CN209858196U - Mobile detection device for detecting shield machine pump - Google Patents
Mobile detection device for detecting shield machine pump Download PDFInfo
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- CN209858196U CN209858196U CN201920655510.0U CN201920655510U CN209858196U CN 209858196 U CN209858196 U CN 209858196U CN 201920655510 U CN201920655510 U CN 201920655510U CN 209858196 U CN209858196 U CN 209858196U
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Abstract
The utility model relates to a shield structure construction technical field especially relates to a mobile detection device for detecting shield constructs quick-witted pump, be provided with an at least detection pipeline on the mobile detection device, the oil feed end of every detection pipeline is provided with a plurality of interfaces, make it match the interface end that the oil pump of each work of shield structure machine was exported respectively, the oil feed end of detection pipeline is to going out the oil end and installing the proportion overflow valve in proper order, the flowmeter, pressure sensor, temperature sensor and filter, it detects the interface that the oil end of pipeline is provided with the interface of being connected with the oil tank, be provided with many oil return pipelines on the mobile detection device, oil feed end of oil return pipeline is provided with the interface that is connected with the draining mouth or the integrated piece oil return mouth of each shield structure machine work pump, oil return pipeline's end that goes. The oil suction port, the oil return port and the oil leakage port of the tested pump are respectively connected with corresponding interfaces of the mobile detection device, so that the shield machine can monitor the shield machine pump on line in a shutdown state.
Description
Technical Field
The utility model relates to a shield constructs construction technical field, especially relates to a remove detection device for detecting shield constructs quick-witted pump.
Background
At present, the performance detection of each working pump of the shield machine is mainly to disassemble the working pump to be detected from the shield machine, then transport the shield machine pump to be detected to a detection factory through length, so as to achieve the purpose of detecting the performance of the working pump of the shield machine, then issue a maintenance scheme according to the detection result, but the detection method consumes time and manpower, and if the original equipment is transported to the shield construction environment, the working pump on the shield machine cannot be directly detected, and the detection can be carried out after the working pump on the shield machine is disassembled, however, when the shield machine is shut down, the respective working pump still works continuously, such as the working pump used for cooling the main bearing of the shield machine, the working pump still needs to work continuously to cool the main bearing under the shutdown state of the shield machine, if the working pump of the shield machine at the position needs to be detected, the detection can be disassembled after the normal work of the working pump is completed, the detection mode wastes time and labor greatly, and can not detect each working pump of the shield machine timely.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a remove detection device for detecting shield constructs quick-witted pump has realized carrying out on-line monitoring to each shield and constructs quick-witted working pump under shield constructs quick-witted off-state, has avoided detection mode waste time and manpower that mentions among the prior art, can not be timely detect each working pump to the shield structure machine.
The technical scheme of the utility model as follows:
the utility model provides a shield constructs construction and uses mobile detection station, is including installing the container on the trailer, sets up the baffle in the container and divide into two work areas with the container, places respectively in its two work areas and is used for detecting whether each working pump of shield constructs the machine accords with the mobile detection device and the oil appearance check out test set of regulation standard, and be provided with two doors on the container, two doors of accessible get into two work areas respectively. The movable detection device and the oil sample detection equipment are arranged in different areas through the partition plate, the oil leakage of the movable detection device is effectively avoided, the area where the oil sample detection equipment is arranged is polluted, two doors are arranged on the container and correspond to the two working areas respectively, and the two working areas are enabled not to interfere with each other.
The oil sample detection equipment adopts the oil sample detection equipment in the prior art to detect.
Furthermore, an integral door is arranged at the top of a container working area provided with the movement detection device, so that the movement detection device is conveniently lifted out of the container.
Still further, two doors that set up on the container, the door that its removal detection device work area corresponds is two opening doors, and under the inconvenient condition of lifting this station out through the form of hoist and mount, accessible fork truck transports removal detection device out, and the door that its oil appearance check out test set work area corresponds is standard container door to set up the window on this oil appearance check out test set work area's container, guarantee its inside air current connectivity.
Still further, the oil discharge grooves are formed in two sides of the placement area of the mobile detection device, so that oil leaked by the mobile detection device is prevented from remaining at an included angle of the container, and the tidiness of the working area for placing the mobile detection device is guaranteed.
