Fireproof and waterproof mineral pouring bus production process and production equipment thereof

Abstract

The invention relates to the field of bus production processes and equipment, in particular to a fire-resistant and waterproof mineral pouring bus production process and production equipment thereof.The rack of the fire-resistant and waterproof mineral pouring bus production equipment is provided with a stirring tank, and the stirring tank comprises a tank body and a tank cover; the tank cover is provided with a vacuum feeding hopper, an upper stirring paddle, a lower stirring paddle, an auxiliary stirring paddle, a vacuumizing connector and a liquid material connector, vacuumizing and defoaming operation is carried out in the whole stirring process, the tank body is heated through the water temperature machine, under the pressure in the tank, the boiling point of water is about 70 DEG C, and the liquid material can be uniformly stirred; and the temperature of the material in the tank body and the heat generated by stirring can reach the boiling point temperature, so that the stirred material can be completely dehydrated and defoamed, and various electrical properties of a final bus product can reach higher standards.

Description

Technical Field

[0001] The present invention relates to the field of busbar production processes and equipment, and specifically to a production process and production equipment for fire-resistant and waterproof mineral-cast busbars. Background Art

[0002] With the continuous development of modern projects, the electricity consumption in all walks of life has increased rapidly. Traditional cables can no longer meet large-current transmission systems, and busbars have emerged as the times require. Since the advent of busbars, they have gradually developed from the earliest air type and dense type to the current composite insulation type, and their insulation methods have been continuously improved. However, restricted by conditions such as the use environment, production process, and production equipment, the busbars produced under the existing technical conditions always have certain defects in terms of fire prevention, waterproofing, and anti-aging.

[0003] In the existing busbar production process, vacuum degassing treatment is carried out within a few minutes after adding a hardening agent. The degassing stage is relatively late, the degassing time is insufficient, and the degassing effect is not obvious. As a result, sand holes will appear on the surface of the cast busbar. More importantly, problems often occur in the partial discharge test of the finished product, which greatly affects the electrical performance and safety performance of the busbar.

[0004] In the existing busbar production equipment, including imported equipment, the stirring device adopts a single-axis stirring structure. Its characteristics are: the maximum stirring linear velocity of the liquid material appears at the position of the tank wall, and the stirring of the material cannot be fully conducted to the vicinity of the stirring shaft. The liquid material near the stirring shaft only rotates with the stirring shaft and cannot be fully turned and stirred, resulting in uneven mixing of the newly added material by the liquid material in this part. After pouring, problems such as uneven color on the surface of the casting block often occur, affecting the performance of the busbar casting insulation layer, and further affecting various indicators of the busbar, especially the indicators in terms of strength and stress, such as "linear expansion coefficient 17×10 -6 / ℃" and "strength index IK10" cannot be achieved.

[0005] In addition, a ball valve is used for discharging at the bottom of the pouring busbar stirring tank. Since the ball valve has a valve neck, a dead angle will be formed with the conical surface at the bottom of the tank, resulting in incomplete discharging. There will be accumulated materials at the dead angle part at the bottom of the tank, affecting the stirring effect of the material, and further affecting the quality of the final product. Summary of the Invention

[0006] The purpose of the present invention is to propose a production process and production equipment for fire-resistant and waterproof mineral-cast busbars to solve the problems existing in the above-mentioned prior art.

[0007] The present invention proposes a production equipment for fire-resistant and waterproof mineral-cast busbars, including a frame. A stirring tank is provided on the frame. The stirring tank includes a tank body and a tank cover. The tank cover is provided with: A vacuum feeding hopper for conveying solid materials to the tank body; The first stirring shaft is vertically arranged and is equipped with an upper stirring paddle and a lower stirring paddle; The second stirring shaft is inclined and is equipped with an auxiliary stirring paddle, and the auxiliary stirring paddle is located between the upper stirring paddle and the lower stirring paddle; The vacuum interface is connected to a vacuum pump; The liquid material interface is connected to a liquid material tank.

[0008] Preferably, the upper part of the tank body is provided with a water outlet, and the bottom is provided with a water inlet, and the water outlet and the water inlet are respectively connected to the water inlet and the water outlet of the water temperature machine.

[0009] Preferably, the upper stirring paddle is located above the lower stirring paddle, and the length of the upper stirring paddle is less than the length of the lower stirring paddle.

[0010] Preferably, the end of the lower stirring paddle is provided with a scraper for scraping the inner wall of the tank body. The scrapers are provided in plurality and are arranged staggeredly up and down.

[0011] Preferably, the tank cover is provided with a sealing support, and the first and second stirring shafts respectively pass through one of the sealing supports and are arranged on the tank cover in cooperation with bearings.

[0012] Preferably, the sealing support is connected with a reducer mounting support, and a reducer and a motor are mounted on the reducer mounting support for transmission and respectively driving the first and second stirring shafts to rotate.

[0013] Preferably, the inner surface of the bottom of the tank body is an arc surface, and a discharge port is provided at the lowest point of the arc surface. A ball valve is provided in the discharge port, and the top surface of the valve neck of the ball valve fits with the arc surface.

[0014] Preferably, the vacuum feeding hopper is connected with a Roots blower and a small bag feeding station. The small bag feeding station is used for feeding solid materials. The Roots blower makes the inside of the vacuum feeding hopper form a negative pressure, and the solid materials put into the small bag feeding station are pumped into the vacuum feeding hopper through the negative pressure.

[0015] Preferably, the tank cover is provided with a spare feeding port.

[0016] The present invention also provides a production process for refractory and waterproof mineral casting busbars, which includes the following steps: Step 1: Start the water temperature machine to heat the tank body. After the heating is completed, start the vacuum pump to evacuate the tank body until all the water in the tank body is completely evacuated; Step 2: Resin feeding. Start the vacuum pump to evacuate the tank body, and pump the specified volume of preheated resin in the liquid material tank into the tank body. At the same time, the first and second stirring shafts perform stirring; Step 3: Feeding of powdery solid materials. In the order of increasing particle size, solid silica powder, aluminum hydroxide, titanium dioxide, and masterbatch are successively fed into the tank through the small-bag feeding station. After each material is fed, the first and second stirring shafts stir for 5 - 6 minutes, and each material needs to be stirred until the resin liquid surface is clear and transparent. Step 4: Feeding of granular solid materials. In the order of increasing particle size, quartz sand with a diameter of 0.25 mm, quartz grit with a diameter of 1.25 mm, and quartz gravel with a diameter of 1.75 mm are successively fed into the tank through the small-bag feeding station. After each material is fed, the first and second stirring shafts stir for 7 - 8 minutes, and visually check that it is evenly stirred without caking. Step 5: Add hardener, binder, and defoamer into the tank successively through the hardener injection port on the tank cover. The first and second stirring shafts are used for stirring, and at the same time, turn on the vacuum pump to evacuate the tank to make the pressure value in the tank reach -2 kg. Step 6: Turn off the vacuum pump, turn on the air compressor pump to make the pressure value in the tank reach 4 kg, open the ball valve to discharge the material, and it can be injected into the pre-prepared mold through the discharge pipe and injection gun.

[0017] Preferably, the sum of the masses of the powdery solid materials and the granular solid materials is M. Among them, the mass of the solid silica powder is 0.1M, the mass of the aluminum hydroxide is 0.1M, the mass of the titanium dioxide is 0.05M, the mass of the masterbatch is 0.05M, the mass of the quartz sand with a diameter of 0.25 mm is 0.1M, the mass of the quartz grit with a diameter of 1.25 mm is 0.25M, and the mass of the quartz gravel with a diameter of 1.75 mm is 0.35M.

[0018] Preferably, the solid silica powder passes through a 200-mesh sieve, the aluminum hydroxide flame retardant passes through a 200-mesh sieve, the titanium dioxide passes through a 100-mesh sieve, the masterbatch is a thermosetting masterbatch with a diameter of 50 um.

