Sealing structure of high-voltage dust explosion-proof motor

Abstract

This utility model discloses a sealing structure for a high-pressure dust explosion-proof motor, relating to the field of sealing structure technology. It includes: a base, on the upper surface of which a mounting seat and a sealing cover are respectively provided, and the explosion-proof motor body is fixedly mounted on the upper surface of the mounting seat; and a locking assembly for fixing the mounting seat and the sealing cover to the upper surface of the base. The locking assembly includes two symmetrically fixed insert plates on the lower surface of the mounting seat. The upper surface of the base is respectively provided with annular insert grooves adapted to the bottom end of the sealing cover, and two rectangular insert grooves corresponding to the two insert plates. The high-pressure dust explosion-proof motor sealing structure disclosed in this utility model, by setting the sealing cover and the locking assembly, enables the sealing structure to effectively fix the mounting seat and the sealing cover during actual installation, thereby allowing the explosion-proof motor body to be completely sealed from the indoor environment under the action of the sealing cover, achieving the purpose of effectively sealing the explosion-proof motor body.

Description

Technical Field

[0001] This utility model relates to the field of sealing structure technology, and in particular to a sealing structure for high-pressure dust explosion-proof motors. Background Technology

[0002] High-pressure dust explosion-proof motors are motors specifically designed for safe operation in environments containing explosive dust. Their core feature is a highly sealed casing, effectively preventing or reducing dust from entering the motor. Even if dust does enter, it will not reach a level that poses a flammability risk, thus ensuring that the motor will not cause an explosion of the surrounding explosive dust mixture during operation.

[0003] Currently available high-voltage dust explosion-proof motors cannot completely and effectively isolate dust during actual use. Dust can still enter the motor through gaps in the motor casing or ventilation openings, posing certain safety hazards. In view of this, this application proposes a sealing structure for high-voltage dust explosion-proof motors. Utility Model Content

[0004] This utility model discloses a high-pressure dust explosion-proof motor sealing structure, which aims to solve the technical problem mentioned in the background art of the inability to completely seal the motor from the indoor environment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The sealing structure for a high-pressure dust explosion-proof motor includes:

[0007] The base has a mounting seat and a sealing cover on its upper surface, and the explosion-proof motor body is fixed on the upper surface of the mounting seat.

[0008] A locking assembly is used to fix the mounting base and the sealing cover to the upper surface of the base. The locking assembly includes two plug-in plates symmetrically fixed to the lower surface of the mounting base. The upper surface of the base is provided with an annular plug-in groove adapted to the bottom end of the sealing cover, and two rectangular plug-in grooves corresponding to the two plug-in plates. The locking assembly also includes a rectangular groove opened on the upper surface of the base, and two symmetrical sliding plates slidably disposed on the inner wall of the rectangular groove. Two symmetrical locking pins are fixed on the surface of the sliding plates. The inner wall of the rectangular groove is provided with a through hole that penetrates the rectangular plug-in groove and extends to the inner wall of the annular plug-in groove. The surface of the plug-in plate and the inner wall of the sealing cover are respectively provided with locking holes and locking grooves adapted to the locking pins. The front of the base is provided with a rotating block for driving the two sliding plates to move simultaneously to both sides or to the middle.

[0009] In a preferred embodiment, the upper surface of the sealing cover is provided with an air inlet pipe and an air outlet pipe, and the other ends of the air inlet pipe and the air outlet pipe extend to the outside. The end of the air inlet pipe is provided with a cooling fan for blowing air into the interior of the sealing cover.

[0010] By installing air inlet and outlet pipes, the explosion-proof motor body can be effectively cooled.

[0011] In a preferred embodiment, the side of the sealing cover is provided with a rotating hole, and the output shaft of the explosion-proof motor body is rotatably connected to the inner wall of the rotating hole through a sealed bearing.

[0012] By providing a rotating hole, the output end of the explosion-proof motor body can be extended to the outside of the sealing cover.

[0013] In a preferred embodiment, the inner wall of the rectangular groove is rotatably provided with a bidirectional lead screw, and the surfaces of the two sliding plates are each provided with threaded holes that are threaded to the outer surface of the bidirectional lead screw.

[0014] By setting a bidirectional lead screw, the rotation of the bidirectional lead screw can drive two sliding plates to move simultaneously to the sides or towards the middle.

[0015] In a preferred embodiment, the inner wall of the rectangular groove is rotatably provided with a connecting shaft extending to the outer surface of the base, the rotating block is fixed at the end of the connecting shaft, and the other end of the connecting shaft and the surface of the bidirectional lead screw are both fixed with meshing bevel gears, and the bottom end of the sealing cover is provided with a notch corresponding to the connecting shaft.

[0016] By setting two bevel gears, the rotation of the rotating block can drive the bidirectional lead screw to rotate automatically.

[0017] In a preferred embodiment, the upper surface of the base is provided with a sealing assembly, the sealing assembly including an annular groove formed on the upper surface of the base, and an annular inflatable airbag fixed to the inner wall of the annular groove.

[0018] By incorporating a sealing component, the gap between the sealing cover and the base can be effectively sealed.

[0019] In a preferred embodiment, the inner wall of the sealing cover is fixed with a sealing ring corresponding to the annular inflatable airbag, and the upper surface of the annular inflatable airbag abuts against the lower surface of the sealing ring.

[0020] By setting a sealing ring, the annular inflatable airbag can press against the lower surface of the sealing ring after inflation, thus achieving an effective seal.

[0021] In a preferred embodiment, the inner wall of the rectangular groove is fixedly provided with four symmetrical inflatable airbag columns, and the pressing end of the inflatable airbag column is fixedly connected to the surface of the sliding plate. The surface of the inflatable airbag column is provided with a connecting pipe communicating with the annular expansion airbag, and the inner wall of the inflatable airbag column is fixedly provided with a return spring.

[0022] By setting an inflatable airbag column, the annular expansion airbag can be automatically expanded by the compression of the inflatable airbag column, and the setting of the return spring facilitates the quick return of the inflatable airbag column.

[0023] As can be seen from the above, the high-pressure dust explosion-proof motor sealing structure provided by this utility model has the following technical effects.

[0024] Firstly, by setting up a sealing cover and locking components, this utility model enables the sealing structure to effectively fix the mounting base and the sealing cover during actual installation, thereby allowing the explosion-proof motor body to be in a completely sealed state from the indoor environment under the action of the sealing cover, achieving the purpose of effectively sealing the explosion-proof motor body.

[0025] Secondly, by setting a sealing component, this utility model enables the top of the annular expansion airbag to press against the lower surface of the sealing ring during the simultaneous movement of the two sliding plates to both sides, thereby achieving an effective seal at the gap between the sealing cover and the base, preventing dust from entering the interior of the sealing cover, and further achieving the purpose of effectively sealing the explosion-proof motor body. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the high-pressure dust explosion-proof motor sealing structure proposed in this utility model.

[0027] Figure 2 This is a schematic diagram of the cross-sectional structure of the base of the high-pressure dust explosion-proof motor sealing structure proposed in this utility model.

[0028] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0029] Figure 4 This is a top-section diagram of the base of the high-pressure dust explosion-proof motor sealing structure proposed in this utility model.

[0030] Figure 5 This is a top view of the base of the high-pressure dust explosion-proof motor sealing structure proposed in this utility model.

[0031] In the attached image:

[0032] 100. Base;

[0033] 200. Mounting base;

[0034] 300. Sealing cover; 301. Air inlet duct; 302. Air outlet duct;

[0035] 400. Explosion-proof motor body; 401. Output shaft;

[0036] 500. Locking assembly; 501. Insertion plate; 502. Annular insertion slot; 503. Rectangular insertion slot; 504. Sliding plate; 505. Locking post; 506. Locking hole; 507. Locking groove; 508. Rotating block; 509. Double-acting lead screw; 5010. Connecting shaft; 5011. Bevel gear;

[0037] 600, Sealing assembly; 601, Annular inflatable airbag; 602, Sealing ring; 603, Inflatable airbag column; 604, Return spring. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0039] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0040] Reference Figures 1 to 5 The high-pressure dust explosion-proof motor sealing structure includes:

[0041] The base 100 has a mounting base 200 and a sealing cover 300 respectively on its upper surface, and the explosion-proof motor body 400 is fixed on the upper surface of the mounting base 200.

[0042] Reference Figure 2 In a preferred embodiment, the upper surface of the sealing cover 300 is provided with an air inlet pipe 301 and an air outlet pipe 302, and the other ends of the air inlet pipe 301 and the air outlet pipe 302 extend to the outside. The end of the air inlet pipe 301 is provided with a cooling fan for blowing air into the interior of the sealing cover 300.

[0043] Specifically, by setting up the air inlet pipe 301 and the air outlet pipe 302, the purpose of effectively dissipating heat from the explosion-proof motor body 400 can be achieved.

[0044] Reference Figure 2In a preferred embodiment, a rotating hole is provided on the side of the sealing cover 300, and the output shaft 401 of the explosion-proof motor body 400 is rotatably connected to the inner wall of the rotating hole through a sealed bearing.

[0045] Specifically, by providing a rotating hole, the output end of the explosion-proof motor body 400 can be extended to the outside of the sealing cover 300.

[0046] The locking assembly 500 is used to fix the mounting base 200 and the sealing cover 300 to the upper surface of the base 100. The locking assembly 500 includes two plug-in plates 501 symmetrically fixed to the lower surface of the mounting base 200. The upper surface of the base 100 is respectively provided with annular plug-in grooves 502 that are adapted to the bottom end of the sealing cover 300, and two rectangular plug-in grooves 503 corresponding to the two plug-in plates 501. The locking assembly 500 also includes a rectangular groove opened on the upper surface of the base 100, and a slidable groove in the rectangular groove. The inner wall of the groove has two symmetrical sliding plates 504. The surface of the sliding plates 504 is fixed with two symmetrical locking pins 505. The inner wall of the rectangular groove has a through hole that passes through the rectangular insertion groove 503 and extends to the inner wall of the annular insertion groove 502. The surface of the insertion plate 501 and the inner wall of the sealing cover 300 are respectively provided with locking holes 506 and locking grooves 507 that are adapted to the locking pins 505. The front of the base 100 is provided with a rotating block 508 for driving the two sliding plates 504 to move simultaneously to both sides or to the middle.

[0047] Reference Figure 4 In a preferred embodiment, a bidirectional lead screw 509 is rotatably provided on the inner wall of the rectangular groove, and threaded holes that are threaded to the outer surface of the bidirectional lead screw 509 are provided on the surfaces of the two sliding plates 504.

[0048] Specifically, by setting a bidirectional lead screw 509, the rotation of the bidirectional lead screw 509 can drive the two sliding plates 504 to move simultaneously to both sides or to the middle.

[0049] Reference Figure 4 In a preferred embodiment, the inner wall of the rectangular groove is rotatably provided with a connecting shaft 5010 extending to the outer surface of the base 100. The rotating block 508 is fixed to the end of the connecting shaft 5010, and the other end of the connecting shaft 5010 and the surface of the bidirectional lead screw 509 are both fixed with meshing bevel gears 5011. The bottom end of the sealing cover 300 is provided with a notch corresponding to the connecting shaft 5010.

[0050] Specifically, by setting two bevel gears 5011, the rotation of the rotating block 508 can drive the bidirectional lead screw 509 to rotate automatically.

[0051] In this invention, by setting up a sealing cover 300 and a locking assembly 500, the sealing structure allows for the following installation process: first, the explosion-proof motor body 400 is installed with the sealing cover 300; then, the explosion-proof motor body 400 is inserted into the rectangular insertion slot 503 on the base 100 via the insertion plate 501 on the mounting base 200; simultaneously, the sealing cover 300 is inserted into the annular insertion slot 502 on the base 100; then, the rotating block 508 is rotated, causing the connecting shaft 5010 to rotate. The rotation of the connecting shaft 5010... The two bevel gears 5011 drive the bidirectional lead screw 509 to rotate. The rotation of the bidirectional lead screw 509 drives the two sliding plates 504 to move to both sides at the same time, thereby driving the locking pin 505 to pass through the locking hole 506 on the plug plate 501 and insert into the locking groove 507 on the inner wall of the sealing cover 300, so as to effectively fix the mounting base 200 and the sealing cover 300. This allows the explosion-proof motor body 400 to be in a completely sealed state from the indoor environment under the action of the sealing cover 300, thus achieving the purpose of effectively sealing the explosion-proof motor body 400.

