Small-sized energy-saving municipal sludge fast brick making machine beneficial to environmental protection

Abstract

The application provides a small-sized energy-saving municipal sludge fast brick making machine beneficial to environmental protection, and relates to the technical field of brick making machines.The small-sized energy-saving municipal sludge fast brick making machine comprises a supporting frame, an extrusion power assembly arranged in the supporting frame, a lower die seat, a plurality of groups of die cavity mechanisms arranged on the lower die seat, a center plate, a solid brick die cavity and a perforated brick die cavity formed in the center plate, and a protruding column fixed in the perforated brick die cavity.The small-sized energy-saving municipal sludge fast brick making machine further comprises a gas rotating mechanism, the gas rotating mechanism comprises a first air hole, a second air hole and a diameter expansion buffer cavity, a guide rod is fixed in the diameter expansion buffer cavity, and an adjustable valve plate is slidably assembled on the guide rod.The diameter expansion buffer cavity is arranged in the center plate and communicates with the first air hole and the second air hole, and the guide rod and the adjustable valve plate are matched to realize independent switching of double-mold gas paths, so that air leakage and material leakage caused by double-mold shared gas paths can be avoided, air in the die cavity can be smoothly discharged, and the defects of brick blank air bubbles and insufficient layering caused by pressure accumulation can be eliminated.

Description

Technical Field

[0001] This invention belongs to the field of brick-making machine technology, and more specifically, it relates to an environmentally friendly, small-scale, energy-saving, rapid brick-making machine for municipal sludge. Background Technology

[0002] With the continuous advancement of urbanization, the output of municipal sludge, a major byproduct of urban sewage treatment, is increasing year by year. This type of sludge has a high water content and is mixed with organic matter and impurities. If it is disposed of by traditional landfill or incineration methods, it will easily cause environmental problems such as soil and groundwater pollution and air pollutant emissions. Mixing municipal sludge with auxiliary materials and pressing it into building bricks is the core environmental protection path to achieve the resource utilization and harmless disposal of sludge. In small sludge treatment sites at the township and community levels, due to limitations in site size, energy consumption budget, and production needs, small energy-saving brick making machines are often used for on-site brick making. In such scenarios, the equipment needs to be able to handle flexible production of solid bricks and porous bricks, quick changeover, and low-energy operation, while ensuring the quality of brick forming and demolding efficiency.

[0003] For the aforementioned application scenarios requiring miniaturization, energy efficiency, and dual-mode production, existing municipal sludge brick-making machines exhibit significant compatibility deficiencies. The mold cavity venting structure has only a single straight-through vent. During pressing, the air in the mold cavity cannot be discharged smoothly, which can easily cause pressure buildup and lead to defects such as air bubbles, delamination, and insufficient density in the sludge brick blank. In addition, the two molds share the same air passage, which can easily cause cross-contamination of air and materials, and the forming quality of the two brick types interferes with each other.

[0004] The demolding process often relies on mechanical ejection or external air supply. Mechanical ejection can easily cause brick breakage, while external air supply increases equipment energy consumption, which goes against the original intention of small-scale energy-saving design. At the same time, the vent holes have no air storage and buffer structure, and it is impossible to use compressed exhaust gas to achieve demolding without power assistance, resulting in a high rate of sticking to the mold during demolding.

[0005] The exhaust gas path has no adjustable structure, making it unable to adapt to the exhaust requirements of municipal sludge with different moisture contents and proportions. The equipment has poor raw material adaptability, which limits the application scope of sludge resource utilization in brick making.

[0006] Therefore, there is an urgent need to develop a rapid brick-making machine for municipal sludge that is suitable for small-scale processing scenarios, energy-efficient, and produces stable bricks. Summary of the Invention

[0007] To address the aforementioned technical problems, this invention provides an environmentally friendly, small-scale, energy-saving, rapid brick-making machine for municipal sludge. This solves the problem that the mold cavity's exhaust structure consists of only a single, straight-through vent, which prevents air from being smoothly expelled during pressing, easily causing pressure buildup and resulting in defects such as air bubbles, delamination, and insufficient density in the sludge brick blanks. Furthermore, the shared air path between the two molds easily leads to cross-contamination of air and materials, causing interference between the molding quality of the two brick types.

[0008] An environmentally friendly, small-scale, energy-saving municipal sludge rapid brick-making machine includes a support frame housing an extrusion power assembly, and a lower mold base with multiple mold cavity mechanisms. This allows for parallel operation of both molds, improving brick-making efficiency. Each mold cavity mechanism includes a central plate with solid brick cavities and porous brick cavities to meet the differentiated forming requirements of solid and porous bricks. The porous brick cavity has a fixed protruding column for forming regular through holes inside the brick blank, ensuring the porous brick structure meets standards. A gas rotation mechanism includes a first vent hole. The second vent and the expanded diameter buffer cavity serve a dual function of exhaust pressure stabilization and gas storage to assist in demolding. A guide rod is fixed inside the expanded diameter buffer cavity to provide stable guidance for the valve plate to slide and avoid deviation and jamming. An adjustable valve plate is slidably mounted on the guide rod to realize independent switching of air paths for different mold cavities. The upper mold base is equipped with multiple sets of extrusion mechanisms, which work precisely with the mold cavity mechanism to complete high-pressure pressing and molding. The extrusion mechanism includes a fixed hanging rod and an extrusion frame. A perforated extrusion plate and a flat extrusion plate are fixed on the extrusion frame to adapt to the extrusion operation of two types of bricks and improve the versatility of the equipment.

[0009] Preferably, the extrusion power assembly is connected to the upper die base for driving the upper die base toward the lower die base to perform a die-closing extrusion motion, ensuring a stable and uniform output of extrusion force and ensuring that the density of the brick blank meets the requirements.

[0010] Preferably, the center plate is rotatably mounted in the lower mold base via a rotating shaft, allowing for quick flipping and switching of brick types, simplifying the production changeover process. The lower mold base is equipped with a positioning component, which precisely locks after flipping to prevent circumferential displacement and avoid mold misalignment. The center plate is equipped with a hollow screw, and a powerful spring is installed inside the hollow screw to provide stable elastic power for the air valve reset. The powerful spring is fixedly connected to the air valve plate, which is correspondingly arranged at the air vent of the expanded diameter buffer cavity to realize airflow cut-off control and compressed air temporary storage, ensuring the auxiliary demolding effect.

[0011] Preferably, both the porous extrusion plate and the flat extrusion plate are provided with reinforcing ribs, which greatly improves the structural rigidity of the extrusion plate and prevents deformation under high pressure. The reinforcing ribs are respectively provided on the opposite sides of the porous extrusion plate and the flat extrusion plate, which does not affect the flatness of the extrusion forming surface and ensures the surface quality of the brick blank. The porous extrusion plate is provided with through holes that are compatible with the protruding columns, so there is no interference when the mold is closed, and the inner hole of the porous brick is formed completely without damage.

[0012] Preferably, the extrusion frame is rotatably mounted on a fixed hanger and can be rotated synchronously with the mold cavity mechanism to ensure consistency in brick shape switching. The upper mold base is equipped with a positioning component to ensure that the extrusion component is precisely aligned with the mold cavity and improve the dimensional accuracy of the brick blank.

[0013] Preferably, the gas rotation mechanism is located inside the center plate, which has a compact structure and high integration, and does not occupy additional installation space. The expanded diameter buffer chamber connects the first vent hole and the second vent hole to realize centralized buffering of two gas paths and balance the exhaust pressure.

[0014] Preferably, the adjustable valve plate slides smoothly along the guide rod without jamming, and is used to selectively block the first vent or the second vent to prevent cross-contamination of air and materials between the two molds, thus ensuring the stable molding quality of each.

[0015] Preferably, the hollow screw is screwed into the center plate, which is securely assembled and easy to disassemble. The installation depth can be adjusted by rotation, and the spring preload can be flexibly changed to meet the exhaust requirements of municipal sludge raw materials with different moisture contents.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In this invention, by setting an enlarged-diameter buffer cavity connecting the first and second vent holes in the center plate, and cooperating with the guide rod and adjustable valve plate to achieve independent switching of the dual-mold air path, the problems of air and material crosstalk caused by the dual-mold sharing the air path can be avoided. At the same time, the air in the mold cavity can be discharged smoothly, eliminating defects such as air bubbles, delamination, and insufficient density of the brick blank caused by pressure buildup.

[0017] In this invention, an air storage and reset structure is formed by the expansion buffer cavity, the strong spring and the air valve plate. The waste gas in the pressing process can be temporarily stored and sent back into the mold cavity during demolding. The extrusion waste gas is used to achieve demolding without power assistance, without the need for an external air source or mechanical ejection, thus reducing equipment energy consumption and solving the problems of demolding sticking and brick breakage.

[0018] In this invention, the preload of the powerful spring can be adjusted by using a hollow screw with threaded assembly, which allows for flexible control of the exhaust pressure and flow rate. This enables the equipment to adapt to municipal sludge raw materials with different moisture contents and ratios, significantly improving the equipment's material adaptability and application range.

[0019] In this invention, a center plate that can be rotated 180° and an extrusion frame are used in conjunction with a positioning component to achieve precise locking after rotation. This allows for rapid conversion between the production of solid bricks and porous bricks, adapting to the flexible production needs of small sludge treatment sites in towns and communities, and improving brick-making efficiency.

[0020] In this invention, by setting reinforcing ribs on the back of the porous extrusion plate and the flat extrusion plate to improve the structural rigidity, and with the precise positioning of the mold closing structure and the stable venting design, it is possible to ensure that the brick blank has uniform thickness and consistent density, which significantly improves the finished product qualification rate and molding stability of municipal sludge bricks. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the upper mold base of the present invention; Figure 3 This is a schematic diagram of the structure of the lower mold base of the present invention; Figure 4 This is a schematic diagram of the extrusion frame of the present invention; Figure 5 This is a schematic diagram of the solid brick mold cavity of the present invention; Figure 6 This is a schematic diagram of the porous brick mold cavity of the present invention; Figure 7 This is a schematic diagram of the structure of the central plate of the present invention; Figure 8 This is the present invention. Figure 7 An enlarged schematic diagram of the structure at point A.

[0022] In the figure, the correspondence between the component names and the attached drawing numbers is as follows: 1. Center plate; 2. First vent hole; 3. Expanded diameter buffer cavity; 4. Guide rod; 5. Adjustable valve plate; 6. Second vent hole; 7. Protruding column; 8. Hollow screw; 9. Strong spring; 10. Air valve plate; 11. Solid brick mold cavity; 12. Perforated brick mold cavity; 13. Fixed hanger; 14. Extrusion frame; 15. Perforated extrusion plate; 16. Reinforcing rib; 17. Flat extrusion plate; 18. Lower die base; 19. Upper die base; 20. Extrusion power assembly; 21. Support frame. Detailed Implementation

[0023] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0024] Please see Figures 1-8 This invention provides an environmentally friendly, small-scale, energy-saving, rapid brick-making machine for municipal sludge, including a support frame 21, a lower mold base 18 and an upper mold base 19 installed inside the support frame 21, and an extrusion power assembly 20 connected to the upper mold base 19. The lower mold base 18 is provided with multiple sets of mold cavity mechanisms, and a gas rotation mechanism is provided inside the mold cavity mechanism. The upper mold base 19 is provided with multiple sets of extrusion mechanisms corresponding to the mold cavity mechanisms. The extrusion mechanisms and the mold cavity mechanisms cooperate with each other to complete the extrusion molding and auxiliary demolding operations of the municipal sludge mixture.

[0025] Specifically, the support frame 21 serves as the load-bearing frame of the entire machine, providing a stable installation foundation for the lower die base 18, the upper die base 19, and the extrusion power assembly 20. The lower die base 18 is fixedly installed inside the bottom of the support frame 21, and the upper die base 19 is located directly above the lower die base 18 and is connected to the extrusion power assembly 20 for transmission. The extrusion power assembly 20 can drive the upper die base 19 to reciprocate linearly in the vertical direction, realizing the mold closing and extrusion with the lower die base 18 and the mold opening and demolding, thus completing the high-pressure pressing and molding of municipal sludge and supporting auxiliary materials mixture.

