Energy recovery and feedback device of rubber hydraulic vulcanizing machine

Abstract

The utility model relates to the field of rubber vulcanizing equipment, in particular to a possible energy recovery feedback device of a rubber hydraulic vulcanizing machine, which comprises a hydraulic oil tank, a hydraulic pump, a motor, a lifting valve group and a main oil cylinder, the hydraulic oil tank is used for storing hydraulic oil, a liquid inlet end of the hydraulic pump is connected with the hydraulic oil tank, the motor is used for driving the hydraulic pump, and the lifting valve group is connected with the main oil cylinder. When the oil rod load of the main oil cylinder rises rapidly, hydraulic oil enters the rodless cavity of the main oil cylinder to jack the oil rod, when the oil rod load of the main oil cylinder rises slowly, the hydraulic oil flows back into the hydraulic oil tank from the rod cavity of the main oil cylinder, and when the oil rod load of the main oil cylinder falls, the hydraulic oil flows back into the liquid outlet end of the hydraulic pump from the rodless cavity of the main oil cylinder. Therefore, the defects that the hydraulic system of the vulcanizing machine is poor in control accuracy and large in energy consumption ratio are effectively overcome.

Description

Technical Field

[0001] The utility model relates to the field of rubber vulcanization equipment, in particular to an energy recovery feedback device for a rubber hydraulic vulcanizer. Background Art

[0002] The existing traditional rubber hydraulic vulcanizer technology has a low overall efficiency of the hydraulic system, resulting in increased production costs and reduced product competitiveness. With the implementation of the national dual-carbon strategy, energy conservation and emission reduction have become an inevitable trend, and the development direction of the hydraulic system of the vulcanizer will inevitably be to improve efficiency and reduce energy consumption.

[0003] The existing rubber vulcanizer hydraulic system includes: a constant pressure pump as the power source, a pressure reducing valve to control the pressure, and a proportional valve to control the flow; a proportional pressure pump as the power source, a proportional valve or a throttle valve to control the flow; a proportional flow pump as the power source, a pressure reducing valve to control the pressure. The above control methods have large throttling losses and low efficiency, so it is necessary to select a larger motor and pump to meet the equipment requirements, which in turn

[0004] This causes high energy consumption in the hydraulic system.

[0005] The main action of the rubber hydraulic vulcanizer is the main cylinder opening and closing action. The main oil cylinder is mainly lifting action. Since the load is generally several tons or even more than ten tons, a balance valve is generally used to control the load to descend smoothly when the main oil cylinder descends. The gravitational potential energy of the load is fully converted into the internal energy of the hydraulic oil. Combined with the general low efficiency of the existing system, the system heats up seriously, the hydraulic oil temperature rises quickly, the system stability is reduced, the control accuracy of the vulcanizer hydraulic system is poor, and the energy consumption ratio is large. In view of this, we propose a potential energy recovery feedback device for rubber hydraulic vulcanizer. Utility Model Content

[0006] The utility model aims to provide a possible energy recovery feedback device for a rubber hydraulic vulcanizer to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A feedback device for energy recovery of a rubber vulcanizer, characterized in that it comprises: a hydraulic oil tank, a hydraulic pump, a motor, a lifting valve group, and a main oil cylinder, the hydraulic oil tank is used to store hydraulic oil, and the hydraulic oil tank is connected to an oil return port through a pipeline, the liquid inlet end of the hydraulic pump is connected to the hydraulic oil tank, and the liquid outlet end is connected to an oil outlet through a pipeline, the motor is used to drive the hydraulic pump to output the hydraulic oil stored in the hydraulic oil tank from the oil outlet, the P port of the lifting valve group is connected to the oil outlet, the A port is connected to the rodless chamber of the main oil cylinder, and the T port of the lifting valve group is connected to the The oil return port, port B is connected to the rod chamber of the master cylinder. When the load of the master cylinder rod rises rapidly, the hydraulic oil enters the rodless chamber of the master cylinder to lift the rod. When the load of the master cylinder rod rises slowly, the hydraulic oil flows back from the rod chamber of the master cylinder into the hydraulic oil tank. When the load of the master cylinder rod decreases, the hydraulic oil flows back from the rodless chamber of the master cylinder into the liquid outlet of the hydraulic pump and drives the motor to reverse and generate electricity. The rod chamber of the master cylinder and the hydraulic oil tank are also connected through a one-way valve A, which is used to balance the pressure between the rod chamber and the hydraulic oil tank when returning the oil.

