Concrete mixer

Abstract

The utility model provides a concrete mixer, which comprises a mounting seat, a mixing drum and a mixing shaft, the mixing drum is fixedly arranged on the mounting seat, an inlet and an outlet are respectively arranged at the upper end and the lower end of the mixing drum, the mixing shaft is rotatably arranged in the mixing drum, and the concrete mixer also comprises a feeding mechanism arranged at the inlet at the upper end of the mixing drum and a discharging mechanism arranged at the lower end of the mixing drum. Comprising two crushing rollers arranged side by side, and the crushing rollers are in transmission connection through a connecting piece; the cleaning mechanism is arranged in the stirring barrel and comprises an annular plate attached to the inner wall of the stirring barrel and a first power source used for driving the annular plate to move; the scraping block is arranged at the bottom end of the interior of the stirring barrel, and the scraping block is in sliding connection with the side wall, close to the stirring shaft, of the annular plate. According to the utility model, the raw materials can be crushed before being mixed and stirred, and the interior of the stirrer can be automatically cleaned after the stirring operation is completed, so that the trouble of manual cleaning is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete mixing, in particular to a concrete mixer. Background Art

[0002] Concrete is made by mixing sand, cement and water in proportion. It is the most used building material in the world. Concrete is widely used and used in large quantities, which means that the requirements for concrete quality and production efficiency are improved. A mixer is needed in the mixing process of concrete. The mixer can use mechanical kinetic energy to evenly mix water, sand, and cement to make concrete.

[0003] However, the concrete mixers commonly used in the industry currently have many technical deficiencies. For example, when the raw materials are directly poured into the mixer for mixing, some of the raw materials cannot be fully crushed, which will affect the final mixing effect; the concrete raw materials will come into contact with the inner wall of the machine during the mixing and stirring process, and are prone to adhesion and residue, resulting in errors in the raw material ratio of subsequent concrete mixing. Manual cleaning is time-consuming and labor-intensive, reducing work efficiency.

[0004] To this end, the utility model provides a concrete mixer. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a concrete mixer, which can perform crushing processing before mixing and stirring various raw materials, and can automatically clean the inside of the mixer after the mixing operation is completed, avoiding the trouble of manual cleaning.

[0006] According to an embodiment of the utility model, a concrete mixer comprises a mounting seat, a mixing drum and a mixing shaft, wherein the mixing drum is fixedly arranged on the mounting seat, and the upper and lower ends of the mixing drum are respectively provided with an inlet and an outlet, and the mixing shaft is rotatably arranged in the mixing drum, and further comprises: a feeding mechanism, arranged at the upper end inlet of the mixing drum, comprising two crushing rollers arranged side by side, and the crushing rollers are transmission-connected by a connecting piece; a cleaning mechanism, arranged inside the mixing drum, comprising an annular plate arranged in contact with the inner wall of the mixing drum, and a first power source for driving the annular plate to move; a scraper block, arranged at the inner bottom end of the mixing drum, and the scraper block is slidably connected to the side wall of the annular plate close to the mixing shaft.

[0007] Preferably, an annular through hole is provided at the bottom of the mixing drum, and an annular plate is slidably connected to the annular through hole in a vertical direction; the first power source includes a first motor fixedly mounted on a mounting seat, a threaded rod driven to rotate by the first motor, and a slider slidably connected to the threaded rod, and a limiting groove is provided on one side wall of the mixing drum in a vertical direction, and one end of the slider passes through the limiting groove and is fixedly connected to the annular plate.

[0008] Preferably, the scraper block is an annular structure and is installed in the mixing drum at a position close to the annular through hole.

[0009] Preferably, the feeding mechanism further comprises a hopper fixedly arranged at the inlet of the upper end of the mixing drum, and the two crushing rollers are rotatably arranged at the outlet end of the hopper.

[0010] Preferably, a mounting frame is fixedly connected to the mounting seat, an opening for fixing the hopper is provided on the top of the mounting frame, the mixing drum is fixedly connected to the mounting frame, and a material guide cylinder is fixedly arranged inside the mounting frame, the upper end of the material guide cylinder is connected to the outlet end of the hopper, and the lower end of the material guide cylinder is connected to the inlet end of the mixing drum.

[0011] Preferably, the connecting member is a gear, and one end of the two crushing rollers are both coaxially fixedly connected with the gear after passing through the hopper, and the two gears are meshed with each other.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. By setting a mounting seat, a mixing drum, a mixing shaft, a feeding mechanism and a cleaning mechanism, the raw materials entering the mixing drum can be crushed under the action of a crushing roller, so as to facilitate subsequent uniform mixing and improve the mixing effect between the raw materials; while the mixing shaft rotates for mixing, because the annular plate is arranged to fit the inner wall of the mixing drum, the material will not directly contact the side wall of the mixing drum. After the mixing is completed, the first power source is used to drive the annular plate to move up and down. When the annular plate moves, it contacts the scraper block to scrape off the raw materials adhered thereto, thereby playing a cleaning role and avoiding the time-consuming and labor-intensive manual cleaning, which can help improve work efficiency and the accuracy of concrete mix proportioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 It is a side structural schematic diagram of the hopper in the utility model.

