CN209244809U - A kind of hydro-cushion screw pump - Google Patents
A kind of hydro-cushion screw pump Download PDFInfo
- Publication number
- CN209244809U CN209244809U CN201822263524.6U CN201822263524U CN209244809U CN 209244809 U CN209244809 U CN 209244809U CN 201822263524 U CN201822263524 U CN 201822263524U CN 209244809 U CN209244809 U CN 209244809U
- Authority
- CN
- China
- Prior art keywords
- spool
- pump
- pump housing
- rear end
- end cap
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 22
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model discloses a kind of hydro-cushion screw pumps, including the pump housing, rear end cap, bearing block forms pump chamber in the pump housing, oil inlet is arranged on the upside of the pump housing, oil outlet is provided on the downside of the pump housing, spool cavity is formed on the downside of the pump housing between inner wall and bushing lateral wall, spool cavity is arranged between rear end cap and oil outlet, and the top setting of spool cavity is jagged；Spool is provided in spool chamber body, the top lower part of spool can block notch, adjust bolt through sealing nut device on rear end cap, one end is located at the outside of rear end cap, the other end protrudes into spool chamber body through rear end cap, and one end end in pump chamber is provided with valve seat；Spring is provided in spool chamber body, an end device of spring is on valve seat, and another end device is in spool tail portion.The problem of the utility model can effectively solve the problem that existing hydro-cushion screw pump when oil outlet valve is not opened or blocked, and is easy to appear oil pressure in the pump housing and is unable to get release, and then is easy to damage the pump housing.
Description
Technical field
The utility model relates to a kind of hydro-cushion screw pumps.
Background technique
Screw pump is rotator type positive displacement pump, it is to utilize the screw rod theory of engagement, mutual in pump block by the screw rod of rotation
Engagement, transported medium be enclosed in engagement it is intracavitary, be pushed into outlet to continuously and smoothly axially along a screw, provided surely for system
Fixed pressure.Screw pump is suitable for conveying various non-corrosive oils and similar oil and lubricating liquid.
Existing hydro-cushion screw pump is because design is not reasonable, when oil outlet valve is not opened or blocked, is easy
Occur that oil pressure is unable to get release in the pump housing, and then the problem of be easy to damage the pump housing.
Utility model content
The purpose of the utility model is to provide a kind of hydro-cushion screw pumps, solve existing hydro-cushion screw pump and are going out
When hydraulic fluid port valve is not opened or blocked, the problem of being easy to appear oil pressure in the pump housing and be unable to get release, and then be easy to damage the pump housing.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of hydro-cushion screw pump, including pump
The rear end cap of pump housing rear end is arranged in body, and the bearing block of pump housing front end is arranged in, and pump chamber, setting in pump chamber are formed in the pump housing
There is bushing, driving screw rod is provided in bushing and engages the driven screw of adaptation with driving screw rod, is provided with and pumps on the upside of the pump housing
The oil inlet of chamber connection, is provided with oil outlet be connected to pump chamber on the downside of the pump housing, pump housing downside inner wall and bushing lateral wall it
Between form spool cavity, spool cavity is arranged between rear end cap and oil outlet, the top of spool cavity be provided with it is fuel-displaced
The tail portion of the notch that mouth is connected, spool cavity is connected to by pump chamber with oil inlet；Spool is provided in spool chamber body, spool
Top lower part can block notch, and rear end cap is provided with adjusting bolt, adjust bolt through sealing nut device on rear end cap,
One end is located at the outside of rear end cap, and the other end protrudes into spool chamber body through rear end cap, one end end setting in pump chamber
There is valve seat；Spring is provided in spool chamber body, an end device of spring is on valve seat, and another end device is in spool tail portion.
Further, the section of valve seat is T-shaped, and spring is set in thereon.
Further, the tail section of spool is T-shaped, and spring is set in thereon.
Further, it is provided with inclined-plane at the top of spool cavity, step compatible with inclined-plane is provided in the middle part of spool
Face.
The utility model has the beneficial effects that realizing profit because spool is opened when valve is not opened or blocked when oil pressure in the pump housing
Lubricating oil reflux, and then realize the purpose for reducing oil pressure, it can effectively solve the problem that existing hydro-cushion screw pump in oil outlet valve
When not opening or blocking, the problem of being easy to appear oil pressure in the pump housing and be unable to get release, and then be easy to damage the pump housing.Structure simultaneously
Simply, rationally, it is easy to accomplish.
Below with reference to drawings and examples, the utility model is described in detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram at the position the utility model A.
