Variable frequency energy-saving breaker

Abstract

The utility model discloses a kind of frequency conversion energy-saving smashing machines, belong to the technical field of smashing machine, comprising: rack, smashing machine, feed tank, frequency converter, the rack top is workstation;The smashing machine is set in workstation top one end, top is feed inlet, and smashing machine is driven by motor set in another end of workstation;The feed tank is set in smashing machine feed inlet top, and discharge port is set to outer side, the discharge port outside is set inductive switch, for sensing whether there is waste material to be input, to judge working condition, and send signal;The frequency converter is set in rack side, and is connected with motor, and the working frequency of motor is controlled by receiving the signal sent by inductive switch, and frequency is reduced to half of working time frequency when no need to work smashing machine.The utility model is linked by inductive switch and frequency converter in reducing equipment no-load speed, reduce the consumption of reactive power, save energy, reduce mechanical wear, prolong service life.

Description

Technical Field

[0001] This utility model relates to the field of crusher technology, specifically to a variable frequency energy-saving crusher. Background Technology

[0002] Crushers are common crushing equipment in modern industrial production, widely used in mining, building materials, chemicals, and many other fields. Their core working principle is that a motor drives the crushing components to rotate at high speed, using impact and shearing forces to crush materials to the required particle size. Currently, most known crushers typically use a mains frequency power supply for direct start-up and constant speed operation. While this control method is simple in structure and low in cost, it results in significant energy waste during actual production. Because the production process is not continuous, the crusher is often in an idle or lightly loaded standby state (such as during feeding intervals or process pauses). However, under traditional control modes, the motor maintains its rated high speed regardless of whether material is entering, consuming a large amount of electrical energy and causing unnecessary energy loss. This not only increases the production costs of enterprises but also contradicts the current national industrial policies advocating green manufacturing and energy conservation and emission reduction. Utility Model Content

[0003] The purpose of this utility model is to provide a variable frequency energy-saving crusher to solve the above problems. By working in conjunction with the induction switch and the frequency converter, the working status is automatically identified and the motor speed is adjusted, thereby achieving significant energy savings.

[0004] Technical Solution: This utility model provides a variable frequency energy-saving crusher, including: a frame, a crusher, a feed box, and a frequency converter. The frame has a worktable on top. The crusher is located at one end of the worktable, with a feed inlet at the top. The crusher is driven by a motor located at the other end of the worktable. The feed box is located above the crusher's feed inlet, with a discharge port on its outer side. A sensor switch is located outside the discharge port to sense whether waste material is being fed in, thereby determining the working status and sending a signal. The frequency converter is located beside the frame and connected to the motor. It controls the motor's operating frequency by receiving the signal from the sensor switch. When the crusher is not needed, the frequency is reduced to half of the operating frequency to achieve energy saving.

[0005] Furthermore, in the aforementioned variable frequency energy-saving crusher, the discharge port is equipped with a guide mechanism with a sieve structure to facilitate material guidance and prevent spillage.

[0006] Furthermore, in the aforementioned variable frequency energy-saving crusher, the induction switch consists of two parallel induction rods, respectively positioned at both ends of the material guiding mechanism. This effectively detects the input of larger-sized materials, improving the reliability of the sensing.

[0007] Furthermore, in the aforementioned variable frequency energy-saving crusher, the motor is an ultra-high efficiency three-phase asynchronous motor.

[0008] Furthermore, in the aforementioned variable frequency energy-saving crusher, a control box is provided on the outside of the crusher.

[0009] Furthermore, in the aforementioned variable frequency energy-saving crusher, the variable frequency drive is equipped with a control panel for parameter setting, status monitoring, and manual operation.

[0010] Furthermore, in the aforementioned variable frequency energy-saving crusher, the motor operates at a frequency of 50Hz when the crusher is working, and is adjusted to 25Hz when the crusher is not in use.

[0011] As can be seen from the above technical solution, this utility model has the following beneficial effects: The variable frequency energy-saving crusher described in this utility model, through the linkage control of the induction switch and the frequency converter, automatically reduces the motor speed to half when the equipment is unloaded, which greatly reduces the consumption of reactive power. Actual tests show that the energy saving rate can reach more than 24%, and the economic benefits are obvious; the fully automatic induction control realizes the intelligent working cycle of "full speed operation when feeding and low speed energy saving when no material", without manual intervention, thus optimizing the user experience; the soft start / soft stop function of the frequency converter reduces the impact of the starting current on the power grid and mechanical transmission components; at the same time, low-speed standby also reduces mechanical wear and extends the overall service life of the equipment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a variable frequency energy-saving crusher according to the present invention.

[0013] In the diagram: 1. Stand; 2. Crusher; 3. Feed box; 4. Frequency converter; 5. Control box; 21. Motor; 31. Discharge port; 32. Induction switch; 33. Material guiding mechanism. Detailed Implementation

[0014] Example

[0015] like Figure 1The variable frequency energy-saving crusher shown includes: a frame 1, a crusher 2, a feed box 3, and a frequency converter 4. The frame 1 serves as the overall support, and a worktable is located on top of the frame 1. The crusher 2 is located at one end above the worktable, with a feed inlet at the top. A motor 21 is located at the other end of the worktable to balance the overall weight, and the crusher 2 is driven by the motor 21. The feed box 3 is located above the feed inlet of the crusher 2, with a discharge port 31 on the outer side. An induction switch 32 is located outside the discharge port 31 to sense whether waste material is being fed in, thereby determining the working status and sending a signal. The frequency converter 4 is located beside the frame 1 and connected to the motor 21. It controls the working frequency of the motor 21 by receiving the signal from the induction switch 32. When the crusher 2 is not needed, the frequency is reduced to half of the working frequency to achieve energy saving.

[0016] like Figure 1 The variable frequency energy-saving crusher shown has a feeding port 31 equipped with a sieve-structured guiding mechanism 33 for receiving and guiding materials to prevent material from splashing out during feeding. The induction switch 32 consists of two parallel induction rods (such as infrared photoelectric sensors or capacitive sensors) respectively set at both ends of the guiding mechanism 33. When the operator feeds materials into the feeding port 31, the materials will block the induction signal, and the induction switch 32 will then detect the feeding action.

[0017] In this embodiment, the motor 21 is an ultra-high efficiency three-phase asynchronous motor.

[0018] In this embodiment, a control box 5 is provided on the outside of the crusher 2.

[0019] In this embodiment, the frequency converter 4 is equipped with a control panel for parameter setting, status monitoring and manual operation.

[0020] Working process: In the default standby state, the frequency converter 4 outputs a 25Hz power supply to drive the motor 21 to run at low speed. When material is fed into the discharge port 31 and triggers the induction switch 32, the induction switch 32 immediately sends a high-level signal to the frequency converter 4. After receiving this signal, the frequency converter 4 linearly increases the output frequency from 25Hz to 50Hz in a very short time (e.g., within 0.5 seconds), and the motor 21 accelerates to the rated speed, and the crusher 2 enters the full-power crushing state. After the last batch of material is fed in, if the induction switch 32 does not detect the signal again within the set delay (e.g., 5-10 seconds, adjustable), it will send a low-level signal to the frequency converter 4. The frequency converter 4 then controls the output frequency to smoothly decrease to 25Hz, and the equipment re-enters the low-speed energy-saving standby state.

[0021] It should be noted that the above description is merely a technical solution of the utility model and not a limitation. Although the present utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of the utility model without departing from the scope of the present utility model, and all such modifications and substitutions should be covered within the scope of the claims of the present utility model.

Claims

1. A variable frequency energy saving breaker, characterized in that: include: A frame (1) is provided, with a workbench on top of the frame (1); The crusher (2) is located at one end of the workbench, with the feed inlet at the top. The crusher (2) is driven by a motor (21) located at the other end of the workbench. Feed box (3), the feed box (3) is set above the feed inlet of the crusher (2), and a discharge port (31) is set on the outer side. An induction switch (32) is set on the outside of the discharge port (31) to sense whether waste material is put in, to determine the working status, and to send a signal. The frequency converter (4) is located on the side of the stand (1) and connected to the motor (21). It controls the working frequency of the motor (21) by receiving the signal from the induction switch (32). When the crusher (2) is not working, the frequency is reduced to half of the working frequency.

2. A variable frequency energy saving disintegrator as claimed in claim 1 wherein: The discharge port (31) is equipped with a guide mechanism (33) with a sieve structure.

3. The variable frequency energy-saving crusher according to claim 1, characterized in that: The induction switch (32) consists of two parallel induction rods, which are respectively set at both ends of the material guiding mechanism (33).

4. The variable frequency energy-saving crusher according to claim 1, characterized in that: The motor (21) is an ultra-high efficiency three-phase asynchronous motor.

5. The variable frequency energy-saving crusher according to claim 1, characterized in that: A control box (5) is installed on the outside of the crusher (2).

6. The variable frequency energy-saving crusher according to claim 1, characterized in that: The frequency converter (4) is equipped with a control panel.

7. The variable frequency energy-saving crusher according to claim 1, characterized in that: The motor (21) operates at a frequency of 50 Hz when the crusher (2) is working, and is adjusted to 25 Hz when the crusher (2) is not working.

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