Nitrogen injection fireproof equipment for coal mine

Abstract

The utility model discloses nitrogen injection fireproof equipment for a coal mine in the technical field of nitrogen injection fireproof devices, which comprises a protection box and a mounting box, the mounting box is positioned in the inner cavity of the protection box, the bottom of the inner cavity of the protection box is fixedly connected with a spring, the inner cavity of the spring is sleeved with a damping rod, the tail end of the spring is fixedly connected with a mounting plate, and the mounting plate is fixedly connected with the mounting box. Air bags are fixedly connected to the left side wall and the right side wall of an inner cavity of the protection box, a water tank is fixedly connected to the upper side of the left side wall of the protection box, a water adding pipe is fixedly connected to the top of the water tank, and a booster pump is fixedly connected to the lower side of the left side wall of the protection box and communicates with the water tank through a pipeline; the nitrogen injection fire prevention equipment for the coal mine is reasonable in structural design and has a relatively strong protection function, the damage probability is reduced, the nitrogen tank is convenient to take out and mount, and the maintenance efficiency of the nitrogen tank is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of nitrogen injection fire prevention devices, specifically a nitrogen injection fire prevention device for coal mines. Background Technology

[0002] With the continuous increase in coal mining volume, coal mine safety accidents occur frequently. The main mine accidents currently occurring include fires, gas outbursts, and water inrushes, among which fire accidents are particularly prominent. Fires caused by spontaneous combustion of coal account for more than 90% of all mine fires. In order to prevent mine fires, nitrogen injection fire prevention devices are usually used to introduce nitrogen into the mine to achieve the purpose of fire prevention.

[0003] Existing nitrogen injection fire prevention devices face challenges due to the abundance of machinery in coal mining areas. These machines are prone to accidental collisions with the devices, and the lack of protective structures in typical devices makes it easy for the nitrogen tank inside to be damaged upon impact, potentially leading to safety accidents. To address this, we propose a nitrogen injection fire prevention device for coal mines. Utility Model Content

[0004] The purpose of this utility model is to provide a nitrogen injection fire prevention device for coal mines, in order to solve the problem mentioned in the background art that when existing nitrogen injection fire prevention devices are used, due to the large number of various machines in coal mine areas, there is a risk of accidental collisions between these machines and the nitrogen injection fire prevention device. Furthermore, the general nitrogen injection fire prevention device lacks a protective structure, which makes it easy for the nitrogen tank inside the device to be damaged once the machine collides with it, thereby affecting safety.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a nitrogen injection fire prevention device for coal mines, comprising a protective box and an installation box, wherein the installation box is located in the inner cavity of the protective box, a spring is fixedly connected to the bottom of the inner cavity of the protective box, a damping rod is sleeved in the inner cavity of the spring, an installation plate is fixedly connected to the end of the spring, and airbags are fixedly connected to the left and right side walls of the inner cavity of the protective box.

[0006] As a further description of the above technical solution:

[0007] A water tank is fixedly connected to the upper side of the left side wall of the protective box, and a water inlet pipe is fixedly connected to the top of the water tank.

[0008] As a further description of the above technical solution:

[0009] A booster pump is fixedly connected to the lower left side wall of the protective box, and the booster pump is connected to the water tank through a pipe.

[0010] As a further description of the above technical solution:

[0011] Rubber pads are fixedly connected to the left and right side walls of the inner cavity of the installation box, and a sleeve is fixedly connected to the bottom of the inner cavity of the installation box. The sleeve is connected to the booster pump through a pipe, and a piston rod is slidably connected to the inner cavity of the sleeve.

[0012] As a further description of the above technical solution:

[0013] A lifting plate is fixedly connected to the end of the piston rod, a nitrogen tank is placed on the top of the lifting plate, an outlet pipe is fixedly connected to the top of the nitrogen tank, and a first valve is fixedly connected to the right side of the outer wall of the outlet pipe via a flange.

[0014] As a further description of the above technical solution:

[0015] A drain pipe is fixedly connected to the lower right side wall of the sleeve. The end of the drain pipe passes through the mounting box and extends to the lower right side wall of the protective box. A second valve is fixedly connected to the right side of the outer side wall of the drain pipe via a flange.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. In this coal mine nitrogen injection fire prevention equipment, when the device is struck by other machinery, the protective box will be impacted first, preventing direct impact on the nitrogen tank and thus initially protecting the nitrogen tank. Then, the impact force is longitudinally buffered by springs and damping rods, further protecting the nitrogen tank. Subsequently, the impact force is laterally buffered by airbags, further protecting the nitrogen tank. Finally, rubber pads prevent the nitrogen tank from colliding with the mounting box due to shaking, thus giving the device strong protective capabilities and reducing the probability of damage.

