CN206874928U - A kind of heavy caliber electric expansion valve - Google Patents
A kind of heavy caliber electric expansion valve Download PDFInfo
- Publication number
- CN206874928U CN206874928U CN201720283325.4U CN201720283325U CN206874928U CN 206874928 U CN206874928 U CN 206874928U CN 201720283325 U CN201720283325 U CN 201720283325U CN 206874928 U CN206874928 U CN 206874928U
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- China
- Prior art keywords
- nut
- bearing
- electric expansion
- heavy caliber
- expansion valve
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Abstract
The utility model discloses a kind of heavy caliber electric expansion valve, including the valve body with fluid intake and fluid issuing, the fluid intake and fluid issuing are by connecting opening connection, the connection opening is controlled the size of opening by volume control device, the volume control device includes valve element, the screw rod being connected with valve element, the nut coordinated with screw flight, nut rotation is driven so that screw rod moves up and down with movable valve plug realizes the magnet rotor of openings of sizes control, the magnet rotor is in sleeve pipe, described sleeve pipe is externally provided with the coil that driving magnet rotor rotates, the nut is fixed on bearing and bearing is opened with thread portion of nut dislocation upwards in nut shaft.The utility model reduces nut and screw flight friction force using nut outboard bearing structure, because bearing and thread portion of nut dislocation are opened, the influence brought when the inner ring of bearing can be prevented to be interference fitted with nut thread position, with this effective reduction nut and screw flight friction force and interference.
Description
Technical field
It the utility model is related to air-conditioning technical, and in particular to for adjusting the electronic expansion of fluid flow in refrigeration system
Valve.
Background technology
As a kind of common electric expansion valve, using coil drive magnet rotor, magnet rotor drives nut rotation, makes screw rod
Move up and down, promote valve element to move up and down, openings of sizes control is realized, so as to realize the regulation of flow.Due to nut and screw rod
Screw thread friction force it is larger, have impact on the reaction speed and control accuracy of electric expansion valve to a certain extent.
Utility model content
Technical problem to be solved in the utility model is just to provide a kind of heavy caliber electric expansion valve, reduces nut and spiral shell
The screw thread friction force of bar.
In order to solve the above technical problems, the utility model adopts the following technical scheme that：A kind of heavy caliber electric expansion valve, bag
The valve body with fluid intake and fluid issuing is included, the fluid intake and fluid issuing are by connecting opening connection, the company
Connect opening by volume control device control opening size, the volume control device include valve element, be connected with valve element screw rod,
Nut, the drive nut rotation coordinated with screw flight realizes openings of sizes control so that screw rod moves up and down with movable valve plug
Magnet rotor, for the magnet rotor in sleeve pipe, described sleeve pipe is externally provided with the coil that driving magnet rotor rotates, and the nut is fixed on
On bearing and bearing is opened with thread portion of nut dislocation upwards in nut shaft.
Preferably, the valve element includes valve rod and the flap located at valve rod head, and the rear portion of the valve rod is consolidated provided with screw thread
Determine hole, screw head is pressed abd fixed on the gland in threaded securing bores by the threaded securing bores threaded connection one.
Preferably, the valve body is connected with bonnet, and the bonnet is connected with pilot sleeve, the guide sleeve away from valve body end
Cylinder and sleeve pipe connection, the screw rod pass through from pilot sleeve.
Preferably, the bearing is positioned on the positioning step of pilot sleeve endoporus, and the pilot sleeve is above bearing
Provided with bushing or union (screwed)bonnet (UB, the bottom of the nut is provided with locating flange, the bearing and bushing or union (screwed)bonnet (UB it
Between be provided with spring so that locating flange abuts with bearing lower surface.
Preferably, the valve body is connected with bonnet, and the positioning step that locating shaft is held is equipped with the upper oral part of the bonnet,
The inner ring of the bearing is in interference fit with the nut fixation, and the nut, which is provided with, presses bearing fixed pressing flange.
Preferably, the bearing is provided with two, and the nut is provided with the separation bulge loop for separating two bearings.
Preferably, primary seal and auxiliary sealing member are provided between the valve rod and bonnet.
Preferably, the main sealing assembly is combined by the PTFE of O-ring and O-ring outer rim side and formed, the auxiliary seal
Component is O-ring.
