CN109469747B - Self-sealing two-position four-way reversing valve - Google Patents
Self-sealing two-position four-way reversing valve Download PDFInfo
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- CN109469747B CN109469747B CN201811598760.1A CN201811598760A CN109469747B CN 109469747 B CN109469747 B CN 109469747B CN 201811598760 A CN201811598760 A CN 201811598760A CN 109469747 B CN109469747 B CN 109469747B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
- F16K11/076—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with sealing faces shaped as surfaces of solids of revolution
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a self-sealing two-position four-way reversing valve, which comprises: the valve body is provided with a valve cavity, the valve body is also provided with an air inlet at the rear side, a flue gas outlet at the front side, a left port and a right port which are communicated with the valve cavity, the valve cavity is internally provided with a valve core which can divide the valve cavity into two chambers from top to bottom, the valve core is rotatably arranged in the valve cavity through a vertical shaft and a bearing, the side walls of the valve cavity between the flue gas outlet and the left port, the left port and the air inlet, the air inlet and the right port, and the right port and the flue gas outlet are respectively provided with a sealing flange, the valve core is internally provided with two through cavities, the upper end and the lower end of each through cavity are respectively provided with a self-operated sealing block, a blocking device is arranged between the two self-operated sealing blocks in each through cavity, and the side walls opposite to the air inlet are respectively provided with an air inlet. The reversing valve can enable the tightness of two chambers in the valve cavity to be improved.
Description
Technical Field
The invention relates to the field of reversing valves, in particular to a self-sealing two-position four-way reversing valve.
Background
The existing natural gas regenerative combustion system can use a two-position four-way reversing valve, and the reversing valve can change the flue gas inlet while changing the flow direction of combustion air. The structure of the existing two-position four-way reversing valve comprises: the valve body is internally provided with a valve cavity, the valve body is also respectively provided with an air inlet at the rear side, a flue gas outlet at the front side, a left port and a right port, the air inlet, the flue gas outlet, the left port and the right port are respectively communicated with the valve cavity, the valve cavity is internally provided with a valve core which can divide the valve cavity into two chambers from top to bottom, the valve core is rotatably arranged in the valve cavity through a vertical shaft and a bearing, and valve cavity side walls between the flue gas outlet and the left port, the left port and the air inlet, the air inlet and the right port, the upper end and the lower end of the right port and the flue gas outlet are respectively provided with a sealing flange which is vertically arranged, the upper end and the lower end of the sealing flange are respectively abutted against the upper end and the lower end of the valve cavity and used for abutting against one side of the valve core, the left front sealing flange and the right front sealing flange are respectively staggered in the two chambers of the valve cavity, the left rear sealing flange and the right front sealing flange are respectively staggered in the two chambers of the valve cavity, and each sealing flange and one side of the sealing flange is abutted against one side of the rear side wall, and the sealing flange and the valve core can not be communicated with the side surfaces of the valve cavity.
The two-position four-way reversing valve has the following defects: the sealing flange is used for blocking and sealing the gap between the side face of the valve core and the side wall of the valve cavity, so that two cavities in the valve cavity cannot be communicated through the gap of the side face; however, the gap between the valve core and the upper and lower end surfaces of the valve cavity is not sealed, so that the two chambers in the valve cavity can be communicated through the gap at the upper and lower ends, and the tightness of the two chambers in the valve cavity is poor.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the self-sealing two-position four-way reversing valve can perform self-sealing on the gap between the valve core and the upper end face and the lower end face of the valve cavity.
