CN112747129A - Control valve and manufacturing method thereof - Google Patents

Control valve and manufacturing method thereof Download PDF

Info

Publication number
CN112747129A
CN112747129A CN201911052987.0A CN201911052987A CN112747129A CN 112747129 A CN112747129 A CN 112747129A CN 201911052987 A CN201911052987 A CN 201911052987A CN 112747129 A CN112747129 A CN 112747129A
Authority
CN
China
Prior art keywords
wall
core
wall portion
valve
sleeve
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
CN201911052987.0A
Other languages
Chinese (zh)
Inventor
不公告发明人
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.)
Zhejiang Sanhua Automotive Components Co Ltd
Original Assignee
Zhejiang Sanhua Automotive Components 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 Zhejiang Sanhua Automotive Components Co Ltd filed Critical Zhejiang Sanhua Automotive Components Co Ltd
Priority to CN201911052987.0A priority Critical patent/CN112747129A/en
Publication of CN112747129A publication Critical patent/CN112747129A/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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings
    • 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
    • F16K25/00—Details relating to contact between valve members and seats
    • F16K25/005—Particular materials for seats or closure elements
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Plasma & Fusion (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention discloses a control valve and a manufacturing method thereof, and the control valve comprises a valve body and a valve core assembly, wherein the valve core assembly comprises a sleeve, a first core body, a second core body and a valve seat, and the sleeve is sleeved outside at least part of the first core body and the second core body; the sleeve is provided with a peripheral wall part, and at least part of the first core body is welded and fixed with the peripheral wall part; the valve seat comprises a main body part and an annular bulge, the annular bulge is bulged out of the main body part, the inner part of the annular bulge is provided with a hole, the part of the second core body is positioned in the sleeve, the lower end of the second core body extends into the annular bulge, and the second core body is in clearance fit with the peripheral wall part; the annular protrusion portion has a first wall portion and a second wall portion which are arranged oppositely, the first wall portion faces the second core body, the second wall portion faces away from the second core body, and at least part of the second wall portion is welded and fixed with the peripheral wall portion.

Description

Control valve and manufacturing method thereof
Technical Field
The present invention relates to the field of fluid control.
Background
The electromagnetic valve is a stop valve which is opened and closed by means of electromagnetic force. Fig. 1 illustrates a structure of a solenoid valve 1, where the solenoid valve 1 has a valve body 3, a valve core assembly 2, a coil driving portion 4, and the like, the valve core assembly 2 includes a valve seat 25, a sleeve 26, a first core 21, a second core 24, a fixing screw 27, and the like, the first core 21 and the second core 24 are located inside the sleeve 26, the first core 21 and the second core 24 are matched, and the valve core assembly 2 and the coil driving portion 4 are fixed by the fixing screw 27. The sleeve 26 is stainless steel, the valve seat 25 is stainless steel, and the flux is a brazing flux. The valve seat 25 and the sleeve 26 are welded together, the welding flux is positioned between the sleeve 26 and the valve seat 25, and the valve seat 25 is large in structure because the sleeve 26 extends into the valve seat 25.
Disclosure of Invention
The technical scheme of the invention provides a control valve with a smaller valve core assembly structure and a manufacturing method thereof.
A control valve comprises a valve body and a valve core assembly, wherein the valve core assembly comprises a sleeve, a first core body, a second core body and a valve seat, and at least parts of the first core body and the second core body are accommodated in the sleeve;
the sleeve has a peripheral wall portion, and at least part of the first core is welded and fixed with the peripheral wall portion;
the valve seat comprises a main body part and an annular bulge, wherein the annular bulge protrudes out of the main body part, an opening of the annular bulge is formed, at least part of the annular bulge extends into the sleeve, the annular bulge is provided with a first wall part and a second wall part which are oppositely arranged, the first wall part faces the second core body, the second wall part faces away from the second core body, at least part of the second wall part is welded and fixed with the peripheral wall part, the lower end of the second core body extends into the annular bulge, the second core body is in clearance fit with the peripheral wall part, and the clearance fit part of the second core body and the peripheral wall part is located between the welding position of the second wall part and the peripheral wall part and the welding position of the first core body and the peripheral wall part.
A method of manufacturing a control valve comprising the steps of:
providing a valve seat comprising an annular projection,
providing a sleeve, a first core body and a second core body, and sleeving the sleeve outside at least parts of the first core body and the second core body, wherein the first core body is in clearance fit with the sleeve;
sleeving the sleeve outside the annular bulge of the valve seat;
the height of the sleeve is adjusted by adjusting the part of the sleeve sleeved outside the annular bulge;
the peripheral wall portion of the sleeve is welded to a portion of the first core, and the peripheral wall portion of the sleeve is welded to the annular projection portion.
Above-mentioned technical scheme's control valve includes sleeve and annular bulge, the sleeve is stretched into to at least part of annular bulge, the annular bulge has the second wall portion, the second wall portion dorsad second core, at least part and the telescopic perisporium welded fastening of the second wall portion of annular bulge, second core and perisporium clearance fit, and second core and perisporium clearance fit position are located between second wall portion and perisporium welding position and first core and perisporium welding position, it is smooth that second core and perisporium slide between, and the annular bulge stretches into the sleeve and welded fastening with the sleeve, relative the scheme that mentions in the background art, the diameter of valve seat has been reduced, make case subassembly structure less.
