CN201925153U - Electromagnetic needle valve of electric hydraulic pump - Google Patents
Electromagnetic needle valve of electric hydraulic pump Download PDFInfo
- Publication number
- CN201925153U CN201925153U CN2010202095111U CN201020209511U CN201925153U CN 201925153 U CN201925153 U CN 201925153U CN 2010202095111 U CN2010202095111 U CN 2010202095111U CN 201020209511 U CN201020209511 U CN 201020209511U CN 201925153 U CN201925153 U CN 201925153U
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- valve body
- spool
- valve
- electric hydraulic
- hydraulic pump
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Abstract
The utility model provides an electromagnetic needle valve of an electric hydraulic pump, which belongs to the technical field of valves and solves problems of poor control precision and short service life of an existing needle valve. The electromagnetic needle valve comprises a valve body with a cavity and a valve spool disposed inside the valve body, an oil inlet hole and an oil outlet hole which are communicated with the cavity of the valve body are disposed on the lateral wall of the valve body, an oil return hole communicated with the cavity of the valve body is axially arranged at one end of the valve body, an operating portion capable of sealing the oil return hole is disposed at one end of the valve spool, a liquid flowing channel is radially arranged on the side of the valve spool, the oil inlet hole, the liquid flowing channel and the oil outlet hole are communicated with each other when the operating portion seals the oil return hole, the other end of the valve spool penetrates out of the other end of the valve body, the portion, which penetrates out of the valve body, of the valve spool is connected with a control element, and the control element can control movement of the valve spool. The electromagnetic needle valve of an electric hydraulic pump has the advantages of high control precision, long service life, capability of effectively controlling pressure inside a pressure container and the like.
Description
Technical field
The utility model belongs to valve technology field, relates to a kind of electromagnetic valve, particularly a kind of electromagnetic valve that is used on the electric hydraulic pump.
Background technique
The existing safety control means that are used for ultrahigh pressure vessel have multiple, mechanical type or dynamo-electric convolution are wherein arranged or be the control device of electronic type fully, aforesaid various controlling method, no matter be mechanical type or dynamo-electric convolution or be the control device of electronic type fully that it mostly has shortcomings such as complex structure, cost height, processing and fabricating difficulty, safety reliability difference.Obviously this with mechanical type or dynamo-electric convolution or be that the control device of electronic type realizes that the safety control of ultrahigh pressure vessel is ripe not enough technically fully, for this reason, people consider to change the safety control of ultrahigh pressure vessel into valve control.Solenoid valve is exactly a kind of in the valve control, and solenoid valve is the valve that utilizes the adhesive of electromagnet to come the pilot pressure medium to transmit.
For example, Chinese patent discloses a kind of needle valve ultrahigh pressure safety check [notice of authorization number be: CN 2402892Y], include one and be column and middle valve body with a circular hole, the circular hole of valve body be divided into the circular hole of three sections different-diameters and have first rank all, the second rank portion and the 3rd rank portion; One needle type valve core is tapered of cylinder front end and hollow, and this needle-valve spool is contained in the valve body, and the first rank portion in end and the valve body abuts against; One thrust spring is nested with on the outer wall of needle type valve core and is contained in the valve body; One valve seat is circular shape, is contained in the end in the vexed body and abuts against the second rank portion in valve body.When the pressure in the pressurized container during greater than the thrust of thrust spring, pressure in this pressurized container is needle type valve core jack-up, thereby closes the slit, makes extraneous gas can't enter in the pressurized container, gas in the pressurized container also can't spill from the slit simultaneously, the constant pressure in the container that keep-ups pressure.
Though above-mentioned needle valve ultrahigh pressure safety check can be effectively with the pressure in the pilot pressure container, but only close the slit by thrust spring control spool, if the elastic force of thrust spring is big inadequately, spool will seal incessantly slit, will cause whole control accuracy not high like this; And thrust spring has working life, and whole safety check just lost efficacy if thrust spring damages the back, it can only be thrown away after the inefficacy, caused the waste of resource.