[0026] The mold cavity mechanism uses the center plate 1 as the core carrier. The center plate 1 is rotatably installed inside the lower mold base 18 via a rotating shaft. It can be driven by a matching motor to achieve 180° rotation. Every two sets of mold cavity mechanisms are connected to each other and maintain synchronous rotation. The lower mold base 18 is equipped with positioning components corresponding to the mold cavity mechanisms (the positioning components are existing technologies, such as using elastic positioning pins, return springs, and positioning recesses. The positioning recesses are symmetrically opened on the outer wall of the rotating shaft of the center plate 1. The elastic positioning pins are slidably assembled in the preset holes on the inner wall of the lower mold base 18. One end of the return spring abuts against the bottom of the hole in the lower mold base 18, and the other end abuts against the bottom end of the elastic positioning pin. After the center plate 1 completes the 180° rotation, the elastic positioning pin extends upward under the pushing force of the return spring and is locked into the corresponding positioning recess, realizing the locking and positioning of the center plate 1). It can achieve locking and positioning after the center plate 1 is rotated into place, avoiding misalignment and displacement during mold closing, and ensuring the stability of the brick blank forming dimensions.

[0027] Multiple sets of solid brick mold cavities 11 are opened on one side of the center plate 1 to complete the forming operation of solid brick blanks; multiple sets of perforated brick mold cavities 12 are opened on the other side of the center plate 1 opposite to the solid brick mold cavities 11. Multiple protruding columns 7 are vertically fixed in the perforated brick mold cavity 12. The protruding columns 7 are evenly distributed in the cavity and are used to form through holes inside the brick blank to realize the shaping of perforated bricks. The two types of mold cavities can be rotated and alternately face upwards with the center plate 1 to realize the rapid switching production of solid bricks and perforated bricks.

[0028] The gas rotation mechanism is correspondingly set inside the center plate 1 of each mold cavity mechanism, including a first vent 2, a second vent 6, and an expanded diameter buffer cavity 3. One end of the first vent 2 is connected to the bottom of the solid brick mold cavity 11, and one end of the second vent 6 is connected to the bottom of the cavity of the porous brick mold cavity 12. The expanded diameter buffer cavity 3 is opened between the first vent 2 and the second vent 6, and its inner diameter is larger than the aperture of the first vent 2 and the second vent 6, which can form a stable gas storage and airflow buffer space.

[0029] Two parallel guide rods 4 are fixedly installed inside the expanded diameter buffer chamber 3. An adjustable valve plate 5 is slidably mounted on the guide rods 4. The adjustable valve plate 5 can slide smoothly back and forth along the guide rods 4 inside the expanded diameter buffer chamber 3 to achieve selective sealing of different vent holes.

[0030] When producing solid bricks, the adjustable valve plate 5 slides towards the second vent 6 until it is tightly fitted to the port of the second vent 6, completely blocking the second vent 6 and leaving only the first vent 2 as a ventilation passage. When producing porous bricks, the center plate 1 is rotated 180° so that the porous brick mold cavity 12 faces upward, and the adjustable valve plate 5 slides towards the first vent 2 and blocks it, leaving only the second vent 6 as a ventilation passage. This completes the automatic switching of the air passage during the production of the two types of bricks, avoiding cross-contamination of air and material that would affect the molding quality.

[0031] A valve control structure is provided on one side of the expanded diameter buffer chamber 3. The hollow screw 8 is installed inside the center plate 1 by threaded connection. A strong spring 9 is provided in the inner cavity of the hollow screw 8. One end of the strong spring 9 is fixed to the inner wall of the hollow screw 8, and the other end is fixedly connected to the valve plate 10. The valve plate 10 is correspondingly set at the air port of the expanded diameter buffer chamber 3.

[0032] During the die-clamping and extrusion process, the municipal sludge mixture in the die cavity is subjected to high pressure to expel internal air. The air enters the expansion buffer chamber 3 through the corresponding vent holes. The airflow pushes the air valve plate 10 to compress the strong spring 9, so that the air is temporarily stored in the expansion buffer chamber 3. At the same time, the strong spring 9 achieves stable flow restriction and exhaust through the buffering effect, avoiding the defects such as air bubbles, delamination, and material shortage in the brick blank caused by pressure buildup in the die cavity, and improving the density of the brick blank. The hollow screw 8 can be rotated to adjust the installation depth, thereby changing the preload of the strong spring 9 to adapt to the exhaust requirements of municipal sludge mixtures with different moisture contents and different proportions.

[0033] During demolding, the pressure inside the mold cavity drops rapidly. The powerful spring 9 uses its elastic restoring force to push the air valve plate 10 back to its original position quickly, sending the compressed air temporarily stored in the expansion buffer chamber 3 back into the corresponding mold cavity. The airflow acts evenly on the bottom of the solid brick blank, or simultaneously on the bottom and inner wall of the porous brick blank, quickly breaking the negative pressure adsorption between the brick blank and the cavity, and achieving non-destructive assisted demolding.

[0034] The upper die base 19 has a corresponding die cavity mechanism to the lower die base 18, and is equipped with multiple extrusion mechanisms. Each extrusion mechanism includes a fixed hanger 13 and an extrusion frame 14. The top end of the fixed hanger 13 is fixedly installed on the lower end face of the upper die base 19, and the bottom end is rotatably connected to the extrusion frame 14, so that the extrusion frame 14 can be driven by a matching motor to complete a 180° rotation. Every two extrusion mechanisms are connected to each other and rotate synchronously with the die cavity mechanism. The upper die base 19 is equipped with a positioning component (the same as the positioning component in the die cavity mechanism) corresponding to the extrusion mechanism to ensure that the extrusion component is accurately aligned with the die cavity after rotation.

[0035] A perforated extrusion plate 15 and a flat extrusion plate 17 are respectively installed inside the extrusion frame 14. The perforated extrusion plate 15 has through holes that are adapted to the protruding columns 7 in the perforated brick mold cavity 12, and can cooperate with the perforated brick mold cavity 12 to complete the extrusion molding of perforated bricks. The flat extrusion plate 17 is a solid flat plate structure, and can cooperate with the solid brick mold cavity 11 to complete the extrusion molding of solid bricks.

[0036] Both the porous extrusion plate 15 and the flat extrusion plate 17 are fixedly provided with reinforcing ribs 16 on their opposite sides. The reinforcing ribs 16 are evenly distributed, which can significantly improve the structural rigidity and compressive strength of the extrusion plate, avoid deformation and collapse under long-term high pressure extrusion, and ensure that the brick blank has uniform thickness and accurate dimensions.

[0037] In this device: Center plate 1: The core load-bearing component of the mold cavity mechanism, which is rotatably installed inside the lower mold base 18. It can be rotated 180° by a motor. Solid brick and porous brick forming cavities are arranged on both sides respectively. The internal gas rotation mechanism can be integrated. Every two sets can rotate synchronously and lock and fix after being rotated with the positioning component.

[0038] First vent 2: machined inside the center plate 1, one end is connected to the bottom of the solid brick mold cavity 11, and the other end is connected to the expansion buffer cavity 3, which serves to exhaust the mold cavity and provide auxiliary air replenishment during the demolding stage of solid brick production.

[0039] Expanded diameter buffer cavity 3: It is opened inside the center plate 1, between the first vent hole 2 and the second vent hole 6. The inner diameter of the cavity is larger than the diameter of the vent hole. It is used for airflow buffering and pressure stabilization, compression and storage of extrusion exhaust gas, and provides storage space for demolding gas replenishment.

[0040] Guide rod 4: Fixedly installed inside the expanded diameter buffer cavity 3, there are two rods arranged in parallel, providing linear sliding guidance for the adjustable valve plate 5, ensuring that the valve plate moves without deviation or jamming.

[0041] Adjustable valve plate 5: It is slidably sleeved on the guide rod 4 and can slide back and forth along the guide rod 4 to selectively block the first vent hole 2 or the second vent hole 6, so as to realize the automatic switching of the air path between the solid brick and porous brick production modes.

[0042] The second vent 6 is machined inside the center plate 1. One end is connected to the bottom of the porous brick mold cavity 12, and the other end is connected to the expansion buffer cavity 3. It serves to exhaust the mold cavity and provide auxiliary air replenishment during the demolding stage of porous brick production.

[0043] Protruding pillars 7: vertically fixed inside the porous brick mold cavity 12 and evenly distributed, used to form through holes inside the porous brick blank to complete the shaping process of the porous brick.

[0044] Hollow screw 8: It is screwed into the center plate 1 and has a hollow cavity structure. It is used to install a strong spring 9. The installation depth can be adjusted by rotation to change the spring preload.

[0045] Strong spring 9: Installed in the inner cavity of hollow screw 8, one end is fixed to the inner wall of hollow screw 8, and the other end is fixed to valve plate 10, providing elastic reset power for valve plate 10.

[0046] Air valve plate 10: It is set at the air port of the expansion buffer cavity 3 and connected to the strong spring 9. When the mold is closed, it is pushed by the airflow to compress the spring to store air. When the mold is demolded, it releases the airflow with the spring to assist in demolding.

