Solid-liquid separation filtering device for material detection and filtering method thereof

Abstract

The application belongs to the technical field of solid-liquid separation for material detection, and relates to a solid-liquid separation filter device for material detection and a filtering method of the solid-liquid separation filter device for material detection. The solid-liquid separation filter device for material detection comprises a liquid storage tank (1), a filter funnel body (2), a filter screen cup (3), a separation pad cup (4), a filter disc (5), a sealing cover (6), a suction pump (8), a suction pipe (9), a high-pressure control valve (12), a low-pressure control valve (13), a filter screen support frame (21) and a filter screen (22). The filter funnel body (2) is arranged on the liquid storage tank (1), the upper portion of the filter funnel body (2) is a hollow cylinder, the middle portion of the filter funnel body (2) is a hollow cone, and the lower portion of the filter funnel body (2) is a hollow circular tube. When the solid-liquid separation filter device for material detection separates the solid-liquid mixture in material detection, the filtering speed can be accelerated, the solution volatilization can be reduced, and the solid substances can be prevented from being polluted.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of solid-liquid separation in material detection, and more particularly to a solid-liquid separation and filtration device for material detection, and to a filtration method of the solid-liquid separation and filtration device for material detection. BACKGROUND

[0002] Separating solid and liquid mixture is a step often handled in material detection work. Currently, most cases use funnel and filter paper for filtration. However, this method is time-consuming, low in separation efficiency, needs manual attendance, and is prone to cause solution evaporation and contaminate solid substances, which cannot meet the requirements of modern work for high efficiency, convenience and accuracy.

[0003] In the prior art, there is a technology named "Liquid-solid filtration equipment for strong acid and strong alkali materials", with a publication number "202460249U". The technology includes a filter funnel for filtration and a liquid storage tank for collecting filtrate, and can further include a vacuum device. The filter funnel, the liquid storage tank and the vacuum device are connected in sequence. The pipeline connecting the filter funnel and the liquid storage tank is provided with a flange and a valve. The top of the liquid storage tank is provided with a liquid inlet, a hand hole for cleaning the liquid storage tank, a valve for connecting with the vacuum device, a vent valve and a vacuum gauge; the bottom is provided with a liquid discharge valve. Except the vacuum device, other components are made of high molecular organic material.

[0004] However, the technology does not involve the technical problems and technical solutions of the present application. SUMMARY

[0005] The present application aims to solve the technical problems of the prior art, and provides a solid-liquid separation and filtration device for material detection, which can accelerate the filtration speed, reduce solution evaporation and prevent contamination of solid substances when separating solid and liquid mixture in material detection.

[0006] To solve the above technical problems, the technical solutions adopted by the present application are as follows:

[0007] The application discloses a solid-liquid separation filtering device for material detection, which comprises a liquid storage tank, a filtering funnel body, a filtering net cup, an isolation pad cup, a filter disc, a sealing cover, an air suction pump, an air suction pipe, a high-pressure control valve, a low-pressure control valve, a filtering net support frame and a filtering net sheet.

[0008] The solid-liquid separation filtering device for material detection further comprises a liquid level indicator, a feeding pipe, a feeding control valve, a safety pipe, a safety valve, a liquid discharge valve and a liquid discharge pipe.

[0009] The solid-liquid separation filtering device for material detection further comprises a liquid level indicator, a feeding pipe, a feeding control valve, a safety pipe, a safety valve, a liquid discharge valve and a liquid discharge pipe.

[0010] The high-pressure control valve is arranged on the sealing cover and is a one-way valve, and the opening pressure of the high-pressure control valve is set to be 30kpa-50kpa.

[0011] The sealing cover is arranged on the top of the filtering funnel body, and the sealing cover is internally provided with a thread and a sealing ring.

[0012] The liquid level indicator is arranged on the liquid storage tank and is used for observing the height of the separated liquid in the liquid storage tank.

[0013] The low-pressure control valve is arranged on the liquid storage tank, is a one-way valve, and the opening pressure of the low-pressure control valve is set to 30kpa-50kpa; when the pressure difference between the air pressure in the liquid storage tank and the air pressure outside exceeds the opening pressure, the low-pressure control valve is arranged to be capable of being opened to form a structure capable of introducing sufficient air from the outside.

[0014] The isolation pad cup is a hollow cylindrical cup, and the material is preferably silica gel; the filter funnel body is arranged on the liquid storage tank, is a funnel-shaped hollow container, and the filter screen is a porous screen; the safety pipe is arranged on the sealing cover, the safety valve is arranged on the safety pipe, the liquid discharge guide pipe is arranged at the bottom of the liquid storage tank, and the liquid discharge valve is arranged on the liquid discharge guide pipe and is used for discharging the separated liquid out of the liquid storage tank.

[0015] The application also relates to a filtering method of a solid-liquid separation filtering device for material detection, which can accelerate the filtering speed, reduce solution volatilization and prevent pollution of solid substances when separating a solid-liquid mixture in material detection.

[0016] The filtering step of the filtering method of the solid-liquid separation filtering device for material detection is as follows:

[0017] S1. The filter disc is arranged at the bottom of the upper cylindrical body of the filter funnel body, the filter screen cup is arranged on the filter disc, the upper surface of the filter disc is tightly attached to the filter screen, the filter screen support frame is tightly attached to the inner wall of the upper cylindrical body of the filter funnel body, a suitable isolation pad cup is arranged in the filter screen cup, the filter funnel body is installed on the liquid storage tank and is screwed, and the sealing cover is installed on the filter funnel body and is screwed.

[0018] S2. All valves are closed, the air tightness of the detection device is detected, the safety valve is opened, the solid-liquid mixture is introduced from the feeding pipe through the feeding control valve, or the solid-liquid mixture is directly poured by unscrewing the sealing cover, and attention is paid to the fact that the height of the solid-liquid mixture should not be higher than the height of the isolation pad cup.

[0019] S3. The safety valve and the feeding control valve are closed, the sealing cover is screwed, the control switch is opened, the air pump is started, the air in the liquid storage tank is sucked into the space formed by the sealing cover and the upper cylindrical body of the filter funnel body, the air pressure at the upper part of the solid-liquid mixture is always higher than the air pressure in the liquid storage tank, the solid-liquid mixture can be quickly separated, the safety valve can be opened at any time in case of failure to avoid accidents, and the solid-liquid mixture can be quickly separated.

[0020] S4. The liquid level indicator shows that the liquid surface no longer continues to rise, indicating that the separation of the solid and the liquid is completed, the control switch is closed, the air pump stops working, the safety valve is opened, the air pressure on the inner wall of the whole device is adjusted to be the same as the air pressure outside, the liquid discharge valve is opened, and the separated liquid is discharged out of the liquid storage tank.

[0021] S5. Unscrew the sealing cover, take out the isolation pad cup, and take out the separated solid material with a medicine spoon or a glass rod, and perform subsequent treatment according to the properties of the solid material.

[0022] The opening pressure of the high-pressure control valve is set to 30-50 kPa, when the pressure difference between the space formed by the sealing cover and the upper cylinder of the filter funnel body and the external air pressure exceeds the opening pressure, the high-pressure control valve will be opened to discharge the excess air, reduce the internal air pressure, and ensure that the air pressure in the space formed by the sealing cover and the upper cylinder of the filter funnel body will not be too high; the opening pressure of the low-pressure control valve is set to 30-50 kPa, when the pressure difference between the liquid storage tank and the external air pressure exceeds the opening pressure, the low-pressure control valve will be opened to introduce sufficient air from the external environment, and ensure that the air pressure in the liquid storage tank will not be too low.

[0023] The technical scheme of the application has the following working principles and beneficial effects:

[0024] The solid-liquid separation filtering device and filtering method for material detection, the high-pressure control valve is arranged on the sealing cover and is a one-way valve. The opening pressure of the high-pressure control valve is set to 30-50 kpa. When the air pressure difference between the space composed of the sealing cover and the upper cylinder of the filtering funnel body and the outside air pressure exceeds the opening pressure, the high-pressure control valve will be opened to discharge the excess air, reduce the air pressure in the space, and ensure that the air pressure in the space composed of the sealing cover and the upper cylinder of the filtering funnel body will not be too high, and the safety hazard is eliminated. The low-pressure control valve is arranged on the liquid storage tank and is a one-way valve. The opening pressure of the low-pressure control valve is set to 30-50 kpa. When the air pressure difference between the liquid storage tank and the outside air pressure exceeds the opening pressure, the low-pressure control valve will be opened to introduce sufficient air from the outside, and ensure that the air pressure in the liquid storage tank will not be too low, and the safety hazard is eliminated. When filtering, the filter disc is arranged at the bottom of the upper cylinder of the filtering funnel body to ensure that the lower surface of the filter disc is tightly attached to the bottom of the upper cylinder of the filtering funnel body, then the filter screen cup is arranged on the filter disc to ensure that the upper surface of the filter disc is tightly attached to the filter screen, and the filter screen support frame is tightly attached to the inner wall of the upper cylinder of the filtering funnel body; then the appropriate isolation pad cup is arranged in the filter screen cup, the filtering funnel body is installed on the liquid storage tank and is screwed, the sealing cover is installed on the filtering funnel body and is screwed, all the valves are closed, the air tightness of the detection device is detected, and the safety valve is opened. The solid-liquid mixture is introduced from the feeding pipe by opening the feeding control valve, or the solid-liquid mixture is directly poured by unscrewing the sealing cover. It is noted that the height of the solid-liquid mixture should not be higher than the height of the isolation pad cup. The safety valve and the feeding control valve are closed, and the sealing cover is screwed; the control switch is opened, the air pump is started, the air in the liquid storage tank is sucked into the space composed of the sealing cover and the upper cylinder of the filtering funnel body, the air pressure at the upper part of the solid-liquid mixture is always higher than the air pressure in the liquid storage tank, the solid-liquid separation can be realized quickly, if a fault occurs during the separation, the safety valve can be opened at any time to avoid accidents; the liquid level detector detects that the liquid surface no longer continues to rise, which indicates that the solid-liquid separation is completed, the control switch is closed to stop the air pump, the safety valve is opened, the air pressure of the inner wall of the whole device is adjusted to be the same as the outside air pressure, the liquid discharge valve is opened to discharge the separated liquid from the liquid storage tank; the sealing cover is unscrewed, the isolation pad cup is taken out, the separated solid material is taken out by a medicine spoon or a glass rod, and subsequent treatment is performed according to the properties of the solid material. The opening pressure of the high-pressure control valve is set to 30-50 kpa. When the air pressure difference between the space composed of the sealing cover and the upper cylinder of the filtering funnel body and the outside air pressure exceeds the opening pressure, the high-pressure control valve will be opened to discharge the excess air, reduce the air pressure in the space, and ensure that the air pressure in the space composed of the sealing cover and the upper cylinder of the filtering funnel body will not be too high. The opening pressure of the low-pressure control valve is set to 30-50 kpa. When the air pressure difference between the liquid storage tank and the outside air pressure exceeds the opening pressure, the low-pressure control valve will be opened to introduce sufficient air from the outside, and ensure that the air pressure in the liquid storage tank will not be too low. BRIEF DESCRIPTION OF DRAWINGS

[0025] Brief description of the drawings and the reference signs in the drawings:

[0026] Figure 1 Structure diagram of the solid-liquid separation filter device for material detection according to the present application;

[0027] Figure 2 Structure diagram of the filter screen cup of the solid-liquid separation filter device for material detection according to the present application;

[0028] The reference signs in the drawings are as follows: 1. liquid storage tank; 2. filter funnel body; 3. filter screen cup; 4. isolation pad cup; 5. filter disc; 6. sealing cover; 7. liquid level indicator; 8. air extraction pump; 9. air extraction pipe; 10. feeding pipe; 11. feeding control valve; 12. high pressure control valve; 13. low pressure control valve; 14. safety pipe; 15. safety valve; 16. liquid discharge guide pipe; 17. liquid discharge valve; 18. conductive wire; 19. control switch; 20. power supply; 21. filter screen support frame; 22. filter screen. DETAILED DESCRIPTION

[0029] The specific embodiments of the present application and the shapes, structures, mutual positions and connection relationships between the parts, functions and working principles of the parts involved will be further described in detail below with reference to the drawings and the description of the embodiments:

[0030] As shown in the drawings Figure 1 , the drawings Figure 2As shown, the application is a solid-liquid separation filtering device for material detection, which comprises a liquid storage tank 1, a filtering funnel body 2, a filtering net cup 3, an isolation pad cup 4, a filter disc 5, a sealing cover 6, an air extraction pump 8, an air extraction pipe 9, a high-pressure control valve 12, a low-pressure control valve 13, a filtering net support frame 21 and a filtering net sheet 22. The filtering funnel body 2 is arranged on the liquid storage tank 1. The upper part of the filtering funnel body 2 is a hollow cylinder with threads on the outer wall, which is screwed and connected with the threaded part of the opening at the top of the liquid storage tank 1. The middle part of the filtering funnel body 2 is a hollow cone, and the lower part of the filtering funnel body 2 is a hollow circular tube. The filtering net cup 3 is arranged in the upper cylindrical body of the filtering funnel body 2 and is a cylindrical hollow cylindrical cup. The filtering net cup 3 comprises the filtering net support frame 21 and the meshed filtering net sheet 22 at the bottom. The filtering net support frame 21 is attached to the inner wall of the upper cylindrical body of the filtering funnel body 2. The height of the filtering net cup 3 is lower than the height of the top end of the filtering funnel body 2. The filter disc 5 is arranged at the bottom of the filtering net cup 3. The upper surface of the filter disc 5 is attached to the filtering net 24, and the lower surface of the filter disc 5 is attached to the bottom of the upper cylindrical body of the filtering funnel body 2. The isolation pad cup 4 is a hollow cylindrical cup, which is arranged in the filtering net cup 3 and is attached to the inner wall of the filtering net cup 3. Multiple circular holes are uniformly distributed at the bottom of the isolation pad cup 4, and the height of the isolation pad cup 4 is lower than that of the filtering net cup 3. The filter disc 5 can be selected according to requirements in terms of material, thickness and composite type. Different pore sizes are set according to the types and solid sizes of solid-liquid mixtures, which can prevent the filter disc 5 from contaminating the solid after solid-liquid separation. The above structure improves the technical solution according to the deficiencies in the prior art. The high-pressure control valve 12 is arranged on the sealing cover 6 and is a one-way valve. The opening pressure of the high-pressure control valve 12 is set to 30-50 kpa. When the air pressure difference between the space composed of the sealing cover 6 and the upper cylindrical body of the filtering funnel body and the external air pressure exceeds the opening pressure, the high-pressure control valve 12 will be opened to discharge the excess air, reduce the air pressure in the space and ensure that the air pressure in the space will not be too high, thereby eliminating the safety hazard. The low-pressure control valve 13 is arranged on the liquid storage tank 1 and is a one-way valve. The opening pressure of the low-pressure control valve 13 is set to 30-50 kpa. When the air pressure difference between the liquid storage tank 1 and the external air pressure exceeds the opening pressure, the low-pressure control valve 13 will be opened to introduce sufficient air from the external environment, ensure that the air pressure in the liquid storage tank 1 will not be too low and eliminate the safety hazard. During the filtering process, the filter disc 5 is placed at the bottom of the upper cylindrical body of the filtering funnel body 2 to ensure that the lower surface of the filter disc 5 is tightly attached to the bottom of the upper cylindrical body of the filtering funnel body 2. Then, the filtering net cup 3 is placed on the filter disc 5 to ensure that the upper surface of the filter disc 5 is tightly attached to the filtering net 24 and the filtering net support frame 21 is tightly attached to the inner wall of the upper cylindrical body of the filtering funnel body 2. Then, the appropriate isolation pad cup 4 is placed in the filtering net cup 3. The filtering funnel body 2 is installed on the liquid storage tank 1 and is screwed. The sealing cover 6 is installed on the filtering funnel body 2 and is screwed. All valves are closed, the air tightness of the detection device is detected, and the safety valve 15 is opened.Open the feeding control valve 11 from the feeding pipe 10 to introduce the solid-liquid mixture, or unscrew the sealing cover 6 to pour the solid-liquid mixture directly. Note that the height of the solid-liquid mixture should not be higher than the height of the isolation pad cup 4. Close the safety valve 15, the feeding control valve 11, and screw the sealing cover 6; open the control switch 19 and start the air pump 8 to pump the air in the liquid tank 1 into the space composed of the sealing cover 6 and the upper cylindrical body of the filter funnel body, so that the air pressure at the upper part of the solid-liquid mixture is always higher than the air pressure in the liquid tank 1, which can realize rapid separation of the solid and the liquid. If a fault occurs during the separation, the safety valve 15 can be opened at any time to avoid accidents. When the liquid level detector 7 detects that the liquid surface no longer continues to rise, it indicates that the separation of the solid and the liquid is completed, the control switch 19 is closed to stop the air pump 8, the safety valve 15 is opened, the air pressure in the inner wall of the entire device is adjusted to be the same as the air pressure outside, and then the liquid discharge valve 17 is opened to discharge the separated liquid out of the liquid tank 1. The sealing cover 6 is unscrewed, the isolation pad cup 4 is taken out, and the separated solid material is taken out with a medicine spoon or a glass rod for subsequent treatment according to the properties of the solid material. The opening pressure of the high-pressure control valve 12 is set to 30-50 kpa, when the pressure difference between the space composed of the sealing cover 6 and the upper cylindrical body of the filter funnel body and the outside air pressure exceeds the opening pressure, the high-pressure control valve 12 will be opened to discharge the excess air and reduce the air pressure in the space, so as to ensure that the air pressure in the space composed of the sealing cover 6 and the upper cylindrical body of the filter funnel body will not be too high. The opening pressure of the low-pressure control valve 13 is set to 30-50 kpa, when the pressure difference between the air pressure in the liquid tank 1 and the outside air pressure exceeds the opening pressure, the low-pressure control valve 13 will be opened to introduce sufficient air from the outside to ensure that the air pressure in the liquid tank 1 will not be too low. The solid-liquid separation and filtration device for material detection can accelerate the filtration speed, reduce the evaporation of the solution, and prevent the pollution of the solid material when separating the solid and liquid mixture in the material detection.

[0031] The solid-liquid separation and filtration device for material detection further comprises a liquid level detector 7, a feeding pipe 10, a feeding control valve 11, a safety pipe 14, a safety valve 15, a liquid discharge valve 17, and a liquid discharge pipe 16. The solid-liquid separation and filtration device for material detection further comprises a conductive wire 18, a control switch 19, and a power supply 20. One end of the conductive wire 18 is connected to the air pump 8, the other end is connected to the power supply 20, and the control switch 19 is located in the middle of the conductive wire 18 to control the opening and closing of the air pump 8.

[0032] The high-pressure control valve 12 is arranged on the sealing cover 6, and is a one-way valve, the opening pressure of the high-pressure control valve 12 is set to 30kpa-50kpa; when the air pressure difference between the space composed of the sealing cover 6 and the upper cylindrical body of the filter funnel body and the outside exceeds the opening pressure, the high-pressure control valve 12 is arranged to be able to open, so that the excess air is discharged, and the air pressure in the space is reduced. The above structure, the arrangement of the high-pressure control valve 12, by ensuring that the air pressure in the space composed of the sealing cover 6 and the upper cylindrical body of the filter funnel body is not too high, the safety hidden danger is excluded.

[0033] The sealing cover 6 is arranged on the top of the filter funnel body 2, the sealing cover 6 has a thread and a sealing ring in it, and the sealing cover 6 is tightly connected with the filter funnel body 2 when being installed on the filter funnel body 2. The above structure, the sealing cover can be conveniently and reliably connected with the filter funnel body to ensure the sealing.

[0034] The liquid level gauge 7 is arranged on the liquid storage tank 1, and is used for observing the height of the separated liquid in the liquid storage tank 1; one end of the air extraction pipe 9 is connected with the liquid storage tank 1, and the other end is connected with the sealing cover 6; the air extraction pump 8 is arranged on the air extraction pipe 9. The above structure, when the air extraction pump 8 works, the air in the liquid storage tank 1 is extracted into the space composed of the sealing cover 6 and the upper cylindrical body of the filter funnel body, so that the air pressure at the upper part of the solid-liquid mixture is always higher than the air pressure in the liquid storage tank 1, and the solid-liquid separation can be quickly realized; the feeding pipe 10 is arranged on the sealing cover 6; the feeding control valve 11 is arranged on the feeding pipe 10, and is used for controlling the solid-liquid mixture to enter the isolation pad cup 4.

