CN1024947C - Oil pump and pipe joint used for double-meter pressure checker - Google Patents
Oil pump and pipe joint used for double-meter pressure checker Download PDFInfo
- Publication number
- CN1024947C CN1024947C CN 91107272 CN91107272A CN1024947C CN 1024947 C CN1024947 C CN 1024947C CN 91107272 CN91107272 CN 91107272 CN 91107272 A CN91107272 A CN 91107272A CN 1024947 C CN1024947 C CN 1024947C
- Authority
- CN
- China
- Prior art keywords
- plunger
- oil pump
- oil
- double
- screw mandrel
- 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 - Fee Related
Links
Images
Abstract
The present invention discloses an oil pump and a pipe joint device used for a double-meter pressure checker, which is composed of a plunger, a plunger sleeve, an external sleeve of the plunger, a double joint, a screw rod, an external sleeve of the screw rod, a screw rod screw nut, a three-way joint, a press tap, a press cap and an oil pipe. The present invention is suitable for detecting an ordinary pressure meter and an oxygen meter. The plunger which applies the oil pump and the structure of the pipe joint device is a pressure meter checking table which makes the horizontal motion. The present invention has the characteristics of no leakage of oil and large sustained pressure, and the present invention can obtain the effects of portable operation, stable pressurization and favorable voltage-stabilizing performance.
Description
The oil pump of double-meter pressure checker of the present invention relates to the mechanical pressure class technical field of metering, is applicable to the calibrating ordinarily manometer, oxygen gauge and hydraulic pressure, pneumatic shuttle.
The tensimeter of existing domestic production, the structure of the dual-purpose checker of oxygen gauge are made up of oil pump, lubricating cup, valve, base and pipe system, and pneumatic and manual two big classes are generally arranged: the pneumatic pressure gauge checker is used for producing in batches the producer or the big minority unit of calibrating amount of tensimeter, oxygen gauge more; Manual pressure table checker then since it need not source of the gas or power supply be used as power, and cheap, easy to operate and be widely used in metrological service and factories and miness, scientific research, health service unit.The Manual pressure table checker of domestic production at present divides by its pressuring method, can be divided into hand screw mandrel leather cup formula and hand pressure lever plunger type again, and wherein the direction of motion of plunger is vertical.The former has pressurization steadily, is convenient to control the advantage of reading, very easily damages but its weak point is key component " U " the type rubber seal of making in the pressure (leather cup); Gap leakage of oil between screw mandrel and the nut is serious; Pressurize and to bring the very situation of effort to the operator when big.The hand pressure lever plunger type has the good advantage of voltage regulation performance, but owing to be the one-way trip pressurization, its weak point is first pressurization difficulty, inconvenience control reading, and oil pump leaks serious, the situation that the O RunddichtringO is easy to damage.
The oil pump that the purpose of this invention is to provide a kind of double-meter pressure checker, if this oil pump is installed on the double-meter pressure checker, it is light that then checker can reach operation, pressurization is steady and voltage regulation performance is good, does not leak the purpose of oil and long service life.
The oil pump of double-meter pressure checker of the present invention is the core component of tensimeter, oxygen gauge checker.
Oil pump is by plunger (14), plunger bushing (13), plunger overcoat (11), screw mandrel (27), feed screw nut (18), screw mandrel overcoat (17), three-way connection (9) (including inlet valve, delivery valve), twin adapter (16), handwheel (19), handle (20,21) is formed.
1. the plunger of oil pump (14), plunger bushing (13), oil-feed valve seat (5), delivery valve seat (6) adopts GCr
15Bearing steel is made, and through quenching, temper makes it hardness and reaches 50-55HRC.Three-way connection (9), twin adapter (16), plunger overcoat (11), screw mandrel overcoat (17), square joint (1), handle (20,21) etc. No. 45 steel of usefulness are made, and handwheel (19) is made with HT20-40 cast iron, and the steel ball of turnover fuel tap adopts the high steel ball of precision, the plunger of oil pump and plunger bushing are the critical components of oil pump, its process is through modified, carries out rough turn on lathe, finish turning quenches then, corase grind, correct grinding and grinding are made, reach gap between plunger and the plunger bushing between 0.006～0.01mm, diameter of plunger is 10～16mm, and length is 150～200mm, and plunger bushing length is the structure of 80-130mm.Also be through modified into and out of the fuel tap seat equally,, make after the grinding in the lathe system of getting on the bus, quenching.
Other parts are made through turning, Milling Process.
2. plunger of oil pump (14) and plunger bushing (13) are packed in the plunger overcoat (11), and be pressed in the plunger bushing with twin adapter (16), screw mandrel connects with plunger by the gib head of screw mandrel head, the screw mandrel overcoat is connected with twin adapter by screw thread, will connect with screw mandrel overcoat (17) on feed screw nut (18) the screw-in screw mandrel and by screw thread then; Three-way connection (9) connects with plunger overcoat (11) by screw thread.Being contained in the three-way connection (9) into and out of fuel tap in the three-way connection, square joint are packed into by screw thread on the three-way connection, and will compress into and out of the fuel tap seat.Plunger is connected together the plunger overcoat by a twin adapter with adopting separation structure between the screw mandrel, and has adopted the hermetically-sealed construction of letter cap (28) and O type seal (29,30) in twin adapter.
