Split type motor soft starter

Abstract

The utility model discloses a split type motor soft starter, which comprises a motor soft starter body, an air inlet assembly and an air exhaust assembly, the air inlet assembly is arranged at the bottom of one side of a casing of the motor soft starter body, and the air exhaust assembly is arranged at the bottom of the casing of the motor soft starter body; the air inlet assembly comprises a draft fan, a threaded connector, a threaded cover, a metal protective net and a dust filtering gauze element. The soft starter mechanism of the motor is optimized, a set of soft starter better in use stability is provided for work of the motor, the soft starter can be suitable for being used for the motor in an industrial environment and outdoor work, the air inlet assembly is provided with a threaded detachable filtering structure, air flow entering the soft starter body of the motor can be filtered, and the filtering effect is good. And the use stability of the motor soft starter body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of motor soft starters, in particular to a split motor soft starter. Background Art

[0002] When the motor is in use, it is often equipped with a motor soft starter to control and start the motor. Generally, it gradually increases the current and torque of the motor to achieve a smooth starting and stopping process, so as to reduce the mechanical and electrical stress of the motor and the system, extend the service life of the motor, and provide better protection and control characteristics.

[0003] However, the air inlet and outlet heat exchange components of the existing motor soft starter are usually directly exposed opening structures. When used in an environment with a high dust density in the air, a large amount of dust will enter and adhere to the electrical module inside the starter, greatly affecting the stability of the starter.

[0004] Existing motor soft starters have the following disadvantages: the existing heat dissipation structure has exposed air inlet and outlet. When the motor soft starter is used in a workplace with high air dust density or serious dust raising, the electrical module inside the starter is easily covered by dust and foreign matter, causing the heat dissipation and stability of the electrical module to be greatly affected. For this reason, we propose a split motor soft starter. Utility Model Content

[0005] The main purpose of the utility model is to provide a split motor soft starter, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A split motor soft starter comprises a motor soft starter body, an air inlet assembly and an air exhaust assembly, wherein the air inlet assembly is arranged at the bottom of one side of a casing of the motor soft starter body, and the air exhaust assembly is arranged at the bottom of the casing of the motor soft starter body;

[0008] The air inlet assembly comprises an exhaust fan, a threaded interface, a threaded cover, a metal protective net and a dust filter gauze.

[0009] Furthermore, a threaded interface is provided at the exhaust end of the exhaust fan, the threaded cover is provided on the threaded interface, an air inlet is opened through the bottom of one side of the casing of the motor soft starter body, and the exhaust fan is fixedly installed on the inner side of the air inlet by bolts.

[0010] Furthermore, the threaded cover is a hollow structure, the metal protective net is fixedly connected to the threaded cover, and the dust filter mesh is fixedly glued to the inner side of the metal protective net.

[0011] Furthermore, the exhaust component is a conical nozzle and vanes made of rubber material, the vanes are arranged at equal distances along the bottom of the conical nozzle, an exhaust port is opened through the bottom of the casing of the motor soft starter body, the conical nozzle is located at the bottom of the exhaust port, and the outer periphery of the top of the conical nozzle is glued and fixed to the casing of the motor soft starter body.

[0012] Furthermore, a wiring opening is provided on the top of the other side of the casing of the motor soft starter body.

[0013] Compared with the prior art, the utility model has the following beneficial effects: through the assembly consisting of the motor soft starter body, the air inlet assembly and the exhaust assembly, the soft starter mechanism of the motor is optimized, and a set of soft starters with better use stability is provided for the motor, which can be suitable for use in industrial environments and outdoor operations. By arranging a threaded and detachable filter structure on the air inlet assembly, the wind flow entering the motor soft starter body can be filtered to avoid the entry of dust and foreign matter in the complex external environment. After a period of use, it can be flexibly disassembled for cleaning and maintenance. By setting a conical nozzle with vanes, the exhaust port can be adjusted according to the motor soft starter body. The internal air pressure opens and contracts flexibly, and when the internal air pressure of the motor soft starter body increases, the vanes of the conical nozzle are pressed open to discharge the internal air pressure of the motor soft starter body. During the period when the internal air pressure of the motor soft starter body is constant with the external pressure, the vanes are naturally closed to close the exhaust port, which can effectively prevent the entry of external foreign matter and dust, greatly ensure the stability of the use of the motor soft starter body, and solve the problem that when the existing motor soft starter with a heat dissipation structure with exposed air inlet and outlet is used in a workplace with a high air dust density or serious dust raising, the electrical module inside the starter is easily covered by dust and foreign matter, causing the heat dissipation and stability of the electrical module to be greatly affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of a split motor soft starter.

[0015] Figure 2 The utility model is an internal schematic diagram of a split motor soft starter.

[0016] Figure 3 The utility model is a schematic diagram of the bottom of a motor soft starter body of a split motor soft starter.

[0017] Figure 4 The utility model is a schematic diagram of an air inlet component of a split motor soft starter.

[0018] Figure 5 The utility model is a schematic diagram of the exhaust fan structure of a split motor soft starter.

[0019] Figure 6The utility model is a schematic diagram of the threaded cover structure of a split motor soft starter.

[0020] Figure 7 The utility model is a split motor soft starter Figure 3 Enlarged schematic diagram at point A in the middle.

[0021] In the figure: 1. Motor soft starter body; 2. Air inlet; 3. Air inlet assembly; 301. Exhaust fan; 302. Threaded interface; 303. Threaded cover; 304. Metal protective net; 305. Dust filter mesh; 4. Exhaust assembly; 401. Conical nozzle; 402. Vanes; 5. Exhaust port; 6. Wiring port. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-7 As shown, a split motor soft starter includes a motor soft starter body 1, an air inlet assembly 3 and an exhaust assembly 4, wherein the air inlet assembly 3 is arranged at the bottom of one side of the casing of the motor soft starter body 1, and the exhaust assembly 4 is arranged at the bottom of the casing of the motor soft starter body 1; the air inlet assembly 3 includes an exhaust fan 301, a threaded interface 302, a threaded cover 303, a metal protective net 304 and a dust filter mesh 305.

[0024] Among them, the exhaust end of the exhaust fan 301 is provided with a threaded interface 302, and the threaded cover 303 is covered on the threaded interface 302. An air inlet 2 is opened through the bottom of one side of the casing of the motor soft starter body 1, and the exhaust fan 301 is fixed to the inner side of the air inlet 2 by bolts.

[0025] The threaded cover 303 is a hollow structure, the metal protective net 304 is fixedly connected to the threaded cover 303 , and the dust filter mesh 305 is fixedly glued to the inner side of the metal protective net 304 .

[0026] Among them, the exhaust component 4 is a conical nozzle 401 and a vane 402 made of rubber material, the vane 402 is arranged at equal distances along the bottom of the conical nozzle 401, and an exhaust port 5 is opened through the bottom of the casing of the motor soft starter body 1. The conical nozzle 401 is located at the bottom of the exhaust port 5, and the outer periphery of the top of the conical nozzle 401 is glued and fixed to the casing of the motor soft starter body 1.

[0027] A wiring opening 6 is provided at the top of the other side of the casing of the motor soft starter body 1 .

[0028] It should be noted that the utility model is a split-type motor soft starter. When working, the motor user inserts the electric control circuit of the motor in the work site into the motor soft starter body 1 through the wiring port 6, connects the electrical module inside the motor soft starter body 1, and connects the power circuit of the electrical module inside the motor soft starter body 1 to the surrounding power supply facilities to form a split-type motor soft starter, and blocks the gap at the wiring port 6 with fireproof mud to ensure the sealing of the wiring port 6. Then, the motor user can control and start the motor based on the motor soft starter body 1;

[0029] The exhaust fan 301 sucks air from the outside to achieve the internal cooling of the motor soft starter body 1 by blowing air. When a large amount of air enters the motor soft starter body 1 and the air pressure increases, the vanes 402 of the conical nozzle 401 on the exhaust port 5 are opened due to the elasticity of the rubber, so that the high-pressure air inside the motor soft starter body 1 is discharged from the exhaust port 5 to the outside, and the heat dissipation treatment of the electrical modules inside the motor soft starter body 1 is achieved in turn. When the operation stops, the exhaust fan 301 stops working, and the air pressure inside the motor soft starter body 1 is constant with the external pressure. The vanes 402 are naturally closed, so that the exhaust port 5 is closed, which can effectively prevent the entry of foreign matter and dust from the outside, so that the motor soft starter has better stability in a high-dust industrial environment or outdoor use;

[0030] After using it for a period of time, the worker can open the box door of the motor soft starter body 1, rotate and remove the threaded cover 303, clean and maintain the foreign dust attached to the metal protective net 304 and the dust filter mesh 305, and after the maintenance is completed, reassemble the threaded interface 302 on the exhaust fan 301 to ensure the normal air intake and dust filtering of the exhaust fan 301.

[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A split motor soft starter, comprising a motor soft starter body (1), an air inlet assembly (3) and an air exhaust assembly (4), characterized in that: The air inlet assembly (3) is arranged at the bottom of one side of the casing of the motor soft starter body (1), and the air exhaust assembly (4) is arranged at the bottom of the casing of the motor soft starter body (1); The air inlet assembly (3) comprises an exhaust fan (301), a threaded interface (302), a threaded cover (303), a metal protective net (304) and a dust filter net (305); the exhaust end of the exhaust fan (301) is provided with a threaded interface (302); the threaded cover (303) is covered on the threaded interface (302); an air inlet (2) is provided through the bottom of one side of the casing of the motor soft starter body (1); the exhaust fan (301) is fixedly installed on the inner side of the air inlet (2) by bolts; the threaded cover (303) is a hollow structure; the metal protective net (304) is fixedly connected to the threaded cover (303); and the dust filter net (305) is fixedly glued to the inner side of the metal protective net (304); The exhaust component (4) is a conical nozzle (401) and a vane (402) made of rubber material, wherein the vane (402) is arranged at equal distances along the bottom of the conical nozzle (401), an exhaust port (5) is provided through the bottom of the casing of the motor soft starter body (1), the conical nozzle (401) is located at the bottom of the exhaust port (5), and the outer periphery of the top of the conical nozzle (401) is glued and fixed to the casing of the motor soft starter body (1).

2. A split motor soft starter according to claim 1, characterized in that: A wiring opening (6) is provided at the top of the other side of the casing of the motor soft starter body (1).

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