Pretreatment equipment for using solid waste as road base

Abstract

The invention provides pretreatment equipment for using solid waste as a roadbase. The pretreatment equipment comprises a screening device, a filtering device, a stirring device, a feeding device and a hydrolysis pool. The screening device is used for screening solid waste raw materials, and the screening device conveys the solid waste raw materials with the preset particle size to a feeding port of the filtering device. The filtering device comprises a feeding part arranged below the feeding port, a separating roller arranged below the feeding part and a solid waste raw material receiving impurities filtered by the separating roller. A collection cavity and a ventilation cylinder are arranged on the outer side of the separation roller, the ventilation cylinder is connected with an external air pump, a stirring roller and a ventilation spraying part are arranged in the stirring device, the stirring roller is driven to rotate so that the filtered solid waste raw materials can be stirred, and the ventilation spraying part is used for conducting ventilation drying or spraying on the solid waste raw materials so as to adjust the water content of the solid waste raw materials. Impurities of solid waste raw materials are filtered, the purity is improved, the solid waste raw materials are fully stirred, the water content of the solid waste raw materials is adjusted, and the compaction effect of a road base is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste treatment equipment, and in particular to a solid waste pretreatment equipment for road base. Background Art

[0002] In the case of severe shortage of land and natural resources, scientific treatment and comprehensive utilization of industrial solid waste can achieve harmlessness and resource utilization of industrial solid waste, and the application of industrial solid waste in local road construction and reconstruction can realize the reuse of industrial solid waste. The existing technology mainly comprehensively utilizes large industrial solid wastes such as coal gangue, carbide slag, steel slag, and fly ash.

[0003] In the prior art, carbide slag, fly ash or cement is used as inorganic binder, and coal gangue or coal gangue mixed with crushed stone is used as aggregate to prepare high-grade highway subbase mixture. The coal gangue is graded and then different contents of carbide slag and fly ash are added to prepare the mixture.

[0004] Among them, the road performance of carbide slag stabilized materials is relatively close to that of lime stabilized materials, and can meet the technical requirements of fly ash stabilized base materials. In physical projects, due to the different hydrogeological factors in various regions, wet clay is also a common soil. In highway construction, due to its small particle size, high water content, large compression coefficient, and poor strength, it will encounter problems such as compaction difficulties and water loss shrinkage in actual applications. Adding carbide slag to clay can significantly improve its strength index, and can effectively improve the undesirable characteristics of clay itself, with significant engineering application effects.

[0005] In addition, carbide slag needs to undergo a hydrolysis reaction to generate Ca(OH)2 before mixing. Fly ash and coal gangue contain a large amount of volcanic ash components, which are prone to undergo volcanic ash reactions in an alkaline environment with suitable temperature and humidity to generate CSH and CAH, which are gel-like and fibrous and play a bonding role. At the same time, the carbonization of Ca(OH)2 and CO2 in the air also provides strength for the mixture.

[0006] In addition, the surface of coal gangue is rough and angular, and they are interlocked to form a skeleton. The gaps in the skeleton are filled with fine coal gangue particles, carbide slag, and fly ash. After rolling, the internal gaps of the mixture are greatly reduced. The interlocking of various material particles and the bonding of the binder make the mixture produce initial strength, which is low and unstable. When the moisture content is low, the base cannot be compacted due to the friction between the aggregates, which affects the rigidity and strength of the base, and is prone to settlement during the later traffic use; when the moisture content is too high, the pores between the aggregates are filled with water, which is not easy to compact and is prone to spring effect.

[0007] Therefore, carbide slag needs to be hydrolyzed before aggregate, and in order to achieve better results, the voids, compactness and moisture content of the aggregate need to be pre-treated in advance. In the prior art, the above pre-treatment operations are all implemented separately, with many transportation times and long transportation distances, which is not conducive to unified treatment and increases the pre-treatment cost of solid waste raw materials. Summary of the invention

[0008] In view of this, the present invention aims to propose a solid waste pretreatment device for road base layer, so as to automatically realize the hydrolysis and aggregate pretreatment process of solid waste raw materials and ensure the aggregate quality.