[0019] Preferably, the powdery solid materials and the granular solid materials are pre-dried before feeding to reduce the moisture content to less than one-thousandth, and the resin is preheated before feeding, and the preheating temperature does not exceed 35°C.

[0020] Preferably, In Step 1, the tank is heated to 50°C; In Step 2, the stirring time is 5 minutes, the rotation speed of the second stirring shaft is 60 revolutions per minute, and the rotation speed of the first stirring shaft is 30 revolutions per minute; In Step 3, the rotation speed of the second stirring shaft is 60 revolutions per minute, and the rotation speed of the first stirring shaft is 40 revolutions per minute; In Step 4, the rotation speed of the second stirring shaft is 60 revolutions per minute, and the rotation speed of the first stirring shaft is 45 revolutions per minute; In step 5, the stirring time is 3 minutes, and the rotation speeds of the first and second stirring shafts are both 60 rpm; Step 6: After turning off the vacuum pump, the speed of the second stirring shaft is 60 rpm, and the speed of the first stirring shaft is reduced to 15 rpm.

[0021] Preferably, solid silicon dioxide powder, aluminum hydroxide, titanium dioxide, masterbatch, quartz sand with a diameter of 0.25 mm, quartz gravel with a diameter of 1.25 mm, and quartz gravel with a diameter of 1.75 mm are packaged in small bags respectively.

[0022] Preferably, after all the materials are discharged, 300 ml of cleaning agent is added, the rotation speed of the first stirring shaft is 100 rpm, cleaning is carried out for more than 15 minutes, stirring is stopped, and the cleaning liquid and residue are discharged.

[0023] Preferably, the mold after pouring is vibrated on a vibrating trolley to remove bubbles. Workers use a plastic brush to brush away the bubbles on the surface. The solidification temperature reaches 70-75°C 30 minutes after pouring. The product and the trolley are placed in a constant temperature and humidity curing workshop for more than 8 hours of drying and curing. After the maintenance is completed, the product and the vibrating trolley are pushed to the demolding area for demolding and mold repair operations. The mold clamps and reinforcements are removed, and the side molds and bottom molds are removed by knocking with a wooden hammer. The burrs and burrs of the busbar product are then manually polished. At this point, the product preparation is completed.

[0024] In the present invention, vacuum degassing is performed during the entire stirring process, and the tank body is heated by a water temperature machine. Under such a pressure in the tank, the boiling point of water is about 70 degrees. The temperature of the material in the tank body plus the heat generated by stirring can reach the boiling point temperature, which can ensure that the stirred material is completely dehydrated and degassed, thereby ensuring that the electrical properties of the final busbar product meet high standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the production equipment of the present invention; Figure 2 It is a structural schematic diagram of the stirring tank of the present invention; Figure 3 It is a structural schematic diagram of the small bag feeding station of the present invention; Figure 4 This is a flow chart of the busbar production process; In the figure: 1, frame; 2, mixing tank; 3, vacuum feeding hopper; 4, Roots blower; 5, electrical cabinet; 6, liquid material tank; 7, small bag feeding station; 8, small bag solid material; 9, vacuum pump; 10, water temperature machine; 21, tank body; 22, tank cover; 211, upper stirring paddle; 212, lower stirring paddle; 213, auxiliary stirring paddle; 214, scraper; 215, temperature sensor; 216, ball valve; 217, discharge port; 221, first stirring shaft; 222, second stirring shaft; 223, sealing support; 224, spare feeding port; 225, valve; 226, reducer mounting support; 227, pipeline interface; 228, motor; 71, base; 72, feeding box; 73, dust removal filter bag; 74, dust removal fan; 75, vibrating screen; 76, buffer device; 77, vacuum feeding pipe. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0027] Please refer to Figures 1-4 , the present invention provides a production device for refractory and waterproof mineral casting busbars, including a frame 1, on which a mixing tank 2 is provided. The mixing tank 2 includes a tank body 21 and a tank cover 22. The tank cover 22 is provided with a vacuum feeding hopper 3, a first stirring shaft 221 and a second stirring shaft 222.

[0028] The production device of the present invention first feeds liquid materials and then solid materials into the tank body 21. After the feeding is completed, the materials are mixed and stirred by the first stirring shaft 221 and the second stirring shaft 222. After the stirring is completed, the materials are discharged from the tank body 21 for casting.

[0029] The tank cover 22 is provided with a vacuum interface, and the vacuum interface is connected to a vacuum pump 9. The tank cover 22 is provided with a liquid material interface, and the liquid material interface is connected to a liquid material tank 6. The liquid material tank 6 is filled with a liquid material (resin) of a pre-measured volume. The vacuum pump 9 makes the tank body 21 form a negative pressure, and under the action of the negative pressure, the liquid material enters the tank body 21 to realize the feeding of the liquid material.

[0030] The vacuum feeding hopper 3 is used to convey solid materials to the tank body 21. The top of the vacuum feeding hopper 3 is provided with a pipeline interface 227, and the pipeline interface 227 is connected to a Roots blower 4. The vacuum feeding hopper 3 is also connected to a small bag feeding station 7. The small bag feeding station 7 is used to feed solid materials. The Roots blower 4 can make the inside of the vacuum feeding hopper 3 form a negative pressure, and the solid materials put into the small bag feeding station 7 are pumped to the vacuum feeding hopper 3 through the negative pressure, thereby realizing the feeding of the solid materials.

[0031] The vacuum charging hopper 3 is connected to a valve 225. After the valve 225 is closed, it has a sealing effect on the tank body 21. At this time, the vacuum pump 9 can be used to evacuate the inside of the tank body 21. The tank body 21 can be made to form a negative pressure under the action of the vacuum pump 9 to realize the feeding of liquid materials, and it can also meet the requirements of different negative pressures for the materials in the tank body 21 during the stirring process.

[0032] The first stirring shaft 221 is vertically arranged and is equipped with an upper stirring paddle 211 and a lower stirring paddle 212. The second stirring shaft 222 is inclined and is equipped with an auxiliary stirring paddle 213. Preferably, the included angle between the first stirring shaft 221 and the second stirring shaft 222 is 30 degrees. The auxiliary stirring paddle 213 is located between the upper stirring paddle 211 and the lower stirring paddle 212 and plays an auxiliary stirring role. The upper stirring paddle 211 is located above the lower stirring paddle 212, and the length of the upper stirring paddle 211 is less than that of the lower stirring paddle 212. This enables the upper stirring paddle 211 and the lower stirring paddle 212 to have different stirring radii, effectively improving the problem that the stirring speed of the materials near the tank wall is fast and the stirring speed of the materials near the first stirring shaft 221 is slow. The auxiliary stirring paddle 213 can push the materials near the first stirring shaft 221 and at positions far from the upper stirring paddle 211 and the lower stirring paddle 212 to the upper stirring paddle 211 and the lower stirring paddle 212, so that they can obtain a larger stirring speed at the positions of the upper stirring paddle 211 and the lower stirring paddle 212, and at the same time, it also has the function of tumbling the materials, thereby making the material stirring more uniform and sufficient.

[0033] The small bag feeding station 7 is a place for putting small bag solid materials 8. The small bag solid materials 8 refer to solid materials packaged in small bags. Through small bag packaging, it is flexible in quantitative measurement and convenient for delivery. The small bag feeding station 7 includes a base 71. A feeding box 72 is provided on the base 71. A dust removal filter bag 73 and a dust removal fan 74 are provided at the top of the feeding box 72, which play a dust removal function. The base 71 is communicated with the feeding box 72. A vibrating screen 75, a buffer device 76 and a vacuum feeding pipe 77 are successively arranged in the base 71 from top to bottom. The vacuum feeding pipe 77 is connected to the vacuum charging hopper 3 through a pipeline. The small bag solid materials 8 are put into the feeding box 72 through the feeding box 72. The solid materials enter the vacuum charging hopper 3 through the vacuum feeding pipe 77 after passing through the vibrating screen 75, thereby realizing the transportation and feeding of the solids.

