Crushing system for producing cement from solid waste based on multi-section crushing

Abstract

The invention discloses a crushing system for producing cement from solid waste based on multi-section crushing, which comprises a crushing box, the top of the crushing box is provided with a solid waste feeding port, the bottom of the crushing box is provided with a solid waste discharging port, and the crushing box is internally provided with a jaw crushing mechanism. And a guide plate is fixedly mounted in the crushing box and located at the bottom of the jaw type crushing mechanism, a conical crushing mechanism is fixedly mounted at the bottom of the guide plate, and a dust removal mechanism is fixedly mounted on the inner side of the solid waste feeding opening. On the basis of multi-section type crushing, the solid waste crushing efficiency and effect are improved, the solid waste crushing requirement is conveniently and flexibly adjusted, dust generated in the crushing process is reasonably filtered and collected, and the device is more environmentally friendly.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste cement production, and more specifically, to a crushing system for producing cement from solid waste based on multi-stage crushing. Background Art

[0002] Using solid waste (solid waste) to produce cement is a sustainable treatment method that reduces the stacking and landfilling of solid waste. If a large amount of solid waste is piled or landfilled in the traditional way, it will occupy a lot of land resources and may cause pollution to the soil, water and atmosphere, reduce carbon dioxide emissions, and in cement production, using solid waste to partially replace traditional raw materials can reduce the use of raw materials such as limestone, thereby reducing carbon dioxide emissions caused by the decomposition of limestone. For cement production companies, the use of solid waste can reduce production costs, realize the resource utilization of solid waste, and improve the overall benefits of the company. Using solid waste to produce cement is a technology with broad development prospects, which is of great significance in realizing resource recycling, environmental protection and economic benefits.

[0003] The feeding equipment on the cement production line (such as belt scales, screw feeders, etc.) has certain requirements for the particle size of the material. If the particle size of the solid waste is too large, it may cause the feeding equipment to be blocked or unable to be accurately measured; during the calcination process of cement clinker, the material needs to be fully heated and reacted in the rotary kiln. If the solid waste exists in large pieces, it is difficult to be fully heated and reacted in the rotary kiln. Therefore, before producing cement from solid waste, the large pieces of solid waste need to be crushed to meet the production needs of cement.

[0004] At present, most crushing devices have a single crushing method, which may result in the particle size of solid waste after crushing not meeting the demand. It is often necessary to use different crushing devices for multiple crushing, which affects the production efficiency of cement after solid waste crushing. Solid waste is very likely to generate a lot of dust during the crushing process. Usually, wind negative pressure is used as the main means to collect dust. However, the common problem of wind dust removal equipment is that it is large in size and the dust removal effect is not ideal. The use of spray dust reduction may cause water and solid waste to mix, resulting in changes in the chemical properties of some solid wastes. For example, some solid wastes containing soluble salts (for example, calcium hydroxide and other soluble substances may be contained in carbide slag) may react chemically when they come into contact with water. Calcium hydroxide will dissolve in water and form an alkaline solution, which may change the chemical composition of the solid waste and affect its performance in cement production. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a crushing system for producing cement from solid waste based on multi-stage crushing to solve the background technical problems.

[0006] To achieve the above object, the present invention adopts the following technical solution: A crushing system for producing cement from solid waste based on multi-stage crushing includes a crushing box, a solid waste feeding port is arranged on the top of the crushing box, a solid waste discharging port is arranged on the bottom of the crushing box, a jaw crushing mechanism is installed inside the crushing box, a guide plate is fixedly installed inside the crushing box at the bottom of the jaw crushing mechanism, a cone crushing mechanism is fixedly installed at the bottom of the guide plate, and a dust removal mechanism is fixedly installed on the inner side of the solid waste feeding port.

[0007] The jaw crushing mechanism includes a fixed jaw plate fixedly installed inside a crushing box, a first drive motor fixedly installed on the crushing box, an eccentric shaft fixedly installed on the output shaft of the first drive motor, a movable jaw plate installed on the eccentric shaft, the movable jaw plate is located on the inner side of the crushing box, a toggle plate fixedly installed inside the crushing box, and the side of the movable jaw plate away from the fixed jaw plate is connected to the toggle plate.

[0008] The cone crushing mechanism includes a fixed cone fixedly installed inside a crushing box, a moving cone is arranged on the inner side of the fixed cone, a second drive motor is fixedly installed on the front side of the crushing box, an output shaft of the second drive motor is transmission-connected to the moving cone through a steering coupling, and spiral crushing teeth are integrally formed on the moving cone.

[0009] A feed pipe is fixedly installed on the inner side of the solid waste feeding port, and the dust removal mechanism includes a water curtain nozzle and a fan fixedly installed between the inner wall of the solid waste feeding port and the feed pipe, the fan is located on the left side of the water curtain nozzle, and two transmission rollers are rotatably installed between the inner wall of the solid waste feeding port and the feed pipe, and a filter cloth is transmission-connected between the two transmission rollers, the water curtain nozzle is located on the left side of the filter cloth, and a drainage baffle located between the water curtain nozzle and the filter cloth is fixedly connected to the top of the feed pipe, a guide groove is provided on the side of the drainage baffle close to the water curtain nozzle, and the guide groove is connected to the outside of the crushing box, and a third drive motor is fixedly installed on the top of the crushing box, and the output shaft of the third drive motor passes through the crushing box and is fixedly connected to one of its transmission rollers.

[0010] As a further description of the above technical solution: The crushing box is composed of a top box, a primary crushing box, a secondary crushing box, a drop box and a bottom box assembled by bolts, the dust removal mechanism is installed inside the top box, the jaw crushing mechanism is fixedly installed inside the primary crushing box, and the guide plate and the cone crushing mechanism are installed inside the secondary crushing box; The number of the drop box is at least one, and the inner side of the drop box is rotatably connected to two crushing rollers rotating in opposite directions. When the number of the drop box is more than one, the crushing tooth density of the crushing roller increases gradually from top to bottom; The primary crushing box, the secondary crushing box, the blanking box and the bottom box are all provided with ventilation cavities, and two adjacent ventilation cavities are connected to each other, and the top ventilation cavity is connected to the interior of the top box, and the secondary crushing box, the blanking box and the bottom box are provided with through grooves, which are connected to the interior of the ventilation cavity through the through grooves.

[0011] As a further description of the above technical solution: The movable cone includes a rotating shaft, the output shaft of the second drive motor is connected to the rotating shaft, a cone head is integrally formed at the bottom end of the rotating shaft, a vertebral body is slidably connected to the rotating shaft, the spiral crushing teeth are arranged on the cone head and the vertebral body, and a hydraulic mechanism is fixedly installed at the bottom of the guide plate, and the bottom of the hydraulic mechanism is connected to the vertebral body.

[0012] As a further description of the above technical solution: The hydraulic mechanism includes a hydraulic cylinder fixedly installed on the front side of the crushing box, the oil outlet of the hydraulic cylinder is fixedly connected to an oil pipe, the top of the vertebral body is rotatably connected to a connecting ring, a hydraulic chamber is opened inside the vertebral body, the other end of the oil pipe passes through the secondary crushing box and is fixedly connected to the connecting ring, the interior of the oil pipe is connected to the interior of the hydraulic chamber, a push rod is integrally formed at the top of the cone head, the top of the push rod extends to the interior of the hydraulic chamber and is in close contact with the inner wall of the hydraulic chamber, the top of the cone head is conical, the bottom of the vertebral body matches the top of the cone head, and the bottom of the vertebral body and the top of the cone head are both smoothly arranged.

[0013] As a further description of the above technical solution: A vertical plate fixed to the inner wall of the solid waste feeding port is provided on the opposite side of the two driving rollers, and a cleaning roller is rotatably connected to the inner side of one of the vertical plates. A fourth driving motor is fixedly installed on the top of the crushing box, and the output shaft of the fourth driving motor passes through the crushing box and is fixedly connected to the cleaning roller. The cleaning roller rotates in the opposite direction to the adjacent driving roller.

[0014] As a further description of the above technical solution: The primary crushing box, the secondary crushing box, the material drop box and the inner wall of the ventilation cavity in the bottom box are all fixedly connected with staggered dust shields, and electric heating pipes are installed inside the dust shields. The temperature of the electric heating pipes in the ventilation cavity in the primary crushing box, the secondary crushing box, the material drop box and the bottom box gradually increases from bottom to top, and a strip through hole is opened on the side where the dust shield is connected to the inner wall of the ventilation cavity; A light scraper is inserted into the front of the crushing box. The light scraper is inserted into the inner side of the front vertical plate and contacts the cleaning roller. A notch for dust discharge and light scraper insertion is arranged on the front vertical plate.