[0009] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0010] A solid waste pretreatment device for road base, comprising a screening device, a filtering device, a stirring device, a feeding device and a hydrolysis tank arranged on one side of the stirring device;

[0011] The screening device is used to screen the solid waste raw materials, and the screening device transports the solid waste raw materials with a preset particle size to the feed inlet of the filtering device;

[0012] The filtering device comprises a feeding part arranged below the feeding port, a separation roller arranged below the feeding part, and a receiving part for receiving the solid waste raw material after filtration;

[0013] A collecting cavity with a buckle cover is provided on the outside of the separation roller, and a ventilator is sleeved on the outside of the separation roller, and the ventilator is connected to an external air pump. When the separation roller is driven to pivot, the impurities are separated from the solid waste raw materials due to ventilation of the ventilator, and the impurities enter the collecting cavity;

[0014] The stirring device is provided with a stirring roller and a ventilation spraying part arranged above the stirring rod. The stirring rod is driven to rotate to stir the filtered solid waste raw materials. The ventilation spraying part is used to ventilate and dry or spray the solid waste raw materials to adjust the water content of the solid waste raw materials.

[0015] Furthermore, the screening device comprises an inclined feeding portion, and a screening portion elastically arranged above the feeding portion;

[0016] The screening part comprises a screening mesh, a first driving part for driving the screening mesh to vibrate, and a first funnel arranged on the screening mesh, wherein the first funnel is used for feeding, and a screening mesh is provided at the bottom of the screening mesh.

[0017] Furthermore, the feeding part includes a first frame arranged obliquely to the ground, transmission rollers pivotally connected to both ends of the first frame, a transmission belt sleeved on the two transmission rollers, and a second driving part for driving one of the transmission rollers;

[0018] The solid waste material that has been screened by the screening mesh falls onto the conveyor belt.

[0019] Further, the filtering device includes a second bracket, and a second funnel disposed above the second bracket;

[0020] The second funnel is arranged below the discharge end of the conveyor belt;

[0021] The second bracket is connected to a third driving unit, and the third driving unit drives the separation roller to rotate through a belt transmission;

[0022] The separating roller is pivotally connected to the second bracket.

[0023] Furthermore, the feeding part is arranged directly below the second funnel, and a pin is arranged at one end of the feeding part away from the separation roller, and two pins are respectively fixed on the second bracket and are pivotally connected to two sides of the feeding part;

[0024] The second bracket is pivotally connected to a support shaft, the support shaft is connected to a double-layer driving wheel, the power output end of the third driving unit is belt-driven with the double-layer driving wheel, and one end of the separation roller is belt-driven with the double-layer driving roller.

[0025] Furthermore, one end of the feeding part close to the separation roller is a discharge port, a rotating wheel is connected to the support shaft, a boss eccentric to the center of the rotating wheel is provided on the rotating wheel, a rod end bearing is provided below the feeding part, and the rod end bearing is connected to the boss through a connecting rod;

[0026] When the support shaft is driven to rotate, the connecting rod rotates along the center of the rotating wheel, so that the discharge port of the feeding part swings up and down to feed the material.

[0027] Furthermore, a fourth driving part is provided below the second bracket, the material receiving part is provided directly below the separation roller; arc grooves are provided at both ends of the material receiving part, a positioning pin penetrating into the arc groove is provided on the second bracket, a support is provided at the bottom end of the material receiving part, and a power output end of the fourth driving part is pivotally connected to the support;

[0028] The fourth driving part drives the material receiving part to slide along the positioning shaft, so that the material receiving part is switched between a material receiving state and a conveying state.

[0029] Furthermore, a detachably connected filter screen is provided in the collection cavity, and an air suction pump for absorbing dust is provided above the collection cavity.

[0030] Further, the stirring device includes a third bracket, a stirring tank disposed on the third bracket, a stirring roller pivotally connected to the stirring tank, and a fifth driving unit for driving the stirring roller to rotate;

[0031] A feed hopper close to the outlet of the filtering device is provided on one side of the stirring tank, an inlet connected to the feed hopper is provided on the stirring tank, and an outlet is provided at the bottom of the stirring tank;

[0032] The third bracket is also provided with a second funnel located below the outlet.

