipe of the refrigeration system may be directly connected to the first body section 111 and the second body section 211 according to the pipe connection requirement of the refrigeration system, or may be integrally connected to the external pipe or the like by further integrally flaring the first valve body 11 with a flared section larger than the inner diameter of the first body section 111, and/or integrally connected to the external pipe or the like by integrally flaring the second valve body 12 with a flared section larger than the inner diameter of the second body section 211, at this time, the first fluid port a and the second fluid port B are respectively provided at both flared sections.
The foregoing is merely illustrative of specific embodiments of this application and it will be appreciated by those skilled in the art that variations and modifications may be made without departing from the principles of the application, and it is intended to cover all modifications and variations as fall within the scope of the application.
Claims (10)
1. A method of manufacturing a check valve including a valve body member including a first valve body and a second valve body, and a valve member including a valve seat including a valve port and a valve spool displaceable in an axial direction of the valve body member to close or open the valve port, the method of manufacturing the valve body member comprising:
providing a first stainless steel round tube blank, and flaring one end of the first stainless steel round tube blank to form a straight tubular first connecting section, wherein the inner diameter of the first connecting section is larger than that of the first stainless steel round tube blank; providing a second stainless steel round tube blank, and flaring one end of the second stainless steel round tube blank to form a straight tubular second connecting section, wherein the inner diameter of the second connecting section is larger than that of the second stainless steel round tube blank; and welding and fixing the first connecting section and the valve seat, and welding and fixing the second connecting section and the valve seat.
2. The method of manufacturing a check valve according to claim 1, wherein the first connecting section and the second connecting section are manufactured by a manner that a concave film is fit with a flaring head during the manufacturing process of the valve body member.
3. The method according to claim 2, wherein the non-flared portions are formed with a first body section and a second body section, respectively, a first transition section is formed between the first body section and the first connecting section, a second transition section is formed between the second body section and the second connecting section, and an inner diameter d of the first body section 1 With an inner diameter d of the second body section 21 The same, the outer diameter D of the first body section 1 With the outer diameter D of the second body section 21 The same; the inner diameter d of the first connecting section 2 With the inner diameter d of the second connecting section 22 The same, the outer diameter D of the first connecting section 2 An outer diameter D of the second connecting section 22 The same; defining the length of the first transition section as L along the extending direction of the first transition section 3 Defining the length of the second transition section as L along the extending direction of the second transition section 23 Length L of the first transition section 3 Length L of the second transition section 23 Is identical and satisfies (D 2 -D 1 )/D 1 ≤0.3，(D 22 -D 21 )/D 21 ≤0.3。
4. A method of manufacturing a check valve including a valve body member including a first valve body and a second valve body, and a valve member including a valve seat including a valve port and a valve spool displaceable in an axial direction of the valve body member to close or open the valve port, the method of manufacturing the valve body member comprising:
providing a stainless steel round tube blank, flaring the middle part of the stainless steel round tube blank to form a straight tubular middle flaring section, respectively leaving a first body section and a second body section which are not flared at two ends of the middle flaring section, wherein the inner diameter of the middle flaring section is larger than that of the stainless steel round tube blank, and cutting the middle flaring section: and dividing the middle flaring section into a first connecting section and a second connecting section in the length direction, and welding and fixing the first connecting section, the second connecting section and the valve seat.
5. The method of manufacturing a check valve according to claim 4, wherein the stainless steel round tube blank is clamped by a die during the machining of the valve body member, and then the intermediate flaring section is formed by flaring in a hydraulic inward expansion manner, and the intermediate flaring section is cut in half and half equally during the cutting of the intermediate flaring section.
6. The method of claim 5, wherein the intermediate flared section is bisected by the laser cut.
7. The method according to any one of claims 4 to 6, wherein a die and a tooling are used for expanding the middle part of the stainless steel round tube blank inwards to form the middle expanding section, and a first transition section and a second transition section are formed on two sides of the middle expanding section respectively, wherein the first transition section and the second transition section are in a horn shape, the first transition section comprises a first end and a second end, the first end of the first transition section is connected with the first body section, the second end of the first transition section is connected with the first connecting section, and the inner diameter of the first transition section gradually increases from the first end to the second end; the second transition section comprises a third end and a fourth end, the third end of the second transition section is connected with the second body section, the fourth end of the second transition section is connected with the second connecting section, and the inner diameter of the second transition section is gradually increased from the third end to the fourth end.
8. The method of manufacturing a check valve according to claim 7, wherein the die includes an upper die and a lower die, and a first body section and a second body section are respectively formed by clamping non-flared portions of the upper die and the lower die during processing of the intermediate flared portion, the first body section being engaged with the first transition section, and the second body section being engaged with the second transition section.
9. The method of claim 8, wherein the first body section has an inner diameter d during processing of the valve body member 1 With an inner diameter d of the second body section 21 The same, the outer diameter D of the first body section 1 With the outer diameter D of the second body section 21 The same; the inner diameter d of the first connecting section 2 With the inner diameter d of the second connecting section 22 The same, the outer diameter D of the first connecting section 2 An outer diameter D of the second connecting section 22 The same; defining the length of the first transition section as L along the extending direction of the first transition section 3 Defining the length of the second transition section as L along the extending direction of the second transition section 23 Length L of the first transition section 3 Length L of the second transition section 23 Is identical and satisfies (D 2 -D 1 )/D 1 ≤0.3，(D 22 -D 21 )/D 21 ≤0.3。
10. A one-way valve made by the method for manufacturing the one-way valve according to any one of claims 1-9, wherein the valve component comprises a magnetic attraction piece and a stop piece, the valve core is a membrane, the magnetic attraction piece is connected with the valve seat, the stop piece is fixedly connected with the valve seat, the stop piece comprises a valve core stop part and a guide part, and the membrane is in clearance sliding fit with the guide part; in the axial direction of the valve body member, the diaphragm is axially movable relative to the guide portion to close the valve port or to abut against the valve element stopper portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022103383202 | 2022-04-01 | ||
| CN202210338320 | 2022-04-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116928405A true CN116928405A (en) | 2023-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211199548.4A Pending CN116928405A (en) | 2022-04-01 | 2022-09-29 | Method for manufacturing one-way valve and one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116928405A (en) |
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2022
- 2022-09-29 CN CN202211199548.4A patent/CN116928405A/en active Pending
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Effective date of registration: 20231106 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Applicant after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: 312500 xialiquan village, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province Applicant before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |