Liquid suction filtration device for detecting water-soluble hexavalent chromium in cement

Abstract

The utility model relates to a liquid suction filtration device for detecting water-soluble hexavalent chromium in cement, which comprises a hard pipe, the hard pipe is fixed in a first box body, the box wall of the first box body is provided with a liquid outlet connected with the water outlet end of the hard pipe, a pump body is arranged on the hard pipe, and the pump body is provided with a water inlet. The water inlet end of the hard pipe is connected with the water outlet end of a filtering element located in the second box body, the second box body is fixed to one side of the first box body, a liquid inlet pipe of the filtering element is connected with one end of a hose, the other end of the hose is connected with one end of a liquid guiding pipe, and the liquid guiding pipe extends to the position below the second box body and is in sliding connection with the second box body. And the liquid guide pipe is also connected with a lifting mechanism arranged in the second box body. The suction filtration device disclosed by the utility model is convenient to operate, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cement detection equipment, in particular to a liquid suction filtration device used for detecting water-soluble hexavalent chromium in cement. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] In the process of rapid screening and detection of water-soluble hexavalent chromium in cement, it is necessary to dissolve the water-soluble hexavalent chromium in water to obtain the target solution to be tested. The specific method is to fully mix cement and water in a certain proportion, so that the water-soluble hexavalent chromium in cement is transferred to the aqueous phase, and the clear filtrate is obtained by filtration for subsequent tests. This filtration process currently requires manual filtration. This method is to mix a certain amount of cement with water, and after a period of precipitation, a supernatant of about 1 cm is formed, but the supernatant contains impurities. The current method of extracting the supernatant is to connect the water system microporous filter with a syringe and extract it manually; due to the good density of the water system microporous filter, it takes a lot of effort to extract the test amount of supernatant. If the mixed solution is turbid or the supernatant is less, it will be more difficult to obtain a clear filtrate, and repeated filtration is required, which further increases the labor intensity of the staff. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a liquid suction filtration device for detecting water-soluble hexavalent chromium in cement, which is simple to operate, saves time and effort, and reduces the labor intensity of staff.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An embodiment of the utility model provides a liquid filtration device for detecting water-soluble hexavalent chromium in cement, comprising a hard tube, which is fixed inside a first box body, a liquid outlet connected to a water outlet end of the hard tube is provided on a box wall of the first box body, a pump body is installed on the hard tube, a water inlet end of the hard tube is connected to a water outlet end of a filter element located in a second box body, the second box body is fixed on one side of the first box body, a liquid inlet pipe of the filter element is connected to one end of a hose, the other end of the hose is connected to one end of a liquid introduction pipe, the liquid introduction pipe extends to the bottom of the second box body and is slidably connected to the second box body, and the liquid introduction pipe is also connected to a lifting mechanism installed in the second box body.

[0007] Optionally, the liquid inlet end of the filter element is detachably connected to one end of the hose, and the liquid outlet end is detachably connected to the liquid inlet end of the hard tube.

[0008] Optionally, the second box body is open at the top and is provided with a box cover, and a side edge of the box cover is rotatably connected to a corresponding side edge of the second box body.

[0009] Optionally, a case cover handle is provided on the case cover.

[0010] Optionally, a box handle is provided on the top of the first box.

[0011] Optionally, the filter element is a microporous filter.

[0012] Optionally, the liquid drainage tube is a hard transparent tube and is equipped with a liquid level detection element.

[0013] Optionally, the liquid level detection element adopts a clamp-tube type liquid level sensor.

[0014] Optionally, the pump body adopts a DC electric peristaltic water pump.

[0015] Optionally, the lifting mechanism adopts an electric lifting rod or a rack and pinion lifting mechanism.

[0016] The beneficial effects of the above utility model are as follows:

[0017] 1. The liquid filtration device of the utility model comprises a liquid inlet pipe, a hose, a filter element and a hard pipe which are arranged in sequence, a pump body is installed on the hard pipe, and the liquid inlet pipe is connected to the lifting mechanism in the second box body. When in use, the height of the liquid inlet pipe can be adjusted by the lifting mechanism, so that the liquid inlet end of the liquid inlet pipe is extended into the container containing the supernatant liquid for a set distance below the liquid surface, and then the supernatant liquid is filtered by the pump body, without the need for manual filtration, and the pump body is used instead of manual operation, which saves time and effort, especially in the case where repeated filtration is required, which greatly reduces the labor intensity of the staff and improves the work efficiency.