[0015] Compared with the prior art, the advantages of the present invention are: (1) This scheme, a multi-stage crushing method, can quickly crush large pieces of solid waste into solid waste with smaller particle sizes to meet the particle size required for cement production, improve cement production quality, and ensure the mixed production properties.

[0016] (2) This solution replaces the traditional wind dust removal method and adopts a combination of water curtain and filter cloth to improve the filtering and collection effect of dust generated during the crushing process, avoid the contact between water and solid waste, ensure the nature of solid waste, and the structure is more compact and reasonable than that of wind dust removal.

[0017] (3) In this solution, the combined crushing box is convenient for users to adjust the combination mode according to the particle size requirements of solid waste production of cement, so that the present invention can be applied, with fewer limitations on use, and it is convenient for users to inspect and maintain the crushing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a front view cross-sectional structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the front cross-sectional structure of the moving cone of the present invention; Figure 4 It is a schematic diagram of the connection structure between the transmission roller and the filter cloth of the present invention; Figure 5 It is a structural schematic diagram of the drainage baffle of the present invention; Figure 6 This is a schematic diagram of the connection structure between the dust shield and the electric heating pipe of the present invention; Figure 7 This is a schematic diagram of the airflow direction when the crushing box of the present invention is working.

[0019] Description of the numbers in the figure: 100, crushing box; 110, top box; 120, primary crushing box; 130, secondary crushing box; 140, drop box; 141, crushing roller; 150, ventilation chamber; 160, bottom box; 170, dust shield; 180, electric heating pipe; 200, solid waste feeding port; 210, feeding pipe; 300, solid waste discharge port; 400, jaw crushing mechanism; 410, fixed jaw plate; 420, first drive motor; 430, eccentric shaft; 440, movable jaw plate; 450, toggle plate; 500, guide plate; 600, cone crushing mechanism; 610, fixed cone; 6 20. Moving cone; 621. Rotating shaft; 622. Cone head; 623. Cone body; 630. Second driving motor; 640. Spiral crushing teeth; 650. Hydraulic mechanism; 651. Hydraulic cylinder; 652. Oil pipe; 653. Connecting ring; 654. Hydraulic chamber; 655. Push rod; 700. Dust removal mechanism; 710. Water curtain nozzle; 720. Drive roller; 730. Filter cloth; 740. Drainage baffle; 750. Third driving motor; 760. Fan; 770. Vertical plate; 771. Cleaning roller; 772. Fourth driving motor; 773. Light scraper. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] See also Figure 1-7 , the present invention provides embodiment 1: A crushing system for producing cement from solid waste based on multi-stage crushing includes a crushing box 100, a solid waste feeding port 200 is arranged on the top of the crushing box 100, a solid waste discharging port 300 is arranged on the bottom of the crushing box 100, a jaw crushing mechanism 400 is installed inside the crushing box 100, a guide plate 500 is fixedly installed inside the crushing box 100 at the bottom of the jaw crushing mechanism 400, a cone crushing mechanism 600 is fixedly installed at the bottom of the guide plate 500, and a dust removal mechanism 700 is fixedly installed on the inner side of the solid waste feeding port 200.

[0022] The jaw crushing mechanism 400 includes a fixed jaw plate 410 fixedly installed inside the crushing box 100, a first drive motor 420 is fixedly installed on the crushing box 100, an eccentric shaft 430 is fixedly installed on the output shaft of the first drive motor 420, a movable jaw plate 440 is installed on the eccentric shaft 430, the movable jaw plate 440 is located on the inner side of the crushing box 100, a toggle plate 450 is fixedly installed inside the crushing box 100, and the side of the movable jaw plate 440 away from the fixed jaw plate 410 is connected to the toggle plate 450.

[0023] The cone crushing mechanism 600 includes a fixed cone 610 fixedly installed inside the crushing box 100, a moving cone 620 is arranged on the inner side of the fixed cone 610, a second drive motor 630 is fixedly installed on the front of the crushing box 100, the output shaft of the second drive motor 630 is transmission-connected to the moving cone 620 through a steering coupling, and the moving cone 620 is integrally formed with spiral crushing teeth 640.

[0024] The solid waste raw materials are fed into the crushing box 100 through the feeding pipe 210 in the solid waste feeding port 200. When the solid waste passes through the jaw crushing mechanism 400, the first driving motor 420 is powered on to drive the eccentric shaft 430 to rotate, so that the movable jaw plate 440 reciprocates, wherein the toggle plate 450 limits the movement trend of the movable jaw plate 440, and the solid waste is preliminarily crushed by utilizing the change in the distance between the movable jaw plate 440 and the fixed jaw plate 410. The preliminarily crushed solid waste falls onto the guide plate 500, and the falling direction is guided by the guide plate 500 to fall between the fixed cone 610 and the movable cone 620. In the gap between the two, the second driving motor 630 works to drive the movable cone 620 to rotate, and the spiral crushing teeth 640 on the movable cone 620 are used to further crush the solid waste, so that the solid waste can reach the expected particle size as much as possible, and then be discharged from the solid waste discharge port 300 at the bottom of the crushing box 100. During the crushing process, the dust generated is collected and filtered by the dust removal mechanism 700 to avoid polluting the environment. The multi-stage crushing method can quickly crush large pieces of solid waste into smaller particles to meet the particle size required for cement production, improve cement production quality, and ensure the mixed production properties.

[0025] The movable cone 620 includes a rotating shaft 621, the output shaft of the second drive motor 630 is connected to the rotating shaft 621, a cone head 622 is integrally formed at the bottom end of the rotating shaft 621, a vertebral body 623 is slidably connected to the rotating shaft 621, spiral crushing teeth 640 are arranged on the cone head 622 and the vertebral body 623, a hydraulic mechanism 650 is fixedly installed at the bottom of the guide plate 500, the bottom of the hydraulic mechanism 650 is connected to the vertebral body 623, the top of the cone head 622 is conical, the bottom of the vertebral body 623 matches the top of the cone head 622, and the bottom of the vertebral body 623 and the top of the cone head 622 are both smoothly arranged.

[0026] The hydraulic mechanism 650 can intermittently drive the vertebral body 623 to move up and down slightly, thereby controlling the gap between the vertebral body 623 and the fixed cone 610, making it convenient for solid waste to enter. When the vertebral body 623 descends and merges with the cone head 622, the solid waste can be squeezed and crushed, and the spiral crushing teeth 640 can complete the conical crushing of the solid waste. The cone head 622 with a constant bottom height ensures that large-diameter solid waste will not fall. This structure improves the crushing effect and can prevent solid waste from getting stuck in the gap, resulting in the inability of the solid waste to fall normally for crushing, thereby reducing the failure rate of the cone crushing mechanism 600. When the vertebral body 623 rises, some solid waste may enter the gap between the vertebral body 623 and the cone head 622. After the vertebral body 623 descends, the solid waste between the two can be hammered and crushed, and then fall by centrifugal force and the solid waste's own gravity.

[0027] The hydraulic mechanism 650 includes a hydraulic cylinder 651 fixedly installed on the front side of the crushing box 100, an oil outlet of the hydraulic cylinder 651 is fixedly connected to an oil pipe 652, a connecting ring 653 is rotatably connected to the top of the vertebral body 623, and the rotating connection between the two is sealed, a hydraulic chamber 654 is opened inside the vertebral body 623, the other end of the oil pipe 652 passes through the secondary crushing box 130 and is fixedly connected to the connecting ring 653, the interior of the oil pipe 652 is connected to the interior of the hydraulic chamber 654, a push rod 655 is integrally formed on the top of the cone head 622, the top of the push rod 655 extends to the inside of the hydraulic chamber 654 and is in close contact with the inner wall of the hydraulic chamber 654.

[0028] Hydraulic oil is provided through the hydraulic cylinder 651, and the hydraulic cylinder 651 is connected with the hydraulic chamber 654 through the oil pipe 652. When the hydraulic oil is filled into the hydraulic chamber 654, the vertebral body 623 will be lifted up due to the restriction of the bottom by the push rod 655, thereby completing the increase in the height of the vertebral body 623. Otherwise, the height of the vertebral body 623 will be reduced. The rotating connecting ring 653 ensures that the oil pipe 652 remains stable during the rotation of the moving cone 620.