[0018] 2. The nitrogen injection fire prevention equipment used in this coal mine uses a booster pump to deliver clean water from the water tank into the sleeve, increasing the water pressure inside the sleeve. Based on hydraulic principles, this water pressure pushes the piston rod upwards, which in turn lifts the lifting plate, raising the nitrogen tank from the installation box. This facilitates the removal of the nitrogen tank for maintenance. During installation, the second valve is opened, allowing clean water inside the sleeve to drain through the drain pipe, gradually reducing the water pressure inside the sleeve. This causes the piston rod to move downwards, which in turn moves the lifting plate, lowering the nitrogen tank into the installation box. This completes the installation of the nitrogen tank, making the removal and installation of the nitrogen tank easier and improving maintenance efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a nitrogen injection fire prevention device for coal mines proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of a nitrogen injection fire prevention device for coal mines proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the main sectional view of a nitrogen injection fire prevention device for coal mines proposed in this utility model;

[0022] Figure 4 This utility model proposes a nitrogen injection fire prevention device for coal mines. Figure 3 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 100, protective box; 110, spring; 120, damping rod; 130, mounting plate; 140, airbag; 150, water tank; 151, water inlet pipe; 160, booster pump; 200, mounting box; 210, rubber pad; 220, sleeve; 230, piston rod; 240, lifting plate; 250, nitrogen tank; 260, exhaust pipe; 270, first valve; 280, drain pipe; 290, second valve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] This utility model provides a nitrogen injection fire prevention device for coal mines, which has strong protective functions, reduces the probability of damage, and facilitates the removal and installation of nitrogen cylinders, improving the maintenance efficiency of nitrogen cylinders. Please refer to [link / reference]. Figure 1-4 This includes a protective box 100 and a mounting box 200;

[0028] Please see Figure 1-3 A spring 110 is fixedly connected to the bottom of the inner cavity of the protective box 100. A damping rod 120 is sleeved inside the spring 110. A mounting plate 130 is fixedly connected to the end of the spring 110. Airbags 140 are fixedly connected to the left and right side walls of the inner cavity of the protective box 100. A water tank 150 is fixedly connected to the upper side of the left side wall of the protective box 100. A water filling pipe 151 is fixedly connected to the top of the water tank 150. A booster pump 160 is fixedly connected to the lower side of the left side wall of the protective box 100. The booster pump 160 is connected to the water tank 150 through a pipe. When... When the device is struck by other machinery, the protective box 100 will be impacted first, thus preventing it from directly hitting the nitrogen tank 250, thereby initially protecting the nitrogen tank 250. Then, the spring 110 and the damping rod 120 will longitudinally buffer the impact force, thus protecting the nitrogen tank 250. Subsequently, the airbag 140 will laterally buffer the impact force, further protecting the nitrogen tank 250. Finally, the rubber pad 210 will prevent the nitrogen tank 250 from colliding with the mounting box 200 due to shaking.

[0029] In summary, this gives the device strong protective capabilities and reduces the probability of damage.

[0030] Please refer to it again. Figure 1-4The mounting box 200 is located inside the protective box 100. Rubber pads 210 are fixedly connected to the left and right side walls of the inner cavity of the mounting box 200. A sleeve 220 is fixedly connected to the bottom of the inner cavity of the mounting box 200. The sleeve 220 is connected to the booster pump 160 through a pipe. A piston rod 230 is slidably connected to the inner cavity of the sleeve 220. A lifting plate 240 is fixedly connected to the end of the piston rod 230. A nitrogen tank 250 is placed on the top of the lifting plate 240. An outlet pipe 260 is fixedly connected to the top of the nitrogen tank 250. A first valve 270 is fixedly connected to the right side of the outer wall of the outlet pipe 260 through a flange. A drain pipe 280 is fixedly connected to the lower side of the right side wall of the sleeve 220. The end of the drain pipe 280 passes through the mounting box 200 and extends to the lower side of the right side wall of the protective box 100. A second valve 270 is fixedly connected to the right side of the outer wall of the drain pipe 280 through a flange. Valve 290, via booster pump 160, delivers clean water from water tank 150 to sleeve 220, increasing the water pressure inside sleeve 220. Based on hydraulic principles, this water pressure pushes piston rod 230 upwards, which in turn raises lifting plate 240, lifting nitrogen tank 250 out of mounting box 200. This facilitates the removal of nitrogen tank 250 for maintenance. When installing nitrogen tank 250, opening second valve 290 allows clean water inside sleeve 220 to drain through drain pipe 280, gradually reducing the water pressure inside sleeve 220. This causes piston rod 230 to move downwards, which in turn moves lifting plate 240, lowering nitrogen tank 250 into mounting box 200, thus completing the installation of nitrogen tank 250.

[0031] In summary, this makes it easier to remove and install the nitrogen tank 250, thus improving the maintenance efficiency of the nitrogen tank 250.

[0032] In practical use, those skilled in the art first install the device at the work site. Then, in the event of an accidental collision during operation, the protective housing 100 absorbs the impact, preventing direct impact on the nitrogen tank 250. The spring 110, in conjunction with the damping rod 120, provides longitudinal cushioning of the impact force, further protecting the nitrogen tank 250. Subsequently, the airbag 140 provides lateral cushioning of the impact force, further protecting the nitrogen tank 250. Simultaneously, the rubber pad 210 inside the mounting box 200 protects the nitrogen tank 250, preventing it from colliding with the mounting box 200 due to shaking. When maintenance of the nitrogen tank 250 is required, the booster pump 160... Clean water in water tank 150 is supplied to sleeve 220, increasing the water pressure inside sleeve 220. This causes piston rod 230 to lift lifting plate 240, which in turn lifts nitrogen tank 250 out of installation box 200, making it easier to remove nitrogen tank 250 for maintenance. When installing nitrogen tank 250, opening second valve 290 allows clean water inside sleeve 220 to drain from drain pipe 280, gradually reducing the water pressure inside sleeve 220. This causes piston rod 230 to move downward, which in turn moves lifting plate 240, lowering nitrogen tank 250 into installation box 200, thus completing the installation of nitrogen tank 250.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A nitrogen injection fire prevention apparatus for coal mines, characterized by: The device includes a protective box (100) and a mounting box (200). The mounting box (200) is located inside the protective box (100). A spring (110) is fixedly connected to the bottom of the inner cavity of the protective box (100). A damping rod (120) is sleeved inside the inner cavity of the spring (110). A mounting plate (130) is fixedly connected to the end of the spring (110). Airbags (140) are fixedly connected to the left and right side walls of the inner cavity of the protective box (100).

2. The nitrogen injection fire-preventing equipment for coal mine according to claim 1, characterized in that: A water tank (150) is fixedly connected to the upper side of the left side wall of the protective box (100), and a water inlet pipe (151) is fixedly connected to the top of the water tank (150).

3. The nitrogen injection fire-preventing equipment for coal mine according to claim 1, characterized in that: A booster pump (160) is fixedly connected to the lower side of the left side wall of the protective box (100), and the booster pump (160) is connected to the water tank (150) through a pipe.

4. A nitrogen injection fire prevention device for coal mines according to claim 1, characterized in that: Rubber pads (210) are fixedly connected to the left and right side walls of the inner cavity of the mounting box (200). A sleeve (220) is fixedly connected to the bottom of the inner cavity of the mounting box (200). The sleeve (220) is connected to the booster pump (160) through a pipe. A piston rod (230) is slidably connected to the inner cavity of the sleeve (220).

5. The nitrogen injection fire prevention equipment for coal mine according to claim 4, characterized in that: A lifting plate (240) is fixedly connected to the end of the piston rod (230). A nitrogen tank (250) is placed on the top of the lifting plate (240). An outlet pipe (260) is fixedly connected to the top of the nitrogen tank (250). A first valve (270) is fixedly connected to the right side of the outer wall of the outlet pipe (260) through a flange.

6. The nitrogen injection fire-preventing equipment for coal mine according to claim 4, characterized in that: A drain pipe (280) is fixedly connected to the lower side of the right side wall of the sleeve (220). The end of the drain pipe (280) passes through the mounting box (200) and extends to the lower side of the right side wall of the protective box (100). A second valve (290) is fixedly connected to the right side of the outer side wall of the drain pipe (280) through a flange.

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