Mining polyurethane reinforcing material prepolymer production device and production method thereof

Abstract

The invention discloses a mining polyurethane reinforcing material prepolymer production device and a production method thereof, and the mining polyurethane reinforcing material prepolymer production device comprises a white material feeding system, a black material feeding system, a reaction kettle main body, and a heating device, a cooling device, a stirring device and a nitrogen pipeline device which are arranged on the reaction kettle main body, the white material feeding system and the black material feeding system are fixed to the two sides of the upper portion of the reaction kettle body respectively, the feeding amount of black materials and the feeding amount of white materials are controlled through a mass flow meter, a jacket layer used for heating is installed on the outer layer of the reaction kettle body, an annular cooling coil is arranged in the reaction kettle body, and an anchor frame type stirring paddle is installed below a stirring shaft. A temperature measuring device is further mounted in the reaction kettle main body, the nitrogen pipeline device comprises a straight pipe and an annular pipe, and the annular pipe is arranged in the reaction kettle main body and close to the bottom. The device is simple to use, convenient to operate and more uniform in material mixing, synthesis of a mine polyurethane black material prepolymer and a mine polyurethane white material prepolymer can be realized respectively, the utilization of the device is optimized, and the production cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of chemical equipment, and in particular to a production device and a production method of a prepolymer of a polyurethane reinforcement material for mining. Background Art

[0002] Mining polyurethane prepolymers are generally reactive semi-finished products formed by the addition reaction of polyisocyanates and polyester or polyether polyols. By controlling the ratio of polyisocyanates to hydroxyl-containing raw materials, prepolymers with terminal -NCO groups or terminal -OH groups can be prepared. The reaction needs to be carried out in a special reactor.

[0003] For example, Chinese utility model patent CN 204973876 U discloses a polyurethane elastomer prepolymer synthesis device, in which a jacket layer for heating and cooling is provided outside the reactor, and steam can be introduced into the jacket layer for heating, and cooling water can be introduced into the jacket layer for cooling, but the heating and cooling processes cannot be achieved at the same time, which easily leads to inaccurate temperature control and large temperature control errors. In addition, due to the high viscosity of the raw materials for producing prepolymers and uneven mixing of the raw materials, the reaction will be incomplete and the prepolymer pre-designed indicators will not be met. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the temperature control is difficult during the reaction of the prepolymer of the polyurethane reinforcement material and the raw materials are mixed unevenly.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is to provide a mining polyurethane reinforcement material prepolymer production device, including a white material feeding system, a black material feeding system, a reactor body (1), and a heating device, a cooling device, a stirring device and a nitrogen pipeline device arranged on the reactor body (1).

[0006] In the above scheme, the white material feeding system comprises a white material stirring kettle (12), and a white material stirring motor (14) arranged in the middle of the top of the stirring kettle (12); a white material stirring shaft (15) is connected below the white material stirring motor (14); a wall scraper (16) is provided at the upper end of the white material stirring shaft (15), and a stirring blade (17) is provided at the lower end; a catalyst and other raw material feed port (13) is provided on one side of the top of the white material stirring kettle (12); a white material discharge port (18) is provided at the bottom of the white material stirring kettle (12); a white material connecting pipe (19) is connected to the lower end of the white material connecting pipe (19); and a white material mass flow meter (20) is connected to the right side of the white material connecting pipe (19).

[0007] In the above scheme, the black material feeding system includes an isocyanate raw material tank (23), and an isocyanate raw material feeding port (24) opened at the top of the isocyanate raw material tank (23), a black material discharge port (25) is opened at the bottom of the isocyanate raw material tank (23), the lower section of the black material discharge port (25) is connected to a black material connecting pipe (26), and the left side of the black material connecting pipe (26) is connected to a black material mass flow meter (27).

[0008] In the above scheme, the reactor body (1) is connected to the white material feeding system and the black material feeding system respectively through two Y-shaped connecting pipes, the two branch pipes of the Y-shaped connecting pipe connected to the white material feeding system are respectively connected to a first valve (21) and a second valve (22), and the two branch pipes of the Y-shaped connecting pipe connected to the black material feeding system are respectively connected to a third valve (28) and a fourth valve (29), a main stirring motor (4) is passed through the middle of the top of the reactor body (1), a white material feeding port (3) and a black material feeding port (5) are symmetrically provided on the left and right sides of the top of the reactor body (1), and a white material spray feeding port (2) and a black material spray feeding port (5) are symmetrically provided on the left and right sides of the top of the reactor body (1). The white material spray feed port (2) is arranged on one side of the white material feed port (5), and the black material spray feed port (6) is arranged on one side of the black material feed port (5). The first valve (21), the second valve (22), the third valve (28) and the fourth valve (29) are respectively connected to the white material feed port (3), the white material spray feed port (2), the black material feed port (5) and the black material spray feed port (6). The top of the reactor body (1) is symmetrically provided with a cooling water inlet (71) and a cooling water outlet (72). The top of the reactor body (1) is respectively provided with a nitrogen pipeline (8) and a temperature measuring device (10). The bottom of the reactor body (1) is provided with a main body discharge port (11).

[0009] In the above scheme, the heating device includes a jacket layer (9) arranged on the outer layer of the reactor body (1), a heat transfer oil inlet (91) is provided at the bottom of the jacket layer (9), and a heat transfer oil circulation outlet (92) is provided at the upper left part of the jacket layer (9).

[0010] In the above scheme, the cooling device includes an annular cooling coil (7) installed inside the reactor body (1), and the annular cooling coil (7) is connected to the cooling water inlet (71) and the cooling water outlet (72) respectively, the cooling water inlet (71) is externally connected to a water inlet pipe, and the cooling water outlet (72) is externally connected to a drain pipe.

[0011] In the above scheme, the stirring device is the main stirring motor (4), and a main stirring shaft (41) is connected to the bottom of the main stirring motor (4). The main stirring shaft (41) is vertically penetrated through the center of the annular cooling coil (7), and an anchor frame stirring paddle (42) is installed below the main stirring shaft (41).

[0012] In the above scheme, the nitrogen pipeline device is the nitrogen pipeline (8), and the nitrogen pipeline (8) comprises a straight pipe (81) and an annular pipe (82), the straight pipe (81) is integrally connected to the annular pipe (82), the nitrogen pipeline (8) is passed through the straight pipe (81) and is arranged in the reactor body (1), and the annular pipe (82) is arranged in the reactor body (1) near the bottom.

[0013] In the above solution, eighteen nozzles (83) are evenly distributed on the annular tube (82), and the nozzles (83) open vertically downward.

[0014] In the above solution, manholes are provided on both the white material discharge port (3) and the black material discharge port (5).

[0015] The present invention also provides a production method of a mining polyurethane reinforcement material prepolymer production device, comprising the following steps:

[0016] When synthesizing white prepolymer, white material, catalyst, etc. for synthesizing prepolymer are sequentially added into the white material stirring kettle through the white material stirring kettle feed port, the white material stirring motor is turned on, after the materials are stirred evenly, the white material discharge port is opened, the first valve is opened through the white material mass flow meter, and the materials are added into the reactor body through the white material feed port; the main stirring motor is turned on, the black material discharge port is opened, the isocyanate raw material passes through the black material mass flow meter, the fourth valve is opened, and the materials are sprayed evenly into the reactor body through the black material spray feed port. After the addition is completed, the nitrogen pipeline is opened to purge the air in the reactor body, and then the heating device on the reactor body is turned on to react at a certain temperature, and the reaction situation in the reactor is detected through the temperature measuring device. When the temperature is too high, the cooling device is turned on to cool down. During the reaction, the reaction situation in the reactor can be observed through the manhole. After the reaction is completed, the reaction product, the white prepolymer, is taken out through the main body discharge port;

[0017] When synthesizing the black material prepolymer, the isocyanate raw material is sequentially added into the isocyanate raw material tank through the isocyanate raw material feed port, the black material discharge port is opened, the black material mass flow meter is passed through, the third valve is opened, and the black material is added into the reactor body through the black material feed port; the main stirring motor is turned on, the white material discharge port is opened, the evenly mixed white material passes through the white material mass flow meter, the second valve is opened, and the white material is evenly sprayed into the reactor body through the white material spray feed port. After the addition is completed, the nitrogen pipeline is opened to purge the air in the reactor body, and then the heating device on the reactor body is turned on to react at a certain temperature. The reaction situation in the reactor is detected through the temperature measuring device. When the temperature is too high, the cooling device is turned on to cool down. During the reaction, the reaction situation in the reactor can be observed through the manhole. After the reaction is completed, the reaction product, the black material prepolymer, is taken out through the main body discharge port.