3. when oil pump is worked, the oil suction of oil pump is rotated backward by the handwheel of oil pump, screw mandrel drives plunger and moves backward, this moment, the oil from lubricating cup was through inlet connector (3), square joint (1) enters three-way connection again, and this moment, the inlet valve steel ball (10) in the three-way connection was owing to be subjected to move the backward negative pressure of formation of plunger to open the valve port of oil-feed valve seat (5), this moment, the steel ball (8) of delivery valve was wound negative pressure and the valve port of cutting out delivery valve seat (6), and oil has just entered in the plunger bushing (13) like this; During the oil pump oil extraction, the rotation forward of armrest wheel, oil in the plunger bushing is pressed against three-way connection, this moment, the steel ball of inlet valve cut out inlet valve, and delivery valve is opened, oil enters next step valve body by delivery valve, and the leakage oil in the oil pump can only be got back to lubricating cup by drain mast joint (31) because of the effect of O RunddichtringO (29,30).
The oil pump of double-meter pressure checker of the present invention is compared with the oil pump of existing hand pressure lever plunger type checker, its effect is: 1, because the pressures partially of oil pump has adopted separated structures with the force part, promptly adding low pressure oil that pressure cap, seal release the gap of plunger and plunger bushing by a twin adapter all blocks and has directly flowed back to lubricating cup through the gap drain mast, the force part does not just have oil to leak out like this, for this reason, the maximum characteristics of this device are to have oil tight effect; 2. because oil pump is the piston structure of the tangential movement of employing, wherein diameter of plunger is 10～16mm, length is 150～200mm, the length of fit of plunger and plunger bushing is 80～130mm, the one stroke of plunger can make pressure reach more than the 80MPa, therefore, more can dwindle the power that is applied on the handwheel than hand pressure lever plunger oil pump, after tested, this plunger end is stressed can dwindle 138 times, its maximum pressure can reach more than the 125MPa, and plunger end stressed be linear increase basically, have the effect that pressurization is fast and operation is light; 3. plunger and plunger bushing have adopted finishing on technology, the process of Q-tempering, and the hardness height of plunger and plunger bushing like this, and also tolerance clearance is little, and length of fit is long, so be a kind of oil pump structure device of long service life.
Fig. 1 is the oil pump structure figure of this double-meter pressure checker, (2,4,7,12,15,23,25,26,32,33) packing ring among the figure for varying in size, and (22) are acorn nut, and (24) are flat key, and (28) are a times cap, and (34) are oil filter.
Embodiments of the invention are that this double-meter pressure checker is by oil pump, lubricating cup, valve, isolator, base and pipe system are formed, wherein oil pump is the core of checker, the processing and fabricating of oil pump is to be of a size of φ 12 * 170mm by plunger (11), plunger bushing (13) is φ 24 * 100mm, plunger overcoat (11) is φ 42 * 164mm, screw mandrel (27) is T18 * 4 * 210mm, feed screw nut (18) is M30 * 2mm for T18 * 4 * 60mm external thread, screw mandrel overcoat (17) is φ 42 * 145mm, three-way connection (9) is that 60 * 30 * 30mm(includes inlet valve, delivery valve), twin adapter (16) is long to be 70mm, two ends are M30 * 2mm, handwheel (19) is that the size of φ 206mm is made, material adopts bearing steel respectively, common iron, cast iron, red copper is through rough turn, finish turning, grind and quench, temper technology is made, wherein requiring the clearance fit between plunger and the plunger bushing is 0.006-0.01mm, quenching hardness reaches 50-55HRC, oil-feed valve seat (5), delivery valve seat (6) is packed in the three-way connection (9), the claimed structure compactness.
Packing ring that varies in size and times cap (28), square joint (1), handle (20,21) oil filters (34), drain mast joint (31) are all made through machine work, high-precision steel ball (8,10) diameter is respectively 6mm and 10mm, and acorn nut (22) flat key (24) and O RunddichtringO (29,30) are outsourcing piece.
During assembling, the strict control plunger bushing height in the plunger external trepanning of packing into has just exposed with plunger bushing about the step 0.1mm of plunger hole and has been advisable.Fit into, during delivery valve, strict control to pack into and be advisable about the step 0.1mm that the Kong Hougao of three-way connection portals into and out of the fuel tap seat.Connecting line system again after oil pump installs, be contained on the base at last, constitute the double-meter pressure checker, the use of the oil pump of this checker is: at first from the water filling in isolator of oxygen gauge stand, till seeing that the oil return valve flowline there are flowing out, the backing pump handwheel is pumped then, buy oil, and carry out deaeration, till the oil return valve flowline has oil to flow out, close oil return valve again, the pressurization of operation oil pump, observe tested ordinarily manometer or oxygen gauge indicating value, can carry out value testing ordinarily manometer or oxygen gauge with master gauge.Suitably control the size of oil return valve switch during release, can carry out step-down and return inspection.
