CN111623167A - Valve seat, valve assembly and equipment with valve assembly - Google Patents
Valve seat, valve assembly and equipment with valve assembly Download PDFInfo
- Publication number
- CN111623167A CN111623167A CN201910148048.XA CN201910148048A CN111623167A CN 111623167 A CN111623167 A CN 111623167A CN 201910148048 A CN201910148048 A CN 201910148048A CN 111623167 A CN111623167 A CN 111623167A
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- China
- Prior art keywords
- valve
- valve seat
- valve assembly
- valve plate
- assembly
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention provides a valve seat, a valve assembly and equipment with the valve assembly, wherein the valve seat comprises a supporting part and a buffering part, the supporting part is provided with a first inner cavity along the axial direction of the supporting part, the buffering part is arranged in the first inner cavity around the inner side wall of the supporting part, the buffering part comprises an air inlet end and an air outlet end, the air inlet end is communicated with the air outlet end, and the buffering part is made of engineering plastics. According to the technical scheme provided by the invention, the impact fatigue life of the valve plate matched with the valve seat is prolonged, and the impact noise between the valve plate and the valve seat is reduced.
Description
Technical Field
The invention relates to the field of valves, in particular to a valve seat, a valve assembly and equipment with the valve assembly.
Background
The valve plate is one of the most critical vulnerable parts of the compressor, and the quality and the use performance of the valve plate determine the performances of the whole compressor, such as reliability, compression efficiency, maintenance period and the like. The valve plate is damaged by a plurality of factors, wherein the valve seat is in direct contact with the valve plate, so that the structure, the material and the like of the valve seat can be important factors for damaging the valve plate. Referring to fig. 1, fig. 1 is a schematic view of a conventional valve seat, and as can be seen from fig. 1, a conventional valve seat 10 is generally formed integrally. The valve seat is generally made of cast iron, and the integrally formed valve seat made of cast iron has the performances of high hardness and low damping, so that the impact fatigue life of the valve plate is too short, and the valve plate is further damaged quickly. Referring to fig. 2a to 2b, fig. 2a to 2b are schematic diagrams of crack positions and paths on the valve sheet, and it can be seen from fig. 2a to 2b that a crack is generated on the valve sheet by the acting force of the valve seat, resulting in further damage to the valve sheet.
Therefore, how to improve the structure and material of the valve seat to improve the impact fatigue life of the valve plate is a problem that needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a valve seat, a valve component and equipment with the valve component, so that the impact fatigue life of a valve plate matched with the valve seat is prolonged, and the impact noise between the valve plate and the valve seat is reduced.
In order to achieve the purpose, the invention provides a valve seat which comprises a supporting part and a buffering part, wherein a first inner cavity is formed in the supporting part along the axial direction of the supporting part, the buffering part is arranged in the first inner cavity in a surrounding mode around the inner side wall of the supporting part, the buffering part comprises an air inlet end and an air outlet end, the air inlet end is communicated with the air outlet end, and the buffering part is made of engineering plastics.
Optionally, the buffer portion is provided with a second inner cavity along an axial direction thereof, two ends of the second inner cavity are respectively an exhaust end and an air inlet end, and an inner side wall of the exhaust end is inclined towards an outer side wall of the support portion, so that a radial sectional area of the inner side wall of the exhaust end is larger than a radial sectional area of the inner side wall of the air inlet end.
Optionally, a top surface of the buffer portion is higher than a top surface of the support portion.
Optionally, the buffer part is fixed on the inner side wall of the support part by press-fitting.
Optionally, the engineering plastic comprises polyetheretherketone, polyetherimide and/or polytetrafluoroethylene, or polyetheretherketone, polyetherimide and/or polytetrafluoroethylene filled with glass fibers and/or carbon fibers.
Optionally, the material of the supporting portion includes a casting material or a powder metallurgy material.
The present invention also provides a valve assembly comprising: the valve plate and the valve seat provided by the invention are covered on the exhaust end of the buffer part of the valve seat.
Optionally, the valve plate is made of metal or engineering plastic.
The present invention also provides an apparatus having a valve assembly, comprising: the valve assembly provided by the invention comprises a pipeline and the valve assembly, wherein one end of the pipeline is communicated with the air inlet end of the buffer part of the valve seat.
Optionally, the apparatus with valve assembly comprises a compressor.
Optionally, the compressor includes the bent axle, encircles last cylinder cap and lower cylinder cap that the bent axle set up and set up in go up the cylinder cap with cylinder between the cylinder cap down, the valve module is located go up the inside of cylinder cap, just the back of disk seat the one end of valve block with the cylinder is connected, just the other end of pipeline with the cylinder intercommunication.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. according to the valve seat, the buffer part surrounding the inner side wall of the supporting part is arranged in the first inner cavity of the supporting part, and the buffer part is made of engineering plastics, so that the impact fatigue life of a valve plate matched with the valve seat for use is prolonged, and the impact noise between the valve plate and the valve seat is reduced.
2. According to the valve component, due to the valve seat provided by the invention, and the valve plate covers the exhaust end of the buffer part of the valve seat, the impact fatigue life of the valve plate is prolonged, and the impact noise between the valve plate and the valve seat is reduced.
3. The equipment with the valve assembly provided by the invention has the advantages that the service life of the equipment with the valve assembly is prolonged, and the noise of the equipment with the valve assembly is reduced.
Drawings
FIG. 1 is a schematic illustration of a prior art valve seat;
FIGS. 2 a-2 b are schematic views of crack locations and paths on a valve plate;
FIG. 3 is a schematic view of a valve seat of an embodiment of the present invention;
FIG. 4 is a schematic view of a valve assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view of a compressor having a valve assembly according to an embodiment of the present invention;
fig. 6 is an enlarged schematic view of a valve assembly in the compressor having the valve assembly shown in fig. 5.
Wherein the reference numerals of figures 1 to 6 are as follows:
10-a valve seat; 20-a valve seat; 21-a support part; 22-a buffer; 221-an air inlet end; 222-a gas exhaust end; 23-valve plate; 24-a pipeline; 25-a crankshaft; 261-upper cylinder cover; 262-lower cylinder cover; 27-a cylinder; 28-piston.
Detailed Description
To make the objects, advantages and features of the present invention more apparent, the valve seat, the valve assembly and the apparatus having the valve assembly according to the present invention will be described in further detail with reference to fig. 3 to 6. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Referring to fig. 3, fig. 3 is a schematic view of a valve seat according to an embodiment of the present invention, and as can be seen from fig. 3, the valve seat includes a support portion 21 and a buffer portion 22, the support portion 21 is provided with a first inner cavity (not shown) along an axial direction thereof, the buffer portion 22 is disposed in the first inner cavity around an inner sidewall of the support portion 21, the buffer portion 22 includes an air inlet end 221 and an air outlet end 222, the air inlet end 221 is communicated with the air outlet end 222, and the buffer portion 22 is made of engineering plastic.
The valve seat is described in detail below with reference to fig. 3:
the valve seat comprises a supporting portion 21 and a buffering portion 22, a first inner cavity is formed in the supporting portion 21 along the axial direction of the supporting portion, and the buffering portion 22 surrounds the inner side wall of the supporting portion 21 and is arranged in the first inner cavity. The outer side wall or the bottom wall of the support portion 21 may be mounted on a component in the apparatus having the valve seat, or both the outer side wall and the bottom wall of the support portion 21 may be mounted on a component in the apparatus having the valve seat to fix the valve seat. The outer side wall or the bottom wall of the supporting portion 21 may be fixed by welding or screwing. In this embodiment, the buffer part 22 is pressed into the first inner cavity of the support part 21 by a press-fitting method, so that the buffer part 22 is fixed on the inner side wall of the support part 21. In other embodiments, cold charging or hot charging methods may be used.
The buffer part 22 includes an air inlet end 221 and an air outlet end 222, and the air inlet end 221 is communicated with the air outlet end 222 so that gas can pass through the inside of the buffer part 22. The buffer part 22 is opened with a second inner cavity (not shown) along the axial direction, and the two ends of the second inner cavity are respectively an exhaust end 222 and an intake end 221. In this embodiment, the inner sidewall of the exhaust end 222 of the buffer portion 22 is inclined toward the outer sidewall of the support portion 21, so that the radial cross-sectional area of the inner sidewall of the exhaust end 222 is larger than the radial cross-sectional area of the inner sidewall of the intake end 221, thereby facilitating the buffering of the gas when the gas reaches the exhaust end 222 from the intake end 221. In other embodiments, the radial cross-sectional area of the inner sidewall of the discharge end 222 may be equal to or smaller than the radial cross-sectional area of the inner sidewall of the intake end 221.