[0035] The low-pressure control valve 13 is arranged on the liquid storage tank 1, and is a one-way valve, the opening pressure of the low-pressure control valve 13 is set to 30kpa-50kpa; when the air pressure difference between the liquid storage tank 1 and the outside exceeds the opening pressure, the low-pressure control valve 13 is arranged to be able to open, so that sufficient air is introduced from the outside. The above structure, the air pressure in the liquid storage tank 1 cannot be too low, and the safety hidden danger is excluded.

[0036] The isolation pad cup 4 is a hollow cylindrical cup, and the material is preferably silica gel; the filter funnel body 2 is arranged on the liquid storage tank 1, and is a funnel-shaped hollow container, and the filter screen 22 is a porous screen; the safety pipe 14 is arranged on the sealing cover 6, the safety valve 15 is arranged on the safety pipe 14, the liquid discharge guide pipe 16 is arranged at the bottom of the liquid storage tank 1, and the liquid discharge valve 17 is arranged on the liquid discharge guide pipe 16, and is used for discharging the separated liquid from the liquid storage tank 1. The above structure, when the solid-liquid mixture is completely discharged into the liquid storage tank 1, the safety valve 15 is opened, and the air pressure on the inner wall of the whole device is adjusted to be the same as the outside air pressure.

[0037] The application also relates to a filtering method of a solid-liquid separation filtering device for material detection, which can accelerate the filtering speed, reduce solution volatilization, and prevent pollution of solid substances when separating a solid-liquid mixture in material detection.

[0038] S1. Place the filter disc 5 on the bottom of the upper cylinder of the filter funnel body 2, make sure the lower surface of the filter disc 5 is tightly attached to the bottom of the upper cylinder of the filter funnel body 2, then place the filter screen cup 3 on the filter disc 5, make sure the upper surface of the filter disc 5 is tightly attached to the filter screen 24, and the filter screen support 21 is tightly attached to the inner wall of the upper cylinder of the filter funnel body 2; then place the appropriate isolation pad cup 4 in the filter screen cup 3, install the filter funnel body 2 on the liquid storage tank 1, and tighten; install the sealing cover 6 on the filter funnel body 2, and tighten; S2. Close all valves and check the air tightness of the device; open the safety valve 15. Open the feeding control valve 11 to introduce the solid-liquid mixture from the feeding pipe 10, or unscrew the sealing cover 6 to directly pour the solid-liquid mixture. Note that the height of the solid-liquid mixture should not be higher than the height of the isolation pad cup 4. S3. Close the safety valve 15 and the feeding control valve 11, and tighten the sealing cover 6; open the control switch 19 and start the air pump 8 to pump the air in the liquid storage tank 1 into the space composed of the sealing cover 6 and the upper cylinder of the filter funnel body, so that the air pressure above the solid-liquid mixture is always higher than the air pressure in the liquid storage tank 1, which can realize rapid separation of solid and liquid, and if a fault occurs during the process, the safety valve 15 can be opened at any time to avoid accidents; S4. When the liquid level detector 7 finds that the liquid surface no longer continues to rise, it indicates that the separation of solid and liquid is completed, the control switch 19 is closed to stop the air pump 8 from working, the safety valve 15 is opened, and the air pressure in the inner wall of the entire device is adjusted to be the same as the air pressure outside, then the liquid valve 18 is opened to discharge the separated liquid from the liquid storage tank 1; S5. Unscrew the sealing cover 6, take out the isolation pad cup 4, and use a medicine spoon or a glass rod to take out the separated solid material, and then perform subsequent processing according to the properties of the solid material. The filtering method of the solid-liquid separation filtering device for material detection can accelerate the filtering speed, reduce solution evaporation, and prevent pollution of the solid material when separating the solid-liquid mixture in material detection.

[0039] The opening pressure of the high-pressure control valve 12 is set to 30-50 kpa, when the air pressure difference between the space composed of the sealing cover 6 and the upper cylinder of the filter funnel body and the air pressure outside exceeds the opening pressure, the high-pressure control valve 12 will open to discharge excess air and reduce the air pressure in the space, to ensure that the air pressure in the space composed of the sealing cover 6 and the upper cylinder of the filter funnel body does not exceed the opening pressure; the opening pressure of the low-pressure control valve 13 is set to 30-50 kpa, when the air pressure difference between the liquid storage tank 1 and the air pressure outside exceeds the opening pressure, the low-pressure control valve 13 will open to introduce sufficient air from the outside, to ensure that the air pressure in the liquid storage tank 1 does not exceed the opening pressure.