[0034] The upper part of the tank body 21 is provided with a water outlet, and the bottom is provided with a water inlet. The water outlet and the water inlet are respectively connected to the water inlet and the water outlet of the water temperature machine 10. The water temperature machine 10 is used to preheat the tank body 21 before the liquid material is fed, improving the stirring effect on the material.

[0035] The can cover 22 is provided with a sealing support 223, a first stirring shaft 221 and a second stirring shaft 222, which respectively pass through a sealing support 223 and are arranged on the can cover 22 through bearings. The sealing support 223 is connected with a reducer mounting support 226, and a reducer and a motor 228 are mounted on the reducer mounting support 226. The first stirring shaft 221 and the second stirring shaft 222 are respectively connected to the motor through the reducer. The first stirring shaft 221 and the second stirring shaft 222 are driven to rotate by different motors respectively. Preferably, the first stirring shaft 221 and the second stirring shaft 222 are respectively connected to 15kw and 4kw motors. The can cover 22 is also provided with a hardener injection port for injecting materials such as hardener.

[0036] The bottom of the tank body 21 is provided with a discharge port 217. The inner surface of the bottom of the tank body 21 is an arc surface, and the discharge port 217 is arranged at the lowest point of the arc surface. A ball valve 216 is arranged in the discharge port 217. The top surface of the valve neck of the ball valve 216 fits with the arc surface of the inner surface of the tank body 21, which can ensure that there will be no dead corners and no residual materials left during discharging.

[0037] The present invention also includes an electrical cabinet 5 and an electrical control system. A temperature sensor 215 is arranged at the bottom of the tank body 21. Through the temperature sensor 215 and the electrical control system, the staff can know the temperature inside the tank body 21 at any time so as to perform corresponding operations. Under this system, the equipment can be manually controlled to realize functions such as feeding of solid materials, feeding of liquid materials, stirring and discharging.

[0038] Preferably, the present invention is provided with a pressurizing device for the tank body 21. Preferably, the tank body 21 or the can cover 22 is connected with an air compressor pump. In the present invention, a scraper 214 is arranged at the end of the lower stirring paddle 212. The scraper 214 is used for scraping the inner wall of the tank body 21. A plurality of scrapers 214 are arranged and are staggered up and down. Through the scraper 214, it can be avoided that materials adhere to the inner wall of the tank body 21 during the stirring process, and the inner wall of the tank body 21 can also be cleaned after the materials are poured.

[0039] Preferably, a spare feeding port 224 is arranged on the can cover 22. When a feeding failure occurs, feeding can be carried out through the spare feeding port 224.

[0040] The present invention also provides a production process for refractory and waterproof mineral casting busbars, including the following steps: Step 1: Start the water temperature machine 10 to heat the tank body 21. After the heating is completed, start the vacuum pump 9 to evacuate the tank body 21 until all the water in the tank body 21 is completely evacuated; Step 2: Resin feeding. Start the vacuum pump 9 to evacuate the tank body 21, and pump the specified volume of preheated resin in the liquid material tank 6 into the tank body 21. At the same time, the first and second stirring shafts 222 perform stirring; Step 3: Feeding of powdery solid materials. In the order of increasing particle size, solid silica powder, aluminum hydroxide, titanium dioxide, and masterbatch are sequentially fed into the tank body 21 through the small-bag feeding station 7. After each material is fed, the first and second stirring shafts 222 stir for 5 - 6 minutes, and after each material is fed, it is stirred until the resin liquid surface is clear and transparent; Step 4: Feeding of granular solid materials. In the order of increasing particle size, quartz sand with a diameter of 0.25 mm, quartz grit with a diameter of 1.25 mm, and quartz gravel with a diameter of 1.75 mm are sequentially fed into the tank body 21 through the small-bag feeding station 7. After each material is fed, the first and second stirring shafts 222 stir for 7 - 8 minutes, and visually check that it is evenly stirred without caking; Step 5: Through the hardener injection port on the tank cover 22, hardener, binder, and defoamer are sequentially added into the tank body 21, and the first and second stirring shafts 222 are stirred. At the same time, the vacuum pump 9 is turned on to evacuate the tank body 21 to make the pressure value in the tank body 21 reach -2 kg; Step 6: Turn off the vacuum pump 9, turn on the air compressor pump to make the pressure value in the tank body 21 reach 4 kg, open the ball valve 216 for discharging, and it can be injected into the pre-prepared mold through the discharge pipe via the injection gun.

