CN105156373B - High-level oil tank with pressure and low oil supply pressure losses - Google Patents
High-level oil tank with pressure and low oil supply pressure losses Download PDFInfo
- Publication number
- CN105156373B CN105156373B CN201510529422.2A CN201510529422A CN105156373B CN 105156373 B CN105156373 B CN 105156373B CN 201510529422 A CN201510529422 A CN 201510529422A CN 105156373 B CN105156373 B CN 105156373B
- Authority
- CN
- China
- Prior art keywords
- pipe
- oil
- tank
- dynamic sealing
- pressure
- 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.)
- Active
Links
Abstract
The invention discloses a high-level oil tank with pressure and low oil supply pressure losses. The high-level oil tank solves the technical problems that lubricating oil is wasted and the environment is polluted due to the fact that the lubricating oil overflows from an air filter on the condition that the lubricating oil in an existing high-level oil tank is high in oil supply pressure, and emergent lubrication is not facilitated due to the fact that the lubricating oil in a tank body of the existing high-level oil tank needs to overcome spring force of a spring inside a one-way valve and resistance is lost during emergent lubrication. The high-level oil tank comprises a tank body. The bottom of the tank body is provided with a blow-off pipe and a working oil pipe. A blow-off valve is arranged on the blow-off pipe. A switching control valve is arranged on a working oil pipe. A connecting pipe is arranged on the top of the tank body. A throttling orifice set is arranged on the connecting pipe and connected with a prepressing type air filter through an overflowing pipe. An overflowing opening is formed in one side of the middle of the overflowing pipe and connected with an oil return pipe. An oil return peeping opening is formed in the oil return pipe. The high-level oil tank has the beneficial effects of being low in oil supply pressure loss, safe and environmentally friendly.
Description
Technical field
The present invention relates to the commonly used top petrol tank field such as lubricating oil system, sealing oil system, more particularly relate to
And the top petrol tank with pressure that a kind of loss of charge oil pressure is little.
Background technology
Top petrol tank be applied to compressor, turbine, gear drive, pump and driving machine etc. emergency standby
Use emergency tank；When lubricating oil system, sealing oil system and Control ＆ Protective break down, in equipment moderating process,
Top petrol tank is to ensure that a kind of precautionary measures that equipment safety is shut down, for ensureing to supply lubricating oil, Seal Oil and control enough
Oil, can effectively prevent device damage.
As shown in Figures 1 to 3, existing top petrol tank includes casing 10, and casing 10 is provided with air cleaner 11, described
Casing 10 on be connected with blow-off pipe 13, working tubing 15 and oil return pipe 18, described blow-off pipe 13 is provided with blowoff valve
12, working tubing 15 is arranged in parallel check valve 14 and by-pass switch 16, oil return pipe 18 has been provided with oil return viewport 17, institute
The check valve 14 stated includes valve body 14-1, valve gap 14-2, flap 14-3 and spring 14-4, described flap 14-3 and spring
14-4 is located in valve body 14-1, and described spring 14-4 two ends are connected with valve gap 14-2 and flap 14-3, respectively by spring 14-
4 flap 14-3 are pressed onto in valve body 14-1, and described flap 14-3 is provided centrally with through hole 14-3.1.
