Gravel stirring device for building construction

Abstract

The utility model discloses a gravel stirring device for building construction, and relates to the technical field of gravel stirring, the gravel stirring device comprises a mixing tank, a mounting rack I, a stabilizing rack and two mounting racks II, the two mounting racks II are respectively positioned at two corresponding ends of the mixing tank and are fixedly connected with the mixing tank, the mounting rack I is positioned at one end of the mixing tank and is fixedly connected with the mixing tank, and the stabilizing rack II is positioned at the other end of the mixing tank. The stirring device has the beneficial effects that one belt pulley II drives the rotating shaft to operate, and the rotating shaft drives the gear III to operate while operating, so that the gear III and the gear IV are meshed to drive the stirring roller II to operate, the rotating directions of the stirring roller II and the rotating shaft are opposite, and when the stirring roller II operates, a stirring plate III on the outer side of the stirring roller II operates along with the rotating shaft; the sand and stones at the bottom end in the mixing tank move upwards, so that the sand and stones in the mixing tank are uniformly mixed, the mixing quality and the mixing effect are improved, and the condition of layering of the sand and stones is avoided.

Description

Technical field:

[0001] The utility model relates to the technical field of sand and gravel mixing, in particular to a sand and gravel mixing device for building construction. Background technology:

[0002] In civil engineering projects, sand and gravel are one of the indispensable raw materials. Sand and gravel concrete is often used, and sand and gravel concrete needs to be mixed before use. Among them, mixing devices are most commonly used on construction sites.

[0003] The Chinese utility model patent with application number 201821551877.X proposes a sand and gravel mixing device for construction, including a base, the top of the base is fixedly connected with a water supply mechanism and a mixing mechanism from left to right in sequence, the mixing mechanism includes a mixing tank fixedly connected to the top of the base, the two sides of the mixing tank are respectively connected with a feed pipe, the interior of the mixing tank is a hollow structure, a partition is provided at the middle position of the interior of the mixing tank, both ends of the partition are fixedly connected to the inner side wall of the mixing tank, the partition divides the interior of the mixing tank into a transmission area and a mixing area, a first horizontal plate is provided in the transmission area, both ends of the first horizontal plate are fixedly connected to the inner side wall of the mixing tank, two vertical rods are fixedly connected at equal intervals between the first horizontal plate and the partition, and a screw rod is rotatably connected to the middle position of the first horizontal plate and the partition, and the screw rod is located in the middle position of the two vertical rods. The utility model can change the method of manually mixing sand and gravel, thereby improving the mixing speed and also improving the mixing quality.

[0004] After being improved, the above device changes the method of manually mixing sand and gravel, thereby increasing the mixing speed and also improving the mixing quality. However, the sand and gravel at the top and bottom of the mixing tank are difficult to mix by only a single mixing device, and sand and gravel stratification is prone to occur, which is not conducive to the normal use of sand and gravel in the later stage. For this reason, we propose a sand and gravel mixing device for construction. Utility model content:

[0005] The utility model aims to provide a sand and gravel mixing device for construction to solve the shortcomings of the prior art.

[0006] The utility model is implemented by the following technical scheme: a sand and gravel mixing device for construction, comprising a mixing tank, a mounting frame 1, a stabilizing frame and two mounting frames 2, the two mounting frames 2 are respectively located at the corresponding two ends of the mixing tank and fixedly connected thereto, the mounting frame 1 is located at one end of the mixing tank and fixedly connected thereto, the stabilizing frame is located at the top of the mixing tank and fixedly connected thereto, a driving device is arranged inside the stabilizing frame, a stirring device 1 is arranged inside the mounting frame 2, a stirring device 2 is arranged inside the mounting frame 1, a material injection pipe is fixedly connected to the top of the mixing tank, and a material discharge pipe is fixedly connected to the bottom of the mixing tank.

[0007] Preferably, the driving device includes a transmission roller, a mounting plate and a motor, the transmission roller passes through a stabilizing frame and is rotatably connected thereto, the mounting plate is located at one side of an inner wall of the stabilizing frame and is fixedly connected thereto, the motor is located at the top of the mounting plate and is fixedly connected thereto, the top of the mixing tank is rotatably connected to a driving gear, the output end of the motor is fixedly connected to one end of the driving gear, the top of the mixing tank is rotatably connected to a transmission gear, the driving gear is meshingly connected to the transmission gear, the top of the transmission gear is fixedly connected to bevel gear 1, the outer side of the transmission roller is fixedly connected to bevel gear 2, the bevel gear 1 is meshingly connected to bevel gear 2, the driving gear is driven to operate by the motor, and the transmission gear is driven to operate by the meshing relationship between the driving gear and the transmission gear, thereby driving the bevel gear 1 to operate through the transmission gear, and driving the bevel gear 2 to operate by the meshing relationship between the bevel gear 1 and the bevel gear 2, thereby driving the transmission roller to operate through the bevel gear 2.

[0008] Preferably, the stirring device comprises two pulleys and a stirring roller, the stirring roller is located at one end of the mounting frame 2 and is rotatably connected thereto, the stirring roller passes through one end of the inner wall of the mixing tank and is rotatably connected thereto, a plurality of stirring plates are fixedly connected to the outer side of the stirring roller, one of the pulleys is located at the outer side of the stirring roller and is fixedly connected thereto, the other pulley is located at the outer side of the transmission roller and is fixedly connected thereto, a transmission belt is rotatably connected to the outer side of one of the pulleys, one of the pulleys is connected to the other pulley through the transmission belt, one of the pulleys is driven to rotate by the transmission roller, and the two pulleys are synchronized by the cooperation of the pulley and the transmission belt, so that the stirring roller is driven to rotate by the other pulley, and the stirring roller drives the plurality of stirring plates to rotate, so that the sand and gravel at the top of the mixing tank moves downward to be evenly mixed.

[0009] Preferably, the stirring device 2 includes two pulleys 2, a rotating shaft, a gear 3, a stirring roller 2 and a gear 4, the rotating shaft is located at one end of the inner wall of the mounting frame 1 and is rotatably connected thereto, the gear 3 is located at the outside of the rotating shaft and is fixedly connected thereto, the stirring roller 2 is located at one end of the inner wall of the mounting frame 1 and is rotatably connected thereto, the gear 4 is located at the outside of the stirring roller 2 and is fixedly connected thereto, the gear 4 is meshed with the gear 3, the stirring roller 2 passes through one end of the inner wall of the mixing tank and is rotatably connected thereto, one of the pulleys 2 is located at the outside of the rotating shaft and is fixedly connected thereto, the other of the pulleys 2 is located at the outside of the stirring roller 1 and is fixedly connected thereto, and the outside of one of the pulleys 2 A transmission belt 2 is rotatably connected to the side, one of the pulleys 2 is connected to another pulley 2 through the transmission belt 2, and a plurality of stirring plates 3 are fixedly connected to the outer side of the stirring roller 2, and one of the pulleys 2 is driven to rotate through the stirring roller 1, so that the two pulleys 2 are synchronized through the cooperation of the pulley 2 and the transmission belt 2, and the rotating shaft is driven to rotate through the other pulley 2, so that when the rotating shaft rotates, the gear 3 on its outer side rotates accordingly, and the stirring roller 2 is driven to rotate through the meshing relationship between the gear 3 and the gear 4, and the stirring roller 2 rotates in opposite directions to the rotating shaft, so that the stirring roller 2 drives the plurality of stirring plates 3 on its outer side to rotate, so that the sand and gravel at the bottom end of the mixing tank move upward to be mixed evenly.

[0010] Preferably, the mixing tank is rotatably connected to a stirring roller three inside, the stirring roller three is fixedly connected to a transmission gear, a plurality of stirring plates two are fixedly connected to the outside of the stirring roller two, a scraper is fixedly connected to the outside of the stirring roller two, and the stirring roller three is driven to operate by the transmission gear, so that the stirring roller three can drive the plurality of stirring plates two to operate to mix the sand and gravel, and the scraper is provided to prevent the sand and gravel from sticking to the inner wall of the mixing tank.

[0011] Preferably, a filter screen is provided inside the injection pipe, and a bolt is threadedly connected to the outer side of the injection pipe, and the bolt is threadedly connected to the filter screen. The sand and gravel can be preliminarily filtered through the filter screen, thereby further improving the mixing effect.

[0012] Preferably, a solenoid valve is provided on the outer side of the discharge pipe, and the solenoid valve allows the user to control the switch of the discharge pipe.

[0013] Advantages of the utility model:

[0014] 1. The utility model: The driving gear is driven by a motor to operate, and the driving gear is meshed with the transmission gear to drive the transmission gear to operate, and the transmission gear drives the bevel gear 1 to operate, and the meshing relationship between the bevel gear 1 and the bevel gear 2 drives the bevel gear 2 to operate, so that the bevel gear 2 drives the transmission roller to operate, and the transmission roller drives the two pulleys 1 on the outside to operate, and the two pulleys 1 are synchronized and reversely rotated through the cooperation of the pulley 1 and the transmission belt 1, and the stirring roller 1 can be driven to operate through the pulley 1, thereby driving the stirring plate 1 on the outside of the stirring roller 1 to operate, so that the sand and gravel on the top of the mixing tank move downward, and The operation of the stirring roller one can drive one of the pulleys two to operate accordingly, and the cooperation between the pulley two and the transmission belt two can make the two pulleys two operate synchronously, so that the rotating shaft can be driven to operate through one of the pulleys two, and the operation of the rotating shaft can drive the gear three to operate, so that the stirring roller two can be driven to operate through the meshing of the gear three and the gear four, and the operation of the stirring roller two and the rotating shaft is opposite. When the stirring roller two is operating, the stirring plate three on its outer side will operate accordingly, so that the sand and gravel at the bottom end of the mixing tank will move upward, so that the sand and gravel inside the mixing tank are evenly mixed, the mixing quality and mixing effect are improved, and the stratification of sand and gravel is avoided.

[0015] 2. The utility model: when the transmission gear is running, it will drive the stirring roller three to run, and then drive the multiple stirring plates two outside the stirring roller three to run accordingly, so as to mix the sand and gravel. Thus, through the cooperation of the stirring plate two, the stirring plate one and the stirring plate three, the sand and gravel are stirred and mixed in different directions, and the mixing quality of the sand and gravel is further improved. Only one driving source is needed, thereby reducing the operating cost. Description of the drawings:

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic structural diagram of a sand and gravel mixing device for construction according to an embodiment of the utility model;

[0018] Figure 2 A side view of a sand and gravel mixing device for construction according to an embodiment of the utility model;

[0019] Figure 3 A sand and gravel mixing device for construction according to an embodiment of the utility model Figure 2 A in the enlarged view;

[0020] Figure 4 A sand and gravel mixing device for construction according to an embodiment of the utility model Figure 2 The enlarged view of point B in the figure;

[0021] Figure 5 A sand and gravel mixing device for construction according to an embodiment of the utility model Figure 2 The enlarged view of point C in the figure;

[0022] Figure 6 A cross-sectional view of a mixing tank of a sand and gravel mixing device for construction according to an embodiment of the utility model;

[0023] Figure 7 This is a cross-sectional view of an injection pipe of a sand and gravel mixing device for construction according to an embodiment of the utility model.

[0024] In the figure: 1. mixing tank; 2. mounting frame 1; 3. injection pipe; 4. stabilizing frame; 5. mounting frame 2; 6. discharge pipe; 7. transmission roller; 8. pulley 1; 9. transmission belt 1; 11. mounting plate; 12. motor; 13. driving gear; 14. transmission gear; 15. bevel gear 1; 16. bevel gear 2; 17. stirring roller 1; 18. pulley 2; 19. transmission belt 2; 20. rotating shaft; 21. gear 3; 22. stirring roller 2; 23. gear 4; 24. stirring plate 1; 26. stirring roller 3; 27. stirring plate 2; 28. scraper; 29. ​​stirring plate 3; 30. bolt; 31. filter screen. Specific implementation method:

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 to 7The utility model provides a technical solution: a sand and gravel mixing device for construction, comprising a mixing tank 1, a mounting frame 2, a stabilizing frame 4 and two mounting frames 2 5, the two mounting frames 2 5 are respectively located at the corresponding two ends of the mixing tank 1 and are fixedly connected thereto, the mounting frame 1 2 is located at one end of the mixing tank 1 and is fixedly connected thereto, the stabilizing frame 4 is located at the top of the mixing tank 1 and is fixedly connected thereto, a driving device is arranged inside the stabilizing frame 4, a stirring device 1 is arranged inside the mounting frame 2 5, a stirring device 2 is arranged inside the mounting frame 1 2, a material injection pipe 3 is fixedly connected to the top of the mixing tank 1, a discharging pipe 6 is fixedly connected to the bottom of the mixing tank 1, the stirring device 1 and the stirring device 2 are driven by the arranged driving device, sand and gravel are injected into the interior of the mixing tank 1 through the arranged material injection pipe 3, and the mixed sand and gravel are discharged through the arranged discharging pipe 6.

