CN203176028U - One-way throttle valve and flow amplifier provided with one-way throttle valve - Google Patents
One-way throttle valve and flow amplifier provided with one-way throttle valve Download PDFInfo
- Publication number
- CN203176028U CN203176028U CN 201220732797 CN201220732797U CN203176028U CN 203176028 U CN203176028 U CN 203176028U CN 201220732797 CN201220732797 CN 201220732797 CN 201220732797 U CN201220732797 U CN 201220732797U CN 203176028 U CN203176028 U CN 203176028U
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- valve
- way throttle
- pressure
- throttle valve
- flow
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Abstract
The utility model relates to one-way throttle valve and a flow amplifier provided with the one-way throttle valve, and belongs to the technical field of hydraulic pressure. The one-way throttle valve comprises a valve body provided with a central flow channel. The outer end of the flow channel is led to a valve element chamber for accommodating valve balls through a hole shrinking section. A valve seat is installed at the inner end of the flow channel, the valve seat is provided with a through hole with the inner diameter smaller than the diameter of a steel ball, the effective diameter of outer end of the valve body is larger than the diameter of the inner end of the valve body, and radial throttling holes are formed in the hole shrinking section and the valve element chamber respectively. By the adoption of the one-way throttle valve, due to the fact that the one-way throttle valve is arranged on a pressure-gradient control valve of the flow amplifier in an integrated mode, hydraulic oil must flow through the throttling holes of the one-way throttle valve through an external control port to reach one end of a valve element of the pressure-gradient control valve, and then the valve element can act. The flow is effectively controlled through the throttling holes, and double throttling functions of the throttling holes in the two positions enable the pressure to be stable, so that the stable operation of the valve element in the flow amplifier is guaranteed, and the reliable control over the flow is achieved.
Description
Technical field
The utility model relates to a kind of one-way throttle valve, also relates to the flow amplifier of being furnished with one-way throttle valve, belongs to the hydraulics field.
Background technique
Flow amplifier is the amplifying device that generally uses in a kind of hydraulic steering system, and it mainly acts on is the flow amplification that hydraulic steering gear is exported, and can satisfy the demand of high pulling torque work.Existing flow amplifier comprises the main body with pressure-gradient control valve import and oil outlet, and the pressure-gradient control valve and the selector valve that are communicated with through runner are housed in this main body at least.Its concrete structure and working principle can be 00136242.9 referring to application number and be called " priority-type flow rate enlarging and merging valve ", application number and be 200710305958.1 and be called " steering preference type flux amplification valve ", application number are called " a kind of type of priority variable changes the control valve " for the 201210232636.X name Chinese patent application document.
The pressure-gradient control valve of this type of flow amplifier inside mainly adopts its spool of orifices controls stable of self.But facts have proved, this control mode can directly be transferred to the shake of external host on the spool in the flow amplifier, cause the spool unstable working condition, cause the hydraulic pressure runner folding condition control difficulty that cooperates with spool, the result influences the performance of flow amplifier.
Summary of the invention
The purpose of this utility model is: at the problem of above-mentioned prior art existence, a kind of one-way throttle valve that can shield outside shake is proposed, and then propose to be furnished with the flow amplifier of one-way throttle valve, thus guarantee flow amplifier inner spool working stability, realize the reliable control of flow.
In order to reach above purpose, one-way throttle valve of the present utility model comprises the valve body with center flow channels, the outer end of described runner leads to the valve core chamber of laying valve ball through the undergauge section, valve seat is equipped with in the inner of described runner, described valve seat has internal diameter less than the through hole of steel ball size, its improvements are that the outer end effective diameter of described valve body is greater than inner diameter, and described undergauge section and valve core chamber are shaped on radially throttle orifice respectively.
The flow amplifier of being furnished with one-way throttle valve comprises the main body with pressure-gradient control valve import and oil outlet, the priority spool and the selector valve that are communicated with through runner are housed in the described main body at least, one-way throttle valve is equipped with in described pressure-gradient control valve import, described one-way throttle valve comprises the valve body with center flow channels, the outer end of described runner leads to the valve core chamber of laying valve ball through the undergauge section, valve seat is equipped with in the inner of described runner, described valve seat has internal diameter less than the through hole of steel ball size, the outer end effective diameter of described valve body is greater than inner diameter, and described undergauge section and valve core chamber are shaped on radially throttle orifice respectively.
After adopting the utility model and since the pressure-gradient control valve of flow amplifier integrated an one-way throttle valve, therefore, hydraulic oil must could arrive spool one end of pressure-gradient control valve through the throttle orifice of one-way throttle valve by outside control mouth, thereby makes its action.Because throttle orifice effectively controlled flow, and the dual throttling action of two place's throttle orifices stablizes pressure, therefore can guarantee flow amplifier inner spool working stability, realizes the reliable control of flow.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is an one-way throttle valve embodiment's of the utility model structural representation.
Fig. 2 is furnished with the flow amplifier structural representation that Fig. 1 one-way throttle valve shows.
Fig. 3 is the A-A partial enlarged drawing of Fig. 2.
Embodiment
The one-way throttle valve of present embodiment as shown in Figure 1, comprise and have the valve body 3 that center flow channels and outer end are shaped on screw thread, the outer end of this runner leads to the 3-2 of valve core chamber that lays valve ball 2 through undergauge section 3-1, valve seat 1 is equipped with by screw thread in the inner of this runner, valve seat 1 has internal diameter less than the through hole 1-1 of steel ball size, and should pass through through aperture section 1-2 and external communications.Valve body 3 and valve seat 1 end outwardly are shaped on hexagon ring respectively, so that assembling.The outer end effective diameter of valve body 3---the core diameter of thread is greater than inner diameter, and undergauge section 3-1 and the 3-2 of valve core chamber are shaped on radially throttle orifice 3-3,3-4 respectively, and valve body 3 cylindricals of two throttle orifice correspondences are shaped on annular groove respectively.