The operation principle of existing top petrol tank:
In main process equipment stand-alone debugging start-up course, the lubricating oil of petrol station passes through on the working tubing 15 of top petrol tank
By-pass switch valve 16, to casing 10 fuel feeding, has lubricating oil to overflow until seeing from oil return viewport 17, shows top petrol tank
Through being in the state of filling；
In main process equipment normal course of operation, close by-pass switch valve 16, due to the bullet of the spring 14-4 of check valve 14
The charge oil pressure effect of spring force and lubricating oil makes check valve 14 reverse blocking, and lubricating oil can only pass through the flap 14-3 of check valve 14
On add the through hole 14-3.1 of work to top petrol tank casing 10 oiling, the size of this through hole 14-3.1 is can meet casing 10 in note
Certain spillway discharge is had to be suitable after full oil；
When main process equipment break down need emergency lubrication when, the check valve 14 forward conduction function of top petrol tank, casing
After Action of Gravity Field overcomes the spring force of spring 14-4164 of check valve 14, each to main process equipment moistens lubricating oil in 10
A sliding point fuel feeding, pressure-oil tank in Fuel injection system, except the inevitable pressure loss that caused due to live pipeline arrangement with
Outward, need also exist for overcoming the spring force of the spring 14-4 of check valve 14；
Existing top petrol tank has the disadvantage in that
1st, in main process equipment stand-alone debugging start-up course, existing top petrol tank is larger in lubricating oil charge oil pressure or flow
In the case of, lubricating oil has little time to flow out from oil return pipe 18, leads to overflow from the air cleaner 11 of top petrol tank, causes lubricating oil
Waste, and cause the pollution to top petrol tank and environment.Avoid the appearance of this situation if necessary, can have two kinds of solutions
Mode: first kind of way, pay close attention to air cleaner 11 outlet and the oil return viewport 17 of top petrol tank, when there being lubrication oil spill
When going out, turn down or close by-pass switch valve 16 in time；But it is cumbersome to operate in Practical Project, do not meet man-machine setting yet
Meter principle；The second way, by top petrol tank top design liquid level sensor, and by-pass switch valve 16 is designed to electricity
Dynamic regulating valve or electric switching valve, interlocking automatically controls by-pass switch valve 16, so undoubtedly increased the cost input of system.
2nd, when main process equipment needs emergency lubrication, the lubricating oil in existing top petrol tank passes through unidirectional under gravity
During valve 14, in addition to needing to overcome due to the live pipeline inevitable pressure loss that causes of arrangement, need also exist for gram
Take the spring force of the spring 14-4 of check valve 14, there is certain drag losses, and be unfavorable for the lubrication of main frame；Even sometimes by
The spring force to overcome check valve 14 for the gravity deficiency producing in liquid level, the flap 14-3 of check valve 14 is spring 14-4's
Close in the presence of spring force, at this moment in casing 10, remaining lubricating oil can only pass through the through hole 14- of the flap 14-3 of check valve 14
3.1 pairs of main process equipment lubrications, limited by this lubricant effect of through hole 14-3.1, if this pressure loss will be made up, then
Need to improve the setting height(from bottom) of this top petrol tank, or the volume of increase fuel tank, this also results in the increase of system cost.
3rd, when environment temperature is very low, because petrol station passes through the through hole 14-3.1 of the flap 14-3 of check valve 14 to casing 10
In lubrication deep fat circular flow very little, the lubricating oil temperature in casing 10 can be made relatively low, viscosity becomes big or occurs condensing
Phenomenon, if at this moment run into system and need emergency lubrication, cannot play emergency lubrication effect；In order to solve this problem,
On the one hand in order to avoid blocking and condensing, then be accomplished by increasing the aperture of aperture 14-3 on check valve 14 flap 14-3, thus
Increased the spillway discharge of top petrol tank lubricating oil, but the loss of flow system flow and energy consumption can be led to；On the other hand can be to height
Position fuel tank and its pipeline carry out antifreeze cladding, undoubtedly also lead to the increase of construction cost.
How to solve the striving direction that above-mentioned technical problem has become those skilled in the art.
Content of the invention
The present invention, in order to overcome above-mentioned technical deficiency, provides a kind of structure simple, low cost, pressure during urgent fuel feeding
Loss is little, and the non lubricant oil in stand-alone debugging start-up course overflows, safety and environmental protection, but also can normal fuel injection fuel feeding during low temperature environment
The little top petrol tank with pressure of the pressure loss.
The present invention specifically employs the following technical solutions to achieve these goals:
A kind of little top petrol tank with pressure of charge oil pressure loss, including casing, described bottom half is provided with blow-off pipe
And working tubing, described blow-off pipe is provided with blowoff valve, described working tubing is provided with switching control pilot, described
Casing top is provided with connecting tube, and connecting tube is provided with restricting orifice group, and restricting orifice group is connected with precompressed by overflow pipe
Formula air cleaner, in the middle part of described overflow pipe, side is provided with overfall, and overfall is connected with oil return pipe, described oil return pipe
On be provided with oil return viewport.
Further, described restricting orifice group includes up-hole plate and orifice plate, between described up-hole plate and orifice plate
It is connected with tube channel, be provided with dynamic sealing flap in described tube channel, under dynamic sealing flap, be connected with flexible support bullet
Spring, described flexible support lower spring end is connected with orifice plate, and described dynamic sealing flap is provided with throttling pore, described
There is gap in dynamic sealing flap and up-hole plate bottom, dynamic sealing flap and flexible support spring ensure that restricting orifice group certainly
Lower and upper orifice restriction, one-way conduction from top to bottom.
