Sprayed concrete accelerator mixer

Abstract

The utility model discloses a sprayed concrete accelerator mixer, and belongs to the technical field of concrete construction. Comprising a mixing box, a telescopic cylinder and a telescopic rod, a spiral blade is rotationally connected into the mixing box; an output shaft of the motor is fixedly connected with the spiral blade; a supporting shaft is fixedly installed on the mixing box and rotationally connected with a fixing base, a plurality of guide rails are fixedly installed on the fixing base, telescopic cylinders are slidably connected with the corresponding guide rails, output shafts of the telescopic cylinders are rotationally connected with the mixing box, one ends of telescopic rods are slidably connected with the corresponding guide rails, and the other ends of the telescopic rods are rotationally connected with the mixing box. An output shaft of a motor drives a spiral blade to rotate, the spiral blade drives mixed soil and an accelerator to be continuously mixed, the mixing effect is effectively improved, an output shaft of a telescopic cylinder pushes one end of a mixing box to regularly ascend and descend, the mixing box rotates up and down around a supporting shaft, and therefore the accelerator can fully flow in the mixing box; the mixing effect is further improved, and the mixing sufficiency is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of concrete construction, and more specifically, to a shotcrete quick-setting agent mixer. Background Art

[0002] Shotcrete is a type of concrete that uses the same raw materials as ordinary concrete but has a special construction process. Shotcrete is a form of support and construction method that mixes cement, sand, and stone in a certain proportion, sends them into a concrete sprayer, uses compressed air to press the dry mix to the nozzle, adds water to the water ring of the nozzle, and then sprays it at high speed onto the surface of the tunnel surrounding rock to play a supporting role. In mine shafts and tunnels, shotcrete support combined with anchor support is used to replace the original stone masonry and concrete lining, and significant results have been achieved.

[0003] The document with the prior art publication number CN216127482U provides a shotcrete accelerator mixer, which can stir the accelerator, cement, sand and stone inside a mixing box through the arrangement of a first drive motor, a first drive shaft and a first spiral blade. The accelerator, cement, sand and stone at the bottom of the mixing box can be transported upward and stirred through the arrangement of a second drive motor, a second drive shaft and a second spiral blade, thereby effectively preventing uneven mixing of the accelerator, cement, sand and stone inside the mixing box and effectively improving the mixing efficiency.

[0004] The above-mentioned mixer increases the mixing degree of the internal materials by adding a second drive motor, a second drive shaft and a second spiral blade, but also increases the number and cost of the driving equipment inside the mixer, and increases the complexity of the internal mixing environment. In view of this, we propose a shotcrete accelerator mixer. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The purpose of the present application is to provide a shotcrete accelerating agent mixer, which solves the technical problem of improving the mixing effect by adding more driving devices inside the prior art, thereby reducing the number of driving parts for internal mixing and the complexity of the mixing environment without affecting the mixing effect of concrete and accelerating agent.

[0007] 2. Technical solution

[0008] The embodiment of the present application provides a shotcrete quick-setting agent mixer, comprising a mixing box, a telescopic cylinder and a telescopic rod;

[0009] The mixing box is rotatably connected with a spiral blade for mixing and stirring;

[0010] A motor is fixedly mounted on the mixing box, and an output shaft of the motor is fixedly connected to the spiral blade;

[0011] A support shaft is fixedly mounted on the mixing box, and the support shaft is rotatably connected to the fixing seat.

[0012] A plurality of guide rails are fixedly mounted on the fixed seat, the telescopic cylinder is slidably connected to the corresponding guide rails, the output shaft of the telescopic cylinder is rotatably connected to the mixing box, one end of the telescopic rod is slidably connected to the corresponding guide rail, and the other end is rotatably connected to the mixing box.

[0013] By adopting the above technical solution, when the accelerator is mixed with concrete, the output shaft of the motor drives the spiral blade to rotate, so that the spiral blade drives the mixed soil and the accelerator to be mixed continuously, effectively improving the mixing effect. The output shaft of the telescopic cylinder drives one end of the mixing box to rise and fall regularly, so that the mixing box rotates up and down around the supporting shaft, so that the accelerator can flow fully in the mixing box, further improving the mixing effect and ensuring the adequacy of the mixing.

[0014] As an optional solution of the technical solution of this application document, the telescopic rod and the telescopic cylinder are respectively located on both sides of the supporting shaft.

[0015] As an optional solution of the technical solution of this application document, a plurality of heating zones are provided on the mixing box for heating.

