A building concrete mixing device

Abstract

A construction concrete mixing device includes a casing, an aggregate filtering structure and a stirring structure inside the casing, wherein the area covered by the aggregate filtering structure is a screening area, and the bottom of the casing is a stirring area. The present invention adopts a crank rocker mechanism, and the rotatable characteristic of the crank end is used for the rotation of the stirring paddle; the characteristic that the rocker end can reciprocate at a certain angle is applied to the up and down vibration filtering of aggregates. A crank rocker structure simply and efficiently solves the vibration required for mixing and screening aggregates.

Description

Technical Field

[0001] The invention relates to the technical field of cement processing equipment, in particular to a building concrete mixing device. Background Art

[0002] Cement is a powdery, hydraulic, inorganic cementitious material. It becomes a slurry after adding water and stirring. It can harden in the air or in water, and can firmly bind materials such as sand and stone together. When cement is used in construction projects, it needs to be mixed with sand and gravel aggregates and water to form a concrete mixture. A cement mixer is a machine used to mix cement, sand and gravel aggregates, and water. When mixing aggregates, fine aggregates (less than 5mm in diameter) need to be added first, and after mixing to form mortar, coarse aggregates (greater than 5mm in diameter) are added and finally mixed to form the desired concrete mixture. For example, the announcement number CN115383906A is a cement mixing and stirring equipment for construction, which includes a fixed frame, a water tank, a gravel barrel and a crushing assembly are fixedly installed on the fixed frame, a stirring assembly is fixedly installed in the middle of the fixed frame, and the support frame of the stirring assembly is fixedly connected to the bottom of the top of the fixed frame. The unloading assembly is rotatably installed on the stirring assembly, located above the stirring assembly, and located below the discharge port of the crushing assembly, the water tank, and the gravel barrel, and is used for unloading raw materials. The discharge assembly is located on the lower side of the stirring assembly and is slidably connected above the bottom end of the fixed frame to release the evenly mixed concrete. The receiving assembly is rotatably installed above the bottom end of the fixed frame, and the receiving assembly is located on the lower side of the discharge assembly to receive the evenly mixed concrete; this patent effectively solves the problem of crushing blocky cement. However, the above background technology mentioned that aggregates of different shapes need to be added during the concrete molding process, and this patent fails to solve the problem of aggregate screening. Summary of the invention

[0003] The purpose of the present invention is to solve the problem of adding corresponding fine aggregate or coarse aggregate to concrete at a corresponding time while stirring the concrete raw materials, thereby improving the effect of stirring the concrete.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A construction concrete mixing device, characterized in that it comprises a machine body and a stirring device and a screening device inside the machine body, wherein the screening device is located on the upper part of the stirring device, an aggregate feed port is provided on the machine body, and the aggregate feed port is connected to the screening device; the stirring device is connected to a rotating driving member, which drives the stirring device to stir; the screening device is connected to a vibration driving member, which drives the screening device to vibrate; the vibration driving member is connected to the rotating driving member;

[0006] The rotary drive member includes a driving shaft, a driving gear, a driving helical screw, a driving helical gear, a driving wheel shaft and a corresponding driven structure: a driven shaft and a driven gear, one end of the driving wheel shaft is connected to the output end of the motor, and the other end is coaxially connected to the driving helical gear through the driving wheel shaft; the driving shaft is vertically rotatably connected to the bottom of the screening device, and the driving gear is coaxially arranged; the lower part of the driving shaft is also coaxially arranged with a driving helical screw, and the driving helical screw is meshed with the driving helical gear;

[0007] The vibration driving component includes a crank connecting rod, a middle connecting rod, a rocker, a driven wheel rotating shaft, a driven helical gear and a screw rod. The screw rod is coaxially arranged at the lower part of the driven shaft. A meshing driven helical gear is arranged on one side of the screw rod. The driven helical gear is coaxially connected through one end of the driven wheel rotating shaft. The other end of the driven wheel rotating shaft is rotatably connected to the machine body. One end of the crank connecting rod is connected to one end of the driving wheel rotating shaft, and one end of the rocker is connected to the driven wheel rotating shaft. The middle connecting rod is hinged between the crank connecting rod and the rocker.

[0008] According to a preferred technical solution, a stirring shaft is coaxially provided at the lower end of the driven shaft, and a plurality of stirring paddles are provided on the stirring shaft.

[0009] According to a preferred technical solution, the screening device includes a filter plate, which is a three-layer structure, and is divided into a first filter plate, a second filter plate and a third filter plate from top to bottom. The third filter plate is provided with a plurality of large-aperture through holes, and the first filter plate is provided with large-aperture through holes of equal diameter corresponding to the positions on the third filter plate. The second filter plate located in the middle is a slidable structure, that is, the second filter plate cannot fill the gap between the first filter plate and the third filter plate, and the second filter plate is provided with large-aperture through holes corresponding to the first filter plate and the third filter plate; on the second filter plate, corresponding small-aperture through holes are also provided on one side of all the through holes located on the large-aperture; the aperture of the large-aperture through hole is larger than the aperture of the small-aperture through hole;

[0010] When the second filter plate moves in the horizontal plane under the control of the aperture switching device, when the second filter plate moves to the point where the large-aperture through holes of the second filter plate correspond to the positions of the large-aperture through holes of the first filter plate and the third filter plate, it is in the working state of filtering coarse aggregate; when the second filter plate moves to the point where the small-aperture through holes of the second filter plate correspond to the positions of the large-aperture through holes of the first filter plate and the third filter plate, it is in the working state of filtering fine aggregate.

[0011] According to a preferred technical solution, a slope structure is further provided on the first filter plate, and the slope structure guides the aggregate to the area on the first filter plate where large-diameter through holes are provided.

[0012] According to a preferred technical solution, a switching aperture device is also provided on both sides of the screening device, the switching aperture device includes an ear mother part, a spring, and an ear male part, one side of which is also provided with a driving part including a cam and a camshaft, an ear male part and an ear mother part are respectively provided on both sides of the screening device, and the ear male part and the ear mother part are laterally connected by a spring; the ear male part and the ear mother part are in an L-shaped structure, one end of the ear male part is connected to the inner wall of the machine body, and one end of the ear mother part is connected to the filtering device, the cam is located on one side of one of the ear mother parts, the camshaft is coaxially connected to the working center of the cam, and the other side of the camshaft passes through the inner wall of the machine body.

[0013] According to a preferred technical solution, square through grooves corresponding to the ear mother parts are provided on both sides of the filter device, and the ear mother parts are embedded in the square through grooves. The ear mother parts can contact the filter plate structure in the filter device.

[0014] Compared with the prior art, the invention has the following beneficial effects:

[0015] The present invention adopts a crank rocker mechanism, and uses the rotatable characteristic of the crank end for the rotation of the stirring paddle; the characteristic that the rocker end can reciprocate at a certain angle is applied to the up and down vibration filtering of aggregates. A crank rocker structure is simple and efficient in solving the vibration required for stirring and screening aggregates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the invention (the front plate is not installed in this view);

[0017] Figure 2 A full cutaway view of the invention;

[0018] Figure 3 This is the cross-sectional view at AA;

[0019] Figure 4 It is a local enlarged view of point B;

[0020] Figure 5 It is a filter plate structure;

[0021] Figure 6 It is a stirring structure.