Further, described dynamic sealing flap is discoid, and dynamic seal flap edge is symmetrically arranged with two positioning
Ear, is provided with two support blocks corresponding with two chucking lugs, described support block and up-hole plate bottom in described tube channel
The distance between more than chucking lug thickness.
Further, described switching control pilot is straight-through valve.
Further, described prepressing type air cleaner is located at the end of overflow pipe, and prepressing type air cleaner is from upper
And lower one-way conduction, need from bottom to top to overcome precompression.
Operation principle:
Main process equipment stand-alone debugging start and normal course of operation in, the work by top petrol tank of the lubricating oil of petrol station
Oil pipe, the switching control pilot of standard-sized sheet, to casing fuel feeding, after filling, are overflow from overflow pipe by the restricting orifice group above casing
Go out, overflow pipe lubricating oil out returns to main process equipment from oil return pipe, the oil return viewport on oil return pipe is used for observing casing
Whether interior lubricating oil is for completely, the flow of overflow pipe is determined by the size of the throttling pore in restricting orifice group.
Prepressing type air cleaner is located at the end of overflow pipe, and prepressing type air cleaner has certain pressure, and unidirectional
Conducting, lubricating oil enters oil pressure reduction in overflow pipe through the throttling pore of orifice plate group, and less than prepressing type air cleaner
Precompression, is not to be subject to resistance when air enters top petrol tank from atmospheric environment, when oil will pass through air mistake from top petrol tank
Filter needs to overcome the precompression of prepressing type air cleaner when flowing out, so, in equipment startup or normal course of operation, case
Lubricating oil in body can only overflow from overfall after restricting orifice group, is not in that lubricating oil overflows top petrol tank accident.
When main process equipment needs emergency lubrication, due to one-way conduction effect and the throttling of the air cleaner of prepressing type
The reversely unimpeded effect of orifice plate group, the switching control pilot that the lubricating oil in casing passes through standard-sized sheet under gravity is each to main frame
, in addition to the inevitable pressure loss causing due to live pipeline arrangement, there is not drag losses in individual oil site fuel feeding,
And be conducive to the lubrication of main process equipment, be also not in blocking in the case that environment temperature is low and condense it is ensured that top petrol tank
Emergency lubrcation is unobstructed, and in this process, switching control pilot is normally open it is not necessary to hand control switch control valve.
Beneficial effects of the present invention are as follows:
The setting of the restricting orifice group of the present invention and prepressing type air cleaner so that after in casing, lubricating oil is filled, only
Can overflow from overfall after restricting orifice group, it is to avoid lubricating oil in conventional art occurs and overflows from air cleaner and cause
The waste of lubricating oil, and the problems such as cause the pollution to top petrol tank and environment；
Meanwhile, when equipment needs emergency lubrication, the one-way conduction of the air cleaner of prepressing type acts on and throttle orifice
The reversely unimpeded effect of plate group, the lubricating oil in casing passes through the switching control pilot of standard-sized sheet under gravity to main process equipment
, in addition to the inevitable pressure loss being caused due to live pipeline arrangement, be there is not resistance and damage in each oil site fuel feeding
Lose, the circular flow of its lubricating oil it is ensured that remaining to normal fuel injection during low temperature environment, advantageously reduces the height of factory building, fall enough
Low factory building construction cost.
Brief description
Fig. 1 is the principle diagram of more representative normal pressure top petrol tank in prior art；
Fig. 2 is the cross section structure diagram of check valve in Fig. 1；
Fig. 3 is the cross section structure diagram after the valve plate boring of check valve in Fig. 2；
Fig. 4 is a kind of structural representation of the little top petrol tank with pressure of charge oil pressure of present invention loss；
Fig. 5 is the schematic diagram of Fig. 4；
Fig. 6 is the structural scheme of mechanism of restricting orifice group；
Fig. 7 is the structural representation of dynamic sealing flap in restricting orifice group；
Fig. 8 is the top view of Fig. 7；
Reference: 1- connecting tube, 2- restricting orifice group, 2-1- up-hole plate, 2-2- tube channel, 2-3- orifice plate, 2-4-
Dynamic sealing flap, 2-4.1- throttling pore, 2-4.2- chucking lug, 2-5- support block, 2-6- flexible support spring, 3- prepressing type
Air cleaner, 4- overflow pipe, 5- switching control pilot, 10- casing, 11- air cleaner, 12- blowoff valve, 13- blow-off pipe,
14- check valve, 14-1- valve body, 14-2- valve gap, 14-3- flap, 14-3.1- through hole, 14-4- spring, 15- working tubing, 16-
By-pass switch, 17- oil return viewport, 18- oil return pipe.