[0009] Preferably, the lifting valve group includes: an electro-hydraulic reversing valve, an electromagnetic stop valve A, an electromagnetic stop valve B, and an electromagnetic stop valve C. The P port of the electro-hydraulic reversing valve is connected to the oil outlet, the A port is connected to the rodless chamber of the master cylinder through the electromagnetic stop valve A, the T port of the electro-hydraulic reversing valve is connected to the oil return port, the B port is connected to the rod chamber of the master cylinder through the electromagnetic stop valve B, and the P port of the electro-hydraulic reversing valve is also connected to the rod chamber of the master cylinder through the electromagnetic stop valve C.

[0010] Preferably, a pressure measuring joint A and a pressure sensor A are also installed on the pipeline connecting the rodless chamber of the master cylinder and the electromagnetic stop valve A.

[0011] Preferably, a pressure measuring joint B and a pressure sensor B are also installed on the common pipeline connecting the rod chamber of the master cylinder and the electromagnetic stop valve B and the electromagnetic stop valve C.

[0012] Preferably, a one-way valve B is installed on the pipeline connecting the P port of the electro-hydraulic reversing valve and the electromagnetic stop valve C.

[0013] Preferably, it also includes a water cooling device for cooling the hydraulic oil in the hydraulic oil tank, and the water cooling device is powered by reverse power generation by the motor.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: through the feedback device of the rubber vulcanizer with possible energy recovery, when the load of the oil rod of the main oil cylinder decreases, the hydraulic oil flows back from the rodless chamber of the main oil cylinder into the liquid outlet end of the hydraulic pump, and drives the motor to reverse and generate electricity, and the water cooling device is powered by the reverse power generation of the motor. The rubber hydraulic vulcanizer system effectively improves the shortcomings of the vulcanizer hydraulic system, such as poor control accuracy and large energy consumption ratio, and has the advantages of reliable control, high accuracy, lower energy consumption and possible energy recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the principle of the utility model.

[0016] In the figure:

[0017] 1. Hydraulic oil tank; 11. Oil return port; 12. Check valve A;

[0018] Hydraulic pump; 21. Oil outlet;

[0019] Motor;

[0020] Lifting valve group; 41, electro-hydraulic reversing valve; 42, solenoid stop valve A; 43, solenoid stop valve B; 44, solenoid stop valve C; 45, one-way valve B;

[0021] Master oil cylinder; 51, pressure measuring joint A; 52, pressure sensor A; 53, pressure measuring joint B; 54, pressure sensor B;

[0022] 6. Water cooling device. Implementation

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The main action of the traditional rubber hydraulic vulcanizer is the main cylinder opening and closing action. The main oil cylinder mainly performs lifting and lowering actions. Since the load is generally several tons or even more than ten tons, a balance valve is generally used to control the load to descend smoothly when the main oil cylinder descends. The gravitational potential energy of the load is completely converted into the internal energy of the hydraulic oil. Combined with the generally low efficiency of the existing system, the system heats up seriously, the hydraulic oil temperature rises quickly, the system stability is reduced, the vulcanizer hydraulic system control accuracy is poor, and the energy consumption ratio is large.

[0025] This embodiment provides a feedback device for energy recovery of a rubber hydraulic vulcanizer, such as Figure 1As shown, it includes: a hydraulic oil tank 1, a hydraulic pump 2, a motor 3, a lifting valve group 4, and a main oil cylinder 5; the hydraulic oil tank 1 is used to store hydraulic oil, and the hydraulic oil tank 1 is connected to an oil return port 11 through a pipeline; the liquid inlet end of the hydraulic pump 2 is connected to the hydraulic oil tank 1, and the liquid outlet end is connected to an oil outlet 21 through a pipeline; the motor 3 is used to drive the hydraulic pump 2 to output the hydraulic oil stored in the hydraulic oil tank 1 from the oil outlet 21; the P port of the lifting valve group 4 is connected to the oil outlet 21, and the A port is connected to the rodless cavity of the main oil cylinder 5; the T port of the lifting valve group 4 is connected to the oil return port 11, and the B port is connected to the rod cavity of the main oil cylinder 5;

[0026] When the load of the oil rod of the master cylinder 5 rises rapidly, the hydraulic oil enters the rodless chamber of the master cylinder 5 to lift the oil rod; when the load of the oil rod of the master cylinder 5 rises slowly, the hydraulic oil flows back from the rod chamber of the master cylinder 5 into the hydraulic oil tank 1; when the load of the oil rod of the master cylinder 5 decreases, the hydraulic oil flows back from the rodless chamber of the master cylinder 5 into the liquid outlet end of the hydraulic pump 2 and drives the motor 3 to reverse and generate electricity; the rod chamber of the master cylinder 5 and the hydraulic oil tank 1 are also connected through a one-way valve A12, which is used to balance the pressure between the rod chamber and the hydraulic oil tank 1 when returning the oil.