[0029] See also Figure 1 , 2 , 4 and 5, the present invention further provides Example 2 based on Example 1: A feed pipe 210 is fixedly installed on the inner side of the solid waste feeding port 200. The dust removal mechanism 700 includes a water curtain nozzle 710 and a fan 760 fixedly installed between the inner wall of the solid waste feeding port 200 and the feed pipe 210. The fan 760 is located on the left side of the water curtain nozzle 710. Two transmission rollers 720 are rotatably installed between the inner wall of the solid waste feeding port 200 and the feed pipe 210. A filter cloth 730 is transmission-connected between the two transmission rollers 720. The water curtain nozzle 710 is located on the left side of the filter cloth 730. The feed pipe 2 A drainage baffle 740 located between the water curtain nozzle 710 and the filter cloth 730 is fixedly connected to the top of 10, and a guide groove is opened on the side of the drainage baffle 740 close to the water curtain nozzle 710, and the guide groove is connected to the outside of the crushing box 100. The water blocked by the drainage baffle 740 can flow out through the guide groove for recycling. A third drive motor 750 is fixedly installed on the top of the crushing box 100, and the output shaft of the third drive motor 750 passes through the crushing box 100 and is fixedly connected to a transmission roller 720 thereof.

[0030] When solid waste is crushed, a large amount of dust is often generated during the solid waste delivery and crushing processes. When the dust is flying, it is initially collected through filtration by the filter cloth 730, and then further dust reduction is completed through the water curtain sprayed by the water curtain nozzle 710 to prevent dust from flying around and polluting the environment, thereby ensuring the working environment of the workers. The fan 760 can guide the airflow direction and put the end of the feed pipe 210 in the crushing box 100 in a negative pressure state to prevent dust from being discharged from the other end of the feed pipe 210 without filtering, thereby improving the dust collection effect. In addition to the initial filtering effect, the filter cloth 730 can prevent water droplets splashing from the water curtain from entering the crushing box 100 and directly contacting the solid waste, thereby preventing the properties of some crushed solid waste from changing, thereby ensuring the stability of the properties of the produced cement.

[0031] A vertical plate 770 fixed to the inner wall of the solid waste feeding port 200 is provided on the opposite side of the two driving rollers 720, and a cleaning roller 771 is rotatably connected to the inner side of one of the vertical plates 770. A fourth driving motor 772 is fixedly installed on the top of the crushing box 100. The output shaft of the fourth driving motor 772 passes through the crushing box 100 and is fixedly connected to the cleaning roller 771. The cleaning roller 771 rotates in the opposite direction to the adjacent driving roller 720.

[0032] The vertical plate 770 can fill the gap between the opposite side of the cleaning roller 771 and the inner wall of the solid waste feeding port 200 to ensure the dust filtering effect, and the cleaning roller 771 in the vertical plate 770 can clean the dust attached to the filter cloth 730 to maintain the filtering effect of the filter cloth 730. Since the filter cloth 730 has the effect of blocking the splashing water droplets of the water curtain, the filter cloth 730 will be wetted by water, and most solid waste is hydrophilic, thereby improving the dust filtering and adsorption effect of the filter cloth 730.

[0033] A light scraper 773 is inserted into the front of the crushing box 100. The light scraper 773 is inserted into the inner side of the front vertical plate 770 and contacts the cleaning roller 771. The front vertical plate 770 is provided with a notch for dust discharge and light scraper 773 insertion.

[0034] By inserting a light scraper 773 into the crushing box 100 , dust or plaster on the cleaning roller 771 can be scraped off and discharged through the gap to ensure the cleanliness of the cleaning roller 771 itself and maintain the cleaning effect of the cleaning roller 771 on the filter cloth 730 .

[0035] See also Figure 1 , 2 , 6 and 7, the present invention further provides Example 3 based on Example 1 and Example 2: The crushing box 100 is composed of a top box 110, a primary crushing box 120, a secondary crushing box 130, a drop box 140 and a bottom box 160 which are assembled by bolts. The dust removal mechanism 700 is installed inside the top box 110, the jaw crushing mechanism 400 is fixedly installed inside the primary crushing box 120, and the guide plate 500 and the cone crushing mechanism 600 are installed inside the secondary crushing box 130.