[0018] 2. In the liquid filtration device of the utility model, the filter element is detachably connected to the hose and the hard pipe, which is convenient for disassembly, replacement or maintenance. After disassembly, the hose can be directly connected to the hard pipe to achieve cleaning of the hard pipe, pump body, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0020] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0021] Among them, 1. display screen, 2. power switch, 3. speed adjustment knob, 4. self-cleaning button, 5. start button, 6. pause / end button, 7. bottom plate, 8. lifting button, 9. liquid outlet, 10. DC electric peristaltic water pump, 11. glass rigid tube, 12. clamping tube liquid level sensor, 13. liquid inlet, 14. plastic hose, 15. water system microporous filter, 16. box cover handle, 17. lifting mechanism, 18. box cover, 19. box body handle, 20. second box body, 21. first box body, 22. container, 23. rigid tube, 24. power supply. DETAILED DESCRIPTION

[0022] Example 1

[0023] This embodiment provides a liquid filtration device for detecting water-soluble hexavalent chromium in cement, such as Figure 1 As shown, it includes a first box body 21, a second box body 20 is arranged on one side of the top of the first box body 21, the first box body 21 and the second box body 20 are fixedly connected, a hard tube 23 is arranged in the first box body 21, the water outlet end of the hard tube 23 extends to the side box wall of the first box body 21 away from the second box body 20 and is connected to the liquid outlet 9 arranged on the side box wall of the first box body 21, the water inlet end of the hard tube 23 extends to the inside of the second box body 20 to form a liquid inlet 13, a pump body is installed on the hard tube 23, the pump body is used to drive the liquid to flow from the liquid inlet 13 of the hard tube to the liquid outlet 9, the liquid inlet 13 of the hard tube 23 is detachably fixedly connected to the liquid outlet end of the filter element, and the liquid inlet end of the filter element is connected to one end of the hose The end is detachably connected, and the other end of the hose is connected to the top of the drainage tube. The filter element and the hose are both located inside the second box body 20. One end of the drainage tube is connected to the hose, and the other end extends to the bottom of the second box body and is used to extend into the container 22 containing the supernatant. The drainage tube is slidably connected to the bottom box wall of the second box body 20 and is connected to a lifting mechanism located inside the second box body 20. The lifting mechanism can drive the drainage tube to rise and fall so that the distance that the bottom end of the drainage tube extends below the liquid surface in the container 22 meets the requirements. When the pump body works, the supernatant in the container 22 can be drawn out. The liquid passes through the drainage tube, the hose, the filter element, and the hard tube 23 in turn and then flows out from the liquid outlet 9 of the first box body 21, thereby realizing the suction filtration of the liquid.

[0024] The first box body 21 is a rectangular parallelepiped structure with a length of 250 mm, a width of 180 mm, and a height of 200 mm. The first box body 21 is made of thermoplastic plastic material, preferably ABS material.

[0025] The second box body 20 is open at the top, and a box cover 18 is provided at the open position. One side edge of the box cover 18 is rotatably connected to the corresponding side edge of the second box body 20 to realize the opening and closing of the second box body 20 .

[0026] The box cover 18 is provided with a box cover handle 16 to facilitate the staff to rotate the box cover 18 to open or close the second box body 20 .

[0027] In this embodiment, the second box body 20 adopts a right-angled triangle structure, that is, the vertical section of the second box body 20 is a right-angled triangle, and the box wall where one of its right-angled sides is located is fixedly connected to the side box wall on the opposite side of the liquid outlet 9 of the first box body 21, and the length is 50 mm, and the box wall where the other right-angled side is located is 100 mm long, and the plane corresponding to the hypotenuse is not provided with a box wall to form an open end, and a box cover 18 is provided at the open end, and the edge of the box cover 18 away from the first box body 21 is rotatably connected to the edge of the second box body 20 away from the first box body 21, and accordingly, the box cover handle 16 is provided close to the first box body 21.

[0028] The second box body 20 is also made of thermoplastic material, preferably, made of ABS material.

[0029] A hard tube 23 is arranged in the first box body 21. The hard tube 23 is made of hard material, such as hard plastic, hard glass or hard metal, etc. The hard tube 23 is a bent tube, including a first tube segment and a second tube segment. The first tube segment is arranged at the upper part of the internal space of the first box body, and its liquid inlet end extends to the side box wall where the first box body 21 is connected to the second box body 20 to form a liquid inlet 13, and the other end is connected to one end of the second tube segment. The second tube segment is arranged at a set obtuse angle with the first tube segment, and the second tube segment extends obliquely downward to the bottom of the side box wall of the first box body 21 away from the second box body 20, and is connected to the liquid outlet 9 arranged at the bottom of the side box wall.