[0027] When the load of the master cylinder 5 rises rapidly, the electromagnetic coils 2DT and 5DT are energized, the rodless chamber and the rod chamber of the master cylinder 5 are connected, and the hydraulic oil flows from the P1 port of the hydraulic pump 2 through the electro-hydraulic reversing valve 41 and the stop valve A42 to reach the rodless chamber of the master cylinder 5. At the same time, the hydraulic oil in the rod chamber of the master cylinder 5 returns to the rodless chamber of the master cylinder 5 through the electromagnetic stop valve B43, forming a differential connection, and the master cylinder 5 extends at high speed.

[0028] When the load of the master cylinder 5 rises slowly, the electromagnetic coils 2DT and 4DT are energized, and the hydraulic oil flows from the P1 port of the hydraulic pump 2 through the electro-hydraulic reversing valve 41 and the stop valve A42 to reach the rodless chamber of the master cylinder 5. At the same time, the hydraulic oil in the rod chamber of the master cylinder 5 returns to the oil tank through the electromagnetic stop valve B43, and the master cylinder 5 extends slowly.

[0029] When the load of the main oil cylinder 5 decreases, the electromagnetic coils 2DT and 3DT are energized to control the output torque of the motor 10, so that the output pressure of the hydraulic pump 2 is slightly lower than the rodless chamber pressure of the main oil cylinder 5. At this time, the main oil cylinder 5 slowly decreases under the action of the load, pushing the hydraulic oil from the rodless chamber of the main oil cylinder 5 through the electro-hydraulic reversing valve 41 to the P1 port of the hydraulic pump 2, pushing the hydraulic pump 2 to reverse. At this time, the hydraulic pump 2 is in the motor working state, overcoming the torque of the motor to drive the motor to reverse and generate electricity. The generated electric energy is fed back to the power grid through the energy feedback module or provided to other systems that are using electricity in the busbar system. At this time, the motor output torque can be controlled to control the retraction and descent speed of the main oil cylinder 5.

[0030] The lifting valve group 4 includes: an electro-hydraulic reversing valve 41, an electromagnetic stop valve A42, an electromagnetic stop valve B43, and an electromagnetic stop valve C44; the P port of the electro-hydraulic reversing valve 41 is connected to the oil outlet 21, and the A port is connected to the rodless chamber of the master cylinder 5 through the electromagnetic stop valve A42; the T port of the electro-hydraulic reversing valve 41 is connected to the oil return port 11, and the B port is connected to the rod chamber of the master cylinder 5 through the electromagnetic stop valve B43; the P port of the electro-hydraulic reversing valve 41 is also connected to the rod chamber of the master cylinder 5 through the electromagnetic stop valve C44. The lifting valve group 4 mainly realizes the lifting function through the pressure transmission of hydraulic oil.

[0031] A pressure measuring joint A51 and a pressure sensor A52 are also installed on the pipeline connecting the rodless chamber of the master oil cylinder 5 and the electromagnetic stop valve A42. There is a self-sealing valve in the pressure measuring joint. When used alone, the self-sealing valve is closed due to the action of the spring; the self-sealing valve can be opened after being connected to a measuring hose or measuring joint with a thimble, which is used for sampling of high-pressure or low-pressure fluid systems and system pressure detection, and the pressure sensor A is mainly used to complete the closed-loop control of the force. When the load of the oil rod of the master oil cylinder 5 decreases, the hydraulic oil flows back from the rodless chamber of the master oil cylinder 5 through the pressure sensor A52, the pressure measuring joint A51, the electromagnetic stop valve A42 and the electro-hydraulic reversing valve 41 to the liquid outlet of the hydraulic pump 2, and drives the motor 3 to reverse and generate electricity.

[0032] A pressure measuring joint B53 and a pressure sensor B54 are also installed on the common pipeline connecting the rod chamber of the master cylinder 5 and the electromagnetic stop valve B43 and the electromagnetic stop valve C44. When the load of the rod of the master cylinder 5 rises slowly, the hydraulic oil flows back into the hydraulic oil tank 1 from the rod chamber of the master cylinder 5 through the pressure sensor B54 and the electromagnetic stop valve B43; when the load of the master cylinder 5 rises rapidly, the hydraulic oil in the rod chamber of the master cylinder 5 returns to the rodless chamber of the master cylinder 5 through the pressure measuring joint B53, the electromagnetic stop valve C44, the check valve B45, and the electro-hydraulic reversing valve 41.

