CN115179428A - A kind of preparation process of concrete - Google Patents

Abstract

The invention discloses a preparation process of concrete, which belongs to the technical field of concrete. Compared with the prior art, the two second stirring rods are self-rotating and the rotation directions are opposite, so the stirring blocks connected to them are also self-rotating. It has a strong stirring effect on the accumulated raw materials, so that the raw materials are evenly distributed in the concrete, and the gas is sprayed from the air holes to wash and stir the accumulated raw materials on the scraper, so that the accumulated raw materials are turned up and down in the concrete and finally evenly dispersed in the concrete. The block can fit well with the bottom of the mixing barrel under the elastic thrust of the spring, and the stirring effect is good. When the stirring component rotates, it will drive the second stirring rod to rotate, so that the stirring block can contact the bottom of the mixing barrel in a larger range, thereby further enhancing the The stirring intensity of the piled raw materials is improved, and the stirring efficiency and the stirring effect are improved.

Description

A kind of preparation process of concrete

technical field

The invention relates to the technical field of concrete, in particular to a preparation process of concrete.

Background technique

Concrete is one of the most important civil engineering materials of our time. It is an artificial stone made of cementitious materials, granular aggregates, water, and admixtures and admixtures added when necessary in a certain proportion, uniformly stirred, compacted, cured and hardened.

Concrete has the characteristics of abundant raw materials, low price and simple production process, so its consumption is increasing. It is widely used, not only in various civil engineering, but also in shipbuilding, machinery industry, marine development, geothermal engineering, etc. Concrete is also an important material.

In the prior art, concrete mixing devices use mixing blades to mix concrete, but machine-made sand and crushed stones in concrete raw materials tend to accumulate at the bottom of the water under the action of gravity, resulting in poor mixing between concrete raw materials and affecting concrete quality.

SUMMARY OF THE INVENTION

1. Technical problems to be solved

In view of the problems existing in the prior art, the purpose of the present invention is to provide a process for preparing concrete, in which, compared with the prior art, the two second stirring rods will self-rotate and rotate in opposite directions, so the The mixing block will also self-rotate and have a strong stirring effect on the accumulated raw materials, so that the raw materials are evenly distributed in the concrete, and the gas is sprayed from the air holes to wash and stir the accumulated raw materials on the scraper, so that the accumulated raw materials are turned up and down in the concrete. Dispersed in the concrete, the mixing block can fit well with the bottom of the mixing bucket under the elastic thrust of the spring, and the mixing effect is good. When the mixing component rotates, it will drive the second mixing rod to rotate, so that the mixing block can be in contact with the bottom of the mixing bucket. Larger, thus further enhancing the stirring strength of the stacked raw materials, improving the stirring efficiency and stirring effect.

2. Technical solutions

In order to solve the above problems, the present invention adopts the following technical solutions.

A preparation process of concrete, using a concrete mixing device to prepare concrete, the concrete comprising the following raw materials in parts by mass: 50-130 parts of water, 150-220 parts of ordinary Portland cement, and 30 parts of natural sand and gravel in the downstream of the river. -50 parts, 15-20 parts of crushed stone, 20-25 parts of fly ash, 5-10 parts of concrete additives;

The preparation process comprises the following steps:

S1. Pour the different raw materials required for preparing concrete into the mixing bucket respectively;

S2, grading and stirring the raw materials;

S21, control the stirring component to start, and the first stirring rod in the stirring component performs preliminary stirring on the material in the stirring bucket;

S23. The two symmetrically distributed second stirring rods in the stirring assembly will drive the stirring blocks at the bottom of the stirring blocks to rotate in opposite directions, and the stirring blocks will fully stir the raw materials deposited in the stirring tank during the rotation;

S24, the gas is transported into the air cavity in the second stirring rod, the gas flows into the stirring block and is ejected from the air holes on the stirring block, and the ejected gas will squeeze the elastic rubber strips that fit and seal with the air holes, Secondary impact stirring is performed on the deposited raw materials;

S25, when the second stirring rod finishes stirring the raw material, the second stirring rod will drive the stirring block to move upward and shrink until the stirring block is separated from the concrete slurry;

S26. During the rotation process of the third stirring rod on the stirring assembly, the raw material adhering to the inner wall of the stirring barrel is scraped off by the scraper;

S3. When the concrete mixing is finished, open the discharge port of the mixing bucket, and the concrete is sent out from the discharge port;

S4, and then pour the concrete into the required mold as required, and then demould to obtain the finished concrete;

The concrete mixing device includes a mixing bucket and a mixing component located inside the mixing bucket, an L-shaped fixing column is fixedly connected to the outer end of the mixing bucket, and the upper end of the L-shaped fixing column extends to the top of the mixing bucket and rotates with the mixing component connection, the bottom of the stirring assembly is rotatably connected with a first stirring rod and two second stirring rods, the second stirring rods are symmetrically distributed with the first stirring rod as the center, and the second stirring rod and the first stirring rod There is a preset angle, a first motor that drives the first stirring rod to rotate is installed on the L-shaped fixed column, a fixed gear is fixedly connected to the top of the first stirring rod, and a fixed gear is fixedly connected to the second stirring rod. A moving gear that meshes with the fixed gear; an electric push rod is fixedly connected to the bottom of the second stirring rod, a telescopic assembly is fixedly connected to the output end of the electric push rod, a stirring block is hinged at the bottom of the telescopic assembly, and the bottom of the stirring block is The scraping strips are staggered and fixed on both sides, the surface of the scraping strip is provided with a plurality of air holes, the outer side of the air holes is sealed with an elastic rubber strip, the bottom of the elastic rubber strip is fixedly connected with the stirring block, and the second stirring rod An air cavity communicated with the air hole is excavated, an air pump for transporting gas to the air cavity through a pipeline is also installed in the L-shaped fixed column, the telescopic assembly includes a telescopic rod and a telescopic cylinder, and the bottom of the telescopic rod is connected to the inner wall of the telescopic cylinder Telescopic sliding connection, and a spring is fixedly connected between the telescopic rod and the telescopic cylinder; a second motor is fixedly installed at the bottom of the L-shaped fixed column, the output end of the second motor is driven and connected with a driving gear, and the outer periphery of the stirring assembly is opened There are tooth slots that mesh with the drive gear.

Further, two symmetrically distributed third stirring rods are connected to the outer periphery of the stirring assembly, and a scraper is fixedly installed at one end of the third stirring rod facing the inner wall of the stirring barrel.

Further, the stirring assembly is provided with a guide groove for accommodating the longitudinal sliding of the third stirring rod, and an electric sliding rail for driving the movement of the third stirring rod is installed in the guide groove.

Further, the gas state input in the step S24 includes normal gas and gas to be preheated. When the ambient temperature is higher than the threshold value, input the normal gas, and when the ambient temperature is lower than the threshold value, input the gas to be preheated.

Further, an elastic metal scraper is fixedly installed on the part of the scraper in contact with the inner wall of the mixing tank, a vibration motor is sealed in the scraper, and the output end of the vibration motor is connected with the elastic metal scraper.

Further, the preset included angle is set to 20°-45°, the second stirring rod and the pipeline are connected in rotation, and a sealing ring is placed at the connection.

Further, the outer diameter of the telescopic rod is smaller than the inner diameter of the telescopic cylinder, and the two are arranged concentrically.

Further, an elastic rubber isolation sleeve is sleeved between the telescopic assembly and the electric push rod, the surface of the isolation sleeve is distributed in a wave shape, and the surface of the elastic rubber isolation sleeve is coated with a hydrophobic paint.

Further, a plurality of disturbance rods are also arranged inside the elastic rubber isolation sleeve, one end of the disturbance rod is fixedly connected with the electric push rod, and the other end of the disturbance rod is movably inserted into the telescopic assembly.

Further, a plurality of outwardly protruding disturbance blocks are spaced apart from the side of the disturbance rod toward the elastic rubber isolation sleeve, and the distance between the trough of the elastic rubber isolation sleeve and the disturbance rod is smaller than the radius of the disturbance block.

3. Beneficial effects

Compared with the prior art, the advantages of the present invention are:

(1) Compared with the prior art, in this scheme, the two second stirring rods will rotate by themselves, and the rotation directions are opposite, so the stirring blocks connected to them will also self-rotate and have a strong stirring effect on the accumulated raw materials, so that the raw materials are in the The concrete is evenly distributed, and the gas is sprayed from the air holes to wash and mix the raw materials accumulated on the scraper, so that the accumulated raw materials are turned up and down in the concrete and finally evenly dispersed in the concrete, improving the quality of the concrete, and the elastic thrust of the mixing block in the spring The bottom can fit well with the bottom of the mixing tank, and the stirring effect is good. When the stirring component rotates, it will drive the second stirring rod to rotate, so that the stirring block can contact the bottom of the mixing tank in a larger range, thereby further enhancing the stirring intensity of the accumulated raw materials. , improve the stirring efficiency and stirring effect.

(2) The elastic rubber strips seal the air holes. When the air pump is accidentally closed, it can prevent the backflow of the concrete slurry and play a protective role.

(3) When the second stirring rod is finished stirring, the electric push rod drives the telescopic assembly to shrink, so that the telescopic assembly drives the stirring block to separate from the concrete slurry, so that the concrete can discharge the gas contained in the concrete in the subsequent stirring.

(4) When the stirring assembly rotates, it will drive the third stirring rod to rotate, so that the third stirring rod can not only stir the concrete again, but also drive the scraper to scrape the concrete adhering to the inner wall of the mixing tank for stirring.

Description of drawings

Fig. 1 is the overall cross-sectional three-dimensional structure schematic diagram of the present invention;

Fig. 2 is the enlarged structural schematic diagram of part A in Fig. 1 of the present invention;

3 is a schematic diagram of a side view connection structure of a stirring block and an elastic rubber strip of the present invention;

Fig. 4 is the overall sectional structure schematic diagram of the present invention;

Fig. 5 is the enlarged structural schematic diagram of part B in Fig. 4 of the present invention;

Fig. 6 is the second stirring rod rotation demonstration structure schematic diagram of the present invention;

Fig. 7 is the overall side view structure schematic diagram of the present invention;

8 is a schematic diagram of the overall three-dimensional structure of the present invention;

FIG. 9 is a schematic view of the enlarged structure of the C part in FIG. 8 of the present invention

Description of the labels in the figure:

1. Mixing bucket; 2. Mixing components; 3. L-shaped fixed column; 4. The first stirring rod; 5. The second stirring rod; 6. Fixed gear; 7. Moving gear; 8. Electric push rod; 9. Telescopic Components; 10, stirring block; 11, scraper; 12, air hole; 13, elastic rubber strip; 14, spring; 15, driving gear; 16, third stirring rod; 17, elastic metal scraper; 18, elastic rubber isolation set; 19, perturbation block.

Detailed ways

In this embodiment 1, the technical solutions will be clearly and completely described in conjunction with the disclosed drawings, so as to make the purpose, technical solutions and beneficial effects of the embodiments of the present disclosure more clear. Obviously, the described embodiments are some, but not all, embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.

Unless otherwise defined, technical or scientific terms used in the present disclosure shall have the ordinary meaning as understood by those skilled in the art to which this disclosure belongs. As used in this disclosure, "first," "second," and similar terms do not denote any order, quantity, or importance, but are merely used to distinguish the various components. "Comprising" and similar words mean that the elements or things appearing before the word encompass the elements or things listed after the word and their equivalents, but do not exclude other elements or things. "Up", "down", "inside", "outside", etc. are only used to indicate relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

Example:

Please refer to Figure 1-2, a concrete preparation process, using a concrete mixing device to prepare the concrete, the concrete includes the following raw materials in parts by mass: water 50-130 parts, ordinary Portland cement 150-220 parts, river Downstream natural sandstone 30-50 parts, crushed stone 15-20 parts, fly ash 20-25 parts, 5-10 parts concrete additives;

The preparation process includes the following steps:

S1. Pour different raw materials required for preparing concrete into mixing bucket 1 respectively;

S2, grading and stirring the raw materials;

S21, control the stirring component 2 to start, and the first stirring rod 4 in the stirring component 2 performs preliminary stirring on the material in the stirring tank 1;

S23. The two symmetrically distributed second stirring rods 5 in the stirring assembly 2 will drive the stirring blocks 10 at the bottoms of them to rotate, and the rotation directions are opposite, and the stirring blocks 10 fully stir the raw materials deposited in the stirring barrel 1 during the rotation;

S24, the gas is transported into the air cavity in the second stirring rod 5, the gas flows into the stirring block 10 and is ejected from the air hole 12 on the stirring block 10, and the ejected gas will fit the elastic rubber with the air hole 12. The strip 13 is squeezed open, and the deposited raw material is subjected to secondary impact stirring;

S25. After the second stirring rod 5 finishes stirring the raw materials, the second stirring rod 5 will drive the stirring block 10 to move upward and shrink until the stirring block 10 is separated from the concrete slurry;

S26. During the rotation process of the third stirring rod 16 on the stirring assembly 2, the raw material adhering to the inner wall of the stirring barrel 1 is scraped off by a scraper;

S3. When the concrete mixing is finished, the discharge port of the mixing bucket 1 is opened, and the concrete is sent out from the discharge port;

S4, and then pour the concrete into the required mold as required, and then demould to obtain the finished concrete;

Please refer to Fig. 2-4, the bottom of the second stirring rod 5 is fixedly connected with an electric push rod 8, the output end of the electric push rod 8 is fixedly connected with a telescopic assembly 9, the bottom of the telescopic assembly 9 is hinged with a stirring block 10, and the bottom of the stirring block 10 is on both sides The scraping bars 11 are fixed in a staggered manner. Specifically, the second stirring rod 5 will rotate by itself under the driving of the stirring assembly 2, so the stirring block 10 connected to it will also self-rotate. The stirring range is large, and the stirring block 10 passes through the rotation process. The staggered scraper bars 11 can stir the raw materials accumulated at the bottom, so that the raw materials are evenly distributed in the concrete. A plurality of air holes 12 are formed on the surface of the scraper bar 11 , and the outer side of the air holes 12 is sealed with an elastic rubber strip 13 , and the bottom of the elastic rubber strip 13 is fixedly connected with the stirring block 10 , and the second stirring rod 5 is drilled with an air cavity that communicates with the air holes 12 . , the L-shaped fixed column 3 is also equipped with an air pump that transports the gas to the air cavity through the pipeline. Specifically, the air pump transports the gas to the stirring block 10 through the pipeline and the gas cavity. When the gas pressure in the stirring block 10 is greater than that of the elastic rubber strip 13. When the elastic force and the gravity of the raw materials are piled up, the elastic rubber strip 13 will deform and open the air hole 12. At this time, the gas is sprayed from the air hole 12 to wash and stir the raw materials accumulated on the scraper strip 11, so that the raw materials are turned up and down in the concrete and finally uniform. Disperse in the concrete, wherein, the elastic rubber strip 13 plays a sealing effect on the air hole 12, when the air pump is turned off, the backflow of the concrete slurry can be avoided, wherein the scraping strip 11 is made of elastic metal sheet. The gas state input in step S24 includes conventional gas and gas to be preheated. When the ambient temperature is higher than the threshold value, the conventional gas is input, and when the ambient temperature is lower than the threshold value, the gas to be preheated is input, wherein the threshold value is 5°, so that in When the temperature is low, the mixing degree of concrete can be improved by inputting heating gas.

Please refer to FIG. 4 , the concrete mixing device includes a mixing bucket 1 and a mixing assembly 2 located inside the mixing bucket 1 . An L-shaped fixing column 3 is fixedly connected to the outer end of the mixing bucket 1 , and the upper end of the L-shaped fixing column 3 extends to the front of the mixing bucket 1 . The top is rotationally connected with the stirring assembly 2, the bottom of the stirring assembly 2 is rotatably connected with a first stirring rod 4 and two second stirring rods 5, and the second stirring rods 5 are symmetrically distributed with the first stirring rod 4 as the center, and the second stirring rod There is a preset angle between the rod 5 and the first stirring rod 4, the L-shaped fixed column 3 is installed with a first motor that drives the first stirring rod 4 to rotate, and the top of the first stirring rod 4 is fixedly connected with a fixed gear 6, The second stirring rod 5 is fixedly connected with a movable gear 7 that meshes with the fixed gear 6; in particular, the output end of the first motor is fixedly connected to the first stirring rod 4, so the first stirring rod 4 uses the stirring blades distributed on the outside of itself to affect the concrete. It plays a longitudinal stirring role. Since the second stirring rods 5 on both sides of the first stirring rod 4 are distributed obliquely, when the second stirring rod 5 rotates, it plays a horizontal stirring effect on the concrete, realizing multi-directional mixing of the concrete and improving the stirring effect. The fixed gear 6 is fixed on the first stirring rod 4, so when the fixed gear 6 rotates, it will drive two meshing moving gears 7 to rotate, and the two moving gears 7 rotate in opposite directions, and the moving gear 7 is connected with the second stirring rod 5 Therefore, the second stirring rod 5 is driven to rotate, and the stirring effect is enhanced, wherein the diameter of the moving gear 7 is larger than the diameter of the fixed gear 6, thereby reducing the rotational speed of the moving gear 7, thereby reducing the rotational speed of the second stirring rod 5, so that the second The stirring rod 5 can work stably in the subsequent stirring operation. The preset included angle is set to 20°-45°, the second stirring rod 5 and the pipeline are connected in rotation, and a sealing ring is placed at the connection. Specifically, by rotating the sealing ring, the pipeline and the second stirring rod 5 can be rotated, so that the pipeline will not be entangled due to the rotation of the second stirring. The outer diameter of the telescopic rod is smaller than the inner diameter of the telescopic cylinder, and the two are arranged concentrically. Therefore, it is convenient for the telescopic rod to be retracted into the telescopic cylinder, and a rubber sealing ring is also installed between the telescopic rod and the telescopic cylinder.

4-5, the telescopic assembly 9 includes a telescopic rod and a telescopic cylinder, the bottom of the telescopic rod is telescopically and slidably connected to the inner wall of the telescopic cylinder, and a spring 14 is fixedly connected between the telescopic rod and the telescopic cylinder. Specifically, the two ends of the spring 14 are respectively in contact with the telescopic rod and the telescopic cylinder, thereby exerting elastic thrust on the telescopic cylinder. Therefore, when the telescopic cylinder drives the hinged stirring block 10 to rotate, the stirring block 10 can be in good contact with the bottom of the stirring barrel 1. Fitting, the stirring effect is good, and when the second stirring rod 5 is finished stirring, the electric push rod 8 drives the telescopic assembly 9 to shrink, so that the telescopic assembly 9 drives the stirring block 10 to separate from the concrete slurry, so that the concrete will be contained in the subsequent stirring. gas is discharged. An elastic rubber isolation sleeve 18 is sleeved between the telescopic assembly 9 and the electric push rod 8, the surface of the isolation sleeve is distributed in a wave shape, and the surface of the elastic rubber isolation sleeve 18 is coated with a hydrophobic paint. A plurality of disturbance rods are also arranged inside the elastic rubber isolation sleeve 18 , one end of the disturbance rod is fixedly connected with the electric push rod 8 , and the other end of the disturbance rod is movably inserted into the telescopic assembly 9 . A plurality of outwardly protruding disturbance blocks 19 are distributed at intervals on the side of the disturbance rod toward the elastic rubber isolation sleeve 18 , and the distance between the trough of the elastic rubber isolation sleeve 18 and the disturbance rod is smaller than the radius of the disturbance block 19 . Specifically, when the electric push rod 8 drives the telescopic assembly 9 to shrink, the elastic rubber isolation sleeve 18 will also deform and shrink due to its own elasticity, and the elastic rubber isolation sleeve 18 will collide with a plurality of disturbance blocks 19 during the shrinkage process, thereby Vibrates concrete adhering to itself.

Please refer to Fig. 6-8, a second motor is fixedly installed at the bottom of the L-shaped fixing column 3, the output end of the second motor is drivingly connected with a drive gear 15, and the outer periphery of the stirring assembly 2 is provided with a tooth slot that meshes with the drive gear 15. Specifically, When the output end of the second motor drives the driving gear 15 to rotate, the driving gear 15 will drive the stirring assembly 2 to rotate through the meshing tooth slot, and when the stirring assembly 2 rotates, it will drive the second stirring rod 5 to rotate, so that the stirring block 10 can be connected with the stirring bucket. 1. The bottom contact range is larger, which further enhances the stirring intensity of the raw materials, and improves the stirring efficiency and stirring effect.

Referring to FIGS. 8-9 , two symmetrically distributed third stirring rods 16 are connected to the outer periphery of the stirring assembly 2 , and a scraper is fixedly installed at one end of the third stirring rod 16 facing the inner wall of the stirring barrel 1 . Specifically, when the stirring assembly 2 rotates, it will drive the third stirring rod 16 to rotate, so that the third stirring rod 16 can not only stir the concrete again, but also drive the scraper to scrape the concrete adhering to the inner wall of the mixing bucket 1. Stir. The stirring assembly 2 is provided with a guide groove for accommodating the longitudinal sliding of the third stirring rod 16 , and an electric sliding rail for driving the movement of the third stirring rod 16 is installed in the guide groove. Specifically, the scraper can move vertically under the driving of the electric sliding rail, so that the scraper can contact the inner wall of the mixing barrel 1 in a larger range, and the scraping effect is stronger. The part of the scraper in contact with the inner wall of the mixing barrel 1 is fixedly installed with an elastic metal scraper 17 , a vibration motor is sealed in the scraper, and the output end of the vibration motor is connected with the elastic metal scraper 17 . Specifically, the elastic metal scraper 17 can be elastically deformed and not easily damaged when it is damped by the outside world, and the vibration motor can make the elastic metal scraper 17 vibrate, which is convenient for scraping the concrete quickly.

Compared with the prior art, in which the two second stirring rods 5 rotate by themselves, and the rotation directions are opposite, so the stirring blocks 10 connected to them will also self-rotate and have a strong stirring effect on the accumulated raw materials, so that the raw materials are distributed in the concrete. Evenly, the gas is sprayed from the air hole 12 to wash and stir the raw materials accumulated on the scraper bar 11, so that the accumulated raw materials are turned up and down in the concrete and finally evenly dispersed in the concrete. The stirring block 10 can be stirred with the elastic thrust of the spring 14 The bottom of the bucket 1 fits well, and the stirring effect is good. When the stirring component 2 rotates, it will drive the second stirring rod 5 to rotate, so that the stirring block 10 can contact the bottom of the stirring bucket 1 more widely, thereby further enhancing the stirring of the accumulated raw materials. Strength, improve stirring efficiency and stirring effect.

The above are only preferred specific embodiments of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical scope of the present invention, according to the technical solution of the present invention and its improvement concept, equivalently replaces or changes, should be covered within the protection scope of the present invention.

Claims (10)

1. a preparation technique of concrete is characterized in that: adopt concrete mixing device to carry out the preparation of concrete, and described concrete comprises following raw materials according to mass parts: 50-130 parts of water, 150-220 parts of ordinary Portland cement, 30-50 parts of natural sand and gravel in the lower reaches of the river, 15-20 parts of crushed stone, 20-25 parts of fly ash, 5-10 parts of concrete additives; The preparation process comprises the following steps: S1. Pour different raw materials required for preparing concrete into the mixing bucket (1) respectively; S2, grading and stirring the raw materials; S21, controlling the stirring assembly (2) to start, and the first stirring rod (4) in the stirring assembly (2) initially stirs the material in the stirring barrel (1); S23. The two symmetrically distributed second stirring rods (5) in the stirring assembly (2) will drive the stirring blocks (10) at the bottoms of the stirring blocks (10) to rotate in opposite directions. ) the deposited raw materials are fully stirred; S24, convey the gas into the air cavity in the second stirring rod (5), the gas flows into the stirring block (10) and is ejected from the air hole (12) on the stirring block (10), and the ejected gas will be mixed with the stirring block (10). The air hole (12) is pressed and opened against the sealed elastic rubber strip (13), and the deposited raw material is subjected to secondary impact stirring; S25. After the second stirring rod (5) finishes stirring the raw materials, the second stirring rod (5) will drive the stirring block (10) to move upward and shrink until the stirring block (10) is separated from the concrete slurry; S26. During the rotation process of the third stirring rod (16) on the stirring assembly (2), the raw material adhering to the inner wall of the stirring barrel (1) is scraped off by a scraper; S3. When the concrete mixing is finished, the discharge port of the mixing bucket (1) is opened, and the concrete is sent out from the discharge port; S4, and then pour the concrete into the required mold as required, and then demould to obtain the finished concrete; The concrete mixing device comprises a mixing bucket (1) and a mixing assembly (2) located inside the mixing bucket (1), and an L-shaped fixing column (3) is fixedly connected to the outer end of the mixing bucket (1). The upper end of the fixed column (3) extends to just above the stirring barrel (1) and is rotatably connected with the stirring assembly (2), and the bottom of the stirring assembly (2) is rotatably connected with a first stirring rod (4) and two second stirring rods (4) Rod (5), the second stirring rod (5) is symmetrically distributed with the first stirring rod (4) as the center, and a preset clamp is provided between the second stirring rod (5) and the first stirring rod (4) Angle, the L-shaped fixed column (3) is installed with a first motor that drives the first stirring rod (4) to rotate, and a fixed gear (6) is fixedly connected to the top of the first stirring rod (4). A movable gear (7) meshing with the fixed gear (6) is fixedly connected to the two stirring rods (5); The bottom of the second stirring rod (5) is fixedly connected with an electric push rod (8), the output end of the electric push rod (8) is fixedly connected with a telescopic assembly (9), and the bottom of the telescopic assembly (9) is hinged with a stirring rod Block (10), scraping strips (11) are staggeredly fixed on both sides of the bottom of the stirring block (10), a plurality of air holes (12) are opened on the upper surface of the scraping strip (11), and the outside of the air holes (12) is sealed An elastic rubber strip (13) is attached, the bottom of the elastic rubber strip (13) is fixedly connected with the stirring block (10), and an air cavity communicated with the air hole (12) is drilled in the second stirring rod (5), The L-shaped fixed column (3) is also provided with an air pump for delivering gas to the air cavity through a pipeline, the telescopic assembly (9) includes a telescopic rod and a telescopic cylinder, and the bottom of the telescopic rod is telescopically and slidably connected to the inner wall of the telescopic cylinder. , and a spring (14) is fixedly connected between the telescopic rod and the telescopic cylinder; A second motor is fixedly installed at the bottom of the L-shaped fixing column (3), the output end of the second motor is drivingly connected with a driving gear (15), and the outer periphery of the stirring assembly (2) is provided with a meshing with the driving gear (15). the tooth slot. 2. The preparation process of concrete according to claim 1, characterized in that: the outer periphery of the stirring assembly (2) is connected with two symmetrically distributed third stirring rods (16), and the third stirring rods ( 16) A scraper is fixedly installed at one end facing the inner wall of the mixing barrel (1). 3. A concrete preparation process according to claim 2, characterized in that: the stirring assembly (2) is provided with a guide groove for accommodating the longitudinal sliding of the third stirring rod (16), and the guide groove is installed in the guide groove There is an electric slide rail that drives the movement of the third stirring rod (16). 4. The preparation process of a concrete according to claim 1, characterized in that: the gas state input in the step S24 includes conventional gas and gas to be preheated, when the ambient temperature is higher than the threshold, the conventional gas is input, when Enter the gas to be preheated when the ambient temperature is lower than the threshold. 5. The preparation process of concrete according to claim 2, characterized in that: the part of the scraper in contact with the inner wall of the mixing bucket (1) is fixedly installed with an elastic metal scraper (17), and the scraper is in the A vibration motor is installed in the seal, and the output end of the vibration motor is connected with an elastic metal scraper (17). 6. The preparation process of concrete according to claim 1, characterized in that: the preset included angle is set to 20°-45°, and the second stirring rod (5) and the pipeline are rotatably connected, And a sealing ring is placed at the connection. 7 . The preparation process of concrete according to claim 1 , wherein the outer diameter of the telescopic rod is smaller than the inner diameter of the telescopic cylinder, and the two are concentrically arranged. 8 . 8 . The preparation process of concrete according to claim 1 , wherein an elastic rubber isolation sleeve ( 18 ) is sleeved between the telescopic assembly ( 9 ) and the electric push rod ( 8 ), and the isolation The surface of the sleeve is distributed in a wave shape, and the surface of the elastic rubber isolation sleeve (18) is coated with a hydrophobic paint. 9. The preparation process of a concrete according to claim 8, characterized in that: the elastic rubber isolation sleeve (18) is further provided with a plurality of disturbance rods, and one end of the disturbance rod is connected to the electric push rod (8) Fixed connection, the other end of the disturbance rod is movably inserted into the telescopic assembly (9). 10 . The preparation process of concrete according to claim 9 , wherein a plurality of outwardly protruding disturbance blocks ( 19 ) are distributed at intervals on one side of the disturbance rod toward the elastic rubber isolation sleeve ( 18 ). 11 . , and the distance between the trough of the elastic rubber isolation sleeve (18) and the disturbance rod is smaller than the radius of the disturbance block (19).

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