[0018] The beneficial effects of the present invention are:

[0019] 1. The main structure of the reactor adopts a sleeve jacket and an external heating system. The inner wall of the reactor is equipped with a cooling coil, which can not only heat well, but also has a very efficient cooling system to achieve precise adjustment of the reaction temperature.

[0020] 2. During the prepolymer synthesis process, a portion of the material is sprayed through a spray device and then mixed and stirred, so that the material mixing is more thorough and the reaction is more complete, the stirring time is reduced, the mixing uniformity of the raw materials is improved, and the synthesis quality and rate of the prepolymer are increased.

[0021] 3. The nitrogen pipeline is set near the bottom of the reactor body. When the nitrogen is sprayed downward, the nitrogen is first filled from the bottom to the top to prevent the nitrogen from being enriched in the upper part, so that the air in the reactor can be completely exhausted and the occurrence of side reactions can be reduced.

[0022] 4. Both black prepolymer and white prepolymer can be produced in the device respectively, optimizing the utilization of the device and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the front internal structure of the present invention;

[0024] Figure 2 It is a top view of the reactor body of the present invention;

[0025] Figure 3 is a cross-sectional view of the reactor body of the present invention;

[0026] Figure 4 It is a top view of the nitrogen pipeline inside the reactor body of the present invention. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with the accompanying drawings.

[0028] The present invention discloses a production device and a production method of a prepolymer of a polyurethane reinforcement material for mining. Those skilled in the art can refer to the content of this article and appropriately improve the process parameters to achieve the same. It should be particularly pointed out that all similar substitutions and modifications are obvious to those skilled in the art, and they are all deemed to be included in the present invention, and relevant personnel can obviously modify or appropriately change and combine the contents described herein without departing from the content, spirit and scope of the present invention to implement and apply the technology of the present invention.

[0029] In the present invention, unless otherwise specified, scientific and technical terms used herein have the meanings commonly understood by those skilled in the art.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] It should be noted that in the description of the present invention, the terms "first" and "second" are only used to facilitate the description of different components, and cannot be understood as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0033] like Figures 1 to 4 As shown, the present invention provides a mining polyurethane reinforcement material prepolymer production device, which includes a white material feeding system, a black material feeding system, a reactor body (1), and a heating device, a cooling device, a stirring device and a nitrogen pipeline device arranged on the reactor body (1).

[0034] The white material feeding system comprises a white material stirring kettle (12) and a white material stirring motor (14) arranged in the middle of the top of the stirring kettle (12); a white material stirring shaft (15) is connected to the bottom of the white material stirring motor (14); a wall scraper (16) is arranged at the upper end of the white material stirring shaft (15); the wall scraper (16) is arranged close to the white material stirring kettle (12); a stirring blade (17) is arranged at the lower end of the white material stirring shaft (15); a raw material feeding port (13) such as a catalyst is provided on one side of the top of the white material stirring kettle (12); a white material discharge port (18) is provided at the bottom of the white material stirring kettle (12); a white material connecting pipe (19) is connected to the lower end of the white material connecting pipe (19); and a white material mass flowmeter (20) is connected to the right side of the white material connecting pipe (19).

[0035] Furthermore, the black material feeding system includes an isocyanate raw material tank (23), and an isocyanate raw material feeding port (24) opened at the top of the isocyanate raw material tank (23); a black material discharge port (25) is opened at the bottom of the isocyanate raw material tank (23); the lower section of the black material discharge port (25) is connected to a black material connecting pipe (26); and the left side of the black material connecting pipe (26) is connected to a black material mass flow meter (27).

[0036] Secondly, the reactor body (1) is connected to the white material feeding system and the black material feeding system respectively through two Y-shaped connecting pipes, and the two branch pipes of the Y-shaped connecting pipe connected to the white material feeding system are respectively connected to the first valve (21) and the second valve (22), and the two branch pipes of the Y-shaped connecting pipe connected to the black material feeding system are respectively connected to the third valve (28) and the fourth valve (29).

