CN204592328U - The micro-pump control valve that blocks water of a kind of swash plate - Google Patents
The micro-pump control valve that blocks water of a kind of swash plate Download PDFInfo
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- CN204592328U CN204592328U CN201520189344.1U CN201520189344U CN204592328U CN 204592328 U CN204592328 U CN 204592328U CN 201520189344 U CN201520189344 U CN 201520189344U CN 204592328 U CN204592328 U CN 204592328U
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Abstract
The utility model relates to the micro-pump control valve that blocks water of a kind of swash plate, comprise valve body, ramp type flap, valve seat and the valve rod be arranged in valve channel, described flap is connected with valve body by valve rod, described control valve for water pump also comprises oil control device and air-control device, described oil control device is connected with valve body by fore poppet, described air-control device is connected with valve body by back poppet, and described valve rod is connected with fore poppet by front valve rod end, and is connected with back poppet by rear valve rod end.Compared with prior art, the utility model has that structure is simple, cost is low, resistance is low, Security is high, quick closedown, power failure quick closing valve, the advantage such as applied widely.
Description
Technical field
The utility model relates to a kind of control valve for water pump, especially relates to the micro-pump control valve that blocks water of a kind of swash plate.
Background technique
In water system, in order to ensure the normal operation of water pump, prevent turn on pump water hammer or the too high tripping operation of current of electric and pump-stopping water hammer, the outlet pipe of water pump is equiped with control valve for water pump usually, slow when its requirement can realize turn on pump is opened, slow pass after first quick closing valve during termination of pumping, and when encountering emergency power shutoff, ground, pass automatic-closing valve can be delayed to prevent from flowing backwards after first quick closing valve, what control for water pump in the market has cut-off type control valve for water pump (multifunctional water pump control valve), revolve and open type Double-clack water conservancy control type control valve for water pump, type hydraulic actuator butterfly valve (hydraulic butterfly valve), its aperture of first two control valve for water pump affects by water velocity, resistance coefficient is larger, damage by water is high, the space of large diameter valve occupation of land is simultaneously huge, manufacture, install very difficult, and it is low to control reliability.Type hydraulic actuator butterfly valve (hydraulic butterfly valve) though to improve to some extent but complex structure, cost are high on function controls, and domestic hydraulic station reliability is poor simultaneously, rate of fault is high, debug maintenance difficult.
Chinese patent CN1598371A discloses a kind of ramp type translation butterfly valve, by drive unit, support, valve body, butterfly plate, seal ring, pressing plate, bearing, filler, Gland, upper valve shaft, lower valve shaft, axle sleeve, pad, alignment pin, nut, the part compositions such as end cap, it is characterized in that: the tilting several angle of butterfly plate is contained in valve body, the axle bed of butterfly plate is U-groove bevel, the end mill that upper valve shaft and lower valve shaft stretch into axle bed becomes plane, and be milled with skewed slot, butterfly plate and upper valve shaft, lower valve shaft is connected by threaded alignment pin, but this valve in use, cannot quick closing valve, most critical is the automatic-closing valve that this valve cannot be safe when emergency power shutoff, this can cause system decompression and water pump reversing motor to burn out, produce serious security incident, this valve controls so can not be used for water pump.
Model utility content
The purpose of this utility model be exactly provide that a kind of structure is simple, cost is low, resistance is low, Security is high to overcome defect that above-mentioned prior art exists, quick closedown, power failure quick closing valve, the micro-pump control valve that blocks water of swash plate applied widely.
The purpose of this utility model can be achieved through the following technical solutions:
The micro-pump control valve that blocks water of a kind of swash plate, comprise valve body, ramp type flap, valve seat and the valve rod be arranged in valve channel, described flap is connected with valve body by valve rod, described control valve for water pump also comprises oil control device and air-control device, described oil control device is connected with valve body by fore poppet, described air-control device is connected with valve body by back poppet, and described valve rod is connected with fore poppet by front valve rod end, and is connected with back poppet by rear valve rod end.
Described oil control device comprises interconnective cylinder component and oil pressure assembly, described cylinder component comprises the oil cylinder, cylinder piston rod, U-shaped slideway and the adjustment screw rod that connect successively, described oil cylinder and fore poppet hinged, described oil cylinder comprises the rod chamber and rodless cavity that are connected with oil pressure assembly respectively, and described U-shaped slideway is connected with front valve rod end by front swing arm.
