Double-wire intelligent integrated metering control box

Abstract

The utility model belongs to the technical field of lubricating grease distribution systems, and discloses a double-line intelligent integrated metering control box which comprises an oil collecting block installed on a bottom plate in a stainless steel protective box, and a two-position three-way electric reversing valve A, a one-way throttle valve A, a flow meter A, a two-position three-way electric reversing valve B, a one-way throttle valve B and a flow meter B are integrally installed on the oil collecting block. A port P of the two-position three-way electric reversing valve A and a port P of the two-position three-way electric reversing valve B are jointly connected with an oil supply pipe P; a port R of the two-position three-way electric reversing valve A and a port R of the two-position three-way electric reversing valve B are jointly connected with an oil return pipe R; oil outlet pressure measuring ports of the two two-position three-way electric reversing valves are respectively provided with a pressure sensor. An electrical control module is mounted on a box door of the stainless steel protection box; and a pluggable electrical coupler is mounted on the control box. The oil supply of the whole lubricating system is more flexible, whether the distributor in the area where the metering control box supplies oil leaks or is blocked or not is monitored in real time, and the overall manufacturing cost is low.

Description

Technical Field

[0001] This utility model belongs to the technical field of grease separation system, specifically a dual-line intelligent integrated metering control box. Background Technology

[0002] Dual-line lubrication systems are a common type of centralized lubrication system and are still widely used in equipment across various industries. Conventional dual-line lubrication systems offer advantages such as simple operating principles, convenient system expansion, and the ability to maintain normal lubrication at other points even if a single lubrication point fails. However, they also have the following disadvantages: 1. All distributors in the system have the same lubrication cycle, making it impossible to set different cycles for each distributor based on the specific operating conditions of each lubrication point; 2. There is no electrical signal feedback for distributor operation, requiring on-site inspection by personnel to confirm whether the distributor is supplying oil correctly. This is time-consuming, labor-intensive, and poses significant safety hazards. Often, problems with the lubrication system are only discovered when equipment malfunctions due to insufficient lubrication. Furthermore, in many operating conditions, distributors are installed in harsh environments such as continuous casting and rolling mills, where personnel cannot access the equipment for inspection during operation.

[0003] While current intelligent lubrication systems can effectively solve the aforementioned problems, they are very expensive and require highly skilled personnel for maintenance because each point in the intelligent lubrication system needs to be equipped with an actuator and a detection element to achieve single-point control and detection.

[0004] The relevant reference CN219160100U discloses a dual-line intelligent oil distribution tank. Its combined dual-line distributor includes a supply body, a lower intermediate body, an upper distributor of the same number as the lower intermediate body, and an end body. The upper distributors are fixed to the lower intermediate body with screws. The distributor body of the upper distributor has an oil supply piston chamber and a control piston chamber. The oil supply piston is installed in the oil supply piston chamber of the distributor body. A magnet is installed at the right end of the oil supply piston. A magnetic switch is installed in the screw hole at the right end of the oil supply piston chamber of the distributor body. The control piston is installed in the control piston chamber of the distributor body. Both ends are sealed with screw plugs. The lower intermediate body has an oil outlet and an oil inlet. It adopts a modular structure, which can flexibly increase or decrease the number of oil outlets of the distributor. However, the oil supply to the lubrication system is not very flexible. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a dual-line intelligent integrated metering control box that makes the oil supply of the entire lubrication system more flexible, monitors in real time whether the distributor in the area supplied by the metering control box is leaking or blocked, and has a much lower overall cost than the intelligent lubrication system.

[0006] To address the above technical problems, this utility model provides a dual-line intelligent integrated metering control box, including an oil collection block installed on the bottom plate inside a stainless steel protective box. The oil collection block integrates and installs a two-position three-way electric directional valve A, a one-way throttle valve A, a flow meter A, a two-position three-way electric directional valve B, a one-way throttle valve B, and a flow meter B. The P ports of the two-position three-way electric directional valve A and the two-position three-way electric directional valve B are connected to the oil supply pipe P. The R ports of the two-position three-way electric directional valve A and the two-position three-way electric directional valve B are connected to the return oil pipe R. A pressure sensor A is installed on the oil outlet pressure test port of the two-position three-way electric directional valve A, and a pressure sensor B is installed on the oil outlet pressure test port of the two-position three-way electric directional valve B. An electrical control module is installed on the door of the stainless steel protective box. A pluggable electrical connector is fixed to the bottom side plate of the stainless steel protective box.