[0030] Furthermore, the liquid outlet 9 has a diameter of 4 mm, is 20 mm away from the bottom surface of the first box body 21 , and is located in the middle of the side wall of the first box body 21 along the width direction of the first box body 21 .

[0031] The first pipe section is provided with a pump body. Furthermore, the pump body adopts a DC electric peristaltic water pump 10. The DC electric peristaltic water pump 10 is connected to a microcomputer controller installed in the first box 21 by a circuit. The microcomputer controller controls its operation and can adjust the speed. The speed adjustment range is 0-500r / min. The DC electric peristaltic water pump 10 can adopt existing equipment, and its specific structure is not described in detail here.

[0032] The liquid inlet end of the hard tube 23 is detachably connected to the liquid outlet end of the filter element. In this embodiment, the filter element adopts a microporous filter, preferably a water system microporous filter 15, and existing equipment can be used. Its specific structure is not described in detail here.

[0033] The liquid inlet end of the hard tube 23 is inserted into the liquid outlet end of the water system microporous filter 15 and a rubber sealing ring is arranged between the liquid outlet end of the water system microporous filter 15, so as to realize the detachable connection between the hard tube and the water system microporous filter.

[0034] The liquid inlet end of the water system microporous filter 15 is connected to one end of a hose. In this embodiment, the hose is a plastic hose 14 that can be deformed and expanded. The liquid outlet end of the plastic hose 14 is sleeved on the outer periphery of the liquid inlet end of the water system microporous filter 15.

[0035] The other end of the plastic hose 14 is connected to the top of a water pipe vertically arranged with its axis, and the hose is sleeved on the outer periphery of the top of the water pipe. In this embodiment, the water pipe adopts a glass rigid tube 11 with a diameter of 4 mm. The glass rigid tube 11 passes through the bottom wall of the second box body 20 and is slidably connected to the bottom wall of the second box body 20, and can perform lifting and lowering movements along its own axial direction.

[0036] The glass rigid tube 11 is connected to a lifting mechanism 17 located inside the second box body 20 , and the lifting mechanism 17 can drive the glass rigid tube 11 to perform lifting motion.

[0037] In this embodiment, the lifting mechanism 17 adopts an electric lifting rod with a vertical axis. The fixed part of the electric lifting rod is fixedly connected to the bottom box wall of the second box body 20, and its lifting part is connected to the glass rigid tube 11 through a bracket, which can drive the glass rigid tube 11 to perform lifting movement.

[0038] Furthermore, the bracket includes a support rod, one end of which is fixed to the lifting part of the electric lifting rod, and the other end is provided with a clamp, which is fixedly connected to the glass rigid tube to achieve the connection between the lifting part of the electric lifting rod and the glass rigid tube 11.

[0039] The electric lifting rod is connected to a microcomputer controller, and its operation is controlled by the microcomputer controller.

[0040] In another embodiment, the lifting mechanism 17 adopts a gear rack lifting mechanism, including a motor installed on the bottom wall of the second box body 20, the output shaft of the motor is connected to the gear, the gear is meshed with the rack set on the glass rigid tube 11, the motor is a forward and reverse motor, connected to a microcomputer controller, and its operation is controlled by the microcomputer controller.

[0041] A liquid level detection element is also installed on the pipe section of the glass rigid tube 11 extending to the bottom of the second box body. Furthermore, the liquid level detection element adopts a clamping tube type liquid level sensor 12. The clamping tube type liquid level sensor 12 can adopt existing equipment, and its specific structure is not described in detail here. The clamping tube type liquid level sensor is connected to the microcomputer controller and can transmit the detected liquid level information to the microcomputer controller.

[0042] Preferably, the clamping tube type liquid level sensor 12 is installed at a position 5 mm away from the lower end of the glass rigid tube 11, and its installation position can be manually adjusted.

[0043] The first box 21 is also provided with a power supply 24 for supplying power to the lifting mechanism, microcomputer controller, DC electric peristaltic water pump 10 and other electrical equipment. The first box 21 is also provided with a power switch 2, a speed adjustment knob 3, a self-cleaning button 4, a start button 5, a pause / end button 6, and a lifting button 8. The above buttons and keys are connected to the microcomputer controller, and the staff can send instructions to the microcomputer controller through the above buttons and keys. The power switch is connected to the power supply circuit of each device to control the conduction and disconnection of the power supply circuit.

[0044] The microcomputer controller is connected to a display screen 1 installed on the outer side of the box wall at the side portion of the first box body, and can display the working status information on the display screen.

[0045] Furthermore, a box handle 19 is provided on the top box wall of the first box 21 to facilitate the staff to transfer the entire filtration device.

