Auxiliary device of flow control instrument for corrosive chemicals

Abstract

The utility model discloses an auxiliary device of a flow control instrument for corrosive chemicals, which comprises a flow meter body, an input end of the flow meter body is connected with an adjusting pipeline, an output end of the flow meter body is connected with a liquid outlet pipe, an outer end of the liquid outlet pipe is connected with an auxiliary pipe, the bottom side of the auxiliary pipe is connected with a sampling return pipe, and the sampling return pipe is connected with a flow control valve. According to the technical scheme, in the conveying process of chemical liquid, matching of flow control and chemical reaction conditions can be guaranteed according to the working condition in a pipeline, the concentration, the temperature and the flow speed are cooperatively adjusted, the situation that metering of the conveyed chemical liquid is lost is avoided, and the conveyed chemical liquid can be discharged and collected; chemical liquid can be sampled and detected in the process of being conveyed on a pipeline, a scraping piece on the outer wall of an L-shaped rotating rod can clean the chemical liquid attached to the inner wall of a pipe body, and under the action of a filter element, sampling liquid discharged by a blow-off pipe can be filtered; the influence of excessive large-particle impurities in the chemical liquid on sampling detection data is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of flow control equipment for chemicals, and more specifically, to an auxiliary device for a flow control instrument for corrosive chemicals. Background Technology

[0002] Chemicals refer to pure substances and mixtures composed of various elements, whether natural or man-made. According to Chemical Abstracts, there are as many as 7 million chemicals in the world, of which more than 100,000 are commercially available, more than 70,000 are frequently used, and more than 1,000 new chemicals appear worldwide every year.

[0003] In existing technologies, corrosive chemical flow meters are flow measurement devices specifically designed for strong acids, strong alkalis, and highly corrosive media. They need to balance corrosion resistance, measurement accuracy, and safety. Flow controllers simply control the flow rate of chemical liquids and cannot control the flow rate in real time based on chemical concentration and temperature. They also cannot monitor the overall operating conditions in the pipeline in real time. The flow control is not well matched with the chemical reaction conditions. Furthermore, during the transportation of chemicals in the pipeline, personnel cannot sample and test the chemicals in the pipeline, which greatly reduces the functionality.

[0004] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes an auxiliary device for a flow control instrument for corrosive chemicals, so as to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] An auxiliary device for a flow control instrument for corrosive chemicals includes a flow meter body, an input end of which is connected to an adjustment pipe, an output end of which is connected to an outlet pipe, an auxiliary pipe connected to the outer end of the outlet pipe, and a sampling return pipe connected to the bottom side of the auxiliary pipe.

[0008] Preferably, the regulating pipe includes an inlet pipe, a connecting pipe, and a first flange. The left end of the inlet pipe is fixedly connected to the connecting pipe, and the left end of the connecting pipe is sleeved and fixed to the first flange.

[0009] Preferably, the connecting pipe is connected and fixed to the input end of the flow meter body through the first flange, a concentration sensor is fixedly installed through the bottom right side of the inlet pipe, and a control box is fixedly connected to the bottom left side of the inlet pipe.

[0010] Preferably, a microcontroller is fixedly connected inside the control box, and a temperature sensor is fixedly connected to the bottom right side of the control box. The temperature sensor, concentration sensor, and flow meter body are electrically connected to the microcontroller via wires.

[0011] Preferably, the sampling reflux pipe includes a first straight pipe, a second straight pipe, and a second flange, wherein the second flange is respectively fitted and fixed to the outer end of the first straight pipe and the outer wall of the second straight pipe.

[0012] Preferably, a threaded pin is threadedly connected between the inner walls of the second flange, a sampling tank is fixedly installed through the middle of the bottom side of the second straight pipe, a return pipe is installed through one side of the bottom of the second straight pipe, a drain pipe is connected to the bottom of the sampling tank through a solenoid valve, an infusion pipe is connected to the front side of the sampling tank through a solenoid valve, and the infusion pipe and the drain pipe are fixedly connected by a pipeline.

[0013] Preferably, the sampling container includes a tube body and an end cap. The end cap is disposed on the bottom side of the tube body. The bottom side of the inner wall of the tube body is provided with a threaded groove. An external threaded tube is fixedly connected to the top of the end cap. The tube body is threadedly connected to the external threaded tube through the threaded groove.

