Decoration garbage primary screening equipment with disc spiral screen

Abstract

The invention provides decoration garbage primary screening equipment with a disc spiral screen. A disc-shaped screening part, a spiral screening part and a material conveying fan part are all arranged on a main frame part; decoration waste raw materials enter the feeding end of the dish-shaped screening part through a feeding hopper of the main frame part. The dish-shaped screening part allows part of materials to fall into a first discharging hopper of the main frame part from gaps between dish-shaped shafts of the dish-shaped screening part. Materials output from the discharging end of the dish-shaped screening part enter the feeding end of the spiral screening part. The spiral screening part allows part of materials to fall into the second discharging hopper from gaps between spiral shafts of the spiral screening part; a spiral shifting piece on a spiral shaft of the spiral screening part can push part of materials to a third discharging hopper and a fourth discharging hopper of the main frame part. And the material conveying fan part is arranged above the spiral screening part. In the production process, the particle size of screened heavy material particles can be controlled by adjusting the distance between the dish-shaped shaft and the spiral shaft according to different requirements of the material particles.

Description

Technical Field

[0001] This invention relates to the field of waste treatment equipment technology, specifically to a primary screening device for construction waste equipped with a disc screw screen. Background Technology

[0002] Construction waste has a complex composition, including fine, medium, and large aggregates, as well as lightweight materials such as foam, plastics, and wood chips. Direct disposal not only wastes resources but also pollutes the environment. Therefore, screening equipment is necessary for sorting, recycling, and reuse. Existing construction waste screening equipment generally suffers from the following technical problems: First, the screening structure is simple, mostly designed for single-pass screening, making it difficult to achieve graded separation of materials of different particle sizes and lightweight materials. Screening accuracy is low and cannot meet the needs of subsequent recycling. Second, the equipment has poor sealing, easily generating large amounts of dust during screening, which disperses into the air and causes environmental pollution, failing to meet environmental emission requirements. Third, the connection methods between various screening components, transmission components, and the frame are unreasonable. Either fixed welding makes disassembly and maintenance difficult, or insufficient connection stability affects the reliability of equipment operation. Furthermore, the overall structure is bulky, making hoisting, transportation, and on-site installation inconvenient. Fourth, the separation efficiency of lightweight materials is low. Most equipment lacks a targeted suction structure for lightweight materials, leading to the mixing of lightweight materials with solid particles during discharge, affecting the screening effect.

[0003] To address the aforementioned technical problems, this invention provides a primary screening device for construction waste with a disc screen. By integrating a disc screening section, a spiral screening section, and a material conveying fan section, and with a reasonable connection structure and sealing design, it achieves multi-stage precise screening of construction waste and efficient separation of light materials. At the same time, it takes into account sealing performance, ease of disassembly and assembly, and environmental protection requirements, effectively overcoming the shortcomings of existing equipment. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the purpose of this invention is to provide a primary screening device for construction waste with a disc screw screen.

[0005] According to the present invention, a primary screening device for construction waste with a disc screen is provided, comprising: a main frame, a disc screen, a spiral screen, and a material conveying fan. The disc-shaped screening section, the spiral screening section, and the material conveying fan section are all mounted on the main frame section; Construction waste material enters the feed end of the disc screen section through the feed hopper of the main frame section; the disc screen section allows some material to fall into the first discharge hopper of the main frame section through the gap between its disc shafts; The material output from the discharge end of the disc screen section enters the feed end of the spiral screen section; the spiral screen section allows some material to fall into the second discharge hopper through the gap between its spiral shafts; The spiral blades on the spiral shaft of the spiral screening section can push part of the material to the third and fourth discharge hoppers of the main frame section; The material conveying fan is located above the spiral screen section and can suck up part of the material on the spiral screen section through the suction port and discharge it through the material output pipe.

[0006] Preferably, the main frame includes: support legs, main frame, feed hopper, disc screen reducer, spiral screen reducer, main frame cover plate, first discharge hopper, second discharge hopper, third discharge hopper and fourth discharge hopper; The main frame is mounted on the support legs; the feed hopper, the disc screen reducer, the spiral screen reducer, the main frame cover plate, the first discharge hopper, the second discharge hopper, the third discharge hopper, and the fourth discharge hopper are mounted on the main frame; The disc-shaped screening section and the spiral screening section are mounted on the main frame, and the feed hopper is provided corresponding to the feed end of the disc-shaped screening section; The disc screen reducer is driven by the disc screen section, and the spiral screen section reducer is driven by the spiral screen section. The main frame cover plate is located above the disc-shaped screening section and the spiral screening section; The first discharge hopper is located below the disc-shaped screening section; the second discharge hopper is located below the spiral screening section. The fourth discharge hopper is located at the discharge end of the spiral screen section; the third discharge hopper is located at one end of the spiral shaft of the spiral screen section.

