Fireproof grouting device for coal mine

Abstract

The utility model relates to the technical field of coal mine fire prevention, and discloses a coal mine fireproof grouting device which comprises a grouting head movably arranged at one end of a grout conveying pipe of a grout making machine, grout outlets evenly formed in the grouting head and used for enabling grout to flow out, and an adjusting structure arranged in the grouting head and used for adjusting the grouting flow. According to the grouting device, the problems that danger is easily caused and the grouting amount cannot be controlled due to the fact that a user needs to hold the grouting device by hand during grouting, and danger is easily caused and the grouting amount cannot be controlled due to the fact that the user needs to hold the grouting device by hand during grouting are solved; when the grouting head is used, the grouting head is directly placed in a place where grouting is needed, people do not need to support the grouting head, then the danger is reduced, the flow of the grouting amount can be better controlled, and the situation that grout is wasted is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine fire prevention, in particular to a coal mine fire prevention grouting device. Background Art

[0002] At present, during the withdrawal process of the fully-mechanized caving working face in the flammable coal seam underground in coal mines, the roof is broken due to the influence of mine pressure, resulting in a large amount of floating coal, which is easy to spontaneously combust. In order to prevent the floating coal from spontaneously combusting, grouting is generally carried out on the floating coal underground.

[0003] The existing floating coal grouting in coal mines requires the operator to pick up the grouting head and then grouting into the coal mine tunnel. When the coal seam fully mechanized caving working face is withdrawn, the mine tunnel is prone to roof collapse, which is dangerous when personnel perform hand-held grouting. At the same time, the grouting amount cannot be adjusted according to the amount of floating coal, resulting in a waste of materials. Utility Model Content

[0004] The utility model aims to solve the problems that the grouting needs to be held by hand, which may cause danger and the grouting amount cannot be controlled.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A coal mine fireproof grouting device, comprising:

[0007] A grouting head, movably arranged at one end of the slurry delivery pipe of the slurry making machine;

[0008] Slurry outlets are evenly arranged on the grouting head for slurry to flow out;

[0009] The regulating structure is arranged inside the grouting head and is used for adjusting the flow rate of grouting.

[0010] According to the coal mine fire prevention grouting device provided by the utility model: a liquid accumulation chamber is opened in the grouting head, and the liquid accumulation chamber is connected with the slurry outlet.

[0011] According to the coal mine fireproof grouting device provided by the utility model:

[0012] The regulating structure comprises: a limiting plate and a pressing spring;

[0013] The limiting plate is movably embedded in the liquid accumulation cavity, and the limiting plate can move in the liquid accumulation cavity;

[0014] The extrusion spring is arranged at the bottom of the liquid accumulation chamber and is fixedly connected to the limiting plate.

[0015] According to the coal mine fire prevention grouting device provided by the utility model: a filling ball is movably embedded in the slurry outlet, an auxiliary liquid outlet hole is penetrated through the filling ball, and the filling ball can move in the slurry outlet.

[0016] According to the coal mine fire prevention grouting device provided by the utility model: a limiting cavity is opened on the inner wall of the slurry outlet, a tension spring is fixedly arranged in the limiting cavity, and the tension spring is fixedly connected to the filling ball.

[0017] According to the coal mine fire prevention grouting device provided by the utility model: the filling ball is protrudingly arranged on the surface of the grouting head and supports the grouting head at the same time; one end of the grouting head is integrally formed with a connecting head.

[0018] The utility model has the following beneficial effects:

[0019] The grouting head is used to set the grouting head and the pulping machine together, so that the pulping machine can better transport the prepared slurry to the mine, and at the same time, the slurry is sprayed out through the grouting head. During the spraying process, the slurry adheres to the floating coal, thereby increasing the volume of the floating coal and falling to the ground and wetting the floating coal to prevent it from spontaneous combustion. The grouting head is set to reduce the support of personnel and better improve the safety during grouting. At the same time, the adjustment structure is set to better control the flow of slurry during grouting, making grouting safer and more economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 It is a top view of the overall structure of the embodiment of the utility model;

[0022] Figure 3 It is a side plan view of the overall structure of the embodiment of the utility model;

[0023] Figure 4 yes Figure 3 Sectional view at AA;

[0024] Figure 5 yes Figure 4 Sectional view at point A.

[0025] Legend:

[0026] 1. Grouting head;

[0027] 10. Slurry outlet; 101. Filling ball; 102. Liquid accumulation chamber; 103. Restriction chamber; 104. Tension spring; 105. Auxiliary liquid outlet; 11. Adjustment structure; 110. Restriction plate; 111. Extrusion spring;

[0028] 2. Connector. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Combine the following Figure 1-Figure 5 The embodiment shown describes the technical solution of the utility model:

[0031] A coal mine fireproof grouting device comprises: a grouting head 1, which is movably arranged at one end of a slurry delivery pipe of a slurry making machine, slurry outlets 10 are evenly arranged on the grouting head 1 for slurry to flow out, and an adjusting structure 11 is arranged inside the grouting head 1 for adjusting the grouting flow rate.