Preferably, the head of the flap is provided with hexagonal balance pipe, and screen pack is embedded with the balance pipe.
Preferably, the nut is connected with support, and the support is provided with hook, and the nut is provided with anticreep step, described
Hook is hooked together at anticreep step.
The technical solution adopted in the utility model, nut and screw flight pair are reduced using nut outboard bearing structure
Frictional force.Further, bearing is opened with thread portion of nut dislocation upwards in nut shaft, and the design so to stagger can prevent bearing
The influence that brings when being interference fitted of inner ring and nut thread position, nut effective is reduced and screw flight is secondary rubs with this
Power and interference.
In addition, bearing inner ring is in interference fit with the nut, and outer race is pressed and is fixed in bonnet or pilot sleeve
In, it can effectively prevent the loosening of bearing.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings and detailed description：
Fig. 1 is the structural representation of the utility model embodiment 1；
Fig. 2 is the structural representation of the utility model embodiment 2；
Fig. 3 is the structural representation of the utility model embodiment 3；
Fig. 4 is the structural representation of the utility model embodiment 4.
Embodiment
The technical scheme of the utility model embodiment is explained with reference to the accompanying drawing of the utility model embodiment and
Illustrate, but following embodiments are only preferred embodiment of the present utility model, and it is not all.Based on the embodiment in embodiment,
Those skilled in the art obtain other embodiment on the premise of creative work is not made, and belong to of the present utility model
Protection domain.
Embodiment 1, as depicted in figs. 1 and 2, a kind of heavy caliber electric expansion valve, including with fluid intake 101 and fluid
The valve body 10 of outlet 102, the fluid intake 101 and fluid issuing 102 are by connecting opening connection, and the connection opening is by flowing
The size of the control opening of amount control device 100, valve body 10 are arranged in adapter 1.The volume control device 100 includes valve element
11st, screw arbor assembly 12, magnetic rotor component 13, valve element 11 include valve rod 111 and the flap 112 located at valve rod head, screw arbor assembly
12 include the nut 121 that screw rod 122 coordinates with screw flight, and magnetic rotor component 13 includes magnet rotor 131, sleeve pipe 132, around set
The magnet rotor coil 133 of pipe 132, screw rod 122 are connected with valve rod 111, and the top of sleeve pipe 132 is provided with cover plate 134.Coil 133 drives
Dynamic magnet rotor, magnet rotor drive nut rotation, screw rod is moved up and down, and promote valve element to move up and down, realize openings of sizes control,
So as to realize the regulation of flow.
Wherein, nut 121 is fixed on bearing 123 and screw thread of the bearing 123 in the axial direction of nut 121 with nut 121
Stagger at position.Nut 121 is fixed on the screw thread friction force that can reduce nut 121 and screw rod 122 on bearing 123, and bearing
123 can prevent the inner ring of bearing 123 and the screw thread position interference of nut 121 from matching somebody with somebody with the design that the screw thread position of nut 121 staggers
The influence brought during conjunction, with this effective screw thread friction force for reducing nut 121 and screw rod 122 and interference.
Valve body 10 is connected with bonnet 14, and bonnet 14 is connected with liquid-sighting glass 103.In the present embodiment, bonnet 14 is away from valve body
End is connected with pilot sleeve 15, and pilot sleeve 15 is connected with sleeve pipe 132, and screw rod 122 passes through from pilot sleeve 15.Pilot sleeve 15
The guide section 151 moved axially provided with screw 122, and diameter are more than guide section 151 and the nut being connected with nut 121
Construction section 152, bearing 123 are positioned at pilot sleeve endoporus and are located on the positioning step 153 of nut construction section 152.
In order to which bearing 123 is fixed, the nut construction section 153 of pilot sleeve 15 be provided with above bearing 123 bushing or
Union (screwed)bonnet (UB 125, the bottom of nut 121 are provided with locating flange 1211, set between bearing 123 and bushing or union (screwed)bonnet (UB 125
There is spring 124 so that locating flange 1211 abuts with bearing lower surface, bearing is realized and is fixed by elastic compression.Using screw thread
Gland advantage is：It is easy for installation, for fastening bearing, also convenient dismounting later.
Pilot sleeve 15, using being welded to connect, it is logical with valve body 10 with the component of bonnet 14 to be then directed to sleeve 15 with bonnet 14
Cross threaded connection to fix, bonnet 14 is sealed with valve body 10 by O-ring.Parts are few, and easy for installation, and axiality is good.Lead
Processed to sleeve 15 using stainless steel, intensity increase.
