CN205654909U - Proportion multiple unit valve case - Google Patents
Proportion multiple unit valve case Download PDFInfo
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- CN205654909U CN205654909U CN201620293114.4U CN201620293114U CN205654909U CN 205654909 U CN205654909 U CN 205654909U CN 201620293114 U CN201620293114 U CN 201620293114U CN 205654909 U CN205654909 U CN 205654909U
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Abstract
The utility model relates to a proportion multiple unit valve case, it includes case body (1), be equipped with left active section (2) on case body (1) respectively, the first conical surface (3) of left side active section (2) right -hand member, middle active section (6), the second conical surface (4) of middle active section (6) high order end, the third conical surface (5) on the second conical surface (4) right side, the 5th conical surface (8) of middle active section (6) low order end, the 5th conical surface (8) left the fourth conical surface (7), right side active section (10), the 6th conical surface (9) of right side active section (10) left end, its characterized in that: the second conical surface (4) and the third conical surface (5) link to each other, and the fourth conical surface (7) and the 5th conical surface (8) link to each other, and the second conical surface (4) and the 5th conical surface (8) length equals that the cone angle is 45, and the third conical surface (5) and the fourth conical surface (7) length is equal, and the cone angle is 18, and the third conical surface (5) and the second conical surface (4) axial length are than being 1: 3, the fourth conical surface (7) and the 5th conical surface (8) axial length are than being 1: 3. The utility model discloses guaranteeing not influence the valve port area gradient that has reduced little opening part under the prerequisite of proportion multiple unit valve flowing capability effectively, reduce the flow gain, improve flow resolution ratio, realize the optimization of proportion multiple unit valve fine motion characteristic.
Description
Technical field
This utility model relates to hydraulic valve design field, particularly to a kind of proportional multi-path valve core
Background technology
Engineering machinery is the important component part of equipment manufacturing industry, occupies critical role in national economy.Banked direction control valves is one of crucial hydraulic basis part of engineering machinery, is that the core of host hydraulic system controls element.In recent years, the development of domestic project mechanical industry is swift and violent, but domestic proportional multi-way valve lagging in development, technical merit is low, governs the sound development of China's engineering machinery.
Fine motion characteristic is one of important technology difficult point of banked direction control valves, is also the necessary demand of the maneuvering performance improving middle and high end engineering machinery.Generally there is the phenomenon that fine motion characteristic is bad in domestic proportional multi-way valve, when regulating main valve plug displacement, easily occurs that executor starts play or controls phenomenon, this demand being difficult to meet middle and high end engineering machinery the most accurately.
Current a kind of proportional multi-way valve valve core structure sees Fig. 1, including insert body (1), described insert body (1) is provided with: left active section (2), middle active section (5), right active section (8), first conical surface (3), second conical surface (4), having three pyramidal faces (6), the 4th conical surface (7)；The right-hand member of left active section (2) is first conical surface (3), middle active section (5) two ends, left and right are distributed 45 ° and identical second conical surface (4) and having three pyramidal faces (6) respectively, and the left end of right active section (8) is the conical surface (7).Its shortcoming is: proportional multi-way valve is low in little opening part flow control accuracy, and fine motion characteristic is poor.Reason is, valve port flow characteristic is had a major impact by valve port area gradient, and this spool is relatively big in little opening part area gradient, thus flow gain is relatively big, and then causes banked direction control valves wayward at little opening part flow, and fine motion characteristic is bad.
Utility model content
The purpose of this utility model is to propose a kind of proportional multi-path valve core, this valve core structure can be on the premise of ensureing not affect proportional multi-way valve through-current capability, it is effectively reduced the proportional multi-way valve valve port area gradient at little opening part, thus reduce flow gain, improve flow resolution, it is achieved the optimization of proportional multi-way valve fine motion characteristic.
To achieve these goals, this utility model is to adopt the following technical scheme that
nullA kind of proportional multi-path valve core，Including insert body (1)，Left active section (2) it is respectively equipped with on described insert body (1)、First conical surface (3) of left active section (2) right-hand member、Middle active section (6)、Second conical surface (4) of middle active section (6) high order end、The having three pyramidal faces (5) on second conical surface (4) right side、5th conical surface (8) of middle active section (6) low order end、4th conical surface (7) in the 5th conical surface (8) left side、Right active section (10)、6th conical surface (9) of right active section (10) left end,It is characterized in that: second conical surface (4) is connected with having three pyramidal faces (5)，4th conical surface (7) is connected with the 5th conical surface (8),Second conical surface (4) and the 5th conical surface (8) length are equal，Cone angle is 45 °，Having three pyramidal faces (5) and the 4th conical surface (7) length are equal，Cone angle is 18 °，And having three pyramidal faces (5) and second conical surface (4) axial length ratio is for 1:3，4th conical surface (7) and the 5th conical surface (8) axial length ratio is for 1:3.