Drawings
FIG. 1 is a schematic cross-sectional view of a solenoid valve configuration;
FIG. 2 is a schematic cross-sectional view of one embodiment of a control valve;
FIG. 3 is a schematic structural view of the valve spool assembly of FIG. 2;
FIG. 4 is an enlarged view of part A of FIG. 3;
FIG. 5 is a schematic view of the structure of FIG. 3 after welding;
FIG. 6 is a schematic view of another embodiment of a valve core assembly;
FIG. 7 is a schematic view of the structure of FIG. 6 after welding;
FIG. 8 is a schematic cross-sectional view of another embodiment of a control valve;
FIG. 9 is a schematic cross-sectional view of yet another embodiment of a control valve.
Detailed Description
Referring to fig. 2, fig. 2 illustrates a cross-sectional schematic view of a control valve 100. The control valve 100 includes a valve body 11, a valve core assembly 12, a coil portion 13, and a fixing frame 14, where the valve body 11 includes an accommodating cavity 111, at least a portion of the valve core assembly 12 is located in the accommodating cavity 111, the valve body 11 includes an inlet 112 and an outlet 113, and the valve core assembly 12 is matched with the valve body 11 to communicate the inlet 112 with the outlet 113, or to block the communication between the inlet 112 and the outlet 113.
In this context, inside and outside means that the direction Z in fig. 2, i.e. the direction towards the valve needle is the inward direction, the valve needle is radiating outwards is the outward direction, and the inside and outside of each part is for each part, and the inside and outside of each part is not limited to be the inside or outside of the control valve.
Herein, the height direction refers to the direction H in fig. 2, and the height direction refers to the direction in which the valve core assembly is inserted into the valve body, wherein the valve body is taken as the relative downward direction, and the valve core assembly is taken as the relative upward direction.
The valve core assembly 12 includes a first core 121, a second core 122, a sleeve 123, and a valve seat 124, where one end of the sleeve 123 is open, and the other end is closed, the sleeve 123 is sleeved outside at least part of the first core 121 and the second core 122, the first core 121 and the second core 122 are coaxially matched, the first core 121 and the second core 122 are arranged at intervals or in contact, a local part between the first core 121 and the second core 122 may be in contact with each other, the first core 121 is a stationary core, the second core 122 is a movable core, the movable core moves up and down inside the sleeve 123, when the movable core moves in an upward direction, the movable core may be in contact with the stationary core, and when the movable core moves in a downward direction, the movable core is not in contact with the stationary core. The movement of the movable core body realizes the opening and closing of the valve port.
Referring to fig. 3-5, where fig. 3 is a structure before welding, fig. 5 is a structure after welding, the valve seat 124 is located on the opening side of the sleeve 123, the valve core assembly 12 includes a spring 125, one end of the spring 125 abuts against the first core 121, the other end of the spring 125 abuts against the second core 122, the first core 121 abuts against the second core 122 through the spring, one end of the second core 122 fits with the first core 121, the other end of the second core 122 extends into the valve seat 124, and the valve seat 124 is welded and fixed to the sleeve 123.
The valve seat 124 includes a main body 1241 and an annular protrusion 1242, the annular protrusion 1242 protrudes from the main body 1241, at least a portion of the sleeve 123 is sleeved outside the annular protrusion 1242, the valve seat 124 includes a central through hole 1246, and a portion of the second core 122 is located in the central through hole 1246.
The sleeve 123 has one end open, and the open end of the sleeve 123 is fitted with the valve seat 124; the sleeve 123 includes a peripheral wall portion 1230, the top 1231 of the sleeve 123 being integrally formed with the peripheral wall portion 1230; the top 1231 encloses the first core 121, the sleeve 123 is integrally formed, and the sleeve 123 encloses the first core 121 and the second core 122, which is simple in structure.
The first core 121 has a first outer wall 1211 and a second outer wall 1212, the first outer wall 1211 is located above the second outer wall 1212 in the height direction H of the control valve, the first outer wall 1211 is relatively close to the top 1231, the first outer wall 1211 is in clearance fit with the peripheral wall 1230 of the sleeve 123, and at least a portion of the second outer wall 1212 is welded and fixed to the peripheral wall 1230 of the sleeve 123. Since the second outer wall portion 1212 is in interference fit with the peripheral wall portion 1230 of the sleeve 123 before welding, and the first outer wall portion 1211 is in clearance fit with the peripheral wall portion 1230 of the sleeve 123, the first core 121 is convenient to assemble on the top of the sleeve 123 in the assembling process, and the assembling difficulty is reduced. Wherein clearance fit means that the clearance is less than 0.5 mm.
As another embodiment, the first core 121 may also include a central through hole, the diameter of the central through hole is smaller than that of the spring 125, and the first outer wall 1211 and the peripheral wall 1230 of the sleeve 123 may have an interference fit therebetween, so that when the first core is assembled on the top of the sleeve 123, air at the top can be compressed into the central through hole, which helps to reduce the assembly difficulty.
