Coal antifreezing solution preparation raw material feeding device

Abstract

The utility model belongs to coal antifreeze production material loading device field, and disclose a kind of coal antifreeze preparation raw material loading device, to solve the problem of high viscosity when glycerol polyol is loaded, impurity affects equipment and product quality;Including sedimentation bucket, heating component, raw material inlet pipe and quantitative feeding assembly, there is screen board and electronic liquid level meter in sedimentation bucket, heating component contains heating disc, heating component base and heating resistance wire, and quantitative feeding assembly is made of feeding pipeline, liquid suction pipe and diaphragm metering pump;Glycerol polyol enters sedimentation bucket by raw material inlet pipe, and heating component heats raw material to reduce viscosity;Diaphragm metering pump extracts upper clean raw material and conveys to reaction kettle or mixing device;Electronic liquid level meter linkage raw material inlet pipe's electric control gate valve realizes raw material replenishment, sedimentation bucket side cleaning pipeline can periodically clean bottom impurity, the device prolongs pump body life, guarantees product quality, practicality is strong, applicable to coal antifreeze industrial production.

Description

Technical Field

[0001] This utility model relates to the field of feeding devices for coal antifreeze production, specifically a feeding device for raw materials in coal antifreeze preparation. Background Technology

[0002] In the industrial production of coal antifreeze, precise and stable feeding of raw materials is crucial for ensuring product quality and production efficiency. Glycerol polyol, as one of the core raw materials of coal antifreeze, needs to be mixed with other raw materials such as calcium chloride liquid in a specific ratio to ensure that the antifreeze has adequate freezing point reduction performance and corrosion resistance, meeting the antifreeze requirements during low-temperature coal transportation.

[0003] However, glycerol polyols exhibit significant physical defects at room temperature, with their viscosity typically remaining at a high level of 50-500 mPa·s. This characteristic directly impacts the operation of existing feeding devices: most existing devices use conventional pumps to extract glycerol polyols, and the resistance increases significantly when the high-viscosity liquid flows within the pipeline, leading to a substantial increase in pumping pressure. Prolonged operation under high pressure causes the pump load to far exceed design standards, easily leading to motor overload, seal wear, and other malfunctions, significantly shortening the pump's lifespan, and increasing equipment maintenance costs and the risk of production downtime.

[0004] Meanwhile, during the production of glycerol polyols, impurities such as solid catalyst particles are inevitably mixed in. The presence of these solid impurities further exacerbates the problems in the feeding process: on the one hand, impurity particles, after entering the pump body with the liquid, will cause physical wear to the core components such as the rotor and diaphragm inside the pump, accelerating equipment wear and even causing serious malfunctions such as pump jamming; on the other hand, if these impurities are not effectively removed, they will enter the coal antifreeze mixing system along with the glycerol polyols and eventually remain in the finished product. When the antifreeze is sprayed onto the coal or transport car through high-pressure nozzles, impurities easily clog the small orifices of the nozzles, resulting in uneven spraying and requiring frequent shutdowns to clean the nozzles, seriously affecting the product's market competitiveness. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a raw material feeding device for preparing coal antifreeze, thereby solving the problems mentioned in the background art, such as the high viscosity of glycerol polyol and the presence of mixed solid impurities.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a coal antifreeze preparation raw material feeding device, comprising:

[0007] Preferably, a sedimentation tank is used, which is a stainless steel cylindrical tank, and glycerol polyol is temporarily stored inside the sedimentation tank.

[0008] Preferably, the heating component is located below the sedimentation tank;

[0009] Preferably, the raw material inlet pipe has one end connected to the raw material conveying pipe and the other end extending to the bottom of the sedimentation tank.

[0010] Preferably, the quantitative feeding component includes a feeding pipe, a liquid extraction pipe, and a diaphragm metering pump. The diaphragm metering pump is located on one side of the sedimentation tank. One end of the liquid extraction pipe is connected to the input end of the diaphragm metering pump, and the other end of the liquid extraction pipe extends into the sedimentation tank. The feeding pipe is connected to the output end of the diaphragm metering pump.

[0011] Preferably, the sedimentation tank is provided with a lid on top and a horizontal baffle plate is provided inside the sedimentation tank.

[0012] Preferably, the barrier plate has multiple sets of fine mesh holes, and the mesh hole diameter is smaller than the particle size of solid impurities in the glycerol polyol. The raw material inlet pipe passes through the barrier plate from top to bottom, and the inlet of the raw material inlet pipe is located below the barrier plate.

[0013] Preferably, the heating component includes a heating plate, a heating component base, and a heating resistance wire. The heating plate is made of a metal with high thermal conductivity. The heating plate is disposed on the heating component base, and the heating resistance wire is disposed between the heating plate and the heating component base.

[0014] Preferably, a liquid extraction pipe fixing bracket is provided above the baffle plate, the liquid extraction pipe fixing bracket is fixed to the side wall of the sedimentation tank, the liquid extraction pipe is fixed inside the sedimentation tank by the liquid extraction pipe fixing bracket, and the pipe opening of the liquid extraction pipe is located above the baffle plate.

[0015] Preferably, the sedimentation tank is also equipped with an electronic level gauge, the level of which is higher than the level of the suction pipe opening.

[0016] Preferably, the raw material inlet pipe is equipped with an electrically controlled gate valve, and the electrically controlled gate valve is electrically connected to the electronic level gauge.

[0017] Preferably, a cleaning pipe is connected to one side of the sedimentation tank, and a pipe valve is installed on the cleaning pipe. The opening of the cleaning pipe is located below the screen plate.

[0018] Compared with the prior art, this utility model provides a raw material feeding device for coal antifreeze preparation, which has the following beneficial effects:

[0019] This coal-fired antifreeze preparation raw material feeding device is equipped with a sedimentation tank, heating components, raw material inlet pipe, feeding pipe, extraction pipe, diaphragm metering pump, and other structures. It heats the glycerol polyol to reduce its viscosity, and uses the diaphragm metering pump to quantitatively pump the glycerol polyol liquid, thus achieving quantitative feeding of glycerol polyol. The heated glycerol polyol has low viscosity, low extraction resistance, low pressure on the pump body, and long service life. Solid impurities mixed in with the glycerol polyol raw material can be removed through static sedimentation and screen filtration, resulting in good production quality and strong practicality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 4 This is an exploded view of the heating component of this utility model.

[0024] In the diagram: 1. Sedimentation tank; 2. Heating assembly; 3. Raw material inlet pipe; 4. Feeding pipe; 5. Extraction pipe; 6. Diaphragm metering pump; 7. Cover; 8. Mesh screen; 9. Heating plate; 10. Heating assembly base; 11. Heating resistance wire; 12. Extraction pipe fixing bracket; 13. Electronic level gauge; 14. Electrically controlled gate valve; 15. Cleaning pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution:

[0027] A raw material feeding device for preparing coal antifreeze includes:

[0028] Settling tank 1 is a stainless steel cylindrical tank that temporarily stores glycerol polyol. Settling tank 1 serves as a transfer station, allowing the glycerol polyol to remain in the tank, facilitating the sedimentation of solid impurities (a small amount of residual catalyst from production, with a density higher than that of glycerol polyol). This sedimentation places these solid impurities at the bottom, facilitating initial separation.

[0029] Heating component 2 is located below the sedimentation tank 1. Heating component 2 can heat glycerol polyol and reduce its viscosity. The temperature is usually controlled at 40 degrees Celsius. Glycerol polyol has a lower viscosity at 40 degrees Celsius, which facilitates subsequent pumping.

[0030] The raw material inlet pipe 3 is connected at one end to the raw material conveying pipe, and at the other end extends to the bottom of the sedimentation tank 1. The entire device can be set below the horizontal height of the raw material, which can flow downward under the influence of gravity. Alternatively, a pump can be used to provide power to transfer the raw material to the sedimentation tank 1 through the raw material inlet pipe 3.

[0031] The quantitative feeding assembly includes a feeding pipe 4, a liquid extraction pipe 5, and a diaphragm metering pump 6. The diaphragm metering pump 6 is located on one side of the sedimentation tank 1. One end of the liquid extraction pipe 5 is connected to the input end of the diaphragm metering pump 6, and the other end of the liquid extraction pipe 5 extends into the sedimentation tank 1. The feeding pipe 4 is connected to the output end of the diaphragm metering pump 6. This invention is used for quantitative feeding of glycerol polyol. The other end of the feeding pipe 4 is connected to a reaction vessel or mixing device used in the production of coal antifreeze. The specific model of the diaphragm metering pump 6 is not limited; any commonly used by those skilled in the art is applicable. This invention heats the glycerol polyol to a temperature with lower viscosity, making it easier for the diaphragm metering pump 6 to extract it. The diaphragm metering pump 6 achieves quantitative pumping based on the characteristics of diaphragm pumps (each pump extracts the same amount of liquid), allowing a fixed amount of glycerol polyol to be added, which is convenient for the production of coal antifreeze.

[0032] Furthermore, a cover 7 is provided on top of the sedimentation tank 1, and a horizontal baffle plate 8 is provided inside the sedimentation tank 1.

[0033] Furthermore, the baffle plate 8 has multiple sets of fine mesh openings, and the mesh diameter is smaller than the particle size of solid impurities in the glycerol polyol. The raw material inlet pipe 3 passes through the baffle plate 8 from top to bottom, and the opening of the raw material inlet pipe 3 is located below the baffle plate 8. Since the mesh diameter is smaller than the particle size of solid impurities in the glycerol polyol, most solid impurities will be located below the baffle plate 8 (a small portion of finer impurities passing through have almost no impact on the produced coal antifreeze).

[0034] Furthermore, the heating component 2 includes a heating plate 9, a heating component base 10, and a heating resistance wire 11. The heating plate 9 is made of a metal with high thermal conductivity and is mounted on the heating component base 10. The heating resistance wire 11 is positioned between the heating plate 9 and the heating component base 10. Temperature control is achieved by controlling the power of the heating resistance wire 11, which is existing technology. By applying different voltages or currents, the power of the heating resistance wire 11 can be changed to achieve different heating efficiencies. Typically, the controller is provided by the resistance wire supplier, and in actual use, it is not necessary to control it very precisely.

[0035] Furthermore, a suction pipe fixing bracket 12 is provided above the baffle plate 8. The suction pipe fixing bracket 12 is fixed to the side wall of the sedimentation tank 1, and the suction pipe 5 is fixed inside the sedimentation tank 1 through the suction pipe fixing bracket 12, with the pipe opening of the suction pipe 5 located above the baffle plate 8. The location of the suction pipe 5's opening above the baffle plate 8 prevents the extraction of solid impurity particles from the glycerol polyol raw material, thus avoiding damage to the diaphragm metering pump 6 by solid impurities and ensuring product quality.

[0036] Furthermore, an electronic level gauge 13 is also installed inside the sedimentation tank 1, and the level of the electronic level gauge 13 is higher than the level of the inlet of the suction pipe 5. The specific type and model of the electronic level gauge 13 are not limited, and any commonly used by those skilled in the art are applicable.

[0037] Furthermore, an electrically controlled gate valve 14 is installed on the raw material inlet pipe 3, and the electrically controlled gate valve 14 is electrically connected to the electronic level gauge 13. When the liquid level changes (the liquid level drops below the electronic level gauge 13), the electronic level gauge 13 outputs an electrical signal. The electrically controlled gate valve 14 receives the electrical signal output by the electronic level gauge 13 and can open the gate. At this time, the raw material inlet pipe 3 is connected, and new raw material will be added into the sedimentation tank 1. The circuit structure is existing technology and is usually used in conjunction with a relay. It only has three electrical components (electronic level gauge 13, electrically controlled gate valve 14, and relay) and does not involve computing chips or algorithm control.

[0038] Furthermore, a cleaning pipe 15 is connected to one side of the sedimentation tank 1. A pipe valve is installed on the cleaning pipe 15, and the opening of the cleaning pipe 15 is located below the screen plate 8. After prolonged use, some solid impurities will accumulate at the bottom of the sedimentation tank 1. At this time, clean water can be injected into the sedimentation tank 1, and the pipe valve on the cleaning pipe 15 can be opened for cleaning and maintenance. The accumulated solid impurities can be removed by flushing with water.

[0039] Structural Description:

[0040] Sedimentation tank 1: Stainless steel metal cylindrical structure, which is a temporary storage and impurity sedimentation transfer station for glycerol polyols. It is connected to the heating component 2 at the bottom, and is equipped with a baffle plate 8 and an electronic level gauge 13 inside. It is connected to the cleaning pipe 15 on one side.

[0041] Heating component 2: A heating structure located below the sedimentation tank 1, comprising a heating plate 9, a heating component base 10, and a heating resistance wire 11, used to heat the glycerol polyol in the sedimentation tank 1 to reduce its viscosity;

[0042] Raw material inlet pipe 3: tubular structure, one end is connected to the external raw material conveying pipe, and the other end extends from top to bottom through the baffle plate 8 to the bottom of the sedimentation tank 1. An electrically controlled gate valve 14 is provided on the pipe for conveying glycerol polyol raw materials.

[0043] Feeding pipe 4: tubular structure, one end is connected to the output end of diaphragm metering pump 6, and the other end is connected to the reaction vessel or mixing device for coal antifreeze production, used to transport a certain amount of glycerol polyol;

[0044] The extraction tube 5 is a tubular structure. One end is connected to the input end of the diaphragm metering pump 6, and the other end is fixed inside the sedimentation tank 1 by the extraction tube fixing bracket 12 with the tube opening located above the baffle plate 8. It is used to extract the clean glycerol polyol in the upper layer of the sedimentation tank 1.

[0045] Diaphragm metering pump 6: A quantitative conveying device installed on one side of the sedimentation tank 1. The input end is connected to the liquid extraction pipe 5 and the output end is connected to the feeding pipe 4. It realizes quantitative pumping of glycerol polyol by utilizing the characteristic that each pump can pump the same amount of liquid.

[0046] Lid 7: The structure covering the sedimentation tank 1 can reduce heat loss inside the sedimentation tank 1 and prevent external impurities from entering the sedimentation tank 1.

[0047] 8: A plate-shaped structure horizontally set inside the sedimentation tank 1, with multiple sets of mesh holes (the mesh hole diameter is smaller than the particle size of solid impurities in the glycerol polyol). The raw material inlet pipe 3 passes through it to initially intercept solid impurities in the glycerol polyol.

[0048] Heating plate 9: A plate-shaped structure made of metal with high thermal conductivity, set on the heating component base 10, with a heating resistance wire 11 sandwiched between it and the heating component base 10, used to conduct the heat of the heating resistance wire 11 to the sedimentation tank 1;

[0049] Heating component base 10: a support structure used to support the heating plate 9, and cooperates with the heating plate 9 to form a space for placing the heating resistance wire 11, providing a stable installation base for the heating component 2;

[0050] Heating resistance wire 11: A wire-shaped heating element disposed between the heating plate 9 and the heating component base 10. It heats the heating plate 9 by adjusting the power, thereby achieving temperature control of the glycerol polyol in the precipitation tank 1.

[0051] Liquid extraction pipe fixing bracket 12: A bracket structure fixed on the side wall of sedimentation tank 1, used to stably fix the liquid extraction pipe 5 inside sedimentation tank 1, ensuring that the pipe opening of the liquid extraction pipe 5 is kept above the baffle plate 8.

[0052] Electronic level gauge 13: A level monitoring element installed in the sedimentation tank 1, with a horizontal height higher than the opening of the suction pipe 5, and electrically connected to the electrically controlled gate valve 14, used to monitor the level of glycerol polyol and trigger the raw material replenishment signal;

[0053] Electrically controlled gate valve 14: A valve structure installed on the raw material inlet pipe 3, electrically connected to the electronic level gauge 13, receiving signals from the electronic level gauge 13 to control the opening and closing of the raw material inlet pipe 3, thereby realizing the automatic replenishment of glycerol polyol raw materials;

[0054] Cleaning pipe 15: A tubular structure with one end connected to one side of sedimentation tank 1 and the other end equipped with a pipe valve. The pipe opening is located below the baffle plate 8 and is used to inject clean water to flush and discharge the solid impurities accumulated at the bottom of sedimentation tank 1.

[0055] Working principle: Glycerol polyol raw material is transported to sedimentation tank 1 through raw material inlet pipe 3. One end of raw material inlet pipe 3 is connected to an external raw material delivery pipe, and the other end passes through the baffle plate 8 from top to bottom and extends to the bottom of sedimentation tank 1. The raw material enters sedimentation tank 1 under the action of gravity or driven by an external pump. Sedimentation tank 1 is a stainless steel cylindrical tank. The baffle plate 8 inside has multiple sets of fine mesh holes, and the diameter of the mesh holes is smaller than the particle size of solid impurities in glycerol polyol. When the raw material enters sedimentation tank 1, the opening of raw material inlet pipe 3 is located below baffle plate 8, so that most of the solid impurities in the raw material are intercepted below baffle plate 8. Only a small amount of small impurities that have almost no impact on the product can pass through the mesh holes and reach the top of baffle plate 8.

[0056] The heating component 2 includes a heating plate 9, a heating component base 10, and a heating resistance wire 11. The heating plate 9 is made of a metal with high thermal conductivity and is set on the heating component base 10. The heating resistance wire 11 is located between the heating plate 9 and the heating component base 10. By controlling the power of the heating resistance wire 11 (applying different voltages or currents), the glycerol polyol in the precipitation tank 1 is heated. The temperature is usually controlled at 40 degrees Celsius to reduce the viscosity of the glycerol polyol, making it easier to extract later.

[0057] Inside the settling tank 1, the glycerol polyol will have a certain residence time (production mixing time). Utilizing the settling characteristics of solid impurities (a small amount of residual catalyst from production, with a density higher than that of the glycerol polyol), a large amount of impurities will settle to the bottom of the settling tank 1. The cover 7 installed on top of the settling tank 1 can reduce heat loss and facilitate subsequent maintenance.

[0058] During quantitative feeding, the diaphragm metering pump 6 draws glycerol polyol from the sedimentation tank 1 through the extraction pipe 5. One end of the extraction pipe 5 is connected to the input end of the diaphragm metering pump 6, and the other end is fixed inside the sedimentation tank 1 by the extraction pipe fixing bracket 12 (the extraction pipe fixing bracket 12 is fixed to the side wall of the sedimentation tank 1). The opening of the extraction pipe 5 is located above the baffle plate 8, which can avoid drawing solid impurities, prevent impurities from scratching the pump membrane of the diaphragm metering pump 6, and ensure product quality. Taking advantage of its characteristic of drawing the same amount of liquid per pump, the diaphragm metering pump 6 delivers a quantitative amount of glycerol polyol to the reaction vessel or mixing device used for coal antifreeze production through the feeding pipe 4 (connected to the output end of the diaphragm metering pump 6), achieving precise feeding.

[0059] An electronic level gauge 13 (located above the inlet of the suction pipe 5) is installed inside the sedimentation tank 1 to monitor the liquid level. When the liquid level drops below the electronic level gauge 13, the electronic level gauge 13 outputs an electrical signal. Upon receiving the signal, the electrically controlled gate valve 14, which is electrically connected to the gauge, opens the gate to allow new raw materials to be added into the sedimentation tank 1, ensuring continuous feeding. After prolonged use, solid impurities will accumulate at the bottom of the sedimentation tank 1. These impurities can be cleaned through the cleaning pipe 15 connected to one side of the sedimentation tank 1 (the pipe opening is located below the baffle plate 8). By opening the valve on the cleaning pipe 15, clean water can be injected from the top to flush away the accumulated impurities, ensuring the continuous and stable operation of the device.

[0060] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material feeding device for preparing coal antifreeze, characterized in that, include: Sedimentation tank (1) is a stainless steel round tank, and glycerol polyol is temporarily stored inside the sedimentation tank (1). Heating component (2) is located below sedimentation tank (1); Raw material inlet pipe (3), one end of raw material inlet pipe (3) is connected to raw material conveying pipe, and the other end of raw material inlet pipe (3) extends to the bottom of sedimentation tank (1); The quantitative feeding assembly includes a feeding pipe (4), a liquid extraction pipe (5), and a diaphragm metering pump (6). The diaphragm metering pump (6) is located on one side of the sedimentation tank (1). One end of the liquid extraction pipe (5) is connected to the input end of the diaphragm metering pump (6), and the other end of the liquid extraction pipe (5) extends into the sedimentation tank (1). The feeding pipe (4) is connected to the output end of the diaphragm metering pump (6).

2. The coal antifreeze preparation raw material feeding device according to claim 1, characterized in that, The sedimentation tank (1) is provided with a lid (7) on top and a horizontal baffle plate (8) is provided inside the sedimentation tank (1).

3. The coal antifreeze preparation raw material feeding device according to claim 2, characterized in that, The baffle plate (8) has multiple sets of fine mesh holes, and the mesh hole diameter is smaller than the particle size of solid impurities in the glycerol polyol. The raw material inlet pipe (3) passes through the baffle plate (8) from top to bottom, and the inlet of the raw material inlet pipe (3) is located below the baffle plate (8).

4. The coal antifreeze preparation raw material feeding device according to claim 1, characterized in that, The heating component (2) includes a heating plate (9), a heating component base (10), and a heating resistance wire (11). The heating plate (9) is made of a metal material with high thermal conductivity. The heating plate (9) is placed on the heating component base (10), and the heating resistance wire (11) is placed between the heating plate (9) and the heating component base (10).

5. The coal antifreeze preparation raw material feeding device according to claim 3, characterized in that, A suction pipe fixing bracket (12) is provided above the baffle plate (8). The suction pipe fixing bracket (12) is fixed on the side wall of the sedimentation tank (1). The suction pipe (5) is fixed inside the sedimentation tank (1) by the suction pipe fixing bracket (12), and the pipe opening of the suction pipe (5) is located above the baffle plate (8).

6. The coal antifreeze preparation raw material feeding device according to claim 5, characterized in that, An electronic level gauge (13) is also installed inside the sedimentation tank (1), and the level of the electronic level gauge (13) is higher than the level of the inlet of the suction pipe (5).

7. The coal antifreeze preparation raw material feeding device according to claim 6, characterized in that, An electrically controlled gate valve (14) is installed on the raw material inlet pipe (3), and the electrically controlled gate valve (14) is electrically connected to the electronic level gauge (13).

8. The coal antifreeze preparation raw material feeding device according to claim 3, characterized in that, The sedimentation tank (1) is connected to a cleaning pipe (15) on one side. A pipe valve is installed on the cleaning pipe (15), and the opening of the cleaning pipe (15) is located below the screen plate (8).

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