Pretreatment system for industrial hazardous waste

Abstract

The utility model relates to a pretreatment system for industrial hazardous waste, which comprises a hydraulic reciprocating feeder, a lifting climbing bucket machine, a vibrating feeder, a strong-impact crusher, a conveyor system and a cement kiln, the industrial hazardous waste is fed to the lifting climbing bucket machine through the hydraulic reciprocating feeder, and after the lifting climbing bucket machine lifts the industrial hazardous waste to the top, the vibrating feeder is fed to the strong-impact crusher through the conveyor system. The industrial hazardous waste is discharged to the vibrating feeder, is vibrated and loosened by the vibrating feeder and then is conveyed to the impact crusher, and the industrial hazardous waste is crushed by impact and then is conveyed to the cement kiln through the conveyor system. The conveying mode and the disposal efficiency of the solid hazardous waste are improved, mechanical automatic conveying of solid materials is achieved, and industrial continuous controllable production is achieved.

Description

Technical Field

[0001] The utility model relates to a pretreatment system for industrial hazardous wastes, belonging to the technical field of industrial hazardous waste treatment. Background Art

[0002] Hazardous waste (referred to as industrial hazardous waste) mainly has properties such as corrosiveness, explosiveness, flammability, reactivity, etc., which can seriously affect human health, such as carcinogenicity, teratogenicity, mutagenicity, infectiousness, irritation, toxicity, radioactivity, etc. With the development of industry, the number of hazardous wastes discharged in industrial production processes is increasing. If they are not properly and promptly disposed of, they will cause serious pollution and harm to the surrounding environment, resulting in more serious consequences.

[0003] At present, domestic hazardous waste disposal is mainly carried out by high-temperature incineration in professional incinerators, but the construction investment cost is high, and as the public's environmental awareness gradually increases, the site selection for hazardous waste incineration is becoming more and more difficult. The use of ultra-high temperatures in cement kilns to co-dispose of hazardous waste has been valued by the environmental protection community for many years. After years of practice in developed countries abroad, it has been proven that it has the characteristics of safety, environmental protection, and economy, and is one of the effective ways to dispose of hazardous waste. After years of technology introduction and research and development in China, the technical equipment for co-disposal has gradually become perfect and mature. Cement kilns co-dispose of waste with its advantages of low construction cost and easier site selection. However, how to form a complete industrial hazardous waste treatment system is still under exploration. Utility Model Content

[0004] In order to solve the above problems, the utility model discloses a pretreatment system for industrial hazardous waste, and its specific technical solution is as follows:

[0005] A pretreatment system for industrial hazardous waste, comprising a hydraulic reciprocating feeder, an elevating crawler, a vibrating feeder, an impact crusher, a conveyor system and a cement kiln, wherein the elevating crawler is arranged obliquely, with the bottom as a feeding end and the top as a discharging end, the hydraulic reciprocating feeder is arranged at the bottom of the elevating crawler for feeding the elevating crawler, the vibrating feeder is located vertically below the top of the elevating crawler to receive the discharging of the elevating crawler, the impact crusher is located at the discharging end of the vibrating feeder, a crusher discharging chute is arranged vertically below the discharging end of the impact crusher, and the discharging end of the crusher discharging chute is located at the feeding end of the belt conveyor;

[0006] The hazardous industrial waste is fed to the lifting crawler through a hydraulic reciprocating feeder. After the lifting crawler lifts the hazardous industrial waste to the top, it is unloaded to the vibrating feeder. After the hazardous industrial waste is vibrated and loosened by the vibrating feeder, it is transported to the impact crusher. After the hazardous industrial waste is crushed by the impact, it is transported to the cement kiln through the conveyor system.

[0007] Furthermore, the conveyor system includes a horizontal conveying belt conveyor and a vertical lifting bucket elevator. The discharge port of the bucket elevator is located above the cement kiln, and the industrial hazardous waste is conveyed to the feed hopper of the cement kiln through the discharge pipe.

[0008] Furthermore, the lifting crawler comprises a motor, a crawler and a crawling track. Two groups of pulleys are horizontally arranged on one side of the crawler facing the crawling track, one group is close to the upper part thereof, called the first group of pulleys, and the other group is close to the lower part thereof, called the second group of pulleys. Both the first group of pulleys and the second group of pulleys are located in the crawling track, and the wheel diameter of the first group of pulleys is smaller than the wheel diameter of the second group of pulleys.

