Fire preventing and extinguishing grouting device for coal mine

Abstract

The utility model relates to the field of coal mine safety equipment, in particular to a coal mine fire preventing and extinguishing grouting device. The coal mine fire preventing and extinguishing grouting device comprises a grouting machine body, a slurry conveying pipe, a slurry spraying pipe, an adapter, a fan-shaped table body, a limiting assembly, a stirring rod and a rotating assembly, a stirring barrel is installed at the top of the grouting machine body, the bottom of the stirring barrel communicates with a slurry pump, the output end of the slurry pump communicates with the slurry conveying pipe, one end of the slurry conveying pipe communicates with the slurry spraying pipe, and the other end of the slurry conveying pipe communicates with the rotating assembly. One end of the guniting pipe is provided with a conversion head, and one end of the conversion head is provided with a fan-shaped table body. According to the fire preventing and extinguishing grouting device for the coal mine, switching of two guniting modes is achieved through the straight spraying pipe and the scattered spraying pipe on the fan-shaped table body, the straight spraying pipe is suitable for conducting accurate and large-amount grouting on a specific area, the scattered spraying pipe can cover a wider area, the fire extinguishing efficiency is improved, and the fire extinguishing effect is improved. Particularly, in a large-area area needing to be rapidly cooled, the grouting time can be remarkably shortened, and fire spreading can be effectively controlled in time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of coal mine safety equipment especially relates to a coal mine fire prevention and extinguishing grouting device. BACKGROUND

[0002] In the process of coal mining, fire is one of the important factors that seriously threaten the safety production. The coal mine fire prevention and extinguishing work is very important, and the grouting fire extinguishing as a common and effective means has higher requirements for the performance of the grouting device.

[0003] The traditional coal mine fire prevention and extinguishing grouting device has many problems in practical application. On the one hand, its grouting mode is relatively single, mostly adopts straight jet mode of grouting pipe, when facing the area that needs to be cooled in a large area, the straight jet mode is extremely low in efficiency, because it can only spray at a specific local position, it needs to consume a lot of time and energy to cover a large area, and it is difficult to uniformly cool the whole area, which not only wastes a lot of grouting resources, but also cannot effectively control the spread of fire, which poses a great hidden danger to the safety production of coal mine, on the other hand, for the area that needs a lot of grouting, straight jet can meet the demand of grouting amount to a certain extent, but due to its limitation, it cannot flexibly adjust the grouting mode according to different fire scenes, resulting in poor overall fire extinguishing effect.

[0004] In addition, when the grouting area is transferred, the slurry remaining in the grouting pipe of the traditional grouting device is easy to precipitate. The grouting pipe is usually a long pipeline, after stopping grouting, the remaining slurry in the pipe lacks the power of continuous flow, the solid particles and other components in it will gradually settle at the bottom of the pipe, when the grouting device is used again, the precipitated slurry is easy to block the pipeline, affecting the normal transportation of the slurry, and then seriously affecting the grouting effect, reducing the efficiency and quality of the grouting fire extinguishing work, and even may cause the grouting operation to be unable to proceed normally, delay the fire extinguishing opportunity.

[0005] Therefore, it is necessary to provide a new coal mine fire prevention and extinguishing grouting device to solve the above technical problems. UTILITY MODEL CONTENT

[0006] In order to solve the above technical problems, the utility model provides a coal mine fire prevention and extinguishing grouting device.

[0007] The coal mine fire prevention and extinguishing grouting device provided by the utility model comprises a grouting machine body, a grout conveying pipe, a grout spraying pipe, a conversion head, a fan-shaped table body, a limiting assembly, a stirring rod and a rotating assembly, a stirring barrel is installed on the top of the grouting machine body, a grout pumping pump is communicated with the bottom of the stirring barrel, a grout conveying pipe is communicated with the output end of the grout pumping pump, a grout spraying pipe is communicated with one end of the grout conveying pipe, a conversion head is installed on one end of the grout spraying pipe, a fan-shaped table body is installed on one end of the conversion head, a straight spraying pipe is installed on the outer wall of the fan-shaped table body, a scattered spraying pipe is installed on the outer wall of the fan-shaped table body and is perpendicular to the straight spraying pipe, the limiting assembly is installed between the fan-shaped table body and the conversion head, the limiting assembly is used for fixing the position of the fan-shaped table body after the spraying mode is switched, the stirring rod is installed equidistantly in the end of the grout spraying pipe close to the grout conveying pipe, the rotating assembly is installed between the grout spraying pipe and the stirring rod, and the rotating assembly drives the stirring rod to rotate and is used for mixing the grout in the grout spraying pipe.

