CN210660802U - Hydraulic control system of coke guide - Google Patents
Hydraulic control system of coke guide Download PDFInfo
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- CN210660802U CN210660802U CN201921625875.5U CN201921625875U CN210660802U CN 210660802 U CN210660802 U CN 210660802U CN 201921625875 U CN201921625875 U CN 201921625875U CN 210660802 U CN210660802 U CN 210660802U
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- 239000000571 coke Substances 0.000 title claims description 51
- 238000004891 communication Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 102
- 239000010720 hydraulic oil Substances 0.000 description 12
- 238000012423 maintenance Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
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Abstract
The utility model provides a block burnt machine hydraulic control system, it including: the first check valve, the first valve subassembly, the second check valve, first pilot-operated check valve and first relief valve. The oil inlet of the first check valve is used for being connected with an external oil supply system. The first valve assembly includes a first directional valve and a first pilot valve. The first directional valve is a two-position three-way valve, a port P of the first directional valve is communicated with an oil outlet of the first one-way valve, a port A of the first directional valve is communicated with a pilot port of the first pilot valve, and a port T of the first directional valve is communicated with an oil tank for oil discharge. The first pilot valve is a two-position four-way valve, a P port of the first pilot valve is communicated with an oil outlet of the first one-way valve, and a T port of the first pilot valve is communicated with an oil tank for discharging oil. The first valve assembly includes a second directional valve and a second pilot valve. The second valve assembly is identical in structure to the first valve assembly. The system has better safety and reliability.
Description
Technical Field
The utility model relates to a block burnt machine hydraulic control system.
Background
The coke guide is one of the main equipments in coke oven machinery, and is a coke oven machinery for guiding the red hot coke pushed out from the coking chamber into the coke quenching car, and is composed of steel frame body, running gear, coke guide, door-taking device, door-cleaning device and head-tail coke treatment device.
In the working process of the coke guide, a plurality of control mechanisms and actuating mechanisms are required to cooperate together for completion, wherein a hydraulic system of the coke guide plays an important role and provides power for each actuating action. The coke temperature is 1000 ℃ when being pushed out, and the coke oven cannot be flamed out and shut down all the year round in the production process, so that very high requirements on safety and reliability are provided. The safety and reliability of the hydraulic control system of the currently common coke guide are poor, once a certain hydraulic element fails, the shutdown maintenance is caused, and the production efficiency is greatly influenced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a higher coke guide hydraulic control system of security and reliability in order to overcome the defect that coke guide hydraulic control system security and reliability are poor among the prior art.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
a hydraulic control system of a coke guide is characterized by comprising:
the oil inlet of the first one-way valve is used for connecting an external oil supply system;
the first valve assembly comprises a first directional valve and a first pilot valve, the first directional valve is a two-position three-way valve, the first directional valve is provided with a P port, a T port and an A port, the P port of the first directional valve is communicated with an oil outlet of the first one-way valve, the A port of the first directional valve is communicated with a pilot port of the first pilot valve, and the T port of the first directional valve is communicated with an oil tank for unloading oil; when the first directional valve is positioned at a first position, the P port of the first directional valve is disconnected, and the T port of the first directional valve is communicated with the A port; when the first directional valve is located at the second position, the T port of the first directional valve is disconnected, and the P port of the first directional valve is communicated with the A port;
the first pilot valve is a two-position four-way valve and is provided with a port P, a port T, a port A and a port B, the port P of the first pilot valve is communicated with an oil outlet of the first one-way valve, and the port T of the first pilot valve is communicated with an oil tank for oil discharge; when the pilot port of the first pilot valve is not communicated, the port P of the first pilot valve is communicated with the port A, and the port T of the first pilot valve is communicated with the port B; when the pilot port of the first pilot valve is communicated, the port P of the first pilot valve is communicated with the port B, and the port T of the first pilot valve is communicated with the port A;
the first valve component comprises a first directional valve and a first pilot valve, the first valve component and the first valve component are identical in structure, a port B of the first pilot valve is communicated with a port P of the first directional valve and a port P of the first pilot valve respectively, a port T of the first directional valve and a port T of the first pilot valve are communicated with an oil tank for unloading oil, a port A of the first pilot valve is communicated with the same end of the hydraulic cylinder through a first hydraulic control one-way valve and a port A of the first pilot valve, a port B of the first pilot valve is communicated with the other end of the hydraulic cylinder, and a hydraulic control port of the first hydraulic control one-way valve is communicated with an oil path between the port B of the first pilot valve and the hydraulic cylinder;
and the first reducing valve is positioned on an oil path between the oil outlet of the first one-way valve and the P port of the first directional valve and the P port of the first pilot valve.
