Stable sealing protection unit of variable-frequency power supply

Abstract

The utility model provides a stable sealing protection unit of a variable-frequency power supply, a cross beam which is spliced to form a frame comprises a cross frame, a guide plate and a connecting plate, the guide plate is connected with the connecting plate, an included angle between the guide plate and the connecting plate is an obtuse angle, and a top plate connected to the top of the frame comprises a plate body and a flange. The flange is located on the side, facing the interior of the containing space, of the guide plate and located on the upper portion of the guide plate, and the included angle between the flange and the plate body is larger than the included angle between the guide plate and the connecting plate arranged in the vertical direction, so that the flange and the guide plate are combined to form the sealing unit. According to the variable-frequency power supply, the turnup and the guide plate are stacked in the vertical direction, double-layer protection is formed in the vertical direction through the turnup and the guide plate, the sealing unit can be formed through direct assembly, sealing can be achieved without a sealing rubber strip, and the sealing stability and reliability of the variable-frequency power supply are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of organic fertilizer processing equipment, in particular to a stable sealing protection unit of a variable frequency power supply. Background Art

[0002] A variable frequency power supply is a power supply that can achieve voltage and current changes by adjusting the output frequency. It is mainly used to change the frequency of AC power, usually for driving motors and other applications that require adjustable power. Its working principle is to control the output power by changing the frequency of the input power. This usually involves converting the input power into DC power first, and then converting it into AC power with adjustable frequency.

[0003] Variable frequency power supplies are widely used in motors that need to run at variable speeds, such as air conditioners, elevators, fans, pumps, etc. By adjusting the power frequency, the speed of the motor can be adjusted, thereby achieving precise control of the operation of the equipment.

[0004] In the design of variable frequency power supply, the sealing and dustproof of the door frame is very important, especially in industrial environment, to protect the internal electronic components and circuits from dust, moisture and other pollutants. The following are some common sealing and dustproof measures that can be applied to the door frame of variable frequency power supply:

[0005] Sealing strips and gaskets: Use high-quality sealing strips or gaskets at the joints of the door frame. These parts can effectively prevent dust and moisture from penetrating into the interior of the equipment.

[0006] Sliding or rotating seals: If the door body needs to slide or rotate, make sure to use a sealing device around the moving part to prevent dust from entering. This can be a sliding sealing strip, rotating sealing ring, etc.

[0007] However, the existing sealing performance of the frame at the assembly point is low, and it is impossible to effectively limit the external dust from the assembly gap of the frame to block and seal. If a sealing strip is added to seal the assembly gap, on the one hand, the sealing performance will be affected by the aging of the sealing strip, and the reliability is low. On the other hand, the setting of the sealing strip will bring greater economic and labor costs to the production cost and assembly processing of the variable frequency power supply. Utility Model Content

[0008] In view of this, the technical problem to be solved by the utility model is: how to provide a stable sealing protection unit of a variable frequency power supply to achieve sealing by assembling between a top cover and a frame, thereby improving sealing stability and reliability.

[0009] To achieve the above-mentioned purpose, the utility model proposes a stable sealed protection unit for a variable frequency power supply, which comprises: a frame, a top plate, a door plate, a support bracket and electrical components;

[0010] The top plate is fixedly arranged on the top of the frame, the door plate is rotatably connected to the frame, a receiving space is formed inside the frame, and the receiving space is opened or closed by the rotation of the door plate, the support bracket is fixedly arranged on the frame and located in the receiving space, and the electrical component is fixedly connected to the support bracket;

[0011] The frame includes a base, vertical beams and horizontal beams, a plurality of the vertical beams are fixedly arranged on the base in the vertical direction, the horizontal beams are fixedly arranged on the top of the vertical beams and arranged in the horizontal direction, and the horizontal beams, the vertical beams and the base are jointly surrounded to form the accommodation space;

[0012] The cross beam comprises a cross frame, a guide plate and a connecting plate, wherein the guide plate is connected to one side of the cross frame, the connecting plate is connected to the end of the guide plate, the angle between the connecting plate and the guide plate is an obtuse angle, two connecting plates are respectively connected to the ends of the guide plate, one connecting plate is arranged in the horizontal direction, and the other connecting plate is arranged in the vertical direction;

[0013] The top plate includes a plate body and a flange arranged on the periphery of the plate body, the flange is folded along the inner side of the plate body, the corner end of the top plate is fixedly connected to the vertical beam by a fastener, the flange is located on the side of the guide plate facing the inside of the accommodating space, and the flange is located on the upper part of the guide plate, and the angle between the flange and the plate body is greater than the angle between the guide plate and the connecting plate arranged along the vertical direction.

[0014] Furthermore, a protective corner piece is provided between two adjacent horizontal beams and the vertical beam, and the protective corner piece is fixedly provided at the end of the vertical beam.

[0015] Furthermore, the length dimension of the flange is smaller than the length dimension of the guide plate.

[0016] Furthermore, the transverse frame, the guide plate and the connecting plate are integrally formed.

[0017] Compared with the related art, the utility model proposes a stable sealing protection unit for a variable frequency power supply, which has the following beneficial effects: the cross beams spliced ​​to form a frame include a cross frame, a guide plate and a connecting plate, the guide plate is connected to the connecting plate, and the angle between the guide plate and the connecting plate is an obtuse angle, and the top plate connected to the top of the frame includes a plate body and a flange, the flange is located on the side of the guide plate facing the inside of the accommodating space, and the flange is located on the upper part of the guide plate, the angle between the flange and the plate body is greater than the angle between the guide plate and the connecting plate arranged in the vertical direction, thereby forming a sealing unit by combining the flange and the guide plate, and forming a double-layer protection in the vertical direction by stacking the flange and the guide plate in the vertical direction and directly assembling the sealing unit, and sealing can be achieved without setting a sealing strip, thereby improving the sealing stability and reliability of the variable frequency power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a stable sealing protection unit of a variable frequency power supply in an embodiment of the utility model;

[0019] Figure 2 It is a partially enlarged schematic diagram of the variable frequency power supply in the embodiment of the utility model.

[0020] Figure 3 It is a partial enlarged schematic diagram of the variable frequency power supply in the embodiment of the utility model without the protective corner piece;

[0021] Figure 4 It is a schematic diagram of the structure of the crossbeam in the embodiment of the utility model. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] See also Figure 1-4 As shown, the utility model provides a stable sealed protection unit for a variable frequency power supply, which includes: a frame 10, a top plate 20, a door plate 30, a support bracket 40 and an electrical component 50.

[0024] The top plate 20 is fixedly arranged on the top of the frame 10, the door panel 30 is rotatably connected to the frame 10, a receiving space is formed inside the frame 10, and the receiving space is opened or closed by the rotation of the door panel 30, the supporting bracket 40 is fixedly arranged on the frame 10 and is located in the receiving space, and the electrical component 50 is fixedly connected to the supporting bracket 40, specifically, the electrical component 50 includes an input power supply, a rectifier, a filter and an inverter.

[0025] The frame 10 includes a base 11, vertical beams 12 and cross beams 13. A plurality of vertical beams 12 are fixedly arranged on the base 11 in the vertical direction. The cross beams 13 are fixedly arranged on the top of the vertical beams 12 and are arranged in the horizontal direction. The cross beams 13, the vertical beams 12 and the base 11 together form a accommodating space. A protective corner piece 14 is arranged between two adjacent cross beams 13 and vertical beams 12. The protective corner piece 14 is fixedly arranged at the end of the vertical beam 12.

[0026] The crossbeam 13 includes a cross frame 131, a guide plate 132 and a connecting plate 133. The cross frame 131, the guide plate 132 and the connecting plate 133 are integrally formed. The guide plate 132 is connected to one side of the cross frame 131. The connecting plate 133 is connected to the end of the guide plate 132. The angle between the connecting plate 133 and the guide plate 132 is an obtuse angle. The two connecting plates 133 are respectively connected to the ends of the guide plate 132. One connecting plate 133 is arranged in the horizontal direction, and the other connecting plate 133 is arranged in the vertical direction.

[0027] The top plate 20 includes a plate body 21 and a flange 22 arranged on the periphery of the plate body 21, the flange 22 is folded along the inner direction toward the plate body 21, the length of the flange 22 is smaller than the length of the guide plate 132, the corner end of the top plate 20 is fixedly connected to the vertical beam 12 by a fastener, the flange 22 is located on the side of the guide plate 132 facing the inside of the accommodating space, and the flange 22 is located at the upper part of the guide plate 132, the angle between the flange 22 and the plate body 21 is greater than the angle between the guide plate 132 and the connecting plate 133 arranged along the vertical direction, the flange 22 that is folded downward and extending toward the inside is arranged at the upper part of the guide plate 132, and the angle between the guide plate 132 and the vertical plane is larger, which can prevent dust from entering the interior of the accommodating space from the assembly gap.

[0028] Thus, a sealing unit is formed by combining the flange 22 and the guide plate 132. By stacking the flange 22 and the guide plate 132 in the vertical direction, a double layer of protection is formed by the flange 22 and the guide plate 132 in the vertical direction and the sealing unit can be formed by direct assembly. Sealing can be achieved without setting a sealing strip, thereby improving the sealing stability and reliability of the variable frequency power supply.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A stable sealed protection unit for a variable frequency power supply, characterized in that: It includes: Frames, roof panels, door panels, support brackets and electrical components; The top plate is fixedly arranged on the top of the frame, the door plate is rotatably connected to the frame, a receiving space is formed inside the frame, and the receiving space is opened or closed by the rotation of the door plate, the support bracket is fixedly arranged on the frame and located in the receiving space, and the electrical component is fixedly connected to the support bracket; The frame includes a base, vertical beams and horizontal beams, a plurality of the vertical beams are fixedly arranged on the base in the vertical direction, the horizontal beams are fixedly arranged on the top of the vertical beams and arranged in the horizontal direction, and the horizontal beams, the vertical beams and the base are jointly surrounded to form the accommodation space; The cross beam comprises a cross frame, a guide plate and a connecting plate, wherein the guide plate is connected to one side of the cross frame, the connecting plate is connected to the end of the guide plate, the angle between the connecting plate and the guide plate is an obtuse angle, two connecting plates are respectively connected to the ends of the guide plate, one connecting plate is arranged in the horizontal direction, and the other connecting plate is arranged in the vertical direction; The top plate includes a plate body and a flange arranged on the periphery of the plate body, the flange is folded along the inner side of the plate body, the corner end of the top plate is fixedly connected to the vertical beam by a fastener, the flange is located on the side of the guide plate facing the inside of the accommodating space, and the flange is located on the upper part of the guide plate, and the angle between the flange and the plate body is greater than the angle between the guide plate and the connecting plate arranged along the vertical direction.

2. The stable sealing protection unit of the variable frequency power supply according to claim 1, characterized in that: A protective corner piece is arranged between two adjacent horizontal beams and the vertical beam, and the protective corner piece is fixedly arranged at the end of the vertical beam.

3. The stable sealing protection unit of the variable frequency power supply according to claim 1, characterized in that: The length dimension of the flange is smaller than the length dimension of the guide plate.

4. The stable sealing protection unit of the variable frequency power supply according to claim 1, characterized in that: The transverse frame, the guide plate and the connecting plate are integrally formed.

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