CN212928387U - Filter device and system for quickly cutting off oil in oil suction pipeline - Google Patents
Filter device and system for quickly cutting off oil in oil suction pipeline Download PDFInfo
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- CN212928387U CN212928387U CN202020132772.1U CN202020132772U CN212928387U CN 212928387 U CN212928387 U CN 212928387U CN 202020132772 U CN202020132772 U CN 202020132772U CN 212928387 U CN212928387 U CN 212928387U
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Abstract
The utility model relates to a filter equipment, system and control method of oil absorption pipeline fluid cut off fast. The filter device comprises an oil absorption filter body (2), one end of the oil absorption filter body (2) is provided with an oil suction port (3), the other end of the oil absorption filter body is provided with a single-action oil cylinder with a spring and an end cover assembly (1), and the outer side of the oil suction port (3) is sequentially provided with an oil suction port cover plate (4) and an oil suction port cover plate spring (5). The filter system comprises a pressure oil source (33), an energy accumulator assembly (35), an emergency operation valve group (40) and a plurality of filter devices for quickly cutting off oil in the oil suction pipeline, wherein the pressure oil source (33) is connected with the energy accumulator assembly (35), the energy accumulator assembly (35) is connected with the emergency operation valve group (40), and the emergency operation valve group (40) is respectively connected with the filter devices for quickly cutting off the oil in the oil suction pipeline. The utility model discloses convenient operation can realize cutting off the technological effect of hydraulic tank oil absorption filter pipeline fluid fast.
Description
Technical Field
The utility model belongs to machinery hydraulic system field especially relates to a cut off filter equipment, system of oil absorption pipeline fluid fast.
Background
The railway network lines in China are widely distributed, and large-scale road maintenance machinery is indispensable in new line construction, old line overhaul and operation line maintenance operation of lines. The hydraulic system is an important component of most large road maintenance machines, the volume of a hydraulic oil tank in the hydraulic system is almost more than 1000L, and the tube diameter of a plurality of oil suction pipelines positioned at the lower part of the hydraulic oil tank is as large as 102mm, and some oil suction pipelines are even more than 2000L. Therefore, when an emergency fire happens to a large road maintenance machine, if the oil suction pipeline is burnt out, leaked hydraulic oil can support the fire to a great extent, and further a greater fire accident is caused, so that the safety of a workshop or a line where a vehicle is located is endangered.
At present, an oil suction filter used by a hydraulic oil tank of a large railway maintenance machine removes an end cover assembly of the end part of the oil suction filter to remove the axial force of an oil suction cover plate, and an oil suction port is sealed under the action of an oil suction cover plate spring, so that a connecting channel between oil of the hydraulic oil tank and an oil suction pipeline is cut off. Although the oil suction pipeline hydraulic oil cutting function can be realized by the scheme, the end cover assembly is connected with the oil suction filter body through the threads, so that the end cover assemblies of the oil suction filters need to be manually disassembled one by one when all oil suction pipelines of the oil suction filters installed in the hydraulic oil tank of the large-scale road maintenance machinery are cut off, the operation is complicated, time and labor are wasted, and especially when an emergency fire occurs, the technical requirement of emergency treatment cannot be met when the oil suction pipeline is cut off by adopting the scheme for disassembling the end cover assembly.
Therefore, it is necessary to design a filter device for quickly cutting off oil in an oil suction pipeline, so as to quickly separate the oil in a hydraulic oil tank from the oil suction pipeline in an emergency, thereby preventing a greater fire accident.
Chinese utility model patent for ZL201120467284.7 discloses a hydraulic tank oil absorption filter, and according to this utility model embodiment's hydraulic tank oil absorption filter includes: the flange plate is provided with an oil through hole; one end of the oil suction pipe is connected with one side surface of the flange plate, and the oil suction pipe and the flange plate are integrally formed by injection molding; the oil absorption filtering piece is installed on the other side face of the flange plate and is communicated with the oil absorption pipe through the oil through hole of the flange plate. According to this utility model discloses hydraulic tank oil absorption filter is through inciting somebody to action the ring flange with inhale oil pipe and establish into an organic piece to have advantages such as manufacturing process is simple, with low costs, inside cleanliness height. However, the utility model is only suitable for automobiles and is not suitable for hydraulic systems of large railway maintenance machines, so the improvement is still needed.
SUMMERY OF THE UTILITY MODEL
The technical defects of the existing hydraulic oil tank oil suction filter are overcome, the technical effect that the oil in the oil suction pipeline of the hydraulic oil tank is quickly cut off by a large railway maintenance machine is achieved, the problem that combustion is supported due to leakage of hydraulic oil under an emergency fire condition to cause greater safety is effectively solved, and the safety of a vehicle or a line where a vehicle is located is guaranteed. The utility model provides a cut off filter device, system of oil absorption pipeline fluid fast.
The utility model discloses it is preferred cut off the technical scheme of the filter equipment who inhales oil pipe way fluid fast specifically as follows:
the filter device and the system for quickly cutting off oil in the oil suction pipeline comprise an oil suction filter body and a filter system, wherein an oil suction opening is formed in one end of the oil suction filter body, an oil suction opening cover plate is installed on the outer side of the oil suction opening, an oil suction opening cover plate spring is installed on the outer side of the oil suction opening cover plate, and a single-action oil cylinder with a spring and an end cover assembly are installed at the other end of the oil suction filter body.
Preferably, the single-acting oil cylinder with the spring and the end cover component comprise a single-acting oil cylinder with the spring and an end cover body, the single-acting oil cylinder with the spring and the end cover body are fixedly and hermetically connected, a through hole is formed in the center of the end cover body, the single-acting oil cylinder with the spring comprises a shell, a piston rod and a spring top plate assembly, and the front end of the piston rod penetrates through the through hole and is connected with the spring top plate assembly through a connecting sleeve.
In any of the above schemes, it is preferable that the casing front end face is an installation face, the installation face is provided with a sealing groove and is uniformly provided with a plurality of threaded installation holes along the circumferential direction, a sealing ring is installed in the sealing groove, one end of the end cover body is provided with a sinking platform, the bottom face of the sinking platform is uniformly provided with a plurality of installation holes along the circumferential direction, the threaded installation holes correspond to the installation holes one by one and are fixedly and hermetically connected through bolts, and the bottom face of the sinking platform and the inner circular face thereof are respectively in contact with the installation face and the outer circular face thereof to form a joint face.
In any of the above schemes, preferably, the housing is respectively provided with an oil inlet, a breathing port and an oil outlet, and the rear end of the piston rod is sleeved with a spring.
The utility model discloses it is preferred cut off the technical scheme of the filter system who inhales oil pipe way fluid fast specifically as follows:
the filter system comprises a pressure oil source, an energy accumulator assembly and an emergency operation valve group, the pressure oil source is connected with the energy accumulator assembly through a first pipeline, the energy accumulator assembly is connected with the emergency operation valve group through a third pipeline, and the emergency operation valve group is respectively connected with the filter devices for quickly cutting off oil in the oil suction pipeline.
Preferably, the accumulator assembly comprises an accumulator and a safety valve, the accumulator is connected with the safety valve, and the safety valve is provided with a first pressure oil port, a stop valve, a second pressure oil port and an oil return port respectively.
In any of the above schemes, preferably, the hydraulic oil tank comprises a first hydraulic oil tank, and the first hydraulic oil tank is connected with the oil return port through a second pipeline.
In any of the above schemes, preferably, the emergency operation valve group includes a transition block and a three-way rotary valve, the transition block is provided with a plurality of joints, the transition block is connected with the three-way rotary valve, and the three-way rotary valve is provided with a pressure gauge.
In any of the above schemes, preferably, the hydraulic system comprises a second hydraulic oil tank, and the second hydraulic oil tank is connected with the three-way rotary valve through a fourth pipeline.
In any of the above schemes, it is preferable that the number of the filter devices for quickly cutting off the oil in the oil suction pipeline is seven, the filter devices are respectively a filter device for quickly cutting off the oil in the oil suction pipeline, and the filter devices for quickly cutting off the oil in the oil suction pipeline are respectively connected to the emergency operation valve group through a fifth pipeline, a sixth pipeline, a seventh pipeline, an eighth pipeline, a ninth pipeline, a tenth pipeline, and an eleventh pipeline.
Compared with the prior art, the utility model beneficial effect be: the end cover assembly of the existing oil absorption filter is improved into the filter device which is provided with the spring single-action oil cylinder and the end cover component and used for quickly cutting off oil in the oil absorption pipeline, so that the oil in the oil absorption pipeline can be quickly cut off under the condition that the spring single-action oil cylinder and the end cover component are not dismounted, namely, the oil absorption port is quickly sealed in a mode that the axial force of the oil absorption port cover plate is removed through the action of the piston rod in the spring single-action oil cylinder, and the technical effect of quickly cutting off the oil in the oil absorption pipeline of the oil absorption filter of. The utility model discloses can realize cutting off fast to large-scale road maintaining machinery hydraulic tank oil absorption pipeline system fluid, the oil absorption mouth of a plurality of filter device in the filter system of oil absorption pipeline fluid that cuts off fast can realize sealing simultaneously, convenient operation just cuts off rapidly to ensure the safety of vehicle workshop or circuit that locate when the urgent condition of a fire takes place for large-scale road maintaining machinery. The utility model discloses also can be under the condition that need not take hydraulic tank fluid out, the oil absorption pipeline fluid that the hydraulic pump that has pertinence cut off fast and need demolish, overhaul or change corresponds reduces the activity duration by a wide margin.
Drawings
Fig. 1 is a front view of a preferred embodiment of a filter device and system for quickly cutting off oil in an oil suction line in accordance with the present invention.
Fig. 2 is an isometric view of a preferred embodiment of a filter assembly and system for quickly cutting off oil in a suction line according to the present invention.
Fig. 3 is an isometric view of a preferred embodiment of a spring single acting cylinder in a filter assembly and system for quickly cutting off oil in an oil suction line according to the present invention.
Fig. 4 is a cross-sectional view of a preferred embodiment of a spring-loaded single-acting cylinder in a filter assembly and system for quickly cutting off oil in an oil suction line in accordance with the present invention.
Figure 5 is an isometric view of a spring single action cylinder and end cap assembly in a normal condition in a filter apparatus and system for rapidly cutting off oil in an oil suction line according to the present invention.
Fig. 6 is a partial cross-sectional view of a spring-loaded single-acting cylinder and end cap assembly in a normal state in a filter apparatus and system for rapidly cutting off oil in an oil suction line according to the present invention.
Figure 7 is an isometric view of a spring single action cylinder and end cap assembly in emergency in a filter apparatus and system for rapidly cutting off oil suction line fluid according to the present invention.
Fig. 8 is a partial cross-sectional view of a spring-loaded single-acting cylinder and end cap assembly in an emergency state in a filter apparatus and system for rapidly cutting off oil in an oil suction line according to the present invention.
Fig. 9 is a front view of a preferred embodiment of a filter assembly for quickly cutting off oil in an oil suction line and an accumulator assembly in a system according to the present invention.
Fig. 10 is a front view of a preferred embodiment of an emergency service valve assembly in a filter assembly and system for quickly shutting off oil in an oil suction line according to the present invention.
Fig. 11 is a schematic diagram of the hydraulic system of a preferred embodiment of the filter device and system for quickly cutting off oil in the oil suction line according to the present invention.
Fig. 12 is a front view of a prior art large road maintenance machine oil suction filter.
Figure 13 is an isometric view of a prior art macro road maintenance mechanical oil suction filter.
Fig. 14 is a front view of a prior art oil suction filter end cap assembly.
Fig. 15 is a cross-sectional view of a prior art oil suction filter end cap assembly.
Description of reference numerals:
1, a single-action oil cylinder with a spring and an end cover assembly; 2 an oil absorption filter body; 3 oil suction port; 4 oil suction cover plate; 5 oil suction cover plate springs; 6, mounting holes with threads; 7, a shell; 8, an oil inlet; 9 a breathing port; 10 springs; 11 oil discharging; 12 mounting surfaces; 13 a piston rod; 14 sealing grooves; 15 single-acting oil cylinder with spring; 16 an end cap body; 17 a through hole; 18 mounting holes; 19, bolts; 20 a bonding surface; 21 connecting sleeves; 22 a spring top plate assembly; 23 an accumulator; 24 a safety valve; 25 a first pressure oil port; 26 a stop valve; 27 a second pressure oil port; 28 oil return port; 29 a transition block; 30 joints; 31 three-way rotary valve; a 32 pressure gauge; 33 a source of pressurized oil; 34 a first conduit; 35 an accumulator assembly; 36 a second conduit; 37.1 a first hydraulic reservoir; 37.2 a second hydraulic tank; 38 a third conduit; 39 a fourth conduit; 40 emergency operation valve group; 41 a fifth pipeline; 42 a sixth line; 43 a seventh conduit; 44 eighth line; 45 ninth line; 46 tenth line; 47 eleventh line; 48.1 a first filter device for quickly cutting off oil in an oil suction pipeline; 48.2 a second filter device for quickly cutting off oil in the oil suction pipeline; 48.3 a third filter device for quickly cutting off oil in the oil suction pipeline; 48.4 a fourth filter device for quickly cutting off oil in the oil suction pipeline; 48.5 a fifth filter device for quickly cutting off oil in the oil suction pipeline; 48.6 a sixth filter device for quickly cutting off oil in the oil suction pipeline; 48.7 a seventh filter device for quickly cutting off oil in the oil suction pipeline; 49 existing end cap assemblies; 50 existing end cap body.
Detailed Description
The technical scheme of the filter device and the system for quickly cutting off oil in the oil suction pipeline is described in detail with reference to fig. 1-13 as follows:
the utility model discloses filter equipment and system technical scheme of preferred quick oil absorption pipeline fluid cut off, including oil absorption filter body 2, open oil absorption filter body 2 one end has oil absorption opening 3, and oil absorption opening apron 4 is equipped with in the 3 outsides of oil absorption opening, and oil absorption opening apron spring 5 is equipped with in the 4 outsides of oil absorption opening apron, and the 2 other ends of oil absorption filter body are equipped with and take spring nonoculture hydro-cylinder and end cover subassembly 1.
The oil cylinder with the spring and the end cover component 1 comprise an oil cylinder 15 with the spring and a end cover body 16, the oil cylinder 15 with the spring and the end cover body 16 are fixedly and hermetically connected, a through hole 17 is formed in the center of the end cover body 16, the oil cylinder 15 with the spring and the single action comprises a shell 7, a piston rod 13 and a spring top plate assembly 22, and the front end of the piston rod 13 penetrates through the through hole 17 and is connected with the spring top plate assembly 22 through a connecting sleeve 21.
The front end face of the shell 7 is a mounting face 12, a sealing groove 14 is formed in the mounting face 12, a plurality of threaded mounting holes 6 are evenly distributed in the circumferential direction, a sealing ring is arranged in the sealing groove 14, a sinking platform is formed at one end of the end cover body 16, a plurality of mounting holes 18 are evenly distributed in the circumferential direction of the bottom face of the sinking platform, the threaded mounting holes 6 and the mounting holes 18 correspond to each other one by one and are fixedly and hermetically connected through bolts 19, and the bottom face of the sinking platform and the inner circular face of the sinking platform are respectively in contact with the mounting face 12 and the outer circular face of.
An oil inlet 8, a breathing port 9 and an oil outlet 11 are respectively arranged on the shell 7, and the rear end of a piston rod 13 is sleeved with a spring 10.
The utility model discloses an improve the end cover assembly 49 that will have the oil absorption filter now and cut off the filter equipment of oil absorption pipeline fluid fast for taking spring single-action hydro-cylinder and end cover subassembly 1, can realize cutting off oil absorption pipeline fluid fast under the condition of taking spring single-action hydro-cylinder and end cover subassembly 1 not demolising, close its oil absorption mouth 3 fast through the mode that takes the 4 axial forces of piston rod 13 action relieving its oil absorption mouth apron in the spring single-action hydro-cylinder 15 promptly to realize cutting off the technological effect of hydraulic tank oil absorption filter pipeline fluid fast.
The utility model discloses filter equipment and system technical scheme of preferred quick oil absorption pipeline fluid cut off, including pressure oil source 33, energy storage ware assembly 35 and emergency operation valves 40, be connected through first pipeline 34 between pressure oil source 33 and the energy storage ware assembly 35, be connected through third pipeline 38 between energy storage ware assembly 35 and the emergency operation valves 40, including a plurality of filter equipment that cut off oil absorption pipeline fluid fast, emergency operation valves 40 respectively with a plurality of filter equipment that cut off oil absorption pipeline fluid fast are connected.
The accumulator assembly 35 comprises an accumulator 23 and a safety valve 24, the accumulator 23 is connected with the safety valve 24, and the safety valve 24 is provided with a first pressure oil port 25, a stop valve 26, a second pressure oil port 27 and an oil return port 28.
Comprises a first hydraulic reservoir 37.1, which first hydraulic reservoir 37.1 is connected to the return opening 28 via a second line 36.
The emergency operation valve group 40 comprises a transition block 29 and a three-way rotary valve 31, wherein the transition block 29 is provided with a plurality of joints 30, the transition block 29 is connected with the three-way rotary valve 31, and the three-way rotary valve 31 is provided with a pressure gauge 32.
The hydraulic system comprises a second hydraulic oil tank 37.2, and the second hydraulic oil tank 37.2 is connected with the three-way rotary valve 31 through a fourth pipeline 39.
The filter devices for quickly cutting off the oil in the oil suction pipeline are preferably seven, and are respectively a first filter device 48.1 for quickly cutting off the oil in the oil suction pipeline, a second filter device 48.2 for quickly cutting off the oil in the oil suction pipeline, a third filter device 48.3 for quickly cutting off the oil in the oil suction pipeline, a fourth filter device 48.4 for quickly cutting off the oil in the oil suction pipeline, a fifth filter device 48.5 for quickly cutting off the oil in the oil suction pipeline, a sixth filter device 48.6 for quickly cutting off the oil in the oil suction pipeline and a seventh filter device 48.7 for quickly cutting off the oil in the oil suction pipeline, and the seven filter devices for quickly cutting off the oil in the oil suction pipeline are respectively connected with the emergency operation valve group 40 through a fifth pipeline 41, a sixth pipeline 42, a seventh pipeline 43, an eighth pipeline 44, a ninth pipeline 45, a tenth pipeline 46 and an eleventh pipeline 47.
The utility model discloses a theory of operation: during charging, the stop valve 26 in the accumulator assembly 35, which is a pressure oil storage component, is opened, at this time, the position between the three-way rotary valve 31 and the third pipeline 38 in the emergency operation component, which is the emergency operation valve group 40, is in a stop state, the pressure oil source 33 enters the accumulator 23 through the first pipeline 34, when the oil pressure reaches the set pressure of the safety valve 24, the stop valve 26 is closed, and at this time, the pressure oil can be stored in the accumulator assembly 35; when an emergency fire occurs, the handle of the three-way rotary valve 31 in the emergency operation valve group 40 is rotated until the third pipeline 38 and the three-way rotary valve 31 are in a communication position, and at the moment, the actuating elements, namely the plurality of filter devices for quickly cutting off the oil in the oil suction pipeline, start to act, so that the oil in the oil suction pipeline is quickly cut off.
In an emergency situation, when the handle of the three-way rotary valve 31 in the emergency operation valve set 40 is rotated, the filter devices for quickly cutting off the oil in the oil suction pipeline are switched from a normal state to an emergency state, the pressure oil stored in the energy accumulator assembly 35 enters the oil inlet 8 on the single-action oil cylinder 15 with the spring in the filter devices for quickly cutting off the oil in the oil suction pipeline through the pipelines respectively and enters the inner cavity of the filter devices for quickly cutting off the oil in the oil suction pipeline, the acting force of the spring 10 on the piston rod 13 is overcome, the piston rod 13 retracts at the moment, the single-action oil cylinder with the spring and the end cover component 1 are switched from the normal state to the emergency state, the axial force of the oil suction port cover plate 4 is relieved at the moment, and the oil suction port 3 is. The above examples are only preferred technical solutions, wherein the connection relationships between the components involved are not limited to the above described embodiments, and the connection relationships between the components in the preferred technical solutions can be arranged and combined arbitrarily to form complete technical solutions.
Claims (10)
1. The filter device capable of quickly cutting off oil in an oil suction pipeline comprises an oil suction filter body (2), wherein one end of the oil suction filter body (2) is provided with an oil suction port (3), an oil suction port cover plate (4) is arranged on the outer side of the oil suction port (3), and an oil suction port cover plate spring (5) is arranged on the outer side of the oil suction port cover plate (4).
2. The filter device for quickly cutting off oil in an oil suction pipeline according to claim 1, wherein the single-acting oil cylinder with the spring and the end cover assembly (1) comprise a single-acting oil cylinder with the spring (15) and an end cover body (16), the single-acting oil cylinder with the spring (15) is fixedly and hermetically connected with the end cover body (16), a through hole (17) is formed in the center of the end cover body (16), the single-acting oil cylinder with the spring (15) comprises a shell (7), a piston rod (13) and a spring top plate assembly (22), and the front end of the piston rod (13) penetrates through the through hole (17) and is connected with the spring top plate assembly (22) through a connecting sleeve (21).
3. The filter device for quickly cutting off oil in an oil suction pipeline according to claim 2, wherein the front end surface of the shell (7) is a mounting surface (12), the mounting surface (12) is provided with a sealing groove (14) and a plurality of threaded mounting holes (6) uniformly distributed along a circumferential direction, a sealing ring is arranged in the sealing groove (14), one end of the end cover body (16) is provided with a sinking platform, a plurality of mounting holes (18) are uniformly distributed along the circumferential direction on the bottom surface of the sinking platform, the threaded mounting holes (6) are in one-to-one correspondence with the mounting holes (18) and are fixedly and hermetically connected through bolts (19), and the bottom surface of the sinking platform and the inner circular surface of the sinking platform are respectively contacted with the mounting surface (12) and the outer circular surface of.
4. The filter device for quickly cutting off oil in an oil suction pipeline according to claim 2, wherein the shell (7) is respectively provided with an oil inlet (8), a breathing port (9) and an oil outlet (11), and the rear end of the piston rod (13) is sleeved with the spring (10).
5. Filter system for the rapid cut-off of oil in an oil suction line, comprising a filter device according to any one of claims 1 to 4, and further comprising a pressure oil source (33), an accumulator assembly (35) and an emergency operating valve group (40), the pressure oil source (33) being connected to the accumulator assembly (35) by a first line (34), the accumulator assembly (35) being connected to the emergency operating valve group (40) by a third line (38), characterized in that it comprises a plurality of filter devices for the rapid cut-off of oil in an oil suction line, the emergency operating valve group (40) being respectively connected to the plurality of filter devices for the rapid cut-off of oil in an oil suction line.
6. The filter system for rapidly cutting off oil in an oil suction line according to claim 5, wherein the accumulator assembly (35) comprises an accumulator (23) and a safety valve (24), the accumulator (23) is connected with the safety valve (24), and the safety valve (24) is provided with a first pressure oil port (25), a stop valve (26), a second pressure oil port (27) and an oil return port (28).
7. Filter system for the quick shut-off of oil in the suction line according to claim 6, characterised in that it comprises a first hydraulic tank (37.1), the first hydraulic tank (37.1) being connected to the return (28) by means of a second line (36).
8. The filter system for quickly cutting off oil in an oil suction line according to claim 5, wherein the emergency operation valve set (40) comprises a transition block (29) and a three-way rotary valve (31), the transition block (29) is provided with a plurality of joints (30), the transition block (29) is connected with the three-way rotary valve (31), and the three-way rotary valve (31) is provided with a pressure gauge (32).
9. Filter system for the quick shut-off of the oil in the suction line according to claim 8, characterised in that it comprises a second hydraulic tank (37.2), the second hydraulic tank (37.2) being connected to the three-way rotary valve (31) by means of a fourth line (39).
10. The filter system for the quick cut of oil in an oil suction line according to claim 5, characterized in that the number of filter devices for the quick cut of oil in an oil suction line is seven, namely a first filter device (48.1) for the quick cut of oil in an oil suction line, a second filter device (48.2) for the quick cut of oil in an oil suction line, a third filter device (48.3) for the quick cut of oil in an oil suction line, a fourth filter device (48.4) for the quick cut of oil in an oil suction line, a fifth filter device (48.5) for the quick cut of oil in an oil suction line, a sixth filter device (48.6) for the quick cut of oil in an oil suction line and a seventh filter device (48.7) for the quick cut of oil in an oil suction line, which are connected to each other through a fifth line (41), a sixth line (42), a seventh line (43) and a fourth line (43), The eighth pipeline (44), the ninth pipeline (45), the tenth pipeline (46) and the eleventh pipeline (47) are connected with the emergency operation valve group (40).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020132772.1U CN212928387U (en) | 2020-01-20 | 2020-01-20 | Filter device and system for quickly cutting off oil in oil suction pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020132772.1U CN212928387U (en) | 2020-01-20 | 2020-01-20 | Filter device and system for quickly cutting off oil in oil suction pipeline |
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| CN212928387U true CN212928387U (en) | 2021-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120458A (en) * | 2020-01-20 | 2020-05-08 | 中国铁建高新装备股份有限公司 | Filter device, system and control method for quickly cutting off oil in oil suction pipeline |
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2020
- 2020-01-20 CN CN202020132772.1U patent/CN212928387U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120458A (en) * | 2020-01-20 | 2020-05-08 | 中国铁建高新装备股份有限公司 | Filter device, system and control method for quickly cutting off oil in oil suction pipeline |
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