[0009] The crawling track is provided with an arc-shaped blind end near the top, which deviates toward the bottom of the crawling track. The blind end is called a limit groove. The opening length of the limit groove is greater than the wheel diameter of the first group of pulleys and less than the wheel diameter of the second group of pulleys.

[0010] A reversing wheel is arranged on the top of the crawling track;

[0011] The crawling bucket is symmetrically provided with hanging ears on both horizontal sides, in which cables are tied or welded, and the cables pass around the reversing wheel and are connected to a reel arranged under the crawling walkway. The cables are wound around the reel, and the reel is connected to a motor drive, and the motor drives the reel to rotate and rewind.

[0012] Furthermore, the motor is a forward and reverse rotating motor.

[0013] Furthermore, when the crawler bucket is placed horizontally, the top surface is completely open, and the top has a horizontal section from the side close to the crawling path to the opposite side, then a transition section inclined downward, and finally a horizontal section.

[0014] The length of one side of the crawling bucket close to the crawling walkway is longer than the height of the opposite side thereof, and the opposite side is vertically arranged.

[0015] Furthermore, the inclination angle of the crawling track is greater than 50°.

[0016] The beneficial effects of the utility model are:

[0017] The utility model improves the transportation mode and disposal efficiency of solid hazardous waste and realizes mechanical automatic transportation of solid materials.

[0018] The utility model only needs to determine the feeding amount at the hydraulic reciprocating feeder and design the crawling speed of the crawling bucket machine, and the subsequent equipment can be continuously operated to realize continuous and controllable industrial production.

[0019] The lifting crawler bucket of the utility model is cleverly designed. It uses a crawling track and designs pulleys of different diameters so that the first set of pulleys can fall into the limiting groove and get stuck. The second set of pulleys has a diameter larger than the opening of the limiting groove and passes through the limiting groove and moves to the reversing wheel position to realize the dumping of the crawler bucket. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 This is a schematic diagram of the cement kiln structure of the utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the bucket elevator of the utility model.

[0023] Figure 4 This is a top view of the bucket elevator of the utility model.

[0024] List of reference numerals: 1—hydraulic reciprocating feeder, 2—lifting crawler bucket, 3—vibrating feeder, 4—impact crusher, 5—crusher unloading chute, 6—belt conveyor, 7—leg, 8—bucket elevator, 9—discharge pipe, 10—cement kiln, 11—cable, 12—first set of pulleys, 13—limiting groove, 14—second set of pulleys, 15—hanging ear, 16—reversing wheel, 17—reel, 18—motor, 19—climbing bucket, 110—crawling walkway. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific implementations. It should be understood that the following specific implementations are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0026] Combined with Figure 1 and 2 It can be seen that the pretreatment system of industrial hazardous waste includes a hydraulic reciprocating feeder 1, an elevating crawler 2, a vibrating feeder 3, an impact crusher 4, a conveyor system and a cement kiln 10. The elevating crawler 2 is tilted, with the bottom as the loading end and the top as the unloading end. The hydraulic reciprocating feeder 1 is arranged at the bottom of the elevating crawler 2 for feeding the elevating crawler 2. The vibrating feeder 3 is located vertically below the top of the elevating crawler 2 to receive the unloading of the elevating crawler 2. The impact crusher 4 is located at the discharging end of the vibrating feeder 3. A crusher unloading chute 5 is arranged vertically below the discharging end of the impact crusher 4. The discharging end of the crusher unloading chute 5 is located at the feeding end of the belt conveyor 6.

[0027] The working process of the utility model is as follows: the industrial hazardous waste is fed to the lifting crawler 2 via the hydraulic reciprocating feeder 1; after the lifting crawler 2 lifts the industrial hazardous waste to the top, it is fed to the vibrating feeder 3; after the industrial hazardous waste is vibrated and loosened by the vibrating feeder 3, it is transported to the impact crusher 4; after the industrial hazardous waste is impact crushed, it is transported to the cement kiln 10 via the conveyor system.

[0028] Since the height of the cement kiln 10 is very high, usually more than 3 meters, or even dozens of meters. The conveyor system includes a horizontal conveying belt conveyor 6 and a vertical lifting bucket elevator 8. The discharge port of the bucket elevator 8 is located above the cement kiln 10. The industrial hazardous waste is conveyed to the feed hopper of the cement kiln 10 through the discharge pipe 9. The pre-treated industrial hazardous waste is lifted into the lower hopper at the top of the cement kiln 10 by the vertically lifting bucket elevator 8. After being mixed with other cement components in the lower hopper, the industrial hazardous waste enters the cement kiln 10 for high-temperature calcination to finally form cement.

[0029] The specific structure of the lifting crawler 2 is introduced below:

[0030] Combination Figure 3 and 4 , the traveling direction of the lifting crawler 2 is to feed materials from low to high at an angle. The lifting crawler 2 includes a motor, a crawler and a crawler track. Two sets of pulleys are horizontally arranged on the side of the crawler facing the crawler track, one set is close to its upper part, called the first set of pulleys, and the other set is close to its lower part, called the second set of pulleys. Both the first set of pulleys and the second set of pulleys are located in the crawler track, and the wheel diameter of the first set of pulleys is smaller than the wheel diameter of the second set of pulleys. The crawler track is provided with an arc-shaped turning blind end near the top, deviating toward the bottom of the crawler track, and the blind end is called a limit groove, and the opening length of the limit groove is greater than the wheel diameter of the first set of pulleys and smaller than the wheel diameter of the second set of pulleys.

[0031] A reversing wheel is arranged on the top of the crawling track.

[0032] Hanging ears are symmetrically arranged on both horizontal sides of the crawling bucket, and cables are tied or welded in the hanging ears. The cables pass around the reversing wheel and are connected to a reel arranged under the crawling walkway. The cable is wound on the reel, and the reel is connected to a motor drive. The motor drives the reel to rotate and rewind and unwind.

[0033] The motor is a forward and reverse motor.

[0034] The lifting crawler 2 serves as a mechanism for intermittently feeding materials from low to high. The crawler sends the materials to the top for unloading one by one, then returns to the bottom for loading, and then moves to the top again for unloading, repeating the cycle.

[0035] The process of feeding with the crawler bucket is as follows: when the crawler bucket is at the bottom, during feeding, the crawler bucket 19 is at Figure 2At position A, the crawler 19 is open upwards, and the hydraulic reciprocating feeder 1 is located Figure 2 At position A', the hydraulic reciprocating feeder 1 dumps the material toward the crawler bucket 19. When the material is loaded, the hydraulic reciprocating feeder 1 moves from Figure 2 The position of A' in the middle is returned to the position of B'. The crawler 19 is moved from Figure 2 The first group of pulleys 12 is located at position A in the middle and moves upward along the crawling path 110. At this time, the motor 18 rotates and pulls the cable 11 to wind it onto the reel 17. When the first group of pulleys 12 slides to the top of the crawling path, it moves into the limit groove 13. Subsequently, the first group of pulleys 12 is stuck in the limit groove 13 and no longer moves. The second group of pulleys 14 continues to move upward under the pull of the cable 11 until the cable 11 pulls the crawling bucket 19 to the top of the crawling path 110, and the crawling bucket 19 flips over. Figure 2 At position B, all the materials in the bucket 19 are dumped out. At this time, the bucket 19 is stuck and the rope cannot be pulled. The motor 18 cannot be rotated. The stroke of the forward and reverse motor 18 is set, or a sensor is set to switch the forward and reverse motor 18. At this time, the forward and reverse motor 18 stops and the dwell time of the forward and reverse motor 18 is set. This dwell time is enough for the materials in the bucket 19 to be dumped. Then the motor 18 is reversed and the bucket 19 descends to its original position. Since the bucket 19 is usually made of steel and has a large size and a weight of more than 50 kilograms, and the crawling walkway 110 has a large inclination angle, it will automatically descend to its original position under the action of gravity after the rope is loosened. When the bucket 19 reaches Figure 2 After reaching position A, the motor 18 is stopped through stroke control or sensor recognition is set at A, and the hydraulic reciprocating feeder 1 recharges the crawler bucket 19, sets the dwelling time of the crawler bucket 19 at A, and works in a cycle in sequence.

[0036] The specific structure of the climbing bucket 19 is introduced below:

[0037] When the crawler bucket 19 is placed horizontally, the top surface is completely open, and the top has a horizontal section from the side close to the crawler track to the opposite side, then a transition section tilted downward, and finally a horizontal section. The length of the side of the crawler bucket close to the crawler track is longer than the height of the opposite side, and the opposite side is arranged vertically. The top surface of the crawler bucket is designed so that when loading, the opening is vertically upward, and when unloading, the opening is tilted downward at a larger angle, which is convenient for unloading, and the side in contact with the crawler track is larger, which is convenient for setting pulleys, and there is enough length at the top for tipping.

[0038] The inclination angle of the crawling path is greater than 50°, which is required for the crawler to slide back to its original position smoothly.

[0039] A plurality of legs 7 are provided below each mechanism of the utility model for support and fixation as required.

[0040] The term “connection” as used in this application may mean a direct connection between components or an indirect connection between components via other components.

[0041] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A pretreatment system for industrial hazardous waste, characterized in that: It includes a hydraulic reciprocating feeder, an elevating crawler, a vibrating feeder, an impact crusher, a conveyor system and a cement kiln. The elevating crawler is tilted, with the bottom as a loading end and the top as a unloading end. The hydraulic reciprocating feeder is arranged at the bottom of the elevating crawler for feeding the elevating crawler. The vibrating feeder is located vertically below the top of the elevating crawler to receive the unloading of the elevating crawler. The impact crusher is located at the discharging end of the vibrating feeder. A crusher unloading chute is arranged vertically below the unloading end of the impact crusher. The unloading end of the crusher unloading chute is located at the feeding end of the belt conveyor. The hazardous industrial waste is fed to the lifting crawler through a hydraulic reciprocating feeder. After the lifting crawler lifts the hazardous industrial waste to the top, it is unloaded to the vibrating feeder. After the hazardous industrial waste is vibrated and loosened by the vibrating feeder, it is transported to the impact crusher. After the hazardous industrial waste is crushed by the impact, it is transported to the cement kiln through the conveyor system.

2. The pretreatment system for industrial hazardous waste according to claim 1, characterized in that: The conveyor system includes a horizontal conveying belt conveyor and a vertical lifting bucket elevator. The discharge port of the bucket elevator is located above the cement kiln, and the industrial hazardous waste is conveyed to the feed hopper of the cement kiln through the discharge pipe.

3. The pretreatment system for industrial hazardous waste according to claim 1, characterized in that: The lifting crawler comprises a motor, a crawler and a crawler track. Two groups of pulleys are horizontally arranged on one side of the crawler facing the crawler track, one group is close to the upper part thereof, called the first group of pulleys, and the other group is close to the lower part thereof, called the second group of pulleys. Both the first group of pulleys and the second group of pulleys are located in the crawler track, and the wheel diameter of the first group of pulleys is smaller than the wheel diameter of the second group of pulleys. The crawling track is provided with an arc-shaped blind end near the top, which deviates toward the bottom of the crawling track. The blind end is called a limit groove. The opening length of the limit groove is greater than the wheel diameter of the first group of pulleys and less than the wheel diameter of the second group of pulleys. A reversing wheel is arranged on the top of the crawling track; The crawling bucket is symmetrically provided with hanging ears on both horizontal sides, in which cables are tied or welded, and the cables pass around the reversing wheel and are connected to a reel arranged under the crawling walkway. The cables are wound around the reel, and the reel is connected to a motor drive, and the motor drives the reel to rotate and rewind.

4. The pretreatment system for industrial hazardous waste according to claim 3, characterized in that: The motor is a forward and reverse motor.

5. The pretreatment system for industrial hazardous waste according to claim 1, characterized in that: When the crawler bucket is placed horizontally, the top surface is completely open, and the top has a horizontal section from the side close to the crawling path to the opposite side, then a transition section inclined downward, and finally a horizontal section. The length of one side of the crawling bucket close to the crawling walkway is longer than the height of the opposite side thereof, and the opposite side is vertically arranged.

6. The pretreatment system for industrial hazardous waste according to claim 3, characterized in that: The inclination angle of the crawling track is greater than 50°.

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