[0007] By adopting the above technical solution, the control box is equipped with a dual-way two-position three-way electric reversing valve and a pressure sensor. The original dual-line pipeline layout of the system can remain unchanged. By adding a dual-line intelligent integrated metering control box to the main pipe to each lubrication sub-equipment, it is possible to achieve zoned control of different lubrication sub-equipment. The oil supply interval and number of oil supply for each zone can be set independently, making the oil supply of the entire lubrication system more flexible.

[0008] Preferably, the electrical control module is covered with a module protective cover, which is installed on the door of the enclosure and has an openable transparent cover.

[0009] By adopting the above technical solution, the module protective cover covers the electrical control module, and the display screen can be viewed through the transparent cover. The display screen can be operated by lifting the transparent cover.

[0010] Preferably, a flow meter A and a one-way throttle valve A are installed in parallel after port C of the two-position three-way electric directional valve A, and a pressure sensor A is installed on port C; the flow meter A and the one-way throttle valve A are connected to the main pipeline A after being connected in parallel; the P port of the two-position three-way electric directional valve A is connected to the oil supply pipeline P, and the R port is connected to the oil return pipeline R; the pressure sensor A is electrically connected to the electrical control module.

[0011] By adopting the above technical solution, flow meter A measures the lubricant supplied to main pipeline A and displays the cumulative flow and the single flow required for pressurizing main pipeline A on the electrical control module. Through the coordinated operation of flow meter A, pressure sensor A, two-position three-way electric directional valve A, and electrical control module 4, intelligent monitoring and fault diagnosis of the dual-line lubrication system are achieved, quickly distinguishing between leaks and blockages, reducing manual troubleshooting time, and improving maintenance efficiency.

[0012] Preferably, a flow meter B and a one-way throttle valve B are installed in parallel after port C of the two-position three-way electric directional valve B, and a pressure sensor B is installed on port C; the flow meter B and the one-way throttle valve B are connected to the main pipeline B after being connected in parallel; the R port of the two-position three-way electric directional valve B is connected to the return oil pipe R, and the P port is connected to the supply oil pipe P; the pressure sensor B is electrically connected to the electrical control module.

[0013] By adopting the above technical solution, flow meter B measures the lubricant supplied to main pipeline B and displays the cumulative flow and the single flow required for pressurizing main pipeline B on the electrical control module. Through the coordinated operation of flow meter B, pressure sensor B, two-position three-way electric directional valve B, and electrical control module, intelligent monitoring and fault diagnosis of the dual-line lubrication system are achieved, quickly distinguishing between leaks and blockages, reducing manual troubleshooting time, and improving maintenance efficiency.

[0014] Preferably, the two-position three-way electric directional valve A, the two-position three-way electric directional valve B, and the electrical control module are electrically connected.

[0015] By adopting the above technical solution, the two-position three-way electric directional valves A and B are electrically connected through the electrical control module, realizing automated control of fluid flow direction. The response is rapid, the operation is simple, and the automation level of the system is improved.

[0016] Preferably, flow meter A, flow meter B, and electrical control module are electrically connected.

[0017] By adopting the above technical solution, the electrical control module analyzes the flow meter data in real time. When an abnormal flow is detected, such as a sudden drop in flow or exceeding the limit, an alarm mechanism is immediately triggered.

[0018] Preferably, the communication between the electrical control module and the external main control cabinet is via Powerbus communication.

[0019] By adopting the above technical solution, the electrical control module and the external main control cabinet use Powerbus communication, which is mature, reliable, and simple to wire.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 1. This utility model comes with a dual-path two-position three-way electric reversing valve and a pressure sensor. The original dual-line pipeline layout of the system can remain unchanged. A dual-line intelligent integrated metering control box is added to the main pipe to each lubrication sub-equipment to realize zoned control of different lubrication sub-equipment. The oil supply interval and number of oil supply for each zone can be set independently, making the oil supply of the entire lubrication system more flexible.

