Chemical feeding device

Abstract

The utility model relates to the technical field of chemical engineering, and discloses a chemical engineering feeding device which comprises an installation sleeve and a fixing cover, four first communicating pipes are arranged on the outer wall of the installation sleeve at equal intervals, metering valves are arranged on the outer sides of the first communicating pipes, and second communicating pipes are arranged at the input ends of the first communicating pipes. And metering pumps are arranged on the outer sides of the second communicating pipes. According to the liquid chemical raw material feeding device, metering can be conducted twice through the metering pump and the metering valve, liquid chemical raw materials can be fed, the feeding accuracy of the liquid chemical raw materials is improved, meanwhile, feeding of the liquid chemical raw materials is facilitated, the first communicating pipe and the second communicating pipe are arranged, and the conveying pipe of the liquid chemical raw materials is divided into two sections; the installation of the installation sleeve can be affected by a long pipeline, the installation complexity is reduced, meanwhile, the four communicating pipes are arranged, various liquid chemical raw materials can be fed at the same time, and cross contamination of the different liquid chemical raw materials in the feeding process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical industry, in particular to a chemical feeding device. Background Art

[0002] Chemical industry is the abbreviation of chemical process, chemical industry and chemical engineering. Any technology that uses chemical methods to change the composition and structure of substances or synthesize new substances belongs to the field of chemical production, that is, chemical process. The products obtained are called chemicals or chemical products. The chemical industry includes petrochemicals, agricultural chemicals, chemical medicines, polymers, coatings, oils and fats, etc. When producing chemical products, different chemical production raw materials must first be added to the chemical reactor, and then the different chemical raw materials are heated, evaporated, cooled and processed at low and high speeds in the reactor.

[0003] Most of the existing liquid chemical raw materials are fed into the reactor in a quantitative manner by setting up a metering pump. When the metering pump is damaged by a malfunction, the measured liquid chemical raw materials will not be accurate, and multiple different liquid chemical raw materials cannot be fed at the same time. After a liquid chemical raw material is transported through the feed pipeline, it needs to be cleaned before another chemical raw material is transported. If the delivery pipeline is not cleaned properly, cross-contamination of the two different liquid chemical raw materials will occur. It is necessary to design a chemical feeding device to solve the above-mentioned problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a chemical feeding device.

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

[0006] A chemical feeding device comprises a mounting sleeve and a fixed cover, wherein the outer wall of the mounting sleeve is equidistantly provided with four first connecting pipes, the outer sides of the first connecting pipes are provided with metering valves, the input ends of the first connecting pipes are provided with second connecting pipes, the outer sides of the second connecting pipes are provided with metering pumps, the bottom of the outer wall of the fixed cover is provided with an external thread, the upper part of the inner wall of the mounting sleeve is provided with an internal thread, and the fixed cover is threadedly connected to the mounting sleeve via external threads and internal threads;

[0007] Through the above technical scheme, the metering pump and the metering valve can be used to measure twice and feed the liquid chemical raw materials, which increases the accuracy of the feeding of the liquid chemical raw materials and facilitates the feeding of the liquid chemical raw materials. The first connecting pipe and the second connecting pipe are set to divide the conveying pipe of the liquid chemical raw materials into two sections. The longer pipe will affect the installation of the installation sleeve, which not only reduces the complexity of the installation, but also sets four connecting pipes at the same time, which can feed a variety of liquid chemical raw materials at the same time, avoiding cross contamination of different liquid chemical raw materials during the feeding process.

[0008] Furthermore, the input end of the first connecting tube is bent obliquely upward, the output end of the second connecting tube is bent obliquely downward, and the input end of the first connecting tube is tightly engaged with the output end of the second connecting tube;

[0009] Through the above technical solution, by providing a first connecting tube that bends obliquely upward and a second connecting tube that bends obliquely downward, during installation, the second connecting tube that bends obliquely downward is extended into the first connecting tube that bends obliquely upward, which not only facilitates the connection between the first connecting tube and the second connecting tube, but also avoids leakage of liquid raw materials.