Summary of the invention
The purpose of this utility model is to have the problems referred to above at existing technology, has proposed a kind of control accuracy height, long service life and the effective electric hydraulic pump electromagnetic valve of pilot pressure container inner pressure.
The purpose of this utility model can realize by following technical proposal:
The electromagnetic valve of this electric hydraulic pump, comprise valve body and be located at the interior spool of valve body with cavity, the sidewall of described valve body offers oil inlet hole and the oil outlet that is communicated with valve cavity, end at described valve body axially offers the spill port that is communicated with valve cavity, one end of described spool has the working part that can close spill port, the liquid passage excessively that the sidepiece of described spool is radially offered, described oil inlet hole when working part closes spill port, crossing liquid passage and oil outlet is communicated with, it is characterized in that, the other end of described spool passes the other end of valve body, the part that described spool passes valve body is connected with a control piece, and described control piece can be controlled moving of spool.
This electromagnetic valve is arranged in the electric hydraulic pump, and oil outlet is used for being connected with pressurized container, and its working principle is: hydraulic oil enters into valve body from oil inlet hole, passes through the liquid passage then, flow in the pressurized container through oil outlet; When the pressure in the pressurized container became big, control piece control spool moved, thereby makes spill port be opened, and unnecessary hydraulic oil flow back in the fuel tank through spill port.When the pressure in the pressurized container diminished, control piece control spool moved in the opposite direction, made spill port closed once more.Can guarantee the pressure in the pressurized container like this, and operate spool, working part can better be opened and closed spill port by control piece.
In the electromagnetic valve of above-mentioned electric hydraulic pump, described control piece is that an end is connected to the shift fork on the spool.
Here the shift fork of She Zhiing is made by metallic material, when the pressure in the pressurized container changes, and the moving of fork controls spool, thus working part can better be opened and closed spill port.
In the electromagnetic valve of above-mentioned electric hydraulic pump, the L-shaped and described shift fork of described shift fork can be hinged with valve end.
The purpose of She Zhiing is like this, presses shift fork gently at an end of " L " shape shift fork, and shift fork is hinged around valve end, and the other end of shift fork is then controlled spool and outwards moved, and spill port is opened in the moving process.Easy to operate like this, only need depress an end of shift fork gently and just can realize moving of spool.
In the electromagnetic valve of above-mentioned electric hydraulic pump, described working part front end is tapered.
It is cylindric that spill port is, and when working part was being closed spill port, tapered working part front end just was positioned at spill port, forms axial hard sealing with the spill port madial wall.This simple in structure, easy to process, good airproof performance in the using process.
In the electromagnetic valve of above-mentioned electric hydraulic pump, be provided with the thrust spring that is set on the spool in the described valve body, an end of described thrust spring is resisted against on the working part of above-mentioned spool.
The purpose that thrust spring is set is, the fork controls spool is outside when mobile, and thrust spring is compressed, and the thrust spring of compression has elasticity, if the shift fork the other end is during actuating pressure, the elastic force of thrust spring inwardly pushes back spool, closes spill port.
In the electromagnetic valve of above-mentioned electric hydraulic pump, have U type groove on the end of described shift fork, the end that above-mentioned spool stretches out valve body is connected in the described U type groove and with a nut and is connected.
The purpose of She Zhiing is like this, when shift fork when valve end is hinged, the hinged rotation of shift fork can cause an end of shift fork and spool clamping some distances that move up, and moves up together in order not drive spool, and U type groove is set on shift fork.Shift fork always is resisted against on the nut at shift fork when valve end is hinged.
In the electromagnetic valve of above-mentioned electric hydraulic pump, be provided with the O RunddichtringO between described valve body and the spool.The O RunddichtringO is set, makes better tightness between spool and the valve body, prevented the leakage of hydraulic oil.
Compared with prior art, the electromagnetic valve of this electric hydraulic pump has the following advantages:
1, the electromagnetic valve of this electric hydraulic pump hyperbaric environment that can suit, working pressure is generally at 60-70MPa.
2, on spool stretches out an end of valve body, be connected with shift fork, can easily realize moving of spool, thereby make things convenient for the pressure in the pilot pressure container, simple to operate.