[0036] The main structure of the crushing box 100, which is composed of the top box 110, the primary crushing box 120, the secondary crushing box 130, the drop box 140 and the bottom box 160, can be adjusted and replaced by removing the bolts, which is convenient for the inspection and replacement of the crushing structure in the crushing box 100, and the damaged crushing structure can also be replaced as a whole, which facilitates the flexible use of the crushing system.

[0037] There is at least one material drop box 140 , and two crushing rollers 141 rotating in opposite directions are rotatably connected to the inner side of the material drop box 140 . When there are more than one material drop box 140 , the crushing tooth density of the crushing rollers 141 gradually increases from top to bottom.

[0038] Since different solid wastes often require different crushing particle sizes, when the jaw crusher 400 and the cone crusher 600 cannot meet the crushing needs, the crushing work can be further completed by increasing the number of drop boxes 140 and adding corresponding crushing rollers 141 in the drop boxes 140, thereby improving the applicability of the crushing system. Its flexible adjustability can meet the needs of solid waste cement production.

[0039] The primary crushing box 120, the secondary crushing box 130, the material drop box 140 and the bottom box 160 are all provided with ventilation chambers 150, and two adjacent ventilation chambers 150 are connected to each other, and the top ventilation chamber 150 is connected to the interior of the top box 110, and the secondary crushing box 130, the material drop box 140 and the bottom box 160 are provided with through grooves, which are connected to the interior of the ventilation chamber 150 through the through grooves.

[0040] The dust generated during crushing in the crushing box 100 is directed upward through the ventilation cavity 150 and is collected and processed by the dust removal mechanism 700 .

[0041] The inner walls of the ventilation cavity 150 in the primary crushing box 120, the secondary crushing box 130, the blanking box 140 and the bottom box 160 are all fixedly connected with staggered dust shields 170, and electric heating pipes 180 are installed inside the dust shields 170. The temperature of the electric heating pipes 180 in the ventilation cavity 150 in the primary crushing box 120, the secondary crushing box 130, the blanking box 140 and the bottom box 160 gradually increases from bottom to top, and a strip through hole is opened on the side where the dust shield 170 is connected to the inner wall of the ventilation cavity 150.

[0042] The dust shield 170 provided therein can shield the floating dust. Firstly, it can reduce the rising force of large dust particles to facilitate the collection and sedimentation of large dust particles; secondly, it can reduce the burden of excessive dust on the filter cloth 730 to ensure the normal filtering function of the filter cloth 730; and to a certain extent, reducing the sedimentation height of each ventilation cavity 150 can reduce the rising distance of the particles during the sedimentation process, thereby accelerating the sedimentation speed.

[0043] An insulation layer is provided on the outside of the crushing box 100. When the electric heating tube 180 is working, the temperature of the dust shield 170 in the crushing box 100 rises, and the internal air of the ventilation chamber 150 is heated. When the air in the ventilation chamber 150 is heated to a certain degree, the thermal expansion and contraction of the air can be utilized, and the chimney effect is formed in conjunction with the chimney structure of the crushing box 100. External air enters from the solid waste discharge port 300, and forms an upward airflow along the inside of the crushing box 100. The installation space of the crushing structure is the main airflow channel, and it is also the main channel for the rising airflow to drive the dust to rise. Then, the gas rises to pass through the dust removal mechanism 700 for filtration and collection. At the same time, the fan 760 guides the rising airflow to prevent the rising airflow from being discharged through the feeding pipe 210.

[0044] When the main channel of the rising airflow is blocked due to the accumulation of broken solid waste, the airflow can also be raised through the through slots connected to the ventilation cavity 150, thereby achieving the auxiliary dust collection effect. When the temperature gradually increases from bottom to top under the chimney effect, the hot air naturally rises and forms a strong upward airflow. Compared with the situation where the temperature gradient is not obvious or the temperature is abnormal (such as decreasing from bottom to top), this normal chimney effect of gradually increasing temperature can make the air flow smoother and faster. The heat generated by the electric heating tube 180 can also heat the solid waste being crushed in the crushing box 100 to dry the solid waste. The circulating air can reduce the water vapor content, thereby reducing the amount of reaction between water and solid waste, ensuring the properties of cement produced from solid waste.

