Fireproof grouting conveying device for coal mine goaf

Abstract

The utility model discloses a coal mine goaf fireproof grouting conveying device, and relates to the technical field of mining equipment. The device comprises a delivery pump, wherein one side of the delivery pump is communicated with a delivery pipe; a vibration assembly is arranged on the surface of the conveying pipe and comprises a fixing shell arranged on the surface of the conveying pipe in a sleeving mode and a driving shell installed in the fixing shell. According to the driving assembly, water flow in the water tank is pressurized through the pressurizing pump and then injected into the driving shell, turbine blades are pushed to rotate, then the rotating shaft and the cam are driven to rotate, the cam periodically pushes the push plate and the knocking block, the conveying pipe generates regular vibration, the deposition state of sand in slurry is destroyed, and the fluidity of the sand is enhanced; according to the design, the problem of pipeline blockage caused by slurry precipitation of a traditional device is solved, the grouting conveying efficiency is remarkably improved, meanwhile, the shutdown cleaning frequency caused by blockage is reduced, and continuity and stability of goaf fireproof grouting operation are guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of mining equipment technology, and in particular relates to a fireproof grouting conveying device for coal mine goaf areas. Background Art

[0002] Fire-prevention grouting in coal mine goafs is a key technology for preventing spontaneous combustion of coal. A grout, made from materials such as loess and fly ash, is prepared at a ground-based grouting station and then transported to the goaf via pipelines or boreholes to cover residual coal and isolate it from oxygen. The system employs two- or multi-stage pump pressurization, combined with intermittent or continuous conveying processes to ensure uniform grout diffusion. Modern technology incorporates automated monitoring and frequency conversion control to optimize grouting parameters and improve filling rates. This process combines fire prevention, cooling, and roof consolidation, making it a crucial guarantee for safe coal mine production.

[0003] Most current coal mine goaf fire prevention grouting conveying devices transport pumped mixed grout to the goaf by laying pipelines. However, the grout contains a large amount of sand and gravel, which will settle inside the pipeline during the transportation process. As the transportation time increases, it will gradually accumulate and cause blockage, which will affect the transportation efficiency of the grout. To address this issue, we provide a coal mine goaf fire prevention grouting conveying device to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a coal mine goaf fire prevention grouting conveying device. Through the cooperation of the vibration component and the drive component, it solves the problem that sedimentation easily occurs inside the pipeline when conveying grout in the existing coal mine goaf fire prevention grouting conveying device.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0006] This utility model relates to a fireproof grouting conveying device for coal mine goaf areas, comprising a conveying pump, one side of which is connected to a conveying pipe; a vibration assembly is provided on the surface of the conveying pipe, the vibration assembly comprising a fixed shell sleeved on the surface of the conveying pipe, a drive shell installed inside the fixed shell, a rotating shaft movably connected inside the drive shell, a cam installed on the surface of the rotating shaft, a push plate slidably connected to one side of the cam, and a striking block fixedly connected to one side of the push plate; a drive assembly is provided on one side of the conveying pipe, the drive assembly comprising a booster pump located on one side of the conveying pump, a water tank connected to the bottom inlet of the booster pump, and turbine blades located inside the drive shell.

[0007] The present invention is further configured such that the drive assembly includes a water inlet pipe connected to the top of the drive housing and a drain pipe connected to the bottom of the drive housing, one end of the water inlet pipe and the drain pipe are connected to a connecting pipe, and the other end of the connecting pipe is connected to a water tank and a pressure pump respectively.

[0008] The present invention is further configured such that one end of the rotating shaft is fixedly connected to the turbine blade, and the surface of the rotating shaft is movably connected to the inner wall of the drive housing through a bearing.

[0009] The present invention is further configured such that a support rod is slidably connected inside the push plate, and a spring is sleeved on the surface of the support rod.

[0010] The present invention is further configured such that a support shaft is installed at the bottom of the fixed shell, an mounting shell is movably connected to the surface of the support shaft, and a snap-fit ​​plate is fixedly connected to the top of both the fixed shell and the mounting shell.

[0011] The present invention is further configured such that a fixing plate is sleeved on the surface of the snap-fit ​​plate, and a fixing bolt is threadedly connected to the top of the fixing plate.

[0012] The present invention is further configured such that the other end of the rotating shaft is movably connected to the inner wall of the fixed shell, and a through groove is provided inside the fixed shell.

[0013] The present invention has the following beneficial effects.

[0014] 1. The drive assembly of this utility model uses a pressure pump to pressurize the water flow in the water tank and inject it into the drive housing, which drives the turbine blades to rotate, thereby driving the rotating shaft and cam to rotate. The cam periodically pushes the push plate and the striking block, causing the delivery pipe to vibrate regularly, thereby breaking the sedimentation state of sand and gravel in the slurry and enhancing its fluidity. This design avoids the pipe blockage problem caused by slurry sedimentation in traditional devices, significantly improves the grouting delivery efficiency, and reduces the frequency of downtime for cleaning caused by blockage, ensuring the continuity and stability of fire prevention grouting operations in goaf areas.

[0015] 2. The vibration assembly of this utility model adopts a modular design, enabling quick assembly and disassembly and flexible expansion through a fixed shell, mounting shell, and snap-fit ​​plate structure. The movable connection between the support shaft and the mounting shell, combined with the fastening method of the fixing bolts, allows the vibration assembly to be easily installed at any position on the delivery pipe. Furthermore, the through-slot structure ensures that the striking blocks accurately act on the pipe wall, and the reset mechanism of the spring and support rod further optimizes the vibration effect and extends the component's lifespan. This structure not only facilitates adjustment of the vibration point density according to the pipe length but is also suitable for long-distance grouting delivery scenarios in complex terrain.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1This is a perspective view of a fire-prevention grouting conveying device for coal mine goaf areas.

[0019] Figure 2 This is a cross-sectional view of the fixed shell in a fire-prevention grouting conveying device for coal mine goaf areas.

[0020] Figure 3 This is a schematic diagram of the connection between the clamping plate and the fixing plate in a fireproof grouting conveying device for coal mine goaf areas.

[0021] Figure 4 This is a cross-sectional view of the drive housing in a fire-prevention grouting conveying device for coal mine goaf areas.

[0022] Figure 5 This is a schematic diagram of the connection between a cam and a pusher plate in a fireproof grouting conveying device for coal mine goaf areas.

[0023] In the attached diagram: 1. Delivery pump; 2. Delivery pipe; 3. Vibration assembly; 301. Fixed housing; 302. Drive housing; 303. Rotating shaft; 304. Cam; 305. Push plate; 306. Striking block; 4. Drive assembly; 401. Pressure pump; 402. Water tank; 403. Turbine blade; 404. Inlet pipe; 405. Drain pipe; 406. Connecting pipe; 5. Support rod; 6. Spring; 7. Support shaft; 8. Mounting housing; 9. Clip plate; 10. Fixing plate; 11. Fixing bolt. DETAILED DESCRIPTION

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figures 1-5This utility model relates to a fireproof grouting conveying device for coal mine goaf areas, comprising a conveying pump 1, with a conveying pipe 2 connected to one side of the conveying pump 1; the conveying pump 1 is used to connect to external mixing equipment, which mixes the slurry, and the conveying pump 1 conveys the mixed slurry; the conveying pipe 2 is a laid pipe, the length of which is extended according to actual construction; a vibration component 3 is provided on the surface of the conveying pipe 2, the vibration component 3 including a fixed shell 301 sleeved on the surface of the conveying pipe 2, a drive shell 302 installed inside the fixed shell 301, a rotating shaft 303 movably connected inside the drive shell 302, a cam 304 installed on the surface of the rotating shaft 303, and a push plate 305 slidably connected to one side of the cam 304. One side of the cam 304 contacts the push plate 305. When the cam 304 rotates, it can push the push plate 305 to move. The through groove opened inside the fixed housing 301 is designed to pass through, so that the outer surface of the conveying pipe 2 is aligned with the striking block 306. The striking block 306 is fixedly connected to one side of the push plate 305. A drive assembly 4 is provided on one side of the conveying pipe 2. The drive assembly 4 includes a pressure pump 401 provided on one side of the conveying pump 1, a water tank 402 connected to the bottom inlet of the pressure pump 401, and a turbine blade 403 provided inside the drive housing 302. The pressure pump 401 is used to draw water from the water tank 402, pressurize it and inject it into the drive housing 302, and use the water flow to drive the turbine blade 403 to rotate.

[0027] Example 2

[0028] Please see Figures 1-5Based on Embodiment 1, the drive assembly 4 further includes a water inlet pipe 404 connected to the top of the drive housing 302 and a drain pipe 405 connected to the bottom of the drive housing 302. One end of both the water inlet pipe 404 and the drain pipe 405 is connected to a connecting pipe 406. The water inlet pipe 404, the drain pipe 405, and the connecting pipe 406 are connected by a snap-fit ​​connection. During actual construction, a set of vibration components 3 is added to the surface of the conveying pipe 2 at intervals to prevent sedimentation vibration in the pipe. The snap-fit ​​connection of the water inlet pipe 404, the drain pipe 405, and the connecting pipe 406 connects the added vibration components 3, maintaining water flow. The other end of the connecting pipe 406 is connected to the water tank 402 and the booster pump 401, respectively. One end of the rotating shaft 303 is fixedly connected to the turbine blade 403. The rotating shaft 303 is movably connected to the inner wall of the drive housing 302 via a bearing. A support rod 5 is slidably connected inside the push plate 305. A spring 6 is sleeved on the surface of the support rod 5. The spring 6 has the function of compression and energy storage, which can reset the push plate 305. A support shaft 7 is installed at the bottom of the fixed housing 301. An installation housing 8 is movably connected to the surface of the support shaft 7. A snap-fit ​​plate 9 is fixedly connected to the top of both the fixed housing 301 and the installation housing 8. A fixing plate 10 is sleeved on the surface of the snap-fit ​​plate 9. The fixing plate 10 is used to snap the two sets of snap-fit ​​plates 9 to fix the fixed housing 301 and the installation housing 8. A fixing bolt 11 is threadedly connected to the top of the fixing plate 10. The other end of the rotating shaft 303 is movably connected to the inner wall of the fixed housing 301. A through groove is opened inside the fixed housing 301.

[0029] The working principle of this utility model is as follows: During the actual construction process, a set of fixed shells 301 and mounting shells 8 are added to the surface of the conveying pipe 2 at intervals to prevent sedimentation and vibration of the pipe. The snap-fit ​​function of the water inlet pipe 404, the drain pipe 405 and the connecting pipe 406 can connect the added vibration components 3 and keep the water path connected.

[0030] When the conveying pump 1 is started and the conveying pipe 2 is used to convey the slurry, the pressurizing pump 401 can be started simultaneously. The pressurizing pump 401 draws water from the water tank 402, pressurizes it and injects it into the connecting pipe 406, and then injects it into the drive housing 302 through the water inlet pipe 404. The high-pressure water flow entering the drive housing 302 can drive the turbine blades 403 to rotate. The turbine blades 403, together with the rotating shaft 303, drive the cam 304 to rotate. The cam 304 pushes the push plate 305 and the striking block 306 to move. The striking block 306 strikes the conveying pipe 2 to generate vibration, which increases the fluidity of the sand and gravel deposited in the conveying pipe 2, avoids the sedimentation of the slurry during the conveying process and improves the conveying efficiency.

[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 coal mine goaf fireproof grouting conveying device, comprising a conveying pump (1), characterized in that: The delivery pump (1) is connected to a delivery pipe (2) on one side; The surface of the conveying pipe (2) is provided with a vibration assembly (3). The vibration assembly (3) includes a fixed shell (301) sleeved on the surface of the conveying pipe (2), a drive shell (302) installed inside the fixed shell (301), a rotating shaft (303) movably connected inside the drive shell (302), a cam (304) installed on the surface of the rotating shaft (303), a push plate (305) slidably connected to one side of the cam (304), and a striking block (306) fixedly connected to one side of the push plate (305). A drive assembly (4) is provided on one side of the delivery pipe (2). The drive assembly (4) includes a booster pump (401) provided on one side of the delivery pump (1), a water tank (402) connected to the bottom inlet of the booster pump (401), and a turbine blade (403) provided inside the drive housing (302).

2. The coal mine goaf fireproof grouting conveying device according to claim 1, characterized in that: The drive assembly (4) also includes a water inlet pipe (404) connected to the top of the drive housing (302) and a drain pipe (405) connected to the bottom of the drive housing (302). One end of the water inlet pipe (404) and the drain pipe (405) are connected to a connecting pipe (406), and the other end of the connecting pipe (406) is connected to the water tank (402) and the booster pump (401) respectively.

3. The coal mine goaf fireproof grouting conveying device according to claim 1, characterized in that: One end of the rotating shaft (303) is fixedly connected to the turbine blade (403), and the surface of the rotating shaft (303) is movably connected to the inner wall of the drive housing (302) through a bearing.

4. A coal mine goaf fireproof grouting conveying device according to claim 1, characterized in that: The push plate (305) is slidably connected to a support rod (5), and a spring (6) is sleeved on the surface of the support rod (5).

5. A coal mine goaf fireproof grouting conveying device according to claim 1, characterized in that: The bottom of the fixed shell (301) is equipped with a support shaft (7), and the surface of the support shaft (7) is movably connected to an mounting shell (8). The top of both the fixed shell (301) and the mounting shell (8) are fixedly connected with snap-fit ​​plates (9).

6. A coal mine goaf fireproof grouting conveying device according to claim 5, characterized in that: The surface of the snap-fit ​​plate (9) is fitted with a fixing plate (10), and the top of the fixing plate (10) is threaded with a fixing bolt (11).

7. A coal mine goaf fireproof grouting conveying device according to claim 1, characterized in that: The other end of the rotating shaft (303) is movably connected to the inner wall of the fixed shell (301), and the fixed shell (301) has a through groove inside.

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