3, between valve body and spool, be provided with seal ring, can make the better tightness of valve body and spool like this, prevented the leakage of hydraulic oil.
Description of drawings
Fig. 1 is the phase diagram of the electromagnetic valve of this electric hydraulic pump when installing.
Fig. 2 is the structural representation of the electromagnetic valve of this electric hydraulic pump.
Among the figure, 1, valve body; 11, cavity; 12, oil inlet hole; 13, oil outlet; 14, spill port; 2, spool; 21, working part; 22, cross the liquid passage; 3, control piece; 4, thrust spring; 5, nut; 6, O RunddichtringO; 7, iron core.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As illustrated in fig. 1 and 2, this electromagnetic valve is installed in the electric hydraulic pump, and electric hydraulic pump is mainly used in the power source of various hydraulic presses.This electromagnetic valve comprises valve body 1 with cavity 11 and the spool of being located in the valve body 12, the sidewall of valve body 1 offers oil inlet hole 12 and the oil outlet 13 that is communicated with valve body 1 cavity 11, one end of valve body 1 axially offers the spill port 14 that is communicated with valve body 1 cavity 11, the liquid passage 22 excessively that the sidepiece of spool 2 is radially offered, oil inlet hole 12, liquid passage 22 and oil outlet 13 connections excessively when working part 21 closes spill port 14.One end of spool 2 has the working part 21 that can close spill port 14, working part 21 ends here are tapered, working part 21 tips tapered when working part 21 is closed spill port 14 just are positioned at spill port 14, and the madial wall of the sidewall of working part 21 and spill port 14 forms hard sealing.
In order to realize the purpose of pressurize pressure limiting, the other end of spool 2 passes the other end of valve body 1, the part that spool 2 passes valve body 1 is connected with a control piece 3, the control piece 3 here is a shift fork, shift fork is made by metallic material, thereby shift fork can be controlled the switching that realizes between working part 21 and the spill port 14 of moving of spool 2.The shift fork here is L-shaped, has on the end of shift fork U type groove is arranged, and the end that spool 2 stretches out valve body 1 is connected in this U type groove.Stretch out at spool 2 on the end of valve body 1 one ends and be with nut 5, this nut 5 and shift fork against, prevent that shift fork from coming off when work, the shift fork shift fork is hinged with the end of valve body 1 under external force.As shown in Figure 1, the other end of shift fork is positioned at the below of electric hydraulic pump iron core 7, and the pressure inductor in iron core 7 and the pressurized container is connected, and the iron core 7 here can be controlled the lifting of the shift fork the other end.
When the pressure in the pressurized container does not reach setting value, spill port 14 need be closed.If seem more loaded down with trivial details when utilizing iron core 7 control shift forks in operation, so be provided with the reasoning spring that is set on the spool 2 in valve body 1, as depicted in figs. 1 and 2, an end of thrust spring 4 is resisted against on the working part 21, and the other end is resisted against valve body 1 inside.Here the thrust spring 4 of She Zhiing has spool 2 is pushed to the elastic force that working part 21 closes spill port 14.
Prevent the leakage of hydraulic oil, between valve body 1 and spool 2, be provided with O RunddichtringO 6.After O RunddichtringO 6 is set, make better tightness between spool 2 and the valve body 1.
The electromagnetic valve working principle of this electric hydraulic pump is as follows: electric hydraulic pump is under the situation of proper functioning, pressure in the pressurized container remains within the value of setting, this moment, hydraulic oil entered into valve body 1 from oil inlet hole 12, then by the liquid passage 22 excessively on the spool 2, flow in the pressurized container through oil outlet 13, to guarantee hydraulic pressure oil mass and the pressure in the pressurized container.When electric hydraulic pump occurs when unusual, pressure in the pressurized container may increase, when the pressure in the pressurized container becomes big, triggering is arranged on the inductor in the pressurized container, inductor gives iron core 7 energisings after receiving signal, after iron core 7 energising with an end of shift fork to pressing down, when one end of shift fork moves downward, shift fork can rotate around the end position of valve body 1, the other end of shift fork is resisted against on the nut 5 in the rotation process, shift fork has an outside active force to spool 2 makes spool 2 slowly to valve body 1 outside moving, this moment, shift fork had slight moving with respect to spool 2, working part 21 is separated with spill port 14 in the moving process, and unnecessary hydraulic oil flow back into the fuel tank from spill port 14.