Preferably, the stainless steel plate is laid on the ground of a working area where the mobile detection device is placed in the container, and because the mobile detection device can cause oil leakage, the stainless steel plate is installed to facilitate cleaning of the ground, and corrosion cannot occur after the oil leakage.
Furthermore, a support is arranged on the wall of the container body of the container working area where the oil sample detection equipment is located and used for installing an air conditioner internal unit, and an air conditioner external unit is arranged on the outer wall of the container body.
Still further, be provided with the cat ladder on the box outer wall of container, the staff of being convenient for arrives the container top and carries out relevant operation when hoist and mount movement detection device.
The utility model provides a remove detection device for detecting shield structure machine pump, be provided with an at least detection pipeline on removing detection device, the oil feed end of every detection pipeline is provided with a plurality of interfaces for it matches the interface end of each work pump oil outlet of shield structure machine respectively, the oil feed end of detection pipeline is gone out the oil end and is installed proportion overflow valve, flowmeter, pressure sensor, temperature sensor and filter in proper order to the oil feed end, and the oil end that detects the pipeline is provided with the interface of being connected with the oil tank remove detection device is last to be provided with many oil return pipelines the oil feed end of oil return pipeline is provided with the interface that is connected with the draining port or the integrated piece oil return opening of each shield structure machine work pump, and the oil end of its oil return pipeline is provided with the interface that is connected with.
Furthermore, a water-cooling radiator is further installed between the filter and the oil outlet end of the detection pipeline, the water-cooling radiator is connected into the external circulating water system of the shield machine, and a water source is continuously provided for the water-cooling radiator through an external circulating water pump, so that the oil of the hydraulic system is cooled. And a pressure gauge, a thermometer and a flowmeter are arranged on a detection pipeline connected with the oil outlet end of the water-cooling radiator. Because the power consumed by the pump is completely used for heating the oil, the optimal working temperature of the oil of the hydraulic system is between 30 and 50 ℃, and a water-cooling radiator needs to be arranged in the system.
Still further, a branch pipeline is further arranged on the detection pipeline connected with the oil outlet of the water-cooling radiator, and the branch pipeline is connected to the detection pipeline between the proportional overflow valve and the oil inlet end of the detection pipeline.
Still further, still be connected with a spare pipeline on the branch pipeline, spare pipeline converges with the oil supplementing pipeline again to be provided with many oil supplementing branch roads in the confluence of oil supplementing pipeline and spare pipeline, and be in install the ball valve on the spare pipeline, install oil supplementing pump and filter on the oil supplementing pipeline, the oil inlet of its oil supplementing pump is provided with the interface of being connected with the oil tank, spare pipeline combines many oil supplementing branch roads and is used for guaranteeing that the shield constructs the machine and examines each working pump normal work when the machine detects in the shut down state. For example when detecting the closed pump, the shield constructs the machine and is in the off-state, nevertheless need cool off shield structure owner bearing, consequently is guaranteeing to be carried out the state basis of flushing work to shield structure owner bearing by the test pump on the spare pipeline with mend the confluence department of oil pipeline and set up many branch roads of meneing oil for it can normally work by the test pump, is about to be connected with a branch road of meneing oil by the bearing washing U mouth of test pump, will be connected by the branch road of meneing oil E mouth and another branch road of meneing oil of test pump again, thereby has realized the normal work by the test pump.
Preferably, the filter is provided with pressure difference feedback, so that the alarm can be given when the filter is blocked, the filter replacement is prompted, and the normal operation of the system is ensured.
Furthermore, a ball valve is arranged on the pipeline from the water-cooled radiator to the oil outlet end of the detection pipeline, an overflow pipeline is connected in parallel to the detection pipeline from the oil inlet end of the ball valve to the oil outlet end of the ball valve, and an overflow valve is arranged on the overflow pipeline.
Still further, still be provided with an oil injection pipeline on the removal detection device, oil injection pipeline one end is provided with the interface of being connected with the oil tank to be provided with ball valve and oiling pump on the oil injection pipeline, the pipeline that oiling pump oil outlet end is connected divide into two tributary oil injection pipelines, be provided with the proportion relief pressure valve on one of them tributary oil injection pipeline, and be provided with 4 reposition of redundant personnel pipelines at the oil outlet end of proportion relief pressure valve, its 4 reposition of redundant personnel all are provided with the interface of being connected with closed pump X1 and X2 mouth on the road, can wherein two reposition of redundant personnel pipelines are connected with the X1 and the X2 mouth of closed pump when detecting closed pump, make the accessible control closed pump's discharge capacity through the proportion relief pressure valve.
The utility model has the advantages that: 1. the utility model discloses a set up the container on the trailer, place removal detection device and oil appearance check out test set in the container for its accessible trailer transports whole device to the ground that the shield constructs the construction place, has avoided needing long-distance transport oil appearance and each working pump of shield structure machine to detect to the laboratory, causes waste time and manpower.
2. The utility model discloses a to remove the detection device handling to shield in the construction area for carry out on-line measuring to each working pump of shield structure machine under shield structure machine off state, and satisfy the normal operating condition of shield structure machine each working pump under off state.
3. The oil detection equipment and the mobile detection device are divided into two working areas by arranging the partition plates in the container, so that oil leakage of the mobile detection device is avoided and the oil enters the area where the oil detection equipment is located, and the two areas are not interfered with each other.
Drawings
Fig. 1 is a plan view of the layout of the container of the present invention;
fig. 2 is a side view of the layout of the container of the present invention;
FIG. 3 is a schematic diagram of the system of the mobile detection device of the present invention;
description of reference numerals: 1. a container; 2. an oil sample detection device; 3. a movement detection device; 4. a partition plate; 5. a standard container door; 6. double doors are opened; 7. an air conditioner outdoor unit; 8. climbing a ladder; 9. a window; 10. an air conditioner indoor unit; 11. detecting a pipeline; 12. an oil tank; 13. a standby pipeline; 14. an oil supplementing pipeline; 15. an oil supplementing branch; 16. an overflow line; 17. an oil return line; 18. detecting the oil inlet end of the pipeline; 19. a branch pipeline; 20. an oil injection pipeline; 21. a shunt line; 22. a branch flow oil injection pipeline.
Detailed Description
The invention is further described with reference to the accompanying drawings.
It is right to see fig. 1 to 3 the utility model discloses a shield constructs construction and carries out detailed description with mobile detection station, a shield constructs construction and uses mobile detection station, including installing container 1 on the trailer, set up baffle 4 in container 1 and divide into two work areas with container 1, placed respectively in its two work areas and be used for detecting whether each working pump of shield constructs machine accords with the mobile detection device 3 and the oil appearance check out test set 2 of regulation standard, and be provided with two doors on container 1, two doors of accessible get into two work areas respectively. Install different regions with mobile detection device 3 and oil appearance check out test set 2 through baffle 4, the effectual 3 fluid of having avoided mobile detection device reveals and pollutes the region that oil appearance check out test set 2 installed to set up two doors on container 1, correspond two work areas respectively, make two work areas mutually noninterfere.
The oil sample detection device 2 adopts the oil sample detection device 2 in the prior art to detect.
Further, an integral door is arranged at the top of the working area of the container 1 provided with the movement detection device 3, so that the movement detection device 3 can be conveniently lifted out of the container 1.
Still further, two doors that set up on container 1, the door that its mobile detection device 3 work area corresponds is two opening doors 6, and under the inconvenient condition of hanging out this station through the form of hoist and mount, accessible fork truck transports mobile detection device 3 out, and the door that its oil appearance check out test set 2 work area corresponds is standard container door 5 to set up window 9 on this oil appearance check out test set 2 work area's container 1, guarantee its inside air circulation nature.
Still further, the oil discharge grooves are formed in two sides of the placement area of the mobile detection device 3, so that oil leaked by the mobile detection device 3 is prevented from remaining at an included angle of the container 1, and the tidiness of the working area for placing the mobile detection device 3 is guaranteed.
Preferably, the stainless steel plate is laid on the ground of the working area where the mobile detection device 3 is placed in the container 1, because the mobile detection device 3 may have the condition of oil leakage, the stainless steel plate is installed to facilitate cleaning the ground, and the corrosion can not occur after the oil leakage.
Further, a bracket is mounted on the wall of the container body of the working area of the container 1 where the oil sample detection device 2 is located, and is used for mounting an air conditioner internal unit 10, and an air conditioner external unit 7 is mounted on the outer wall of the container body of the container 1.
Still further, a ladder 8 is arranged on the outer wall of the container body of the container 1, so that when the mobile detection device 3 is hoisted, a worker can conveniently reach the top of the container 1 to perform related operations.
The utility model provides a remove detection device for detecting shield structure machine pump, be provided with at least one detection pipeline 11 on removing detection device 3, the oil feed end of every detection pipeline 11 is provided with a plurality of interfaces for it matches the interface end of each work pump oil-out of shield structure machine respectively, proportional overflow valve, flowmeter, pressure sensor, temperature sensor and filter are installed in proper order to the oil feed end of detection pipeline 11 to the oil-out end, and the oil-out end of detection pipeline 11 is provided with the interface of being connected with oil tank 12 remove detection device 3 is last to be provided with many oil return pipelines 17 the oil feed end of oil return pipeline 17 is provided with the interface that is connected with the draining port or the integrated piece oil return opening of each shield structure machine work pump, and the oil-out end of its oil return pipeline 17 is provided with the interface that is connected with oil tank 12.
Further, still install water-cooling radiator between the filter and the end that produces oil of detection pipeline 11, its water-cooling radiator inserts the outer circulating water system of shield machine, continues to provide the water source to water-cooling radiator through outer circulating water pump to the cooling to hydraulic system fluid has been realized. And a pressure gauge, a thermometer and a flowmeter are arranged on the detection pipeline 11 connected with the oil outlet end of the water-cooling radiator. Because the power consumed by the pump is completely used for heating the oil, the optimal working temperature of the oil of the hydraulic system is between 30 and 50 ℃, and a water-cooling radiator needs to be arranged in the system.
Still further, a branch pipeline 19 is further arranged on the detection pipeline 11 connected with the oil outlet of the water-cooled radiator, and the branch pipeline 19 is connected to the detection pipeline 11 between the proportional overflow valve and the oil inlet end of the detection pipeline 11.
Still further, still be connected with a spare pipeline 13 on tributary pipeline 19, spare pipeline 13 converges with oil supply pipeline 14 again, and be provided with many oil supply branch road 15 at the confluence of oil supply pipeline 14 and spare pipeline 13, and install the ball valve on the spare pipeline 13, install oil supply pump and filter on the oil supply pipeline 14, the oil inlet of its oil supply pump is provided with the interface of being connected with oil tank 12, spare pipeline 13 combines many oil supply branch road 15 to be used for guaranteeing that the shield constructs the machine and examines each working pump normal work when the machine detects in the machine-stopped state. For example when detecting the closed pump, the shield constructs the machine and is in the off-state, but need cool off shield structure owner bearing, consequently guarantee by the test pump to shield structure owner bearing carry out flushing work's state basis on the utility model discloses set up many branch roads 15 of mending oil in reserve pipeline 13 and the confluence department of mending oil pipeline 14 for it can normally work by the test pump, and the bearing that is about to be tested the pump washes U mouth and is mended oil branch road 15 and be connected, will again by the benefit oil E mouth of test pump and another branch road 15 of mending oil be connected, thereby has realized the normal work by the test pump.
Preferably, the filter is provided with pressure difference feedback, so that the alarm can be given when the filter is blocked, the filter replacement is prompted, and the normal operation of the system is ensured.
Further, a ball valve is installed on the pipeline from the water-cooled radiator to the oil outlet end of the detection pipeline 11, an overflow pipeline 16 is connected in parallel to the detection pipeline 11 from the oil inlet end of the ball valve to the oil outlet end of the ball valve, and an overflow valve is installed on the overflow pipeline 16.
Still further, still be provided with an oil injection pipeline 20 on the removal detection device, oil injection pipeline 20 one end is provided with the interface of being connected with oil tank 12 to be provided with ball valve and oiling pump on oiling pipeline 20, the pipeline that oiling pump oil outlet end is connected divide into two branch flow oil injection pipelines 22, be provided with the proportion relief pressure valve on one of them branch flow oil injection pipeline 22, and be provided with 4 reposition of redundant personnel pipelines 21 at the oil outlet end of proportion relief pressure valve, all be provided with the interface of being connected with closed pump X1 and X2 mouth on its 4 reposition of redundant personnel pipelines 21, can wherein two reposition of redundant personnel pipelines 21 are connected with the X1 and the X2 mouth of closed pump when detecting closed pump for the accessible controls the discharge capacity of closed pump through the proportion relief pressure valve.
With reference to fig. 3, the mobile detecting device 3 of the present invention is described in detail by detecting the open pump and the closed pump.
The detection steps of the start-up pump are as follows:
1. connecting the oil pressure pipeline of the pump to be tested with any one of the interfaces at the oil inlet end 18 of the detection pipeline of the mobile detection device 3, and sealing the rest interfaces by a blocking plate after the connection is finished;
2. the oil suction pipeline of the tested pump is connected with the oil tank 2.
3. The leakage oil L port or the return oil T port of the integrated block of the pump to be tested is respectively connected with an oil return pipeline 17 of the mobile detection device 3;
4. detecting whether the relevant pipelines are connected or not and whether leakage exists or not;
5. connecting the water-cooled radiator with an external circulating water system of the shield machine;
6. opening the ball valve, closing the ball valve arranged on the standby pipeline 13, and ensuring the oil path to be smooth or to be communicated;
7. starting an external circulating water pump of the shield machine;
8. starting a pump motor to be tested;
9. operating a pressure adjusting button on the upper computer interface of the detection vehicle to adjust the proportional overflow valve;
10. the upper computer records the pressure values of 10%, 25%, 50%, 65%, 80% and 100% under the maximum pressure of the pump to be measured, and simultaneously records the flow values flowing through the flowmeter under the corresponding pressures.
11. Automatically generating a pressure flow curve of the pump to be tested on the upper computer;
12. comparing a pressure flow curve automatically generated on the upper computer with a pressure flow curve provided by original technical data of the pump;
13. according to the error analysis, a detection report is issued;
14. and according to the detection report, giving a maintenance guidance scheme of the tested pump.
The closed pump operation step:
1. connecting the working pipeline of the tested pump with any two interfaces of the oil inlet end 18 of the detection pipeline respectively, and plugging the other interfaces by using plugging plates after the connection is finished;
2. connecting a bearing washing U port of a pump to be tested with an oil supplementing branch 15;
3. connecting the oil supplementing E port of the tested pump with the other oil supplementing branch 15;
4. connecting the port R of the pump to be tested with any one oil return pipeline 17 of the mobile detection device;
5. connecting the port K of the pump to be tested with the other oil return pipeline 17 of the mobile detection device;
6. connecting the water-cooled radiator with an external circulating water system of the shield machine;
7. closing a ball valve on the detection pipeline, and opening a ball valve arranged on the standby pipeline to ensure that an oil way is smooth or a passage is ensured;
8. detecting whether the relevant pipelines are connected or not and whether leakage exists or not;
9. starting an external circulating water pump of the shield machine;
10. starting an oil supplementing pump connected with the oil tank on the mobile detection equipment;
11. starting a pump motor to be tested;
12. operating a pressure adjusting button on the upper computer interface of the detection vehicle to control the proportional overflow valve;
13. the upper computer records the pressure values of 10%, 25%, 50%, 65%, 80% and 100% of the maximum pressure of the pump to be measured, and simultaneously records the flow value of the flowmeter under the corresponding pressure.
14. Automatically generating a pressure flow curve of the pump to be tested on the upper computer;
15. comparing a pressure flow curve automatically generated on the upper computer with a pressure flow curve provided by original technical data of the pump;
16. according to the error analysis, a detection report is issued;
17. and according to the detection report, giving a maintenance guidance scheme of the tested pump.
On the basis of the closed pump operation steps, when the closed pump is detected, ports X1 and X2 of the closed pump can be connected with a shunt pipeline, so that the displacement of the closed pump can be controlled through a proportional pressure reducing valve.