[0040] As a specific embodiment of the solid-liquid separation filter device of the present application: including a liquid storage tank 1, a filter funnel body 2, a filter screen cup 3, a isolation pad cup 4, a filter disc 5, a sealing cover 6, a liquid level indicator 7, a suction pump 8, a suction pipe 9, a feeding pipe 10, a feeding control valve 11, a high pressure control valve 12, a low pressure control valve 13, a safety pipe 14, a safety valve 15, a liquid discharge valve 17, a liquid discharge conduit 16, a conductive wire 18, a control switch 19, a power supply 20, a filter screen support frame 21, a filter screen 22. The liquid storage tank 1 is a container for storing the filtered liquid of the solid-liquid separation filter device. The top opening of the liquid storage tank 1 is provided with threads and a sealing ring. The filter funnel body 2 is arranged on the liquid storage tank 1. It is a funnel-shaped hollow container. The upper part of the filter funnel body 2 is a hollow cylinder with threads on the outer wall, which matches the threads at the top opening of the liquid storage tank 1 and can be sealed. The middle part is a hollow cone, and the lower part is a hollow circular pipe. The filter screen cup 3 is arranged in the upper cylindrical body of the filter funnel body 2 and is a cylindrical hollow cylindrical cup, which is composed of the filter screen support frame 21 and the bottom meshed filter screen 22. The filter screen support frame 21 closely adheres to the inner wall of the upper cylindrical body of the filter funnel body 2. The filter screen 22 is a meshed screen. After installation, the height of the filter screen cup 3 is slightly lower than the height of the top end of the filter funnel body 2. The filter disc 5 is arranged at the bottom of the filter screen cup 3, with the upper surface closely adhering to the filter screen 24 and the lower surface closely adhering to the bottom of the upper cylindrical body of the filter funnel body 2. The filter disc 5 can be selected according to requirements in terms of material, thickness, and composite type. The isolation pad cup 4 is a hollow cylindrical cup, preferably made of silica gel. The isolation pad cup 4 is arranged in the filter screen cup 3 and closely adheres to the inner wall of the filter screen cup 3. The bottom of the isolation pad cup 4 is uniformly distributed with multiple circular holes of equal size. The aperture of the holes can be set according to the type of solid-liquid mixture and the size of the solid, and the function is to prevent the filter disc 5 from contaminating the solid after solid-liquid separation. After installation, the height of the isolation pad cup 4 is slightly lower than that of the filter screen cup 3. The sealing cover 6 is arranged at the top of the filter funnel body 2 and has threads and a sealing ring inside to tightly close the filter funnel body 2. The liquid level indicator 7 is arranged on the liquid storage tank 1 and is used to observe the height of the separated liquid in the liquid storage tank 1. One end of the suction pipe 9 is connected to the liquid storage tank 1, and the other end is connected to the sealing cover 6. The suction pump 8 is arranged on the suction pipe 9. When the suction pump 8 is working, it will suck the air in the liquid storage tank 1 into the space composed of the sealing cover 6 and the upper cylindrical body of the filter funnel body, so that the air pressure at the upper part of the solid-liquid mixture is always higher than that in the liquid storage tank 1, and the solid-liquid separation can be realized quickly. The feeding pipe 10 is arranged on the sealing cover 6. The feeding control valve 11 is arranged on the feeding pipe 10 and is used to control the solid-liquid mixture entering the isolation pad cup 4. The high pressure control valve 12 is arranged on the sealing cover 6 and is a one-way valve.The opening pressure of the high pressure control valve 12 is set to 30-50 kPa. When the pressure difference between the space formed by the sealing cover 6 and the upper cylindrical body of the filter funnel and the outside exceeds the opening pressure, the high pressure control valve 12 will open to discharge the excess air and reduce the pressure in the space, thus ensuring that the pressure in the space formed by the sealing cover 6 and the upper cylindrical body of the filter funnel will not be too high, and the safety hazard is eliminated. The low pressure control valve 13 is arranged on the liquid storage tank 1 and is a one-way valve. The opening pressure of the low pressure control valve 13 is set to 30-50 kPa. When the pressure difference between the liquid storage tank 1 and the outside exceeds the opening pressure, the low pressure control valve 13 will open to introduce sufficient air from the outside, thus ensuring that the pressure in the liquid storage tank 1 will not be too low, and the safety hazard is eliminated. The safety pipe 14 is arranged on the sealing cover 6. The safety valve 15 is arranged on the safety pipe 14. When the solid-liquid mixture is completely discharged into the liquid storage tank 1, the safety valve 15 is opened to adjust the pressure on the inner wall of the entire device to the same as the outside. The liquid discharge conduit 16 is arranged at the bottom of the liquid storage tank 1. The liquid discharge valve 17 is arranged on the liquid discharge conduit 16 and is used to discharge the separated liquid from the liquid storage tank 1. The conductive wire 18 is arranged at one end on the air suction pump 8 and at the other end on the power supply 20. The control switch 19 is arranged in the middle of the conductive wire 18 and is used to control the opening and closing of the air suction pump 8.