[0022] 2. This utility model's flow meter measures the lubricant supplied to the main pipeline and displays the cumulative flow and the single flow required for pressurizing the main pipeline on the electrical control module. Through the coordinated operation of the flow meter, pressure sensor, two-position three-way electric directional valve, and electrical control module, intelligent monitoring and fault diagnosis of the dual-line lubrication system are achieved, quickly distinguishing between leaks and blockages, reducing manual troubleshooting time, and improving maintenance efficiency.

[0023] 3. The electrical interface of this utility model adopts a pluggable electrical connector. When upgrading the original dual-line lubrication system, the main control box of the corresponding area of ​​the main pipeline is replaced with this dual-line intelligent integrated metering control box. After electrical wiring, the operation and maintenance of the system are not significantly different from the original system. Existing maintenance personnel can quickly get started. There is no need to configure an actuator separately for each lubrication point distributor. The overall cost is much lower than that of the intelligent lubrication system, so it has good market prospects. Attached Figure Description

[0024] Figure 1 This is a schematic diagram illustrating the removal of the cabinet door in this utility model;

[0025] Figure 2 This is a cross-sectional view of the present invention;

[0026] Figure 3 This is a schematic diagram of the present invention;

[0027] Figure 4 This is a schematic diagram of two two-position three-way electric directional valves connected in parallel according to this utility model.

[0028] Drawing No.: 1. High-pressure ball valve, 2. Return oil pipe R, 3. Supply oil pipe P, 4. Electrical control module, 5. Two-position three-way electric directional valve A, 6. Pressure sensor A, 7. One-way throttle valve A, 8. Flow meter A, 9. Main pipeline A, 10. One-way throttle valve B, 11. Flow meter B, 12. Main pipeline B, 13. Pressure sensor B, 14. Two-position three-way electric directional valve B, 15. Module protective cover, 16. Stainless steel protective box, 17. Oil collection block, 18. Pluggable electrical connector. Detailed Implementation

[0029] like Figure 1 , 2 As shown, a dual-line intelligent integrated metering control box has an oil collection block 17 fixedly installed on the bottom plate inside a stainless steel protective box 16. A two-position three-way electric directional valve A5, a one-way throttle valve A7, a flow meter A8, a two-position three-way electric directional valve B14, a one-way throttle valve B10, and a flow meter B11 are all fixedly installed on the oil collection block 17 using a plate-type structure. This plate-type installation results in a compact structure, fewer leakage points, and convenient maintenance and replacement. The oil collection block 17 connects the oil ports of each component through flow channel holes. Figure 4As shown, the P port of the two-position three-way electric directional valve A5 and the P port of the two-position three-way electric directional valve B14 are both connected to the oil supply pipe P3; the R port of the two-position three-way electric directional valve A5 and the R port of the two-position three-way electric directional valve B14 are both connected to the return oil pipe R. The two-position three-way electric directional valve A5 has a pressure test port connected to the oil outlet C, and a pressure sensor A6 is installed thereon. The two-position three-way electric directional valve B14 has a pressure test port connected to the oil outlet C, and a pressure sensor B13 is installed thereon. The electrical control module 4 is installed on the door of the stainless steel protective box 16. The module protective cover 15 is installed on the outside of the stainless steel protective box 16 door, covering the display and operation screen of the electrical control module 4. The module protective cover 15 has an openable transparent cover, through which the display and operation screen can be viewed. Opening the transparent cover allows operation of the display and operation screen. This application integrates the entire unit within the protective box, exhibiting good environmental adaptability and suitable for use in harsh conditions such as outdoor exposure and dusty environments. Equipped with a dual-way two-position three-way electric directional valve and pressure sensor, the original dual-line pipeline layout of the system can remain unchanged. By adding a dual-line intelligent integrated metering control box to the main pipe to each lubrication sub-equipment, it is possible to achieve zoned control of different lubrication sub-equipment. The oil supply interval and number of oil supply for each zone can be set independently, making the oil supply of the entire lubrication system more flexible.

[0030] Both the 2-position 3-way electric directional control valve A5 and the 2-position 3-way electric directional control valve B14 use an electric linear actuator motor as the actuating element, which features a simple structure, large thrust, and high reliability. When the electric linear actuator motor is energized in the forward direction, the actuator pushes the valve core to extend, connecting the P port and C port of the valve. When the electric linear actuator motor is energized in the reverse direction, the actuator pushes the valve core to retract, connecting the R port and C port of the valve.

[0031] Flowmeters A8 and B11 are volumetric meters. Each flowmeter is equipped with a signal switch that sends a pulse signal for every 1 ml of medium passing through.

[0032] A high-pressure ball valve 1 is installed at the inlet of the return oil pipe R2, and is connected to the return oil port on the oil collection block 17 via a connecting pipe. A high-pressure ball valve 1 is installed at the inlet of the supply oil pipe P3, and is connected to the supply oil port on the oil collection block 17 via a connecting pipe. If the dual-line intelligent integrated metering control box needs to be inspected online, both high-pressure ball valves 1 can be directly closed without affecting the normal operation of other dual-line intelligent integrated metering control boxes in the system.

[0033] The pluggable electrical connector 18 is fixedly mounted on the bottom side plate of the stainless steel protective box 16. The external wiring of the electrical control module 4 is led to the mounting bracket at one end of the pluggable electrical connector 18. The control line from the main control cabinet is connected to the plug end of the pluggable electrical connector 18. Replacing the dual-wire intelligent integrated metering control box does not require disassembling the circuit; simply unplug the pluggable electrical connector 18. After replacing the new dual-wire intelligent integrated metering control box, connect the pluggable electrical connector 18 to the mounting bracket of the pluggable electrical connector 18 on the new control box. Maintenance is convenient. Replacing the dual-wire intelligent integrated metering control box does not require disassembling the circuit and does not require the involvement of professional electrical personnel.

[0034] like Figure 2 As shown, a flow meter A8 and a one-way throttle valve A7 are installed in parallel through a pipeline at port C of the two-position three-way electric directional valve A5. A pressure sensor A6 is installed at the pressure measuring port connected to the oil outlet C. The flow meter A8 and the one-way throttle valve A7 are connected in parallel to the main pipeline A9. The P port of the two-position three-way electric directional valve A5 is connected to the oil supply pipe P3, and the R port is connected to the oil return pipe R2. The pressure sensor A6 is electrically connected to the electrical control module 4. The flow meter A8 measures the lubricant supplied to the main pipeline A9 and displays the cumulative flow and the single flow required to pressurize the main pipeline A9 on the electrical control module 4. Through the coordinated operation of the flow meter A8, the pressure sensor A6, the two-position three-way electric directional valve A5, and the electrical control module 4, intelligent monitoring and fault diagnosis of the dual-line lubrication system are achieved, quickly distinguishing between leaks and blockages, reducing manual troubleshooting time, and improving maintenance efficiency.

[0035] A flow meter B11 and a one-way throttle valve B10 are installed in parallel at port C of the 2-position 3-way electric directional valve B14 via a pipeline. A pressure sensor B13 is installed at the pressure measuring port connected to the oil outlet C. The flow meter B11 and the one-way throttle valve B10 are connected in parallel to the main pipeline B12. The R port of the 2-position 3-way electric directional valve B14 is connected to the return oil pipe R2, and the P port is connected to the supply oil pipe P3. The pressure sensor B13 is electrically connected to the electrical control module 4. The flow meter B11 measures the lubricant supplied to the main pipeline B12 and displays the cumulative flow and the single flow required for pressurizing the main pipeline B12 on the electrical control module 4. Through the coordinated operation of the flow meter B11, the pressure sensor B13, the 2-position 3-way electric directional valve B14, and the electrical control module 4, intelligent monitoring and fault diagnosis of the dual-line lubrication system are achieved, quickly distinguishing between leaks and blockages, reducing manual troubleshooting time, and improving maintenance efficiency.

[0036] The two-position three-way electric directional valves A5 and B14 are electrically connected to the electrical control module 4. The electrical connection between the two-position three-way electric directional valves A5 and B14 via the electrical control module 4 enables automated control of fluid flow direction, providing rapid response, simple operation, and improving the system's automation level.