Can guarantee the pressure in the pressurized container like this, and control moving of spool 2, working part 21 can better be opened and closed spill port 14 by shift fork.Be provided with inductor in pressurized container, setting can make this electromagnetic valve more accurate to the pressure control in the pressurized container like this.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used valve body 1, cavity 11, oil inlet hole 12, oil outlet 13, spill port 14, spool 2, working part 21, crossed terms such as liquid passage 22, control piece 3, thrust spring 4, nut 5, O RunddichtringO 6, iron core 7 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (7)
1. the electromagnetic valve of an electric hydraulic pump, comprise have cavity (11) valve body (1) and be located at spool (2) in the valve body (1), the sidewall of described valve body (1) offers oil inlet hole (12) and the oil outlet (13) that is communicated with valve body (1) cavity (11), end at described valve body (1) axially offers the spill port (14) that is communicated with valve body (1) cavity (11), one end of described spool (2) has the working part (21) that can close spill port (14), the liquid passage (22) excessively that the sidepiece of described spool (2) is radially offered, described oil inlet hole (12) when working part (21) closes spill port (14), crossing liquid passage (22) and oil outlet (13) is communicated with, it is characterized in that, the other end of described spool (2) passes the other end of valve body (1), the part that described spool (2) passes valve body (1) is connected with a control piece (3), and described control piece (3) can be controlled moving of spool (2).
2. the electromagnetic valve of electric hydraulic pump according to claim 1 is characterized in that, described control piece (3) is that an end is connected to the shift fork on the spool (2).
3. the electromagnetic valve of electric hydraulic pump according to claim 2 is characterized in that, the L-shaped and described shift fork of described shift fork can be hinged with valve body (1) end.
4. according to the electromagnetic valve of claim 1 or 2 or 3 described electric hydraulic pumps, it is characterized in that described working part (21) front end is tapered.
5. the electromagnetic valve of electric hydraulic pump according to claim 4, it is characterized in that, be provided with the thrust spring (4) that is set on the spool (2) in the described valve body (1), an end of described thrust spring (4) is resisted against on the working part (21) of above-mentioned spool (2).
6. according to the electromagnetic valve of claim 2 or 3 described electric hydraulic pumps, it is characterized in that having U type groove on the end of described shift fork, the end that above-mentioned spool (2) stretches out valve body (1) is connected in the described U type groove and with a nut (5) and is connected.
7. the electromagnetic valve of electric hydraulic pump according to claim 1 is characterized in that, is provided with O RunddichtringO (6) between described valve body (1) and the spool (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202095111U CN201925153U (en) | 2010-05-31 | 2010-05-31 | Electromagnetic needle valve of electric hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202095111U CN201925153U (en) | 2010-05-31 | 2010-05-31 | Electromagnetic needle valve of electric hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925153U true CN201925153U (en) | 2011-08-10 |
Family
ID=44429004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202095111U Expired - Lifetime CN201925153U (en) | 2010-05-31 | 2010-05-31 | Electromagnetic needle valve of electric hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201925153U (en) |
-
2010
- 2010-05-31 CN CN2010202095111U patent/CN201925153U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TAIZHOU JULI TOOLS CO., LTD. Free format text: FORMER OWNER: ZHANG YINGEN Effective date: 20140409 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 317605 TAIZHOU, ZHEJIANG PROVINCE TO: 317608 TAIZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140409 Address after: Taizhou City, Zhejiang province 317608 addlupu town Yuhuan County Xuanmen industrial city Patentee after: Taizhou Juli Tool Co., Ltd. Address before: 317605 Taizhou city of Zhejiang province science and Technology Industrial Park of Yuhuan County town of Yuhuan County Wu paragraph Truman Patentee before: Zhang Yingen |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |