CN2541624Y - Plunger pump - Google Patents
Plunger pump Download PDFInfo
- Publication number
- CN2541624Y CN2541624Y CN 01257192 CN01257192U CN2541624Y CN 2541624 Y CN2541624 Y CN 2541624Y CN 01257192 CN01257192 CN 01257192 CN 01257192 U CN01257192 U CN 01257192U CN 2541624 Y CN2541624 Y CN 2541624Y
- Authority
- CN
- China
- Prior art keywords
- variable
- plunger
- spring
- cylinder body
- pump
- 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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- Reciprocating Pumps (AREA)
Abstract
A plunger pump comprises a main body portion and a variation portion, wherein the rotation of a cylinder body is driven by a drive shaft which is arranged on the main body portion, the plungers and sliding shoes are moved to-and-fro in the cylinder body, thereby the oil charging or discharging of the system is achieved. The number of the plungers and the sliding shoes is changed from seven to nine, thereby the impulse force of the fluid quantity is decreased, further a newly designed oil-distributing plate is used, and thereby the flow distribution property is improved. The utility model has the advantages that the noise is greatly lowered, the physical and mental health of human is protected, and the environmental protecting requirement is realized.
Description
Technical field
The utility model relates to a kind of oil hydraulic pump.
Background technique
The CY14-IB series axial piston pump in past is widely used in the Hydraulic Power Transmission Systems such as forging and pressing, mine, metallurgy, lathe, engineering machinery, but because the plunger hole in its cylinder body is 7, the pollution that noise is big, cause environment, promptly influence people's physical and mental health, in the middle of this product is externally earned foreign exchange, former thus thereby be subjected to the restriction of user to this product.
Summary of the invention
The purpose of this utility model is, a kind of axial piston pump that can reduce noise, be fit to environmental requirement is provided.
The technical solution of the utility model is achieved in that and is provided with pump case, the pump housing on main body, in pump case and the pump housing, be provided with the transmission shaft that links to each other with driving mechanism, the transmission shaft the other end is provided with the variable head, be provided with backhaul dish and piston shoes at variable head downside, plunger one end is fixed on the piston shoes on the backhaul dish, the plunger the other end matches with the cylinder body plunger hole, is provided with oil distribution casing at cylinder body and plunger hole place.When driving mechanism drives transmission shaft, transmission shaft drives the cylinder body rotation, join oil by oil distribution casing, drive plunger and piston shoes during the cylinder body rotation, piston shoes drive the work of backhaul dish, when piston shoes the variable head by low level when a high position is moved, simultaneously also spur plunger and moved to a high position by low level, oil pump is by the inlet port oil suction, when piston shoes when variable head big-endian moves, simultaneously also spur plunger and move to low level, discharge pressure oil by oil outlet by a high position.Be provided with flange plate in the transmission axial end, in flange plate, be provided with outside framework oil seal.Plunger hole in cylinder body changes 9 into by 7, and plunger piston slippery boots changes 9 into by original 7.
It has variable body shell the variable part, in variable body shell, be provided with the variable piston, the variable piston is provided with servopiston, on servopiston, be with servo valve pocket, put at servovalve and be provided with central spindle of the spring, which is provided with inner spring and outer spring, outside central spindle of the spring, be provided with spring housing, be provided with the adjustment screw on the spring housing top,, come the oil pressure pressure of adjust system by adjusting the pretightening force that screw can change spring.
The utility model has improved flow distribution characteristics, thereby has reduced noise owing to reduced the pulsating force of flow.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the cross-sectional view of cylinder body;
Fig. 3 is the structural representation of oil distribution casing.
Embodiment
As shown in Figure 1, under the drive of transmission shaft 20 at driving mechanism, transmission shaft 20 drives cylinder body 24 rotations, oil distribution casing 23 work when cylinder body 24 rotations, drive plunger 25 and piston shoes 26 work during cylinder body 24 rotation simultaneously, drive 16 work of backhaul dish during piston shoes 26 work, when piston shoes 26 variable head 15 by low level when a high position is moved, also promote simultaneously plunger 25 and moved to a high position by low level, oil pump is by inlet port 22 oil suctions.When piston shoes 26 variable head 15 by a high position when low level moves, also spur plunger 25 simultaneously and move to low level by a high position, discharge pressure oil by oil outlet.Be provided with flange plate 19 in transmission shaft 20 terminations, in flange plate 19, be provided with outside framework oil seal 21, be provided with the pump housing 18 and pump case 17 on every side at transmission shaft.
The pressure adjustment of variable part is undertaken by adjusting screw, in upper flange 10, be provided with spring housing 11, when adjusting, remove end socket cap 13, unscrew locking nut 12, adjust adjusting screw 14, compression outer spring 7 and inner spring 8 act on the central spindle of the spring 9, when the pressure in the plunger reaches certain value, wherein pressure oil by fuel discharge port 22 and pump case 17 to lower flange 1 to variable piston 3 to servopiston 5, arrive servo valve pocket 6 again.When pressure during greater than spring force, promote servo valve pocket 6, thereby drive 3 motions of variable piston, 3 motions of variable piston drive 15 work of variable heads, and the drift angle of variable head 15 is reduced, and change the flow of pump.On variable body shell 2, be provided with dial 4.
As can be seen from Figure 2, when plunger 25 that matches with plunger 25 when cylinder body 24 and plunger hole are 7, during cylinder body 24 work, when oil is pressed in plunger 25 oil suctions, one section dead band is arranged in oil distribution casing 23, and when hydraulic oil is compressed suddenly or expands, the work of oil pump unsteady flow all produces bigger noise.When the plunger hole that plunger 25 and cylinder body 24 are matched was 9, pressure oil and oil suction ripple frequency reduced and good flow distribution characteristics, and noise reduces about 3～5 decibels when making oil pump systems work.
Among Fig. 3, in oil distribution casing 23, be provided with 2 pin-and-holes 28, be provided with mouse stern notch 27, when oil suction and pressure are oily,, can reduce the frequency of hydro pulse like this because the length of mouse stern notch 27 extends at oil suction groove 30 two ends and pressure oil groove 31 1 ends.
Claims (1)
1. plunger pump, it partly is made up of main body and variable, on main body, be provided with the pump case (17) and the pump housing (18), in the pump case (17) and the pump housing (18), be provided with transmission shaft (20), transmission shaft (20) one ends link to each other with driving mechanism, the other end is provided with variable head (15), be provided with backhaul dish (16) at variable head (15) near transmission shaft one side, be provided with the piston shoes (26) that are used for fixing the last fulcrum of plunger (25) on every side at backhaul dish (16), be provided with the cylinder body (24) that is used for fixing plunger (25) at backhaul dish (16) the other end, be provided with the oil distribution casing (23) of flow distribution characteristics at cylinder body (24) and plunger (25) one ends, be provided with fluid inlet union (22) at the pump housing (18) middle part, another opposite corresponding with it is provided with the fluid outlet connection, one end of transmission shaft is provided with blind flange (19), in blind flange (19), be provided with outside framework oil seal (21), on the variable part, be provided with variable body shell (2), what join with it has a variable piston (3), on variable piston (3), be provided with servopiston (5), be provided with servo valve pocket (6) in the servopiston (5), in servo valve pocket (6), be provided with central spindle of the spring (9), which is provided with inner spring (8) and outer spring (7), go up the coupled spring housing (11) that has at central spindle of the spring (9), be provided with spacing screw rod (14) and locking nut (12) on its top, outside spring housing (11), be provided with upper flange (10), on upper flange (10), the outer end socket cap (13) that is provided with of spring housing (11), be provided with lower flange (1) in variable shell (2) lower end, it is characterized in that: the plunger (25) that matches with cylinder body (24) is 9, and the piston shoes (26) that match with plunger (25) are 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01257192 CN2541624Y (en) | 2001-10-18 | 2001-10-18 | Plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01257192 CN2541624Y (en) | 2001-10-18 | 2001-10-18 | Plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2541624Y true CN2541624Y (en) | 2003-03-26 |
Family
ID=33666009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01257192 Expired - Lifetime CN2541624Y (en) | 2001-10-18 | 2001-10-18 | Plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2541624Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155368A (en) * | 2011-05-24 | 2011-08-17 | 钱永平 | Novel high-pressure plunger pump |
| CN102242700A (en) * | 2011-06-28 | 2011-11-16 | 张坚 | Novel variable oil pump |
| CN102338077A (en) * | 2011-09-29 | 2012-02-01 | 宁波明和力盛液压科技有限公司 | SM stepless variable piston pump |
| CN111997858A (en) * | 2020-09-10 | 2020-11-27 | 芜湖西南机械有限公司 | Structure composition of variable plunger pump and control method thereof |
-
2001
- 2001-10-18 CN CN 01257192 patent/CN2541624Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155368A (en) * | 2011-05-24 | 2011-08-17 | 钱永平 | Novel high-pressure plunger pump |
| CN102155368B (en) * | 2011-05-24 | 2014-03-05 | 钱永平 | High-pressure plunger pump |
| CN102242700A (en) * | 2011-06-28 | 2011-11-16 | 张坚 | Novel variable oil pump |
| CN102338077A (en) * | 2011-09-29 | 2012-02-01 | 宁波明和力盛液压科技有限公司 | SM stepless variable piston pump |
| CN102338077B (en) * | 2011-09-29 | 2013-11-20 | 宁波明和力盛液压科技有限公司 | SM stepless variable piston pump |
| CN111997858A (en) * | 2020-09-10 | 2020-11-27 | 芜湖西南机械有限公司 | Structure composition of variable plunger pump and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Shaoyang Hydraulic Co., Ltd. Document name: Correction notice |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |