CN213986108U - Automatic water adding device of concrete impermeability instrument - Google Patents
Automatic water adding device of concrete impermeability instrument Download PDFInfo
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- CN213986108U CN213986108U CN202021744645.3U CN202021744645U CN213986108U CN 213986108 U CN213986108 U CN 213986108U CN 202021744645 U CN202021744645 U CN 202021744645U CN 213986108 U CN213986108 U CN 213986108U
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Abstract
The utility model provides an automatic water adding device of a concrete impermeability instrument, which comprises a water tank, wherein the water tank comprises a water storage bin and a pressure bin positioned above the water storage bin, a pressure partition plate is movably connected between the water storage bin and the pressure bin, a pressure rod is fixedly connected below the pressure partition plate, and one end of the pressure rod extends out of a shell of the water storage bin; the water storage bin is fixedly connected with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with a first electromagnetic valve, the water outlet pipe is connected with a second electromagnetic valve, and one side of the water storage bin is provided with a water level monitoring device; a water pumping assembly is arranged outside the water storage bin and pumps water in the water storage bin into the pressure bin; the automatic water feeding device of the concrete impermeability instrument can realize automatic water feeding and automatic water discharging of the existing water bin and the pressure bin; the drainage mechanism of the pressure bin is combined with the pressure mechanism, and the drainage pipeline of the pressure bin is combined with the water feeding pipeline, so that the structure is simplified.
Description
Technical Field
The utility model relates to a concrete inspection technical field, concretely relates to automatic water installation that adds of concrete anti-permeability apparatus.
Background
The concrete impermeability instrument is used for detecting the waterproof performance of hardened concrete and determining impermeability grade, and is a necessary measuring instrument for concrete premixing enterprises and building engineering quality detection laboratories. The concrete impermeability instrument is an instrument which utilizes the principle that the pressure in a sealed container is equal everywhere, uses a water pump to transmit pressure to the whole system, controls the magnitude of the pressure through a pressure instrument and a controller, realizes that water pressure permeates into a test piece which is pressed in a test die from bottom to top, thereby measuring the impermeability of the test piece and calculating the impermeability grade of the test piece.
The existing concrete impermeability tester needs to continuously output water pressure to a test piece through a water pump in the experimental process to test the permeability of concrete, so that water in a water tank needs to be continuously supplemented manually, and the waste of personnel efficiency is caused. The Chinese utility model with the application number of CN201821313563.6 in the prior art is specially favorable for disclosing a concrete permeameter in 2018, 8.14.8.A concrete permeameter comprises a water tank, a temperature sensor, a solenoid valve, a controller, a drain pipe and a water inlet pipe, which can realize the automatic water discharge and automatic water inlet of the water tank for storing water, but does not have the automatic water inlet and water discharge of a pressure water tank; the chinese utility model with application number CN201921006913.9 of prior art discloses a water supply installation of concrete impermeability instrument exclusively for 2019, 7 months and 1 days, including water supply tank, workstation, supply pressure system, operation panel and water supply system, surge tank is used for the water pressure that stably supplies pressure system, and the surge tank of this scheme needs manual drainage, and has directly discharged the outside.
Disclosure of Invention
The utility model aims at providing an automatic device of adding water of concrete anti-permeability apparatus to the problem that prior art exists. The automatic water feeding and automatic water discharging of the existing water bin and the pressure bin can be realized; the water in the pressure bin is directly discharged into the water storage bin, so that the water resource is saved; the drainage mechanism of the pressure bin is combined with the pressure mechanism, and the drainage pipeline of the pressure bin is combined with the water feeding pipeline, so that the structure is simplified.
In order to achieve the above object, the utility model adopts the following technical scheme:
the automatic water adding device of the concrete impermeability instrument comprises a water tank, wherein the water tank comprises a water storage bin and a pressure bin positioned above the water storage bin, a pressure partition plate is movably connected between the water storage bin and the pressure bin, a pressure rod is fixedly connected below the pressure partition plate, and one end of the pressure rod extends out of a shell of the water storage bin; the water storage bin is fixedly connected with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with a first electromagnetic valve, the water outlet pipe is connected with a second electromagnetic valve, and one side of the water storage bin is provided with a water level monitoring device; a water pumping assembly is arranged outside the water storage bin, an input port of the water pumping assembly is connected with a first pipeline extending into the water storage bin, an output port of the water pumping assembly is connected with a second pipeline extending into the pressure bin, a third pipeline is connected between the first pipeline and the second pipeline, the third pipeline is connected with the first pipeline through a first tee joint, and the third pipeline is connected with the second pipeline through a second tee joint; the third pipeline is connected with a third electromagnetic valve, the third electromagnetic valve is located between the first three-way connecting piece and the second three-way connecting piece, the second pipeline is connected with a fourth electromagnetic valve, and the fourth electromagnetic valve is located between the output port of the water pumping assembly and the second three-way connecting piece.
In the scheme, the pressure bin is connected with the concrete test mold through the pressure pipeline, and the pressure bin provides set water pressure for performing an impermeability test of the concrete test mold; the water pumping assembly comprises a motor and a water pump, the water pump pumps water in the water storage bin through a first pipeline and conveys the water into the pressure bin through a second pipeline, at the moment, the third electromagnetic valve is in a closed state, the fourth electromagnetic valve is in an open state, when the pressure bin is full of water, the fourth electromagnetic valve is closed, the water is not input into the pressure bin any more, the external driver provides upward pressure for the pressure rod, the pressure rod transmits the pressure to the pressure partition plate, the pressure partition plate moves upwards to push the water in the pressure bin to enter the pressure pipeline, different water pressure grades are obtained by adjusting the output torque of the external driver, and an anti-seepage test is carried out; after the test is finished, opening the third electromagnetic valve, closing the fourth electromagnetic valve, continuously moving the pressure partition plate upwards, and allowing the residual water to enter the water storage bin through the third pipeline; after the water pressure in the pressure cabin is finished, the pressure clapboard begins to descend and returns to the initial position to prepare for the next test.
The water level monitoring device of the water storage bin is used for supplying water to the pressure bin, the water storage bin has the functions of automatic water supply and automatic water drainage, when the water level monitoring device detects that the water level is greater than a first preset value, the first electromagnetic valve is closed, the second electromagnetic valve is opened, the water storage bin starts to drain water, when the water level monitoring device detects that the water level is greater than a second preset value, the first electromagnetic valve is closed, the second electromagnetic valve is also in a closed state at the moment, when the water level monitoring device detects that the water level is less than a third preset value, the first electromagnetic valve is opened, the second electromagnetic valve is kept closed, and the water storage bin starts to feed water.
Furthermore, the water level monitoring device comprises a first water level sensor, a second water level sensor and a third water level sensor which are fixedly connected with the side wall of the water storage bin from top to bottom, the first water level sensor, the second water level sensor and the third water level sensor penetrate through the side wall of the water storage bin, probes of the first water level sensor, the second water level sensor and the third water level sensor extend into the inner side of the water storage bin, and wiring terminals of the first water level sensor, the second water level sensor and the third water level sensor are located on the outer side of the water storage bin.
In the above scheme, the first water level sensor, the second water level sensor and the third water level sensor can only detect the water level of the installation position, that is, when the water level exceeds the position of the water level sensor or when the water level is lower than the position of the water level sensor, the water level sensor can send out a switching value signal; specifically, when the water level exceeds the position of the first water level sensor, the first electromagnetic valve is closed, the second electromagnetic valve is opened, the water storage bin starts to discharge water, when the water level exceeds the position of the second water level sensor, the first electromagnetic valve is closed, the second electromagnetic valve is also in a closed state at the moment, when the water level is lower than the position of the second water level sensor, the first electromagnetic valve is opened, the second electromagnetic valve is kept closed, and the water storage bin starts to feed water.
Furthermore, the outer side wall of the water tank is fixedly connected with a cable protection pipe, the outer pipe wall of the cable protection pipe is welded with the outer wall of the water tank, and the cable protection pipe extends along the outer side wall of the water tank and is arranged near the water level monitoring device and the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve. The cable protection tube is used for protecting the cable and avoiding electric leakage caused by the fact that the cable breaks the insulating layer.
Furthermore, a control box is arranged on the outer side of the water tank and comprises a power supply bin and a control bin, a switch power supply is fixedly arranged in the power supply bin, and a controller is fixedly arranged in the control bin. The controller receives the electric signal sent by the water level monitoring device, processes the electric signal and sends a control signal to each electromagnetic valve to control the closing and opening of each electromagnetic valve; the switching power supply is used for converting alternating current into direct current and then providing electric energy for the water level monitoring device and each electromagnetic valve.
Furthermore, a groove is formed in the side face, in contact with the pressure bin, of the pressure partition plate, and a sealing ring is clamped in the groove; the pressure partition plate is provided with a pressure release valve which penetrates through the pressure partition plate from top to bottom. The sealing washer is used for when the upward displacement of pressure baffle, prevents to leak, and the relief valve sets for the pressure release pressure and is used for avoiding damaging the test piece because of pressure is too big in the pressure reservoir.
Furthermore, a circle of flange is arranged inwards at the joint of the water storage bin and the pressure bin, and the flange is positioned below the pressure partition plate. The flange is used to support the pressure bulkhead when the pressure bulkhead is in the initial position.
Further, a supporting seat is fixedly arranged on the inner side of a bottom plate of the water storage bin, the pressure rod penetrates through the supporting seat, a plurality of annular grooves are formed in the side face, contacted with the pressure rod, of the supporting seat, and annular sealing rings are arranged in the annular grooves.
Furthermore, a one-way air suction valve communicated with the outside is arranged at the top of the pressure bin. When the pressure clapboard moves upwards, the one-way air suction valve is in a closed state, and when the pressure clapboard moves downwards, the one-way air suction valve is opened to suck air, so that the difficulty in moving downwards of the pressure clapboard due to vacuum is avoided.
Furthermore, first solenoid valve the second solenoid valve the third solenoid valve the fourth solenoid valve all includes butterfly valve and electromagnetism executive component, the rotary rod of butterfly valve stretch out with the rotatory chamber joint of electromagnetism executive component, the electromagnetism executive component is connected with outside cable conductor. The first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the water level monitoring device are all electrically connected with the switching power supply and the controller.
Furthermore, the top of the pressure bin is connected with a pressure pipeline, and the pressure pipeline is connected with a concrete test mould.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model can realize automatic water feeding and automatic water discharging of the existing water sump by arranging the electromagnetic valve, the water level monitoring device and the controller; the automatic water feeding and automatic water discharging of the pressure bin are realized by arranging the water pumping assembly, the pressure partition plate and the pipeline loop;
2. the third pipeline is communicated with the first pipeline, so that water in the pressure bin can be directly discharged into the water storage bin, and water resources are saved;
3. the drainage mechanism of the pressure bin is combined with the pressure mechanism, and the drainage pipeline of the pressure bin is combined with the water feeding pipeline, so that the structure is simplified;
4. the pressure baffle is pushed by the pressure rod to inject pressure into the pressure bin, so that the condition that the water pump vibrates violently under high pressure due to the adoption of a water pump injection mode is avoided.
Drawings
FIG. 1 is a schematic structural view of the automatic water feeding device of the concrete impermeability instrument of the utility model;
FIG. 2 is a partially enlarged schematic view of the automatic water adding device of the concrete impermeability instrument of the utility model;
fig. 3 is a schematic structural view of a cable protection pipe of the automatic water adding device of the concrete impermeability instrument of the utility model;
in the figure: 1. a water storage bin; 2. a pressure bin; 3. a pressure bulkhead; 301. a seal ring; 4. a pressure lever; 5. a water level monitoring device; 501. a first water level sensor; 502. a second water level sensor; 503. a third water level sensor; 6. a water inlet pipe; 7. a water outlet pipe; 8. a first solenoid valve; 9. a second solenoid valve; 10. a water pumping assembly; 11. a control box; 12. a controller; 13. a switching power supply; 14. a first conduit; 15. a second conduit; 16. a third pipeline; 17. a third electromagnetic valve; 18. a fourth solenoid valve; 19. a supporting seat; 20. an annular seal ring; 21. a pressure relief valve; 22. a flange; 23. a one-way suction valve; 24. a cable protection tube; 25. a pressure line; 26. testing a concrete mold; 27. a first three-way connection; 28. and a second three-way connection piece.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The automatic water adding device of the concrete impermeability instrument comprises a water tank, wherein the water tank comprises a water storage bin 1 and a pressure bin 2 positioned above the water storage bin 1, a pressure partition plate 3 is movably connected between the water storage bin 1 and the pressure bin 2, a pressure rod 4 is fixedly connected below the pressure partition plate 3, and one end of the pressure rod 4 extends out of a shell of the water storage bin 1; the water storage bin 1 is fixedly connected with a water inlet pipe 6 and a water outlet pipe 7, the water inlet pipe 6 is connected with a first electromagnetic valve 8, the water outlet pipe 7 is connected with a second electromagnetic valve 9, and one side of the water storage bin 1 is provided with a water level monitoring device 5; a water pumping assembly 10 is arranged outside the water storage bin 1, an input port of the water pumping assembly 10 is connected with a first pipeline 14 extending into the water storage bin 1, an output port of the water pumping assembly is connected with a second pipeline 15 extending into the pressure bin 2, a third pipeline 16 is connected between the first pipeline 14 and the second pipeline 15, the third pipeline 16 is connected with the first pipeline 14 through a first three-way connecting piece 27, and the third pipeline 16 is connected with the second pipeline 15 through a second three-way connecting piece 28; the third pipeline 16 is connected with a third electromagnetic valve 17, the third electromagnetic valve 17 is located between the first three-way connecting piece 27 and the second three-way connecting piece 28, the second pipeline 15 is connected with a fourth electromagnetic valve 18, and the fourth electromagnetic valve 18 is located between an output port of the water pumping assembly 10 and the second three-way connecting piece 28.
In the scheme, the pressure bin 2 is connected with the concrete test mould 26 through the pressure pipeline 25, and the pressure bin 2 provides set water pressure for carrying out the impermeability test of the concrete test mould; the water pumping assembly 10 comprises a motor and a water pump, the water pump pumps water in the water storage bin 1 through a first pipeline 14 and conveys the water into the pressure bin 2 through a second pipeline 15, at the moment, a third electromagnetic valve 17 is in a closed state, a fourth electromagnetic valve 18 is in an open state, when the pressure bin 2 is filled with water, the fourth electromagnetic valve 18 is closed, the water is not input into the pressure bin 2 any more, an external driver provides upward pressure for a pressure rod 4, the pressure rod 4 transmits the pressure to a pressure partition plate 3, the pressure partition plate 3 moves upwards to push the water in the pressure bin 2 into a pressure pipeline 25, and different water pressure levels are obtained by adjusting the driving force of the external driver to perform an anti-permeability test; after the test is finished, opening the third electromagnetic valve 17, closing the fourth electromagnetic valve 18, continuously moving the pressure partition plate 3 upwards, and allowing the residual water to enter the water storage bin 1 through the third pipeline 16; after the water pressure in the pressure chamber 2 is finished, the pressure partition plate 3 begins to descend and returns to the initial position to prepare for the next test. The external driver can be a hydraulic machine or a motor.
Water level monitoring device 5 of depositing water storehouse 1 is used for supplying water for pressure chamber 2, it has automatic water feeding and automatic drainage function to deposit water storehouse 1, when water level monitoring device 5 detects the water level and is greater than first default, first solenoid valve 8 closes, second solenoid valve 9 opens, it begins the drainage to deposit water storehouse 1, when water level monitoring device 5 detects the water level and is greater than the second default, first solenoid valve 8 closes, second solenoid valve 9 is the closed condition this moment, when water level monitoring device 5 detects the water level and is less than the third default, first solenoid valve 8 opens, second solenoid valve 9 keeps closing, it begins to intake to deposit water storehouse 1.
Further, the water level monitoring device 5 includes a first water level sensor 501, a second water level sensor 502 and a third water level sensor 503 which are fixedly connected with the side wall of the water storage bin from top to bottom, the first water level sensor 501, the second water level sensor 502 and the third water level sensor 503 penetrate through the side wall of the water storage bin, probes of the first water level sensor 501, the second water level sensor 502 and the third water level sensor 503 extend into the inner side of the water storage bin 1, and terminals of the first water level sensor 501, the second water level sensor 502 and the third water level sensor 503 are located at the outer side of the water storage bin 1.
In the above solution, the first water level sensor 501, the second water level sensor 502 and the third water level sensor 503 can only detect the water level of the installation position, that is, when the water level exceeds the position of the water level sensor or when the water level is lower than the position of the water level sensor, the water level sensor will send a switching value signal; specifically, when the water level exceeds the position of the first water level sensor 501, the first electromagnetic valve 8 is closed, the second electromagnetic valve 9 is opened, the water storage bin 1 starts to discharge water, when the water level exceeds the position of the second water level sensor 502, the first electromagnetic valve 8 is closed, at the moment, the second electromagnetic valve 9 is also in a closed state, when the water level is lower than the position of the third water level sensor 503, the first electromagnetic valve 8 is opened, the second electromagnetic valve 9 is kept closed, and the water storage bin 1 starts to feed water.
Further, a cable protection pipe 24 is fixedly connected to the outer side wall of the water tank, the outer pipe wall of the cable protection pipe 24 is welded to the outer wall of the water tank, and the cable protection pipe 24 extends along the outer side wall of the water tank and is arranged near the water level monitoring device and the first, second, third and fourth electromagnetic valves 8, 9, 17 and 18. The cable protection tube 24 is used for protecting the cable and preventing the cable from electric leakage after the cable breaks the insulating layer.
Further, a control box 11 is arranged on the outer side of the water tank, the control box 11 comprises a power supply bin and a control bin, a switching power supply 13 is fixedly arranged in the power supply bin, and a controller 12 is fixedly arranged in the control bin. The controller 12 receives the electric signal sent by the water level monitoring device 5, processes the electric signal and sends a control signal to each electromagnetic valve to control the closing and opening of each electromagnetic valve; the switching power supply 13 is used for supplying electric energy to the water level monitoring device 5 and each electromagnetic valve after converting alternating current into direct current.
Further, a groove is formed in the side face, in contact with the pressure bin 2, of the pressure partition plate 3, and a sealing ring 301 is clamped in the groove; the pressure partition plate 3 is provided with a pressure relief valve 21 which penetrates up and down. The sealing ring 301 is used for preventing water leakage when the pressure partition plate 3 moves upwards, and the pressure relief valve 21 sets the pressure relief pressure to prevent the test piece from being damaged due to overlarge pressure in the pressure bin 2.
Furthermore, a ring of flanges 22 are arranged inwards at the connection part of the water storage bin 1 and the pressure bin 2, and the flanges 22 are positioned below the pressure partition plate 3. The flange 22 serves to support the pressure bulkhead 3 when the pressure bulkhead 3 is in the initial position.
Further, a supporting seat 19 is fixedly arranged on the inner side of a bottom plate of the water storage bin 1, the pressure rod 4 penetrates through the supporting seat 19, a plurality of annular grooves are formed in the side face, contacting with the pressure rod 4, of the supporting seat 19, and annular sealing rings 20 are arranged in the annular grooves.
Further, a one-way air suction valve 23 communicated with the outside is arranged at the top of the pressure bin 2. When the pressure partition plate 3 moves upwards, the one-way air suction valve 23 is in a closed state, and when the pressure partition plate 3 moves downwards, the one-way air suction valve 23 is opened to suck air, so that the difficulty of downward movement of the pressure partition plate 3 caused by vacuum is avoided.
Further, first solenoid valve 8 second solenoid valve 9 third solenoid valve 17 fourth solenoid valve 18 all includes butterfly valve and electromagnetism executive component, the rotary rod of butterfly valve stretch out with the rotatory chamber joint of electromagnetism executive component, the electromagnetism executive component is connected with outside cable conductor. The first solenoid valve 8, the second solenoid valve 9, the third solenoid valve 17, the fourth solenoid valve 18 and the water level monitoring device are all electrically connected with the switching power supply 13 and the controller 12.
Further, the top of the pressure bin 2 is connected with a pressure pipeline 25, and the pressure pipeline 25 is connected with a concrete test mould 26.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The automatic water adding device of the concrete impermeability instrument is characterized by comprising a water tank, wherein the water tank comprises a water storage bin and a pressure bin positioned above the water storage bin, a pressure partition plate is movably connected between the water storage bin and the pressure bin, a pressure rod is fixedly connected below the pressure partition plate, and one end of the pressure rod extends out of a shell of the water storage bin; the water storage bin is fixedly connected with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with a first electromagnetic valve, the water outlet pipe is connected with a second electromagnetic valve, and one side of the water storage bin is provided with a water level monitoring device; a water pumping assembly is arranged outside the water storage bin, an input port of the water pumping assembly is connected with a first pipeline extending into the water storage bin, an output port of the water pumping assembly is connected with a second pipeline extending into the pressure bin, a third pipeline is connected between the first pipeline and the second pipeline, the third pipeline is connected with the first pipeline through a first tee joint, and the third pipeline is connected with the second pipeline through a second tee joint; the third pipeline is connected with a third electromagnetic valve, the third electromagnetic valve is located between the first three-way connecting piece and the second three-way connecting piece, the second pipeline is connected with a fourth electromagnetic valve, and the fourth electromagnetic valve is located between the output port of the water pumping assembly and the second three-way connecting piece.
2. The automatic water adding device of the concrete impermeability instrument of claim 1, wherein the water level monitoring device comprises a first water level sensor, a second water level sensor and a third water level sensor which are fixedly connected with the side wall of the water storage bin from top to bottom, the first water level sensor, the second water level sensor and the third water level sensor penetrate through the side wall of the water storage bin, probes of the first water level sensor, the second water level sensor and the third water level sensor extend into the inner side of the water storage bin, and terminals of the first water level sensor, the second water level sensor and the third water level sensor are located at the outer side of the water storage bin.
3. The automatic water adding device of the concrete impermeability instrument of claim 1, wherein a cable protection tube is fixedly connected to an outer side wall of the water tank, an outer tube wall of the cable protection tube is welded to an outer wall of the water tank, and the cable protection tube is extended along the outer side wall of the water tank and arranged near the water level monitoring device, the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve.
4. The automatic water adding device of the concrete impermeability instrument of claim 1, wherein a control box is arranged outside the water tank, the control box comprises a power supply bin and a control bin, a switch power supply is fixedly arranged in the power supply bin, and a controller is fixedly arranged in the control bin.
5. The automatic water adding device of the concrete impermeability instrument of claim 1, wherein a groove is arranged on the side surface of the pressure partition plate contacting the pressure chamber, and a sealing ring is clamped in the groove; the pressure partition plate is provided with a pressure release valve which penetrates through the pressure partition plate from top to bottom.
6. The automatic water adding device of the concrete impermeability instrument of claim 1, wherein a ring of flange is provided inward at the connection of the water storage bin and the pressure bin, and the flange is located below the pressure partition.
7. The automatic water adding device of the concrete impermeability instrument of claim 1, wherein a support seat is fixedly arranged inside a bottom plate of the water storage bin, the pressure rod penetrates through the support seat, a plurality of annular grooves are arranged on the inner side wall of the support seat, which is in contact with the pressure rod, and annular sealing rings are arranged in the annular grooves.
8. The automatic water adding device of the concrete impermeability instrument of claim 1, wherein a one-way air suction valve communicated with the outside is arranged at the top of the pressure bin.
9. The automatic water adding device of the concrete impermeability instrument of claim 4, wherein the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, the water level monitoring device are all electrically connected with the switch power supply and the controller.
10. The automatic water adding device of the concrete impermeability instrument of claim 1, wherein a pressure pipeline is connected to the top of the pressure bin, and the pressure pipeline is connected to a concrete test mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021744645.3U CN213986108U (en) | 2020-08-19 | 2020-08-19 | Automatic water adding device of concrete impermeability instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021744645.3U CN213986108U (en) | 2020-08-19 | 2020-08-19 | Automatic water adding device of concrete impermeability instrument |
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| CN213986108U true CN213986108U (en) | 2021-08-17 |
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| CN202021744645.3U Active CN213986108U (en) | 2020-08-19 | 2020-08-19 | Automatic water adding device of concrete impermeability instrument |
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Effective date of registration: 20220401 Address after: 313100 Li Jia Xiang Zhen Qi Jia Shan, Changxing County, Huzhou City, Zhejiang Province Patentee after: HUZHOU FENGSHENG NEW MATERIAL Co.,Ltd. Address before: 117009 niuxintai Town, Mingshan District, Benxi City, Liaoning Province Patentee before: LIAONING XINTUO BUILDING MATERIAL Co.,Ltd. |
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