Automatic switching device for silica gel filter

Abstract

The utility model provides a kind of silica gel filter automatic switching device, including silica gel dryer, first silica gel filter, second silica gel filter and cooler;The silica gel dryer is connected with first silica gel filter by first inlet pipeline, and is connected with second silica gel filter by second inlet pipeline, and first inlet pipeline and second inlet pipeline are parallelly arranged;The first silica gel filter is connected with cooler by first outlet pipeline, and second silica gel filter is connected with cooler by second outlet pipeline, and first outlet pipeline and second outlet pipeline are parallelly arranged.The utility model utilizes differential pressure gauge to detect the plugging condition of silica gel filter, and automatically switches standby silica gel filter by cut-off valve, with the characteristics of easy maintenance and long service life.

Description

Technical Field

[0001] This utility model belongs to the field of chemical metallurgy technology and relates to an automatic switching device for silicone filters. Background Technology

[0002] Vinylidene fluoride (VDF) production uses dichlorofluoroethane (R142b) as raw material. After vaporization and preheating, it is cracked to obtain crude VDF gas. After cooling and dust removal, the crude VDF gas is washed with water and alkali to remove acidic gases such as hydrogen chloride and hydrogen fluoride. After compression, silica gel dryer to intercept silica gel particles, and distillation, qualified VDF is obtained. In the above production process, after the silica gel dryer has been running for a period of time, the silica gel inside will decompose into fine particles, which need to be intercepted by the internal mesh of the silica gel filter to prevent them from entering the downstream system. When the internal mesh of the silica gel filter becomes clogged, a backup filter needs to be switched on site. At this time, the backup filter needs to be manually switched on site, which is cumbersome and inefficient. Utility Model Content

[0003] The purpose of this invention is to address the problems existing in the prior art by providing an automatic switching device for silicone filters. This device solves the problem of cumbersome and inefficient manual switching of the backup filter on-site when the internal mesh of the silicone filter becomes clogged and a backup filter needs to be used.

[0004] Therefore, the present invention adopts the following technical solution: An automatic switching device for silica gel filters includes a silica gel dryer, a first silica gel filter, a second silica gel filter, and a cooler; The silica gel dryer is connected to the first silica gel filter through a first inlet pipe and to the second silica gel filter through a second inlet pipe, and the first inlet pipe and the second inlet pipe are arranged in parallel. The first silicone filter is connected to the cooler through the first outlet pipe, and the second silicone filter is connected to the cooler through the second outlet pipe, with the first outlet pipe and the second outlet pipe being arranged in parallel.

[0005] The first silicone filter is equipped with a first differential pressure gauge, which is connected to the first inlet pipe and the first outlet pipe respectively.

[0006] The second silicone filter is equipped with a second differential pressure gauge, which is connected to the second inlet pipe and the second outlet pipe respectively.

[0007] The first inlet pipe is equipped with a first shut-off valve, the second inlet pipe is equipped with a third shut-off valve, the first outlet pipe is equipped with a second shut-off valve, and the second outlet pipe is equipped with a fourth shut-off valve.

[0008] The beneficial effects of this utility model are as follows: During use, this utility model uses a differential pressure gauge to detect the blockage of the silicone filter and automatically switches to a backup silicone filter via a shut-off valve. It is simple to operate, improves work efficiency, and features low manufacturing cost, ease of use, easy maintenance, and long service life, making it suitable for widespread application. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the device structure of this utility model.

[0010] In the diagram, 1-Silica gel dryer, 2-First inlet pipe, 3-First shut-off valve, 4-Second inlet pipe, 5-Third shut-off valve, 6-Second differential pressure gauge, 7-First silica gel filter, 8-Second silica gel filter, 9-First outlet pipe, 10-First differential pressure gauge, 11-Second shut-off valve, 12-Fourth shut-off valve, 13-Second outlet pipe, 14-Cooler. Detailed Implementation

[0011] The technical solution of this utility model will be described below with reference to the accompanying drawings and implementation methods.

[0012] like Figure 1 As shown, an automatic switching device for silica gel filters includes a silica gel dryer 1, a first silica gel filter 7, a second silica gel filter 8, and a cooler 14.