The material of the buffer portion 22 is engineering plastic, in this embodiment, the engineering plastic may include Polyetheretherketone (PEEK), Polyetherimide (PEI) or Polytetrafluoroethylene (PTFE), or may be composed of three materials; alternatively, Polyetheretherketone (PEEK), Polyetherimide (PEI) and/or Polytetrafluoroethylene (PTFE) may be used as a substrate, which is filled with glass fibers or carbon fibers, or both glass fibers and carbon fibers, and the addition of a filler material can improve the strength of the engineering plastic. In other embodiments, the filler material may be replaced by nano metal oxide, such as nano titanium dioxide (TiO2) or the like; in addition, the base material may be replaced with Polyoxymethylene (POM) or the like. Since the engineering plastic has low hardness and high damping performance, that is, the buffer part 22 has low hardness and high damping performance, and the valve sheet (not shown) used in cooperation with the valve seat is in contact with the top surface of the buffer part 22, the impact fatigue life of the valve sheet is prolonged, and the impact noise between the valve sheet and the valve seat is reduced.
The material of the support portion 21 may include a cast material, which may include cast iron, cast copper, or the like, or a powder metallurgy material, which may include copper, aluminum, or the like. The support portion 21 has a high hardness property so that the valve seat can be stably mounted and fixed on a component in an apparatus having the valve seat; meanwhile, the valve seat is in the process of being matched with the valve plate for use, the valve plate is required not to be in contact with the supporting portion 21, otherwise, the valve plate is in impact with the supporting portion 21 with high hardness and high frequency, and the impact fatigue life of the valve plate can be shortened.
In this embodiment, the top surface of the buffer portion 22 is higher than the top surface of the support portion 21, so that when the area of the cross section of the valve plate is larger than the area of the cross section of the outer sidewall of the buffer portion 22, the valve plate can still contact with the top surface of the buffer portion 22; in other embodiments, the top surface of the buffer part 22 may be lower than the top surface of the support part 21 or flush with the top surface of the support part 21, but the area of the cross section of the valve sheet is required to be smaller than the area of the cross section of the outer sidewall of the buffer part 22 so that the valve sheet can still contact with the top surface of the buffer part 22. And then make the disk seat with the valve block is at the in-process of cooperation use, the valve block can not with the supporting part 21 contact of disk seat to make the impact fatigue life of valve block obtain improving, also make the valve block with the striking noise between the disk seat obtains reducing.
In summary, the valve seat provided by the invention comprises a supporting part and a buffering part, wherein the supporting part is provided with a first inner cavity along the axial direction of the supporting part, the buffering part is arranged in the first inner cavity around the inner side wall of the supporting part, the buffering part comprises an air inlet end and an air outlet end, the air inlet end is communicated with the air outlet end, and the buffering part is made of engineering plastics. According to the valve seat provided by the invention, the impact fatigue life of the valve plate matched with the valve seat is prolonged, and the impact noise between the valve plate and the valve seat is reduced.
Referring to fig. 4, fig. 4 is a schematic view of a valve assembly according to an embodiment of the present invention, and as can be seen from fig. 4, the valve assembly includes a valve sheet 23 and the valve seat 20 provided in the present invention, and the valve sheet 23 covers a gas discharge end 222 of a buffer portion 22 of the valve seat 20. The material of valve block 23 can include metal or engineering plastics, valve block 23 can select the material that has high strength, also can improve like this valve block 23's impact fatigue life.
According to the above description of the valve seat 20 of the present invention, in order to ensure that the valve sheet 23 is in contact with the cushioning portion 22 having low hardness and high damping, rather than the support portion 21 having high hardness and low damping, when the area of the cross section of the valve sheet 23 is larger than the area of the cross section of the outer side wall of the cushioning portion 22, the top surface of the cushioning portion 22 is higher than the top surface of the support portion 21 during the use of the valve sheet 23 in cooperation with the valve seat 20; and when the area of the cross section of the valve sheet 23 is smaller than the area of the cross section of the outer sidewall of the buffer portion 22, the top surface of the buffer portion 22 may be lower than the top surface of the support portion 21 or flush with the top surface of the support portion 21.
Since the buffer part 22 of the valve seat 20 includes the inlet end 221 and the outlet end 222, when gas enters from the inlet end 221 and reaches the outlet end 222, the gas impacts the valve sheet 23 covering the outlet end 222, so that the valve sheet 23 leaves the top surface of the outlet end 222; after the gas is exhausted, the valve plate 23 falls back to the exhaust end 222, and at this time, the valve plate 23 collides with the exhaust end 222. In addition, under a normal operating condition, the impact frequency of the valve plate 23 on the valve seat 20 is very high, so if the material of the portion of the valve seat 20 that contacts and impacts the valve plate 23 (i.e., the exhaust end 222 of the buffer portion 22) is a casting material or a powder metallurgy material (i.e., a material with very high hardness), the noise generated by the impact between the valve plate 23 and the valve seat 20 is very high, and the impact fatigue life of the valve plate 23 is also reduced. Therefore, it is required that the buffer part 22 of the valve seat 20 has low hardness and high damping performance, and the valve sheet 23 covers the exhaust end 222 of the buffer part 22, so that the impact fatigue life of the valve sheet 23 is improved, and the impact noise between the valve sheet 23 and the valve seat 20 is reduced.
In summary, the valve assembly provided by the invention comprises the valve plate and the valve seat provided by the invention, and the valve plate covers the exhaust end of the buffer part of the valve seat. According to the valve component, the impact fatigue life of the valve plate is prolonged, and the impact noise between the valve plate and the valve seat is reduced.
An embodiment of the present invention provides an apparatus having a valve assembly, including: the valve assembly provided by the invention comprises a pipeline and the valve assembly, wherein one end of the pipeline is communicated with the air inlet end of the buffer part of the valve seat. The apparatus having the valve assembly may include a compressor, or other apparatus having a pump structure and the valve assembly.
When the apparatus with the valve assembly is a compressor, referring to fig. 5, fig. 5 is a schematic diagram of the compressor with the valve assembly according to an embodiment of the present invention, and as can be seen from fig. 5, the compressor includes a crankshaft 25, an upper cylinder cover 261 and a lower cylinder cover 262 disposed around the crankshaft 25, and a cylinder 27 disposed between the upper cylinder cover 261 and the lower cylinder cover 262, the valve assembly is located inside the upper cylinder cover 261, and an end of a valve seat 20 of the valve assembly facing away from the valve plate 23 is connected to the cylinder 27. The compressor may further include a housing (not shown), a motor (not shown), a piston 28 disposed between the upper cylinder head 261 and the lower cylinder head 262 and surrounding an outer sidewall of the crankshaft 25, and the like.
In addition, referring to fig. 6, fig. 6 is an enlarged schematic view of the valve assembly in the compressor with the valve assembly shown in fig. 5, and as can be seen from fig. 6, one end of the valve seat 20 facing away from the valve plate 23 is fixedly connected to the top of the cylinder 27, and one end of the valve seat 20 facing away from the valve plate 23 may also be partially located on the piston 28. One end of the pipeline 24 is communicated with the air inlet end 221 of the buffer part 22 of the valve seat 20, the other end of the pipeline 24 is communicated with the air cylinder 27, and the valve plate 23 covers the air outlet end 222 of the buffer part 22. When the high-temperature and high-pressure refrigerant in the cylinder 27 enters the exhaust end 222 of the buffer part 22 through the pipeline 24 and the air inlet end 221 of the buffer part 22, the valve sheet 23 covering the exhaust end 222 is impacted, so that the valve sheet 23 leaves the top surface of the exhaust end 222; after the refrigerant is discharged, the valve plate 23 falls back to the exhaust end 222, and at this time, the valve plate 23 collides with the exhaust end 222. Because the buffer part 22 which collides with the valve plate 23 has low hardness and high damping performance, the impact fatigue life of the valve plate 23 is prolonged, the impact noise between the valve plate 23 and the valve seat 20 is reduced, the service life of the compressor is prolonged, and the noise of the compressor is reduced.
Therefore, since the valve assembly is provided in the apparatus having the valve assembly, the impact fatigue life of the valve sheet 23 is improved, and the impact noise between the valve sheet 23 and the valve seat 20 is also reduced, so that the life of the apparatus having the valve assembly is improved, and the noise of the apparatus having the valve assembly is reduced.
In summary, the present invention provides an apparatus having a valve assembly, comprising: the valve assembly provided by the invention comprises a pipeline and the valve assembly, wherein one end of the pipeline is communicated with the air inlet end of the buffer part of the valve seat. The apparatus having a valve assembly of the present invention allows the life span of the apparatus having a valve assembly to be increased and allows the noise of the apparatus having a valve assembly to be reduced.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (11)
1. The utility model provides a valve seat, its characterized in that, includes supporting part and buffering portion, first inner chamber has been seted up along its axial to the supporting part, buffering portion encircles the inside wall of supporting part set up in the first inner chamber, buffering portion includes inlet end and exhaust end, the inlet end with the exhaust end intercommunication, the material of buffering portion is engineering plastics.
2. The valve seat according to claim 1, wherein the buffer portion has a second inner cavity along an axial direction thereof, the second inner cavity has an exhaust end and an intake end at two ends thereof, respectively, and an inner sidewall of the exhaust end is inclined toward an outer sidewall of the support portion, so that a radial sectional area of the inner sidewall of the exhaust end is larger than a radial sectional area of the inner sidewall of the intake end.
