Filtering device for dangerous materials

Abstract

A filtering device for dangerous materials comprises a feeding pipe, the feeding pipe is sequentially communicated with a rough filtering part and a fine filtering tank, the rough filtering part comprises a plurality of rough filtering tanks which are connected to the feeding pipe in parallel through branch pipes, the rough filtering tanks are communicated with pressurizing pipes and provided with pressure gauges, and valves are installed on the branch pipes communicated with the two ends of the rough filtering tanks. The filter is used for solving the problems of low filter pressing speed, high safety risk, complicated operation and easiness in blockage of the existing filter.

Description

Technical Field

[0001] The utility model relates to a filtering device for dangerous materials. Background Art

[0002] In the current production of APIs, the existing filtration technology mainly uses traditional bag filters for filtration, which has the following disadvantages:

[0003] 1. Slow filtration speed: When processing materials with fine particle size and risk of spontaneous combustion (such as palladium carbon) and corrosive materials (such as trifluoroacetic anhydride), this is mainly due to the increased difficulty of filtration caused by the characteristics of these materials.

[0004] 2. High safety risk: When the filter press volume is limited and needs to be replaced mid-cycle, the operation is complicated and poses a high safety risk. Especially when handling flammable, explosive or corrosive materials, frequent replacement of filter bags may cause safety accidents.

[0005] 3. Complex operation: If hazardous materials (such as palladium carbon) need to be coarsely filtered and finely filtered at the same time, several sets of equipment need to be operated simultaneously, and a large number of hoses need to be used for connection, which increases the complexity and cost of the operation and is accompanied by the risk of leakage.

[0006] 4. Easy to clog: During the filtration process, the material may precipitate and clog the filter press, affecting the filtration efficiency and effect, and may cause danger during the treatment process. Utility Model Content

[0007] In order to solve the above problems of the prior art, the purpose of the present invention is to provide a filtering device for hazardous materials, which is used to solve the problems of slow filtration speed, high safety risks, complex operation and easy clogging of existing filters.

[0008] In order to solve the above problems, the technical solution of the utility model is:

[0009] A filtering device for hazardous materials includes a feed pipe, which is connected to a coarse filter element and a fine filter tank in sequence. The coarse filter element includes multiple coarse filter tanks connected in parallel to the feed pipe through branch pipes. A pressurizing pipe and a pressure gauge are connected to the coarse filter tanks, and valves are installed on the branch pipes connected to both ends of the coarse filter tanks.

[0010] A heating jacket is provided outside the coarse filter tank.

[0011] The coarse filter element includes two coarse filter tanks, and the two coarse filter tanks are connected to the feed pipe through a three-way valve.

[0012] An observation window is installed on the coarse filter tank.

[0013] A liquid level switch is installed on the fine filter tank, and the valve is a solenoid valve. The liquid level switch is connected to the controller input end, and the solenoid valve is connected to the controller output end.

[0014] The filter unit is mounted on a trailer.

[0015] The beneficial effects of the utility model are:

[0016] 1. Increase the filtration speed: By quickly switching the three-way valve, the filtration speed can be accelerated, especially when processing difficult materials, which can effectively avoid the decrease in filtration speed caused by material accumulation;

[0017] 2. Reduce safety risks: The number of times the filter needs to be replaced and disassembled is reduced, thereby reducing safety risks during operation. At the same time, the addition of a heating jacket helps maintain the temperature inside the cylinder and prevents material precipitation from clogging the pipeline;

[0018] 3. Simplify the operation process: The device can simultaneously realize the steps of coarse filtration and fine filtration, without the need for multiple sets of equipment to operate simultaneously, which simplifies the operation process and improves work efficiency.

[0019] 4. Improve filtration efficiency: Multiple parallel coarse filter tanks are used for coarse filtration, and fine filter tanks are used for fine filtration. Fine filtration is achieved through filter elements with smaller pore sizes, which improves filtration efficiency and quality.

[0020] 5. Easy to move and maintain: The filter unit is mounted on a trailer, making it easy to move and use in different production scenarios. At the same time, the modular design also facilitates maintenance and component replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0023] Figure 2 It is a structural diagram of the present utility model.

