CN204113800U - Novel rapid-pressurizing hydraulic cylinder - Google Patents
Novel rapid-pressurizing hydraulic cylinder Download PDFInfo
- Publication number
- CN204113800U CN204113800U CN201420551432.7U CN201420551432U CN204113800U CN 204113800 U CN204113800 U CN 204113800U CN 201420551432 U CN201420551432 U CN 201420551432U CN 204113800 U CN204113800 U CN 204113800U
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- hydraulic cylinder
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Abstract
The utility model relates to a kind of novel rapid-pressurizing hydraulic cylinder, comprise outer shell, main piston rod and sub-piston rod, main piston rod is sleeved in outer shell, is set with sub-piston rod inside it, this main piston rod is provided with main piston, and the forward and backward two ends of outer shell seal respectively installs forward and backward end socket; Described sub-piston rod is provided with sub-piston, and its rear end is provided with sub-end socket, is set with sub-capping outside sub-end socket rear end, sub-piston rod outer wall, main piston rod inwall, with sub-piston, sub-end socket form airtight sub-active chamber.This oil hydraulic cylinder is less increase piston area while increase oil hydraulic cylinder tonnage, thus reaches this oil hydraulic cylinder tonnage when identical oil hydraulic cylinder internal diameter and be greater than the supercharging object of conventional hydraulic cylinder tonnage; Less increase while increasing oil hydraulic cylinder tonnage, do not increase or reduce and the power of motor of oil hydraulic cylinder proportioning and oil pump capacity, thus to reach when same motor power and oil pump capacity this hydraulic cylinder works speed far away higher than the speedup object of conventional hydraulic cylinder.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder, particularly a kind of novel rapid-pressurizing hydraulic cylinder.
Background technique
Hydraulic energy is changed into mechanical energy, makes the hydraulic actuator of straight reciprocating motion (or oscillating motion) by oil hydraulic cylinder.The simple reliable operation of its structure, when realizing to-and-fro motion with it, can deduct speed reducer, and not have drive gap, stable movement, therefore be used widely in the hydraulic system of various machinery.The design and manufaction technique of existing conventional hydraulic cylinder is very ripe, but along with the innovating and developing of modern industrial technology, conventional hydraulic cylinder existing shortcoming when in the face of large hydraulic machinery field makes design of Hydraulic System personnel feel more helpless always.Oil hydraulic cylinder tonnage and cylinder inner carrier area proportional, piston area determines oil hydraulic cylinder tonnage, and piston area determines oil hydraulic cylinder internal diameter size equally, and therefore along with the increase of oil hydraulic cylinder tonnage, oil hydraulic cylinder internal diameter becomes a square increment with cylinder chamber volume.For fluid,matching cylinder pressure motion speed, with the oil pump capacity of large oil hydraulic cylinder matched need too by square in units of increase, in like manner, drive the power of motor amplification of oil pump to be also quite shockingly.While adding power consumption, too increase the load of electric power system like this, mechanical user cost significantly increases.Under complex working condition environment, electric power system cannot obtain effective guarantee, this just causes some Large Hydraulic Equipment and cannot normally use, if motor and oil pump do not do corresponding increase, before and after oil hydraulic cylinder, chamber turnover hydraulic flow is too small, large_sized hydraulic cylinder operating rate will be caused excessively slow, affect the working efficiency of oil hydraulic cylinder.In this case, how rational allocation motor and oil pump proportioning when increasing oil hydraulic cylinder tonnage, need not excessive increase power of motor and oil pump capacity or when power of motor oil pump capacity relatively little increment oil hydraulic cylinder gross tonnage is had increase by a relatively large margin, or the less increase piston area when increasing oil hydraulic cylinder tonnage, thus less increase cylinder diameter, be the problem demanding prompt solution of modern hydraulic systems technology.
Summary of the invention
The deficiency that the utility model exists for prior art and defect, provide a kind of while increase oil hydraulic cylinder tonnage less increase piston area, thus reach and be greater than conventional hydraulic cylinder tonnage when identical oil hydraulic cylinder internal diameter; Less increase while increasing oil hydraulic cylinder tonnage, do not increase or reduce and the power of motor of oil hydraulic cylinder proportioning and oil pump capacity, thus to reach when same motor power and oil pump capacity operating rate far away higher than the novel rapid-pressurizing hydraulic cylinder of conventional hydraulic cylinder speedup.
For achieving the above object, the technological scheme that the utility model adopts is: a kind of novel rapid-pressurizing hydraulic cylinder, comprise outer shell, main piston rod and sub-piston rod, front oil through is offered in outer shell front end, main piston rod is sleeved in outer shell, sub-piston rod is set with inside it, this main piston rod is provided with main piston, before described outer shell, before rear two ends seal installation respectively, rear head, before described, rear head and the outer inside wall of cylinder and main piston rod outer wall form closed main active chamber, before, before being respectively equipped with outside rear head, rear seal-cover, described rear head offers the topping up hole that at least one is communicated with main active chamber, described sub-piston rod is provided with sub-piston, its rear end is provided with sub-end socket, sub-capping is set with outside sub-end socket rear end, sub-piston rod outer wall, main piston rod inwall, with sub-piston, sub-end socket forms airtight sub-active chamber, piston rod head is installed in described sub-piston rod front end, its rear end passes described rear head and is sleeved in sub-active chamber turnover oil duct parts, described piston rod head is connected with described main piston rod inwall, thereafter the direction recess matched with sub-piston rod front end is offered in end face center along axis, described main piston rod rear end sidewall offers the oil inlet hole be communicated with sub-active chamber, before oil inlet hole is positioned at main piston.
In above-mentioned rapid-pressurizing hydraulic cylinder, described forward and backward closure construction is respectively the cylindrical tube shape at the band end, and this forward and backward capping barrel to be sleeved on outside outer shell and to be fixed on outer shell by screw thread, and preferably, the quantity in described topping up hole is three.
In above-mentioned rapid-pressurizing hydraulic cylinder, described front head outer surface offers the outer oil seal groove installing outer oil seal, its internal surface is offered the groove that is covered with dust, Glais ring groove, guiding trough of belt and inner oil seal groove, be covered with dust slot in described front head internal surface front end, described in be covered with dust groove, Glais ring groove, guiding trough of belt and inner oil seal groove in corresponding installation be covered with dust, Glais ring, guidance tape and inner oil seal.The quantity described front head outer surface being offered outer oil seal groove is two, and its internal surface offers three guiding troughs of belt and four inner oil seal grooves.
In above-mentioned rapid-pressurizing hydraulic cylinder, described rear head outer surface offers two in order to install the seal groove of O-ring seals.
In above-mentioned rapid-pressurizing hydraulic cylinder, pin hole is offered in described piston rod head front end, and pin hole is for installing pin.
In above-mentioned rapid-pressurizing hydraulic cylinder, described main piston outer surface offers in order to the oil seal groove of corresponding installation oil sealing, Glais ring and guidance tape, Glais ring groove and guiding trough of belt.
In above-mentioned rapid-pressurizing hydraulic cylinder, described sub-end socket outer wall offers the outer oil seal groove installing outer oil seal, its internal surface is offered to install the inner oil seal groove of inner oil seal and the guiding trough of belt for installing guidance tape, wherein, the quantity of outer oil seal groove is two, the quantity of inner oil seal groove is three, and the quantity of guiding trough of belt is two.
In above-mentioned rapid-pressurizing hydraulic cylinder, described sub-piston rod center is provided with central oil passage along axis, and this central oil passage is connected with hydraulic power unit by sub-active chamber turnover oil duct parts.
In above-mentioned rapid-pressurizing hydraulic cylinder, sub-piston is installed by screw thread in described sub-piston rod rear end, and sub-outer surface of piston offers in order to the oil seal groove of corresponding installation oil sealing, Glais ring and guidance tape, Glais ring groove and guiding trough of belt.
In above-mentioned rapid-pressurizing hydraulic cylinder, described front oil through is fixedly connected with front oil pipe, and the anterior outer wall of outer shell is fixed with cylinder sleeve.
The beneficial effects of the utility model are:
1, the utility model rapid-pressurizing hydraulic cylinder, less increase piston area while increase oil hydraulic cylinder tonnage, thus reach the utility model oil hydraulic cylinder tonnage when identical oil hydraulic cylinder internal diameter and be greater than the supercharging object of conventional hydraulic cylinder tonnage; Less increase while increasing oil hydraulic cylinder tonnage, do not increase or reduce and the power of motor of oil hydraulic cylinder proportioning and oil pump capacity, thus to reach when same motor power and oil pump capacity the utility model hydraulic cylinder works speed far away higher than the speedup object of conventional hydraulic cylinder.
2, the sub-piston rod front end of the utility model rapid-pressurizing hydraulic cylinder is provided with piston rod head, piston rod head rear end is provided with the direction recess matched in piston rod front end sub-with sub-piston, efficiently avoid the collision of sub-piston rod and piston rod head, operate steadily, bearing capacity is strong, good sealing effect, long service life.
accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram removing cylinder sleeve of the utility model rapid-pressurizing hydraulic cylinder;
Fig. 2 is the sectional structure schematic diagram of the utility model rapid-pressurizing hydraulic cylinder;
Fig. 3 is the structural representation of the cylinder sleeve of the utility model rapid-pressurizing hydraulic cylinder;
Fig. 4 is the outer shell of the utility model rapid-pressurizing hydraulic cylinder and the annexation schematic diagram of forward and backward end socket and forward and backward capping;
Fig. 5 is the outer shell of the utility model rapid-pressurizing hydraulic cylinder and the decomposition texture schematic diagram of forward and backward end socket and forward and backward capping;
Fig. 6 is the structural representation of the front head of the utility model rapid-pressurizing hydraulic cylinder;
Fig. 7 is the structural representation of the rear head cover of the utility model rapid-pressurizing hydraulic cylinder;
Fig. 8 is the ear end face structural representation of the rear head cover of the utility model rapid-pressurizing hydraulic cylinder;
Fig. 9 is the main piston of the utility model rapid-pressurizing hydraulic cylinder and the annexation schematic diagram of main piston and piston rod head;
Figure 10 is the structural representation of the sub-end socket of the utility model rapid-pressurizing hydraulic cylinder;
Figure 11 is the sub-piston of the utility model rapid-pressurizing hydraulic cylinder and the annexation schematic diagram of sub-piston rod and sub-active chamber turnover oil duct parts;
Figure 12 is the structural representation of the sub-piston of the utility model rapid-pressurizing hydraulic cylinder.
The meaning of number in the figure is: 1, outer shell, 2, main piston rod, 3, main piston, 4, front head, 5, rear head, 6, front capping, 7, rear seal-cover, 8, sub-piston rod, 9, sub-piston, 10, sub-end socket, 11, sub-capping, 12, sub-active chamber turnover oil duct parts, 13, front oil pipe, 14, cylinder sleeve, 15, main active chamber, 16, sub-active chamber, wherein, 1-1, front oilhole, 1-2, the outside thread of outer shell rear and front end, 2-1, piston rod head, 2-2, pin hole, 2-3, direction recess, 2-4, the oil inlet hole of main piston rod rear end, 3-1, oil seal groove on main piston, 3-2, Glais ring groove on main piston, 3-3, guiding trough of belt on main piston, 4-1, outer oil seal groove on front head, 4-2, the groove that is covered with dust on front head, 4-3, Glais ring groove on front head, 4-4, guiding trough of belt on Front oil seal, 4-5, inner oil seal groove on Front oil seal, 5-1, rear head is installed the seal groove of O-ring seals, 5-2, sub-piston rod through hole, 5-3, topping up hole, 6-1, internal thread in front capping, 7-1, internal thread on rear seal-cover, 8-1, central oil passage, 9-1, pin screw, 9-2, oil seal groove on sub-piston, 9-3, Glais ring groove, 9-4, guiding trough of belt.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail:
Embodiment 1: see Fig. 1 to Figure 12, a kind of novel rapid-pressurizing hydraulic cylinder, comprise outer shell 1, main piston rod 2 and sub-piston rod 8, front oil through 1-1 is offered in outer shell 1 front end, main piston rod 2 is sleeved in outer shell 1, sub-piston rod 8 is set with inside it, this main piston rod 2 is provided with main piston 3, before described outer shell 1, before rear two ends seal installation respectively, rear head 4, 5, before described, rear head 4, 5 form closed main active chamber 15 with outer shell 1 inwall and main piston rod 2 outer wall, before, rear head 4, before being respectively equipped with outside 5, rear seal-cover, before described, rear seal-cover 6, 7 for by front, rear head 4, 5 rear and front ends being pressed on outer shell 1, described rear head 5 offers the topping up hole 5-3 that at least one is communicated with main active chamber, described sub-piston rod is provided with sub-piston 9, its rear end is provided with sub-end socket 10, sub-capping 11 is set with outside sub-end socket 10 rear end, sub-end socket 10 is pressed abd fixed on sub-piston rod 8 by sub-capping 11, described sub-piston rod 8 outer wall, main piston rod 2 inwall, with sub-piston 9, sub-end socket 10 forms airtight sub-active chamber 16, piston rod head 2-1 is installed in described sub-piston rod 8 front end, its rear end passes described rear head 4 by the through hole 5-2 being opened in rear head 4 center and is sleeved in sub-active chamber turnover oil duct parts 12, described piston rod head 2-1 is connected with described main piston rod 2 inwall, thereafter the direction recess 2-3 matched with sub-piston rod 8 front end is offered in end face center along axis, described main piston rod 2 rear end sidewall offers the oil inlet hole 2-4 be communicated with sub-active chamber, before oil inlet hole 2-4 is positioned at main piston 3, preferably, the quantity of described topping up hole 5-3 is three.
In above-mentioned rapid-pressurizing hydraulic cylinder, described forward and backward capping 6,7 structure is respectively the cylindrical tube shape at the band end, and this forward and backward capping 6,7 barrel to be sleeved on outside outer shell and to be fixed on outer shell 1 by screw thread.
In above-mentioned rapid-pressurizing hydraulic cylinder, described front head 4 outer surface offers the outer oil seal groove 4-1 installing outer oil seal, its internal surface is offered the groove 4-2 that is covered with dust, Glais ring groove 4-3, guiding trough of belt 4-4 and inner oil seal groove 4-5, the groove 4-2 that is covered with dust is positioned at described front head 4 internal surface front end, described in be covered with dust groove 4-2, Glais ring groove 4-3, guiding trough of belt 4-4 and inner oil seal groove 4-5 in corresponding installation be covered with dust, Glais ring, guidance tape and inner oil seal.Wherein, the quantity described front head 4 outer surface being offered outer oil seal groove 4-1 is two, and its internal surface offers three guiding trough of belt 4-4 and four inner oil seal groove 4-5.
In above-mentioned rapid-pressurizing hydraulic cylinder, described rear head 5 outer surface offers two in order to install the seal groove 5-1 of O-ring seals.
In above-mentioned rapid-pressurizing hydraulic cylinder, pin hole 2-2 is offered in described piston rod head 2-1 front end, and pin hole 2-2 is for installing pin.
In above-mentioned rapid-pressurizing hydraulic cylinder, described main piston 3 outer surface offers oil seal groove 3-1, Glais ring groove 3-2 in order to corresponding installation oil sealing, Glais ring and guidance tape and guiding trough of belt 3-3.
In above-mentioned rapid-pressurizing hydraulic cylinder, described sub-end socket 10 outer wall offers the outer oil seal groove 10-1 installing outer oil seal, its internal surface is offered to install the inner oil seal groove 10-2 of inner oil seal and the guiding trough of belt 10-3 for installing guidance tape, wherein, the quantity of outer oil seal groove 10-1 is two, the quantity of inner oil seal groove 10-2 is three, and the quantity of guiding trough of belt 10-3 is two.
In above-mentioned rapid-pressurizing hydraulic cylinder, described sub-piston rod 8 center is provided with central oil passage 8-1 along axis, and this central oil passage 8-1 is connected with hydraulic power unit by sub-active chamber turnover oil duct parts 12.
In above-mentioned rapid-pressurizing hydraulic cylinder, sub-piston 9 is installed by screw thread in described sub-piston rod 8 rear end, sub-piston 9 outer surface offers oil seal groove 9-2, Glais ring groove 9-3 in order to corresponding installation oil sealing, Glais ring and guidance tape and guiding trough of belt 9-4, this sub-piston 9 also offers the pin screw 9-1 with its axes normal, sub-piston 9 is pressed on sub-piston rod 8 in order to install by pin screw 9-1.
In above-mentioned rapid-pressurizing hydraulic cylinder, described front oil through 1-1 is fixedly connected with front oil pipe 13, and the anterior outer wall of outer shell is fixed with cylinder sleeve 14, and cylinder sleeve 14 is the installation fitting of fixing rapid-pressurizing hydraulic cylinder.
The utility model rapid-pressurizing hydraulic cylinder forms power unit by power system by motor and oil pump, forms hydraulic control unit by electro-hydraulic reversing valve, relief valve, one-way valve, liquid-filling valve, can adopt hydraulic power system of the prior art and control system.
The working procedure of the utility model rapid-pressurizing hydraulic cylinder:
1, the quick advancement stage of oil hydraulic cylinder: after hydraulic oil flows through valve block equal pressure control unit by hydraulic-pressure pump, sub-active chamber 16 ante-chamber is entered by the central oil passage 8-1 in sub-piston rod 8, sub-piston rod 8 is fixed on cylinder tail, and sub-piston 9 is fixed on sub-piston rod 8 and cannot moves, hydraulic oil reacts on main piston rod 2 inside after entering son work ante-chamber and forms Forward pressure, promote main piston rod 2 to travel forward, meanwhile, main, active chamber back cavity forms vacuum and sucks in main active chamber back cavity by the hydraulic oil in fuel tank by the topping up hole 5-3 on the liquid-filling valve on valve block and rear head 5, and the hydraulic oil in sub-active chamber back cavity is back in fuel tank by front oil pipe 13, now rapid-pressurizing hydraulic cylinder with sub-piston rod 8 for ram reaches the object driving large_sized hydraulic cylinder rapid operation with small displacement.
2, oil hydraulic cylinder high pressure power phase: liquid-filling valve cuts out, oil pump is simultaneously to sub-active chamber ante-chamber and the oiling of main active chamber back cavity, and oil hydraulic cylinder enters full tonnage working stage, and now the gross tonnage of oil hydraulic cylinder depends on piston area on the basis that system pressure is certain.And the piston area of rapid-pressurizing hydraulic cylinder equals sub-cylinder piston area and outer shell piston area summation deducts two gall nut Gang You road areas, therefore the piston area of rapid-pressurizing hydraulic cylinder is far longer than the piston area of uniform internal diameter conventional hydraulic cylinder, therefore reaches pressurized effect.
3, oil hydraulic cylinder fallback phase: after hydraulic oil enters main work ante-chamber by front oil pipe 13, sub-active chamber 16 back cavity is entered by chamber oil inlet hole 2-4 before and after the sub-work on main piston rod 2 wall, meanwhile, son, the hydraulic oil of active chamber 16 ante-chamber is discharged outside outer shell 1 by the central oil passage 8-1 in sub-piston rod 8, and a large amount of hydraulic oil of main active chamber 15 back cavity are got rid of outside cylinder through topping up hole 5-3, complete oil hydraulic cylinder action.
Claims (10)
1. a novel rapid-pressurizing hydraulic cylinder, comprise outer shell, main piston rod and sub-piston rod, front oil through is offered in outer shell front end, it is characterized in that: main piston rod is sleeved in outer shell, sub-piston rod is set with inside it, this main piston rod is provided with main piston, the forward and backward two ends of described outer shell seal respectively installs forward and backward end socket, described forward and backward end socket and the outer inside wall of cylinder and main piston rod outer wall form closed main active chamber, be respectively equipped with forward and backward capping outside forward and backward end socket, described rear head offer the topping up hole that at least one is communicated with main active chamber, described sub-piston rod is provided with sub-piston, its rear end is provided with sub-end socket, sub-capping is set with outside sub-end socket rear end, sub-piston rod outer wall, main piston rod inwall, with sub-piston, sub-end socket forms airtight sub-active chamber, piston rod head is installed in described sub-piston rod front end, its rear end passes described rear head and is sleeved in sub-active chamber turnover oil duct parts, described piston rod head is connected with described main piston rod inwall, thereafter the direction recess matched with sub-piston rod front end is offered in end face center along axis, described main piston rod rear end sidewall offers the oil inlet hole be communicated with sub-active chamber, before oil inlet hole is positioned at main piston.
2. novel rapid-pressurizing hydraulic cylinder according to claim 1, is characterized in that: described forward and backward closure construction is respectively the cylindrical tube shape at the band end, and this forward and backward capping barrel to be sleeved on outside outer shell and to be fixed on outer shell by screw thread.
3. novel rapid-pressurizing hydraulic cylinder according to claim 1, it is characterized in that: the outer oil seal groove described front head outer surface offering to install outer oil seal, its internal surface is offered the groove that is covered with dust, Glais ring groove, guiding trough of belt and inner oil seal groove, be covered with dust slot in described front head internal surface front end, described in be covered with dust groove, Glais ring groove, guiding trough of belt and inner oil seal groove in corresponding installation be covered with dust, Glais ring, guidance tape and inner oil seal.
4. novel rapid-pressurizing hydraulic cylinder according to claim 1, is characterized in that: described rear head outer surface offers two in order to install the seal groove of O-ring seals.
5. novel rapid-pressurizing hydraulic cylinder according to claim 1, is characterized in that: pin hole is offered in described piston rod head front end.
6. novel rapid-pressurizing hydraulic cylinder according to claim 1, is characterized in that: described main piston outer surface offers in order to the oil seal groove of corresponding installation oil sealing, Glais ring and guidance tape, Glais ring groove and guiding trough of belt.
7. novel rapid-pressurizing hydraulic cylinder according to claim 1, is characterized in that: described sub-piston rod center is provided with central oil passage along axis, and this central oil passage is connected with hydraulic power unit by sub-active chamber turnover oil duct parts.
8. the novel rapid-pressurizing hydraulic cylinder according to claim 1 or 7, it is characterized in that: sub-piston is installed by screw thread in described sub-piston rod rear end, sub-outer surface of piston offers in order to the oil seal groove of corresponding installation oil sealing, Glais ring and guidance tape, Glais ring groove and guiding trough of belt.
9. novel rapid-pressurizing hydraulic cylinder according to claim 1, is characterized in that: described front oil through is fixedly connected with front oil pipe, and the anterior outer wall of outer shell is fixed with cylinder sleeve.
10. novel rapid-pressurizing hydraulic cylinder according to claim 1, it is characterized in that: the outer oil seal groove described sub-end socket outer wall being offered to install outer oil seal, its internal surface is offered to install the inner oil seal groove of inner oil seal and the guiding trough of belt for installing guidance tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420551432.7U CN204113800U (en) | 2014-09-24 | 2014-09-24 | Novel rapid-pressurizing hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420551432.7U CN204113800U (en) | 2014-09-24 | 2014-09-24 | Novel rapid-pressurizing hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113800U true CN204113800U (en) | 2015-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420551432.7U Withdrawn - After Issue CN204113800U (en) | 2014-09-24 | 2014-09-24 | Novel rapid-pressurizing hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204113800U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196818A (en) * | 2014-09-24 | 2014-12-10 | 郑州协力建工设备有限公司 | Novel quick-pressurizing hydraulic cylinder |
| CN108331800A (en) * | 2018-04-13 | 2018-07-27 | 天津熙盛科技发展有限公司 | Hermetically sealed no piston pressure cylinder and application method |
-
2014
- 2014-09-24 CN CN201420551432.7U patent/CN204113800U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196818A (en) * | 2014-09-24 | 2014-12-10 | 郑州协力建工设备有限公司 | Novel quick-pressurizing hydraulic cylinder |
| CN108331800A (en) * | 2018-04-13 | 2018-07-27 | 天津熙盛科技发展有限公司 | Hermetically sealed no piston pressure cylinder and application method |
| CN108331800B (en) * | 2018-04-13 | 2023-12-26 | 汉德森环保科技发展(天津)有限公司 | Full-sealing piston-free pressure cylinder and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150121 Effective date of abandoning: 20160406 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |