Mining anti-explosion electric heating fan

Abstract

The utility model relates to a mining anti-explosion electric heating fan, which comprises a base, a fan, an air duct, a box body and a mounting frame, the fan is fixedly mounted on the base; the air duct is fixedly mounted on the base, and the air inlet end of the air duct is connected with the fan; the box body is fixedly mounted on the base, and the side air inlet end of the box body is connected with the air duct; a mounting space is formed in the box body, a mounting cover plate is arranged at the top of the box body, a plurality of staggered mounting holes are distributed in the mounting cover plate, a plurality of U-shaped electric heating tubes are arranged in the mounting space, and two electric connecting rods of each U-shaped electric heating tube are fixedly mounted at two mounting holes in the mounting cover plate in a one-to-one correspondence manner. By adopting the U-shaped electric heating tube, circuits are distributed at the upper part of the box body, the wiring is regular, the installation times are reduced, and the disassembly, assembly and maintenance are convenient. The arrangement of the protective shell plays a role in protecting the electric connecting rod extending out of the box body and the cable connected with the electric connecting rod, and plays a role in positioning an external cable connecting line, thereby facilitating the disassembly, assembly and maintenance of a line.

Description

Technical Field

[0001] The utility model belongs to the technical field of air heating, and specifically relates to an explosion-proof electric heating fan for mining. Background Art

[0002] The temperature in the mine is low. In order to increase the temperature in the mine, electric heating fans are usually used to transport high-temperature air into the mine to increase the temperature in the mine. Ordinary electric heating fans use straight-rod electric heating tubes. Cables need to be connected at both ends of the straight-rod electric heating tubes, which requires the electric heating fans to be wired in multiple locations, making disassembly and maintenance inconvenient. At the same time, a large number of straight-rod electric heating tubes are required, and the disassembly and maintenance work is large. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a mining explosion-proof electric heating fan, which solves the technical problems of ordinary electric heating fans such as complex wiring, inconvenient disassembly and maintenance, etc.

[0004] In order to solve the above problems, the technical solution of the utility model is: a mining explosion-proof electric heating fan, comprising:

[0005] Base;

[0006] The fan is fixedly mounted on the base;

[0007] The air duct is fixedly mounted on the base, and the air inlet end of the air duct is connected to the fan;

[0008] The box body is fixedly installed on the base, and the side air inlet end of the box body is connected to the air duct; there is an installation space in the box body, and a mounting cover plate is arranged on the top of the box body, and a plurality of staggered mounting holes are distributed on the mounting cover plate. A plurality of U-shaped electric heating tubes are arranged in the installation space, and two electrical connecting rods of the U-shaped electric heating tube are fixedly installed one by one at two of the mounting holes on the mounting cover plate; a protective shell is fixedly arranged on the upper part of the mounting cover plate, and the electrical connecting rods of the U-shaped electric heating tube extend into the protective shell through the corresponding mounting holes, and a cable connection interface for connecting external cables is arranged on the side wall of the protective shell; the cable connection interface is electrically connected to the electrical connecting rod of the U-shaped electric heating tube through internal cables;

[0009] The installation frame is fixedly installed on the base, the air inlet end of the installation frame is connected to the air outlet end of the side of the box body, and the shutter is arranged in the installation frame.

[0010] Optionally, there are several cable connection interfaces on the protective shell, and each cable connection interface is connected to a part of the U-shaped electric heating tube to achieve independent control of the part of the U-shaped electric heating tube.

[0011] Optionally, several limit plates are fixedly arranged at the lower part of the box body, and the limit plates are aligned one by one with several rows of U-shaped electric heating tubes in the vertical direction. Several limit holes are opened on the limit plates, and each row of U-shaped electric heating tubes passes through the limit holes on the limit plate directly below.

[0012] Optionally, the shutter is equipped with a control switch for manual and / or electric control.

[0013] Optionally, the shutters have at least two groups.

[0014] Optionally, the angle between the connecting line of the two ends of the two electrical connecting rods on each U-shaped electric heating tube and the air flow direction in the box is an acute angle.

[0015] Optionally, the cable connection interface is opened on a side wall of the protective shell facing the fan.

[0016] Optionally, heat dissipation fins are distributed outside the U-shaped electric heating tube.

[0017] Optionally, a cable connection port is provided on the top of the fan.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model provides a U-shaped electric heating tube, and the two electric connecting rods of the U-shaped electric heating tube are both located at the upper part of the box body, which is convenient for wiring and neat. The U-shaped electric heating tube is equivalent to two straight-rod electric heating tubes, which reduces the number of connection points and is more convenient for disassembly and assembly. The provision of the protective shell protects the electric connecting rod extending from the upper part of the box body and the cables connected thereto. At the same time, a cable connection interface is provided on the protective shell to position the external cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an explosion-proof electric heating blower in an embodiment;

[0021] Figure 2 This is a schematic diagram of the installation of the blinds in the embodiment;

[0022] Figure 3 This is a schematic diagram of the interior of an explosion-proof electric heating blower in an embodiment;

[0023] Figure 4 This is a schematic diagram of the installation of the limit plate in the embodiment;

[0024] Figure 5 This is a plan view of installing the cover plate in the embodiment;

[0025] Figure 6 This is a schematic diagram of the structure of the protective shell in the embodiment;

[0026] Figure 7Schematic diagram of the structure of the U-shaped electric heating tube in the embodiment.