The second core 122 has a first outer wall portion 1221 and a second outer wall portion 1222, the first outer wall portion 1221 is located above the second outer wall portion 1222 in the height direction H of the control valve, the first outer wall portion 1221 is in clearance fit with the peripheral wall portion 1230 of the sleeve 123, the second outer wall portion 1222 is disposed opposite to the annular protrusion 1242, and the second outer wall portion 1222 is in clearance fit with the annular protrusion 1242, and the second core 122 can move up and down relative to the inner wall of the sleeve 123 and the annular protrusion 1242.
The annular protrusion 1242 has a first wall portion 1242a and a second wall portion 1242b, the first wall portion 1242a facing the second core 122, the second wall portion 1242b facing away from the second core 122, the second wall portion 1242b facing the peripheral wall portion 1230, and at least a portion of the peripheral wall portion 1230 is weld-fixed to at least a portion of the second wall portion 1242 b.
Under the condition that the electromagnetic force required by the electromagnetic valve is the same (that is, when the relative fit areas of the first core and the second core are substantially the same), because at least part of the annular protrusion 1242 is located in the sleeve 123, compared with the solution mentioned in the background art, the size of the annular protrusion is reduced, the size of the valve seat is reduced, and the valve core assembly structure is further miniaturized.
In addition, at least a part of the peripheral wall 1230 and at least a part of the second wall 1242b are welded to each other, so that the performance of the welding position is stable, which contributes to prolonging the service life of the control valve. Unlike the solution mentioned in the background art, which uses the brazing filler metal, if exposed to the air for a long time, the soldering position 23 is easily rusted, and in order to avoid the rusting of the soldering position 23, the sealing ring 22 needs to be installed between the coil driving part 4 and the valve seat 25, and the solution mentioned in the background art has a large valve seat size and a relatively complex structure.
The peripheral wall portion 1230 includes an inner wall 1234 and a bottom wall 1235, the inner wall 1234 of the peripheral wall portion 1230 is disposed opposite the second wall portion 1242b, and the bottom wall 1235 of the peripheral wall portion 1230 is disposed opposite the second wall portion 1242 b; the second wall portion 1242b includes a side wall 1244 and a platform wall 1243, the platform wall 1243 is located at the periphery of the side wall 1244, and the bottom wall 1235 of the peripheral wall portion 1230 is welded and fixed to at least a portion of the platform wall 1243. The second wall portion 1242b also includes an outer wall 1247, the outer wall 1247 being disposed in alignment with the outer wall of the peripheral wall portion 1230 of the sleeve 123.
Before welding, the bottom wall 1235 of the peripheral wall 1230 may have a gap with the second wall 1242b, or may be in contact with the second wall. During welding, the position between the sleeve and the valve seat is controlled through an external tool, and then laser welding is performed.
The first core 121 is made of a soft magnetic stainless steel material, the second core 122 is made of a soft magnetic stainless steel material, the valve seat 124 is made of a stainless steel material, the sleeve 123 is made of a stainless steel material, at least a portion of the second outer wall portion 1212 of the first core 121 and the peripheral wall portion 1230 of the sleeve 123 are welded and fixed by laser welding, and at least a portion of the peripheral wall portion 1230 and at least a portion of the second wall portion 1242b are welded and fixed by laser welding. The thickness of the sleeve 123 is between 0.3mm and 0.8mm, and the thickness of the sleeve 123 may be 0.5mm and 0.6 mm.
The sleeve and the valve seat may be welded and fixed by welding means such as argon arc welding or vacuum electron beam welding, and the second outer wall portion 1212 of the first core 121 and the peripheral wall portion 1230 of the sleeve 123 may be welded and fixed by welding means such as argon arc welding or vacuum electron beam welding.
The first core 121 has a bottom portion 1213, the second core 122 has a top portion 1223, one end of the spring 125 abuts against the bottom portion 1213, the second outer wall portion 1212 is welded and fixed to the peripheral wall portion 1230 of the sleeve 123, a distance between the welding position W2 formed by welding in the height direction H and the bottom portion 1213 is not less than 5mm, and a distance between the welding position W2 and the first outer wall portion 1211 is not less than 5mm, which contributes to improving the welding quality of the peripheral wall portion 1230 and the first core 121.
The body portion 1241 has a surface portion 1241a, and the distance between the welding position W1 of the peripheral wall portion 1230 and the second wall portion 1242b and the surface portion 1241a is in the range of 1.2-2 mm. Here, the distance between the welding position W1 and the surface portion 1241a is calculated with the welding position at the center in the control valve height direction H. The second core body 122 and the valve seat 124 are arranged in a split mode, the valve seat 124 is made of stainless steel materials which are not prone to rusting, the second core body is made of soft magnetic stainless steel materials, manufacturing cost of the control valve is reduced, and compared with the fact that the second core body 122 and the valve seat 124 are made of soft magnetic stainless steel materials integrally, cost input of materials is reduced.
Since the sleeve and the valve seat are laser-welded and the sleeve and the second core body are laser-welded, the distance between the welding position W1 of the peripheral wall portion 1230 and the second wall portion 1242b and the surface portion 1241a is in the range of 1.2-2mm, which helps the argon shield gas to concentrate at the welding position during the laser welding, helps the stability of the welding quality and the improvement of the service life of the control valve. If the distance between the welding position W1 and the surface part 1241a is very close, argon shield gas is easily affected by the structure of the surface part 1241a or the sleeve structure during welding, and the argon shield gas is difficult to concentrate at the welding position, so that the welding quality is poor and the product performance is affected.
The second core 122 is loosely fitted to the peripheral wall portion 1230, and the portion of the second core 122 that is loosely fitted to the peripheral wall portion 1230 is located between the welding position W1 of the second wall portion 1242b to the peripheral wall portion 1230 and the welding position W2 of the first core 121 to the peripheral wall portion 1230. As such, the welding of the sleeve and the annular projection does not affect the sliding between the second core 122 and the peripheral wall portion 1230, and the portion of the second core 122 that is in clearance fit with the peripheral wall portion 1230 includes the first outer wall portion 1221 of the second core 122.
The annular protrusion 1242 has a convex top wall 1245, and the height of the convex top wall 1245 exceeds the welding position w10.5 mm or more of at least a part of the bottom wall 1235 of the peripheral wall portion 1230 and the land wall 1243 in the height direction H of the control valve.
Referring back to fig. 2, the coil portion 13 is located on the outer periphery of the valve core assembly 12, the fixing frame 14 has an upper wall portion 141 and a lower wall portion 142, the upper wall portion 141 and the lower wall portion 142 surround the coil portion 13, the valve core assembly 12 passes through a through hole in the middle of the lower wall portion 142, and the height of the valve core assembly 12 does not exceed the height of the upper wall portion 141. Herein, the height of the valve core assembly 12 does not exceed the height of the upper wall portion means that the height position of the valve core assembly 12 in the height direction H does not exceed the height position of the upper wall portion in the height direction H. In this way, the height of the control valve in the height direction H is reduced compared to the embodiment shown in fig. 1, which contributes to downsizing of the control valve structure.
Referring to fig. 7 and 8, fig. 7 is a schematic structural view of the valve core assembly 12', and fig. 8 is a schematic structural view of fig. 7 after welding. The valve core assembly 12' includes a first core 121, a second core 122, a sleeve 123, and a valve seat 124, one end of the sleeve 123 is open, and the other end is closed, the sleeve 123 is sleeved outside the first core 121 and the second core 122, the first core 121 and the second core 122 are disposed in a matching manner, a local portion of the first core 121 and the second core 122 can be in contact with each other in a fitting manner, the first core 121 is a static core, the second core 122 is a dynamic core, the dynamic core moves up and down inside the sleeve 123, when the dynamic core moves in an upward direction, the dynamic core can be in fitting with the static core, and when the dynamic core moves in a downward direction, the dynamic core is not in fitting with the static core.
The valve seat 124 is located on the opening side of the sleeve 123, one end of the second core 122 is matched with the first core 121, the other end of the second core 122 extends into the valve seat 124, and the valve seat 124 and the sleeve 123 are fixed in a welding mode. The structure of the second core 122 cooperating with the first core 121 is similar to that shown in fig. 4.
The valve seat 124 includes a main body 1241 and an annular protrusion 1242, the annular protrusion 1242 protrudes from the main body 1241, at least a portion of the sleeve 123 is sleeved outside the annular protrusion 1242, the valve seat 124 includes a central through hole 1246, and a portion of the second core 122 is located in the central through hole 1246.
The first core 121 has a first outer wall 1211 and a second outer wall 1212, the first outer wall 1211 is located above the second outer wall 1212 in the height direction H of the control valve, the first outer wall 1211 is in clearance fit with the peripheral wall 1230 of the sleeve 123, and at least a portion of the second outer wall 1212 is welded and fixed to the peripheral wall 1230 of the sleeve 123. Since the second outer wall portion 1212 is in interference fit with the peripheral wall portion 1230 of the sleeve 123 before welding, and the first outer wall portion 1211 is in clearance fit with the peripheral wall portion 1230 of the sleeve 123, the first core 121 is convenient to assemble on the top of the sleeve 123 in the assembling process, and the assembling difficulty is reduced.
The second core 122 has a first outer wall portion 1221 and a second outer wall portion 1222, the first outer wall portion 1221 is located above the second outer wall portion 1222 in the height direction H of the control valve, the first outer wall portion 1221 is in clearance fit with the peripheral wall portion 1230 of the sleeve 123, the second outer wall portion 1222 is disposed opposite to the annular protrusion 1242, and the second outer wall portion 1222 is in clearance fit with the annular protrusion 1242, and the second core 122 can move up and down relative to the inner wall of the sleeve 123 and the annular protrusion 1242.
The second core 122 has a third peripheral wall 1224, the third peripheral wall 1224 connects the first outer wall 1221 and the second outer wall 1222, the first outer wall 1221 has an outer diameter larger than the second outer wall 1222 and the third peripheral wall 1224, and the third peripheral wall 1224 is spaced apart from the annular projection 1242. The third peripheral wall 1224 is located above the annular protrusion 1242 and spaced from the annular protrusion 1242, which helps to ensure the precision of the assembly of the second core and the valve seat, and effectively ensures the precision of the valve.
The annular protrusion 1242 has a first wall portion 1242a and a second wall portion 1242b, the first wall portion 1242a facing the second core 122, the first wall portion 1242a being clearance-fitted to the second core 122, the second wall portion 1242b facing away from the second core 122, the second wall portion 1242b facing the peripheral wall portion 1230, and at least a portion of the peripheral wall portion 1230 is weld-fixed to at least a portion of the second wall portion 1242 b.
The peripheral wall portion 1230 includes an inner wall 1234 and a bottom wall 1235, the inner wall 1234 of the peripheral wall portion 1230 is disposed opposite the second wall portion 1242b, and at least a portion of the inner wall 1234 of the peripheral wall portion 1230 is welded to at least a portion of the second wall portion 1242 b. The bottom wall 1235 may be loosely fitted to the body 1241, and the bottom wall 1235 may be also fitted in contact with the body 1241.
The first core 121 is made of a soft magnetic stainless steel material, the second core 122 is made of a soft magnetic stainless steel material, the valve seat 124 is made of a stainless steel material, the sleeve 123 is made of a stainless steel material, the second outer wall portion 1212 and the peripheral wall portion 1230 are at least partially welded and fixed by laser welding, and the peripheral wall portion 1230 and the second wall portion 1242b are at least partially welded and fixed by laser welding. The thickness of the sleeve 123 is between 0.3mm and 0.8mm, and the thickness of the sleeve 123 may be 0.5mm and 0.6 mm.
The first core 121 has a bottom portion 1213, the second core 122 has a top portion 1223, one end of the spring 125 abuts against the bottom portion 1213, the second outer wall portion 1212 is welded and fixed to the peripheral wall portion 1230 of the sleeve 123, a distance between the welding position W2 formed by welding in the height direction H and the bottom portion 1213 is not less than 5mm, and a distance between the welding position W2 and the first outer wall portion 1211 is not less than 5mm, which contributes to improving the welding quality of the peripheral wall portion 1230 and the first core 121.
The body portion 1241 has a surface portion 1241a, and the distance between the welding position W1 of the peripheral wall portion 1230 and the second wall portion 1242b and the surface portion 1241a is in the range of 1.2-2 mm. Here, the distance between the welding position W1 and the surface portion 1241a is calculated with the welding position at the center in the control valve height direction H. The second core body 122 and the valve seat 124 are arranged in a split mode, the valve seat 124 is made of stainless steel materials which are not prone to rusting, the second core body is made of soft magnetic stainless steel materials, manufacturing cost of the control valve is reduced, and compared with the fact that the second core body 122 and the valve seat 124 are made of soft magnetic stainless steel materials integrally, cost input of materials is reduced.
Since the sleeve and the valve seat are laser-welded and the sleeve and the second core body are laser-welded, the distance between the welding position W1 of the peripheral wall portion 1230 and the second wall portion 1242b and the surface portion 1241a is in the range of 1.2-2mm, which helps the argon shield gas to concentrate at the welding position during the laser welding, helps the stability of the welding quality and the improvement of the service life of the control valve. If the distance between the welding position W1 and the surface part 1241a is very close, argon shield gas is easily affected by the structure of the surface part 1241a or the sleeve structure during welding, and the argon shield gas is difficult to concentrate at the welding position, so that the welding quality is poor and the product performance is affected.
The annular protrusion 1242 has a ceiling wall 1245, and the height of the ceiling wall 1245 in the height direction H of the control valve is not less than 10.5 mm from the welding position w10.5mm between the peripheral wall 1230 and the second wall 1242 b. If the dome wall 1245 and the welding position W1 are flush in the height direction H, the weld between the sleeve and the second core is likely to fall off, which affects the product performance.
Referring to fig. 8, fig. 8 illustrates a schematic structural view of the control valve 200; the control valve 200 includes a valve body 11, a valve core assembly 12, a coil portion 13, and a fixing frame 14, wherein the valve body 11 includes an accommodating cavity 114 and a mounting cavity 115, and at least a portion of the valve core assembly 12 is located in the accommodating cavity 114.
The control valve 200 comprises a power head element 201, a valve rod 202, a valve ball 203 and an adjusting seat assembly 204, wherein the direction of an installation cavity 115 arranged on the valve body 11 is taken as the axial direction A of the valve body, the valve rod 202 and the valve ball 203 are positioned in the installation cavity 115, at least part of the power head element 201 is positioned in the installation cavity 115, and at least part of the adjusting seat assembly 204 is positioned in the installation cavity 115; the power head element 201 drives the valve rod 202 to move axially, and the valve ball 203 moves axially under the action of the adjusting seat assembly 204 and the valve rod 202;
the control valve 200 includes a coil portion 13 and a fixing frame 14, the coil portion 13 is located at the outer periphery of the valve core assembly 12, the fixing frame 14 has an upper wall portion 141 and a lower wall portion 142, the upper wall portion 141 and the lower wall portion 142 surround the coil portion 13, the valve core assembly 12 passes through a middle through hole 1421 of the lower wall portion 142, and the height of the valve core assembly 12 does not exceed the height of the upper wall portion 142. In this way, the height of the control valve in the height direction H is reduced compared to the embodiment shown in fig. 1, which contributes to downsizing of the control valve structure.
The control valve 200 can be used in a refrigeration system for throttling refrigerant, the valve core assembly 12 can be used for stopping the control valve 200, and the control valve 200 can be a thermal expansion valve with a stopping function.
