A raw material conveying device

Abstract

The utility model discloses a raw material conveying device concretely relates to chemical production equipment technical field, including the placement table, the top left side of placement table is provided with solid material conveying mechanism, the top right side of placement table is provided with liquid material conveying mechanism, the rear side fixed mounting of placement table has the extension board, the top of extension board is provided with the weightlessness type feeder, the metering pump, the weightlessness type feeder is located the rear side of solid material conveying mechanism, the metering pump is located the rear side of liquid material conveying mechanism. The raw material conveying device, through set up exhaust mechanism, can effectively collect and discharge solid material tank and liquid material tank in raw material conveying process produced volatile organic steam or corrosive gas and so on harmful gas, and import it into centralized tail gas treatment system to reduce harmful gas leakage risk, improve the working environment, guarantee the health of operating personnel, prevent raw materials from deteriorating due to contact with air at the same time, ensure product quality stability.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, and in particular to a raw material conveying device. Background Technology

[0002] 3,6-Dichloro-4-isopropylpyridazine is an important pesticide and pharmaceutical intermediate. Its production requires various solid or liquid raw materials, such as pyridazinone derivatives, chlorinating agents like phosphorus oxychloride and phosphorus pentachloride, isopropylating agents, and various organic solvents. The stable, continuous, and precise delivery of these raw materials is crucial for ensuring smooth reaction progress and improving product yield and quality. Currently, in small and medium-sized chemical production enterprises, raw material delivery mostly relies on traditional methods. For liquid raw materials, operators typically rely on manual pouring using buckets or simple pumps combined with pipelines for transfer. For solid powder or granular raw materials, manual handling and pouring are often used, or open screw conveyors, belt conveyors, and other similar equipment are employed. The existing technology has the following problems:

[0003] Many raw materials, especially chlorinating agents and organic solvents, are highly corrosive, volatile, and toxic. Existing conveying devices, particularly open conveying equipment for solid raw materials and liquid conveying systems with poorly sealed pipe connections, are highly susceptible to the volatilization and leakage of toxic and harmful vapors. This not only pollutes the working environment and endangers the health of operators but may also deteriorate due to moisture absorption or reaction with impurities in the air, affecting the quality of the final product. When switching between conveying different raw materials or performing batch-to-batch cleaning, existing devices are often complex in structure, difficult to disassemble and clean, and residual raw materials can easily lead to cross-contamination between different batches, which is extremely detrimental to the production of high-purity intermediates. Utility Model Content

[0004] The main purpose of this invention is to provide a raw material conveying device that can effectively solve the problems of harmful gas leakage, difficult cleaning, and easy cross-contamination in existing raw material conveying devices.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A raw material conveying device includes a placement table. A solid material conveying mechanism is disposed on the top left side of the placement table, and a liquid material conveying mechanism is disposed on the top right side of the placement table. An extension plate is fixedly installed on the rear side of the placement table. A loss-in-weight feeder and a metering pump are disposed above the extension plate. The loss-in-weight feeder is located behind the solid material conveying mechanism, and the metering pump is located behind the liquid material conveying mechanism. An exhaust mechanism and a flushing mechanism are disposed above the solid material conveying mechanism and the liquid material conveying mechanism, and a sewage discharge mechanism is disposed at the bottom of the solid material conveying mechanism and the liquid material conveying mechanism. The solid material conveying mechanism includes a solid material tank, and the loss-in-weight feeder includes a feed pipe. One end of the feed pipe is fixedly installed on the top of the solid material tank and penetrates its inner cavity. A feed electric control valve is provided on the outer wall of the feed pipe. A servo motor is fixedly installed at the center of the top of the solid material tank. The output shaft of the servo motor passes through the inner cavity of the solid material tank and is provided with a stirring mechanism. A lifting discharge pipe that penetrates its inner cavity is fixedly connected to the front end of the solid material tank. A servo motor is fixedly installed at the front end of the lifting discharge pipe. The output shaft of the servo motor passes through the inner cavity of the lifting discharge pipe and is fixedly installed with a screw rod. A discharge pipe that penetrates its inner cavity is fixedly connected to the bottom of the lifting discharge pipe on the side away from the solid material tank. An electric control valve is provided on the outer wall of the discharge pipe.

