Vacuum integrated production system and production method for high-performance concrete

Abstract

The invention discloses a vacuum integrated production system and method for high-performance concrete, the vacuum integrated production system comprises a stirring and pouring device, the stirring and pouring device comprises a pouring chamber and a stirring chamber, one of the pouring chamber and the stirring chamber is connected with a separation unit, the stirring chamber is provided with a feeding port and is connected with a feeding sealing unit, and the feeding sealing unit is provided with a discharging port; the pouring chamber is provided with an access and connected with an access sealing unit; the vacuum device comprises a vacuum pump set, and the two input ends of the vacuum pump set communicate with the pouring chamber and the stirring chamber correspondingly and are connected with a first vacuum valve and a second vacuum valve correspondingly; and a feeding device. According to the vacuum integrated production system and production method for the high-performance concrete, inner cavities of the stirring chamber and the pouring chamber are vacuumized, so that production materials are mixed and poured in a vacuum environment, bubbles are completely discharged out of concrete grout, a compact concrete member with a flat surface is formed, the structural strength is improved, and the decoration effect is improved; finally, the product quality is improved and the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of building material preparation technology, and in particular to a vacuum integrated production system and method for high-performance concrete. Background Technology

[0002] Concrete is the most common material in construction engineering and occupies an important position in construction. Concrete products are made by mixing cement as a binder, sand and stone as aggregates, water in a certain proportion, adding admixtures and additives, and then pouring and curing the mixture.

[0003] During the production process, concrete typically develops numerous tiny pits on its surface. This is because a large number of tiny air bubbles easily become trapped in the concrete slurry during mixing and pouring. These tiny air bubbles, unable to rise and escape smoothly, become trapped on the surface of the concrete slurry. When the concrete hardens, some of these bubbles burst, forming pits on the surface. This not only affects the appearance and decorative effect of the product but also reduces the strength and wear resistance of the concrete surface. Furthermore, some air bubbles trapped inside the concrete can reduce the overall structural strength of the concrete component. The more air contained within, the lower the structural strength of the concrete component, and the more significant the decrease in its density, thus affecting the strength of the concrete structure and shortening its service life.

[0004] Therefore, it is necessary to improve the existing equipment and methods for producing concrete components. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects in the prior art and provide a vacuum integrated production system and method for high-performance concrete that eliminates air bubbles, improves density and structural strength to ensure production quality.

[0006] To address the aforementioned technical problems, this invention provides a vacuum integrated production system for high-performance concrete, comprising: A mixing and casting device includes a casting chamber and a mixing chamber fixed above the casting chamber. The top of the casting chamber and the bottom of the mixing chamber are respectively provided with a material discharge port and a material outlet that are directly opposite and communicate with each other. One of the casting chamber and the mixing chamber is connected by a partition unit for separating the inner cavities of the two. The mixing chamber is provided with a material inlet and is connected with a material inlet sealing unit for sealing and covering the material inlet. The mixing chamber contains a mixing unit and is connected with a rotating unit for driving the mixing unit to rotate. The casting chamber is provided with an inlet and an outlet and is connected with an inlet and outlet sealing unit for sealing and covering the inlet and outlet. A vacuum device includes a vacuum pump unit, which has two input ends. The two input ends of the vacuum pump unit are respectively connected to the casting chamber and the mixing chamber and are respectively connected to a first vacuum valve and a second vacuum valve. A feeding device is used to add concrete production raw materials into the mixing chamber through the feed inlet.

[0007] Preferably, to reduce the burden on workers, a mobile device is also included, the mobile device comprising: A movable component and a movable frame, wherein the movable component drives the movable frame to reciprocate between the pouring station and the pick-and-place station; A support platform, horizontally positioned above the movable frame, is used to place the casting mold; The vibratory machine has its outer casing fixed on a movable frame, and its output end connected to the bottom surface of the support platform. At the pouring station, the projection of the material outlet on the horizontal plane is located within the projection of the pouring mold on the horizontal plane; at the pick-and-place station, the moving device is located outside the pouring room.

[0008] Preferably, in order to facilitate control of the vibration amplitude of the support platform, the moving device further includes a limiting spring disposed between the moving frame and the support platform, wherein the limiting spring and the vibrator are evenly distributed between the support platform and the moving frame.

[0009] Preferably, to facilitate the conveying of raw materials for concrete production, the feed inlet is located at the top of the mixing chamber, and the feeding device includes: The water supply assembly includes a water tank located above the feed inlet. The top and bottom of the water tank are respectively fixedly connected to a water inlet pipe and a water outlet pipe. The water inlet pipe and the water outlet pipe are respectively connected to a water inlet valve and a water outlet valve. The bottom of the water outlet pipe is provided with a water outlet located directly above the feed inlet. The material conveying assembly includes a bucket elevator, wherein the feed end and discharge end of the bucket elevator are respectively located at the bottom and top and are respectively connected to an upwardly inclined feed pipe and a downwardly inclined discharge pipe. A material guiding unit is provided between the bottom end of the discharge pipe and the feed inlet for feeding the material conveyed by the bucket elevator into the inner cavity of the mixing chamber through the feed inlet.

[0010] Preferably, in order to ensure the sealing of the mixing chamber during mixing, the feeding sealing unit includes a feeding cover, a translation unit that drives the feeding cover to move horizontally, and an elastic feeding sealing ring disposed between the feeding cover and the feeding port.

[0011] Preferably, in order to ensure the airtightness of the pouring chamber during pouring, the inlet and outlet sealing unit includes an inlet and outlet door, a lifting unit that drives the inlet and outlet door to move in the vertical direction, and an elastic inlet and outlet sealing ring disposed between the inlet and outlet door and the inlet and outlet.

[0012] Preferably, to avoid wear on the feed sealing ring and the inlet / outlet sealing ring, ensure their service life, and maintain sealing performance during concrete slurry mixing and pouring, thereby improving the final product quality, both the feed sealing ring and the inlet / outlet sealing ring are hollow and closed-loop sealing rings. The feed sealing ring is fixedly connected to a first air inlet pipe and a first air outlet pipe, each equipped with a first air inlet valve and a first air outlet valve. The inlet / outlet sealing ring is fixedly connected to a second air inlet pipe and a second air outlet pipe, each equipped with a second air inlet valve and a second air outlet valve. The vacuum integrated production system also includes a gas delivery device for inputting high-pressure gas into the first air inlet pipe and the second air inlet pipe.

[0013] Preferably, in order to facilitate the delivery of clean high-pressure gas to the feed seal ring and the inlet / outlet seal ring and to control the expansion and deformation of the feed seal ring and the inlet / outlet seal ring, the gas delivery device includes an air compressor, a buffer tank and a dehumidifier connected in sequence, and a filter is provided between the buffer tank and the air compressor and / or between the outlet side of the dehumidifier.

[0014] Preferably, in order to facilitate the separation and connection between the mixing chamber and the pouring chamber, the separation unit includes a horizontal partition and a telescopic unit for driving the partition to move horizontally. The top surface of the partition is sealed to the bottom of the discharge port, and the pouring chamber is provided with a sliding groove that slides with the partition.

