A device and method for preparing concrete based on volcanic rock aggregate

Abstract

The invention discloses a device and method for preparing concrete based on volcanic rock aggregate in the field of building construction technology. The device comprises a mixing barrel and a screening component. The mixing barrel is used to hold raw materials for preparing concrete. The mixing barrel is provided with a mixing component and a first solenoid valve. The mixing component is used to mix the raw materials. The mixing component is provided with a driving member and a transmission component. The transmission component is provided with a boosting component. The transmission component is used to transmit the power of the mixing component to drive the boosting component to work. The boosting component is used to inject gas into the mixing barrel to increase the pressure of the mixing barrel. The screening component is connected with the mixing barrel. The screening component is used to screen the volcanic aggregate and drive the screened volcanic rock into the mixing barrel. The device also comprises a control system. The control system is used to control the driving member, the first solenoid valve and the screening component to work, so as to solve the problems of a single mixing method and a slow mixing speed of the mixer in the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and specifically relates to a device and a method for preparing concrete based on volcanic rock aggregate. Background Art

[0002] Volcanic rock (also known as pumice) is a non-metallic mineral that is widely distributed in my country with rich reserves, covering the Northeast, Northwest, Hainan and Yunnan regions. The characteristics of volcanic rock are: well-developed pores, low thermal conductivity, light and fragile, low hardness, high water absorption, and low bulk density. It is widely used in many fields of industry and agriculture. Volcanic rock has the properties of light weight, high strength, heat preservation, sound insulation, anti-slip, acid resistance, alkali resistance and high temperature resistance, and is a very good building material. Residents have long mined volcanic rocks and crushed them into volcanic rocks for building houses, roads, bridges, walls, etc. During the period of vigorous development of infrastructure, volcanic rock concrete prepared with volcanic rock as coarse aggregate also shines in the process of urban construction.

[0003] In the process of preparing concrete using volcanic rock aggregate, a concrete mixer is often used to mix the raw materials. The concrete mixer used in the prior art uses a stirring blade to mix the concrete, and the stirring method is single, which makes its stirring speed slow, affecting the subsequent construction efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for preparing concrete based on volcanic rock aggregate, so as to solve the problems of single mixing method and slow mixing speed of the mixer in the prior art.

[0005] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: an apparatus for preparing concrete based on volcanic rock aggregates, comprising a mixing barrel and a screening assembly, the mixing barrel being used to hold raw materials for preparing concrete, the mixing barrel being provided with a mixing assembly and a first solenoid valve, the mixing assembly being used to mix the raw materials, the mixing assembly being provided with a driving member and a transmission assembly, the transmission assembly being provided with a boosting assembly, the transmission assembly being used to transmit the power of the mixing assembly to drive the boosting assembly to work, the boosting assembly being used to inject gas into the mixing barrel to increase the pressure of the mixing barrel, the screening assembly being connected to the mixing barrel, the screening assembly being used to screen the volcanic aggregates, and driving the screened volcanic rocks into the mixing barrel;

[0006] It also includes a control system, which is used to control the operation of the driving member, the first solenoid valve and the screening component.

[0007] Furthermore, the screening component includes an outer shell, in which two layers of screens are arranged, and the two layers of screens and the outer shell constitute a screening chamber, the screening chamber is connected to the mixing barrel, and a first one-way valve is provided at the connection point, and the screening chamber is connected to an air supply component, the air supply component is used to drive volcanic rock aggregate into the mixing barrel, and a vibrator is also fixedly connected to the outer shell, and the control system is used to control the operation of the air supply component and the vibrator.

[0008] Furthermore, the boosting assembly includes a crankshaft, a transmission assembly is fixedly connected to the crankshaft, the crankshaft is rotatably connected to the mixing barrel, a plurality of connecting rods are hinged on the crankshaft, a boosting cylinder is provided on the other side of the connecting rod, a piston is slidably fitted in the boosting cylinder, and the piston is fixedly connected to the adjacent connecting rod, a second one-way valve is provided on the boosting cylinder, the boosting cylinder is connected to the mixing barrel, and a third one-way valve is provided at the connection point.

[0009] Further, the control system includes a pressure sensor, an air pressure sensor and a controller;

[0010] The pressure sensor is used to collect the weight information of the raw materials put into the mixing tank;

[0011] The air pressure sensor is used to collect the air pressure information of the mixing tank;

[0012] The controller is used to receive the preset weight information of the aggregate input by the user, control the operation of the driving member, the air supply assembly and the vibrator according to the weight information and the preset weight information of the aggregate, and control the operation of the first solenoid valve according to the air pressure information.

[0013] Furthermore, the boosting component also includes a pressure storage box, which is arranged at the connecting point between the boosting cylinder and the mixing barrel. A second solenoid valve is provided at the connecting point between the pressure storage box and the mixing barrel. The pressure storage box is connected to the screening chamber, and a third solenoid valve is provided at the connecting point. The controller controls the operation of the second solenoid valve and the third solenoid valve according to the air pressure information.

[0014] Furthermore, a pressure regulating assembly is provided at the connection point between the screening chamber and the mixing barrel, and the pressure regulating assembly is used to adjust the pressure of the screening chamber to assist the aggregate to enter the mixing barrel. The controller controls the operation of the pressure regulating assembly according to the weight information and the air pressure information.

[0015] Furthermore, it also includes an alarm, and the controller can also be used to receive demand information input by the user. The controller controls the air supply component, the vibrator, the alarm and the driving component to work according to the demand information and weight information.

[0016] Furthermore, the stirring assembly includes a stirring shaft, on which a plurality of stirring blades are arranged, the stirring shaft is coaxially fixedly connected to the driving member, and the stirring shaft is fixedly connected to the transmission assembly.

[0017] Furthermore, a placement groove is provided in each of the stirring blades, and an extended blade is slidably fitted in each of the placement grooves. A spring is fixedly connected to each of the extended blades, and the other end of the spring is fixedly connected to the side wall of the placement groove.

[0018] Further, the method is carried out by any of the aforementioned devices for preparing concrete based on volcanic stone aggregates, comprising: volcanic stone aggregates, fine aggregates, cement and volcanic ash;

[0019] Step 1: Soak the volcanic stone aggregate for 24 hours, then drain and wipe the water stains on the surface of the volcanic stone aggregate;

[0020] Step 2: Select a water reducing agent, and mix and stir the water reducing agent, volcanic rock aggregate, fine aggregate, cement and volcanic ash to obtain an intermediate product;

[0021] Step 3: testing the slump of the intermediate product. When the slump is qualified, the concrete prepared based on the volcanic rock aggregate is obtained.

[0022] The technical principles and beneficial effects of the above scheme are as follows:

[0023] (1) The design of the booster assembly and the first solenoid valve in this scheme provides a certain positive pressure to the raw materials during the circumferential and horizontal stirring of the raw materials by the stirring assembly, thereby promoting the vertical movement of particles such as aggregates in the raw materials. After reaching a certain pressure, the pressure is released through the first solenoid valve to avoid safety accidents caused by excessive pressure in the mixing barrel. At the same time, the pressure change caused by the gas flow can further promote the reverse vertical movement of particles in the raw materials.

[0024] Compared with the prior art, this solution can mix the raw materials horizontally and vertically, which can speed up the time for the aggregate to reach a suitable distribution state and reduce the preparation time of concrete.

[0025] (2) The design of the transmission component in this scheme transmits the kinetic energy of the working stirring component to the boosting component, so that the driving part can drive the boosting component to work synchronously while driving the stirring component to work, thereby reducing the power source and thus reducing the energy consumption of the device during operation.

[0026] (3) The design of the screening component in this scheme can directly put the volcanic rock aggregate into the mixing barrel after screening, reducing the time for workers to screen the volcanic rock aggregate. At the same time, it also allows mixing and volcanic rock aggregate screening to be carried out simultaneously, further reducing the time for concrete preparation.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a partial schematic diagram of a mixing assembly of an embodiment of an apparatus and method for preparing concrete based on volcanic rock aggregates according to the present invention;

[0029] Figure 2 A top view of an embodiment of an apparatus and method for preparing concrete based on volcanic rock aggregate according to the present invention;

[0030] Figure 3 It is a cross-sectional view taken along line AA of an embodiment of an apparatus and method for preparing concrete based on volcanic rock aggregate according to the present invention;

[0031] Figure 4 It is a circuit diagram of an embodiment of an apparatus and method for preparing concrete based on volcanic rock aggregate according to the present invention;

[0032] Figure 5 The present invention is a flow chart of an embodiment of an apparatus and method for preparing concrete based on volcanic rock aggregate.

[0033] The figure marks in the drawings of the specification include: screening component 1, shell 11, screen 12, mixing barrel 2, mixing component 3, mixing shaft 31, mixing blade 32, spring 33, extension blade 34, boosting component 4, pressure storage box 41, boosting cylinder 42, piston 43, connecting rod 44, crankshaft 45, transmission component 5, second bevel gear 51, first bevel gear 52. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it is to be understood that the terms “longitudinal”, “lateral”, “vertical”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0037] The following is further described in detail through specific implementation methods:

[0038] Embodiment 1:

[0039] As attached Figure 1 -Attached Figure 4 As shown: a device for preparing concrete based on volcanic rock aggregate, including a mixing barrel 2 and a screening component 1, the mixing barrel 2 is used to hold raw materials for preparing concrete, a mixing component 3 and a first solenoid valve are provided on the mixing barrel 2, the first solenoid valve is fixedly connected to the top wall of the mixing barrel 2 by bolts, the mixing component 3 includes a mixing shaft 31, the mixing shaft 31 is arranged in the mixing barrel 2, and the top end of the mixing shaft 31 extends to the outside of the mixing barrel 2, a plurality of mixing blades 32 are welded and fixed on the side wall of the mixing shaft 31 located in the mixing barrel 2, one end of the mixing shaft 31 located outside the mixing barrel 2 is coaxially welded and fixed with the driving member, the mixing component 3 is used to mix the raw materials, the mixing component 3 is provided with a driving member and a transmission component 5, the driving member is preferably a diesel engine, the diesel engine The output shaft is coaxially fixedly connected to the stirring shaft 31, the transmission assembly 5 includes a first bevel gear 52 and a second bevel gear 51, the first bevel gear 52 is coaxially welded and fixed to the stirring shaft 31, the transmission assembly 5 is used to transmit the power of the stirring assembly 3 to drive the supercharging assembly 4 to work, the supercharging assembly 4 includes a crankshaft 45, the crankshaft 45 is coaxially fixedly connected to the second bevel gear 51, the crankshaft 45 is rotatably connected to the outer wall of the stirring barrel 2 through a bearing, a plurality of connecting rods 44 are hinged on the crankshaft 45, and a supercharging cylinder 42 is provided on the other side of the connecting rod 44, a piston 43 is slidably fitted in the supercharging cylinder 42, and the piston 43 is welded and fixed to the adjacent connecting rod 44, a second one-way valve is provided on the supercharging cylinder 42, and the supercharging cylinder 42 is connected to the stirring barrel 2 , and a third one-way valve is provided at the connection point, the booster component 4 is used to inject gas into the mixing barrel 2 to increase the pressure of the mixing barrel 2, the screening component 1 is connected to the top wall of the mixing barrel 2, the screening component 1 includes a shell 11, two layers of screens 12 are welded and fixed in the shell 11, the mesh number of the upper screen 12 is smaller than that of the lower screen 12, and the two layers of screens 12 and the shell 11 constitute a screening chamber, the screening chamber is connected to the mixing barrel 2, and a first one-way valve is provided at the connection point, and the screening chamber is connected to an air supply component, which is preferably a pneumatic conveyor, and the air supply component is used to drive the volcanic stone aggregate into the mixing barrel 2, and a vibrator is also fixed to the shell 11 by bolts, and the screening component 1 is used to screen the volcanic aggregate and drive the screening The finished volcanic rock enters the mixing barrel 2; it also includes a control system, which includes a pressure sensor, an air pressure sensor and a controller; the pressure sensor is arranged on the mixing barrel 2, and the air pressure sensor is fixedly connected to the inner wall of the mixing barrel 2 by bolts, and the pressure sensor is used to collect the weight information of the raw materials put into the mixing barrel 2; the air pressure sensor is used to collect the air pressure information of the mixing barrel 2; the pressure sensor, the air pressure sensor, the diesel engine, the first solenoid valve, the pneumatic conveyor and the vibrator are all electrically connected to the controller, and the controller is used to receive the preset weight information of the aggregate input by the user, and control the diesel engine, the air supply component and the vibrator to work according to the preset weight information and weight information of the aggregate, and control the first solenoid valve to work according to the air pressure information.

[0040] The specific implementation process is as follows: when using the device, according to the required concrete grade, select appropriate cement, fine aggregate, admixture and additive, etc., weigh the appropriate weight and pour it into the mixing barrel 2, then pour the volcanic rock aggregate onto the screen 12 located on the upper layer, start the device, and input the preset weight information of the aggregate into the controller, that is, the required weight of the volcanic rock aggregate.

[0041] The operation of the vibrator drives the outer shell 11 to vibrate, thereby driving the aggregate to pass through the screen 12. Due to the design of the two layers of screens 12, larger aggregates remain above the upper screen 12, while smaller aggregates are screened to the bottom of the lower screen 12. Only aggregates that meet the coarse aggregate particle size standard remain between the two screens 12. The operation of the vibrator can also prevent larger aggregates from clogging the screen 12 and affecting the screening effect.

[0042] At the same time, the pneumatic conveyor works, driving the aggregate between the two screens 12 into the mixing barrel 2. The pressure sensor collects the weight information of the raw materials entering the mixing barrel 2 in real time. When the added value of the weight information reaches the same as the preset weight information of the aggregate, the controller controls the pneumatic conveyor and the vibrating screen to stop working.

[0043] When the aggregate enters the mixing barrel 2, the controller starts the diesel engine, and the diesel engine drives the mixing shaft 31 to rotate, and drives the aggregate and other raw materials to rotate, stir and mix through the mixing blades 32. At the same time, the coaxial first bevel gear 52 and the second bevel gear 51 of the mixing shaft 31 drive the crankshaft 45 to rotate, and the crankshaft 45 drives the connecting rod 44 to move, and the connecting rod 44 drives the piston 43 to move. Due to the limiting effect of the boost cylinder 42, the piston 43 moves up and down in the boost cylinder 42. When the piston 43 moves upward, the external gas enters the boost cylinder 42 through the second one-way valve. When the piston 43 moves downward, the gas in the boost cylinder 42 enters the mixing barrel 2. The air pressure in the mixing barrel 2 rises. Under the action of the air pressure, the aggregates and the like move downward, thereby vertically stirring the raw materials. The air pressure sensor continuously collects air pressure information in the mixing barrel 2. When the air pressure information exceeds the set value, the controller controls the first solenoid valve to open, so that the gas in the mixing barrel 2 leaves the mixing barrel 2 from the first solenoid valve. During the gas flow, the air pressure changes, which drives the aggregates and the like to move upward again, and further vertically stirs the raw materials. When the air pressure information is about to reach the set value, the controller controls the first solenoid valve to close again, and repeats the above steps until the raw materials are stirred to a suitable state to obtain concrete prepared from volcanic rock aggregates.

[0044] Based on the above scheme, in order to reduce the energy consumption of the air supply component and reduce the low air pressure in the screening chamber, which makes it difficult for aggregates to enter the mixing barrel 2, the booster component 4 also includes a pressure storage box 41, and the pressure storage box 41 is arranged at the connection between the booster cylinder 42 and the mixing barrel 2. The connection between the pressure storage box 41 and the mixing barrel 2 is fixedly connected with a second solenoid valve by bolts. The pressure storage box 41 is connected to the screening chamber, and the connection is fixedly connected with a third solenoid valve by bolts. The second solenoid valve and the third solenoid valve are both electrically connected to the controller, and the controller controls the second solenoid valve and the third solenoid valve according to the air pressure information. The solenoid valve works, thus, when the air pressure information exceeds the set value, the controller controls the first solenoid valve to open and release the pressure. At the same time, the controller controls the second solenoid valve to open and the third solenoid valve to close, so that the gas in the boost cylinder 42 enters the pressure storage box 41. When the controller controls the first solenoid valve to close, the controller controls the second solenoid valve to close, so that the gas in the boost cylinder 42 enters the mixing barrel 2 again. At the same time, the controller controls the third solenoid valve to open, so that the gas in the pressure storage box 41 enters the screening chamber, and assists the pneumatic conveyor to transport the aggregate into the mixing barrel 2.

[0045] Based on the above scheme, in order to further avoid the air pressure in the screening chamber being too low, making it difficult for aggregates to enter the mixing chamber, a pressure regulating component is provided at the connection between the screening chamber and the mixing barrel 2, and the pressure regulating component includes an air compressor, and the output end of the air compressor is connected to the screening chamber. The pressure regulating component is used to adjust the pressure in the screening chamber to assist the aggregates to enter the mixing barrel 2. The air compressor is electrically connected to the controller, and the controller controls the operation of the pressure regulating component according to the weight information and the air pressure information. Therefore, when using this device, the controller does not stop the operation of the pneumatic conveyor, but the weight information does not increase within the set time, that is, the aggregates may be due to the excessive air pressure in the mixing barrel 2, causing the aggregates to enter the mixing barrel 2. At this time, the controller controls the air compressor to work, pump compressed air into the screening chamber, increase the air pressure in the screening chamber, and assist the aggregates to enter the mixing barrel 2.

[0046] Based on the above scheme, in order to further reduce the operating steps of the operator, an alarm is also included, and the controller can also be used to receive the demand information input by the user. The alarm is electrically connected to the controller. The controller controls the pneumatic conveyor, the vibrator, the alarm and the driving member to work according to the demand information and the weight information. Therefore, when using the device, the operator inputs the demand information into the controller according to the required grade of concrete and the required amount of concrete. The controller calculates the weight of various required raw materials according to the grade and weight of the concrete. Then the operator places volcanic stone aggregate on the screen 12, and sequentially puts fine aggregate, cement, admixture and additive into the mixing barrel 2. When a certain raw material is added, the weight When the value-added amount information reaches the required weight of the raw material, the controller controls the alarm to sound an alarm, prompting the user to add the next raw material. When the raw materials except the coarse aggregate are added, the controller controls the pneumatic conveyor and the vibrator to work, driving the volcanic rock aggregate into the mixing barrel 2, and controls the diesel engine to work to mix the raw materials. During the mixing process, if the volcanic rock aggregate does not reach the required weight, when the weight information no longer increases, and the controller controls the air compressor to work within the set time, the weight information still does not change. At this time, the volcanic rock aggregate on the screen 12 is insufficient, and the controller controls the alarm to work, prompting the operator to add volcanic rock aggregate to avoid affecting the mechanical properties of the final concrete.

[0047] Based on the above scheme, in order to further enhance the stirring effect of the present device and shorten the stirring time, a placement groove is opened in the stirring blade 32, and an extended blade 34 is slidably fitted in the placement groove. A spring 33 is welded and fixed on the extended blade 34, and the other end of the spring 33 is welded and fixed to the side wall of the placement groove. Therefore, during the stirring process, under the action of centrifugal force, the extended blade 34 moves in the direction away from the stirring shaft 31, so that the stirring range of the stirring blade 32 is increased. During the stirring process, under the action of harder raw materials such as aggregates, the extended blade 34 moves in the opposite direction and is retracted into the placement groove. After being away from this part of the raw materials, it is again moved away from the stirring shaft 31 by the action of centrifugal force. During this reciprocating motion, the extended blade 34 can stir the raw materials horizontally, thereby enhancing the stirring effect of the present device.

[0048] Embodiment 2:

[0049] As attached Figure 5 As shown, the difference from Example 1 is that the method for preparing concrete based on volcanic stone aggregate carried out by the above-mentioned equipment comprises: volcanic stone aggregate, fine aggregate, cement and volcanic ash, and the fine aggregate is preferably machine-made sand;

[0050] Step 1: Soak the volcanic stone aggregate for 24 hours, then drain and wipe the water stains on the surface of the volcanic stone aggregate;

[0051] Step 2: Select a water reducing agent, preferably a polycarboxylic acid-based high-performance water reducing agent, and mix the water reducing agent, volcanic rock aggregate, fine aggregate, cement and volcanic ash to obtain an intermediate product;

[0052] Step 3: Testing the slump of the intermediate product. When the slump can be maintained at 200±20 mm, the concrete prepared based on the volcanic rock aggregate is obtained.

[0053] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and / or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A device for preparing concrete based on volcanic rock aggregate, characterized in that: It includes a mixing barrel and a screening component. The mixing barrel is used to hold raw materials for preparing concrete. The mixing barrel is provided with a mixing component and a first solenoid valve. The mixing component is used to mix the raw materials. The mixing component is provided with a driving member and a transmission component. The transmission component is provided with a booster component. The transmission component is used to transmit the power of the mixing component to drive the booster component to work. The booster component is used to inject gas into the mixing barrel to increase the pressure of the mixing barrel. The booster component includes a crankshaft. The transmission component is fixedly connected to the crankshaft. The crankshaft is rotatably connected to the mixing barrel. A plurality of connecting rods are hinged on the crankshaft. A booster cylinder is provided on the other side of the connecting rod. A piston is slidably fitted in the booster cylinder. The pistons are all fixedly connected to the adjacent connecting rods, the booster cylinders are all provided with a second one-way valve, the booster cylinders are all connected to the mixing barrel, and a third one-way valve is provided at the connection point, the screening component is connected to the mixing barrel, the screening component is used to screen the volcanic stone aggregate, and drive the screened volcanic stone into the mixing barrel, the screening component includes a shell, two layers of screens are provided in the shell, and the two layers of screens and the shell form a screening chamber, the screening chamber is connected to the mixing barrel, and a first one-way valve is provided at the connection point, and the screening chamber is connected to an air supply component, the air supply component is used to drive the volcanic stone aggregate into the mixing barrel, and a vibrator is also fixedly connected to the shell; Also included is a control system, which is used to control the operation of the driving member, the first solenoid valve and the screening assembly; The boosting assembly also includes a pressure storage box, which is arranged at the connection between the boosting cylinder and the mixing barrel. A second solenoid valve is provided at the connection between the pressure storage box and the mixing barrel. The pressure storage box is connected to the screening chamber, and a third solenoid valve is provided at the connection. The control system controls the operation of the second solenoid valve and the third solenoid valve according to the air pressure information.

2. The device for preparing concrete based on volcanic stone aggregate according to claim 1, characterized in that: The control system is used to control the operation of the air supply components and the vibrator.

3. The device for preparing concrete based on volcanic stone aggregate according to claim 2, characterized in that: The control system includes a pressure sensor, an air pressure sensor and a controller; The pressure sensor is used to collect the weight information of the raw materials put into the mixing tank; The air pressure sensor is used to collect the air pressure information of the mixing tank; The controller is used to receive the preset weight information of the aggregate input by the user, control the operation of the driving member, the air supply assembly and the vibrator according to the weight information and the preset weight information of the aggregate, and control the operation of the first solenoid valve according to the air pressure information.

4. The device for preparing concrete based on volcanic stone aggregate according to claim 3, characterized in that: A pressure regulating assembly is provided at the connection point between the screening chamber and the mixing barrel. The pressure regulating assembly is used to adjust the pressure of the screening chamber to assist the aggregate to enter the mixing barrel. The controller controls the operation of the pressure regulating assembly according to the weight information and the air pressure information.

5. The device for preparing concrete based on volcanic stone aggregate according to claim 4, characterized in that: It also includes an alarm, and the controller can also be used to receive demand information input by the user. The controller controls the air supply component, the vibrator, the alarm and the driving component to work according to the demand information and weight information.

6. The device for preparing concrete based on volcanic stone aggregate according to claim 5, characterized in that: The stirring assembly comprises a stirring shaft, on which a plurality of stirring blades are arranged, the stirring shaft is coaxially fixedly connected with the driving member, and the stirring shaft is fixedly connected with the transmission assembly.

7. The device for preparing concrete based on volcanic stone aggregate according to claim 6, characterized in that: The stirring blades are all provided with placement grooves, the placement grooves are all slidably matched with extended blades, the extended blades are all fixedly connected with springs, and the other ends of the springs are all fixedly connected with the side walls of the placement grooves.

8. A method for preparing concrete based on volcanic rock aggregates, characterized in that: The method is carried out by using the device for preparing concrete based on volcanic stone aggregate according to any one of claims 1 to 7, comprising: volcanic stone aggregate, fine aggregate, cement and volcanic ash; Step 1: Soak the volcanic stone aggregate for 24 hours, then drain and wipe the water stains on the surface of the volcanic stone aggregate; Step 2: Select a water reducing agent, and mix and stir the water reducing agent, volcanic rock aggregate, fine aggregate, cement and volcanic ash to obtain an intermediate product; Step 3: testing the slump of the intermediate product. When the slump is qualified, the concrete prepared based on the volcanic rock aggregate is obtained.

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