A centralized lubrication intelligent control system and method

Abstract

The present invention discloses a centralized lubrication intelligent control system and method, which relates to the technical field of lubricating grease distribution, including an intelligent distributor, a control cabinet, a host computer, a pneumatic pump and an oil barrel, wherein the oil barrel is connected to several intelligent distributors via a pneumatic pump and an oil supply pipeline, and the pneumatic pump is equipped with a pneumatic proportional valve, and the intelligent distributor is equipped with a pressure transmitter. The control cabinet is communicatively connected to the pneumatic proportional valve, the intelligent distributor and the pressure transmitter, and is used to send control instructions and receive feedback information; the host computer is communicatively connected to several control cabinets, and is used to issue control instructions to each control cabinet and receive feedback information from each control cabinet. It can be seen that the present invention can automatically manage multiple intelligent distributors without excessive manual intervention, and the operating parameters of each intelligent distributor can be set separately, and the operating status can be fed back to the control cabinet and the host computer in real time for centralized monitoring and management. It is also configured with a cloud platform, which can be remotely monitored and viewed and parameter adjusted through mobile phones and computers.

Description

Technical Field

[0001] The present invention relates to the technical field of lubricating grease distribution, and more specifically to a centralized lubrication intelligent control system and method. Background Art

[0002] The existing grease distribution control system has a low degree of automation, requires a lot of manual intervention, has low work efficiency, and has insufficient feedback on the working status, and cannot be remotely monitored, resulting in lagging management and control. In addition, the existing grease distributors mostly use electromagnetic adsorption to drive the valve core to start and close the distribution valve. This type of grease distribution valve is prone to difficulty in closing and opening under high-pressure grease extrusion, and malfunctions, resulting in the inability to supply oil to the equipment that needs lubrication, affecting the operation of the grease distribution control system, and even causing equipment damage. Summary of the invention

[0003] The present invention provides a centralized lubrication intelligent control system and method, aiming to solve the above problems existing in the prior art.

[0004] The present invention adopts the following technical solution:

[0005] A centralized lubrication intelligent control system comprises an intelligent distributor, a control cabinet, a host computer, a pneumatic pump and an oil drum; the oil drum is connected to the oil inlet port of the pneumatic pump, the oil outlet port of the pneumatic pump is connected to a number of the intelligent distributors via an oil supply pipeline, and the intelligent distributor is connected to a number of lubrication points, the pneumatic pump is equipped with a pneumatic proportional valve, and each intelligent distributor is equipped with a pressure transmitter; the control cabinet is communicatively connected to the pneumatic proportional valve, the intelligent distributor and the pressure transmitter, and is used to control the pneumatic pump and the intelligent distributor, and receive feedback information from the pneumatic pump, the intelligent distributor and the pressure transmitter; the host computer is communicatively connected to a number of the control cabinets, and is used to issue control instructions to each control cabinet, and receive feedback information from each control cabinet.

[0006] Furthermore, the control cabinet is communicatively connected to the oil drum for receiving oil level feedback information of the oil drum.

[0007] Preferably, the control cabinet and the intelligent distributor are connected via PowerBus communication.

[0008] Furthermore, it also includes a cloud platform, which is communicatively connected to several of the control cabinets and is used to facilitate the mobile terminal to remotely monitor and manage each control cabinet through the cloud platform.

[0009] Furthermore, the intelligent distributor includes a plurality of distribution valves and a control circuit board. The distribution valve includes a valve body, a valve core, a screw and a motor. The valve body is provided with an installation cavity, and is provided with an oil inlet and an oil outlet communicated with the installation cavity, and the valve core is provided with an oil passage. The valve core is movably arranged in the installation cavity, and the upper end of the valve core is connected to the screw used to drive the valve core, thereby causing the oil inlet, oil passage and oil outlet to form a passage or a disconnection, and the screw is also connected to a motor used to rotate the screw. Several of the distribution valves are connected in parallel, and the control circuit board is communicatively connected to each distribution valve for controlling the distribution valve; the control cabinet is communicatively connected to the control circuit board.

[0010] Furthermore, the valve body is provided with the oil inlet and oil outlet on both sides of the installation cavity, and the side wall of the valve core is provided with an annular recess for forming the oil outlet; the lower end of the screw is threadedly connected to the valve core, and the valve core is provided with a limit pin for preventing it from rotating with the screw; it also includes a detection ring and a first sensor for communication connection control circuit board, the upper end of the valve core extends to the outside of the valve body, and the detection ring is fixedly provided; the two first sensors are respectively arranged at both ends of the moving trajectory of the detection ring.

[0011] From the above description of the structure of the present invention, it can be seen that the present invention has the following advantages:

[0012] First, the present invention includes an intelligent distributor, a control cabinet, a host computer, a pneumatic pump and an oil drum. The oil drum is connected to several intelligent distributors via a pneumatic pump and an oil supply pipeline. The pneumatic pump is equipped with a pneumatic proportional valve, and the intelligent distributor is equipped with a pressure transmitter. The control cabinet is communicatively connected to the pneumatic proportional valve, the intelligent distributor and the pressure transmitter for sending control instructions and receiving feedback information; the host computer is communicatively connected to several control cabinets for issuing control instructions to each control cabinet and receiving feedback information from each control cabinet. It can be seen that the present invention can automatically manage multiple intelligent distributors without excessive manual intervention. In addition, the operating status of each intelligent distributor can be fed back to the control cabinet in real time, and even sent to the host computer installed in the central control room, which is convenient for centralized monitoring and management.

[0013] Secondly, in the present invention, pressure transmitters are provided on the oil supply pipeline, each intelligent distributor, etc. The control cabinet can monitor the grease pressure of each point in real time through each pressure transmitter, and change the output pressure by adjusting the pneumatic proportional valve, thereby adjusting the current grease pressure of the intelligent distributor that needs oil to pass to an appropriate number, thereby avoiding the situation where the current grease pressure of a certain intelligent distributor is too small due to the distance of grease delivery or the influence of other intelligent distributors, resulting in the inability to supply oil and lubrication normally.

[0014] Thirdly, in the present invention, the control cabinet and the intelligent distributor are connected by PowerBus bus communication, and the intelligent distributor can be connected infinitely, and the system is highly scalable. In theory, a factory only needs one set of the system to control the lubrication points of all terminal equipment.

[0015] Fourthly, the present invention is also equipped with a cloud platform. In addition to monitoring and management through the host computer set up in the control room, it can also be remotely monitored and viewed and parameter adjustments can be performed anytime and anywhere through mobile phones and computers, which greatly improves work efficiency and simplicity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of the intelligent distributor in the present invention.

[0018] Figure 3 A cross-sectional view of a distribution valve in a smart distributor. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0020] like Figure 1 and Figure 2 As shown, a centralized lubrication intelligent control system mainly includes an intelligent distributor, a control cabinet, a host computer, a pneumatic pump and an oil barrel.

[0021] like Figure 1 and Figure 2 As shown, the oil barrel is connected to the oil inlet port of the pneumatic pump, the oil outlet port of the pneumatic pump is connected to several intelligent distributors via the oil supply pipeline, and the intelligent distributors are connected to the lubrication points of several terminal devices (a terminal device may have multiple lubrication points). The pneumatic pump is equipped with a pneumatic proportional valve for pressure setting, and each intelligent distributor and the oil supply pipeline and air supply pipeline are equipped with a pressure transmitter.

[0022] like Figure 1 and Figure 2As shown, the control cabinet is connected to the pneumatic pump, each intelligent distributor and each pressure transmitter by communication. The control cabinet is mainly used to receive the control instructions from the upper computer, and send the control instructions to the pneumatic proportional valve, intelligent distributor, etc., so as to control the pneumatic pump and the intelligent distributor. And the control cabinet is also used to receive feedback information from the pneumatic pump, the intelligent distributor and the pressure transmitter. Among them, the external air source is connected to the pneumatic pump through the pneumatic proportional valve, and the control cabinet controls the pneumatic proportional valve to adjust the pressure of the compressed air output to the pneumatic pump, and its pressure is transmitted to the control cabinet in real time through the corresponding pressure transmitter. If necessary, the control cabinet can also transmit the relevant information to the preset receiving terminal (such as a smart phone, etc.) through the cloud platform. As a preferred embodiment, the control cabinet and the intelligent distributor are connected by PowerBus bus communication, forming a control management framework with multiple intelligent distributors as PowerBus slaves and the control cabinet as the PowerBus master station, which can be infinitely connected in series as the intelligent distributor of the PowerBus slave. In addition, the control cabinet is connected to the oil barrel by communication to receive the oil level feedback information of the oil barrel.

[0023] like Figure 1 and Figure 2 As shown, the host computer is connected to multiple control cabinets through communication, which is used to issue control instructions to each control cabinet and receive feedback information from each control cabinet, so as to centrally display and control the operation information of the entire system (including abnormal alarm information).

[0024] like Figure 1 and Figure 2 As shown, the cloud platform is connected to each control cabinet for convenient remote monitoring and management of each control cabinet through the cloud platform using mobile terminals such as mobile phones and computers.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the above-mentioned intelligent distributor mainly includes six distribution valves 1, a guide plate 2 and a control circuit board 3 that is communicatively connected to the control cabinet. The six distribution valves 1 are arranged at each oil outlet port of the guide plate 2, and the oil inlet port of the guide plate 2 is connected to the oil supply pipeline. Of course, the number of distribution valves 1 is not limited to six, and can be increased or decreased as needed. The six branched pipes 4 of the guide plate 2 are respectively connected to the oil inlet port of each distribution valve 1. Since the guide plate 2 is a conventional component of the distributor, its structure and the specific assembly structure with the distribution valve 1 will not be repeated here. The control circuit board 3 is communicatively connected to each distribution valve 1, and is used to control each distribution valve 1. It can control any one of the distribution valves 1 individually, and can also control multiple distribution valves 1 at the same time.

[0026] like Figure 2 and Figure 3As shown, the distribution valve 1 mainly includes a valve body 5, a valve core 6, a screw 7, a motor 8 and a first base 19. The valve body 3 is vertically provided with a mounting cavity 9 that penetrates the valve body 3. The valve body 3 is provided with an oil inlet channel 10 and an oil outlet channel 11 on both sides of the mounting cavity 9 that are interconnected with the mounting cavity 7, and a corresponding oil inlet port 12 and an oil outlet port 13 are formed on the surface of the valve body 3.

[0027] like Figure 2 and Figure 3 As shown, the outer wall of the valve core 6 is provided with an annular recess, the valve core 6 is movably arranged in the installation cavity 9, and the oil passage 14 is formed by the annular recess. Preferably, the outer wall of the valve core 6 is movably embedded with a wear-resistant ring 15 for contacting the installation cavity 9. In addition, a plurality of sealing rings 16 are provided between the valve core 6 and the installation cavity 9 above and below the oil passage 14.

[0028] like Figure 2 and Figure 3 As shown, the valve core 6 is provided with a threaded hole 17, and the screw 7 is threadedly connected to the threaded hole 17. The valve body 5 is fixedly mounted with a first base 19 through four connecting columns 18, the motor 8 is fixedly mounted on the first base 1, and the output shaft of the motor 8 is integrally provided with the screw 7 downward.

[0029] like Figure 2 and Figure 3 As shown, in addition, an upper limit block 20 is fixedly provided at the bottom of the first base 19 for contacting the upper end of the valve core 6. A lower limit block 21 is fixedly provided at the bottom of the valve body 5 for contacting the lower end of the valve core 6.

[0030] like Figure 2 and Figure 3 As shown, the lower end of the valve core 6 is fixedly connected to the limit pin 22 , and one end of the limit pin 22 is movably inserted into the lower limit block 22 to prevent the valve core 6 from rotating with the screw 7 .

[0031] like Figure 2 and Figure 3 As shown, the motor 8 as a driving mechanism drives the screw 7 to rotate. Since the screw 7 and the valve core 6 are threadedly connected, and a limit pin is provided between the valve core 6 and the valve body 5 to prevent the valve core 6 from rotating, the valve core 6 moves down or up in the installation cavity 9 with the forward and reverse rotation of the screw 7, thereby causing the oil passage 14 to be connected or staggered with the oil inlet passage 10 and the oil outlet passage 11, thereby forming a passage or disconnection of the distribution valve 1.

