Frequency converter for screw air compressor

Abstract

The frequency converter comprises a shell, a main body is arranged in the shell, limiting assemblies are arranged at the top and the bottom of the main body, and sealing assemblies are arranged at the top and the bottom of the shell. Through the arranged limiting assembly, when an operator rotates a rotating rod, the rotating rod drives a bevel gear connected with the rotating rod to start to rotate, under the synergistic effect of mechanical transmission, the bevel gear further drives another bevel gear meshed with the bevel gear, and then the two-way screw is driven to rotate synchronously; the rotation of the two-way screw rod can drive the limiting rings on the left side and the right side to move in opposite directions, so that the wires of different specifications can be accurately arranged and reliably limited, and due to the ingenious design, the orderly arrangement of the wires is realized, the fixing stability of the wires is obviously improved, the problem of loose connection caused by factors such as vibration is effectively avoided, and the service life of the wires is prolonged. And therefore, the applicability and reliability of the device in actual use are greatly improved, and the overall practicability of the device is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, and in particular to a frequency converter for screw air compressors. Background Technology

[0002] A frequency converter is a power electronic device that can change the frequency of alternating current (AC). Its working principle typically involves first rectifying the input AC power into direct current (DC), and then using an inverter to convert the DC power into AC power with different frequencies for output. In industrial applications, it is commonly used for motor speed control, precisely controlling motor speed by adjusting the power supply frequency. In power systems, it can be used to improve power quality and achieve interconnection between power grids of different frequencies, effectively meeting diverse power demands and system operation requirements.

[0003] In the current market, most frequency converters use bolts to directly connect the wires. However, screw air compressors generate vibrations during long-term operation, and existing frequency converters fail to effectively address this issue. They lack effective organization and restraint functions for the connecting wires, resulting in messy and disordered wiring that severely affects the aesthetics of the device. Furthermore, this messy state reduces the stability of the wire fixation, thus weakening the overall practicality of the device. Therefore, there is an urgent need to design a frequency converter for screw air compressors to solve these problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies that cannot effectively limit the movement of wires, thus reducing the aesthetics and practicality of wire connections. This invention proposes a frequency converter for screw air compressors.

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

[0006] A frequency converter for a screw air compressor includes a housing, a main body disposed inside the housing, limiting components disposed at the top and bottom of the main body, and sealing components disposed at the housing and the top and bottom.

[0007] The limiting component includes a mounting base, the mounting base having horizontally distributed motion grooves inside, a bidirectional screw being movably mounted inside the motion grooves via bearings, and movable plates being threaded to both ends of the outer wall of the bidirectional screw, with a limit ring being bolted to the outer wall of the adjacent side of the movable plate.

[0008] Preferably, the defining component further includes a rotating rod movably mounted on the top inner wall of the mounting base via a bearing, the top end of the rotating rod extending to the outside of the mounting base.

[0009] Preferably, the defining component includes a bevel gear, which is bolted to the outer wall of the bidirectional screw and the rotating rod, and the teeth of the bevel gear mesh with each other.

[0010] Preferably, the sealing assembly includes a conical groove, and a conical rubber sleeve is disposed inside the conical groove.

[0011] Preferably, a through groove is provided on the bottom inner wall of the conical groove, and a rubber sleeve is provided inside the through groove.

[0012] Preferably, flow grooves are provided on the top and bottom outer walls of both sides of the housing, and the flow grooves are connected to the through grooves.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. Through the set limiting components, when the operator rotates the rotating rod, the rotating rod immediately drives the bevel gear connected to it to start rotating. Under the synergistic effect of mechanical transmission, the bevel gear further drives another bevel gear that meshes with it, thereby driving the bidirectional screw to rotate synchronously. The rotation of the bidirectional screw will drive the limiting rings on the left and right sides to move towards each other, accurately organizing and reliably limiting wires of different specifications. This ingenious design not only achieves orderly organization of wires, but also significantly improves the stability of wire fixing, effectively avoiding connection loosening problems caused by vibration and other factors, thus greatly improving the applicability and reliability of the device in actual use and enhancing its overall practicality.

[0015] 2. Through the designed sealing components, when the wire is inserted into the through groove, the conical rubber sleeve and the rubber sleeve cooperate with each other and work together. This ingenious design allows the device to fix the wire while significantly improving the sealing effect. Even if the user makes a mistake or encounters other unexpected situations, such as water accidentally spraying onto the device, it can effectively prevent water from entering the device, thereby avoiding potential damage to the device body and providing a reliable guarantee for the stable operation of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a frequency converter for a screw air compressor proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of a frequency converter for a screw air compressor proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of a defined component structure for a frequency converter used in a screw air compressor, as proposed in this utility model.

[0019] Figure 4This is a schematic diagram of a sealing assembly structure for a frequency converter of a screw air compressor proposed in this utility model.

[0020] In the diagram: 1. Housing; 2. Main body; 3. Limiting component; 31. Mounting base; 32. Motion groove; 33. Rotating rod; 34. Bidirectional screw; 35. Bevel gear; 36. Moving plate; 37. Limiting ring; 4. Sealing component; 41. Conical groove; 42. Conical rubber sleeve; 43. Through groove; 44. Rubber sleeve; 45. Flow groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Please also see Figures 1 to 4 A frequency converter for a screw air compressor includes a housing 1, a main body 2 disposed inside the housing 1, limiting components 3 disposed at the top and bottom of the main body 2, and sealing components 4 disposed at the housing 1 and the top and bottom.

[0025] The limiting component 3 includes a mounting base 31, inside which are horizontally distributed motion grooves 32. A bidirectional screw 34 is movably mounted inside the motion grooves 32 via bearings. Moving plates 36 are threadedly connected to both ends of the outer wall of the bidirectional screw 34. A limit ring 37 is bolted to the outer wall of the adjacent side of the moving plate 36. When the bidirectional screw 34 is rotated, it can rotate within the motion grooves 32. During the rotation of the bidirectional screw 34, the threaded connection between the bidirectional screw 34 and the moving plate 36 allows the moving plate 36 to drive the limit ring 37, thereby effectively organizing the wire and improving the stability of the wire during fixing. The limiting component 3 also includes a rotating rod 33. 3 is movably mounted on the top inner wall of the mounting base 31 via bearings. The top end of the rotating rod 33 extends to the outside of the mounting base 31. When the rotating rod 33 is rotated, it can rotate inside the mounting base 31, thereby providing power transmission for the rotation of the bevel gear 35. The limiting component 3 includes a bevel gear 35, which is fixed to the outer wall of the double-acting screw 34 and the rotating rod 33 by bolts. The teeth of the bevel gears 35 mesh with each other. When the rotating rod 33 is rotated, it can use the action of the bevel gear 35 to drive the other bevel gear 35 to rotate by meshing with it, thereby providing power transmission for the rotation of the double-acting screw 35.

[0026] See Figure 2 and Figure 4 The sealing component 4 includes a conical groove 41, inside which a conical rubber sleeve 42 is provided. The opening of the conical groove 41 and the setting of the conical rubber sleeve 42 can provide a sealing effect for the wire. A through groove 43 is opened on the bottom inner wall of the conical groove 41, inside which a rubber sleeve 44 is provided. The through groove 43 and the rubber sleeve 44 inside the through groove 43 can improve the sealing performance when the wire is inserted. Flow grooves 45 are opened on the top and bottom outer walls on both sides of the housing 1. The flow grooves 45 are connected to the through grooves 43. When external water enters the interior of the device, the water can be drained through the through grooves 43.

[0027] Working principle: In use, first insert the wire between the conical rubber sleeve 42 and the rubber sleeve 44. The wire fits tightly against the conical rubber sleeve 42 and the rubber sleeve 44, which significantly enhances the stability of the wire during fixation and prevents loosening. On the other hand, when water is spilled outside the device, the water can flow out of the device naturally along the through groove 43. Then, insert the wire further into the body 2 and fix it. Then, rotate the rotating rod 33 according to the user's requirements. The rotating rod 33 rotates through the conical gear 35. Its power is transmitted through the conical gear 35 and another meshing conical gear 35, driving the conical gear 35 to rotate. During the rotation of the conical gear 35, it will drive the bidirectional screw 34 to rotate. When the bidirectional screw 34 is in use, the bidirectional screw 34 uses the threaded connection with the moving plate 36 to make the moving plate 36 drive the limiting ring 37 to move. When the limiting rings 37 come close to each other, they will arrange and fix the wire, improving the aesthetics and stability of the wire assembly.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A frequency converter for a screw air compressor, comprising a housing (1), characterized in that, The housing (1) is provided with a main body (2) inside, and the top and bottom of the main body (2) are provided with limiting components (3), and the housing (1) and the top and bottom are provided with sealing components (4). The limiting component (3) includes a mounting base (31), the mounting base (31) has a horizontally distributed motion groove (32) inside, a bidirectional screw (34) is movably mounted inside the motion groove (32) via a bearing, a movable plate (36) is threaded to both ends of the outer wall of the bidirectional screw (34), and a limit ring (37) is installed on the outer wall of the adjacent side of the movable plate (36) via bolts.

2. A frequency converter for a screw air compressor according to claim 1, characterized in that, The limiting component (3) also includes a rotating rod (33) which is movably mounted on the top inner wall of the mounting base (31) via a bearing, and the top end of the rotating rod (33) extends to the outside of the mounting base (31).

3. A frequency converter for a screw air compressor according to claim 1, characterized in that, The limiting component (3) includes a bevel gear (35) which is fixed to the outer wall of the double-acting screw (34) and the rotating rod (33) by bolts, and the teeth of the bevel gear (35) mesh with each other.

4. A frequency converter for a screw air compressor according to claim 1, characterized in that, The sealing assembly (4) includes a conical groove (41) and a conical rubber sleeve (42) is disposed inside the conical groove (41).

5. A frequency converter for a screw air compressor according to claim 4, characterized in that, A through groove (43) is provided on the bottom inner wall of the conical groove (41), and a rubber sleeve (44) is provided inside the through groove (43).

6. A frequency converter for a screw air compressor according to claim 1, characterized in that, The outer walls of the top and bottom sides of the housing (1) are provided with flow grooves (45), which are connected to the through groove (43).

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