Specific embodiment
In order to those skilled in the art are better understood from the present invention, embodiment is made into one to the present invention below in conjunction with the accompanying drawings
Step describes in detail.
Embodiment 1
As shown in Figures 4 and 5, the present invention provides a kind of charge oil pressure loss little top petrol tank with pressure, including casing 10, institute
Casing 10 bottom stated is provided with blow-off pipe 13 and working tubing 15, and described blow-off pipe 13 is provided with blowoff valve 12, and it is special
Levy and be, described working tubing 15 is provided with switching control pilot 5, described casing 10 top is provided with connecting tube 1, connect
Restricting orifice group 2 is provided with pipe 1, restricting orifice group 2 is connected with prepressing type air cleaner 3 by overflow pipe 4, described overflows
Flow tube 4 middle part side is provided with overfall 4-1, and overfall 4-1 is connected with oil return pipe 18, and described oil return pipe 18 is provided with back
Oily viewport 17.
In the present embodiment, the setting of restricting orifice group 2 and prepressing type air cleaner 3 so that in casing 10 lubricating oil fill
Man Hou, can only overflow from overfall 4-1, it is to avoid lubricating oil in conventional art from air filtration after restricting orifice group 2
Device overflows and causes the waste of lubricating oil, and the problems such as cause the pollution to top petrol tank and environment；
Meanwhile, when equipment needs emergency lubrication, the one-way conduction of the air cleaner 3 of prepressing type acts on and throttle orifice
The reversely unimpeded effect of plate group 2, the lubricating oil in casing passes through the switching control pilot of standard-sized sheet under gravity to main process equipment
Each oil site fuel feeding, in addition to due to the live pipeline inevitable pressure loss that causes of arrangement, there is not resistance
Loss, the circular flow of its lubricating oil it is ensured that remaining to normal fuel injection during low temperature environment, advantageously reduces the height of factory building enough,
Reduce factory building construction cost.
Embodiment 2
As shown in Figs. 4-6, the present invention provides a kind of charge oil pressure loss little top petrol tank with pressure, including casing 10, institute
Casing 10 bottom stated is provided with blow-off pipe 13 and working tubing 15, and described blow-off pipe 13 is provided with blowoff valve 12, and it is special
Levy and be, described working tubing 15 is provided with switching control pilot 5, described casing 10 top is provided with connecting tube 1, connect
Restricting orifice group 2 is provided with pipe 1, restricting orifice group 2 is connected with prepressing type air cleaner 3 by overflow pipe 4, described overflows
Flow tube 4 middle part side is provided with overfall 4-1, and overfall 4-1 is connected with oil return pipe 18, and described oil return pipe 18 is provided with back
Oily viewport 17.
Described restricting orifice group 2 includes up-hole plate 2-1 and orifice plate 2-3, described up-hole plate 2-1 and orifice plate 2-3
Between be connected with tube channel 2-2, be provided with dynamic sealing flap 2-4 in described tube channel 2-2, under dynamic sealing flap 2-4
It is connected with flexible support spring 2-6, described flexible support spring 2-6 lower end is connected with orifice plate 2-3, described dynamic sealing valve
Throttling pore 2-4.1 is provided with lobe 2-4, described dynamic sealing flap 2-4 has gap with up-hole plate 2-1 bottom, described
Restricting orifice group 2 orifice restriction from bottom to top, one-way conduction from top to bottom, the setting structure of this structure simple it is easy to raw
Produce and manufacture, dynamic sealing flap and flexible support spring ensure restricting orifice group 2 orifice restriction from bottom to top, unidirectional from top to bottom
Conducting.
