Concrete mixing device and construction process thereof

Abstract

This invention relates to the field of concrete processing technology, specifically disclosing a concrete mixing device and its construction process. The concrete mixing device includes a lower vessel, an upper vessel, and a capacity adjustment assembly. The upper vessel is installed inside and above the lower vessel, and a cover is installed on the upper vessel. At least two capacity adjustment assemblies are provided, with their upper and lower ends respectively installed on the outer walls of the lower and upper vessels. Each capacity adjustment assembly includes a fixed base, an electric telescopic rod, and a fixing plate. The fixed base is welded to the outer wall of the lower vessel, and the fixing plate is welded to the outer wall of the upper vessel. The beneficial effect of this invention is that during the capacity adjustment process, the telescopic rotating assembly also extends or retracts to meet the capacity adjustment requirements of the device, while the mixing assembly can still thoroughly and fully mix the concrete inside the device.

Description

Technical Field

[0001] This invention relates to the field of concrete processing technology, specifically to a concrete mixing device and its construction process. Background Technology

[0002] Concrete is a general term for engineering composite materials in which aggregates are bound together by cementing materials. The term "concrete" usually refers to cement concrete, also known as ordinary concrete, which is made by mixing cement as the cementing material, sand and gravel as aggregates, and water (which may contain admixtures and additives) in a certain proportion. The mixing process requires concrete mixing equipment, which is machinery that mixes cement, sand, gravel, and water to produce a concrete mixture.

[0003] For example, the invention with application number CN202011139686.4 discloses a concrete mixing device, and the invention with authorization announcement number CN112622031B discloses a concrete mixing device. The internal capacity of the device is fixed, which is difficult to adjust and not convenient for mixing and processing different amounts of concrete.

[0004] The utility model patent CN219445549U discloses a concrete mixing device with adjustable capacity. Although the internal capacity is adjustable, during capacity adjustment, the moving rod retracts the moving blades into the sleeve. This means there needs to be a significant gap between the sleeve and the moving rod to retract the blades. During this process, concrete inevitably enters the sleeve, potentially causing blockage. Reusing the retracted blades becomes problematic. Furthermore, a compression spring is required to facilitate the retraction of the moving rod and blades into the sleeve. Concrete entering the sleeve also negatively impacts the spring's function, limiting its compression and extension, resulting in poor device performance. See below. Figure 1 Furthermore, in conjunction with the specific implementation method, "

[0025] For the movable blade 11, the closer the movable blade 11 is to the sleeve 8, the longer the movable blade 11 is, so as to be stored inside the sleeve 8." In other words, the length of the movable blade 11 is not uniform, which will also cause some concrete inside the device to not be mixed, thereby lengthening the mixing time and resulting in low working efficiency of the device.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a concrete mixing device and its construction process. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a concrete mixing device and its construction process, solving the problems mentioned in the background section.

[0007] The objectives and effects of this invention are achieved by the following specific technical means:

[0008] A concrete mixing device includes a lower vessel, an upper vessel, and a capacity adjustment assembly. The upper vessel is installed inside the lower vessel and above it, and a cover is installed on the upper vessel. At least two capacity adjustment assemblies are provided, and the upper and lower ends of the capacity adjustment assemblies are respectively installed on the outer walls of the lower vessel and the upper vessel.

[0009] The capacity adjustment assembly includes a fixed base, an electric telescopic rod, and a fixing plate. The fixed base is welded to the outer wall of the lower vessel body, the fixing plate is welded to the outer wall of the upper vessel body, and the electric telescopic rod is vertically fixed between the fixed base and the fixing plate by an installation component.

[0010] A telescopic rotating assembly is installed between the lower and upper vessel bodies. The upper and lower ends of the telescopic rotating assembly are rotatably connected to the top of the upper vessel body and the bottom of the lower vessel body, respectively. A stirring assembly is installed on the outside of the telescopic rotating assembly.

[0011] Furthermore, a servo motor is fixed to the top of the cover, and the upper end of the telescopic rotating component is sealed through the upper vessel body and the cover and is fixedly connected to the output shaft of the servo motor.

[0012] The telescopic rotating assembly includes an outer tube and a telescopic inner rod. Several outer tubes and several telescopic inner rods are provided. The several outer tubes and several telescopic inner rods are alternately distributed. The telescopic inner rods are sealed and slidably connected to the adjacent outer tubes. The lowermost outer tube is rotatably connected to the bottom of the lower vessel body. The uppermost outer tube is sealed through the upper vessel body and the cover body and is fixedly connected to the output shaft of the servo motor.

[0013] Furthermore, the stirring assembly includes stirring rods and auxiliary rods, each having several stirring rods. The stirring rods are horizontally fixed to several outer sleeves. Two sliding grooves are formed on the upper and lower outer edges of each stirring rod. Every two auxiliary rods are rotatably connected by a connecting shaft to form an auxiliary rod with an "X" shape. The auxiliary rods are distributed alternately with the stirring rods. The inner end of each auxiliary rod is hinged to the stirring rod, and the outer end is hinged to a slider. The slider is slidably connected to the adjacent sliding grooves.

[0014] Furthermore, the stirring assembly also includes descaling plates, at least two of which are fixed to the lower part of the outer wall of the telescopic rotating assembly, and the bottom of each descaling plate is in close contact with the bottom of the lower vessel body.

[0015] Furthermore, a sealing assembly is installed at the lower end of the upper vessel body. The sealing assembly includes a sealing ring and a scraper. The sealing ring is fixedly connected to the upper vessel body, and the scraper is fixed below the sealing ring, with the side of the scraper tightly fitted to the inner wall of the lower vessel body.

[0016] Furthermore, a first sealing layer and a second sealing layer are fixed on the side of the sealing ring near the inner wall of the lower vessel, and the cross-sections of the first sealing layer and the second sealing layer are both "L" shaped.

[0017] Furthermore, a connecting rod is fixed above the outer wall of the telescopic rotating assembly, and a material removal plate is fixed at the top of the connecting rod. The outer side of the material removal plate is in close contact with the inner side of the upper reactor body.

[0018] Furthermore, a support column is fixed below the fixed base, and scale values ​​are provided on the outer surface of the upper vessel.

[0019] Furthermore, the cover has a feed inlet, the feed inlet is covered with a sealing cap, and a discharge pipe is installed below the lower vessel, with a valve installed on the discharge pipe.

[0020] A construction process for a concrete mixing plant includes the following specific steps:

[0021] Step 1: The fixed plate and the upper vessel body are raised and lowered together by the lifting of the electric telescopic rod, thereby expanding or contracting to adjust the capacity between the upper and lower vessels. This method is suitable for concrete mixing of different volumes.

[0022] Step 2: During capacity adjustment, the outer sleeve and the telescopic inner rod are telescopic rod structures that work together with the capacity adjustment between the upper and lower vessel bodies to extend the telescopic rotating component, which in turn drives the auxiliary rod in the stirring component to extend.

[0023] Step 3: The concrete material is fed into the interior of the upper vessel through the feed inlet. Then, the telescopic rotating component and the stirring rod are rotated by the servo motor. The inner end of the auxiliary rod with an "X" structure is hinged to the stirring rod, and the outer end is slidably connected to the groove on the stirring rod through the hinged slider. This allows the auxiliary rod to extend with the extension of the telescopic rotating component, so that the telescopic rotating component and the stirring component can still fully and thoroughly mix the concrete inside after the capacity of the device is adjusted.

[0024] Step 4: The connecting rod and the material removal plate are rotated by the telescopic rotating component, so that the material removal plate scrapes off the concrete adhering to the inner wall of the upper vessel, preventing the concrete from sticking to the inner wall of the upper vessel. The dual setting of the first sealing layer and the second sealing layer can double seal the connection between the upper vessel and the lower vessel, avoiding leakage of concrete materials.

[0025] Step 5: After the concrete mixing is completed, open the valve at the discharge pipe to discharge the concrete, and use the capacity adjustment component to drive the upper vessel to descend to the lowest position, simultaneously driving the scraper to descend and scrape off the concrete adhering to the inner wall of the lower vessel.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] This concrete mixing device is equipped with a capacity adjustment component. The electric telescopic rod can be raised and lowered to easily adjust the capacity between the upper and lower vessels, making it suitable for mixing concrete of different volumes. When the telescopic rotating component rotates, it drives the mixing component to rotate, which in turn mixes the concrete inside the device. During capacity adjustment, the telescopic rotating component also extends or retracts to meet the capacity adjustment requirements. Even after the telescopic rotating component has been adjusted, the mixing component can still thoroughly and completely mix the concrete inside the device. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall internal structure of the present invention from the front view.

[0029] Figure 2 This is a schematic diagram of the three-dimensional structure of the lower and upper vessel bodies of the present invention;

[0030] Figure 3 This is a schematic diagram of the main cross-sectional structure of the telescopic rotating component and the stirring component of the present invention;

[0031] Figure 4 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0032] Figure 5 This is a top view of the internal structure of the vessel body of the present invention.

[0033] In the diagram: 1. Lower vessel body; 2. Upper vessel body; 3. Cover; 4. Inlet; 5. Outlet pipe; 6. Capacity adjustment assembly; 601. Fixed base; 602. Electric telescopic rod; 603. Fixed plate; 7. Support column; 8. Sealing assembly; 801. Sealing ring; 802. First sealing layer; 803. Second sealing layer; 804. Scraper; 9. Servo motor; 10. Telescopic rotating assembly; 1001. Outer sleeve; 1002. Telescopic inner rod; 11. Stirring assembly; 1101. Stirring rod; 1102. Slide groove; 1103. Sliding block; 1104. Auxiliary rod; 1105. Descaling plate; 12. Connecting rod; 13. Material removal plate. Detailed Implementation

[0034] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0035] Please see Figures 1 to 5 The present invention provides a technical solution: a concrete mixing device, comprising a lower vessel 1, an upper vessel 2 and a capacity adjustment component 6, wherein the upper vessel 2 is installed inside the upper part of the lower vessel 1 and a cover 3 is installed on the upper part of the upper vessel 2, and at least two capacity adjustment components 6 are provided, wherein the upper and lower ends of the capacity adjustment components 6 are respectively installed on the outer walls of the lower vessel 1 and the upper vessel 2.

[0036] The capacity adjustment assembly 6 includes a fixed base 601, an electric telescopic rod 602, and a fixing plate 603. The fixed base 601 is welded to the outer wall of the lower vessel 1. A support column 7 is fixed below the fixed base 601. The fixing plate 603 is welded to the outer wall of the upper vessel 2. The electric telescopic rod 602 is vertically fixed between the fixed base 601 and the fixing plate 603 through an installation component.

[0037] The specific operation is as follows: the support column 7 supports the fixed base 601, and the fixed base 601 supports the electric telescopic rod 602. The electric telescopic rod 602 can be raised and lowered to drive the fixed plate 603 and the upper vessel 2 to be raised and lowered, thereby facilitating the expansion or contraction of the capacity between the upper vessel 2 and the lower vessel 1. It is suitable for concrete mixing of different volumes. The cover 3 is set so that the top of the upper vessel 2 is closed to prevent concrete from splashing out of the device.

[0038] Please see Figures 1 to 2 The cover 3 has a feed inlet 4, which is covered with a sealing cover. By opening the sealing cover on the feed inlet 4, concrete raw materials can be added into the feed inlet 4 and introduced into the device through the feed inlet 4. After adding the material, the sealing cover is closed.

[0039] Please see Figure 1 and Figure 3 A telescopic rotating assembly 10 is installed between the lower vessel 1 and the upper vessel 2. The upper and lower ends of the telescopic rotating assembly 10 are rotatably connected to the top of the upper vessel 2 and the bottom of the lower vessel 1, respectively. A stirring assembly 11 is installed on the outside of the telescopic rotating assembly 10.

[0040] Specifically, when the telescopic rotating component 10 rotates, it drives the mixing component 11 to rotate, and the mixing component 11 will mix the concrete in the device. During the capacity adjustment process, the telescopic rotating component 10 will also extend or retract to meet the capacity adjustment requirements of the device. After the telescopic rotating component 10 is extended or retracted, the mixing component 11 can still fully and thoroughly mix the concrete inside the device.

[0041] Please see Figures 1 to 2 A discharge pipe 5 is installed below the lower body 1. A valve is installed on the discharge pipe 5. After the concrete in the device is mixed, the valve on the discharge pipe 5 can be opened, and the mixed concrete can be drained out of the device through the discharge pipe 5.

[0042] Please see Figure 2 The outer surface of the upper vessel 2 is provided with scale values, which makes it easy to know the capacity between the upper vessel 2 and the lower vessel 1 in real time.

[0043] Please see Figure 1 and Figure 4 A sealing assembly 8 is installed at the lower end of the upper vessel body 2. The sealing assembly 8 includes a sealing ring 801 and a scraper 804. The sealing ring 801 is fixedly connected to the upper vessel body 2. The scraper 804 is fixed below the sealing ring 801, and the side of the scraper 804 is tightly fitted to the inner wall of the lower vessel body 1. A first sealing layer 802 and a second sealing layer 803 are fixed on the side of the sealing ring 801 near the inner wall of the lower vessel body 1. The cross-sections of the first sealing layer 802 and the second sealing layer 803 are both "L" shaped.

[0044] The sealing ring 801 uses a first sealing layer 802 and a second sealing layer 803 to double seal the connection between the upper vessel body 2 and the lower vessel body 1, which can prevent the leakage of concrete materials. The sealing ring 801 is used to protect the first sealing layer 802 and the second sealing layer 803 and support the scraper 804. During the capacity adjustment process, the scraper 804 will move along the upper vessel body 2 on the inner wall of the lower vessel body 1. The moving scraper 804 will scrape off the concrete attached to the inner wall of the lower vessel body 1.

[0045] Please see Figure 1 and Figure 3 A servo motor 9 is fixed to the top of the cover 3. The upper end of the telescopic rotating component 10 is sealed through the upper vessel body 2 and the cover 3 and is fixedly connected to the output shaft of the servo motor 9.

[0046] The telescopic rotating assembly 10 includes an outer tube 1001 and a telescopic inner rod 1002. Both the outer tube 1001 and the telescopic inner rod 1002 are provided with several tubes. The several outer tubes 1001 and the several telescopic inner rods 1002 are alternately distributed. The telescopic inner rod 1002 is sealed and slidably connected to the adjacent outer tubes 1001. The lowermost outer tube 1001 is rotatably connected to the bottom of the lower vessel 1. The uppermost outer tube 1001 is sealed and penetrates the upper vessel 2 and the cover 3 and is fixedly connected to the output shaft of the servo motor 9. The stirring assembly 11 is fixed on the outer tube 1001.

[0047] Furthermore, when the servo motor 9 is working, it will drive the telescopic rotating assembly 10 to rotate. The outer tube 1001 and the telescopic inner rod 1002 in the telescopic rotating assembly 10 will rotate synchronously. At this time, the outer tube 1001 will drive the mixing assembly 11 to rotate in the device, thereby mixing the concrete in the device. The outer tube 1001 and the telescopic inner rod 1002 are telescopic rod structures to facilitate the capacity adjustment between the upper vessel 2 and the lower vessel 1, so that the telescopic rotating assembly 10 can extend and drive the extension of the auxiliary rod 1104 on the outside.

[0048] Please see Figure 5 A connecting rod 12 is fixed on one side above the telescopic rotating component 10, and a material removal plate 13 is fixed at the top of the connecting rod 12, and the outer side of the material removal plate 13 is tightly fitted with the inner side of the upper vessel body 2.

[0049] Furthermore, when the telescopic rotating component 10 rotates, it drives the connecting rod 12 and the material removal plate 13 to rotate, so that the material removal plate 13 can scrape off the concrete attached to the inner wall of the upper vessel body 2 and prevent the inner wall of the upper vessel body 2 from sticking.

[0050] Please see Figure 1 and Figure 2 The stirring assembly 11 includes stirring rods 1101 and auxiliary rods 1104. Several stirring rods 1101 and auxiliary rods 1104 are provided. Several stirring rods 1101 are horizontally fixed on several outer sleeves 1001. Two sliding grooves 1102 are opened on the outer edges of the upper and lower sides of the stirring rods 1101. Every two auxiliary rods 1104 are rotatably connected by a connecting shaft to form an auxiliary rod with an "X" shaped structure. Several auxiliary rods are distributed alternately with several stirring rods 1101. The inner end of the auxiliary rod is hinged to the stirring rod 1101, and the outer end is hinged to a slider 1103. The slider 1103 is slidably connected in the adjacent sliding grooves 1102.

[0051] Furthermore, when the telescopic rotating component 10 rotates, it drives the stirring rod 1101 to rotate. When the auxiliary rod with the "X"-shaped structure extends with the telescopic rotating component 10, the inner end of the auxiliary rod will rotate on the corresponding stirring rod 1101 through the hinge, and the outer end of the auxiliary rod will rotate on the slider 1103, while driving the slider 1103 to slide in the corresponding groove 1102. This design allows the stirring component 11 to still perform comprehensive and thorough mixing of the internal components after the device is adjusted in capacity.

[0052] The stirring assembly 11 also includes a descaling plate 1105. At least two descaling plates 1105 are provided and are fixed to the lower part of the outer wall of the telescopic rotating assembly 10. The bottom of the descaling plates 1105 is in close contact with the bottom of the lower vessel body 1.

[0053] Furthermore, when the telescopic rotating component 10 rotates, it will also drive the descaling plate 1105 to rotate. The rotating descaling plate 1105 can stir the concrete inside the lower part of the device on the one hand, and scrape the concrete adhering to the bottom of the lower vessel 1 on the other hand, so as to prevent the concrete from sticking to the bottom of the lower vessel 1.

[0054] The present invention also provides a construction process for a concrete mixing device, comprising the following specific steps:

[0055] Step 1: The fixed plate 603 and the upper vessel 2 are raised and lowered together by the lifting and lowering of the electric telescopic rod 602, thereby expanding or contracting to adjust the capacity between the upper vessel 2 and the lower vessel 1, which is suitable for concrete mixing of different volumes.

[0056] Step 2: During capacity adjustment, the outer sleeve 1001 and the telescopic inner rod 1002 are telescopic rod structures that work together with the capacity adjustment between the upper vessel body 2 and the lower vessel body 1 to extend the telescopic rotating component 10, which in turn drives the auxiliary rod in the stirring component 11 to extend.

[0057] Step 3: The concrete material is fed into the interior of the upper vessel 2 through the feed port 4. Then, the telescopic rotating component 10 and the stirring rod 1101 are rotated by the servo motor 9. The inner end of the auxiliary rod with an "X" structure is hinged to the stirring rod 1101, and the outer end is slidably connected to the groove 1102 on the stirring rod 1101 through the hinge slider 1103. This allows the auxiliary rod to extend with the extension of the telescopic rotating component 10, so that the telescopic rotating component 10 and the stirring component 11 can still fully and thoroughly mix the concrete inside after the capacity of the device is adjusted.

[0058] Step 4: The connecting rod 12 and the material removal plate 13 are rotated by the telescopic rotating component 10, so that the material removal plate 13 scrapes off the concrete adhering to the inner wall of the upper vessel 2, preventing the inner wall of the upper vessel 2 from sticking. The dual setting of the first sealing layer 802 and the second sealing layer 803 can double seal the joint between the upper vessel 2 and the lower vessel 1 to avoid leakage of concrete materials.

[0059] Step 5: After the concrete mixing is completed, open the valve at the discharge pipe 5 to discharge the concrete, and use the capacity adjustment component 6 to drive the upper vessel 2 back to the lowest position, simultaneously driving the scraper 804 to descend and scrape off the concrete adhering to the inner wall of the lower vessel 1.

[0060] In summary, when using this concrete mixing device and its construction process, the fixed plate 603 and the upper vessel 2 can be raised and lowered by the electric telescopic rod 602 to adjust the capacity between the upper vessel 2 and the lower vessel 1, based on the required amount of concrete to be mixed. This is suitable for mixing concrete of different volumes. The outer surface of the upper vessel 2 is marked with scale values, allowing for real-time monitoring of the capacity between the upper vessel 2 and the lower vessel 1 for easy adjustment. The double sealing of the first sealing layer 802 and the second sealing layer 803 prevents concrete material from leaking out from the joint between the upper vessel 2 and the lower vessel 1. During this process, the outer sleeve 1001 and the telescopic inner rod 1002 are telescopic rod structures to facilitate the adjustment of the capacity between the upper vessel 2 and the lower vessel 1, allowing the telescopic rotating component 10 to extend. At the same time, the telescopic rotating component 10 drives the auxiliary rods on its outer side to extend.

[0061] Next, open the sealing cap on the feed inlet 4, and then feed the concrete material into the interior of the upper vessel 2 through the feed inlet 4. After adding the material, replace the sealing cap on the feed inlet 4. Then, drive the telescopic rotating component 10 to rotate via the servo motor 9, so that the outer sleeve 1001 and the telescopic inner rod 1002 can rotate synchronously. At the same time, the telescopic rotating component 10 can drive the connecting rod 12 and the material removal plate 13 to rotate, so that the material removal plate 13 can scrape off the concrete adhering to the inner wall of the upper vessel 2, preventing it from sticking to the inner wall of the upper vessel 2. When the telescopic rotating component 10 rotates, it can also drive the stirring rod 1101 to rotate in an "X" shape. The inner end of the auxiliary rod of the type structure is hinged to the stirring rod 1101, and the outer end is slidably connected to the groove 1102 on the stirring rod 1101 through the hinge slider 1103. This allows the auxiliary rod to extend with the extension of the telescopic rotating component 10, so that after the device is adjusted in capacity, the telescopic rotating component 10 and the stirring component 11 can still fully and thoroughly mix the internal concrete. After the mixing is completed, the valve at the discharge pipe 5 is opened to discharge the material, and the upper vessel 2 is lowered back, so that the scraper 804 descends to scrape the concrete attached to the inner wall of the lower vessel 1. This completes the use process of the entire concrete mixing device and its construction process.

[0062] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A concrete mixing device, characterized in that, include: The vessel consists of a lower vessel body (1), an upper vessel body (2), and a capacity adjustment component (6). The upper vessel body (2) is installed inside the lower vessel body (1) and a cover (3) is installed on the upper part of the upper vessel body (2). At least two capacity adjustment components (6) are provided, and the upper and lower ends of the capacity adjustment components (6) are respectively installed on the outer walls of the lower vessel body (1) and the upper vessel body (2). The capacity adjustment assembly (6) includes a fixed base (601), an electric telescopic rod (602), and a fixing plate (603). The fixed base (601) is welded to the outer wall of the lower vessel body (1), and the fixing plate (603) is welded to the outer wall of the upper vessel body (2). The electric telescopic rod (602) is vertically fixed between the fixed base (601) and the fixing plate (603) by an installation component. A telescopic rotating assembly (10) is installed between the lower vessel (1) and the upper vessel (2). The upper and lower ends of the telescopic rotating assembly (10) are rotatably connected to the top of the upper vessel (2) and the bottom of the lower vessel (1), respectively. A stirring assembly (11) is installed on the outside of the telescopic rotating assembly (10). The top of the cover (3) is fixed with a servo motor (9), and the upper end of the telescopic rotating component (10) is sealed through the upper vessel body (2) and the cover (3) and is fixedly connected to the output shaft of the servo motor (9). The telescopic rotating assembly (10) includes an outer tube (1001) and a telescopic inner rod (1002). Both the outer tube (1001) and the telescopic inner rod (1002) are provided with several rods. The several outer tubes (1001) and the several telescopic inner rods (1002) are alternately distributed. The telescopic inner rod (1002) is sealed and slidably connected to the adjacent outer tubes (1001). The lowermost outer tube (1001) is rotatably connected to the bottom of the lower vessel (1). The uppermost outer tube (1001) is sealed and penetrates the upper vessel (2) and the cover (3) and is fixedly connected to the output shaft of the servo motor (9). The stirring assembly (11) is fixed on the outer tube (1001).

2. The concrete mixing device according to claim 1, characterized in that, The stirring assembly (11) includes a stirring rod (1101) and an auxiliary rod (1104). Both the stirring rod (1101) and the auxiliary rod (1104) are provided with several rods. Several stirring rods (1101) are horizontally fixed on several outer sleeves (1001). Two sliding grooves (1102) are opened on the outer edges of the upper and lower sides of the stirring rod (1101). Every two auxiliary rods (1104) are rotatably connected by a connecting shaft to form an auxiliary rod with an "X" shaped structure. Several auxiliary rods are distributed alternately with several stirring rods (1101) in an alternating manner. The inner end of the auxiliary rod is hinged to the stirring rod (1101), and the outer end is hinged to a slider (1103). The slider (1103) is slidably connected in the adjacent sliding grooves (1102).

3. A concrete mixing device according to claim 1, characterized in that, The stirring assembly (11) also includes a descaling plate (1105). There are at least two descaling plates (1105) and they are all fixed below the outer wall of the telescopic rotating assembly (10). The bottom of the descaling plates (1105) is tightly attached to the bottom of the lower vessel body (1).

4. A concrete mixing device according to claim 1, characterized in that, A sealing assembly (8) is installed at the lower end of the upper vessel body (2). The sealing assembly (8) includes a sealing ring (801) and a scraper (804). The sealing ring (801) is fixedly connected to the upper vessel body (2), and the scraper (804) is fixed below the sealing ring (801). The side of the scraper (804) is tightly fitted to the inner wall of the lower vessel body (1).

5. A concrete mixing device according to claim 4, characterized in that, The sealing ring (801) has a first sealing layer (802) and a second sealing layer (803) fixed on the side near the inner wall of the lower vessel body (1), and the cross-sections of the first sealing layer (802) and the second sealing layer (803) are both "L" shaped.

6. A concrete mixing device according to claim 1, characterized in that, A connecting rod (12) is fixed on the upper part of the outer wall of the telescopic rotating component (10), and a material removal plate (13) is fixed on the top of the connecting rod (12). The outer side of the material removal plate (13) is closely attached to the inner side of the upper vessel body (2).

7. A concrete mixing device according to claim 1, characterized in that, A support column (7) is fixed below the fixed base (601), and the outer surface of the upper vessel body (2) is provided with scale values.

8. A concrete mixing device according to any one of claims 1-7, characterized in that, The cover (3) has a feed inlet (4) and a sealing cover is provided in the feed inlet (4). A discharge pipe (5) is installed below the lower vessel body (1) and a valve is installed on the discharge pipe (5).

9. A construction process for a concrete mixing device according to claim 8, characterized in that, The specific steps include the following: Step 1: The fixed plate (603) and the upper vessel (2) are raised and lowered together by the lifting of the electric telescopic rod (602), thereby expanding or contracting to adjust the capacity between the upper vessel (2) and the lower vessel (1), which is suitable for concrete mixing of different volumes; Step 2, during capacity adjustment, the outer sleeve (1001) and the telescopic inner rod (1002) are telescopic rod structures that work together with the upper vessel body (2) and the lower vessel body (1) to adjust the capacity, so that the telescopic rotating component (10) extends, and at the same time drives the auxiliary rod in the stirring component (11) to extend. Step 3: The concrete material is fed into the interior of the upper vessel body (2) through the feed port (4). Then, the telescopic rotating component (10) and the stirring rod (1101) are rotated by the servo motor (9). The inner end of the auxiliary rod with an "X" structure is hinged to the stirring rod (1101), and the outer end is slidably connected to the groove (1102) on the stirring rod (1101) through the hinge slider (1103). This allows the auxiliary rod to extend with the extension of the telescopic rotating component (10), so that the telescopic rotating component (10) and the stirring component (11) can still fully and thoroughly mix the concrete inside after the capacity is adjusted. Step 4: Rotate the telescopic rotating component (10) to drive the connecting rod (12) and the material removal plate (13) to rotate, so that the material removal plate (13) scrapes off the concrete adhering to the inner wall of the upper vessel (2) to prevent the inner wall of the upper vessel (2) from sticking. The dual setting of the first sealing layer (802) and the second sealing layer (803) can double seal the connection between the upper vessel (2) and the lower vessel (1) to avoid leakage of concrete materials. Step 5: After the concrete mixing is completed, open the valve at the discharge pipe (5) to discharge the concrete, and use the capacity adjustment component (6) to drive the upper vessel (2) back to the lowest position, and simultaneously drive the scraper (804) to descend to scrape off the concrete adhering to the inner wall of the lower vessel (1).

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