[0016] By adopting the above technical solution and setting the heating zone, the working stability of the mixing box can be effectively controlled, so that the working temperature of the accelerator is between 50°C and 80°C, ensuring that the accelerator can fully exert its effect and avoid problems such as concrete drying or freezing.

[0017] As an optional solution of the technical solution of the present application document, it also includes a quantity control box, in which a partition is arranged, and the partition divides the quantity control box into two quantity control areas, and the storage tank is connected to the corresponding quantity control area.

[0018] As an optional solution of the technical solution of this application document, a liquid level sensor is installed in each control area to monitor the liquid level height.

[0019] By adopting the above technical solution, after the accelerator and clean water are added to the quantity control area, the liquid level sensor monitors the liquid level height in the quantity control area, and calculates the added amount according to the cross-sectional area of ​​the quantity control area, thereby realizing the quantity control of the accelerator and clean water;

[0020] When in use, open the control valve at the liquid inlet of the control volume box, distribute the accelerator and clean water into the control volume area, when the liquid level sensor detects that the liquid level has reached the set height, the liquid supply is stopped, and the control valve at the liquid outlet is started at the same time, the accelerator and clean water enter the mixing box to mix with the concrete, the output shaft of the motor drives the spiral blade to rotate, so that the spiral blade drives the mixed soil and the accelerator to mix continuously, and the output shaft of the telescopic cylinder pushes one end of the mixing box to rise and fall regularly, so that the mixing box rotates up and down around the supporting shaft, so that the accelerator can flow fully in the mixing box, thereby improving the mixing effect.

[0021] 3. Beneficial effects

[0022] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0023] 1. In the present application, when mixing the accelerating setting agent with concrete, the output shaft of the motor drives the spiral blade to rotate, so that the spiral blade drives the mixed soil and the accelerating setting agent to be continuously mixed, effectively improving the mixing effect. The output shaft of the telescopic cylinder pushes one end of the mixing box to rise and fall regularly, so that the mixing box rotates up and down around the supporting shaft, so that the accelerating setting agent can fully flow in the mixing box, further improving the mixing effect and ensuring the adequacy of the mixing.

[0024] 2. This application effectively controls the working stability of the mixing box by setting the heating zone, so that the working temperature of the accelerator is between 50°C and 80°C, ensuring that the accelerator can fully exert its effect and avoid problems such as concrete drying or freezing.

[0025] 3. In this application, after the accelerator and clean water are added to the control area, the liquid level sensor monitors the liquid level height in the control area and calculates the added amount based on the cross-sectional area of ​​the control area, thereby achieving the control of the amount of the accelerator and clean water. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a shotcrete accelerating agent mixer disclosed in a preferred embodiment of the present application;

[0027] Figure 2 It is a partial cross-sectional view of a shotcrete accelerating agent mixer disclosed in a preferred embodiment of the present application.

[0028] Explanation of the numbers in the figure: 1. Mixing box; 2. Spiral blade; 3. Motor; 4. Support shaft; 5. Fixed seat; 6. Guide rail; 7. Telescopic cylinder; 8. Telescopic rod; 9. Heating zone; 10. Quantity control box; 11. Partition; 12. Liquid level sensor; 13. Storage tank. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings.

[0030] Reference Figure 1 and Figure 2 The embodiment of the present application discloses a shotcrete quick-setting agent mixer, including a mixing box 1, in which a spiral blade 2 is rotatably connected for mixing and stirring, a motor 3 is fixedly installed on the mixing box 1, and the output shaft of the motor 3 is fixedly connected to the spiral blade 2, and the motor 3 is used to drive the spiral blade 2 to rotate in the mixing box 1, a support shaft 4 is fixedly installed on the mixing box 1, and the support shaft 4 is rotatably connected to a fixed seat 5, the support shaft 4 is located in the middle of the mixing box 1, and a plurality of guide rails 6 are fixedly installed on the fixed seat 5, the mixer also includes a telescopic cylinder 7 and a telescopic rod 8, the base of the telescopic cylinder 7 is slidably connected to the corresponding guide rail 6, the output shaft of the telescopic cylinder 7 is rotatably connected to the mixing box 1, one end of the telescopic rod 8 is slidably connected to the corresponding guide rail 6, and the other end is rotatably connected to the mixing box 1, and the telescopic rod 8 and the telescopic cylinder 7 are respectively located on both sides of the support shaft 4 and at both ends of the mixing box 1. When the accelerator is mixed with concrete, the output shaft of the motor 3 drives the spiral blade 2 to rotate, so that the spiral blade 2 drives the mixed soil and the accelerator to be mixed continuously, effectively improving the mixing effect. The output shaft of the telescopic cylinder 7 drives one end of the mixing box 1 to rise and fall regularly, so that the mixing box 1 rotates up and down around the support shaft 4, so that the accelerator can flow fully in the mixing box 1, further improving the mixing effect and ensuring the adequacy of the mixing.

[0031] When the accelerator is mixed with concrete, if the temperature is too high, the accelerator will decompose or inactivate and the concrete will dry out or lose its bonding strength before it is completely hardened, thus affecting the quality and strength of the concrete. If the temperature is too low, the accelerator will crystallize and the water molecules in the concrete will freeze, causing cracks inside the concrete, further affecting the quality and strength of the concrete, thereby affecting its reaction speed and mixing uniformity. In order to ensure the quality and strength of the shotcrete, the temperature of the accelerator must be controlled so that it is within the optimal working temperature range. Therefore, in this embodiment, a plurality of heating zones 9 are provided on the mixing box 1. The heating zones 9 are used to control the working stability of the mixing box 1 so that the working temperature of the accelerator is between 50°C and 80°C, which ensures that the accelerator can fully exert its effect and avoids problems such as concrete drying or freezing.

[0032] The present embodiment further includes a quantity control box 10, in which a partition 11 is arranged, and the partition 11 divides the quantity control box 10 into two quantity control areas. A liquid level sensor 12 is installed in each quantity control area for monitoring the liquid level height. The corresponding storage tank 13 for storing the accelerator and the clean water is connected to the corresponding quantity control area. After the accelerator and the clean water are added to the quantity control area, the liquid level sensor 12 monitors the liquid level height in the quantity control area and calculates the added amount according to the cross-sectional area of ​​the quantity control area, thereby realizing the quantity control of the accelerator and the clean water.

[0033] The liquid inlet and outlet of the control box 10 are provided with control valves for controlling the inlet and outlet of the quick-setting agent and clean water. The liquid outlet of the control box 10 is connected with the mixing box 1 through a hose, so that the liquid in the control box 10 is added into the mixing box 1 and fully mixed with the concrete.

[0034] When a shotcrete accelerator mixer disclosed in an embodiment of the present application is in use, the control valve at the liquid inlet of the control volume box 10 is opened to distribute the accelerator and clean water into the control volume area. When the liquid level sensor 12 detects that the liquid level reaches the set height, the liquid supply is stopped and the control valve of the liquid outlet is started at the same time. The accelerator and clean water enter the mixing box 1 and mix with the concrete. The output shaft of the motor 3 drives the spiral blade 2 to rotate, so that the spiral blade 2 drives the mixed soil and the accelerator to mix continuously. The output shaft of the telescopic cylinder 7 drives one end of the mixing box 1 to rise and fall regularly, so that the mixing box 1 rotates up and down around the support shaft 4, so that the accelerator can fully flow in the mixing box 1, thereby improving the mixing effect.

Claims

1. A shotcrete accelerating agent mixer, characterized in that: It comprises a mixing box (1), a telescopic cylinder (7) and a telescopic rod (8); The mixing box (1) is rotatably connected with a spiral blade (2) for mixing and stirring; A motor (3) is fixedly mounted on the mixing box (1), and an output shaft of the motor (3) is fixedly connected to the spiral blade (2); The mixing box (1) is fixedly mounted with a support shaft (4), which is rotatably connected to a fixed seat (5). A plurality of guide rails (6) are fixedly mounted on the fixed seat (5); the telescopic cylinder (7) is slidably connected to the corresponding guide rails (6); the output shaft of the telescopic cylinder (7) is rotatably connected to the mixing box (1); one end of the telescopic rod (8) is slidably connected to the corresponding guide rail (6) and the other end is rotatably connected to the mixing box (1).

2. The shotcrete accelerating agent mixer according to claim 1, characterized in that: The telescopic rod (8) and the telescopic cylinder (7) are respectively located on both sides of the support shaft (4).

3. The shotcrete accelerating agent mixer according to claim 1, characterized in that: The mixing box (1) is provided with a plurality of heating zones (9) for heating.

4. The shotcrete accelerating agent mixer according to any one of claims 1 to 3, characterized in that: It also includes a quantity control box (10), in which a partition (11) is arranged, and the partition (11) divides the quantity control box (10) into two quantity control areas, and the storage tank (13) is connected to the corresponding quantity control area.

5. The shotcrete accelerating agent mixer according to claim 4, characterized in that: A liquid level sensor (12) is installed in each volume control area to monitor the liquid level height.

Images