A double-shaft mixer for grouting liquid used for sealing mine shaft

Abstract

The utility model discloses a grouting liquid double shaft mixer for mine adit plugging, including double shaft mixer body, stirring shaft, stirring subassembly, the inside parallel arrangement of stirring box body of double shaft mixer body is two stirring shafts, and the stirring subassembly is uniformly distributed on stirring shaft, and the stirring subassembly on two stirring shafts is the asymmetric structure setting, and the two thread through -holes of spatial vertical distribution are set up on stirring shaft, and the stirring subassembly includes stirring vane, fixed thread shaft, realizes material mixing stirring more evenly, the positioning pin axle is inserted in the positioning hole by the elastic force of limit spring, keeps the positioning pin axle always inserted in the inside of positioning hole, for keeping the sealing installation of positioning pin axle and limit spring, prevents entering grouting material, adopts and sets up sealing cap to the one side of positioning pin axle to the sealing installation of positioning pin axle and limit spring, realizes the thread installation seal of sealing cap and thread layer no.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mixer technical field, concretely relates to a grouting liquid double-shaft mixer for mine sealing. BACKGROUND

[0002] Mine sealing refers to the closed treatment of abandoned mines or mines to prevent them from continuing to gush water, collapse or be illegally mined, thereby protecting the environment and safety. The present patent scheme uses a horizontal mixer to mix the filling material for mine sealing treatment. The horizontal mixer can fully mix the material and improve the uniformity of the mixture. The novel rotor structure can adjust the minimum gap between the rotor and the bright body to nearly zero, effectively reducing the amount of residual material. It can also crush larger materials to achieve uniform and firm sealing of the grouting material.

[0003] However, the current horizontal mixer has a faster wear rate, especially the mixing blades that are in contact with the material the most. The existing technology mostly uses fixed installation, such as welding. For example, the publication (announcement) number CN215311568U discloses a horizontal double-shaft mixer (as shown in Figure 4 The mixing shaft blade is fixedly installed using a push ball structure. The mixing blades in the above existing equipment are not easy to install quickly after wear, which needs to be improved in terms of equipment use efficiency.

[0004] Therefore, it is necessary to provide a grouting liquid double-shaft mixer for mine sealing. UTILITY MODEL CONTENTS

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides a grouting liquid double-shaft mixer for mine sealing, which can quickly replace and install the mixing shaft blade and keep the stable and fixed installation of the mixing shaft blade.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a twin-shaft mixer for grouting fluid used in mine shaft sealing, comprising a twin-shaft mixer body, mixing shafts, and mixing components. Two mixing shafts are arranged parallel to each other inside the mixing chamber of the twin-shaft mixer body. Mixing components are evenly distributed on the mixing shafts, and the mixing components on the two mixing shafts are arranged in an asymmetrical structure. Two rows of threaded through holes are opened on the mixing shafts, arranged vertically in space. Each mixing component includes mixing blades and a fixed threaded shaft. A reinforcing screw is coaxially mounted at the bottom end of the threaded through hole. A positioning pin is set on one side of the reinforcing screw. The top end of the fixed threaded shaft is set with mixing blades. The bottom end of the fixed threaded shaft is threaded into the threaded through hole, and an extension thread is installed inside the reinforcing screw. A positioning hole is opened at the bottom end of the fixed threaded shaft. The positioning pin is pushed into the positioning hole by the elastic force of a limiting spring to position and fix the threaded shaft to prevent loosening. A sealing cap is set on one side of the positioning pin to seal the positioning pin and the limiting spring.

[0007] Preferably, one side of the reinforcing screw cylinder is connected to a fixed cylinder, the axis of the fixed cylinder is perpendicular to the axis of the reinforcing screw cylinder, the outside of the fixed cylinder is provided with a threaded layer, the bottom end of the limiting spring is fixedly connected inside the fixed cylinder, the positioning pin is sleeved and installed inside the fixed cylinder, the top end of the limiting spring is fixedly connected to the positioning pin, the positioning pin passes through the fixed cylinder and extends into the inside of the reinforcing screw cylinder and is inserted into the positioning hole to limit and fix the threaded shaft to prevent loosening.

[0008] Preferably, the top of the positioning pin is configured as a handle, which abuts against the end face of the fixing cylinder to limit the depth of the positioning pin inserted into the positioning hole and maintain the threaded fixing of the fixing thread shaft to prevent loosening.

[0009] Preferably, a sealing cap is installed on the external thread of the first thread layer, and a nut is provided on the sealing cap and coaxially arranged. The sealing cap is fixedly installed with the first thread layer to limit the installation of the positioning pin and keep it continuously inserted in the positioning hole.

[0010] Preferably, a sealing groove is formed on the surface of the fixed cylinder at one end of the threaded layer, and a sealing ring is set inside the sealing groove. The sealing ring is sealed between the sealing cap and the fixed cylinder.

[0011] In summary, this utility model provides a twin-shaft mixer for grouting fluid used in mine shaft sealing. This utility model patent employs two parallel mixing shafts inside the mixing chamber. Each mixing shaft has two rows of threaded through holes, with the axes of the two threaded through holes being spatially perpendicular. The mixing components evenly distributed on the two mixing shafts are asymmetrically arranged to achieve more uniform material mixing. The positioning pin is pushed into the positioning hole by the elastic force of a limiting spring, keeping the positioning pin always inserted inside the positioning hole. To maintain a sealed installation between the positioning pin and the limiting spring and prevent grouting material from entering, a sealing cap is provided on one side of the positioning pin to seal the positioning pin and the limiting spring.

[0012] A limiting spring is fixedly installed between the positioning pin and the first fixed cylinder. This allows the positioning pin to be inserted into the reinforcing cylinder through the elastic action of the limiting spring, thus securing the threaded installation of the positioning pin and preventing loosening. The positioning pin passes through the first fixed cylinder and is inserted into the positioning hole. The elastic thrust of the limiting spring keeps the positioning pin inserted in the positioning hole, preventing loosening of the threaded installation and ensuring the fixed use of the stirring blades during mixing. A sealing ring is installed between the sealing cap and the first fixed cylinder, sealing the threaded installation of the sealing cap and the first threaded layer, ensuring a sealed installation of the positioning pin and the limiting spring. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional schematic diagram of the stirring assembly, positioning pin, and limiting spring structure of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the sealing cap and fixing cylinder of this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of a dual-shaft mixer with an existing patent.

[0017] In the diagram: 1. Twin-shaft mixer body; 2. Mixing shaft; 3. Mixing assembly; 4. Threaded through hole; 5. Mixing blade; 6. Fixed threaded shaft; 7. Reinforcing screw barrel; 11. Positioning pin; 12. Positioning hole; 13. Limiting spring; 14. Sealing cap; 15. Fixed cylinder one; 16. Threaded layer one; 17. Handle; 21. Nut; 22. Sealing groove; 23. Sealing ring; 31. Drive unit; 32. Gearbox; 33. Mixing box body; 34. Discharge port. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figures 1 to 3As shown:

[0020] This utility model relates to a twin-shaft mixer for grouting fluid used in mine shaft sealing. It includes a twin-shaft mixer body 1, mixing shafts 2, and mixing components 3. The mixing chamber of the twin-shaft mixer body 1 contains two parallel mixing shafts 2. Mixing components 3 are evenly distributed on the mixing shafts 2, and the mixing components 3 on the two mixing shafts 2 are asymmetrically arranged. Two rows of threaded through holes 4 are spatially vertically distributed on the mixing shafts 2. Each mixing component 3 includes mixing blades 5 and a fixed threaded shaft 6. A reinforcing screw 7, coaxial with the threaded through hole 4, is provided at the bottom end of the threaded through hole 4. One side of the fixed screw barrel 7 is provided with a positioning pin 11, the top of the fixed threaded shaft 6 is provided with a stirring blade 5, the bottom end of the fixed threaded shaft 6 is threadedly installed inside the threaded through hole 4, and the extension thread is installed inside the reinforced screw barrel 7. The bottom end of the fixed threaded shaft 6 is provided with a positioning hole 12. The positioning pin 11 is pushed into the positioning hole 12 by the elastic force of the limiting spring 13 to position and install the fixed threaded shaft 6 to prevent loosening. One side of the positioning pin 11 is provided with a sealing cap 14 to seal the positioning pin 11 and the limiting spring 13.

[0021] To solve the problem of quickly installing and replacing the mixing blades of existing horizontal mixers and improve the efficiency of the equipment, the technical approach adopted by this utility model patent is as follows: The body 1 of the twin-shaft mixer is composed of a drive unit 31, a gearbox 32, and a mixing box 33. The mixing box 33 has a discharge port 34 on one side in the direction of the mixing blades 5. The interior of the mixing box 33 is equipped with two parallel mixing shafts 2. The mixing shafts 2 have two rows of threaded through holes 4, and the axes of the two threaded through holes 4 are set to be spatially perpendicular. The mixing components 3 evenly distributed on the two mixing shafts 2 are asymmetrically arranged to achieve more uniform mixing of materials.

[0022] A reinforcing screw cylinder 7, coaxial with the threaded through hole 4, is provided at the bottom end of the threaded through hole 4. The fixed threaded shaft 6 enters from the top of the threaded through hole 4 and is threaded into the threaded through hole 4, extending into the interior of the reinforcing screw cylinder 7 and being threaded into the reinforcing screw cylinder 7. To prevent the fixed threaded shaft 6 from loosening during the mixing process, a positioning hole 12 is opened inside the fixed threaded shaft 6. A positioning pin 11 is inserted into the positioning hole 12 to limit the fixed installation of the threaded shaft 6. The positioning pin 11 is pushed into the positioning hole 12 by the elastic force of the limiting spring 13, keeping the positioning pin 11 always inserted inside the positioning hole 12. To maintain the sealed installation of the positioning pin 11 and the limiting spring 13 and prevent the grouting material from entering, a sealing cap 14 is provided on one side of the positioning pin 11 to seal the positioning pin 11 and the limiting spring 13.

[0023] In at least one embodiment, the specific structure for the sealing installation of the positioning pin 11 and the limiting spring 13 is as follows: one side of the reinforcing screw cylinder 7 is connected to a fixed cylinder 15, the axis of the fixed cylinder 15 is perpendicular to the axis of the reinforcing screw cylinder 7, a threaded layer 16 is provided on the outside of the fixed cylinder 15, the bottom end of the limiting spring 13 is fixedly connected inside the fixed cylinder 15, the positioning pin 11 is sleeved and installed inside the fixed cylinder 15, the top end of the limiting spring 13 is fixedly connected to the positioning pin 11, and the positioning pin 11 extends through the fixed cylinder 15 to the inside of the reinforcing screw cylinder 7 and is inserted into the positioning hole 12 to limit and fix the threaded shaft 6 to prevent loosening.

[0024] Specifically, the positioning pin 11 is installed inside the limiting spring 13. The positioning pin 11 can extend through the fixed cylinder 15 to the inside of the reinforcing screw cylinder 7. The limiting spring 13 is fixedly installed between the positioning pin 11 and the fixed cylinder 15 so that the positioning pin 11 can be inserted into the inside of the reinforcing screw cylinder 7 through the elastic action of the limiting spring 13, so as to install the positioning hole 12 and limit the thread installation of the threaded shaft 6 to prevent loosening.

[0025] In at least one embodiment, to facilitate the easy pulling and inserting of the positioning pin 11 into the positioning hole 12, a handle 17 is provided at the top of the positioning pin 11. The handle 17 abuts against the end face of the fixing cylinder 15 to limit the depth of the positioning pin 11 inserted into the positioning hole 12, thus maintaining the threaded fixation of the fixed threaded shaft 6. When the fixed threaded shaft 6 is threadedly installed in the reinforcing screw cylinder 7, the handle 17 is pulled to compress the limiting spring 13. When the handle 17 is released, the positioning pin 11 passes through the fixing cylinder 15 and is inserted into the positioning hole 12. The elastic thrust of the limiting spring 13 keeps the positioning pin 11 inserted into the positioning hole 12, thus achieving the threaded installation of the fixed threaded shaft 6 and ensuring the fixed use of the stirring blade 5 during the mixing process.

[0026] In at least one embodiment, to achieve a sealing structure for the positioning pin 11 and the limiting spring 13, a sealing cap 14 is installed on the external thread of the threaded layer 16. A nut 21 is provided on the sealing cap 14 and is coaxially arranged. By installing the nut 21, the sealing cap 14 is threadedly fixed to the threaded layer 16. The end of the sealing cap 14 is in contact with the handle 17, so that the handle 17 is limited between the sealing cap 14 and the end face of the fixed cylinder 15, and the positioning pin 11 is kept inserted in the positioning hole 12, ensuring the anti-loosening threaded installation of the fixed threaded shaft 6.

[0027] In at least one embodiment, to ensure the sealed installation of the sealing cap 14 and the threaded layer 16, and to seal the positioning pin 11 and the limiting spring 13 to prevent contact with the grouting material, a sealing groove 22 is formed on the surface of the fixed cylinder 15 at the end of the threaded layer 16. The inside of the sealing groove 22 is set as a sealing ring 23. The sealing ring 23 is sealed between the sealing cap 14 and the fixed cylinder 15, thereby achieving a threaded installation seal between the sealing cap 14 and the threaded layer 16, and ensuring the sealed installation of the positioning pin 11 and the limiting spring 13.

[0028] The embodiments described in this utility model are for illustrative purposes only and do not constitute a limitation on the scope of the claims. Other substantially equivalent substitutions that can be conceived by those skilled in the art are all within the protection scope of this utility model.

Claims

1. A twin-shaft mixer for grouting fluid used in mine shaft sealing, characterized in that, The mixer includes a twin-shaft mixer body (1), a mixing shaft (2), and a mixing assembly (3). The mixing chamber of the twin-shaft mixer body (1) has two parallel mixing shafts (2). The mixing assemblies (3) are evenly distributed on the mixing shafts (2), and the mixing assemblies (3) on the two mixing shafts (2) are asymmetrically arranged. Two rows of threaded through holes (4) are opened on the mixing shafts (2) in a spatially vertically distributed manner. The mixing assembly (3) includes a mixing blade (5) and a fixed threaded shaft (6). A reinforcing screw (7) is provided at the bottom end of the threaded through hole (4) and is coaxial with it. One side of the reinforcing screw (7) is set as a fixed screw. Positioning pin (11), the top end of the fixed threaded shaft (6) is set as stirring blade (5), the bottom end of the fixed threaded shaft (6) is threaded inside the threaded through hole (4) and the extension thread is installed inside the reinforcing screw barrel (7). The bottom end of the fixed threaded shaft (6) is provided with positioning hole (12). The positioning pin (11) is pushed into the positioning hole (12) by the elastic force of the limiting spring (13) to position and install the fixed threaded shaft (6) to prevent loosening. One side of the positioning pin (11) is set as sealing cap (14) to seal the positioning pin (11) and the limiting spring (13).

2. The twin-shaft mixer for grouting fluid used in mine shaft sealing according to claim 1, characterized in that, One side of the reinforcing screw cylinder (7) is connected to a fixed cylinder (15). The axis of the fixed cylinder (15) is perpendicular to the axis of the reinforcing screw cylinder (7). The outside of the fixed cylinder (15) is provided with a threaded layer (16). The bottom end of the limiting spring (13) is fixedly connected inside the fixed cylinder (15). The positioning pin (11) is sleeved and installed inside the fixed cylinder (15). The top end of the limiting spring (13) is fixedly connected to the positioning pin (11). The positioning pin (11) passes through the fixed cylinder (15) and extends into the inside of the reinforcing screw cylinder (7) and is inserted into the positioning hole (12) to limit and fix the threaded shaft (6) to prevent loosening.

3. A twin-shaft mixer for grouting fluid used in mine shaft sealing according to claim 2, characterized in that, The top of the positioning pin (11) is set as a handle (17). The handle (17) abuts against the end face of the fixed cylinder (15) to limit the depth of the positioning pin (11) inserted into the positioning hole (12) and keep the thread of the fixed threaded shaft (6) locked.

4. A twin-shaft mixer for grouting fluid used in mine shaft sealing according to claim 2, characterized in that, A sealing cap (14) is installed on the external thread of the threaded layer (16). A nut (21) is provided on the sealing cap (14) and is coaxially arranged. The sealing cap (14) is fixedly installed with the threaded layer (16) to limit the installation of the positioning pin (11) and keep it continuously inserted in the positioning hole (12).

5. A twin-shaft mixer for grouting fluid used in mine shaft sealing according to claim 4, characterized in that, A sealing groove (22) is opened on the surface of the fixed cylinder (15) at the end of the thread layer (16). The inside of the sealing groove (22) is set as a sealing ring (23). The sealing ring (23) is installed between the sealing cap (14) and the fixed cylinder (15).

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