CN202007753U - Variable displacement plunger pump - Google Patents
Variable displacement plunger pump Download PDFInfo
- Publication number
- CN202007753U CN202007753U CN2011201248928U CN201120124892U CN202007753U CN 202007753 U CN202007753 U CN 202007753U CN 2011201248928 U CN2011201248928 U CN 2011201248928U CN 201120124892 U CN201120124892 U CN 201120124892U CN 202007753 U CN202007753 U CN 202007753U
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- CN
- China
- Prior art keywords
- variable
- variable displacement
- piston
- plunger pump
- piston rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a variable displacement plunger pump, which comprises a shell and a variable displacement control system. The variable displacement control system comprises a variable displacement head. The variable displacement head is provided with a shifting pin. The shell positioned at the position of the variable displacement head is provided with an inner hole. A variable displacement piston is accommodated in the inner hole. The variable displacement piston is provided with a groove for containing the shifting pin. The inner hole is provided with a nick which is used for the shifting pin to pass through and move. The variable displacement piston is driven by a power device. The power device is a lever arranged on the shell. A piston rod of the variable displacement piston extends out of the shell and is hinged to the end part of a resistance arm of the lever in a sliding mode. The piston rod is matched with the shell in a sealing mode. An open end of the inner hole is positioned at one end of the piston rod. A sealing flange arranged between the open end and the piston rod is arranged for the sealing matching. The outer surface of the flange is combined with a base frame of the lever. The variable displacement plunger pump has a simple structure and is reliable to use. The flow regulation can be realized in the operating process of the variable displacement plunger pump.
Description
Technical field
The utility model relates to a kind of Variable plunger pump.
Background technique
Plunger pump is an important device of hydraulic system, and its relies on plunger to-and-fro motion in cylinder body, the volume of seal operation cavity volume is changed realize oil suction, presses oil.In use, customer requirements carries out in a big way adjusting to the output flow of plunger pump at any time.In the prior art, Variable plunger pump comprises housing, rear end cover, thrust plate, cylinder body, plunger, backhaul dish, pump shaft and variable control system.Variable control system comprises that variable is first-class.The pump shaft rotational support is on housing and rear end cover, and the one end is provided with thrust plate, and the other end by ball pivot with backhaul dish dress thereon.Be provided with cylinder body and plunger between thrust plate and the backhaul dish, the backhaul dish is pressed in the piston shoes of plunger on the variable head.The Flow-rate adjustment of plunger pump realizes by variable control system, but, the variable control system of Variable plunger pump is structural types such as hydraulic manual is servo, automatically controlled, screw thread transmission in the prior art, though above structure can realize the Flow-rate adjustment of plunger pump, but, their complex structures, processing difficulties.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of Variable plunger pump, and it simple in structure used reliably, can realize Flow-rate adjustment in running.
In order to solve the problems of the technologies described above, the technical solution of the utility model is:
A kind of Variable plunger pump, comprise housing and variable control system, this variable control system comprises the variable head, described variable head is provided with finger, the described housing that is positioned at variable head place has endoporus, and this endoporus holds the variable piston, and this variable piston has the groove of admitting finger, have on the endoporus for finger and pass and movable gap, the variable piston drives by power plant.
Described power plant are the lever that is arranged on the housing, and it is slide hinged in the resistance arm end of lever that the piston rod of described variable piston stretches out housing.
Described piston rod cooperates with housing seal.
It is opening end that described endoporus is positioned at piston rod one end, described being sealed and matched to being located at the sealing flange between this opening end and the piston rod, and the flange outside combines with the pedestal of described lever.
The utility model moves by the mobile drive finger of variable piston, the variable head is wound perpendicular to the axis of pump shaft swing, and changes the variable head and the angle of pump shaft, the stroke of plunger, finally realizes the Flow-rate adjustment of plunger pump.Of the present utility model simple in structure, use reliably, can in running, realize Flow-rate adjustment, can be applicable in lathe, engineering machinery and other hydraulic pressure installation.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an A-A sectional structure schematic representation among Fig. 1.
Among the figure: 1 housing, 2 flanges, 3 variable pistons, 4 levers, 7 pedestals, 8 fingers, 9 variable heads, 10 cylinder bodies, 11 pump shafts, 12 backhaul dishes, 13 thrust plates, 14 plungers.
Embodiment
As depicted in figs. 1 and 2, Variable plunger pump comprises housing 1, rear end cover, thrust plate 13, cylinder body 10, plunger 14, backhaul dish 12, pump shaft 11 and variable control system.Variable control system comprises variable head 9 etc.Pump shaft 11 rotational support are on housing and rear end cover, and the one end is provided with thrust plate 13, and the other end by ball pivot with backhaul dish 12 dresses thereon.Be provided with cylinder body 10 and plunger 14 between thrust plate 13 and the backhaul dish 12, backhaul dish 12 is pressed in the piston shoes of plunger 14 on the variable head 9.The Flow-rate adjustment of plunger pump realizes by variable control system, below it is described in detail.
Variable control system of the present utility model comprises variable head 9, and variable head 9 is provided with finger 8.The housing at variable head 9 places has endoporus, and this endoporus axis normal is in pump shaft 11 or be basically perpendicular to pump shaft 11.Endoporus holds variable piston 3, and this variable piston 3 has the groove of admitting finger 8, and the size of groove can make finger 8 be free to slide within it and can not be stuck.Have on the endoporus for finger 8 and pass and movable gap.Variable piston 3 drives by power plant, slides in endoporus to realize variable piston 3.Power plant drive to being arranged on the lever 4 on the housing 1, and it is slide hinged in the resistance arm end of lever 4 that the piston rod of described variable piston 3 stretches out housing 1.Figure 2 illustrates a kind of concrete structure of power plant.One end opening of endoporus, the piston rod of variable piston 3 stretches out housing from the bore openings end, and piston rod and housing 1 are sealed and matched, and are sealed and matched to being located at the sealing flange 2 between this bore openings end and the piston rod.Flange 2 outsides are in conjunction with the pedestal 7 of a lever, and the piston rod external part of variable piston 3 slides and is hinged in the slotted eye of the resistance arm end of lever 4.
Claims (4)
1. Variable plunger pump, comprise housing and variable control system, this variable control system comprises the variable head, it is characterized in that: described variable head is provided with finger, the described housing that is positioned at variable head place has endoporus, and this endoporus holds the variable piston, and this variable piston has the groove of admitting finger, have on the endoporus for finger and pass and movable gap, the variable piston drives by power plant.
2. Variable plunger pump according to claim 1 is characterized in that: described power plant are the lever that is arranged on the housing, and it is slide hinged in the resistance arm end of lever that the piston rod of described variable piston stretches out housing.
3. Variable plunger pump according to claim 2 is characterized in that: described piston rod cooperates with housing seal.
4. Variable plunger pump according to claim 3 is characterized in that: it is opening end that described endoporus is positioned at piston rod one end, described being sealed and matched to being located at the sealing flange between this opening end and the piston rod, and the flange outside combines with the pedestal of described lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201248928U CN202007753U (en) | 2011-04-26 | 2011-04-26 | Variable displacement plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201248928U CN202007753U (en) | 2011-04-26 | 2011-04-26 | Variable displacement plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202007753U true CN202007753U (en) | 2011-10-12 |
Family
ID=44749410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201248928U Expired - Lifetime CN202007753U (en) | 2011-04-26 | 2011-04-26 | Variable displacement plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202007753U (en) |
-
2011
- 2011-04-26 CN CN2011201248928U patent/CN202007753U/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 | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111012 |