[0047] Solid brick mold cavity 11: It is opened on one side of the center plate 1 and is used to hold municipal sludge mixture. It is pressed into solid brick blanks in conjunction with the flat extrusion plate 17.

[0048] Porous brick mold cavity 12: It is opened on the other side of the center plate 1, and the protruding column 7 is fixed inside to hold municipal sludge mixture. It is pressed into a porous brick blank in conjunction with the porous extrusion plate 15.

[0049] Fixed hanger 13: The top end is fixedly installed on the lower end face of the upper mold base 19, and the bottom end is rotatably connected to the extrusion frame 14, providing installation support and flipping guidance for the extrusion frame 14.

[0050] Extrusion frame 14: Rotatably mounted at the bottom of fixed hanger 13, can be rotated 180°, and has a perforated extrusion plate 15 and a flat extrusion plate 17 installed inside. Each set can rotate synchronously with the mold cavity mechanism.

[0051] The porous extrusion plate 15 is fixedly installed on the extrusion frame 14 and has through holes that are compatible with the protruding column 7. It cooperates with the porous brick mold cavity 12 to complete the extrusion molding of porous bricks.

[0052] Reinforcing ribs 16 are fixed on opposite sides of the porous extrusion plate 15 and the flat extrusion plate 17, respectively, and are evenly distributed to improve the structural rigidity and compressive strength of the extrusion plate and prevent deformation under high pressure.

[0053] Flat extrusion plate 17: It is fixedly installed on the extrusion frame 14 and is a solid flat plate structure. It cooperates with the solid brick mold cavity 11 to complete the extrusion molding of solid bricks.

[0054] Lower mold base 18: It is fixedly installed at the bottom of the support frame 21 and is used to install the center plate 1 and the mold cavity positioning components, providing a stable installation foundation for the mold cavity mechanism.

[0055] Upper die base 19: Located directly above the lower die base 18, it is connected to the extrusion power assembly 20 for transmission. The bottom is equipped with a fixed hanging rod 13 and the extrusion mechanism, and it moves back and forth with the power assembly to close and open the die.

[0056] Extrusion power assembly 20: Installed inside the support frame 21, it is connected to the upper mold base 19 for transmission, and drives the upper mold base 19 to perform vertical linear reciprocating motion to realize the mold closing extrusion and mold opening demolding actions.

[0057] Support frame 21: The load-bearing frame structure of the whole machine, providing a stable installation and support foundation for the lower die base 18, upper die base 19, and extrusion power assembly 20.

[0058] Mold cavity positioning assembly: Installed at the connection between the lower mold base 18 and the center plate 1, it consists of an elastic positioning pin, a return spring, and a positioning recess. After the center plate 1 is flipped, it is locked to prevent circumferential displacement.

[0059] Extrusion positioning assembly: Installed at the connection between the fixed hanger 13 and the extrusion frame 14, it consists of a positioning block, a locking spring, and a positioning slot. The extrusion frame 14 is locked after flipping, ensuring precise alignment with the mold cavity.

[0060] Working principle: When the machine is working, the target brick type is selected according to the production requirements. When producing solid bricks, the mold cavity mechanism is flipped so that the solid brick mold cavity 11 faces upward. At the same time, the extrusion mechanism is flipped so that the flat extrusion plate 17 faces downward. The positioning component completes the locking and positioning. Pretreated municipal sludge mixture is filled into the solid brick mold cavity 11. The extrusion power assembly 20 is started to drive the upper mold base 19 downward. The flat extrusion plate 17 enters the solid brick mold cavity 11 to extrude the mixture under high pressure. The air inside the mixture enters the expansion buffer cavity 3 through the first vent hole 2, which pushes the air valve plate 10 to compress the strong spring 9 to complete the smooth exhaust.

[0061] After extrusion molding, the extrusion power component 20 drives the upper mold base 19 to move upward to open the mold. The strong spring 9 quickly resets and pushes the air valve plate 10 to send the compressed air in the expansion buffer chamber 3 into the mold cavity through the first vent hole 2, forming an air cushion at the bottom of the brick blank to eliminate negative pressure and stick to the mold, thus completing the rapid demolding of the solid brick.