[0052] Reference Figure 3 and Figure 5 In a preferred embodiment, a sealing component 600 is provided on the upper surface of the base 100. The sealing component 600 includes an annular groove formed on the upper surface of the base 100 and an annular expansion airbag 601 fixed to the inner wall of the annular groove.

[0053] Specifically, by setting the sealing component 600, the gap between the sealing cover 300 and the base 100 can be effectively sealed.

[0054] Reference Figure 3 In a preferred embodiment, the inner wall of the sealing cover 300 is fixedly provided with a sealing ring 602 corresponding to the annular expansion airbag 601, and the upper surface of the annular expansion airbag 601 abuts against the lower surface of the sealing ring 602.

[0055] Specifically, by setting a sealing ring 602, after the annular expansion airbag 601 expands, it can abut against the lower surface of the sealing ring 602 to achieve effective sealing.

[0056] Reference Figure 3 In a preferred embodiment, four symmetrical inflatable airbag columns 603 are fixedly provided on the inner wall of the rectangular groove, and the pressing end of the inflatable airbag column 603 is fixedly connected to the surface of the sliding plate 504. The surface of the inflatable airbag column 603 is provided with a connecting pipe communicating with the annular expansion airbag 601, and a return spring 604 is fixedly provided on the inner wall of the inflatable airbag column 603.

[0057] Specifically, by setting the inflatable airbag column 603, the annular expansion airbag 601 can be automatically expanded by the compression of the inflatable airbag column 603, and the setting of the return spring 604 facilitates the rapid return of the inflatable airbag column 603.

[0058] In this invention, by setting a sealing component 600, the four inflatable airbag columns 603 can be squeezed separately as the two sliding plates 504 move to both sides simultaneously. This allows the gas inside the inflatable airbag columns 603 to enter the interior of the annular expansion airbag 601, causing the annular expansion airbag 601 to expand. As a result, the top of the annular expansion airbag 601 can press against the lower surface of the sealing ring 602, effectively sealing the gap between the sealing cover 300 and the base 100. This prevents dust from entering the interior of the sealing cover 300, thereby further achieving the purpose of effectively sealing the explosion-proof motor body 400.

[0059] Working principle: During actual installation, the explosion-proof motor body 400 and the sealing cover 300 are first installed. Then, the explosion-proof motor body 400 is inserted into the rectangular insertion slot 503 on the base 100 via the insertion plate 501 on the mounting base 200. Simultaneously, the sealing cover 300 is inserted into the annular insertion slot 502 on the base 100. Then, the rotating block 508 is rotated, causing the connecting shaft 5010 to rotate. The rotation of the connecting shaft 5010, under the action of two bevel gears 5011, drives the double-acting screw 509 to rotate. The rotation of the double-acting screw 509 causes the two sliding plates 504 to move simultaneously to both sides, thereby causing the locking pin 505 to pass through the locking hole 506 on the insertion plate 501 and insert into the locking groove 507 on the inner wall of the sealing cover 300, thus achieving the installation... The effective fixing of the base 200 and the sealing cover 300 allows the explosion-proof motor body 400 to be completely sealed from the indoor environment under the action of the sealing cover 300, achieving the purpose of effectively sealing the explosion-proof motor body 400. Moreover, as the two sliding plates 504 move to both sides simultaneously, they can compress the four inflatable airbag columns 603 respectively, allowing the gas inside the inflatable airbag columns 603 to enter the interior of the annular expansion airbag 601, causing the annular expansion airbag 601 to expand. This allows the top of the annular expansion airbag 601 to press against the lower surface of the sealing ring 602, achieving effective sealing of the gap between the sealing cover 300 and the base 100, preventing dust from entering the interior of the sealing cover 300, and further achieving the purpose of effectively sealing the explosion-proof motor body 400.

[0060] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A high-voltage dust explosion-proof motor sealing structure, characterized in that, include: The base (100) has a mounting seat (200) and a sealing cover (300) respectively on its upper surface, and the explosion-proof motor body (400) is fixed on the upper surface of the mounting seat (200); A locking assembly (500) is used to fix the mounting base (200) and the sealing cover (300) on the upper surface of the base (100). The locking assembly (500) includes two plug-in plates (501) symmetrically fixed on the lower surface of the mounting base (200). The upper surface of the base (100) is provided with annular plug-in grooves (502) adapted to the bottom end of the sealing cover (300) and two rectangular plug-in grooves (503) corresponding to the two plug-in plates (501). The locking assembly (500) also includes a rectangular groove on the upper surface of the base (100) and two symmetrical sliding plates (504) slidably disposed on the inner wall of the rectangular groove. Two symmetrical locking pins (505) are fixed on the surface of the sliding plate (504). The inner wall of the rectangular groove is provided with a through hole that penetrates the rectangular insertion groove (503) and extends to the inner wall of the annular insertion groove (502). The surface of the insertion plate (501) and the inner wall of the sealing cover (300) are respectively provided with locking holes (506) and locking grooves (507) that are adapted to the locking pins (505). The front of the base (100) is provided with a rotating block (508) for driving the two sliding plates (504) to move simultaneously to both sides or to the middle.

2. The high-voltage dust-protected explosion-proof motor seal structure according to claim 1, characterized in that, The upper surface of the sealing cover (300) is provided with an air inlet pipe (301) and an air outlet pipe (302), and the other ends of the air inlet pipe (301) and the air outlet pipe (302) extend to the outside. The end of the air inlet pipe (301) is provided with a cooling fan for blowing air into the interior of the sealing cover (300).

3. The high-voltage dust-protected explosion-proof motor seal structure according to claim 1, characterized in that, The sealing cover (300) has a rotating hole on its side, and the output shaft (401) of the explosion-proof motor body (400) is rotatably connected to the inner wall of the rotating hole through a sealed bearing.

4. The high-voltage dust-protected explosion-proof motor seal structure according to claim 1, characterized in that, The inner wall of the rectangular groove is rotatably provided with a bidirectional lead screw (509), and the surfaces of the two sliding plates (504) are provided with threaded holes that are threadedly connected to the outer surface of the bidirectional lead screw (509).

5. The high-voltage dust-protected explosion-proof motor seal structure according to claim 4, characterized in that, The inner wall of the rectangular groove is rotatably provided with a connecting shaft (5010) extending to the outer surface of the base (100). The rotating block (508) is fixed at the end of the connecting shaft (5010), and the other end of the connecting shaft (5010) and the surface of the bidirectional lead screw (509) are both fixed with meshing bevel gears (5011). The bottom end of the sealing cover (300) is provided with a notch corresponding to the connecting shaft (5010).

6. The high-pressure dust explosion-proof motor sealing structure according to claim 5, characterized in that, The upper surface of the base (100) is provided with a sealing assembly (600), the sealing assembly (600) includes an annular groove formed on the upper surface of the base (100) and an annular expansion airbag (601) fixed to the inner wall of the annular groove.

7. The high-voltage dust-protected explosion-proof motor seal structure according to claim 6, characterized in that, The inner wall of the sealing cover (300) is fixed with a sealing ring (602) corresponding to the annular inflatable airbag (601), and the upper surface of the annular inflatable airbag (601) abuts against the lower surface of the sealing ring (602).

8. The high-voltage dust-protected explosion-proof motor seal structure according to claim 7, characterized in that, The inner wall of the rectangular groove is fixedly provided with four symmetrical inflatable airbag columns (603), and the pressing end of the inflatable airbag column (603) is fixedly connected to the surface of the sliding plate (504). The surface of the inflatable airbag column (603) is provided with a connecting pipe that communicates with the annular expansion airbag (601), and the inner wall of the inflatable airbag column (603) is fixedly provided with a return spring (604).

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