Referring to fig. 9, fig. 9 illustrates a schematic structural view of the control valve 300; the control valve 300 comprises a valve body 11, a valve core assembly 12, a coil part 13 and a fixing frame 14, wherein the valve body 11 comprises an accommodating cavity 114 and a mounting cavity 115, and at least part of the valve core assembly 12 is located in the accommodating cavity 114.
The control valve 300 comprises a power head element 201, a valve rod 202, a valve ball 203 and an adjusting seat assembly 204, wherein the direction of an installation cavity 115 arranged on the valve body 11 is taken as the axial direction A of the valve body, the valve rod 202 and the valve ball 203 are positioned in the installation cavity 115, at least part of the power head element 201 is positioned in the installation cavity 115, and at least part of the adjusting seat assembly 204 is positioned in the installation cavity 115; the power head element 201 drives the valve rod 202 to move axially, and the valve ball 203 moves axially under the action of the adjusting seat assembly 204 and the valve rod 202;
the control valve 300 includes a coil portion 13 and a fixing frame 14, the coil portion 13 is located at the outer periphery of the valve core assembly 12, the fixing frame 14 has an upper wall portion 141 and a lower wall portion 142, the upper wall portion 141 and the lower wall portion 142 surround the coil portion 13, the valve core assembly 12 passes through a middle through hole 1421 of the lower wall portion 142, and the height of the valve core assembly 12 does not exceed the height of the upper wall portion 142.
The fixing bracket 14 has a fixing hole 143, the fixing hole 143 is located in the lower wall portion 142, the fixing hole 143 is located outside the coil portion 13, the control valve 300 includes a fixing member 15, the fixing member 15 extends into the fixing hole 143, and the fixing member 15 is fixed to the valve body 11. The coil portion 13 may be fixed to the valve body 11 by a screw-like structure protruding into the fixing hole 143.
The following brief summary describes the method of manufacturing the above control valve, including the steps of:
providing a valve seat comprising an annular projection,
providing a sleeve, a first core body and a second core body, and sleeving the sleeve outside at least parts of the first core body and the second core body, wherein the first core body is in clearance fit with the sleeve;
sleeving the sleeve outside the annular bulge of the valve seat;
the height of the sleeve is adjusted by adjusting the part of the sleeve sleeved outside the annular bulge;
the peripheral wall portion of the sleeve is welded to a portion of the first core, and the peripheral wall portion of the sleeve is welded to the annular projection portion. Some of the specific requirements have been described above and will not be described in detail here.
It should be noted that: although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that various combinations, modifications and equivalents of the present invention can be made by those skilled in the art, and all technical solutions and modifications thereof without departing from the spirit and scope of the present invention are encompassed by the claims of the present invention.

Claims (12)

1. A control valve comprises a valve body and a valve core assembly, wherein the valve core assembly comprises a sleeve, a first core body, a second core body and a valve seat, and at least parts of the first core body and the second core body are accommodated in the sleeve; it is characterized in that the preparation method is characterized in that,
the sleeve has a peripheral wall portion, and at least part of the first core is welded and fixed with the peripheral wall portion;
the valve seat comprises a main body part and an annular bulge, wherein the annular bulge protrudes out of the main body part, an opening of the annular bulge is formed, at least part of the annular bulge extends into the sleeve, the annular bulge is provided with a first wall part and a second wall part which are oppositely arranged, the first wall part faces the second core body, the second wall part faces away from the second core body, at least part of the second wall part is welded and fixed with the peripheral wall part, the lower end of the second core body extends into the annular bulge, the second core body is in clearance fit with the peripheral wall part, and the clearance fit part of the second core body and the peripheral wall part is located between the welding position of the second wall part and the peripheral wall part and the welding position of the first core body and the peripheral wall part.
2. The control valve of claim 1, wherein:
the sleeve has a top, the first core has a first outer wall portion and a second outer wall portion, the first outer wall portion of the first core is relatively close to the top, the first outer wall portion of the first core is in clearance fit with the peripheral wall portion of the sleeve, and at least part of the second outer wall portion of the first core is welded and fixed with the peripheral wall portion of the sleeve;
the first core has a bottom, the second core has a top, a distance between a welding position where at least a portion of the second outer wall portion of the first core and the peripheral wall portion are welded in a height direction and the bottom of the first core is not less than 5mm, and a distance between the welding position and the first outer wall portion of the first core is not less than 5 mm.
3. The control valve of claim 1, wherein:
the second core body is provided with a first outer wall part and a second outer wall part, the first outer wall part of the second core body is arranged opposite to the peripheral wall part of the sleeve, the first outer wall part of the second core body is in clearance fit with the peripheral wall part, the clearance fit part of the second core body and the peripheral wall part comprises the first outer wall part, the second outer wall part of the second core body is arranged opposite to the annular bulge, and the second outer wall part of the second core body is in clearance fit with the annular bulge;
the second core body is provided with a third peripheral wall which connects the first outer wall part and the second outer wall part, the outer diameter of the first outer wall part is larger than that of the second outer wall part and the third peripheral wall, and the third peripheral wall and the annular bulge part are arranged at intervals.