3. The valve seat of claim 1, wherein a top surface of the relief portion is higher than a top surface of the support portion.
4. The valve seat according to claim 1, wherein the cushioning portion is fixed to an inner side wall of the support portion by press-fitting.
5. Valve seat according to claim 1, characterized in that said engineering plastic comprises polyetheretherketone, polyetherimide and/or polytetrafluoroethylene, or polyetheretherketone, polyetherimide and/or polytetrafluoroethylene filled with glass and/or carbon fibres.
6. The valve seat of claim 1, wherein the support portion comprises a cast material or a powder metallurgy material.
7. A valve assembly, comprising: valve plate and valve seat according to any one of claims 1 to 6, the valve plate covering the exhaust end of the cushioning part of the valve seat.
8. The valve assembly of claim 7, wherein the valve plate comprises a metal or an engineering plastic.
9. An apparatus having a valve assembly, comprising: a conduit and a valve assembly as claimed in claim 7 or 8, one end of the conduit communicating with the inlet end of the cushioning portion of the valve seat.
10. The apparatus having a valve assembly as claimed in claim 9, wherein the apparatus having a valve assembly comprises a compressor.
11. The apparatus having a valve assembly according to claim 10, wherein the compressor includes a crankshaft, upper and lower cylinder heads disposed around the crankshaft, and a cylinder disposed between the upper and lower cylinder heads, the valve assembly is located inside the upper cylinder head, and one end of the valve seat facing away from the valve plate is connected to the cylinder, and the other end of the pipe is communicated with the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910148048.XA CN111623167A (en) | 2019-02-28 | 2019-02-28 | Valve seat, valve assembly and equipment with valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910148048.XA CN111623167A (en) | 2019-02-28 | 2019-02-28 | Valve seat, valve assembly and equipment with valve assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111623167A true CN111623167A (en) | 2020-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910148048.XA Pending CN111623167A (en) | 2019-02-28 | 2019-02-28 | Valve seat, valve assembly and equipment with valve assembly |
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| CN (1) | CN111623167A (en) |
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| CN203770753U (en) * | 2014-04-14 | 2014-08-13 | 永嘉县金鼎泰铸造有限公司 | Slowly-closed check valve |
| CN205298684U (en) * | 2016-01-08 | 2016-06-08 | 南京沪江复合材料有限公司 | A one -way discharge valve for compound bag of plastic -aluminum |
| CN205479540U (en) * | 2015-01-13 | 2016-08-17 | 伊格尔工业股份有限公司 | Leaf valve |
| CN205715843U (en) * | 2016-06-12 | 2016-11-23 | 温州创佳包装材料有限公司 | One-way exhaust valve |
| CN106594305A (en) * | 2017-02-06 | 2017-04-26 | 湖南中工矿业工程技术有限公司 | Reverse open type adjusting valve |
| CN107477199A (en) * | 2017-09-21 | 2017-12-15 | 方乐 | One kind extrudes valve module |
| CN108431414A (en) * | 2015-12-28 | 2018-08-21 | 旭硝子株式会社 | Refrigerating circulatory device |
| CN208503022U (en) * | 2018-04-12 | 2019-02-15 | 上海屹莘贸易有限公司 | A kind of the low noise exhaust valve and compressor of compressor |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10132112A (en) * | 1996-10-25 | 1998-05-22 | Eagle Ind Co Ltd | Reed valve |
| JP2001304441A (en) * | 2000-04-21 | 2001-10-31 | Shin Caterpillar Mitsubishi Ltd | Valve structure |
| CN1373312A (en) * | 2001-02-22 | 2002-10-09 | 本田技研工业株式会社 | Reed valve |
| CN2859140Y (en) * | 2005-11-24 | 2007-01-17 | 南京沪江复合材料有限公司 | Compound plastic aluminum bag dedicated unidirectional air outlet valve |
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| CN103383014A (en) * | 2012-05-02 | 2013-11-06 | 廖海全 | Unidirectional exhaust valve |
| CN203770753U (en) * | 2014-04-14 | 2014-08-13 | 永嘉县金鼎泰铸造有限公司 | Slowly-closed check valve |
| CN205479540U (en) * | 2015-01-13 | 2016-08-17 | 伊格尔工业股份有限公司 | Leaf valve |
| CN108431414A (en) * | 2015-12-28 | 2018-08-21 | 旭硝子株式会社 | Refrigerating circulatory device |
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| CN208503022U (en) * | 2018-04-12 | 2019-02-15 | 上海屹莘贸易有限公司 | A kind of the low noise exhaust valve and compressor of compressor |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200904 |
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| RJ01 | Rejection of invention patent application after publication |