[0024] In the figure: trailer 1, pressure gauge 2, three-way valve 3, coarse filter tank 4, observation window 5, heating jacket 6, fine filter tank 7, pressurizing pipe 8, valve 9, feed pipe 10, controller 11, liquid level switch 12. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] A filtering device for hazardous materials includes a feed pipe 10, which is connected to a coarse filter element and a fine filter tank 7 in sequence. The coarse filter element includes a plurality of coarse filter tanks 4 connected in parallel to the feed pipe 10 through branch pipes. A pressurizing pipe 8 and a pressure gauge 2 are connected to the coarse filter tank 4. Valves 9 are installed on the branch pipes connected to both ends of the coarse filter tank 4. The coarse filter tank 4 adopts bag filtration, and the fine filter tank 7 adopts filter element filtration.

[0027] During use, the material enters one of the coarse filter tanks 4 through the feed pipe 10, and then 3ba of nitrogen is added to the coarse filter tank 4 through the pressure pipe 8. The material enters the fine filter tank 7 under the push of the nitrogen, and the material filtered by the fine filter tank 7 finally enters the reactor; when the material in the coarse filter tank 4 accumulates to a certain height, the valves 9 on the upper and lower ends of the branch pipes of the coarse filter tank 4 are closed, and the valve 9 on the branch pipe connected to the other coarse filter tank 4 is opened, and the material is coarsely filtered by the other coarse filter tank 4.

[0028] A heating jacket 6 is provided outside the coarse filter tank 4. By continuously supplying hot water into the heating jacket 6, the heat preservation function of the coarse filter tank 4 is achieved, and the pipeline is prevented from being blocked after the material precipitates.

[0029] The coarse filter element includes two coarse filter tanks 4, which are connected to the feed pipe 10 via a three-way valve 3. When in use, the valves 9 on the two coarse filter tanks 4 can be replaced with the three-way valve 3 to facilitate switching between the two coarse filter tanks 4.

[0030] An observation window 5 is installed on the coarse filter tank 4. The observation window 5 can be used to conveniently observe the coarse filtration of the material.

[0031] A liquid level switch 12 is mounted on the fine filter tank 7. The valve 9 is a solenoid valve. The liquid level switch 12 is connected to the input of a controller 11, and the solenoid valve is connected to the output of the controller 11. The controller 11 uses the Shanghai Renmin ZB-DF96DK model. When the liquid level switch 12 detects that the material in the coarse filter tank 4 has reached the set level, it automatically switches to the next coarse filter tank 4 for filtration, achieving an automatic tank switching function and improving the reliability of the filtration device during use.

[0032] The filtering device is mounted on a trailer 1. The trailer 1 makes the entire device easy to move and convenient to use in different production scenarios.

[0033] The contents described in the embodiments of this specification are merely an enumeration of the implementation forms of the utility model concept. The protection scope of the utility model should not be regarded as limited to the specific forms described in the embodiments. The protection scope of the utility model also extends to equivalent technical means that can be thought of by those skilled in the art based on the concept of the utility model.

Claims

1. A filter device for hazardous materials, characterized by: The invention comprises a feed pipe (10), the feed pipe (10) being connected to a coarse filter element and a fine filter tank (7) in sequence, the coarse filter element comprising a plurality of coarse filter tanks (4) connected in parallel to the feed pipe (10) via branch pipes, a pressure pipe (8) being connected to the coarse filter tanks (4) and a pressure gauge (2) being installed, and valves (9) being installed on the branch pipes connected to both ends of the coarse filter tanks (4).

2. A filter device for hazardous materials according to claim 1, characterized in that: A heating jacket (6) is provided outside the coarse filter tank (4).

3. The filter device for hazardous materials according to claim 1, characterized in that: The coarse filter element comprises two coarse filter tanks (4), and the two coarse filter tanks (4) are connected to the feed pipe (10) via a three-way valve.

4. The filter device for hazardous materials according to claim 1, characterized in that: An observation window (5) is installed on the coarse filter tank (4).

5. A filter device for hazardous materials according to any one of claims 1 to 4, characterized in that: A liquid level switch (12) is installed on the fine filter tank (7), the valve (9) is a solenoid valve, the liquid level switch (12) is connected to the input end of the controller (11), and the solenoid valve is connected to the output end of the controller (11).

6. A filter device for hazardous materials according to any one of claims 1 to 4, characterized in that: The filter unit is mounted on a trailer (1).

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