Condensate water discharging device for explosion-proof motor

Abstract

The utility model relates to the technical field of explosion-proof motors, and discloses a condensate water discharging device for an explosion-proof motor. The mounting seat is arranged at the bottom position of the machine shell; the guide pipe comprises a first communicating pipe and a second communicating pipe which are connected end to end, the inlet end of the first communicating pipe communicates with the interior of the machine shell through the mounting base, the first communicating pipe is arranged to be a vertical U-shaped pipe, and the inlet end of the first communicating pipe is higher than the outlet end of the first communicating pipe; the outlet end of the second communicating pipe is located at the position close to a cooling fan of the explosion-proof motor, and a liquid drainage nozzle is arranged at the bottom of the pipe wall of the second communicating pipe. The explosion-proof motor shell has the effect of improving the convenience of discharging condensate water gathered in the explosion-proof motor shell.

Description

Technical Field

[0001] The present application relates to the technical field of explosion-proof motors, and in particular to a condensate discharge device for explosion-proof motors. Background Art

[0002] Explosion-proof motors are motors that can be used in flammable and explosive places. They are isolated or do not generate sparks during operation. They are mainly used in coal mining, oil and gas, petrochemical and chemical industries. In addition, they are also widely used in textile, metallurgy, city gas, transportation, grain and oil processing, papermaking, medicine and other departments.

[0003] When the explosion-proof motor is working, the temperature inside the explosion-proof motor will gradually increase. In order to reduce the working temperature of the explosion-proof motor, a cooling fan is generally placed at the tail of the explosion-proof motor to dissipate heat and cool the explosion-proof motor. However, when the explosion-proof motor works for a long time, the temperature inside the explosion-proof motor is still relatively high, resulting in a large temperature difference between the internal temperature of the explosion-proof motor and the outside of the explosion-proof motor.

[0004] When an explosion-proof motor stops working for a long time in a humid and low-temperature environment, the temperature drop rate of the explosion-proof motor housing will be relatively large, and condensation is likely to occur inside the housing. The condensed water is likely to gather inside the explosion-proof motor housing.

[0005] When the explosion-proof motor starts working again and the temperature rises, the condensed water gathered inside the explosion-proof motor is likely to vaporize into water vapor again. When the internal structure of the explosion-proof motor works in a steam environment for a long time, the service life of the explosion-proof motor is likely to be reduced. Utility Model Content

[0006] In order to improve the convenience of discharging condensed water gathered inside the casing of an explosion-proof motor, the present application provides a condensed water discharge device for an explosion-proof motor.

[0007] The present application provides a condensate discharge device for explosion-proof motors using the following technical solutions:

[0008] A condensate discharge device for an explosion-proof motor, comprising:

[0009] chassis;

[0010] A mounting seat, the mounting seat is installed at the bottom of the housing;

[0011] The guide pipe comprises a first connecting pipe and a second connecting pipe connected end to end, the inlet end of the first connecting pipe is connected to the inside of the casing through the mounting seat, the first connecting pipe is arranged as a vertical U-shaped pipe, and the inlet end of the first connecting pipe is higher than the outlet end of the first connecting pipe, the outlet end of the second connecting pipe is located near the cooling fan of the explosion-proof motor, and a drain nozzle is installed at the bottom of the pipe wall of the second connecting pipe.

[0012] Optionally, the mounting base includes a connecting tube passing through the casing and a mounting plate installed at one end of the connecting tube, the connecting tube is connected to the casing via a connecting piece, the mounting plate is located inside the casing, the connecting tube is located on a side wall inside the casing and is provided with a liquid inlet, the outlet end of the connecting tube is connected to the inlet end of the first connecting tube.

[0013] Optionally, a plurality of outlets are provided on the mounting plate.

[0014] Optionally, the connecting member includes a connecting plate mounted on the outer wall of the connecting pipe and a clamping rod spirally penetrated through the connecting plate, and one end of the clamping rod abuts against the outer wall of the casing.

[0015] Optionally, an elastic pad is provided on the side of the mounting plate close to the inner wall of the casing.

[0016] Optionally, the liquid discharge nozzle includes a liquid discharge pipe mounted on the second connecting pipe, a mounting frame mounted on the liquid discharge pipe, and a sealing sheet slidably mounted on the mounting frame.

[0017] Optionally, the mounting frame includes a mounting ring mounted on the drain pipe and a plurality of guide rods with one end mounted on the mounting ring, and the guide rods slide through the sealing sheet.

[0018] Optionally, the inner diameter of the drain pipe gradually decreases from being close to the second connecting pipe to being far away from the second connecting pipe.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. After the explosion-proof motor stops running, the condensed water condensed on the inner wall of the shell enters the connecting pipe from the liquid inlet on the connecting pipe, and flows from the connecting pipe to the first connecting pipe. As the condensed water inside the first connecting pipe gradually increases, the condensed water inside the first connecting pipe gradually flows to the second connecting pipe and flows out from the drain nozzle on the second connecting pipe, thereby reducing the content of condensed water gathered inside the explosion-proof motor.

[0021] 2. When insects or other impurities outside the explosion-proof motor enter the second connecting pipe and the first connecting pipe from the drain nozzle, the condensed water gathered inside the first connecting pipe blocks the insects or other impurities, thereby facilitating the discharge of condensed water from the explosion-proof motor and reducing the possibility of insects or other impurities from the outside entering the explosion-proof motor and affecting the operation of the explosion-proof motor.

[0022] 3. When the cooling fan of the explosion-proof motor is working, since the outlet end of the second connecting pipe is close to the position of the cooling fan, a negative pressure is formed at the outlet end of the second connecting pipe, and the condensed water gathered in the first connecting pipe and the steam inside the explosion-proof motor are sucked out, thereby reducing the condensed water content inside the explosion-proof motor. At the same time, the hot air inside the explosion-proof motor is extracted, further improving the heat dissipation and cooling effect of the explosion-proof motor.

[0023] 4. After the explosion-proof motor stops working, when the condensed water flows from the first connecting pipe to the second connecting pipe into the drain nozzle, the sealing piece moves toward the outlet end of the drain pipe under the squeeze of the condensed water, so as to facilitate the discharge of the condensed water. When the explosion-proof motor is working, the airflow driven by the cooling fan forms a negative pressure at the discharge end of the drain pipe. Under the action of the negative pressure, the sealing piece moves toward the outlet end of the drain pipe and blocks the outlet end of the drain pipe, reducing the possibility of external impurities entering the second connecting pipe from the drain pipe. At the same time, after the sealing piece seals the outlet end, the flow speed of the gas inside the first connecting pipe is increased, which is convenient for sucking out the airflow gathered inside the first connecting pipe, and further improves the heat dissipation effect of the explosion-proof motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0025] Figure 2 It is a schematic diagram showing the positional relationship between the mounting seat and the guide tube in the embodiment of the present application.

[0026] Figure 3 It is a schematic diagram of the mounting seat structure in the embodiment of the present application.

[0027] Figure 4 It is a schematic diagram of the guide tube structure in the embodiment of the present application.

[0028] Description of reference numerals:

[0029] 1. Casing; 2. Mounting seat; 21. Connecting pipe; 211. Liquid inlet; 22. Mounting plate; 221. Discharge port; 222. Elastic pad; 23. Connecting piece; 231. Connecting plate; 232. Clamping rod; 3. Guide pipe; 31. First connecting pipe; 32. Second connecting pipe; 33. Discharge nozzle; 331. Discharge pipe; 332. Mounting frame; 3321. Mounting ring; 3322. Guide rod; 333. Sealing sheet. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-Figure 4 This application is described in further detail.

[0031] The embodiment of the present application discloses a condensate discharge device for an explosion-proof motor.

[0032] A condensate discharge device for an explosion-proof motor comprises a housing 1, a mounting seat 2 and a guide pipe 3. The explosion-proof motor dissipates heat from the explosion-proof motor through a cooling fan. A drain port is provided at the bottom of the housing 1, the mounting seat 2 is mounted at the bottom of the inner wall of the housing 1, one end of the guide pipe 3 is connected to the inside of the housing 1 through the mounting seat 2, and the other end of the guide pipe 3 is mounted near the cooling fan.

[0033] When the explosion-proof motor stops working, the condensed water inside the housing 1 of the explosion-proof motor is discharged from the housing 1 of the explosion-proof motor through the guide pipe 3, reducing the possibility of the condensed water gathering inside the housing 1 of the explosion-proof motor. When the explosion-proof motor is working, the airflow driven by the cooling fan of the explosion-proof motor dissipates heat and cools the inside of the housing 1 of the explosion-proof motor, further reducing the heat dissipation effect of the explosion-proof motor.

