Heating device of mining anti-explosion electric heating fan

Abstract

The utility model relates to a heating device of a mining explosion-proof electric heating fan. The heating device comprises a box body, a U-shaped electric heating tube and a protective shell, a mounting space is formed in the box body; a mounting cover plate is arranged at the top of the box body, and a plurality of mounting through holes are formed in the mounting cover plate in a staggered manner; an air inlet is formed in one side end of the box body, and an air outlet is formed in the other opposite side end of the box body; the U-shaped electric heating tubes are located in the installation space, and the two ends of each U-shaped electric heating tube are each provided with an electric connecting rod. Two electric connecting rods of the U-shaped electric heating tube are fixed at the two mounting through holes one by one; the protective shell is fixedly arranged at the upper part of the mounting cover plate; two electric connecting rods of the U-shaped electric heating tube extend into the protective shell through the two corresponding mounting through holes; the side wall of the protective shell is provided with a plurality of cable connecting interfaces, the cable connecting interfaces are used for being electrically connected with external cables, and each cable connecting interface is electrically connected with the connecting ends of a part of the U-shaped electric heating tubes through an internal cable. Installation and maintenance are convenient, wiring is regular, and dismounting and maintenance are convenient.

Description

Technical Field

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

[0002] The temperature in the mine is relatively low, and electric heating fans are usually used to heat the outside air and transport it into the mine, thereby increasing the temperature in the mine. The electric heating tubes in ordinary electric heating fans are straight rods, and cables need to be connected at both ends, resulting in complicated wiring and inconvenient disassembly and maintenance. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a heating device for an explosion-proof electric hot air blower for mining, which solves the technical problems of the electric heater of the ordinary electric hot air blower, such as complicated wiring, inconvenient disassembly and maintenance, etc.

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

[0005] The box body has an installation space inside the box body; the top of the box body has an installation cover plate, and the installation cover plate is provided with a plurality of staggered installation through holes; one side end of the box body is provided with an air inlet, and the other side end of the box body is provided with an air outlet;

[0006] There are several U-shaped electric heating tubes located in the installation space, and electric connecting rods are provided at both ends of the U-shaped electric heating tubes;

[0007] Two electrical connecting rods of the U-shaped electric heating tube are fixed one by one at two installation holes;

[0008] The protective shell is fixedly arranged on the upper part of the mounting cover plate, and the two electrical connecting rods of the U-shaped electric heating tube extend into the protective shell through the corresponding two mounting through-holes; a plurality of cable connection interfaces are arranged on the side wall of the protective shell, and the cable connection interfaces are used for electrically connecting external cables, and each cable connection interface is electrically connected to the connecting end of a part of the U-shaped electric heating tube through an internal cable.

[0009] Optionally, several limit plates are fixedly arranged at the lower part of the installation space in the box body, and the several 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 in the horizontal direction, and the bottom of each row of U-shaped electric heating tubes passes through the several limit holes on the limit plates one by one.

[0010] Optionally, both ends of the limiting plate are fixed to the inner wall of the box body by welding.

[0011] Optionally, the diameter of the U-shaped electric heating tube is larger than the diameter of the electric connecting rod, the diameter of the electric connecting rod passes through the through hole, the end of the U-shaped electric heating tube is abutted and engaged with the mounting cover, and the electric connecting rod is fixed to the mounting cover by bolts.

[0012] Optionally, the angle between the two ends of the two electrical connecting rods on each U-shaped electric heating tube and the air flow direction in the installation space is an acute angle.

[0013] Optionally, heat dissipation fins are provided on the outer surface of the U-shaped electric heating tube.

[0014] Optionally, the mounting cover is fixedly mounted on the upper end of the box body by bolts.

[0015] Optionally, the protective shell is fixedly mounted on the upper part of the mounting cover plate by means of bolts.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model distributes a plurality of U-shaped electric heating tubes in a staggered manner in a box body, and the electric connecting rods of the U-shaped electric heating tubes are located at the upper part, and the wiring is regular, which is convenient for disassembly and maintenance. The air passing through the box body is heated by the U-shaped electric heating tubes, and the contact area is large and the heating efficiency is high. By setting a protective shell, the electric connecting rods of the U-shaped electric heating tubes and the cables connected thereto are protected, and the cables connected to the outside are positioned at the same time. A plurality of cables can be installed, and each cable is electrically connected to a part of the U-shaped electric heating tubes, so as to realize the separate control of a part of the U-shaped electric heating tubes, facilitate the adjustment of the heating temperature, and adapt to different usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the heating device in the embodiment;

[0019] Figure 2 This is a schematic diagram of the structure of the protective shell in the embodiment;

[0020] Figure 3 This is a schematic diagram of the installation of the limit plate in the embodiment;

[0021] Figure 4 It is a schematic diagram of the structure of a U-shaped electric heating tube in the embodiment;

[0022] Figure 5 It is a plan view of installing the cover plate in the embodiment.