The described accumulation of energy oil storage tank that oil pressure assembly comprises with oil cylinder connects, the proximity switch, the position limit switch that be arranged on shake-up sheet front swing arm on and with shake-up sheet be oppositely arranged that arrange corresponding to adjustment screw rod, described proximity switch and position limit switch are separately fixed on fore poppet, and described accumulation of energy oil storage tank is fixed on valve body.
Side hydraulic fluid port on described accumulation of energy oil storage tank sidewall is by being connected with the rod chamber filler opening of rod chamber the first connecting tube, and by being connected with the rod chamber oil outlet of rod chamber the second connecting tube, the described end hydraulic fluid port at the bottom of accumulation of energy oil tank is connected with the rodless cavity filler opening of rodless cavity by third connecting pipe.
The first described connecting tube is provided with the first one-way throttle valve, and the second described connecting tube is provided with oil cylinder reset solenoid valve, and described third connecting pipe is provided with the second one-way throttle valve.
Described accumulation of energy oil storage tank is also provided with pressure gauge, gas injection source is blocked up and filling oil plug.
The solenoid directional control valve that described air-control device comprises the cylinder hinged with back poppet, cylinder piston rod, rear-swing arm and is fixed on valve body, described solenoid directional control valve, cylinder, cylinder piston rod, rear-swing arm are connected successively with rear valve rod end, and described solenoid directional control valve is connected respectively by the upper gas port of tracheae and cylinder and lower gas port.
Described solenoid directional control valve is provided with steam-water separator.
Described front swing arm one end is provided with roller, and the other end is connected with front valve rod end, and described front swing arm to be rolled with the chute on U-shaped slideway by roller and is connected.
Described accumulation of energy oil storage tank inside is marked with pressurized air and hydraulic oil.
Compared with prior art, the utility model has the following advantages:
One, structure is simple, cost is low: the utility model ramp type water hammer-resistant control valve for water pump is simple and reasonable, low cost of manufacture, and main valve boundary dimension is little, floor space is little, is convenient to assembling and maintenance.
Two, resistance is low, Security is high: the design that the utility model adopts oily Ore-controlling Role and pneumatic control system to combine, oil cylinder plays and makes that flap is slow to be opened, the effect of slow pass, cylinder play even if flap also can be opened completely when flow velocity is very low and at emergency power shutoff time quick closedown effect, make it can according to starting mode of pump requirement, automatically realize the controllable slow process opened to standard-sized sheet, avoid producing valve opening water hammer, motor trips, equally, when termination of pumping, also can according to the flow condition of medium automatically realize quick closing valve ease up close two-stage closing process, avoid occurring pump-stopping water hammer phenomenon, water pump can be protected well, the safety of motor and pipeline.
Three, quick closedown: cylinder piston rod upper end is provided with closed U-shaped slideway, slideway top is provided with adjustment screw rod, the front swing arm driving flap to rotate is combined in closed U-shaped slideway by roller housing, its act on mainly quick closing valve time front swing arm can break away from cylinder damping, in addition, the relative movement of front swing arm and closed U-shaped slideway is not sliding friction, but rolling friction, therefore friction factor is very little, the resistance to motion of quick closing valve reduces greatly, simultaneously under the quick power-assisted of cylinder is closed, quick closing's time shortens greatly, makes the time of quick closedown be less than or equal to 0.5 second.
Four, slowly closing: closing at a slow speed of this valve is controlled by oil cylinder throttle, reliable and stable.
Five, power failure quick closing valve: owing to carrying out pump valve interlock, during emergency power shutoff, source of the gas is under the pressure of gas holder effect, make the air-flow of cylinder reverse after solenoid directional control valve dead electricity instantaneously, drive cylinder piston rod moves upward, make and close valve events fast, simultaneously because the damping function of oil cylinder to make after valve rapid-closing slowly closing again, prevent from flowing backwards and ensure that the safety of pump motor.
Six, applied widely: the utility model is provided with adjustment screw rod on U-shaped slideway, different operating mode can be met to the requirement of closing Valve travel fast.
Accompanying drawing explanation
Fig. 1 is the utility model control valve for water pump closed positions structural front view.
Fig. 2 is the utility model control valve for water pump closed positions structure dorsal view.
Fig. 3 is the utility model control valve for water pump closed positions structure sectional view.
Fig. 4 is that the utility model control valve for water pump delays open procedure principle schematic, wherein, figure (4a) is oil control schematic diagram of device in slow open procedure, and figure (4b) is air-control device schematic diagram in slow open procedure, and figure (4c) is flap motion schematic diagram in slow open procedure.