In order to solve the problems, the invention adopts the following technical scheme: a self-sealing two-position four-way reversing valve comprising: the valve body is provided with a valve cavity, the valve body is also provided with an air inlet at the rear side, a flue gas outlet at the front side, a left port and a right port, the air inlet, the flue gas outlet, the left port and the right port are respectively communicated with the valve cavity, the valve cavity is provided with a valve core capable of separating the valve cavity into two chambers from top to bottom, the valve core is rotatably arranged in the valve cavity through a vertical shaft and a bearing, the valve cavity side walls between the flue gas outlet and the left port, the left port and the air inlet, the air inlet and the right port, the upper end and the lower end of the right port and the flue gas outlet are respectively provided with a sealing flange which is vertically arranged, the upper end and the lower end of the sealing flange are respectively abutted against the upper end and the lower end of the valve cavity and used for abutting against one side of the valve core, the left front sealing flange and the right front sealing flange are respectively staggered in the two chambers of the valve cavity, the left rear sealing flange and the right front sealing flange are respectively staggered in the two chambers of the valve cavity, and the sealing flanges and one side of the valve core are abutted against one side surfaces, and the side surfaces of the valve cavity can not be blocked by the sealing flanges, and the side surfaces can not be communicated through the sealing flanges: two through cavities which are respectively positioned at two sides of the vertical shaft and are vertically penetrated are arranged in the valve core, a self-operated sealing block is respectively arranged at the upper end and the lower end of the two through cavities, a blocking device which can prevent the two self-operated sealing blocks from being close is arranged between the two self-operated sealing blocks in each through cavity, air inlets which can enable air to enter the two self-operated sealing blocks in the through cavities are respectively arranged on the side walls of the two through cavities opposite to the air inlets, high-pressure air which is introduced from the air inlets can enter the two self-operated sealing blocks in the two through cavities respectively, and the corresponding two self-operated sealing blocks can respectively abut against the upper end and the lower end of the valve cavity under the action of wind pressure, so that the two self-operated sealing blocks positioned above can seal a gap between the upper end of the valve core and the upper end of the valve cavity, and the gap between the lower end of the valve cavity can be sealed by the two self-operated sealing blocks positioned below.
Further, the self-sealing two-position four-way reversing valve, wherein: the blocking device is a spring, and two ends of the spring are respectively propped against the upper self-operated sealing blocks and the lower self-operated sealing blocks.
Further, the self-sealing two-position four-way reversing valve, wherein: and positioning grooves for inserting one end of the spring are formed in the inner end faces of the self-operated sealing blocks.
Further, the self-sealing two-position four-way reversing valve, wherein: sealing strips for sealing gaps between the sealing flanges and the valve core are arranged on the abutting surfaces of the sealing flanges and one side of the valve core.
Further, the self-sealing two-position four-way reversing valve, wherein: the vertical shaft and the valve body are sealed by an axial sealing ring.
The invention has the advantages that: the self-operated sealing two-position four-way reversing valve does not seal the gap between the valve core and the upper end and the lower end of the valve cavity when reversing, and the high-pressure air entering from the air inlet is adopted to seal the gap between the valve core and the upper end and the lower end of the valve cavity by the self-operated sealing block after reversing is finished, so that the tightness of two chambers in the valve cavity is improved.
Drawings
Fig. 1 is a schematic cross-sectional view of a self-sealing two-position four-way reversing valve according to the present invention.