[0027] Figure numerals: 1. base; 2. fan; 21. cable connection port; 3. air duct; 4. box; 41. installation space; 42. installation cover; 43. installation hole; 44. protective shell; 45. cable connection interface; 5. installation frame; 51. shutter; 511. control switch; 6. U-shaped electric heating tube; 61. electrical connecting rod; 62. heat dissipation fin; 7. limit plate; 71. limit hole. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Example: Figure 1-Figure 7 As shown, the present embodiment provides an explosion-proof electric heating fan for mining, comprising a base 1, a fan 2, a wind tube 3, a box 4 and a mounting frame 5; the fan 2 is fixedly mounted on the base 1; the wind tube 3 is fixedly mounted on the base 1, and the air inlet end of the wind tube 3 is connected to the fan 2; the box 4 is fixedly mounted on the base 1, and the side air inlet end of the box 4 is connected to the wind tube 3; the box 4 has an installation space 41, a mounting cover plate 42 is arranged on the top of the box 4, and a plurality of staggered mounting holes 43 are distributed on the mounting cover plate 42, and a plurality of U-shaped electric heating tubes 6 are arranged in the installation space 41, and two electrical connections of the U-shaped electric heating tubes 6 are connected to each other. The connecting rods 61 are fixedly installed at two of the mounting holes 43 on the mounting cover 42 in a one-to-one correspondence; a protective shell 44 is fixedly arranged on the upper part of the mounting cover 42, and the electrical connecting rods 61 of the U-shaped electric heating tube 6 extend into the protective shell 44 through the one-to-one corresponding mounting holes 43, and a cable connection interface 45 for connecting an external cable is arranged on the side wall of the protective shell 44; the cable connection interface 45 is electrically connected to the electrical connecting rod 61 of the U-shaped electric heating tube 6 through an internal cable; a mounting frame 5 is fixedly installed on the base 1, and the air inlet end of the mounting frame 5 is connected to the air outlet end on the side of the box body 4, and a shutter 51 is arranged in the mounting frame 5.

[0030] Through the above-mentioned arrangement, by adopting the U-shaped electric heating tube 6, the circuit is distributed on the upper part of the box body 4, the wiring is regular, the number of installation times is reduced, and disassembly and maintenance are convenient. The setting of the protective shell 44 protects the electrical connection rod 61 extending outside the box body 4 and the cables connected thereto, and at the same time positions the external cable connection line, which is convenient for disassembly and maintenance of the circuit. The fan 2 is used to transport air, and the air enters the installation space 41 of the box body 4 through the air duct 3. The temperature of the air rises after contacting the U-shaped electric heating tube 6, and then the high-temperature air is discharged to the specified position from the shutter 51 opened at the installation frame 5, thereby realizing the transportation of high-temperature air.

[0031] Optionally, the diameter of the U-shaped electric heating tube 6 is larger than the diameter of the electric connecting rod 61. During installation, the electric connecting rod 61 is passed through the mounting hole 43 so that the end of the U-shaped electric heating tube 6 is abutted and clamped on the mounting cover 42, and then the electric connecting rod 61 above the mounting cover 42 is fixed by fasteners such as bolts. The structure is simple and easy to disassemble and assemble.

[0032] In the explosion-proof electric heating fan for mining of this embodiment, there are several cable connection interfaces 45 on the protective shell 44, and each cable connection interface 45 is connected to a part of the U-shaped electric heating tube 6 to realize the separate control of a part of the U-shaped electric heating tube 6. This arrangement facilitates the adjustment of the heating temperature to meet different usage requirements.

[0033] In a mining explosion-proof electric heating fan of this embodiment, a plurality of limit plates 7 are fixedly arranged at the lower part of the box body 4, and the plurality of limit plates 7 are aligned one by one with the plurality of rows of U-shaped electric heating tubes 6 in the vertical direction. The limit plates 7 are provided with a plurality of limit holes 71, and each row of U-shaped electric heating tubes 6 passes through the limit holes 71 on the limit plates 7 directly below one by one. In this way, the U-shaped electric heating tubes 6 pass through the limit holes 71 one by one, which plays a limiting role on the lower part of the U-shaped electric heating tubes 6, limits the swing amplitude of the lower part of the U-shaped electric heating tubes 6, avoids the risk of damage caused by excessive swing of the U-shaped electric heating tubes 6 due to excessive wind speed, and improves the service life.

[0034] In a mining explosion-proof electric heating fan of this embodiment, the shutter 51 is equipped with a manual and / or electric control switch 511. The control switch 511 is used to control the opening and closing of the shutter 51. It is set to be manually and electrically controllable, which is convenient for manual control of opening and closing on site, and also convenient for remote electric control of opening and closing of the shutter 51, and is easy to operate.

[0035] In the explosion-proof electric heating fan for mining of this embodiment, there are at least two groups of shutters 51. This arrangement facilitates opening one or more groups of shutters 51, thereby adjusting the air volume to meet various usage requirements.

[0036] In the explosion-proof electric heating fan for mining of this embodiment, the angle between the two ends of the two electric connecting rods 61 on each U-shaped electric heating tube 6 and the air flow direction in the box 4 is an acute angle. This arrangement increases the contact area between the air and the U-shaped electric heating tube 6, and the heating efficiency is high.

[0037] In the explosion-proof electric heating fan for mining of this embodiment, the cable connection interface 45 is provided on a side wall of the protective shell 44 facing the fan 2. With such arrangement, the appearance is more concise and beautiful when viewed from the front.

[0038] In a mining explosion-proof electric heating fan of this embodiment, the outside of the U-shaped electric heating tube 6 is provided with heat dissipation fins 62. This arrangement improves the heat dissipation effect of the U-shaped electric heating tube 6, increases the contact area with the air, and has a good heating effect on the air.

[0039] In a mining explosion-proof electric heating fan of this embodiment, a cable connection port 21 is arranged on the top of the fan 2. This arrangement does not take up space, has a simple structure, and is arranged at the top with the cable connection interface 45, which can be arranged at the top, so that the wiring can be overall, the wiring is regular, and it is convenient for disassembly and maintenance.

Claims

1. A mining explosion-proof electric heating fan, characterized in that: include: Base (1); A fan (2) is fixedly mounted on the base (1); The air duct (3) is fixedly mounted on the base (1), and the air inlet end of the air duct (3) is connected to the fan (2); The box body (4) is fixedly mounted on the base (1), and the side air inlet end of the box body (4) is connected to the air duct (3); the box body (4) has an installation space (41), a mounting cover plate (42) is arranged on the top of the box body (4), a plurality of staggered mounting holes (43) are distributed on the mounting cover plate (42), a plurality of U-shaped electric heating tubes (6) are arranged in the installation space (41), and two electrical connecting rods (61) of the U-shaped electric heating tubes (6) are fixedly mounted on the mounting cover plate in a one-to-one correspondence. (42) at two of the mounting holes (43); a protective shell (44) is fixedly arranged on the upper part of the mounting cover (42); the electrical connection rods (61) of the U-shaped electric heating tube (6) extend into the protective shell (44) through the corresponding mounting holes (43); a cable connection interface (45) for connecting an external cable is arranged on the side wall of the protective shell (44); the cable connection interface (45) is electrically connected to the electrical connection rod (61) of the U-shaped electric heating tube (6) through an internal cable; The mounting frame (5) is fixedly mounted on the base (1); the air inlet end of the mounting frame (5) is connected to the air outlet end of the side of the box body (4); and a shutter (51) is arranged in the mounting frame (5).

2. The explosion-proof electric heating fan for mining according to claim 1, characterized in that: There are a plurality of cable connection interfaces (45) on the protective shell (44), and each cable connection interface (45) is connected to a portion of the U-shaped electric heating tube (6) to achieve separate control of the portion of the U-shaped electric heating tube (6).

3. The explosion-proof electric heating fan for mining according to claim 1, characterized in that: A plurality of limiting plates (7) are fixedly arranged at the lower part of the box body (4); the plurality of limiting plates (7) are aligned one by one with the plurality of rows of U-shaped electric heating tubes (6) in the vertical direction; a plurality of limiting holes (71) are provided on the limiting plates (7); and the U-shaped electric heating tubes (6) in each row pass through the limiting holes (71) on the limiting plates (7) directly below in a corresponding manner.

4. The explosion-proof electric heating fan for mining according to claim 1, characterized in that: The shutter (51) is equipped with a control switch (511) which can be manually and / or electrically controlled.

5. The explosion-proof electric heating fan for mining according to claim 1, characterized in that: The shutters (51) have at least two groups.

6. The explosion-proof electric heating fan for mining according to claim 1, characterized in that: The angle between the connecting line of the two ends of the two electrical connecting rods (61) on each U-shaped electric heating tube (6) and the air flow direction in the box (4) is an acute angle.

7. The explosion-proof electric heating fan for mining according to claim 1, characterized in that: The cable connection interface (45) is provided on a side wall of the protective shell (44) facing the fan (2).

8. The explosion-proof electric heating fan for mining according to claim 1, characterized in that: Heat dissipation fins (62) are distributed outside the U-shaped electric heating tube (6).

9. The explosion-proof electric heating fan for mining according to claim 1, characterized in that: A cable connection port (21) is provided on the top of the fan (2).

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