[0010] Further, the outer wall of the mounting sleeve is equidistantly provided with a plurality of first mounting holes, each of which is fixedly connected to a first sealing sleeve, and the bottom of the mounting sleeve is equidistantly provided with a plurality of second mounting holes, each of which is fixedly connected to a second sealing sleeve;

[0011] Through the above technical solution, by setting the first mounting hole and the second mounting hole, the first sealing sleeve and the second sealing sleeve are conveniently installed and fixed on the mounting sleeve, and the connection between the first connecting pipe and the mounting sleeve is sealed by the first sealing sleeve and the second sealing sleeve to increase the air tightness.

[0012] Furthermore, a fixing ear is provided at the bottom of the outer wall of the mounting sleeve, and a plurality of threaded mounting holes are equidistantly provided on the fixing ear, and the inner sides of the threaded mounting holes are all threadedly connected with fixing bolts;

[0013] Through the above technical solution, after the installation sleeve is placed on the feeding port of the reactor, the installation sleeve and the reactor can be fixedly connected by providing fixing ears and fixing bolts, thereby increasing the convenience of installation and disassembly of the installation sleeve.

[0014] Furthermore, a positioning ring is fixedly connected to the bottom of the mounting sleeve;

[0015] Through the above technical solution, when the installation sleeve is placed on the reactor, the positioning ring is provided to facilitate the positioning and installation of the installation sleeve and the reactor feeding port, and at the same time, the sealing performance between the installation sleeve and the reactor feeding port can be increased.

[0016] Furthermore, a temperature monitoring meter and an air pressure monitoring meter are respectively arranged on the left and right sides of the middle part of the upper end of the fixed cover, and handles are fixedly connected to the left and right sides of the upper end of the fixed cover;

[0017] Through the above technical solution, the temperature and air pressure of the chemical raw material production after feeding are monitored by the temperature monitoring meter and the air pressure monitoring meter, and the fixed cover is convenient to open by the handle.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, firstly, the installation sleeve is placed at the feeding port of the reactor through the positioning ring arranged at the bottom, and the fixing ear and the reactor are fixedly connected by fixing bolts to fix the installation sleeve at the feeding port of the reactor, and then one end of the second connecting pipe is installed in the chemical raw material holding barrel, and the downward bending end of the second connecting pipe is installed on the inner side of the upward bending end of the first connecting pipe, and then by opening the metering pump, a certain amount of liquid chemical raw material is drawn into the reactor, and the amount of the liquid chemical raw material is metered again by the metering valve. After the metering valve meters a certain amount of liquid chemical raw material, the metering valve is closed, and the liquid chemical raw material can be metered twice and fed, which increases the accuracy of feeding the liquid chemical raw material and facilitates the feeding of the liquid chemical raw material.

[0020] 2. In the utility model, the fixing cover is fixedly connected to the upper part of the installation sleeve through the threaded connection between the external thread and the internal thread. When the solid chemical raw material is fed, the fixing cover is opened and fed into the reactor. At the same time, the fixing ears arranged on the outside of the installation sleeve are fixedly connected to the reactor through the fixing bolts, which is convenient for the installation and disassembly of the installation sleeve. The first connecting pipe and the second connecting pipe are arranged to divide the conveying pipe of the liquid chemical raw material into two sections. The longer pipe will affect the installation of the installation sleeve, which not only reduces the complexity of the installation, but also arranges four connecting pipes at the same time, which can feed a variety of liquid chemical raw materials at the same time, avoiding cross contamination of different liquid chemical raw materials during the feeding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a chemical feeding device proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of the structure decomposition of the installation sleeve and the fixed cover of a chemical feeding device proposed by the utility model;

[0023] Figure 3 This is a schematic diagram of the bottom structure of a mounting sleeve of a chemical feeding device proposed by the utility model;

[0024] Figure 4 This is a schematic structural diagram of a first connecting pipe and a second connecting pipe of a chemical feeding device proposed by the utility model.