[0017] In the above drawings: 1. mounting base; 2. mixing drum; 3. mixing shaft; 4. feeding mechanism; 401. crushing roller; 402. hopper; 5. cleaning mechanism; 501. annular plate; 502. first motor; 503. threaded rod; 504. slider; 6. scraper block; 7. mounting frame; 8. guide drum; 9. gear. DETAILED DESCRIPTION

[0018] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1 , Figure 2 As shown, the embodiment of the utility model proposes a concrete mixer, including a mounting base 1, a mixing drum 2 and a mixing shaft 3, the mixing drum 2 is fixedly arranged on the mounting base 1, and the upper and lower ends of the mixing drum 2 are respectively provided with an inlet and an outlet, the mixing shaft 3 is rotatably arranged in the mixing drum 2, and also includes: a feeding mechanism 4, which is arranged at the upper end inlet of the mixing drum 2, including two crushing rollers 401 arranged side by side, and the crushing rollers 401 are connected to each other by a connecting piece; a cleaning mechanism 5, which is arranged inside the mixing drum 2, including an annular plate 501 arranged in contact with the inner wall of the mixing drum 2, and a first power source for driving the annular plate 501 to move; a scraper block 6, which is arranged at the inner bottom end of the mixing drum 2, and the scraper block 6 is slidably connected with the side wall of the annular plate 501 close to the mixing shaft 3.

[0020] Furthermore, an annular through hole is provided at the bottom of the mixing drum 2, and the annular plate 501 is slidably connected to the annular through hole in the vertical direction; the first power source includes a first motor 502 fixedly mounted on the mounting base 1, a threaded rod 503 driven to rotate by the first motor 502, and a slider 504 slidably connected to the threaded rod 503, and a limiting groove is provided on one side wall of the mixing drum 2 in the vertical direction, and one end of the slider 504 passes through the limiting groove and is fixedly connected to the annular plate 501.

[0021] Furthermore, the scraper block 6 is an annular structure and is installed in the mixing drum 2 at a position close to the annular through hole.

[0022] The detailed working process of this embodiment is as follows: the raw materials for mixing concrete fall into the mixing drum 2 through the feeding mechanism 4. Prior to this, the raw materials are first crushed by two rotating crushing rollers 401, and then mixed and stirred by the rotating mixing shaft 3. After the mixing is completed, the staff starts the cleaning mechanism 5 and uses the first motor 502 to drive the threaded rod 503 to rotate. The threaded rod 503 drives the slider 504 threadedly connected thereto to move up and down. The movement of the slider 504 is limited by the limit groove and can only be carried out in the vertical direction. At the same time, it drives the annular plate 501 to move up and down, and slides out or penetrates in the annular through hole. When the annular plate 501 moves downward, its side wall close to the mixing shaft 3 slides and connects with the scraper block 6, which can scrape off the adhered raw materials to avoid residual affecting the subsequent mixing ratio.

[0023] It is known that the two crushing rollers 401 in this embodiment are connected by a connecting piece, and the power source that actually drives the crushing rollers 401 to rotate is set to be selected from the existing technology, such as a motor, etc., which can drive one of the crushing rollers 401 to rotate, and then under the action of the connecting piece, the two crushing rollers 401 are driven to rotate towards each other; and the stirring shaft 3 is also provided with a power source to drive it to rotate, and the power source also adopts the existing technology.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, according to another embodiment of the present utility model, a concrete mixer, wherein the feeding mechanism 4 further comprises a hopper 402 fixedly arranged at the inlet of the upper end of the mixing drum 2 , and two crushing rollers 401 are both rotatably arranged at the outlet end of the hopper 402 .

[0025] Furthermore, a mounting frame 7 is fixedly connected to the mounting seat 1, and an opening for fixing the hopper 402 is opened at the top of the mounting frame 7. The mixing drum 2 is fixedly connected to the mounting frame 7, and a material guide barrel 8 is fixedly arranged inside the mounting frame 7. The upper end of the material guide barrel 8 is connected to the outlet end of the hopper 402, and the lower end of the material guide barrel 8 is connected to the inlet of the mixing drum 2.

[0026] The detailed working process of this embodiment is as follows: the raw materials for mixing concrete are first introduced into the hopper 402. The hopper 402 of this embodiment adopts an irregular structure (see attached Figure 3 ), one side of the inner wall of which is inclined. When the raw materials roll down to the outlet end of the hopper 402, they will spread on the inclined inner wall of the hopper 402, which can disperse the raw materials and make the raw materials fully contact with the crushing roller 401, thereby enhancing the crushing effect. Then the raw materials are transferred to the inside of the mixing drum 2 through the material guide barrel 8, and the mixing operation is carried out by the mixing shaft 3.

[0027] In this embodiment, in order to cooperate with the movement trajectory of the annular plate 501, a through hole is provided at the bottom of the mounting outer frame 7 for the annular plate 501 to move up and down. When the first motor 502 is started, the annular plate 501 is driven to move vertically downward, and it will successively pass through the annular through hole at the bottom of the mixing drum 2 and the through hole at the bottom of the mounting outer frame 7, so as to make a large-scale contact with the scraper block 6, thereby improving the cleaning effect and effectively preventing raw material residue.

[0028] like Figure 1 , Figure 2 , Figure 3 As shown, according to another embodiment of the utility model, a concrete mixer, wherein the connecting member is a gear 9, one end of the two crushing rollers 401 are both fixedly connected with the gear 9 coaxially after passing through the hopper 402, and the two gears 9 are in driving meshing.

[0029] The detailed working process of this embodiment is: use an external power source to first drive one of the crushing rollers 401 to rotate, which can synchronously drive one of the gears 9 to rotate, and the two gears 9 are engaged in transmission, which can then drive the other crushing roller 401 to rotate in the opposite direction, and the raw materials falling between the two crushing rollers 401 are crushed.

[0030] The implementation principle of the embodiment of this application is:

[0031] When in use, the various concrete raw materials are introduced into the mixing drum 2 through the hopper 402. When the raw materials fall from the hopper 402, they are crushed by the two rotating crushing rollers 401, and then transferred to the inside of the mixing drum 2 under the action of the guide barrel 8. The stirring shaft 3 is driven to rotate, and the raw materials can be fully mixed and stirred. After the mixing is completed, the raw materials are discharged from the outlet of the mixing drum 2;

[0032] After the mixing operation is completed, the staff starts the first motor 502, and the first motor 502 drives the threaded rod 503 to rotate, and the threaded rod 503 then drives the slider 504 threadedly connected to it to move up and down. While the slider 504 moves, it is slidably connected to the limit groove provided on the mixing drum 2, and can then drive the annular plate 501 to move vertically up and down, and the raw materials adhered to the side wall are scraped off by the scraper block 6, and the scraped raw materials flow to the opening along the inclined bottom plate of the mixing drum 2, and then are discharged.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A concrete mixer, comprising a mounting base (1), a mixing drum (2) and a mixing shaft (3), wherein the mixing drum (2) is fixedly mounted on the mounting base (1), and an inlet and an outlet are respectively arranged at the upper and lower ends of the mixing drum (2), and the mixing shaft (3) is rotatably mounted in the mixing drum (2), characterized in that: Also includes: The feeding mechanism (4) is arranged at the upper inlet of the mixing drum (2), and comprises two crushing rollers (401) arranged side by side, wherein the crushing rollers (401) are connected to each other by a connecting member; A cleaning mechanism (5) is arranged inside the mixing drum (2), comprising an annular plate (501) arranged in contact with the inner wall of the mixing drum (2), and a first power source for driving the annular plate (501) to move; The scraper block (6) is arranged at the inner bottom end of the mixing drum (2), and the scraper block (6) is slidably connected to the side wall of the annular plate (501) close to the mixing shaft (3).

2. A concrete mixer according to claim 1, characterized in that: The bottom of the mixing drum (2) is provided with an annular through hole, and the annular plate (501) is slidably connected to the annular through hole in the vertical direction; the first power source comprises a first motor (502) fixedly mounted on the mounting seat (1), a threaded rod (503) driven to rotate by the first motor (502), and a slider (504) slidably connected to the threaded rod (503); a limiting groove is provided on one side wall of the mixing drum (2) in the vertical direction, and one end of the slider (504) passes through the limiting groove and is fixedly connected to the annular plate (501).

3. A concrete mixer according to claim 1, characterized in that: The scraper block (6) is an annular structure and is mounted in a position close to the annular through hole in the mixing drum (2).

4. A concrete mixer according to claim 1, characterized in that: The feeding mechanism (4) further comprises a hopper (402) fixedly arranged at the inlet of the upper end of the mixing drum (2), and the two crushing rollers (401) are both rotatably arranged at the outlet end of the hopper (402).

5. A concrete mixer according to claim 4, characterized in that: The mounting seat (1) is fixedly connected to a mounting outer frame (7), the top of the mounting outer frame (7) is provided with an opening for fixing a hopper (402), the mixing drum (2) is fixedly connected to the mounting outer frame (7), and a material guide cylinder (8) is fixedly arranged inside the mounting outer frame (7), the upper end of the material guide cylinder (8) is connected to the outlet end of the hopper (402), and the lower end of the material guide cylinder (8) is connected to the inlet end of the mixing drum (2).

6. A concrete mixer according to claim 4, characterized in that: The connecting member is a gear (9), and one end of the two crushing rollers (401) is fixedly connected to the gear (9) coaxially after passing through the hopper (402), and the two gears (9) are in transmission meshing engagement.

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