Specific embodiment
Embodiment, a kind of hydro-cushion screw pump as shown in Figure 1 and Figure 2, including the pump housing 1, after 1 rear end of the pump housing is set
End cap 2 is arranged in the bearing block 3 of 1 front end of the pump housing, pump chamber 4 is formed in the pump housing 1, is provided with bushing 5 in pump chamber 4, in bushing 5
It is provided with driving screw rod and engages the driven screw of adaptation with driving screw rod, be provided with the oil inlet being connected to pump chamber 4 on the upside of the pump housing 1
Mouth 6, the downside of the pump housing 1 is provided with the oil outlet 7 being connected to pump chamber 4, forms between 1 downside inner wall of the pump housing and 5 lateral wall of bushing
There is spool cavity 8, spool cavity 8 is arranged between rear end cap 2 and oil outlet 7, and the top of spool cavity 8 is provided with and oil outlet
The tail portion of 7 notches 9 being connected, spool cavity 8 is connected to by pump chamber 4 with oil inlet 6；Spool 10 is provided in spool cavity 8,
The top lower part of spool 10 can block notch 9, and rear end cap 2, which is provided with, adjusts bolt 11, adjust bolt 11 and filled by sealing nut
It sets on rear end cap 2, one end is located at the outside of rear end cap 2, and the other end protrudes into spool cavity 8 through rear end cap 2, is located at pump
One end end in chamber 4 is provided with valve seat 13；Spring 12 is provided in spool cavity 8, an end device of spring 12 is in valve seat 13
On, another end device is in 10 tail portion of spool.
The section of valve seat 13 is T-shaped, and spring 12 is arranged on it.The cylindrical body structure entirely different by two diameters of valve seat 13
At spring 12 is set on the small cylindrical body of diameter, and 12 one end of spring resists on the big cylindrical end face of diameter.
The tail section of spool 10 is T-shaped, and spring 12 is arranged on it.The top of spool cavity 8 is provided with inclined-plane, spool
10 middle part is provided with step surface 14 compatible with inclined-plane.
Under normal conditions, the top of spool 10 resists notch 9, and spool cavity 8 is not connected to directly with oil outlet 7.When the pump housing 1 is fuel-displaced
When 7 valves of mouth are not switched on or block, the oil pressure of the pump housing 1 is increased, and lubricating oil can support spool 10 into spool chamber through notch 9
Body 8, so that lubricating oil can flow to spool 10 through notch 9 and then flow to spool cavity 8, so that pump chamber 4 in turn, realize lubricating oil
Reflux reduces the oil pressure of oil outlet 7.
The utility model is exemplarily described in conjunction with attached drawing above.Obviously, the utility model implements not
It is limited by aforesaid way.As long as the various unsubstantialities that the method concept and technical solution that use the utility model carry out
Improvement；Or it is not improved, the above-mentioned conception and technical scheme of the utility model are directly applied into other occasions, at this
Within the protection scope of utility model.
Claims (4)
1. a kind of hydro-cushion screw pump, including the pump housing, are arranged in the rear end cap of pump housing rear end, the bearing of pump housing front end is set
, pump chamber is formed in the pump housing, bushing is provided in pump chamber, driving screw rod is provided in bushing and engages adaptation with driving screw rod
Driven screw, be provided with the oil inlet being connected to pump chamber on the upside of the pump housing, be provided on the downside of the pump housing be connected to pump chamber it is fuel-displaced
Mouthful, it is characterised in that: spool cavity is formed on the downside of the pump housing between inner wall and bushing lateral wall, spool cavity is arranged in rear end cap
Between oil outlet, the top of spool cavity is provided with the notch being connected with oil outlet, and the tail portion of spool cavity passes through pump chamber
It is connected to oil inlet；Spool is provided in spool chamber body, the top lower part of spool can block notch, and rear end cap is provided with adjusting spiral shell
Bolt adjusts bolt through sealing nut device on rear end cap, and one end is located at the outside of rear end cap, and the other end runs through rear end cap
It protrudes into spool chamber body, one end end in pump chamber is provided with valve seat；Spring, one end of spring are provided in spool chamber body
Device is on valve seat, and another end device is in spool tail portion.
2. hydro-cushion screw pump according to claim 1, it is characterised in that: the section of valve seat is T-shaped, and spring is set in
Thereon.
3. hydro-cushion screw pump according to claim 1 or 2, it is characterised in that: the tail section of spool is T-shaped, bullet
Spring is arranged on it.
4. hydro-cushion screw pump according to claim 3, it is characterised in that: it is provided with inclined-plane at the top of spool cavity,
Step surface compatible with inclined-plane is provided in the middle part of spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822263524.6U CN209244809U (en) | 2018-12-31 | 2018-12-31 | A kind of hydro-cushion screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822263524.6U CN209244809U (en) | 2018-12-31 | 2018-12-31 | A kind of hydro-cushion screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209244809U true CN209244809U (en) | 2019-08-13 |
Family
ID=67535627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822263524.6U Active CN209244809U (en) | 2018-12-31 | 2018-12-31 | A kind of hydro-cushion screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209244809U (en) |
-
2018
- 2018-12-31 CN CN201822263524.6U patent/CN209244809U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231016 Address after: 242700 No. 59, Meilin Avenue, Huangshan high tech Industrial Development Zone, Anhui Province Patentee after: Mount Huangshan Aike Equipment Technology Co.,Ltd. Address before: 245000 No. 147, Xinxing 3rd road, Chengbei Industrial Park, Huizhou District, Huangshan City, Anhui Province Patentee before: HUANGSHAN AIKEN MACHINERY MANUFACTURING CO.,LTD. |