CN204239816U - The four-way change-over valve of double-shaft seal sealing - Google Patents
The four-way change-over valve of double-shaft seal sealing Download PDFInfo
- Publication number
- CN204239816U CN204239816U CN201420625675.0U CN201420625675U CN204239816U CN 204239816 U CN204239816 U CN 204239816U CN 201420625675 U CN201420625675 U CN 201420625675U CN 204239816 U CN204239816 U CN 204239816U
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- China
- Prior art keywords
- shaft seal
- seal
- double
- end bearing
- bearing pedestal
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- Expired - Fee Related
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- Multiple-Way Valves (AREA)
Abstract
The utility model discloses the four-way change-over valve of a kind of double-shaft seal sealing, comprise four-way change valve and spool, surrounding valve body is connected to suction tude, the first arm, outlet pipe, the second arm that spool pilot line is communicated with, described spool two ends are connected to front-end bearing pedestal and rear bearing block, and front-end bearing pedestal end connects reducing motor output shaft; Described front-end bearing pedestal periphery is provided with front cover, is socketed fore bearing, double-shaft seal seal arrangement and gland between front-end bearing pedestal and front cover successively; Described double-shaft seal seal arrangement comprises the first shaft seal, shaft seal chuck, the second shaft seal that are arranged in order, and the first shaft seal and the second shaft seal and front-end bearing pedestal contact jaw are equipped with seal ring and support.The utility model is compressed under gland effect mutually by the first shaft seal, shaft seal chuck, the second shaft seal three, and gland bolt connects front cover.Thus form the double sealing effect of the first shaft seal, the second shaft seal, on the basis increasing seal length, extended the working life of sealing by the jacket structured minimizing rubbing surface of shaft seal.
Description
Technical field
The utility model relates to a kind of valve, the four-way change-over valve of a kind of double-shaft seal sealing specifically.
Background technique
The four-way change-over valve of the current apparatus of air conditioning forms primarily of four-way air operated reversing valve (main valve), solenoid directional control valve (control valve) and capillary tube.Form movable valve plug by slide block, piston in main valve, valve body of main valve two ends have through hole that the capillary tube at two ends can be made to be connected with valve intracorporeal space, and slide block two ends are fixed with piston respectively, and the space on piston both sides communicates by the exhaust port on piston.Control valve is made up of valve body and electromagnetic coil.Needle-like spool is had in valve body.There are three (or four) capillary tubies to be connected between main valve with control valve, form the entirety of four-way change-over valve.The four-way change-over valve not only complex structure of this kind of structure, and often easily there is the technical problems such as blocking, leakage in capillary tube.Although also having four way ball valve structure at present for four-way change-over valve there is not the technical problems such as blocking in it, but its four passage flow duct of traditional ball-valve structure controls to be two, and vertically crossing runner switching is through, and the four-way change-over valve of the apparatus of air conditioning must be four runner interfaces is all through, and these four runners can change runner direction according to valve element position, the ball valve of conventional construction grosses incompetence thus.How to simplify the technical pattern of four-way change-over valve, prevent the technical problems such as stuck, gas blowby, blocking, leakage is the object that those skilled in the art study always.
Summary of the invention
The utility model provides that a kind of structure is simple, long service life, technical failure are few, the four-way change-over valve of the double-shaft seal sealing of Leakage prevention.
A kind of four-way change-over valve of double-shaft seal sealing, comprise four-way change valve and spool, surrounding valve body is connected to suction tude, the first arm, outlet pipe, the second arm that spool pilot line is communicated with, described spool two ends are connected to front-end bearing pedestal and rear bearing block, and front-end bearing pedestal end connects reducing motor output shaft; Described front-end bearing pedestal periphery is provided with front cover, is socketed fore bearing, double-shaft seal seal arrangement and gland between front-end bearing pedestal and front cover successively; Described double-shaft seal seal arrangement comprises the first shaft seal, shaft seal chuck, the second shaft seal that are arranged in order, and the first shaft seal and the second shaft seal and front-end bearing pedestal contact jaw are equipped with seal ring and support.This kind of four-way change-over valve is compressed under gland effect mutually by the first shaft seal, shaft seal chuck, the second shaft seal three, and gland bolt connects front cover.Thus form the double sealing effect of the first shaft seal, the second shaft seal, on the basis increasing seal length, extended the working life of sealing by the jacket structured minimizing rubbing surface of shaft seal.First shaft seal and the second shaft seal and front-end bearing pedestal contact jaw are equipped with seal ring and support, bearing structure of sealing ring not only has the conventional effects of sealing front cover, the first shaft seal, the second shaft seal and front-end bearing pedestal, and for the first shaft seal and the second shaft seal, there is inside pressuring action, improve sealing effect further.
As structure preferred shaft seal chuck contact, front cover place is provided with seal groove, and seal groove is embedded in the first seal ring.Described shaft seal chuck does not contact front-end bearing pedestal, reduces area of contact and prevents excessive friction.Shaft seal chuck connects seal ring supporting by location sealing slot fit.First seal ring and bearing structure of sealing ring define the corner seals of shaft seal chuck, further Leakage prevention.
Spool comprises the cylindrical body of upper and lower two proportioning valve intracoelomic cavities, is provided with point chamber muscle of one between two cylindrical bodys; Two cylindrical body exterior edge faces are respectively equipped with location counterbore, location counterbore coordinates front-end bearing pedestal and the rear bearing block of embedding respectively, location counterbore is by screw equally distributed on bottom surface, bolton connects front-end bearing pedestal and rear bearing block, increases spool, the close-fitting installed between front-end bearing pedestal and rear bearing block and installation efficiency.The four-way change-over valve of this kind of double-shaft seal sealing is under point chamber muscle effect of spool, valve body is divided into two chambers, a chamber suction tude and the first arm, another chamber outlet pipe and the second arm, when after Spool rotating, valve body is realized to be divided into two other chamber, a chamber suction tude and the second arm, another chamber outlet pipe and the first arm, thus under the state not changing suction tude and steam outlet pipe, realize the switching of four-way change-over valve, namely the apparatus of air conditioning freezes or heats the switching of two states.It should be noted that suction tude, its effect of outlet pipe are constant all the time in the four-way change-over valve of double-shaft seal sealing at this, namely suction tude enters pressurized gas all the time, and low-pressure gas arranged all the time by outlet pipe, namely two chambers being divided into by point chamber muscle of valve body one of them be high-pressure chamber, another is low-pressure chamber.
The utility model is compressed under gland effect mutually by the first shaft seal, shaft seal chuck, the second shaft seal three, and gland bolt connects front cover.Thus form the double sealing effect of the first shaft seal, the second shaft seal, on the basis increasing seal length, extended the working life of sealing by the jacket structured minimizing rubbing surface of shaft seal.
Accompanying drawing explanation
The four-way change-over valve master being illustrated in figure 1 the sealing of the utility model double-shaft seal looks sectional structure schematic diagram;
To be illustrated in figure 2 in Fig. 1 A-A to sectional structure schematic diagram;
Be illustrated in figure 3 B place sectional structure schematic diagram in Fig. 1.
Embodiment
A kind of four-way change-over valve of double-shaft seal sealing as shown in Figure 1, 2, 3, comprise four-way change valve 2 and spool 1, valve body 2 surrounding is connected to suction tude 3, first arm 7, outlet pipe 9, second arm 8 that spool pilot line is communicated with, spool 1 two ends are connected to front-end bearing pedestal 10 and rear bearing block 6, and front-end bearing pedestal end connects reducing motor 15 output shaft.Front-end bearing pedestal 10 periphery is provided with front cover 14, is socketed fore bearing 11, double-shaft seal seal arrangement and gland 24 between front-end bearing pedestal 10 and front cover 14 successively.Double-shaft seal seal arrangement comprises the first shaft seal 20, shaft seal chuck 22, second shaft seal that are arranged in order, and the first shaft seal 20 and the second shaft seal and front-end bearing pedestal 10 contact jaw are equipped with seal ring and support 23.
Contact front cover 14 place as the preferred shaft seal chuck 22 of structure and be provided with seal groove, seal groove is embedded in the first seal ring 21.Shaft seal chuck 22 does not contact front-end bearing pedestal 10, and shaft seal chuck 22 connects seal ring supporting 23 by location sealing slot fit.
Spool 1 comprises the cylindrical body of upper and lower two proportioning valve intracoelomic cavities, is provided with point chamber muscle of one between two cylindrical bodys; Two cylindrical body exterior edge faces are respectively equipped with location counterbore, and location counterbore coordinates front-end bearing pedestal 10 and the rear bearing block 6 of embedding respectively, and location counterbore is by screw equally distributed on bottom surface, and bolton connects front-end bearing pedestal and rear bearing block.
Claims (4)
1. the four-way change-over valve of a double-shaft seal sealing, comprise four-way change valve and spool, surrounding valve body is connected to suction tude, the first arm, outlet pipe, the second arm that spool pilot line is communicated with, be characterised in that: described spool two ends are connected to front-end bearing pedestal and rear bearing block, front-end bearing pedestal end connects reducing motor output shaft; Described front-end bearing pedestal periphery is provided with front cover, is socketed fore bearing, double-shaft seal seal arrangement and gland between front-end bearing pedestal and front cover successively; Described double-shaft seal seal arrangement comprises the first shaft seal, shaft seal chuck, the second shaft seal that are arranged in order, and the first shaft seal and the second shaft seal and front-end bearing pedestal contact jaw are equipped with seal ring and support.
2. the four-way change-over valve of double-shaft seal sealing as claimed in claim 1, is characterized in that: described shaft seal chuck contact front cover place is provided with seal groove, and seal groove is embedded in the first seal ring.
3. the four-way change-over valve of double-shaft seal sealing as claimed in claim 1, is characterized in that: described shaft seal chuck does not contact front-end bearing pedestal, and shaft seal chuck connects seal ring supporting by location sealing slot fit.
4. the four-way change-over valve of double-shaft seal sealing as claimed in claim 1, is characterized in that: described spool comprises the cylindrical body of upper and lower two proportioning valve intracoelomic cavities, is provided with point chamber muscle of one between two cylindrical bodys; Two cylindrical body exterior edge faces are respectively equipped with location counterbore, and location counterbore coordinates front-end bearing pedestal and the rear bearing block of embedding respectively, and location counterbore is by screw equally distributed on bottom surface, and bolton connects front-end bearing pedestal and rear bearing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420625675.0U CN204239816U (en) | 2014-10-18 | 2014-10-18 | The four-way change-over valve of double-shaft seal sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420625675.0U CN204239816U (en) | 2014-10-18 | 2014-10-18 | The four-way change-over valve of double-shaft seal sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204239816U true CN204239816U (en) | 2015-04-01 |
Family
ID=52769314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420625675.0U Expired - Fee Related CN204239816U (en) | 2014-10-18 | 2014-10-18 | The four-way change-over valve of double-shaft seal sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204239816U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469747A (en) * | 2018-12-26 | 2019-03-15 | 张家港市鑫州焊割机械有限公司 | It relies on oneself and seals two-position four way change valve |
| CN110410538A (en) * | 2019-09-02 | 2019-11-05 | 北京平恩康汽车技术有限公司 | A kind of one-way exhaust valve |
| CN113200362A (en) * | 2021-04-13 | 2021-08-03 | 山东天鹅棉业机械股份有限公司 | Four-way valve |
-
2014
- 2014-10-18 CN CN201420625675.0U patent/CN204239816U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469747A (en) * | 2018-12-26 | 2019-03-15 | 张家港市鑫州焊割机械有限公司 | It relies on oneself and seals two-position four way change valve |
| CN110410538A (en) * | 2019-09-02 | 2019-11-05 | 北京平恩康汽车技术有限公司 | A kind of one-way exhaust valve |
| CN110410538B (en) * | 2019-09-02 | 2024-04-26 | 北京平恩康汽车技术有限公司 | One-way exhaust valve |
| CN113200362A (en) * | 2021-04-13 | 2021-08-03 | 山东天鹅棉业机械股份有限公司 | Four-way valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20171018 |