Preferably, the hydraulic control system of the coke guide further comprises an energy accumulator, and the energy accumulator is communicated with an oil outlet of the first one-way valve and an oil inlet of the first pressure reducing valve.
Preferably, the hydraulic control system of the coke guide further comprises a second pressure reducing valve, an oil inlet of the second pressure reducing valve is communicated with the energy accumulator, an oil outlet of the second pressure reducing valve is communicated with an oil tank for discharging oil, and the set oil pressure of the second pressure reducing valve is greater than the set oil pressure of the first pressure reducing valve.
Preferably, two ends of the second pressure reducing valve are connected in parallel with a manual unloading valve, and the initial state of the manual unloading valve is a closed state.
Preferably, the hydraulic control system of the coke guide further comprises a first stop valve, and the first stop valve is located on an oil path between the first one-way valve and the accumulator, between the manual unloading valve and the second reducing valve.
Preferably, the hydraulic control system of the coke guide further includes a first one-way throttle valve and a second one-way throttle valve, the first one-way throttle valve is located on an oil path between the port a of the second pilot valve and the first hydraulic control one-way valve, the second one-way throttle valve is located on an oil path between the port B of the second pilot valve and the hydraulic cylinder, and one-way oil outlets of the first one-way throttle valve and the second one-way throttle valve are both connected to the second pilot valve.
Preferably, the hydraulic control system of the coke guide further comprises a second stop valve, and the second stop valve is located on an oil path between the second one-way throttle valve and the hydraulic cylinder.
Preferably, the hydraulic control system of the coke guide further comprises a third stop valve, one end of the third stop valve is communicated with the hydraulic cylinder, and the other end of the third stop valve is connected with the oil outlets of the second check valve and the first hydraulic control check valve.
Preferably, the hydraulic control system of the coke guide further comprises a second hydraulic one-way valve, and the second hydraulic one-way valve is located on an oil path between the third stop valve and the hydraulic cylinder.
Preferably, the hydraulic control system of the coke guide further comprises a third check valve, an oil outlet of the third check valve is communicated with an oil outlet of the second hydraulic control check valve, and an oil inlet of the third check valve is a spare oil port.
Preferably, the hydraulic control system of the coke guide further comprises a check valve, two ends of the check valve are respectively connected to two ends of the hydraulic cylinder, and the initial state of the check valve is a closed state.
On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.
The utility model discloses an actively advance the effect and lie in: by utilizing the structure that the first valve component and the second valve component are combined, a plurality of mutually independent oil paths are formed between the first one-way valve and the hydraulic cylinder, so that the hydraulic control system of the coke guide can work normally under the condition that one oil path has a fault, and the safety and the reliability of the system are improved.
Drawings
Fig. 1 is a hydraulic schematic diagram of a hydraulic control system of a coke guide in a preferred embodiment of the present invention.
Description of reference numerals:
First directional valve 210
Second directional valve 310
First pilot operated check valve 420
First pressure reducing valve 430
Second pressure reducing valve 520
First one-way throttle valve 610
Second one-way throttle valve 620
Second hydraulic control one-way valve 650
Oil discharge check valve 680
Detailed Description
The present invention will be more clearly and completely described below with reference to the accompanying drawings.
Fig. 1 shows a hydraulic control system of a coke guide, which comprises: a first check valve 100, a first valve assembly 200, a second valve assembly 300, a second check valve 410, a first pilot operated check valve 420, and a first pressure relief valve 430. The oil inlet of the first check valve 100 is used for connecting an external oil supply system.
The first valve assembly 200 includes a first directional valve 210 and a first pilot valve 220. The first directional valve 210 is a two-position three-way valve, and the first directional valve 210 has a P port, a T port, and an a port. The port P of the first directional valve 210 is communicated with the oil outlet of the first one-way valve 100, the port a of the first directional valve 210 is communicated with the pilot port of the first pilot valve 220, and the port T of the first directional valve 210 is communicated with the oil tank for oil discharge. When the first directional valve 210 is located at the first position, the port P of the first directional valve 210 is disconnected, and the port T of the first directional valve 210 is communicated with the port a; when the first directional valve 210 is at the second position, the port T of the first directional valve 210 is disconnected, and the port P of the first directional valve 210 is communicated with the port a. The first pilot valve 220 is a two-position four-way valve, and the first pilot valve 220 has a port P, a port T, a port a, and a port B. The port P of the first pilot valve 220 is communicated with the oil outlet of the first one-way valve 100, and the port T of the first pilot valve 220 is communicated with an oil tank for oil discharge. When the pilot port of the first pilot valve 220 is not conducted, the port P of the first pilot valve 220 is communicated with the port a, and the port T of the first pilot valve 220 is communicated with the port B; when the pilot port of the first pilot valve 220 is opened, the port P of the first pilot valve 220 communicates with the port B, and the port T of the first pilot valve 220 communicates with the port a.
The first valve assembly 200 includes a second directional valve 310 and a second pilot valve 320. The second valve assembly 300 is identical in structure to the first valve assembly 200. The port B of the first pilot valve 220 is respectively communicated with the port P of the second directional valve 310 and the port P of the second pilot valve 320, the port T of the second directional valve 310 and the port T of the second pilot valve 320 are communicated with an oil tank for unloading oil, the port A of the first pilot valve 220 is communicated with the same end of the hydraulic cylinder 700 through the second one-way valve 410 and the port A of the second pilot valve 320 through the first hydraulic control one-way valve 420, the port B of the second pilot valve 320 is communicated with the other end of the hydraulic cylinder 700, and the hydraulic control port of the first hydraulic control one-way valve 420 is communicated with an oil path between the port B of the second pilot valve 320 and the hydraulic cylinder 700.
The first reducing valve 430 is located on an oil path between the oil outlet of the first check valve 100 and the P port of the first directional valve 210 and the P port of the first pilot valve 220. The first pressure reducing valve 430 is mainly used for reducing the pressure of hydraulic oil in the system, and ensuring that the oil pressure is within a safe range.
In order to prevent the hydraulic oil of the oil tank for oil discharge from flowing back to the system, an oil discharge check valve 680 is connected to the end of the oil return path.
In this embodiment, the second check valve 410 and the first pilot check valve 420 are connected to the rod chamber of the hydraulic cylinder 700, and the port B of the second pilot valve 320 is connected to the rod chamber of the hydraulic cylinder 700. The system comprises the following working states:
1. when the first directional valve 210 and the second directional valve 310 are both in the first position state, at this time, the port P of the first pilot valve 220 is communicated with the port a, the port B of the first pilot valve 220 is communicated with the port T, the port P of the second pilot valve 320 is communicated with the port a, and the port B of the second pilot valve 320 is communicated with the port T. The hydraulic oil output from the external oil supply system passes through the first check valve 100 and the first pressure reducing valve 430, then passes through the port P and the port a of the first pilot valve 220, flows through the second check valve 410, and enters the rod chamber of the hydraulic cylinder 700, thereby pushing the piston to move toward the rod-less chamber. The hydraulic oil in the rodless cavity of the hydraulic cylinder 700 flows back to the oil tank for unloading oil through the port B and the port T of the second pilot valve 320. In this working state, the number of control valve assemblies passing through is small, and the oil speed is high, so that the piston of the hydraulic cylinder 700 can be quickly pushed to move towards the rodless cavity;
2. when the first directional valve 210 is located at the second position and the second directional valve 310 is located at the first position, the port P of the first pilot valve 220 is communicated with the port B, the port a of the first pilot valve 220 is communicated with the port T, the port P of the second pilot valve 320 is communicated with the port a, and the port B of the second pilot valve 320 is communicated with the port T. The hydraulic oil output by the external oil supply system passes through the first check valve 100 and the first reducing valve 430, then passes through the port P and the port B of the first pilot valve 220, the port P and the port a of the second pilot valve 320, and then passes through the first hydraulic control check valve 420 to enter the rod cavity of the hydraulic cylinder 700, thereby pushing the piston to move towards the rodless cavity. The hydraulic oil in the rodless cavity of the hydraulic cylinder 700 flows back to the oil tank for unloading oil through the port B and the port T of the second pilot valve 320. In this working state, the oil speed is reduced compared with the first working state, and the hydraulic cylinder 700 is suitable for being pushed by the piston at a low speed to move towards the rodless cavity;
3. when the first directional valve 210 and the second directional valve 310 are both in the second position state, at this time, the port P of the first pilot valve 220 is communicated with the port B, the port a of the first pilot valve 220 is communicated with the port T, the port P of the second pilot valve 320 is communicated with the port B, and the port a of the second pilot valve 320 is communicated with the port T. The hydraulic oil output from the external oil supply system passes through the first check valve 100 and the first pressure reducing valve 430, then passes through the port P and the port B of the first pilot valve 220 and the port P and the port B of the second pilot valve 320, and enters the rodless cavity of the hydraulic cylinder 700, thereby pushing the piston to move towards the rod cavity. At this time, since the pilot port of the first pilot check valve 420 receives the inlet oil pressure, the first pilot check valve 420 may be turned on in the reverse direction at this time. The hydraulic oil in the rod cavity of the hydraulic cylinder 700 finally flows back to the oil tank for unloading through the first pilot operated check valve 420 and the port a and the port T of the second pilot operated valve 320.
By utilizing the structure of combining the first valve assembly 200 and the second valve assembly 300, a plurality of mutually independent oil paths are formed between the first one-way valve 100 and the hydraulic cylinder 700, so that the hydraulic control system of the coke guide can work normally under the condition that one oil path has a fault, and the safety and the reliability of the system are improved.
In this scheme, the hydraulic control system of the coke guide further comprises an energy accumulator 510, and the energy accumulator 510 is communicated with an oil outlet of the first check valve 100 and an oil inlet of the first pressure reducing valve 430. The accumulator 510 can save energy and maintain the oil pressure stable. The external oil supply system outputs hydraulic oil for supplying both the control system and the accumulator 510. When the external oil supply stops, the accumulator 510 can release the oil pressure, ensuring the stability of the oil pressure of the system.
In order to prevent the oil pressure charged in the accumulator 510 from being too high and exceeding the safe pressure value of the system, the hydraulic control system of the coke guide further comprises a second pressure reducing valve 520, the oil inlet of the second pressure reducing valve 520 is communicated with the accumulator 510, the oil outlet of the second pressure reducing valve 520 is communicated with an oil tank for discharging oil, and the set oil pressure of the second pressure reducing valve 520 is greater than the set oil pressure of the first pressure reducing valve 430. The set oil pressure of the second pressure reducing valve 520 is greater than the set oil pressure of the first pressure reducing valve 430, so that the hydraulic oil in the accumulator 510 can be prevented from being directly output to a tank for discharging the hydraulic oil through the second pressure reducing valve 520, and the functional failure of the accumulator 510 in maintaining the system oil pressure can be avoided.
In order to further improve the safety of the accumulator 510, a manual unloading valve 530 is connected in parallel to both ends of the second pressure reducing valve 520, and the initial state of the manual unloading valve 530 is a closed state. When the second pressure relief valve 520 fails, the operator may achieve rapid pressure relief by opening the manual unloader valve 530.
In addition, the hydraulic control system of the coke guide further comprises a first stop valve 540, and the first stop valve 540 is positioned on an oil path between the first check valve 100 and the accumulator 510, the manual unloading valve 530 and the second reducing valve 520. The first cutoff valve 540 can cut off the communication between the accumulator 510 and the external oil supply system, thereby facilitating the repair or replacement of the accumulator 510, the manual unloading valve 530, and the second pressure reducing valve 520.
The hydraulic control system of the coke guide further comprises a first one-way throttle valve 610 and a second one-way throttle valve 620, the first one-way throttle valve 610 is located on an oil path between the port A of the second pilot valve 320 and the first pilot-controlled one-way valve 420, the second one-way throttle valve 620 is located on an oil path between the port B of the second pilot valve 320 and the hydraulic cylinder 700, and one-way oil outlets of the first one-way throttle valve 610 and the second one-way throttle valve 620 are connected with the second pilot valve 320. The first one-way throttle 610 and the second one-way throttle 620 can control the flow rate in the oil inlet direction without affecting the flow rate in the oil return direction.
