A speed-adjustable rolling screen for kitchen waste treatment equipment

Abstract

The invention discloses an adjustable speed rolling screen for kitchen waste treatment equipment, comprising a rolling screen body corresponding to a crusher discharge port, wherein the driving motor in the rolling screen body is a three-phase AC variable frequency motor M, the three-phase AC variable frequency motor M is connected to a frequency converter, the frequency converter is connected to a power grid, the frequency converter is connected to a relay, and the control ends of the frequency converter and the relay are connected to a PLC controller. The invention has the following beneficial effects: the variable frequency start of the rolling screen can be controlled by a PLC controller and a frequency converter, and the forward and reverse rotation of the rolling screen can be controlled. The rolling screen can also be started smoothly under load, so that the screening rate can be improved, and the cleaning, debugging and use are convenient.

Description

Technical Field

[0001] The invention relates to the technical field of restaurant and kitchen waste treatment equipment, and in particular to an adjustable speed rolling screen used in restaurant and kitchen waste treatment equipment. Background Art

[0002] With the acceleration of economic and urbanization, the amount of urban domestic waste is increasing, and the proportion of food waste is increasing, accounting for 37% to 62% of urban domestic waste. Improper treatment of food waste can easily lead to deterioration and corruption, breeding of harmful microorganisms and mosquitoes and flies, producing a large amount of toxins, and emitting foul odors, seriously polluting the water and air environment.

[0003] Kitchen waste refers to leftovers, vegetables, roots and leaves, fruit and vegetable peels, discarded animal tissues and other kitchen waste and waste edible oils generated by households, schools, public canteens of government agencies and the catering industry. The main components of kitchen waste include organic substances such as protein, starch, dietary fiber, and animal fat. Compared with other garbage, it has the characteristics of high water content, high organic matter ratio, high oil content, and high salt content. It is easy to rot and ferment, and breed bacteria. It has the typical dual characteristics of resources and waste.

[0004] The food waste treatment equipment is a device for processing food waste. It mainly uses a crusher to squeeze and crush the food waste, and then uses a roller screen to screen the plastic in the food waste.

[0005] The existing roller screen cannot adjust the speed in multiple stages, resulting in a low screening rate.

[0006] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0007] In view of the above technical problems in the related art, the present invention proposes an adjustable speed roller screen for a food waste treatment device, wherein a speed regulating motor can be controlled by a speed regulator to enable the roller screen to rotate faster or slower.

[0008] To achieve the above technical objectives, the technical solution of the present invention is implemented as follows:

[0009] A speed-adjustable rolling screen for kitchen waste treatment equipment comprises a rolling screen body corresponding to a crusher discharge port, wherein a driving motor in the rolling screen body is a three-phase AC variable frequency motor M, wherein the three-phase AC variable frequency motor M is connected to the U, V and W terminals of a frequency converter, wherein the L1, L2 and L3 terminals of the frequency converter are connected to a power grid, wherein the MI1 terminal of the frequency converter is connected to the DCM terminal of the frequency converter via a relay KA1, wherein the MI2 terminal of the frequency converter is connected to the DCM terminal of the frequency converter via a relay KA2, wherein the MI3 terminal of the frequency converter is connected to the DCM terminal of the frequency converter via a relay KA3, wherein the MI4 terminal of the frequency converter is connected to the DCM terminal of the frequency converter via a relay KA4, and wherein the ACI, ACM, RA and RC terminals of the frequency converter, the control end of the relay KA1, the control end of the relay KA2, the control end of the relay KA3 and the control end of the relay KA4 are all connected to a PLC controller.

[0010] Furthermore, the PLC controller is connected to an Internet of Things module.

[0011] Furthermore, the Internet of Things module includes a 4G wireless network card module, an RJ45 network port module, and an RS485 serial port module.

[0012] Furthermore, the PLC controller is connected to a touch screen.

[0013] Furthermore, a belt is provided between the crusher discharge port and the roller screen body.

[0014] Furthermore, the three terminals L1, L2 and L3 of the frequency converter are connected to the power grid via an air circuit breaker QF, and the control end of the air circuit breaker QF is connected to the PLC controller.

[0015] The beneficial effects of the present invention are as follows: the variable frequency start of the rolling screen can be controlled by a PLC controller and a frequency converter, and the forward and reverse rotation of the rolling screen can be controlled. The rolling screen can also be started smoothly under load, so that the screening rate can be improved, and the cleaning, debugging and use are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a circuit diagram of an adjustable speed rolling screen for a food waste treatment device according to an embodiment of the present invention;

[0018] Figure 2 is a front view of a rolling screen according to an embodiment of the present invention;

[0019] Figure 3 is a top view of a rolling screen according to an embodiment of the present invention;

[0020] Figure 4 is a side view of a rolling screen according to an embodiment of the present invention.

[0021] In the figure:

[0022] 1. Roller screen body. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0024] like Figure 1-4 As shown, an adjustable speed rolling screen for a kitchen waste treatment device according to an embodiment of the present invention comprises a rolling screen body 1 corresponding to a material outlet of a crusher, wherein a driving motor in the rolling screen body 1 is a three-phase AC variable frequency motor M, wherein the three-phase AC variable frequency motor M is connected to the U, V and W terminals of the frequency converter, the L1, L2 and L3 terminals of the frequency converter are connected to a power grid, the MI1 terminal of the frequency converter is connected to the DCM terminal of the frequency converter through a relay KA1, the MI2 terminal of the frequency converter is connected to the DCM terminal of the frequency converter through a relay KA2, the MI3 terminal of the frequency converter is connected to the DCM terminal of the frequency converter through a relay KA3, the MI4 terminal of the frequency converter is connected to the DCM terminal of the frequency converter through a relay KA4, and the ACI, ACM, RA and RC terminals of the frequency converter, the control end of the relay KA1, the control end of the relay KA2, the control end of the relay KA3 and the control end of the relay KA4 are all connected to a PLC controller.

[0025] In a specific embodiment of the present invention, the PLC controller is connected to an Internet of Things module.

[0026] In a specific embodiment of the present invention, the Internet of Things module includes a 4G wireless network card module, an RJ45 network port module, and an RS485 serial port module.

[0027] In a specific embodiment of the present invention, the PLC controller is connected to a touch screen.

[0028] In a specific embodiment of the present invention, a belt is provided between the crusher discharge port and the roller screen body 1 .

[0029] In a specific embodiment of the present invention, the three terminals L1, L2, and L3 of the frequency converter are connected to the power grid via an air circuit breaker QF, and the control end of the air circuit breaker QF is connected to the PLC controller.

[0030] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0031] The food waste treatment equipment includes a crusher, a conveyor belt and a roller screen. After the food waste is squeezed and crushed by the crusher, it is transported to the roller screen for screening through the discharge port and the conveyor belt.

[0032] The roller screen comprises a roller screen body 1, and the roller screen body 1 comprises a frame, a screen drum and a driving motor.

[0033] The screen drum is installed on the frame at an angle, and the motor is connected to the screen drum through a coupling to drive the screen drum to rotate around its axis relative to the frame. When the material enters the screen drum from the feed port, the material on the screen surface flips and rolls due to the tilt and rotation of the screen drum, so that the material with a volume smaller than the screen hole is screened out through the screen hole, and the material with a volume larger than the screen hole is discharged through the discharge port at the tail of the screen drum.

[0034] The driving motor 2 is a three-phase AC variable frequency motor M. The three phases of the three-phase AC variable frequency motor M are connected to the U, V, and W terminals of the inverter. The model of the inverter is Delta MS300. The L1, L2, and L3 terminals of the inverter are connected in series with the air circuit breaker QF and then connected to the power grid. The power grid includes three live wires and one neutral wire. The three live wires are connected to the air circuit breaker QF. The inverter has nine terminals, namely MI1, MI2, MI3, MI4, DCM, ACI, ACM, RA, and RC. The MI1 terminal is connected to the DCM terminal through relay KA1, the MI2 terminal is connected to the DCM terminal through relay KA2, the MI3 terminal is connected to the DCM terminal through relay KA3, and the MI4 terminal is connected to the DCM terminal through relay KA4. The ACI terminal, ACM terminal, RA terminal, RC terminal, air circuit breaker QF, and control ends of relays KA1, KA2, KA3, and KA4 are all connected to the PLC controller. Specifically, the ACI terminal is connected to the AQ terminal of the PLC controller, the ACM terminal is connected to the M terminal of the PLC controller, the RA terminal is connected to the I0.0 terminal of the PLC controller, and the RC terminal is connected to the 24V terminal of the PLC controller.

[0035] Relay KA1 is used to control the forward rotation of drive motor 2. Relay KA2 is used to control the reverse rotation of drive motor 2. Relay KA3 and relay KA4 are used to realize the speed setting of drive motor 2. ACI terminal is used to realize the positive output of analog quantity. ACM terminal is used to realize the negative output of analog quantity. RA terminal and RC terminal are a set of switches. RA terminal is connected to the input terminal of PLC controller, and RC terminal is connected to the common terminal of PLC controller. When the inverter fails, RA terminal will close to alarm.

[0036] The model of the PLC controller is SIEMENS S7-1200. The PLC controller is connected to the touch screen and the Internet of Things module respectively. The model of the touch screen is TPC1061Ti. The touch screen is connected to the PLC controller through the RJ45 port. The touch screen is used to realize local control. The model of the Internet of Things module is USR-G781. The Internet of Things module is connected to the PLC controller through the RS485 interface. The Internet of Things module is used to connect to the cloud server for remote control.

[0037] When in use, the touch screen sends instructions to the PLC controller through the RJ45 port. After calculation, the PLC outputs analog signals from the AQ terminal to the ACI terminal and ACM terminal of the inverter to adjust the output frequency of the inverter to the set value of the PLC, thereby controlling the speed of the drive motor 2. When it is necessary to control the start, forward, stop or reverse of the drive motor 2, the PLC controller controls the on and off of relays KA1, KA2, KA3, and KA4 through the DQ terminal, and then controls the inverter. The inverter then controls the drive motor 2 through the three terminals U, V, and W to complete the corresponding action. The staff can also control the PLC controller through the Internet of Things module, which can also control the above process.

[0038] The PLC controller can adjust the speed of the drive motor 2 by controlling the frequency converter, thereby controlling the speed of the rolling screen rotation.

[0039] To sum up, with the help of the above technical scheme of the present invention, the frequency conversion start of the rolling screen can be controlled by the PLC controller and the frequency converter, and the forward and reverse rotation of the rolling screen can be controlled. The rolling screen can also be started smoothly under load, so that the screening rate can be improved, and it is easy to clean, debug and use.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A speed-adjustable rolling screen for a food waste treatment device, comprising a rolling screen body (1) corresponding to a discharge port of a crusher, characterized in that: The driving motor in the rolling screen body (1) is a three-phase AC variable frequency motor M, the three-phase AC variable frequency motor M is connected to the U, V, and W terminals of the frequency converter, the L1, L2, and L3 terminals of the frequency converter are connected to the power grid, the MI1 terminal of the frequency converter is connected to the DCM terminal of the frequency converter via the relay KA1, the MI2 terminal of the frequency converter is connected to the DCM terminal of the frequency converter via the relay KA2, the MI3 terminal of the frequency converter is connected to the DCM terminal of the frequency converter via the relay KA3, the MI4 terminal of the frequency converter is connected to the DCM terminal of the frequency converter via the relay KA4, the ACI, ACM, RA, and RC terminals of the frequency converter, the control end of the relay KA1, the control end of the relay KA2, the control end of the relay KA3, and the control end of the relay KA4 are all connected to the PLC controller, the ACI terminal is connected to the AQ terminal of the PLC controller, the ACM terminal is connected to the M terminal of the PLC controller, the RA terminal is connected to the I0.0 terminal of the PLC controller, and the RC terminal is connected to the 24V terminal of the PLC controller; The three terminals L1, L2 and L3 of the frequency converter are connected to the power grid through an air circuit breaker QF, and the control end of the air circuit breaker QF is connected to the PLC controller; The PLC controller is connected with the IoT module.

2. The adjustable speed rolling screen for kitchen waste treatment equipment according to claim 1, characterized in that: The Internet of Things module includes a 4G wireless network card module, an RJ45 network port module, and an RS485 serial port module.

3. The adjustable speed rolling screen for kitchen waste treatment equipment according to claim 1, characterized in that: The PLC controller is connected with a touch screen.

4. The adjustable speed rolling screen for kitchen waste treatment equipment according to claim 1, characterized in that: A belt is provided between the crusher discharge port and the roller screen body (1).

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