[0041] As a specific embodiment of the filter device for solid-liquid separation of the present application: the filtering method is as follows: 1. When the device is set, a filter disc 5 of appropriate size is placed on the bottom of the upper cylinder of the filter funnel body 2, ensuring that the lower surface of the filter disc 5 is tightly attached to the bottom of the upper cylinder of the filter funnel body 2. Then a filter screen cup 3 is placed on the filter disc 5, ensuring that the upper surface of the filter disc 5 is tightly attached to the filter screen 24, and the filter screen support 21 is tightly attached to the inner wall of the upper cylinder of the filter funnel body 2. Then a suitable isolation pad cup 4 is placed in the filter screen cup 3. The filter funnel body 2 is installed on the liquid storage tank 1 and tightened. The sealing cover 6 is installed on the filter funnel body 2 and tightened. 2. Close all valves and check the air tightness of the device. 3. Open the safety valve 15. Open the feeding control valve 11 to introduce the solid-liquid mixture from the feeding pipe 10, or unscrew the sealing cover 6 to directly pour in the solid-liquid mixture. Note that the height of the solid-liquid mixture should not be higher than the height of the isolation pad cup 4. 4. Close the safety valve 15, the feeding control valve 11, and tighten the sealing cover 6. 5. Open the control switch 19 and start the air pump 8 to pump the air in the liquid storage tank 1 into the space composed of the sealing cover 6 and the upper cylinder of the filter funnel body, so that the air pressure above the solid-liquid mixture is always higher than the air pressure in the liquid storage tank 1, which can realize rapid separation of solid and liquid. The opening pressure of the high-pressure control valve 12 is set to 30-50 kpa. When the air pressure difference between the space composed of the sealing cover 6 and the upper cylinder of the filter funnel body and the outside air pressure exceeds the opening pressure, the high-pressure control valve 12 will open to discharge the excess air and reduce the air pressure in the space, ensuring that the air pressure in the space composed of the sealing cover 6 and the upper cylinder of the filter funnel body does not exceed the opening pressure. The opening pressure of the low-pressure control valve 13 is set to 30-50 kpa. When the air pressure difference between the liquid storage tank 1 and the outside air pressure exceeds the opening pressure, the low-pressure control valve 13 will open to introduce sufficient air from the outside, ensuring that the air pressure in the liquid storage tank 1 does not exceed the opening pressure. 6. When the liquid level detector 7 finds that the liquid surface no longer continues to rise, it indicates that the separation of solid and liquid is complete. Close the control switch 19 to stop the air pump 8, open the safety valve 15, and adjust the air pressure in the entire device to the same as the outside air pressure, then open the liquid discharge valve 18 to discharge the separated liquid from the liquid storage tank 1. 7. Unscrew the sealing cover 6, take out the isolation pad cup 4, and use a medicine spoon or glass rod to take out the separated solid material, and then perform subsequent treatment according to the properties of the solid material. 8. The device is cleaned with distilled water.

[0042] The present application has been described above in conjunction with the drawings, and it is obvious that the specific implementation of the present application is not limited by the above method. Any improvement or direct application of the concept and technical solution of the present application to other occasions is within the scope of protection of the present application.

Claims

1. A solid-liquid separation and filtration device for material detection, characterized in that: The invention comprises a liquid storage tank (1), a filter funnel body (2), a filter screen cup (3), an isolation pad cup (4), a filter disc (5), a sealing cover (6), an air pump (8), an air extraction pipe (9), a high-pressure control valve (12), a low-pressure control valve (13), a filter screen support frame (21), and a filter screen (22). The filter funnel body (2) is arranged on the liquid storage tank (1). The upper part of the filter funnel body (2) is a hollow cylinder with a thread on the outer wall, which is screwed and connected to the threaded part at the top opening of the liquid storage tank (1). The middle part of the filter funnel body (2) is a hollow cone, and the lower part of the filter funnel body (2) is a hollow circular tube. The filter screen cup (3) is arranged in the upper cylinder of the filter funnel body (2) and is a cylindrical hollow cylindrical cup. The filter cup (3) comprises a filter support frame (21) and a mesh-shaped porous filter sheet (22) at the bottom, wherein the filter support frame (21) is fitted with the inner wall of the upper cylinder of the filter funnel body (2); the height of the filter cup (3) is lower than the top height of the filter funnel body (2); the filter sheet (5) is arranged at the bottom of the filter cup (3), the upper surface of the filter sheet (5) is fitted with the filter screen (24), and the lower surface of the filter sheet (5) is fitted with the bottom of the upper cylinder of the filter funnel body (2); the isolation pad cup (4) is a hollow cylindrical cup, the isolation pad cup (4) is arranged in the filter cup (3), and is fitted with the filter cup (3), and a plurality of circular holes are evenly distributed on the bottom of the isolation pad cup (4), and the height of the isolation pad cup (4) is lower than the filter cup (3); The high-pressure control valve (12) is provided on the sealing cover (6) and is a one-way valve. The opening pressure of the high-pressure control valve (12) is set to 30kPa to 50kPa. When the difference between the air pressure in the space formed by the sealing cover (6) and the upper cylindrical body of the filter funnel and the external air pressure exceeds the opening pressure, the high-pressure control valve (12) is set to be able to open, discharge excess air, and reduce the internal air pressure. The solid-liquid separation and filtration device for material detection further comprises a liquid level gauge (7), a feeding pipe (10), a feeding control valve (11), a safety pipe (14), a safety valve (15), a drain valve (17), and a drain conduit (16); the liquid level gauge (7) is arranged on the liquid storage tank (1) and is used to observe the height of the liquid separated in the liquid storage tank (1); one end of the air extraction pipe (9) is connected to the liquid storage tank (1), and the other end is connected to the sealing cover (6); the air extraction pump (8) is arranged on the air extraction pipe (9), and when the air extraction pump (8) is working, the air in the liquid storage tank (1) is extracted into the space formed by the sealing cover (6) and the upper cylinder of the filter funnel body, so that the air pressure above the solid-liquid mixture is always higher than the air pressure in the liquid storage tank (1), thereby realizing rapid separation of solid and liquid; the feeding pipe (10) is arranged on the sealing cover (6); the feeding control valve (11) is arranged on the feeding pipe (10); The low-pressure control valve (13) is provided on the liquid storage tank (1) and is a one-way valve. The opening pressure of the low-pressure control valve (13) is set to 30kPa to 50kPa. When the difference between the air pressure in the liquid storage tank (1) and the air pressure outside exceeds the opening pressure, the low-pressure control valve (13) is set to a structure capable of opening and introducing a sufficient amount of air from the outside.