[0032] like Figure 2 and Figure 3As shown, the valve body 5 also includes a detection ring 23 and a first sensor 24. The upper end of the valve core 6 is fixedly sleeved with a detection ring 23 with a rod 26 on the outside of the valve body 5. The sensing circuit board 25 equipped with two first sensors 24 is fixedly arranged on the first base 19, and the two first sensors 24 are respectively arranged at the two ends of the moving track of the rod 26 to correspond to the start and close states of the distribution valve 1. The control circuit board 3 is also fixedly arranged on the first base 19, and the sensing circuit board 25 is communicatively connected to the control circuit board 3.

[0033] like Figure 2 and Figure 3 As shown, the high-pressure grease filling intelligent distributor also includes an upper protective cover 27 and multiple lower protective covers 28. The upper protective cover 27 is used to wrap all the exposed parts assembled on the top of each valve body 1, such as the first base 19, the motor 8, the sensor circuit board 25 and the control circuit board 3, and strengthen the connection between each distribution valve. The lower protective cover 28 is used to wrap the limit pin 22 and the lower limit block 21.

[0034] like Figure 2 and Figure 3 As shown, in the above-mentioned intelligent distributor, screws are generally used as connecting members to achieve the fixed connection relationship between the two components in the first embodiment of the present invention.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the working mode of the present invention is:

[0036] When a lubrication point of the terminal equipment needs to be greased, the control cabinet sends a command to start the pneumatic pump and each intelligent distributor, open the distribution valve corresponding to the lubrication point that needs to be greased, and allow the grease to be delivered to the lubrication point through the pneumatic pump, oil supply pipeline, guide plate of the intelligent distributor, and distribution valve of the intelligent distributor.

[0037] During the grease filling process, each pressure transmitter monitors the grease pressure in real time and transmits it to the intelligent distributor as the PowerBus slave station, and then sends it to the control cabinet as the PowerBus master station. The control cabinet converts the PowerBus bus information into RS485 communication information and transmits it to the PLC inside the control cabinet for information processing. The PLC sends instructions to the pneumatic proportional valve based on the preset pressure value of the grease, and adjusts the output pressure of the pneumatic proportional valve in real time.

[0038] In order to improve flexibility, the centralized lubrication intelligent control system pre-sets the opening time, filling time and grease pressure for each lubrication point. According to the pre-set opening time of each lubrication point, the control cabinet can sequentially control the intelligent distributor to open the distribution valve leading to the corresponding lubrication point, complete the grease filling work of the lubrication points one by one, or complete the grease filling work of multiple lubrication points at the same time. The centralized lubrication intelligent control system adopts a patrol method for the opening time of all lubrication points, and the opening time, filling time and grease pressure of each lubrication point can be set separately. The time interval of each patrol can also be set, and all points work in a cycle according to the parameters set by the system. When the opening time and grease pressure are met, the distribution valve of the corresponding intelligent distributor is opened; when the filling time is met, the control cabinet sends a command to control the corresponding distribution valve valve core to close, disconnect the grease passage in the distribution valve, and complete the grease filling work of the lubrication point.

[0039] In addition, each control cabinet of the centralized lubrication intelligent control system can transmit the operating status of the site to the host computer in the central control room for centralized monitoring and management. At the same time, the control parameters of the site can also be adjusted on the host computer in the central control room. In addition, the system is also equipped with a cloud platform, which can view all the working conditions of the system and adjust the parameters anytime and anywhere through a portable mobile terminal such as a computer or a mobile phone.

