Double-frequency-conversion differential control structure of horizontal screw centrifuge

Abstract

A double-frequency-conversion differential control structure of a horizontal screw centrifuge comprises a controller used for double-frequency-conversion differential control and a wiring terminal arranged on the outer side of the bottom end of the controller, and further comprises an installation assembly, and the installation assembly is arranged on the rear side of the controller. The mounting assembly comprises a mounting back plate, fixing bolts, bolt holes, a bearing plate, elastic fixing buckles, limiting blocks, a first inclined surface, a vertical surface, a limiting groove and a second inclined surface, the mounting back plate is mounted at a to-be-mounted position through the fixing bolts, the bearing plate is arranged on one side of the bottom end of the mounting back plate, and the elastic fixing buckles are arranged in the middles of the two ends of the mounting back plate; a limiting block is arranged at the position, corresponding to the elastic fixing buckle, of the controller, a first inclined face is arranged on the rear side of the limiting block, a vertical face is arranged on the front portion of the limiting block, and a second inclined face is arranged on the outer side of one end of the elastic fixing buckle. Operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the field of differential control, in particular to a double-frequency variable differential control structure for a horizontal screw centrifuge. Background Technique

[0002] A variable-frequency drive (VFD) is a power control device that applies frequency conversion technology and microelectronics technology to control an AC motor by changing the frequency of the motor's working power supply. [1]

[0003] The variable-frequency drive mainly consists of rectification (AC to DC), filtering, inversion (DC to AC), a braking unit, a drive unit, a detection unit, a microprocessing unit, etc. The variable-frequency drive adjusts the voltage and frequency of the output power supply by the on-off of the internal IGBT, provides the required power supply voltage according to the actual needs of the motor, and thus achieves the purpose of energy saving and speed regulation. In addition, the variable-frequency drive also has many protection functions, such as overcurrent, overvoltage, overload protection, etc. With the continuous improvement of industrial automation, the variable-frequency drive has also been widely used.

[0004] In the existing double-frequency variable differential control structure of a horizontal screw centrifuge, the controller is generally installed by bolt fixation. When performing maintenance, repair, or replacement, it is inconvenient to disassemble, the operation is cumbersome, and it is not conducive to use. Content of the Utility Model

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a double-frequency variable differential control structure for a horizontal screw centrifuge, which effectively solves the problem that the controller used in the existing double-frequency variable differential control structure of a horizontal screw centrifuge is generally installed by bolt fixation, is inconvenient to disassemble when performing maintenance, repair, or replacement, the operation is cumbersome, and it is not conducive to use.

[0006] To achieve the above object, the utility model provides the following technical solution: The utility model includes a controller for double-frequency variable differential control and a wiring terminal arranged on the outer side of the bottom end of the controller, and further includes an installation component, and the installation component is arranged at the rear side of the controller;

[0007] The installation component includes an installation backplane, fixing bolts, bolt holes, a bearing plate, elastic fixing buckles, limit blocks, a first inclined surface, a vertical surface, a limit groove, and a second inclined surface. The installation backplane is installed at the position to be installed through the fixing bolts. A bearing plate is arranged on one side of the bottom end of the installation backplane. Elastic fixing buckles are arranged in the middle of both ends of the installation backplane. Limit blocks are arranged at the positions of the controller corresponding to the elastic fixing buckles. A first inclined surface is arranged at the rear side of the limit block, a vertical surface is arranged at the front part of the limit block, and a second inclined surface is arranged on the outer side of one end of the elastic fixing buckle.

[0008] Preferably, the first inclined surface and the second inclined surface are parallel inclined surfaces.

[0009] Preferably, bolt holes are provided at positions corresponding to the fixing bolts on the mounting backboard.

[0010] Preferably, at least four fixing bolts are provided and are located at the four corners of the mounting backboard.

[0011] Preferably, a limiting groove is provided at a position corresponding to the limiting block on the elastic fixing buckle.

[0012] Preferably, a convex eaves for limiting the top of the controller is provided at the top end of the mounting backboard.

[0013] Beneficial effects: When the present utility model is installed, the mounting backboard is installed at the position to be installed through four fixing bolts. After the installation is completed, the bottom end of the controller is placed on the bearing plate, and the controller is pushed towards the mounting backboard. When the first inclined surface of the limiting block on the controller contacts the second inclined surface, the limiting block will push the elastic fixing buckle to deform outward to a certain extent until the limiting block completely enters the limiting groove of the elastic fixing buckle. The elastic fixing buckle is clamped on the limiting block under the action of the reset elastic force to complete the limiting. When disassembling, push the elastic fixing buckle outward to separate the limiting groove, and the controller can be pulled out, which is convenient for the installation, use, maintenance or repair disassembly of the controller, and the operation is simple and convenient. Description of the Drawings

[0014] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a side view of the present utility model;

[0017] Figure 3 is a top view of the present utility model;

[0018] Reference numerals in the drawings: 1, controller; 2, terminal; 2, mounting assembly; 3, mounting backboard; 301, fixing bolt; 302, bolt hole; 303, bearing plate; 304, elastic fixing buckle; 305, limiting block; 306, first inclined surface; 307, vertical surface; 308, limiting groove; 309, second inclined surface 310. Specific Embodiments

[0019] The following further elaborates in detail on the specific embodiments of the present utility model in conjunction with the attached Figures 1-3 drawings.

[0020] Example 1, consisting of Figures 1-3Provided is a double-frequency differential speed control structure for a horizontal screw centrifuge, which includes a controller 1 for double-frequency differential speed control and a wiring terminal 2 arranged on the outer side of the bottom end of the controller 1. It also includes an installation component 3, an installation backboard 301, fixing bolts 302, bolt holes 303, a bearing plate 304, an elastic fixing buckle 305, a limiting block 306, a first inclined surface 307, a vertical surface 308, a limiting groove 309 and a second inclined surface 310. An installation component 3 is arranged at the rear side of the controller 1;

[0021] The installation component 3 includes an installation backboard 301, fixing bolts 302, bolt holes 303, a bearing plate 304, an elastic fixing buckle 305, a limiting block 306, a first inclined surface 307, a vertical surface 308, a limiting groove 309 and a second inclined surface 310. The installation backboard 301 is installed at the position to be installed through the fixing bolts 302. A bearing plate 304 is arranged on one side of the bottom end of the installation backboard 301. Elastic fixing buckles 305 are arranged in the middle of both ends of the installation backboard 301. Limiting blocks 306 are arranged at the positions corresponding to the elastic fixing buckles 305 on the controller 1. A first inclined surface 307 is arranged at the rear side of the limiting block 306. A vertical surface 308 is arranged at the front part of the limiting block 306. A second inclined surface 310 is arranged on the outer side of one end of the elastic fixing buckle 305.

[0022] During specific use: When installing this utility model, the installation backboard 301 is installed at the position to be installed through four fixing bolts 302. After installation, the bottom end of the controller 1 is placed on the bearing plate 304, and the controller 1 is pushed towards the installation backboard 301. When the first inclined surface 307 of the limiting block 306 on the controller 1 contacts the second inclined surface 310, the limiting block 306 will push the elastic fixing buckle 305 to deform outward to a certain extent until the limiting block 306 completely enters the limiting groove 309 of the elastic fixing buckle 305. The elastic fixing buckle 305 is clamped on the limiting block 306 under the action of the reset elastic force to complete the limiting. When disassembling, push the elastic fixing buckle 305 outward to separate the limiting groove 309, and then the controller 1 can be pulled out, which is convenient for the installation and use of the controller 1 and the disassembly during maintenance or repair, and the operation is simple and convenient.

[0023] Beneficial effects: The structure of this utility model is novel and ingeniously conceived, which is convenient for the installation and use of the controller 1 and the disassembly during maintenance or repair, and the operation is simple and convenient.

[0024] Embodiment 2

[0025] In Embodiment 1, the cooperation between the first inclined surface 307 and the second inclined surface 310 is inconvenient. Referring to Figure 1 , as another preferred embodiment, the difference from Embodiment 1 is that the first inclined surface 307 and the second inclined surface 310 are parallel arranged inclined surfaces, which is convenient for the cooperation and use of the first inclined surface 307 and the second inclined surface 310.

[0026] Embodiment III

[0027] In Embodiment I, the installation and use of the installation backboard 301 are inconvenient. Refer to Figure 1 , as another preferred embodiment, the difference from Embodiment I is that bolt holes 303 are provided at the positions of the fixing bolts 302 corresponding to the installation backboard 301, which facilitates the installation and use of the installation backboard 301.

[0028] Embodiment IV

[0029] In Embodiment I, the fixing effect of the fixing bolts 302 is insufficient. Refer to Figure 1 , as another preferred embodiment, the difference from Embodiment I is that the number of the fixing bolts 302 is at least four and they are located at the four corners of the installation backboard 301 to ensure the fixing effect of the fixing bolts 302.

[0030] Embodiment V

[0031] In Embodiment I, the cooperation between the elastic fixing buckle 305 and the limiting block 306 is inconvenient. Refer to Figure 1 , as another preferred embodiment, the difference from Embodiment I is that a limiting groove 309 is provided at the position of the elastic fixing buckle 305 corresponding to the limiting block 306, which facilitates the cooperation and limiting between the elastic fixing buckle 305 and the limiting block 306.

[0032] Embodiment VI

[0033] In Embodiment I, the top limiting of the controller 1 is inconvenient. Refer to Figure 1 , as another preferred embodiment, the difference from Embodiment I is that a convex eaves for limiting the top of the controller 1 is provided at the top end of the installation backboard 301, which facilitates the top limiting of the controller 1.

[0034] Those skilled in the art connect all the electrical components in this case to their adapted power supplies through wires, and should select appropriate controllers and encoders according to the actual situation to meet the control requirements. For the specific connection and control sequence, the electrical connection should be completed according to the sequence of the working order among the electrical components in the following working principle. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of the electrical control will be made.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A double-frequency conversion differential speed control structure for a horizontal screw centrifuge, comprising a controller (1) for double-frequency conversion differential speed control and a wiring terminal (2) arranged outside the bottom end of the controller (1), characterized in that: It also includes a mounting assembly (3), wherein the mounting assembly (3) is arranged on the rear side of the controller (1); The mounting assembly (3) comprises a mounting back plate (301), a fixing bolt (302), a bolt hole (303), a bearing plate (304), an elastic fixing buckle (305), a limiting block (306), a first inclined surface (307), a vertical surface (308), a limiting groove (309) and a second inclined surface (310); the mounting back plate (301) is mounted at a position to be mounted by means of the fixing bolt (302); a bearing plate (304) is arranged on one side of the bottom end of the mounting back plate (301); elastic fixing buckles (305) are arranged at the middle of both ends of the mounting back plate (301); a limiting block (306) is arranged at a position of the controller (1) corresponding to the elastic fixing buckle (305); a first inclined surface (307) is arranged on the rear side of the limiting block (306); a vertical surface (308) is arranged on the front of the limiting block (306); and a second inclined surface (310) is arranged on the outer side of one end of the elastic fixing buckle (305).

2. A double frequency conversion differential speed control structure for a horizontal screw centrifuge according to claim 1, characterized in that: The first inclined plane (307) and the second inclined plane (310) are inclined planes arranged in parallel.

3. A double frequency conversion differential speed control structure for a horizontal screw centrifuge according to claim 1, characterized in that: The mounting back plate (301) is provided with a bolt hole (303) at a position corresponding to the fixing bolt (302).

4. A double frequency conversion differential speed control structure for a horizontal screw centrifuge according to claim 1, characterized in that: The number of the fixing bolts (302) is at least four and they are located at the four corners of the mounting back plate (301).

5. The double frequency conversion differential speed control structure of a horizontal screw centrifuge according to claim 1, characterized in that: The elastic fixing buckle (305) is provided with a limiting groove (309) at a position corresponding to the limiting block (306).

6. A double frequency conversion differential speed control structure for a horizontal screw centrifuge according to claim 1, characterized in that: The top of the mounting back plate (301) is provided with a convex eave for limiting the top position of the controller (1).

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