[0015] To address the aforementioned technical problems, the present invention also provides a vacuum integrated production system for high-performance concrete, comprising the following steps: S10. Preparation: Send the mold to be poured into the pouring chamber, so that the opening of the mold is directly below the material discharge port at the top of the pouring chamber, and then close the pouring chamber; at the same time, separate the inner cavity of the pouring chamber from the inner cavity of the mixing chamber, add the raw materials for producing concrete into the mixing chamber, and then close the mixing chamber. S20. Vacuum mixing: Start the vacuum pump unit to evacuate the pouring chamber and the mixing chamber, so that the air pressure in the pouring chamber and the mixing chamber is maintained within the preset negative pressure range. Under this condition, the raw materials in the mixing chamber are mixed to form a uniformly mixed concrete slurry. S30, Vacuum casting: Maintain a negative pressure environment in the casting chamber and the mixing chamber, and connect the two. Then, pour the concrete slurry obtained in S20 into the mold and start the vibrator to vibrate the mold to remove the air in the concrete slurry. S40. Material Removal: Turn off the vibrator and vacuum pump unit, open the pouring chamber, remove the mold, and after the concrete slurry in the mold has solidified, separate the product from the mold.

[0016] In summary, compared with the prior art, the vacuum integrated production system and method for high-performance concrete of the present invention, by evacuating the mixing chamber and the pouring chamber, mixes and pours the production materials in a vacuum environment, ensuring that air bubbles are completely expelled from the concrete slurry, thereby forming a dense and smooth concrete component, increasing structural strength and improving decorative effect, ultimately improving product quality and extending service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 Top view; Figure 3 This is a structural schematic diagram from another perspective of the present invention; Figure 4 This is a cross-sectional structural diagram of the present invention; Figure 5 yes Figure 4 Enlarged view of part A; Figure 6 yes Figure 4 Enlarged view of part B; Figure 7 This is a schematic diagram of the connection structure of the frame, dust removal component and material conveying component of the present invention; Figure 8 yes Figure 7 An explosion diagram; Figure 9 yes Figure 8 Enlarged view of part C; Figure 10 yes Figure 8 Enlarged view of part D; Figure 11 yes Figure 8 Enlarged view of part E; Figure 12 This is a schematic diagram of the connection structure of the frame, mixing chamber, casting chamber and water conveying assembly of the present invention; Figure 13 yes Figure 12 Cross-sectional structural diagram; Figure 14 yes Figure 13 Enlarged view of part F; Figure 15 yes Figure 13 Enlarged view of part G; Figure 16 This is a schematic diagram of the water outlet pipe of the present invention; Figure 17This is a schematic diagram of the stirring chamber of the present invention; Figure 18 yes Figure 17 An explosion diagram; Figure 19 yes Figure 12 Partial structural diagram; Figure 20 This is a schematic diagram of the feeding sealing unit of the present invention; Figure 21 yes Figure 20 An explosion diagram; Figure 22 yes Figure 20 Cross-sectional structural diagram; Figure 23 This is a schematic diagram of the connection structure between the invention frame and the casting chamber; Figure 24 yes Figure 23 An explosion diagram; Figure 25 yes Figure 24 Enlarged view of the H section; Figure 26 This is a schematic diagram of the structure of the mobile device of the present invention; Figure 27 yes Figure 27 An explosion diagram; Figure 28 yes Figure 12 An explosion diagram; In the diagram: 1. Frame; 11. Base; 111. Outer slide rail; 112. Inner slide rail; 113. Slot; 12. Maintenance platform; 121. Maintenance step; 122. Maintenance fence; 123. Guide rail; 124. Upper slide rail; 13. Loading platform; 131. Loading step; 132. Loading fence; 14. Controller; 15. Maintenance frame; 151. Top plate; 152. Dust suction port; 153. Sliding door; 16. Vertical slide rail; 161. Guide groove; 162. Vertical frame; 17. Horizontal beam; 2. Casting chamber; 201. Inlet / outlet; 202. Drop port; 21. Separation unit; 211. Partition; 212. Telescopic unit; 213. Slide groove; 22. Inlet / outlet sealing unit; 221. Inlet / outlet door; 2211. Observation window; 22 12. Guide wheel; 222. Lifting unit; 223. Inlet and outlet sealing ring; 2231. Second air inlet pipe; 2232. Second air outlet pipe; 2233. Second air inlet valve; 2234. Second air outlet valve; 23. Supplementary light; 24. Camera; 25. Barometer; 26. Drain pipe; 3. Mixing chamber; 301. Feed inlet; 302. Discharge outlet; 31. Feed sealing unit; 311. Feed cover; 312. Translation unit; 3121. Drive unit; 31211. Drive motor; 31212. Gearbox; 31213. Connecting seat; 31214. Concentric tube; 31215. Concentric shaft; 31216. Outer casing; 31217. Outer cover; 3122. Translation roller; 3123. Roller frame; 3124 3125. Translation bearing; 3126. Sprocket; 3127. Chain; 318. Feed seal ring; 3131. First air inlet pipe; 3132. First air outlet pipe; 3133. First air inlet valve; 3134. First air outlet valve; 315. Enclosure frame; 316. Stirring unit; 327. Central shaft; 328. Stirring shaft; 329. Rotary bearing; 320. Rotating unit; 331. Rotary motor; 332. Synchronous pulley; 333. Synchronous belt; 34. Sealing shell; 45. Vacuum device; 41. Vacuum pump assembly; 42. First vacuum valve; 43. Second vacuum valve; 44. First vacuum tube; 45. Second vacuum tube; 46. Silencer; 57. Feeding device; 58. Water supply assembly; 511. Water tank; 512. Water inlet pipe; 513. 5122. Water inlet valve; 513. Liquid level sensor; 514. Water outlet pipe; 5151. Water outlet valve; 5152. Water outlet; 52. Material conveying assembly; 521. Bucket elevator; 522. Feed pipe; 523. Discharge pipe; 524. Material guiding unit; 5241. Material guiding hopper; 5242. Bucket cover; 5243. Vibrator; 525. Feed hopper; 6. Moving device; 61. Moving assembly; 611. Moving roller; 612. Moving base; 613. Moving motor; 62. Moving frame; 63. Support platform; 64. Vibrator; 65. Limit spring; 66. Protective sleeve; 7. Air conveying device; 71. Air compressor; 72. Buffer tank; 73. Dehumidifier; 74. Filter; 75. Air conveying pipe; 8. Dust removal device; 81. Air pump;82. Outer filter canister; 821. Upper housing; 8211. Upper flange; 822. Lower housing; 8221. Lower flange; 823. Bolt; 824. Nut; 83. Inner filter canister; 831. Outer flange; 84. First dust suction hood; 85. Dust removal pipe; 851. First dust removal valve; 852. Second dust removal valve; 86. Suction pipe; 87. Second dust suction hood; 88. Suction housing; 881. Suction base. Detailed Implementation

[0018] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0019] like Figures 1-28 As shown, a vacuum integrated production system for high-performance concrete according to the present invention includes: A mixing and pouring device includes a pouring chamber 2 and a mixing chamber 3 fixed above the pouring chamber 2. The top of the pouring chamber 2 and the bottom of the mixing chamber 3 are respectively provided with a material discharge port 202 and a material discharge port 302 that are directly connected to each other. One of the pouring chamber 2 and the mixing chamber 3 is connected to a partition unit 21 for separating the inner cavities of the two. The mixing chamber 3 is provided with a material inlet 301 and is connected to a material inlet sealing unit 31 for sealing and covering the material inlet 301. The mixing chamber 3 has a built-in mixing unit 32 and is connected to a rotating unit 33 for driving the mixing unit 32 to rotate. The pouring chamber 2 is provided with an inlet and outlet 201 and is connected to an inlet and outlet sealing unit 22 for sealing and covering the inlet and outlet 201. Vacuum device 4 includes vacuum pump group 41. Vacuum pump group 41 has two input ends. The two input ends of vacuum pump group 41 are respectively connected to casting chamber 2 and mixing chamber 3 and are respectively connected to first vacuum valve 42 and second vacuum valve 43. The feeding device 5 is used to add concrete production raw materials into the mixing chamber 3 through the feed inlet 301.

[0020] When using this high-performance concrete vacuum integrated production system, preparation work must first be carried out. This preparation work is divided into two types, which can be performed simultaneously or in any order. The two types of preparation work are as follows: First, the mold for pouring concrete slurry is horizontally placed into the pouring chamber 2, so that the opening of the mold is directly opposite the material outlet 202 of the pouring chamber 2, and the projection of the material outlet 202 on the horizontal plane is located within the projection of the top opening of the mold. Then, the inner cavity of the pouring chamber 2 is isolated from the outside through the inlet and outlet sealing unit 22. Secondly, while ensuring that the partition unit 21 separates the inner cavity of the pouring chamber 2 from the inner cavity of the mixing chamber 3, concrete production raw materials are added to the mixing chamber 3 through the feeding device 5. In this invention, the concrete production raw materials include, but are not limited to, cement, silica fume, quartz sand, fiber and water-reducing agent. After the production raw materials are added, the feeding sealing unit 31 seals and covers the feeding port 301, so that the inner cavity of the mixing chamber 3 is isolated from the outside.

[0021] After the above two preparatory works are completed, the inner cavities of the pouring chamber 2 and the mixing chamber 3 are isolated from the outside world and separated from each other. On this basis, the vacuum device 4 is activated to remove the air in the pouring chamber 2 and the mixing chamber 3, so that the interior of the pouring chamber 2 and the mixing chamber 3 is maintained within a preset vacuum negative pressure range. In this invention, the pouring chamber 2 and the mixing chamber 3 are maintained in a negative pressure environment below 0.08 MPa. The rotating unit 33 and the mixing unit 32 are activated. The rotating unit 33 drives the mixing unit 32 to rotate in the inner cavity of the mixing chamber 3 to stir the production materials, so that the production materials are mixed evenly. During the mixing process, the air between the materials can be discharged through the vacuum device 4, minimizing the air in the concrete production materials and ensuring the compactness of the concrete slurry.

[0022] After stirring in a vacuum environment for a certain period of time (8-15 minutes in this invention, but other time ranges can also be selected), the separating unit 21 is activated, so that the inner cavity of the mixing chamber 3 is connected to the inner cavity of the pouring chamber 2. At the same time, the concrete slurry in the upper mixing chamber 3 enters the previously placed mold through the discharge port 302 and the drop port 202. The mold facilitates the pouring of the concrete slurry to form a predetermined shape. After being placed in the pouring chamber 2 for a period of time until the pouring is completed and the surface of the concrete slurry remains still, the vacuum device 4 is used to evacuate the pouring chamber 2 to facilitate the expulsion of air from the concrete slurry and further enhance the density of the concrete slurry.

[0023] Afterwards, the inlet and outlet 201 are opened through the sealing unit 22 to remove the mold and the concrete slurry inside the mold, which has been degassed of all gas. The concrete slurry then solidifies within the mold, and the solidified concrete component is removed. Because the entire production process ensures that all gas is expelled from the concrete slurry and that a vacuum is maintained during mixing and pouring, air bubbles are prevented from forming inside and on the surface of the concrete slurry. This ensures the smoothness of the concrete component surface, preventing the formation of tiny pits that could affect the product's decorative effect. Furthermore, it ensures the density of the concrete component, increasing structural strength and thus improving the quality and extending the service life of the concrete building product.

[0024] A further improvement is that the vacuum integrated production system for high-performance concrete of the present invention also includes a moving device 6, which comprises: The movable component 61 and the movable frame 62 are used to drive the movable frame 62 to reciprocate between the pouring station and the pick-up station. The support platform 63 is horizontally positioned above the movable frame 62 and is used to place the casting mold; The vibratory machine 64 has its outer casing fixed on the movable frame 62, and its output end is connected to the bottom surface of the support platform 63. At the pouring station, the projection of the material outlet 202 on the horizontal plane is located within the projection of the pouring mold on the horizontal plane. At the pick-and-place station, the moving device 6 is located outside the pouring chamber 2.

[0025] The moving component 61 of the moving device 6 can drive the moving frame 62 and the support platform 63 above the moving frame 62 to move. The support platform 63 carries the mold, which can then move the mold back and forth between the pouring station and the pick-up station through the inlet and outlet 201, that is, move inside and outside the pouring chamber 2, reducing the workload of production workers. Moreover, during the pouring process, the vibrator 64 can be started, which can drive the mold above the support platform 63 to vibrate, thereby causing the concrete slurry inside the mold to shake. Through vibration, a small number of residual air bubbles in the concrete slurry can float to the surface and be discharged from the concrete slurry and pouring chamber 2, further improving the density and structural strength of the final product.

[0026] A further improvement is that the moving device 6 also includes a limiting spring 65 disposed between the moving frame 62 and the support platform 63, and the limiting spring 65 and the vibrator 64 are evenly distributed between the support platform 63 and the moving frame 62.

[0027] The bearing platform 63 is supported by the limiting spring 65, and the amplitude of the bearing platform 63 is limited to prevent the vibration amplitude of the mold driven by the vibrator 64 from being too large, which would cause the concrete slurry to overflow from the mold during the pouring vibration process and ultimately affect the molding quality of the product.

[0028] like Figure 26 and Figure 27As shown, in the moving device 6 of the present invention, the support platform 63 is a horizontal rectangular plate structure, the moving frame 62 is horizontally arranged below the support platform 63, the moving frame 62 and the support platform 63 are in the same length direction and the same width direction, the limiting springs 65 are evenly distributed along the circumference of the support platform 63 below the support platform 63, and their two ends are respectively connected to the support platform 63 and the moving frame 62, and four vibrators 64 are provided, evenly distributed between the support platform 63, the moving frame 62 and the multiple limiting springs 65, the amplitude of the support platform 63 is 0.2-0.5mm, and the frequency is... The frequency is 100-150Hz. A protective sleeve 66 is provided on the outside of the limiting spring 65, which is axially vertical and fixedly connected to the moving frame 62 and the support platform 63 at both ends respectively. The moving component 61 includes a moving motor 613 fixed to the lower part of the moving frame 62, a moving seat 612 fixed at the four corners of the moving frame 62, and a moving roller 611 set on each moving seat 612. The moving roller 611 is an I-beam wheel with its axis parallel to the width direction of the support platform 63. The output end of the moving motor 613 is connected to one of the moving rollers 611 on the same axis.

[0029] like Figures 1-3 As shown, the production system of the present invention also includes a frame 1, a casting chamber 2, a vacuum device 4, a feeding device 5, and a moving device 6, all of which are mounted on the frame 1. Furthermore, the frame 1 also includes a base 11. In the present invention, the base 11 is a horizontal bottom surface. Two outer slide rails 111 are fixed on the base 11, which are arranged side by side along the width direction of the support platform 63 and extend along the length direction of the support platform 63. When the moving device 6 is located outside the casting chamber 2, the moving roller 611 rolls on the outer slide rails 111.

[0030] like Figure 6 , Figure 15 , Figure 23 As shown, the top surface of the base 11 has a slot 113 extending parallel to the width direction of the support platform 63, for the bottom end of the sealing unit 22 to be inserted from top to bottom for sealing. The casting chamber 2 and the outer slide rail 111 are respectively set on both sides of the slot 113. The bottom of the casting chamber 2 is open and fixed above the base 11. The end of the casting chamber 2 adjacent to the slot 113 is open, forming an inlet and outlet 201 for the moving device 6 to enter and exit the casting chamber 2. The casting chamber 2 is generally rectangular, and its length and width directions are parallel to the length and width directions of the support platform 63, respectively. The bottom of the end of the casting chamber 2 away from the slot 113 is fixedly connected to a drain pipe 26. The drain pipe 26 is connected to a drain valve 261, which is convenient for opening the drain valve 261 and draining through the drain pipe 26 after cleaning the inner cavity of the casting chamber 2.