[0062] During the production of porous bricks, the mold cavity mechanism and the extrusion mechanism are simultaneously rotated 180°, so that the porous brick mold cavity 12 faces upward and the porous extrusion plate 15 faces downward. The filling, extrusion, and demolding processes are repeated. During extrusion, air is exhausted through the second vent 6. During demolding, the airflow acts on the bottom of the brick blank and the inner wall of the hole simultaneously, solving the problems of easy sticking and breakage of porous bricks during demolding. The whole machine uses municipal sludge as the main raw material, realizing the resource utilization of waste. The flip-out double mold structure is compatible with the production of two types of bricks. Relying on the gas rotation mechanism, the extrusion exhaust gas is used to achieve demolding without power assistance, without the need for an external air source. It is energy-saving and efficient, and suitable for continuous brick production operations in small-scale municipal sludge resource utilization scenarios.

[0063] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A small, energy-saving, environmentally friendly municipal sludge rapid brick-making machine, comprising a support frame (21), wherein the support frame (21) is provided with an extrusion power assembly (20), characterized in that, Also includes: The lower mold base (18) is provided with multiple sets of mold cavity mechanisms. The mold cavity mechanism includes a central plate (1). The central plate (1) is provided with a solid brick mold cavity (11) and a porous brick mold cavity (12). A protruding column (7) is fixed inside the porous brick mold cavity (12). A gas rotation mechanism includes a first vent (2), a second vent (6), and an expanded diameter buffer chamber (3). A guide rod (4) is fixed inside the expanded diameter buffer chamber (3), and an adjustable valve plate (5) is slidably mounted on the guide rod (4). The upper mold base (19) is equipped with multiple extrusion mechanisms. The extrusion mechanism includes a fixed hanging rod (13) and an extrusion frame (14). The extrusion frame (14) is fixed with a perforated extrusion plate (15) and a flat extrusion plate (17).

2. The environmentally friendly, small-scale, energy-saving, rapid brick-making machine for municipal sludge as described in claim 1, characterized in that, The extrusion power assembly (20) is connected to the upper die base (19) for driving the upper die base (19) to perform a die-closing extrusion motion toward the lower die base (18).

3. The environmentally friendly, small-scale, energy-saving municipal sludge rapid brick-making machine as described in claim 2, characterized in that, The center plate (1) is rotatably mounted in the lower mold base (18) via a rotating shaft, and the lower mold base (18) is equipped with a positioning component; The central plate (1) is provided with a hollow screw (8), and the hollow screw (8) is provided with a strong spring (9). The strong spring (9) is fixedly connected to the air valve plate (10), and the air valve plate (10) is arranged at the air port of the expanded diameter buffer cavity (3).

4. The environmentally friendly, small-scale, energy-saving, rapid brick-making machine for municipal sludge as described in claim 3, characterized in that, Both the porous extrusion plate (15) and the flat extrusion plate (17) are provided with reinforcing ribs (16).

5. The environmentally friendly, small-scale, energy-saving, rapid brick-making machine for municipal sludge as described in claim 4, characterized in that, The extrusion frame (14) is rotatably mounted on the fixed hanger (13), and the upper mold base (19) is equipped with a positioning component.

6. The environmentally friendly, small-scale, energy-saving, rapid brick-making machine for municipal sludge as described in claim 5, characterized in that, The gas rotation mechanism is located inside the central plate (1); The expanded diameter buffer cavity (3) is connected to the first vent (2) and the second vent (6).

7. The environmentally friendly, small-scale, energy-saving, rapid brick-making machine for municipal sludge as described in claim 6, characterized in that, The adjustable valve plate (5) slides along the guide rod (4) to selectively block the first vent (2) or the second vent (6).

8. The environmentally friendly, small-scale, energy-saving, rapid brick-making machine for municipal sludge as described in claim 7, characterized in that, The hollow screw (8) is screwed into the center plate (1) by threaded connection.

9. The environmentally friendly, small-scale, energy-saving, rapid brick-making machine for municipal sludge as described in claim 8, characterized in that, The porous extrusion plate (15) has through holes that are compatible with the protruding column (7).

10. The environmentally friendly, small-scale, energy-saving, rapid brick-making machine for municipal sludge as described in claim 9, characterized in that, The reinforcing ribs (16) are respectively disposed on the opposite sides of the porous extrusion plate (15) and the flat extrusion plate (17).

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