[0037] A main stirring motor (4) is provided in the middle of the top of the reactor body (1); a white material feed port (3) and a black material feed port (5) are symmetrically provided on the left and right sides of the top of the reactor body (1); a manhole is provided on the white material discharge port (3) and the black material discharge port (5); and a white material spray feed port (2) and a black material spray feed port (6) are symmetrically provided on the left and right sides of the top of the reactor body (1); the white material spray feed port (2) is provided on one side of the white material feed port (5); and the black material spray feed port (6) is provided on one side of the black material feed port (5); and a first valve (21), a second valve (22), a third valve (28) and a fourth valve (29) are respectively connected to the white material feed port (3), the white material spray feed port (2), the black material feed port (5) and the black material spray feed port (6).

[0038] Furthermore, a cooling water inlet (71) and a cooling water outlet (72) are symmetrically provided at the top of the reactor body (1), a nitrogen pipeline (8) and a temperature measuring device (10) are respectively penetrated at the top of the reactor body (1), and a main body discharge port (11) is provided at the bottom of the reactor body (1).

[0039] The heating device comprises a jacket layer (9) arranged on the outer layer of the reactor body (1), a heat transfer oil inlet (91) is arranged at the bottom of the jacket layer (9), and a heat transfer oil circulation outlet (92) is arranged at the upper left part of the jacket layer (9).

[0040] The cooling device comprises an annular cooling coil (7) installed inside the reactor body (1); the annular cooling coil (7) is connected to a cooling water inlet (71) and a cooling water outlet (72) respectively; the cooling water inlet (71) is externally connected to a water inlet pipe; and the cooling water outlet (72) is externally connected to a drainage pipe.

[0041] The stirring device is a main stirring motor (4), a stirring shaft (41) is connected below the main stirring motor (4), the main stirring shaft (41) is vertically penetrated through the center of the annular cooling coil (7), and an anchor frame type stirring paddle (42) is installed below the main stirring shaft (41).

[0042] The nitrogen pipeline device is a nitrogen pipeline (8), the nitrogen pipeline (8) comprises a straight pipe (81) and an annular pipe (82), the straight pipe (81) is integrally connected to the annular pipe (82), the nitrogen pipeline (8) is passed through the straight pipe (81) and is arranged in the reactor body (1), the annular pipe (82) is arranged near the bottom of the reactor body (1), and eighteen nozzles (83) are evenly distributed on the annular pipe (82), and the nozzles (83) open vertically downward.

[0043] The workflow of the production method of the device of the present invention is as follows:

[0044] When synthesizing the white material prepolymer, the white material, catalyst, etc. for synthesizing the prepolymer are sequentially added into the white material stirring kettle through the white material stirring kettle feed port, the white material stirring motor is turned on, after the materials are stirred evenly, the white material discharge port is opened, the first valve is opened through the white material mass flow meter, and the materials are added into the reactor body through the white material feed port; the main stirring motor is turned on, the black material discharge port is opened, the isocyanate raw material passes through the black material mass flow meter, the fourth valve is opened, and the materials are sprayed evenly into the reactor body through the black material spray feed port. After the addition is completed, the nitrogen pipeline is opened to purge the air in the reactor body to keep the reactor in a nitrogen protection environment, and then the heating device on the reactor body is turned on to react at a certain temperature, and the reaction situation in the reactor is detected through the temperature measuring device. When the temperature is too high, the cooling device is turned on to cool down the reaction temperature to a suitable temperature. During the reaction, the reaction situation in the reactor can be observed through the manhole. After the reaction is completed, the reaction product, the white material prepolymer, is taken out through the main body discharge port.

[0045] When synthesizing the black material prepolymer, the isocyanate raw material is sequentially added into the isocyanate raw material tank through the isocyanate raw material feed port, the black material discharge port is opened, the black material mass flow meter is passed through, the third valve is opened, and the black material is added into the reactor body through the black material feed port; the main stirring motor is turned on, the white material discharge port is opened, the evenly mixed white material passes through the white material mass flow meter, the second valve is opened, and the white material is sprayed evenly into the reactor body through the white material spray feed port. After the addition is completed, the nitrogen pipeline is opened to purge the air in the reactor body to keep the reactor in a nitrogen protection environment, and then the heating device on the reactor body is turned on to react at a certain temperature, and the reaction situation in the reactor is detected by the temperature measuring device. When the temperature is too high, the cooling device is turned on to cool down and reduce the reaction temperature to a suitable temperature. During the reaction, the reaction situation in the reactor can be observed through the manhole. After the reaction is completed, the reaction product, the black material prepolymer, is taken out through the main body discharge port.

[0046] Example:

[0047] Example 1-3 synthesizes a white material prepolymer, and the white material, catalyst, etc. for synthesizing the prepolymer are sequentially added into the white material stirring kettle through the white material stirring kettle feed port, the white material stirring motor is turned on, and after the materials are stirred evenly, the white material discharge port is opened, and the first valve is opened through the white material mass flow meter, and 100-200 kg of white material is added into the reactor body through the white material feed port; the main stirring motor is turned on; the black material discharge port is opened, and the amount of isocyanate raw material added is 5-10 kg, and the fourth valve is opened through the black material mass flow meter, and the black material is evenly sprayed into the reactor body through the black material spray feed port. After the addition is completed, nitrogen is turned on. The air in the reactor body is purged through the pipeline to keep the reactor in a nitrogen protection environment. The heating device on the reactor body is then turned on to react at 80-90°C. The reaction situation in the reactor is detected by the temperature measuring device. When the temperature is too high, the cooling device is turned on to cool the reaction temperature to a suitable temperature. During the reaction, the reaction situation in the reactor can be observed through the manhole. After 0.5 hour of reaction, samples are taken every 0.1 hour to test the hydroxyl value of the reactant. When the hydroxyl value reaches the theoretical value, stirring is stopped and recorded as the operation time. The material is cooled. After the reaction is completed, the reaction product, the white prepolymer, is taken out through the main body discharge port.

[0048] Comparative Example 1: Synthesize a white material prepolymer. The white material, catalyst, etc. for synthesizing the prepolymer are sequentially added into the white material stirring kettle through the feeding port of the white material stirring kettle. Turn on the white material stirring motor to stir the materials evenly. Then open the white material discharge port. Through the white material mass flowmeter, open the first valve, and add 100 kg of white material into the reactor body through the white material feeding port; turn on the main stirring motor; add 5 kg of isocyanate at a time through the manhole; after the addition is completed, open the nitrogen pipeline to purge the air in the reactor body to keep the reactor in a nitrogen protection environment. Then turn on the heating device on the reactor body to react at 80°C. Use a temperature measuring device to detect the reaction situation in the kettle. When the temperature is too high, turn on the cooling device to cool down the reaction temperature to a suitable temperature. During the reaction, the reaction situation in the kettle can be observed through the manhole. After 0.5 hours of reaction, take samples every 0.1 hours to test the hydroxyl value of the reactant. When the hydroxyl value reaches the theoretical value, stop stirring, which is recorded as the operation time. Cool the material. After the reaction is completed, the reaction product, the white material prepolymer, is taken out through the main discharge port.

[0049] Table 1. White prepolymer operating conditions and operating time

[0050] Serial number Black material / kg White material / kg Temperature / ℃ Operation time / h Example 1 5 100 80 1.5 Example 2 8 150 85 1.4 Example 3 10 200 90 1 Comparative Example 1 5 100 80 2.1

[0051] Example 4-6: Synthesize black material prepolymer, add isocyanate raw material into isocyanate raw material tank in sequence through isocyanate raw material feed port, open black material discharge port, through black material mass flow meter, open third valve, add 100-200kg isocyanate into reactor body through black material feed port; start main stirring motor; open white material discharge port, mix evenly white material through white material mass flow meter, open second valve, spray 3-6kg white material evenly into reactor body through white material spray feed port, after adding, open nitrogen pipeline, purify air in reactor body Carry out purging to keep the kettle in a nitrogen protection environment, then turn on the heating device on the reactor body, react at a certain temperature, and use the temperature measuring device to detect the reaction situation in the kettle. When the temperature is too high, turn on the cooling device to cool down the reaction temperature to a suitable temperature. During the reaction, the reaction situation in the kettle can be observed through the manhole. After 0.5 hours of reaction, take samples every 0.1 hours to test the NCO value of the reactant. When the NCO value reaches the theoretical value, stop stirring and record it as the operation time. Cool the material. After the reaction is completed, the reaction product, the black material prepolymer, is taken out through the main body discharge port.

[0052] Comparative Example 2: Synthesize black material prepolymer, add isocyanate raw material into isocyanate raw material tank in sequence through isocyanate raw material feed port, open black material discharge port, open third valve through black material mass flowmeter, add 100kg isocyanate into reactor body through black material feed port; turn on main stirring motor; add 3kg white material into reactor body through manhole at one time, after adding, open nitrogen pipeline, purge air in reactor body, keep nitrogen protection environment in reactor, then turn on heating device on reactor body, react at a certain temperature, detect reaction situation in reactor through temperature measuring device, when temperature is too high, turn on cooling device to cool down, reduce reaction temperature to appropriate temperature, during reaction, observe reaction situation in reactor through manhole, take sample and test NCO value of reactant every 0.1 hour after reaction for 0.5 hour, stop stirring when NCO value reaches theoretical value, record as operation time, cool material, after reaction, take out black material prepolymer through main body discharge port.

[0053] Table 2. Black material prepolymer operating conditions and operating time

[0054] Serial number Black material / kg White material / kg Temperature / ℃ Operation time / h Example 4 100 3 70 1 Example 5 150 4.5 75 1.1 Example 6 200 6 85 0.8 Comparative Example 2 100 3 70 2h

[0055] In summary, the main structure of the reactor of the present invention adopts a sleeved jacket, an external heating system, and a cooling coil is arranged on the inner wall of the reactor, which can not only heat well, but also has a very efficient cooling system to achieve precise adjustment of the reaction temperature.

[0056] During the prepolymer synthesis process, a portion of the material is sprayed through a spray device and then mixed and stirred, which makes the material mixing more thorough and the reaction more complete, reduces the stirring time, improves the mixing uniformity of the raw materials, and increases the synthesis quality and rate of the prepolymer.

[0057] The nitrogen pipeline is arranged near the bottom of the reactor body. When the nitrogen is sprayed downward, the nitrogen is first filled upward from the bottom to prevent the nitrogen from being enriched in the upper part, so that the air in the reactor can be completely exhausted and the occurrence of side reactions can be reduced.

[0058] Both black prepolymer and white prepolymer can be produced in the device respectively, thus optimizing the utilization of the device and saving production costs.

[0059] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention.

Claims

1. A device for producing prepolymer of polyurethane reinforcement material for mining, characterized in that: It comprises a white material feeding system, a black material feeding system, a reactor body (1), and a heating device, a cooling device, a stirring device and a nitrogen pipeline device arranged on the reactor body (1).

2. The mining polyurethane reinforcement material prepolymer production device according to claim 1, characterized in that: The white material feeding system comprises a white material stirring kettle (12) and a white material stirring motor (14) arranged in the middle of the top of the stirring kettle (12); a white material stirring shaft (15) is connected below the white material stirring motor (14); a wall scraper (16) is provided at the upper end of the white material stirring shaft (15) and a stirring blade (17) is provided at the lower end; a catalyst and other raw material feeding port (13) is provided on one side of the top of the white material stirring kettle (12); a white material discharge port (18) is provided at the bottom of the white material stirring kettle (12); a white material connecting pipe (19) is connected to the lower end of the white material connecting pipe (19); and a white material mass flow meter (20) is connected to the right side of the white material connecting pipe (19).

3. The mining polyurethane reinforcement material prepolymer production device according to claim 1, characterized in that: The black material feeding system comprises an isocyanate raw material tank (23), and an isocyanate raw material feeding port (24) opened at the top of the isocyanate raw material tank (23); a black material discharge port (25) is opened at the bottom of the isocyanate raw material tank (23); a black material connecting pipe (26) is connected to the lower section of the black material discharge port (25); and a black material mass flow meter (27) is connected to the left side of the black material connecting pipe (26).

4. The mining polyurethane reinforcement material prepolymer production device according to any one of claims 1 to 3, characterized in that: The reactor body (1) is connected to the white material feeding system and the black material feeding system respectively through two Y-shaped connecting pipes, the two branch pipes of the Y-shaped connecting pipe connected to the white material feeding system are respectively connected to a first valve (21) and a second valve (22), and the two branch pipes of the Y-shaped connecting pipe connected to the black material feeding system are respectively connected to a third valve (28) and a fourth valve (29), a main stirring motor (4) is passed through the middle of the top of the reactor body (1), a white material feeding port (3) and a black material feeding port (5) are symmetrically provided on the left and right sides of the top of the reactor body (1), and a white material spray feeding port (2) and a black material spray feeding port (5) are symmetrically provided on the left and right sides of the top of the reactor body (1). The white material spray feed port (2) is arranged on one side of the white material feed port (5), the black material spray feed port (6) is arranged on one side of the black material feed port (5), the first valve (21), the second valve (22), the third valve (28) and the fourth valve (29) are respectively connected to the white material feed port (3), the white material spray feed port (2), the black material feed port (5) and the black material spray feed port (6), the top of the reactor body (1) is symmetrically provided with a cooling water inlet (71) and a cooling water outlet (72), the top of the reactor body (1) is respectively penetrated with a nitrogen pipeline (8) and a temperature measuring device (10), and the bottom of the reactor body (1) is provided with a main body discharge port (11).

