Feeding primary mixing mechanism for preparing concrete

Abstract

The utility model discloses a feed primary mixing mechanism for preparing concrete, which comprises a frame, and a conveying belt, a vibrating screen, a crushing component, a spraying component and an auger conveyor which are arranged on the frame, and the conveying belt is used for conveying mixed materials; the vibrating screen is obliquely arranged at the tail end of the conveying belt and used for screening the mixed materials conveyed by the conveying belt, and a second discharging channel is arranged at the lower end of the vibrating screen. A feed port of the crushing assembly is arranged below the vibrating screen and is used for crushing materials filtered by the vibrating screen; the spraying assembly is arranged below the discharge hole of the crushing assembly and is used for spraying water to the crushed materials; a first discharging channel is arranged at the lower end of the spraying assembly; the feeding end of the auger conveyor communicates with the first discharging channel and the second discharging channel and is used for conveying materials screened through the vibrating screen and smashed through the smashing assembly. According to the utility model, aggregate and admixture materials are repeatedly stirred and mixed by the three groups of processing mechanisms, so that various materials are fully mixed and contacted, and the mixing efficiency of the materials is improved.

Description

Technical Field

[0001] The utility model relates to the field of concrete preparation, in particular to a feed initial mixing mechanism for preparing concrete. Background Art

[0002] Concrete refers to a raw material for construction made by mixing cement, aggregates, admixtures and water. The concrete obtained by mixing is widely used in civil engineering. Aggregates refer to crushed stone particles or sand and gravel, which play a role in the skeleton and filling of concrete. Admixtures usually use materials such as fly ash and slag, which are mainly used to improve the strength, durability and crack resistance of concrete.

[0003] In the actual production process, it is generally necessary to crush, pre-mix and soak particulate materials such as aggregates and fly ash to make the particle size uniform and qualified, and to facilitate the bonding and adsorption of the particle material with cement powder. In view of this, it is necessary to provide a feed pre-mixing mechanism for preparing concrete. Utility Model Content

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A feeding and initial mixing mechanism for preparing concrete, comprising a frame and:

[0006] Conveyor belt, used to transport mixed materials;

[0007] a vibrating screen, obliquely arranged at the end of the conveyor belt, for screening the mixed material conveyed by the conveyor belt, and a second discharge channel is provided at the lower end thereof for discharging the material screened by the vibrating screen;

[0008] A crushing assembly, the feed port of which is located below the side of the vibrating screen and is used to crush the material filtered by the vibrating screen;

[0009] A spray assembly is provided below the discharge port of the pulverizing assembly to spray water onto the pulverized material; a first discharge channel is provided at the lower end of the spray assembly; and

[0010] The auger conveyor has a feeding end connected to the first discharge channel and the second discharge channel, and is used to convey the material screened by the vibrating screen and crushed by the crushing assembly.

[0011] In a preferred embodiment, the auger conveyor is tilted on the frame, and the discharge end of the auger conveyor is higher than the feed end.

[0012] In a preferred embodiment, a group of discharge plates are obliquely arranged below the crushing assembly, the higher end of the discharge plate extends below the discharge port of the crushing assembly, and the lower end extends to the first discharge channel; the spray assembly sprays on the discharge plate.

[0013] In a preferred embodiment, the discharge plate is further provided with a scraper plate that can slide back and forth along the inclined direction of the discharge plate. The scraper plate is attached to the surface of the discharge plate to scrape off the material adhered to the surface of the discharge plate.

[0014] In a preferred embodiment, a group of bidirectional screw rods are arranged under the discharge plate, and the bidirectional screw rods are connected to a motor to drive the rotation of the bidirectional screw rods; the axis of the bidirectional screw rods is parallel to the moving direction of the scraper plate, and a group of sliders are provided on the bidirectional screw rods, and the scraper plate is arranged on the sliders.

[0015] In a preferred embodiment, the scraper plate is provided with a filter screen for filtering and accumulating large particles of material;

[0016] The discharge plate is provided with a slag discharge port located above the discharge port side of the pulverizing assembly, so as to discharge the accumulated large particle materials when the scraper plate moves to the slag discharge port.

[0017] In a preferred embodiment, the filter screen is arranged on the higher side of the scraper plate, and the lower side of the scraper plate has an inclined surface connected to the surface of the discharge plate.

[0018] In a preferred embodiment, the spray assembly includes a water source and a spray pipe connected to the water source, and a plurality of spray heads are evenly spaced on the spray pipe.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The utility model is provided with three processing mechanisms, namely a crushing assembly, a vibrating screen and an auger conveyor, in the feed primary mixing mechanism for preparing concrete. First, the vibrating screen is used to screen out fine particles and pulverized coal mixed in the granular material to the second discharge channel to avoid excessive crushing by the crushing assembly. At the same time, the large particle materials screened by the vibrating screen are crushed and sprayed by the crushing assembly and the spraying assembly, and discharged to the first discharge channel. The first discharge channel and the second discharge channel gather the materials to the auger conveyor, and then the materials are mixed and output through the auger conveying assembly. In the utility model, the aggregates, admixtures and other materials of the concrete are stirred and mixed multiple times by the three processing mechanisms, so that all kinds of materials are fully mixed and contacted, thereby improving the efficiency of the primary mixing of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a front view of the feed and initial mixing mechanism for preparing concrete according to the present invention;

[0022] Figure 2 for Figure 1 A magnified view of part A;

[0023] Figure 3 This is a schematic diagram of the assembly structure of the discharge plate and the scraper plate in the embodiment of the utility model;

[0024] Icons: 10-frame, 20-crushing assembly, 200-shell, 201-feed port, 202-discharge port, 21-first discharge channel, 22-vibrating screen, 23-second discharge channel, 24-auger conveyor, 240-feed end, 241-discharge end, 30-crusher, 300-crushing hammer, 40-discharge plate, 400-slag discharge port, 401-first connecting part, 402-second connecting part, 50-bidirectional screw, 500-connecting seat, 501-motor, 51-slider, 52-scraper plate, 520-filter, 60-spray assembly, 600-filling pipe, 61-spray pipe, 610-spray head, 70-conveyor belt. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Reference Figures 1 to 3 The utility model provides a feeding and initial mixing mechanism for preparing concrete, including a frame 10, and also including a conveyor belt 70, a crushing assembly 20, a vibrating screen 22, a spraying assembly 50 and an auger conveyor 24 arranged on the frame 10.

[0027] The conveyor belt 70 is provided at the uppermost end of the frame 10 and is used for conveying mixed materials such as aggregates and admixtures.

[0028] The vibrating screen 22 is obliquely arranged at the lower side of the output end of the conveyor belt 70. The mixed material conveyed by the conveyor belt 70 is screened by the vibrating screen 22 to separate large particles of material, coal powder and fine particles in the mixed material.

[0029] A crushing assembly 20 is provided at the lower left side of the vibrating screen 22. The feed port 201 of the crushing assembly 20 is located in the discharge direction of the vibrating screen 22. The large particles filtered by the vibrating screen 22 fall into the crushing assembly 20 for crushing; while the coal powder and fine particles can be discharged from the second discharge channel 23 at the lower end of the lattice vibrating screen 22.

[0030] Reference Figure 1 The crushing assembly 20 includes a shell 200, a feed port 201 is provided on the upper shell wall of the shell 200, and a discharge port 202 is provided on the lower shell wall. In addition, a crusher 30 is arranged inside the shell 200. The crusher 30 is a hammer crusher, which includes a plurality of crushing hammers 300. The large particle materials entering through the feed port 201 are crushed by the crushing hammers 300 and fall down and are discharged through the discharge port 202.

[0031] Reference Figure 1 A spray assembly 60 is provided below the shell 200 of the crushing assembly 20 for spraying water onto the crushed material to wet the mixed material.

[0032] In addition, refer to Figure 1 A group of discharge plates 40 are also obliquely arranged below the crushing assembly 20. The higher end of the discharge plate 40 extends to the lower side of the discharge port 202 of the crusher 30 to receive the crushed material. The lower end of the discharge plate 40 extends to the first discharge port 21, so that the crushed mixed material is transported to the first discharge port 21 along the discharge plate 40.

[0033] Among them, reference Figure 1 and Figure 3 The discharge plate 40 adopts a sheet metal structure. The higher end of the discharge plate 40 is welded with a first connecting portion 401, and the lower end is bent to form a second connecting portion 402. The first connecting portion 401 and the second connecting portion 402 are both welded to the frame 10.

[0034] Reference Figure 1 The spray assembly 60 includes a water tank, a water pump and a spray pipe 61. The water tank is the water source of the spray assembly 60. A filling pipe 600 is provided on the water tank, which can be used to add additives such as air entraining agent, antifreeze agent, waterproofing agent and rust inhibitor; the spray pipe 61 is set at an angle, and the spray pipe 61 extends along the inclined direction of the plate surface of the discharge plate 40. A number of spray heads 610 are evenly spaced on the spray pipe 61. During the transportation of the crushed mixed material on the discharge plate, the material is distributed in a thin layer, which facilitates the full mixing of the spray water and the material.

[0035] In addition, in order to prevent the crushed material from adhering to the discharge plate 40, in one embodiment, Figure 3 A scraper plate 52 is provided in the crushing assembly 20 and can slide back and forth along the inclined direction of the discharge plate 40. The extension direction of the scraper plate 52 is parallel to the width direction of the discharge plate 40. The scraper plate 52 is attached to the surface of the discharge plate 40. The reciprocating movement of the scraper plate 52 driven by the driving device can scrape off the material accumulated on the surface of the discharge plate 40.

[0036] As for the driving device, it is easy to understand that the driving device can adopt a structure such as a telescopic cylinder, a hydraulic cylinder or a linear motor.

[0037] In this embodiment, referring to Figure 1 , the driving device adopts a bidirectional screw structure, namely:

[0038] A group of bidirectional screw rods 50 are arranged under the discharge plate 40. The axis of the bidirectional screw rod 50 is parallel to the moving direction of the scraper plate 52. A group of sliders 51 are provided on the bidirectional screw rod 50. The scraper plate 52 is arranged on the slider 51. The two ends of the bidirectional screw rod 50 are rotatably arranged on a group of connecting seats 500. The rotation of the bidirectional screw rod 50 is driven by the motor 501, which can drive the reciprocating movement of the slider 51.

[0039] Reference Figure 3 A filter screen 520 is provided on the scraper plate 52 for filtering and accumulating large particles, that is, the material discharged from the crushing component 20 needs to be intercepted and filtered by the filter screen 520 during the process of tilting and falling on the discharge plate 40. The material with qualified particle size continues to fall to the discharge channel 21 through the filter screen 520, and the particle material with too large particle size is intercepted and accumulated on the filter screen 520; wherein, the discharge plate 40 has a slag discharge port 400 located above the discharge port 202 of the crushing component 20. When the scraper plate 52 moves to the slag discharge port 400, the large particles intercepted by the filter screen 520 are discharged along the slag discharge port 400.

[0040] Among them, reference Figure 2 and Figure 3 The filter screen 520 is arranged on the higher side of the scraper plate 52, and the lower side of the scraper plate 52 has an inclined surface connected to the surface of the discharge plate 40, which can facilitate the removal of materials adhered to the discharge plate 40.

[0041] Reference Figure 1 The feed end 240 of the auger conveyor 24 is connected to the first discharge channel 21 and the second discharge channel 23, and is used to transport the mixed material after screening by the vibrating screen 22 and crushing by the crushing assembly 20, that is, the material is transported to the next process along the auger conveyor 24.

[0042] Through the above-mentioned device, the aggregate and the admixture are mixed and processed multiple times by the crushing assembly 20, the vibrating screen 22 and the auger conveyor 24 to achieve the purpose of uniform premixing.

[0043] Reference Figure 1 In this embodiment, the discharge end 241 of the auger conveyor 24 is higher than the feed end 240, and the discharge end 241 is raised, which facilitates the transportation equipment to move to the lower end of the discharge end 241 for transfer processing.

[0044] The working principle of this utility model is as follows:

[0045] Aggregates, admixtures and other materials are screened by the vibrating screen 22, and materials with qualified particle sizes in the mixture can be discharged through the second discharge channel 23, while materials with larger particle sizes are crushed and mixed by the crushing assembly 20. Under the action of water spraying by the spray assembly 60, dust generation can be reduced; the crushed materials fall into the first discharge channel 21 below, and then the materials in the first discharge channel 21 and the second discharge channel 23 are mixed and conveyed through the auger conveyor 24. The auger conveyor 24 can conveniently introduce the mixed materials into the mixing station to be fully mixed with cement. Since the pre-mixed aggregates and admixtures are soaked with water, dust generation can be reduced when they come into contact with cement.

[0046] The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on these embodiments, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

Claims

1. A feeding and initial mixing mechanism for preparing concrete, characterized in that: It includes a frame and: Conveyor belt, used to transport mixed materials; a vibrating screen, obliquely arranged at the end of the conveyor belt, for screening the mixed material conveyed by the conveyor belt, and a second discharge channel is provided at the lower end thereof for discharging the material screened by the vibrating screen; A crushing assembly, the feed port of which is located below the side of the vibrating screen and is used to crush the material filtered by the vibrating screen; A spray assembly is provided below the discharge port of the pulverizing assembly to spray water onto the pulverized material; a first discharge channel is provided at the lower end of the spray assembly; as well as The auger conveyor has a feeding end connected to the first discharge channel and the second discharge channel, and is used to convey the material screened by the vibrating screen and crushed by the crushing assembly.

2. The feeding and pre-mixing mechanism for preparing concrete according to claim 1, characterized in that: The auger conveyor is tilted on the frame, and the discharge end of the auger conveyor is higher than the feed end.

3. The feeding and pre-mixing mechanism for preparing concrete according to claim 1, characterized in that: A group of discharge plates are also obliquely arranged below the crushing assembly, wherein the higher end of the discharge plate extends to below the crushing assembly discharge port, and the lower end extends to the first discharge channel; the spray assembly sprays on the discharge plate.

4. The feeding and pre-mixing mechanism for preparing concrete according to claim 3, characterized in that: The discharge plate is also provided with a scraper plate that can slide back and forth along the inclined direction of the discharge plate. The scraper plate is attached to the plate surface of the discharge plate to scrape off the material adhered to the surface of the discharge plate.

5. The feeding and pre-mixing mechanism for preparing concrete according to claim 4, characterized in that: A group of bidirectional screw rods are arranged under the discharge plate, and the bidirectional screw rods are connected to a motor to drive the rotation of the bidirectional screw rods; the axis of the bidirectional screw rods is parallel to the moving direction of the scraper plate, and a group of sliders are provided on the bidirectional screw rods, and the scraper plate is arranged on the sliders.

6. The feeding and pre-mixing mechanism for preparing concrete according to claim 4 or 5, characterized in that: The scraper plate is provided with a filter screen for filtering and accumulating large particles of material; The discharge plate is provided with a slag discharge port located above the discharge port side of the pulverizing assembly, so as to discharge the accumulated large particle materials when the scraper plate moves to the slag discharge port.

7. The feeding and pre-mixing mechanism for preparing concrete according to claim 6, characterized in that: The filter screen is arranged on a higher side of the scraper plate, and a lower side of the scraper plate has an inclined surface connected to the surface of the discharge plate.

8. The feed and preliminary mixing mechanism for preparing concrete according to claim 1, characterized in that: The spray assembly comprises a water source and a spray pipe connected to the water source, and a plurality of spray heads are evenly spaced on the spray pipe.

Images