Small-sized explosion-proof direct current motor

Abstract

The utility model discloses a small-sized explosion-proof direct-current motor, which comprises an explosion-proof base, a direct-current motor main body is arranged in the explosion-proof base, a driving shaft is fixedly connected onto the direct-current motor main body, and an explosion-proof mechanism is arranged on the explosion-proof base. The explosion-proof mechanism comprises an explosion-proof protective cover arranged above the explosion-proof base, the top of the explosion-proof protective cover is fixedly connected with a ventilation grid, one side of the explosion-proof protective cover is fixedly connected with a front-end protective cover, the driving shaft penetrates through the front-end protective cover in a sliding mode, the outer wall of the explosion-proof protective cover is fixedly sleeved with three strengthening sleeves, and the outer wall of the explosion-proof protective cover is fixedly connected with the ventilation grid. The utility model relates to the technical field of DC motors. According to the small anti-explosion direct current motor, the anti-explosion mechanism can wrap and protect the direct current motor in all directions through the anti-explosion base and the anti-explosion protective cover which are distributed on the upper portion and the lower portion of the direct current motor body, so that the anti-explosion capacity of the direct current motor body can be improved, the direct current motor body can be applied to the complex environment, and the working stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of DC motors, in particular to a small explosion-proof DC motor. Background Art

[0002] A DC motor is a rotating motor that can convert DC power into mechanical energy or mechanical energy into DC power. It is a motor that can realize the mutual conversion between DC power and mechanical energy. When it is operated as a motor, it is a DC motor that converts electrical energy into mechanical energy. When it is operated as a generator, it is a DC generator that converts mechanical energy into electrical energy. DC motors are widely used in various office equipment, mechanical equipment, water pumps, household appliances and other occasions. However, motors used in some special and dangerous occasions will have special requirements, such as gas stations, coal mines, etc. The motors used in these flammable and explosive occasions are called explosion-proof motors.

[0003] Announcement No. CN 206211726 U discloses an explosion-proof DC motor, including a DC motor, a front end cover for fixing the DC motor, and a rear end cover installed at the tail of the DC motor, the front end cover including a front end cover upper part and a front end cover lower part, wherein the front end cover upper part is provided with a motor mounting position that matches the output end of the DC motor, and the front end cover upper part is also provided with a front end cover baffle that matches the DC motor housing; the front end cover lower part of the practical new device separates the first chamber and the second chamber, and is sealed at the connection with a sealant, thereby avoiding contact between the inside and outside of the motor and avoiding explosion of the motor.

[0004] However, the DC motor has the following shortcomings: the device can provide explosion-proof protection for the cable connection at the bottom when in use, but because the DC motor housing is directly exposed to the outside, it cannot have explosion-proof capabilities in complex environments. This causes the components inside the DC motor to easily malfunction in unexpected situations, limiting the use effect.

[0005] Therefore, the utility model provides a small explosion-proof DC motor to solve the above problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a small explosion-proof DC motor to solve the above problems.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a small explosion-proof DC motor, including an explosion-proof base, a DC motor body is arranged in the explosion-proof base, a driving shaft is fixedly connected to the DC motor body, and an explosion-proof mechanism is arranged on the explosion-proof base;

[0008] The explosion-proof mechanism includes an explosion-proof shield arranged above the explosion-proof base, the top of the explosion-proof shield is fixedly connected to a ventilation grille, one side of the explosion-proof shield is fixedly connected to a front end protection cover, the drive shaft slides through the front end protection cover, the outer wall fixed sleeve of the explosion-proof shield is provided with three reinforcement sleeves, and the same connecting rod is fixedly connected between each two adjacent reinforcement sleeves, and three first screw holes are opened on the outer walls of both sides of the explosion-proof base, and two symmetrically distributed first bolts are threadedly sleeved on the three reinforcement sleeves, and multiple first bolts are respectively threadedly extended into the corresponding first screw holes.

[0009] Preferably, two pads are fixedly connected to the bottom of the explosion-proof base, and a plurality of second screw holes are provided on the tops of the two pads. Two mounting seats are fixedly connected to the bottom of the DC motor body, and a plurality of symmetrically distributed second bolts are threadedly connected to the two mounting seats, and the bottom ends of the second bolts are threadedly extended into the corresponding second screw holes. By using the provided pads, second screw holes, mounting seats and second bolts in combination, the DC motor body can be firmly installed in the explosion-proof base, which is convenient to use.

[0010] Preferably, a rear end protective cover is provided on one side of the explosion-proof shield, a cooling fan is fixedly connected inside the rear end protective cover, and a dust filter is fixedly connected to one side of the rear end protective cover. The rear end protective cover, the cooling fan and the dust filter are used in combination to cool down the heat emitted by the DC motor body during operation, preventing it from overheating and affecting its use.