[0037] Flowmeters A8 and B11 are electrically connected to the electrical control module 4. The electrical control module 4 analyzes the flowmeter data in real time and immediately triggers an alarm mechanism when it detects abnormal flow, such as a sudden drop in flow or exceeding limits.

[0038] Working principle:

[0039] Each dual-line intelligent integrated metering control box is connected to the main control cabinet of the dual-line intelligent lubrication system via a bus control cable. Communication is via PowerBus. The lubrication pump in the lubrication system uses a pressure-maintaining oil supply method. The system can operate in "manual mode" and "automatic mode".

[0040] Manual Mode: Press the "Start" button on the display screen of the electrical control module 4 of the dual-line intelligent integrated metering control box. The electric linear actuator motor of the two-position three-way electric directional valve A5 is energized in the forward direction, causing the valve core to extend. The P port of the valve is connected to the C port. The medium in the oil supply pipe P3 enters the flow meter A8 through the two-position three-way electric directional valve A5. After being measured by the flow meter A8, the medium enters the main pipeline A9 and is supplied to the dual-line distributor connected at the rear. (At this time, the actuator of the electric linear actuator motor of the two-position three-way electric directional valve B14 is in the retracted state, and the R port of the valve is connected to the C port.) Pipeline B12 is connected to return oil pipe R2 for decompression via the check valve inside the one-way throttle valve B10 and the two-position three-way electric directional valve B14. When all the downstream dual-line distributors are activated, the pressure in the supply oil pipe P3 continues to rise. When the pressure reaches the set pressure of the pressure sensor A6, the electrical control module 4 issues a command, and the electric linear actuator motor of the two-position three-way electric directional valve A5 is energized in the reverse direction, causing the valve core to retract. The R port and C port of the valve are connected. Main pipeline A9 is then connected to return oil pipe R2 for decompression via the check valve inside the one-way throttle valve A7 and the two-position three-way electric directional valve A5. Simultaneously, the electric linear actuator motor of the two-position three-way electric directional valve B14 is energized in the forward direction, causing the valve core to extend. The P port of the valve connects to the C port. The medium in the oil supply pipe P3 enters the flow meter B11 through the two-position three-way electric directional valve B14. After being measured by the flow meter B11, the medium enters the main pipeline B12 and is supplied to the downstream dual-line distributor. When the downstream dual-line distributor is fully activated, the pressure in the oil supply pipe P3 continues to rise. When the pressure reaches the set pressure of the pressure sensor B13, the electrical control module 4 issues a command, and the two-position three-way electric directional valve B14... When the linear actuator motor is energized in the reverse direction, the actuator retracts the valve core. Simultaneously, the electric linear actuator motor of the two-position three-way electric directional valve A5 is energized in the forward direction, causing the valve core to extend. The system repeats the above process, with main pipeline A9 and main pipeline B12 alternately supplying oil until the "Stop Lubrication" button is pressed on the display screen of electrical control module 4. Electrical control module 4 then controls both the electric linear actuator motors of the two-position three-way electric directional valve A5 and B14 to be in the retracted state (both main pipelines A9 and B12 are connected to the return oil pipe R2 for load relief). This mode is used during system commissioning and maintenance.

[0041] Automatic Mode: Parameters such as "oil supply interval time," "oil supply monitoring time," and "number of cycles" are preset on the main control cabinet of the lubrication system for each dual-line intelligent integrated metering control box. When a dual-line intelligent integrated metering control box needs oil supply after the set oil supply interval time, the main control cabinet issues a lubrication command. Upon receiving the command, the electrical control module 4 on the corresponding dual-line intelligent integrated metering control box controls the electric linear actuator motor of the two-position three-way electric directional valve A5 to be energized in the forward direction, causing the valve core to extend and supply oil to the main pipeline A9 (the actuator of the electric linear actuator motor of the two-position three-way electric directional valve B14 is in the retracted state, and the main pipeline B12 is unloaded to the return oil pipe R2). When all the rear dual-line distributors are activated, the pressure in the oil supply pipe P3 continues to rise. When the pressure reaches the set pressure of the pressure sensor A6, the electrical control module 4 issues a command, and the electric linear actuator motor of the two-position three-way electric directional valve A5 is energized in the reverse direction, causing the valve core to retract and the main pipeline A9 to resume operation. 9 is connected to the return oil pipe R2 for unloading. At the same time, the electric linear actuator motor of the two-position three-way electric directional valve B14 is energized in the forward direction, causing the valve core to extend and supply oil to the main pipeline B12. When all the rear dual-line distributors are activated, the pressure in the oil supply pipe P3 continues to rise. When the pressure reaches the set pressure of the pressure sensor B13, the system counts one oil supply cycle. The system repeats the above process, with main pipeline A9 and main pipeline B12 supplying oil alternately. When the number of oil supply cycles reaches the preset number, the current oil supply is completed. The electrical control module 4 controls the electric linear actuator motors of the two-position three-way electric directional valve A5 and B14 to be in the retracted state (both main pipeline A9 and main pipeline B12 are connected to the return oil pipe R2 for unloading), and the system enters the interval timing. The system monitors the oil supply time of the dual-line intelligent integrated metering control box each time. The monitoring time is 1.5 times the time required for the dual-line intelligent integrated metering control box to work normally once. If the dual-line intelligent integrated metering control box fails to complete the oil supply within the set monitoring time, the main control cabinet will issue a "oil supply delay" fault signal for the dual-line intelligent integrated metering control box.

[0042] When the dual-line intelligent integrated metering control box is working, flow meter A8 will measure the lubricant supplied to the main pipeline A9 and display the cumulative flow and the single flow required for pressurizing the main pipeline A9 on the electrical control module 4. We can set an alarm value greater than this flow value. When the single flow recorded by the flow meter reaches this value, the system will issue a "leakage in main pipeline A" alarm, prompting the staff to check whether there is a leak in the pipeline or distributor after the main pipeline A. We can also set an alarm value less than this flow value. When the single flow recorded by the flow meter does not reach this value, the system will issue a "blockage in main pipeline A" alarm, prompting the staff to check whether the pipeline after the main pipeline A is blocked or whether some oil supply points of the dual-line distributor are not supplying oil.

[0043] Similarly, when the dual-line intelligent integrated metering control box is working, flow meter B11 will measure the lubricant supplied to the main pipeline B12 and display the cumulative flow and the single flow required for pressurizing the main pipeline B12 once on the electrical control module 4. We can set an alarm value greater than this flow value. When the single flow recorded by the flow meter reaches this value, the system will issue a "Main pipeline B leakage" alarm, prompting the staff to check whether there is a leak in the pipeline or distributor after the main pipeline B. We can also set an alarm value less than this flow value. When the single flow recorded by the flow meter does not reach this value, the system will issue a "Main pipeline B blockage" alarm, prompting the staff to check whether the pipeline after the main pipeline B is blocked or whether some oil supply points of the dual-line distributor are not supplying oil.

[0044] During normal operation, the throttle valves on one-way throttle valve A7 and one-way throttle valve B10 are in the closed state. If flow meter A8 or flow meter B11 malfunctions during operation, in order to ensure the normal oil supply to the equipment behind the dual-line intelligent integrated metering control box, one-way throttle valve A7 and one-way throttle valve B10 can be opened temporarily to directly connect the inlet and outlet of the flow meter.

[0045] The custom-developed electrical control module 4 with a screen adopts Powerbus communication, which intuitively displays the operating status of the dual-line intelligent integrated metering control box on site, and can be manually operated and tested on site. The communication between the electrical control module (4) and the external main control cabinet is Powerbus communication connection, realizing the sharing of a single two-core bus for signal and power supply. Due to its non-polarity wiring and arbitrary topology performance, it is mature, reliable, and easy to wire, avoiding wiring errors during construction, thus simplifying the construction design. The electrical control module 4 monitors the entire process. In addition to displaying the various parameters and fault alarm information mentioned above, it also monitors the temperature inside the dual-line intelligent integrated metering control box and the working current of the two linear push rod motors throughout the process. If the set value is exceeded, a corresponding fault prompt will be issued, which has a high degree of intelligence.