Embodiment 3
As shown in Fig. 4 is to 8, the present invention provides a kind of charge oil pressure loss little top petrol tank with pressure, including casing 10, institute
Casing 10 bottom stated is provided with blow-off pipe 13 and working tubing 15, and described blow-off pipe 13 is provided with blowoff valve 12, and it is special
Levy and be, described working tubing 15 is provided with switching control pilot 5, described casing 10 top is provided with connecting tube 1, connect
Restricting orifice group 2 is provided with pipe 1, restricting orifice group 2 is connected with prepressing type air cleaner 3 by overflow pipe 4, described overflows
Flow tube 4 middle part side is provided with overfall 4-1, and overfall 4-1 is connected with oil return pipe 18, and described oil return pipe 18 is provided with back
Oily viewport 17.
Described restricting orifice group 2 includes up-hole plate 2-1 and orifice plate 2-3, described up-hole plate 2-1 and orifice plate 2-3
Between be connected with tube channel 2-2, be provided with dynamic sealing flap 2-4 in described tube channel 2-2, under dynamic sealing flap 2-4
It is connected with flexible support spring 2-6, described flexible support spring 2-6 lower end is connected with orifice plate 2-3, described dynamic sealing valve
Throttling pore 2-4.1 is provided with lobe 2-4, described dynamic sealing flap 2-4 has gap, dynamically with up-hole plate 2-1 bottom
Sealing flap and flexible support spring ensure restricting orifice group 2 orifice restriction from bottom to top, one-way conduction from top to bottom.
Dynamic sealing flap 2-4 is discoid, and dynamic sealing flap 2-4 edge is symmetrically arranged with two chucking lug 2-4.2,
Be provided with two support blocks 2-5 corresponding with two chucking lug 2-4.2 in described tube channel 2-2, described support block 2-5 with
The distance between up-hole plate 2-1 bottom is more than the thickness of chucking lug 2-4.2.
Described switching control pilot 5 is straight-through valve.
Described prepressing type air cleaner 3 is located at overflow pipe 4 end, and prepressing type air cleaner 3 is unidirectional from top to bottom
Conducting.
The above, only presently preferred embodiments of the present invention, not in order to limit the present invention, the patent protection model of the present invention
Enclose and be defined by claims, the equivalent structure change that the specification of every utilization present invention and accompanying drawing content are made, in the same manner all
Should comprise within the scope of the present invention.
Claims (4)
1. the little top petrol tank with pressure of a kind of charge oil pressure loss, including casing (10), described casing (10) bottom is provided with
Blow-off pipe (13) and working tubing (15), described blow-off pipe (13) are provided with blowoff valve (12) it is characterised in that described
Switching control pilot (5) is provided with working tubing (15), described casing (10) top is provided with connecting tube (1), connecting tube (1)
On be provided with restricting orifice group (2), restricting orifice group (2) is connected with prepressing type air cleaner (3), institute by overflow pipe (4)
In the middle part of the overflow pipe (4) stated, side is provided with overfall (4-1), and overfall (4-1) is connected with oil return pipe (18), described oil return
Oil return viewport (17) is provided with pipe (18), described restricting orifice group (2) includes up-hole plate (2-1) and orifice plate (2-3),
It is connected with tube channel (2-2) between described up-hole plate (2-1) and orifice plate (2-3), be provided with described tube channel (2-2)
Dynamic sealing flap (2-4), is connected with flexible support spring (2-6), described flexible support spring under dynamic sealing flap (2-4)
(2-6) lower end is connected with orifice plate (2-3), and described dynamic sealing flap (2-4) is provided with throttling pore (2-4.1), institute
There is gap in the dynamic sealing flap (2-4) stated and up-hole plate (2-1) bottom, described restricting orifice group (2) is little from bottom to top
Hole throttles, one-way conduction from top to bottom.
2. the little top petrol tank with pressure of charge oil pressure according to claim 1 loss is it is characterised in that dynamic sealing flap
(2-4) it is discoid, dynamic sealing flap (2-4) edge is symmetrically arranged with two chucking lugs (2-4.2), described tube channel
(2-2) it is provided with two support blocks (2-5) corresponding with two chucking lugs (2-4.2), described support block (2-5) and upper hole in
The distance between plate (2-1) bottom is more than the thickness of chucking lug (2-4.2).
3. the little top petrol tank with pressure of charge oil pressure according to claim 1 loss is it is characterised in that described switch control
Valve (5) processed is straight-through valve.