[0034] The mounting base 2 includes a connecting pipe 21 and a mounting plate 22. A drain port is provided at the bottom of the housing 1, and the connecting pipe 21 seals and penetrates the drain port. A liquid inlet 211 is provided on the side wall of the connecting pipe 21 located inside the housing 1, and condensed water on the inner wall of the housing 1 flows into the interior of the connecting pipe 21 from the liquid inlet 211 on the side wall of the connecting pipe 21.

[0035] The mounting plate 22 is located inside the housing 1 and is arranged in an arc shape. The arc center of the mounting plate 22 is located on a side of the mounting plate 22 close to the connecting pipe 21 , and the mounting plate 22 and the connecting pipe 21 are fixedly connected.

[0036] The connecting pipe 21 is connected to the housing 1 through a connecting member 23, and the connecting member 23 includes a connecting plate 231 and a tightening rod 232. The connecting plate 231 is fixedly mounted on the outer side wall of the connecting pipe 21, and the tightening rod 232 is spirally penetrated through the connecting plate 231.

[0037] When the connecting tube 21 is fixedly installed on the casing 1, the clamping rod 232 is rotated and the end of the clamping rod 232 is made to contact with the outer wall of the casing 1. During the rotation of the clamping rod 232, the clamping rod 232 drives the connecting tube 21 to move at the discharge port through the connecting plate 231. The connecting tube 21 drives the mounting plate 22 to move inside the casing 1 and presses the mounting plate 22 against the inner wall of the casing 1. In order to reduce the possibility of damage to the mounting plate 22 and the inside of the casing 1, an elastic pad 222 is bonded to the side of the mounting plate 22 close to the connecting tube 21, and the mounting plate 22 and the casing 1 are protected by the elastic pad 222.

[0038] At the same time, in order to facilitate the condensed water inside the housing 1 to flow into the liquid inlet 211 of the connecting pipe 21 , a plurality of discharge ports 221 for the condensed water to flow into the liquid inlet 211 are opened on the side wall of the mounting plate 22 .

[0039] The guide pipe 3 includes a first connecting pipe 31 and a second connecting pipe 32. The first connecting pipe 31 is a U-shaped pipe. The first connecting pipe 31 is vertically arranged, and the inlet end of the first connecting pipe 31 is higher than the outlet end of the first connecting pipe 31. The inlet end of the first connecting pipe 31 is connected to the outlet end of the connecting pipe 21.

[0040] The inlet end of the second connecting pipe 32 is connected to the outlet end of the first connecting pipe 31, and the outlet end of the second connecting pipe 32 is fixedly installed near the housing 1 and the cooling fan. A liquid discharge nozzle 33 is installed at the bottom of the pipe wall of the second connecting pipe 32, and the inner wall of the second connecting pipe 32 is inclined toward the direction close to the liquid discharge nozzle 33.

[0041] The discharge nozzle 33 includes a discharge pipe 331, a mounting frame 332 and a sealing sheet 333. The discharge pipe 331 is fixedly mounted on the second connecting pipe 32 and is connected to the inside of the second connecting pipe 32. The inner diameter of the discharge pipe 331 gradually decreases from the direction close to the second connecting pipe 32 to the direction away from the second connecting pipe 32.

[0042] The mounting frame 332 is mounted on the outer wall of the drain pipe 331, and includes a mounting ring 3321 mounted on the outer wall of the drain pipe 331 and a plurality of guide rods 3322 fixedly mounted on the mounting ring 3321, and the plurality of guide rods 3322 are evenly distributed along the circumference of the axis of the mounting ring 3321. The sealing sheet 333 is located near the outlet end of the drain pipe 331, and the plurality of guide rods 3322 are all slidably penetrated by the sealing sheet 333.

[0043] The implementation principle of a condensate discharge device for an explosion-proof motor in an embodiment of the present application is as follows: after the explosion-proof motor stops running, the condensate condensed on the inner wall of the casing 1 flows into the liquid inlet 211 from the discharge port 221 on the mounting plate 22, and flows from the connecting pipe 21 to the first connecting pipe 31. As the condensate inside the first connecting pipe 31 gradually increases, the condensate inside the first connecting pipe 31 gradually flows to the second connecting pipe 32. When the condensate flows from the second connecting pipe 32 into the discharge nozzle 33, the sealing sheet 333 moves toward the direction away from the outlet end of the discharge pipe 331 under the squeezing action of the condensate, so as to facilitate the discharge of the condensate. During the movement of the sealing sheet 333, the sealing sheet 333 is guided by the guide rod 3322.