Claims (4)
1, a kind of oil pump of double-meter pressure verifier, by big small washer, steel ball, acorn nut, key, times cap, oil filter, leaking pipe joint, the O RunddichtringO is formed, it is characterized in that the plunger (14) of oil pump and plunger bushing (13) pack in the plunger overcoat (11), twin adapter (16) is pressed in the plunger bushing, screw mandrel connects with plunger by the gib head of screw mandrel head, screw mandrel overcoat (17) connects with twin adapter by screw thread, and feed screw nut (18) is spun on the screw mandrel, and connect the oil pump that three-way connection (9) connects with plunger overcoat (11) by screw thread with screw mandrel cover (17) by screw thread.
2, oil pump according to claim 1 is characterized in that the gap between plunger (14) and the plunger bushing (13) is 0.006-0.01mm, diameter of plunger 10～16mm, and length is 150～200mm, plunger bushing length is 80～130mm.
3, oil pump according to claim 1 is characterized in that having in the twin adapter a times cap (28) and O RunddichtringO (29,30).
4, oil pump according to claim 1 is characterized in that being equipped with in the three-way connection (9) oil-feed valve seat (5), delivery valve seat (6) and steel ball (8,10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107272 CN1024947C (en) | 1991-08-12 | 1991-08-12 | Oil pump and pipe joint used for double-meter pressure checker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107272 CN1024947C (en) | 1991-08-12 | 1991-08-12 | Oil pump and pipe joint used for double-meter pressure checker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1059965A CN1059965A (en) | 1992-04-01 |
| CN1024947C true CN1024947C (en) | 1994-06-08 |
Family
ID=4908627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91107272 Expired - Fee Related CN1024947C (en) | 1991-08-12 | 1991-08-12 | Oil pump and pipe joint used for double-meter pressure checker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1024947C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458390C (en) * | 2007-10-31 | 2009-02-04 | 谢显奇 | Hydraulic fine-regulating apparatus |
| CN102926903B (en) * | 2012-11-16 | 2014-12-10 | 南通飞鲸发电设备有限公司 | Collecting block for high pressure fuel leak |
| CN103754721B (en) * | 2014-01-21 | 2016-08-17 | 刘小木 | Elevator car manual brake set |
| CN108871784B (en) * | 2018-04-27 | 2020-12-18 | 北京航天动力研究所 | Fixing device for liquid rocket engine thrust chamber airflow test |
-
1991
- 1991-08-12 CN CN 91107272 patent/CN1024947C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1059965A (en) | 1992-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107061090B (en) | Oil inlet and outlet composite control structure for high-pressure common rail pump | |
| CN1024947C (en) | Oil pump and pipe joint used for double-meter pressure checker | |
| CN107454928A (en) | A kind of electro-hydraulic servo power cylinder | |
| CN201702464U (en) | Precision hydraulic expansion mandrel | |
| CN207848070U (en) | A kind of automobile brake oil pipe testing machine | |
| CN2905256Y (en) | Combination type drawing die | |
| CN212265092U (en) | High-precision straight-stroke medium-temperature valve sealing filler assembling and fatigue testing device | |
| CN207104532U (en) | A kind of semi-automatic end face Plane surface grinding machine of plunger bushing production | |
| CN105665915A (en) | Large-tonnage friction welding machine | |
| CN205496787U (en) | Friction welding machine with reverse thrust of level four | |
| CN102861791B (en) | Hydraulic pneumatic linked straightening machine | |
| CN2101122U (en) | Oil pump and pipe joint device for pressure meter check device | |
| CN204322456U (en) | A kind of direct-connected all-electric injecting plasticizing drive system | |
| CN212371639U (en) | Reaming and honing clamp for delivery valve matching parts | |
| CN2339815Y (en) | Super-high-pressure plunger pump one-way valve | |
| CN114689238A (en) | High-pressure self-cleaning table type hydraulic source | |
| CN208587268U (en) | High pressure pump | |
| CN208514240U (en) | A kind of rolling bearing steel ball ball grinder | |
| CN205765552U (en) | Pull-down pressing mechanism on vertical steel ball process equipment | |
| CN205615035U (en) | Work piece compression fittings | |
| CN208913612U (en) | Thread bush through-hole and both ends screw thread process clamp special fixture | |
| CN2935107Y (en) | Pressure tester | |
| CN2502836Y (en) | Pressure rotor device of automatic bearing-ring internal grinder | |
| CN219617483U (en) | Air-to-liquid driven clamp system | |
| CN201752854U (en) | Hydraulic eccentric fixture for crank grinding |
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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |