CN219968375U - Concrete mixing device for construction - Google Patents

Abstract

The embodiment of the present application provides a concrete mixing device for building construction, which belongs to the technical field of building construction. The concrete mixing device for building construction includes a mixing tank and a mixing mechanism. The mixing tank includes a tank body and a top cover. The tank body has a stirring chamber. The mixing mechanism includes a driving motor and a mixing component. The driving motor is arranged on the top cover, and the stirring component is arranged on the mixing chamber. In the tank, the driving end of the drive motor is connected to the mixing component for stirring the materials in the mixing tank; the concrete mixing device for construction also includes a flushing component, which includes a flushing pipeline and multiple sprinkler heads. , there is a water spray cavity inside the top cover, the bottom wall of the top cover is provided with a plurality of water outlets communicating with the inside of the water spray cavity, and a plurality of water spray heads are installed correspondingly to each water outlet hole. This concrete mixing device for construction can improve the flushing effect inside the mixing tank and ensure the normal operation of the concrete mixing device.

Description

A kind of concrete mixing device for building construction

Technical field

The present application relates to the technical field of building construction, specifically, to a concrete mixing device for building construction.

Background technique

As an essential building material in construction, concrete is widely used in modern society. The preparation of concrete is usually produced by a concrete mixing station. When mixing concrete in a concrete mixing station, various raw materials of concrete are put into a concrete mixing tank. For mixing, when using small batches of concrete, a smaller amount of concrete is required. At this time, most concrete mixing stations use smaller concrete mixing pipes with movable mixing wheels for production.

After the concrete production is completed, the mixing tank needs to be cleaned in time to prevent the concrete on the inner wall of the mixing tank from solidifying. However, the existing cleaning device for the mixing tank in concrete production generally requires the staff to hold a water spray head to clean it. During this period, the mixing tank cannot be deeply cleaned, the cleaning efficiency is relatively low, and the height of the cleaning device cannot be adjusted according to the height of the mixing tank.

Utility model content

The embodiment of the present application provides a concrete mixing device for construction, which can improve the flushing effect in the mixing tank and ensure the normal operation of the concrete mixing device.

The embodiment of the present application provides a concrete mixing device for construction. The concrete mixing device for construction includes a mixing tank and a mixing mechanism. The mixing tank includes a tank body and a top cover. The tank body has a stirring cavity, and the top cover is located on the tank body. The top and bottom of the tank have a discharge pipe, which is coaxially arranged with the tank; the stirring mechanism includes a driving motor and a stirring component, the driving motor is arranged on the top cover, the stirring component is arranged in the mixing tank, and the driving motor The driving end is connected to the mixing component for stirring the materials in the mixing tank; wherein, the concrete mixing device for construction also includes a flushing component, which includes a flushing pipeline and multiple water spray heads, and the inside of the top cover has In the water spray chamber, the bottom wall of the top cover is provided with a plurality of water outlets connected to the inside of the water spray cavity, and multiple water spray heads are installed correspondingly in each water outlet hole; one end of the flushing pipeline is connected to the water spray cavity, and the other end is connected to the water supply components.

In this solution, the top opening of the tank can be closed by the top cover. The driving motor is installed on the top cover, and the driving end of the driving motor is connected to the stirring component to stir the materials in the mixing tank. And by arranging a flushing component, a water spray chamber is formed inside the top cover, so that multiple water spray heads are arranged on the bottom wall of the top cover. Under the water supply of the flush pipeline, the top cover exerts pressure on the tank. Under the covering effect, multiple water spray heads can quickly flush the materials adhered to the inner wall of the tank. Compared with manual flushing using flushing pipes, the flushing effect is higher, and manual intervention is not required, which is more convenient. Save labor and easy to implement.

In some embodiments, the water supply assembly includes a water supply pipeline and a booster water pump. The booster water pump is disposed on the water supply pipeline. The outlet end of the water supply pipeline is connected to the flushing pipeline. The booster water pump is used to pump water in the water supply pipeline. Pressurize.

In the above solution, a booster water pump is provided on the water supply pipeline. The booster water pump can pressurize the water supply pipeline, so that the water entering the water spray chamber is high-pressure water, and the corresponding water sprayed from the water spray head is High-pressure water has a better flushing effect on the inner wall of the tank. It can clean the materials adhered to the inner wall of the tank together, reducing the probability of materials adhering to the inner wall of the tank.

In some embodiments, the bottom wall of the top cover is an arc-shaped surface that protrudes outward, a plurality of water spray head arrays are distributed on the bottom wall of the top cover, and the cross-section of the water spray chamber is correspondingly configured as an arc-shaped cavity.

In the above solution, the bottom wall of the top cover is provided with an arc-shaped surface that protrudes outward. The arc-shaped surface makes the water spray range of multiple water spray heads wider, achieving multi-angle coverage and flushing of the inner wall of the tank. This enables the flushing component to flush the inner wall of the tank within a larger range, and the flushing effect is correspondingly better.

In some embodiments, an anti-clogging component is provided on the water spray head, and the anti-clogging component is used to prevent materials from entering the water spray head when the flushing component stops working.

In the above scheme, since the concrete mixing device is mainly used to mix concrete, the materials required for concrete mixing are cement, sand and water, which have strong adhesion ability. During the mixing process of the concrete mixing device, concrete is easily splashed to the nozzle. The nozzle is clogged, affecting the normal operation of the flushing component. Therefore, by providing an anti-clogging component at the water spray head, the anti-clogging component can prevent materials from entering the water spray head when the flushing component stops working, ensuring the subsequent flushing effect of the flushing component on the mixing tank.

In some embodiments, the anti-clogging component includes an anti-clogging piece, a hinge shaft and a torsion spring. The hinge shaft is provided on one side of the water spray head, and the anti-clogging piece is rotatably installed on the water spray head through the hinge shaft for closing the water spray. The water outlet of the head; the torsion spring is set on the hinge shaft, one end is connected to the water spray head, and the other end is connected to the anti-clogging piece; the anti-clogging piece has an open state and a closed state compared to the water outlet of the water spray head. When flushing When the pipeline is working, the water pressure at the water outlet of the sprinkler head can drive the anti-blocking piece to rotate along the axis of the hinge shaft to open the sprinkler head and allow the torsion spring to accumulate elastic force. The elastic force is used when the flushing assembly stops working. The anti-clogging piece is driven to rotate and reset to close the water outlet of the sprinkler head.

In the above solution, by rotating the anti-clogging piece on the water spray head through the hinge shaft, and the torsion spring is sleeved on the hinge shaft, when the flushing assembly stops working, the anti-clogging piece can close the water outlet of the water spray head. When the pipeline is flushed, the water pressure at the outlet of the water spray head can drive the anti-blocking piece to rotate along the axis of the hinge shaft, thereby automatically opening the water spray head and cleaning the inner wall of the tank with the water spray head. At this time, the torsion spring accumulates elastic force, and the elastic force can drive the anti-clogging piece to rotate and reset after the flushing component is flushed, and then close the outlet of the sprinkler head again, providing protection for the sprinkler head without human intervention. Automatically prevents the sprinkler head from clogging.

In some embodiments, the anti-blocking piece is made of stainless steel.

In the above solution, the anti-clogging piece is made of stainless steel, so that the anti-clogging piece is not easily eroded by concrete.

In some embodiments, the stirring assembly includes a stirring shaft, a stirring paddle group and a scraper. The stirring shaft is coaxially arranged with the tank, the driving end of the driving motor is connected to the upper end of the stirring shaft, and the stirring paddle group is vertically connected to the stirring shaft. The scraper is located at the end of the mixing paddle group away from the mixing shaft, and the scraper is used to be in contact with the inner wall of the mixing tank.

In the above scheme, under the driving action of the driving motor, the stirring shaft can be driven to rotate, and the stirring shaft rotates to drive the stirring paddle group to rotate, and causes the scraper to scrape off the material adhered to the inner wall of the tank along the circumferential direction. The mixing paddle itself can stir and mix the materials in the tank.

In some embodiments, the stirring paddle group includes a plurality of stirring paddles. The plurality of stirring paddles are spaced apart along the circumferential direction of the stirring shaft, and the scraper is connected to an end of the stirring paddle facing away from the stirring shaft.

In the above solution, the stirring paddle group includes multiple stirring paddles, which are spaced apart along the circumferential direction of the stirring shaft, so that the multiple stirring paddles can cooperate together to improve the mixing effect of the concrete in the tank.

In some embodiments, along the length direction of the stirring shaft, the number of stirring paddle groups is set to multiple groups, and the multiple groups of stirring paddle groups are spacedly distributed on the stirring shaft.

