CN206753835U - A kind of manual pump high/low pressure conversion device - Google Patents
A kind of manual pump high/low pressure conversion device Download PDFInfo
- Publication number
- CN206753835U CN206753835U CN201720090904.7U CN201720090904U CN206753835U CN 206753835 U CN206753835 U CN 206753835U CN 201720090904 U CN201720090904 U CN 201720090904U CN 206753835 U CN206753835 U CN 206753835U
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- China
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- valve element
- plunger case
- plunger
- oil
- manual pump
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Abstract
The utility model discloses a kind of manual pump high/low pressure conversion device, including cylindrical spool, valve element is provided with drain path, the oil inlet of drain path is located at the outer surface of valve element, its oil-out is located at the right side of valve element, valve element slide fit is in plunger case, the oil leak hole for being used for being connected with big plunger cavity is provided with plunger case, oil pressure chamber is provided with the left end of plunger case, oil pressure chamber is provided with manual pumps out hydraulic fluid port connecting hole with pump out that hydraulic fluid port connect manually, feedback spring installation cavity is provided with the right-hand member of plunger case, the feedback spring for making valve element axially produce pretightning force to left end is provided with feedback spring installation cavity, feedback spring installation cavity is provided with the passage connected with manual pump oil inlet；O-ring seal is provided between oil inlet left end and the plunger inside wall of cylinder on valve element.The utility model has the characteristics that compact-sized, reliable operation, firmly installed.
Description
Technical field
It the utility model is related to a kind of manual pump high/low pressure conversion device.
Background technology
Manual pump is one kind of hydraulic pump, and it, as hydraulic system power source, is that armstrong's patent can be converted into hydraulic energy
A kind of small-sized hydraulic device, mainly by fluid（Hydraulic oil, machine oil etc.）It is small with external form as medium, it is in light weight, it is easy to take
The features such as band, it is particularly suitable for the place of emergency and explosion danger.Current traffic accident rescue, earthquake disaster rescue,
In the rescues such as contingency rescue, manual pump plays key effect as hydraulic system power source.
The manual pump of single discharge capacity no longer adapts to the fast development of science and technology, and the manual pump of Double-discharge starts to be widely used, double
The manual pump feature of discharge capacity is low pressure and mass flow, high-pressure low-flow.To realize that the characteristics of Double-discharge is manual must then have on manual pump
Standby high/low pressure conversion device.
The content of the invention
The technical problems to be solved in the utility model is to provide a kind of manual pump high/low pressure conversion device, and it has structure tight
Gather, reliable operation, the features such as firmly installing.
In order to solve the above technical problems, technical solution adopted in the utility model is：
A kind of manual pump high/low pressure conversion device, including cylindrical spool, valve element are provided with drain path, and drain path enters
Hydraulic fluid port is located at the outer surface of valve element, and its oil-out is located at the right side of valve element, and valve element slide fit is set in plunger case on plunger case
There is the oil leak hole for being connected with big plunger cavity, be provided with oil pressure chamber in the left end of plunger case, oil pressure chamber is provided with pumping out manually
Hydraulic fluid port connection pumps out hydraulic fluid port connecting hole manually, and feedback spring installation cavity is provided with the right-hand member of plunger case, is installed in feedback spring
Intracavitary is provided with the feedback spring for making valve element axially produce pretightning force to left end, and feedback spring installation cavity is provided with and manual pump oil inlet
The passage of connection；O-ring seal is provided between oil inlet left end and the plunger inside wall of cylinder on valve element.
The utility model further improvement is that：
The valve pocket that plunger case and feedback spring installation cavity are integrated, the left part of valve pocket inner chamber is plunger case, and it is right
Portion is feedback spring installation cavity, and plunger case and feedback spring installation cavity are concentric reducing cavity, and feedback spring installation cavity diameter
More than the diameter of plunger case, valve pocket right part is threadedly coupled with plug, and plug is provided with the axle center hole connected with passage, and institute's valve pocket is left
Portion's external diameter is more than valve pocket right part external diameter, and valve pocket is interference fitted with the valve pocket mounting hole in manual pump case, outside valve pocket mounting hole
End is connected with screw plug thread seal, is pumped out hydraulic fluid port connecting hole manually and is located on screw plug, between screw plug and valve pocket mounting hole, is located at
The right side for pumping out hydraulic fluid port connecting hole manually is provided with O-ring seal.