[0022] The accompanying drawings are denoted as follows:

[0023] 1-aggregate inlet, 2-casing, 3-concrete raw material inlet, 4-fixed frame, 5-fixed block, 6-fixed shaft, 7-filter plate, 8-screening frame, 9-switching aperture device, 10-vibration stirring linkage structure, 11-screening area, 12-stirring area, 71-first filter plate, 72-second filter plate, 73-third filter plate, 81-limiting block, 91-ear male part, 92-spring, 93-ear female part, 94-cam , 95-camshaft, 951-protrusion, 101-driving shaft, 102-driving gear, 103-driving helical screw, 104-driving helical gear, 105-driving wheel shaft, 106-crank connecting rod, 107-middle connecting rod, 108-rocker, 109-driven wheel shaft, 110-driven helical gear, 111-screw, 112-driven shaft, 113-driven gear, 114-stirring shaft, 115-stirring paddle. Specific implementation methods

[0024] The purpose of the present invention is to overcome the problems mentioned in the background technology, overcome the shortcomings of the prior art, and provide a building concrete mixing device. The present invention is further described in detail below in conjunction with the embodiments.

[0025] Example 1

[0026] The present invention provides a building concrete mixing device based on Figure 1 to Figure 6 The structure is described in detail below according to the figure.

[0027] A construction concrete mixing device comprises a casing 2 and an aggregate filtering structure and a mixing structure inside the casing 2, wherein the area covered by the aggregate filtering structure is a screening area 11, and the bottom of the casing 2 is a mixing area 12. Specifically, an aggregate inlet 1 is provided at the top of the casing 2, and all the aggregates required for the entire concrete mixing process enter the screening area 11 through the aggregate inlet 1, and a concrete raw material inlet 3 is provided at the side of the casing 2, and raw materials of concrete such as mortar are manually injected into the mixing area 12 in the casing 2 through the above-mentioned concrete raw material inlet 3, and a discharge valve is provided at the bottom of the mixing area 12, i.e., the bottom of the casing 2, and the raw materials after internal mixing are discharged to the outside of the casing through the valve for use.

[0028] Specifically, the screening area 11 is provided with a screening frame 8, a filter plate 7, a fixing frame 4 and a fixing shaft 6 connecting the fixing block 5 and the filter plate 7, wherein two fixing frames 4 are provided and located at the bottom of the sealing plate of the casing 2, and the two fixing frames 4 are provided with a detachable fixing block 5, and one end of the fixing shaft 6 is connected to the filter plate 7, and the other end is connected to the fixing block 5. It is worth mentioning that the screening frame 8 is a cubic cavity structure, and the screening frame 8 has no top and no bottom, and its side wall is provided with a square through slot, through which the filter plate 7 can be placed, and a plurality of limit blocks 81 are provided at the bottom of the screening frame 8, and the limit blocks 81 support the filter plate 7, and limit the filter plate 7 to prevent it from falling, but the filter plate 7 can be moved upward by external force.

[0029] Specifically, the filter plate 7 is a three-layer structure. Figure 5 As shown, from top to bottom, it is divided into a first filter plate 71, a second filter plate 72 and a third filter plate 73. The third filter plate 73 is supported by a limit block 81. The third filter plate 73 is provided with a plurality of through holes with relatively large apertures (through holes larger than 5 mm, i.e., filtering coarse aggregates). The first filter plate 71 is provided with through holes of equal diameter corresponding to the positions on the third filter plate 73. The first filter plate 71 is also provided with an inclined surface structure, which can guide as much aggregate as possible to the part containing the through hole structure, and the second filter plate 72 located in the middle is a slidable structure, wherein the second filter plate 72 is equal in width to the first filter plate 71 and is shorter in length than the first filter plate 71, so that the second filter plate 72 can slide between the first filter plate 71 and the third filter plate 73, i.e., the first filter plate 71 is provided with a plurality of through holes with relatively large apertures (through holes larger than 5 mm, i.e., filtering coarse aggregates). There is always a gap between the filter plate 71 and the third filter plate 73, and the second filter plate 72 cannot be filled. The second filter plate 72 is provided with through holes corresponding to the larger apertures on the first filter plate 71 and the third filter plate 73, and all through holes with larger apertures are also provided with corresponding through holes with smaller apertures (through holes with apertures less than 5 mm, i.e. filtering fine aggregates) on one side. When there is a gap on the left side of the second filter plate 72, the aperture of the second filter plate 72 is a through hole with a larger aperture that matches the position of the through holes of the first filter plate 71 and the third filter plate 73, i.e. filtering coarse aggregates; when there is a gap on the right side of the second filter plate 72, the second filter plate 72 is a through hole with a smaller aperture that matches the position of the through holes of the first filter plate 71 and the third filter plate 73, i.e. filtering fine aggregates.

[0030] Furthermore, aperture switching devices 9 are provided on both sides of the screening frame 8. Specifically, the aperture switching device 9 includes an ear female component 93, a spring 92, and an ear male component 91, wherein an ear male component 91 and an ear female component 93 are provided on both sides of the screening frame 8, and a driving component including a cam 94 and a camshaft 95 is provided on one side. The ear male component 91 and the ear female component 93 are connected by a spring 92. Specifically, the ear male component 91 and the ear female component 93 are in an L-shaped structure, one end of the ear male component 91 is connected to the inner wall of the casing 2, and one end of the ear female component 93 is embedded in the square through groove of the side wall of the screening frame 8. The ear male component 91 and the ear female component 93 are connected by a transversely arranged spring 92. The specific shape is as follows: Figure 4As shown, the cam 94 is located on one side of the ear mother component 93, the camshaft 95 is coaxially connected to the working center of the cam 94, and the other side of the camshaft 95 is connected to the housing 2, passing through the inner wall of the housing 2. A strip-shaped protrusion 951 is provided at the end of the camshaft 95 located outside the housing 2. The protrusion 951 acts as a handle. When the protrusion 951 is in a horizontal position, the corresponding protrusion of the cam 94 faces downward. When the protrusion 951 is in a vertical position, the corresponding protrusion of the cam 94 is in a horizontal state. When the protrusion of the cam 94 is downward, the spring 92 is in a free state. When the camshaft is rotated 90° clockwise, the protrusion of the cam 94 is in a horizontal state and contacts the ear mother component 93, which will drive the other end of the ear mother component 93 to contact the second filter plate. 72, and even push the second filter plate 72 to move toward the other side of the screening frame 8, and then the other end of the second filter plate 72 will contact the ear mother piece 93 on the other side to fill the gap on the left side of the second filter plate 72 and expose the gap on the right side. This state is in the above-mentioned fine aggregate filtering state. It is worth mentioning that in this state, the springs 92 connected to the ear mother pieces 93 on both sides are in an extended state, overcoming the elastic potential energy to maintain a balanced state; when the protrusion 951 on the camshaft 95 is returned, the ear mother piece 93 loses the force of the cam 94 on it, and the spring 92 returns, moving the ear mother pieces 93 on both sides to the right, thereby pushing the second filter plate 72 to the right, filling the gap on the right side again, and being in the coarse aggregate screening state.

[0031] In this embodiment, the stirring area 12 at the bottom of the housing 2 is also provided with a vibration stirring linkage structure 10, such as Figure 6 As shown, it includes a rotary drive member and a vibrating drive member, specifically, the rotary drive member includes a driving shaft 101, a driving gear 102, a driving helical screw 103, a driving helical gear 104, a driving wheel shaft 105 and its corresponding driven structure: a driven shaft 112 and a driven gear 113. One end of the driving wheel shaft 105 is connected to the output end of the motor, and the other end coaxially passes through the driving helical gear 104 and is rigidly connected to it; the driving shaft 101 and the driven shaft 112 are both vertically rotatably connected to the bottom of the third filter plate 73, and the driving shaft 101 and the driven shaft 112 are coaxially provided with a driving gear 102 and a driven gear 113 meshing with the driving gear 102 respectively; the lower part of the driving shaft 101 is also coaxially provided with a driving helical screw 103, and the driving helical screw 103 is meshed with the above-mentioned driving helical gear 104; the lower end of the driven shaft 112 is coaxially provided with a stirring shaft 114, and the stirring shaft 114 is provided with a plurality of stirring paddles 115.

[0032] Its working mode is: when the motor rotates, it drives the driving wheel shaft 105 to rotate, and the driving helical screw 103 meshing with the driving helical gear 104 rotates, so the entire driving shaft 101 rotates, and because the driving gear 102 on the driving shaft 101 is meshed with the driven gear 113, when the driving shaft 101 rotates, it also drives the driven shaft 112 with the driven gear 113 to rotate, and the stirring shaft 114 at the lower end of the driven shaft 112 drives the stirring paddle 115 to rotate to stir the concrete raw materials in the stirring zone 12.

[0033] In this embodiment, the vibration driving member includes a crank connecting rod 106, a middle connecting rod 107, a rocker 108, a driven wheel rotating shaft 109, a driven helical gear 110 and a screw 111. The screw 111 is coaxially arranged at the lower part of the driven shaft 112. A driven helical gear 110 meshing with the screw 111 is provided on one side of the screw 111, and the driven helical gear 110 is rigidly connected through one end of the driven wheel rotating shaft 109, and the other end of the driven wheel rotating shaft 109 is rotatably connected to the housing 2. One end of the crank connecting rod 106 is connected to one end of the driving wheel rotating shaft 105, and one end of the rocker 108 is connected to the driven wheel rotating shaft 109, and the middle connecting rod 107 is hinged between the two to form a complete crank rocker mechanism. The crank connecting rod structure can rotate around the driving wheel rotating shaft 105, and the rocker structure can only swing at a certain angle.

[0034] Its working mode is: the motor drives the active bevel gear 104 to rotate, so that the entire crank rocker 108 mechanism works, the crank end does not hinder the rotation, and at the same time the rocker 108 end forms a regular reciprocating swing, thereby driving the driven bevel gear 110 connected to the driven wheel shaft to rotate, and the driven bevel gear 110 is meshed with the screw 111, forming an effect of converting the rotational motion into a linear motion. Since the rocker 108 can only swing back and forth at a certain angle, the driven wheel shaft will drive the third filter plate 73 connected to the upper end to move up and down continuously, so that the entire filter plate 7 can achieve a vibration effect, and the filter plate 7 at the upper end is vibrated to filter out fine aggregate or coarse aggregate. At the same time, the stirring paddle 115 at the lower end achieves a multi-position stirring effect on the concrete raw materials in the mixing zone 12.

[0035] The working principle of the present invention is as follows: manually rotate the protrusion 951 of the camshaft 95 into a vertical state, i.e., a fine aggregate filtering mode; add the required aggregate to the aggregate inlet 1, turn on the motor connected to the driving wheel shaft 105, and rotate the driving wheel shaft 105 through the above-mentioned working mode to drive the stirring paddle 115 to rotate to stir the concrete raw materials in the stirring zone 12, and at the same time drive the filter plate 7 in the upper screening zone 11 to vibrate up and down, screen the aggregate on the filter plate 7, and inject the fine aggregate into the concrete raw materials first. After the mortar is formed, when coarse aggregate needs to be added, return the protrusion 951 of the camshaft 95, rotate the protrusion 951 to a horizontal state, i.e., a coarse aggregate filtering mode, and add the coarse aggregate to the mortar in the stirring zone 12. Finally, stop the motor, open the discharge valve at the bottom of the device, and take the internal formed concrete.

[0036] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A building concrete mixing device, characterized in that: It includes a machine body and a stirring device and a screening device inside the machine body. The screening device is located on the upper part of the stirring device. The machine body is provided with an aggregate feed port, which is connected to the screening device. The stirring device is connected to a rotating driving member, which drives the stirring device to stir. The screening device is connected to a vibration driving member, which drives the screening device to vibrate. The vibration driving member is connected to the rotating driving member. The rotary drive member comprises a driving shaft (101), a driving gear (102), a driving helical screw (103), a driving helical gear (104), a driving wheel shaft (105) and a corresponding driven structure: a driven shaft (112) and a driven gear (113); one end of the driving wheel shaft (105) is connected to the output end of the motor, and the other end coaxially passes through the driving helical gear (104) and is coaxially connected; the driving shaft (101) is vertically rotatably connected to the bottom of the screening device, and is coaxially provided with the driving gear (102); the lower part of the driving shaft (101) is also coaxially provided with a driving helical screw (103), and the driving helical screw (103) is meshed with the driving helical gear (104); The vibration driving member comprises a crank connecting rod (106), a middle connecting rod (107), a rocking rod (108), a driven wheel rotating shaft (109), a driven helical gear (110) and a screw rod, wherein the screw rod (111) is coaxially arranged at the lower part of the driven shaft (112), a meshing driven helical gear (110) is arranged on one side of the screw rod (111), the driven helical gear is coaxially connected to one end of the driven wheel rotating shaft (109) through one end, the other end of the driven wheel rotating shaft (109) is rotatably connected to the machine body, one end of the crank connecting rod (106) is connected to one end of the driving wheel rotating shaft (105), one end of the rocking rod (108) is connected to the driven wheel rotating shaft (109), and the middle connecting rod (107) is hingedly connected between the crank connecting rod and the rocking rod; A stirring shaft (114) is coaxially disposed at the lower end of the driven shaft (112), and a plurality of stirring paddles (115) are disposed on the stirring shaft (114).

2. A construction concrete mixing device according to claim 1, characterized in that: The screening device comprises a filter plate (7), the filter plate (7) being a three-layer structure, and being divided into a first filter plate (71), a second filter plate (72) and a third filter plate (73) from top to bottom, the third filter plate (73) being provided with a plurality of large-diameter through holes, the first filter plate (71) being provided with large-diameter through holes of equal diameter corresponding to the positions on the third filter plate (73), the second filter plate (72) located in the middle being a slidable structure, that is, the second filter plate (72) cannot fill the gap between the first filter plate (71) and the third filter plate (73), the second filter plate being provided with large-diameter through holes corresponding to the first filter plate (71) and the third filter plate (73); the second filter plate being provided with corresponding small-diameter through holes on one side of all the large-diameter through holes; the diameter of the large-diameter through holes being larger than the diameter of the small-diameter through holes; When the second filter plate (72) moves in a horizontal plane under the control of the aperture switching device, when the second filter plate (72) moves to the point where the large-aperture through hole of the second filter plate (72) corresponds to the position of the large-aperture through hole of the first filter plate (71) and the third filter plate (73), it is in a coarse aggregate filtering working state; when the second filter plate (72) moves to the point where the small-aperture through hole of the second filter plate (72) corresponds to the position of the large-aperture through hole of the first filter plate (71) and the third filter plate (73), it is in a fine aggregate filtering working state.

3. A construction concrete mixing device according to claim 2, characterized in that: The first filter plate (71) is also provided with an inclined surface structure, which guides the aggregate to the area of ​​the first filter plate where large-diameter through holes are provided.

4. A construction concrete mixing device according to claim 1, characterized in that: A switching aperture device (9) is also provided on both sides of the screening device. The switching aperture device comprises an ear female component (93), a spring (92), and an ear male component (91). One side of the switching aperture device is also provided with a driving component comprising a cam (94) and a camshaft (95). An ear male component (91) and an ear female component (93) are respectively provided on both sides of the screening device. The ear male component and the ear female component are laterally connected by a spring (92). The ear male component (91) and the ear female component (93) are in an L-shaped structure. One end of the ear male component is connected to the inner wall of the machine body, and one end of the ear female component (93) is connected to the filtering device. The cam (94) is located on one side of one of the ear female components (93). The camshaft (95) is coaxially connected to the working center of the cam (94), and the other side of the camshaft (95) passes through the inner wall of the machine body.

5. A construction concrete mixing device according to claim 4, characterized in that: Square through grooves corresponding to the ear mother parts (93) are arranged on both sides of the filter device. The ear mother parts (93) are embedded in the square through grooves. The ear mother parts (93) can contact the filter plate structure in the filter device.

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