CN201225251Y - High-pressure high-efficiency hand pressure air pump - Google Patents
High-pressure high-efficiency hand pressure air pump Download PDFInfo
- Publication number
- CN201225251Y CN201225251Y CNU2008201093959U CN200820109395U CN201225251Y CN 201225251 Y CN201225251 Y CN 201225251Y CN U2008201093959 U CNU2008201093959 U CN U2008201093959U CN 200820109395 U CN200820109395 U CN 200820109395U CN 201225251 Y CN201225251 Y CN 201225251Y
- Authority
- CN
- China
- Prior art keywords
- pressure
- cylinder
- connecting rod
- low
- chamber
- 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
Links
Images
Abstract
The utility model discloses a high-pressure high-efficiency hand compression pump which comprises a compression bar mechanism, a cylinder body and a base, and is characterized in that the compression bar mechanism mainly comprises a rocking bar mechanism and a guide mechanism, wherein the rocking bar mechanism and the guide mechanism are both arranged on the base; the cylinder comprises a low-pressure cylinder and a pressure increase cylinder; and the low-pressure cylinder and the pressure increase cylinder are communicated with a gas circuit pipeline through a one-way valve and are both arranged in the base. The high-pressure high-efficiency hand compression pump increases a high-pressure manufacture part, the pressure of direct output gas can reach more than 10MPa, thus, the use requirements of the pressure source of high-pressure gas are satisfied, the diameter of the cylinder is increased to more than 2 times, and the compression range is increased to 1.5 times, therefore, the total compression efficiency is improved about 6 to 8 times than that of an original hand compression pump, the work time is saved, the work efficiency is improved, and the secondary pressure increase is removed. The utility model can be used as a regeneration product for previous products.
Description
Technical field
The utility model relates to a kind of hand air pump that is used for the pressure meter calibration system, being specifically related to a kind of direct output gas pressure can reach more than the 10MPa, satisfy the usage requirement of pressurized gas potential source, saved the operating time, improved the high efficient, high pressure hand air pump of working efficiency.
Background technique
Employed gas pressure gage in fields such as industrial production, pressure measurement in use for some time, all will carry out verification to it, to determine whether this gas pressure gage is accurate.The used traditional gas pressure calibrator of calibrating pressure gauge mainly includes: gas pressure pump, pressure vernier device, pressure connecting head and pressure piping.Wherein existing the gas pressure pump to make when pressing usually wastes time and energy, and the gas pressure pump that uses in pressure meter calibration instrument or pressure meter calibration system at present is single piston type hand air pump, be subjected to piston stroke and the people restriction of exerting pressure, maximum delivery pressure can in use will not carry out secondary booster greater than 4MPa just can reach usage requirement; Make and press efficient low, the operation of will repeatedly exerting pressure in the use just can be finished, and continuous operation allows the people feel very tired out, and each calibration takies for a long time, and working efficiency is very low.
Summary of the invention
The purpose of this utility model is to provide a kind of direct output gas pressure can reach more than the 10MPa, satisfies the usage requirement of pressurized gas potential source, has saved the operating time, has improved the high efficient, high pressure hand air pump of working efficiency.
For reaching above-mentioned purpose, the concrete content of the utility model is:
A kind of high efficient, high pressure hand air pump comprises: pressure lever mechanism, cylinder body and base;
Wherein said pressure lever mechanism mainly is divided into a slotted link mechanism and a guide mechanism, and slotted link mechanism and guide mechanism all are located on the base; Described cylinder body is divided into low-pressure cylinder and pressurized cylinder, and low-pressure cylinder and pressurized cylinder are communicated with by one-way valve and gas path pipe, and all are located at base inside.
Wherein slotted link mechanism includes head rod, second connecting rod, the 3rd connecting rod, the 4th connecting rod, depression bar and handle, handle is connected an end of depression bar, the other end of depression bar is connected with head rod and is fixing, the other end of head rod is connected on the base with first pin, and head rod is the fulcrum left-right rotation with first pin; Described the 3rd connecting rod one end is connected on the base with second pin, and the 3rd connecting rod is the fulcrum left-right rotation with second pin; Wherein said second connecting rod links together head rod and the 3rd connecting rod by the 3rd pin, and the 4th connecting rod one end is also sold by the 3rd and is connected to second connecting rod and is connected on the fulcrum with the public of the 3rd connecting rod.