The drain path of valve element includes radial hole and axial hole.
Radial hole runs through valve element, and the oil leak hole for being connected with big plunger cavity being provided with plunger case is two,
And it is symmetricly set on the both sides of plunger case.
It is using beneficial effect caused by above-mentioned technical proposal：
The utility model can be different according to load, realize the oil extraction of low pressure oil inlet big flow, high pressure oil inlet rill automatically
Oil extraction is measured, so as to complete the conversion of the high-low pressure of the manual pump of Double-discharge；Valve pocket uses with the valve pocket mounting hole in manual pump case
Hole is interference fitted mounting means, and the utility model has the characteristics that compact-sized, reliable operation, firmly installed.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the manual pump configuration schematic diagram of Double-discharge that the utility model is applied；
Fig. 3 is A-A sectional views of the Fig. 2 when realizing high-pressure small-displacement；
Fig. 4 is the structural representation of valve pocket component in Fig. 1；
Fig. 5 is Fig. 4 half sectional view.
In the accompanying drawings：1st, valve element；1-1, drain path oil inlet；1-2, drain path oil-out；1-3, draining lead to
The radial hole in road；1-4, drain path axial hole；2nd, big plunger cavity；3rd, oil leak hole；4th, oil pressure chamber；4-1, hydraulic fluid port is pumped out manually
Connecting hole；5th, feedback spring installation cavity；6th, the passage connected with manual pump oil inlet；7th, valve pocket；8th, plug；8-1, plug axle center
Hole；9th, screw plug；10th, small plunger chamber.
Embodiment
The utility model is further elaborated below in conjunction with the drawings and specific embodiments.
From the embodiment shown in Fig. 1-5, the present embodiment includes cylindrical spool 1, and valve element 1 is provided with drain path, let out
The oil inlet 1-1 of oily passage is located at the outer surface of valve element 1, and its oil-out 1-2 is located at the right side of valve element 1, and the slide fit of valve element 1 is in post
In plug cylinder, the oil leak hole 3 for being used for being connected with big plunger cavity 2 is provided with plunger case, oil pressure chamber is provided with the left end of plunger case
4, oil pressure chamber 4 is provided with pumps out hydraulic fluid port connecting hole 4-1 manually with pump out that hydraulic fluid port connect manually, is provided with and feeds back in the right-hand member of plunger case
Spring installation cavity 5, the feedback spring for making valve element 1 axially produce pretightning force to left end, feedback are provided with feedback spring installation cavity 5
Spring installation cavity 5 is provided with the passage 6 connected with manual pump oil inlet；On valve element 1 between oil inlet left end and the plunger inside wall of cylinder
Provided with O-ring seal.
The valve pocket 7 that plunger case and feedback spring installation cavity are integrated, the left part of the inner chamber of valve pocket 7 is plunger case, its
Right part is feedback spring installation cavity 5, and plunger case and feedback spring installation cavity 5 are concentric reducing cavity, and feedback spring installation cavity 5
Diameter is more than the diameter of plunger case, and the right part of valve pocket 7 is threadedly coupled with plug 8, and plug 8 is provided with the axle center hole connected with passage 6
8-1, institute's valve pocket left part external diameter are more than valve pocket right part external diameter, and valve pocket 7 is interference fitted with the valve pocket mounting hole in manual pump case, valve
The outer end of set mounting hole is connected with the thread seal of screw plug 9, is pumped out hydraulic fluid port connecting hole 4-1 manually and is located on screw plug 9, in screw plug 9 and
Between valve pocket mounting hole, O-ring seal is provided with positioned at the right side for pumping out hydraulic fluid port connecting hole 4-1 manually.
The drain path of valve element includes radial hole 1-3 and axial hole 1-4.
Radial hole 1-3 runs through valve element 1, and the oil leak hole 3 for being connected with big plunger cavity being provided with plunger case is
Two, and it is symmetricly set on the both sides of plunger case.
Mounting means：
The feedback spring installation cavity 5 for first loading spring shim, feedback spring in valve pocket 7, then plug 8 is screwed into valve pocket 7
Right part, manual pump case is preheated, then valve pocket component is pressed into valve body.