[0007] Preferably, there are two disc screen reducers, namely a first disc screen reducer and a second disc screen reducer. The spiral screen section reducer is configured in two parts, namely a first spiral screen section reducer and a second spiral screen section reducer; The support legs are configured as three, namely the first support leg, the second support leg, and the third support leg.

[0008] Preferably, the disc-shaped screening section includes: a first sprocket, a first chain, a first bearing housing, a passive disc-shaped shaft, a second bearing housing, and a driving disc-shaped shaft; The two ends of the passive disc shaft are rotatably mounted on the main frame via a first bearing seat and a second bearing seat, respectively. The two ends of the active disc shaft are rotatably mounted on the main frame via a first bearing seat and a second bearing seat, respectively. The passive disc shaft and the active disc shaft are connected by the first sprocket and the first chain; The active disc shaft is driven and connected to the disc screen reducer of the main frame.

[0009] Preferably, the passive disc shafts are configured to be six, and the active disc shafts are configured to be two; The three passive disc-shaped shafts and one active disc-shaped shaft constitute a disc-shaped screen group, and two disc-shaped screen groups are arranged side by side; In the same disc-shaped screen group, two adjacent passive disc-shaped shafts are connected by the first sprocket and the first chain.

[0010] Preferably, the spiral screening section includes: a first bearing chamber, a bearing chamber fixing seat, a second bearing chamber, a second sprocket, a second chain, a coupling, a driven spiral shaft, and a driven spiral shaft; The bearing housing mounting base is mounted on the main frame portion, and the first bearing housing and the second bearing housing are mounted on the bearing housing mounting base; The passive spiral shaft and the active spiral shaft are mounted on the bearing housing mounting base via the first bearing housing and the second bearing housing; The passive spiral shaft and the active spiral shaft are connected by the second sprocket and the second chain; The drive screw shaft is driven by the reducer of the screw screening section of the main frame via the coupling.

[0011] Preferably, there are four passive spiral shafts and one active spiral shaft. The two adjacent passive spiral shafts are connected by the second sprocket and the second chain.

[0012] Preferably, the material conveying fan unit includes: a fan reducer, a fan shaft, fan blades, an air inlet, a material output pipe, fan mounting legs, and a fan housing; The fan housing is mounted on the main frame via the fan fixing legs, and the fan housing is located above the spiral screening section; The air intake and the material output pipe are connected to the inner cavity of the fan housing; The fan speed reducer is driven to the fan blades via the fan blade shaft, and the fan blades are located inside the fan housing.

[0013] Preferably, the material conveying fan unit further includes: a bearing housing, a reducer end coupling, and a fan blade shaft coupling; The bearing housing is disposed on the fan casing, and the fan blade shaft is rotatably disposed on the fan casing through the bearing housing; The fan speed reducer is connected to the fan blade shaft via the speed reducer end coupling and the fan blade shaft coupling.

[0014] Preferably, the material conveying fan unit further includes: a fan blade rotor and a tensioning sleeve; The fan blade rotor is connected to the lower end of the fan blade shaft and is fixed to the fan blade shaft by the tensioning sleeve; The fan blades are connected to the fan blade rotor.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention solves the problem of separating the slag from construction waste by adopting a disc-shaped screening structure in the disc-shaped screening section, and uses the rotation of the disc-shaped shaft to shake apart the materials that are stuck together in the construction waste, which is convenient for subsequent processing.

[0016] 2. This invention solves the problem of separating and classifying medium-sized aggregates, large-sized aggregates, and large lightweight materials contained in construction waste by adopting a spiral screening structure in the spiral screening section.

[0017] 3. This invention solves the problem of more thorough sorting of light materials in construction waste by adopting the aerodynamic structural principle of the material conveying fan unit during spiral screening.

[0018] 4. This invention solves the problems of excessive equipment, large site occupation, high power consumption, and high investment in traditional construction waste treatment by adopting a structure that combines a disc-shaped screening section, a spiral screening section, and a material conveying fan section.