[0007] Preferably, the liquid conveying mechanism includes a liquid tank, a lifting outlet pipe that penetrates the inner cavity of the liquid tank is fixedly connected to the bottom of the front end of the liquid tank, an electrically controlled valve is provided on the front side of the outer wall of the lifting outlet pipe, an inlet pipe is fixedly connected to the rear side of the liquid tank, the inlet pipe is fixedly connected to the output end of the metering pump, and the input end of the metering pump is connected to a liquid raw material supply pipe for providing liquid raw materials.

[0008] Preferably, the top of the loss-in-weight feeder is connected to a solid particle raw material supply pipe for supplying solid particle raw materials.

[0009] Preferably, the stirring mechanism includes a rotating rod, the top of which is fixedly connected to the output shaft of a servo motor. Several L-shaped scrapers are fixedly installed in a circular array on the lowermost outer wall of the rotating rod. The bottom of the horizontal part of the L-shaped scrapers is in contact with the bottom of the inner wall of the solid material tank, and the vertical part of the L-shaped scrapers is in contact with the inner side wall of the solid material tank to prevent solid raw materials from sticking to the wall. Stirring rods are evenly fixedly installed on the side of the vertical part of the several L-shaped scrapers near the rotating rod.

[0010] Preferably, the exhaust mechanism includes an exhaust connecting pipe, the left and right ends of which are respectively connected to the inner cavities of the solid material tank and the liquid material tank for discharging harmful gases. An exhaust pipe is fixedly connected to the outer wall of the exhaust connecting pipe, and the other end of the exhaust pipe is connected to a centralized exhaust gas treatment system.

[0011] Preferably, the rinsing mechanism includes a rinsing connecting pipe, the left and right ends of which respectively penetrate into the inner cavities of the solid material tank and the liquid material tank and are fixedly connected to annular cleaning pipes. Several nozzles are arranged in a circular array at the bottom of each of the two annular cleaning pipes. Two diversion pipes are fixedly connected to the front side of the rinsing connecting pipe. A pipeline rinsing pipe is fixedly connected to the other end of the left diversion pipe. The bottom of the pipeline rinsing pipe extends into the inner cavity of the lifting discharge pipe and is equipped with several nozzles located above the screw rod for rinsing the lifting discharge pipe. The other end of the right diversion pipe extends into the inner cavity of the lifting liquid discharge pipe for rinsing the lifting liquid discharge pipe.

[0012] Preferably, the liquid outlet pipe and the material outlet pipe are inclined toward the inner cavity of the liquid tank and the solid tank, respectively, to facilitate the discharge of wastewater generated during cleaning.

[0013] Preferably, the sewage discharge mechanism includes two sewage discharge bottom pipes, which are respectively fixedly installed at the bottom of the solid material tank and the liquid material tank and pass through their inner cavities. The outer walls of the two sewage discharge bottom pipes are equipped with an electric control valve. The other ends of the two sewage discharge bottom pipes pass through to the bottom of the table and are connected to a centralized sewage discharge pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model provides a raw material conveying device. By setting an exhaust mechanism, it can effectively collect and discharge harmful gases such as volatile organic vapors or corrosive gases generated in solid material tanks and liquid material tanks during the raw material conveying process, and introduce them into a centralized exhaust gas treatment system, thereby significantly reducing the risk of harmful gas leakage, improving the working environment, protecting the health of operators, and preventing raw materials from deteriorating due to contact with air, thus ensuring stable product quality.