[0041] In the above production process, the sum of the masses of the powdery solid materials and the granular solid materials is M. Among them, the mass of the solid silica powder is 0.1M, the mass of the aluminum hydroxide is 0.1M, the mass of the titanium dioxide is 0.05M, the mass of the masterbatch is 0.05M, the mass of the quartz sand with a diameter of 0.25 mm is 0.1M, the mass of the quartz grit with a diameter of 1.25 mm is 0.25M, and the mass of the quartz gravel with a diameter of 1.75 mm is 0.35M.

[0042] In the above production process, the solid silica powder passes through a 200-mesh sieve, the aluminum hydroxide flame retardant passes through a 200-mesh sieve, the titanium dioxide passes through a 100-mesh sieve, the masterbatch is a thermosetting masterbatch with a diameter of 50 um.

[0043] In the above production process, the powdery solid materials and the granular solid materials are subjected to dry pretreatment before feeding. The moisture can be dried with an oven to make the moisture content drop below one-thousandth. The resin is preheated before feeding, and the preheating temperature does not exceed 35°C.

[0044] In the above production process, in Step 1, the tank body 21 is heated to 50°C; In Step 2, the stirring time is 5 minutes, the rotation speed of the second stirring shaft 222 is 60 revolutions per minute, and the rotation speed of the first stirring shaft 221 is 30 revolutions per minute; In Step 3, the rotation speed of the second stirring shaft 222 is 60 revolutions per minute, and the rotation speed of the first stirring shaft 221 is 40 revolutions per minute; In Step 4, the rotation speed of the second stirring shaft 222 is 60 revolutions per minute, and the rotation speed of the first stirring shaft 221 is 45 revolutions per minute; In Step 5, the stirring time is 3 minutes, and the rotation speeds of both the first and second stirring shafts 222 are 60 revolutions per minute; In Step 6, after the vacuum pump 9 is closed, the rotation speed of the second stirring shaft 222 is 60 revolutions per minute, and the rotation speed of the first stirring shaft 221 drops to 15 revolutions per minute.

[0045] In the above production process, the solid silica powder, aluminum hydroxide, titanium dioxide, color masterbatch, quartz sand with a diameter of 0.25 mm, quartz gravel with a diameter of 1.25 mm, and quartz gravel with a diameter of 1.75 mm are respectively packed in small bags.

[0046] In the above production process, after all the materials are discharged, 300 milliliters of cleaning agent is added, the rotation speed of the first stirring shaft 221 is 100 revolutions per minute, and it is cleaned for more than 15 minutes. Then the stirring is stopped, and the cleaning liquid and residues are discharged.

[0047] In the above production process, for the cast mold, vibration degassing operation is carried out on the vibrating table car. Workers use a plastic brush to brush off the surface bubbles. 30 minutes after casting, the solidification temperature reaches 70 - 75 °C. The product together with the table car is placed in a constant temperature and humidity curing workshop for drying and curing for more than 8 hours.

[0048] After the curing is completed, the product and the vibrating table car are pushed to the mold removal area for mold removal and mold repair operations. The clamps and stiffeners of the mold are removed, and then the side mold and bottom mold are removed by tapping with a wooden hammer. Then the burrs and rough edges of the busbar product are manually polished. Thus, the product preparation is completed.

[0049] In the present invention, the pressure-bearing grade of the tank body is increased to 4 kg. Vacuum degassing operation is carried out throughout the stirring process, and the tank body is heated by a water temperature machine to a temperature of 50 °C. Under such tank pressure, the boiling point of water is about 70 °C. The material temperature in the tank body plus the heat generated by stirring can reach this boiling point temperature, which can ensure that the stirred materials are completely dehydrated and degassed, thereby ensuring that the electrical properties of the final busbar product reach a high standard.

[0050] The following table shows the product inspection and product indicators of the present invention, recording the inspection items and inspection parameter results of the product. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

Claims

1. A production device for refractory and waterproof mineral-cast busbars, comprising a frame, on which a mixing tank is provided, the mixing tank including a tank body and a tank cover, characterized in that, The lid of the tank is provided with: A vacuum feeding hopper for conveying solid materials to the tank body; A first stirring shaft, which is vertically arranged and is equipped with an upper stirring paddle and a lower stirring paddle; A second stirring shaft, which is inclined and is equipped with an auxiliary stirring paddle, and the auxiliary stirring paddle is located between the upper stirring paddle and the lower stirring paddle; A vacuum pumping interface, which is connected to a vacuum pump; A liquid material interface, which is connected to a liquid material tank.

2. The refractory and waterproof mineral casting busbar production equipment according to claim 1, characterized in that, The upper part of the tank body is provided with a water outlet, and the bottom is provided with a water inlet. The water outlet and the water inlet are respectively connected to the water inlet and the water outlet of a water temperature machine.

3. The refractory and waterproof mineral casting busbar production equipment according to claim 1, characterized in that The upper stirring paddle is located above the lower stirring paddle, and the length of the upper stirring paddle is less than the length of the lower stirring paddle.

4. The refractory and waterproof mineral casting busbar production equipment according to claim 1, characterized in that, The end of the lower stirring paddle is provided with a scraper for scraping the inner wall of the tank body. The scrapers are provided in multiple numbers and are arranged staggeredly up and down.

5. The refractory and waterproof mineral casting busbar production equipment according to claim 1, characterized in that, The lid of the tank is provided with a sealing support. The first and second stirring shafts respectively pass through the lid of the tank through one of the sealing supports and are fitted with bearings.

6. The refractory and waterproof mineral casting busbar production equipment according to claim 5, characterized in that, The sealing support is connected to a reducer mounting support, and a reducer and a motor are mounted on the reducer mounting support for transmission and respectively driving the first and second stirring shafts to rotate.

7. The refractory and waterproof mineral casting busbar production equipment according to claim 1, characterized in that, The inner surface of the bottom of the tank body is an arc surface, and a discharge port is provided at the lowest point of the arc surface. A ball valve is provided in the discharge port, and the top surface of the valve neck of the ball valve fits with the arc surface.

8. The refractory and waterproof mineral casting busbar production equipment according to claim 1, characterized in that The vacuum feeding hopper is connected to a Roots blower and a small bag feeding station. The small bag feeding station is used for feeding solid materials. The Roots blower makes the inside of the vacuum feeding hopper form a negative pressure, and the solid materials put into the small bag feeding station are pumped into the vacuum feeding hopper through the negative pressure.

9. The refractory and waterproof mineral casting busbar production equipment according to claim 1, characterized in that, The lid of the tank is provided with a spare feeding port.

10. A production process for a refractory and waterproof mineral-cast busbar, characterized in that, It includes the following steps: Step 1: Turn on the water temperature machine to heat the tank body. After the heating is completed, turn on the vacuum pump to pump the vacuum of the tank body until the water in the tank body is completely pumped dry; Step 2: Resin feeding. Turn on the vacuum pump to pump the vacuum of the tank body, and pump the specified volume of preheated resin in the liquid material tank into the tank body. At the same time, the first and second stirring shafts perform stirring; Step 3: Powdered solid material feeding. In the order of increasing particle size, solid silica powder, aluminum hydroxide, titanium dioxide and masterbatch are sequentially put into the tank body through the small bag feeding station. After each material is fed, the first and second stirring shafts stir for 5-6 minutes, and each material needs to be stirred until the resin liquid level is clear and transparent; Step 4: Granular solid material feeding. In the order of increasing particle size, quartz sand with a diameter of 0.25mm, quartz grit with a diameter of 1.25mm and quartz gravel with a diameter of 1.75mm are sequentially put into the tank body through the small bag feeding station. After each material is fed, the first and second stirring shafts stir for 7-8 minutes, and visually check that the stirring is uniform and there is no agglomeration; Step 5: Add hardener, binder and defoamer into the tank body in sequence through the hardener injection port on the lid of the tank. The first and second stirring shafts perform stirring. At the same time, turn on the vacuum pump to pump the vacuum of the tank body so that the pressure value in the tank body reaches -2 kg; Step 6: Turn off the vacuum pump, turn on the air compressor pump so that the pressure value in the tank body reaches 4 kg, open the ball valve to discharge the material, and it can be injected into a pre-prepared mold through a discharge pipe and a filling gun.

11. The production process of the refractory and waterproof mineral casting busbar according to claim 10, characterized in that, The sum of the masses of powdered solid materials and granular solid materials is M, among which the mass of solid silica powder is 0.1M, the mass of aluminum hydroxide is 0.1M, the mass of titanium dioxide is 0.05M, the mass of masterbatch is 0.05M, the mass of quartz sand with a diameter of 0.25mm is 0.1M, the mass of quartz gravel with a diameter of 1.25mm is 0.25M, and the mass of quartz gravel with a diameter of 1.75mm is 0.35M.

12. The production process of the fireproof and waterproof mineral casting busbar according to claim 10, characterized in that, Solid silica powder passed through a 200-mesh sieve, aluminum hydroxide flame retardant passed through a 200-mesh sieve, titanium dioxide passed through a 100-mesh sieve, and the masterbatch was a thermosetting masterbatch with a diameter of 50um.

13. The production process of the refractory and waterproof mineral casting busbar according to claim 10, characterized in that, The powdered solid materials and granular solid materials are dried and pre-treated before being fed, so that the moisture content is reduced to less than one thousandth. The resin is preheated before being fed, and the preheating temperature does not exceed 35°C.

14. The process for producing a fire-resistant and waterproof mineral cast busbar according to claim 10, characterized in that: Step 1: Heat the tank to 50°C; In step 2, the stirring time is 5 minutes, the speed of the second stirring shaft is 60 rpm, and the speed of the first stirring shaft is 30 rpm; In step 3, the rotation speed of the second stirring shaft is 60 rpm, and the rotation speed of the first stirring shaft is 40 rpm; In step 4, the rotation speed of the second stirring shaft is 60 rpm, and the rotation speed of the first stirring shaft is 45 rpm; In step 5, the stirring time is 3 minutes, and the rotation speeds of the first and second stirring shafts are both 60 rpm; Step 6: After turning off the vacuum pump, the speed of the second stirring shaft is 60 rpm, and the speed of the first stirring shaft is reduced to 15 rpm.

15. The production process of the refractory and waterproof mineral casting busbar according to claim 10, characterized in that, Solid silica powder, aluminum hydroxide, titanium dioxide, masterbatch, quartz sand with a diameter of 0.25mm, quartz gravel with a diameter of 1.25mm and quartz gravel with a diameter of 1.75mm are packed in small bags respectively.

16. The production process of the fireproof and waterproof mineral casting busbar according to claim 10, characterized in that, After all the materials are discharged, add 300 ml of cleaning agent, the speed of the first stirring shaft is 100 rpm, and cleaning is carried out for more than 15 minutes. Then, the stirring is stopped and the cleaning liquid and residue are discharged.

17. The production process of the fireproof and waterproof mineral casting busbar according to claim 10, characterized in that, After the casting is completed, the mold is vibrated on a vibrating trolley to remove bubbles. Workers use plastic brushes to remove bubbles on the surface. The solidification temperature reaches 70-75℃ 30 minutes after the casting is completed. The product and the trolley are placed in a constant temperature and humidity maintenance workshop for more than 8 hours of drying and maintenance. After the maintenance is completed, the product and the vibrating trolley are pushed to the demolding area for demolding and mold repair operations. The mold clamps and reinforcements are removed, and the side molds and bottom molds are removed by knocking with a wooden hammer. The burrs and burrs of the busbar product are then manually polished. At this point, the product preparation is completed.

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