Operation principle：
When manual pump is in operating on low voltage, fluid enters big plunger cavity 2 and small plunger chamber 10 simultaneously, is then arranged by oil-out
Go out, now two plungers work simultaneously, are huge discharge, and when outlet pressure increases, pressure will feed back to the present apparatus by oil duct
Oil pressure chamber 4（The left end of valve element 1）, so as to produce the thrust for making valve element 1 move right, the pretension of the feedback spring of the right-hand member of valve element 1
Power is 3.5~5MPa（The high-low pressure conversion power of i.e. manual pump）, when the thrust that valve element 1 moves right is more than the pretension of feedback spring
During power, valve element 1 moves right, so that the oil leak hole 3 on plunger case connects with the oil inlet 1-1 on valve element 1, big plunger cavity 2
Interior fluid drains into manual pump oil inlet by axle center hole 8-1 of the drain path that valve element 1 is provided with through plug 8, passage 6, so as to
Realize high-pressure small-displacement.
Claims (4)
- A kind of 1. manual pump high/low pressure conversion device, it is characterised in that：Including cylindrical spool（1）, the valve element（1）Provided with letting out Oily passage, the oil inlet of the drain path（1-1）Positioned at valve element（1）Outer surface, its oil-out（1-2）Positioned at valve element（1） Right side, the valve element（1）Slide fit is provided with the plunger case and is used for and big plunger cavity in plunger case（2）It is connected Oil leak hole（3）, oil pressure chamber is provided with the left end of the plunger case（4）, the oil pressure chamber（4）Provided with pumping out hydraulic fluid port company manually Logical pumps out hydraulic fluid port connecting hole manually（4-1）, feedback spring installation cavity is provided with the right-hand member of the plunger case（5）, described anti- Present spring installation cavity（5）Interior be provided with makes valve element（1）The feedback spring of pretightning force, the feedback spring installation are axially produced to left end Chamber（5）Provided with the passage connected with manual pump oil inlet（6）；In the valve element（1）Upper oil inlet left end and the plunger inside wall of cylinder it Between be provided with O-ring seal.
- A kind of 2. manual pump high/low pressure conversion device according to claim 1, it is characterised in that：The plunger case and feedback The valve pocket that spring installation cavity is integrated（7）, the valve pocket（7）The left part of inner chamber is plunger case, and its right part is feedback bullet Spring installation cavity（5）, the plunger case and the feedback spring installation cavity（5）For concentric reducing cavity, and the feedback spring is pacified It behave affectedly（5）Diameter is more than the diameter of the plunger case, the valve pocket（7）Right part and plug（8）Threaded connection, the plug （8）Provided with the passage（6）The axle center hole of connection（8-1）, institute's valve pocket left part external diameter is more than valve pocket right part external diameter, the valve pocket （7）It is interference fitted with the valve pocket mounting hole in manual pump case, the outer end of the valve pocket mounting hole and screw plug（9）Thread seal connects Connect, it is described to pump out hydraulic fluid port connecting hole manually（4-1）Positioned at screw plug（9）On, in the screw plug（9）Between valve pocket mounting hole, position In pumping out hydraulic fluid port connecting hole manually（4-1）Right side be provided with O-ring seal.
- A kind of 3. manual pump high/low pressure conversion device according to claim 2, it is characterised in that：The valve element is let out Oily passage includes radial hole（1-3）And axial hole（1-4）.
- A kind of 4. manual pump high/low pressure conversion device according to claim 3, it is characterised in that：The radial hole（1-3） Run through valve element（1）, be provided with the plunger case for the oil leak hole that is connected with big plunger cavity（3）For two, and it is right Claim the both sides for being arranged on the plunger case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720090904.7U CN206753835U (en) | 2017-01-22 | 2017-01-22 | A kind of manual pump high/low pressure conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720090904.7U CN206753835U (en) | 2017-01-22 | 2017-01-22 | A kind of manual pump high/low pressure conversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206753835U true CN206753835U (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720090904.7U Active CN206753835U (en) | 2017-01-22 | 2017-01-22 | A kind of manual pump high/low pressure conversion device |
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| CN (1) | CN206753835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187200A (en) * | 2018-10-13 | 2019-01-11 | 西安航天动力测控技术研究所 | A kind of side crops industry manual loading experimental rig for test of static strength |
-
2017
- 2017-01-22 CN CN201720090904.7U patent/CN206753835U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187200A (en) * | 2018-10-13 | 2019-01-11 | 西安航天动力测控技术研究所 | A kind of side crops industry manual loading experimental rig for test of static strength |
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