[0008] Preferably, the limiting assembly comprises spherical lugs, springs and clamping grooves, equidistantly symmetrical circular grooves are formed in the interior of the fan-shaped table body, the inner walls of the circular grooves are fixedly connected with the springs, one end of each spring is fixedly connected with a spherical lug, and the spherical lugs are slidably connected with the inner walls of the corresponding circular grooves; equidistantly symmetrical clamping grooves are formed in the end of the conversion head close to the fan-shaped table body, and the clamping grooves are clamped with the corresponding spherical lugs.

[0009] Preferably, a sealing gasket is arranged on the inner wall of the conversion head, symmetrical ear plates are fixedly connected with the outer wall of the conversion head, eccentric clamping blocks are rotatably connected with the interiors of the ear plates, handles are fixedly connected with one side of each eccentric clamping block, and an arc-shaped groove is formed in the end of the grout conveying pipe close to the conversion head, and the two eccentric clamping blocks are clamped with the arc-shaped groove.

[0010] Preferably, the rotating assembly comprises an impeller and a connecting rod, the connecting rod is rotatably connected with the interior of the end of the grout spraying pipe close to the grout conveying pipe, one end of the connecting rod is fixedly connected with the impeller, and the other end of the connecting rod is fixedly connected with the stirring rods.

[0011] Preferably, the straight spraying pipe is fixedly connected with the fan-shaped table body, the scattered spraying pipe is rotatably connected with the fan-shaped table body, and equidistantly symmetrical inclined grout outlets are formed in one end of the scattered spraying pipe.

[0012] Preferably, the end of the conversion head close to the fan-shaped table body is designed in an arc shape and is attached to the inner wall of the fan-shaped table body.

[0013] Preferably, the rotation angle of the fan-shaped table body after the spraying mode is switched is 90 degrees.

[0014] Preferably, anti-skid sleeves are equidistantly arranged on the outer wall of the grout spraying pipe.

[0015] Compared with the related art, the coal mine fire prevention and extinguishing grouting device has the following beneficial effects:

[0016] Multi-mode grouting improves the fire extinguishing efficiency.

[0017] Direct injection combined with scattered injection: the device realizes the switching of the two grouting modes through the direct injection pipe and the scattered injection pipe on the fan-shaped table body. The direct injection pipe is suitable for precise and large grouting on specific areas, while the scattered injection pipe can cover a wider area, improving the fire extinguishing efficiency. Especially in large areas that need rapid cooling, the grouting time can be significantly shortened, effectively controlling the spread of fire;

[0018] Flexible switching: through the design of the limiting component, the fan-shaped table body can be conveniently rotated by 90 degrees to switch between direct injection and scattered injection modes. The operation is simple and fast, and it adapts to the needs of different fire scenes;

[0019] Prevent slurry sedimentation and ensure grouting effect:

[0020] Stirring rod and rotating assembly: at the end of the grouting pipe close to the slurry conveying pipe, a stirring rod and a rotating assembly are set. When the slurry flows through, the rotating assembly is driven to rotate, driving the stirring rod to stir the slurry, effectively preventing the slurry from settling in the pipe, ensuring the uniformity and flowability of the slurry;

[0021] Continuous mixing: the continuous rotation of the stirring rod not only prevents the slurry from settling, but also improves the uniformity of the slurry, so that each time the slurry is sprayed has consistent fire extinguishing effect, improving the quality of grouting fire extinguishing work;