Claims (7)
1. A mobile detection device for detecting a shield machine pump is characterized in that at least one detection pipeline (11) is arranged on the mobile detection device (3), the oil inlet end of each detection pipeline (11) is provided with a plurality of interfaces, so that the interfaces are respectively matched with the interface ends of the oil outlets of the working pumps of the shield machine, a proportional overflow valve, a flowmeter, a pressure sensor, a temperature sensor and a filter are sequentially arranged from the oil inlet end to the oil outlet end of the detection pipeline (11), the oil outlet end of the detection pipeline (11) is provided with a connector connected with an oil tank (12), a plurality of oil return pipelines (17) are arranged on the mobile detection device (3), the oil inlet end of each oil return pipeline (17) is provided with a connector connected with the oil drain port or the manifold block oil return port of each shield machine working pump, the oil outlet end of the oil return pipeline (17) is provided with a connector connected with the oil tank (12).
2. The mobile detection device for detecting the pump of the shield tunneling machine according to claim 1, wherein a water-cooled radiator is further installed between the filter and the oil outlet end of the detection pipeline (11), the water-cooled radiator is connected to an external circulating water system of the shield tunneling machine, and water is continuously supplied to the water-cooled radiator through the external circulating water pump.
3. The movement detection device for detecting the shield tunneling machine pump according to claim 2, characterized in that a branch pipeline (19) is further divided on the detection pipeline (11) connected with the oil outlet of the water-cooled radiator, and the branch pipeline (19) is connected to the detection pipeline (11) between the proportional overflow valve and the oil inlet end of the detection pipeline (11).
4. The mobile detection device for detecting the pump of the shield tunneling machine according to claim 3, wherein a spare pipeline (13) is further connected to the branch pipeline (19), the spare pipeline (13) is converged with the oil supplementing pipeline (14), a plurality of oil supplementing branches (15) are arranged at the convergence position of the oil supplementing pipeline (14) and the spare pipeline (13), a ball valve is installed on the spare pipeline (13), an oil supplementing pump and a filter are installed on the oil supplementing pipeline (14), an oil inlet of the oil supplementing pump is provided with an interface connected with the oil tank (12), and the spare pipeline (13) is combined with the plurality of oil supplementing branches (15) to ensure that the working pumps work normally when the shield tunneling machine detects the working pumps in a shutdown state.
5. The movement detection device for detecting the pump of the shield tunneling machine according to claim 1, wherein the filter is a filter with differential pressure feedback.
6. The mobile testing device for testing the pump of the shield tunneling machine according to any one of claims 2 to 5, characterized in that a ball valve is installed on the pipeline from the water-cooled radiator to the oil outlet end of the testing pipeline (11), an overflow pipeline (16) is connected in parallel on the testing pipeline (11) from the oil inlet end of the ball valve to the oil outlet end of the ball valve, and an overflow valve is installed on the overflow pipeline (16).
7. The mobile detection device for detecting the shield machine pump according to claim 6, wherein an oil injection pipeline (20) is further disposed on the mobile detection device (3), one end of the oil injection pipeline (20) is provided with a connector connected to the oil tank (12), a ball valve and an oil injection pump are disposed on the oil injection pipeline (20), the pipeline connected to the oil outlet end of the oil injection pump is divided into two branch oil injection pipelines (22), one branch oil injection pipeline (22) is provided with a proportional pressure reducing valve, 4 branch pipelines (21) are disposed at the oil outlet end of the proportional pressure reducing valve, and the 4 branch pipelines (21) are provided with connectors connected to the ports of the closed pumps X1 and X2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920655510.0U CN209858196U (en) | 2019-05-09 | 2019-05-09 | Mobile detection device for detecting shield machine pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920655510.0U CN209858196U (en) | 2019-05-09 | 2019-05-09 | Mobile detection device for detecting shield machine pump |
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| CN209858196U true CN209858196U (en) | 2019-12-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031201A (en) * | 2019-05-09 | 2019-07-19 | 中铁工程服务有限公司 | It is a kind of for detecting the motion detection device of shield pump |
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2019
- 2019-05-09 CN CN201920655510.0U patent/CN209858196U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031201A (en) * | 2019-05-09 | 2019-07-19 | 中铁工程服务有限公司 | It is a kind of for detecting the motion detection device of shield pump |
| CN110031201B (en) * | 2019-05-09 | 2024-03-19 | 中铁工程服务有限公司 | A remove detection device for detecting shield constructs quick-witted pump |
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