Wherein said guide mechanism includes: big connecting rod, two bearings and guide groove;
Wherein the other end of the 4th connecting rod is hubbed at an end of big connecting rod, and the both sides that are connected on the fulcrum with big connecting rod at the 4th connecting rod are respectively equipped with bearing, and bearing is fixedly moving reciprocatingly on the guide groove, and guide groove is divided into lower rail.The last lower railway of guide groove helps to offset the Ying Xiangli of head rod, second connecting rod, the 3rd connecting rod and the 4th connecting rod.
Described low-pressure cylinder is surrounded by thin-walled and big piston, and wherein big piston is connected with big connecting rod, and the sealing gasket that makes the low-pressure cylinder sealing is arranged on big piston and thin-walled position contacting; Be provided with the low-pressure cylinder suction valve in the bottom of low-pressure cylinder, the low-pressure cylinder suction valve can air inlet in low-pressure cylinder; Establish first gas circuit between low-pressure cylinder and the pressurized cylinder, first gas circuit makes low-pressure cylinder be communicated with pressurized cylinder, is provided with the low-pressure cylinder outlet valve in first gas circuit, can the gas in first gas circuit be discharged in the pressurized cylinder by the low-pressure cylinder outlet valve.
Described pressurized cylinder is surrounded by the heavy wall pipe small piston, and small piston is divided into pressurized cylinder in the B chamber of front-end A chamber and rear end; Wherein small piston is located on the small rod, and small rod is affixed by big piston and big connecting rod, is provided with the sealing gasket that makes the pressurized cylinder sealing between small piston and heavy wall; Be provided with second gas circuit that is communicated with A chamber and B chamber in the small piston, establish an intervening valve on second gas circuit, the gas of first gas circuit at first enters the chamber by the low-pressure cylinder outlet valve, when pulling back piston, intervening valve is opened, the gas that enters the chamber by first gas circuit is entered in the B chamber of pressurized cylinder by intervening valve, thereby the B chamber air pressure that guarantees pressurized cylinder is 1MPa; Pushing ahead when drawing piston, intervening valve cuts out, to guarantee the B chamber gas boosting of pressurized cylinder; Be provided with the pressurized cylinder outlet valve that is connected with working line in the pressurized cylinder bottom,, just can enter in the working line by the pressurized gas in the B chamber of pipeline pressurized cylinder when pushing ahead when drawing piston.
Described pressurized cylinder is surrounded by the heavy wall pipe small piston, and small piston is divided into pressurized cylinder in the B chamber of front-end A chamber and rear end; Wherein small piston is located on the small rod, and small rod is affixed by big piston and big connecting rod, is provided with the sealing gasket that makes the pressurized cylinder sealing between small piston and heavy wall; Be provided with second gas circuit that is communicated with A chamber and B chamber in the small piston, establish an intervening valve on second gas circuit, the gas of first gas circuit at first enters the chamber by the low-pressure cylinder outlet valve, when pulling back piston, intervening valve is opened, the gas that enters the chamber by first gas circuit is entered in the B chamber of pressurized cylinder by intervening valve, thereby the B chamber air pressure that guarantees pressurized cylinder is 1MPa; Pushing ahead when drawing piston, intervening valve cuts out, to guarantee the B chamber gas boosting of pressurized cylinder; Be provided with the pressurized cylinder outlet valve that is connected with working line in the pressurized cylinder bottom,, just can enter in the working line by the pressurized gas in the B chamber of pipeline pressurized cylinder when pushing ahead when drawing piston.
Wherein low-pressure cylinder suction valve, low-pressure cylinder outlet valve, intervening valve and pressurized cylinder outlet valve all are one-way valve.
Wherein low-pressure cylinder suction valve, low-pressure cylinder outlet valve, intervening valve and pressurized cylinder outlet valve all are one-way valve.
The utility model high efficient, high pressure hand air pump has increased high pressure and has made the splenium branch, directly output gas pressure can reach more than the 10MPa, satisfy the usage requirement of pressurized gas potential source, cylinder bore increases more than 2 times, and compression stroke increases by 1.5 times, and therefore total compression efficiency improves about 6～8 times than former hand air pump, saved the operating time, improve working efficiency, removed secondary booster, can be used as the update product of previous generation's product.
