A concrete mixing apparatus for civil engineering construction and a control method thereof

Abstract

The application discloses a kind of civil engineering building concrete mixing equipment and control method thereof, to provide a kind of can carry out real-time control to water intake, mixing effect is good and practicality is strong, the civil engineering building concrete mixing equipment of simple structure, its technical scheme main point is that the opposite side of the driving device of jar body is equipped with water supply device, the water supply device includes the water inlet cavity being set on jar body, the water inlet being communicated with water inlet cavity, the water quantity adjusting device being set between water inlet cavity and jar body and the rotating device for driving jar body rotation, using the structure setting, by cooperating water supply device, the water of cement in jar body can be controlled, ensure the practical effect of jar body when stirring, realize that material can be fully and uniformly stirred in real time, practicality is strong, simple structure, the application is applicable to the technical field of building construction equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment for building construction, and more specifically, it relates to a concrete mixing apparatus for civil engineering construction and a control method thereof. Background Art

[0002] Concrete, abbreviated as "砼", dates back to ancient times, and the cementing materials used therein were clay, lime, gypsum, volcanic ash and the like. Concrete itself is made by mixing and stirring a plurality of raw materials according to a certain ratio, and different raw materials and different ratios will have a great influence on the properties of the concrete. Concrete mixing plant equipment is a building material manufacturing equipment composed of five major component systems: a mixing main unit, a material weighing system, a material conveying system, a material storage system, a control system, and other auxiliary facilities. Its main working principle is to use cement as a cementing material, mix and stir raw materials such as sand and gravel, lime, and cinder, and finally produce concrete.

[0003] At present, the concrete mixing apparatus for civil engineering construction on the market comprises a tank body, a stirrer arranged in the tank body, and a driving device arranged on one side of the tank body for driving the stirrer to rotate. The traditional concrete mixing apparatus for civil engineering construction adds water additionally and then stirs the materials, but this method cannot control the water amount in time, and will result in insufficient viscosity of the cement due to excessive water amount, or excessive viscosity due to insufficient water amount, so real-time control over the water amount is required. Summary of the Invention

[0004] In view of the deficiencies existing in the prior art, an object of the present invention is to provide a concrete mixing apparatus for civil engineering construction which can control the water inflow in real time, has good mixing effect, strong practicability and simple structure.

[0005] To achieve the above object, the present invention provides the following technical solution: a concrete mixing apparatus for civil engineering construction, comprising a tank body, a stirrer arranged in the tank body, and a driving device arranged on one side of the tank body for driving the stirrer to rotate, wherein a water supply device is arranged on the opposite side of the tank body to the side where the driving device is arranged, and the water supply device comprises a water inlet cavity arranged on the tank body, a water inlet communicated with the water inlet cavity, a water amount adjusting device arranged between the water inlet cavity and the tank body, and a rotating device for driving the tank body to rotate.

[0006] The present invention is further configured as follows: the water amount adjusting device comprises a lifting rod arranged in the water inlet cavity, a plurality of circular plates arranged on the lifting rod, and a lifting oil cylinder for driving the lifting rod to ascend and descend, wherein each of the circular plates is configured such that the distance between each circular plate and the tank body gradually increases from the direction of the feeding port of the tank body to the direction of the discharging port, the gap of the distance between each circular plate and the tank body is between 5cm and 10cm, and the difference value of the gaps between two adjacent circular plates and the tank body is 2cm.

[0007] The present invention is further configured such that: the water volume regulating device includes a stepped structure disposed on the inner wall of the tank inlet end, a distribution disc disposed at the liquid inlet end and adapted to the inner diameter of the tank, and a lifting cylinder for controlling the lifting and lowering of the distribution disc. Under the lifting and lowering drive of the lifting cylinder, the distribution disc forms a gap with different spacing with the stepped structure of the tank, and the gap becomes smaller towards the tank inlet end. The difference between two adjacent steps is 2cm, and the gap formed between the distribution disc and the stepped structure of the tank is between 5cm and 10cm.

[0008] The present invention is further configured such that: the rotating device includes a first rotary seal between the water inlet chamber and the tank body, a second rotary seal disposed between the stirrer and the tank body, and a rotary motor for driving the tank body to rotate, wherein the output end of the rotary motor is connected to an external transmission gear disposed on the outer wall of the tank body via a transmission gear.

[0009] The invention is further configured such that: the inlet of the water inlet cavity is connected to a slow-flow control structure, the slow-flow control structure includes a main channel on the inner wall of the inlet, a branch channel on the inner wall of the main channel, and a slow-flow controller between the main channel and the branch channel for controlling the flow rate or reducing impact. The slow-flow controller includes an installation chamber on the main channel, a movable plug in the installation chamber that blocks the inlet of the branch channel when no force is applied, a piston rod that is in contact with the movable plug and placed in the installation chamber, an adjustment housing at the bottom of the installation chamber and sleeved outside the piston rod, and an adjustment structure between the adjustment housing and the piston rod. The adjustment structure includes an inner chamber in the adjustment housing, a partition on the piston rod that abuts against the inner wall of the inner chamber, and a return spring between the adjustment housing and the movable plug. An internal airflow channel is formed between the piston rod and the adjustment housing, and the partition has a connecting channel connecting the inner chamber and the internal airflow channel.

[0010] The invention is further configured such that: the piston rod is configured such that both ends are made of rigid material and the middle section is made of flexible material, and the flexibility of the middle end gradually decreases from the middle to both sides, so that when the shock absorber is subjected to force, the middle section of the shock absorber forms an elastic outward expansion.

[0011] The present invention is further configured such that the tilt angle of the tank is between 0 degrees and 90 degrees.

[0012] By adopting the above technical solution, the following benefits are achieved: 1. A water supply device is provided on the opposite side of the driving device in the tank. The water supply device includes a water inlet chamber on the tank, a water inlet communicating with the water inlet chamber, a water volume regulating device between the water inlet chamber and the tank, and a rotating device for driving the tank to rotate. With the above structure, the amount of water added to the cement in the tank can be controlled by the water supply device, ensuring the practical effect of the tank during mixing, and enabling the material to be fully and evenly mixed in real time. It is highly practical and has a simple structure.

[0013] 2. Further, the water volume adjustment device includes a lifting rod installed in the water inlet chamber, several circular plates installed on the lifting rod, and a lifting cylinder for driving the lifting rod to rise and fall. Each of the circular plates is configured such that the distance between each circular plate and the tank gradually increases from the direction of the tank inlet to the direction of the outlet, and the distance between each circular plate and the tank is between 5cm and 10cm. The difference in the distance between two adjacent circular plates and the tank is 2cm. This application adopts a structure of multiple circular plates and adjusts the outer diameter of different circular plates according to the requirements of the lifting cylinder. The water inlet needs to be located between two adjacent circular plates. With the above structure, the water can flow along the inner wall of the rotating cylinder after entering, so that the water flow can form a state of wrapping the material. The water flow is more uniform, and the material can also form sufficient contact with the water under rotation, thereby accelerating the formation of cement. It is practical and simple in structure.

[0014] 3. To reduce the impact of water flow during water intake, a flow control structure is connected to the inlet of the inlet chamber. This flow control structure is further configured to include a main channel on the inner wall of the inlet, a branch channel on the inner wall of the main channel, and a flow controller between the main channel and the branch channel for controlling flow velocity or reducing impact. The flow controller includes an installation chamber on the main channel, a movable plug within the installation chamber that blocks the inlet of the branch channel when not under force, a piston rod connected to the movable plug and placed within the installation chamber, an adjusting housing at the bottom of the installation chamber and sleeved around the piston rod, and an adjusting structure between the adjusting housing and the piston rod. The above-described structure... The structure can be configured such that a movable plug and piston rod structure can be formed within the regulating housing. Further, the regulating structure can be configured to include an inner chamber within the regulating housing, a partition on the piston rod that abuts against the inner wall of the inner chamber, and a return spring between the regulating housing and the movable plug. An internal airflow channel is formed between the piston rod and the regulating housing. The partition has a connecting channel between the inner chamber and the internal airflow channel. Because the partition has a connecting channel, when the stressed part is subjected to instantaneous force, the air pressure in the rodless chamber of the inner chamber increases, and the air enters the internal airflow channel through the connecting channel. However, the flow rate of the internal airflow channel is relatively small, resulting in the airflow in the rodless chamber of the inner chamber not being able to flow in time, thus creating a slow flow effect.

[0015] 4. Furthermore, the piston rod is configured with rigid materials at both ends and a flexible material in the middle section, with the flexibility of the middle section gradually decreasing from the center to both sides. When the shock absorber is under stress, the middle section of the shock absorber expands elastically. With the above-mentioned structural configuration, because the piston rod structure is a structure with a soft middle and rigid ends, when the ends are under stress, the flexible middle part is squeezed, thereby achieving a closed state of the internal airflow channel. When the water pressure is high, a greater degree of slow flow can be formed, thereby improving the control of water volume and facilitating the subsequent mixing of cement.

[0016] A control method applicable to the above-mentioned concrete mixing equipment for civil engineering construction, wherein the rotating device is equipped with a rotational resistance tester for detecting the resistance when the motor rotates, and also includes a controller, the controller including a receiving unit for receiving the resistance value when the motor rotates; a motor control unit for controlling the motor speed and torque; a hydraulic cylinder control unit for controlling the lifting and lowering of the hydraulic cylinder to control the water flow; and a timing unit for recording the mixing time after quantitative water addition;

[0017] The specific control method is as follows: S1, set the preset resistance value P to be achieved by the rotary resistance tester and the resistance value P0 to be controlled for the water flow rate.

[0018] S2. Pour the materials required for cement production, such as sand and cement ash, into the tank and drive the drive and rotation devices to stir them.

[0019] S3. After the materials in the tank are mixed evenly, the resistance value of the motor shaft of the drive device during rotation is monitored in real time by a rotational resistance tester.

[0020] S3. During the time period T1, water is continuously added to the tank gradually, and the resistance value is monitored by a rotary resistance tester. The detected value is P1. P1 is compared with the preset resistance value P to determine whether the resistance value P1 is greater than or equal to the preset resistance value P0. If the value of P1 is less than P0, water needs to be added continuously. If the value of P1 is greater than P0 and less than P, the lifting cylinder needs to be driven to control the reduction of the water inflow.

[0021] S4. During the time period Ts, the resistance value of the drive device is monitored in real time by a rotary resistance tester, and the detected value is Ps. At this time, the magnitude between Ps and P is determined.

[0022] S5. If Ps is less than P, the lifting cylinder needs to be driven to continue controlling the reduction of water inflow, and then return to step S4.

[0023] S6. If Ps is greater than or equal to P, the water inlet pipe needs to be shut off and continuous stirring should be carried out for 20-30 minutes.

[0024] S7. Complete cement mixing and processing.

[0025] By adopting the above technical solution, the present invention achieves beneficial effects by real-time monitoring of the rotational resistance value during mixing, setting the required resistance value and the resistance value for controlling the water flow rate, using the above two values ​​as monitoring standards, and through real-time water flow control, forming a good mixing operation for cement, requiring fewer variables to be controlled, and achieving the mixing uniformity of rated materials by controlling only the water, which is highly practical and the control method is simple. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an embodiment 1 of the present invention, which describes a concrete mixing equipment and its control method for civil engineering construction.

[0027] Figure 2 This is a schematic diagram of an embodiment 2 of the present invention, which describes a concrete mixing equipment and its control method for civil engineering construction.

[0028] Figure 3 This is a schematic diagram of the flow control structure of a concrete mixing equipment and its control method for civil engineering construction according to the present invention.

[0029] In the attached diagram, the following labels are used: 1. Tank body; 10. Drive device; 20. Water inlet chamber; 21. Water inlet; 22. Lifting rod; 220. Circular plate; 221. Lifting cylinder; 30. Rotary seal; 31. Rotary motor; 40. Main channel; 41. Branch channel; 401. Installation chamber; 402. Movable plug; 403. Piston rod; 404. Adjusting housing; 405. Inner chamber; 406. Separator; 407. Return spring; 408. Inner airflow channel; 409. Connecting channel; 410. Air outlet; 50. Stepped structure; 51. Distribution disc. Detailed Implementation

[0030] Reference Figures 1 to 3 The present invention provides a further description of an embodiment of a concrete mixing equipment and its control method for civil engineering construction.

[0031] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0032] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0033] Example 1

[0034] A concrete mixing device for civil engineering construction includes a tank 1, a mixer disposed within the tank 1, and a drive device 10 for driving the mixer to rotate and positioned on one side of the tank 1. A water supply device is provided on the opposite side of the tank 1 where the drive device 10 is located. This water supply device includes a water inlet chamber 20 disposed on the tank 1, a water inlet 21 communicating with the water inlet chamber 20, a water volume regulating device disposed between the water inlet chamber 20 and the tank 1, and a rotating device for driving the tank 1 to rotate. Further, the tank 1 is configured to house the drive device. A water supply device is provided on the opposite side of tank 1, which enables real-time control of the water supply. The water supply device includes a water inlet chamber 20 on tank 1, a water inlet 21 communicating with the water inlet chamber 20, a water volume regulating device between the water inlet chamber 20 and tank 1, and a rotating device for driving tank 1 to rotate. With the above structure, in conjunction with the water supply device, the amount of water added to the cement in tank 1 can be controlled, ensuring the practical effect of tank 1 during mixing, and enabling the material to be fully and evenly mixed in real time. It is highly practical and has a simple structure.

[0035] The present invention is further configured such that the water volume regulating device includes a lifting rod 22 disposed in the water inlet chamber 20, a plurality of circular plates 220 disposed on the lifting rod 22, and a lifting cylinder 221 for driving the lifting rod 22 to rise and fall. Each of the circular plates 220 is configured such that the distance between each circular plate 220 and the tank body 1 gradually increases from the direction of the tank body 1's inlet to the direction of the outlet, and the distance between each circular plate 220 and the tank body 1 is between 5cm and 10cm, with a difference in distance between two adjacent circular plates 220 and the tank body 1 of 2cm. The water volume regulating device further includes a lifting rod 22 disposed in the water inlet chamber 20, a plurality of circular plates 220 disposed on the lifting rod 22, and a lifting cylinder 221 for driving the lifting rod 22 to rise and fall. Each of the circular plates 220 is configured such that the distance between each circular plate 220 and the tank body 1 gradually increases from the direction of the tank body 1's inlet to the direction of the outlet, and the distance between each circular plate 220 and the tank body 1 is between 5cm and 10cm, with a difference in distance between two adjacent circular plates 220 and the tank body 1 of 2cm. The distance between plate 220 and tank 1 gradually increases from the inlet to the outlet of tank 1, and the distance between each circular plate 220 and tank 1 is between 5cm and 10cm. The difference in distance between two adjacent circular plates 220 and tank 1 is 2cm. This application adopts a structure of multiple circular plates 220, and adjusts the outer diameter of different circular plates 220 by setting up lifting cylinder 221. The water inlet 21 needs to be between two adjacent circular plates 220. With the above structure, water can flow along the inner wall of the rotating cylinder after entering, so that the water flow can form a state of wrapping the material. The water flow is more uniform, and the material can also make full contact with the water under rotation, thereby accelerating the formation of cement. It is practical and simple in structure.

[0036] The present invention is further configured such that the rotating device includes a first rotary seal 30 between the water inlet chamber 20 and the tank 1, a second rotary seal 30 disposed between the stirrer and the tank 1, and a rotary motor 31 for driving the tank 1 to rotate. The output end of the rotary motor 31 is connected to an external transmission gear disposed on the outer wall of the tank 1 via a transmission gear.

[0037] The present invention is further configured such that the inlet 21 connected to the inlet chamber 20 is connected to a flow control structure. This flow control structure includes a main channel 40 disposed on the inner wall of the inlet 21, a branch channel 41 disposed on the inner wall of the main channel 40, and a flow controller disposed between the main channel 40 and the branch channel 41 for controlling flow velocity or reducing impact. The flow controller includes an installation chamber 401 disposed on the main channel 40, a movable plug 402 disposed within the installation chamber 401 that blocks the inlet of the branch channel 41 when no force is applied, and a piston rod 403 that is in contact with the movable plug 402 and placed within the installation chamber 401. An adjusting housing 404 is disposed at the bottom of the mounting chamber 401 and sleeved outside the piston rod 403, and an adjusting structure is disposed between the adjusting housing 404 and the piston rod 403. The adjusting structure includes an inner chamber 405 disposed within the adjusting housing 404, a partition 406 disposed on the piston rod 403 and abutting against the inner wall of the inner chamber 405, and a return spring 407 disposed between the adjusting housing 404 and the movable plug 402. An internal airflow channel 408 is formed between the piston rod 403 and the adjusting housing 404, and a connecting channel 409 is provided on the partition 406 to connect the inner chamber 405 and the internal airflow channel 408.

[0038] To reduce the impact of water flow during water intake, a flow control structure is connected to the inlet 21, which connects to the inlet chamber 20. This flow control structure includes a main channel 40 on the inner wall of the inlet 21, a branch channel 41 on the inner wall of the main channel 40, and a flow controller located between the main channel 40 and the branch channel 41 for controlling flow velocity or reducing impact. The flow controller includes a mounting chamber 401 on the main channel 40, and a component located within the mounting chamber 401 that is not subjected to force. In this configuration, a movable plug 402 is used to block the inlet of the branch channel 41. A piston rod 403, connected to and abutting against the movable plug 402 and placed within the mounting chamber 401, is used. An adjusting housing 404 is located at the bottom of the mounting chamber 401 and sleeved around the piston rod 403. An adjusting structure is then positioned between the adjusting housing 404 and the piston rod 403. With this configuration, the movable plug 402 and piston rod 403 create movement within the adjusting housing 404. Furthermore, the adjusting structure can be further adjusted... The system includes an inner chamber 405 disposed within the adjusting housing 404, a partition 406 disposed on the piston rod 403 and abutting against the inner wall of the inner chamber 405, and a return spring 407 disposed between the adjusting housing 404 and the movable plug 402. An internal airflow channel 408 is formed between the piston rod 403 and the adjusting housing 404. The partition 406 has a connecting channel 409 that connects the inner chamber 405 and the internal airflow channel 408. Because the partition 406 has a connecting channel 409, when the stressed part is subjected to instantaneous force... The air pressure in the rodless chamber of the inner cavity 405 increases and enters the inner airflow channel 408 through the connecting flow channel 409. However, the flow rate of the inner airflow channel 408 is small, which causes the airflow in the rodless chamber of the inner cavity 405 to not flow in time, thus forming a slow flow effect. Furthermore, an air outlet 410 is provided at the end of the piston rod 403, which realizes the airflow passage and ensures the constant regulation of the airflow. Moreover, the movable plug 402 and the piston rod 403 are in contact, so there is room for movement, which facilitates subsequent adjustment.

[0039] The invention is further configured such that the piston rod 403 is made of rigid material at both ends and flexible material in the middle section, with the flexibility of the middle section gradually decreasing from the middle to both sides. When the shock absorber is subjected to force, the middle section of the shock absorber forms an elastic outward expansion. By adopting the above structural configuration, because the piston rod 403 has a structure that is soft in the middle and rigid at both ends, when the two ends are subjected to force, the flexible part in the middle is squeezed, thereby achieving a closed state of the internal airflow channel 408. When the water pressure is high, a greater degree of slow flow can be formed, thereby improving the control of water volume and facilitating the subsequent mixing of cement.

[0040] The present invention is further configured such that the tilt angle of the tank body 1 is between 0 degrees and 90 degrees. With the above-mentioned structural configuration, the tilt angle of the tank body 1 can be adjusted, and the flow rate of the water can be controlled, thereby controlling the amount of water entering the tank. This invention is highly practical, improves the molding effect of cement, and has a simple structure.

[0041] In this application, the fixing method of the tank 1 and the rotary motor 31 is not described in the accompanying drawings. The fixing method is a conventional technical means for those skilled in the art, and will not be described in detail here.

[0042] Secondly, the cement can be removed by taking off the water supply device and then pouring the material, or conversely, by removing the drive part on one side of the mixer and then pouring the material. These are all conventional techniques for those skilled in the art and will not be described in detail in this invention.

[0043] Example 2

[0044] This embodiment is basically the same as Embodiment 1 in structure. The only difference is that in this embodiment, the water volume regulating device is set to include a stepped structure 50 set on the inner wall of the inlet end of the tank 1, a distribution disc 51 set at the material inlet end and adapted to the inner diameter of the tank 1, and a lifting cylinder 221 for controlling the lifting and lowering of the distribution disc 51. Under the lifting and lowering drive of the lifting cylinder 221, the distribution disc 51 forms a gap with different spacings with the stepped structure 50 of the tank 1, and the gaps become smaller towards the inlet end of the tank 1. The difference between two adjacent steps is 2cm, and the gap between the distribution disc 51 and the stepped structure 50 of the tank 1 is between 5cm and 10cm. By setting the stepped structure 50 on the inner wall of the tank 1, the stepped structure 50 and the distribution disc 51 can form gaps with different differences, thereby controlling different flow rates and ensuring a good stirring effect. It is highly practical and has a simple structure.

[0045] A control method applicable to the above-mentioned concrete mixing equipment for civil engineering construction, wherein the rotating device is equipped with a rotational resistance tester for detecting the resistance when the motor rotates, and also includes a controller, the controller including a receiving unit for receiving the resistance value when the motor rotates; a motor control unit for controlling the motor speed and torque; a cylinder control unit for controlling the lifting and lowering of the lifting cylinder 221 to control the water flow rate; and a timing unit for recording the mixing time after quantitative water addition;

[0046] The specific control method is as follows: S1, set the preset resistance value P to be achieved by the rotary resistance tester and the resistance value P0 to be controlled for the water flow rate.

[0047] S2. Pour the materials required for cement manufacturing, such as sand and cement ash, into the tank 1, and drive the drive device 10 and the rotating device to stir.

[0048] S3. After the materials in tank 1 are mixed evenly, the resistance value of the motor shaft of drive device 10 during rotation is monitored in real time by a rotational resistance tester.

[0049] S3. During the time period T1, water is continuously added to the tank 1 gradually, and the resistance value is monitored by a rotary resistance tester. The detected value is P1. P1 is compared with the preset resistance value P to determine whether the resistance value P1 is greater than or equal to the preset resistance value P0. If the value of P1 is less than P0, water needs to be added continuously. If the value of P1 is greater than P0 and less than P, the lifting cylinder 221 needs to be driven to control the reduction of the water inflow.

[0050] S4. During the Ts time period, the resistance value of the drive device 10 is monitored in real time by a rotary resistance tester, and the detected value is Ps. At this time, the magnitude between Ps and P is determined.

[0051] S5. If Ps is less than P, then the lifting cylinder 221 needs to be driven to continue controlling the reduction of water inflow, and return to step S4.

[0052] S6. If Ps is greater than or equal to P, the water inlet pipe needs to be shut off and continuous stirring should be carried out for 20-30 minutes.

[0053] S7. Complete cement mixing and processing.

[0054] By adopting the above technical solution, the present invention achieves beneficial effects by real-time monitoring of the rotational resistance value during mixing, setting the required resistance value and the resistance value for controlling the water flow rate, using the above two values ​​as monitoring standards, and through real-time water flow control, forming a good mixing operation for cement, requiring fewer variables to be controlled, and achieving the mixing uniformity of rated materials by controlling only the water, which is highly practical and the control method is simple.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included within the protection scope of the present invention.

Claims

1. A concrete mixing equipment for civil engineering construction, comprising a tank (1), a mixer disposed within the tank (1), and a drive device (10) for driving the mixer to rotate and disposed on one side of the tank (1), characterized in that, The tank (1) is provided with a water supply device for controlling the water inlet on the opposite side of the driving device (10). The water supply device includes a water inlet chamber (20) provided on the tank (1), a water inlet (21) communicating with the water inlet chamber (20), a water volume adjustment device provided between the water inlet chamber (20) and the tank (1), and a rotating device for driving the tank (1) to rotate. The inlet (21) connected to the inlet cavity (20) is connected to a flow control structure. The flow control structure includes a main channel (40) disposed on the inner wall of the inlet (21), a branch channel (41) disposed on the inner wall of the main channel (40), and a flow controller disposed between the main channel (40) and the branch channel (41) for controlling the flow velocity or reducing the impact. The flow controller includes a mounting chamber (401) disposed on the main channel (40), a movable plug (402) disposed in the mounting chamber (401) and blocking the inlet of the branch channel (41) when no force is applied, a piston rod (403) abutting against the movable plug (402) and placed in the mounting chamber (401), and a piston rod (403) disposed at the bottom of the mounting chamber (401) and sleeved on the movable plug. The adjustment housing (404) outside the piston rod (403) and the adjustment structure disposed between the adjustment housing (404) and the piston rod (403) include an inner cavity (405) disposed in the adjustment housing (404), a partition (406) disposed on the piston rod (403) and abutting against the inner wall of the inner cavity (405), and a return spring (407) disposed between the adjustment housing (404) and the movable plug (402). An internal airflow channel (408) is formed between the piston rod (403) and the adjustment housing (404). The partition (406) has a connecting channel (409) connecting the inner cavity (405) and the internal airflow channel (408). An air outlet (410) is provided at the end of the piston rod (403).

2. The concrete mixing equipment for civil engineering construction according to claim 1, characterized in that, The water volume regulating device includes a lifting rod (22) disposed in the water inlet chamber (20), a plurality of circular plates (220) disposed on the lifting rod (22), and a lifting cylinder (221) for driving the lifting rod (22) to lift. Each of the circular plates (220) is configured such that the distance between each circular plate (220) and the tank (1) gradually increases from the driving device (10) toward the water inlet (21), and the gap between each circular plate (220) and the tank (1) is between 5cm and 10cm, and the gap difference between two adjacent circular plates (220) and the tank (1) is 2cm.

3. The concrete mixing equipment for civil engineering construction according to claim 1, characterized in that, The water volume regulating device includes a stepped structure (50) set on the inner wall of the inlet end of the tank (1), a distribution disc (51) set at the water inlet and adapted to the inner diameter of the tank (1), and a lifting cylinder (221) for controlling the lifting of the distribution disc (51). Under the lifting and lowering drive of the lifting cylinder (221), the distribution disc (51) forms a gap with the stepped structure (50) of the tank (1) at different intervals, and the gap is smaller towards the inlet end of the tank (1). The height difference between two adjacent steps is 2cm, and the gap formed between the distribution disc (51) and the stepped structure (50) of the tank (1) is between 5cm and 10cm.

4. A concrete mixing equipment for civil engineering construction according to claim 2 or 3, characterized in that, The rotating device includes a first rotary seal (30) between the water inlet chamber (20) and the tank (1), a second rotary seal between the stirrer and the tank (1), and a rotary motor (31) for driving the tank (1) to rotate. The output end of the rotary motor (31) is connected to the external transmission gear on the outer wall of the tank (1) through a transmission gear.

5. A concrete mixing equipment for civil engineering construction according to claim 2 or 3, characterized in that, The piston rod (403) is configured such that both ends are made of rigid material and the middle section is made of flexible material, and the flexibility of the middle section gradually decreases from the middle to both sides. When the piston rod is subjected to force, the middle section of the piston rod forms an elastic outward expansion.

6. A concrete mixing device for civil engineering construction according to claim 2 or 3, characterized in that, The tilt angle of the tank (1) is between 0 degrees and 90 degrees.

7. A control method applicable to the concrete mixing equipment for civil engineering construction as described in any one of claims 2-6, characterized in that, The rotating device includes a rotational resistance tester for detecting the resistance when the motor rotates, and a controller. The controller includes a receiving unit for receiving the resistance value when the motor rotates; a motor control unit for controlling the motor speed and torque; a cylinder control unit for controlling the lifting cylinder (221) to lift and control the water flow; and a timing unit for recording the stirring time after quantitative water addition. The specific control method is as follows: S1, set the preset resistance value P to be achieved by the rotary resistance tester and the resistance value P0 to be controlled for the water flow rate. S2. Pour the materials required for concrete making, such as sand and cement ash, into the tank (1) and drive the drive device (10) and the rotating device to stir. S3. After the materials in the tank (1) are mixed evenly, the resistance value of the motor shaft of the drive device (10) during rotation is monitored in real time by a rotation resistance tester. S4. During the T1 time period, water is continuously added to the tank (1) and the resistance value is monitored by a rotary resistance tester. The detected value is P1. P1 is compared with P0 to determine whether the resistance value P1 is greater than or equal to P0. If the value of P1 is less than P0, water needs to be added. If the value of P1 is greater than P0 and less than P, the lifting cylinder (221) needs to be driven to control the reduction of water intake. S5. During the Ts time period, the resistance value of the drive device (10) is monitored in real time by a rotary resistance tester, and the detected value is Ps. At this time, the magnitude between Ps and P is determined. S6. If Ps is less than P, then the lifting cylinder (221) needs to be driven to continue controlling the reduction of water intake and return to step S4. S7. If Ps is greater than or equal to P, the water inlet pipe needs to be shut off and continuous stirring should be carried out for 20-30 minutes. S8. Complete concrete mixing and processing.

Images