[0025] Legend:

[0026] 1. Mounting sleeve; 2. First connecting pipe; 3. Second connecting pipe; 4. Metering valve; 5. Metering pump; 6. Fixing cover; 7. External thread; 8. Internal thread; 9. First mounting hole; 10. Second mounting hole; 11. First sealing sleeve; 12. Second sealing sleeve; 13. Fixing ear; 14. Threaded mounting hole; 15. Positioning ring; 16. Temperature monitoring meter; 17. Air pressure monitoring meter; 18. Handle; 19. Fixing bolt. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-4 , the utility model provides an embodiment: a chemical feeding device, including a mounting sleeve 1 and a fixed cover 6, the outer wall of the mounting sleeve 1 is equidistantly provided with four first connecting pipes 2, the outer sides of the first connecting pipes 2 are provided with metering valves 4, the input ends of the first connecting pipes 2 are provided with second connecting pipes 3, the outer sides of the second connecting pipes 3 are provided with metering pumps 5, the bottom of the outer wall of the fixed cover 6 is provided with external threads 7, the upper part of the inner wall of the mounting sleeve 1 is provided with internal threads 8, the fixed cover 6 is threadedly connected to the mounting sleeve 1 through the external threads 7 and the internal threads 8, the metering pump 5 and the metering valve 4 can be used to measure twice and feed the liquid chemical raw materials, which increases the accuracy of the feeding of the liquid chemical raw materials and facilitates the feeding of the liquid chemical raw materials, the first connecting pipe 2 and the second connecting pipe 3 are provided, the conveying pipe of the liquid chemical raw materials is divided into two sections, the longer pipeline will affect the installation of the mounting sleeve 1, not only reduces the complexity of the installation, but also provides four connecting pipes, which can feed a variety of liquid chemical raw materials at the same time, avoiding cross contamination of different liquid chemical raw materials during the feeding process.

[0029] The input end of the first connecting pipe 2 is bent in an oblique upward direction, and the output end of the second connecting pipe 3 is bent in an oblique downward direction. The input end of the first connecting pipe 2 is tightly engaged with the output end of the second connecting pipe 3. By setting the first connecting pipe 2 bent in an oblique upward direction and the second connecting pipe 3 bent in an oblique downward direction, during installation, the second connecting pipe 3 bent in an oblique downward direction is extended into the first connecting pipe 2 bent in an oblique upward direction, which not only facilitates the connection between the first connecting pipe 2 and the second connecting pipe 3, but also avoids the leakage of liquid raw materials. The outer wall of the mounting sleeve 1 is equidistantly provided with a plurality of first mounting holes 9, and the first mounting holes 9 are fixedly connected with a first sealing sleeve 11. The bottom of the mounting sleeve 1 is equidistantly provided with a plurality of second mounting holes 10, and the second mounting holes 10 are fixedly connected with a second sealing sleeve 12. By setting the first mounting holes 9 and the second mounting holes 10, it is convenient for the first sealing sleeve 11 and the second sealing sleeve 12 to be installed and fixed on the mounting sleeve 1, and the connection between the first connecting pipe 2 and the mounting sleeve 1 is completed by the first sealing sleeve 11 and the second sealing sleeve 12. The installation sleeve 1 is sealed at the bottom of the outer wall to increase air tightness. A fixing ear 13 is provided at the bottom of the outer wall of the installation sleeve 1. A plurality of threaded mounting holes 14 are equidistantly provided on the fixing ear 13. The inner sides of the threaded mounting holes 14 are threadedly connected with fixing bolts 19. After the installation sleeve 1 is placed on the feeding port of the reactor, the fixing ear 13 and the fixing bolt 19 are provided to fix the installation sleeve 1 and the reactor, thereby increasing the convenience of installation and removal of the installation sleeve 1. A positioning ring 15 is fixedly connected to the bottom of the installation sleeve 1. When the installation sleeve 1 is placed When on the reactor, by setting a positioning ring 15, it is convenient to position and install the installation sleeve 1 and the reactor feeding port, and at the same time, it can increase the sealing performance between the installation sleeve 1 and the reactor feeding port. The left and right sides of the middle of the upper end of the fixed cover 6 are respectively provided with a temperature monitoring meter 16 and an air pressure monitoring meter 17. The left and right sides of the upper end of the fixed cover 6 are fixedly connected with handles 18. The temperature and air pressure of the chemical raw material production after feeding are monitored by the temperature monitoring meter 16 and the air pressure monitoring meter 17. The fixed cover 6 is convenient to open by the handle 18.