[0019] 5. This invention solves the problems of equipment footprint, production cost, and installation convenience by adopting a structure that combines a disc-shaped screening section, a spiral screening section, and a material conveying fan section. Attached Figure Description

[0020] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A front view of a primary screening device for construction waste equipped with a disc screw screen; Figure 2 A top view of a primary screening device for construction waste equipped with a disc screw screen; Figure 3 This is a side view of a primary screening device for construction waste. Figure 4 Side view to highlight the disc screen section and the spiral screen section; Figure 5 A top view to highlight the disc screen section and the spiral screen section; Figure 6 A top view showing the disc-shaped sieve section; Figure 7 A schematic diagram showing the three-dimensional structure of the disc-shaped screening section; Figure 8 This is a top view of the spiral screening section; Figure 9 This is a schematic diagram of the three-dimensional structure of the spiral screening section; Figure 10 This is a side view of the material conveying fan unit; Figure 11 This is a cross-sectional schematic diagram of the material conveying fan section; Figure 12 This is a three-dimensional structural diagram of the material conveying fan section.

[0021] The diagram shows: Main frame section 100, feed hopper 101, main frame 102, first disc screen reducer 103, second disc screen reducer 104, first spiral screen reducer 105, main frame cover plate 106, second spiral screen reducer 107, first support leg 108, first discharge hopper 109, second discharge hopper 110, second support leg 111, third discharge hopper 112, fourth discharge hopper 113, third support leg 114; disc screen section 200, sprocket 201, chain 202, first bearing seat 203, driven disc shaft 204, second bearing seat 205, driving disc Shaft 206; Spiral screening section 300, first bearing chamber 301, bearing chamber fixing seat 302, second bearing chamber 303, second sprocket 304, second chain 305, coupling 306, passive spiral shaft 307, active spiral shaft 308; material conveying fan section 400, fan reducer 401, fan blade shaft 402, fan blade 403, air inlet 404, material output pipe 405, fan fixing leg 406, fan housing 407, bearing chamber 408, reducer end coupling 409, fan blade shaft coupling 410, fan blade rotor 411, tensioning sleeve 412. Detailed Implementation

[0022] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the scope of protection of the present invention.

[0023] Example 1 like Figures 1 to 12As shown, this embodiment provides a primary screening device for construction waste with a disc screen, including: a main frame 100, a disc screen 200, a spiral screen 300, and a material conveying fan 400; the disc screen 200, the spiral screen 300, and the material conveying fan 400 are all mounted on the main frame 100; the construction waste raw material enters the feed end of the disc screen 200 through the feed hopper 101 of the main frame 100; the disc screen 200 allows some material to fall into the first discharge hopper 109 of the main frame 100 through the gap between its disc shafts; Material output from the discharge end of the disc screen section 200 enters the feed end of the spiral screen section 300; the spiral screen section 300 allows some material to fall into the second discharge hopper 110 through the gap between its spiral shafts; the spiral blades on the spiral shaft of the spiral screen section 300 can push some material to the third discharge hopper 112 and the fourth discharge hopper 113 of the main frame section 100; the material conveying fan section 400 is located above the spiral screen section 300 and can suck up some material on the spiral screen section 300 through the suction port 404 and discharge it through the material output pipe 405.

[0024] The main frame section 100 includes: support legs, a main frame 102, a feed hopper 101, a disc screen reducer, a spiral screen reducer, a main frame cover plate 106, a first discharge hopper 109, a second discharge hopper 110, a third discharge hopper 112, and a fourth discharge hopper 113; the main frame 102 is mounted on the support legs; the feed hopper 101, the disc screen reducer, the spiral screen reducer, the main frame cover plate 106, the first discharge hopper 109, the second discharge hopper 110, the third discharge hopper 112, and the fourth discharge hopper 113 are mounted on the main frame 102; the disc screen section 200 and the spiral screen section 300 are mounted on... On the main frame 102, the feed hopper 101 is provided corresponding to the feed end of the disc screen section 200; the disc screen section reducer is driven and connected to the disc screen section 200, and the spiral screen section reducer is driven and connected to the spiral screen section 300; the main frame cover plate 106 is located above the disc screen section 200 and the spiral screen section 300; the first discharge hopper 109 is located below the disc screen section 200; the second discharge hopper 110 is located below the spiral screen section 300; the fourth discharge hopper 113 is located at the discharge end of the spiral screen section 300; and the third discharge hopper 112 is located at one end of the spiral shaft of the spiral screen section 300. The disc screen section has two reducers, namely the first disc screen section reducer 103 and the second disc screen section reducer 104; the spiral screen section has two reducers, namely the first spiral screen section reducer 105 and the second spiral screen section reducer 107; and the support legs have three, namely the first support leg 108, the second support leg 111 and the third support leg 114.

[0025] The disc screening section 200 includes: a first sprocket 201, a first chain 202, a first bearing seat 203, a passive disc shaft 204, a second bearing seat 205, and a driving disc shaft 206; the two ends of the passive disc shaft 204 are rotatably mounted on the main frame section 100 via a first bearing seat 203 and a second bearing seat 205, respectively; the two ends of the driving disc shaft 206 are rotatably mounted on the main frame section 100 via a first bearing seat 203 and a second bearing seat 205, respectively; the passive disc shaft 204 and the driving disc shaft 206 are connected by the first sprocket 201 and the first chain 202; the driving disc shaft 206 is driven by the disc screening section reducer of the main frame section 100. There are six passive disc shafts 204 and two active disc shafts 206; three passive disc shafts 204 and one active disc shaft 206 constitute a disc screen group, and two disc screen groups are arranged side by side; in the same disc screen group, two adjacent passive disc shafts 204 are connected by a first sprocket 201 and a first chain 202.

[0026] The spiral screening section 300 includes: a first bearing chamber 301, a bearing chamber mounting base 302, a second bearing chamber 303, a second sprocket 304, a second chain 305, a coupling 306, a driven spiral shaft 307, and a driven spiral shaft 308. The bearing chamber mounting base 302 is mounted on the main frame section 100, and the first bearing chamber 301 and the second bearing chamber 303 are mounted on the bearing chamber mounting base 302. The driven spiral shaft 307 and the driven spiral shaft 308 are mounted on the bearing chamber mounting base 302 via the first bearing chamber 301 and the second bearing chamber 303. The driven spiral shaft 307 and the driven spiral shaft 308 are connected by the second sprocket 304 and the second chain 305. The driven spiral shaft 308 is driven by the spiral screening section reducer of the main frame section 200 via the coupling 306. There are four driven spiral shafts 307 and one driven spiral shaft 308. Adjacent driven spiral shafts 307 are connected by the second sprocket 304 and the second chain 305.

[0027] The material conveying fan unit 400 includes: a fan reducer 401, a fan shaft 402, a fan blade 403, an air inlet 404, a material output pipe 405, a fan mounting leg 406, and a fan housing 407. The fan housing 407 is mounted on the main frame unit 100 via the fan mounting leg 406 and is located above the spiral screening unit 300. The air inlet 404 and the material output pipe 405 are connected to the inner cavity of the fan housing 407. The fan reducer 401 is driven to the fan blade 403 via the fan shaft 402, and the fan blade 403 is located inside the fan housing 407.

[0028] The material conveying fan section 400 further includes: a bearing housing 408, a reducer end coupling 409, and a fan blade shaft coupling 410; the bearing housing 408 is mounted on the fan housing 407, and the fan blade shaft 402 is rotatably mounted on the fan housing 407 via the bearing housing 408; the fan reducer 401 is connected to the fan blade shaft 402 via the reducer end coupling 409 and the fan blade shaft coupling 410. The material conveying fan section 400 also includes: a fan blade rotor 411 and a tensioning sleeve 412; the fan blade rotor 411 is connected to the lower end of the fan blade shaft 402 and is fixed to the fan blade shaft 402 via the tensioning sleeve 412; the fan blade 403 is connected to the fan blade rotor 411.

[0029] This embodiment of the construction waste primary screening equipment with a disc screen utilizes the coordinated operation of the main frame 100, disc screen section 200, spiral screen section 300, and material conveying fan section 400 to achieve graded primary screening and separation of light materials from construction waste. The overall process is smooth and the screening is precise. The specific working principle is as follows: Before starting the equipment, ensure that all components are properly assembled, the main frame cover 106 is closed to form a semi-enclosed environment, and the three support legs (first support leg 108, second support leg 111, and third support leg 114) firmly support the main frame 102 and all auxiliary components. The disc screen reducer (first disc screen reducer 103 and second disc screen reducer 104), the spiral screen reducer (first spiral screen reducer 105 and second spiral screen reducer 107), and the fan reducer 401 are all in a ready-to-start state.

[0030] After the equipment is started, each reducer operates synchronously. The first and second disc screen reducers 103 and 104 drive the active disc shaft 206 of the disc screening section 200 to rotate through the drive connection. Since the active disc shaft 206 and the passive disc shaft 204 are connected by the first sprocket 201 and the first chain 202, and the equipment adopts two sets of parallel disc screening groups (each set contains 1 active disc shaft 206 and 3 passive disc shafts 204), and the adjacent passive disc shafts 204 are also linked by sprockets and chains, the 8 disc shafts of the two sets of disc screening groups operate synchronously in the same direction, forming a stable disc screening channel. Meanwhile, the reducers 105 and 107 of the first and second spiral screening sections drive the active spiral shaft 308 of the spiral screening section 300 to rotate through the coupling 306. The active spiral shaft 308 drives the four passive spiral shafts 307 to rotate synchronously through the second sprocket 304 and the second chain 305, so that the spiral screening section 300 forms a continuous spiral conveying screening channel. The fan reducer 401 drives the fan shaft 402 to rotate through the reducer end coupling 409 and the fan blade shaft coupling 410. The fan shaft 402 drives the fan rotor 411 and the fan blade 403 to rotate at high speed through the tensioning sleeve 412, forming a negative pressure in the fan housing 407, so that the air inlet 404 generates a stable suction force.