[0031] Inside the pouring chamber 2, there is also a fixed inner slide rail 112 that corresponds one-to-one with the outer slide rail 111 and extends in the same direction as the outer slide rail 111. One end of the inner slide rail 112 is adjacent to the slot 113. The cross-sectional shape and size of the inner slide rail 112 are the same as those of the outer slide rail 111. This allows the moving device 6 to be guided in its movement direction by the inner slide rail 112 when it is located inside the pouring chamber 2, so that the moving device 6 can roll smoothly on the inner slide rail 112 and the outer slide rail 111.

[0032] Furthermore, downward-facing supplementary lights 23 are fixed to the upper part of the two side walls of the casting chamber 2. One of the supplementary lights 23 is equipped with a camera 24, and the other is equipped with a barometer 25. A controller 14 is also fixed on the base 11. The supplementary lights 23, camera 24, barometer 25, moving motor 613, vibrator 64, vacuum device 4, rotating unit 33 and feeding device 5 are all electrically connected to the controller 14. The supplementary lights 23 can easily increase the brightness inside the casting chamber 2. The camera 24 can be used to take pictures and transmit the captured image data to the controller 14. The barometer 25 can easily detect the air pressure inside the casting chamber 2 to ensure that vacuum mixing and vacuum casting can proceed smoothly.

[0033] like Figure 1 , Figure 6 , Figure 17 and Figure 18 As shown, the mixing chamber 3 of the present invention is generally rectangular. The inlet 301 and the outlet 302 are respectively disposed at the top and bottom of the mixing chamber 3. The outlet 302 is directly connected to the discharge port 202. The mixing chamber 3 is fixed above the casting chamber 2. The mixing unit 32 is disposed in the mixing chamber 3 and is arranged in parallel along the width direction parallel to the support platform 63. The mixing unit 32 includes a central shaft 321 extending axially parallel to the length direction of the support platform 63 and extending around its own center line, and a plurality of mixing shafts 322 distributed on the outer periphery of the central shaft 321. The two ends of the central shaft 321 penetrate through the inner walls of the two ends of the mixing chamber 3 and are connected to a rotary bearing 323. The outer ring of the rotary bearing 323 is fixed to the inner wall of the mixing chamber 3, and the inner ring is fixedly connected to the circumferential outer edge of the central shaft 321.

[0034] The rotating unit 33 includes two sealed shells 34 distributed opposite each other along the stirring chamber 3. The two ends of the central shaft 321 are fixedly connected to the coaxial center line of the synchronous pulleys 332. The two synchronous pulleys 332 located at the same end are connected by a synchronous belt 333. The rotating unit 33 also includes a rotary motor 331, which is fixed on one of the sealed shells 34 and its output end is driven by one of the synchronous pulleys 332.

[0035] With the above structure, the rotary motor 331 drives one of the synchronous pulleys 332 to rotate. Through the transmission of the synchronous belt 333, the two synchronous pulleys 332 rotate synchronously, which in turn drives the two central shafts 321 to rotate around their own axis in the mixing chamber 3, and drives the mixing shaft 322 to rotate, so as to evenly mix the concrete production materials.

[0036] like Figure 13 and Figure 14 As shown, a horizontal maintenance platform 12 is fixed above the mixing chamber 3. A maintenance fence 122 is fixed on the outer edge of the upper part of the maintenance platform 12. A maintenance step 121 is provided between the maintenance platform 12 and the base 11, so that workers can move to the maintenance platform 12 via the maintenance step 121 to perform corresponding maintenance operations. A through hole is provided on the maintenance platform 12 that is directly connected to the feed inlet 301.

[0037] A further improvement is that the partition unit 21 includes a horizontal partition 211 and a telescopic unit 212 that drives the partition 211 to move horizontally. The top surface of the partition 211 is sealed and fitted to the bottom of the discharge port 202. The casting chamber 2 is provided with a sliding groove 213 that slides and engages with the partition 211.

[0038] Specifically, such as Figure 15 , Figure 24 and Figure 25 As shown, the telescopic unit 212 is a telescopic cylinder, whose axis is parallel to the length direction of the support platform 63. The cylinder barrel of the telescopic cylinder is fixed to the inner top wall of the casting chamber 2. The piston rod is fixedly connected to the partition plate 211. The slide 213 is fixed to the inner top of the casting chamber 2, and its extension trajectory is a U-shape with the opening facing the telescopic cylinder. The top and bottom surfaces of the two sides of the partition plate 211 are respectively attached to the inner walls of the two sides of the slide 213 to fix the height position of the partition plate 211, so that the top surface of the partition plate 211 can be attached to the bottom of the discharge port 202. After the telescopic cylinder drives the partition plate 211 to move closer to the inlet and outlet 201, it can open the discharge port 202, so that the concrete slurry in the casting chamber 2 can enter the mold in the casting chamber 2 through the discharge port 202. The telescopic cylinder drives the partition plate 211 away from the inlet and outlet 201, so that the partition plate 211 covers the discharge port 202, which can effectively separate the inner cavity of the casting chamber 2 and the mixing chamber 3, making it convenient to add production materials into the mixing chamber 3 and mix them.

[0039] A further improvement is that the feed inlet 301 is located at the top of the mixing chamber 3, and the feeding device includes: The water supply assembly 51 includes a water tank 511 located above the feed inlet 301. The top and bottom of the water tank 511 are respectively fixedly connected to a water inlet pipe 512 and a water outlet pipe 513. The water inlet pipe 512 and the water outlet pipe 513 are respectively connected to a water inlet valve 5121 and a water outlet valve 5131. The bottom of the water outlet pipe 513 is provided with a water outlet 5132 located directly above the feed inlet 301. The material conveying assembly 52 includes a bucket elevator 521. The feed end and discharge end of the bucket elevator 521 are respectively located at the bottom and top and are respectively connected to an upwardly inclined feed pipe 522 and a downwardly inclined discharge pipe 523. A material guiding unit 524 is provided between the bottom end of the discharge pipe 523 and the feed port 301 for feeding the material conveyed by the bucket elevator 521 into the inner cavity of the mixing chamber 3 through the feed port 301.

[0040] The feeding device 5 mainly consists of a water conveying component 51 and a material conveying component 52. The water conveying component 51 is used to inject water for producing concrete into the mixing chamber 3, while the material conveying component 52 is used to input other materials used for producing concrete, excluding water, into the mixing chamber 3.

[0041] More specifically, such as Figure 12 , Figure 13 , Figure 16 and Figure 19 As shown, in the water supply assembly 51, the water tank 511 is fixed above the maintenance platform 12, and its top is fixedly connected to a water inlet pipe 512. The water inlet pipe 512 is connected to an external water source to the water tank 511. A liquid level sensor 5122 is also installed on the top of the water tank 511. The liquid level sensor 5122 is used to detect the liquid level in the water tank 511, and can monitor and control the amount of water used in concrete production by changing the liquid level. A horizontal water outlet pipe 513 is fixedly connected to the bottom of the container. The water outlet pipe 513 is located above the feed inlet 301. The water outlet pipe 513 is connected to a water outlet valve 5131. A water outlet 5132 is provided at the bottom of the water outlet pipe 513. The water outlet 5132 is located directly above the feed inlet 301. With this design, when the water outlet valve 5131 is opened, the water in the water tank 511 can be discharged from the water outlet 5132 through the water outlet pipe 513, so that the water flows into the mixing chamber 3.

[0042] like Figure 5 , Figures 7-10 , Figure 14 As shown, in the conveying assembly 52, the outer shell of the bucket elevator 521 is fixed above the base 11 and is fixed to one side of the maintenance platform 12. The bottom end away from the maintenance platform 12 is fixed with an inclined downward feed pipe 522. The top end of the feed pipe 522 is fixed with an upwardly flared feed hopper 525 to increase the feeding area and facilitate the introduction of production raw materials into the feed pipe 522 through the feed hopper 525. The top end of the bucket elevator 521 is fixedly connected to the upper part of the base 11 with an inclined downward discharge pipe 523, through which the material is discharged from the discharge pipe 523 by the bucket elevator 521.

[0043] A maintenance frame 15 is fixed above the maintenance platform 12. A rectangular top plate 151 is fixed to the top of the maintenance frame 15. The material guiding unit 524 includes a downwardly narrowed material guiding hopper 5241. A hopper cover 5242 is fixed to the top of the material guiding hopper 5241. The circumferential inner wall of the hopper cover 5242 is fixedly connected to the circumferential inner wall of the bottom end of the discharge pipe 523. The material guiding hopper 5241 is located directly above the feed inlet 301 and a vibrator 5243 is fixed to its outer wall.

[0044] With the above design, the solid granular material for producing concrete can be conveyed into the guide hopper 5241 through the discharge pipe 523 by the bucket elevator 521. The material is conveniently introduced into the mixing chamber 3 through the feed inlet 301 by the guide hopper 5241. The vibrator 5243 is used to strike and vibrate the side wall of the guide hopper 5241 to knock off the granular material attached to the inner wall of the guide hopper 5241, thereby reducing the residual material on the guide hopper 5241.

[0045] A maintenance opening is provided on the side of the maintenance frame 15 away from the bucket elevator 521. Two guide rails 123 are fixed on the upper and lower sides of the maintenance opening, extending along the length of the support platform 63 and distributed opposite each other in the vertical direction. Two sliding doors 153 slide between the two guide rails 123. The two sliding doors 153 slide between the shielding position and the maintenance position. Under the shielding position, there is a gap between the two sliding doors 153 that connects to the maintenance opening, which makes it convenient for workers to enter the inside of the maintenance frame 15 to inspect the device through the gap between the two sliding doors 153 and the maintenance opening. Under the shielding position, the two sliding doors 153 cooperate with each other to cover the maintenance opening.

[0046] To facilitate the addition of production materials into the feed hopper 525, a horizontal feeding platform 13 is fixed above the base 11. The top of the feed pipe 522 is fixedly inserted through the feeding platform 13. The feeding platform 13 and the base 11 are fixed with a feeding step 131, which makes it convenient for workers to transport materials onto the feeding platform 13. A U-shaped feeding fence 132 with the U-shaped opening facing the feeding step 131 is fixed at the upper edge of the feeding platform 13 to ensure the safety of workers during feeding operations.

[0047] A further improvement is that the vacuum integrated production system of the present invention also includes a dust removal device 8, which is used to remove the dust generated when production raw materials and materials are added to the feed hopper 525 and enter the guide hopper 5241, thereby reducing environmental pollution.

[0048] Specifically, the dust removal device 8 includes an air pump 81, an outer filter canister 82, an inner filter canister 83, a first dust suction hood 84, a dust removal pipe 85, a suction pipe 86, a second dust suction hood 87, and a dust suction shell 88. The air pump 81 and the outer filter canister 82 are both located above the base 11. Figure 10As shown, the dust collection shell 88 is a hollow U-shape with the U-shaped opening facing the feeding step 131. The hollow dust collection shell 88 is fixedly connected to the bucket elevator 521 via the dust collection seat 881. The second dust collection hood 87 is fixed to the inner wall of the dust collection shell 88 and communicates with the inner cavity of the dust collection shell 88. The opening of the second dust collection hood 87 is adjacent to the upper outer side of the opening of the feed hopper 525. One end of the dust collection shell 88 is connected to the dust removal pipe 85 via the dust collection pipe 86. Figure 4 , Figure 7 and Figure 8 As shown, the end of the dust removal pipe 85 away from the dust collection shell 88 is connected to the top of the outer filter barrel 82 via the dust collection pipe 86. The dust collection pipe 86 is connected to a second dust removal valve 852, which is used to control the opening and closing of the dust removal pipe 85 and the dust collection shell 88. The inner wall of the outer filter barrel 82 is provided with an inner filter barrel 83. The inner filter barrel 83 and the outer filter barrel 82 enclose an air intake chamber and a purification chamber. The air intake chamber is connected to the dust collection pipe 86, the purification chamber is connected to the input end of the air pump 81, and the output end of the air pump 81 is connected to the outside.

[0049] With the above structure, while adding material to the feed hopper 525, the second dust removal valve 852 is opened and the air pump 81 is started, so that the inner barrel of the filter outer barrel 82 forms a negative pressure. Under the action of negative pressure, the dust generated at the opening of the feed hopper 525 enters the filter outer barrel 82 in sequence through the second dust suction hood 87, dust suction shell 88, dust suction pipe 86 and dust removal pipe 85. The dust particles are intercepted by the filter inner barrel 83, while the air is discharged through the air pump 81.

[0050] like Figures 7-9 As shown, a dust suction port 152 is provided on the side of the maintenance frame 15 near the bucket elevator 521. The dust suction port 152 is fixedly covered by a first dust suction hood 84. The end of the first dust suction hood 84 away from the dust suction port 152 is fixedly connected to the dust removal pipe 85. The dust removal pipe 85 is connected to a first dust removal valve 851, which is used to control the opening and closing between the filter outer barrel 82 and the first dust suction hood 84.

[0051] With the above structure, when materials are added to the feed hopper 5241 through the bucket elevator 521, the first dust removal valve 851 is opened. Through the negative pressure formed in the outer filter barrel 82, the dust in the maintenance frame 15 enters the dust removal pipe 85 through the first dust suction hood 84, and then enters the outer filter barrel 82 in sequence. The dust particles are intercepted by the inner filter barrel 83, and the air is discharged to the outside.

[0052] More specifically, the outer filter barrel 82 includes an upper shell 821 and a lower shell 822 arranged vertically opposite each other. The outer circumferential edge of the bottom of the upper shell 821 is provided with an upward flange 8211, and the outer circumferential edge of the top of the lower shell 822 is provided with a downward flange 8221. The upward flange 8211 and the downward flange 8221 are coaxial and have the same dimensions. The upward flange 8211 and the downward flange 8221 are fitted together and fixedly connected by bolts 823 and nuts 824 arranged in a circular array and threaded together. The lower shell 822 houses the inner filter barrel 83. The outer circumferential edge of the inner filter barrel 83... The filter inner barrel 83 is densely covered with filter holes. The bottom of the filter inner barrel 83 is attached to the inner bottom wall of the lower housing 822. The top circumferential outer edge of the filter inner barrel 83 is provided with an outward flange 831. The circumferential outer edge of the outward flange 831 is attached to the circumferential inner wall of the lower housing 822. The lower housing 822 is connected to the input end of the air pump 81. In this way, the circumferential inner wall of the lower housing 822, the circumferential outer edge of the filter outer barrel 82 and the bottom surface of the outward flange 831 form a purification chamber. The upper part of the circumferential inner wall of the lower housing 822, the upper housing 821, the inner wall of the filter inner barrel 83 and the top surface of the outward flange 831 form an air intake chamber.

[0053] A further improvement is that the feed sealing unit 31 includes a feed cover 311, a translation unit 312 that drives the feed cover 311 to move in the horizontal direction, and a flexible feed sealing ring 313 disposed between the feed cover 311 and the feed port 301.

[0054] By setting an elastic feed sealing ring 313, the sealing connection between the feed cover 311 and the feed inlet 301 at the top of the mixing chamber 3 is ensured, preventing air leakage and ensuring a vacuum negative pressure environment inside the mixing chamber 3 during mixing, so as to promote the compactness of the final product and prevent residual gas in the product.

[0055] A further improvement is that the inlet / outlet sealing unit 22 includes an inlet / outlet door 221, a lifting unit 222 that drives the inlet / outlet door 221 to move in the vertical direction, and an elastic inlet / outlet sealing ring 223 disposed between the inlet / outlet door 221 and the inlet / outlet 201.

[0056] By setting up an elastic inlet and outlet sealing ring 223, the sealing connection between the inlet and outlet gate 221 and the side inlet and outlet 201 of the pouring chamber 2 is ensured, preventing air leakage and ensuring a vacuum negative pressure environment inside the pouring chamber 2 during pouring, so as to promote the density of the final product and prevent residual gas in the product.

[0057] A further improvement is that both the feed sealing ring 313 and the inlet / outlet sealing ring 223 are hollow and closed-loop sealing rings. The feed sealing ring 313 is fixedly connected to the first air inlet pipe 3131 and the first air outlet pipe 3132. The first air inlet pipe 3131 and the first air outlet pipe 3132 are respectively provided with a first air inlet valve 3133 and a first air outlet valve 3134. The inlet / outlet sealing ring 223 is fixedly connected to the second air inlet pipe 2231 and the second air outlet pipe 2232. The second air inlet pipe 2231 and the second air outlet pipe 2232 are respectively provided with a second air inlet valve 2233 and a second air outlet valve 2234. The vacuum integrated production system also includes a gas conveying device 7, which is used to input high-pressure gas into the first air inlet pipe 3131 and the second air inlet pipe 2231.

[0058] By adopting hollow and closed-loop sealing rings 313 and 223, it is easier to control their shape. Specifically, the gas supply device 7 supplies gas to the feed sealing ring 313 and the inlet / outlet sealing ring 223 through the first air inlet pipe 3131 and the second air inlet pipe 2231, respectively. This increases the gas volume and pressure inside the feed sealing ring 313 and the inlet / outlet sealing ring 223, causing them to expand. This strengthens the sealing connection between the feed cover 311 and the mixing chamber 3, as well as the sealing connection between the inlet / outlet door 221 and the pouring chamber 2, preventing leakage and ensuring the smooth pouring and mixing process. The vacuum degree of the mixing environment; after mixing and pouring are completed, by opening the first vent valve 3134, the gas in the feed sealing ring 313 is discharged to the outside through the first vent pipe 3132. The internal air pressure of the feed sealing ring 313 decreases, thereby reducing its size and preventing wear of the feed sealing ring 313 when the feed cover 311 moves; similarly, by opening the second vent valve 2234, the gas in the inlet and outlet sealing ring 223 is discharged to the outside through the second vent pipe 2232. The internal air pressure of the inlet and outlet sealing ring 223 decreases, thereby reducing its size and preventing wear of the inlet and outlet sealing ring 223 when the inlet and outlet door 221 moves.

[0059] A further improvement is that the air delivery device 7 includes an air compressor 71, a buffer tank 72 and a dehumidifier 73 connected in sequence, and a filter 74 is provided between the buffer tank 72 and the air compressor 71 and / or between the air outlet side of the dehumidifier 73.

[0060] Specifically, such as Figure 13As shown, a filter 74 is installed between the buffer tank 72 and the air compressor 71. Two filters 74 are arranged sequentially on the outlet side of the dehumidifier 73. The filtration accuracy of the filters 74 increases sequentially along the airflow direction. The end filter 74 is fixedly connected to an air delivery pipe 75. The end of the air delivery pipe 75, away from the filter 74, is the outlet end of the profile air delivery device 7, used to output clean and unpolluted compressed air. In the air delivery device 7, both the air compressor 71 and the buffer tank 72 are fixed on the base 11 and located on the back of the casting chamber 2 (i.e., the end of the casting chamber 2 away from the inlet and outlet 201). Air is drawn through the air compressor 71... External air is introduced and compressed to form compressed air, which is then temporarily stored in a buffer tank 72. After that, oil, moisture, and dust particles in the compressed air are filtered out by a dehumidifier 73 and three filters 74. The compressed air is then fed into the feed seal ring 313 through the first air inlet pipe 3131 and into the inlet and outlet seal ring 223 through the second air inlet pipe 2231. This ensures that the high-pressure gas inside the feed seal ring 313 and the inlet and outlet seal ring 223 is clean and uncontaminated, avoiding corrosion and wear damage to the feed seal ring 313 and the inlet and outlet seal ring 223, and extending the service life of the feed seal ring 313 and the inlet and outlet seal ring 223.

[0061] like Figures 23-25 As shown, two vertical slide rails 16 extending upward in the vertical direction are fixed at both ends of the slot 113. The top ends of the two vertical slide rails 16 are fixedly connected by a horizontal beam 17. The vertical slide rail 16 includes a guide groove 161 fixedly connected to the base 11 and extending in the vertical direction, and a vertical frame 162 extending in the vertical direction between the guide groove 161 and the beam 17. The cross-section of the guide groove 161 of the two vertical slide rails 16 is U-shaped, and the groove openings are set facing each other.

[0062] In the inlet / outlet sealing unit 22, the inlet / outlet door 221 is vertically arranged, with two sides positioned between two vertical slide rails 16. There are two lifting units 222, each corresponding to one of the two vertical frames 162. Each lifting unit 222 includes a lifting cylinder, the cylinder of which is fixed inside the vertical frame 162 and is axially vertical. The bottom end of the piston rod is fixedly connected to the top of both sides of the inlet / outlet door 221. The two sides of the inlet / outlet door 221 also have guide wheels 2212 that are axially horizontal and rotate around their own axis. The wheel surface of the guide wheel 2212 is in contact with the three inner side walls of the guide groove 161. In this way, when the lifting unit 222 is running, under the guiding action of the rolling contact between the guide wheel 2212 and the inner wall of the guide groove 161, the inlet / outlet door 221 moves stably up and down in the vertical direction.

[0063] An observation window 2211 is also provided on the entrance / exit 221 to facilitate workers to observe the working conditions inside the pouring chamber 2 through the observation window 2211; the entrance / exit sealing ring 223 is fixed to one end of the pouring chamber 2 near the slot 113 and surrounds the entrance / exit 201, with its bottom end located inside the slot 113; the second air inlet pipe 2231 has three ends, one end of which is fixedly connected to the air outlet of the air supply device 7, and the other two ends are respectively sealed and fixedly penetrated into the pouring chamber 2 along the width direction parallel to the support platform 63 and are fixedly connected to the entrance / exit sealing ring 223; the second air outlet pipe 2232 is fixedly connected to the second air inlet pipe 2231; the second air inlet valve 2233 is set on the second air inlet pipe 2231 between the second air outlet pipe 2232 and the air outlet of the air supply device 7; and the second air outlet valve 2234 is set on the second air inlet pipe 2231.

[0064] With the above structure, by controlling the second air inlet valve 2233, the connection between the gas supply device 7 and the inlet / outlet sealing ring 223 can be easily controlled. After the inlet / outlet gate 221 moves downward to cover the inlet / outlet 201, the second air inlet valve 2233 is opened to inflate the inlet / outlet sealing ring 223. After the inlet / outlet sealing ring 223 expands, it clamps between the casting chamber 2 and the inlet / outlet gate 221, and then the second air inlet valve 2233 is closed, ensuring a sealed connection between the casting chamber 2 and the inlet / outlet gate 221. By controlling the second air outlet valve 2234, the connection between the inlet / outlet sealing ring 223 and the outside can be easily controlled. Before the inlet / outlet gate 221 moves upward, the second air outlet valve 2234 is opened, allowing the compressed gas in the inlet / outlet sealing ring 223 to be discharged to the outside through the second air outlet pipe 2232. This results in the inlet / outlet sealing ring 223 shrinking in size and creating a connection between it and the inlet / outlet gate 221. Figure 15 The aforementioned gap facilitates the upward movement of the door 221 and prevents wear on the sealing ring 223.

[0065] like Figure 14 , Figures 20-22 As shown, in the feeding sealing unit 31, the feeding cover 311 is a downward-opening dome-shaped structure, with its length and width dimensions being larger than those of the feeding port 301, respectively. The feeding sealing ring 313 is fixed to the bottom edge of the feeding cover 311. The translation unit 312 drives the feeding cover 311 to move back and forth between the sealing station and the feeding station along a direction parallel to the length of the support platform 63. Figure 5 As shown, the feed cover 311 is in a sealed position. The feed sealing ring 313 is inflated, causing it to expand and clamp between the feed cover 311 and the edge of the through hole in the maintenance platform 12. The feed inlet 301 of the mixing chamber 3 is fixedly connected to the bottom of the through hole in the maintenance platform 12, thus ensuring a sealed connection between the feed cover 311 and the mixing chamber 3, which helps to create a vacuum environment inside the mixing chamber 3. Figure 19As shown, the feed cover 311 is located at the feed station, above and to the side of the feed inlet 301 and separated from the feed inlet 301, so as to facilitate the addition of concrete production materials into the mixing chamber 3 through the feed inlet 301.

[0066] A surrounding frame 314 is fixed to the outer edge of the feed cover 311. The surrounding frame 314 and the feed cover 311 enclose a cavity that communicates with the feed sealing ring 313. The two ends of the surrounding frame 314 are respectively fixedly connected to a first air inlet pipe 3131 and a first air outlet pipe 3132. The first air inlet pipe 3131 and the first air outlet pipe 3132 are both connected to the inner cavity of the surrounding cavity and the feed sealing ring 313. The first air inlet pipe 3131 is connected to the air outlet end of the air conveying device 7, and the first air outlet pipe 3132 is connected to the outside. The first air inlet pipe 3131 and the first air outlet pipe 3132 are respectively connected to a first air inlet valve 3133 and a first air outlet valve 3134.

[0067] In the initial state, the feed sealing ring 313 is not filled with compressed air, which reduces the size of the feed sealing ring 313 and creates a gap between it and the top of the through hole of the maintenance platform 12. This facilitates the movement of the feed sealing ring 313 by the translation unit 312 and prevents wear. After the translation unit 312 moves the feed cover 311 to the sealing position, the first air inlet valve 3133 is opened. The air supply device 7 delivers high-pressure gas to the feed sealing ring 313 through the first air inlet pipe 3131 and the surrounding cavity. This causes the feed sealing ring 313 to expand and seal against the edge of the through hole of the maintenance platform 12. Then, the first air inlet valve 3133 is closed, ensuring a sealed connection between the mixing chamber 3 and the feed sealing ring 313 and ensuring that the inner cavity of the mixing chamber 3 is isolated from the outside.

[0068] After vacuum mixing and vacuum casting are completed, the first vent valve 3134 is opened, allowing the high-pressure gas inside the feed sealing ring 313 to be discharged to the outside through the first vent pipe 3132. After the feed sealing ring 313 shrinks in size, it detaches from the maintenance platform 12 and has a gap with the top surface of the maintenance platform 12, which facilitates the translation unit 312 to move the feed cover 311 while avoiding wear on the feed sealing ring 313.

[0069] The top surface of the maintenance platform 12 is also fixed with two upper slide rails 124 that are arranged side by side along the width direction of the support platform 63 and extend along the length direction of the support platform 63. The feed cover 311 moves on the two upper slide rails 124. Specifically, the translation unit 312 includes a drive unit 3121, translation rollers 3122, roller frames 3123 and translation bearings 3124. Four translation rollers 3122, roller frames 3123 and translation bearings 3124 are provided and are arranged one-to-one at the four corners of the feed cover 311. The drive unit 3121 is used to drive the two translation rollers 3122 that are distributed along the width direction of the support platform 63 to rotate around their own axis, so that the four translation rollers 3122 roll on the corresponding two upper slide rails 124.

[0070] Specifically, roller frames 3123 are fixedly connected to the four corners of the feed cover 311, and the outer and inner rings of the translation bearing 3124 are connected to the roller frame 3123 and the translation roller 3122, respectively. Drive unit 3121 includes drive motor 31211, gearbox 31212, connecting seat 31213, concentric tube 31214, concentric shaft 31215, housing cover 31216, and housing cap 31217. The housing of gearbox 31212 is fixedly connected to feed cover 311 via connecting seat 31213. The housing of drive motor 31211 is fixedly connected to gearbox 31212, and its output end is fixedly connected to the input end of gearbox 31212 along the same axis. Gearbox 31212 has two output ends with the same rotational speed and a coaxial axis distribution. Two concentric shafts 31215 are fixedly connected to the two output ends along the same axis. The concentric tube 31214 is sleeved on the concentric shaft 31215, and the two ends of the concentric tube 31214 are respectively connected to gearbox 31212. 2. The outer casing 31216 is fixedly connected to the outer casing 31216, and the outer casing cover 31217 is fixedly connected to the outer casing 31216. A transmission unit is provided between the outer casing 31216 and the outer casing cover 31217. The end of the concentric shaft 31215 away from the gearbox 31212 is connected to the translation roller 3122 through the transmission unit. Specifically, the transmission unit includes a chain 3126 and two sprockets 3125 located at both ends inside the chain 3126 and connected to it through the chain 3126. The two sprockets 3125 are fixedly connected to the concentric shaft 31215 and the translation roller 3122 along the same axis. In this way, the translation unit 312 can drive one pair of translation rollers 3122 to roll around their own axis on the upper slide rail 124, thereby driving the feed cover 311 to move back and forth.

[0071] Furthermore, such as Figure 28 As shown, the vacuum pump group 41 of the vacuum device 4 of the present invention is fixed on the base 11 and located at the end of the casting chamber 2 away from the inlet and outlet 201. The vacuum pump group 41 is preferably a Roots vacuum pump. Its pumping end is sequentially connected to a first vacuum tube 44 and a second vacuum tube 45. The second vacuum tube 45 is a U-shaped tube, with its two ends fixedly connected to the casting chamber 2 and the mixing chamber 3 respectively, and respectively connected to a first vacuum valve 42 and a second vacuum valve 43. The middle part of the first vacuum tube 44 and the second vacuum tube 45 are fixedly connected. By opening and closing the first vacuum valve 42 and the second vacuum valve 43 in coordination with the vacuum pump group 41, it is convenient to control the mixing chamber 3 and the casting chamber 2 to perform vacuuming. The first vacuum tube 44 is also equipped with a silencer 46 to reduce noise pollution generated during vacuuming.

[0072] To improve production efficiency, in this invention, there are two of each of the casting chamber 2, mixing chamber 3, vacuum device 4, feeding device 5 and moving device 6, which are symmetrically distributed along the width direction parallel to the support platform 63 and are arranged in a one-to-one correspondence.

[0073] Based on the vacuum integrated production system for high-performance concrete of the present invention, the present invention also provides a vacuum integrated production method for high-performance concrete, comprising the following steps: S10. Preparation: Send the mold to be poured into the pouring chamber 2, so that the opening of the mold is directly below the material discharge port 202 at the top of the pouring chamber 2, and then close the pouring chamber 2; at the same time, separate the inner cavity of the pouring chamber 2 and the inner cavity of the mixing chamber 3, add the raw materials for producing concrete into the mixing chamber 3, and close the mixing chamber 3. S20. Vacuum mixing: Start the vacuum pump unit 41 to evacuate the inner cavity of the pouring chamber 2 and the inner cavity of the mixing chamber 3, so that the air pressure in the inner cavity of the pouring chamber 2 and the inner cavity of the mixing chamber 3 is maintained within the preset negative pressure range. Under this state, the raw materials in the mixing chamber 3 are mixed to form a uniformly mixed concrete slurry. S30, Vacuum casting: Maintain the negative pressure environment inside the casting chamber 2 and the mixing chamber 3, and connect the two. Then, pour the concrete slurry obtained in S20 into the mold and start the vibrator 64 to vibrate the mold to promote the removal of air from the concrete slurry. S40. Material Removal: Turn off the vibrator 64 and vacuum pump group 41, open the pouring chamber 2, remove the mold, and after the concrete slurry in the mold has solidified, separate the product from the mold.

[0074] Compared with the prior art, the production method of the present invention is carried out in a vacuum environment during the production process, which can effectively block the production path of air bubbles in the concrete slurry. Furthermore, the mold is vibrated in a vacuum environment by a vibrator 64, which causes the mold to generate high-frequency micro-amplitude vibration (preferably the vibration frequency is 150Hz and the vibration amplitude is within 0.3mm), thus avoiding slurry stratification.

[0075] After the above treatment, the porosity of concrete components can be controlled to within 0.5%, which is significantly lower than the 2% of traditional processes. The compressive strength of the product is increased by 15% to 20%, reaching 180-200 MPa. In addition, the surface smoothness of the product is improved, enhancing the decorative effect. No secondary treatment is required, and the surface smoothness Ra is typically ≤1.6 μm, thus reducing the workload of workers. Ultimately, while ensuring product quality and extending service life, it also helps to improve the overall production efficiency of the product and achieve zero-bubble molding of concrete, making it suitable for high-precision precast building components.

[0076] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A vacuum integrated production system for high-performance concrete, characterized in that, include: A mixing and casting device includes a casting chamber and a mixing chamber fixed above the casting chamber. The top of the casting chamber and the bottom of the mixing chamber are respectively provided with a material discharge port and a material outlet that are directly opposite and communicate with each other. One of the casting chamber and the mixing chamber is connected by a partition unit for separating the inner cavities of the two. The mixing chamber is provided with a material inlet and is connected with a material inlet sealing unit for sealing and covering the material inlet. The mixing chamber contains a mixing unit and is connected with a rotating unit for driving the mixing unit to rotate. The casting chamber is provided with an inlet and an outlet and is connected with an inlet and outlet sealing unit for sealing and covering the inlet and outlet. A vacuum device includes a vacuum pump unit, which has two input ends. The two input ends of the vacuum pump unit are respectively connected to the casting chamber and the mixing chamber and are respectively connected to a first vacuum valve and a second vacuum valve. A feeding device is used to add concrete production raw materials into the mixing chamber through the feed inlet.

2. The vacuum integrated production system for high-performance concrete according to claim 1, characterized in that: It also includes a mobile device, the mobile device comprising: A movable component and a movable frame, wherein the movable component drives the movable frame to reciprocate between the pouring station and the pick-and-place station; A support platform, horizontally positioned above the movable frame, is used to place the casting mold; The vibratory machine has its outer casing fixed on a movable frame, and its output end connected to the bottom surface of the support platform. At the pouring station, the projection of the material outlet on the horizontal plane is located within the projection of the pouring mold on the horizontal plane; at the pick-and-place station, the moving device is located outside the pouring room.

3. The vacuum integrated production system for high-performance concrete according to claim 2, characterized in that: The moving device also includes a limiting spring disposed between the moving frame and the support platform, and the limiting spring and the vibrator are evenly distributed between the support platform and the moving frame.

4. The vacuum integrated production system for high-performance concrete according to claim 1, characterized in that: The feed inlet is located at the top of the mixing chamber, and the feeding device includes: The water supply assembly includes a water tank located above the feed inlet. The top and bottom of the water tank are respectively fixedly connected to a water inlet pipe and a water outlet pipe. The water inlet pipe and the water outlet pipe are respectively connected to a water inlet valve and a water outlet valve. The bottom of the water outlet pipe is provided with a water outlet located directly above the feed inlet. The material conveying assembly includes a bucket elevator, wherein the feed end and discharge end of the bucket elevator are respectively located at the bottom and top and are respectively connected to an upwardly inclined feed pipe and a downwardly inclined discharge pipe. A material guiding unit is provided between the bottom end of the discharge pipe and the feed inlet for feeding the material conveyed by the bucket elevator into the inner cavity of the mixing chamber through the feed inlet.

5. The vacuum integrated production system for high-performance concrete according to claim 4, characterized in that: The feed sealing unit includes a feed cover, a translation unit that drives the feed cover to move horizontally, and an elastic feed sealing ring disposed between the feed cover and the feed inlet.

6. The vacuum integrated production system for high-performance concrete according to claim 5, characterized in that: The inlet / outlet sealing unit includes an inlet / outlet door, a lifting unit that drives the inlet / outlet door to move vertically, and an elastic inlet / outlet sealing ring disposed between the inlet / outlet door and the inlet / outlet.

7. The vacuum integrated production system for high-performance concrete according to claim 6, characterized in that: Both the feed sealing ring and the inlet / outlet sealing ring are hollow and closed-loop sealing rings. The feed sealing ring is fixedly connected to a first air inlet pipe and a first air outlet pipe. The first air inlet pipe and the first air outlet pipe are respectively provided with a first air inlet valve and a first air outlet valve. The inlet / outlet sealing ring is fixedly connected to a second air inlet pipe and a second air outlet pipe. The second air inlet pipe and the second air outlet pipe are respectively provided with a second air inlet valve and a second air outlet valve. The vacuum integrated production system also includes a gas conveying device, which is used to input high-pressure gas into the first air inlet pipe and the second air inlet pipe.

8. The vacuum integrated production system for high-performance concrete according to claim 7, characterized in that: The gas delivery device includes an air compressor, a buffer tank, and a dehumidifier connected in sequence, and a filter is provided between the buffer tank and the air compressor and / or between the air outlet side of the dehumidifier.

9. The vacuum integrated production system for high-performance concrete according to any one of claims 1-8, characterized in that: The partition unit includes a horizontal partition and a telescopic unit that drives the partition to move horizontally. The top surface of the partition is sealed to the bottom of the material discharge port. The casting chamber is provided with a sliding groove that slides with the partition.

10. A vacuum integrated production system for high-performance concrete, characterized in that, Includes the following steps: S10. Preparation: Send the mold to be poured into the pouring chamber, so that the opening of the mold is directly below the material discharge port at the top of the pouring chamber, and then close the pouring chamber; at the same time, separate the inner cavity of the pouring chamber from the inner cavity of the mixing chamber, add the raw materials for producing concrete into the mixing chamber, and then close the mixing chamber. S20. Vacuum mixing: Start the vacuum pump unit to evacuate the pouring chamber and the mixing chamber, so that the air pressure in the pouring chamber and the mixing chamber is maintained within the preset negative pressure range. Under this condition, the raw materials in the mixing chamber are mixed to form a uniformly mixed concrete slurry. S30, Vacuum casting: Maintain a negative pressure environment in the casting chamber and the mixing chamber, and connect the two. Then, pour the concrete slurry obtained in S20 into the mold and start the vibrator to vibrate the mold to remove the air in the concrete slurry. S40. Material Removal: Turn off the vibrator and vacuum pump unit, open the pouring chamber, remove the mold, and after the concrete slurry in the mold has solidified, separate the product from the mold.

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