Drainage air hole structure of motor cylinder

Abstract

The utility model provides a drainage air hole structure of a motor cylinder, and belongs to the field of motors. The machine barrel is connected with a pump head shell, a winding iron core is arranged in the machine barrel, a rotor is rotationally arranged in the winding iron core, one end of the rotor extends out of the machine barrel and extends into the pump head shell, a machine bin is arranged in the machine barrel, a plurality of water drainage air holes are formed in the machine bin, and the water drainage air holes penetrate through the machine barrel. The motor has the beneficial effects that temperature transfer is carried out through the drainage air holes, so that the temperature inside and outside the motor is stable as much as possible in the heating and cooling processes, and the generation of condensed water is reduced; condensate water can be discharged through the drainage air hole, so that the interior of the machine barrel can be kept dry to a certain degree before the motor operates next time, and machine burning caused by excessive water vapor and condensate water is prevented.

Description

Technical Field

[0001] The utility model belongs to the field of motors, and in particular relates to a drainage pore structure of a motor barrel. Background Art

[0002] When the water pump is running in a humid environment, the motor will heat up, which will make the air pressure inside the motor higher than the external air pressure, reducing the gas inside the motor. When the motor is stopped, the motor will slowly cool down, causing the humid air outside the motor to slowly enter the motor cavity. When the motor is completely cooled down, the humid gas hits the cold metal surface to produce condensed water. Due to the semi-sealed nature of the motor cavity, the condensed water cannot be discharged in time. Over time, the condensed water increases, and eventually the motor is filled with water and burns out, causing the motor to be easily scrapped, have a short service life, and have poor market feedback.

[0003] Therefore, it is necessary to design a drainage structure that can discharge the water vapor inside the motor in time.

[0004] For example, a Chinese invention patent discloses a vertical motor drainage structure [application number CN202322060564.1], including an outer shell, a rotor assembly and a stator assembly. The rotor assembly includes a rotating shaft, a rotor seat and a magnet. The rotor seat includes a swivel, a connecting plate and a cylinder. The swivel is fixed on the rotating shaft, the connecting plate is arranged on the circumferential side of the swivel, the cylinder is fixed on the connecting plate, and the magnet is arranged on the cylinder. The stator assembly includes a stator seat and a stator core. The stator core is fixed in the stator seat, and the outer shell and the stator seat are docked; a guide hole is provided on the swivel, a guide channel is provided on the rotating shaft, and a water inlet and a drain are provided on the rotating shaft to match the guide channel. The drain is outside the outer shell, but the water in this scheme still needs to pass through the swivel and the rotating shaft, and the channel is narrow, so water vapor will still remain in the swivel and the rotating shaft. Utility Model Content

[0005] The utility model aims to solve the above problems and provides a drainage pore structure for a motor cylinder.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A motor barrel drainage pore structure comprises a barrel, wherein the barrel is connected to a pump head housing, a winding core is arranged inside the barrel, a rotor rotates inside the winding core, one end of the rotor extends out of the barrel and extends into the pump head housing, a machine chamber is arranged inside the barrel, the winding core is located in the machine chamber, a plurality of drainage pores are arranged in the machine chamber, and the drainage pores run through the barrel.

[0008] In the above-mentioned motor barrel drainage hole structure, a frame support is provided at the bottom of the barrel, and the drainage hole is located at the bottom of the barrel.

[0009] In the above-mentioned drainage air hole structure of the motor barrel, an impeller chamber is provided inside the pump head housing. A number of impellers are provided on the rotor inside the impeller chamber. A mechanical seal baffle is provided at one end of the impeller chamber close to the barrel. A connecting frame is provided between the impeller chamber and the machine chamber. The rotor rotates through the connecting frame. A water retaining ring is also sleeved on the rotor. The water retaining ring is located on the surface of the connecting frame close to the impeller chamber and seals the connection between the rotor and the connecting frame.

[0010] In the above-mentioned drainage air hole structure of the motor barrel, one end of the rotor far from the pump head housing also extends out of the barrel, and a wind blade is connected to the end of the rotor far from the pump head housing. A rear wind cover is fixed outside the barrel through a detachable structure. A number of ventilation holes are provided on the rear wind cover to form a filter layer.

[0011] In the above-mentioned drainage air hole structure of the motor barrel, the rear wind cover is fixed on the barrel by means of buckles or bolts.

[0012] In the above-mentioned drainage air hole structure of the motor barrel, a number of downward-sloping surfaces corresponding to the drainage air holes are provided at the bottom of the machine chamber. The downward-sloping surfaces are arc-shaped or inclined. The drainage air holes are located at the lowest positions of the corresponding downward-sloping surfaces.

[0013] In the above-mentioned drainage air hole structure of the motor barrel, the drainage air hole is also connected with a sealing structure.

[0014] In the above-mentioned drainage air hole structure of the motor barrel, the sealing structure includes a sealing cylinder provided on the barrel and hollow inside. A sealing column can be placed inside the sealing cylinder.

[0015] In the above-mentioned drainage air hole structure of the motor barrel, the sealing column is fixed inside the sealing cylinder by rubber or by screwing. The part of the sealing column extending into the machine chamber is provided with a water absorption layer.

[0016] In the above-mentioned drainage air hole structure of the motor barrel, a wire box is also provided on the barrel, and a waterproof cover is provided on the wire box.

[0017] Compared with the existing technology, the advantages of the present utility model are as follows:

[0018] 1. Temperature transfer is carried out through the drainage air holes, so that the temperature inside and outside the motor is as stable as possible during the heating and cooling processes, reducing the generation of condensed water; the condensed water can be discharged through the drainage air holes, so as to keep the inside of the barrel dry to a certain extent before the next operation of the motor, preventing water ingress and burning of the machine caused by excessive water vapor and condensed water.

[0019] 2. The frame support is used to support the barrel and raise the height of the barrel, so that the outlet of the drainage air hole is not easily blocked, the temperature exchange of the drainage air hole can be kept smooth during the heating and cooling processes of the motor, and the condensed water can be discharged in time when it flows out.

[0020] 3. When the motor is not used for a long time, the drainage air hole is sealed through the connection sealing structure, thereby preventing external water vapor from entering the machine compartment and preventing the machine from being eroded by the water vapor.

[0021] 4. When not in use, the water absorption layer can absorb as much water vapor remaining in the machine compartment as possible, improve the dryness of the machine compartment as much as possible, and prevent the machine from being eroded by the water vapor. Description of the Drawings

[0022] Figure 1 is the overall schematic diagram of the present utility model;

[0023] Figure 2 is Figure 1 the cross-sectional schematic diagram of

[0024] Figure 3 is the schematic diagram of the barrel;

[0025] Figure 4 is Figure 1 the schematic diagram in another direction and with the rear wind cover hidden;

[0026] Figure 5 is the schematic diagram of the sealing cylinder in the sealed state.

[0027] In the figure: barrel 10, pump head housing 11, winding core 12, rotor 13, machine compartment 14, drainage air hole 15, frame support 16, impeller cavity 17, impeller 18, mechanical seal baffle 19, connection frame 20, water retaining ring 21, wind blade 22, rear wind cover 23, sliding surface 24, sealing cylinder 25, sealing column 26, wire box 27, waterproof cover 28, ventilation hole 29. Detailed Embodiment

[0028] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0029] A drainage air hole structure for a motor barrel is provided in the present utility model. As shown in Figure 1-5 , it includes a barrel 10, the barrel 10 is connected with a pump head housing 11, a winding core 12 is arranged in the barrel 10, a rotor 13 rotates in the winding core 12, one end of the rotor 13 extends out of the barrel 10 and extends into the pump head housing 11, a machine compartment 14 is arranged in the barrel 10, the winding core 12 is located in the machine compartment 14, the machine compartment 14 is provided with a plurality of drainage air holes 15, and the drainage air holes 15 penetrate through the barrel 10.

[0030] In this embodiment, the drain vent 15 has two functions. First, during the operation of the motor, it will heat up, and during the shutdown process, it will cool down. Temperature transfer is carried out through the drain vent 15, so that the temperature inside and outside the motor is kept as stable as possible during the heating and cooling processes, reducing the generation of condensed water. Second, when there is water vapor in the barrel 10, after the motor stops working and the internal temperature drops, when the water vapor touches the cold metal surface, condensed water will form on the metal surface. The condensed water can be discharged through the drain vent 15, so as to keep the inside of the barrel 10 dry to a certain extent before the next motor operation, preventing water ingress and burning of the machine caused by excessive water vapor and condensed water.

[0031] A frame support 16 is provided at the bottom of the barrel 10, and the drain vent 15 is located at the bottom of the barrel 10.

[0032] In this embodiment, the frame support 16 is used to support the barrel 10 and raise the height of the barrel 10, so that the outlet of the drain vent 15 is not easily blocked, the temperature exchange of the drain vent 15 can be kept smooth during the heating and cooling processes of the motor, and the condensed water can be discharged in time when it flows out.

[0033] An impeller chamber 17 is provided in the pump head housing 11. A number of impellers 18 are provided on the rotor 13 in the impeller chamber 17. A mechanical seal baffle 19 is provided at one end of the impeller chamber 17 close to the barrel 10. A connecting frame 20 is provided between the impeller chamber 17 and the machine chamber 14. The rotor 13 rotates through the connecting frame 20. A water retaining ring 21 is also sleeved on the rotor 13. The water retaining ring 21 is located on the surface of the connecting frame 20 close to the impeller chamber 17 and seals the connection between the rotor 13 and the connecting frame 20.

[0034] In this embodiment, the motor is applied to the water pump field. The impeller 18 rotates for pumping water. The mechanical seal baffle 19 is used to isolate the impeller chamber 17 and the barrel 10, serving as a waterproof structure inside the barrel 10, and the water retaining ring 21 can further prevent water vapor from entering the inside of the barrel 10, playing a role in protecting the barrel 10.

[0035] One end of the rotor 13 away from the pump head housing 11 also extends out of the barrel 10, and a wind blade 22 is connected to the end of the rotor 13 away from the pump head housing 11. A rear wind cover 23 is fixed outside the barrel 10 through a detachable structure. A number of ventilation holes 29 are provided on the rear wind cover 23 to form a filter layer.

[0036] In this embodiment, a number of ventilation holes 29 are provided on the rear wind cover 23 to form a filter layer. During the operation of the motor, the wind blades 22 rotate continuously at high speed, and the generated gas flow causes air to enter the rear wind cover 23. This filter layer can prevent substances with larger particles from entering and wearing the wind blades 22, and also plays a protective role. After long-term operation, dust will accumulate on the rear wind cover 23, and the rear wind cover 23 can be cleaned of dust through a detachable structure.

[0037] The rear wind cover 23 is fixed to the barrel 10 by means of snap fasteners or bolts.

[0038] In this embodiment, it is convenient to disassemble and has a certain degree of firmness.

[0039] A number of downward-sloping surfaces 24 corresponding to the drainage air holes 15 are provided at the bottom of the machine compartment 14. The downward-sloping surfaces 24 are arc-shaped or inclined, and the drainage air holes 15 are located at the lowest points of the corresponding downward-sloping surfaces 24.

[0040] In this embodiment, when water vapor touches a cold metal surface and forms condensed water, the condensed water will move downward along the inner wall and converge at the bottom of the machine compartment 14. Under the action of its own gravity, the condensed water will move along the inclined downward-sloping surface 24 to the bottom of the downward-sloping surface 24 and flow into the drainage air hole 15. Thus, it prevents condensed water from remaining at the bottom of the machine compartment 14 and improves the dryness inside the machine compartment 14 as much as possible.

[0041] The drainage air hole 15 can also be connected with a sealing structure.

[0042] In this embodiment, when the motor is not used for a long time, the drainage air hole 15 is sealed by connecting the sealing structure, thereby preventing external water vapor from entering the machine compartment 14 and preventing the machine from being eroded by water vapor.

[0043] The sealing structure includes a sealing cylinder 25 which is provided on the barrel 10 and is hollow. A sealing column 26 can be placed inside the sealing cylinder 25.

[0044] In this embodiment, when not in use for a long time, the sealing column 26 is inserted into the sealing cylinder 25 to block the sealing cylinder 25 and seal the drainage air hole 15. When in use, the sealing column 26 is pulled out. In order to prevent the sealing column 26 from being lost, the sealing column 26 can be connected to the sealing cylinder 25 or the barrel 10 by means of a hanging rope.

[0045] The sealing column 26 is fixed inside the sealing cylinder 25 by means of rubber or screwing. The part of the sealing column 26 extending into the machine compartment 14 is provided with a water-absorbing layer.

[0046] In this embodiment, when the motor needs to be sealed to drain the water vent hole 15 after a long period of inactivity, there may still be a relatively large amount of water vapor remaining in the machine chamber 14. The water absorption layer can absorb as much of the water vapor remaining in the machine chamber 14 as possible, thereby increasing the dryness of the machine chamber 14 as much as possible and preventing the water vapor from corroding the machine.

[0047] A wire box 27 is also provided on the barrel 10, and a waterproof cover 28 is provided on the wire box 27.

[0048] In this embodiment, the waterproof cover 28 is also used to protect the electrical components in the wire box 27 from being damaged by water.

[0049] This technical solution is to open a drainage vent hole 15 at the bottom of the front and rear positions of the motor, so that during the operation and temperature rise and shutdown and temperature drop of the motor, the temperature inside and outside the motor cavity is balanced as much as possible, reducing the generation of condensate. When condensate is generated, it can also flow out in time through this drainage vent hole.

[0050] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0051] Although terms such as barrel 10, pump head housing 11, winding core 12, rotor 13, machine chamber 14, drainage vent hole 15, frame support 16, impeller chamber 17, impeller 18, mechanical seal baffle 19, connecting frame 20, water retaining ring 21, fan blade 22, rear wind cover 23, sliding surface 24, sealing cylinder 25, sealing column 26, wire box 27, waterproof cover 28, ventilation hole 29, etc. are used more frequently herein, the use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A drainage air hole structure of a motor cylinder, comprising a cylinder (10), the cylinder (10) is connected with a pump head housing (11), a winding core (12) is arranged in the cylinder (10), a rotor (13) rotates in the winding core (12), one end of the rotor (13) extends out of the cylinder (10) and extends into the pump head housing (11), and is characterized in that, The described barrel (10) is internally provided with a machine chamber (14), the described winding core (12) is located within the machine chamber (14), the described machine chamber (14) is provided with a number of drainage air holes (15), and the drainage air holes (15) penetrate through the barrel (10).

2. The drainage air hole structure of a motor cylinder according to claim 1, wherein The bottom of the described barrel (10) is provided with a frame support (16), and the drainage air holes (15) are located at the bottom of the barrel (10).

3. The drainage air hole structure of a motor cylinder according to claim 1, wherein, The described pump head housing (11) is internally provided with an impeller chamber (17), the impeller chamber (17) is internally provided with a number of impellers (18) arranged on a rotor (13), one end of the impeller chamber (17) close to the barrel (10) is provided with a mechanical seal baffle (19), a connection frame (20) is provided between the impeller chamber (17) and the machine chamber (14), the rotor (13) rotates through the connection frame (20), and a water retaining ring (21) is further sleeved on the rotor (13), and the water retaining ring (21) is located at the surface of the connection frame (20) close to the impeller chamber (17) and seals the connection between the rotor (13) and the connection frame (20).

4. A motor cylinder drainage air hole structure according to claim 1, characterized in that, One end of the described rotor (13) far from the pump head housing (11) also extends out of the barrel (10), and a wind blade (22) is connected to the end of the rotor (13) far from the pump head housing (11). A rear wind cover (23) is fixed outside the barrel (10) through a detachable structure, and a number of ventilation holes (29) are provided on the rear wind cover (23) to form a filter layer.

5. The drainage air hole structure of a motor cylinder according to claim 4, characterized in that, The described rear wind cover (23) is fixed to the barrel (10) by means of snap-fastening or by bolting.

6. The drainage air hole structure of the motor cylinder according to claim 2, wherein The bottom of the described machine chamber (14) is provided with a number of downward-sloping surfaces (24) corresponding to the drainage air holes (15), the downward-sloping surfaces (24) are arc-shaped or inclined, and the drainage air holes (15) are located at the lowest points of the corresponding downward-sloping surfaces (24).

7. The drainage air hole structure of a motor cylinder according to claim 1, characterized in that, The described drainage air holes (15) are also connected with a sealing structure.

8. The drainage air hole structure of a motor cylinder according to claim 7, characterized in that, The described sealing structure includes a sealing cylinder (25) provided on the barrel (10) and hollowly arranged, and a sealing column (26) can be placed inside the sealing cylinder (25).

9. The drainage air hole structure of a motor cylinder according to claim 8, characterized in that, The described sealing column (26) is fixed inside the sealing cylinder (25) by means of rubber or by screwing, and the part of the sealing column (26) extending into the machine chamber (14) is provided with a water absorption layer.

10. The drainage air hole structure of a motor cylinder according to claim 1, characterized in that A wire box (27) is further provided on the barrel (10), and a waterproof cover (28) is covered on the wire box (27).

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