Electro-hydraulic direct drive module and briquetting machine using same

Abstract

The utility model relates to an electro-hydraulic direct drive module and a briquetting machine using the same, and belongs to the technical field of briquetting machines. The electro-hydraulic direct drive module comprises a two-way quantitative hydraulic pump (11) driven by a servo motor (10), and the forward direction and the reverse direction of the two-way quantitative hydraulic pump (11) are communicated to a rodless cavity and a rod cavity of a hydraulic cylinder (18) through an electromagnetic stop valve; the hydraulic system further comprises an energy accumulator (16), and the energy accumulator (16) is connected to the positive direction and the negative direction of the quantitative hydraulic pump (11) through a one-way valve (12). An electro-hydraulic direct-drive briquetting machine comprises a briquetting machine body (1) with a pressing roller and electro-hydraulic direct-drive modules connected to the two ends of the pressing roller. According to the electro-hydraulic direct-drive hot briquetting machine, the motor can rotate forwards and backwards to directly drive the oil pump to rotate, the oil pressure is adjusted by controlling the rotating speed and torque of the motor, and therefore accurate control and adjustment of parameters such as flow, pressure and speed output by a system are achieved, the efficiency of equipment is improved, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of briquetting machines, and relates to an electro-hydraulic direct-drive module and a briquetting machine using the module. Background Art

[0002] Hot briquetting machine is a device for hot pressing solid waste metal. Traditional hot briquetting machines usually use oil pressure as the power source, with complex components such as hydraulic stations and valves, which are difficult to install and debug; and require a lot of energy to maintain pressure during operation, and there are multiple hydraulic components, so the energy utilization rate is low. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide an electro-hydraulic direct drive module and a briquetting machine using the module, so as to simplify the structure of the hot briquetting machine and improve its operating efficiency.

[0004] In order to achieve the above object, the utility model provides the following technical solutions:

[0005] An electro-hydraulic direct drive module comprises a bidirectional quantitative hydraulic pump driven by a servo motor, wherein the forward and reverse directions of the bidirectional quantitative hydraulic pump are connected to a rodless chamber and a rod chamber of a hydraulic cylinder through an electromagnetic cut-off valve;

[0006] It also includes an accumulator, which is connected to the forward and reverse directions of the quantitative hydraulic pump through a one-way valve. The servo motor directly drives the hydraulic pump to rotate through forward and reverse rotation to generate thrust or pulling force to drive the workload. The electro-hydraulic direct-drive hot briquetting machine does not require an oil tank, and the oil replenishment of the hydraulic system is achieved through the accumulator.

[0007] Optionally, the accumulator and the quantitative hydraulic pump are connected to safety valves in both the forward and reverse directions. The one-way valve enables the accumulator to replenish oil to the hydraulic system when the motor rotates forward and reversely; the electromagnetic cut-off valve realizes closed-loop motion control of the hydraulic cylinder and cuts off the oil circuit to control the roller gap size to remain unchanged when power is lost; the safety valve is used to protect the system and automatically releases hydraulic oil to the accumulator when the system is over-pressured.

[0008] Optionally, a displacement sensor is provided on the piston rod of the hydraulic pump to monitor the size of the roll gap.

[0009] Optionally, pressure sensors are provided on the accumulator, the rod chamber and the rodless chamber of the hydraulic cylinder to monitor and control the system pressure and workload position.

[0010] Optionally, the electromagnetic shut-off valve is a two-position two-way electromagnetic shut-off valve.

[0011] An electro-hydraulic direct-drive briquetting machine comprises a briquetting machine with a pressing roller and an electro-hydraulic direct-drive module connected to both ends of the pressing roller. The piston rod of the hydraulic cylinder is connected to the pressing roller of the briquetting machine to control the size of the roller gap.

[0012] Optionally, a PLC controller is included, and the PLC controller is connected to the two electro-hydraulic direct drive modules through two independently arranged drivers.

[0013] Optionally, a touch screen controller for controlling the PLC controller is also included, and the PLC controller is electrically connected to the touch screen controller. The controller includes a PLC controller, a driver controller, and a touch screen controller to realize automatic control and monitoring of the system; the PLC controller can perform operations such as data acquisition, processing, analysis and control, and is used to realize automatic control and monitoring of the system in the electro-hydraulic direct drive system; the driver controller is used to control the speed and torque of the motor to achieve precise control and adjustment of the motor; the touch screen controller is a human-computer interaction interface that can display the system operation status, alarm information, etc., and can also perform system parameter settings and adjustments through the touch screen.

[0014] The beneficial effects of the utility model are:

[0015] The electro-hydraulic direct-drive hot briquetting machine disclosed in the present application does not require a hydraulic station, a relief valve, or a reversing valve. It can directly drive the oil pump to rotate by reversely rotating the motor, and adjust the oil pressure by controlling the motor speed and torque, thereby achieving precise control and adjustment of parameters such as flow, pressure, and speed output by the system, effectively eliminating energy losses in the hydraulic pump station, improving the efficiency of the equipment, and reducing energy consumption.

[0016] This application only uses an electric motor to directly drive a bidirectional hydraulic pump to work, replacing equipment such as hydraulic pump stations, relief valves and electromagnetic reversing valves, eliminating the energy loss of hydraulic pump stations and valves, and replenishing oil to the hydraulic system through an accumulator; and adopts a PLC controller and pressure and displacement sensors to accurately control and adjust parameters such as pressure and displacement output by the system to ensure system stability; the electro-hydraulic direct drive system has a simpler structure and is more convenient and quick to maintain; therefore, this solution has the advantages of high efficiency and energy saving, precise control, low noise and simple maintenance, and meets the use requirements of the hot briquetting machine.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0019] Figure 1 This is a schematic diagram of this scheme.

[0020] Figure numerals: 1 briquetting machine with pressing roller, 2 touch screen controller, 3 PLC controller, 4 driver, 10 servo motor, 11 hydraulic pump, 12 one-way valve, 13 safety valve, 14 two-position two-way electromagnetic shut-off valve, 15 pressure sensor, 16 accumulator, 17 displacement sensor, 18 hydraulic cylinder. DETAILED DESCRIPTION

[0021] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0022] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0023] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] See also Figure 1, the present application relates to an electro-hydraulic direct drive module and a hot briquetting machine using the module. Since the briquetting machine 1 with a roller needs to synchronously control the two ends of the roller shaft, the present embodiment has two sets of identical electro-hydraulic direct drive systems; the servo motor 10 directly drives the hydraulic pump 11 to work in the forward and reverse directions to generate thrust or pulling force to drive the workload; the piston rod of the hydraulic cylinder 18 is connected to the roller 1 of the briquetting machine to control the size of the roller gap; the electro-hydraulic direct drive hot briquetting machine does not require an oil tank, and the oil replenishment of the hydraulic system is achieved through the accumulator 16; the hydraulic valve includes a one-way valve 12, a safety valve 13, and an electromagnetic cut-off valve 14; the different pressures in the two chambers of the hydraulic cylinder 18 cause one of the one-way valves 12 to be opened when the hydraulic pump is working, and the accumulator 16 is connected to the hydraulic system oil circuit to achieve the oil replenishment function; the safety valve 13 is used to protect the system, and the hydraulic oil of the hydraulic system is automatically released to the accumulator when the two chambers of the hydraulic cylinder are over-pressured; the electromagnetic cut-off valve 14 realizes the closed-loop motion control of the hydraulic cylinder 18 and cuts off the oil circuit to control the roller gap size unchanged when the power is off; the sensor includes a pressure The force sensor 15 and the displacement sensor 17 realize the monitoring and control of the system pressure and the workload position; the pressure sensor 15 is arranged in the oil circuit of the accumulator 16, the rod cavity and the rodless cavity of the hydraulic cylinder 18 to monitor the pressure of each oil circuit of the hydraulic system; the displacement sensor 17 is arranged on the piston rod of the hydraulic cylinder 18 to monitor the displacement of the piston rod, and then monitor the size of the roller gap; the controller includes a touch screen controller 2, a PLC controller 3, and a driver controller 4 to realize automatic control and monitoring of the system; the touch screen controller 2 is a human-computer interaction interface that can display the system operation status, alarm information, etc., and can also perform operations such as system parameter setting and adjustment through the touch screen; the PLC controller 3 can perform operations such as data collection, processing, analysis and control during the operation of the hot briquetting machine to realize automatic control and monitoring of the system; the driver controller 4 is used to control the speed and torque of the servo motor 10, to achieve precise control and adjustment of the servo motor 10, and to ensure the control requirements of the roller gap of the briquetting machine.

[0025] The utility model mainly realizes hot pressing of solid waste metal through electro-hydraulic direct drive and PLC control, and invents an electro-hydraulic direct drive hot pressing briquetting machine, which does not require a hydraulic station, a relief valve and a reversing valve, eliminates the energy loss of the hydraulic pump 11 station and the valve, and replenishes oil to the hydraulic system through the accumulator 16; and adopts a PLC controller 3 and a pressure and displacement sensor 17, which can accurately control and adjust the parameters such as pressure and displacement output by the system to ensure the stability of the system; the structure of this solution is simpler, and the maintenance is more convenient and quick, and it has the advantages of high efficiency and energy saving, precise control, low noise, and simple maintenance.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. An electro-hydraulic direct drive module, characterized in that: It comprises a bidirectional quantitative hydraulic pump (11) driven by a servo motor (10), wherein the forward direction and the reverse direction of the bidirectional quantitative hydraulic pump (11) are connected to the rodless chamber and the rod chamber of the hydraulic cylinder (18) through an electromagnetic cut-off valve; It also includes an accumulator (16), which is connected to the forward and reverse directions of the quantitative hydraulic pump (11) through a one-way valve (12).

2. The electro-hydraulic direct drive module according to claim 1, characterized in that: The accumulator (16) and the quantitative hydraulic pump (11) are both connected to safety valves (13) in the forward and reverse directions.

3. The electro-hydraulic direct drive module according to claim 1, characterized in that: A displacement sensor (17) is arranged on the piston rod of the hydraulic pump (11).

4. The electro-hydraulic direct drive module according to claim 1, characterized in that: Pressure sensors (15) are provided on the accumulator (16) and the rod chamber and the rodless chamber of the hydraulic cylinder (18).

5. The electro-hydraulic direct drive module according to claim 1, characterized in that: The electromagnetic shut-off valve is a two-position two-way electromagnetic shut-off valve (14).

6. An electro-hydraulic direct-drive briquetting machine, characterized in that: The invention comprises a briquetting machine (1) with a pressing roller and an electro-hydraulic direct drive module according to any one of claims 1 to 5 connected to both ends of the pressing roller.

7. The electro-hydraulic direct-drive briquetting machine according to claim 6, characterized in that: It comprises a PLC controller (3), wherein the PLC controller (3) is connected to the two electro-hydraulic direct drive modules via two independently arranged drivers (4).

8. The electro-hydraulic direct-drive briquetting machine according to claim 7, characterized in that: It also comprises a touch screen controller (2) for controlling the PLC controller (3), and the PLC controller (3) is electrically connected to the touch screen controller (2).

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