Concrete production and conveying device with self-cleaning function

Abstract

This utility model discloses a concrete production and conveying device with self-cleaning function, relating to the field of concrete conveying technology. It includes two sets of relatively distributed bases and a support platform fixed on them. A conveyor belt is provided inside the support platform, and a longitudinal guide groove is provided inside the base. A support is slidably disposed within the guide groove, and a telescopic rod is fixed to the top of the support. A horizontally arranged mounting cylinder is fixed to the top of the telescopic rod, and an air source pipeline is provided outside the mounting cylinder. Through a combined cleaning method of blowing with guide nozzles and scraping with a scraper, the concentrated high-speed airflow generated by the venturi nozzles first loosens and lifts surface dust, and then the hard alloy scraper thoroughly removes the adhering impurities. The two work together to ensure thorough cleaning. A trapezoidal concave adsorption area is provided inside the support platform, along with an external dust removal system. In actual operation, the blown dust is quickly sucked into the adsorption plate under negative pressure and collected by the external negative pressure mechanism, effectively preventing dust overflow.

Description

Technical Field

[0001] This utility model relates to the field of concrete conveying, and in particular to a concrete production and conveying equipment with self-cleaning function. Background Technology

[0002] In the concrete production process, belt conveyors are key equipment for transporting aggregates (sand and stone). After operation, a large amount of cement dust and fine aggregates remain on the surface and in the gaps of the conveyor belt. If these residues are not cleaned in time, they will harden and clump together, which will not only accelerate the wear of the conveyor belt and reduce its service life, but may also cause problems such as belt misalignment and idler roller jamming, affecting the production quality of subsequent batches.

[0003] Currently, conveyor belt cleaning mostly employs fixed scrapers or rotating brushes for dry scraping. This method easily generates a large amount of dust, polluting the working environment and endangering the health of operators. High-pressure water washing is also used, but it produces wastewater and mud, requiring supporting water treatment facilities, and the wet belts are prone to corrosion. In addition, existing cleaning devices are mostly fixed, making maintenance and replacement inconvenient, with limited cleaning effectiveness, and dust overflows during operation, lacking effective closed collection methods. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a concrete production and conveying device with self-cleaning function, thus solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a concrete production and conveying equipment with self-cleaning function, comprising two sets of bases distributed opposite to each other and a support platform fixed thereon, a conveyor belt is provided on the inner side of the support platform, a longitudinal guide groove is provided on the inner side of the base, a bracket is slidably disposed in the guide groove, a telescopic rod is fixed on the top of the bracket, a horizontally arranged mounting cylinder is fixed on the top of the telescopic rod, and an air source pipeline is provided outside the mounting cylinder. One side of the top of the mounting cylinder is fixed with a guide nozzle pointing to the lower surface of the conveyor belt, and the other side is fixed with a scraper that is higher than the guide nozzle. The inner surface of the support platform is trapezoidal and concave, and an adsorption plate with a matching negative pressure pipe is embedded in the lower inclined surface. The negative pressure pipe is connected to the external negative pressure mechanism. An installation cavity is opened on the front of the support platform, and an outer protective cover is movably connected inside the installation cavity.

[0006] As a further technical solution of this utility model, the bracket is slidably connected to the guide groove through a precision lead screw slide driven by a handwheel.

[0007] As a further technical solution of this utility model, the air outlet of the guide nozzle is a Venturi nozzle structure.

[0008] As a further technical solution of this utility model, the adsorption plate is a perforated steel plate.

[0009] As a further technical solution of this utility model, the mounting cylinder is connected to the external air source pipeline, and the adsorption plate is connected to the external negative pressure pipeline through quick-connect couplings.

[0010] As a further technical solution of this utility model, a pressure sensor is provided at the connection between the top of the telescopic rod and the mounting cylinder.

[0011] As a further technical solution of this utility model, the scraper is fixedly connected to the mounting cylinder by a bolt pressure plate, and its cutting edge is set as a carbide strip.

[0012] As a further technical solution of this utility model, the outer protective cover is an arc-shaped cover made of flexible plastic material. One end of the cover is connected to a set of support platforms by a shaft, and the other end is magnetically fixed to the front of another set of support platforms by a magnetic layer.

[0013] This utility model provides a concrete production and conveying device with self-cleaning function, which has the following advantages compared with the prior art: 1. This design is a concrete production and conveying equipment with self-cleaning function. It uses a composite cleaning method of blowing with a guide nozzle and scraping with a scraper. First, the concentrated high-speed airflow generated by the Venturi nozzle loosens and raises the surface dust, and then the hard alloy scraper thoroughly removes the adhering impurities. The two work together to ensure that there are no dead corners in the cleaning.

[0014] 2. This design provides a concrete production and conveying equipment with self-cleaning function. A trapezoidal concave adsorption area is set on the inner side of the support platform, and an external dust removal system is provided. In actual operation, the dust blown up is quickly sucked into the adsorption plate under negative pressure and collected by the external negative pressure mechanism, which effectively prevents dust from overflowing and greatly improves the working environment.

[0015] 3. This design provides a concrete production and conveying equipment with a self-cleaning function. By installing a pressure sensor at the top of the telescopic rod, the contact pressure between the scraper and the conveyor belt can be monitored in real time. This ensures the cleaning effect while preventing damage to the conveyor belt due to excessive pressure, thus extending the service life of the equipment.

[0016] 4. This design provides a concrete production and conveying equipment with a self-cleaning function. The cleaning mechanism (installation cylinder, guide nozzle, scraper) is connected to the air and electrical circuits through quick-connect connectors and can be moved as a whole by a screw slide driven by a handwheel, realizing a modular quick-change function, which greatly shortens maintenance time and downtime. The main wear part, the scraper, is fixed by bolt pressure plates and can be replaced individually, resulting in low maintenance costs.

[0017] 5. The concrete production and conveying equipment with self-cleaning function designed in this paper is equipped with an arc-shaped outer protective cover that can be stored in the installation cavity. It can be lowered to form physical isolation during cleaning operations to prevent accidents, and can be retracted after the operation is completed. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a concrete production and conveying equipment with self-cleaning function. Figure 2 A concrete production and conveying equipment with self-cleaning function Figure 1 Enlarged view of the structure at point A in the middle; Figure 3 A concrete production and conveying equipment with self-cleaning function Figure 1 Enlarged view of the structure at point B in the middle.

[0019] In the diagram: 1. Base; 2. Support platform; 3. Conveyor belt; 4. Inner side plate; 5. Telescopic rod; 6. Mounting cylinder; 7. Guide nozzle; 8. Scraper; 9. Guide groove; 10. Bracket; 11. Adsorption plate; 12. Pump body mechanism; 13. Mounting cavity; 14. Outer protective cover. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a technical solution for a concrete production and transmission equipment with self-cleaning function: it includes a base 1 and a support platform 2 that are fixedly connected at the upper and lower positions. The base 1 and the support platform 2 are matched and distributed in two sets. A longitudinally arranged conveyor belt 3 is fixedly connected to the inner side of the support platform 2. An inner side plate 4 located above the outer side of the conveyor belt 2 is movably connected to the upper inner side of the support platform 2. The inner surface of the base 1 is provided with a longitudinal guide groove 9. A bracket 10 is slidably embedded in the guide groove 9. A telescopic rod 5 is fixedly connected to the top of the bracket 11. A horizontally arranged mounting cylinder 6 is fixedly connected to the top of the telescopic rod 5. A guide nozzle 7 and a scraper 8 are fixedly connected to the top two sides of the mounting cylinder 6, respectively. An adsorption plate 11 is provided on the inner side of the support platform 2. An adsorption pipe connected to an external negative pressure mechanism is provided on the outside of the adsorption plate 11. A guide pipe connected to the pump body mechanism 12 is provided on the outside of the mounting cylinder 6. An installation cavity 13 is opened on the front of the support platform 2. An outer protective cover 14 is movably installed in the installation cavity 13. The pump body mechanism 12 is set as an air compressor and a matching air source treatment system. Quick-connect connectors are used to connect the mounting cylinder 6 and the guide pipe, and the adsorption plate 11 and the adsorption pipe.

[0022] like Figure 1-2 As shown, the base 1 is a three-sided frame-shaped base with the opening facing outwards. The support platform 2 is vertically arranged in a "Z" shape, and its bottom end is fixedly connected to the top end of the base 1 in an "L" shape. The inner surface of the support platform 2 is trapezoidally concave, and the adsorption plate 11 is located on the lower inclined surface of the trapezoidal concave position. At the same time, the adsorption plate 11 is located below both sides of the conveyor belt 3. The adsorption plate 11 is a perforated steel plate embedded in the inner surface of the support platform 2. The external negative pressure mechanism connected to it is a combination of a cyclone dust collector and a bag dust collector connected to a high-pressure centrifugal fan.

[0023] like Figure 3 As shown, the mounting cavity 13 is a rectangular chamber that is longitudinally opened inside the support platform 2. The upper and lower inner wall surfaces of the mounting cavity 13 are provided with sliding grooves corresponding to the outer protective cover 14. The outer protective cover 14 is an arc-shaped cover with a shaft vertically embedded at one end and a magnetic layer at the other end. The shaft is located inside the mounting cavity 13, and its upper and lower ends are slidably connected to the sliding grooves on the inner wall of the mounting cavity 13. The outer protective cover 14 is made of flexible plastic plate, with one end connected to a set of support platforms 2 by flipping through the shaft, and the other end connected to another set of support platforms 2 by magnetic attraction from the front.

[0024] like Figure 2 As shown, the guide groove 9 is located on the lower inner surface of the base 1. The guide groove 9 and the bracket 10 are slidably connected by a precision lead screw slide driven by a handwheel. The lead screw slide is set in the guide groove 9. The bracket 10 is vertically set in a guide "L" shape. The telescopic rod 5 is set as an electric telescopic rod. The mounting cylinder 6 and the guide nozzle 7 are connected. The guide nozzle 7 is set horizontally along one side of the top of the mounting cylinder 6, and the side profile of the guide nozzle 7 is set as a triangular protrusion. Its top air outlet is set as a Venturi nozzle structure. A pressure sensor is set at the connection between the top of the telescopic rod 5 and the mounting cylinder 6. The scraper 8 is set horizontally along the top of the mounting cylinder 6. Its height is higher than the height of the guide nozzle 7. The scraper 8 and the guide nozzle 7 are both located below the conveyor belt 3. The scraper 8 is fixedly connected to the mounting cylinder 6 by a bolt plate. The cutting edge of the scraper 8 is set as a carbide strip. The cutting edge shape is set at an angle.

[0025] All electrical components in this device (including but not limited to the drive motor of conveyor belt 3, telescopic rod 5, air control valve in pump body mechanism 12, fan in external negative pressure mechanism, and pressure sensor) are electrically connected to a control system based on existing technology. This control system can employ a PLC (Programmable Logic Controller) or microprocessor system well-known to those skilled in the art. Through preset programs or receiving external commands, it coordinates the orderly actions of each component according to the aforementioned working principle, thereby realizing the automatic operation and cleaning function of the equipment. Given that this control system is a direct application of existing publicly available technology, its specific hardware configuration and programming details will not be elaborated here.

[0026] The working principle of this utility model is as follows: When this device is in use, the external aggregate is first conveyed by the conveyor belt 2, and the inner side plate 4 guides the aggregate according to the adjustment angle. The location of this point is in the existing public technology, and will not be described in detail here. When the conveyor belt 3 needs to be cleaned after the conveying is completed, the telescopic rod 5 is activated, pushing the installation cylinder 6 to lift and adjust as a whole, so that the scraper 8 contacts the lower surface of the conveyor belt 3. The user pulls out the outer protective cover 14 from the installation cavity 13 and flips it over, so that the outer protective cover 14 covers and protects the front of the whole device. After the other end is flipped over, it forms a magnetic fixation with the corresponding support platform 2. Then, the conveyor belt 3 is started. As the conveyor belt 3 rotates, the scraper 8 scrapes away the impurities on its surface from its lower surface position. At the same time, the guide nozzle 7 blows out airflow to blow away the dust on the surface of the conveyor belt 3 before the scraper 8 performs the scraping operation. During this process, since the airflow is blown out from below the conveyor belt 3, it flows to the adsorption plates 11 on both sides after being blocked by the conveyor belt 3. In addition, the adsorption plates 11 are located in the trapezoidal concave position inside the support platform 2. Therefore, the adsorption plates 11 can effectively adsorb and clean the airflow with dust. During the dust removal operation, the inner side of the support platform 2 is trapezoidally concave, which can effectively guide the airflow to concentrate there, thereby facilitating the adsorption plate 11 to complete the adsorption and cleaning. After cleaning, the outer protective cover 14 is opened and the entire outer protective cover 14 is embedded into the installation cavity 13.

[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A concrete production and conveying device with self-cleaning function, comprising two sets of bases (1) distributed opposite to each other and a support platform (2) fixed thereon, wherein a conveyor belt (3) is provided on the inner side of the support platform (2), characterized in that: The base (1) has a longitudinal guide groove (9) on its inner side. The bracket (10) is slidably disposed in the guide groove (9). A telescopic rod (5) is fixed on the top of the bracket (10). A horizontally disposed mounting cylinder (6) is fixed on the top of the telescopic rod (5). An air source pipeline is provided on the outside of the mounting cylinder (6). The top of the mounting cylinder (6) is fixed with a guide nozzle (7) pointing to the lower surface of the conveyor belt (3) on one side, and a scraper (8) with a height higher than the guide nozzle (7) is fixed on the other side. The inner surface of the support platform (2) is trapezoidal and concave. An adsorption plate (11) with a matching negative pressure pipe is embedded in the lower inclined surface. The negative pressure pipe is connected to the external negative pressure mechanism. An installation cavity (13) is opened on the front of the support platform (2). An outer protective cover (14) is movably connected in the installation cavity (13).

2. The concrete production and conveying device with self-cleaning function according to claim 1, characterized in that: The bracket (10) is slidably connected to the guide groove (9) via a precision lead screw slide driven by a handwheel.

3. The concrete production and transfer apparatus with self-cleaning function according to claim 1, characterized in that: The air outlet of the guide nozzle (7) is a Venturi nozzle structure.

4. The concrete production and transfer apparatus with self-cleaning function according to claim 1, characterized in that: The adsorption plate (11) is a perforated steel plate.

5. The concrete production and transfer apparatus with self-cleaning function according to claim 1, characterized in that: The mounting cylinder (6) is connected to the external air source pipeline, and the adsorption plate (11) is connected to the external negative pressure pipeline via quick-connect couplings.

6. The concrete production and transfer apparatus with self-cleaning function according to claim 1, characterized in that: A pressure sensor is provided at the connection between the top of the telescopic rod (5) and the mounting cylinder (6).

7. The concrete production and transfer apparatus with self-cleaning function according to claim 1, characterized in that: The scraper (8) is fixedly connected to the mounting cylinder (6) by a bolt plate, and its cutting edge is a carbide strip.

8. The concrete production and transfer apparatus with self-cleaning function according to claim 1, characterized in that: The outer protective cover (14) is an arc-shaped cover made of flexible plastic material. One end of it is connected to a set of support platforms (2) by a shaft, and the other end is magnetically fixed to another set of support platforms (2) on the front by a magnetic layer.

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