Fig. 5 is that the utility model control valve for water pump speed closes Principle of Process schematic diagram, wherein, figure (5a) is oil control schematic diagram of device in the process of power-off speed pass, figure (5b) is air-control device schematic diagram in the process of power-off speed pass, and figure (5c) is flap motion schematic diagram in the process of power-off speed pass.
Fig. 6 is the utility model control valve for water pump slow pass Principle of Process schematic diagram, wherein, figure (6a) is oil control schematic diagram of device in the process of slow pass, and figure (6b) is air-control device schematic diagram in the process of slow pass, and figure (6c) is flap motion schematic diagram in the process of slow pass.
Fig. 7 is that the utility model control valve for water pump automatically resets Principle of Process schematic diagram, wherein, figure (7a) is oil control schematic diagram of device in the process of automatically reseting, figure (7b) is air-control device schematic diagram in the process of automatically reseting, and figure (7c) is flap motion schematic diagram in the process of automatically reseting.
Wherein, 1, valve body, 2, flap, 3, valve rod, 31, front valve rod end, 32, rear valve rod end, 4, fore poppet, 5, back poppet, 6, front swing arm, 7, rear-swing arm, 8, oil cylinder, 81, rod chamber filler opening, 82, rod chamber oil outlet, 83, rodless cavity filler opening, 9, cylinder piston rod, 10, accumulation of energy oil storage tank, 11, first one-way throttle valve, 12, second one-way throttle valve, 13, oil cylinder reset solenoid valve, 14, position limit switch, 15, proximity switch, 16, cylinder, 161, upper gas port, 162, lower gas port, 17, cylinder piston rod, 18, solenoid directional control valve, 19, steam-water separator, 20, U-shaped slideway, 21, adjustment screw rod, 22, gas injection source is blocked up, 23, filling oil plug, 24, pressure gauge, 25, first connecting tube, 26, second connecting tube, 27, third connecting pipe, 28, touch sheet, 29, valve seat.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment:
As Figure 1-3, the micro-pump control valve that blocks water of a kind of swash plate, comprise valve body 1, be arranged on the ramp type flap 2 in valve body 1 passage, valve seat 29 and valve rod 3, flap 2 is connected with valve body 1 by valve rod 3, control valve for water pump also comprises oil control device and air-control device, oil control device is connected with valve body 1 by fore poppet 4, air-control device is connected with valve body 1 by back poppet 5, valve rod 3 is connected with fore poppet 4 by front valve rod end 31, and be connected with back poppet 5 by rear valve rod end 32, flap 2 is eccentric ramp type, be fixed on valve rod 3 neutral position, rotate around valve rod 3 during keying, valve seat 29 is placed in valve body 1, with flap 2 sealing surface fitted seal, valve rod 3 adopts bearing type, through in the front and back axis hole of valve body 1, fore poppet 4 is fixed on the front-axle hole end face of valve body 1, back poppet 5 is fixed on the rear axle hole end surface of valve body 1.
Oil control device comprises interconnective cylinder component and oil pressure assembly, cylinder component comprises the oil cylinder 8, cylinder piston rod 9, U-shaped slideway 20 and the adjustment screw rod 21 that connect successively, oil cylinder 8 is hinged with fore poppet 4, oil cylinder 8 comprises the rod chamber and rodless cavity that are connected with oil pressure assembly respectively, U-shaped slideway 20 is connected with front valve rod end 31 by front swing arm 6, front swing arm 6 one end is provided with roller, and the other end is connected with front valve rod end 31, and front swing arm 6 to be rolled with the chute on U-shaped slideway 20 by roller and is connected.
Oil pressure assembly comprises and the accumulation of energy oil storage tank 10 that oil cylinder 8 connects, the proximity switch 15, the position limit switch 14 that be arranged on shake-up sheet 28 front swing arm 6 on and with shake-up sheet 28 be oppositely arranged that arrange corresponding to adjustment screw rod 21, proximity switch 15 and position limit switch 14 are separately fixed on fore poppet 4, and accumulation of energy oil storage tank 10 is fixed on valve body.
Side hydraulic fluid port on accumulation of energy oil storage tank 10 sidewall was connected with the rod chamber filler opening 81 of rod chamber by the first connecting tube 25, and be connected with the rod chamber oil outlet 82 of rod chamber by the second connecting tube 26, end hydraulic fluid port at the bottom of accumulation of energy oil storage tank 10 tank is connected with the rodless cavity filler opening 83 of rodless cavity by third connecting pipe 27, accumulation of energy oil storage tank 10 inside is marked with pressurized air and hydraulic oil, accumulation of energy oil storage tank 10 is also provided with pressure gauge 24, gas injection source stifled 22 and filling oil plug 23, in tank, a certain amount of hydraulic oil is injected by filling oil plug 23, the pressurized air that 22 inject certain pressure in tank is blocked up by gas injection source.
First connecting tube 25 was provided with the first one-way throttle valve 11, second connecting tube 26 was provided with oil cylinder reset solenoid valve 13, third connecting pipe 27 is provided with the second one-way throttle valve 12, the direction of the first one-way throttle valve 11 and the second one-way throttle valve 12 arranges to oil cylinder 8 oil-feed to be not throttling, to be throttling from oil cylinder 8 to accumulation of energy oil storage tank 10 oil extraction.
The solenoid directional control valve 18 that air-control device comprises the cylinder 16 hinged with back poppet 5, cylinder piston rod 17, rear-swing arm 7 and is fixed on valve body, solenoid directional control valve 18, cylinder 16, cylinder piston rod 17, rear-swing arm 7 are connected successively with rear valve rod end 32, solenoid directional control valve 18 is connected respectively by the upper gas port 161 of tracheae and cylinder 16 and lower gas port 162, and solenoid directional control valve 18 is provided with steam-water separator 19.
The working principle of the design is as follows:
Fig. 1-Fig. 3 is valve closed positions, now cylinder piston rod 9 is in complete elongation state, front swing arm 6 one end and U-shaped slideway 20 bottom connection touch, touch sheet 28 and just in time touch position limit switch 14, the energising of oil cylinder reset solenoid valve 13 is opened, pressure oil in accumulation of energy oil storage tank 10 is by the first connecting tube 25, second connecting tube 26, third connecting pipe 27 is simultaneously to oil cylinder 8 injection pressure oil, due to the difference in areas of rod chamber and rodless cavity, cylinder piston rod 9 pairs of front swing arms 6 are made to remain thrust upwards, and cylinder piston rod 17 is in complete contraction state, because gas port on cylinder 161 is in inflated condition, cylinder piston rod 17 pairs of rear-swing arms 7 are made to remain downward pulling force, a combination of drawing is pushed away like this by one, flap 2 is reliably closed.
As shown in Figure 4, wherein, figure (4a) is oil control schematic diagram of device in slow open procedure, figure (4b) is air-control device schematic diagram in slow open procedure, figure (4c) is flap motion schematic diagram in slow open procedure, when starting mode of pump, pass through delays time to control, reach after rated speed until water pump, solenoid directional control valve 18 is energized and commutates, pressurized air injects the lower gas port 162 of cylinder 16 through solenoid directional control valve 18 by steam-water separator 19, and be vented by gas port on cylinder 161, cylinder piston rod 17 pairs of rear-swing arms 7 become thrust from pulling force, cylinder piston rod 17 promotes rear-swing arm 7 and does valve opening action, and cylinder piston rod 9 pairs of front swing arms 6 remain constant to lifting force.Because cylinder piston rod 17 thrust is greater than the resistance of oil cylinder 8 and flap 2, but the damping being subject to oil cylinder 8 pins down, make front swing arm 6 promote cylinder piston rod 9 can only slowly move downward, and then drive flap 2 slowly to open, touch sheet 28 and depart from position limit switch 14 contact, the power-off of oil cylinder reset solenoid valve 13 is closed, and disconnects the second connecting tube 26 and being communicated with the rod chamber of oil cylinder 8, regulate the second one-way throttle valve 12 can set the opening speed of flap 2.In the process, due to the power-assist thrust of cylinder piston rod 17, cylinder piston rod 9 works under the state of micro-resistance, even if velocity of medium is close to zero, flap 2 still can be opened smoothly completely, and damage by water drops to minimum, reaches energy-conservation effect.
