CN218376831U - Deep well drainage system - Google Patents
Deep well drainage system Download PDFInfo
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- CN218376831U CN218376831U CN202222009976.8U CN202222009976U CN218376831U CN 218376831 U CN218376831 U CN 218376831U CN 202222009976 U CN202222009976 U CN 202222009976U CN 218376831 U CN218376831 U CN 218376831U
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Abstract
The utility model discloses a deep well drainage system mainly solves deep well drainage and needs manual operation, leads to the water pump to open and stop untimely problem, and this application passes through the cooperation of floater and automatic control module, realizes the ponding water level automatic control water pump subassembly drainage according to the floater feedback, need not artifical guard, and the drainage is timely. The utility model discloses a main technical scheme does: a deep well drainage system comprises a floating ball component, a water pump component, an automatic control module and a manual control module; the floating ball assembly is electrically connected with the automatic control module, the water pump assembly is electrically connected with the automatic control module, and the manual control module is electrically connected with the water pump assembly; the floating ball assembly is used for being arranged in the deep well, and the water pump assembly is used for discharging accumulated water in the deep well. The utility model discloses mainly used deep well drainage.
Description
Technical Field
The utility model relates to a deep well drainage technical field especially relates to a deep well drainage system.
Background
A lot of factories and mines all have the deep well, and the space is narrow and small in the well and does not have the cat ladder, do not have the illumination, and personnel go down the difficulty, after inside storage ponding, be difficult for upwards extracting. Such deep wells are also present in marine pumping houses of nuclear power plants.
During the overhaul period of the nuclear power plant, the flashboards are generally put into 6 (possibly more in part of the power plant) deep wells of about 30 meters in the seawater pump room on the next day of the overhaul so as to prevent the seawater from continuously flowing in. After the pump house flashboard was put down, put into two immersible pumps in every deep well under the normal condition and upwards take out well ponding, nevertheless because the flashboard has the condition that can't be totally enclosed, the sea water can leak to the deep well in, to work production influence, so need install the immersible pump and draw water to a week before the overhaul end always according to the leakage condition.
According to the prior art, after the submersible pump is placed, two groups (2 people in each group) or more than two groups of people need to be arranged to change shift alternately, 24-hour duty patrol and squat are carried out, visual observation is carried out from the upper part of a deep well through a highlight flashlight, the submersible pump is started by a mechanical control box to pump water when the liquid level reaches a certain height according to the past experience, and the pump is stopped manually when the liquid level is low according to the experience.
Because the deep well is about 30 meters deep and has no illumination inside, and the deep well is provided with the fine grid type cover plate, the internal local environment can only be roughly observed by the highlight flashlight, so that the naked eye cannot accurately observe the local environment. If the submersible pump cannot be started accurately at a certain liquid level (the liquid level can flow into a related system when the liquid level is high), the maintenance equipment and personnel are injured; when the liquid level is too low, the submersible pump is burnt out because a person does not stop the pump in time; because these 6 deep wells are not in same one deck, the personnel on duty need make a round trip to patrol and examine, and the personnel on duty all can cause liquid level or height or low phenomenon because the sleepy reason such as observing untimely night, simultaneously also causes the manpower extravagant owing to on duty.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a deep well drainage system mainly solves deep well drainage and needs manual operation, leads to the water pump to open and stop untimely problem, and this application passes through floater and automatic control module cooperation, realizes the ponding water level automatic control water pump subassembly drainage according to the floater feedback, need not artifical guard, and the drainage is timely.
In order to achieve the above object, the present invention mainly provides the following technical solutions:
an embodiment of the utility model provides a deep well drainage system, include:
the automatic control system comprises a floating ball assembly (100), a water pump assembly (200), an automatic control module (300) and a manual control module (400);
the floating ball assembly (100) is electrically connected with the automatic control module (300), the water pump assembly (200) is electrically connected with the automatic control module (300), and the manual control module (400) is electrically connected with the water pump assembly (200);
the floating ball assembly (100) is arranged in the deep well, and the water pump assembly (200) is used for discharging accumulated water in the deep well.
The floating ball assembly (100) further comprises a heavy hammer (130) and a connecting rope (140), the heavy hammer (130) is connected with one end of the connecting rope (140), and the other end of the connecting rope (140) is connected with the floating ball assembly (100).
The floating ball assembly (100) comprises a first floating ball (110) and a second floating ball (120), and the first floating ball (110) and the second floating ball (120) are respectively electrically connected with the automatic control module (300);
the water pump assembly (200) comprises a first water pump (210), a second water pump (220) and a water drainage pipe assembly (230), the first water pump (210) and the second water pump (220) are both positioned in the deep well, the first water pump (210) and the second water pump (220) are respectively and electrically connected with the automatic control module (300), and the first water pump (210) and the second water pump (220) are respectively and electrically connected with the manual control module (400);
the drain pipe assembly (230) comprises a first end, a second end and a drain end, the first end is connected with the first water pump (210), the second end is connected with the second water pump (220), and the drain end is positioned outside the deep well;
the first floating ball (110) and the second floating ball (120) are located at different heights in the deep well, and the first water pump (210) and the second water pump (220) are used for discharging accumulated water through the water drainage pipe assembly (230).
Wherein the automatic control module (300) comprises a first intermediate relay (310), a second intermediate relay (320), a first AC contactor (330) and a second AC contactor (340);
the first intermediate relay (310) is electrically connected with the first floating ball (110) and the first alternating current contactor (330) respectively, and the first alternating current contactor (330) is electrically connected with the first water pump (210);
the second intermediate relay (320) is electrically connected with the second floating ball (120) and the second alternating current contactor (340) respectively, and the second alternating current contactor (340) is electrically connected with the second water pump (220).
The automatic control module (300) further comprises an isolation transformer (350), the isolation transformer (350) is used for being electrically connected with the power supply (500), and the isolation transformer (350) is electrically connected with the first intermediate relay (310) and the second intermediate relay (320) respectively.
The automatic control module (300) further comprises a first monitoring indicator lamp (360) and a second monitoring indicator lamp (370), the first monitoring indicator lamp (360) is electrically connected with the first intermediate relay (310), and the second monitoring indicator lamp (370) is electrically connected with the second intermediate relay (320).
The manual control module (400) comprises a first manual switch (410) and a second manual switch (420), the first manual switch (410) is electrically connected with the power supply (500) and the first water pump (210) respectively, and the second manual switch (420) is electrically connected with the power supply (500) and the second water pump (220) respectively.
The first floating ball (110) and the second floating ball (120) are floating balls with cables, and the overlapping area of the cables of the first floating ball (110) and the cables of the second floating ball (120) is bound by fasteners.
The floating ball assembly (100) further comprises a supporting rod, the first floating ball (110) and the second floating ball (120) are floating balls with cables, and the cables of the first floating ball (110) and the cables of the second floating ball (120) are connected with the supporting rod through fasteners respectively.
The first floating ball (110) is higher than the second floating ball (120), and the height difference between the first floating ball (110) and the second floating ball (120) is greater than or equal to 0.4 m and less than or equal to 0.6 m.
The embodiment of the utility model provides a deep well drainage system mainly solves deep well drainage and needs artifical guard and operation, leads to the water pump to open and stop untimely problem, and this application passes through the cooperation of floater and automatic control module, realizes the ponding water level automatic control water pump subassembly drainage according to the floater feedback, need not artifical guard, and the drainage is timely. Among the prior art, need arrange two personnel and observe the ponding water level in turn, when the ponding water level reachd the take the altitude, utilize manual control to start the immersible pump and draw water, the manual work stops the pump when the ponding water level is low, but the deep well is observed inaccurately, and the immersible pump opens and stops untimely, leads to ponding can not in time discharge or lead to the immersible pump idle running, and extravagant manpower. Compared with the prior art, in this application file, utilize the floater subassembly to arrange in the deep well and detect the water level, whether surpass the floater according to the water level, automatic control module opens the water pump assembly automatically, realizes carrying out the drainage according to ponding water level accurate control water pump assembly, realizes timely drainage and in time the pump stopping, and still carries out water pump assembly's manual control through manual control module, realizes the flexibility of water pump assembly control.
Drawings
Fig. 1 is a schematic structural diagram of a deep well drainage system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another deep well drainage system according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments of the deep well drainage system according to the present invention.
As shown in fig. 1, an embodiment of the present invention provides a deep well drainage system, including:
the automatic control system comprises a floating ball assembly (100), a water pump assembly (200), an automatic control module (300) and a manual control module (400);
the floating ball assembly (100) is electrically connected with the automatic control module (300), the water pump assembly (200) is electrically connected with the automatic control module (300), and the manual control module (400) is electrically connected with the water pump assembly (200);
the floating ball assembly (100) is arranged in the deep well, and the water pump assembly (200) is used for discharging accumulated water in the deep well.
The float ball assembly (100) can also be called as a float switch and generally comprises a float and a cable, wherein the float comprises a floatable shell and can turn over up and down under the action of accumulated water, a microswitch and a steel ball are arranged in the shell, when the float turns over due to water level change, the steel ball rolls in the shell, if the water level rises, the float turns over upwards, the steel ball triggers the microswitch to act and sends out a detection signal, and when the water level drops, the float turns over downwards, the steel ball is separated from the microswitch, and the signal stops. The automatic control module (300) is electrically connected with the floating ball assembly (100), and the water level can be judged to exceed the floater according to the detection signal sent by the floating ball assembly (100), so that the floater overturns, and the water pump assembly (200) is controlled to start at the moment to drain deep wells. The water pump assembly (200) may be embodied as a submersible pump, and is disposed in the deep well near the bottom of the well, from which accumulated water is discharged out of the well through the drain assembly (230). The automatic control module (300) is used for starting the water pump assembly (200) when receiving a detection signal of the floating ball assembly (100) and stopping the water pump assembly (200) when the signal disappears, and the functions of the automatic control module (300) can be realized through the combination of electric switches, which will be described in detail below and aims to realize the automatic start and stop of the water pump assembly (200). The manual control module (400) is connected to the water pump assembly (200), can manually start and stop the water pump assembly (200), if when the height of the ponding water level is temporarily adjusted, the manual control mode can be adopted to start and stop the water pump assembly (200), and flexible control and temporary adjustment of the water pump assembly (200) are realized.
The embodiment of the utility model provides a deep well drainage system mainly solves deep well drainage and needs artifical guard and operation, leads to the water pump to open and stop untimely problem, and this application passes through the cooperation of floater and automatic control module, realizes the ponding water level automatic control water pump subassembly drainage according to the floater feedback, need not artifical guard, and the drainage is timely. Among the prior art, need arrange two personnel and observe the ponding water level in turn, when the ponding water level reachd a take the altitude, utilize manual control to start the immersible pump and draw water, the artifical pump that stops when the ponding water level is low, nevertheless the deep well is observed inaccurately, and the immersible pump opens and stops untimely, leads to ponding can not in time discharge or lead to the immersible pump idle running, and extravagant manpower. Compared with the prior art, in this application file, utilize the floater subassembly to arrange in the deep well and detect the water level, whether surpass the floater according to the water level, automatic control module opens the water pump assembly automatically, realizes carrying out the drainage according to ponding water level accurate control water pump assembly, realizes timely drainage and in time the pump stopping, and still carries out water pump assembly's manual control through manual control module, realizes the flexibility of water pump assembly control.
In order to ensure the stability of the floating ball component (100) in accumulated water, namely, only the floater overturns under the action of the accumulated water, but the cable cannot drive the floater to float in the accumulated water, the floating ball component (100) also comprises a heavy hammer (130) and a connecting rope (140), the heavy hammer (130) is connected with one end of the connecting rope (140), and the other end of the connecting rope (140) is connected with the floating ball component (100).
The connecting rope (140) can be a nylon rope with the diameter of 6 mm, one end of the connecting rope can be fixed with a wellhead, a cable of the floating ball component (100) is bound on the nylon rope, the other end of the connecting rope is connected with the heavy hammer (130), and the heavy hammer (130) can be heavy objects such as steel balls.
In one embodiment, as shown in fig. 1, the float assembly (100) includes a first float (110) and a second float (120), and the first float (110) and the second float (120) are electrically connected to the automatic control module (300), respectively. The water pump assembly (200) comprises a first water pump (210), a second water pump (220) and a water drainage pipe assembly (230), the first water pump (210) and the second water pump (220) are both located in the deep well, the first water pump (210) and the second water pump (220) are electrically connected with the automatic control module (300) respectively, and the first water pump (210) and the second water pump (220) are electrically connected with the manual control module (400) respectively. The drain pipe assembly (230) comprises a first end, a second end and a drain end, wherein the first end is connected with the first water pump (210), the second end is connected with the second water pump (220), and the drain end is positioned outside the deep well. The first floating ball (110) and the second floating ball (120) are positioned at different heights in a deep well, and the first water pump (210) and the second water pump (220) are used for discharging accumulated water through the water drainage pipe assembly (230).
The floater of first floater (110) is located the below of first ponding water level in the deep well, when ponding reachd first ponding water level, will make the floater of first floater (110) just overturn, and the floater of second floater (120) is located the below of second ponding water level in the deep well, when ponding reachd second ponding water level, will make the floater of second floater (120) just overturn, and wherein, first ponding water level is higher than second ponding water level. The first water pump (210) and the second water pump (220) are both positioned at one end of the deep well close to the bottom of the well, and the first water pump (210) and the second water pump (220) are the same in height. The water drainage pipe assembly (230) comprises a main pipeline and two branch pipelines, the two branch pipelines are respectively connected with the first water pump (210) and the second water pump (220), the two branch pipelines are connected with the main pipeline, and the main pipeline is opposite to the outside of the deep well and discharges accumulated water. In the accumulated water rising process, when the accumulated water level reaches the second accumulated water level, the floater of the second floating ball (120) turns over due to the water level, the internal micro switch acts and is communicated, the detection signal is transmitted to the automatic control module (300), and the automatic control module (300) controls the first water pump (210) to pump water. When the ponding water level reaches the first ponding water level, the floater of the first floating ball (110) turns over due to the water level, the internal micro switch acts and is communicated, the detection signal is transmitted to the automatic control module (300), the automatic control module (300) controls the second water pump (220) to start pumping water, namely when the ponding water level reaches the first higher ponding water level, the two water pumps pump water simultaneously. In the drainage process, when the liquid level is lower than the first accumulated water level and the floater of the first floating ball (110) overturns due to the water level, the internal micro switch is turned off, and the automatic control module (300) controls the second water pump (220) to stop pumping water. When the liquid level continues to fall to be lower than the second accumulated water level, and the floater of the second floating ball (120) overturns due to the water level, the internal microswitch is switched off, the automatic control module (300) controls the first water pump (210) to stop pumping water, namely, when the accumulated water level is lower than the lower second accumulated water level, the two water pumps stop pumping water simultaneously, and the water pumps are prevented from idling. Through two floater and two water pumps, realize carrying out the control of drainage speed according to the volume of ponding, avoid the water pump to start and stop repeatedly and the untimely phenomenon of drainage.
The setting position and the distance between the first floating ball (110) and the second floating ball (120) can be determined according to field conditions, such as well depth, average rising speed of accumulated water, drainage performance of a water pump and the like, for example, in a deep well with the depth of 25-30 meters, the height difference between the first floating ball (110) and the second floating ball (120) is more than or equal to 0.4 meter and less than or equal to 0.6 meter, and for example, the height difference between the first floating ball (110) and the second floating ball (120) is 0.5 meter.
The automatic control module (300) is configured to control start and stop of the first water pump (210) and the second water pump (220) according to detection signals of the first floating ball (110) and the second floating ball (120), and the manner for realizing this function may be multiple, for example, in an embodiment, as shown in fig. 2, the automatic control module (300) includes a first intermediate relay (310), a second intermediate relay (320), a first ac contactor (330), and a second ac contactor (340). The first intermediate relay (310) is electrically connected with the first floating ball (110) and the first alternating current contactor (330) respectively, and the first alternating current contactor (330) is electrically connected with the first water pump (210). The second intermediate relay (320) is electrically connected with the second floating ball (120) and the second alternating current contactor (340) respectively, and the second alternating current contactor (340) is electrically connected with the second water pump (220).
Taking the control of the first floating ball (110) as an example, when the water level of accumulated water gradually rises, after the first floating ball (110) overturns due to the reason of the liquid level, the contact of the internal micro switch is communicated, a detection signal is sent out, or a level signal is sent to the first intermediate relay (310), the first intermediate relay (310) is triggered to close the coil of the first alternating current contactor (330), and the main contact of the first alternating current contactor (330) acts to control the first water pump (210) to pump water. When the accumulated water level gradually drops, after the first floating ball (110) overturns due to the liquid level, the contact of the internal micro switch is disconnected, the coil of the first alternating current contactor (330) is disconnected by the first intermediate relay (310), and the main contact of the first alternating current contactor (330) acts to stop the first water pump (210) from pumping water.
In one embodiment, the automated control module (300) further comprises an isolation transformer (350), the isolation transformer (350) is configured to be electrically connected to the power source (500), and the isolation transformer (350) is electrically connected to the first intermediate relay (310) and the second intermediate relay (320), respectively.
The first intermediate relay (310) is electrically connected with the power supply (500) through the isolation transformer (350), and when the coil of the first alternating current contactor (330) is closed, the power supply (500) supplies power to the first water pump (210) through the isolation transformer (350), so that the first water pump (210) starts to pump water. The second intermediate relay (320) is electrically connected with the power supply (500) through the isolation transformer (350), and when the coil of the second alternating current contactor (340) is closed, the power supply (500) supplies power to the second water pump (220) through the isolation transformer (350), so that the second water pump (220) starts to pump water. The isolation transformer (350) converts the voltage from 380V to 24V, thereby solving the electric shock phenomenon caused by water leakage of the floating ball in water and ensuring the use safety.
In one embodiment, the automatic control module (300) further comprises a first monitoring indicator light (360) and a second monitoring indicator light (370), the first monitoring indicator light (360) is electrically connected with the first intermediate relay (310), and the second monitoring indicator light (370) is electrically connected with the second intermediate relay (320).
When the first intermediate relay (310) acts, the first monitoring indicator lamp (360) is turned on to indicate that the first water pump (210) starts pumping water, and when the second intermediate relay (320) acts, the second monitoring indicator lamp (370) is turned on to indicate that the second water pump (220) starts pumping water. Through first monitoring pilot lamp (360) and second monitoring pilot lamp (370) for the water pump running state is surveyability, convenient control.
In one embodiment, the manual control module (400) includes a first manual switch (410) and a second manual switch (420), the first manual switch (410) is electrically connected to the power source (500) and the first water pump (210), respectively, and the second manual switch (420) is electrically connected to the power source (500) and the second water pump (220), respectively.
The first manual switch (410) and the second manual switch (420) are self-locking switches, and the first manual switch (410) and the second manual switch (420) are respectively used for manually controlling power supply of the first water pump (210) and the second water pump (220) so as to control starting and stopping of the first water pump (210) and the second water pump (220). If the first manual switch (410) is pressed, the first manual switch (410) is self-locked, power is continuously supplied to the first water pump (210), and the first manual switch (410) is pressed again, so that the power supply of the first water pump (210) is disconnected.
The first floating ball (110) and the second floating ball (120) are floating balls with cables, and the overlapping area of the cables of the first floating ball (110) and the cables of the second floating ball (120) is bound by fasteners.
The cable can be bound on the connecting rope (140) to avoid the cable from dragging and floating under the action of accumulated water. In one embodiment, the automatic control module (300) and the manual control module (400) are integrated on an electric cabinet, an aviation socket is arranged on the electric cabinet, the automatic control module (300) is electrically connected with the aviation socket, an aviation plug is electrically connected with a cable, and the first floating ball (110) and the second floating ball (120) are quickly connected with the automatic control module (300) by inserting the aviation plug on the aviation socket.
In addition, in some other embodiments, the floating ball assembly (100) further comprises a support rod, the first floating ball (110) and the second floating ball (120) are floating balls with cables, and the cables of the first floating ball (110) and the cables of the second floating ball (120) are respectively connected with the support rod through fasteners.
The bracing piece can be inserted the shaft bottom, and the cable of first floater (110) and second floater (120) is binded to the bracing piece on, through first floater of bracing piece restriction (110) and second floater (120), need not to use weight (130).
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A deep well drainage system, comprising:
the automatic control system comprises a floating ball assembly (100), a water pump assembly (200), an automatic control module (300) and a manual control module (400);
the floating ball assembly (100) is electrically connected with the automatic control module (300), the automatic control module (300) is electrically connected with the water pump assembly (200), and the manual control module (400) is electrically connected with the water pump assembly (200);
the floating ball assembly (100) is used for being arranged in a deep well, and the water pump assembly (200) is used for discharging accumulated water in the deep well.
2. The deep well drainage system of claim 1,
the floating ball assembly (100) further comprises a heavy hammer (130) and a connecting rope (140), the heavy hammer (130) is connected with one end of the connecting rope (140), and the other end of the connecting rope (140) is connected with the floating ball assembly (100).
3. The deep well drainage system according to claim 1,
the floating ball assembly (100) comprises a first floating ball (110) and a second floating ball (120), and the first floating ball (110) and the second floating ball (120) are respectively and electrically connected with the automatic control module (300);
the water pump assembly (200) comprises a first water pump (210), a second water pump (220) and a water drainage pipe assembly (230), the first water pump (210) and the second water pump (220) are both positioned in the deep well, the first water pump (210) and the second water pump (220) are respectively and electrically connected with the automatic control module (300), and the first water pump (210) and the second water pump (220) are respectively and electrically connected with the manual control module (400);
the drain pipe assembly (230) comprises a first end, a second end and a drain end, the first end is connected with the first water pump (210), the second end is connected with the second water pump (220), and the drain end is positioned outside the deep well;
the first floating ball (110) and the second floating ball (120) are located at different heights in the deep well, and the first water pump (210) and the second water pump (220) are used for discharging the accumulated water through the water drainage pipe assembly (230).
4. The deep well drainage system according to claim 3,
the automatic control module (300) comprises a first intermediate relay (310), a second intermediate relay (320), a first AC contactor (330) and a second AC contactor (340);
the first intermediate relay (310) is electrically connected with the first floating ball (110) and the first alternating current contactor (330) respectively, and the first alternating current contactor (330) is electrically connected with the first water pump (210);
the second intermediate relay (320) is electrically connected with the second floating ball (120) and the second alternating current contactor (340) respectively, and the second alternating current contactor (340) is electrically connected with the second water pump (220).
5. The deep well drainage system according to claim 4,
the automatic control module (300) further comprises an isolation transformer (350), the isolation transformer (350) is used for being electrically connected with a power supply (500), and the isolation transformer (350) is respectively electrically connected with the first intermediate relay (310) and the second intermediate relay (320).
6. The deep well drainage system according to claim 4,
the automatic control module (300) further comprises a first monitoring indicator lamp (360) and a second monitoring indicator lamp (370), the first monitoring indicator lamp (360) is electrically connected with the first intermediate relay (310), and the second monitoring indicator lamp (370) is electrically connected with the second intermediate relay (320).
7. The deep well drainage system according to claim 3,
the manual control module (400) comprises a first manual switch (410) and a second manual switch (420), the first manual switch (410) is electrically connected with the power supply (500) and the first water pump (210) respectively, and the second manual switch (420) is electrically connected with the power supply (500) and the second water pump (220) respectively.
8. The deep well drainage system according to claim 3,
the first floating ball (110) and the second floating ball (120) are floating balls with cables, and the overlapping area of the cables of the first floating ball (110) and the cables of the second floating ball (120) is bound by fasteners.
9. The deep well drainage system according to claim 3,
the floating ball assembly (100) further comprises a support rod, the first floating ball (110) and the second floating ball (120) are floating balls with cables, and the cables of the first floating ball (110) and the cables of the second floating ball (120) are connected with the support rod through fasteners respectively.
10. The deep well drainage system according to claim 3,
the first floating ball (110) is higher than the second floating ball (120), and the height difference between the first floating ball (110) and the second floating ball (120) is greater than or equal to 0.4 m and less than or equal to 0.6 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222009976.8U CN218376831U (en) | 2022-08-01 | 2022-08-01 | Deep well drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222009976.8U CN218376831U (en) | 2022-08-01 | 2022-08-01 | Deep well drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218376831U true CN218376831U (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222009976.8U Active CN218376831U (en) | 2022-08-01 | 2022-08-01 | Deep well drainage system |
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| Country | Link |
|---|---|
| CN (1) | CN218376831U (en) |
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2022
- 2022-08-01 CN CN202222009976.8U patent/CN218376831U/en active Active
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