[0027] The driving device includes a transmission roller 7, a mounting plate 11 and a motor 12. The transmission roller 7 passes through the stable frame 4 and is rotatably connected thereto. The mounting plate 11 is located on one side of the inner wall of the stable frame 4 and is fixedly connected thereto. The motor 12 is located on the top of the mounting plate 11 and is fixedly connected thereto. The top of the mixing tank 1 is rotatably connected with a driving gear 13. The output end of the motor 12 is fixedly connected to one end of the driving gear 13. The top of the mixing tank 1 is rotatably connected with a transmission gear 14. The driving gear 13 is meshingly connected with the transmission gear 14. The top of the transmission gear 14 is fixedly connected with a bevel gear 15. The outer side of the transmission roller 7 is fixedly connected with a bevel gear 2 16. The bevel gear 15 is meshingly connected with the bevel gear 2 16. The driving gear 13 is driven to operate by the motor 12, and the transmission gear 14 is driven to operate by the meshing relationship between the driving gear 13 and the transmission gear 14, thereby driving the bevel gear 15 to operate through the transmission gear 14, and driving the bevel gear 2 16 to operate by the meshing relationship between the bevel gear 15 and the bevel gear 2 16, thereby driving the transmission roller 7 to operate through the bevel gear 2 16.

[0028] The stirring device 1 includes two pulleys 8 and a stirring roller 17. The stirring roller 17 is located at one end of the mounting frame 25 and is rotatably connected thereto. The stirring roller 17 passes through one end of the inner wall of the mixing tank 1 and is rotatably connected thereto. A plurality of stirring plates 24 are fixedly connected to the outer side of the stirring roller 17. One of the pulleys 8 is located at the outer side of the stirring roller 17 and is fixedly connected thereto. Another pulley 8 is located at the outer side of the transmission roller 7 and is fixedly connected thereto. A transmission belt 9 is rotatably connected to the outer side of one of the pulleys 8. One of the pulleys 8 is connected to another pulley 8 through the transmission belt 9. The transmission roller 7 drives one of the pulleys 8 to rotate. Through the cooperation of the pulley 8 and the transmission belt 9, the two pulleys 8 rotate synchronously, thereby driving the stirring roller 17 to rotate through the other pulley 8. The stirring roller 17 drives the plurality of stirring plates 24 to rotate, so that the sand and gravel at the top of the mixing tank 1 moves downward to be evenly mixed.

[0029] The stirring device 2 includes two pulleys 2 18, a rotating shaft 20, a gear 3 21, a stirring roller 22 and a gear 4 23. The rotating shaft 20 is located at one end of the inner wall of the mounting frame 1 2 and is rotatably connected thereto. The gear 3 21 is located on the outside of the rotating shaft 20 and is fixedly connected thereto. The stirring roller 22 is located at one end of the inner wall of the mounting frame 1 2 and is rotatably connected thereto. The gear 4 23 is located on the outside of the stirring roller 22 and is fixedly connected thereto. The gear 4 23 is meshedly connected with the gear 3 21. The stirring roller 22 passes through one end of the inner wall of the mixing tank 1 and is rotatably connected thereto. One of the pulleys 2 18 is located on the outside of the rotating shaft 20 and is fixedly connected thereto. The other pulley 2 18 is located on the outside of the stirring roller 1 17 and is fixedly connected thereto. The outer side of one of the pulleys 2 18 is rotatably connected with a transmission belt 2 19 , one of the pulleys 2 18 is connected to the other pulley 2 18 through the transmission belt 2 19, and a plurality of stirring plates 3 29 are fixedly connected to the outer side of the stirring roller 22. One of the pulleys 2 18 is driven to operate by the stirring roller 17, so that the two pulleys 2 18 are synchronized through the cooperation of the pulley 2 18 and the transmission belt 2 19, and the rotating shaft 20 is driven to operate by the other pulley 2 18. When the rotating shaft 20 operates, the gear 3 21 on its outer side operates accordingly, and the stirring roller 22 is driven to operate through the meshing relationship between the gear 3 21 and the gear 4 23, and the stirring roller 22 and the rotating shaft 20 operate in opposite directions, so that the stirring roller 22 drives the plurality of stirring plates 3 29 on its outer side to operate, so that the sand and gravel at the bottom end of the mixing tank 1 move upward to be evenly mixed.

[0030] The interior of the mixing tank 1 is rotatably connected to a stirring roller three 26, which is fixedly connected to a transmission gear 14. A plurality of stirring plates two 27 are fixedly connected to the outer side of the stirring roller two 22, and a scraper 28 is fixedly connected to the outer side of the stirring roller two 22. The stirring roller three 26 is driven to rotate by the transmission gear 14, so that the stirring roller three 26 can drive the plurality of stirring plates two 27 to rotate to mix the sand and gravel, and the scraper 28 is provided to prevent the sand and gravel from adhering to the inner wall of the mixing tank 1.

[0031] A filter screen 31 is arranged inside the injection pipe 3, and a bolt 30 is threadedly connected to the outer side of the injection pipe 3. The bolt 30 is threadedly connected to the filter screen 31. The filter screen 31 can be used to perform preliminary filtering on the sand and gravel, thereby further improving the mixing effect. A solenoid valve is arranged on the outer side of the discharge pipe 6. The solenoid valve can be used to facilitate the user to control the switch of the discharge pipe 6.

[0032] In summary, when the sand and gravel mixing device for construction is used, the filter screen 31 is disassembled and installed by bolts 30, and then the sand and gravel and other materials to be mixed are poured into the mixing tank 1 from the injection pipe 3, and the unqualified sand and gravel are filtered through the filter screen 31, thereby improving the mixing quality and efficiency, and then the motor 12 is started, and the driving gear 13 is driven to operate by the motor 12, and the driving gear 14 is driven to operate by the meshing relationship between the driving gear 13 and the transmission gear 14, and the transmission gear 14 will synchronously drive the bevel gear 14 to operate when it is running. The bevel gear 15 rotates, and the meshing relationship between the bevel gear 15 and the bevel gear 2 16 drives the bevel gear 2 16 to rotate. The bevel gear 2 16 drives the transmission roller 7 to rotate when it rotates. The transmission roller 7 drives the two pulleys 18 on the outside thereof to rotate, and the two pulleys 18 are synchronized by the cooperation between the pulley 18 and the transmission belt 19, and the stirring roller 17 is driven to rotate by one of the pulleys 18. The stirring roller 17 drives the pulley 2 18 and the stirring plate 24 to rotate when it rotates. The operation of the stirring plate 24 will move the sand and gravel at the top of the mixing tank 1. When the materials move downward, they can be mixed more evenly. When the pulley 2 18 is running, it will drive the transmission belt 2 19 to run, thereby driving another pulley 2 18 to run. The other pulley 2 18 will drive the rotating shaft 20 to run. When the rotating shaft 20 is running, it will drive the gear 3 21 to run, and drive the gear 4 23 to run through the meshing relationship between the gear 3 21 and the gear 4 23. When the gear 4 23 is running, it will drive the stirring roller 22 to run, and drive multiple stirring plates 3 29 to run through the stirring roller 22, and the stirring roller 22 and the rotating shaft 20 are running in opposite directions. On the contrary, the material at the bottom of the mixing tank 1 can be moved upward through the operation of the stirring plate three 29, thereby further improving the mixing quality, and while the transmission gear 14 is operating, it will synchronously drive the stirring roller three 26 to operate, and then the stirring roller three 26 will drive the multiple stirring plates two 27 on its outside to operate accordingly, so as to mix the sand and gravel, so that through the cooperation of the stirring plate two 27, the stirring plate one 24 and the stirring plate three 29, the sand and gravel can be stirred and mixed in different directions, further improving the mixing quality of the sand and gravel, and only one driving source is required, thereby reducing the operating cost.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sand and gravel mixing device for construction, comprising a mixing tank (1), a first mounting frame (2), a stabilizing frame (4) and two second mounting frames (5), characterized in that: The two mounting frames (5) are respectively located at the corresponding two ends of the mixing tank (1) and are fixedly connected thereto, the mounting frame (2) is located at one end of the mixing tank (1) and is fixedly connected thereto, the stabilizing frame (4) is located at the top of the mixing tank (1) and is fixedly connected thereto, a driving device is arranged inside the stabilizing frame (4), a stirring device (1) is arranged inside the mounting frame (5), a stirring device (2) is arranged inside the mounting frame (2), a material injection pipe (3) is fixedly connected to the top of the mixing tank (1), and a material discharge pipe (6) is fixedly connected to the bottom of the mixing tank (1).

2. A sand and gravel mixing device for construction according to claim 1, characterized in that: The driving device comprises a transmission roller (7), a mounting plate (11) and a motor (12); the transmission roller (7) penetrates the stabilizing frame (4) and is rotatably connected thereto; the mounting plate (11) is located on one side of the inner wall of the stabilizing frame (4) and is fixedly connected thereto; the motor (12) is located on the top of the mounting plate (11) and is fixedly connected thereto; the top of the mixing tank (1) is rotatably connected to a driving gear (13); the output end of the motor (12) is fixedly connected to one end of the driving gear (13); the top of the mixing tank (1) is rotatably connected to a transmission gear (14); the driving gear (13) is meshingly connected to the transmission gear (14); the top of the transmission gear (14) is fixedly connected to a bevel gear 1 (15); the outer side of the transmission roller (7) is fixedly connected to a bevel gear 2 (16); the bevel gear 1 (15) is meshingly connected to the bevel gear 2 (16).

3. A sand and gravel mixing device for construction according to claim 1, characterized in that: The stirring device comprises two pulleys (8) and a stirring roller (17), wherein the stirring roller (17) is located at one end of the mounting frame (5) and is rotatably connected thereto, the stirring roller (17) penetrates one end of the inner wall of the mixing tank (1) and is rotatably connected thereto, a plurality of stirring plates (24) are fixedly connected to the outer side of the stirring roller (17), one of the pulleys (8) is located at the outer side of the stirring roller (17) and is fixedly connected thereto, the other pulley (8) is located at the outer side of the transmission roller (7) and is fixedly connected thereto, the outer side of one of the pulleys (8) is rotatably connected to a transmission belt (9), and one of the pulleys (8) is connected to the other pulley (8) through the transmission belt (9).

4. A sand and gravel mixing device for construction according to claim 3, characterized in that: The stirring device 2 comprises two pulleys 2 (18), a rotating shaft (20), a gear 3 (21), a stirring roller 2 (22) and a gear 4 (23), wherein the rotating shaft (20) is located at one end of the inner wall of the mounting frame 1 (2) and is rotatably connected thereto, the gear 3 (21) is located at the outer side of the rotating shaft (20) and is fixedly connected thereto, the stirring roller 2 (22) is located at one end of the inner wall of the mounting frame 1 (2) and is rotatably connected thereto, the gear 4 (23) is located at the outer side of the stirring roller 2 (22) and is fixedly connected thereto, the gear 4 (23) is meshedly connected with the gear 3 (21), and the stirring roller 2 (22) is meshedly connected with the gear 3 (21). The stirring roller 2 (22) penetrates one end of the inner wall of the mixing tank (1) and is rotatably connected thereto, one of the pulleys 2 (18) is located on the outside of the rotating shaft (20) and is fixedly connected thereto, the other pulley 2 (18) is located on the outside of the stirring roller 1 (17) and is fixedly connected thereto, the outer side of one of the pulleys 2 (18) is rotatably connected to a transmission belt 2 (19), one of the pulleys 2 (18) is connected to the other pulley 2 (18) through the transmission belt 2 (19), and the outer side of the stirring roller 2 (22) is fixedly connected to a plurality of stirring plates 3 (29).

5. A sand and gravel mixing device for construction according to claim 4, characterized in that: The interior of the mixing tank (1) is rotatably connected to a stirring roller three (26), and the stirring roller three (26) is fixedly connected to a transmission gear (14). The outer side of the stirring roller two (22) is fixedly connected to a plurality of stirring plates two (27), and the outer side of the stirring roller two (22) is fixedly connected to a scraper (28).

6. A sand and gravel mixing device for construction according to claim 1, characterized in that: A filter screen (31) is arranged inside the injection pipe (3), and a bolt (30) is threadedly connected to the outer side of the injection pipe (3), and the bolt (30) is threadedly connected to the filter screen (31).

7. A sand and gravel mixing device for construction according to claim 1, characterized in that: A solenoid valve is arranged on the outer side of the discharge pipe (6).

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