As shown in Figure 5, wherein, figure (5a) is oil control schematic diagram of device in the process of power-off speed pass, figure (5b) is air-control device schematic diagram in the process of power-off speed pass, figure (5c) is flap motion schematic diagram in the process of power-off speed pass, the stroke of quick closing valve is 70%-85%, when the unexpected power-off termination of pumping of water pump, the power-off of solenoid directional control valve 18 Received signal strength commutates, pressurized air injects the upper gas port 161 of cylinder 16 through solenoid directional control valve 18 by steam-water separator 19, be vented by the lower gas port 162 of cylinder 16, cylinder piston rod 17 pairs of rear-swing arms 7 become pulling force instantaneously by thrust, flap 2 is under the effect of cylinder pulling force and medium back flow, by fast automatic closedown, but U-shaped slideway 20 stroke on cylinder piston rod 9 top limits being rotated further of front swing arm 6, flap 2 can not be closed immediately completely.Now, the rodless cavity oil-feed of oil cylinder 8, rod chamber throttling oil extraction, cylinder piston rod 9 drives front swing arm 6 to make flap 2 continue slowly closing.After flap 2 is closed completely, as shown in Figure 6, wherein, figure (6a) is oil control schematic diagram of device in the process of slow pass, figure (6b) is air-control device schematic diagram in the process of slow pass, figure (6c) is flap motion schematic diagram in the process of slow pass, the slow stroke closed is 15%-30%, touch sheet 28 and touch position limit switch 14, the energising of oil cylinder reset solenoid valve 13 is opened, second connecting tube 26 was communicated with the rod chamber of oil cylinder 8, the a large amount of oil extraction of rod chamber, cylinder piston rod 9 upwards Rapid reset, as shown in Figure 7, wherein, figure (7a) is oil control schematic diagram of device in the process of automatically reseting, figure (7b) is air-control device schematic diagram in the process of automatically reseting, figure (7c) is flap motion schematic diagram in the process of automatically reseting, proximity switch 15 transmits reset signal to central control chamber.In this process, regulate the height of adjustment screw rod 21 can set the stroke of flap 2 quick closedown, regulate one-way throttle valve 11 can set the slow speed of closing of flap 2.Quick closing valve and the slow two-stage closing process closed, avoid and eliminate water hammer, playing the effect of protection pipe network.
Claims (10)
1. the micro-pump control valve that blocks water of swash plate, comprise valve body (1), be arranged on the ramp type flap (2) in valve body (1) passage, valve seat (29) and valve rod (3), described flap (2) is connected with valve body (1) by valve rod (3), it is characterized in that, described control valve for water pump also comprises oil control device and air-control device, described oil control device is connected with valve body (1) by fore poppet (4), described air-control device is connected with valve body (1) by back poppet (5), described valve rod (3) is connected with fore poppet (4) by front valve rod end (31), and be connected with back poppet (5) by rear valve rod end (32).
2. the micro-pump control valve that blocks water of a kind of swash plate according to claim 1, it is characterized in that, described oil control device comprises interconnective cylinder component and oil pressure assembly, described cylinder component comprises the oil cylinder (8) connected successively, cylinder piston rod (9), U-shaped slideway (20) and adjustment screw rod (21), described oil cylinder (8) is hinged with fore poppet (4), described oil cylinder (8) comprises the rod chamber and rodless cavity that are connected with oil pressure assembly respectively, described U-shaped slideway (20) is connected with front valve rod end (31) by front swing arm (6).
3. the micro-pump control valve that blocks water of a kind of swash plate according to claim 2, it is characterized in that, described oil pressure assembly comprises the accumulation of energy oil storage tank (10) be connected with oil cylinder (8), with adjustment screw rod (21) the corresponding proximity switch (15) arranged, the position limit switch (14) being arranged on the shake-up sheet (28) on front swing arm (6) and being oppositely arranged with shake-up sheet (28), described proximity switch (15) and position limit switch (14) are separately fixed on fore poppet (4), described accumulation of energy oil storage tank (10) is fixed on valve body.
4. the micro-pump control valve that blocks water of a kind of swash plate according to claim 3, it is characterized in that, side hydraulic fluid port on described accumulation of energy oil storage tank (10) sidewall is by being connected with the rod chamber filler opening (81) of rod chamber the first connecting tube (25), and by being connected with the rod chamber oil outlet (82) of rod chamber the second connecting tube (26), the described end hydraulic fluid port at the bottom of accumulation of energy oil storage tank (10) tank is connected with the rodless cavity filler opening (83) of rodless cavity by third connecting pipe (27).
5. the micro-pump control valve that blocks water of a kind of swash plate according to claim 4, it is characterized in that, described the first connecting tube (25) is provided with the first one-way throttle valve (11), described the second connecting tube (26) is provided with oil cylinder reset solenoid valve (13), and described third connecting pipe (27) is provided with the second one-way throttle valve (12).
6. the micro-pump control valve that blocks water of a kind of swash plate according to claim 3, is characterized in that, described accumulation of energy oil storage tank (10) is also provided with pressure gauge (24), gas injection source stifled (22) and filling oil plug (23).