At present valve rod 111 between bonnet 14 only have together with seal, sealing property is not good enough, impurity have destroy seal can
Can, therefore, the present embodiment uses two seals, and primary seal 1111 and auxiliary sealing member are provided between valve rod 111 and bonnet 14
1112.Primary seal 1111 is combined by the PTFE of O-ring and O-ring outer rim side and formed, and auxiliary sealing member 1112 is O-ring.It is main
Seal 1111 use O-ring+PTFE combined type packing rings, the life-span up to more than 1,000,000 times, for prevent impurity enter to primary seal
The destruction of part, auxiliary sealing member 1112 is devised, using PTEF materials, cause sealing to be lost for preventing the entrance of particulate matter
Effect.
Further, the head of flap 112 is provided with hexagonal balance pipe 1211, to reduce fluid rushing to flap 112
Hit, simultaneously, it is contemplated that the influence of particulate matter may be flowed into, balance pipe 1211 is embedded with screen pack, avoids impurity from passing through balance pipe
1211 enter in flap.
Embodiment 2, as shown in Fig. 2 being with the difference of embodiment 1, and pilot sleeve 15 is not provided with, while improves axle
123 fixed form is held, specifically, the positioning step 142 that locating shaft holds 123, bearing are equipped with the upper oral part of bonnet 14
123 inner ring is fixed with the interference fit of nut 121, and nut 121, which is provided with, is fixed on the pressing of bearing 123 on positioning step 142
Press flange 1212 so that bearing 123 is reliably fixed, and compared with Example 1, parts are reduced, by bearing with
Bonnet is directly loadable into after nut close-fitting, it is convenient for assembly, therefore in cost advantageously.
In addition, screw rod 122 moves up and down with movable valve plug 11, valve is helped to open and close, to prevent screw rod 122 from departing from valve element
11, pressure ring 1221 is designed at screw head, the rear portion of valve rod is provided with threaded securing bores, and gland 113 is threaded in screw thread and consolidated
Determine to compress pressure ring 1221 in hole, so as to which screw rod 122 is fixed in threaded securing bores, reach the work for preventing that screw rod 122 from coming off
With.
Embodiment 3, further improvement is made on the basis of embodiment 2, as shown in figure 3, nut 121 connects with support 135
Connect, support 135 is provided with hook 1351, and nut 121 is provided with anticreep step, and hook 1351 is hooked together at anticreep step.First by nut
121 are fitted on bearing 123, and then the interference of nut 121 is pressed at magnet rotor 131, the other end of nut 121 be pressed again in
On support 135, effectively prevent magnet rotor 131 from departing from nut 121；Support 135 is pressed into magnet rotor 131 and can be described as magnetic rotor component,
Magnetic rotor component is pressed into the lump in the endoporus of bonnet 14 fixed, it is possible to reduce product component, it is cost-effective, it is easily installed.
Embodiment 4, the embodiment can use the technical scheme of embodiment 2 or 3, moreover, as shown in figure 4, as upper
The further improvement of embodiment is stated, bearing 123 can be provided with two, while nut 121 is provided with point for separating two bearings 123
Every bulge loop.Compared with being separately provided a bearing 123, two bearings 123 rub in the screw thread pair for reducing nut 121 and screw rod 122
In terms of wiping power, effect is more obvious.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, it is familiar with the those skilled in the art and should be understood that the utility model includes but is not limited to accompanying drawing and above specific embodiment party
Content described in formula.Any modification without departing from function and structure principle of the present utility model is intended to be included in claims
Scope in.
Claims (10)
1. a kind of heavy caliber electric expansion valve, including the valve body with fluid intake and fluid issuing, the fluid intake and stream
Body outlet is controlled the size of opening, the flow control by volume control device by connecting opening connection, the connection opening
Device is including valve element, the screw rod being connected with valve element, the nut coordinated with screw flight, drive nut rotation so that screw rod drives
Valve element, which moves up and down, realizes the magnet rotor of openings of sizes control, and for the magnet rotor in sleeve pipe, described sleeve pipe is externally provided with driving
The coil that magnet rotor rotates, it is characterised in that：The nut be fixed on bearing and bearing in nut shaft upwards and nut thread
Stagger at position.