[0046] Furthermore, a bottom plate 7 is disposed directly below the second box body 20. The bottom plate 7 is 100 mm long, 180 mm wide and 5 mm thick and is used to place a container containing supernatant.

[0047] The working method of the liquid suction filtration device of this embodiment is:

[0048] Before the experiment, the box cover 18 is rotated by the box cover handle 16 to open the second box body 20, and the liquid outlet end of the water system microporous filter 15 to be used is installed to the liquid inlet end of the hard tube 23, and the liquid inlet end of the water system microporous filter 15 is installed on the liquid outlet end of the plastic hose 14. The box cover 18 is closed, and then the container 22 containing the supernatant is opened and placed on the bottom plate 7, and the lifting button 8 is pressed to make the glass hard tube 11 automatically descend to the position where the supernatant can be extracted (about 6mm below the liquid surface. When the glass hard tube descends to the point where the clamping tube type liquid level sensor 12 sends a feedback signal to the microcomputer controller, the lifting mechanism stops working.) Connect the liquid container to the liquid outlet 9 of the first box body 21, turn on the power switch 2, Start the start button 5 and adjust the speed adjustment knob 3 so that the display screen 1 shows that the pump body reaches the required speed value. The entire device starts automatic filtration. After the filtrate is extracted, press the pause / end button 6. The glass hard tube 11 automatically returns to the initial position driven by the lifting mechanism 17. Open the box cover 18, remove the water-washed microporous filter 15, and directly connect the plastic hose 14 to the liquid inlet end of the hard tube 23. Place the external container containing distilled water on the bottom plate 7. The lifting mechanism 17 drives the glass hard tube to drop to a position 6 mm below the liquid level. Turn on the pump body to make the device enter the self-cleaning program. After cleaning is completed, the glass hard tube 11 automatically returns to the initial position. Turn off the power switch and the cleaning is completed.

[0049] By adopting the filtration device of this embodiment, the supernatant is filtered through a DC electric peristaltic water pump 10, and there is no need for manual filtration. The operation is convenient, time-saving and labor-saving, especially in the case where repeated filtration is required, the labor intensity of the staff is greatly reduced and the work efficiency is improved.

[0050] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A liquid filtration device for detecting water-soluble hexavalent chromium in cement, characterized in that: It includes a hard tube, which is fixed inside a first box body. A liquid outlet connected to the water outlet end of the hard tube is provided on the wall of the first box body. A pump body is installed on the hard tube. The water inlet end of the hard tube is connected to the water outlet end of a filter element located in a second box body. The second box body is fixed on one side of the first box body. The liquid inlet pipe of the filter element is connected to one end of a hose. The other end of the hose is connected to one end of a liquid introduction pipe. The liquid introduction pipe extends to the bottom of the second box body and is slidably connected to the second box body. The liquid introduction pipe is also connected to a lifting mechanism installed in the second box body.

2. A liquid suction filtration device for detecting water-soluble hexavalent chromium in cement according to claim 1, characterized in that: The liquid inlet end of the filter element is detachably connected to one end of the hose, and the liquid outlet end is detachably connected to the liquid inlet end of the hard tube.

3. A liquid suction filtration device for detecting water-soluble hexavalent chromium in cement according to claim 1, characterized in that: The second box body is open at the top and is provided with a box cover, and one side edge of the box cover is rotatably connected to the corresponding side edge of the second box body.

4. A liquid suction filtration device for detecting water-soluble hexavalent chromium in cement as claimed in claim 3, characterized in that: A box cover handle is arranged on the box cover.

5. A liquid suction filtration device for detecting water-soluble hexavalent chromium in cement according to claim 1, characterized in that: A box handle is arranged on the top of the first box.

6. A liquid suction filtration device for detecting water-soluble hexavalent chromium in cement according to claim 1, characterized in that: The filter element adopts a microporous filter.

7. A liquid suction filtration device for detecting water-soluble hexavalent chromium in cement according to claim 1, characterized in that: The liquid inlet tube is a hard transparent tube and is provided with a liquid level detection element.

8. A liquid suction filtration device for detecting water-soluble hexavalent chromium in cement as claimed in claim 7, characterized in that: The liquid level detection element adopts a clamping tube type liquid level sensor.

9. A liquid suction filtration device for detecting water-soluble hexavalent chromium in cement according to claim 1, characterized in that: The pump body adopts a DC electric peristaltic water pump.

10. A liquid suction filtration device for detecting water-soluble hexavalent chromium in cement according to claim 1, characterized in that: The lifting mechanism adopts an electric lifting rod or a gear rack lifting mechanism.

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