[0031] Subsequently, the construction waste material is precisely conveyed through the feed hopper 101 of the main frame section 100 to the inlet end of the disc screen section 200, entering the screening channel formed by synchronously rotating disc shafts. During this process, fine aggregates with smaller particle sizes (usually referring to fine sand, cement fragments, etc. with a particle size of less than 5mm) can fall through the gaps between adjacent disc shafts and into the first discharge hopper 109 located below the disc screen section 200, completing the first-stage screening and separation, and are discharged from the first discharge hopper 109 for subsequent recycling. Medium and large aggregates and lightweight materials that cannot pass through the gaps between the disc shafts are discharged from the discharge end of the disc screen section 200 under the rolling pushing action of the disc shafts, and then enter the inlet end of the spiral screen section 300 for the second-stage screening process.

[0032] After the material enters the spiral screening section 300, it moves forward under the conveying action of the synchronously operating spiral shaft and spiral vanes. During this process, medium-sized aggregates with moderate particle size (usually referring to crushed stone, small stones, etc. with a particle size between 5mm and 20mm) can fall through the gaps between adjacent spiral shafts and into the second discharge hopper 110 located below the spiral screening section 300, completing the second-stage screening and separation, and are discharged from the second discharge hopper 110. The remaining material that cannot pass through the gaps between the spiral shafts (including large aggregates and light materials) continues to move under the continuous pushing of the spiral vanes: among them, large aggregates with larger particle size (usually referring to large bricks, concrete blocks, etc. with a particle size greater than 20mm) are pushed by the spiral vanes to the third discharge hopper 112 located at one end of the spiral shaft due to their greater weight, and are discharged from the third discharge hopper 112; while light materials such as foam, plastic, and wood chips, as well as some small impurities, are pushed by the spiral vanes to the discharge end of the spiral screening section 300, near the fourth discharge hopper 113.

[0033] Since the suction port 404 of the material conveying fan section 400 is located at the discharge end of the spiral screening section 300 and is under negative pressure, the light materials at the discharge end of the spiral screening section 300 are drawn into the fan housing 407 by the suction port 404, and then discharged through the material output pipe 405 connected to the inner cavity of the fan housing 407, thus achieving efficient separation of light materials and solid particles. The remaining small amount of impurities that are not drawn in falls into the fourth discharge hopper 113 located at the discharge end of the spiral screening section 300 and is discharged in a concentrated manner, completing the initial screening process of the entire construction waste.

[0034] Throughout the entire operation, the main frame cover plate 106 covers the disc screening section 200 and the spiral screening section 300, effectively sealing the screening area. With the precise assembly of each component, dust is prevented from escaping, meeting environmental protection requirements. Each section achieves stable drive through transmission structures such as reducers, sprockets, chains, and couplings, ensuring screening efficiency and separation accuracy. At the same time, all components are assembled on the main frame 102, resulting in a compact overall structure that facilitates operation and maintenance.

[0035] Example 2 Those skilled in the art can understand this embodiment as a more specific description of Embodiment 1.

[0036] like Figures 1 to 12 As shown, this embodiment provides a primary screening device for construction waste with a disc screen, consisting of a main frame 100, a disc screen section 200, a spiral screen section 300, and a material conveying fan section 400. All parts are interconnected and sealed with cover plates to prevent dust from escaping during operation, meeting environmental protection requirements. The entire device is easy to hoist, transport, install, disassemble, and maintain.

[0037] The main frame section 100 includes: a feed hopper 101, a main frame 102, a first disc screen reducer 103, a second disc screen reducer 104, a first spiral screen reducer 105, a main frame cover plate 106, a second spiral screen reducer 107, a first support leg 108, a first discharge hopper 109, a second discharge hopper 110, a second support leg 111, a third discharge hopper 112, a fourth discharge hopper 113, and a third support leg 114.

[0038] The main frame 100 serves as the framework for the entire equipment, connecting various components. The feed hopper 101 is the feed inlet and is fixed to the main frame 102 with screws. The first disc screen reducer 103 and the second disc screen reducer 104 are transmission components of the disc screen section 200, connected to the motor mount on the main frame 102 via bolted connections through fixing holes on the reducers, and connected to the disc screen section 200 via shaft links. The first spiral screen reducer 105 and the second spiral screen reducer 107 are transmission components of the spiral screen section 300, also connected to the motor mount on the main frame 102 via bolted connections through fixing holes on the reducers, and connected to the spiral screen section 300 via couplings. The main frame cover plate 106 is fixed to the main frame 102 by bolts, sealing the entire equipment and ensuring it operates in a closed environment to prevent dust from escaping during operation. The first support leg 108, the second support leg 111, and the third support leg 114 are all bolted to the main frame 102, providing support for the entire main frame 102. The first discharge hopper 109, serving as the discharge hopper of the disc-shaped screening section, is directly welded to the main frame 102. The second discharge hopper 110 and the third discharge hopper 112, serving as the discharge hoppers of the spiral screening section, are also directly welded to the main frame 102. The fourth discharge hopper 113, serving as the discharge hopper of the spiral screening section, is bolted to the main frame 102.

[0039] When the equipment is working, the construction waste material enters the disc screening section 200 through the feed hopper 101.

[0040] The disc-shaped screening unit 200 includes: a first sprocket 201, a first chain 202, a first bearing housing 203, a passive disc-shaped shaft 204, a second bearing housing 205, and a driving disc-shaped shaft 206.

[0041] The disc-shaped screening section 200 is placed at the front end of the main frame 102. The disc-shaped screening section 200 has a total of 8 disc-shaped shafts, including 6 passive disc-shaped shafts 204 and 2 active disc-shaped shafts 206. Each disc-shaped shaft is fixed to the main frame 102 by screws through connecting holes on the first bearing seat 203 and the second bearing seat 205. A first sprocket 201 is installed on the same side of the passive disc-shaped shafts 204 and the active disc-shaped shafts 206. The other ends of the two active disc-shaped shafts 206 are respectively connected to the first disc-shaped shafts 204 and 206. The screen reducer 103 and the second disc screen reducer 104 are connected. The eight spiral shafts are divided into two groups. Each active disc shaft 206 is driven by the second chain 202, which drives the three passive disc shafts 204. When the construction waste material enters the disc screen section 200, the fine aggregate in the material falls into the first discharge hopper 109 through the gap between each disc shaft and is discharged through the first discharge hopper 109. Other construction waste is sent into the spiral screen section 300 by the rolling of the disc shafts.

[0042] The spiral screen section 300 includes: a first bearing chamber 301, a bearing chamber fixing seat 302, a second bearing chamber 303, a second sprocket 304, a second chain 305, a coupling 306, a driven spiral shaft 307, and a driven spiral shaft 308.

[0043] The spiral screening section 300 is located at the end of the main frame 102. The spiral screening section 300 has a total of 12 spiral shafts, including 10 passive spiral shafts 307 and 2 active spiral shafts 308. Each spiral shaft is fixed to the bearing housing mounting base 302 via connecting holes on the first bearing housing 301 and the second bearing housing 303 using screws. The bearing housing mounting base 302 is also fixed to the main frame 102 using screws. A second sprocket 304 is installed on the same side of the passive spiral shafts 307 and the active spiral shafts 308. A coupling 306 is installed at the top of the active spiral shaft 308, connecting it to the first disc screen section reducer 103 and the second disc screen section reducer 104 respectively. The 12 spiral shafts are divided into two groups, each active spiral shaft... Shaft 308 drives five passive spiral shafts 307 via the second chain 305. When construction waste enters the spiral screening section 300, medium-sized aggregate particles fall into the second discharge hopper 110 through the gaps between each spiral shaft and are discharged through the second discharge hopper 110. Other construction waste materials are transported to the fourth discharge hopper 113 by the spiral blades through the rotation of the spiral shafts, and are discharged through the fourth discharge hopper 113. Due to their own weight, large aggregate particles in the construction waste are pushed to the third discharge hopper 112 by the spiral blades on the spiral shafts and are discharged through the third discharge hopper. Light materials in the construction waste are sucked out by the material conveying fan section 400 located above the main frame 102 and discharged through the material output pipe.

[0044] The material conveying fan unit 400 includes: a fan reducer 401, a fan shaft 402, a fan blade 403, an air inlet 404, a material output pipe 405, a fan fixed support leg 406, a fan housing 407, a bearing chamber 408, a reducer end coupling 409, a fan shaft coupling 410, a fan rotor 411, and a tensioning sleeve 412.

