Polyurethane prepolymer production device for mine reinforcement

Abstract

The utility model belongs to chemical equipment technical field especially for mining polyurethane reinforcing material prepolymer production device, including jar body, install the feeding mechanism on the upper side wall of jar body, all are embedded with cloth gas box on the upper and lower side wall of jar body, and install the heat exchange mechanism between upper and lower cloth gas box, the upper surface of heat exchange mechanism and the lower surface fixed connection of motor's output shaft, motor fixed mounting is in the upper surface of upper cloth gas box, cloth gas box is linked through temperature regulating mechanism between, the lower surface of jar body is close to left side position and is installed with filter mechanism, filter mechanism is linked through extraction mechanism with feeding mechanism, the upper surface of jar body is installed with controller, the utility model discloses through heat exchange mechanism, filter mechanism and extraction mechanism cooperation, make the prepolymer mixing efficiency higher, can filter the impurity among them, and in the process of stirring, the prepolymer in jar body is comprehensively temperature -controlled, make temperature control more accurate, reduce the viscosity, be applicable to low temperature prepoly process.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to a production device for prepolymer of polyurethane reinforcement material for mining. Background Technology

[0002] Polyurethane reinforcement materials for mining are widely used in underground coal mine engineering. The quality of the preparation of its prepolymer directly affects the final performance of the material. The production of prepolymers mostly adopts traditional reaction kettle equipment.

[0003] Currently, traditional reactor equipment relies on heat exchange mechanisms for mixing, resulting in poor mixing efficiency, low overall efficiency, and difficulty in filtering impurities. Furthermore, the viscosity of the reaction system increases and the mixing becomes uneven at low temperatures, leading to low prepolymerization efficiency and unstable product quality. Heating via water jackets makes it difficult to achieve precise reaction control under low-temperature conditions, easily causing localized overheating or incomplete reactions. Therefore, we propose a prepolymer production device for mining polyurethane reinforcement materials to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a production device for prepolymer of polyurethane reinforcement material for mining, which solves the problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, this utility model specifically adopts the following technical solution: A prepolymer production device for mining polyurethane reinforcement materials includes a tank. Rectangular support legs are mounted at the four corners of the tank's lower surface. A feeding mechanism is installed on the upper side wall of the tank. Gas distribution boxes are embedded in both the upper and lower side walls of the tank, and a heat exchange mechanism is installed between the upper and lower gas distribution boxes. The upper surface of the heat exchange mechanism is fixedly connected to the lower surface of the motor's output shaft. The motor is fixedly mounted on the upper surface of the upper gas distribution box. The gas distribution boxes are connected to each other via a temperature control mechanism installed on the right side of the tank. A filter mechanism is installed on the lower surface of the tank near the left side. The filter mechanism is connected to the feeding mechanism via an extraction mechanism. A controller is installed on the upper surface of the tank.

[0006] Furthermore, the feeding mechanism includes a distribution pipe, a discharge head, a feeding pipe, a first check valve, an electronic flow meter, and a solenoid valve. The distribution pipe is fixedly installed on the upper inner wall of the tank. The lower surface of the distribution pipe is evenly provided with discharge heads along the circumference. The upper surface of the distribution pipe is equipped with feeding pipes near the front and rear positions. The feeding pipe is equipped with a first check valve, an electronic flow meter, and a solenoid valve in sequence from bottom to top.

[0007] Furthermore, the heat exchange mechanism includes heat exchange tubes, mechanical seals, and vents. The heat exchange tubes are installed in the upper and lower side walls of the upper and lower air distribution boxes through the mechanical seals. Vents are provided on the front side wall of the heat exchange tubes inside the air distribution boxes.

[0008] Furthermore, the heat exchange tube has an S-shaped structure.

[0009] Furthermore, the temperature control mechanism includes a conduit, a fan, an electric heating box, a semiconductor refrigeration box, and a temperature controller. The conduit connects the upper and lower gas distribution boxes. The fan, the electric heating box, and the semiconductor refrigeration box are connected in series from bottom to top on the conduit. The temperature controller is embedded in the left side wall of the tank and is connected to the fan, the electric heating box, and the semiconductor refrigeration box.

[0010] Furthermore, the filtration mechanism includes a filter cylinder, a filter screen sleeve, a liquid inlet, and a plug. The filter cylinder is fixedly installed on the lower surface of the tank. A filter screen sleeve is provided inside the filter cylinder. A liquid inlet is provided on the lower side wall of the tank corresponding to the filter screen sleeve. A plug is threaded onto the lower surface of the filter cylinder.

[0011] Furthermore, the extraction mechanism includes a connecting pipe, a delivery pump, a three-way control valve, and a second check valve. The connecting pipe connects the filter cylinder to the fabric distribution pipe, and the delivery pump, the three-way control valve, and the second check valve are installed sequentially from top to bottom on the connecting pipe.

[0012] (III) Beneficial Effects Compared with the prior art, this utility model provides a production device for prepolymer of polyurethane reinforcement material for mining, which has the following beneficial effects: This invention, through the cooperation of a heat exchange mechanism, a filtration mechanism, and an extraction mechanism, achieves higher mixing efficiency of the prepolymer, filters out impurities, and, during the stirring process, utilizes a gas distribution box, a heat exchange mechanism, and a temperature control mechanism to comprehensively regulate the temperature of the prepolymer within the tank, resulting in more precise temperature control, reduced viscosity, and suitability for prepolymerization processes of polyurethane reinforcement materials at low temperatures, thereby improving production quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic cross-sectional view of the tank body of this utility model; Figure 3 This is a cross-sectional view of the heat exchange mechanism of this utility model; Figure 4 This is a cross-sectional view of the filter mechanism of this utility model.

[0014] In the diagram: 1. Tank body; 2. Support leg; 3. Feeding mechanism; 301. Distribution pipe; 302. Discharge head; 303. Feeding pipe; 304. First check valve; 305. Electronic flow meter; 306. Solenoid valve; 4. Air distribution box; 5. Heat exchange mechanism; 501. Heat exchange tube; 502. Mechanical seal; 503. Air vent; 6. Motor; 7. Temperature control mechanism; 701. Conduit; 702. Fan; 703. Electric heating box; 704. Semiconductor refrigeration box; 705. Temperature controller; 8. Filtration mechanism; 801. Filter cylinder; 802. Filter screen; 803. Liquid inlet; 804. Plug; 9. Extraction mechanism; 901. Connecting pipe; 902. Transfer pump; 903. Three-way control valve; 904. Second check valve; 10. Controller. Detailed Implementation

[0015] 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. Example

[0016] like Figures 1-4 As shown, an embodiment of the present invention discloses a production device for prepolymer of polyurethane reinforcing material for mining, comprising a tank 1. Rectangular support legs 2 are installed at the four corners of the lower surface of the tank 1. A feeding mechanism 3 is installed on the upper side wall of the tank 1. Gas distribution boxes 4 are embedded in both the upper and lower side walls of the tank 1, and a heat exchange mechanism 5 is installed between the upper and lower gas distribution boxes 4. The upper surface of the heat exchange mechanism 5 is fixedly connected to the lower surface of the output shaft of a motor 6. The motor 6 is fixedly installed on the upper surface of the upper gas distribution box 4. The gas distribution boxes 4 are connected to each other via a temperature regulating mechanism 7, which is installed on the right side of the tank 1. A filter mechanism 8 is installed on the lower surface of the tank 1 near the left side. The filter mechanism 8 is connected to the feeding mechanism 3 via an extraction mechanism 9. A controller 10 is installed on the upper surface of the tank 1.

[0017] like Figure 2 As shown, in some embodiments, the feeding mechanism 3 includes a distribution pipe 301, a discharge head 302, a feeding pipe 303, a first check valve 304, an electronic flow meter 305, and a solenoid valve 306. The distribution pipe 301 is fixedly installed on the upper inner wall of the tank body 1. The discharge head 302 is evenly arranged circumferentially on the lower surface of the distribution pipe 301. The feeding pipe 303 is installed on the upper surface of the distribution pipe 301 near the front and rear positions. The first check valve 304, the electronic flow meter 305, and the solenoid valve 306 are installed sequentially from bottom to top on the feeding pipe 303.

[0018] In this embodiment, the feeding pipe 303 is connected to the external conveying pipe, so that the polyurethane reinforcing material flows into the distribution pipe 301 through the feeding pipe 303, and then into the tank 1 through the discharge head 302. The flow rate is monitored by the electronic flow meter 305. When the set value is reached, the information is fed back to the controller 10. The controller 10 closes the solenoid valve 306 and the first check valve 304 prevents the material from flowing back.

[0019] like Figure 3 As shown, in some embodiments, the heat exchange mechanism 5 includes a heat exchange tube 501, a mechanical seal 502, and an air hole 503. The heat exchange tube 501 is installed in the upper and lower side walls of the upper and lower air distribution box 4 through the mechanical seal 502. The heat exchange tube 501 is provided with an air hole 503 on the front side wall of the air distribution box 4.

[0020] In this embodiment, the vent 503 allows the gas in the upper and lower gas distribution boxes 4 to flow in the heat exchange tube 501. The heat exchange tube 501 heats or cools the raw material in the tank 1. The mechanical seal 502 improves the sealing effect between the heat exchange tube 501 and the upper and lower gas distribution boxes 4.

[0021] like Figure 3 As shown, in some embodiments, the heat exchange tube 501 has an S-shaped structure.

[0022] In this embodiment, the heat exchange tube 501 can stir the raw materials in the tank 1 and meet the requirements of gas flow.

[0023] like Figure 2 As shown, in some embodiments, the temperature control mechanism 7 includes a conduit 701, a fan 702, an electric heating box 703, a semiconductor cooling box 704, and a temperature controller 705. The conduit 701 connects the upper and lower air distribution boxes 4. The fan 702, the electric heating box 703, and the semiconductor cooling box 704 are connected in series from bottom to top on the conduit 701. The temperature controller 705 is embedded in the left side wall of the tank 1 and is connected to the fan 702, the electric heating box 703, and the semiconductor cooling box 704.

[0024] In this embodiment, the temperature controller 705 detects the temperature of the prepolymer inside the tank 1. When the temperature is lower than the set value, the fan 702 and the electric heating box 703 are turned on, while the semiconductor cooling box 704 is turned off. The fan 702 draws air from the lower gas distribution box 4 through the conduit 701, causing the gas to be drawn into the electric heating box 703 for heating. The heated gas then flows into the upper gas distribution box 4 through the conduit 701. When the temperature is higher than the set value, the fan 702 and the semiconductor cooling box 704 are turned on, while the electric heating box 703 is turned off. The fan 702 draws air from the lower gas distribution box 4 through the conduit 701, causing the gas to be drawn into the semiconductor cooling box 704 for cooling. The cooled gas then flows into the upper gas distribution box 4 through the conduit 701.

[0025] like Figure 4 As shown, in some embodiments, the filtration mechanism 8 includes a filter cylinder 801, a filter screen sleeve 802, a liquid inlet 803, and a plug 804. The filter cylinder 801 is fixedly installed on the lower surface of the tank body 1. The filter screen sleeve 802 is provided inside the filter cylinder 801. The liquid inlet 803 is provided on the lower side wall of the tank body 1 corresponding to the filter screen sleeve 802. The plug 804 is threadedly installed on the lower surface of the filter cylinder 801.

[0026] In this embodiment, the upper and lower sides of the filter screen sleeve 802 are clamped with the lower surface of the tank body 1 and the upper surface of the plug 804. The prepolymer in the tank body 1 flows into the filter screen sleeve 802 through the liquid inlet hole 803. The filter screen sleeve 802 filters impurities in the prepolymer. The plug 804 can be disassembled and installed, making it convenient to clean or replace the filter screen sleeve 802.

