Concrete mixing device

Abstract

The utility model relates to the technical field of building equipment, in particular to a concrete mixing device which comprises a support, a mixing barrel used for mixing concrete is arranged on the support, an inner barrel is located in the mixing barrel and can rotate in the mixing barrel, and a plurality of mixing blades used for mixing concrete are arranged on the outer wall of the inner barrel in a surrounding mode. A spiral blade opposite to the inner barrel in rotating direction is arranged in the inner barrel; the cleaning assembly is arranged outside the inner barrel and comprises scraping plates which are symmetrically arranged and can rotationally scrape the inner wall of the mixing barrel, the spiral blades are arranged in the inner barrel, concrete in the inner barrel is stirred and then pushed out of the inner barrel, the rotating direction of the inner barrel is opposite to that of the spiral blades, the stirring blades on the outer wall of the inner barrel further stir the concrete, and the concrete is uniformly stirred. And meanwhile, the inner wall of the mixing barrel is scraped by the scraping plates along with rotation of the spiral blades, the inner wall of the mixing barrel is continuously cleaned in the concrete mixing process, and waste of concrete raw materials is reduced.

Description

Technical Field

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

[0002] Concrete refers to the general term for engineering composite materials in which aggregate is cemented into a whole by a cementitious material. Usually, the term concrete refers to cement concrete, which uses cement as the cementitious material, sand and stone as aggregate; it is mixed with water (which may contain additives and admixtures) in a certain proportion and obtained by stirring. It is also called ordinary concrete, and it is widely used in civil engineering. The most important properties of on-site concrete mixtures mainly include fluidity, cohesiveness, and water retention. In existing mixing devices, the mixing blades rotate in one direction throughout the concrete mixing process, resulting in dead corners that cannot be stirred, poor mixing effects, and a large amount of concrete raw materials adhering to the inner wall of the mixing barrel and cannot be stirred during the mixing process. After long-term accumulation, it not only makes it difficult to clean the inside of the mixing barrel, but also causes waste of concrete raw materials. In view of this, we propose a concrete mixing device. Content of the Utility Model

[0003] In order to make up for the above deficiencies, the utility model provides a concrete mixing device.

[0004] The technical solution of the utility model is as follows:

[0005] The concrete mixing device includes a bracket, and a mixing barrel for mixing concrete is arranged on the bracket. It further includes: an inner barrel, which is located inside the mixing barrel and can rotate inside the mixing barrel. A number of mixing blades for mixing concrete are arranged around the outer wall of the inner barrel, and spiral blades with a direction opposite to its rotation direction are arranged inside the inner barrel; a cleaning component, which is arranged outside the inner barrel and includes symmetrically arranged scrapers that can rotate and scrape the inner wall of the mixing barrel.

[0006] Preferably, a rotating shaft is arranged at the bottom of the mixing barrel, the mixing barrel is located at the upper end of the rotating shaft, and a first power source for driving the rotating shaft to rotate is arranged at the bottom of the mixing barrel.

[0007] Preferably, a feeding hopper is arranged at the upper end of the mixing barrel, a mixing shaft extending into the inner barrel is arranged inside the mixing barrel, the mixing blades are arranged on the mixing shaft, and a second power source for driving the mixing shaft to rotate is arranged at the upper end of the mixing barrel.

[0008] Preferably, a connecting rod is arranged on the upper side of the stirring shaft. Vertical connecting plates are symmetrically arranged at both ends of the connecting rod. The scraping plates are respectively arranged on one side of the connecting plates. A number of groups of symmetrically arranged fixing rods are arranged between the connecting plates and the scraping plates. Fixing plates are respectively arranged at the opposite ends of the fixing rods. The fixing plates are all located inside the housing, and a number of elastic members are arranged between each group of fixing plates.

[0009] Preferably, an annular groove is formed on the inner wall below the mixing barrel. Guide plates are respectively connected to the lower sides of the connecting plates. One side of the guide plate extends into the annular groove.

[0010] Preferably, the elastic members are all springs.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] In the present utility model, by arranging spiral blades in the inner barrel, the concrete in the inner barrel is stirred and then pushed out of the inner barrel. The rotation direction of the inner barrel is opposite to that of the spiral blades. The stirring blades on its outer wall further stir the concrete, avoiding that the concrete at the dead corners cannot be stirred. At the same time, as the spiral blades rotate, the scraping plates scrape the inner wall of the mixing barrel, continuously cleaning the inner wall of the mixing barrel during the process of stirring the concrete, and reducing the waste of concrete raw materials. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 is a cross-sectional view of the mixing barrel in the present utility model;

[0015] Figure 3 is a schematic diagram of the structure of the inner barrel in the present utility model;

[0016] Figure 4 is a schematic diagram of the structure of the cleaning assembly in the present utility model;

[0017] Figure 5 is the present utility model Figure 4 magnified view of part A.

[0018] In the figure:

[0019] 1, support; 2, mixing barrel; 3, feed hopper; 4, first motor; 5, second motor; 6, cleaning assembly;

[0020] 21, annular groove;

[0021] 51, rotating shaft; 52, inner barrel; 521, spiral blade; 522, stirring blade; 53, stirring shaft;

[0022] 61. Connecting rod; 62. Connecting plate; 63. Scraper; 64. Guide plate; 65. Housing; 66. Fixed rod; 67. Fixed plate; 68. Spring. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0025] Please refer to Figures 1-5 :

[0026] A concrete mixing device, including a bracket 1, a mixing barrel 2 for mixing concrete is arranged on the bracket 1, and further includes: an inner barrel 52, the inner barrel 52 is located inside the mixing barrel 2, the inner barrel 52 can rotate inside the mixing barrel 2, and a plurality of mixing blades 522 for mixing concrete are arranged around the outer wall of the inner barrel 52; a cleaning assembly 6, the cleaning assembly 6 is arranged outside the inner barrel 52 and includes symmetrically arranged scrapers 63 that can rotate and scrape the inner wall of the mixing barrel 2.

[0027] In this embodiment, the mixing barrel 2 is fixedly installed at the upper end of the bracket 1, and a plurality of groups of mixing blades 522 are fixedly installed on the outer wall of the inner barrel 52. After the concrete is first mixed inside the inner barrel 52, the spiral blade 521 pushes the concrete out of the inner barrel 52, and the mixing blade 522 performs a second reverse mixing on it, so as to remix the concrete that cannot be mixed in the dead corner of the first mixing, improving the quality of concrete mixing.

[0028] A rotating shaft 51 is arranged at the bottom of the mixing barrel 2, the mixing barrel 2 is located at the upper end of the rotating shaft 51, and a first power source for driving the rotation of the rotating shaft 51 is arranged at the bottom of the mixing barrel 2.

[0029] In this embodiment, the bottom end of the rotating shaft 51 is rotatably connected to the bottom of the mixing barrel 2, and the upper end of the rotating shaft 51 is fixedly connected to the bottom of the inner barrel 52. The first power source is the second motor 5. Specifically, the second motor 5 is fixedly installed at the bottom of the mixing barrel 2, and its output shaft extends into the bottom of the mixing barrel 2 and is fixedly connected to the rotating shaft 51 to drive the rotating shaft 51 to rotate, thereby causing the inner barrel 52 to rotate. When the inner barrel 52 rotates, a plurality of stirring blades 522 on its outer wall also rotate accordingly to stir the concrete raw materials.

[0030] A feed hopper 3 is provided at the upper end of the mixing barrel 2. A stirring shaft 53 extending into the inner barrel 52 is provided inside the mixing barrel 2. The stirring blades 522 are arranged on the stirring shaft 53. A second power source for driving the stirring shaft 53 to rotate is provided at the upper end of the mixing barrel 2.

[0031] In this embodiment, the feed hopper 3 is fixedly installed at the upper end of the mixing barrel 2. The concrete coating raw materials are added into the inner barrel 52 through the feed hopper 3. The bottom end of the stirring shaft 53 is rotatably connected to the bottom of the inner barrel 52, and the top end is rotatably connected to the top of the mixing barrel 2. The second power source is the first motor 4. Specifically, the first motor 4 is fixedly installed at the upper end of the mixing barrel 2, and its output shaft is fixedly connected to the upper end of the stirring shaft 53 to drive the stirring shaft 53 to rotate. Among them, the spiral blade 521 is fixedly installed on the stirring shaft 53 and rotates as the stirring shaft 53 rotates to stir the concrete raw materials falling into the inner barrel 52 and push out the cemented concrete from the upper end of the inner barrel 52.

[0032] A connecting rod 61 is arranged above the stirring shaft 53. Vertical connecting plates 62 are symmetrically arranged at both ends of the connecting rod 61. Scrapers 63 are respectively arranged on one side of the connecting plates 62. A plurality of groups of symmetrically arranged fixing rods 66 are arranged between the connecting plates 62 and the scrapers 63. Fixing plates 67 are respectively arranged at the opposite ends of the fixing rods 66. The fixing plates 67 are all located inside the housing 65, and a plurality of elastic members are arranged between each group of fixing plates 67. The elastic members are all springs 68.

[0033] In this embodiment, the connecting rod 61 is fixedly connected above the stirring shaft 53. The connecting plates 62 are respectively fixedly connected to both ends of the connecting rod 61. A plurality of fixing rods 66 are respectively fixedly connected to one ends of the connecting plates 62 and the scrapers 63. The fixing plates 67 are respectively fixedly connected to one ends of the fixing rods 66. Among them, one side of the fixing rods 66 extends into the housing 65 and is slidably connected to the housing 65. The fixing plates 67 are all located inside the housing 65 and can slide inside the housing 65. Both ends of the spring 68 are respectively fixedly connected between two opposite fixing plates 67. When the scraper 63 rubs against the inner wall of the mixing barrel 2 and encounters larger gravel or stones, it can bounce appropriately to avoid damage to the scraper 63 or causing too much frictional force to hinder the rotation of the stirring shaft 53. Specifically, the scraper 63 is an inclined plate, which is convenient for scraping the inner wall of the mixing barrel 2.

[0034] An annular groove 21 is formed in the inner wall below the mixing barrel 2. Guide plates 64 are respectively connected to the lower sides of the connecting plates 62, and one side of each guide plate 64 extends into the annular groove 21.

[0035] In this embodiment, the guide plates 64 are fixedly connected to the lower sides of the connecting plates 62, and one side of each guide plate 64 extends into the annular groove 21. As the connecting plates 62 rotate in the mixing barrel 2, the guide plates 64 move in the annular groove 21, making the connection of the connecting plates 62 more stable.

[0036] During specific use, concrete coating raw materials are added into the inner barrel 52 through the feed hopper 3. The first motor 4 is started to drive the stirring shaft 53 to rotate. The spiral blades 521 are fixedly installed on the stirring shaft 53. As the stirring shaft 53 rotates, the concrete raw materials falling into the inner barrel 52 are stirred and the cemented concrete is pushed out from the upper end of the inner barrel 52. When the stirring shaft 53 rotates, the connecting rod 61 rotates together, and the scraping plate 63 rotates accordingly to scrape the inner wall of the mixing barrel 2. The concrete falls into the mixing barrel 2 outside the inner barrel 52. The second motor 5 is started to drive the rotating shaft 51 to rotate, so that the inner barrel 52 rotates. When the inner barrel 52 rotates, a plurality of stirring blades 522 on its outer wall also rotate accordingly to further stir the concrete raw materials.

[0037] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Concrete mixing device, including a bracket (1), on which a mixing barrel (2) for mixing concrete is provided, characterized in that: It further includes: An inner barrel (52), which is located inside the mixing barrel (2). The inner barrel (52) can rotate inside the mixing barrel (2). A plurality of stirring blades (522) for stirring concrete are arranged around the outer wall of the inner barrel (52), and a spiral blade (521) with a rotation direction opposite to that of the inner barrel (52) is arranged inside the inner barrel (52). A cleaning component (6), which is arranged outside the inner barrel (52) and includes symmetrically arranged scrapers (63) that can rotate and scrape the inner wall of the mixing barrel (2).

2. The concrete mixing device according to claim 1, wherein: A rotating shaft (51) is arranged at the bottom of the mixing barrel (2). The mixing barrel (2) is located at the upper end of the rotating shaft (51), and a first power source for driving the rotation of the rotating shaft (51) is arranged at the bottom of the mixing barrel (2).

3. The concrete mixing device according to claim 1, characterized in that: A feed hopper (3) is arranged at the upper end of the mixing barrel (2). A stirring shaft (53) extending into the inner barrel (52) is arranged inside the mixing barrel (2). The stirring blades (522) are arranged on the stirring shaft (53), and a second power source for driving the rotation of the stirring shaft (53) is arranged at the upper end of the mixing barrel (2).

4. The concrete mixing device according to claim 3, characterized in that: A connecting rod (61) is arranged above the stirring shaft (53). Vertical connecting plates (62) are symmetrically arranged at both ends of the connecting rod (61). The scrapers (63) are respectively arranged on one side of the connecting plates (62). A plurality of groups of symmetrically arranged fixing rods (66) are arranged between the connecting plates (62) and the scrapers (63). Fixing plates (67) are respectively arranged at the opposite ends of the fixing rods (66). The fixing plates (67) are all located inside the housing (65), and a plurality of elastic members are arranged between each group of the fixing plates (67).

5. The concrete mixing device according to claim 4, characterized in that: An annular groove (21) is formed on the inner wall below the mixing barrel (2). Guide plates (64) are respectively connected to the lower sides of the connecting plates (62), and one side of each guide plate (64) extends into the annular groove (21).

6. The concrete mixing device according to claim 4, characterized in that: The elastic members are all springs (68).

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