[0045] The material conveying fan unit 400 is placed above the end of the main frame 102. The fan housing 407 is bolted to the main frame 102 via fan mounting legs 406. A bearing housing 408 is bolted to the upper end of the fan housing 407. The fan blade shaft 402 is fixed to the main frame 102 via the bearing housing 408. The lower end of the fan blade shaft 402 is connected to the fan rotor 411, which is fixed to the fan blade shaft 402 via a tensioning sleeve 412. A fan shaft coupling 410 is connected to the upper end of the fan shaft 402. The fan reducer 401 is bolted to a reducer base on the fan housing 407. A reducer end coupling 409 is mounted on the shaft of the fan reducer 401, and the reducer end coupling 409 is bolted to the fan shaft coupling 410. The fan blades 403 are connected to the fan rotor 411 via a shaft connection. The suction port 404 is bolted to the fan housing 407. The material output pipe 405 is screwed to the fan housing 407. When the material conveying fan unit 400 is in operation, it is driven by the fan reducer 401, which drives the fan blades 403 on the fan rotor 411. The high-speed rotation generates air and suction, which draws the light materials from the construction waste on the spiral screening unit 300 into the fan housing 407 through the suction port 404, and then discharges them through the material output pipe 405.

[0046] Fine aggregates typically refer to particles with a diameter less than 5mm, such as fine sand and cement chips. Medium aggregates typically refer to particles with a diameter between 5mm and 20mm, such as crushed stone and small stones. Large aggregates typically refer to particles with a diameter greater than 20mm, such as large bricks and concrete blocks. Lightweight materials typically refer to foam, plastics, and wood chips.

[0047] The equipment in this embodiment is mainly used for pre-screening in the construction waste processing production line. The equipment is composed of disc screening, spiral screening and aerodynamic principles. When processing construction waste, the equipment can pre-screen the construction waste to effectively classify the light materials and heavy materials aggregates in the construction waste, and provide effective crushing and screening conditions for the subsequent construction waste processing production line.

[0048] When processing construction waste, the equipment in this embodiment can classify the fine particulate heavy materials, medium particulate heavy materials, large particulate heavy materials, light materials, and large light materials contained in the construction waste according to different types.

[0049] In this embodiment, the equipment can control the particle size of the screened heavy material particles by adjusting the distance between the disc shaft and the spiral shaft according to different material particle requirements during the production process.

[0050] In the production process, this invention can control the particle size of the heavy material particles screened out by adjusting the distance between the disc shaft and the spiral shaft according to different material particle requirements.

[0051] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0052] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A primary screening device for construction waste equipped with a disc screw screen, characterized in that, include: The main frame section (100), the disc screening section (200), the spiral screening section (300), and the material conveying fan section (400); The disc-shaped screening section (200), the spiral screening section (300), and the material conveying fan section (400) are all mounted on the main frame section (100); Construction waste material enters the feed end of the disc screen section (200) through the feed hopper (101) of the main frame section (100); the disc screen section (200) allows some material to fall from the gap between its disc shafts into the first discharge hopper (109) of the main frame section (100); The material output from the discharge end of the disc screen (200) enters the feed end of the spiral screen (300); the spiral screen (300) allows some material to fall into the second discharge hopper (110) from the gap between its spiral shafts; The spiral blades on the spiral shaft of the spiral screen section (300) can push part of the material to the third discharge hopper (112) and the fourth discharge hopper (113) of the main frame section (100). The material conveying fan unit (400) is located above the spiral screen unit (300), and can suck up part of the material on the spiral screen unit (300) through the suction port (404) and discharge it through the material output pipe (405).

2. The primary screening equipment for construction waste with a disc screw screen according to claim 1, characterized in that, The main frame section (100) includes: support legs, main frame (102), feed hopper (101), disc screen reducer, spiral screen reducer, main frame cover plate (106), first discharge hopper (109), second discharge hopper (110), third discharge hopper (112) and fourth discharge hopper (113). The main frame (102) is mounted on the support legs; the feed hopper (101), the disc screen reducer, the spiral screen reducer, the main frame cover plate (106), the first discharge hopper (109), the second discharge hopper (110), the third discharge hopper (112), and the fourth discharge hopper (113) are mounted on the main frame (102); The disc-shaped screening section (200) and the spiral screening section (300) are mounted on the main frame (102), and the feed hopper (101) is mounted corresponding to the feed end of the disc-shaped screening section (200). The disc screen reducer is driven to drive the disc screen section (200), and the spiral screen section reducer is driven to drive the spiral screen section (300). The main frame cover plate (106) is located above the disc-shaped screening section (200) and the spiral screening section (300); The first discharge hopper (109) is located below the disc-shaped screening section (200); the second discharge hopper (110) is located below the spiral screening section (300); The fourth discharge hopper (113) is located at the discharge end of the spiral screen (300); the third discharge hopper (112) is located at one end of the spiral shaft of the spiral screen (300).