In the above scheme, by setting the number of mixing paddle groups to multiple groups, the multiple groups of mixing paddle groups work together to avoid mixing blind spots in the vertical direction of the concrete in the tank and ensure the mixing effect of the concrete in the tank.

Other features and advantages of the present application will be described in detail in the following detailed description.

Description of the drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and therefore do not It should be regarded as a limitation of the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a front cross-sectional view of a concrete mixing device for construction provided by some embodiments of the present application;

Figure 2 is an enlarged schematic diagram of A in Figure 1;

Figure 3 is a schematic diagram of the state in which the anti-clogging piece is opened when the flushing component in Figure 2 is working.

Icon: 10-mixing tank; 11-tank body; 110-stirring chamber; 12-top cover; 120-arc surface; 121-water spray chamber; 13-discharge pipe; 14-feed pipe; 20-stirring mechanism ; 21-drive motor; 22-stirring shaft; 23-stirring paddle; 24-scraper; 30-rinsing component; 31-rinsing pipeline; 32-water spray head; 33-water supply pipeline; 34-boosted water pump; 40-anti-blocking piece; 41-hinge shaft; 50-frame.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments These are part of the embodiments of this application, but not all of them. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the application provided in the appended drawings is not intended to limit the scope of the claimed application, but rather to represent selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

It should be noted that similar reference numerals and letters represent similar items in the following figures, therefore, once an item is defined in one figure, it does not need further definition and explanation in subsequent figures.

In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is customarily placed when the product of this application is used, and is only for the purpose of To facilitate the description of the present application and to simplify the description, it is not intended to 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 cannot be construed as a limitation of the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions and shall not be understood as indicating or implying relative importance.

In the description of this application, it should also be noted that, unless otherwise clearly stated and limited, the terms "set" and "connected" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection, or Integrally connected; it can be directly connected, or indirectly connected through an intermediary, or it can be internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood on a case-by-case basis.

Example

The embodiment of the present application provides a concrete mixing device for construction. Please refer to Figure 1, Figure 2 and Figure 3. The concrete mixing device for construction includes a mixing tank 10 and a mixing mechanism 20. The mixing tank 10 includes a tank body 11 and a top cover. 12. There is a stirring chamber 110 in the tank 11. The top cover 12 is located on the top of the tank 11. The bottom of the tank 11 has a discharge pipe 13. The discharge pipe 13 is coaxially arranged with the tank 11; the stirring mechanism 20 It includes a driving motor 21 and a stirring component. The driving motor 21 is arranged on the top cover 12. The stirring component is arranged in the mixing tank 10. The driving end of the driving motor 21 is connected to the stirring component for stirring the materials in the mixing tank 10. ; Among them, the concrete mixing device for construction also includes a flushing component 30. The flushing component 30 includes a flushing pipeline 31 and a plurality of water spray heads 32. The top cover 12 has a water spray cavity 121 inside, and the bottom wall of the top cover 12 is provided with a There are a plurality of water outlets communicating with the inside of the water spray chamber 121, and a plurality of water spray heads 32 are installed correspondingly in each water outlet hole; one end of the flushing pipeline 31 is connected to the water spray cavity 121, and the other end is connected to a water supply component.

In this solution, the top opening of the tank 11 can be closed by the arrangement of the top cover 12. The driving motor 21 is arranged on the top cover 12, and the driving end of the driving motor 21 is connected to the stirring assembly to stir the inside of the mixing tank 10. The materials are mixed. And by providing the flushing assembly 30, a water spray chamber 121 is formed inside the top cover 12. In this way, a plurality of water spray heads 32 are arranged on the bottom wall of the top cover 12. Under the water supply of the flush pipeline 31, Under the covering effect of the top cover 12 on the tank body 11, the multiple water spray heads 32 can quickly flush the materials adhered to the inner wall of the tank body 11. Compared with manual flushing using flushing pipes, the flushing effect is better. High, and does not require manual participation, which is more labor-saving and easier to implement.

Please continue to refer to Figure 1. The mixing tank 10 is also provided with a feed pipe 14, and the feed pipe 14 can allow materials such as cement, sand and gravel to enter. Specifically, the feed pipe 14 can be disposed on the top side wall of the tank 11 or on the top cover 12. In this embodiment, the feed pipe 14 is disposed on the top side wall of the tank 11 and is in the shape of a trumpet. . The top cover 12 and the tank body 11 are detachably connected. For example, the top cover 12 and the tank body 11 can be connected by bolts. When the inside of the tank 11 needs to be inspected and maintained, the connecting bolts between the top cover 12 and the tank 11 can be removed, and the top cover 12 can be removed to expose the internal space of the tank 11 . In addition, the shape of the tank body 11 can be cylindrical and arranged vertically, and the mixing tank can be made of various materials, such as cast iron. The driving motor 21 can be a servo motor, and its model is Y315M-2. The servo motor is connected to the commercial power through wires.

In addition, the bottom of the mixing tank 10 has a tapered structure, and the discharge pipe 13 is located at the center of the bottom of the mixing tank 10, which facilitates the discharging of the mixing tank 10. The mixing tank 10 is installed on the ground through the rack 50, and the bottom of the rack 50 A fixed plate can be provided, and high-strength bolts can be passed through the fixed plate to fix it to the ground.

In some embodiments, the water supply assembly includes a water supply pipeline 33 and a booster water pump 34. The booster water pump 34 is disposed on the water supply pipeline 33. The water outlet end of the water supply pipeline 33 is connected to the flushing pipeline 31. The booster water pump 34 is used. To pressurize the water in the water supply pipeline 33. By disposing a booster water pump 34 on the water supply pipeline 33, the booster water pump 34 can supercharge the water supply pipeline 33, so that the water entering the water spray chamber 121 is high-pressure water, and then it is sprayed out from the water spray head 32 accordingly. The water is high-pressure water, and the high-pressure water has a better flushing effect on the inner wall of the tank 11, and can clean the materials adhered to the inner wall of the tank 11, thereby reducing the probability of materials adhering to the inner wall of the tank 11.

Among them, the flushing pipeline 31 and the water supply pipeline 33 are connected through a connecting joint. When it needs to be transferred, the connecting joint can be disconnected, so that the flushing pipeline 31 and the water supply pipeline 33 are separated, and the flushing pipeline 31 is transferred together with the top cover 12 .

In some embodiments, the bottom wall of the top cover 12 is an arc-shaped surface 120 that protrudes outward. A plurality of water spray heads 32 are arrayed on the bottom wall of the top cover 12 . The cross-section of the water spray chamber 121 is correspondingly configured as Curved cavity. By providing an outwardly protruding arc-shaped surface 120 on the bottom wall of the top cover 12, the arc-shaped surface 120 enables the plurality of water spray heads 32 to spray water in a wider range, thereby achieving multi-angle coverage and flushing of the inner wall of the tank 11. , so that the flushing range of the flushing assembly 30 on the inner wall of the tank 11 is larger, and the flushing effect is correspondingly better.

In some embodiments, the water spray head 32 is provided with an anti-clogging component, and the anti-clogging component is used to prevent materials from entering the water spray head 32 when the flushing component 30 stops working. Since the concrete mixing device is mainly used to mix concrete, the materials required for concrete mixing are cement, sand and water, which have strong adhesion ability. During the mixing process of the concrete mixing device, concrete is easily splashed to the nozzle and blocks the nozzle. Affect the normal operation of the flushing component 30. Therefore, by providing an anti-clogging component at the water spray head 32, the anti-clogging component can prevent materials from entering the water spray head 32 when the flushing component 30 stops working, ensuring the subsequent flushing effect of the flushing component 30 on the mixing tank.

In some embodiments, the anti-clogging assembly includes an anti-clogging piece 40 , a hinge shaft 41 and a torsion spring (not shown in the figure). The hinge shaft 41 is provided on one side of the water spray head 32 , and the anti-clogging piece 40 passes through the hinge shaft 41 Rotatingly installed on the water spray head 32 for closing the water outlet of the water spray head 32; the torsion spring is sleeved on the hinge shaft 41, one end is connected to the water spray head 32, and the other end is connected to the anti-clogging piece 40; the anti-clogging piece 40 Compared with the water outlet of the water spray head 32, which has an open state and a closed state, when the flushing pipeline 31 is working, the water pressure of the water outlet of the water spray head 32 can drive the anti-blocking piece 40 to rotate along the axis of the hinge shaft 41 , to open the water spray head 32 and allow the torsion spring to accumulate elastic force. The elastic force is used to drive the anti-blocking piece 40 to rotate and reset to seal the water outlet of the water spray head 32 when the flushing assembly 30 stops working. By rotatably installing the anti-clogging piece 40 on the water spray head 32 through the hinge shaft 41, and having the torsion spring sleeved on the hinge shaft 41, the anti-clogging piece 40 can seal the water outlet of the water spray head 32 when the flushing assembly 30 stops working. . When the flushing pipeline 31 is working, the water pressure at the water outlet of the water spray head 32 can drive the anti-blocking piece 40 to rotate along the axis of the hinge shaft 41, thereby automatically opening the water spray head 32 and realizing the water spray head 32 to the tank 11 Cleaning of inner walls. At this time, the torsion spring accumulates elastic force, and the elastic force can drive the anti-clogging piece 40 to rotate and reset after the flushing assembly 30 is flushed, closing the water outlet of the water spray head 32 again, and providing protection to the water spray head 32. No need Human participation can automatically prevent the sprinkler head 32 from being clogged.

In some embodiments, the anti-blocking piece 40 is made of stainless steel. By making the anti-clogging piece 40 made of stainless steel, the anti-clogging piece 40 is not easily eroded by concrete.

In addition, an anti-corrosion layer can also be sprayed on the outer surface of the anti-clogging sheet 40 to extend the service life of the anti-clogging sheet 40 .

In some embodiments, the stirring assembly includes a stirring shaft 22, a set of stirring paddles 23, and a scraper 24. The stirring shaft 22 is coaxially arranged with the tank 11, and the driving end of the driving motor 21 is connected to the upper end of the stirring shaft 22. The stirring paddle The 23 sets of stirring paddles are vertically connected to the stirring shaft 22, and the scraper 24 is located at an end of the stirring paddle set 23 away from the stirring shaft 22. The scraping plate 24 is used to be in contact with the inner wall of the stirring tank. Under the driving action of the driving motor 21, the stirring shaft 22 can be driven to rotate. The stirring shaft 22 rotates to drive the stirring paddles 23 to rotate, and the scraper 24 scrapes the material adhered to the inner wall of the tank 11 along the circumferential direction. In addition, the stirring paddle 23 itself can stir and mix the materials in the tank 11.

It should be noted that when the flushing assembly is used to clean the inner wall of the tank 11, the driving motor 21 can drive the stirring assembly to work, so that the flushing assembly 30 and the stirring assembly cooperate together to further improve the flushing effect of the tank 11.

In some embodiments, the set of stirring paddles 23 includes a plurality of stirring paddles 23 . The plurality of stirring paddles 23 are spaced apart along the circumferential direction of the stirring shaft 22 . The scraper 24 is connected to an end of the stirring paddle 23 away from the stirring shaft 22 . By arranging the set of stirring paddles 23 to include a plurality of stirring paddles 23 spaced apart along the circumferential direction of the stirring shaft 22, the plurality of stirring paddles 23 can cooperate together to improve the mixing effect of the concrete in the tank 11.

In some embodiments, along the length direction of the stirring shaft 22 , the number of the stirring paddles 23 is set to multiple groups, and the multiple sets of stirring paddles 23 are distributed at intervals on the stirring shaft 22 . By setting the number of the 23 groups of mixing paddles to multiple groups, and the multiple groups of 23 mixing paddles working together, a mixing blind spot in the vertical direction of the concrete in the tank 11 is avoided, and the mixing effect of the concrete in the tank 11 is ensured.

Among them, in the vertical direction, the scraper 24 can be commonly connected with multiple stirring blades 23 , that is, the multiple stirring blades 23 share the same scraper 24 .

In some embodiments, the lower end of the stirring shaft 22 at least partially extends into the discharge pipe 13 , and the lower section of the stirring shaft 22 is provided with a spiral blade (not shown in the figure), and the spiral blade at least partially extends into the discharge pipe 13 inside, and there is a gap between the outer edge of the spiral blade and the inner wall of the discharge pipe 13. The lower section of the stirring shaft 22 is provided with a spiral blade, which extends at least partially into the discharge pipe 13. In this way, when the concrete is discharged, the spiral blade can stir and discharge the concrete in the feed pipe 14, reducing the discharge rate. The probability of blockage in material pipe 13.

Among them, the discharge pipe 13 is provided with a valve, and the valve is used to control the opening and closing of the discharge pipe 13 .

When this solution is used, firstly, during the mixing operation, the corresponding materials are injected into the mixing tank, and then the motor 21 is driven to work, driving the stirring shaft 22 to rotate, thereby driving the stirring paddle 23 and the scraper 24 to rotate in turn, and then the inside of the mixing tank is The materials are mixed and stirred. After the mixing is completed, the discharging pipe 13 is used to discharge the material. After the discharging is completed, the mixing tank is flushed. Keep the mixing assembly working, open the flushing assembly 30, and the water outlet nozzle sprays high-pressure water. The high-pressure water covers the inner wall of the tank 11 and cooperates with the scraper 24 on the mixing assembly to scrape the concrete bonded on the inner wall of the mixing tank. At this time, the discharge pipe 13 is in a closed state. After flushing for a period of time, the mixing tank may store a certain amount of water, so that under the stirring action of the stirring component, the flushing effect is better. After completing the cleaning of the mixing tank, Open the discharge pipe 13 and drain the water.

It should be noted that, as long as there is no conflict, the features in the embodiments of this application can be combined with each other.

The above descriptions are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

Claims (9)

1. A concrete mixing device for construction, comprising:

the stirring tank comprises a tank body and a top cover, wherein a stirring cavity is formed in the tank body, the top cover is covered on the top of the tank body, a discharging pipe is arranged at the bottom of the tank body, and the discharging pipe and the tank body are coaxially arranged;

the stirring mechanism comprises a driving motor and a stirring assembly, wherein the driving motor is arranged on the top cover, the stirring assembly is arranged in the stirring tank, and the driving end of the driving motor is connected with the stirring assembly and is used for stirring materials in the stirring tank; wherein,

the water spraying device comprises a top cover, a water spraying cavity and a flushing assembly, wherein the top cover is provided with a plurality of water spraying holes communicated with the inner part of the water spraying cavity, and the water spraying heads are correspondingly arranged in the water spraying holes; one end of the flushing pipeline is communicated with the water spraying cavity, and the other end of the flushing pipeline is connected with a water supply assembly.

2. The concrete mixing plant for construction according to claim 1, wherein the water supply assembly comprises a water supply line and a booster pump, the booster pump being provided on the water supply line, a water outlet end of the water supply line being in communication with the flushing line, the booster pump being for pressurizing water in the water supply line.

3. The concrete stirring device for construction according to claim 1, wherein the bottom wall of the top cover is an arc surface protruding outwards, the plurality of sprinkler heads are distributed on the bottom wall of the top cover, and the cross section of the water spraying cavity is correspondingly arranged as an arc cavity.

4. The concrete mixing plant for construction according to claim 1, wherein the water spray head is provided with an anti-blocking assembly for preventing material from entering the water spray head when the flushing assembly is stopped.

5. The concrete mixing device for construction according to claim 4, wherein the anti-blocking assembly comprises an anti-blocking piece, a hinge shaft and a torsion spring, the hinge shaft is arranged at one side of the sprinkler head, and the anti-blocking piece is rotatably installed at the sprinkler head through the hinge shaft so as to be used for sealing a water outlet of the sprinkler head; the torsion spring is sleeved on the hinge shaft, one end of the torsion spring is connected with the water spraying head, and the other end of the torsion spring is connected with the anti-blocking piece;

the anti-blocking piece is provided with an opening state and a closing state compared with the water outlet of the water spray head, when the flushing pipeline works, the water pressure of the water outlet of the water spray head can drive the anti-blocking piece to rotate along the axis direction of the hinge shaft so as to open the water spray head and enable the torsion spring to accumulate elastic force, and the elastic force is used for driving the anti-blocking piece to rotate and reset to close the water outlet of the water spray head when the flushing assembly stops working.

6. The concrete mixing device for construction according to claim 5, wherein the anti-blocking sheet is made of stainless steel.

7. The concrete stirring device for construction use according to claim 1, wherein the stirring assembly comprises a stirring shaft, a stirring paddle set and a scraping plate, the stirring shaft is coaxially arranged with the tank body, the driving end of the driving motor is connected with the upper end of the stirring shaft, the stirring paddle set is vertically connected with the stirring shaft, the scraping plate is located at one end, far away from the stirring shaft, of the stirring paddle set, and the scraping plate is used for being attached to the inner wall of the stirring tank.

8. The concrete mixing device for construction according to claim 7, wherein the mixing blade group includes a plurality of mixing blades, the plurality of mixing blades are spaced apart along the circumferential direction of the mixing shaft, and the scraper is connected to one end of the mixing blade which is away from the mixing shaft.

9. The concrete mixing device for construction according to claim 8, wherein the number of the stirring paddle sets is plural, and plural sets of the stirring paddle sets are arranged on the stirring shaft at intervals along the length direction of the stirring shaft.