[0014] Preferably, a filter element is fixedly connected between the inner walls of the end caps, the bottom end of the filter element is fixedly connected to the drain pipe, an L-shaped rotating rod is fixedly connected to the right side of the filter element, and a scraper is fixedly connected to the right side of the L-shaped rotating rod, the scraper being movably fitted against the inner wall of the pipe.

[0015] The beneficial effects of this utility model are as follows: it can ensure that the flow control matches the chemical reaction conditions according to the internal working conditions of the pipeline during the transportation of chemical liquids, so that the concentration, temperature and flow rate can be adjusted in a coordinated manner, avoiding the loss of the metered chemical liquid during transportation. It can also discharge and collect the transported chemical liquids, and can sample and test the chemical liquids during the transportation of chemical liquids in the pipeline. The scraper on the outer wall of the L-shaped rotating rod can clean the chemical liquids adhering to the inner wall of the pipe. Under the action of the filter element, the sample liquid discharged from the drain pipe can be filtered to avoid excessive large particulate impurities in the chemical liquids affecting the sampling and testing data. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a schematic diagram of the overall structure of an auxiliary device for a flow control instrument for corrosive chemicals according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the regulating pipe structure of an auxiliary device for a flow control instrument for corrosive chemicals according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the external structure of the auxiliary tube of an auxiliary device for a flow control instrument for corrosive chemicals according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the disassembled structure of the sampling return tube of an auxiliary device for a flow control instrument for corrosive chemicals according to an embodiment of the present invention.

[0021] In the picture:

[0022] 1. Flow meter body; 2. Adjusting pipe; 3. Discharge pipe; 4. Auxiliary pipe; 5. Sampling return pipe; 6. Inlet pipe; 7. Connecting pipe; 8. First flange; 9. Concentration sensor; 10. Control box; 11. Microcontroller; 12. Temperature sensor; 13. First straight pipe; 14. Second straight pipe; 15. Second flange; 16. Threaded pin; 17. Sampling tank; 18. Return pipe; 19. Drain pipe; 20. Infusion pipe; 21. Pipe body; 22. End cap; 23. Externally threaded pipe; 24. Filter element; 25. L-shaped rotating rod; 26. Scraper. Detailed Implementation

[0023] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0024] According to an embodiment of the present invention, an auxiliary device for a flow control instrument for corrosive chemicals is provided.

[0025] Example 1

[0026] like Figure 1-4As shown, an auxiliary device for a flow control instrument for corrosive chemicals according to an embodiment of this utility model includes a flow meter body 1. An regulating pipe 2 is connected to the input end of the flow meter body 1, and an outlet pipe 3 is connected to the output end of the flow meter body 1. An auxiliary pipe 4 is connected to the outer end of the outlet pipe 3, and a sampling return pipe 5 is connected to the bottom side of the auxiliary pipe 4. The regulating pipe 2 includes an inlet pipe 6, a connecting pipe 7, and a first flange 8. The left end of the inlet pipe 6 is fixedly connected to the connecting pipe 7, and the left end of the connecting pipe 7 is fitted and fixed to the first flange 8. The connecting pipe 7 is fixedly connected to the input end of the flow meter body 1 through the first flange 8. A concentration sensor 9 is fixedly connected through the bottom right side of the inlet pipe 6, and a control box 10 is fixedly connected to the bottom left side of the inlet pipe 6. A microcontroller is fixedly connected inside the control box 10. A temperature sensor 12 is fixedly connected to the bottom right side of the control box 10. The temperature sensor 12, concentration sensor 9, and flow meter body 1 are electrically connected to the microcontroller 11 via wires. The chemical liquid enters the flow meter body 1 through the regulating pipe 2. After the flow rate is regulated by the flow meter body 1, it is delivered from the outlet pipe 3 and auxiliary pipe 4. By setting the microcontroller 11, the concentration sensor 9 and temperature sensor 12 detect the temperature and concentration of the input chemical liquid. Based on the detected data, the microcontroller 11 can directly control the flow rate of the flow meter body 1. Thus, during the delivery of the chemical liquid, the flow rate control can be matched with the chemical reaction conditions according to the internal working conditions of the pipeline, so that the concentration, temperature and flow rate can be regulated in a coordinated manner.