4. The control valve of claim 1, wherein:
the peripheral wall part comprises an inner wall and a bottom wall, and the inner wall of the peripheral wall part is opposite to the second wall part;
at least part of the inner wall of the peripheral wall portion is welded and fixed to at least part of the second wall portion; or the second wall part comprises a side wall and a platform wall, the platform wall is positioned on the periphery of the side wall, and the bottom wall of the peripheral wall part is welded and fixed with at least part of the platform wall.
5. The control valve according to claim 1 or 2, characterized in that: the first core body is made of soft magnetic stainless steel materials, the second core body is made of soft magnetic stainless steel materials, the valve seat is made of stainless steel materials, the sleeve is made of stainless steel materials, at least part of the first core body and at least part of the peripheral wall portion are welded and fixed in a laser welding mode, and at least part of the peripheral wall portion and at least part of the second wall portion are welded and fixed in a laser welding mode;
the valve seat comprises a main body part and the annular bulge, the annular bulge protrudes out of the main body part, the main body part is provided with a surface part, and the distance between the welding position of the peripheral wall part and the second wall part and the surface part is within the range of 1.2-2 mm.
6. The control valve of claim 4, wherein: the valve seat comprises a main body portion and an annular protruding portion, wherein the annular protruding portion protrudes out of the main body portion, at least part of the inner wall of the peripheral wall portion is welded and fixed with at least part of the second wall portion, the annular protruding portion is provided with a convex top wall, and the height of the convex top wall exceeds the welding position of the peripheral wall portion and the second wall portion by more than 0.5mm in the height direction of the control valve.
7. The control valve of claim 4, wherein: the valve seat comprises a main body portion and an annular protruding portion, the annular protruding portion protrudes out of the main body portion, the annular protruding portion is provided with a convex top wall, the height direction of the control valve is in the control valve, the second wall portion further comprises an outer wall, the outer wall of the second wall portion is aligned with the outer wall of the peripheral wall portion, and the height of the convex top wall exceeds the bottom wall of the peripheral wall portion and the at least partial welding position of the platform wall by more than 0.5 mm.
8. The control valve according to any one of claims 1 to 7, wherein: the valve body comprises an accommodating cavity, an inlet and an outlet, at least part of the valve core assembly is inserted into the accommodating cavity, and the valve core assembly is communicated with or closes the inlet and the outlet in an action manner;
the control valve comprises a coil part and a fixed frame, wherein the coil part is positioned on the periphery of the valve core assembly, the fixed frame is provided with an upper wall part and a lower wall part, the upper wall part and the lower wall part surround the coil part, the valve core assembly penetrates through a through hole in the middle of the lower wall part, and the height of the valve core assembly does not exceed the height of the upper wall part.
9. The control valve according to any one of claims 1 to 7, wherein: the valve body comprises an accommodating cavity and a mounting cavity, and at least part of the valve core assembly is positioned in the accommodating cavity;
the control valve comprises a power head element, a valve rod, a valve ball and an adjusting seat assembly, wherein the direction of the valve body in which the installation cavity is arranged is taken as the axial direction of the valve body, the valve rod and the valve ball are positioned in the installation cavity, at least part of the power head element is positioned in the installation cavity, and at least part of the adjusting seat assembly is positioned in the installation cavity; the power head element drives the valve rod to move axially, and the valve ball moves axially under the action of the adjusting seat assembly and the valve rod;
the control valve comprises a coil part and a fixing frame, the coil part is located on the periphery of the valve core assembly, the fixing frame is provided with an upper wall part and a lower wall part, the upper wall part and the lower wall part surround the coil part, the valve core assembly penetrates through a through hole in the middle of the lower wall part, the height of the valve core assembly does not exceed the height of the upper wall part, the fixing frame is provided with a fixing hole, the fixing hole is located in the lower wall part, the fixing hole is located outside the coil part, the control valve comprises a fixing part, the fixing part extends into the fixing hole, and the fixing part is fixed with the valve body.
10. The control valve of claim 1, wherein:
the sleeve has a top, the first core has a first outer wall portion and a second outer wall portion, the first outer wall portion of the first core is relatively close to the top, the first outer wall portion of the first core is in clearance fit with the peripheral wall portion of the sleeve, and at least part of the second outer wall portion of the first core is welded and fixed with the peripheral wall portion of the sleeve;
the first core has a bottom, the second core has a top, a distance between a welding position where at least part of the second outer wall of the first core and the peripheral wall are welded in the height direction and the bottom of the first core is not less than 5mm, and a distance between the welding position and the first outer wall of the first core is not less than 5 mm;
the second core has a first outer wall portion and a second outer wall portion, the first outer wall portion of the second core is disposed opposite to the peripheral wall portion of the sleeve and is in clearance fit with the peripheral wall portion, the second outer wall portion of the second core is disposed opposite to the annular projection, and the second outer wall portion of the second core is in clearance fit with the annular projection;
the second core body is provided with a third peripheral wall which connects the first outer wall part and the second outer wall part, the outer diameter of the first outer wall part is larger than that of the second outer wall part and the third peripheral wall, and the third peripheral wall and the annular bulge part are arranged at intervals;
the peripheral wall part comprises an inner wall and a bottom wall, and the inner wall of the peripheral wall part is opposite to the second wall part;
at least part of the inner wall of the peripheral wall portion is welded and fixed to at least part of the second wall portion; or the second wall part comprises a side wall and a platform wall, the platform wall is positioned on the periphery of the side wall, and the bottom wall of the peripheral wall part is welded and fixed with at least part of the platform wall;
the first core body is made of soft magnetic stainless steel materials, the second core body is made of soft magnetic stainless steel materials, the valve seat is made of stainless steel materials, the sleeve is made of stainless steel materials, at least part of the first core body and at least part of the peripheral wall portion are welded and fixed in a laser welding mode, and at least part of the peripheral wall portion and at least part of the second wall portion are welded and fixed in a laser welding mode;
the valve seat comprises a main body part and the annular bulge, the annular bulge is bulged out of the main body part, the main body part is provided with a surface part, and the distance between the welding position of the peripheral wall part and the second wall part and the surface part is in the range of 1.2-2 mm;
the valve seat includes the main part with annular bulge, annular bulge protrusion in the main part, annular bulge stretches into inside the sleeve, at least part of the inner wall of wall portion all around with at least part welded fastening of second wall portion, annular bulge has the dome the direction of height of control valve, the height of dome exceeds all around wall portion with the welded position 0.5mm of second wall portion is more than or the second wall portion still includes the outer wall, the outer wall of second wall portion with the outer wall of wall portion all around aligns the setting, the height of dome exceeds all around the diapire of wall portion with the at least partial welded position 0.5mm of platform wall is more than.
