A mixer for a concrete mixing plant

Abstract

This utility model discloses a mixer for a concrete mixing plant, featuring a hollow rotating shaft rotatably mounted inside a mixing tank via bearings. Hollow mixing rods are fixedly mounted in a ring array on the outside of the hollow rotating shaft. A drain plug is slidably mounted on the end of each hollow mixing rod furthest from the hollow rotating shaft via a slot. When the drain plug is moved to the end of the hollow mixing rod furthest from the hollow rotating shaft, water inside the hollow rotating shaft can drain through the drain plug and the external hole of the hollow rotating shaft. When the drain plug moves closer to the hollow rotating shaft, the drain plug and the external hole of the hollow rotating shaft cannot form a passage, preventing water from draining. This achieves multi-directional water injection inside the device, allowing water to contact cement from multiple directions, preventing water from contacting the upper layer of cement, increasing the contact area between water and cement, and improving the efficiency of thorough mixing.

Description

Technical Field

[0001] This utility model relates to the field of mixers for concrete batching plants, and more particularly to a mixer for a concrete batching plant. Background Technology

[0002] Concrete mixing is an operation method that mixes and homogenizes materials such as cement, lime, and water. There are two types of concrete mixing: manual mixing and mechanical mixing. Concrete batching plants are widely used in construction projects in my country's industry, agriculture, transportation, national defense, water conservancy, and municipal sectors, and the demand is constantly increasing. For example, the Chinese authorized patent with publication number CN 222832077 U (a mixer for a concrete batching plant) uses a main mixing roller in conjunction with two sets of auxiliary mixing rollers to uniformly mix concrete raw materials. This multi-directional mixing promotes contact between the raw materials, ensuring thorough mixing of the concrete within the mixer, preventing stratification, and achieving strong uniformity. However, when using this concrete batching plant's mixer, the water in the concrete raw materials enters the device and comes into contact with the upper layer of cement, resulting in a low contact area between water and cement. This requires multiple rotations under the action of the mixing rod for the water to fully mix with the cement, thus reducing the mixing efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a mixer for a concrete batching plant.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The present invention relates to a mixer for a concrete batching plant, comprising a mixing tank:

[0006] A hollow rotating shaft is rotatably mounted inside the mixing box via bearings. Hollow stirring rods are fixedly mounted in a ring array on the outside of the hollow rotating shaft. A drain plug is slidably mounted on the end of the hollow stirring rod away from the hollow rotating shaft via a slot. A telescopic stirring bracket is fixedly mounted on the end of the drain plug away from the hollow rotating shaft. A material scrambling plate is fixedly mounted on the end of the telescopic stirring bracket away from the hollow rotating shaft.

[0007] A limiting bracket is fixedly installed inside the hollow stirring rod at one end near the hollow rotating shaft. A pull-back spring is installed on the outside of the limiting bracket. The pull-back spring is fixedly connected to the limiting bracket and the control box. A water inlet pipe is installed at one end of the hollow rotating shaft through a pipe rotary joint.

[0008] Furthermore, support brackets are installed on both sides of the lower end of the mixing tank, the support brackets are fixedly connected to the mixing tank, and a flow guide bracket is fixedly installed at the lower end of the support brackets.

[0009] Furthermore, a stirring motor is fixedly installed at the end of the mixing tank away from the water inlet pipe, and the stirring motor is connected to the hollow rotating shaft via a coupling.

[0010] Furthermore, a control box is installed on the outside of the support bracket, and the control box is fixedly connected to the support bracket.

[0011] Furthermore, a sealing cover is installed at the upper end of the mixing chamber, and the sealing cover is connected to the mixing chamber by a hinge.

[0012] Furthermore, a discharge plate is installed at the lower end of the mixing box, and the discharge plate is connected to the mixing box by screws.

[0013] Furthermore, a one-way valve is installed at the end of the hollow stirring rod away from the hollow rotating shaft, and the one-way valve is fixedly connected to the hollow stirring rod.

[0014] In the above technical solution, the mixer of the concrete batching plant provided by this utility model has the following beneficial effects:

[0015] 1. Installing a drain plug allows the hollow mixing rod to be moved to the end away from the hollow rotating shaft. Water inside the hollow rotating shaft can then be discharged through the drain plug and the external hole of the hollow rotating shaft. When the drain plug moves closer to the hollow rotating shaft, the drain plug and the external hole of the hollow rotating shaft cannot form a passage, preventing water from being discharged. This enables multi-directional water injection inside the device, allowing water to contact cement from multiple directions, preventing water from contacting the upper layer of cement, increasing the contact area between water and cement, and improving the efficiency of thorough mixing of water and cement.

[0016] 2. Installing a pull-back spring allows the telescopic mixing bracket to retract, enabling it to retract into the hollow mixing rod when water pressure decreases. This allows for adjustment of the position of the material-dispersing plate, facilitating thorough mixing of the concrete inside the device and enhancing its practicality. The hollow mixing rod also allows for concrete mixing while retracting the telescopic mixing bracket, making it easier for workers to adjust its position using water pressure, thus increasing the device's flexibility. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A three-dimensional view of a mixer in a concrete batching plant;

[0019] Figure 2 This is a schematic diagram of the internal structure of a mixer in a concrete batching plant.

[0020] Figure 3 This describes the connection relationship between the mixing tank and the discharge plate in a concrete mixing plant's mixer.

[0021] Figure 4 This diagram illustrates the connection between the hollow mixing rod and the telescopic mixing support in a mixer of a concrete batching plant.

[0022] Figure 5 A bottom-view perspective view of a mixer in a concrete batching plant;

[0023] Figure 6 for Figure 4 Enlarged view of section A in the middle.

[0024] In the diagram: 1. Mixing box; 2. Sealing cover; 3. Stirring motor; 4. Support bracket; 5. Control box; 6. Flow guide bracket; 7. Limiting bracket; 8. Water inlet pipe; 9. Hollow rotating shaft; 10. Hollow stirring rod; 11. One-way valve; 12. Telescopic stirring bracket; 13. Material scrambling plate; 14. Discharge plate; 15. Drain plug; 16. Pull-back spring. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Reference Figure 1-6 One embodiment of this utility model is a mixer for a concrete mixing plant, comprising a mixing tank 1:

[0027] A hollow rotating shaft 9 is rotatably mounted inside the mixing tank 1 via bearings. Hollow mixing rods 10 are fixedly mounted in a ring array on the outside of the hollow rotating shaft 9. The hollow mixing rods 10 can be used to mix concrete and simultaneously retract a telescopic mixing support 12 into the shaft, allowing operators to adjust the position of the telescopic mixing support 12 using water pressure, thus enhancing the flexibility of the device. A drain plug 15 is slidably mounted on the end of the hollow mixing rod 10 away from the hollow rotating shaft 9 via a slot. Installing the drain plug 15 allows the shaft 10 to be moved to the end away from the hollow rotating shaft 9, allowing water to drain from the inside of the hollow rotating shaft 9. Water can be discharged through the drain plug 15 and the external hole of the hollow rotating shaft 9. When the drain plug 15 moves closer to the hollow rotating shaft 9, the drain plug 15 and the external hole of the hollow rotating shaft 9 cannot form a passage, so that water cannot be discharged. This enables multi-directional water injection inside the device, allowing water to contact cement in multiple directions, preventing water from contacting the upper layer of cement, increasing the contact area between water and cement, and improving the efficiency of water and cement mixing. A telescopic mixing bracket 12 is fixedly installed at the end of the drain plug 15 away from the hollow rotating shaft 9, and a material scrambling plate 13 is fixedly installed at the end of the telescopic mixing bracket 12 away from the hollow rotating shaft 9.

[0028] The limiting bracket 7 is fixedly installed inside the hollow mixing rod 10 at one end near the hollow rotating shaft 9. A pull-back spring 16 is installed on the outside of the limiting bracket 7. The pull-back spring 16 can pull back the telescopic mixing bracket 12, so that the telescopic mixing bracket 12 can retract into the hollow mixing rod 10 when the water pressure decreases, thereby adjusting the position of the material stirring plate 13. This facilitates the material stirring plate 13 to fully mix the concrete inside the device, enhancing the practicality of the device. The pull-back spring 16 is fixedly connected to the limiting bracket 7 and the control box 5. One end of the hollow rotating shaft 9 is connected to a water inlet pipe 8 through a pipe rotary joint.

[0029] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6Both sides of the lower end of the mixing tank 1 are equipped with support brackets 4, which are fixedly connected to the mixing tank 1. A guide bracket 6 is fixedly installed at the lower end of the support bracket 4. The installation of the guide bracket 6 facilitates the smooth discharge of concrete, making it easier for workers to collect large quantities of concrete quickly, which helps improve the work efficiency of workers. A mixing motor 3 is fixedly installed at the end of the mixing tank 1 away from the water inlet pipe 8. The mixing motor 3 is connected to the hollow rotating shaft 9 through a coupling. A control box 5 is installed on the outside of the support bracket 4, which is fixedly connected to the support bracket 4. A sealing cover 2 is installed at the upper end of the mixing tank 1, which is connected to the mixing tank 1 through a hinge. A discharge plate 14 is installed at the lower end of the mixing tank 1, which is connected to the mixing tank 1 through screws. A one-way valve 11 is installed at the outside of the hollow mixing rod 10 away from the hollow rotating shaft 9, which is fixedly connected to the hollow mixing rod 10.

[0030] The specific usage process of this utility model is as follows: The operator connects the external water pump to the inlet pipe 8. Then, the operator adds cement and sand into the device through the upper end of the mixing tank 1, and then closes the sealing cover 2. Next, the mixing motor 3 drives the hollow rotating shaft 9 to rotate, thereby causing the hollow mixing rod 10, the telescopic mixing bracket 12, and the material stirring plate 13 to mix the concrete raw materials. Simultaneously, the water pump injects clean water into the hollow rotating shaft 9 and the hollow mixing rod 10 through the inlet pipe 8. As water is continuously injected, the water pressure inside the hollow rotating shaft 9 and the hollow mixing rod 10 gradually increases, causing the water to overcome the tension of the return spring 16 under pressure, pushing the drain plug 15 to drain the water. The water plug 15 moves away from the hollow rotating shaft 9, thus creating a passage between the drain plug 15 and the external hole of the hollow rotating shaft 9. At this time, the water pressure is relatively high, and the water at a certain pressure meets the drainage requirements of the one-way valve 11. Then, the water is discharged from the hollow mixing rod 10 through the one-way valve 11, allowing the water to contact the cement from multiple directions and angles, thereby improving the mixing efficiency of the concrete. As the hollow rotating shaft 9 continues to rotate, the concrete is gradually mixed. Then, the worker opens the discharge plate 14, allowing the concrete to be discharged from the device through the guide bracket 6. During cleaning, the water pump continuously injects clean water into the hollow rotating shaft 9 and the hollow mixing rod 10, causing the telescopic mixing bracket 12 to... Under water pressure, the material spreading plate 13 extends and contacts the inner wall of the mixing tank 1. Simultaneously, the stirring motor 3 drives the hollow rotating shaft 9 to rotate, causing the material spreading plate 13 to scrape the inner wall of the mixing tank 1, keeping it clean and reducing the difficulty of cleaning the device. The device, equipped with a hollow stirring rod 10, can mix concrete and simultaneously retract the telescopic mixing support 12, facilitating the adjustment of the telescopic mixing support 12's position by operators using water pressure, enhancing the device's flexibility. Installing a drain plug 15 allows the device to be moved to the end of the hollow stirring rod 10 away from the hollow rotating shaft 9, enabling water flow inside the hollow rotating shaft 9 to pass through the drain plug 15 and the hollow rotating shaft 9. The water drains out through the external hole of the hollow rotating shaft 9. When the drain plug 15 moves closer to the end of the hollow rotating shaft 9, the drain plug 15 and the external hole of the hollow rotating shaft 9 cannot form a passage, preventing water from draining out. This allows for multi-directional water injection inside the device, enabling water to contact cement from multiple directions and preventing water from contacting the upper layer of cement. This increases the contact area between water and cement and improves the efficiency of water and cement mixing. The installation of the pull-back spring 16 can pull back the telescopic mixing bracket 12, allowing the telescopic mixing bracket 12 to retract into the hollow mixing rod 10 when the water pressure decreases. This adjusts the position of the material shovel 13, facilitating thorough mixing of the concrete inside the device and enhancing the practicality of the device.

[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A mixer for a concrete batching plant, comprising a mixing tank (1), characterized in that: A hollow rotating shaft (9) is rotatably mounted inside the mixing box (1) via bearings. A hollow stirring rod (10) is fixedly mounted in a ring array on the outside of the hollow rotating shaft (9). A drain plug (15) is slidably mounted on the end of the hollow stirring rod (10) away from the hollow rotating shaft (9) via a slot. A telescopic stirring bracket (12) is fixedly mounted on the end of the drain plug (15) away from the hollow rotating shaft (9). A material scrambling plate (13) is fixedly mounted on the end of the telescopic stirring bracket (12) away from the hollow rotating shaft (9). A limiting bracket (7) is fixedly installed inside the hollow stirring rod (10) at one end near the hollow rotating shaft (9). A pull-back spring (16) is installed on the outside of the limiting bracket (7). The pull-back spring (16) is fixedly connected to the limiting bracket (7) and the control box (5). A water inlet pipe (8) is installed at one end of the hollow rotating shaft (9) through a pipe rotary joint.

2. The mixer of a concrete batching plant according to claim 1, characterized in that, Support brackets (4) are installed on both sides of the lower end of the mixing tank (1). The support brackets (4) are fixedly connected to the mixing tank (1). A flow guide bracket (6) is fixedly installed at the lower end of the support brackets (4).

3. The mixer of a concrete batching plant according to claim 1, characterized in that, A stirring motor (3) is fixedly installed at the end of the mixing tank (1) away from the water inlet pipe (8), and the stirring motor (3) is connected to the hollow rotating shaft (9) through a coupling.

4. The mixer of a concrete batching plant according to claim 2, characterized in that, A control box (5) is installed on the outside of the support bracket (4), and the control box (5) is fixedly connected to the support bracket (4).

5. The mixer of a concrete batching plant according to claim 1, characterized in that, A sealing cover (2) is installed on the upper end of the mixing box (1), and the sealing cover (2) is connected to the mixing box (1) by a hinge.

6. The mixer of a concrete batching plant according to claim 1, characterized in that, A discharge plate (14) is installed at the lower end of the mixing box (1), and the discharge plate (14) is connected to the mixing box (1) by screws.

7. The mixer of a concrete batching plant according to claim 1, characterized in that, A one-way valve (11) is installed at the end of the hollow stirring rod (10) away from the hollow rotating shaft (9), and the one-way valve (11) is fixedly connected to the hollow stirring rod (10).

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