2. The solid-liquid separation and filtration device for material detection according to claim 1, characterized in that: The solid-liquid separation and filtering device for material detection comprises a conductive wire (18), a control switch (19), and a power supply (20). One end of the conductive wire (18) is connected to the vacuum pump (8), and the other end is connected to the power supply (20). The control switch (19) is located in the middle of the conductive wire (18) and is used to control the switch of the vacuum pump (8).

3. The solid-liquid separation and filtration device for material detection according to claim 1 or 2, characterized in that: The sealing cover (6) is arranged on the top of the filter funnel body (2), and a thread and a sealing ring are provided inside the sealing cover (6). When the sealing cover (6) is installed on the filter funnel body (2), it is tightly connected to the filter funnel body (2).

4. The solid-liquid separation and filtration device for material detection according to claim 1 or 2, characterized in that: The isolation pad cup (4) is a hollow cylindrical cup made of silica gel; the filter funnel (2) is arranged on the liquid storage tank (1) and is a funnel-shaped hollow container, and the filter mesh (22) is a porous mesh; the safety tube (14) is arranged on the sealing cover (6), the safety valve (15) is arranged on the safety tube (14), the drainage conduit (16) is arranged at the bottom of the liquid storage tank (1), and the drainage valve (17) is arranged on the drainage conduit (16) for discharging the separated liquid from the liquid storage tank (1).

5. The filtering method according to any one of claims 1 to 4, wherein: The filtering steps of the filtering method of the solid-liquid separation filtering device for material detection are as follows: S1. Place the filter disc (5) on the bottom of the upper cylinder of the filter funnel (2), and then place the filter screen cup (3) on the filter disc (5), ensuring that the upper surface of the filter disc (5) is tightly fitted with the filter screen (24), and the filter screen support frame (21) is tightly fitted with the inner wall of the upper cylinder of the filter funnel (2); then place a suitable isolation cup (4) in the filter screen cup (3), install the filter funnel (2) on the liquid storage tank (1), and tighten it; install the sealing cover (6) on the filter funnel (2), and tighten it; S2. Close all valves and check the air tightness of the filter device; open the safety valve (15); open the feeding control valve (11) and introduce the solid-liquid mixture from the feeding pipe (10), or unscrew the sealing cap (6) and pour the solid-liquid mixture directly; pay attention to the height of the solid-liquid mixture, which should not be higher than the height of the isolation cup (4); S3. Close the safety valve (15) and the feeding control valve (11), and tighten the sealing cover (6); open the control switch (19), start the vacuum pump (8), and draw the air in the liquid storage tank (1) into the space formed by the sealing cover (6) and the upper cylindrical body of the filter funnel, so that the air pressure above the solid-liquid mixture is always higher than the air pressure in the liquid storage tank (1), so as to achieve rapid separation of solid and liquid. If a fault occurs during this period, the safety valve (15) can be opened at any time to avoid accidents; S4. The liquid level indicator (7) shows that the liquid level no longer rises, indicating that the separation of solid and liquid is complete. The control switch (19) is closed to stop the vacuum pump (8). The safety valve (15) is opened. After the air pressure on the inner wall of the entire device is adjusted to the same as the external air pressure, the drain valve (17) is opened to discharge the separated liquid into the liquid storage tank (1). S5. Unscrew the sealing cap (6), remove the isolation cup (4), and use a medicine spoon or glass rod to remove the separated solid matter, and perform subsequent treatment according to the properties of the solid matter.

6. The filtering method of the solid-liquid separation filtering device for material detection according to claim 5, characterized in that: The opening pressure of the high-pressure control valve (12) is set to 30-50 kPa. When the pressure difference between the air pressure in the space formed by the sealing cover (6) and the upper cylinder of the filter funnel body and the outside air pressure exceeds the opening pressure, the high-pressure control valve (12) will open to discharge excess air and reduce the air pressure therein, thereby ensuring that the air pressure in the space formed by the sealing cover (6) and the upper cylinder of the filter funnel body is not too high. The opening pressure of the low-pressure control valve (13) is set to 30-50 kPa. When the pressure difference between the air pressure in the liquid storage tank (1) and the outside air pressure exceeds the opening pressure, the low-pressure control valve (13) will open to introduce sufficient air from the outside, thereby ensuring that the air pressure in the liquid storage tank (1) is not too low.

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