[0033] Furthermore, the mixing tank is provided with a sixth driving unit, and a power output end of the sixth driving unit is connected to a first baffle;

[0034] The sixth driving unit drives the first blocking door to open or close the entrance;

[0035] The stirring roller is provided with a plurality of stirring plates, and the stirring plates are in an arc shape;

[0036] The end of the stirring roller away from the fifth driving part is provided with a shaft sleeve pivotally connected to the stirring roller, the shaft sleeve is connected to a swing rod, and the swing rod is connected to a second stop door for opening or closing the outlet;

[0037] The third bracket is connected with a seventh driving unit, and a power output end of the seventh driving unit is connected to the shaft sleeve.

[0038] Compared with the prior art, the present invention has the following advantages:

[0039] The solid waste road base pretreatment equipment of the present invention first screens out solid waste raw materials of the required particle size by setting a screening device, and then filters the impurities such as dust from domestic or construction branches mixed in the solid waste raw materials by a filtering device to improve the purity of the solid waste raw materials. In addition, a stirring device is set to fully stir the filtered solid waste raw materials, and the water content of the solid waste raw materials is adjusted in combination with ventilation and spraying to meet the gap requirements when the solid waste is used as a road base, thereby improving the construction effect.

[0040] In addition, a hydrolysis tank is set on one side of the stirring device, which can be used to mix the carbide slag after hydrolysis with other sieved and filtered coal gangue, and add fly ash or cement required for aggregate, etc., to improve the uniformity of aggregate mixing, and there is no need to use a dedicated stirring equipment for stirring, reducing equipment investment. The feeding device at the tail end is also used to feed the material into the transport vehicle to realize automated production. The pretreatment equipment realizes the pretreatment process of automating the processing of various raw materials required for the road base, with a simple and centralized structure, small footprint, and can also be built outdoors to reduce transportation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0042] Figure 1 It is a schematic diagram of the three-dimensional structure of the road base pretreatment equipment for solid waste according to an embodiment of the present invention from a first perspective;

[0043] Figure 2 It is a schematic diagram of the three-dimensional structure of the road base pretreatment equipment for solid waste according to an embodiment of the present invention from a second viewing angle;

[0044] Figure 3 This is a front view structural schematic diagram of the solid waste used as road base pretreatment equipment according to an embodiment of the present invention;

[0045] Figure 4 It is a schematic diagram of the three-dimensional structure of the screening device according to an embodiment of the present invention;

[0046] Figure 5 A three-dimensional schematic diagram of a filtering device according to an embodiment of the present invention from a first viewing angle;

[0047] Figure 6 A schematic three-dimensional diagram of a filtering device according to an embodiment of the present invention from a second viewing angle;

[0048] Figure 7 It is a three-dimensional schematic diagram of the filtering device according to an embodiment of the present invention with part of the collecting cavity removed;

[0049] Figure 8 It is a schematic diagram of the three-dimensional structure of the stirring device according to an embodiment of the present invention;

[0050] Fig. 9 It is a schematic diagram of the three-dimensional structure of the stirring device without a top cover according to an embodiment of the present invention.

[0051] Description of reference numerals:

[0052] 1. Screening device; 2. Filtering device; 3. Stirring device; 4. Feeding device; 5. Hydrolysis tank; 6. Connecting plate;

[0053] 101. feeding section; 102. screening section;

[0054] 201, feeding part; 202, separation roller; 203, receiving part; 204, collecting chamber; 205, ventilator; 206, second bracket; 207, second funnel; 208, third driving part; 209, supporting shaft; 210, double-layer driving wheel; 211, rotating wheel; 212, boss; 213, rod end bearing; 214, connecting rod; 215, fourth driving part; 216, arc groove; 217, positioning pin; 218, support; 219, suction pump;

[0055] 301, stirring roller; 302, stirring tank; 303, top cover; 304, fifth driving unit; 305, feeding hopper; 306, sixth driving unit; 307, first stop door; 308, stirring plate; 309, shaft sleeve; 310, swing rod; 311, second stop door; 312, seventh driving unit; 313, third bracket;