[0016] 2. This utility model provides a raw material conveying device. By integrating a rinsing mechanism and a sewage discharge mechanism, it can realize the automated cleaning and sewage discharge of solid material tanks, liquid material tanks and conveying pipelines. The annular cleaning pipe and nozzle are used to thoroughly rinse the inner wall of the tank and the pipeline. Combined with the inclined design of the lifting discharge pipe and the lifting liquid discharge pipe, the sewage is guided to be discharged, effectively removing residual raw materials, avoiding cross-contamination between different batches of materials, improving the cleaning efficiency of the device, and is suitable for the continuous production of high-purity chemical intermediates. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the solid material conveying mechanism of this utility model;

[0019] Figure 3This is a schematic diagram of the liquid conveying mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the stirring mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the exhaust mechanism and flushing mechanism of this utility model;

[0022] Figure 6 This is a schematic diagram of the sewage discharge mechanism of this utility model.

[0023] In the diagram: 1. Placement table; 2. Solid material conveying mechanism; 21. Solid material tank; 22. Servo motor one; 23. Stirring mechanism; 231. Rotating rod; 232. L-shaped scraper; 233. Stirring rod; 24. Lifting discharge pipe; 25. Servo motor two; 26. Screw rod; 27. Discharge pipe; 28. Electrically controlled valve two; 3. Liquid material conveying mechanism; 31. Liquid tank; 32. Lifting liquid discharge pipe; 33. Electrically controlled valve one; 34. Liquid inlet pipe; 4. Extension plate; 5. Loss-in-weight feeder; 51. Feed pipe; 52. Feed electrical control valve; 6. Metering pump; 7. Exhaust mechanism; 71. Exhaust connection pipe; 72. Exhaust pipe; 8. Flushing mechanism; 81. Flushing connection pipe; 82. Annular cleaning pipe; 83. Diverter pipe; 84. Pipeline flushing pipe; 9. Sewage discharge mechanism; 91. Sewage discharge bottom pipe; 92. Electrically controlled valve three. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1 As shown, a raw material conveying device includes a placement table 1. A solid material conveying mechanism 2 is provided on the top left side of the placement table 1, and a liquid material conveying mechanism 3 is provided on the top right side of the placement table 1. An extension plate 4 is fixedly installed on the rear side of the placement table 1. A loss-in-weight feeder 5 and a metering pump 6 are provided above the extension plate 4. The loss-in-weight feeder 5 is located behind the solid material conveying mechanism 2, and the metering pump 6 is located behind the liquid material conveying mechanism 3. An exhaust mechanism 7 and a flushing mechanism 8 are provided above the solid material conveying mechanism 2 and the liquid material conveying mechanism 3. The exhaust mechanism 7 is located in front of the flushing mechanism 8. A sewage discharge mechanism 9 is provided at the bottom of the solid material conveying mechanism 2 and the liquid material conveying mechanism 3.

[0026] The solid material conveying mechanism 2 includes a solid material tank 21, and the loss-in-weight feeder 5 includes a feed pipe 51. One end of the feed pipe 51 is fixedly installed on the top of the solid material tank 21 and passes through its inner cavity. The outer wall of the feed pipe 51 is provided with a feed electric control valve 52. A servo motor 1 22 is fixedly installed at the center of the top of the solid material tank 21. The output shaft of the servo motor 1 22 passes through the inner cavity of the solid material tank 21 and is provided with a stirring mechanism 23. The front end of the solid material tank 21 is fixedly connected to a lifting discharge pipe 24 that passes through its inner cavity. A servo motor 25 is fixedly installed at the front end of the lifting discharge pipe 24. The output shaft of the servo motor 25 passes through the inner cavity of the lifting discharge pipe 24 and is fixedly installed with a screw rod 26. The bottom of the lifting discharge pipe 24, away from the solid material tank 21, is fixedly connected to a discharge pipe 27 that passes through its inner cavity. The outer wall of the discharge pipe 27 is provided with an electric control valve 28.

[0027] like Figure 3 As shown, the liquid conveying mechanism 3 includes a liquid tank 31. A lifting outlet pipe 32 that penetrates the inner cavity of the liquid tank 31 is fixedly connected to the bottom of the front end of the liquid tank 31. An electric control valve 33 is provided on the front side of the outer wall of the lifting outlet pipe 32. An inlet pipe 34 is fixedly connected to the rear side of the liquid tank 31. The inlet pipe 34 is fixedly connected to the output end of the metering pump 6. A liquid raw material supply pipe is connected to the input end of the metering pump 6 for supplying liquid raw materials.

[0028] The top of the loss-in-weight feeder 5 is connected to a solid particle raw material supply pipe for supplying solid particle raw materials.

[0029] like Figure 4 As shown, the stirring mechanism 23 includes a rotating rod 231. The top end of the rotating rod 231 is fixedly connected to the output shaft of the servo motor 22. Several L-shaped scrapers 232 are fixedly installed in a ring array at the bottom of the outer wall of the rotating rod 231. The bottom of the horizontal part of the L-shaped scraper 232 is in contact with the bottom of the inner wall of the solid material tank 21, and the vertical part of the L-shaped scraper 232 is in contact with the inner side wall of the solid material tank 21 to prevent solid raw materials from sticking to the wall. Stirring rods 233 are evenly fixedly installed on the side of the vertical part of the several L-shaped scrapers 232 near the rotating rod 231.

[0030] like Figure 5 As shown, the exhaust mechanism 7 includes an exhaust connection pipe 71, with the left and right ends of the exhaust connection pipe 71 respectively penetrating into the inner cavities of the solid material tank 21 and the liquid material tank 31 for discharging harmful gases. An exhaust pipe 72 is fixedly connected to the outer wall of the exhaust connection pipe 71, and the other end of the exhaust pipe 72 is connected to a centralized exhaust gas treatment system. The exhaust pipe 72 is connected to the centralized exhaust gas treatment system through a flange connection or a quick connector to ensure sealing and easy disassembly.

[0031] The rinsing mechanism 8 includes a rinsing connecting pipe 81. The rear end of the rinsing connecting pipe 81 is connected to a water source or solvent tank and other cleaning fluid supply system. The supply of cleaning fluid is controlled by a pump or valve. The left and right ends of the rinsing connecting pipe 81 pass through the inner cavities of the solid material tank 21 and the liquid material tank 31, respectively, and are fixedly connected to annular cleaning pipes 82. Several nozzles are arranged in annular array at the bottom of the two annular cleaning pipes 82. The front side of the rinsing connecting pipe 81 is fixedly connected to two diversion pipes 83. The other end of the left diversion pipe 83 is fixedly connected to a pipeline rinsing pipe 84. The bottom of the pipeline rinsing pipe 84 passes through the inner cavity of the lifting discharge pipe 24 and is equipped with several nozzles located above the spiral rod 26 for rinsing the lifting discharge pipe 24. The other end of the right diversion pipe 83 passes through the inner cavity of the lifting liquid discharge pipe 32 for rinsing the lifting liquid discharge pipe 32.

[0032] The liquid outlet pipe 32 and the material outlet pipe 24 are inclined toward the inner cavity of the liquid tank 31 and the solid tank 21, respectively, to facilitate the discharge of wastewater generated during cleaning.

[0033] like Figure 6 As shown, the sewage discharge mechanism 9 includes two sewage discharge bottom pipes 91. The two sewage discharge bottom pipes 91 are respectively fixedly installed at the bottom of the solid material tank 21 and the liquid material tank 31 and pass through their inner cavities. The outer walls of the two sewage discharge bottom pipes 91 are equipped with electric control valves 92. The other ends of the two sewage discharge bottom pipes 91 pass through to the bottom of the placement table 1 and are connected to a centralized sewage discharge pipe. The sewage discharge bottom pipes 91 and the centralized sewage discharge pipe are connected by flanges or hoses, and can achieve automatic sewage discharge under the control of the electric control valves 92.

[0034] Feeding solenoid valve 52, solenoid valve one 33, solenoid valve two 28, solenoid valve three 92, servo motor one 22, servo motor two 25 and metering pump 6 are all connected to the PLC control system, and realize the automated operation of raw material conveying, cleaning and sewage discharge through preset programs.

[0035] The working principle of this raw material conveying device will be explained in detail below.

[0036] like Figure 1-6As shown, solid granular raw materials enter through the solid granular raw material supply pipe at the top of the loss-in-weight feeder 5. After the flow rate is controlled by the feed pipe 51 and the feed solenoid valve 52, they enter the solid material tank 21. Servo motor 1 22 starts, driving the rotor 231 of the stirring mechanism 23 to rotate, which drives the L-shaped scraper 232 and the stirring rod 233 to stir and mix the solid raw materials, preventing the raw materials from sticking to the wall. When it is necessary to output solid raw materials, servo motor 25 starts, driving the screw 26 to rotate in the lifting discharge pipe 24, pushing the solid raw materials out from the discharge pipe 27. Solenoid valve 28 controls the discharge amount. Liquid raw materials are drawn in from the liquid raw material supply pipe through the metering pump 6, and enter the liquid material tank 31 through the liquid inlet pipe 34. When it is necessary to output liquid raw materials, solenoid valve 1 33 opens, and the liquid flows out through the lifting discharge pipe 32. The metering pump 6 precisely controls the flow rate. During the raw material conveying process, harmful gases may be generated in the solid material tank 21 and the liquid material tank 31. These gases are collected through the exhaust connection pipe 71 of the exhaust mechanism 7 and discharged to the centralized exhaust gas treatment system through the exhaust pipe 72 to avoid environmental pollution and health hazards. When it is necessary to switch raw materials or perform batch cleaning, the flushing mechanism 8 is activated. The cleaning liquid enters the annular cleaning pipe 82 through the flushing connection pipe 81 and is sprayed out from the nozzle one to clean the inner walls of the solid material tank 21 and the liquid material tank 31. At the same time, the cleaning liquid enters the pipeline flushing pipe 84 and the lifting liquid outlet pipe 32 through the diversion pipe 83 respectively and is sprayed out from the nozzle two to clean the lifting material outlet pipe 24 and the lifting liquid outlet pipe 32. The wastewater generated during cleaning flows into the bottom of the tank through the inclined lifting liquid outlet pipe 32 and lifting material outlet pipe 24, and is discharged to the centralized sewage pipeline through the sewage bottom pipe 91 and the electric control valve three 92 of the sewage discharge mechanism 9. After cleaning or during routine maintenance, the electric control valve three 92 is opened, and the residue or wastewater in the tank is discharged through the sewage bottom pipe 91 to ensure the cleanliness of the device and avoid cross-contamination.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A raw material conveying device, comprising a placement table (1), characterized in that: A solid material conveying mechanism (2) is provided on the top left side of the placement table (1), and a liquid material conveying mechanism (3) is provided on the top right side of the placement table (1). An extension plate (4) is fixedly installed on the rear side of the placement table (1). A loss-in-weight feeder (5) and a metering pump (6) are provided above the extension plate (4). The loss-in-weight feeder (5) is located behind the solid material conveying mechanism (2), and the metering pump (6) is located behind the liquid material conveying mechanism (3). An exhaust mechanism (7) and a flushing mechanism (8) are provided above the solid material conveying mechanism (2) and the liquid material conveying mechanism (3). A sewage discharge mechanism (9) is provided at the bottom of the solid material conveying mechanism (2) and the liquid material conveying mechanism (3). The solid material conveying mechanism (2) includes a solid material tank (21), and the loss-in-weight feeder (5) includes a feed pipe (51). One end of the feed pipe (51) is fixed. A feed pipe (51) is fixedly installed on the top of the solid material tank (21) and penetrates its inner cavity. The outer wall of the feed pipe (51) is provided with a feed electric control valve (52). A servo motor (22) is fixedly installed at the center of the top of the solid material tank (21). The output shaft of the servo motor (22) penetrates into the inner cavity of the solid material tank (21) and is provided with a stirring mechanism (23). The front end of the solid material tank (21) is fixedly connected to a lifting discharge pipe (24) that penetrates its inner cavity. A servo motor (25) is fixedly installed at the front end of the lifting discharge pipe (24). The output shaft of the servo motor (25) penetrates into the inner cavity of the lifting discharge pipe (24) and is fixedly installed with a screw rod (26). The bottom of the lifting discharge pipe (24) away from the solid material tank (21) is fixedly connected to a discharge pipe (27) that penetrates its inner cavity. The outer wall of the discharge pipe (27) is provided with an electric control valve (28).