[0023] Figure numerals: 1. Box body; 11. Installation space; 12. Installation cover; 121. Installation perforation; 13. Air inlet; 14. Air outlet; 2. U-shaped electric heating tube; 21. Electric connecting rod; 22. Heat dissipation fin; 3. Protective shell; 31. Cable connection interface; 4. Limit plate; 41. Limit hole. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Example: Figure 1-Figure 5 As shown, the present embodiment provides a heating device for an explosion-proof electric heating fan for mining, comprising a box body 1, a U-shaped electric heating tube 2 and a protective shell 3; the box body 1 has an installation space 11; the top of the box body 1 has an installation cover plate 12, and a plurality of staggered installation through holes 121 are provided on the installation cover plate 12; an air inlet 13 is provided at one side end of the box body 1, and an air outlet 14 is provided at the other side end of the box body 1; there are a plurality of U-shaped electric heating tubes 2, which are located in the installation space 11, and electrical connecting rods are provided at both ends of the U-shaped electric heating tubes 2. 21; the two electrical connecting rods 21 of the U-shaped electric heating tube 2 are fixed one by one at the two mounting through holes 121; the protective shell 3 is fixedly arranged on the upper part of the mounting cover plate 12, and the two electrical connecting rods 21 of the U-shaped electric heating tube 2 extend into the protective shell 3 through the corresponding two mounting through holes 121; a plurality of cable connection interfaces 31 are arranged on the side wall of the protective shell 3, and the cable connection interfaces 31 are used to electrically connect external cables, and each cable connection interface 31 is electrically connected to a connection end of a part of the U-shaped electric heating tube 2 through an internal cable.

[0026] Through the above arrangement, a plurality of U-shaped electric heating tubes 2 are arranged in the box 1, and both ends of the U-shaped electric heating tubes 2 are fixed on the installation cover 12 on the upper part of the box 1, which is convenient for installation and maintenance. The setting of the protective shell 3 protects the upper electrical connection rod 21 of the U-shaped electric heating tube 2 and the cables connected thereto. The plurality of cable connection interfaces 31 arranged on the protective shell 3 are used to connect a plurality of groups of cable connection lines, which is convenient for controlling the multiple groups of U-shaped electric heating tubes 2 in the box 1 separately, thereby facilitating the adjustment of the heating temperature, wherein each group of U-shaped electric heating tubes 2 has a plurality of tubes. The wiring is regular, and it is convenient for disassembly and maintenance.

[0027] In the heating device of a mining explosion-proof electric heating fan of this embodiment, a plurality of limit plates 4 are fixedly arranged at the lower part of the installation space 11 in the box body 1, and the plurality of limit plates 4 are aligned one by one with the plurality of rows of U-shaped electric heating tubes 2 in the vertical direction, and a plurality of limit holes 41 are provided on the limit plates 4 in the horizontal direction, and the bottom of each row of U-shaped electric heating tubes 2 is correspondingly penetrated through a plurality of limit holes 41 on a limit plate 4. Such a setting has a simple structure, plays a positioning role for both the upper and lower parts of the U-shaped electric heating tubes 2, avoids the risk of swing damage to the electric heating tubes due to high wind speed in the box body 1, and improves the service life.

[0028] In the heating device of a mining explosion-proof electric hot air blower of this embodiment, both ends of the limit plate 4 are welded and fixed to the inner wall of the box body 1. Such an arrangement has a simple structure, stable installation, convenient processing and low cost.

[0029] In the heating device of a mining explosion-proof electric heating fan of this embodiment, the diameter of the U-shaped electric heating tube 2 is larger than the diameter of the electric connecting rod 21, the diameter of the electric connecting rod 21 passes through the through hole, the end of the U-shaped electric heating tube 2 is abutted and clamped with the mounting cover plate 12, and the electric connecting rod 21 is fixed to the mounting cover plate 12 by bolts. In this way, the U-shaped electric heating tube 2 is stably connected, the structure is simple, and it is convenient to disassemble and assemble.

