Axial flow fan

Abstract

The utility model discloses an axial flow fan, relates to the field of fans, and aims to solve the problem that lubricating oil can be added to a motor through an oil injection hole only when a machine shell of the axial flow fan is opened. The technical scheme is that the axial flow fan comprises the machine shell, a rack and the motor, the oil injection hole is formed in the motor, an oil injector is fixedly connected to the rack, and an oil conveying pipe is arranged on the outer wall of the motor; according to the utility model, through the arrangement of the oil injector and the oil conveying pipe, people can add the lubricating oil to the motor through the oil injector without opening the casing, so that the process of adding the lubricating oil is more convenient, and the oil injector presses the lubricating oil into the oil injection hole through pressure, so that the oil injection efficiency is improved. And the lubricating oil can quickly enter the oil injection hole under the action of pressure.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan field, more specifically, it relates to a axial flow fan. BACKGROUND

[0002] The axial flow fan is a kind of equipment that gas is pushed along the fan axis direction by blade, and the axial flow fan usually includes fan blade, casing and motor, and the axial flow fan is often used in the ventilation system of underground space, and the axial flow fan can be used to speed up the air circulation of relatively closed space and improve the speed of air exchange with external air to ensure the air quality in space.

[0003] The axial flow fan in the ventilation system often needs to run for a long time, to ensure that the axial flow fan running for a long time can run smoothly, people often need to add lubricating oil to the motor of the axial flow fan regularly, and the motor is usually provided with an oil injection hole, in the prior art, people need to first power off the axial flow fan, and then stop rotating, people need to first disassemble the casing, then open the oil injection hole on the motor, and then add lubricating oil to the oil injection hole, and after adding lubricating oil, people need to assemble the casing again.

[0004] The above-mentioned scheme needs to disassemble the casing to add lubricating oil to the motor, and the process is relatively complicated.

[0005] Therefore, a new scheme needs to be proposed to solve this problem. UTILITY MODEL CONTENT

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an axial flow fan.

[0007] The above technical purpose of the utility model is realized by the following technical scheme: an axial flow fan, comprising a casing, a rack welded on the casing and a motor fixedly connected to the rack, wherein the motor is provided with an oil injection hole, characterized in that: the rack is fixedly connected with an oil injector, the outer wall of the motor is provided with an oil delivery pipe connecting the oil injector and the oil injection hole, and the oil injector is used to press lubricating oil into the oil delivery pipe.

[0008] By adopting the above technical scheme, by setting the oil injector and the oil delivery pipe, when the motor needs to add lubricating oil, people do not need to open the casing to add lubricating oil to the motor through the oil injector, so that the process of adding lubricating oil is relatively convenient, and the oil injector presses lubricating oil into the oil injection hole through pressure, so that the lubricating oil can enter the oil injection hole relatively quickly under the action of pressure, so that the lubricating oil has a relatively fast speed.

[0009] The utility model is further provided with: a round hole is formed in the oil injector, a push rod passes through the round hole, one end of the push rod is provided with a piston located in the oil injector, and the piston abuts against the inner circumferential wall of the oil injector.

[0010] By adopting the technical scheme, through setting the push rod and the piston, when people add lubricating oil to the motor, the push rod drives the piston to move by pressing the push rod, and the piston pushes the lubricating oil into the oil delivery pipe, so that the lubricating oil can be better pressed into the oil injection hole, the piston that abuts against the inner wall of the oil injector has better sealing performance, and the lubricating oil is not easy to pass through the piston and the inner wall of the oil injector and remain above the piston during movement of the piston.

[0011] The utility model discloses further set up as: the inner wall on the round hole is equipped with internal thread, the lateral wall on the push rod is equipped with the external thread for and internal thread cooperation, the push rod is connected with the piston rotation.

[0012] By adopting the technical scheme, through setting the push rod and the piston, when people add lubricating oil to the motor, the push rod drives the piston to move by pressing the push rod, and the piston pushes the lubricating oil into the oil delivery pipe, so that the lubricating oil can be better pressed into the oil injection hole, the piston that abuts against the inner wall of the oil injector has better sealing performance, and the lubricating oil is not easy to pass through the piston and the inner wall of the oil injector and remain above the piston during movement of the piston.

[0013] The utility model discloses further set up as: the oil injector includes the oil cup and the flip, the round hole is set up in the middle part of the flip.

[0014] By adopting the technical scheme, before people add lubricating oil, first open the flip, then pour the lubricating oil into the oil cup, the setting of the oil cup and the flip makes people more convenient in the process of adding lubricating oil to the oil injector, and the flip can better prevent dust from entering the oil cup.

[0015] The utility model discloses further set up as: the flip rotation is connected on the oil cup, the flip is equipped with the cavity along the thickness direction of the cavity, and the depth of the cavity is greater than the thickness of the piston.