[0032] It can be understood that the grouting head 1 is a tubular structure with one end open and the other end being a conical structure. The grouting head 1 is connected to a pulping machine so that the slurry produced by the pulping machine is transported to the grouting head 1 and discharged through the slurry outlet 10 on the grouting head 1, dispersing the slurry to various parts, making the grouting more comprehensive. Secondly, the adjusting structure 11 is used to adjust the flow rate of the slurry, so as to better control the flow rate of the slurry and reduce waste.

[0033] The coal mine fire prevention grouting device provided by the embodiment of the utility model has a grouting head 1, and the grouting head 1 is arranged together with the pulping machine, so that the pulping machine can better transport the prepared slurry to the mine, and at the same time, the slurry is sprayed out through the grouting head 1. During the spraying process, the slurry is attached to the floating coal, thereby increasing the volume of the floating coal and falling to the ground and wetting the floating coal to prevent it from spontaneous combustion. The grouting head 1 is provided to reduce the support of personnel and better improve the safety during grouting. At the same time, the adjustment structure 11 is provided to better control the flow rate of the slurry during grouting, making the grouting safer and more economical.

[0034] According to the coal mine fire prevention grouting device provided by the embodiment of the utility model, a liquid accumulation chamber 102 is opened in the grouting head 1, and the liquid accumulation chamber 102 is connected with the slurry outlet 10.

[0035] Figure 4 A coal mine fire prevention grouting device is implemented in which the grouting head 1 is set as a cylindrical structure with one end closed to form a liquid accumulation chamber 102. At the same time, one end of the cylindrical structure is a conical structure, and the liquid accumulation chamber 102 is connected with the slurry outlet 10 to allow the slurry to flow out better and more evenly.

[0036] The coal mine fire prevention grouting device provided by the embodiment of the utility model has a grouting head 1 and a liquid accumulation chamber 102 inside the grouting head 1, so that the grouting liquid can be better stored and gathered, and the outflow of the slurry in the grouting head 1 is more convenient, and the slurry spraying is more uniform, so as to better improve the overall effect, so that the slurry can better adhere to the surface of the floating coal, wet and precipitate the floating coal, and reduce the effect of spontaneous combustion.

[0037] According to the coal mine fire prevention grouting device provided by the embodiment of the utility model, the adjustment structure 11 includes: a limiting plate 110 and an extrusion spring 111, the limiting plate 110 is movably embedded in the liquid accumulation chamber 102, the limiting plate 110 can move in the liquid accumulation chamber 102, and the extrusion spring 111 is arranged at the bottom of the liquid accumulation chamber 102 and fixedly connected to the limiting plate 110.

[0038] Figure 3 and Figure 4 A coal mine fire prevention grouting device is implemented, in which the adjustment structure 11 is set as a limiting plate 110 and an extrusion spring 111, and the limiting plate 110 is set to be circular, and is movably embedded in the liquid accumulation chamber 102, and moves in the liquid accumulation chamber 102, and the extrusion spring 111 is set at the bottom of the liquid accumulation chamber 102 and on the limiting plate 110, so that the extrusion spring 111 is set between the limiting plate 110 and the bottom of the liquid accumulation chamber 102, so as to better limit the movement of the limiting plate 110 by the extrusion spring 111.

[0039] The coal mine fire prevention grouting device provided by the embodiment of the utility model is provided with an extrusion spring 111 and a limiting plate 110. The limiting plate 110 is movably arranged in the liquid accumulation chamber 102. The extrusion spring 111 makes the limiting plate 110 encounter a certain resistance during movement, thereby limiting the movement of the limiting plate 110. Due to the limiting effect on the limiting plate 110, the limiting plate 110 can better prevent the slurry from entering the liquid accumulation chamber 102, thereby reducing the slurry in the liquid accumulation chamber 102, thereby adjusting the flow of the grouting head 1, thereby achieving a saving effect. At the same time, when the demand is large, the pressure introduced into the liquid accumulation chamber 102 is increased, and the extrusion spring 111 is compressed by the pressure, thereby adjusting the flow of the grouting head 1, making the grouting head 1 more stable, thereby increasing the flow of the slurry, and making the grouting more convenient and safe.

[0040] According to the coal mine fire prevention grouting device provided by the embodiment of the utility model, a filling ball 101 is movably embedded in the slurry outlet 10, and an auxiliary liquid outlet hole 105 is penetrated through the filling ball 101, so that the filling ball 101 can move in the slurry outlet 10.

[0041] Figure 1 , Figure 3 and Figure 4A coal mine fire prevention grouting device is implemented in the invention, in which a filling ball 101 is embedded in the slurry outlet 10, and the filling ball 101 is a spherical structure, and an auxiliary liquid outlet hole 105 is penetrated through the filling ball 101, and the auxiliary liquid outlet hole 105 penetrates and connects with the liquid accumulation cavity 102, and the filling ball 101 can be moved by pressure during use, so that a gap is generated at the edge.

[0042] The coal mine fire prevention grouting device provided by the embodiment of the utility model has a filling ball 101, and the filling ball 101 is set to be spherical, so that the filling ball 101 can be better embedded in the slurry outlet 10, blocking the slurry outlet when not in use, and avoiding blocking of soil during movement, preventing soil from entering and clogging the slurry outlet 10, and the filling ball 101 makes it more convenient to place and move the grouting head 1, thereby better improving the overall movement effect.

[0043] According to the coal mine fireproof grouting device provided by the embodiment of the utility model, a limiting cavity 103 is opened on the inner wall of the slurry outlet 10 , and a tension spring 104 is fixedly arranged in the limiting cavity 103 , and the tension spring 104 is fixedly connected to the filling ball 101 .

[0044] Figure 4 and Figure 5 A coal mine fire prevention grouting device is implemented, a limiting cavity 103 is opened on the inner wall of the slurry outlet 10, and the limiting cavity 103 is symmetrically arranged, and a tension spring 104 is fixedly arranged in the limiting cavity 103, and the tension spring 104 and the filling ball 101 are fixedly connected together, so that the tension spring 104 can limit the filling ball 101.

[0045] The coal mine fire prevention grouting device provided by the embodiment of the utility model connects the stretching spring 104 with the filling ball 101 through the set stretching spring 104, and a limiting cavity 103 is set on the inner wall of the slurry outlet 10, and the stretching spring 104 is set in the limiting cavity 103. The stretching spring 104 better limits the filling ball 101, so that the filling ball 101 can produce a certain gap at the slurry outlet 10 under the action of pressure, thereby facilitating the outflow of slurry, thereby making the grouting more uniform, and at the same time better limiting the filling ball 101 from detaching, so that it can be better placed in the slurry outlet 10.

[0046] According to the coal mine fire prevention grouting device provided by the embodiment of the utility model, the filling ball 101 is protrudingly arranged on the surface of the grouting head 1 and supports the grouting head 1 at the same time. A connecting head 2 is integrally formed at one end of the grouting head 1.

[0047] Figure 3 and Figure 5A coal mine fire prevention grouting device is implemented in which a filling ball 101 is arranged so that one end thereof protrudes from the surface of a grouting head 1 during filling, and the grouting head 1 is supported at the same time. Moreover, a connecting head 2 is integrally formed at one end of the grouting head 1, and a threaded strip is arranged on the surface of the connecting head 2.

[0048] The coal mine fire prevention grouting device provided by the embodiment of the utility model has a filling ball 101, and one end surface of the filling ball 101 is protrudingly set on the grouting head 1. At the same time, the grouting head 1 can be supported by the filling ball 101, so that the grouting head 1 is kept at a certain distance from the ground, thereby better facilitating the movement of the grouting head 1 and reducing the resistance to movement. At the same time, the connecting head 2 that is set can be better connected to the slurry pipe on the pulping machine, making the connection more convenient, and secondly improving the overall grouting safety.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal mine fireproof grouting device, characterized in that: include: A grouting head (1) is movably arranged at one end of a slurry delivery pipe of a slurry making machine; Slurry outlets (10) are evenly arranged on the grouting head (1) for slurry to flow out; The regulating structure (11) is arranged inside the grouting head (1) and is used to adjust the flow rate of grouting.

2. A coal mine fireproof grouting device according to claim 1, characterized in that: A liquid accumulation chamber (102) is provided in the grouting head (1), and the liquid accumulation chamber (102) is connected to the grout outlet (10).

3. A coal mine fireproof grouting device according to claim 2, characterized in that: The regulating structure (11) comprises: a limiting plate (110) and a pressing spring (111); The limiting plate (110) is movably embedded in the liquid accumulation chamber (102), and the limiting plate (110) can move in the liquid accumulation chamber (102); The extrusion spring (111) is arranged at the bottom of the liquid accumulation chamber (102) and is fixedly connected to the limiting plate (110).

4. A coal mine fireproof grouting device according to claim 1, characterized in that: A filling ball (101) is movably embedded in the slurry outlet (10), an auxiliary liquid outlet hole (105) is penetrated through the filling ball (101), and the filling ball (101) can move in the slurry outlet (10).

5. A coal mine fireproof grouting device according to claim 4, characterized in that: A limiting cavity (103) is provided on the inner wall of the slurry outlet (10), a tension spring (104) is fixedly arranged in the limiting cavity (103), and the tension spring (104) is fixedly connected to the filling ball (101).

6. A coal mine fireproof grouting device according to claim 5, characterized in that: The filling ball (101) is protrudingly arranged on the surface of the grouting head (1) and supports the grouting head (1) at the same time; one end of the grouting head (1) is integrally formed with a connecting head (2).

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