Fig. 2 is a schematic vertical sectional structure of the self-sealing two-position four-way reversing valve according to the invention.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
As shown in fig. 1 and 2, the self-sealing two-position four-way reversing valve comprises: the valve body 1, a valve cavity 2 is arranged in the valve body 1, an air inlet 3 positioned at the rear side, a flue gas outlet 4 positioned at the front side, a left port 5 and a right port 6 are respectively arranged on the valve body 2, the air inlet 3, the flue gas outlet 4, the left port 5 and the right port 6 are respectively communicated with the valve cavity 2, a valve core 7 capable of dividing the valve cavity 2 into two chambers from top to bottom is arranged in the valve cavity 2, the valve core 7 is rotatably arranged in the valve cavity 2 through a vertical shaft 71 and a bearing, a sealing baffle 8 which is vertically arranged on the side wall of the valve cavity 2 between the flue gas outlet 4 and the left port 5, the left port 5 and the air inlet 3, the air inlet 3 and the right port 6 and between the right port 6 and the flue gas outlet 4 and is respectively abutted against the upper end and the lower end of the valve cavity 2 and is used for abutting against one side of the valve core 7, the two sealing flanges 8 at the left front and the right rear are respectively staggered in the two chambers of the valve cavity 2, the two sealing flanges 8 at the left rear and the right front are also respectively staggered in the two chambers of the valve cavity 2, the gaps between the side surfaces of the valve core 7 and the side walls of the valve cavity 2 can be blocked and sealed after the sealing flanges 8 are propped against one side of the valve core 7, so that the two chambers in the valve cavity 2 cannot be communicated through the gaps on the side surfaces, one side of the valve core 7 is propped against the sealing flange 8 at the left front after the valve core 7 rotates towards one direction, the other side of the valve core 7 is propped against the sealing flange 8 at the right rear, at the moment, the air inlet 3 is communicated with the left port 5, and the flue gas outlet 4 is communicated with the right port 6; after the valve core 7 rotates in the opposite direction, one side of the valve core 7, which is abutted against the left front sealing flange 8 before, is abutted against the left rear sealing flange 8, and the other side of the valve core 7 is abutted against the right front sealing flange 8, at the moment, the air inlet 3 is communicated with the right port 6, and the flue gas outlet 4 is communicated with the left port 5; the valve core 7 is provided with two through cavities 72 which are respectively positioned at two sides of the vertical shaft 71 and are vertically penetrated, the upper ends and the lower ends of the two through cavities 72 are respectively provided with a self-operated sealing block 73, a blocking device which can prevent the two self-operated sealing blocks 73 from being close is arranged between the two self-operated sealing blocks 73 in each through cavity 72, the side walls of the two through cavities 72 opposite to the air inlet 3 are respectively provided with an air inlet 74 which can enable air to enter between the two self-operated sealing blocks 73 in the through cavities 72, high-pressure air which is introduced from the air inlet 3 can respectively enter between the two self-operated sealing blocks 73 in the two through cavities 72, and each corresponding two self-operated sealing blocks 73 can respectively abut against the upper end and the lower end of the valve cavity 2 under the action of wind pressure, so that the two self-operated sealing blocks 73 positioned above can seal a gap between the upper end of the valve core 7 and the upper end of the valve cavity 2, and the two self-operated sealing blocks 73 positioned below can seal a gap between the lower end of the valve core 7 and the lower end of the valve cavity 2.
In this embodiment, the blocking device is a spring 75, and two ends of the spring 75 respectively abut against the upper and lower self-force sealing blocks 73. The spring 75 can not only prevent the two self-operated sealing blocks 73 from being close together, but also assist wind pressure to push the two self-operated sealing blocks 73, so that the sealing effect is better. Positioning grooves 76 into which one ends of the springs 75 are inserted are provided in the inner end surfaces of the respective self-energizing seal blocks 73, and the positioning grooves 76 are provided to position both ends of the springs 75, preventing the springs 75 from being fallen down.
For better sealing, sealing strips for sealing the gap between the sealing flange 8 and the valve core 7 are arranged on the abutting surfaces of the sealing flanges 8 and one side of the valve core 7. The vertical shaft 71 and the valve body 1 are sealed by an axial sealing ring 77.