[0056] 1011, first frame; 1012, transmission roller; 1013, transmission belt; 1014, second driving unit;

[0057] 1021. Screening mesh; 1022. First funnel. DETAILED DESCRIPTION

[0058] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0059] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0060] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installed", "connected", "connected", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0061] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0062] This embodiment relates to a pretreatment device for solid waste used as a road base, which includes a screening device 1, a filtering device 2, a stirring device 3, a feeding device 4, and a hydrolysis tank 5 arranged on one side of the stirring device 3. The screening device 1 is used to screen the solid waste raw materials, and the screening device 1 conveys the solid waste raw materials of a preset particle size to the feed port of the filtering device 2. The filtering device 2 includes a feeding part 201 arranged below the feed port, a separation roller 202 arranged below the feeding part 201, and the solid waste raw materials after the separation roller 202 filters the impurities.

[0063] Among them, a collection cavity 204 with a buckle cover is provided on the outside of the separation roller 202, and a ventilator 205 is sleeved on the outside of the separation roller 202. The ventilator 205 is connected to an external air pump. When the separation roller 202 is driven to pivot, impurities are separated from the solid waste raw materials due to ventilation of the ventilator 205, and the impurities enter the collection cavity 204. The stirring device 3 is provided with a stirring roller 301 and a ventilation spray part provided above the stirring rod. The stirring rod is driven to rotate to stir the filtered solid waste raw materials. The ventilation spray part is used to ventilate and dry or spray the solid waste raw materials to adjust the water content of the solid waste raw materials.

[0064] The solid waste road base pretreatment equipment described in this embodiment first screens out solid waste raw materials of the required particle size by setting up a screening device 1, and then filters the impurities such as dust from domestic or construction branches mixed in the solid waste raw materials by a filtering device 2 to improve the purity of the solid waste raw materials. In addition, a stirring device 3 is set to fully stir the filtered solid waste raw materials, and the water content of the solid waste raw materials is adjusted in combination with ventilation and spraying to meet the gap requirements when the solid waste is used as a road base, thereby improving the construction effect.

[0065] In addition, a hydrolysis tank 5 is provided on one side of the stirring device 3, and carbide slag can be hydrolyzed and mixed with other sieved and filtered coal gangue, and fly ash or cement required for aggregate, etc., to improve the uniformity of aggregate mixing, and there is no need to use a dedicated stirring device for stirring, thereby reducing equipment investment. The material is also fed into the transport vehicle through the feeding device 4 at the tail end. The pretreatment equipment realizes the pretreatment process of automating the processing of various raw materials required for the road base, has a simple and centralized structure, occupies a small area, and can also be built outdoors to reduce transportation costs.

[0066] Based on the above overall introduction, the exemplary structure of the solid waste used as road base pretreatment equipment of this embodiment is as follows: Figures 1 to 3 As shown, the screening device 1, the filtering device 2, the stirring device 3 and the feeding device 4 are sequentially connected and arranged on the ground. The hydrolysis tank 5 can be arranged near the stirring device 3 according to the needs of the on-site environment. The solid waste used as a road base pretreatment equipment can be installed in an indoor factory building, and the pretreated solid waste raw materials can be transported to the road construction site by a transport vehicle. It can also be installed outdoors and fixed with expansion bolts.

[0067] As a preferred implementation mode, Figure 4 As shown, the screening device 1 includes an inclined feeding part 101, and a screening part 102 elastically arranged above the feeding part 101. The screening part 102 includes a screening mesh body 1021, a first driving part for driving the screening mesh body 1021 to vibrate, and a first funnel 1022 arranged on the screening mesh body 1021, the first funnel 1022 is used for feeding, and the screening mesh body 1021 has a screening mesh at the bottom.

[0068] As Figure 4 As shown, the first driving unit of this embodiment adopts a vibration motor, and the screening mesh body 1021 adopts a box-type structure with an open upper end. The solid waste raw materials are transported from the outlet of the first funnel 1022 to the screening mesh body 1021. Through the downward inclined setting, when the solid waste raw materials fall into the screening mesh body 1021, the solid waste raw materials fall through the screening mesh body 1021. During the process of falling, the large particles of solid waste are screened out through the joint action of the screening mesh and the first driving unit, and the solid waste that meets the requirements falls onto the conveyor belt through the screening mesh.

[0069] Furthermore, if Figure 4 As shown, the feeding part 101 includes a first frame 1011 arranged obliquely to the ground, a transmission roller 1012 pivotally connected to both ends of the first frame 1011, a transmission belt 1013 sleeved on the two transmission rollers 1012, and a second driving part 1014 for driving one of the transmission rollers 1012, and the solid waste material screened by the screening mesh 1021 falls onto the transmission belt 1013. The second driving part 1014 adopts a driving motor, and a pulley is sleeved on one of the transmission rollers 1012. The second driving part 1014 is connected to one of the transmission rollers 1012 through a belt drive roller. When the second driving part 1014 is started, the transmission belt 1013 transports the screened solid waste material.

[0070] Preferably, if Figures 5 to 7 As shown, the filtering device 2 includes a second bracket 206, a second funnel 207 disposed above the second bracket 206, and the second funnel 207 is disposed below the discharge end of the conveyor belt 1013. The second bracket 206 is connected to a third driving unit 208, and the third driving unit 208 drives the separation roller 202 to rotate through a belt transmission, and the separation roller 202 is pivotally connected to the second bracket 206.

[0071] In terms of specific structure, Figures 5 to 7As shown, the second bracket 206 is fixed to the upper part of the first bracket through the connecting plate 6, and the second funnel 207 is used to receive the solid waste raw materials at the discharge end of the conveyor belt. The third driving part 208 adopts a private servo motor, which is used to drive the separation roller 202 to rotate. During the rotation of the separation roller 202, the solid waste raw materials are conveyed to the rotating separation roller 202 through the feeding part 201, and are connected to the external air pump through the vent 205, so that the impurities in the solid waste raw materials passing through can be blown up, and the light impurities are collected in the impurity collection cavity 204.

[0072] Further, as Figures 5 to 7 As shown, the feeding part 201 is arranged directly below the second funnel 207, and a pin is arranged at one end of the feeding part 201 away from the separation roller 202, and two pins are respectively fixed on the second bracket 206 and pivotally connected to both sides of the feeding part 201. A support shaft 209 is pivotally connected to the second bracket 206, and a double-layer driving wheel 210 is connected to the support shaft 209, a power output end of the third driving part 208 is belt-driven with the double-layer driving wheel 210, and one end of the separation roller 202 is belt-driven with the double-layer driving roller.

[0073] As Figure 5 As shown, the feeding part 201 of this embodiment is a dustpan structure, and the two sides of the tail end are connected with pins, and a deep groove ball bearing is provided between the pin and the feeding part 201. Figure 5 As shown, the third driving part 208 is arranged below the second bracket 206, and the support shaft 209 extends from one end to the middle of the second bracket 206. The double-layer driving wheel 210 is sleeved on the support shaft 209, and a deep groove ball bearing is also arranged between the support shaft 209 and the second bracket 206 to facilitate the flexible rotation of the support shaft 209. When the third driving part 208 drives the support shaft 209 to rotate, the double-layer driving roller drives the separation roller 202 to rotate, and at the same time drives the feeding part 201 to swing up and down.

[0074] Furthermore, if Figures 5 to 7 As shown, one end of the feeding part 201 close to the separation roller 202 is a discharge port, a rotating wheel 211 is connected to the support shaft 209, a boss 212 eccentric to the center of the rotating wheel 211 is provided on the rotating wheel 211, a rod end bearing 213 is provided below the feeding part 201, and the rod end bearing 213 is connected to the boss 212 through a connecting rod 214. When the support shaft 209 is driven to rotate, the connecting rod 214 rotates along the center of the rotating wheel 211, so that the discharge port of the feeding part 201 swings up and down to feed the material.

[0075] In addition, if Figures 5 to 7As shown, a fourth driving part 215 is provided below the second bracket 206, and a receiving part 203 for receiving materials is provided below the separation roller 202; arc grooves 216 are provided at both ends of the receiving part 203, and a positioning pin 217 penetrating into the arc groove 216 is provided on the second bracket 206, and a support 218 is provided at the bottom end of the receiving part 203, and the power output end of the fourth driving part 215 is pivotally connected with the support 218. The fourth driving part 215 drives the receiving part 203 to slide along the positioning shaft so that the receiving part 203 is switched between the receiving state and the conveying state. The fourth driving part 215 adopts a telescopic cylinder. One end of the positioning pin 217 is fixed on the bracket, and the other end passes through the arc grooves 216 at both ends of the receiving part 203.

[0076] By setting the arc groove 216, the receiving part 203 can be horizontal or tilted backward and downward when receiving materials, which is beneficial to receiving materials. When the receiving part 203 needs to unload materials, the fourth driving part 215 drives the tail end of the receiving part 203 to tilt upward, so that the discharge port of the receiving part 203 tilts downward, thereby facilitating discharge.

[0077] In addition, a detachably connected filter screen is provided in the collection chamber 204, and an air suction pump 219 for absorbing dust is provided above the collection chamber 204. In the prior art, for example, plastics, domestic garbage, construction waste, etc. are mixed in coal gangue or carbide slag, and the filter screen can be provided to receive and collect such garbage after being blown up. The impurities on the filter screen can be replaced after a certain period of time. A frame is provided on the outside of the filter screen, which is similar to a drawer structure and inserted in the middle of the collection chamber 204. Dust or lighter construction waste can be adsorbed by the air suction pump 219.

[0078] In order to achieve the mixing effect of aggregates, such as Figures 8 to 9 As shown, the stirring device 3 includes a third bracket 313, a stirring tank 302 arranged on the third bracket 313, a stirring roller 301 pivotally connected to the stirring tank 302, and a fifth driving unit 304 for driving the stirring roller 301 to rotate. A feeding hopper 305 close to the outlet of the filtering device 2 is provided on one side of the stirring tank 302, an inlet connected to the feeding hopper 305 is provided on the stirring tank 302, and an outlet is provided at the lower part of the stirring tank 302. A second funnel 207 located below the outlet is also provided on the third bracket 313.

[0079] Still Figure 8 and Fig. 9 As shown, the fifth driving part 304 is a motor fixed at the bottom of the third bracket 313, which drives the stirring roller 301 to rotate through a belt drive. In order to achieve better results, the lower end of the stirring tank 302 of this embodiment is an arc structure, and the outlet is set at the center of the bottom to facilitate unloading.

[0080] Further, as Figure 8 and Fig. 9As shown, the stirring tank 302 is provided with a sixth driving unit 306, and the power output end of the sixth driving unit 306 is connected to the first baffle 307, and the sixth driving unit 306 drives the first baffle 307 to open or close the entrance. The stirring roller 301 is provided with a plurality of stirring plates 308, and the stirring plates 308 are arc-shaped. The sixth driving unit 306 adopts a telescopic cylinder and is connected above the entrance. The stirring tank 302 is also provided with a clamping strip extending in the height direction of the entrance, and the cross section of the clamping strip is L-shaped. The two clamping strips are relatively abutted on both sides of the first baffle 307, so that the first baffle 307 does not deviate during the up and down sliding process.

[0081] In order to achieve a better stirring effect, the arc opening of the stirring plate 308 is facing the feeding direction, and multiple stirring plates 308 are evenly spaced and extended along the axial direction of the stirring shaft, and multiple rows are arranged along the axial circumference of the stirring roller 301, so that the solid waste raw material particles entering the stirring tank 302 as a whole can be broken up, some of which are taken up and rotated, and some flow into the bottom through the gap between the two stirring plates 308.

[0082] And, still Figure 8 and Fig. 9 As shown, the end of the stirring roller 301 away from the fifth driving part 304 is provided with a sleeve 309 pivotally connected to itself, a swing rod 310 is connected to the sleeve 309, a second stopper 311 for opening or closing the outlet is connected to the swing rod 310, and a seventh driving part 312 is connected to the third bracket 313, and the power output end of the seventh driving part 312 is connected to the sleeve 309. The seventh driving part 312 adopts a rotary motor, and the sleeve 309 is sleeved on the end shaft of one end of the stirring rod, and the two are connected through a deep groove ball bearing.

[0083] The second baffle 311 is an arc plate that can cover the outlet. One end of the second baffle 311 is provided with a connecting column extending to one side of the rocker arm 310. Both ends of the rocker arm 310 are fixedly connected to the connecting column and the shaft sleeve 309 respectively. The seventh driving part 312 is fixed on the third bracket 313 through a Z-shaped seat.

[0084] In addition, Figure 8 and Fig. 9 As shown, a top cover 303 is provided above the stirring tank 302, and a stirring chamber is formed between the top cover 303 and the stirring tank 302. A suction pump for sucking away air and an air pump for inflating the stirring chamber are provided above the top cover 303. Gas circulation during the stirring process can help reduce the moisture content of the aggregate. In addition, a nozzle for spraying water into the stirring chamber is also provided on the top cover 303, and the nozzle is connected to an external water tank to increase the moisture content of the aggregate. A sensor for detecting the moisture content is also provided on the top cover 303, which is connected to the PLC through the signal of the sensor to adjust the moisture content of the aggregate in real time.

[0085] The aggregate of this embodiment is selected to have a ratio of carbide slag to fly ash of 1:2, 1:3, 1:4, that is, the fly ash content is 12%-32%; the coal gangue aggregate content is determined to be 65%-82% according to the content of carbide slag and fly ash. The air-dried moisture content of carbide slag and fly ash is obtained by drying method.

[0086] Specifically, the total content of the main components of natural graded gangue, SiO2, Al2O3 and Fe2O3, should not be less than 70%. The particles exceeding the maximum particle size should be removed by the screening device 1; the impurities such as tree roots, domestic and construction waste contained in the gangue and carbide slag used for roadbed filling are filtered by the filtering device 2, and the carbide slag should be sent to the hydrolysis tank 5 for hydrolysis and then sent to the filtering device 2 for filtering impurities. When the moisture content of the gangue is higher than the optimal moisture content by more than 2%, the suction pump and the air pump are started. When it is lower than the optimal moisture content by less than 2%, water should be sprinkled and the material should be stewed to control the moisture content within ±2% of the optimal moisture content.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A solid waste pretreatment device for road base, characterized in that: It comprises a screening device (1), a filtering device (2), a stirring device (3), a feeding device (4) and a hydrolysis tank (5) arranged on one side of the stirring device (3); The screening device (1) is used to screen the solid waste raw material, and the screening device (1) transports the solid waste raw material with a preset particle size to the feed inlet of the filtering device (2); The filtering device (2) comprises a feeding portion (201) arranged below the feeding port, a separation roller (202) arranged below the feeding portion (201), and a receiving portion (203) for receiving the solid waste raw material after filtration; A collecting cavity (204) with a buckle cover is provided on the outside of the separation roller (202), and a ventilator (205) is sleeved on the outside of the separation roller (202). The ventilator (205) is connected to an external air pump. When the separation roller (202) is driven to pivot, the impurities are separated from the solid waste raw materials due to ventilation of the ventilator (205), and the impurities enter the collecting cavity (204); The stirring device (3) is provided with a stirring roller (301) and a ventilation spraying portion arranged above the stirring rod. The stirring rod is driven to rotate to stir the filtered solid waste raw materials. The ventilation spraying portion is used to ventilate and dry or spray the solid waste raw materials to adjust the water content of the solid waste raw materials.

2. The solid waste used as road base pretreatment equipment according to claim 1, characterized in that: The screening device (1) comprises a tilted material feeding portion (101) and a screening portion (102) elastically arranged above the material feeding portion (101); The screening part (102) comprises a screening mesh (1021), a first driving part for driving the screening mesh (1021) to vibrate, and a first funnel (1022) arranged on the screening mesh (1021), wherein the first funnel (1022) is used for feeding, and a screening mesh is provided at the bottom of the screening mesh (1021).

3. The solid waste used as road base pretreatment equipment according to claim 2 is characterized by: The feeding part (101) comprises a first frame (1011) arranged obliquely to the ground, transmission rollers (1012) pivotally connected to two ends of the first frame (1011), a transmission belt (1013) sleeved on the two transmission rollers (1012), and a second driving part (1014) for driving the transmission rollers (1012); The solid waste material that has been screened by the screening mesh (1021) falls onto the conveyor belt (1013).

4. The solid waste used as road base pretreatment equipment according to claim 3 is characterized by: The filtering device (2) comprises a second support (206), and a second funnel (207) arranged above the second support (206); The second funnel (207) is arranged below the discharge end of the conveyor belt (1013); The second bracket (206) is connected to a third driving unit (208), and the third driving unit (208) drives the separation roller (202) to rotate through a belt transmission; The separation roller (202) is pivotally connected to the second bracket (206).

5. The solid waste used as road base pretreatment equipment according to claim 4, characterized in that: The feeding portion (201) is arranged directly below the second funnel (207); a pin is arranged at one end of the feeding portion (201) away from the separation roller (202); two pins are respectively fixed on the second bracket (206) and are pivotally connected to two sides of the feeding portion (201); The second bracket (206) is pivotally connected to a support shaft (209), and the support shaft (209) is connected to a double-layer driving wheel (210). The power output end of the third driving unit (208) is belt-driven to the double-layer driving wheel (210), and one end of the separation roller (202) is belt-driven to the double-layer driving roller.

6. The solid waste used as road base pretreatment equipment according to claim 5, characterized in that: One end of the feeding portion (201) close to the separation roller (202) is a discharge port, the support shaft (209) is connected to a rotating wheel (211), the rotating wheel (211) is provided with a boss (212) eccentric to the center of the rotating wheel (211), a rod end bearing (213) is provided below the feeding portion (201), and the rod end bearing (213) and the boss (212) are connected via a connecting rod (214); When the support shaft (209) is driven to rotate, the connecting rod (214) rotates along the center of the rotating wheel (211), so that the discharge port of the feeding part (201) swings up and down to feed the material.

7. The solid waste used as road base pretreatment equipment according to claim 5, characterized in that: A fourth driving part (215) is provided below the second bracket (206); the material receiving part (203) is provided directly below the separation roller (202); arc grooves (216) are provided at both ends of the material receiving part (203); a positioning pin (217) is provided on the second bracket (206) and penetrates into the arc groove (216); a support (218) is provided at the bottom end of the material receiving part (203); and a power output end of the fourth driving part (215) is pivotally connected to the support (218); The fourth driving part (215) drives the material receiving part (203) to slide along the positioning shaft, so that the material receiving part (203) is switched between a material receiving state and a conveying state.

8. The solid waste road base pretreatment equipment according to claim 5, characterized in that: A detachably connected filter screen is provided in the collection cavity (204), and an air suction pump (219) for absorbing dust is provided above the collection cavity (204).

9. The solid waste used as road base pretreatment equipment according to claim 5, characterized in that: The stirring device (3) comprises a third bracket (313), a stirring pot (302) arranged on the third bracket (313), a stirring roller (301) pivotally connected to the stirring pot (302), and a fifth driving part (304) for driving the stirring roller (301) to rotate; A feed hopper (305) close to the outlet of the filtering device (2) is provided on one side of the stirring tank (302), an inlet communicating with the feed hopper (305) is provided on the stirring tank (302), and an outlet is provided at the bottom of the stirring tank (302); The third bracket (313) is also provided with a second funnel (207) located below the outlet.

10. The solid waste used as road base pretreatment equipment according to claim 9, characterized in that: The stirring tank (302) is provided with a sixth driving unit (306), and a power output end of the sixth driving unit (306) is connected to a first baffle (307); The sixth driving unit (306) drives the first blocking door (307) to open or close the entrance; The stirring roller (301) is provided with a plurality of stirring plates (308), and the stirring plates (308) are arc-shaped; The end of the stirring roller (301) away from the fifth driving part (304) is provided with a shaft sleeve (309) pivotally connected to the shaft sleeve (309), the shaft sleeve (309) is connected to a swing rod (310), and the swing rod (310) is connected to a second stop door (311) for opening or closing the outlet; The third bracket (313) is connected to a seventh driving unit (312), and a power output end of the seventh driving unit (312) is connected to the shaft sleeve (309).

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