2. The raw material conveying device according to claim 1, characterized in that: The liquid material conveying mechanism (3) includes a liquid material tank (31). A lifting outlet pipe (32) that penetrates the inner cavity of the liquid material tank (31) is fixedly connected to the bottom of the front end of the liquid material tank (31). An electric control valve (33) is provided on the front side of the outer wall of the lifting outlet pipe (32). An inlet pipe (34) is fixedly connected to the rear side of the liquid material tank (31). The inlet pipe (34) is fixedly connected to the output end of the metering pump (6). The input end of the metering pump (6) is connected to a liquid raw material supply pipe for providing liquid raw materials.

3. The raw material conveying device according to claim 1, characterized in that: The top of the loss-in-weight feeder (5) is connected to a solid particle raw material supply pipe for supplying solid particle raw materials.

4. The raw material conveying device according to claim 1, characterized in that: The stirring mechanism (23) includes a rotating rod (231), the top of which is fixedly connected to the output shaft of a servo motor (22). Several L-shaped scrapers (232) are fixedly installed in a ring array on the bottom of the outer wall of the rotating rod (231). The bottom of the horizontal part of the L-shaped scraper (232) is in contact with the bottom of the inner wall of the solid material tank (21), and the vertical part of the L-shaped scraper (232) is in contact with the inner cavity side wall of the solid material tank (21) to prevent solid raw materials from sticking to the wall. Stirring rods (233) are evenly fixedly installed on the side of the vertical part of the L-shaped scraper (232) near the rotating rod (231).

5. A raw material conveying device according to claim 1, characterized in that: The exhaust mechanism (7) includes an exhaust connection pipe (71), the left and right ends of which are respectively connected to the inner cavities of the solid material tank (21) and the liquid material tank (31) for the purpose of exhausting harmful gases. An exhaust pipe (72) is fixedly connected to the outer wall of the exhaust connection pipe (71), and the other end of the exhaust pipe (72) is connected to a centralized exhaust gas treatment system.

6. The raw material conveying device according to claim 1, characterized in that: The rinsing mechanism (8) includes a rinsing connecting pipe (81). The left and right ends of the rinsing connecting pipe (81) pass through the inner cavities of the solid material tank (21) and the liquid material tank (31) respectively, and are fixedly connected to annular cleaning pipes (82). The bottom of the two annular cleaning pipes (82) is provided with several nozzles in annular array. The front side of the rinsing connecting pipe (81) is fixedly connected to two diversion pipes (83). The other end of the left diversion pipe (83) is fixedly connected to a pipeline rinsing pipe (84). The bottom of the pipeline rinsing pipe (84) passes through the inner cavity of the lifting discharge pipe (24) and is provided with several nozzles located above the screw rod (26) for rinsing the lifting discharge pipe (24). The other end of the right diversion pipe (83) passes through the inner cavity of the lifting liquid discharge pipe (32) for rinsing the lifting liquid discharge pipe (32).

7. A raw material conveying device according to claim 2, characterized in that: The liquid outlet pipe (32) and the material outlet pipe (24) are inclined toward the inner cavity of the liquid tank (31) and the solid tank (21) respectively, so as to facilitate the discharge of sewage generated during cleaning.

8. A raw material conveying device according to claim 1, characterized in that: The sewage discharge mechanism (9) includes two sewage discharge bottom pipes (91). The two sewage discharge bottom pipes (91) are fixedly installed at the bottom of the solid material tank (21) and the liquid material tank (31) respectively and pass through their inner cavities. The outer walls of the two sewage discharge bottom pipes (91) are equipped with an electric control valve (92). The other end of the two sewage discharge bottom pipes (91) passes through to the bottom of the placement table (1) and is connected to a centralized sewage discharge pipe.

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