Claims (5)
1. A self-sealing two-position four-way reversing valve comprising: the valve body is provided with a valve cavity, the valve body is also provided with an air inlet at the rear side, a flue gas outlet at the front side, a left port and a right port, the air inlet, the flue gas outlet, the left port and the right port are respectively communicated with the valve cavity, the valve cavity is provided with a valve core capable of separating the valve cavity into two chambers from top to bottom, the valve core is rotatably arranged in the valve cavity through a vertical shaft and a bearing, the valve cavity side walls between the flue gas outlet and the left port, the left port and the air inlet, the air inlet and the right port, the upper end and the lower end of the right port and the flue gas outlet are respectively provided with a sealing flange which is vertically arranged, the upper end and the lower end of the sealing flange are respectively abutted against the upper end and the lower end of the valve cavity and used for abutting against one side of the valve core, the left front sealing flange and the right front sealing flange are respectively staggered in the two chambers of the valve cavity, the left rear sealing flange and the right front sealing flange are respectively staggered in the two chambers of the valve cavity, and the sealing flanges and one side of the valve core are abutted against one side surfaces, and the side surfaces of the valve cavity can not be blocked by the sealing flanges, and the side surfaces can not be communicated through the sealing flanges: two through cavities which are respectively positioned at two sides of the vertical shaft and are vertically penetrated are arranged in the valve core, a self-operated sealing block is respectively arranged at the upper end and the lower end of the two through cavities, a blocking device which can prevent the two self-operated sealing blocks from being close is arranged between the two self-operated sealing blocks in each through cavity, air inlets which can enable air to enter the two self-operated sealing blocks in the through cavities are respectively arranged on the side walls of the two through cavities opposite to the air inlets, high-pressure air which is introduced from the air inlets can enter the two self-operated sealing blocks in the two through cavities respectively, and the corresponding two self-operated sealing blocks can respectively abut against the upper end and the lower end of the valve cavity under the action of wind pressure, so that the two self-operated sealing blocks positioned above can seal a gap between the upper end of the valve core and the upper end of the valve cavity, and the gap between the lower end of the valve cavity can be sealed by the two self-operated sealing blocks positioned below.
2. The self-sealing two-position four-way reversing valve of claim 1, wherein: the blocking device is a spring, and two ends of the spring are respectively propped against the upper self-operated sealing blocks and the lower self-operated sealing blocks.
3. The self-sealing two-position four-way reversing valve of claim 2, wherein: and positioning grooves for inserting one end of the spring are formed in the inner end faces of the self-operated sealing blocks.
4. A self-sealing two-position four-way reversing valve according to claim 1 or 2 or 3, wherein: sealing strips for sealing gaps between the sealing flanges and the valve core are arranged on the abutting surfaces of the sealing flanges and one side of the valve core.
5. A self-sealing two-position four-way reversing valve according to claim 1 or 2 or 3, wherein: the vertical shaft and the valve body are sealed by an axial sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811598760.1A CN109469747B (en) | 2018-12-26 | 2018-12-26 | Self-sealing two-position four-way reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811598760.1A CN109469747B (en) | 2018-12-26 | 2018-12-26 | Self-sealing two-position four-way reversing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109469747A CN109469747A (en) | 2019-03-15 |
| CN109469747B true CN109469747B (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811598760.1A Active CN109469747B (en) | 2018-12-26 | 2018-12-26 | Self-sealing two-position four-way reversing valve |
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| CN (1) | CN109469747B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113200362B (en) * | 2021-04-13 | 2022-11-01 | 山东天鹅棉业机械股份有限公司 | Four-way valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2603260Y (en) * | 2002-08-30 | 2004-02-11 | 济南钢铁股份有限公司 | Switching over valve for double heat storage combustion system |
| CN106415092B (en) * | 2014-01-29 | 2019-02-22 | 上海高迪亚电子系统有限公司 | A kind of low pressure reduction leakage rotary type four-way reversal valve |
| CN204239816U (en) * | 2014-10-18 | 2015-04-01 | 浙江鸿森机械有限公司 | The four-way change-over valve of double-shaft seal sealing |
| CN204784849U (en) * | 2015-06-24 | 2015-11-18 | 上海安可科技股份有限公司 | Coaxial switching -over valve of two heat accumulation formula combustors |
| CN209278544U (en) * | 2018-12-26 | 2019-08-20 | 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 |
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2018
- 2018-12-26 CN CN201811598760.1A patent/CN109469747B/en active Active
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| CN109469747A (en) | 2019-03-15 |
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Address after: 215624 north side of Jinnan Road, Jinfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Applicant after: Jiangsu Xinzhou wear resistant Technology Co.,Ltd. Address before: 215624 Zhangjiagang Xinzhou welding and Cutting Machinery Co., Ltd., north of Jinnan Road, Jinfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Applicant before: ZHANGJIAGANG XINZHOU WELDING AND CUTTING MACHINERY Co.,Ltd. |
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