Description of drawings
Fig. 1: be the working state sectional view of the utility model high efficient, high pressure hand air pump.
Fig. 2: be another working state sectional view of the utility model high efficient, high pressure hand air pump.
Embodiment
Below the effect forming and can produce with regard to the structure of the utility model high efficient, high pressure hand air pump, conjunction with figs. is described in detail as follows with preferred embodiment:
As shown in Figure 1, the working state sectional view for the utility model high efficient, high pressure hand air pump includes: pressure lever mechanism 1, cylinder body 2 and base 3.
Wherein said pressure lever mechanism 1 mainly is divided into a slotted link mechanism and a guide mechanism, wherein slotted link mechanism includes head rod 11, second connecting rod 12, the 3rd connecting rod 13, the 4th connecting rod 14, depression bar 15 and handle 16, handle 16 is connected an end of depression bar 15, the other end of depression bar 15 is connected with head rod 11 and is fixing, the other end of head rod 11 is connected on the base 3 with first pin 111, and head rod 11 can be the fulcrum left-right rotation with first pin 111; Described the 3rd connecting rod 13 1 ends are connected on the base 3 with second pin 131, and the 3rd connecting rod 13 can be the fulcrum left-right rotation with second pin 131; Wherein said second connecting rod 12 links together head rod 11 and the 3rd connecting rod 13 by the 3rd pin 121, and the 4th connecting rod 14 1 ends are also sold 121 by the 3rd and are connected to second connecting rod 12 and are connected on the fulcrum with the public of the 3rd connecting rod 13;
Described guide mechanism includes: big connecting rod 17, two bearings 18 and guide grooves 19;
Wherein the other end of the 4th connecting rod 14 is hubbed at an end of big connecting rod 17, and the both sides that are connected on the fulcrum with big connecting rod 17 at the 4th connecting rod 14 are respectively equipped with bearing 18; Guide groove 19 has the bar shaped track of circular arc for two ends, and bearing 18 is fixedly moving reciprocatingly on the guide groove 19, and the last lower wall of guide groove 19 helps to offset the Ying Xiangli of head rod 11, second connecting rod 12, the 3rd connecting rod 13 and the 4th connecting rod 14.
Described cylinder body 2 is divided into low-pressure cylinder 21 and pressurized cylinder 22.
Described low-pressure cylinder 21 is surrounded by thin-walled 31 and big piston 23, and wherein big piston 23 is connected with big connecting rod 17, and the sealing gasket that makes low-pressure cylinder 21 sealings is arranged on big piston 23 and thin-walled 31 position contacting; Be provided with low-pressure cylinder suction valve 27 in the bottom of low-pressure cylinder 21, low-pressure cylinder suction valve 27 can air inlet in low-pressure cylinder 21; Establish first gas circuit 4 between low-pressure cylinder 21 and the pressurized cylinder 22, first gas circuit 4 makes low-pressure cylinder 21 be communicated with pressurized cylinder 22, in first gas circuit 4, be provided with low-pressure cylinder outlet valve 26, can the gas in first gas circuit 4 be discharged in the pressurized cylinder 22 by low-pressure cylinder outlet valve 26.
Described pressurized cylinder 22 is surrounded by heavy wall 32 and small piston 25, and small piston 25 is divided into pressurized cylinder 22 in the B chamber of front-end A chamber and rear end; Wherein small piston 25 is located on the small rod 20, and small rod 20 is affixed by big piston 23 and big connecting rod 17, and 32 of small piston 25 and heavy walls are provided with the sealing gasket that makes pressurized cylinder 22 sealings; Be provided with second gas circuit 5 that is communicated with A chamber and B chamber in the small piston 25, establish an intervening valve 24 on second gas circuit 5, the gas of first gas circuit 4 at first enters the A chamber by low-pressure cylinder outlet valve 26, pulling back piston 23 and at 25 o'clock, intervening valve 24 is opened, the gas that enters the A chamber by first gas circuit 4 is entered in the B chamber of pressurized cylinder 22 by intervening valve 24, thereby the B chamber air pressure that guarantees pressurized cylinder 22 is 1MPa; Draw piston 23 and at 25 o'clock pushing ahead, intervening valve 24 cuts out, to guarantee the B chamber gas boosting of pressurized cylinder 22; Be provided with the pressurized cylinder outlet valve 28 that is connected with working line in pressurized cylinder 22 bottoms,, just can enter in the working line by the pressurized gas in the B chamber of pipeline pressurized cylinder 22 when pushing ahead when drawing piston 23 and 25.