The beneficial effects of the utility model: the utility model proposes a kind of proportional multi-path valve core, on the premise of ensureing not affect proportional multi-way valve through-current capability, it is effectively reduced the proportional multi-way valve valve port area gradient at little opening part, thus reduce flow gain, improve flow resolution, it is achieved the optimization of proportional multi-way valve fine motion characteristic.
Accompanying drawing explanation
Fig. 1 is current a kind of proportional multi-way valve valve core structure schematic diagram
Fig. 2 is structural representation of the present utility model
Detailed description of the invention
With embodiment, embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.Following example are used for illustrating this utility model, but can not be used for limiting scope of the present utility model.
nullAs shown in Figure 2，A kind of proportional multi-path valve core，Including insert body (1)，Left active section (2) it is respectively equipped with on described insert body (1)、First conical surface (3) of left active section (2) right-hand member、Middle active section (6)、Second conical surface (4) of middle active section (6) high order end、The having three pyramidal faces (5) on second conical surface (4) right side、5th conical surface (8) of middle active section (6) low order end、4th conical surface (7) in the 5th conical surface (8) left side、Right active section (10)、6th conical surface (9) of right active section (10) left end,It is characterized in that: second conical surface (4) is connected with having three pyramidal faces (5)，4th conical surface (7) is connected with the 5th conical surface (8),Second conical surface (4) and the 5th conical surface (8) length are equal，Cone angle is 45 °，Having three pyramidal faces (5) and the 4th conical surface (7) length are equal，Cone angle is 18 °，And having three pyramidal faces (5) and second conical surface (4) axial length ratio is for 1:3，4th conical surface (7) and the 5th conical surface (8) axial length ratio is for 1:3.
Operation principle of the present utility model is: in the case of other parameters all determine, 45 ° of conical surfaces of former spool change at 45 ° and 18 ° of two sections of conical surfaces compositions.When banked direction control valves is at little opening part, 18 ° of conical surfaces reduce with the valve port area of passage of valve body formation with 45 ° of conical surfaces of the more former spool of valve port area of passage of valve body formation, so using the proportional multi-way valve of new spool little compared with former spool at little opening part flow gain, its changes in flow rate is the mildest, thus improve flow resolution, optimized proportion banked direction control valves fine motion characteristic.Owing to not changing the big opening part spool conical surface number of degrees, so not affecting the through-current capability of this valve.
Embodiment of the present utility model is given for the sake of example and description, and is not exhaustively or this utility model to be limited to disclosed form.Selecting and describing embodiment is in order to principle of the present utility model and actual application are more preferably described; those skilled in the art can be in essence of the present utility model and protection domain; this utility model is made various amendment or equivalent, and this amendment or equivalent also should be regarded as in protection domain of the present utility model.
Claims (1)
- null1. a proportional multi-path valve core，Including insert body (1)，Left active section (2) it is respectively equipped with on described insert body (1)、First conical surface (3) of left active section (2) right-hand member、Middle active section (6)、Second conical surface (4) of middle active section (6) high order end、The having three pyramidal faces (5) on second conical surface (4) right side、5th conical surface (8) of middle active section (6) low order end、4th conical surface (7) in the 5th conical surface (8) left side、Right active section (10)、6th conical surface (9) of right active section (10) left end,It is characterized in that: second conical surface (4) is connected with having three pyramidal faces (5)，4th conical surface (7) is connected with the 5th conical surface (8),Second conical surface (4) and the 5th conical surface (8) length are equal，Cone angle is 45 °，Having three pyramidal faces (5) and the 4th conical surface (7) length are equal，Cone angle is 18 °，And having three pyramidal faces (5) and second conical surface (4) axial length ratio is for 1:3，4th conical surface (7) and the 5th conical surface (8) axial length ratio is for 1:3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620293114.4U CN205654909U (en) | 2016-04-11 | 2016-04-11 | Proportion multiple unit valve case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620293114.4U CN205654909U (en) | 2016-04-11 | 2016-04-11 | Proportion multiple unit valve case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205654909U true CN205654909U (en) | 2016-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620293114.4U Expired - Fee Related CN205654909U (en) | 2016-04-11 | 2016-04-11 | Proportion multiple unit valve case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205654909U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695755A (en) * | 2019-01-21 | 2019-04-30 | 燕山大学 | Bivalve shape of the mouth as one speaks big flow three-way pressure compensating valve |
| JP2021152381A (en) * | 2020-03-24 | 2021-09-30 | 株式会社不二工機 | Flow passage switching valve |
-
2016
- 2016-04-11 CN CN201620293114.4U patent/CN205654909U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695755A (en) * | 2019-01-21 | 2019-04-30 | 燕山大学 | Bivalve shape of the mouth as one speaks big flow three-way pressure compensating valve |
| JP2021152381A (en) * | 2020-03-24 | 2021-09-30 | 株式会社不二工機 | Flow passage switching valve |
| JP7129100B2 (en) | 2020-03-24 | 2022-09-01 | 株式会社不二工機 | Flow switching 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: 20161019 Termination date: 20170411 |