[0030] Working principle: first, the installation sleeve 1 is placed at the feeding port of the reactor 1 through the positioning ring 15 set at the bottom, and the fixing ear 13 is fixedly connected to the reactor through the fixing bolt 19, so that the installation sleeve 1 is fixed at the feeding port of the reactor, and then one end of the second connecting pipe 3 is installed in the chemical raw material holding barrel, and the downward bending end of the second connecting pipe 3 is installed on the inner side of the upward bending end of the first connecting pipe 2. Secondly, by opening the metering pump 5, a certain amount of liquid chemical raw material is pumped into the reactor, and the amount of liquid chemical raw material is metered again through the metering valve 4. After the metering valve 4 meters a certain amount of liquid chemical raw material, the metering valve 4 is closed. Finally, the fixed cover 6 is fixedly connected to the top of the installation sleeve 1 through the threaded connection between the external thread 7 and the internal thread 8. When the solid chemical raw material is fed, the fixed cover 6 is opened to feed the reactor.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A chemical feeding device, comprising a mounting sleeve (1) and a fixing cover (6), characterized in that: Four first connecting pipes (2) are equidistantly arranged on the outer wall of the installation sleeve (1), a metering valve (4) is arranged on the outer side of each of the first connecting pipes (2), a second connecting pipe (3) is arranged at the input end of the first connecting pipe (2), a metering pump (5) is arranged on the outer side of each of the second connecting pipes (3), an external thread (7) is arranged at the bottom of the outer wall of the fixing cover (6), an internal thread (8) is arranged at the upper part of the inner wall of the installation sleeve (1), and the fixing cover (6) is threadedly connected to the installation sleeve (1) via the external thread (7) and the internal thread (8).

2. A chemical feeding device according to claim 1, characterized in that: The input end of the first connecting tube (2) is bent obliquely upward, and the output end of the second connecting tube (3) is bent obliquely downward. The input end of the first connecting tube (2) and the output end of the second connecting tube (3) are tightly engaged and connected.

3. A chemical feeding device according to claim 1, characterized in that: The outer wall of the mounting sleeve (1) is provided with a plurality of first mounting holes (9) at equal intervals, each of which is fixedly connected to a first sealing sleeve (11), and the bottom of the mounting sleeve (1) is provided with a plurality of second mounting holes (10) at equal intervals, each of which is fixedly connected to a second sealing sleeve (12).

4. A chemical feeding device according to claim 1, characterized in that: The bottom of the outer wall of the mounting sleeve (1) is provided with a fixing ear (13), a plurality of threaded mounting holes (14) are equidistantly arranged on the fixing ear (13), and the inner sides of the threaded mounting holes (14) are all threadedly connected with fixing bolts (19).

5. A chemical feeding device according to claim 1, characterized in that: A positioning ring (15) is fixedly connected to the bottom of the installation sleeve (1).

6. A chemical feeding device according to claim 1, characterized in that: A temperature monitoring gauge (16) and an air pressure monitoring gauge (17) are respectively arranged on the left and right sides of the middle portion of the upper end of the fixed cover (6), and handles (18) are fixedly connected to the left and right sides of the upper end of the fixed cover (6).

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