4. the little top petrol tank with pressure of charge oil pressure according to claim 1 loss is it is characterised in that described prepressing type
Air cleaner (3) is located at overflow pipe (4) end, prepressing type air cleaner (3) one-way conduction from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510529422.2A CN105156373B (en) | 2015-08-26 | 2015-08-26 | High-level oil tank with pressure and low oil supply pressure losses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510529422.2A CN105156373B (en) | 2015-08-26 | 2015-08-26 | High-level oil tank with pressure and low oil supply pressure losses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105156373A CN105156373A (en) | 2015-12-16 |
| CN105156373B true CN105156373B (en) | 2017-01-25 |
Family
ID=54797369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510529422.2A Active CN105156373B (en) | 2015-08-26 | 2015-08-26 | High-level oil tank with pressure and low oil supply pressure losses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105156373B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168233A (en) * | 2016-09-28 | 2016-11-30 | 镇江市科能电力设备有限公司 | A kind of top petrol tank |
| CN106704280B (en) * | 2016-12-30 | 2018-04-06 | 中国重型机械研究院股份公司 | Multiple tube tank mounting and methods for using them |
| CN109281895B (en) * | 2018-11-20 | 2019-07-30 | 中联重科股份有限公司 | Hydraulic oil container and its oil-returning filtering device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3170912D1 (en) * | 1980-02-19 | 1985-07-18 | Gen Signal Corp | Oil level and flow sensing apparatus for vacuum pump service |
| CN201526793U (en) * | 2009-10-26 | 2010-07-14 | 飞翼集团有限公司 | Oil supply device for emergency of thin oil lubrication station |
| CN102141054A (en) * | 2011-04-26 | 2011-08-03 | 常州液压成套设备厂有限公司 | Pressure oil tank for hydraulic system |
| CN202228632U (en) * | 2011-09-29 | 2012-05-23 | 烟台禹成机械有限公司 | High-level oil tank exhaust and oil return device |
| CN203784610U (en) * | 2014-02-26 | 2014-08-20 | 宝山钢铁股份有限公司 | Power off protection high position oil tank device using compressed air as power |
-
2015
- 2015-08-26 CN CN201510529422.2A patent/CN105156373B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105156373A (en) | 2015-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105156373B (en) | High-level oil tank with pressure and low oil supply pressure losses | |
| CN205639582U (en) | Double -clutch gearbox's oil feeding system | |
| CN202370918U (en) | Hydraulic drive device of thickener | |
| CN102220923A (en) | Diesel-air separator for diesel engine | |
| CN204344191U (en) | Lubrication system for internal combustion engine and there is its vehicle | |
| CN202139038U (en) | Return oil preventing non-return valve | |
| CN203603851U (en) | Wind-solar hybrid automatic foam discharge device | |
| CN203225616U (en) | 600MW nuclear power conventional island auxiliary generator seal oil system | |
| CN203051915U (en) | Electro-hydraulic integrated control device applied to valve control | |
| CN203856519U (en) | High-level lubricating oil tank assorted for steam turbines | |
| CN103206325A (en) | Fuel pump with safety valve | |
| CN205298119U (en) | Multi -functional integrated valves of steering wheel | |
| CN204201441U (en) | A kind of centrifuge oil supply system top petrol tank | |
| CN201695384U (en) | Reservoir high water level flat-plate closing flood-discharge door | |
| CN202188287U (en) | Integrated valve block device capable of relieving pressure | |
| CN203125140U (en) | Oil drainage block and oil absorption hydraulic circuit for sliding block type static pressure guide rail | |
| CN203113290U (en) | Novel flap valve control system | |
| CN202140378U (en) | Oil suction and return filter system for protecting two-way check valve | |
| CN203044458U (en) | Non-loaded starting high-pressure pipeline pressure relief mechanism of high-pressure cleaning machine | |
| CN103302548B (en) | The vapor liquid equilibrium device of vertical ram milling head | |
| CN204493313U (en) | Movable oil-pressure pump station device | |
| CN203175727U (en) | Fuel pump with safety valve | |
| CN205532770U (en) | Take tri -valve set 's steam turbine to use high -order oil tank | |
| CN204554323U (en) | A kind of oil pump | |
| CN205823582U (en) | Oil level controllers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |