Ingredient conveying device

Abstract

An ingredient conveying device comprises a machine frame, a first stock bin for storing a first ingredient and a second stock bin for storing a second ingredient are installed on the machine frame, and a storage metering system counts the weight of the ingredients stored in the first stock bin and the second stock bin and counts the weight of the ingredients needed in the batching process. A first ingredient output by the first stock bin and a second ingredient output by the second stock bin enter the mixing stock bin through the discharging system to be mixed, a mixture in the mixing stock bin is output outwards after passing through the mixing system, and the control system is used for controlling the storage metering system, the discharging system and the mixing system. The batching and conveying device has the advantages that the batching and conveying device is suitable for accurate proportioning, mixing and conveying of polymer concrete materials, and the storage metering system, the discharging system and the mixing system work cooperatively under the control of the control system, so that accurate, efficient and stable operation of the batching and conveying device is ensured.

Description

Technical Field

[0001] This utility model relates to the field of batching and conveying technology, and in particular to a batching and conveying device. Background Technology

[0002] With the development of transportation and civil aviation, the load requirements of existing airport design standards have increased, and damage to pavements from long-term use, such as paving slab cracks, broken joints, and potholes, coupled with climate warming and rising temperatures, has led to a decline in the structural load-bearing capacity and serviceability. Large-scale repairs of airport concrete pavements, especially to increase the load on the paving slabs, are most commonly carried out by adding a layer of cement or asphalt concrete of a certain thickness to the surface of the old paving slabs; this is commonly called "overlay" or "resurfacing." When overlaying asphalt on airport pavements, the surface layer is generally laid in three layers, requiring three stages to complete, which is time-consuming and cumbersome. Furthermore, due to the material properties of asphalt, it is prone to loosening, water damage, and rutting after a period of airport operation, and even serious peeling defects, posing certain safety hazards. If cement concrete overlay is used, the long hardening and setting time of cement concrete, requiring a 28-day curing period according to regulations, makes it impossible to carry out construction without stopping air traffic. Therefore, a new type of precast pavement slab for rapid on-site assembly without interrupting airport operations has emerged. Its novel polymer material can penetrate into the capillaries and cracks of concrete, providing penetrating repair and strong adhesion to the original pavement surface. Simultaneously, to ensure uninterrupted airport operations and achieve environmentally friendly, rapid, and large-scale delivery, it is essential to develop a method and complete set of equipment for precast pavement slab manufacturing to address the challenges of rapid, intelligent, precise, and environmentally friendly production. Due to the special properties of the material, the amount of polymer adhesive used needs to be strictly controlled to ensure the curing time of the precast pavement slabs and the uniform and stable performance of the finished product. Therefore, precise batching of precast pavement slabs plays a crucial role in the entire production process. However, the existing concrete batching and mixing systems do not meet the required precision, necessitating the development of a new device suitable for the proportioning, mixing, and conveying of polymer materials to meet the needs of on-site applications. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a batching and conveying device that is suitable for precise proportioning, mixing and conveying of ingredients, in light of the above-mentioned existing technology.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a batching and conveying device, including a frame, characterized in that: a first silo for storing a first batching ingredient and a second silo for storing a second batching ingredient are installed on the frame; a storage and metering system weighs the batching ingredients stored in the first and second silos and weighs the batching ingredients required during the batching process; the first batching ingredient output from the first silo and the second batching ingredient output from the second silo enter a mixing silo for mixing through a discharge system; the mixture in the mixing silo is output after passing through a mixing system; and a control system for controlling the storage and metering system, the discharge system, and the mixing system is also included.

[0005] The storage metering system can have various structures. Preferably, the storage metering system includes a weighing sensor and a weighing controller, and the weighing sensor is installed at the bottom of the first silo and the second silo.

[0006] The discharge system can have various structures. Preferably, the first ingredient stored in the first silo is a liquid ingredient. The discharge system of the first silo includes a discharge pipe and a conveying pump installed on the discharge pipe. Under the action of the conveying pump, the liquid ingredient is input into the mixing silo through the discharge pipe. The second ingredient stored in the second silo is aggregate. The discharge system of the second silo includes a discharge auger, and the aggregate enters the mixing silo through the discharge auger. For liquid materials, pumping is preferred, but high-pressure conveying or negative-pressure conveying can also be used. For aggregates, auger conveying is preferred, but belt conveying or gravity free discharge can also be used.

[0007] As another precise method for measuring liquid ingredients, a mass flow meter is also installed on the discharge pipe to monitor the weight of the liquid ingredients discharged.

[0008] To control the weight of the discharged material and ensure that each position in the mold is filled with material according to the preset weight, a weighing sensor is installed at the bottom of the mixing hopper.

[0009] The mixing system can have various structures. Preferably, the mixing system includes a mixing chamber and a mixing auger disposed within the mixing chamber. The mixing auger has a main shaft, on which a flexible scraper is also installed. The flexible scraper is in contact with the inner wall of the mixing chamber. With this arrangement, the scraper can fully agitate the liquid material at the bottom and thoroughly mix it with the aggregate.

[0010] To prevent the liquid material from flowing rapidly toward the outlet due to gravity during the mixing process, the feed inlet of the mixing auger is lower than the discharge outlet.

[0011] Further preferably, the mixing auger is a single auger or a double auger, with the double augers rotating in opposite directions. Using a double auger allows for more thorough mixing of the liquid material and aggregate, and also helps to improve the accuracy of the batching ratio.

[0012] To improve the uniformity of mixing, stirring blades are distributed axially at intervals on the main shaft of the mixing auger, and the stirring blades are staggered in the circumferential direction.

[0013] Further preferably, the mixing blade is a triangular three-dimensional mixing blade. The blade body has an arc surface arranged concentrically with the inner wall of the mixing chamber, and the blade tip is spike-shaped. The rotation direction of the mixing auger is consistent with the extension direction of the blade tip. Powdered aggregates and aggregates with small particle sizes will quickly clump together after contact with liquid materials. Once clumped, they are difficult to mix thoroughly with other aggregates. Because of its spike-shaped head, the triangular three-dimensional mixing blade can break up the clumps under high-speed rotation, allowing them to mix thoroughly with other aggregates, and then be stirred and conveyed by the mixing auger.

[0014] As a preferred embodiment of any of the above schemes, there are at least two first silos and at least two second silos, with the first silo located upstream of the second silo.

[0015] Compared with the prior art, the advantages of this utility model are as follows: the storage and metering system of the batching and conveying device weighs the ingredients stored in the first and second silos and weighs the ingredients required during the batching process. The first batching material output from the first silo and the second batching material output from the second silo enter the mixing silo for mixing through their respective discharge systems. The mixing system mixes the mixture in the mixing silo. This batching and conveying device is suitable for the precise proportioning, mixing and conveying of polymer concrete materials. Moreover, the storage and metering system, the discharge system and the mixing system work together under the control of the control system to ensure the accurate, efficient and stable operation of the batching and conveying device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the material feeding and conveying device according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the single auger mixing system according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the double auger mixing system according to an embodiment of the present invention;

[0019] Figure 4 for Figure 3 A schematic diagram of the mixing system from another angle;

[0020] Figure 5This is a schematic diagram of the structure of the stirring blade in an embodiment of the present invention. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1 As shown, the batching and conveying device in this embodiment includes a frame 1. A first silo 2 for storing the first batching ingredient and a second silo 3 for storing the second batching ingredient are installed on the frame 1. There are three of each type of silo, with the first silo 2 located upstream of the second silo 3. Each silo can discharge independently. The storage and metering system weighs the batching ingredients stored in the first and second silos 2 and weighs the batching ingredients required during the batching process. The first batching ingredient output from the first silo 2 and the second batching ingredient output from the second silo 3 enter the mixing silo 4 through the discharge system for mixing. The outlet of the mixing silo 4 is equipped with a conveying pipe 41. The mixture in the mixing silo 4 is mixed by the mixing system 5 and then discharged to the mold through the conveying pipe 41 for distribution. The mixing system 5 is used to mix all the weighed raw materials, control the mixing time, and ensure the uniformity of the mixing. The control system 6 is used to control the coordinated operation of the storage and metering system, the discharge system, and the mixing system 5 to ensure accurate, efficient, and stable operation of the system.

[0023] The storage and metering system of this embodiment includes a weighing sensor 7 and a weighing controller. The weighing sensor 7 is installed at the bottom of the first silo 2 and the second silo 3. A weighing sensor 7 is also installed at the bottom of the mixing silo 4. The weight of the material being discharged is controlled according to the above-described material control method to ensure that each position in the mold of the precast slab is filled with material according to the preset weight.

[0024] In this embodiment, the first material stored in the first silo 2 is a liquid material. The discharge system of the first silo 2 includes a discharge pipe 81 and a conveying pump 82 installed on the discharge pipe 81. Under the action of the conveying pump 82, the liquid material is input into the mixing silo 4 through the discharge pipe 81. The second material stored in the second silo 3 is aggregate. The discharge system of the second silo 3 includes a discharge auger 84. The aggregate enters the mixing silo 4 through the discharge auger 84. For liquid materials, the above-mentioned pumping method is preferred, but high-pressure conveying or negative-pressure conveying methods can also be used. For aggregates, the above-mentioned auger conveying method is preferred, but belt conveying or gravity free discharge methods can also be used.

[0025] In addition, a mass flow meter 83 for monitoring the weight of liquid feed output is also installed on the discharge pipe 81 of this embodiment, which can monitor the weight of the liquid feed through the mass flow meter 83.

[0026] like Figures 2 to 5As shown, the mixing system 5 in this embodiment includes a mixing chamber 50 and a mixing auger 51 disposed within the mixing chamber 50. The mixing auger 51 has a main shaft 52, and a flexible scraper 53 is also installed on the main shaft 52. The flexible scraper 53 is in contact with the inner wall of the mixing chamber 50. Due to the presence of the flexible scraper 53, it can be ensured that during mixing, the flexible scraper 53 fully stirs up the liquid material at the bottom of the mixing chamber 50 and fully mixes it with the aggregate.

[0027] A plurality of stirring blades 54 are axially spaced along the main shaft 52 of the mixing auger 51. The stirring blades 54 are staggered circumferentially. Preferably, the stirring blades 54 on the same auger are staggered by 180 degrees, but they can also be staggered by 120 degrees, 90 degrees, etc., depending on the mixing capacity. In this embodiment, the stirring blades 54 are triangular three-dimensional stirring blades 54. The blade body 541 of the stirring blade 54 has an arc surface arranged concentrically with the inner wall of the mixing chamber 50 to ensure that all materials are fully mixed during the mixing process. The blade tip 542 of the stirring blade 54 is spike-shaped, and the rotation direction of the mixing auger 51 is consistent with the extension direction of the blade tip 542 of the stirring blade 54. Powdered aggregates and aggregates with small particle sizes will quickly clump together after contact with liquid materials. After clumping, it is difficult to fully mix with other aggregates. The triangular three-dimensional stirring blades, because their heads are spike-shaped, can re-spread the clumped mixture under high-speed rotation and make it fully mixed with other aggregates. After all materials are discharged according to the formula ratio, they are thoroughly mixed in the mixing system 5, and then conveyed by the auger feeding device according to the preset feeding trajectory.

[0028] In addition, the mixing auger 51 in this embodiment adopts an upward-sloping structure, that is, the inlet is lower than the outlet, which can prevent the liquid material from flowing rapidly toward the outlet due to gravity during the mixing process.

[0029] like Figure 2 As shown, the mixing auger 51 adopts a single auger structure, as follows: Figure 3 As shown, the mixing auger 51 adopts a double auger structure, and the rotation directions of the two augers are opposite to each other. The control system gives the output weight of the batching as S. The discharge system discharges the material at a preset auger motor speed. Within a time ΔT (ΔT is the unit of time in milliseconds), the control system detects the output weight ΔG of the discharge hopper. Through integral calculation, the output weight per minute is obtained as S1 = G. The system compares the magnitude of S and S1 and adjusts the auger motor speed in real time. Throughout the feeding process, the system keeps S infinitely close to S1, achieving accurate metering.

[0030] The batching and conveying device in this embodiment is used for the precise proportioning, mixing, and comfort of precast paving slabs. During operation, the control system 6 can receive the output signals of the mass flow meter 83 and / or the weighing sensor 7, and control the flow rate of the conveying pump 82 and the rotation speed of the discharge auger 84 and the mixing auger 51 according to the formula weight ratio requirements of the precast paving slabs, thereby realizing the adjustment of the discharge amount and achieving the purpose of controlling the discharge weight. This effectively ensures the accuracy of the precise proportioning of polymer concrete materials and ensures the stable and uniform quality of precast paving slabs.

[0031] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A batch delivery device comprising a gantry (1), characterized in that: The first bin (2) for storing the first material and the second bin (3) for storing the second material are installed on the frame (1), the warehouse metering system meters the weight of the stored materials in the first bin (2) and the second bin (3) and meters the required materials in the material mixing process, the first material output from the first bin (2) and the second material output from the second bin (3) enter the mixing bin (4) through the discharge system, the mixed material in the mixing bin (4) is output outward through the mixing system (5), and the control system (6) for controlling the warehouse metering system, the discharge system and the mixing system (5) is further included.

2. A dosing delivery device according to claim 1, characterized in that: The warehouse metering system comprises a weighing sensor (7) and a weighing controller, and the weighing sensor (7) is installed at the bottom of the first bin (2) and the second bin (3).

3. The ingredient delivery device of claim 1, wherein: The first material stored in the first bin (2) is a liquid material, the discharge system of the first bin (2) comprises a discharge pipe (81) and a conveying pump (82) installed on the discharge pipe (81), under the action of the conveying pump (82), the liquid material is input into the mixing bin (4) through the discharge pipe (81), the second material stored in the second bin (3) is an aggregate, and the discharge system of the second bin (3) comprises a discharge auger (84), and the aggregate enters the mixing bin (4) through the discharge auger (84).

4. A dosing delivery device according to claim 3, wherein: A mass flow meter (83) for monitoring the discharge weight of the liquid material is further installed on the discharge pipe (81).

5. The ingredient delivery device of claim 1, wherein: A weighing sensor (7) is installed at the bottom of the mixing bin (4).

6. The ingredient delivery device of claim 1, wherein: The mixing system (5) comprises a stirring bin (50) and a mixing auger (51) arranged in the stirring bin (50), the mixing auger (51) has a main shaft (52), a flexible scraper (53) is further installed on the main shaft (52), and the flexible scraper (53) is attached to the inner wall of the stirring bin (50).

7. A dosing delivery device according to claim 6, characterised in that: The feeding port of the mixing auger (51) is lower than the discharging port.

8. A dosing delivery device according to claim 6, characterized in that: The mixing auger (51) is a single auger or a double auger, and the rotation directions of the double augers are opposite to each other.

9. The ingredient delivery device of claim 6, wherein: A stirring knife (54) is axially and intermittently arranged on the main shaft (52) of the mixing auger (51), and the stirring knife (54) is circumferentially and intermittently arranged.

10. A dosing delivery device according to claim 9, characterized in that: The stirring knife (54) is a triangular three-dimensional stirring knife (54), the blade body (541) of the stirring knife (54) has a circular arc surface arranged in concentric circles with the inner wall of the stirring bin (50), the blade tip (542) of the stirring knife (54) is in the shape of a sharp spike, and the rotation direction of the mixing auger (51) is consistent with the extension direction of the blade tip (542) of the stirring knife (54).

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