Be furnished with the flow amplifier of above-mentioned one-way throttle valve as shown in Figures 2 and 3, comprise the main body 8 with pressure-gradient control valve import 6 and oil outlet, the pressure-gradient control valve 4 and the selector valve 9 that are communicated with through runner are housed in this main body.Ring runner 5 in pressure-gradient control valve import 6 and the main body 8 is communicated with, and the gap of this ring runner by pressure-gradient control valve 4 and main body 8 is towards the end face of pressure-gradient control valve 4 terminations 7.Safety valve 10 is equipped with at main body 8 places of the pressure-gradient control valve the other end.Pressure-gradient control valve import 6 is equipped with one-way throttle valve by internal thread.The concrete structure of one-way throttle valve is not given unnecessary details in addition referring to the description of Fig. 1.
During work, hydraulic oil is pushed valve ball 2 open, enters the endoporus 6 of flow amplifier by throttle orifice 3-3 and 3-4, thereby the end face through annular groove 5 and arrival pressure-gradient control valve 4 terminations 7, gap, promote spool end, realize the action of pressure-gradient control valve 4, to open each runner at spool and flow amplifier back.In this process, the shake of flow amplifier external host is when being transferred to flow amplifier, because the throttle orifice 3-3 of undergauge section and the dual throttling action of throttle orifice 3-4 of valve core chamber, make the pressure level-off that enters spool annular groove 5, thereby make the pressure stability that promotes pressure-gradient control valve 4, the pressure oscillation of the end of termination 7 simultaneously will react on the valve ball 2 of one-way throttle valve, to offset the compression shock of outside control mouth, further improve the spool stability of pressure-gradient control valve, guarantee the proper functioning of flow amplifier.
Claims (5)
1. one-way throttle valve, comprise the valve body with center flow channels, the outer end of described runner leads to the valve core chamber of laying valve ball through the undergauge section, valve seat is equipped with in the inner of described runner, described valve seat has internal diameter less than the through hole of steel ball size, it is characterized in that: the outer end effective diameter of described valve body is greater than inner diameter, and described undergauge section and valve core chamber are shaped on radially throttle orifice respectively.
2. one-way throttle valve according to claim 1, it is characterized in that: the valve body cylindrical of two throttle orifice correspondences is shaped on annular groove respectively.
3. flow amplifier of being furnished with one-way throttle valve, comprise the main body with pressure-gradient control valve import and oil outlet, the pressure-gradient control valve and the selector valve that are communicated with through runner are housed in the described main body at least, it is characterized in that: one-way throttle valve is equipped with in described pressure-gradient control valve import, described one-way throttle valve comprises the valve body with center flow channels, the outer end of described runner leads to the valve core chamber of laying valve ball through the undergauge section, valve seat is equipped with in the inner of described runner, described valve seat has internal diameter less than the through hole of steel ball size, the outer end effective diameter of described valve body is greater than inner diameter, and described undergauge section and valve core chamber are shaped on radially throttle orifice respectively.
4. according to the described flow amplifier of being furnished with one-way throttle valve of claim 3, it is characterized in that: the valve body cylindrical of two throttle orifice correspondences is shaped on annular groove respectively.
5. according to the described flow amplifier of being furnished with one-way throttle valve of claim 4, it is characterized in that: the ring runner in described pressure-gradient control valve import and the main body is communicated with, and the gap of described ring runner by pressure-gradient control valve and main body is towards the end face of pressure-gradient control valve termination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220732797 CN203176028U (en) | 2012-12-27 | 2012-12-27 | One-way throttle valve and flow amplifier provided with one-way throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220732797 CN203176028U (en) | 2012-12-27 | 2012-12-27 | One-way throttle valve and flow amplifier provided with one-way throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203176028U true CN203176028U (en) | 2013-09-04 |
Family
ID=49072731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220732797 Expired - Lifetime CN203176028U (en) | 2012-12-27 | 2012-12-27 | One-way throttle valve and flow amplifier provided with one-way throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203176028U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355436A (en) * | 2016-05-09 | 2017-11-17 | 镇江液压股份有限公司 | A kind of high stability pressure-gradient control valve |
| CN109162974A (en) * | 2018-09-05 | 2019-01-08 | 芜湖中意液压科技股份有限责任公司 | A kind of hydraulic steering gear LS oil circuit is integrated with one-way throttle valve |
-
2012
- 2012-12-27 CN CN 201220732797 patent/CN203176028U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355436A (en) * | 2016-05-09 | 2017-11-17 | 镇江液压股份有限公司 | A kind of high stability pressure-gradient control valve |
| CN109162974A (en) * | 2018-09-05 | 2019-01-08 | 芜湖中意液压科技股份有限责任公司 | A kind of hydraulic steering gear LS oil circuit is integrated with one-way throttle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHENJIANG HYDRAULICS CO., LTD. Free format text: FORMER NAME: ZHENJIANG HYDRAULIC PART FACTORY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 212021 Zhenjiang South Road, Jiangsu, No. 300 Patentee after: ZHENJIANG HYDRAULICS Co.,Ltd. Address before: 212021 Zhenjiang South Road, Jiangsu, No. 300 Patentee before: ZHENJIANG HYDRAULICS Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 212021 Zhenjiang South Road, Jiangsu, No. 300 Patentee after: ZHENJIANG HYDRAULICS Co.,Ltd. Address before: Jiangsu city of Zhenjiang province Zhu Fang Road 212005 No. 300 Patentee before: Zhenjiang Hydraulic Components Manufacturing Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |
|
| CX01 | Expiry of patent term |