[0045] The strip-shaped through holes are provided to facilitate the passage of air and avoid excessive dust accumulation caused by dead corners caused by the connection between the dust shield 170 and the inner wall of the ventilation chamber 150. When the inside of the ventilation chamber 150 needs to be cleaned, the fan 760 can be temporarily turned off. Then, through the vibration generated during the operation of the entire equipment, the dust that may be accumulated and attached at the connection between the dust shield 170 and the inner wall of the ventilation chamber 150 can be vibrated off, and the strip-shaped through holes can play a certain degree of dust anti-adhesion role, resulting in a higher efficiency in the vibration and shedding of dust.

[0046] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A crushing system for producing cement from solid waste based on multi-stage crushing, comprising a crushing box (100), the top of the crushing box (100) being provided with a solid waste feeding port (200), and the bottom of the crushing box (100) being provided with a solid waste discharging port (300), characterized in that: A jaw crushing mechanism (400) is installed inside the crushing box (100), a guide plate (500) is fixedly installed at the bottom of the jaw crushing mechanism (400) inside the crushing box (100), a cone crushing mechanism (600) is fixedly installed at the bottom of the guide plate (500), and a dust removal mechanism (700) is fixedly installed on the inner side of the solid waste feeding port (200); The jaw crushing mechanism (400) comprises a fixed jaw plate (410) fixedly mounted inside a crushing box (100); a first drive motor (420) is fixedly mounted on the crushing box (100); an eccentric shaft (430) is fixedly mounted on the output shaft of the first drive motor (420); a movable jaw plate (440) is mounted on the eccentric shaft (430); the movable jaw plate (440) is located on the inner side of the crushing box (100); a toggle plate (450) is fixedly mounted inside the crushing box (100); and a side of the movable jaw plate (440) away from the fixed jaw plate (410) is connected to the toggle plate (450); The cone crushing mechanism (600) comprises a fixed cone (610) fixedly mounted inside a crushing box (100), a moving cone (620) being arranged inside the fixed cone (610), a second drive motor (630) being fixedly mounted on the front of the crushing box (100), an output shaft of the second drive motor (630) being transmission-connected to the moving cone (620) via a steering coupling, and spiral crushing teeth (640) being integrally formed on the moving cone (620); A feeding pipe (210) is fixedly installed on the inner side of the solid waste feeding port (200); the dust removal mechanism (700) comprises a water curtain nozzle (710) and a fan (760) fixedly installed between the inner wall of the solid waste feeding port (200) and the feeding pipe (210); the fan (760) is located on the left side of the water curtain nozzle (710); two transmission rollers (720) are rotatably installed between the inner wall of the solid waste feeding port (200) and the feeding pipe (210); a filter cloth (730) is transmission-connected between the two transmission rollers (720); the water curtain nozzle (710) is fixedly installed between the inner wall of the solid waste feeding port (200) and the feeding pipe (210); and the filter cloth (730) is transmission-connected between the two transmission rollers (720). 0) is located on the left side of the filter cloth (730), the top of the feed pipe (210) is fixedly connected to a drainage baffle (740) located between the water curtain nozzle (710) and the filter cloth (730), a guide groove is provided on a side of the drainage baffle (740) close to the water curtain nozzle (710), and the guide groove is connected to the outside of the crushing box (100), and a third drive motor (750) is fixedly installed on the top of the crushing box (100), and the output shaft of the third drive motor (750) passes through the crushing box (100) and is fixedly connected to a drive roller (720) thereof.

2. The crushing system for producing cement from solid waste based on multi-stage crushing according to claim 1 is characterized in that: The crushing box (100) is composed of a top box (110), a primary crushing box (120), a secondary crushing box (130), a material drop box (140) and a bottom box (160) assembled by bolts; the dust removal mechanism (700) is installed inside the top box (110); the jaw crushing mechanism (400) is fixedly installed inside the primary crushing box (120); and the guide plate (500) and the cone crushing mechanism (600) are installed inside the secondary crushing box (130).