[0033] A one-way valve B45 is installed on the pipeline connecting the P port of the electro-hydraulic reversing valve 41 and the electromagnetic stop valve C44. The one-way valve allows the fluid to flow only along the water inlet, but the medium at the water outlet cannot flow back. Therefore, the one-way valve B45 is connected to the pipeline to prevent the oil from flowing in the reverse direction.

[0034] The water cooling device 6 cools the hydraulic oil in the hydraulic oil tank 1, and the water cooling device 6 is powered by the reverse power generation of the motor 3, so that energy can be recovered and fully utilized. The water cooling device 6 can use a water cooler with a model of AOT-SSW-10-DN50 to cool the hydraulic oil in the hydraulic oil tank 1. In addition, in another embodiment, the reverse power generation of the motor 3 can also power other electrical equipment, thereby achieving the purpose of energy recovery and feedback to the electrical equipment.

[0035] The above shows and describes the basic principle, main features and 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 preferred examples of the utility model and are not used to limit 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 of the utility model is defined by the attached claims and their equivalents.

Claims

1. A potential energy recovery feedback device for a rubber hydraulic vulcanizer, characterized in that: include: Hydraulic oil tank (1), hydraulic pump (2), motor (3), lifting valve group (4), main oil cylinder (5); The hydraulic oil tank (1) is used to store hydraulic oil, and the hydraulic oil tank (1) is connected to an oil return port (11) via a pipeline; The liquid inlet end of the hydraulic pump (2) is connected to the hydraulic oil tank (1), and the liquid outlet end is connected to an oil outlet (21) via a pipeline; The motor (3) is used to drive the hydraulic pump (2) to output the hydraulic oil stored in the hydraulic oil tank (1) from the oil outlet (21); The P port of the lifting valve group (4) is connected to the oil outlet (21), and the A port is connected to the rodless chamber of the master cylinder (5); the T port of the lifting valve group (4) is connected to the oil return port (11), and the B port is connected to the rod chamber of the master cylinder (5); When the oil rod load of the master oil cylinder (5) rises rapidly, the hydraulic oil enters the rodless cavity of the master oil cylinder (5) to lift the oil rod; When the load on the oil rod of the master oil cylinder (5) rises slowly, the hydraulic oil flows back from the rod chamber of the master oil cylinder (5) into the hydraulic oil tank (1); When the load on the oil rod of the master oil cylinder (5) decreases, the hydraulic oil flows back from the rodless chamber of the master oil cylinder (5) into the outlet of the hydraulic pump (2), and drives the motor (3) to reverse and generate electricity; The rod chamber of the master cylinder (5) is also connected to the hydraulic oil tank (1) via a one-way valve A (12) for balancing the pressure between the rod chamber and the hydraulic oil tank (1) when returning oil.

2. The energy recovery and feedback device for a rubber hydraulic vulcanizer according to claim 1, characterized in that: The lifting valve group (4) comprises: an electro-hydraulic reversing valve (41), an electromagnetic stop valve A (42), an electromagnetic stop valve B (43), and an electromagnetic stop valve C (44); The P port of the electro-hydraulic reversing valve (41) is connected to the oil outlet (21), and the A port is connected to the rodless chamber of the master oil cylinder (5) through the electromagnetic stop valve A (42); The T port of the electro-hydraulic reversing valve (41) is connected to the oil return port (11), and the B port is connected to the rod chamber of the master cylinder (5) through the electromagnetic stop valve B (43); The P port of the electro-hydraulic reversing valve (41) is also connected to the rod chamber of the master cylinder (5) via an electromagnetic stop valve C (44).

3. The energy recovery and feedback device for a rubber hydraulic vulcanizer according to claim 2, characterized in that: A pressure measuring joint A (51) and a pressure sensor A (52) are also installed on the pipeline connecting the rodless chamber of the master oil cylinder (5) and the electromagnetic stop valve A (42).

4. The energy recovery and feedback device for a rubber hydraulic vulcanizer according to claim 2, characterized in that: A pressure measuring joint B (53) and a pressure sensor B (54) are also installed on the common pipeline connecting the rod chamber of the master oil cylinder (5) and the electromagnetic stop valve B (43) and the electromagnetic stop valve C (44).

5. The energy recovery and feedback device for a rubber hydraulic vulcanizer according to claim 2, characterized in that: A one-way valve B (45) is installed on the pipeline connecting the P port of the electro-hydraulic reversing valve (41) and the electromagnetic stop valve C (44).

6. The energy recovery and feedback device for a rubber hydraulic vulcanizer according to any one of claims 1 to 5, characterized in that: It also includes a water cooling device (6) for cooling the hydraulic oil in the hydraulic oil tank (1), and the water cooling device (6) is powered by reverse power generation by the motor (3).

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