5. The mining polyurethane reinforcement material prepolymer production device according to any one of claims 1 to 3, characterized in that: The heating device comprises a jacket layer (9) arranged on the outer layer of the reactor body (1), a heat transfer oil inlet (91) is provided at the bottom of the jacket layer (9), and a heat transfer oil circulation outlet (92) is provided at the upper left part of the jacket layer (9).

6. The mining polyurethane reinforcement material prepolymer production device according to claim 4, characterized in that: The cooling device comprises an annular cooling coil (7) installed inside the reactor body (1), the annular cooling coil (7) being connected to the cooling water inlet (71) and the cooling water outlet (72) respectively, the cooling water inlet (71) being connected to an external water inlet pipe, and the cooling water outlet (72) being connected to an external drainage pipe.

7. The mining polyurethane reinforcement material prepolymer production device according to claim 6, characterized in that: The stirring device is the main stirring motor (4), and a stirring shaft (41) is connected below the main stirring motor (4). The main stirring shaft (41) is vertically penetrated through the center of the annular cooling coil (7), and an anchor frame stirring paddle (42) is installed below the main stirring shaft (41).

8. The mining polyurethane reinforcement material prepolymer production device according to claim 4, characterized in that: The nitrogen pipeline device is the nitrogen pipeline (8), the nitrogen pipeline (8) comprises a straight pipe (81) and an annular pipe (82), the straight pipe (81) is integrally connected to the annular pipe (82), the nitrogen pipeline (8) is passed through the straight pipe (81) and is arranged in the reactor body (1), and the annular pipe (82) is arranged in the reactor body (1) near the bottom.

9. The mining polyurethane reinforcement material prepolymer production device according to claim 8, characterized in that: Eighteen nozzles (83) are evenly distributed on the annular tube (82), and the nozzles (83) open vertically downward. Manholes are also provided on the white material discharge port (3) and the black material discharge port (5).

10. A method for producing a prepolymer production device for polyurethane reinforcement materials for mining, characterized in that: The following steps are involved: When synthesizing white prepolymer, white material, catalyst, etc. for synthesizing prepolymer are sequentially added into the white material stirring kettle through the white material stirring kettle feed port, the white material stirring motor is turned on, after the materials are stirred evenly, the white material discharge port is opened, the first valve is opened through the white material mass flow meter, and the materials are added into the reactor body through the white material feed port; the main stirring motor is turned on, the black material discharge port is opened, the isocyanate raw material passes through the black material mass flow meter, the fourth valve is opened, and the materials are sprayed evenly into the reactor body through the black material spray feed port. After the addition is completed, the nitrogen pipeline is opened to purge the air in the reactor body, and then the heating device on the reactor body is turned on to react at a certain temperature, and the reaction situation in the reactor is detected through the temperature measuring device. When the temperature is too high, the cooling device is turned on to cool down. During the reaction, the reaction situation in the reactor can be observed through the manhole. After the reaction is completed, the reaction product, the white prepolymer, is taken out through the main body discharge port; When synthesizing the black material prepolymer, the isocyanate raw material is sequentially added into the isocyanate raw material tank through the isocyanate raw material feed port, the black material discharge port is opened, the black material mass flow meter is passed through, the third valve is opened, and the black material is added into the reactor body through the black material feed port; the main stirring motor is turned on, the white material discharge port is opened, the evenly mixed white material passes through the white material mass flow meter, the second valve is opened, and the white material is evenly sprayed into the reactor body through the white material spray feed port. After the addition is completed, the nitrogen pipeline is opened to purge the air in the reactor body, and then the heating device on the reactor body is turned on to react at a certain temperature. The reaction situation in the reactor is detected through the temperature measuring device. When the temperature is too high, the cooling device is turned on to cool down. During the reaction, the reaction situation in the reactor can be observed through the manhole. After the reaction is completed, the reaction product, the black material prepolymer, is taken out through the main body discharge port.

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