[0027] Example 2

[0028] like Figure 1-4As shown, an auxiliary device for a flow control instrument for corrosive chemicals according to an embodiment of the present invention includes a flow meter body 1. An regulating pipe 2 is connected to the input end of the flow meter body 1, and an outlet pipe 3 is connected to the output end of the flow meter body 1. An auxiliary pipe 4 is connected to the outer end of the outlet pipe 3, and a sampling return pipe 5 is connected to the bottom side of the auxiliary pipe 4. The sampling return pipe 5 includes a first straight pipe 13, a second straight pipe 14, and a second flange 15. The second flange 15 is respectively fitted and fixed to the outer end of the first straight pipe 13 and the outer wall of the second straight pipe 14. A threaded pin 16 is threadedly connected between the inner walls of the second flange 15. A sampling container 17 is fixedly connected through the middle of the bottom side of the second straight pipe 14, and a return pipe 18 is provided through one side of the bottom of the second straight pipe 14. The bottom of the sample tank 17 is connected to a drain pipe 19 via a solenoid valve, and the front of the sampling tank 17 is connected to an infusion pipe 20 via a solenoid valve. The infusion pipe 20 and the drain pipe 19 are connected and fixed by a pipe. The output chemical liquid will be transported sequentially from the first straight pipe 13 and the second straight pipe 14. Part of the transported chemical liquid enters the sampling tank 17. Through the solenoid valve on the drain pipe 19, part of the collected chemical liquid can be discharged. By closing the drain pipe 19 and opening the solenoid valve on the infusion pipe 20, the chemical liquid can be transported from the sampling tank 17 to avoid loss of the transported chemical liquid and to discharge and collect the transported chemical liquid. The chemical liquid can be sampled and tested during the pipeline transportation process.

[0029] Example 3

[0030] like Figure 1-4As shown, an auxiliary device for a flow control instrument for corrosive chemicals according to an embodiment of the present invention includes a flow meter body 1. An regulating pipe 2 is connected to the input end of the flow meter body 1, and an outlet pipe 3 is connected to the output end of the flow meter body 1. An auxiliary pipe 4 is connected to the outer end of the outlet pipe 3, and a sampling return pipe 5 is connected to the bottom side of the auxiliary pipe 4. A sampling tank 17 includes a pipe body 21 and an end cap 22. The end cap 22 is disposed on the bottom side of the pipe body 21. A threaded groove is provided on the bottom side of the inner wall of the pipe body 21. An external threaded pipe 23 is fixedly connected to the top of the end cap 22. The pipe body 21 is threadedly connected to the external threaded pipe 23 through the threaded groove. A filter element 24 is fixedly connected between the inner walls of the end cap 22. The bottom end of the filter element is fixedly connected to a drain pipe 19. The right side of the filter element 24 is fixedly connected to... An L-shaped rotating rod 25 is connected to the tube 21, and a scraper 26 is fixedly connected to the right side of the L-shaped rotating rod 25. The scraper 26 is in contact with the inner wall of the tube 21. The tube 21 is connected and fixed to the external threaded tube 23 on the end cap 22 through a threaded groove, which facilitates the disassembly of the sampling tank 17. During the disassembly of the sampling tank 17, the end cap 22 rotates, which allows the internal filter element 24 and the L-shaped rotating rod 25 to rotate. While the L-shaped rotating rod 25 is being rotated and removed, the scraper 26 on the outer wall of the L-shaped rotating rod 25 can clean the chemical liquid adhering to the inner wall of the tube 21. Under the action of the filter element 24, the sampling liquid discharged from the drain pipe 19 can be filtered to avoid excessive large particulate impurities in the chemical liquid affecting the sampling and testing data.