In this embodiment, the hydraulic control system of the coke guide further includes a second stop valve 630, and the second stop valve 630 is located on the oil path between the second one-way throttle valve 620 and the hydraulic cylinder 700. The second stop valve 630 is used to cut off the connection between the second one-way throttle valve 620 and the hydraulic cylinder 700, which enhances the safety of the system and also improves the convenience of maintenance.
The hydraulic control system of the coke guide further comprises a third stop valve 640, one end of the third stop valve 640 is communicated with the hydraulic cylinder 700, and the other end of the third stop valve 640 is connected with the oil outlets of the second check valve 410 and the first hydraulic control check valve 420. The third stop valve 640 is used for cutting off the connection relationship among the second check valve 410, the first pilot operated check valve 420 and the hydraulic cylinder 700, so that the safety of the system is enhanced, and the convenience of maintenance is also improved.
In addition, the hydraulic control system of the coke guide further comprises a second hydraulic check valve 650, and the second hydraulic check valve 650 is located on an oil path between the third stop valve 640 and the hydraulic cylinder 700. The second hydraulic check valve 650 can play a role of pressure maintaining. Meanwhile, by controlling the hydraulic control port of the second hydraulic control check valve 650, the hydraulic oil in the rod chamber of the hydraulic cylinder 700 can reversely flow back through the second hydraulic control check valve 650.
The hydraulic control system of the coke guide further comprises a third one-way valve 660, an oil outlet of the third one-way valve 660 is communicated with an oil outlet of the second hydraulic control one-way valve 650, and an oil inlet of the third one-way valve 660 is a spare oil port. The third check valve 660 forms a backup oil path, and the backup oil path is used only when an oil path formed by the second hydraulic check valve 650 and the third stop valve 640 fails or the flow rate of the oil path formed by the second hydraulic check valve 650 and the third stop valve 640 cannot meet the requirement.
In addition, the hydraulic control system of the coke guide further includes a check valve 670, both ends of the check valve 670 are connected to both ends of the hydraulic cylinder 700, respectively, and the initial state of the check valve 670 is a closed state. When the check valve 670 is opened, the position of the piston can be manually finely adjusted, so that the piston rod is accurately aligned with an actuating mechanism on the coke guide.
A plurality of pressure gauges 690 are further installed in the system and used for detecting oil pressure on different oil ways of the display system.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (11)
1. A hydraulic control system of a coke guide is characterized by comprising:
the oil inlet of the first one-way valve is used for connecting an external oil supply system;
the first valve assembly comprises a first directional valve and a first pilot valve, the first directional valve is a two-position three-way valve, the first directional valve is provided with a P port, a T port and an A port, the P port of the first directional valve is communicated with an oil outlet of the first one-way valve, the A port of the first directional valve is communicated with a pilot port of the first pilot valve, and the T port of the first directional valve is communicated with an oil tank for unloading oil; when the first directional valve is positioned at a first position, the P port of the first directional valve is disconnected, and the T port of the first directional valve is communicated with the A port; when the first directional valve is located at the second position, the T port of the first directional valve is disconnected, and the P port of the first directional valve is communicated with the A port;
the first pilot valve is a two-position four-way valve and is provided with a port P, a port T, a port A and a port B, the port P of the first pilot valve is communicated with an oil outlet of the first one-way valve, and the port T of the first pilot valve is communicated with an oil tank for oil discharge; when the pilot port of the first pilot valve is not communicated, the port P of the first pilot valve is communicated with the port A, and the port T of the first pilot valve is communicated with the port B; when the pilot port of the first pilot valve is communicated, the port P of the first pilot valve is communicated with the port B, and the port T of the first pilot valve is communicated with the port A;
the first valve component comprises a first directional valve and a first pilot valve, the first valve component and the first valve component are identical in structure, a port B of the first pilot valve is communicated with a port P of the first directional valve and a port P of the first pilot valve respectively, a port T of the first directional valve and a port T of the first pilot valve are communicated with an oil tank for unloading oil, a port A of the first pilot valve is communicated with the same end of the hydraulic cylinder through a first hydraulic control one-way valve and a port A of the first pilot valve, a port B of the first pilot valve is communicated with the other end of the hydraulic cylinder, and a hydraulic control port of the first hydraulic control one-way valve is communicated with an oil path between the port B of the first pilot valve and the hydraulic cylinder;
and the first reducing valve is positioned on an oil path between the oil outlet of the first one-way valve and the P port of the first directional valve and the P port of the first pilot valve.
2. The coke guide hydraulic control system of claim 1, further comprising an accumulator in communication with an oil outlet of the first check valve and an oil inlet of the first pressure relief valve.
3. The coke guide hydraulic control system of claim 2, further comprising a second pressure reducing valve, wherein an oil inlet of the second pressure reducing valve is communicated with the accumulator, an oil outlet of the second pressure reducing valve is communicated with an oil tank for oil discharge, and a set oil pressure of the second pressure reducing valve is greater than a set oil pressure of the first pressure reducing valve.
4. The coke guide hydraulic control system of claim 3, wherein a manual unloading valve is connected in parallel to two ends of the second pressure reducing valve, and the initial state of the manual unloading valve is a closed state.
5. The coke guide hydraulic control system of claim 4, further comprising a first shut-off valve positioned on an oil path between the first check valve and the accumulator, the manual unloader valve, and the second pressure relief valve.
6. The hydraulic control system of a coke guide as recited in claim 1, further comprising a first one-way throttle valve and a second one-way throttle valve, wherein the first one-way throttle valve is located on an oil path between the port a of the second pilot valve and the first pilot-operated one-way valve, the second one-way throttle valve is located on an oil path between the port B of the second pilot valve and the hydraulic cylinder, and one-way oil outlets of the first one-way throttle valve and the second one-way throttle valve are both connected to the second pilot valve.
7. The coke guide hydraulic control system of claim 6, further comprising a second shutoff valve on an oil path between the second choke check valve and the hydraulic cylinder.
8. The coke guide hydraulic control system of claim 6, further comprising a third stop valve, wherein one end of the third stop valve is in communication with the hydraulic cylinder, and the other end of the third stop valve is connected to the second check valve and the oil outlet of the first pilot operated check valve.
9. The coke guide hydraulic control system of claim 8, further comprising a second hydraulically controlled check valve positioned on the oil path between the third stop valve and the hydraulic cylinder.
10. The coke guide hydraulic control system of claim 9, further comprising a third check valve, an oil outlet of the third check valve being in communication with an oil outlet of the second hydraulic control check valve, and an oil inlet of the third check valve being a backup oil port.
11. The coke guide hydraulic control system of claim 1, further comprising a check valve having ends connected to ends of the hydraulic cylinder, respectively, the check valve being initially closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921625875.5U CN210660802U (en) | 2019-09-26 | 2019-09-26 | Hydraulic control system of coke guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921625875.5U CN210660802U (en) | 2019-09-26 | 2019-09-26 | Hydraulic control system of coke guide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210660802U true CN210660802U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921625875.5U Active CN210660802U (en) | 2019-09-26 | 2019-09-26 | Hydraulic control system of coke guide |
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| Country | Link |
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| CN (1) | CN210660802U (en) |
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2019
- 2019-09-26 CN CN201921625875.5U patent/CN210660802U/en active Active
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 600, changta Road, Songjiang District, Shanghai, 201617 Patentee after: Shanghai shengkesisi Hydraulic Co.,Ltd. Address before: No. 600, changta Road, Songjiang District, Shanghai, 201617 Patentee before: SHANGHAI SUCCESS HYDRAULICS PRESS Co.,Ltd. |
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Denomination of utility model: Hydraulic control system of coke trap Effective date of registration: 20230105 Granted publication date: 20200602 Pledgee: Agricultural Bank of China Limited Shanghai Songjiang Sub-branch Pledgor: Shanghai shengkesisi Hydraulic Co.,Ltd. Registration number: Y2023980030417 |
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Granted publication date: 20200602 Pledgee: Agricultural Bank of China Limited Shanghai Songjiang Sub-branch Pledgor: Shanghai shengkesisi Hydraulic Co.,Ltd. Registration number: Y2023980030417 |