3. The primary screening equipment for construction waste with a disc screw screen according to claim 2, characterized in that, The disc screen reducer is configured in two parts, namely the first disc screen reducer (103) and the second disc screen reducer (104). The spiral screen section reducer is configured as two, namely the first spiral screen section reducer (105) and the second spiral screen section reducer (107). The support legs are configured as three, namely the first support leg (108), the second support leg (111), and the third support leg (114).

4. The primary screening equipment for construction waste with a disc screw screen according to claim 1, characterized in that, The disc-shaped screening unit (200) includes: a first sprocket (201), a first chain (202), a first bearing seat (203), a passive disc shaft (204), a second bearing seat (205), and an active disc shaft (206). The two ends of the passive disc shaft (204) are rotatably mounted on the main frame part (100) via a first bearing seat (203) and a second bearing seat (205), respectively; The two ends of the active disc shaft (206) are rotatably mounted on the main frame part (100) via a first bearing seat (203) and a second bearing seat (205), respectively; The passive disc shaft (204) and the active disc shaft (206) are connected by the first sprocket (201) and the first chain (202); The active disc shaft (206) is driven by the disc screen reducer of the main frame part (100).

5. The primary screening equipment for construction waste with a disc screw screen according to claim 4, characterized in that, The passive disc shafts (204) are configured to be six, and the active disc shafts (206) are configured to be two; The three passive disc shafts (204) and one active disc shaft (206) constitute a disc screen group, and two disc screen groups are arranged side by side; In the same disc screen group, two adjacent passive disc shafts (204) are connected by the first sprocket (201) and the first chain (202).

6. The primary screening equipment for construction waste with a disc screw screen according to claim 1, characterized in that, The spiral screen section (300) includes: a first bearing chamber (301), a bearing chamber fixing seat (302), a second bearing chamber (303), a second sprocket (304), a second chain (305), a coupling (306), a passive spiral shaft (307), and a driving spiral shaft (308). The bearing housing mounting base (302) is disposed on the main frame part (100), and the first bearing housing (301) and the second bearing housing (303) are disposed on the bearing housing mounting base (302); The passive helical shaft (307) and the active helical shaft (308) are mounted on the bearing housing mounting base (302) via the first bearing housing (301) and the second bearing housing (303); The passive helical shaft (307) and the active helical shaft (308) are connected by the second sprocket (304) and the second chain (305); The active spiral shaft (308) is driven to the reducer of the spiral screening section of the main frame part (200) via the coupling (306).

7. The primary screening equipment for construction waste with a disc screw screen according to claim 6, characterized in that, The passive spiral shafts (307) are configured as four, and the active spiral shafts (308) are configured as one; The two adjacent passive spiral shafts (307) are connected by the second sprocket (304) and the second chain (305).

8. The primary screening equipment for construction waste with a disc screw screen according to claim 1, characterized in that, The material conveying fan unit (400) includes: a fan reducer (401), a fan shaft (402), a fan blade (403), an air inlet (404), a material output pipe (405), a fan fixed support leg (406), and a fan housing (407). The fan housing (407) is mounted on the main frame (100) via the fan fixing leg (406), and the fan housing (407) is located above the spiral screen (300); The air intake (404) and the material output pipe (405) are connected to the inner cavity of the fan housing (407); The fan reducer (401) is driven to the fan blade (403) via the fan blade shaft (402), and the fan blade (403) is located inside the fan housing (407).

9. The primary screening equipment for construction waste with a disc screw screen according to claim 8, characterized in that, The material conveying fan unit (400) also includes: a bearing housing (408), a reducer end coupling (409), and a fan blade shaft coupling (410). The bearing housing (408) is disposed on the fan housing (407), and the fan blade shaft (402) is rotatably disposed on the fan housing (407) through the bearing housing (408); The fan reducer (401) is connected to the fan blade shaft (402) through the reducer end coupling (409) and the fan blade shaft coupling (410).

10. The primary screening equipment for construction waste with a disc screw screen according to claim 9, characterized in that, The material conveying fan unit (400) also includes: a fan blade rotor (411) and a tensioning sleeve (412). The fan blade rotor (411) is connected to the lower end of the fan blade shaft (402) and is fixed to the fan blade shaft (402) by the tensioning sleeve (412); The fan blade (403) is connected to the fan blade rotor (411).

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