[0013] The silica gel dryer 1 is connected to the first silica gel filter 7 through the first inlet pipe 2 and to the second silica gel filter 8 through the second inlet pipe 4, and the first inlet pipe 2 and the second inlet pipe 4 are arranged in parallel.

[0014] The first silicone filter 7 is connected to the cooler 14 through the first outlet pipe 9, and the second silicone filter 8 is connected to the cooler 14 through the second outlet pipe 13. The first outlet pipe 9 and the second outlet pipe 13 are arranged in parallel.

[0015] The first silicone filter 7 is equipped with a first differential pressure gauge 10, which is connected to the first inlet pipe 2 and the first outlet pipe 9 respectively; the second silicone filter 8 is equipped with a second differential pressure gauge 6, which is connected to the second inlet pipe 4 and the second outlet pipe 13 respectively.

[0016] The first inlet pipe 2 is equipped with a first shut-off valve 3, the first outlet pipe 9 is equipped with a second shut-off valve 11, the second inlet pipe 4 is equipped with a third shut-off valve 5, and the second outlet pipe 13 is equipped with a fourth shut-off valve 12.

[0017] The first differential pressure gauge 10, the second differential pressure gauge 6, the first shut-off valve 3, the second shut-off valve 11, the third shut-off valve 5, and the fourth shut-off valve 12 in this utility model are all electrically connected to the control system; the above control principles and connection methods are all existing technologies, so they will not be described in detail here.

[0018] The working principle of this invention is that when the used silicone filter becomes clogged, the system automatically opens the inlet and outlet shut-off valves of the backup silicone filter and closes the inlet and outlet shut-off valves of the used silicone filter; the specific usage process is as follows: If the first silicone filter 7 is in use, and the first differential pressure gauge 10 detects a differential pressure greater than 20 kPa, it is determined that a blockage has occurred. The control system automatically opens the third shut-off valve 5 and the fourth shut-off valve 12, and closes the first shut-off valve 3 and the second shut-off valve 11. If the second silicone filter 8 is in use, and the second differential pressure gauge 6 detects a differential pressure greater than 20 kPa, it is determined that a blockage has occurred. The control system automatically opens the first shut-off valve 3 and the second shut-off valve 11, and closes the third shut-off valve 5 and the fourth shut-off valve 12.

Claims

1. An automatic switching device for silicone filters, characterized in that, Includes a silica gel dryer (1), a first silica gel filter (7), a second silica gel filter (8), and a cooler (14); The silica gel dryer (1) is connected to the first silica gel filter (7) through the first inlet pipe (2) and to the second silica gel filter (8) through the second inlet pipe (4), and the first inlet pipe (2) and the second inlet pipe (4) are arranged in parallel. The first silicone filter (7) is connected to the cooler (14) through the first outlet pipe (9), and the second silicone filter (8) is connected to the cooler (14) through the second outlet pipe (13). The first outlet pipe (9) and the second outlet pipe (13) are arranged in parallel.

2. The automatic switching device for a silicone filter according to claim 1, characterized in that, The first silicone filter (7) is equipped with a first differential pressure gauge (10), which is connected to the first inlet pipe (2) and the first outlet pipe (9) respectively.

3. The automatic switching device for a silicone filter according to claim 1, characterized in that, The second silicone filter (8) is equipped with a second differential pressure gauge (6), which is connected to the second inlet pipe (4) and the second outlet pipe (13) respectively.

4. The automatic switching device for a silicone filter according to claim 1, characterized in that, The first inlet pipe (2) is equipped with a first shut-off valve (3).

5. The automatic switching device for a silicone filter according to claim 1, characterized in that, The second inlet pipe (4) is equipped with a third shut-off valve (5).

6. The automatic switching device for a silicone filter according to claim 1, characterized in that, The first outlet pipe (9) is equipped with a second shut-off valve (11).

7. The automatic switching device for a silicone filter according to claim 1, characterized in that, The second outlet pipe (13) is equipped with a fourth shut-off valve (12).

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