Fluorine-containing chemical storing and conveying device

Abstract

The utility model relates to the technical field of fluorine chemical industry, provides a storing and conveying device for fluorine-containing chemicals, and solves the problem of environmental pollution caused by design defects of existing equipment. The device comprises a storage tank; the storage tank is arranged on the fixed seat, a plurality of annular flow guide grooves are formed in the fixed seat, flow guide channels are formed in the bottoms of the annular flow guide grooves, annular flow guide cover plates are arranged in the annular flow guide grooves in a sliding mode, and flexible scraping strips are arranged on the tops of the flow guide cover plates; the fixed seat is arranged on the fixed plate, the fixed plate is provided with liquid collecting ports communicated with the flow guide channels, and the bottom of the fixed plate is provided with a liquid collecting box communicated with the liquid collecting ports; and the escape amount of the fluorine-containing wastewater is reduced through dynamic matching of the annular flow guide groove and the sliding flow guide cover plate.

Description

Technical Field

[0001] This utility model relates to the field of fluorochemical technology, specifically to a storage and transportation device for fluorinated chemicals. Background Technology

[0002] With the rapid development of semiconductor manufacturing, new energy batteries, and high-end chemical industries, the demand for storage and transportation of fluorinated chemicals (such as hydrofluoric acid and ammonium fluoride) has increased significantly. However, these chemicals are highly corrosive, permeable, and volatile, placing stringent requirements on the sealing, corrosion resistance, and leakage prevention of storage devices. The regular cleaning of traditional fluorinated gas storage devices poses a serious environmental pollution risk. For example, a storage device for transporting fluorinated chemical production, as proposed in Chinese Patent Publication No. CN210372875U, includes a fluorinated gas storage tank and a trolley fixing plate. During spray cleaning, fluorinated wastewater leaks through the gap between the fluorinated gas storage tank and the trolley fixing plate, polluting the environment. Utility Model Content

[0003] Therefore, in view of the above problems, this utility model provides a storage and transportation device for fluorinated chemicals, which solves the problem of environmental pollution caused by design defects in existing equipment.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A storage and transport device for fluorinated chemicals, comprising:

[0006] Storage tank;

[0007] A fixed base is provided, the storage tank is disposed on the fixed base, the fixed base is provided with a plurality of annular guide grooves, each annular guide groove is provided with a guide channel at the bottom, an annular guide cover is slidably disposed in each annular guide groove, and each guide cover is provided with a flexible scraping strip at the top.

[0008] A fixing plate is provided, the fixing seat is provided on the fixing plate, the fixing plate is provided with a liquid collection port communicating with each of the flow channels, and the bottom of the fixing plate is provided with a liquid collection box communicating with each of the liquid collection ports.

[0009] Furthermore, the inner wall of each of the flow channels is provided with a fluoride-repellent coating.

[0010] Furthermore, the storage tank has circumferentially distributed guide ribs on its outer wall, and each guide rib is disposed within each annular guide groove.

[0011] Furthermore, the spacing between adjacent guide ribs is 1 / 8 to 1 / 12 of the storage tank circumference.

[0012] Furthermore, each of the aforementioned guide ribs has a guide microgroove on its surface.

[0013] Furthermore, the flow-guiding microgrooves on the surface of each of the flow-guiding ribs are arranged in a continuous wave-like pattern.

[0014] Furthermore, each of the flexible scraping strips is made of fluororubber, with a trapezoidal cross-section, and the scraping surface forms an 80-90° angle with the outer wall of the storage tank.

[0015] Furthermore, the liquid collection box is divided into three-stage filtration chambers, which are sequentially arranged as: a stainless steel filter screen, a microporous membrane, and an activated carbon adsorption layer.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model reduces the escape amount of fluoride-containing wastewater through the dynamic cooperation of the annular guide channel and the sliding guide cover.

[0018] 2. This utility model ensures that wastewater is directed into the collection box by setting up a flow guide channel.

[0019] 3. This utility model avoids damage to the anti-corrosion layer of the tank by setting up flexible scraping strips, and reduces the amount of fluoride volatilization from the tank wall after cleaning. Attached Figure Description

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

[0021] Figure 2 This is an exploded structural diagram of an embodiment of the present utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of an embodiment of the present utility model.

[0023] Explanation of icon numbers

[0024] Storage tank 1; flow guide rib 11; flow guide microchannel 12;

[0025] 2. Fixed base; 21. Annular guide groove; 22. Guide channel; 23. Annular guide cover; 24. Flexible scraper strip;

[0026] Fixed plate 3; Liquid collection port 31;

[0027] Liquid collection box 4; stainless steel filter screen 41; microporous membrane 42; activated carbon adsorption layer 43. Detailed Implementation

[0028] The following will describe the implementation of this utility model in detail with reference to specific embodiments, so that the process of how this utility model uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0029] Example

[0030] like Figures 1 to 3 As shown, a storage and transportation device for fluorinated chemicals includes:

[0031] Storage tank 1;

[0032] Fixed base 2, the storage tank 1 is mounted on fixed base 2, the fixed base 2 is provided with a plurality of annular guide grooves 21, each annular guide groove 21 is provided with a guide channel 22 at the bottom, each annular guide groove 21 is slidably provided with an annular guide cover plate 23, and each guide cover plate 23 is provided with a flexible scraping strip 24 at the top.