A kind of 2. heavy caliber electric expansion valve according to claim 1, it is characterised in that：The valve element includes valve rod and set
Flap in valve rod head, the rear portion of the valve rod are provided with threaded securing bores, and the threaded securing bores are threadedly coupled one by screw rod
Head is pressed abd fixed on the gland in threaded securing bores.
A kind of 3. heavy caliber electric expansion valve according to claims 1 or 2, it is characterised in that：The valve body is connected with
Bonnet, the bonnet are connected with pilot sleeve, the pilot sleeve and sleeve pipe connection away from valve body end, and the screw rod is from guide sleeve
Cylinder passes through.
A kind of 4. heavy caliber electric expansion valve according to claim 3, it is characterised in that：The bearing is positioned at guide sleeve
On the positioning step of cylinder endoporus, the pilot sleeve is provided with bushing or union (screwed)bonnet (UB, the bottom of the nut above bearing
Spring is provided with provided with locating flange, between the bearing and bushing or union (screwed)bonnet (UB so that locating flange supports with bearing lower surface
Connect.
A kind of 5. heavy caliber electric expansion valve according to claims 1 or 2, it is characterised in that：The valve body is connected with
Bonnet, the positioning step that locating shaft is held is equipped with the upper oral part of the bonnet, the inner ring of the bearing is in interference fit with the nut
Fixed, the nut, which is provided with, presses bearing fixed pressing flange.
A kind of 6. heavy caliber electric expansion valve according to claim 5, it is characterised in that：The bearing is provided with two, institute
State nut and be provided with the separation bulge loop for separating two bearings.
A kind of 7. heavy caliber electric expansion valve according to claim 2, it is characterised in that：Set between the valve rod and bonnet
There are primary seal and auxiliary sealing member.
A kind of 8. heavy caliber electric expansion valve according to claim 7, it is characterised in that：The main sealing assembly is by O-shaped
Circle and the PTFE of O-ring outer rim side combine to be formed, and the auxiliary seal component is O-ring.
A kind of 9. heavy caliber electric expansion valve according to claim 2, it is characterised in that：The head of the flap is provided with six
Angular balance pipe, screen pack is embedded with the balance pipe.
A kind of 10. heavy caliber electric expansion valve according to claim 1, it is characterised in that：The nut is connected with support,
The support is provided with hook, and the nut is provided with anticreep step, and the hook is hooked together at anticreep step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720283325.4U CN206874928U (en) | 2017-03-22 | 2017-03-22 | A kind of heavy caliber electric expansion valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720283325.4U CN206874928U (en) | 2017-03-22 | 2017-03-22 | A kind of heavy caliber electric expansion valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206874928U true CN206874928U (en) | 2018-01-12 |
Family
ID=61327163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720283325.4U Active CN206874928U (en) | 2017-03-22 | 2017-03-22 | A kind of heavy caliber electric expansion valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206874928U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019196063A1 (en) * | 2018-04-12 | 2019-10-17 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| WO2020135162A1 (en) * | 2018-12-25 | 2020-07-02 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and air conditioning system using same |
| CN112539284A (en) * | 2019-09-20 | 2021-03-23 | 浙江三花制冷集团有限公司 | Flow control valve |
-
2017
- 2017-03-22 CN CN201720283325.4U patent/CN206874928U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019196063A1 (en) * | 2018-04-12 | 2019-10-17 | 浙江盾安禾田金属有限公司 | Electronic expansion valve |
| KR20200119288A (en) * | 2018-04-12 | 2020-10-19 | 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 | Electronic expansion valve |
| KR102335760B1 (en) * | 2018-04-12 | 2021-12-06 | 제지앙 둔안 아트피셜 인바이런먼트 컴퍼니 리미티드 | electronic expansion valve |
| WO2020135162A1 (en) * | 2018-12-25 | 2020-07-02 | 浙江盾安人工环境股份有限公司 | Electronic expansion valve and air conditioning system using same |
| US11796234B2 (en) | 2018-12-25 | 2023-10-24 | Zhejiang Dunan Artificial Environment Co., Ltd. | Electronic expansion valve and air conditioning system with electronic expansion valve |
| CN112539284A (en) * | 2019-09-20 | 2021-03-23 | 浙江三花制冷集团有限公司 | Flow control valve |
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