[0022] The limiting component ensures the stability of the fan-shaped table body after switching the grouting mode, while the design of the sealing gasket and the eccentric block ensures the sealing of the connection, preventing slurry leakage, and also facilitating disassembly and cleaning, reducing maintenance cost;

[0023] The anti-slip sleeve set on the outer wall of the grouting pipe increases the holding stability of the operator, reducing the safety risk in the operation process. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The structure diagram of the coal mine fire prevention and extinguishing grouting device is provided;

[0025] Figure 2 The structure diagram of the grouting pipe is shown in the figure; Figure 1 The structure diagram of the rotating assembly is shown in the figure;

[0026] Figure 3 The structure diagram of the conversion head is shown in the figure; Figure 2 The structure diagram of the fan-shaped table body is shown in the figure;

[0027] Figure 4 The structure diagram of the fan-shaped table body is shown in the figure; Figure 2 The structure diagram of the fan-shaped table body is shown in the figure;

[0028] Figure 5 The structure diagram of the fan-shaped table body is shown in the figure; Figure 2 The structure diagram of the fan-shaped table body is shown in the figure;

[0029] Figure 6 For Figure 5 The structural schematic diagram of the fan-shaped platform body section is shown.

[0030] The figure label: 1, the grouting machine body; 2, the stirring barrel; 3, the pumping pump; 4, the grout conveying pipe; 5, the grout spraying pipe; 6, the conversion head; 7, the fan-shaped platform body; 8, the straight spraying pipe; 9, the scattered spraying pipe; 10, the stirring rod; 11, the spherical convex block; 12, the spring; 13, the clamping groove; 14, the sealing gasket; 15, the lug plate; 16, the eccentric clamping block; 17, the handle; 18, the arc-shaped slot; 19, the impeller; 20, the connecting rod. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0032] The specific implementation of the utility model is described in detail by combining with specific examples.

[0033] Please refer to Figures 1 to 6The utility model provides a coal mine fire prevention grouting device, the coal mine fire prevention grouting device includes: grouting machine body 1, the slurry pipe 4, the slurry pipe 5, the conversion head 6, the fan -shaped platform body 7, the limiting assembly, the stirring rod 10 and the rotation subassembly, the top of grouting machine body 1 is equipped with the stirring bucket 2, the bottom of stirring bucket 2 is connected with the slurry pump 3, the output of slurry pump 3 is connected with the slurry pipe 4, one end of slurry pipe 4 is connected with the slurry pipe 5, one end of slurry pipe 5 is equipped with the conversion head 6, one end of conversion head 6 is equipped with the fan -shaped platform body 7, the outer wall of fan -shaped platform body 7 is equipped with the straight -jet pipe 8, the outer wall of fan -shaped platform body 7 is equipped with the scattered spray pipe 9 perpendicular to straight -jet pipe 8, the limiting assembly is installed between fan -shaped platform body 7 and conversion head 6, the limiting assembly is used to fix the position of fan -shaped platform body 7 after switching the slurry spraying mode, one end of slurry pipe 5 close to the slurry pipe 4 is internally installed with the stirring rod 10 at equal intervals, and the rotation subassembly is installed between slurry pipe 5 and stirring rod 10, the rotation subassembly drives stirring rod 10 to rotate for mixing the slurry in slurry pipe 5, the limiting assembly includes: spherical lug 11, spring 12 and clamping groove 13, the inside of fan -shaped platform body 7 is equidistantly and symmetrically provided with circular groove, the inner wall of circular groove is fixedly connected with spring 12, one end of spring 12 is fixedly connected with spherical lug 11, spherical lug 11 is slidably connected with the inner wall of corresponding circular groove, one end of conversion head 6 close to fan -shaped platform body 7 is equidistantly and symmetrically provided with clamping groove 13, clamping groove 13 is clamped with corresponding spherical lug 11, the inner wall of conversion head 6 is placed with sealing pad 14, the outer wall of conversion head 6 is fixedly connected with ear plate 15 symmetrically, the inside of ear plate 15 is rotatably connected with eccentric clamping block 16, one side of eccentric clamping block 16 is fixedly connected with handle 17, one end of slurry pipe 4 close to conversion head 6 is provided with arc slot 18, two eccentric clamping blocks 16 are clamped with arc slot 18, straight -jet pipe 8 is fixedly connected with fan -shaped platform body 7, scattered spray pipe 9 is rotatably connected with fan -shaped platform body 7, one end of scattered spray pipe 9 is equidistantly and symmetrically provided with inclined slurry outlet hole, one end of conversion head 6 close to fan -shaped platform body 7 is arc -shaped design, and is attached with the inner wall of fan -shaped platform body 7, the rotation angle of fan -shaped platform body 7 after switching the slurry spraying mode is 90 degrees, and the outer wall of slurry pipe 5 is equidistantly provided with antiskid sleeve.

[0034] Need to explain: the top of grouting machine body 1 is placed with battery, provides the electric energy drive each component operation for the device, the slurry pipe 4 adopts rubber material quality;

[0035] One end of conversion head 6 close to fan -shaped platform body 7 is arc -shaped design, and the both ends of arc -shaped head are symmetrically provided with clamping groove 13, when straight -jet mode, the spherical lug 11 of one side of fan -shaped platform body 7 close to straight -jet pipe 8 is clamped with the clamping groove 13 of one end of arc -shaped head, when scattered spray mode, the spherical lug 11 of one side of fan -shaped platform body 7 close to scattered spray pipe 9 is clamped with the clamping groove 13 of other end of arc -shaped head.

[0036] Please refer to Figure 1 、 Figure 2 and Figure 3The rotating assembly comprises: an impeller 19 and a connecting rod 20, the connecting rod 20 is rotatably connected inside one end of the jetting pipe 5 close to the slurry conveying pipe 4, one end of the connecting rod 20 is fixedly connected with the impeller 19, and the other end of the connecting rod 20 is fixedly connected with the stirring rods 10;

[0037] It should be noted that: when the slurry injection area is transferred, the residual slurry in the slurry conveying pipe 4 is easy to precipitate, which affects the subsequent slurry injection work, in order to solve this problem, the device is provided with a rotating assembly, when the slurry injection machine body 1 is started again, the slurry flows through the slurry conveying pipe 4 into the jetting pipe 5 under the action of pressure, the impact force generated when the slurry flows drives the impeller 19 to rotate, the impeller 19 is rotatably connected with the jetting pipe 5 through the connecting rod 20, so the rotation of the impeller 19 drives the connecting rod 20 to rotate, and further drives the stirring rods 10 to rotate, the stirring rods 10 rotate to stir and mix the slurry entering the inside of the jetting pipe 5, so that the components such as solid particles in the slurry are uniformly distributed, precipitation is avoided, and the ejected slurry is uniformly mixed slurry, thereby improving the efficiency and quality of the slurry injection fire extinguishing work.

[0038] The working principle of the coal mine fire prevention and extinguishing grouting device is as follows:

[0039] Device assembly and connection

[0040] Before using the grouting device, assembly operation is needed, the conversion head 6 is sleeved on one end of the jetting pipe 5, and the inner wall of the conversion head 6 is provided with a sealing gasket 14, which can ensure the sealing property of the connection part and prevent slurry leakage, the staff rotates the handle 17, so that the eccentric clamping block 16 rotates, and finally is clamped with the arc-shaped slot 18 opened at one end of the slurry conveying pipe 4 close to the conversion head 6, the clamping mode can firmly connect the conversion head 6 and the slurry conveying pipe 4 together, and ensure the stability of the device in the working process;

[0041] Conventional grouting process

[0042] When the device assembly is completed, the slurry injection machine body 1 is started, the slurry injection machine body 1 is provided with the stirring barrel 2, the slurry in the stirring barrel 2 has been uniformly stirred in advance, the slurry pump 3 is communicated with the bottom of the stirring barrel 2, and the slurry in the stirring barrel 2 is extracted by the strong suction of the slurry pump 3 after the slurry pump 3 is started;

[0043] The extracted slurry enters the slurry conveying pipe 4 through the output end of the slurry pump 3, the slurry conveying pipe 4 serves as a channel for slurry conveying, and transmits the slurry to the jetting pipe 5, the slurry flows in the slurry conveying pipe 4 and finally reaches the jetting pipe 5, and then is sprayed to the area needing grouting through the conversion head 6, the slurry is usually sprayed through the straight jet pipe 8, and this spraying mode is suitable for grouting at specific local positions;

[0044] Spraying mode switching

[0045] 1. Switch to the scattered spray mode

[0046] When facing a large area that needs to be cooled down, the traditional direct injection mode is inefficient, at which time it needs to be switched to the scattered spray mode. The worker holds the direct injection pipe 8 on one side of the fan-shaped table body 7 and starts to rotate the fan-shaped table body 7 by 90 degrees;

[0047] During the rotation process, the limiting assembly plays a role. When the worker rotates the fan-shaped table body 7, the spherical protrusion 11 inside one side of the fan-shaped table body 7 is extruded by the clamping groove 13 at one end of the conversion head 6. Since the spherical protrusion 11 is in sliding connection with the inner wall of the circular groove, the spherical protrusion 11 will slide in the circular groove and compress the spring 12. When the spherical protrusion 11 is disengaged from the clamping groove 13 of the conversion head 6, the spring 12 is in a compressed state and stores elastic potential energy;

[0048] As the fan-shaped table body 7 continues to rotate, the spherical protrusion 11 on one side of the fan-shaped table body 7 completely disengages from the conversion head 6. At this time, the spring 12 releases the elastic force, and the spherical protrusion 11 on the other side is extruded by the conversion head 6, which also starts to slide in the circular groove and compress the spring 12. When the fan-shaped table body 7 is rotated by 90 degrees, the spherical protrusion 11 on the other side reaches the position of the corresponding clamping groove 13 inside the conversion head 6. At this time, the spring 12 releases the elastic force and pushes the spherical protrusion 11 to be clamped with the clamping groove 13, thereby fixing the fan-shaped table body 7 at the current position;

[0049] At this time, the conversion head 6 is in communication with the scattered spray pipe 9, and the slurry is sprayed through the equidistantly and symmetrically opened inclined slurry outlet holes at one end of the scattered spray pipe 9. Since the slurry outlet holes are inclined, a fan-shaped spraying area is formed after the slurry is sprayed, which can cover a larger area and improve the efficiency of cooling a large area. In addition, the scattered spray pipe 9 is rotationally connected with the fan-shaped table body 7, and the worker can rotate the scattered spray pipe 9 according to actual needs to adjust to a suitable spraying angle, so as to better meet the needs of different scenes;

[0050] 2. Switch back to the direct injection mode

[0051] When a large amount of grouting is needed for a specific area, the worker can rotate the fan-shaped table body 7 in the opposite direction to repeat the action process of the limiting assembly, so that the conversion head 6 is in communication with the direct injection pipe 8 again. At this time, the slurry is sprayed through the direct injection pipe 8 to meet the demand for a large amount of grouting in a specific area;

[0052] Prevent slurry from precipitating

[0053] When the grouting area is transferred, the residual slurry in the slurry conveying pipe 4 is easy to precipitate, which affects the subsequent grouting work, in order to solve this problem, the device is provided with a rotating assembly, when the grouting machine body 1 is started again, the slurry flows through the slurry conveying pipe 4 into the slurry injection pipe 5 under the action of pressure, the impact force generated when the slurry flows drives the impeller 19 to rotate, the impeller 19 is rotatably connected with the slurry injection pipe 5 through the connecting rod 20, so the rotation of the impeller 19 will drive the connecting rod 20 to rotate, and then drive the stirring rod 10 to rotate, the rotation of the stirring rod 10 stirs and mixes the slurry entering the inside of the slurry injection pipe 5, so that the solid particles and other components in the slurry are evenly distributed, precipitation is avoided, and it is ensured that the sprayed slurry is uniformly mixed slurry, thereby improving the efficiency and quality of the grouting fire extinguishing work.

[0054] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation obtained by using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A coal mine fire prevention and extinguishing grouting device, characterized in that, The utility model relates to a slurry injection machine, which comprises a slurry injection machine body (1), a stirring barrel (2) mounted on the top of the slurry injection machine body (1), a slurry pump (3) connected to the bottom of the stirring barrel (2), a slurry conveying pipe (4) connected to the output end of the slurry pump (3), a slurry injection pipe (5) connected to one end of the slurry conveying pipe (4), a conversion head (6) mounted on one end of the slurry injection pipe (5), a fan-shaped platform (7) mounted on one end of the conversion head (6), a straight injection pipe (8) mounted on the outer wall of the fan-shaped platform (7), a scattered injection pipe (9) mounted on the outer wall of the fan-shaped platform (7) perpendicularly to the straight injection pipe (8), a limiting assembly mounted between the fan-shaped platform (7) and the conversion head (6) and used for fixing the position of the fan-shaped platform (7) after switching the slurry injection mode, a stirring rod (10) mounted equidistantly inside one end of the slurry injection pipe (5) close to the slurry conveying pipe (4), and a rotating assembly mounted between the slurry injection pipe (5) and the stirring rod (10) and used for driving the stirring rod (10) to rotate to mix the slurry in the slurry injection pipe (5). The limiting assembly comprises spherical lugs (11), springs (12) and clamping grooves (13), equidistantly symmetrical circular grooves are formed in the interior of the fan-shaped platform (7), the inner walls of the circular grooves are fixedly connected with the springs (12), one end of each spring (12) is fixedly connected with a spherical lug (11), the spherical lugs (11) are slidably connected with the inner walls of the corresponding circular grooves, equidistantly symmetrical clamping grooves (13) are formed in one end of the conversion head (6) close to the fan-shaped platform (7), and the clamping grooves (13) are clamped with the corresponding spherical lugs (11). A sealing gasket (14) is arranged on the inner wall of the conversion head (6), symmetrical ear plates (15) are fixedly connected to the outer wall of the conversion head (6), eccentric clamping blocks (16) are rotatably connected in the interiors of the ear plates (15), handles (17) are fixedly connected to one side of each eccentric clamping block (16), an arc-shaped groove (18) is formed in one end of the slurry conveying pipe (4) close to the conversion head (6), and the two eccentric clamping blocks (16) are clamped with the arc-shaped groove (18). The rotating assembly comprises an impeller (19) and a connecting rod (20), the connecting rod (20) is rotatably connected inside one end of the slurry injection pipe (5) close to the slurry conveying pipe (4), one end of the connecting rod (20) is fixedly connected with the impeller (19), and the other end of the connecting rod (20) is fixedly connected with the stirring rods (10). The straight injection pipe (8) is fixedly connected with the fan-shaped platform (7), the scattered injection pipe (9) is rotatably connected with the fan-shaped platform (7), and equidistantly symmetrical slurry outlet holes are formed in one end of the scattered injection pipe (9). One end of the conversion head (6) close to the fan-shaped platform (7) is designed in an arc shape and is attached to the inner wall of the fan-shaped platform (7). The rotation angle of the fan-shaped platform (7) after switching the slurry injection mode is 90 degrees. Anti-skid sleeves are equidistantly arranged on the outer wall of the slurry injection pipe (5). ​ 2. The coal mine fire prevention and extinguishing grouting device according to claim 1, characterized in that, ​ 3. The coal mine fire prevention and extinguishing grouting device according to claim 2, characterized in that, ​ 4. The coal mine fire prevention and extinguishing grouting device according to claim 1, characterized in that, ​ 5. The coal mine fire prevention and extinguishing grouting device according to claim 1, characterized in that, ​ 6. The coal mine fire prevention and extinguishing grouting device according to claim 1, characterized in that, ​ 7. The coal mine fire prevention and extinguishing grouting device according to claim 1, characterized in that, ​ 8. The coal mine fire prevention and extinguishing grouting device according to claim 1, characterized in that, ​

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