[0030] In the heating device of a mining explosion-proof electric heating fan of this embodiment, the angle between the two ends of the two electrical connecting rods 21 on each U-shaped electric heating tube 2 and the air flow direction in the installation space 11 is an acute angle. This arrangement increases the contact area between the electric heating tube and the air, and the heating effect is good.

[0031] In the heating device of a mining explosion-proof electric heating fan of this embodiment, the outer surface of the U-shaped electric heating tube 2 is provided with a heat dissipation fin 22. Such a configuration improves the heat dissipation effect of the U-shaped electric heating tube 2, thereby improving the heating effect on the air.

[0032] In the heating device of a mining explosion-proof electric hot air blower of this embodiment, the mounting cover plate 12 is fixedly mounted on the upper end of the box body 1 by bolts. In the heating device of a mining explosion-proof electric hot air blower of this embodiment, the protective shell 3 is fixedly mounted on the upper part of the mounting cover plate 12 by bolts. This arrangement has a simple structure, convenient disassembly and assembly, stable installation, and low cost.

Claims

1. A heating device for an explosion-proof electric heating fan for mining, characterized in that: include: A box body (1), wherein the box body (1) has an installation space (11); a top of the box body (1) has an installation cover plate (12), and the installation cover plate (12) is provided with a plurality of staggered installation through holes (121); an air inlet (13) is provided at one side end of the box body (1), and an air outlet (14) is provided at the other side end of the box body (1); A plurality of U-shaped electric heating tubes (2) are located in the installation space (11), and electric connecting rods (21) are provided at both ends of the U-shaped electric heating tube (2); the two electric connecting rods (21) of the U-shaped electric heating tube (2) are fixed one by one at the two installation through holes (121); The protective shell (3) is fixedly arranged on the upper part of the installation cover plate (12), and the two electrical connection rods (21) of the U-shaped electric heating tube (2) extend into the protective shell (3) through the corresponding two installation through holes (121); a plurality of cable connection interfaces (31) are arranged on the side wall of the protective shell (3), and the cable connection interfaces (31) are used for electrically connecting external cables, and each cable connection interface (31) is electrically connected to the connection end of a part of the U-shaped electric heating tube (2) through an internal cable.

2. The heating device of a mining explosion-proof electric hot air blower according to claim 1, characterized in that: A plurality of limit plates (4) are fixedly arranged at the lower part of the installation space (11) in the box body (1); the plurality of limit plates (4) are aligned one by one with the plurality of rows of U-shaped electric heating tubes (2) in the vertical direction; a plurality of limit holes (41) are provided on the limit plates (4) in the horizontal direction; and the bottoms of the U-shaped electric heating tubes (2) in each row are passed through the plurality of limit holes (41) on the limit plates (4) in a one-to-one correspondence.

3. The heating device of a mining explosion-proof electric hot air blower according to claim 2 is characterized in that: The two ends of the limiting plate (4) are fixed to the inner wall of the box body (1) by welding.

4. The heating device of a mining explosion-proof electric hot air blower according to claim 1, characterized in that: The diameter of the U-shaped electric heating tube (2) is greater than the diameter of the electric connecting rod (21), the diameter of the electric connecting rod (21) passes through the through hole, the end of the U-shaped electric heating tube (2) is abutted and clamped with the mounting cover plate (12), and the electric connecting rod (21) is fixed to the mounting cover plate (12) by bolts.

5. The heating device of a mining explosion-proof electric hot air blower according to claim 1, characterized in that: The angle between the connection between the two ends of the two electrical connecting rods (21) on each U-shaped electric heating tube (2) and the air flow direction in the installation space (11) is an acute angle.

6. The heating device of a mining explosion-proof electric hot air blower according to claim 1, characterized in that: Heat dissipation fins (22) are arranged on the outer surface of the U-shaped electric heating tube (2).

7. The heating device of a mining explosion-proof electric hot air blower according to claim 1, characterized in that: The mounting cover plate (12) is fixedly mounted on the upper end of the box body (1) by means of bolts.

8. The heating device of a mining explosion-proof electric hot air blower according to claim 1, characterized in that: The protective shell (3) is fixedly mounted on the upper part of the mounting cover plate (12) by means of bolts.

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