Forming and curing integrated device for calcium fluoride sludge building materials

Abstract

The utility model discloses a calcium fluoride sludge building material forming and maintaining integrated device which comprises a feeding mechanism and a forming mechanism, a maintaining mechanism is arranged on the forming mechanism, the feeding mechanism comprises a feeding hopper, an equipment frame, a feeding frame and a second hydraulic telescopic rod, and the feeding hopper is fixedly installed on the equipment frame; the feeding frame is located at the lower end of the feeding hopper and slidably connected with the equipment frame, the second hydraulic telescopic rod is fixedly installed on the feeding hopper and drives the feeding frame, the forming mechanism comprises an upper pressing die, a lower pressing die, a third hydraulic telescopic rod and a fourth hydraulic telescopic rod, and the upper pressing die is slidably connected with the equipment frame through the third hydraulic telescopic rod; the lower pressing die is in sliding connection with the equipment frame through a fourth hydraulic telescopic rod. The device has the advantages of high integration degree, accurate automatic control and good curing effect, and solves the problems of low production efficiency, high blank breakage rate and poor product crack resistance caused by separation of molding and curing in the traditional process.

Description

An integrated device for molding and curing calcium fluoride sludge building materials Technical Field

[0001] This utility model relates to the field of brick forming machine technology, specifically to an integrated device for forming and curing calcium fluoride sludge building materials. Background Technology

[0002] With the continuous development of industrial production, the large amount of calcium fluoride sludge generated during the treatment of fluoride-containing wastewater has become one of the industrial solid wastes that urgently needs resource utilization. Because it contains a certain amount of active components, such as amorphous silica and alumina, it can participate in pozzolanic reactions under appropriate conditions. Therefore, in recent years, it has been attempted to be used in the preparation of building materials, such as non-fired bricks and cement admixtures. However, calcium fluoride sludge has characteristics such as high water content, high viscosity, and poor molding performance. Direct use in building material production results in problems such as low green body strength, easy cracking, and low curing efficiency.

[0003] Currently, traditional calcium fluoride sludge building material production processes mostly employ a "step-by-step" operation mode: first, the sludge raw material is pressed into a green body using a pressing and molding equipment, and then the wet green body is transferred manually or mechanically to a separately set curing kiln for later curing. This step-by-step process is not only cumbersome and has a low degree of automation, but also easily causes damage and deformation of the soft green body during the transfer process, affecting the yield and product quality. In addition, traditional steam curing methods usually rely solely on high-temperature steam to increase the hardening rate of the material, lacking effective means to repair microstructural defects (such as microcracks), resulting in the final product's crack resistance and durability failing to meet the requirements of high-performance building materials. Therefore, an integrated molding and curing device for calcium fluoride sludge building materials is needed to solve the above problems. Summary of the Invention

[0004] The purpose of this utility model is to provide an integrated device for molding and curing calcium fluoride sludge building materials, which has the advantages of high integration, precise automation control and good curing effect. It solves the problems of low production efficiency, high green body breakage rate and poor product crack resistance caused by the separation of molding and curing in traditional processes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated device for molding and curing calcium fluoride sludge building materials, comprising a feeding mechanism and a molding mechanism, wherein a curing mechanism is provided on the molding mechanism;

[0006] The feeding mechanism includes a feeding hopper, an equipment frame, a feeding frame, and a second hydraulic telescopic rod. The feeding hopper is fixedly installed on the equipment frame, and the feeding frame is located at the lower end of the feeding hopper and slidably connected to the equipment frame. The second hydraulic telescopic rod is fixedly installed on the feeding hopper to drive the feeding frame. The forming mechanism includes an upper die, a lower die, a third hydraulic telescopic rod, and a fourth hydraulic telescopic rod. The upper die is slidably connected to the equipment frame via the third hydraulic telescopic rod, and the lower die is slidably connected to the equipment frame via the fourth hydraulic telescopic rod. The curing mechanism includes a regulator bottle, a sealing cover, a steam generator, a slide table, and a fifth hydraulic telescopic rod. The steam generator is connected to the top of the sealing cover via a steam pipe. The slide table is slidably connected to the equipment frame via the fifth hydraulic telescopic rod. The fifth hydraulic telescopic rod is movably installed at the bottom of the lower die, and the regulator bottle is installed at the top of the sealing cover.

[0007] In a preferred embodiment of the integrated molding and curing device for calcium fluoride sludge building materials according to this utility model, the bottom of the feeding hopper is provided with a rotatably connected discharge plate, and a first hydraulic telescopic rod is provided between the discharge plate and the equipment frame for rotatable connection, and the discharge plate is driven by the first hydraulic telescopic rod.

[0008] In a preferred embodiment of the integrated molding and curing device for calcium fluoride sludge building materials according to this utility model, the upper end face of the sealing cover is provided with a steam inlet that communicates with the steam pipe, the middle diameter of the steam inlet is smaller than the diameters of the upper and lower ends, and the side end face of the steam inlet is provided with a regulator inlet that communicates with the regulator bottle.

[0009] In a preferred embodiment of the integrated molding and curing device for calcium fluoride sludge building materials according to this utility model, the upper end face of the regulator inlet is provided with an internal thread interface, and the bottle mouth of the regulator bottle is provided with an external thread that mates with the internal thread interface.

[0010] In a preferred embodiment of the integrated molding and curing device for calcium fluoride sludge building materials according to this utility model, the top of the regulator bottle is provided with an air inlet, and a spring and a leak-proof piston are slidably connected inside the air inlet. The leak-proof piston is elastically slidably connected to the regulator bottle through the spring.

[0011] As a preferred embodiment of the integrated molding and curing device for calcium fluoride sludge building materials according to this utility model, the upper end surface of the slide table is provided with a vertical plate that cooperates with the sealing cover.

[0012] As a preferred embodiment of the integrated molding and curing device for calcium fluoride sludge building materials according to this utility model, the bottom of the sliding table is provided with pulleys.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model integrates three functional modules—feeding, molding, and curing—into a single equipment frame. Material is precisely fed to the lower die via the feeding hopper and feeding frame. The upper and lower dies, driven by hydraulic rods, complete high-pressure molding. After molding, the slide at the bottom of the lower die, propelled by hydraulic rods, carries the molded wet blank along with the lower die to below the sealing cover. A fifth hydraulic telescopic rod drives the slide forward into the sealing cover, tightly closing the sealing cover, slide, and vertical plate to form a robust, sealed curing chamber. This structural design completely eliminates the need for manual or mechanical transfer of the wet blank to an independent curing kiln after molding, a process common in traditional manufacturing. Its advantages include significantly shortening the production cycle, substantially increasing the output per unit time, and, more importantly, avoiding the risks of bumps, deformation, or even breakage of the wet, soft blank during transport. This ensures the integrity and geometric accuracy of the blank, solving the problems of low efficiency and high breakage rate in traditional step-by-step processing methods, and laying the foundation for large-scale continuous production of calcium fluoride sludge building materials.

[0015] 2. This invention utilizes a steam generator to produce high-temperature, high-pressure steam, which is then injected at high speed into a sealed cavity through a specially designed steam inlet. Utilizing the Venturi effect to create negative pressure at the throat, the chemical regulator from the regulator bottle at the top of the sealed cover is automatically and continuously drawn into the steam stream in a measured amount, achieving uniform atomization and mixing. The high-temperature steam mixed with the regulator rapidly fills the entire sealed cavity, enveloping the green body. On one hand, the high-temperature, high-pressure environment significantly accelerates the dissolution of active components in the calcium fluoride sludge inside the green body and the rate of volcanic ash reaction, promoting the rapid generation of hydration products and filling pores, thus greatly improving the density and early strength of the green body. On the other hand, the atomized regulator penetrates with the steam into the finest pores and potential microcracks in the green body. This structural operation solves the problem of conventional steam curing's difficulty in simultaneously achieving rapid heating and repairing micro-defects, especially addressing the issue of microcracks easily generated in special raw materials like calcium fluoride sludge, significantly improving the crack resistance, durability, and overall mechanical strength of the final building material product. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of this utility model from a first-view perspective;

[0017] Figure 2 is a schematic diagram of the overall structure of this utility model from a second perspective;

[0018] Figure 3 is a top view of this utility model;

[0019] Figure 4 is a cross-sectional view of AA in Figure 3 of this utility model;

[0020] Figure 5 is an enlarged view of section B in Figure 4 of this utility model;

[0021] Figure 6 is an enlarged view of point C in Figure 4 of this utility model;

[0022] Figure 7 is an enlarged view of point D in Figure 4 of this utility model.

[0023] In the diagram: 1. Feeding mechanism; 101. Feeding hopper; 102. Discharge plate; 103. First hydraulic telescopic rod; 104. Equipment frame; 105. Second hydraulic telescopic rod; 106. Feeding frame; 2. Forming mechanism; 201. Upper die; 202. Third hydraulic telescopic rod; 203. Lower die; 204. Fourth hydraulic telescopic rod; 3. Curing mechanism; 301. Regulator bottle; 3011. Air inlet; 3012. Leak-proof piston; 3013. Spring; 302. Sealing cover; 3021. Steam inlet; 3022. Regulator inlet; 3023. Internal thread interface; 303. Steam generator; 304. Steam pipe; 305. Pressure regulating valve; 306. Fifth hydraulic telescopic rod; 307. Slide table; 3071. Vertical plate; 3072. Pulley. Detailed Implementation

[0024] Please refer to Figures 1-7. A calcium fluoride sludge building material molding and curing integrated device includes a feeding mechanism 1 and a molding mechanism 2, and a curing mechanism 3 is provided on the molding mechanism 2.

[0025] The feeding mechanism 1 includes a feeding hopper 101, an equipment frame 104, a feeding frame 106, and a second hydraulic telescopic rod 105. The feeding hopper 101 is fixedly installed on the equipment frame 104. The feeding frame 106 is located at the lower end of the feeding hopper 101 and is slidably connected to the equipment frame 104. The second hydraulic telescopic rod 105 is fixedly installed on the feeding hopper 101 to drive the feeding frame 106. The forming mechanism 2 includes an upper die 201, a lower die 203, a third hydraulic telescopic rod 202, and a fourth hydraulic telescopic rod 204. The upper die 201 is slidably connected to the equipment frame 104 through the third hydraulic telescopic rod 202. The lower die... 203 is slidably connected to the equipment frame 104 via the fourth hydraulic telescopic rod 204. The maintenance mechanism 3 includes a regulator bottle 301, a sealing cover 302, a steam generator 303, a slide table 307, and a fifth hydraulic telescopic rod 306. The steam generator 303 is connected to the top of the sealing cover 302 via a steam pipe 304. A pressure regulating valve 305 is provided on the steam pipe 304. The slide table 307 is slidably connected to the equipment frame 104 via the fifth hydraulic telescopic rod 306. The fifth hydraulic telescopic rod 306 is movably installed at the bottom of the lower pressure mold 203. The regulator bottle 301 is installed on the top of the sealing cover 302.

[0026] Furthermore, a discharge plate 102 is rotatably connected to the bottom of the feeding hopper 101, and a first hydraulic telescopic rod 103 is rotatably connected between the discharge plate 102 and the equipment frame 104. The discharge plate 102 is driven by the first hydraulic telescopic rod 103.

[0027] The first hydraulic telescopic rod 103 drives the discharge plate 102 to flip, thereby controlling the material in the feeding hopper 101 to flow into the receiving frame. After the receiving frame receives the material, the second hydraulic telescopic rod 105 pushes the material in the receiving frame into the lower pressing mold 203, and then the third hydraulic telescopic rod 202 drives the upper pressing mold 201 to press down for extrusion molding.

[0028] Furthermore, the upper end face of the sealing cover 302 is provided with a steam inlet 3021 that communicates with the steam pipe 304. The diameter of the middle part of the steam inlet 3021 is smaller than the diameter of the upper and lower ends. The side end face of the steam inlet 3021 is provided with a regulator inlet 3022 that communicates with the regulator bottle 301.

[0029] Steam generator 303 generates high-temperature and high-pressure steam, which is introduced into the sealed cover 302 through steam inlet 3021. The diameter of the middle part of steam inlet 3021 is smaller than the diameter of the upper and lower ends, forming a Venturi tube effect, thereby drawing the regulator in regulator bottle 301 into the steam. By adding concrete regulator, it hydrolyzes to generate silica gel, repairing microcracks and improving the crack resistance of building materials.

[0030] Furthermore, the upper end face of the regulator inlet 3022 is provided with an internal thread interface 3023, and the bottle mouth of the regulator bottle 301 is provided with an external thread that mates with the internal thread interface 3023.

[0031] The threaded connection of the regulator bottle 301 facilitates disassembly of the regulator bottle 301, thereby enabling rapid replenishment of the regulator and meeting the needs of continuous production.

[0032] Furthermore, the top of the regulator bottle 301 is provided with an air inlet 3011, and a spring 3013 and a leak-proof piston 3012 are slidably connected inside the air inlet 3011. The leak-proof piston 3012 is elastically slidably connected to the regulator bottle 301 through the spring 3013.

[0033] By setting an air inlet 3011 at the top of the regulator bottle 301, the air pressure is balanced to prevent the regulator bottle 301 from deforming under negative pressure under suction. The anti-leak piston 3012 cooperates with the spring 3013 to block the air inlet 3011 under the action of the spring 3013, thus preventing regulator leakage. Only when there is negative pressure inside the regulator bottle 301 can external airflow enter the regulator bottle 301.

[0034] Furthermore, the upper surface of the slide 307 is provided with a vertical plate 3071 that mates with the sealing cover 302.

[0035] When the slide table 307 slides to the lower end of the sealing cover 302, the sealing cover 302, the slide table 307 and the vertical plate 3071 form a sealed cavity. High temperature and high pressure steam is introduced into the cavity, which activates the dissolution of amorphous silica and alumina, accelerates the reaction rate of volcanic ash, compresses the pores, increases the density of the billet, promotes the penetration of steam into the micropores, and achieves uniform curing of the entire cross section.

[0036] Furthermore, the bottom of the slide table 307 is provided with pulleys 3072.

[0037] By using pulley 3072, the friction between slide table 307 and equipment is reduced, the smoothness of slide table 307 is improved, equipment wear is reduced, and the service life of equipment is extended.

[0038] In operation, the first hydraulic telescopic rod 103 drives the discharge plate 102, which is rotatably connected to the bottom of the feeding hopper 101, to rotate, thereby controlling the material in the feeding hopper 101 to flow into the feeding frame 106. After the feeding frame 106 receives the material, the second hydraulic telescopic rod 105 is activated to push the material in the feeding frame 106 into the lower pressing mold 203. Then, the third hydraulic telescopic rod 202 drives the upper pressing mold 201 to press down, cooperating with the lower pressing mold 203 to extrude and shape the material. After shaping... After completion, the lower mold 203 and the upper mold 201 rise together. Then, the fifth hydraulic telescopic rod 306 drives the slide table 307 to slide to the lower end of the sealing cover 302. At this time, the sealing cover 302, the slide table 307, and the vertical plate 3071 on the slide table 307 form a sealed cavity. Subsequently, the steam generator 303 generates high-temperature and high-pressure steam, which is introduced from the steam inlet 3021, whose diameter is smaller than that of the upper and lower ends, at the middle of the upper end face of the sealing cover 302. Utilizing the Venturi effect, steam flows from the side of the steam inlet 3021... The regulator inlet 3022, which runs through the end face, draws the regulator from the regulator bottle 301 into the steam. The steam, along with the regulator, enters the sealed cavity, where the high temperature activates the dissolution of amorphous silica and alumina, accelerating the volcanic ash reaction rate, compressing pores, and increasing the density of the green body. Simultaneously, the steam penetrates into the micropores to achieve uniform curing across the entire cross-section. During this process, the regulator hydrolyzes to generate silica gel, repairing microcracks and improving the crack resistance of the building material. Furthermore, since the regulator bottle 301 has an air inlet 3011 at the top, the spring 3013 and the leak-proof piston 3012 inside the air inlet 3011 work together to balance the air pressure, preventing the regulator bottle 301 from deforming under negative pressure during suction and preventing regulator leakage. The pulley 3072 at the bottom of the slide table 307 reduces the friction between it and the equipment, ensuring smooth sliding of the slide table 307. When the regulator is insufficient, the regulator bottle 301 can be disassembled through the threaded connection structure to quickly replenish the regulator to meet the needs of continuous production.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated device for molding and curing calcium fluoride sludge building materials, comprising a feeding mechanism (1) and a molding mechanism (2), characterized in that: The molding mechanism (2) is provided with a curing mechanism (3); the feeding mechanism (1) includes a feeding hopper (101), an equipment frame (104), a feeding frame (106), and a second hydraulic telescopic rod (105). The feeding hopper (101) is fixedly installed on the equipment frame (104). The feeding frame (106) is located at the lower end of the feeding hopper (101) and is slidably connected to the equipment frame (104). The second hydraulic telescopic rod (105) is fixedly installed on the feeding hopper (101) to drive the feeding frame (106). The molding mechanism (2) includes an upper mold (201), a lower mold (203), a third hydraulic telescopic rod (202), and a fourth hydraulic telescopic rod (204). The upper mold (201) is connected to the equipment frame (104) by the third hydraulic telescopic rod (202). 02) Sliding connection with the equipment frame (104), the lower pressing mold (203) is slidably connected to the equipment frame (104) through the fourth hydraulic telescopic rod (204), the maintenance mechanism (3) includes a regulator bottle (301), a sealing cover (302), a steam generator (303), a slide table (307) and a fifth hydraulic telescopic rod (306), the steam generator (303) is connected to the top of the sealing cover (302) through a steam pipe (304), the slide table (307) is slidably connected to the equipment frame (104) through the fifth hydraulic telescopic rod (306), the fifth hydraulic telescopic rod (306) is movably installed at the bottom of the lower pressing mold (203), and the regulator bottle (301) is installed at the top of the sealing cover (302).

2. The integrated device for molding and curing calcium fluoride sludge building materials as described in claim 1, characterized in that: The bottom of the feeding hopper (101) is provided with a rotating discharge plate (102), and a first hydraulic telescopic rod (103) is provided between the discharge plate (102) and the equipment frame (104), and the discharge plate (102) is driven by the first hydraulic telescopic rod (103).

3. The integrated device for molding and curing calcium fluoride sludge building materials as described in claim 1, characterized in that: The upper end face of the sealing cover (302) is provided with a steam inlet (3021) that communicates with the steam pipe (304). The diameter of the middle part of the steam inlet (3021) is smaller than the diameter of the upper and lower ends. The side end face of the steam inlet (3021) is provided with a regulator inlet (3022) that communicates with the regulator bottle (301).

4. The integrated device for molding and curing calcium fluoride sludge building materials as described in claim 3, characterized in that: The upper end face of the regulator inlet (3022) is provided with an internal thread interface (3023), and the mouth of the regulator bottle (301) is provided with an external thread that mates with the internal thread interface (3023).

5. The integrated device for molding and curing calcium fluoride sludge building materials as described in claim 1, characterized in that: The top of the regulator bottle (301) is provided with an air inlet (3011), and a spring (3013) and a leak-proof piston (3012) are provided in the air inlet (3011). The leak-proof piston (3012) is elastically slidably connected to the regulator bottle (301) through the spring (3013).

6. The integrated device for molding and curing calcium fluoride sludge building materials as described in claim 1, characterized in that: The upper surface of the slide (307) is provided with a vertical plate (3071) that cooperates with the sealing cover (302).

7. The integrated device for molding and curing calcium fluoride sludge building materials as described in claim 1, characterized in that: The bottom of the slide (307) is provided with a pulley (3072).

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