Gravel mixing device for concrete production

Abstract

The utility model relates to the field of concrete production, in particular to a gravel mixing device for concrete production. The gravel mixing device for concrete production solves the technical problems that an existing gravel mixing device for concrete production usually conducts crushing treatment through an independent crushing structure, multiple times of independent crushing according to the matching technology are needed according to different gravel matching requirements, and consequently the crushing effect is limited. Comprising a stirring barrel, a coarse crushing assembly, a medium crushing assembly, a fine crushing assembly, a stirring assembly, a material guiding assembly, a discharging pipe, a supporting column and a supporting base, and the coarse crushing assembly, the medium crushing assembly and the fine crushing assembly which can be mutually communicated for use and can be independently connected with the stirring barrel for use can select corresponding crushing degrees according to actual use requirements of concrete; and the stirring assembly can uniformly stir the concrete gravel crushed by the coarse crushing assembly, the intermediate crushing assembly and the fine crushing assembly, and the material guiding assembly is convenient for guiding out the mixed concrete gravel for use.

Description

Technical Field

[0001] The utility model relates to the field of concrete production, in particular to a sand and gravel mixing device for concrete production. Background Art

[0002] Concrete is a building material mixed with water, cement, aggregate and other additives. It has high compressive strength, good durability and stability, and is widely used in engineering fields such as construction, roads, bridges, etc. The production of concrete is usually carried out in concrete mixing stations. Various raw materials are mixed and stirred by large machinery, and then transported to the construction site for pouring and hardening. The sand and gravel mixing device for concrete production is a device that mixes aggregates such as sand and stone with materials such as cement. It is an important part of the concrete production process. Its function is to mix and stir various raw materials in a certain proportion to prepare concrete that meets the requirements. The existing sand and gravel mixing device for concrete production is usually a separate crushing structure for crushing. According to the different requirements of the sand and gravel ratio, it needs to be crushed separately multiple times according to the proportioning process, resulting in limitations in the crushing effect. Utility Model Content

[0003] In order to overcome the existing sand and gravel mixing devices for concrete production, a separate crushing structure is usually used for crushing. According to different sand and gravel ratio requirements, it is necessary to crush them separately multiple times along with the ratio process, resulting in limited crushing effect.

[0004] The technical scheme of the utility model is: a sand and gravel mixing device for concrete production, comprising a mixing barrel, a coarse crushing component, a medium crushing component and a fine crushing component, a mixing component, a material guiding component, a discharging pipe, a supporting column and a supporting seat, the upper end of the mixing barrel is respectively provided with a coarse crushing component, a medium crushing component and a fine crushing component for coarse crushing, medium crushing and fine crushing of concrete sand and gravel in a stepped manner from bottom to top, a mixing component for mixing concrete sand and gravel is provided in the middle of the upper end of the mixing barrel, a discharging pipe for discharging the mixed concrete sand and gravel is provided in the middle of the lower end of the mixing barrel, a control valve for controlling inlet and outlet is provided on the outer side of the discharging pipe, a material guiding component for transferring and exporting concrete sand and gravel is provided below the discharging pipe, a supporting column for supporting the mixing barrel is provided around the lower side of the mixing barrel, a supporting seat for increasing stability is provided at the lower end of the supporting column, and mounting holes for mounting and fixing the supporting seat are provided around the four corners of the upper end of the supporting seat.

[0005] Preferably, by providing a coarse crushing component, a medium crushing component and a fine crushing component which can be connected to each other or used separately with a mixing barrel, the degree of crushing of concrete sand and gravel can be selected according to the actual use needs of the concrete, which is more convenient and practical; by providing a coarse crushing component, a medium crushing component and a fine crushing component respectively with a first crushing block, a second crushing block and a third crushing block, concrete sand and gravel can be crushed to different degrees; by providing control valves on the outer sides of the first material guide pipe, the second material guide pipe, the third material guide pipe, the fourth material guide pipe and the fifth material guide pipe, different crushing methods can be selected by opening different control valves, and the operation is simple and quick; by providing a stirring component, the concrete sand and gravel crushed by the coarse crushing component, the medium crushing component and the fine crushing component can be stirred evenly; the whole process of crushing, stirring and transmitting are all carried out automatically, and the work efficiency is high.

[0006] Preferably, the coarse crushing component includes a first crushing box, a first material guide pipe, a second material guide pipe, and a first crushing module. The upper part of the first crushing box is provided with a first crushing module for preliminary crushing of concrete sand and gravel, the lower left part of the first crushing box is provided with a first material guide pipe for communicating with a mixing barrel, the lower right part of the first crushing box is provided with a second material guide pipe for communicating with a medium crushing component, and the connection between the first material guide pipe, the second material guide pipe and the first crushing module is provided with a control valve for controlling the inlet and outlet. By arranging control valves at the lower ends of the first material guide pipe and the second material guide pipe, the coarsely crushed concrete sand and gravel can be controlled to enter the mixing barrel or the coarse crushing component.

[0007] Preferably, the first crushing module includes a first driving motor, a driving gear, a driven gear, a pressure roller and a first crushing block. The pressure roller is symmetrically provided with two groups. The same side of the two groups of pressure rollers is respectively provided with a driving gear and a driven gear that are meshed with each other. The end of the driving gear away from the pressure roller is provided with a first driving motor for driving the driving gear to rotate. The first driving motor drives the driven gear to rotate by driving the driving gear. The surface of the pressure roller is linearly distributed and surrounded by multiple groups of first crushing blocks for coarsely crushing concrete sand and gravel. By setting the first driving motor, the driving gear can be driven to rotate, and then the driving gear drives the driven gear to rotate, so that the driving gear and the driven gear can drive the two groups of pressure rollers to rotate relative to each other to squeeze the concrete sand and gravel.

[0008] Preferably, the medium crushing component includes a second crushing box, a third material guide pipe, a fourth material guide pipe and a second crushing module, the second crushing module includes a second crushing block, a third material guide pipe for communicating with a mixing barrel is provided at the left lower end of the second crushing box, a fourth material guide pipe for communicating with a fine crushing component is provided at the right lower end of the second crushing box, a second crushing module for medium crushing of concrete sand and gravel is provided at the upper part of the second crushing box, the third material guide pipe and the fourth material guide pipe are both provided with control valves for controlling inlet and outlet at the connection points with the second crushing box, a plurality of groups of second crushing blocks for medium crushing of concrete sand and gravel are linearly distributed and surrounded on the surface of the second crushing module, and the structure of the second crushing module except the second crushing block is the same as that of the first crushing module, and control valves can be provided on the outer sides of the third material guide pipe and the fourth material guide pipe to control whether the concrete sand and gravel enter directly into the mixing barrel or the fine crushing component.

[0009] Preferably, the fine crushing component includes a third crushing box, a fifth material guide pipe and a third crushing module, the third crushing module includes a third crushing block, the upper part of the third crushing box is provided with a third crushing module for fine crushing of concrete sand and gravel, the lower end of the third crushing box is symmetrically provided with two groups of fifth material guide pipes connected to the mixing barrel, a control valve for controlling the inlet and outlet is provided at the connection between the fifth material guide pipe and the third crushing box, the surface of the third crushing module is linearly distributed and surrounded by multiple groups of third crushing blocks for fine crushing of concrete sand and gravel, the structure of the third crushing module except the third crushing block is the same as that of the first crushing module, and the control valve outside the fifth material guide pipe controls the connection between the third crushing box and the mixing barrel.

[0010] Preferably, the stirring assembly includes a second driving motor, a rotating shaft, a first stirring rod, a second stirring rod and stirring blades. The upper end of the rotating shaft is provided with a second driving motor for driving. The upper surface of the rotating shaft is linearly distributed and surrounded by multiple groups of first stirring rods for stirring. The left and right ends of the first stirring rod are symmetrically provided with two groups of second stirring rods for auxiliary stirring. The lower surface of the rotating shaft is linearly distributed and surrounded by multiple groups of stirring blades for further stirring the concrete sand and gravel. The second driving motor drives the first stirring rod, the second stirring rod and the stirring blades to rotate by driving the rotating shaft. The upper end of the second stirring rod is linearly distributed with multiple groups of guide holes for reducing rotation resistance. By setting the second driving motor, the rotating shaft can be driven to rotate, so that the rotating shaft can drive the first stirring rod, the second stirring rod and the stirring blades to rotate and stir. By setting the guide holes, the rotation resistance of the rotating shaft can be reduced, making the rotation smoother.

[0011] Preferably, the material guide assembly includes a third drive motor, a Jiaolong screw module, a guide box, a guide plate and a foot column. The interior of the guide box is provided with a Jiaolong screw module for conveying the mixed concrete sand and gravel. The third drive motor is provided with an output shaft. The output shaft of the third drive motor passes through the outer side of the guide box and extends to the inner side to drive the Jiaolong screw module to rotate. The end of the guide box away from the third drive motor is provided with a guide plate for facilitating the outflow of concrete sand and gravel. The four corners of the lower end of the guide box are surrounded by foot columns for supporting the guide box. By setting the third drive motor, the Jiaolong screw module can be driven to rotate, so that the Jiaolong screw module can transfer the concrete sand and gravel to the guide plate so that the mixed concrete sand and gravel automatically flow into the corresponding container for transportation and use.

[0012] Beneficial effects of the utility model:

[0013] 1. Compared with the traditional sand and gravel mixing device for concrete production, which is usually crushed by a separate crushing structure, it is necessary to crush it separately with the proportioning process for multiple times according to different sand and gravel ratio requirements, resulting in limited crushing effect. By setting a coarse crushing component, a medium crushing component and a fine crushing component that can be used in communication with each other or connected to a mixing barrel separately, the degree of crushing of concrete sand and gravel can be selected according to the actual use needs of concrete, which is more convenient and practical. By setting a coarse crushing component, a medium crushing component and a fine crushing component respectively with a first crushing block, a second crushing block and a third crushing block, concrete sand and gravel can be crushed to different degrees. By setting a first driving motor, the driving gear can be driven to rotate, and then the driving gear drives the driven gear to rotate, so that the driving gear and the driven gear can drive two sets of pressing rollers to rotate relative to crush the concrete sand and gravel. By setting control valves on the outer sides of the first guide pipe, the second guide pipe, the third guide pipe, the fourth guide pipe and the fifth guide pipe, different crushing methods can be selected by opening different control valves, and the operation is simple and fast.

[0014] 2. By setting a stirring component, the concrete sand and gravel crushed by the coarse crushing component, the medium crushing component and the fine crushing component can be stirred evenly. By setting a second driving motor, the rotating shaft can be driven to rotate, so that the rotating shaft can drive the first stirring rod, the second stirring rod and the stirring blade to rotate and stir. The first stirring rod performs the main stirring, the second stirring rod performs the auxiliary stirring, and the stirring blade performs further stirring. By setting three different stirring structures, the stirring can be more uniform and the stirring effect can be better. By opening a guide hole, the resistance during the rotation of the rotating shaft can be reduced, making the rotation smoother. By setting a discharge pipe, the concrete sand and gravel after stirring can be discharged into the material guide component. By setting a material guide component, the mixed concrete sand and gravel can be easily discharged for use. By setting a third driving motor, the Jiaolong spiral module can be driven to rotate, so that the Jiaolong spiral module can transfer the concrete sand and gravel to the guide plate so that the mixed concrete sand and gravel automatically flows into the corresponding container for transportation and use. The whole process of crushing, stirring and transmission are all automatic, and the work efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 What is shown is the overall schematic diagram of the sand and gravel mixing device for concrete production of the utility model;

[0016] Figure 2 Shown is a schematic diagram of a coarse crushing component in a sand and gravel mixing device for concrete production of the utility model;

[0017] Figure 3 Shown is a schematic diagram of the first crushing module in the sand and gravel mixing device for concrete production of the utility model;

[0018] Figure 4 Shown is a schematic diagram of the second crushing module in the sand and gravel mixing device for concrete production of the utility model;

[0019] Figure 5 Shown is a schematic diagram of the third crushing module in the sand and gravel mixing device for concrete production of the utility model;

[0020] Figure 6 Shown is a schematic diagram of a mixing assembly in a sand and gravel mixing device for concrete production of the utility model;

[0021] Figure 7 The present invention is a schematic diagram of a material guide assembly in a sand and gravel mixing device for concrete production according to the present invention.

[0022] Description of the reference numerals: 1, stirring barrel; 2, coarse crushing assembly; 3, medium crushing assembly; 4, fine crushing assembly; 5, stirring assembly; 6, material guide assembly; 7, discharge pipe; 8, support column; 9, support seat; 10, mounting hole; 201, first crushing box; 202, first material guide pipe; 203, second material guide pipe; 204, first crushing module; 205, first driving motor; 206, driving gear; 207, driven gear; 208, pressure roller; 209, first crushing block; 301, second crushing box; 302, first Three material guide pipes; 303, fourth material guide pipe; 304, second crushing module; 305, second crushing block; 401, third crushing box; 402, fifth material guide pipe; 403, third crushing module; 404, third crushing block; 501, second drive motor; 502, rotating shaft; 503, first stirring rod; 504, second stirring rod; 505, guide hole; 506, stirring blade; 601, third drive motor; 602, Jiaolong spiral module; 603, guide box; 604, guide plate; 605, foot column. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] See also Figure 1 The utility model provides an embodiment: a sand and gravel mixing device for concrete production, comprising a mixing barrel 1, a coarse crushing component 2, a medium crushing component 3, a fine crushing component 4, a stirring component 5, a material guide component 6, a discharge pipe 7, a support column 8 and a support seat 9. The upper end of the mixing barrel 1 is stepped from bottom to top and is respectively provided with a coarse crushing component 2, a medium crushing component 3 and a fine crushing component 4 for coarse crushing, medium crushing and fine crushing of concrete sand and gravel. The middle part of the upper end of the mixing barrel 1 is provided with a stirring component 5 for stirring concrete sand and gravel. The middle part of the lower end of the mixing barrel 1 is provided with a discharge pipe 7 for discharging the mixed concrete sand and gravel. The outer side of the discharge pipe 7 is provided with a control valve for controlling the inlet and outlet. The lower part of the discharge pipe 7 is provided with a material guide component 6 for transferring and exporting concrete sand and gravel. The lower side of the mixing barrel 1 is surrounded by a support column 8 for supporting the mixing barrel 1. The lower end of the support column 8 is provided with a support seat 9 for increasing stability. The upper four corners of the support seat 9 are surrounded by mounting holes 10 for mounting and fixing the support seat 9.

[0025] See also Figure 2In this embodiment, the coarse crushing component 2 includes a first crushing box 201, a first material guide pipe 202, a second material guide pipe 203, and a first crushing module 204. The upper part of the first crushing box 201 is provided with a first crushing module 204 for preliminary crushing of concrete sand and gravel. The lower left part of the first crushing box 201 is provided with a first material guide pipe 202 for communicating with the mixing barrel 1. The lower right part of the first crushing box 201 is provided with a second material guide pipe 203 for communicating with the medium crushing component 3. The connection between the first material guide pipe 202 and the second material guide pipe 203 and the first crushing module 204 is provided with a control valve for controlling inlet and outlet. By arranging control valves at the lower ends of the first material guide pipe 202 and the second material guide pipe 203, the coarsely crushed concrete sand and gravel can be controlled to enter the mixing barrel 1 or the coarse crushing component 2.

[0026] See also Figure 3 In this embodiment, the first crushing module 204 includes a first driving motor 205, a driving gear 206, a driven gear 207, a pressure roller 208 and a first crushing block 209. The pressure roller 208 is symmetrically provided with two groups. The same side of the two groups of pressure rollers 208 is respectively provided with a driving gear 206 and a driven gear 207 that are meshed and connected with each other. The end of the driving gear 206 away from the pressure roller 208 is provided with a first driving motor 205 for driving the driving gear 206 to rotate. The first driving motor 205 drives the driven gear 207 to rotate by driving the driving gear 206 to rotate. The surface of the pressure roller 208 is linearly distributed and surrounded by a plurality of groups of first crushing blocks 209 for coarsely crushing concrete sand and gravel. By setting the first driving motor 205, the driving gear 206 can be driven to rotate, and then the driving gear 206 drives the driven gear 207 to rotate, so that the driving gear 206 and the driven gear 207 can drive the two groups of pressure rollers 208 to rotate relative to crush the concrete sand and gravel.

[0027] See also Figure 4-5In this embodiment, the medium crushing component 3 includes a second crushing box 301, a third material guide pipe 302, a fourth material guide pipe 303 and a second crushing module 304, the second crushing module 304 includes a second crushing block 305, the lower left part of the second crushing box 301 is provided with a third material guide pipe 302 for communicating with the mixing barrel 1, the lower right part of the second crushing box 301 is provided with a fourth material guide pipe 303 for communicating with the fine crushing component 4, the upper part of the second crushing box 301 is provided with a second crushing module 304 for medium crushing of concrete sand and gravel, the connection between the third material guide pipe 302 and the fourth material guide pipe 303 and the second crushing box 301 is provided with a control valve for controlling the inlet and outlet, the surface of the second crushing module 304 is linearly distributed and surrounded by a plurality of groups of second crushing blocks 305 for medium crushing of concrete sand and gravel, and the structure of the second crushing module 304 except the second crushing block 305 is the same as the first crushing module 204, by connecting the third material guide pipe 302 and the fourth material guide pipe 303 to the second crushing box 301 A control valve is arranged on the outside of the fourth material guide pipe 303 to control whether the concrete sand and gravel directly enter the mixing barrel 1 or the fine crushing component 4. The fine crushing component 4 includes a third crushing box 401, a fifth material guide pipe 402 and a third crushing module 403. The third crushing module 403 includes a third crushing block 404. The upper part of the third crushing box 401 is provided with a third crushing module 403 for fine crushing of concrete sand and gravel. The lower end of the third crushing box 401 is symmetrically provided with two groups of fifth material guide pipes 402 connected to the mixing barrel 1. A control valve for controlling entry and exit is arranged at the connection between the fifth material guide pipe 402 and the third crushing box 401. The surface of the third crushing module 403 is linearly distributed and surrounded by multiple groups of third crushing blocks 404 for fine crushing of concrete sand and gravel. The structure of the third crushing module 403 except the third crushing block 404 is the same as that of the first crushing module 204. The control valve on the outside of the fifth material guide pipe 402 controls the connection between the third crushing box 401 and the mixing barrel 1.

[0028] See also Figure 6In this embodiment, the stirring assembly 5 includes a second driving motor 501, a rotating shaft 502, a first stirring rod 503, a second stirring rod 504 and a stirring blade 506. The upper end of the rotating shaft 502 is provided with a second driving motor 501 for driving. The upper surface of the rotating shaft 502 is linearly distributed and surrounded by a plurality of groups of first stirring rods 503 for stirring. The left and right ends of the first stirring rod 503 are symmetrically provided with two groups of second stirring rods 504 for auxiliary stirring. The lower surface of the rotating shaft 502 is linearly distributed and surrounded by a plurality of groups of stirring blades for further stirring the concrete sand and gravel. 506, the second driving motor 501 drives the first stirring rod 503, the second stirring rod 504 and the stirring blade 506 to rotate by driving the rotating shaft 502 to rotate, and the upper end of the second stirring rod 504 is linearly distributed with multiple groups of guide holes 505 for reducing the rotation resistance. By setting the second driving motor 501, the rotating shaft 502 can be driven to rotate, so that the rotating shaft 502 can drive the first stirring rod 503, the second stirring rod 504 and the stirring blade 506 to rotate and stir. By setting the guide holes 505, the rotation resistance of the rotating shaft 502 can be reduced, so that the rotation is smoother.

[0029] See also Figure 7 In this embodiment, the material guide assembly 6 includes a third driving motor 601, a Jiaolong spiral module 602, a guide box 603, a guide plate 604 and a foot column 605. The guide box 603 is provided with a Jiaolong spiral module 602 for conveying the mixed concrete sand and gravel. The third driving motor 601 is provided with an output shaft. The output shaft of the third driving motor 601 passes through the outer side of the guide box 603 and extends to the inner side to drive the Jiaolong spiral module 602 to rotate. The end of the guide box 603 away from the third driving motor 601 is provided with a guide plate 604 for facilitating the outflow of concrete sand and gravel. The lower end of the guide box 603 is surrounded by four corners with foot columns 605 for supporting the guide box 603. By setting the third driving motor 601, the Jiaolong spiral module 602 can be driven to rotate, so that the Jiaolong spiral module 602 can transfer the concrete sand and gravel to the guide plate 604, so that the mixed concrete sand and gravel automatically flow into the corresponding container for transportation and use.

[0030] When working, first place the mixing barrel 1 on a stable ground, then install and fix the support base 9 through the mounting hole 10, and then place the material guide assembly 6 under the mixing barrel 1 to ensure that the discharge pipe 7 can guide the mixed concrete sand and gravel into the guide box 603;

[0031] Then, a crushing method is selected according to the actual use requirements of concrete. When the concrete sand and gravel need to be finely crushed, the control valve that controls the interconnection between the first crushing box 201, the second crushing box 301 and the third crushing box 401 is opened, and the concrete sand and gravel are first put into the first crushing box 201, and the first driving motor 205 drives the driving gear 206 to rotate, so that the driving gear 206 drives the driven gear 207 to rotate, and then the driving gear 206 and the driven gear 207 can drive the two sets of pressing rollers 208 to rotate relative to each other to squeeze the concrete sand and gravel, so as to perform preliminary crushing on the concrete sand and gravel;

[0032] After that, the concrete sand and gravel which have been initially crushed enter the second crushing box 301 along the second material guide pipe 203, and the first driving motor 205 drives the driving gear 206 to rotate, so that the driving gear 206 drives the driven gear 207 to rotate, and then the driving gear 206 and the driven gear 207 can drive the two sets of pressing rollers 208 to rotate relative to each other to squeeze the concrete sand and gravel for medium crushing;

[0033] Then, the concrete sand and gravel after medium crushing enter the third crushing box 401 along the fourth material guide pipe 303, and the first driving motor 205 drives the driving gear 206 to rotate, so that the driving gear 206 drives the driven gear 207 to rotate, and then the driving gear 206 and the driven gear 207 can drive the two sets of pressing rollers 208 to rotate relative to each other to squeeze the concrete sand and gravel for fine crushing;

[0034] Then, the control valve controlling the communication between the third crushing box 401 and the mixing barrel 1 is opened, so that the crushed concrete sand and gravel enter the mixing barrel 1;

[0035] Then, the stirring assembly 5 is used to stir and mix the concrete evenly. The second driving motor 501 drives the rotating shaft 502 to rotate, so that the rotating shaft 502 drives the first stirring rod 503, the second stirring rod 504 and the stirring blade 506 to rotate and stir the concrete sand and gravel evenly.

[0036] Finally, the control valve at the discharge pipe 7 is opened, and the mixed concrete sand and gravel are introduced into the guide box 603 through the discharge pipe 7, and the Jiaolong spiral module 602 is driven to rotate by the third driving motor 601, so that the Jiaolong spiral module 602 transfers the concrete sand and gravel to the guide plate 604, so that the mixed concrete sand and gravel automatically flow into the corresponding container for transportation and use;

[0037] When concrete sand and gravel with other crushing degrees are needed, the crushing method can be selected by simply opening or closing the corresponding control valve.

[0038] Through the above steps, the staff first places the mixing barrel 1 on a stable ground, then installs and fixes the support seat 9 through the installation hole 10, and then places the guide assembly 6 under the mixing barrel 1 to ensure that the discharge pipe 7 can guide the mixed concrete sand and gravel into the guide box 603, and then selects a crushing method according to the actual use requirements of the concrete. When the concrete sand and gravel need to be finely crushed, the control valve that controls the interconnection between the first crushing box 201, the second crushing box 301 and the third crushing box 401 is opened, and the concrete sand and gravel are first put into the first crushing box 201, and the first driving motor 205 drives the driving gear 206 to rotate, so that the driving gear 206 drives the driven gear 207 to rotate, thereby making the driving gear 206 drive the driven gear 207 to rotate, and then the driving gear 206 drives the driven gear 207 to rotate. The gear 206 and the driven gear 207 can drive the two groups of rollers 208 to rotate relative to each other to squeeze the concrete sand and gravel, and perform preliminary crushing on the concrete sand and gravel. Then, the concrete sand and gravel that has been initially crushed enters the second crushing box 301 along the second guide pipe 203, and the first drive motor 205 drives the driving gear 206 to rotate, so that the driving gear 206 drives the driven gear 207 to rotate, and then the driving gear 206 and the driven gear 207 can drive the two groups of rollers 208 to rotate relative to each other to squeeze the concrete sand and gravel, and perform medium crushing. Then, the concrete sand and gravel that has been medium crushed enters the third crushing box 401 along the fourth guide pipe 303, and the driving gear 206 is driven to rotate by the first drive motor 205. , so that the driving gear 206 drives the driven gear 207 to rotate, and then the driving gear 206 and the driven gear 207 can drive the two sets of pressure rollers 208 to rotate relative to each other to squeeze the concrete sand and gravel for fine crushing, and then open the control valve that controls the third crushing box 401 to be connected with the mixing barrel 1, so that the crushed concrete sand and gravel enter the mixing barrel 1, and then use the stirring component 5 to stir and mix evenly, and drive the rotating shaft 502 to rotate by the second driving motor 501, so that the rotating shaft 502 drives the first stirring rod 503, the second stirring rod 504 and the stirring blade 506 to rotate and stir, so that the concrete sand and gravel are evenly mixed. By setting three different stirring structures, the mixing can be more uniform and the stirring effect can be better. Okay, finally open the control valve at the discharge pipe 7, and guide the mixed concrete sand and gravel into the guide box 603 through the discharge pipe 7, and drive the Jiaolong spiral module 602 to rotate through the third drive motor 601, so that the Jiaolong spiral module 602 transfers the concrete sand and gravel to the guide plate 604, so that the mixed concrete sand and gravel automatically flow into the corresponding container for transportation and use. When concrete sand and gravel with other crushing degrees are required, it is only necessary to open or close the corresponding control valve to select the crushing method. By setting the coarse crushing component 2, the medium crushing component 3 and the fine crushing component 4 that can be connected to each other or connected to the mixing barrel 1 separately, the crushing degree of the concrete sand and gravel can be selected according to the actual use needs of the concrete, which is more convenient and practical.By setting control valves on the outside of the first material guide pipe 202, the second material guide pipe 203, the third material guide pipe 302, the fourth material guide pipe 303 and the fifth material guide pipe 402, different crushing methods can be selected by opening different control valves. The operation is simple and fast, and the whole crushing, mixing and transmission are automatically carried out, with high work efficiency.

[0039] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A sand and gravel mixing device for concrete production, comprising a mixing barrel (1); characterized in that: The mixing barrel (1) further comprises a coarse crushing component (2), a medium crushing component (3), a fine crushing component (4), a stirring component (5), a material guide component (6), a material discharge pipe (7), a support column (8) and a support seat (9); the upper end of the mixing barrel (1) is provided with a coarse crushing component (2), a medium crushing component (3) and a fine crushing component (4) for coarse crushing, medium crushing and fine crushing of concrete sand and gravel, respectively, in a stepped manner from bottom to top; the stirring component (5) for stirring concrete sand and gravel is provided in the middle of the upper end of the mixing barrel (1); and the lower end of the mixing barrel (1) is provided with a A discharge pipe (7) is provided for discharging the mixed concrete sand and gravel, a control valve for controlling the inlet and outlet is provided on the outer side of the discharge pipe (7), a material guide assembly (6) for transferring and discharging the concrete sand and gravel is provided below the discharge pipe (7), a support column (8) for supporting the mixing barrel (1) is provided around the lower side of the mixing barrel (1), a support seat (9) for increasing stability is provided at the lower end of the support column (8), and mounting holes (10) for mounting and fixing the support seat (9) are provided around the four corners of the upper end of the support seat (9).

2. A sand and gravel mixing device for concrete production according to claim 1, characterized in that: The coarse crushing component (2) comprises a first crushing box (201), a first material guide pipe (202), a second material guide pipe (203), and a first crushing module (204). The first crushing box (201) is provided with a first crushing module (204) for preliminary crushing of concrete sand and gravel at the upper part, the first crushing box (201) is provided with a first material guide pipe (202) for communicating with a mixing barrel (1) at the lower left part, the first crushing box (201) is provided with a second material guide pipe (203) for communicating with a medium crushing component (3) at the lower right part, and control valves for controlling inlet and outlet are provided at the connection points between the first material guide pipe (202) and the second material guide pipe (203) and the first crushing module (204).

3. The sand and gravel mixing device for concrete production according to claim 1, characterized in that: The first crushing module (204) comprises a first driving motor (205), a driving gear (206), a driven gear (207), a pressure roller (208) and a first crushing block (209). The pressure roller (208) is symmetrically provided with two groups. The same side of the two groups of pressure rollers (208) is respectively provided with a driving gear (206) and a driven gear (207) that are meshed and connected with each other. The first driving motor (205) for driving the driving gear (206) to rotate is provided at one end of the driving gear (206) away from the pressure roller (208). The first driving motor (205) drives the driven gear (207) to rotate by driving the driving gear (206). A plurality of first crushing blocks (209) for coarsely crushing concrete sand and gravel are linearly distributed and arranged around the surface of the pressure roller (208).

4. A sand and gravel mixing device for concrete production according to claim 1, characterized in that: The medium crushing component (3) includes a second crushing box (301), a third material guide pipe (302), a fourth material guide pipe (303) and a second crushing module (304). The second crushing module (304) includes a second crushing block (305). The lower left portion of the second crushing box (301) is provided with a third material guide pipe (302) for communicating with the stirring barrel (1). The lower right portion of the second crushing box (301) is provided with a fourth material guide pipe (303) for communicating with the fine crushing component (4). The upper portion of the second crushing box (301) is provided with a A second crushing module (304) for medium crushing of concrete sand and gravel is provided, and control valves for controlling inlet and outlet are provided at the connection points between the third material guide pipe (302) and the fourth material guide pipe (303) and the second crushing box (301). A plurality of second crushing blocks (305) for medium crushing of concrete sand and gravel are linearly distributed around the surface of the second crushing module (304), and the structure of the second crushing module (304) other than the second crushing blocks (305) is arranged in the same manner as the first crushing module (204).

5. The sand and gravel mixing device for concrete production according to claim 1, characterized in that: The fine crushing component (4) comprises a third crushing box (401), a fifth material guide pipe (402) and a third crushing module (403). The third crushing module (403) comprises a third crushing block (404). The third crushing box (401) is provided with a third crushing module (403) for fine crushing concrete sand and gravel at the upper part. The lower end of the third crushing box (401) is provided with two groups of fifth material guide pipes (402) connected to the mixing barrel (1) in a left-right symmetrical manner. A control valve for controlling the inlet and outlet is provided at the connection between the fifth material guide pipe (402) and the third crushing box (401). The surface of the third crushing module (403) is provided with a plurality of groups of third crushing blocks (404) for fine crushing concrete sand and gravel in a linearly distributed manner. The structure of the third crushing module (403) except the third crushing block (404) is the same as that of the first crushing module (204).

6. The sand and gravel mixing device for concrete production according to claim 1, characterized in that: The stirring assembly (5) comprises a second driving motor (501), a rotating shaft (502), a first stirring rod (503), a second stirring rod (504) and a stirring blade (506); the upper end of the rotating shaft (502) is provided with a second driving motor (501) for driving; the upper surface of the rotating shaft (502) is provided with a plurality of groups of first stirring rods (503) for stirring in a linearly distributed manner; the left and right ends of the first stirring rod (503) are symmetrically provided with two groups of second stirring rods (504) for auxiliary stirring; the lower surface of the rotating shaft (502) is provided with a plurality of groups of stirring blades (506) for further stirring concrete sand and gravel in a linearly distributed manner; the second driving motor (501) drives the rotating shaft (502) to rotate, thereby driving the first stirring rod (503), the second stirring rod (504) and the stirring blade (506) to rotate; the upper end of the second stirring rod (504) is provided with a plurality of groups of guide holes (505) for reducing rotation resistance in a linearly distributed manner.

7. A sand and gravel mixing device for concrete production according to claim 1, characterized in that: The material guide assembly (6) comprises a third driving motor (601), a Jiaolong spiral module (602), a guide box (603), a guide plate (604) and a foot column (605). The guide box (603) is provided with a Jiaolong spiral module (602) for conveying the mixed concrete sand and gravel. The third driving motor (601) is provided with an output shaft. The output shaft of the third driving motor (601) passes through the outer side of the guide box (603) and extends to the inner side to drive the Jiaolong spiral module (602) to rotate. The guide plate (604) is provided at one end of the guide box (603) away from the third driving motor (601) for facilitating the outflow of concrete sand and gravel. The four corners of the lower end of the guide box (603) are surrounded by foot columns (605) for supporting the guide box (603).

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