[0031] In summary, with the help of the above-mentioned technical solution of this utility model, when this device is in use, the chemical liquid enters the flow meter body 1 through the regulating pipe 2, and after the flow rate is regulated by the flow meter body 1, it is transported from the outlet pipe 3 and the auxiliary pipe 4. By setting up a single-chip microcomputer controller 11, the temperature and concentration of the input chemical liquid are detected by the concentration sensor 9 and the temperature sensor 12. Based on the detected data values, the flow rate of the flow meter body 1 can be directly controlled by the single-chip microcomputer controller 11. The output chemical liquid will be transported sequentially from the first straight pipe 13 and the second straight pipe 14, and part of the transported chemical liquid will enter the sampling tank 17. The collected chemical liquid can be discharged through the solenoid valve on the drain pipe 19. When the drain pipe 19 is closed and the solenoid valve on the infusion pipe 20 is opened, the chemical liquid can be transported from the sampling tank 17. The pipe body 21 is connected and fixed to the external threaded pipe 23 on the end cap 22 through the threaded groove, which facilitates the disassembly of the sampling tank 17. During the disassembly of the sampling tank 17, the end cap 22 rotates, which allows the internal filter element 24 and the L-shaped rotating rod 25 to rotate. While the L-shaped rotating rod 25 is being rotated and removed, the scraper 26 on the outer wall of the L-shaped rotating rod 25 can clean the chemical liquid adhering to the inner wall of the pipe body 21.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An auxiliary device for a flow control instrument for corrosive chemicals, comprising a flow meter body (1), characterized in that, The input end of the flow meter body (1) is connected to an adjusting pipe (2), the output end of the flow meter body (1) is connected to an outlet pipe (3), the outer end of the outlet pipe (3) is connected to an auxiliary pipe (4), and the bottom side of the auxiliary pipe (4) is connected to a sampling return pipe (5).

2. The auxiliary device for a flow control instrument for corrosive chemicals according to claim 1, characterized in that, The regulating pipe (2) includes an inlet pipe (6), a connecting pipe (7), and a first flange (8). The left end of the inlet pipe (6) is fixedly connected to the connecting pipe (7), and the left end of the connecting pipe (7) is fixedly fitted to the first flange (8).

3. The auxiliary device for a flow control instrument for corrosive chemicals according to claim 2, characterized in that, The connecting pipe (7) is connected and fixed to the input end of the flow meter body (1) through the first flange (8). A concentration sensor (9) is fixed through the bottom right side of the inlet pipe (6), and a control box (10) is fixedly connected to the bottom left side of the inlet pipe (6).

4. The auxiliary device for a flow control instrument for corrosive chemicals according to claim 3, characterized in that, The control box (10) is fixedly connected to a single-chip microcomputer controller (11), and a temperature sensor (12) is fixedly connected to the bottom right side of the control box (10). The temperature sensor (12), the concentration sensor (9), and the flow meter body (1) are electrically connected to the single-chip microcomputer controller (11) through wires.

5. The auxiliary device for a flow control instrument for corrosive chemicals according to claim 4, characterized in that, The sampling return pipe (5) includes a first straight pipe (13), a second straight pipe (14), and a second flange (15). The second flange (15) is respectively fitted and fixed to the outer end of the first straight pipe (13) and the outer wall of the second straight pipe (14).

6. The auxiliary device for a flow control instrument for corrosive chemicals according to claim 5, characterized in that, A threaded pin (16) is threadedly connected to the inner wall of the second flange (15). A sampling tank (17) is fixedly connected through the middle of the bottom side of the second straight pipe (14). A return pipe (18) is provided through one side of the bottom of the second straight pipe (14). A drain pipe (19) is connected to the bottom of the sampling tank (17) through a solenoid valve. An infusion pipe (20) is connected to the front side of the sampling tank (17) through a solenoid valve. The infusion pipe (20) and the drain pipe (19) are fixedly connected by a pipe.

7. The auxiliary device for a flow control instrument for corrosive chemicals according to claim 6, characterized in that, The sampling container (17) includes a tube body (21) and an end cap (22). The end cap (22) is located on the bottom side of the tube body (21). The bottom side of the inner wall of the tube body (21) is provided with a threaded groove. An external threaded tube (23) is fixedly connected to the top of the end cap (22). The tube body (21) is threadedly connected to the external threaded tube (23) through the threaded groove.

8. The auxiliary device for a flow control instrument for corrosive chemicals according to claim 7, characterized in that, A filter element (24) is fixedly connected to the inner wall of the end cap (22). The bottom end of the filter element is fixedly connected to the drain pipe (19). An L-shaped rotating rod (25) is fixedly connected to the right side of the filter element (24). A scraper (26) is fixedly connected to the right side of the L-shaped rotating rod (25). The scraper (26) is movably attached to the inner wall of the pipe body (21).

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