3. The crushing system for producing cement from solid waste based on multi-stage crushing according to claim 2 is characterized in that: The number of the material dropping box (140) is at least one, and the inner side of the material dropping box (140) is rotatably connected to two crushing rollers (141) rotating in opposite directions. When the number of the material dropping box (140) is more than one, the crushing tooth density of the crushing roller (141) gradually increases from top to bottom.

4. The crushing system for producing cement from solid waste based on multi-stage crushing according to claim 2 is characterized in that: The primary crushing box (120), the secondary crushing box (130), the material drop box (140) and the bottom box (160) are all provided with ventilation cavities (150) inside, two adjacent ventilation cavities (150) are communicated with each other, and the top ventilation cavity (150) is communicated with the inside of the top box (110), and the secondary crushing box (130), the material drop box (140) and the bottom box (160) are provided with through grooves inside, and are communicated with the inside of the ventilation cavity (150) through the through grooves.

5. The crushing system for producing cement from solid waste based on multi-stage crushing according to claim 1 is characterized in that: The movable cone (620) comprises a rotating shaft (621), the output shaft of the second drive motor (630) is connected to the rotating shaft (621), a cone head (622) is integrally formed at the bottom end of the rotating shaft (621), a cone body (623) is slidably connected to the rotating shaft (621), the spiral crushing teeth (640) are arranged on the cone head (622) and the cone body (623), and a hydraulic mechanism (650) is fixedly installed at the bottom of the guide plate (500), and the bottom of the hydraulic mechanism (650) is connected to the cone body (623).

6. The crushing system for producing cement from solid waste based on multi-stage crushing according to claim 5 is characterized in that: The hydraulic mechanism (650) comprises a hydraulic cylinder (651) fixedly mounted on the front of the crushing box (100); an oil outlet of the hydraulic cylinder (651) is fixedly connected to an oil pipe (652); a connecting ring (653) is rotatably connected to the top of the vertebral body (623); a hydraulic chamber (654) is provided inside the vertebral body (623); the other end of the oil pipe (652) passes through the secondary crushing box (130) and is fixedly connected to the connecting ring (653); the oil pipe (652) The interior of the cone head (652) is connected to the interior of the hydraulic chamber (654); a push rod (655) is integrally formed on the top of the cone head (622); the top of the push rod (655) extends to the interior of the hydraulic chamber (654) and is in close contact with the inner wall of the hydraulic chamber (654); the top of the cone head (622) is conical; the bottom of the cone body (623) matches the top of the cone head (622); and the bottom of the cone body (623) and the top of the cone head (622) are both smoothly arranged.

7. The crushing system for producing cement from solid waste based on multi-stage crushing according to claim 1, characterized in that: A vertical plate (770) fixed to the inner wall of the solid waste feeding port (200) is provided on the opposite side of the two driving rollers (720); a cleaning roller (771) is rotatably connected to the inner side of one of the vertical plates (770); a fourth driving motor (772) is fixedly mounted on the top of the crushing box (100); an output shaft of the fourth driving motor (772) passes through the crushing box (100) and is fixedly connected to the cleaning roller (771); and the cleaning roller (771) rotates in the opposite direction to the adjacent driving roller (720).

8. The crushing system for producing cement from solid waste based on multi-stage crushing according to claim 1, characterized in that: The taper ratio of the fixed cone (610) is greater than the taper ratio of the dynamic cone (620).

9. The crushing system for producing cement from solid waste based on multi-stage crushing according to claim 4, characterized in that: The inner walls of the ventilation cavities (150) in the primary crushing box (120), the secondary crushing box (130), the material drop box (140) and the bottom box (160) are all fixedly connected with staggered dust shields (170), and electric heating pipes (180) are installed inside the dust shields (170). The temperature of the electric heating pipes (180) in the ventilation cavities (150) in the primary crushing box (120), the secondary crushing box (130), the material drop box (140) and the bottom box (160) gradually increases from bottom to top, and a strip-shaped through hole is provided on one side where the dust shield (170) is connected to the inner wall of the ventilation cavity (150).

10. The crushing system for producing cement from solid waste based on multi-stage crushing according to claim 7, characterized in that: A light scraper (773) is inserted into the front of the crushing box (100); the light scraper (773) is inserted into the inner side of the front vertical plate (770) and contacts the cleaning roller (771); a notch for dust discharge and insertion of the light scraper (773) is provided on the front vertical plate (770).

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