[0011] Preferably, three threading holes are provided at the bottom of the explosion-proof base, an explosion-proof connecting seat is fixedly connected to the bottom of the explosion-proof base, three wire entry holes are provided at the top of the explosion-proof connecting seat, the three wire entry holes are respectively connected to the corresponding threading holes, and a protective tube is connected through one side of the explosion-proof connecting seat. The cables of the DC motor body can be safely protected by using the provided threading holes, explosion-proof connecting seat, wire entry holes and protective tube in combination.

[0012] Preferably, an explosion-proof layer is fixedly connected to the inner wall of the explosion-proof connecting seat, and thickened pads are fixedly connected to the inner walls on both sides of the explosion-proof layer. The explosion-proof capability of the explosion-proof connecting seat can be improved by using the explosion-proof layer and the thickened pads in combination, thereby providing an explosion-proof effect for the cables and components inside the explosion-proof connecting seat, making its operation more stable.

[0013] Preferably, a same partition is fixedly connected between the two thickened pads, and a circular hole is opened on the partition. The explosion-proof connecting seat can be divided into two parts by using the partition and the circular hole in combination without hindering the entry and exit of cables.

[0014] Preferably, a plurality of reinforcing ribs are fixedly connected inside the explosion-proof layer, and the provided reinforcing ribs can improve the overall structural strength of the explosion-proof layer to prevent deformation and damage thereof.

[0015] Preferably, the outer wall fixing sleeve of the explosion-proof connecting seat is provided with a mounting base, and a plurality of fixing holes are opened on the mounting base. The mounting base and the fixing holes can be used together to facilitate the installation of the explosion-proof connecting seat, so that its station is stable and convenient for work.

[0016] Beneficial Effects

[0017] The utility model provides a small explosion-proof DC motor. Compared with the prior art, it has the following beneficial effects:

[0018] (1) The small explosion-proof DC motor can be fully protected by an explosion-proof base and an explosion-proof shield distributed above and below the DC motor body through the explosion-proof mechanism, thereby improving the explosion-proof capability of the DC motor body, enabling it to be used in complex environments and improving working stability.

[0019] (2) The small explosion-proof DC motor can protect the installation cables and related components of the DC motor body through the explosion-proof connecting seat, thereby preventing the cable failure from affecting the working stability of the DC motor body, and achieving better use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the external structure of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the explosion-proof connecting seat in the utility model;

[0022] Figure 3 It is a schematic diagram of the relevant exploded structure of the explosion-proof mechanism in the utility model;

[0023] Figure 4 It is the relevant exploded assembly diagram of the rear end protection cover of the utility model.

[0024] In the figure: 1. explosion-proof base; 2. DC motor body; 3. drive shaft; 4. explosion-proof shield; 5. ventilation grille; 6. front end protection cover; 7. reinforcement sleeve; 8. connecting rod; 9. first screw hole; 10. first bolt; 11. pad; 12. second screw hole; 13. mounting base; 14. second bolt; 15. rear end protection cover; 16. cooling fan; 17. dust filter; 18. threading hole; 19. explosion-proof connecting base; 20. wire inlet hole; 21. protective tube; 22. explosion-proof layer; 23. thickened pad; 24. partition; 25. round hole; 26. reinforcing rib; 27. mounting base; 28. fixing hole. DETAILED DESCRIPTION

[0025] 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.

[0026] Embodiment 1:

[0027] See also Figure 1 and Figure 3 A small explosion-proof DC motor comprises an explosion-proof base 1, a DC motor body 2 is arranged in the explosion-proof base 1, a driving shaft 3 is fixedly connected to the DC motor body 2, and an explosion-proof mechanism is arranged on the explosion-proof base 1;

[0028] The explosion-proof mechanism includes an explosion-proof shield 4 arranged above the explosion-proof base 1, a ventilation grille 5 is fixedly connected to the top of the explosion-proof shield 4, a front end protection cover 6 is fixedly connected to one side of the explosion-proof shield 4, a driving shaft 3 slides through the front end protection cover 6, and the outer wall fixed sleeve of the explosion-proof shield 4 is provided with three reinforcement sleeves 7, and the same connecting rod 8 is fixedly connected between each two adjacent reinforcement sleeves 7. Three first screw holes 9 are provided on the outer walls of both sides of the explosion-proof base 1, and two symmetrically distributed first bolts 10 are threadedly sleeved on the three reinforcement sleeves 7, and multiple first bolts 10 are respectively threadedly extended into the corresponding first screw holes 9; two pads 11 are fixedly connected to the bottom of the explosion-proof base 1, and multiple second screw holes 12 are provided on the tops of the two pads 11, and two mounting seats 13 are fixedly connected to the bottom of the DC motor body 2, and multiple symmetrically distributed second bolts 14 are threadedly penetrated and connected on the two mounting seats 13, and the bottom ends of the second bolts 14 are threadedly extended into the corresponding second screw holes 12.

[0029] Embodiment 2:

[0030] See also Figures 1 to 4The present embodiment provides a technical solution based on the first embodiment: a rear end protection cover 15 is provided on one side of the explosion-proof shield 4, and the rear end protection cover 15 is connected to the explosion-proof shield 4 by screws, which is convenient for disassembly and assembly. A cooling fan 16 is fixedly connected inside the rear end protection cover 15, and a dust filter 17 is fixedly connected to one side of the rear end protection cover 15; three threading holes 18 are provided at the bottom of the explosion-proof base 1, and an explosion-proof connecting seat 19 is fixedly connected to the bottom of the explosion-proof base 1, and three wire inlet holes 20 are provided on the top of the explosion-proof connecting seat 19, and the three inlet holes 20 are provided on the bottom of the explosion-proof base 1. The wire holes 20 are respectively connected with the corresponding wire holes 18, and a protective tube 21 is connected through one side of the explosion-proof connecting seat 19; an explosion-proof layer 22 is fixedly connected to the inner wall of the explosion-proof connecting seat 19, and thickened pads 23 are fixedly connected to the inner walls on both sides of the explosion-proof layer 22; a same partition 24 is fixedly connected between the two thickened pads 23, and a circular hole 25 is opened on the partition 24; a plurality of reinforcing ribs 26 are fixedly connected inside the explosion-proof layer 22; a mounting base 27 is fixedly sleeved on the outer wall of the explosion-proof connecting seat 19, and a plurality of fixing holes 28 are opened on the mounting base 27.

[0031] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A small explosion-proof DC motor, comprising an explosion-proof base (1), characterized in that: A DC motor body (2) is arranged inside the explosion-proof base (1), a driving shaft (3) is fixedly connected to the DC motor body (2), and an explosion-proof mechanism is arranged on the explosion-proof base (1); The explosion-proof mechanism comprises an explosion-proof shield (4) arranged above the explosion-proof base (1), the top of the explosion-proof shield (4) is fixedly connected to a ventilation grille (5), one side of the explosion-proof shield (4) is fixedly connected to a front protective cover (6), the drive shaft (3) slides through the front protective cover (6), the outer wall fixed sleeve of the explosion-proof shield (4) is provided with three reinforcement sleeves (7), each adjacent two reinforcement sleeves (7) are fixedly connected with the same connecting rod (8), the outer walls of both sides of the explosion-proof base (1) are provided with three first screw holes (9), the three reinforcement sleeves (7) are threadedly sleeved with two symmetrically distributed first bolts (10), and the plurality of first bolts (10) are respectively threadedly extended into the corresponding first screw holes (9).

2. A small explosion-proof DC motor according to claim 1, characterized in that: The bottom of the explosion-proof base (1) is fixedly connected to two pads (11), and the tops of the two pads (11) are each provided with a plurality of second screw holes (12). The bottom of the DC motor body (2) is fixedly connected to two mounting seats (13), and the two mounting seats (13) are threadedly connected to a plurality of symmetrically distributed second bolts (14), and the bottom ends of the second bolts (14) are threadedly extended into corresponding second screw holes (12).

3. A small explosion-proof DC motor according to claim 1, characterized in that: A rear end protection cover (15) is provided on one side of the explosion-proof shield (4), a cooling fan (16) is fixedly connected inside the rear end protection cover (15), and a dust filter (17) is fixedly connected to one side of the rear end protection cover (15).

4. A small explosion-proof DC motor according to claim 1, characterized in that: The bottom of the explosion-proof base (1) is provided with three threading holes (18), the bottom of the explosion-proof base (1) is fixedly connected with an explosion-proof connecting seat (19), the top of the explosion-proof connecting seat (19) is provided with three wire entry holes (20), the three wire entry holes (20) are respectively connected with the corresponding threading holes (18), and a protective tube (21) is connected through one side of the explosion-proof connecting seat (19).

5. A small explosion-proof DC motor according to claim 4, characterized in that: An explosion-proof layer (22) is fixedly connected to the inner wall of the explosion-proof connection seat (19), and thickened pads (23) are fixedly connected to the inner walls on both sides of the explosion-proof layer (22).

6. A small explosion-proof DC motor according to claim 5, characterized in that: A same partition plate (24) is fixedly connected between the two thickened pads (23), and a circular hole (25) is provided on the partition plate (24).

7. A small explosion-proof DC motor according to claim 5, characterized in that: A plurality of reinforcing ribs (26) are fixedly connected inside the explosion-proof layer (22).

8. A small explosion-proof DC motor according to claim 4, characterized in that: The outer wall fixing sleeve of the explosion-proof connecting seat (19) is provided with a mounting base (27), and the mounting base (27) is provided with a plurality of fixing holes (28).

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