Wherein low-pressure cylinder suction valve 27, low-pressure cylinder outlet valve 26, intervening valve 24 and pressurized cylinder outlet valve 28 all are one-way valve.
As shown in Figure 1, working state sectional view for the utility model high efficient, high pressure hand air pump, when the work air inlet, big piston 23 and small piston 25 are in front end, depression bar 15 can upwards be lifted and drive each connecting rod, thereby drives big connecting rod 17, can make gas enter low-pressure cylinder 21 from low-pressure cylinder suction valve 27, gas at small piston 25 front-end A air cavitys enters in the B air cavity by intervening valve 24, makes the air pressure of B air cavity remain on 1Mpa.As shown in Figure 2, when work is given vent to anger, depression bar 15 can move each connecting rod by downward pressure zone, thereby drive big connecting rod 17, gas can be entered in the A chamber of low-pressure cylinder 21 front ends by low-pressure cylinder outlet valve 26, gas in high pressure cylinder 22 can compress, when the air pressure in the A chamber during greater than the air pressure in B chamber, the gas in A chamber enters in the B chamber, and when the air pressure in the A chamber during less than the air pressure in the B chamber, intervening valve can cut out, when simultaneously the air pressure in the B chamber is greater than the air pressure of service pipe, the gas in B chamber enters working line by the one-way valve under the high-pressure cylinder, and when the air pressure in the B chamber during less than the air pressure of working line, the gas in the B chamber can compress in the B cylinder, pressurization.
From the above, the utility model high efficient, high pressure hand air pump design principle has the two large divisions to improve, and at first increases original cylinder bore, directly adds pressurized cylinder, and a combined operation is finished.The increase cylinder bore means to increase exerts pressure, and increasing pressurized cylinder more needs increase to exert pressure.Once Shu Chu atmospheric pressure is a definite value, and the pressure of once exerting pressure is definite value just, and pressurized cylinder is along with pressure increases, and exerting pressure also can increase, and therefore exerting pressure also is along with the pressure of exporting is increasing.Secondly, force application mechanism originally is simple, just depression bar carries out that moment rated transformation ratio finishes, newly-designed mechanical linkage booster body is the variable force structure, and when increasing along with cylinder compression ratio, the no-load voltage ratio of application of force moment is also increasing, reduced the application of force like this, can easily finish gas compression operation, the gas flow of compression is original 6～8 times, has improved efficient.Linkage mechanism and pressurized cylinder have increased the complexity of making; That has also condensed mechanism's supercharging and two kinds of technology of cylinder secondary booster is used in combination new thinking, new trial.
Though the utility model is described by previous embodiment, but still can change its form and details, make not breaking away under the spirit of the present utility model.Aforementioned is the most rational using method of the utility model, one of the mode that can specifically implement for the utility model only, but not as limit.
Claims (8)
1, a kind of high efficient, high pressure hand air pump comprises: pressure lever mechanism, cylinder body and base; It is characterized in that:
Wherein said pressure lever mechanism mainly is divided into a slotted link mechanism and a guide mechanism, and slotted link mechanism and guide mechanism all are located on the base; Described cylinder body is divided into low-pressure cylinder and pressurized cylinder, and low-pressure cylinder and pressurized cylinder are communicated with by one-way valve and gas path pipe, and all are located at base inside.
2, high efficient, high pressure hand air pump as claimed in claim 1, it is characterized in that, wherein slotted link mechanism includes head rod, second connecting rod, the 3rd connecting rod, the 4th connecting rod, depression bar and handle, handle is connected an end of depression bar, the other end of depression bar is connected with head rod and is fixing, the other end of head rod is connected on the base with first pin, and head rod is the fulcrum left-right rotation with first pin; Described the 3rd connecting rod one end is connected on the base with second pin, and the 3rd connecting rod is the fulcrum left-right rotation with second pin; Wherein said second connecting rod links together head rod and the 3rd connecting rod by the 3rd pin, and the 4th connecting rod one end is also sold by the 3rd and is connected to second connecting rod and is connected on the fulcrum with the public of the 3rd connecting rod.
3, high efficient, high pressure hand air pump as claimed in claim 1 is characterized in that wherein said guide mechanism includes: big connecting rod, two bearings and guide groove;
Wherein the other end of the 4th connecting rod is hubbed at an end of big connecting rod, and the both sides that are connected on the fulcrum with big connecting rod at the 4th connecting rod are respectively equipped with bearing, and bearing is fixedly moving reciprocatingly on the guide groove, and guide groove is divided into lower rail.
4, as claim 1,2 or 3 described high efficient, high pressure hand air pumps, it is characterized in that, described low-pressure cylinder is surrounded by thin-walled and big piston, and wherein big piston is connected with big connecting rod, and the sealing gasket that makes the low-pressure cylinder sealing is arranged on big piston and thin-walled position contacting; Be provided with the low-pressure cylinder suction valve in the bottom of low-pressure cylinder, the low-pressure cylinder suction valve can air inlet in low-pressure cylinder; Establish first gas circuit between low-pressure cylinder and the pressurized cylinder, in first gas circuit, be provided with the low-pressure cylinder outlet valve.
5, as claim 1,2 or 3 described high efficient, high pressure hand air pumps, it is characterized in that described pressurized cylinder is surrounded by the heavy wall pipe small piston, small piston is divided into pressurized cylinder in the B chamber of front-end A chamber and rear end; Wherein small piston is located on the small rod, and small rod is affixed by big piston and big connecting rod, is provided with the sealing gasket that makes the pressurized cylinder sealing between small piston and heavy wall; Be provided with second gas circuit that is communicated with A chamber and B chamber in the small piston, establish an intervening valve on second gas circuit; Be provided with the pressurized cylinder outlet valve that is connected with working line in the pressurized cylinder bottom.
6, high efficient, high pressure hand air pump as claimed in claim 4 is characterized in that described pressurized cylinder is surrounded by the heavy wall pipe small piston, and small piston is divided into pressurized cylinder in the B chamber of front-end A chamber and rear end; Wherein small piston is located on the small rod, and small rod is affixed by big piston and big connecting rod, is provided with the sealing gasket that makes the pressurized cylinder sealing between small piston and heavy wall; Be provided with second gas circuit that is communicated with A chamber and B chamber in the small piston, establish an intervening valve on second gas circuit; Be provided with the pressurized cylinder outlet valve that is connected with working line in the pressurized cylinder bottom.
7, high efficient, high pressure hand air pump as claimed in claim 5 is characterized in that, wherein low-pressure cylinder suction valve, low-pressure cylinder outlet valve, intervening valve and pressurized cylinder outlet valve all are one-way valve.
8, high efficient, high pressure hand air pump as claimed in claim 6 is characterized in that, wherein low-pressure cylinder suction valve, low-pressure cylinder outlet valve, intervening valve and pressurized cylinder outlet valve all are one-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201093959U CN201225251Y (en) | 2008-07-23 | 2008-07-23 | High-pressure high-efficiency hand pressure air pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201093959U CN201225251Y (en) | 2008-07-23 | 2008-07-23 | High-pressure high-efficiency hand pressure air pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201225251Y true CN201225251Y (en) | 2009-04-22 |
Family
ID=40598137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201093959U Expired - Lifetime CN201225251Y (en) | 2008-07-23 | 2008-07-23 | High-pressure high-efficiency hand pressure air pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201225251Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564595A (en) * | 2015-01-21 | 2015-04-29 | 周巽 | Method of mounting inflator on invalid wheelchair and method of wheel-chaired invalid performing manual inflating |
| CN106168202A (en) * | 2015-05-20 | 2016-11-30 | Ykmc有限公司 | Hydraulic double-motion hand pump |
| CN107642478A (en) * | 2016-07-22 | 2018-01-30 | 北京康斯特仪表科技股份有限公司 | A kind of cylinder body guide miniature booster-type electric air pump |
| CN108035861A (en) * | 2017-12-14 | 2018-05-15 | 潘淑斐 | A kind of Portable hitting air pump |
| WO2020000119A1 (en) * | 2018-06-25 | 2020-01-02 | 北京斯贝克科技有限责任公司 | Linkage-based dual pressurization pneumatic source |
| CN111005853A (en) * | 2019-10-22 | 2020-04-14 | 陕西创威科技有限公司 | Pedal type pressure pump and calibration method |
| US10976211B2 (en) | 2016-07-22 | 2021-04-13 | Beijing Const Instruments Technology Inc. | Fully-automated handheld pressure calibrator |
-
2008
- 2008-07-23 CN CNU2008201093959U patent/CN201225251Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564595A (en) * | 2015-01-21 | 2015-04-29 | 周巽 | Method of mounting inflator on invalid wheelchair and method of wheel-chaired invalid performing manual inflating |
| CN104564595B (en) * | 2015-01-21 | 2017-02-22 | 周巽 | Method of mounting inflator on invalid wheelchair and method of wheel-chaired invalid performing manual inflating |
| CN106168202A (en) * | 2015-05-20 | 2016-11-30 | Ykmc有限公司 | Hydraulic double-motion hand pump |
| CN107642478A (en) * | 2016-07-22 | 2018-01-30 | 北京康斯特仪表科技股份有限公司 | A kind of cylinder body guide miniature booster-type electric air pump |
| US10976211B2 (en) | 2016-07-22 | 2021-04-13 | Beijing Const Instruments Technology Inc. | Fully-automated handheld pressure calibrator |
| CN108035861A (en) * | 2017-12-14 | 2018-05-15 | 潘淑斐 | A kind of Portable hitting air pump |
| WO2020000119A1 (en) * | 2018-06-25 | 2020-01-02 | 北京斯贝克科技有限责任公司 | Linkage-based dual pressurization pneumatic source |
| CN111005853A (en) * | 2019-10-22 | 2020-04-14 | 陕西创威科技有限公司 | Pedal type pressure pump and calibration method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201225251Y (en) | High-pressure high-efficiency hand pressure air pump | |
| CN101688545A (en) | Pneumatic actuator system and method | |
| CN201475081U (en) | Oil-gas split type rapid pressurized cylinder | |
| CN106739122A (en) | The electrichydraulic control press of mechanical signal commutation | |
| CN200985919Y (en) | Hydraulic reinforcement air cylinder | |
| CN201144897Y (en) | Gas-liquid reinforcement pressure cylinder | |
| CN2660195Y (en) | Synchronous work controller of hydraulic cylinder | |
| TW200518883A (en) | Pneumatically operated screw driver | |
| CN211950766U (en) | Foot-operated pressure pump | |
| CN202441833U (en) | Double-effect double-stage gas-liquid supercharging transmission apparatus | |
| CN208252463U (en) | The pre- pressure booster of integral type | |
| CN201402218Y (en) | Pressing work test equipment for press machine | |
| CN2362688Y (en) | Cylinder boosting hydraulic cylinder | |
| CN201380582Y (en) | Oil-outlet servo control device of injection molding machine | |
| CN202520675U (en) | Double-guidance gas-liquid pressurized cylinder | |
| CN217395744U (en) | Hot press pre-compaction pressure intensifying structure | |
| CN202301235U (en) | Oil-gas separation pressure boost cylinder | |
| CN207728645U (en) | A kind of Quick-type oil gas isolation pneumohydraulic pressure-cylinder | |
| CN106968992B (en) | The two-template injection molding machine or two template press of prefill valve are set in pressurizing cylinder | |
| CN203184561U (en) | Noiseless hydraulic counterblow hammer | |
| CN2445314Y (en) | Hand piston manometer fitted with supercharger | |
| CN216382013U (en) | Pressure system of semiconductor bonding equipment | |
| CN2499823Y (en) | Hand type pressure checker mounted with pressurized | |
| CN211013486U (en) | Hydraulic continuously adjustable load device | |
| CN219242342U (en) | Single-servo-supercharging gas-liquid supercharging cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090422 |
|
| CX01 | Expiry of patent term |