Coal mine underground grouting material mixer

Abstract

The invention provides a coal mine underground grouting material mixer. The coal mine underground grouting material mixer comprises a mixing barrel, a positioning pipe and a sealing pipe. An air inlet pipe is arranged on the side wall of the mixing barrel; the positioning pipe is connected into the air inlet pipe; the sealing pipe is sleeved outside the positioning pipe, a spring is compressed between the sealing pipe and the positioning pipe, the sealing pipe comprises a shaft pipe, the shaft pipe is arranged in the positioning pipe in a penetrating manner, the end part of the shaft pipe is provided with a shaft head, the side wall of the shaft pipe is provided with an air outlet hole, and the spring can enable the sealing pipe to generate a movement trend far away from the positioning pipe, so that the positioning pipe is sealed by the shaft head. Pressure gas pushes the shaft pipe to move, so that the gas inlet pipe is communicated with the mixing cylinder through the gas outlet hole, and the vortex force formed when the pressure gas enters the mixing cylinder is beneficial to promoting sufficient mixing of slurry.

Description

Technical Field

[0001] The present application relates to the field of mining engineering technology, and in particular to a slurry mixer for underground coal mines. Background Art

[0002] In order to ensure the support quality of mine tunnels and improve the service life of tunnels, tunnels need to be regularly inspected and maintained. During the inspection and maintenance work, two-component gelling grouting materials usually need to be mixed. Existing mixing equipment does not mix the grouting material sufficiently, which makes the grouting material easy to precipitate and solidify, affecting the grouting efficiency. To this end, the inventor proposed a coal mine underground grouting material mixer. Summary of the invention

[0003] The present application provides a coal mine underground injection slurry mixer to solve the problem of insufficient slurry mixing.

[0004] The technical solution of this application is as follows: The present application provides a coal mine underground slurry mixer, which comprises: a mixing cylinder, a positioning tube and a closing tube; An air inlet pipe is provided on the side wall of the mixing cylinder; The positioning tube is connected to the inside of the air intake pipe; The closing tube is sleeved on the outside of the positioning tube, and a spring is compressed between the closing tube and the positioning tube. The closing tube includes an axis tube, which is passed through the inside of the positioning tube, and an axis head is provided at the end of the axis tube. An air outlet is provided on the side wall of the axis tube. The spring can make the closing tube move away from the positioning tube so that the axis head can close the positioning tube.

[0005] By adopting the technical solution of the present application, the pressurized gas pushes the shaft tube to move, so that the air inlet pipe is connected to the mixing cylinder through the air outlet hole. The vortex force formed by the pressurized gas entering the mixing cylinder is conducive to promoting sufficient mixing of the slurry.

[0006] In some implementations, the axis of the air inlet pipe is perpendicular to the axis of the mixing cylinder.

[0007] In some implementations, the positioning tube is coaxially arranged with the air inlet tube.

[0008] In some implementations, the positioning tube is threadedly connected to the air intake tube.

[0009] In some implementations, a connection ring that is screwed onto the air inlet pipe is disposed on the outside of the positioning tube.

[0010] In some implementations, the spring is compressed between the connecting ring and the closure tube.

[0011] In some implementations, a mounting groove for accommodating the shaft head is provided inside the positioning tube.

[0012] In some implementations, the shaft tube maintains a coaxial arrangement with the closure tube.

[0013] In some implementations, the outer diameter of the shaft tube is equal to the inner diameter of the positioning tube.

[0014] In some implementations, the air outlet holes are evenly distributed along the circumference of the shaft tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments described below are only used to explain the present application, rather than to limit the scope of the present application. In the accompanying drawings: Figure 1 is a schematic diagram of a slurry mixer for underground coal mine according to an embodiment of the present application; Figure 2 is a cross-sectional view of a slurry mixer for underground coal mine according to an embodiment of the present application; Figure 3 is a schematic diagram of an air intake pipe, a positioning pipe and a sealing pipe according to an embodiment of the present application; Reference numerals: 10. Mixing cylinder; 11. Slurry inlet; 12. Slurry outlet; 20. Intake pipe; 30. Positioning tube; 31. Connecting ring; 32. Mounting groove; 33. Spring; 40. Closing tube; 41. Shaft tube; 42. Shaft head; 43. Air outlet. DETAILED DESCRIPTION

[0016] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0017] In the related technology, in order to ensure the support quality of mine tunnels and improve the service life of tunnels, tunnels need to be regularly inspected and maintained. During the inspection and maintenance work, two-component gelling grouting materials usually need to be mixed. The existing mixing equipment does not mix the grouting materials sufficiently, which makes the grouting materials easy to precipitate and solidify, affecting the grouting efficiency.

[0018] The present embodiment provides a coal mine underground slurry mixer, which is used for mixing two-component gelling grouting materials to solve the problem of insufficient slurry mixing.

[0019] See also Figure 1-Figure 3In the present embodiment, a coal mine underground slurry mixer includes a mixing barrel 10, an air inlet pipe 20, a positioning pipe 30 and a closing pipe 40; wherein, the side wall of the mixing barrel 10 is provided with an air inlet pipe 20; the positioning pipe 30 is connected to the inside of the air inlet pipe 20; the closing pipe 40 is sleeved on the outside of the positioning pipe 30, and a spring 33 is compressed between the closing pipe 40 and the positioning pipe 30, and the closing pipe 40 includes a shaft tube 41, which is passed through the inside of the positioning pipe 30, and a shaft head 42 is provided at the end of the shaft tube 41, and an air outlet 43 is provided on the side wall of the shaft tube 41, and the spring 33 can make the closing pipe 40 have a movement tendency away from the positioning pipe 30, so that the shaft head 42 closes the positioning pipe 30.

[0020] By adopting the technical solution of this embodiment, the pressurized gas pushes the shaft tube 41 to move, so that the air inlet pipe 20 is connected to the mixing barrel 10 through the air outlet 43. The vortex force formed by the pressurized gas entering the mixing barrel 10 is conducive to promoting the full mixing of the slurry.

[0021] In the present embodiment, the mixing drum 10 is constructed as a whole into a hollow cylindrical shape. A slurry inlet 11 is provided at one end of the mixing drum 10, and a slurry outlet 12 is provided at the other end. As an example, the slurry inlet 11 and the slurry outlet 12 are both arranged at the axis of the mixing drum 10. The air inlet pipe 20 is connected to the side wall of the mixing drum 10, and the axis of the air inlet pipe 20 is arranged vertically to the axis of the mixing drum 10. The pressurized gas flows into the interior of the mixing drum 10 through the air inlet pipe 20, which can mix and stir the two-component cementitious grouting material inside the mixing drum 10, and can promote the full mixing of the two-component cementitious grouting material.

[0022] In this embodiment, the positioning tube 30 is constructed as a whole into a circular tube shape with both ends open. The positioning tube 30 is arranged inside the air intake pipe 20 and maintains a coaxial arrangement with the air intake pipe 20. A connecting ring 31 is fixedly connected to the end of the positioning tube 30 close to the mixing barrel 10. The outer diameter of the connecting ring 31 is larger than the outer diameter of the positioning tube 30. The outer wall of the connecting ring 31 forms a threaded connection with the inner wall of the air intake pipe 20. At the same time, a circular mounting groove 32 is also provided inside the positioning tube 30. The mounting groove 32 is arranged at one end where the connecting ring 31 is provided. The outer diameter of the mounting groove 32 is larger than the inner diameter of the positioning tube 30, and a spring 33 is sleeved on the outside of the positioning tube 30.

[0023] In this embodiment, the closing tube 40 is integrally sleeved on the outside of the positioning tube 30, the outer diameter of the closing tube 40 is equal to the inner diameter of the intake pipe 20, the inner diameter of the closing tube 40 is equal to the outer diameter of the positioning tube 30, the spring 33 is compressed between the connecting ring 31 and the end face of the closing tube 40, and a shaft tube 41 is provided at the axis of the closing tube 40, the shaft tube 41 is integrally penetrated into the interior of the positioning tube 30, and the outer diameter of the shaft tube 41 is equal to the inner diameter of the positioning tube 30, the right end of the shaft tube 41 is closed and connected with the right end of the closing tube 40, and a conical shaft head 42 is provided at the left end portion of the shaft tube 41, the right end face of the shaft head 42 abuts against the bottom of the mounting groove 32, the shaft head 42 can prevent the closing tube 40 from being separated from the positioning tube 30, the air outlet holes 43 are evenly distributed along the circumference of the shaft tube 41, and the air outlet holes 43 are arranged near the right end face of the shaft head 42.

[0024] It should be noted that the spring 33 in a compressed state produces a rightward pushing force on the closed tube 40, causing the closed tube 40 to have a movement tendency to move to the right, so that the right end face of the shaft head 42 is pressed against the bottom of the mounting groove 32, and the air outlet 43 moves into the interior of the positioning tube 30. At this time, the air inlet pipe 20 is in a closed state; when the pressurized gas flows into the air inlet pipe 20 from the right, the pressurized gas will push the closed tube 40 to move to the left as a whole, and the spring 33 is further compressed, and the air outlet 43 moves out from the interior of the positioning tube 30. The air outlet 43 connects the air inlet pipe 20 and the mixing barrel 10, and the pressurized gas enters the interior of the mixing barrel 10 through the air outlet 43.

[0025] It should be understood that, in this embodiment, the automatic sealing of the air intake pipe 20 is achieved through the coordinated cooperation of the positioning pipe 30 and the sealing pipe 40 .

[0026] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A coal mine slurry mixer, characterized in that: include: A mixing cylinder, wherein the side wall of the mixing cylinder is provided with an air inlet pipe; A positioning pipe connected to the inside of the air intake pipe; A closing tube, wherein the closing tube is sleeved on the outside of the positioning tube, a spring is compressed between the closing tube and the positioning tube, the closing tube comprises an axis tube, the axis tube is passed through the inside of the positioning tube, an axis head is provided at the end of the axis tube, and an air outlet is provided on the side wall of the axis tube, the spring can make the closing tube have a movement tendency away from the positioning tube so that the axis head closes the positioning tube.

2. The coal mine underground slurry mixer according to claim 1, characterized in that: The axis of the air inlet pipe is arranged perpendicularly to the axis of the mixing cylinder.

3. The coal mine underground slurry mixer according to claim 2, characterized in that: The positioning pipe is coaxially arranged with the air intake pipe.

4. The coal mine underground slurry mixer according to claim 3, characterized in that: The positioning pipe is threadedly connected to the air intake pipe.

5. The coal mine slurry mixer according to claim 4, characterized in that: The exterior of the positioning tube is provided with a connecting ring which is screwed with the air inlet pipe.

6. The coal mine underground slurry mixer according to claim 5, characterized in that: The spring is compressed between the connecting ring and the closing tube.

7. The coal mine slurry mixer according to claim 6, characterized in that: A mounting groove for accommodating the shaft head is provided inside the positioning tube.

8. The coal mine underground slurry mixer according to claim 7, characterized in that: The shaft tube and the closing tube are coaxially arranged.

9. The coal mine underground slurry mixer according to claim 8, characterized in that: The outer diameter of the shaft tube is equal to the inner diameter of the positioning tube.

10. The coal mine underground slurry mixer according to claim 9, characterized in that: The air outlet holes are evenly distributed along the circumference of the shaft tube.

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