7. the micro-pump control valve that blocks water of a kind of swash plate according to claim 1, it is characterized in that, described air-control device comprises the cylinder (16) hinged with back poppet (5), cylinder piston rod (17), rear-swing arm (7) and the solenoid directional control valve (18) be fixed on valve body, described solenoid directional control valve (18), cylinder (16), cylinder piston rod (17), rear-swing arm (7) is connected successively with rear valve rod end (32), described solenoid directional control valve (18) is connected respectively by the upper gas port (161) of tracheae and cylinder (16) and lower gas port (162).
8. the micro-pump control valve that blocks water of a kind of swash plate according to claim 7, is characterized in that, described solenoid directional control valve (18) is provided with steam-water separator (19).
9. the micro-pump control valve that blocks water of a kind of swash plate according to claim 2, it is characterized in that, described front swing arm (6) one end is provided with roller, the other end is connected with front valve rod end (31), and described front swing arm (6) to be rolled with the chute on U-shaped slideway (20) by roller and is connected.
10. the micro-pump control valve that blocks water of a kind of swash plate according to claim 3, is characterized in that, described accumulation of energy oil storage tank (10) inside is marked with pressurized air and hydraulic oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520189344.1U CN204592328U (en) | 2015-03-31 | 2015-03-31 | The micro-pump control valve that blocks water of a kind of swash plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520189344.1U CN204592328U (en) | 2015-03-31 | 2015-03-31 | The micro-pump control valve that blocks water of a kind of swash plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832659A (en) * | 2015-03-31 | 2015-08-12 | 上海冠龙阀门机械有限公司 | Inclined plate micro-resisting water pump control valve |
| CN105443345A (en) * | 2016-01-08 | 2016-03-30 | 洪子云 | Double mud pump structure of rotating pump hole-forming pile machine |
| CN105508690A (en) * | 2016-01-18 | 2016-04-20 | 株洲南方阀门股份有限公司 | Valve-closure drive device and emergency burst pipe cut-off valve thereof |
-
2015
- 2015-03-31 CN CN201520189344.1U patent/CN204592328U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832659A (en) * | 2015-03-31 | 2015-08-12 | 上海冠龙阀门机械有限公司 | Inclined plate micro-resisting water pump control valve |
| CN104832659B (en) * | 2015-03-31 | 2017-06-23 | 上海冠龙阀门机械有限公司 | A kind of micro- pump control valve that blocks water of swash plate |
| CN105443345A (en) * | 2016-01-08 | 2016-03-30 | 洪子云 | Double mud pump structure of rotating pump hole-forming pile machine |
| CN105508690A (en) * | 2016-01-18 | 2016-04-20 | 株洲南方阀门股份有限公司 | Valve-closure drive device and emergency burst pipe cut-off valve thereof |
| CN105508690B (en) * | 2016-01-18 | 2018-10-30 | 株洲南方阀门股份有限公司 | A kind of pass valve drive and its booster quick action emergency valve |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 815, de Garden Road, Nanxiang Town, Jiading District, Shanghai Co-patentee after: Shanghai Guanlong Valve Automation Co. Ltd. Patentee after: Guanlong Valve Machinery Co., Ltd., Shanghai Address before: No. 815, de Garden Road, Nanxiang Town, Jiading District, Shanghai Co-patentee before: Shanghai Qirong Machinery Automatic Control Co.,Ltd. Patentee before: Guanlong Valve Machinery Co., Ltd., Shanghai |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Tak Road 201802 Shanghai city Jiading District Nanxiang Town, No. 815 Co-patentee after: SHANGHAI GUANLONG VALVE AUTOMATION Co.,Ltd. Patentee after: Shanghai Guanlong Valve Machinery Co., Ltd Address before: Tak Road 201802 Shanghai city Jiading District Nanxiang Town, No. 815 Co-patentee before: SHANGHAI GUANLONG VALVE AUTOMATION Co.,Ltd. Patentee before: Shanghai Guanlong Valve Machinery Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Tak Road 201802 Shanghai city Jiading District Nanxiang Town, No. 815 Patentee after: Shanghai Guanlong valve energy saving equipment Co., Ltd Patentee after: SHANGHAI GUANLONG VALVE AUTOMATION Co.,Ltd. Address before: Tak Road 201802 Shanghai city Jiading District Nanxiang Town, No. 815 Patentee before: Shanghai Guanlong Valve Machinery Co., Ltd Patentee before: SHANGHAI GUANLONG VALVE AUTOMATION Co.,Ltd. |