[0033] The fixing plate 3 has a fixing seat 2 on it. The fixing plate 3 has a liquid collection port 31 that communicates with each of the flow channels 22. The bottom of the fixing plate 3 has a liquid collection box 4 that communicates with each of the liquid collection ports 31.

[0034] The dynamic cooperation between the annular guide channel 21 and the sliding guide cover 23 reduces the escape of fluoride-containing wastewater; the guide channel 22 ensures that the wastewater is directed into the collection box 4; and the flexible scraper strip 24 prevents damage to the anti-corrosion layer of the tank and reduces the amount of fluoride volatilization from the tank wall after cleaning.

[0035] The inner wall of each of the flow channels 22 is provided with a fluorine-repellent coating; the fluorine-repellent coating reduces the amount of fluoride adhering by more than 90%. Compared with the uncoated structure, the flow channel 22 with the fluorine-repellent coating can still ensure the smooth flow of the flow channel 22 after continuous operation. The fluorine-repellent coating is made of polytetrafluoroethylene (PTFE).

[0036] The storage tank 1 has circumferentially distributed flow guide ribs 11 on its outer wall. Each flow guide rib 11 is located in each of the annular flow guide grooves 21. The distance between adjacent flow guide ribs 11 is 1 / 8 of the circumference of the storage tank 1. The flow guide ribs 1 can form equally divided flow channels, increase the radial flow velocity of the liquid, shorten the liquid residence time on the tank wall, and at the same time, improve the bending stiffness of the storage tank 1.

[0037] Each of the flow-guiding ribs 11 has a flow-guiding microgroove 12 on its surface. The flow-guiding microgroove 12 on the surface of each of the flow-guiding ribs 11 is continuously arranged in a wave shape. The depth of each flow-guiding microgroove 12 is 2mm. The arrangement of the flow-guiding microgroove 12 can generate a capillary effect, so that the rinsing liquid can expand to both sides through the flow-guiding microgroove 12 to form a cleaning liquid film during rinsing, which can increase the cleaning speed and reduce the amount of cleaning agent used.

[0038] Each of the flexible scraping strips 24 is made of fluororubber and has a trapezoidal cross-section. The scraping surface forms an 80° angle with the outer wall of the storage tank 1. The angle design can make the scraping pressure uniform and avoid damage to the coating.

[0039] The liquid collection box 4 is divided into three-stage filtration chambers, which are arranged in sequence as follows: stainless steel filter screen 41, microporous membrane 42 and activated carbon adsorption layer 43. The microporous membrane 42 is made of polytetrafluoroethylene (PTFE) membrane.

[0040] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A storage and delivery device for fluorochemicals, characterized in that, The utility model relates to a storage tank, which comprises: a storage tank; a fixing base, wherein the storage tank is arranged on the fixing base, the fixing base is provided with a plurality of annular flow guide grooves, the bottom of each annular flow guide groove is provided with a flow guide channel, each annular flow guide groove is slidably provided with an annular flow guide cover plate, and the top of each flow guide cover plate is provided with a flexible scraping strip; a fixing plate, wherein the fixing base is arranged on the fixing plate, the fixing plate is provided with a liquid collecting opening in communication with each flow guide channel, and the bottom of the fixing plate is provided with a liquid collecting box in communication with each liquid collecting opening.

2. A fluorine-containing chemical storage and delivery device according to claim 1, characterized by: The inner wall of each flow guide channel is provided with a fluorine-repellent coating.

3. A fluorine-containing chemical storage and delivery device according to claim 1, wherein: The outer wall of the storage tank is circumferentially provided with flow guide ribs, and each flow guide rib is arranged in each annular flow guide groove.

4. A fluorine-containing chemical storage and delivery device according to claim 3, wherein: The distance between adjacent flow guide ribs is 1 / 8-1 / 12 of the circumference of the storage tank.

5. A fluorine-containing chemical storage and delivery device according to claim 3, wherein: The surface of each flow guide rib is provided with a flow guide micro groove.

6. A fluorine-containing chemical storage and delivery device according to claim 5, wherein: The flow guide micro groove on the surface of each flow guide rib is arranged in a wavy shape.

7. The storage and delivery device for fluorochemicals of claim 1 wherein: Each flexible scraping strip is made of fluorine rubber, the cross section of each flexible scraping strip is in a trapezoidal structure, and the scraping surface forms an included angle of 80-90° with the outer wall of the storage tank.

8. The storage and delivery device for fluorochemicals of claim 1, wherein: The inner part of the liquid collecting box is a three-stage filtering chamber, which is sequentially provided with a stainless steel filter screen, a microporous membrane and an activated carbon adsorption layer.

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