Mixer for concrete

Abstract

The utility model discloses a mixer for concrete, relates to the field of concrete processing equipment, and adopts the technical scheme that the mixer comprises a rack and a mixing drum, the mixing drum is provided with an opening, the peripheral wall of the mixing drum is fixedly connected with a mounting ring, the mounting ring surrounds the opening, and one end, provided with the opening, of the mixing drum extends out of the center of the mounting ring; and an end cover for sealing the opening is clamped on the mounting ring. The end cover is clamped on the mounting ring, so that the end cover seals the opening, and the flow speed of air in the mixing drum is greatly reduced, so that the water loss speed in concrete is reduced, the concrete is not easy to solidify, the possibility of concrete solidification in interval time periods is relatively low, and the service life of the concrete is prolonged. The crack resistance of the concrete can be improved under the stirring of the concrete in the form, and the end cover can be fixed on the mounting ring quickly in a clamping manner, so that the operation of people is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of concrete processing equipment, and more specifically, it relates to a concrete mixer. Background Technique

[0002] Concrete is one of the most important civil engineering materials in modern times. It is prepared by mixing cementitious materials, granular aggregates, water, and additives and admixtures added as necessary in a certain proportion, and it needs to be stirred during the preparation process to make the mixing of various materials more uniform. Therefore, during this process, people need to use a mixer.

[0003] The mixer includes a mixing drum. There is an opening in the mixing drum, and several stirring blades are fixedly connected to the inner wall of the mixing drum. People put the raw materials of concrete and water into the mixing drum through the opening for stirring. After the stirring is completed, the inclination angle of the mixing drum is adjusted so that the opening position of the mixing drum faces downward, and the concrete in the mixing drum pours out of the mixing drum due to the action of gravity.

[0004] After the existing mixer is used, its mixing drum generally needs to be rinsed to wash off the concrete on the inner wall of the mixing drum to prevent the remaining concrete from solidifying on the inner wall of the mixing drum. Therefore, the rinsing needs to be more meticulous. However, the rinsing is generally an operation carried out after the mixer is used. And there will always be a certain time interval during the process of people using the mixer. When the mixer stops, the concrete on the inner wall of the mixing drum is prone to a certain degree of solidification, and the rinsing method is relatively time-consuming.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Content of the Utility Model

[0006] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a concrete mixer.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: A concrete mixer includes a frame and a mixing drum. There is an opening on the mixing drum. An installation ring is fixedly connected to the outer peripheral wall of the mixing drum. The installation ring surrounds the opening. One end of the mixing drum with the opening extends out of the center of the installation ring. An end cover for closing the opening is clamped on the installation ring. When the end cover is clamped on the installation ring, there is a distance between the end cover and the opening.

[0008] The utility model is further arranged as follows: A ring groove for being embedded by the installation ring is opened on one side of the end cover. A plurality of annular clamping grooves are opened on the inner peripheral wall of the installation ring. A clamping ring for being clamped into the clamping groove is fixedly connected to the inner wall of the ring groove.

[0009] The present utility model is further configured as follows: Two circular holes are formed in one side of the mounting ring facing away from the mixing drum. Positioning rods are provided in both of the two circular holes. The positioning rods can move along the depth direction of the circular holes. Positioning holes for passing through the positioning rods are formed in the bottom of the annular groove.

[0010] The present utility model is further configured as follows: The two circular holes are arranged close to each other.

[0011] The present utility model is further configured as follows: The positioning rods are threadedly connected in the circular holes.

[0012] The present utility model is further configured as follows: The length of the positioning rods is greater than the depth of the positioning holes.

[0013] In summary, the present utility model has the following beneficial effects: When the concrete is poured out from the opening position of the mixing drum, the concrete is not easily contaminated on the mounting ring. By clamping the end cover on the mounting ring, the opening is closed by the end cover. With such a setting, the flow rate of the air in the mixing drum is greatly reduced, so that the water loss rate of the concrete is decreased, and further the concrete is not easily solidified, ensuring that the possibility of the concrete solidifying within an interval time period is relatively low. Secondly, the clamping method makes the speed of fixing the end cover on the mounting ring faster, facilitating the operation of people. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural view of the present utility model;

[0015] Figure 2 is Figure 1 an enlarged view of part A in

[0016] Figure 3 is a partial cross-section of the present utility model Figure 1 for showing the position of the mounting ring and the opening;

[0017] Figure 4 is a partial cross-section of the present utility model Figure 2 for showing the state of the end cover being clamped on the mounting ring.

[0018] In the figure: 1, frame; 2, mixing drum; 3, opening; 4, mounting ring; 5, end cover; 6, annular groove; 7, clamping groove; 8, clamping ring; 9, circular hole; 10, positioning rod; 11, positioning hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be described in detail below with reference to the drawings and embodiments.

[0020] A concrete mixer, such as Figure 1 and Figure 3As shown, it includes a frame 1 and a mixing drum 2. An opening 3 is provided on the mixing drum 2. A mounting ring 4 is fixedly connected to the outer peripheral wall of the mixing drum 2. The mounting ring 4 surrounds the opening 3. One end of the mixing drum 2 where the opening 3 is provided extends out of the center of the mounting ring 4. An end cover 5 for closing the opening 3 is clamped on the mounting ring 4. There is a spacing between the end of the mounting ring 4 facing away from the mixing drum 2 and the position of the opening 3 of the mixing drum 2. Thus, when the concrete is poured out from the opening 3 position of the mixing drum 2, the concrete is not easily contaminated by the mounting ring 4. By clamping the end cover 5 on the mounting ring 4, the end cover 5 closes the opening 3. Such a setting greatly slows down the flow rate of air in the mixing drum 2, thereby reducing the water loss rate of the concrete inside, and further making the concrete not easily solidify, ensuring that the possibility of the concrete solidifying within an interval period is relatively low. Secondly, the clamping method makes the fixing speed of the end cover 5 on the mounting ring 4 faster. When the end cover 5 is clamped on the mounting ring 4, there is a distance between the end cover 5 and the opening 3, so that the inner side of the port does not contact the mixing drum 2, thereby reducing the amount of concrete adhered to the end cover 5.

[0021] As Figure 3 and Figure 4 shown, a ring groove 6 for the mounting ring 4 to be inserted into is provided on one side of the end cover 5. A plurality of annular clamping grooves 7 are provided on the inner peripheral wall of the mounting ring 4. A clamping ring 8 for being inserted into the clamping groove 7 is fixedly connected to the inner wall of the ring groove 6. The clamping ring 8 is made of rubber. By inserting the mounting ring 4 into the ring groove 6 until the clamping ring 8 abuts against the bottom of the ring groove 6, at this time, the clamping ring 8 is inserted into the clamping groove 7, and the clamping ring 8 seals the gap between the inner side of the mounting ring 4 and the ring groove 6, thereby increasing the sealing performance between the mounting ring 4 and the ring groove 6, making air not easily enter the mixing drum 2, and increasing the clamping strength between the mounting ring 4 and the end cover 5 through the deformation of the clamping ring 8. The cross-sections of both the clamping groove 7 and the clamping ring 8 are semi-circular. The clamping ring 8 is made of a deformable rubber material, so that people can separate the mounting ring 4 and the end cover 5 by directly pulling out the end cover 5. The end cover 5 is made of plastic material. The density of the plastic itself is relatively light and the plastic can undergo a certain amount of elastic deformation, thus facilitating the insertion of the mounting ring 4 into the ring groove 6.

[0022] As Figure 2 and Figure 4As shown, two round holes 9 are formed on the side of the mounting ring 4 facing away from the mixing drum 2. Positioning rods 10 are provided in both of the two round holes 9. The positioning rods 10 can move along the depth direction of the round holes 9. Positioning holes 11 for passing through the positioning rods 10 are formed on the bottom of the annular groove 6. The positioning rods 10 move in the direction away from the round holes 9, so that one end of the positioning rod 10 is located in front of the opening 3. People first pass the two positioning rods 10 through the two positioning holes 11 respectively. When the two positioning rods 10 pass through the two positioning holes 11 respectively, the mounting ring 4 is aligned with the annular groove 6. At this time, people then snap the mounting ring 4 into the annular groove 6. The two round holes 9 are arranged close to each other. Such an arrangement makes the two positioning rods 10 close to each other, which is convenient for people to snap the two positioning rods 10 into the two positioning holes 11 respectively. External threads are provided on the outer peripheral wall of the positioning rod 10, and internal threads are provided on the inner wall of the round hole 9. The positioning rod 10 is threadedly connected in the round hole 9. People can move the positioning rod 10 along the depth direction of the round hole 9 by rotating the positioning rod 10. And the thread has self-locking property, making the rotated positioning rod 10 not easy to retract into the round hole 9. The length of the positioning rod 10 is greater than the depth of the positioning hole 11, so that one end of the positioning rod 10 is always exposed outside the positioning hole 11. The length of the positioning rod 10 is greater than the depth of the round hole 9, so that one end of the positioning rod 10 is always exposed, which is convenient for people to rotate the positioning rod 10. When the positioning rod 10 moves to the deepest part of the round hole 9, the end of the positioning rod 10 exposed outside the round hole 9 is located between the opening 3 and the mounting ring 4.

[0023] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A concrete mixer, characterized in that: It includes a frame (1) and a mixing drum (2). An opening (3) is provided on the mixing drum (2). An installation ring (4) is fixedly connected to the outer peripheral wall of the mixing drum (2). The installation ring (4) surrounds the opening (3). One end of the mixing drum (2) where the opening (3) is provided extends out of the center of the installation ring (4). An end cover (5) for closing the opening (3) is snap-fitted on the installation ring (4). When the end cover (5) is snap-fitted on the installation ring (4), there is a distance between the end cover (5) and the opening (3).

2. The concrete mixer according to claim 1, characterized in that: A ring groove (6) for being embedded by the installation ring (4) is provided on one side of the end cover (5). A plurality of annular clamping grooves (7) are provided on the inner peripheral wall of the installation ring (4). A clamping ring (8) for being clamped into the clamping groove (7) is fixedly connected to the inner wall of the ring groove (6).

3. The concrete mixer according to claim 2, characterized in that: Two circular holes (9) are provided on the side of the installation ring (4) facing away from the mixing drum (2). A positioning rod (10) is provided in each of the two circular holes (9). The positioning rod (10) can move along the depth direction of the circular hole (9). A positioning hole (11) for passing through the positioning rod (10) is provided on the bottom of the ring groove (6).

4. The concrete mixer according to claim 3, characterized in that: The two circular holes (9) are arranged close to each other.

5. The concrete mixer according to claim 4, characterized in that: The positioning rod (10) is threadedly connected in the circular hole (9).

6. The concrete mixer according to claim 5, characterized in that: The length of the positioning rod (10) is greater than the depth of the positioning hole (11).

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