Roller rotating speed self-synchronizing device and single-drive double-roller crusher

Abstract

A roller rotating speed self-synchronizing device is installed on a single-drive double-roller crusher, the single-drive double-roller crusher comprises a driving device, a driving roller in transmission connection with the driving device and a driven roller matched with the driving roller, and the roller rotating speed self-synchronizing device comprises a pressurizing unit, a power unit, an energy storage unit and a liquid storage unit. The pressurizing unit and the power unit are respectively in transmission connection with the driving roller and the driven roller; the pressurizing unit works through rotation of the driving roller and converts liquid in the liquid storage unit into high-pressure liquid and pumps the high-pressure liquid into the energy storage unit, and when the rotating speed of the driven roller is smaller than a preset value, the energy storage unit releases the high-pressure liquid and transmits the high-pressure liquid to the power unit; the power unit drives the driven roller to rotate so as to increase the rotating speed of the driven roller to be the same as that of the driving roller. The utility model further provides the single-drive double-roller type crusher.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery technology, and in particular to a roller speed self-synchronization device and a single-drive double-roll crusher. Background Technology

[0002] In recent years, due to the downturn in the real estate market, which is downstream of the sand and gravel aggregate market, the sand and gravel aggregate market has shrunk. Domestic crusher manufacturers have sought market transformation, launching new products targeting the construction waste, metal mines, and overseas sand and gravel markets. Among these, the roller crusher has become a key product for crusher manufacturers transitioning to the metal mine market. Roller crushers are characterized by their small size, large crushing ratio, low noise, simple structure, convenient maintenance, uniform particle size of crushed materials, low over-crushing rate, and high safety and reliability.

[0003] In existing technologies, single-drive double-roll crushers mainly rely on a single motor to drive the drive roller. The driven roller moves in the opposite direction to the drive roller by the friction between the material squeezed by the drive roller and the driven roller. In actual use, due to factors such as insufficient feed and insufficient friction between the material and the roller surface, the driven roller often fails to rotate or is out of sync with the drive roller. This will cause a significant decrease in the equipment's processing capacity, resulting in low crusher efficiency and energy waste.

[0004] To improve the working efficiency and reduce the energy consumption of double roll crushers, the following solutions are generally available to address the problem of asynchronous rotation speeds between the drive roll and driven roll of a double roll crusher:

[0005] (1) Single motor drive, with a small diameter drive roller and a large diameter driven roller. During operation, the drive roller transmits power to the driven roller through the friction of the crushed material. In this scheme, the speed of the driven roller is unstable and the working efficiency is low.

[0006] (2) Single motor drive: A transmission device is set between the motor and the drive roller and the driven roller to realize synchronous rotation of the drive roller and the driven roller; this scheme has a relatively high energy consumption of the motor, which will increase the production cost.

[0007] (3) Dual motor drive. Although dual motor drive can greatly increase output, dual motors significantly increase equipment cost, equipment footprint, equipment weight and equipment energy consumption, which poses a great challenge to users' investment, site and energy consumption. Utility Model Content

[0008] The purpose of this invention is to provide a roller speed self-synchronization device and a single-drive double-roll crusher, which aims to solve or at least partially solve the shortcomings of the above-mentioned background technology. It can ensure that the speed of the driving roller and the driven roller of the single-drive double-roll crusher are synchronized, improve working efficiency, and reduce energy consumption.

[0009] A roller speed self-synchronization device is installed on a single-drive double-roll crusher. The single-drive double-roll crusher includes a drive unit, a drive roller connected to the drive unit, and a driven roller that cooperates with the drive roller. The roller speed self-synchronization device includes a pressurization unit, a power unit, an energy storage unit, and a liquid storage unit. The pressurization unit and the power unit are connected to the drive roller and the driven roller, respectively. The pressurization unit works by rotating the drive roller and converts the liquid in the liquid storage unit into high-pressure liquid and pumps it into the energy storage unit. When the speed of the driven roller is less than a preset value, the energy storage unit releases the high-pressure liquid and transmits it to the power unit. The power unit drives the driven roller to rotate to increase the speed of the driven roller to the same speed as the drive roller.

[0010] Furthermore, the pressurization unit includes a hydraulic pump that is connected to the drive roller drive, and the inlet and outlet of the hydraulic pump are respectively connected to the liquid storage unit and the energy storage unit.

[0011] Furthermore, a first check valve is provided between the outlet of the hydraulic pump and the energy storage unit. The first check valve is used to prevent the high-pressure liquid in the energy storage unit from flowing back to the hydraulic pump.

[0012] Furthermore, the power unit includes a hydraulic motor, an electromagnetic coupling, and a sensor. The hydraulic motor is connected to the driven roller via the electromagnetic coupling. The sensor is used to detect the rotational speed of the driven roller. The inlet and outlet of the hydraulic motor are connected to the energy storage unit and the liquid storage unit, respectively.

[0013] Furthermore, a solenoid valve is installed between the hydraulic motor inlet and the energy storage unit. The solenoid valve is used to control the opening or closing of the pipeline between the hydraulic motor and the energy storage unit.

[0014] Furthermore, a second check valve is provided between the solenoid valve and the energy storage unit. The second check valve is used to prevent the hydraulic fluid from flowing back into the energy storage unit.

[0015] Furthermore, the power unit also includes a controller, which is used to receive the output signals of the sensors and control the electromagnetic coupling and solenoid valves.

[0016] Furthermore, the energy storage unit and the liquid storage unit are connected by a first pipeline, and an overflow valve is installed on the first pipeline to prevent the pressure in the energy storage unit from becoming too high.

[0017] A single-drive double-roll crusher includes a frame, a first bearing housing, a second bearing housing, and the aforementioned roller speed self-synchronization device. The first bearing housing and the second bearing housing are respectively mounted on the frame and are used to install the drive roller and the driven roller, respectively. A first pipeline section surrounds the first bearing housing and the second bearing housing.

[0018] Furthermore, the single-drive double-roll crusher also includes a cooling device that can be used to cool the liquid in the storage unit.

[0019] The roller speed self-synchronization device provided by this utility model is applied to a single-drive double-roll crusher. Through the cooperation of a pressurization unit, a power unit, an energy storage unit, and a liquid storage unit, the excess energy generated when the drive roller rotates is stored in the energy storage unit. Without the need for additional equipment and energy supply, the speed synchronization of the drive roller and the driven roller is ensured during operation, thereby improving the working efficiency of the single-drive double-roll crusher and reducing energy consumption.

[0020] In addition, the circulation of liquid medium can reduce the working temperature of the first and second bearing housings and improve their service life; the modularity of each unit of the roller speed self-synchronization device is good, and it can be installed and improved based on most single-drive double-roll crushers on the market. The improved single-drive double-roll crusher is not only lightweight, has a small footprint, and high stability, but also reaches the same speed as the dual-motor double-roll crusher when it reaches maximum output.

[0021] The single-drive double-roll crusher provided by this utility model has all the beneficial effects of the roller speed self-synchronization device. In addition, through the cooperation of the cooling device and the first pipeline, the cooling effect on the first bearing seat and the second bearing can be further improved, thereby extending their service life. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a roller speed self-synchronization device according to the present invention.

[0023] Figure 2 for Figure 1 The diagram shows the structure of the booster unit.

[0024] Figure 3 for Figure 1 The diagram shows the structure of the power unit.

[0025] Figure 4 for Figure 3 The control logic diagram of the controller is shown.

[0026] Figure 5 This is a schematic diagram of the structure of a single-drive double-roll crusher according to the present invention. Detailed Implementation

[0027] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] The directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" (if present) used in the specification and claims of this utility model are defined according to the position of the structures in the drawings and the relative positions of the structures, and are only for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this application.

[0030] Please see Figure 1 A roller speed self-synchronization device 10 is installed on a single-drive double-roll crusher. The single-drive double-roll crusher includes a drive device, a drive roller 20 that is connected to the drive device, and a driven roller 30 that cooperates with the drive roller 20.

[0031] The roller speed self-synchronization device 10 includes a booster unit 11, a power unit 12, an energy storage unit 13, and a liquid storage unit 14. The booster unit 11 and the power unit 12 are respectively connected to the drive roller 20 and the driven roller 30.

[0032] The pressurization unit 11 operates by rotating the drive roller 20 and converts the liquid in the storage unit 14 into high-pressure liquid and pumps it into the energy storage unit 13. When the rotational speed of the driven roller 30 is less than a preset value, the energy storage unit 13 releases the high-pressure liquid and transmits it to the power unit 12. The power unit 12 drives the driven roller 30 to rotate to increase the rotational speed of the driven roller 30 to be the same as the rotational speed of the drive roller 20.

[0033] In this embodiment, the liquid used in this invention is hydraulic oil. The roller speed self-synchronization device 10 utilizes the energy of the drive roller 20 by using hydraulic oil as a medium.

[0034] The roller speed self-synchronization device 10 provided by this utility model is applied to the single-drive double-roll crusher. Through the cooperation of the pressurization unit 11, the power unit 12, the energy storage unit 13, and the liquid storage unit 14, the excess energy generated when the drive roller 20 rotates is stored in the energy storage unit 13. Without the need for additional equipment and energy supply, the speed synchronization of the drive roller 20 and the driven roller 30 during operation is ensured, thereby improving the working efficiency of the single-drive double-roll crusher and reducing energy consumption. In addition, the modularity of each unit of the roller speed self-synchronization device 10 is good, and it can be installed and improved based on most single-drive double-roll crushers on the market. The improved single-drive double-roll crusher is not only lightweight, has a small footprint, and high stability, but also reaches maximum output at a speed comparable to that of a dual-motor double-roll crusher.

[0035] Please see Figure 1 and Figure 2 The booster unit 11 includes a hydraulic pump 111 that is connected to the drive roller 20. The inlet 114 and outlet 115 of the hydraulic pump 111 are respectively connected to the liquid storage unit 14 and the energy storage unit 13.

[0036] Furthermore, the hydraulic pump 111 is connected to the drive roller 20 via a transmission structure 112, which is a coupling, gear, or pulley. In this embodiment, the transmission structure 112 is a coupling. The transmission structure 112 and the hydraulic pump 111 are connected via a speed regulating structure, which is a speed reducer or reduction gear. In this embodiment, the speed regulating structure is a speed reducer.

[0037] Furthermore, the outlet 114 of the hydraulic pump 111 is connected to the energy storage unit 13 via a second pipeline 16. A first check valve 161 is provided on the second pipeline 16. The first check valve 161 is used to prevent the high-pressure liquid of the energy storage unit 13 from flowing back to the hydraulic pump 111.

[0038] Please see Figure 1 and Figure 3 The power unit 12 includes a hydraulic motor 121, an electromagnetic coupling 122, and a sensor 123. The hydraulic motor 121 is connected to the driven roller 30 via the electromagnetic coupling 122. The sensor 123 is used to detect the rotational speed of the driven roller 30. The inlet 127 and outlet 128 of the hydraulic motor 121 are respectively connected to the energy storage unit 13 and the liquid storage unit 14.

[0039] Furthermore, the inlet 127 of the hydraulic motor 121 is connected to the energy storage unit 13 via a third pipeline 17. A solenoid valve 124 is installed on the third pipeline 17, which controls the opening and closing of the third pipeline 17 between the hydraulic motor 121 and the energy storage unit 13. A second check valve 171 is installed on the third pipeline 17, between the solenoid valve 124 and the energy storage unit 13, to prevent the fluid from the hydraulic motor 121 from flowing back into the energy storage unit 13.

[0040] More specifically, the power unit 12 also includes a controller 125, which is electrically connected to the sensor 123, the electromagnetic coupling 122, and the solenoid valve 124 via control lines 129. The controller 125 is used to receive the output signal of the sensor 123 and to control the electromagnetic coupling 122 and the solenoid valve 124.

[0041] Please see Figure 1 The energy storage unit 13 and the liquid storage unit 14 are connected by a first pipeline 15. An overflow valve 151 is provided on the first pipeline 15 to prevent excessive pressure in the energy storage unit 13. In this embodiment, preferably, the second pipeline 16 and the third pipeline 17 are respectively connected to the first pipeline 15.

[0042] Please see Figure 1-Figure 4 In this embodiment, the working process of the roller speed self-synchronization device 10 is described in detail below:

[0043] During normal operation, when the sensor 123 detects that the rotational speed of the driven roller 30 is higher than a preset value, the driving device drives the driving roller 20 to rotate. The driving roller 20 transmits power to the driven roller 30 through the crushed material. At the same time, the driving roller 20 drives the hydraulic pump 111 through the transmission structure 112 and the speed regulation structure. The hydraulic pump 111 converts the liquid in the storage unit 14 into high-pressure liquid. Since the solenoid valve 124 is in the closed state, the high-pressure liquid flows from the hydraulic pump 111 through the second pipeline 16 into the first pipeline 15, and finally into the energy storage unit 13, where it stores energy. If the pressure in the energy storage unit 13 reaches its limit, the overflow valve 151 opens to reduce the pressure in the energy storage unit 13 to a safe range. Subsequently, the hydraulic pump 111 continuously converts the liquid in the storage unit 14 into high-pressure liquid, and the liquid medium circulates between the pressurization unit 11, the energy storage unit 13, and the storage unit 14.

[0044] When the sensor 123 detects that the rotational speed of the driven roller 30 is lower than a preset value, the sensor 123 transmits an output signal to the controller 125, triggering the controller 125's control program. The controller 125 controls the solenoid valve 124 to be de-energized so that the solenoid valve 124 is opened. At the same time, the controller 125 controls the electromagnetic coupling 122 to be energized. The high-pressure liquid in the energy storage unit 13 flows to the third pipeline 17 after being blocked by the first one-way valve 161, and finally drives the hydraulic motor 121 through the solenoid valve 124. The hydraulic motor 121 transmits torque to the driven roller 30 through the electromagnetic coupling 122, and the rotational speed of the driven roller 30 is increased to be the same as the rotational speed of the drive roller 20, so that the drive roller 20 and the driven roller 30 rotate synchronously.

[0045] The advantages of the roller speed self-synchronization device 10 provided in this embodiment include:

[0046] (1) It can improve the working efficiency of the single-drive double-roll crusher and reduce energy consumption.

[0047] (2) The excess energy generated when the drive roller 20 rotates can be stored in the energy storage unit 13 without the need for additional equipment energy supply.

[0048] (3) It has good modularity and can be installed and improved based on most of the single-drive double roll crushers on the market. The improved single-drive double roll crusher is not only lightweight, has a small footprint, and is highly stable, but also reaches the maximum output speed comparable to that of the dual-motor double roll crusher.

[0049] Additionally, please see Figure 5 This utility model also provides a single-drive double-roll crusher, including a frame 60, a first bearing seat 40, a second bearing seat 50, and a roller speed self-synchronization device 10 as described in any of the above embodiments. The first bearing seat 40 and the second bearing seat 50 are respectively disposed on the frame 60 and are respectively used to install the drive roller 20 and the driven roller 30. The hydraulic pump 111 is mounted on the first bearing seat 40 through a first bracket 113, and the hydraulic motor 121 is mounted on the second bearing seat 50 through a second bracket 126. The first pipeline 15 partially surrounds the first bearing seat 40 and the second bearing seat 50.

[0050] When the roller speed self-synchronization device 10 is working, the liquid medium circulates between the pressurization unit 11, the power unit 12, the energy storage unit 13, and the liquid storage unit 14. The liquid flowing through the first pipeline 15 cools the first bearing seat 40 and the second bearing seat 50, reducing their operating temperature and improving their service life.

[0051] Furthermore, the single-drive double-roll crusher also includes a cooling device 70, which can be used to cool the liquid in the liquid storage unit 14. In this embodiment, the cooling device 70 is disposed on the liquid storage unit 14.

[0052] More specifically, the cooling device 70 can employ air cooling, water cooling, or other cooling methods. By adding the cooling device 70, the cooling effect of the first bearing housing 40 and the second bearing housing 50 can be further improved, preventing the operating temperature of the first bearing housing 40 and the second bearing housing 50 from becoming too high, thereby increasing the service life of the first bearing housing 40 and the second bearing housing 50.

[0053] Part of the structure of the electromagnetic coupling 122 can be integrated with the driven roller 30, making the structure more compact. The controller 125 can be integrated into a large-scale industrial control system such as a field DCS, and the controller 125 can monitor the relevant operating conditions of the single-drive double-roll crusher in real time.

[0054] The single-drive double-roll crusher provided in this embodiment obviously has all the advantages of the roller speed self-synchronization device 10, which will not be repeated here. In addition, through the circulation of the liquid medium in the roller speed self-synchronization device 10, the working temperature of the first bearing seat 40 and the second bearing seat 50 can be reduced to improve their service life. With the cooperation of the cooling device 70 and the first pipeline 15, the cooling effect on the first bearing seat 40 and the second bearing seat 50 can be further improved.

[0055] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A roller speed self-synchronization device, installed on a single-drive double-roll crusher, the single-drive double-roll crusher comprising a drive device, a drive roller (20) connected to the drive device, and a driven roller (30) cooperating with the drive roller (20), characterized in that, The roller speed self-synchronization device (10) includes a booster unit (11), a power unit (12), an energy storage unit (13), and a liquid storage unit (14). The booster unit (11) and the power unit (12) are respectively connected to the drive roller (20) and the driven roller (30). The booster unit (11) operates by rotating the drive roller (20) and converts the liquid in the storage unit (14) into high-pressure liquid and pumps it into the energy storage unit (13). When the rotation speed of the driven roller (30) is less than a preset value, the energy storage unit (13) releases the high-pressure liquid and transmits it to the power unit (12). The power unit (12) drives the driven roller (30) to rotate to increase the rotation speed of the driven roller (30) to be the same as the rotation speed of the drive roller (20).

2. The roller speed self-synchronization device as described in claim 1, characterized in that, The booster unit (11) includes a hydraulic pump (111) that is connected to the drive roller (20) for transmission. The inlet (114) and outlet (115) of the hydraulic pump (111) are respectively connected to the liquid storage unit (14) and the energy storage unit (13).

3. The roller speed self-synchronization device as described in claim 2, characterized in that, A first check valve (161) is provided between the outlet (115) of the hydraulic pump (111) and the energy storage unit (13). The first check valve (161) is used to prevent the high-pressure liquid of the energy storage unit (13) from flowing back to the hydraulic pump (111).

4. The roller speed self-synchronization device as described in claim 1, characterized in that, The power unit (12) includes a hydraulic motor (121), an electromagnetic coupling (122), and a sensor (123). The hydraulic motor (121) is connected to the driven roller (30) via the electromagnetic coupling (122). The sensor (123) is used to detect the rotational speed of the driven roller (30). The inlet (127) and outlet (128) of the hydraulic motor (121) are connected to the energy storage unit (13) and the liquid storage unit (14), respectively.

5. The roller speed self-synchronization device as described in claim 4, characterized in that, A solenoid valve (124) is provided between the inlet (127) of the hydraulic motor (121) and the energy storage unit (13). The solenoid valve (124) is used to control the opening or closing of the pipeline between the hydraulic motor (121) and the energy storage unit (13).

6. The roller speed self-synchronization device as described in claim 5, characterized in that, A second check valve (171) is provided between the solenoid valve (124) and the energy storage unit (13). The second check valve (171) is used to prevent the liquid of the hydraulic motor (121) from flowing back to the energy storage unit (13).

7. The roller speed self-synchronization device as described in claim 6, characterized in that, The power unit (12) also includes a controller (125), which is used to receive the output signal of the sensor (123) and control the electromagnetic coupling (122) and the solenoid valve (124).

8. The roller speed self-synchronization device as described in claim 1, characterized in that, The energy storage unit (13) and the liquid storage unit (14) are connected by a first pipeline (15), and an overflow valve (151) is provided on the first pipeline (15). The overflow valve (151) is used to prevent the pressure of the energy storage unit (13) from being too high.

9. A single-drive double-roll crusher, characterized in that, The device includes a frame (60), a first bearing housing (40), a second bearing housing (50), and a roller speed self-synchronization device (10) as described in any one of claims 1-8. The first bearing housing (40) and the second bearing housing (50) are respectively disposed on the frame (60) and are respectively used to install the drive roller (20) and the driven roller (30). The first pipeline (15) partially surrounds the first bearing housing (40) and the second bearing housing (50).

10. The single-drive double-roll crusher as described in claim 9, characterized in that, The single-drive double-roll crusher also includes a cooling device (70) which can be used to cool the liquid in the liquid storage unit (14).

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