[0046] This application discloses a dual-line intelligent integrated metering control box. The original dual-line pipeline layout of the system can remain unchanged. The dual-line intelligent integrated metering control box is added to the main pipes to each lubrication sub-equipment, enabling zoned control of different lubrication sub-equipment (the oil supply interval and number of oil supplies for each zone can be set independently). It also provides real-time monitoring of the oil supply volume of the two oil supply pipes in each zone to detect oil leaks or blockages in the pipelines and dual-line distributors within the area supplied by the metering control box. This application effectively solves the problems existing in traditional dual-line lubrication systems. Furthermore, retrofitting existing dual-line lubrication systems is relatively convenient: the pump station and main pipeline can be reused, the old distributor main electrical control box can be upgraded, and the dual-line intelligent integrated metering control box can be added to the corresponding area of ​​the main pipeline after electrical wiring. The operation and maintenance of the system are not significantly different from the original system, and existing maintenance personnel can quickly learn to use it. There is no need to configure separate actuators for each lubrication point distributor, and the overall cost is much lower than that of an intelligent lubrication system, thus possessing good market prospects.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-line intelligent integrated metering control box, comprising an oil collection block (17) installed on the bottom plate inside a stainless steel protective box (16), characterized in that: The oil collecting block (17) is equipped with a two-position three-way electric directional valve A (5), a one-way throttle valve A (7), a flow meter A (8), a two-position three-way electric directional valve B (14), a one-way throttle valve B (10), and a flow meter B (11); the P port of the two-position three-way electric directional valve A (5) and the P port of the two-position three-way electric directional valve B (14) are connected to the oil supply pipe P (3); the R port of the two-position three-way electric directional valve A (5) and the two-position three-way electric directional valve B (14) are connected to the oil supply pipe P (3); The R port of the directional control valve B (14) is connected to the return oil pipe R (2); a pressure sensor A (6) is installed on the oil outlet pressure test port of the two-position three-way electric directional control valve A (5), and a pressure sensor B (13) is installed on the oil outlet pressure test port of the two-position three-way electric directional control valve B (14); an electrical control module (4) is installed on the door of the stainless steel protective box (16); a pluggable electrical connector (18) is fixed on the bottom side plate of the stainless steel protective box (16).

2. The dual wire intelligent integrated metering and control box of claim 1, wherein: The electrical control module (4) is covered with a module protective cover (15), which is installed on the door of the box and has an openable transparent cover.

3. The dual wire intelligent integrated metering and control box of claim 1, wherein: A flow meter A (8) and a one-way throttle valve A (7) are installed in parallel after port C of the two-position three-way electric directional valve A (5). A pressure sensor A (6) is installed on port C. The flow meter A (8) and the one-way throttle valve A (7) are connected in parallel to the main pipeline A (9). The P port of the two-position three-way electric directional valve A (5) is connected to the oil supply pipe P (3), and the R port is connected to the oil return pipe R (2). The pressure sensor A (6) is electrically connected to the electrical control module (4).

4. The dual wire intelligent integrated metering and control box of claim 1, wherein: A flow meter B (11) and a one-way throttle valve B (10) are installed in parallel after port C of the two-position three-way electric directional valve B (14). A pressure sensor B (13) is installed on port C. The flow meter B (11) and the one-way throttle valve B (10) are connected in parallel to the main pipeline B (12). The R port of the two-position three-way electric directional valve B (14) is connected to the return oil pipe R (2), and the P port is connected to the supply oil pipe P (3). The pressure sensor B (13) is electrically connected to the electrical control module (4).

5. The dual wire intelligent integrated metering and control box of claim 1, wherein: The two-position three-way electric directional valve A (5), the two-position three-way electric directional valve B (14), and the electrical control module (4) are electrically connected.

6. The dual wire intelligent integrated metering and control box of claim 1, wherein: The flow meter A (8), flow meter B (11) and electrical control module (4) are electrically connected.

7. A dual wire smart integrated metering and control box as claimed in any one of claims 1 to 6, characterized in that: The electrical control module (4) communicates with the external main control cabinet via Powerbus communication.

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