11. A method of manufacturing a control valve comprising the steps of:
providing a valve seat comprising an annular projection,
providing a sleeve, a first core body and a second core body, and sleeving the sleeve outside at least parts of the first core body and the second core body, wherein the first core body is in clearance fit with the sleeve;
sleeving the sleeve outside the annular bulge of the valve seat;
the height of the sleeve is adjusted by adjusting the part of the sleeve sleeved outside the annular bulge;
the peripheral wall portion of the sleeve is welded to a portion of the first core, and the peripheral wall portion of the sleeve is welded to the annular projection portion.
12. The manufacturing method of a control valve according to claim 11, characterized in that:
the distance between the welding position W2 formed by welding the first core and the peripheral wall part of the sleeve and the bottom of the first core in the height direction H is not less than 5mm, and the distance between the welding position W2 and the first outer wall part of the first core is not less than 5 mm;
the second core body is made of soft magnetic stainless steel materials, the first core body is made of soft magnetic stainless steel materials, the valve seat is made of stainless steel materials, and the sleeve is made of stainless steel materials;
the valve seat has a surface portion, and the distance between the welding position W1 of the peripheral wall portion of the valve seat and the second wall portion of the annular projection and the surface portion 1241a of the valve seat is in the range of 1.2-2 mm;
the annular protrusion part is provided with a convex top wall, and the height of the convex top wall exceeds the welding position W10.5mm of at least part of the bottom wall of the peripheral wall part and the platform wall of the annular protrusion part in the height direction H of the control valve.
CN201911052987.0A 2019-10-31 2019-10-31 Control valve and manufacturing method thereof Pending CN112747129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911052987.0A CN112747129A (en) 2019-10-31 2019-10-31 Control valve and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911052987.0A CN112747129A (en) 2019-10-31 2019-10-31 Control valve and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN112747129A true CN112747129A (en) 2021-05-04

Family

ID=75644619

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911052987.0A Pending CN112747129A (en) 2019-10-31 2019-10-31 Control valve and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN112747129A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114776821A (en) * 2022-05-11 2022-07-22 浙江三花智能控制股份有限公司 Electromagnetic valve body and assembling method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114776821A (en) * 2022-05-11 2022-07-22 浙江三花智能控制股份有限公司 Electromagnetic valve body and assembling method thereof
CN114776821B (en) * 2022-05-11 2023-12-15 浙江三花智能控制股份有限公司 Electromagnetic valve body and assembly method thereof

Similar Documents

Publication Publication Date Title
US8181668B2 (en) Pressure reducing valve for gas
EP1860357B1 (en) Seat block and valve device
KR102375852B1 (en) solenoid valve
US20230417339A1 (en) Valve core assembly
KR20200066709A (en) Solenoid valve
CN112747129A (en) Control valve and manufacturing method thereof
JPH04244681A (en) Electromagnetic valve
EP1284384B1 (en) Solenoid for solenoid valve
CN112747163A (en) Control valve and manufacturing method thereof
US6929240B2 (en) Solenoid valve
CN210566265U (en) Solenoid valve and solenoid valve subassembly
JP3753003B2 (en) Solenoid actuator with shaft
KR102313777B1 (en) Electric valve and its manufacturing method
JP2003056739A (en) Solenoid valve
JP2010196885A (en) Damping force adjustment type hydraulic shock absorber and method of manufacturing the same
EP4067713A1 (en) Power element and expansion valve using same
JP6945504B2 (en) Electric valve and refrigeration cycle system
JPH09236185A (en) Control valve
CN217502627U (en) Electromagnetic valve
JPH05141560A (en) Fluid control valve
JPH05141561A (en) Fluid control valve
WO2023219028A1 (en) Solenoid, solenoid valve, suspension device, and method for assemblying solenoid
CN218000434U (en) Electromagnetic valve
CN114776821B (en) Electromagnetic valve body and assembly method thereof
KR102098387B1 (en) A solenoid valve

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