[0016] By adopting the technical scheme, in the process that people add lubricating oil to the oil injector, the flip rotation is connected on the oil cup, so that people do not need to find a place to place the flip, and the flip is not easy to lose, the setting of the cavity makes the piston no longer abut against the inner wall of the oil cup, so that the opening process of the flip is more convenient.

[0017] The utility model discloses further set up as: the flip is equipped with the air hole.

[0018] By adopting the technical scheme, in the process that people rotate the push rod, the external air can enter the oil cup through the air hole, better guaranteeing the pressure balance inside and outside the piston, so that people can more easily rotate the push rod.

[0019] The utility model discloses further set up as: the outer wall of the motor is equipped with the hoop for fixing the oil delivery pipe, and the oil delivery pipe is arranged along the length direction of the motor.

[0020] Through the above technical scheme, the hoop is arranged, so that the oil conveying pipe can be fixed on the outer wall of the motor, and is not easy to shake under the action of wind force.

[0021] The utility model further sets up: the oil conveying pipe is connected with the bottom surface of oil cup, the oil cup is fixedly connected on the frame, the oil cup exposes outside the casing.

[0022] Through the above technical scheme, the piston is not easy to leave lubricating oil in the oil cup when pressing the lubricating oil into the oil conveying pipe, and the oil cup exposed outside the casing enables people to pour the lubricating oil into the oil cup without putting hands into the casing.

[0023] In conclusion, the utility model has the following beneficial effects: through the arrangement of the oil injector and the oil conveying pipe, people only need to pour the lubricating oil into the oil injector, then rotate the push rod, and the push rod pushes the piston to press the lubricating oil into the oil conveying pipe in the process of adding the lubricating oil to the motor, the push rod in the form of screw rotation enables people to control the distance of the piston more accurately through the number of rotations of the push rod, the oil conveying pipe is connected with the oil injection hole, so that the lubricating oil can be pressed into the motor, and the above arrangement enables people to add the lubricating oil to the motor without disassembling the casing, so that the process of adding the lubricating oil is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of the utility model;

[0025] Figure 2 It is a partial sectional view of the utility model.

[0026] In the drawing: 1, casing; 2, frame; 3, oil injection hole; 4, oil conveying pipe; 5, round hole; 6, push rod; 7, piston; 8, oil cup; 9, flip cover; 10, cavity; 11, air hole; 12, hoop. DETAILED DESCRIPTION

[0027] The utility model will be described in detail in combination with the drawings and examples.

[0028] A kind of axial flow fan, such as Figure 1 And Figure 2As shown, including the shell 1, welded on the shell 1 frame 2 and by bolted to the motor frame 2, the motor exposed on the output shaft, the motor fixed with oil hole 3, oil hole 3 is located on the outer wall of the motor near the end of the output shaft, the frame 2 is bolted to the oiler exposed outside the shell 1, the outer wall of the motor is provided with the oil pipe 4 connecting the oiler and oil hole 3, the outer wall of the motor is screwed with the clamp 12 for fixing the oil pipe 4, the number of clamp 12 is several, the oil pipe 4 is arranged along the length direction of the motor, the oiler is used to press the lubricating oil into the oil pipe 4, the oiler is provided with a circular hole 5, the push rod 6 is passed through the circular hole 5, the length of the push rod 6 is greater than the height of the oiler, one end of the push rod 6 is rotatably connected with the piston 7 in the oiler, the piston 7 is in contact with the inner wall of the oiler.

[0029] As shown in the figure, Figure 2 The oiler includes an oil cup 8 and a flip cover 9, the inner wall of the circular hole 5 is integrally formed with an internal thread, the push rod 6 is integrally formed as a cylinder, the side wall of the push rod 6 is formed with an external thread for cooperation with the internal thread, the length of the external thread is equal to the sum of the thickness of the piston 7, the push rod 6 is formed with an anti-skid pattern on the side wall which is not processed with the external thread, the anti-skid pattern is arranged along the length direction of the push rod 6, the circular hole 5 is formed in the middle of the flip cover 9, the flip cover 9 is rotatably connected to the oil cup 8, the flip cover 9 is provided with a cavity 10 formed along the thickness direction of the flip cover 9, the depth of the cavity 10 is greater than the thickness of the piston 7, the flip cover 9 is provided with an air hole 11, the bottom surface of the oil cup 8 is provided with an oil delivery hole, one end of the oil pipe 4 is inserted into the oil delivery hole, and the oil cup 8 is bolted to the frame 2.

[0030] The working process is as follows: when people regularly add lubricating oil to the axial flow fan, first of all, the axial flow fan is powered off, and after confirming that the axial flow fan has completely stopped running, the flip cover 9 is opened by hand, the flip cover 9 is rotatably connected to the oil cup 8, and people do not need to find a place to put the flip cover 9, so that the flip cover 9 is not easy to lose, then people pour the lubricating oil needed into the oil cup 8, the oil cup 8 exposed outside the shell 1, so that people can pour the lubricating oil into the oil cup 8 without putting their hands into the shell 1, then the flip cover 9 is turned over on the oil cup 8, the arrangement of the oil cup 8 and the flip cover 9 makes the process of adding lubricating oil to the oiler more convenient, and the flip cover 9 can better prevent dust from entering the oil cup 8.

[0031] By setting the internal thread and external thread, in the process of people rotating the push rod 6, the rotating push rod 6 moves towards the oiler and drives the piston 7 to move, the moving piston 7 presses the lubricating oil into the oil delivery pipe 4, the piston 7 in contact with the inner wall of the oiler has good sealing performance, in the process of the piston 7 moving, the lubricating oil is not easy to pass through the piston 7 and the inner wall of the oil cup 8 and remain above the piston 7, through the thread rotation form, people can control the distance of the piston 7 moving more accurately through the number of rotations of the push rod 6, so that people can better control the amount of oil pressed into the oil delivery pipe 4, the piston 7 connected with the push rod 6, in the process of the push rod 6 driving the piston 7 to move, the piston 7 is not easy to rotate and rub with the inner wall of the oil cup 8, so that people can rotate the push rod 6 more easily, the anti-skid lines arranged on the push rod 6 increase the static friction between the push rod 6 and the hand, so that the hand is not easy to slide relative to the push rod 6 in the process of people rotating the push rod 6, in the process of people rotating the push rod 6, the external air can enter the oil cup 8 through the air hole 11, better guaranteeing the pressure balance inside and outside the piston 7, so that people can rotate the push rod 6 more easily, the lubricating oil enters the oil delivery pipe 4 through the connection between the oil cup 8 and the oil delivery pipe 4, the connection between the oil cup 8 and the oil delivery pipe 4 is arranged at the bottom surface of the oil cup 8, so that people can press the lubricating oil into the oil delivery pipe 4 more completely, at this time, the lubricating oil pressed into the oil delivery pipe 4 enters the oil injection hole 3 along the oil delivery pipe 4, the above arrangement makes the process of people adding lubricating oil for the motor more convenient.

[0032] The oil delivery pipe 4 fixed on the outer wall of the motor by the hoop 12 is not easy to shake under the action of wind in the subsequent use process of the axial flow fan, after the lubricating oil in the oil cup 8 is used up, before people add lubricating oil for the motor again, the piston 7 is pulled back to the cavity 10 in the flip cover 9 by rotating the push rod 6, the piston 7 completely contained in the cavity 10 is no longer in contact with the inner wall of the oil cup 8, so that the opening process of the flip cover 9 is more convenient, then people can continue to perform the above steps of adding lubricating oil.

[0033] The above only describes the preferred embodiments of the present application, the protection scope of the present application is not limited to the above embodiments, any technical solutions falling within the idea of the present application belong to the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the present application are also considered as the protection scope of the present application.

Claims

1. An axial flow fan comprising a casing (1), a frame (2) welded to the casing (1) and a motor fixedly connected to the frame (2), an oil injection hole (3) being provided on the motor, characterized in that: The frame (2) is fixedly connected with an oil injector, and the outer wall of the motor is provided with an oil delivery pipe (4) connecting the oil injector and an oil injection hole (3), and the oil injector is used to press lubricating oil into the oil delivery pipe (4).

2. An axial fan as claimed in claim 1, characterized in that: A round hole (5) is formed in the oil injector, and a push rod (6) passes through the round hole (5), one end of the push rod (6) is provided with a piston (7) located in the oil injector, and the piston (7) abuts against the inner circumferential wall of the oil injector.

3. An axial fan as claimed in claim 2, characterised in that: The inner wall of the round hole (5) is provided with an internal thread, and the side wall of the push rod (6) is provided with an external thread matched with the internal thread, and the push rod (6) is rotationally connected with the piston (7).

4. An axial fan as claimed in claim 3, characterised in that: The oil injector comprises an oil cup (8) and a flip cover (9), and the round hole (5) is formed in the center of the flip cover (9).

5. An axial fan as claimed in claim 4, characterised in that: The flip cover (9) is rotationally connected to the oil cup (8), and the flip cover (9) is internally provided with a cavity (10) formed in the thickness direction of the flip cover (9), and the depth of the cavity (10) is greater than the thickness of the piston (7).

6. An axial fan as claimed in claim 5, characterised in that: An air hole (11) is formed in the flip cover (9).

7. An axial fan as claimed in claim 1, characterized in that: The outer wall of the motor is provided with a clamp (12) for fixing the oil delivery pipe (4), and the oil delivery pipe (4) is arranged along the length direction of the motor.

8. An axial fan as claimed in claim 7, characterised in that: The oil delivery pipe (4) is connected to the bottom surface of the oil cup (8), the oil cup (8) is fixedly connected to the frame (2), and the oil cup (8) is exposed outside the machine shell (1).

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