[0027] like Figure 2 As shown, in some embodiments, the extraction mechanism 9 includes a connecting pipe 901, a delivery pump 902, a three-way control valve 903, and a second check valve 904. The connecting pipe 901 connects the filter cartridge 801 to the fabric distribution pipe 301. The delivery pump 902, the three-way control valve 903, and the second check valve 904 are installed sequentially from top to bottom on the connecting pipe 901.

[0028] In this embodiment, the delivery pump 902 draws the prepolymer from the filter cartridge 801 into the connecting pipe 901, and then into the distribution pipe 301 through the connecting pipe 901. When discharge is required, the three-way control valve 903 is adjusted so that the delivery pump 902 discharges the prepolymer through the front outlet of the three-way control valve 903 through the connecting pipe 901.

[0029] In use, the delivery pipes of components A and B of the polyurethane reinforcement material are connected to the feeding pipes 303 in the front and rear feeding mechanisms 3, respectively. Components A and B of the polyurethane reinforcement material flow through the feeding pipes 303 into the distribution pipe 301, and then through the discharge head 302 into the tank 1. The flow rate is monitored by the electronic flow meter 305. When the set value is reached, the information is fed back to the controller 10, which closes the solenoid valve 306. After feeding is complete, the output shaft of the motor 6 drives the heat exchange tube 501 in the heat exchange mechanism 5 to rotate, causing the heat exchange tube 501 to stir and mix the contents of the tank 1. During this process, the prepolymer in the tank 1 passes through the inlet hole in the filter mechanism 8. 803 flows into the filter sleeve 802, which filters impurities in the prepolymer. The prepolymer in the filter cylinder 801 is then drawn into the connecting pipe 901 by the pump 902 in the extraction mechanism 9. From there, it is drawn into the distribution pipe 301 and then into the tank 1 through the discharge head 302 at the bottom of the distribution pipe 301, causing the prepolymer to tumble. The temperature controller 705 in the temperature control mechanism 7 monitors the temperature of the prepolymer in the tank 1. When the temperature is lower than the set value, the fan 702 and the heating box 703 are turned on, while the semiconductor cooling box 704 is turned off. The fan 702 draws air from the lower air distribution box 4 through the conduit 701. The gas is drawn into the electric heating box 703 for heating. The heated gas flows into the upper gas distribution box 4 through the conduit 701. The high-temperature gas in the upper gas distribution box 4 flows into the heat exchange tube 501 through the vent 503. The heat exchange tube 501 heats the prepolymer inside the tank 1. The gas after heat exchange flows into the lower gas distribution box 4 and is drawn in by the fan 702, forming a circulating heating. Similarly, when the temperature exceeds the set value, the fan 702 and the semiconductor cooling box 704 are turned on, and the electric heating box 703 is turned off. The fan 702 draws gas from the lower gas distribution box 4 through the conduit 701, drawing the gas into the semiconductor cooling box 704 for cooling. The cooled gas then flows into the upper gas distribution box 4 through the conduit 701. In the gas distribution box 4, the low-temperature gas in the upper gas distribution box 4 flows into the heat exchange tube 501 through the gas hole 503. The heat exchange tube 501 cools the prepolymer in the tank 1. The gas after heat exchange flows into the lower gas distribution box 4 and is drawn by the fan 702 to form a circulating cooling, which avoids local temperature differences in the prepolymer in the tank 1. It can comprehensively regulate the temperature of the prepolymer in the tank 1, making the temperature control more precise, reducing viscosity, and is suitable for the prepolymerization process of polyurethane reinforcement materials at low temperature. It makes the prepolymer mixing efficiency higher, can filter impurities, and improves production quality. When discharge is required, the conveying pump 902 discharges the prepolymer through the front discharge port of the three-way control valve 903 through the connecting pipe 901.

[0030] In summary, this prepolymer production device for mining polyurethane reinforcement materials, through the cooperation of heat exchange mechanism 5, filtration mechanism 8 and extraction mechanism 9, achieves higher mixing efficiency of the prepolymer, can filter impurities, and comprehensively adjusts the temperature of the prepolymer in tank 1 during the stirring process, making the temperature control more precise, reducing viscosity, and suitable for low-temperature prepolymerization processes.

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

Claims

1. A production apparatus for prepolymer of polyurethane reinforcement material for mining, comprising a tank (1), characterized in that: The lower surface of the tank (1) has rectangular support legs (2) installed at the four corners. The upper side wall of the tank (1) is equipped with a feeding mechanism (3). The upper and lower side walls of the tank (1) are both embedded with air distribution boxes (4), and a heat exchange mechanism (5) is installed between the upper and lower air distribution boxes (4). The upper surface of the heat exchange mechanism (5) is fixedly connected to the lower surface of the output shaft of the motor (6). The motor (6) is fixedly installed on the upper surface of the upper air distribution box (4). The air distribution boxes (4) are connected to each other through a temperature adjustment mechanism (7). The temperature adjustment mechanism (7) is installed on the right side of the tank (1). The lower surface of the tank (1) is equipped with a filter mechanism (8) near the left side. The filter mechanism (8) is connected to the feeding mechanism (3) through an extraction mechanism (9). The upper surface of the tank (1) is equipped with a controller (10).

2. The mining polyurethane reinforcement material prepolymer production device according to claim 1, characterized in that: The feeding mechanism (3) includes a distribution pipe (301), a discharge head (302), a feeding pipe (303), a first check valve (304), an electronic flow meter (305), and a solenoid valve (306). The distribution pipe (301) is fixedly installed on the upper inner wall of the tank (1). The lower surface of the distribution pipe (301) is uniformly provided with discharge heads (302) along the circumference. The upper surface of the distribution pipe (301) is provided with feeding pipes (303) near the front and rear positions. The feeding pipe (303) is provided with a first check valve (304), an electronic flow meter (305), and a solenoid valve (306) sequentially installed from bottom to top.

3. The mining polyurethane reinforcement material prepolymer production device according to claim 1, characterized in that: The heat exchange mechanism (5) includes a heat exchange tube (501), a mechanical seal (502), and an air hole (503). The heat exchange tube (501) is installed in the upper and lower side walls of the upper and lower air distribution box (4) through the mechanical seal (502). The heat exchange tube (501) is provided with an air hole (503) on the front side wall of the air distribution box (4).

4. The mining polyurethane reinforcement material prepolymer production device according to claim 3, characterized in that: The heat exchange tube (501) has an S-shaped structure.

5. The mining polyurethane reinforcement material prepolymer production device according to claim 1, characterized in that: The temperature control mechanism (7) includes a conduit (701), a fan (702), an electric heating box (703), a semiconductor refrigeration box (704), and a temperature controller (705). The conduit (701) connects the upper and lower air distribution boxes (4). The fan (702), the electric heating box (703), and the semiconductor refrigeration box (704) are connected in series from bottom to top on the conduit (701). The temperature controller (705) is embedded in the left side wall of the tank (1). The temperature controller (705) is connected to the fan (702), the electric heating box (703), and the semiconductor refrigeration box (704).

6. The mining polyurethane reinforcement material prepolymer production device according to claim 1, characterized in that: The filtration mechanism (8) includes a filter cylinder (801), a filter screen sleeve (802), an inlet hole (803), and a plug (804). The filter cylinder (801) is fixedly installed on the lower surface of the tank (1). The filter screen sleeve (802) is provided inside the filter cylinder (801). The inlet hole (803) is opened on the lower side wall of the tank (1) corresponding to the filter screen sleeve (802). The plug (804) is threadedly installed on the lower surface of the filter cylinder (801).

7. The mining polyurethane reinforcement material prepolymer production device according to claim 1, characterized in that: The extraction mechanism (9) includes a connecting pipe (901), a delivery pump (902), a three-way control valve (903), and a second check valve (904). The connecting pipe (901) connects the filter cartridge (801) to the fabric distribution pipe (301). The delivery pump (902), the three-way control valve (903), and the second check valve (904) are installed sequentially from top to bottom on the connecting pipe (901).

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