[0044] When the cooling fan of the explosion-proof motor is working, since the outlet end of the second connecting pipe 32 is close to the position of the cooling fan, negative pressure is formed at the outlet end of the second connecting pipe 32. At this time, since condensed water gathers inside the first connecting pipe 31, the airflow caused by the cooling fan forms a negative pressure at the outlet end of the drain pipe 331, causing the sealing sheet 333 to slide on the guide rod 3322, so that the sealing sheet 333 moves toward the direction close to the outlet end of the drain pipe 331, and the sealing sheet 333 blocks the outlet end of the drain pipe 331, thereby reducing the possibility of external impurities entering the second connecting pipe 32 from the drain pipe 331. At this time, since the sealing sheet 333 blocks the outlet end of the drain pipe 331, the negative pressure inside the first connecting tube 31 acts on the condensed water inside the first connecting tube 31, thereby facilitating the discharge of the condensed water inside the first connecting tube 31. After the condensed water inside the first connecting tube 31 is discharged, the gas inside the explosion-proof motor continues to be sucked out, thereby reducing the impact of water vapor inside the explosion-proof motor on the internal parts of the explosion-proof motor, and at the same time, also improving the heat dissipation efficiency of the explosion-proof motor.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A condensate discharge device for explosion-proof motors, characterized in that: include; Housing (1); A mounting seat (2), the mounting seat (2) being mounted at the bottom of the housing (1); A guide pipe (3), the guide pipe (3) comprising a first connecting pipe (31) and a second connecting pipe (32) connected end to end, the inlet end of the first connecting pipe (31) being connected to the interior of the housing (1) through the mounting seat (2), the first connecting pipe (31) being arranged in a vertical U-shaped pipe, and the inlet end of the first connecting pipe (31) being higher than the outlet end of the first connecting pipe (31), the outlet end of the second connecting pipe (32) being located near a cooling fan of the explosion-proof motor, and a drain nozzle (33) being arranged at the bottom of the pipe wall of the second connecting pipe (32).

2. The condensate discharge device for explosion-proof motor according to claim 1, characterized in that: The mounting seat (2) comprises a connecting pipe (21) penetrating the housing (1) and a mounting plate (22) mounted on one end of the connecting pipe (21); the connecting pipe (21) is connected to the housing (1) via a connecting piece (23); the mounting plate (22) is located inside the housing (1); a liquid inlet (211) is provided on a side wall of the connecting pipe (21) located inside the housing (1); the outlet end of the connecting pipe (21) is in communication with the inlet end of the first connecting pipe (31).

3. The condensate discharge device for explosion-proof motor according to claim 2, characterized in that: The mounting plate (22) is provided with a plurality of discharge ports (221).

4. The condensate discharge device for explosion-proof motor according to claim 2, characterized in that: The connecting member (23) comprises a connecting plate (231) mounted on the outer wall of the connecting pipe (21) and a clamping rod (232) spirally inserted through the connecting plate (231), one end of the clamping rod (232) being in contact with the outer wall of the casing (1).

5. The condensate discharge device for explosion-proof motor according to claim 4, characterized in that: An elastic pad (222) is provided on the side of the mounting plate (22) close to the inner wall of the housing (1).

6. The condensate discharge device for explosion-proof motor according to claim 1, characterized in that: The liquid discharge nozzle (33) comprises a liquid discharge pipe (331) mounted on the second connecting pipe (32), a mounting frame (332) mounted on the liquid discharge pipe (331), and a sealing sheet (333) slidably mounted on the mounting frame (332).

7. The condensate discharge device for explosion-proof motor according to claim 6, characterized in that: The mounting frame (332) comprises a mounting ring (3321) mounted on the liquid discharge pipe (331) and a plurality of guide rods (3322) with one end mounted on the mounting ring (3321), and the guide rods (3322) are slidably penetrated by the sealing sheet (333).

8. The condensate discharge device for explosion-proof motor according to claim 6, characterized in that: The inner diameter of the liquid discharge pipe (331) gradually decreases from being close to the second connecting pipe (32) to being far away from the second connecting pipe (32).

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