[0040] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A centralized lubrication intelligent control system, characterized in that: It includes an intelligent distributor, a control cabinet, a host computer, a pneumatic pump and an oil barrel; the oil barrel is connected to the oil inlet port of the pneumatic pump, and the oil outlet port of the pneumatic pump is connected to several of the intelligent distributors via an oil supply pipeline, and the intelligent distributor is connected to several lubrication points; the pneumatic pump is equipped with a pneumatic proportional valve, and each intelligent distributor is equipped with a pressure transmitter; the control cabinet is communicatively connected to the pneumatic proportional valve, the intelligent distributor and the pressure transmitter, and is used to control the pneumatic pump and the intelligent distributor, and receive feedback information from the pneumatic pump, the intelligent distributor and the pressure transmitter, and each pressure transmitter monitors the grease pressure in real time and transmits it to the corresponding intelligent distributor and control cabinet; the output pressure is changed by adjusting the pneumatic proportional valve, and the current grease pressure of the intelligent distributor that needs to be oiled is adjusted to an appropriate number to avoid the current grease pressure of a certain intelligent distributor being too small due to the distance of grease delivery or the influence of other intelligent distributors, so as to avoid normal oil supply and lubrication; the host computer is communicatively connected to several of the control cabinets, and is used to issue control instructions to each control cabinet, and receive feedback information from each control cabinet.

2. According to claim 1, a centralized lubrication intelligent control system is characterized by: The control cabinet is communicatively connected to the oil drum and is used to receive oil level feedback information of the oil drum.

3. A centralized lubrication intelligent control system according to claim 1 or 2, characterized in that: The control cabinet and the intelligent distributor are connected by PowerBus communication.

4. The centralized lubrication intelligent control system according to claim 1 is characterized in that: It also includes a cloud platform, which is communicatively connected to a plurality of the control cabinets and is used to facilitate a mobile terminal to remotely monitor and manage each control cabinet through the cloud platform.

5. The centralized lubrication intelligent control system according to claim 1 is characterized by: The control cabinet is communicatively connected to a pneumatic proportional valve for pressure setting.

6. The centralized lubrication intelligent control system according to claim 1 is characterized by: The intelligent distributor includes a plurality of distribution valves, a guide plate and a control circuit board. The distribution valve includes a valve body, a valve core, a screw and a motor. The valve body is provided with an installation cavity, and is provided with an oil inlet and an oil outlet communicated with the installation cavity, and the valve core is provided with an oil passage. The valve core is movably arranged in the installation cavity, and the upper end of the valve core is connected to the screw used to drive the valve core, thereby causing the oil inlet, oil passage and oil outlet to form a passage or a disconnection, and the screw is also connected to a motor used to rotate the screw. Several of the distribution valves are connected in parallel to each other through a guide plate connected to the oil supply pipeline, and the control circuit board is communicatively connected to each distribution valve for controlling the distribution valve; the control cabinet is communicatively connected to the control circuit board.

7. The centralized lubrication intelligent control system according to claim 6 is characterized by: The valve body is provided with the oil inlet and oil outlet channels on both sides of the installation cavity, and the side wall of the valve core is provided with an annular recess for forming the oil outlet channel; the lower end of the screw is threadedly connected to the valve core, and the valve core is provided with a limit pin for preventing it from rotating with the screw; it also includes a detection ring and a first sensor for communication connection control circuit board, the upper end of the valve core extends to the outside of the valve body, and the detection ring is fixedly provided; the two first sensors are respectively arranged at both ends of the moving track of the detection ring.

8. A centralized lubrication intelligent control method, characterized in that: The centralized lubrication intelligent control method is implemented using a centralized lubrication intelligent control system as described in any one of claims 1 to 7.

9. A centralized lubrication intelligent control method according to claim 8, characterized in that: The opening time, filling time and grease pressure are pre-set for each lubrication point; the control cabinet conducts a round-robin inspection of the opening time of all lubrication points; when the opening time and grease pressure are met, the distribution valve of the corresponding intelligent distributor is opened; when the filling time is met, the distribution valve of the corresponding intelligent distributor is closed; When the lubrication point needs to be filled with grease, the control cabinet sends a command to start the pneumatic pump and each intelligent distributor, open the distribution valve corresponding to the lubrication point that needs to be filled with grease, and let the grease be delivered to the lubrication point through the pneumatic pump, oil supply pipeline, guide plate of the intelligent distributor, and distribution valve of the intelligent distributor; During the grease filling process, each pressure transmitter monitors the grease pressure in real time and transmits it to the corresponding intelligent distributor and control cabinet. The control cabinet adjusts the output pressure of the pneumatic proportional valve according to the preset grease pressure value. By adjusting the pneumatic proportional valve to change the output pressure, the current grease pressure of the intelligent distributor that needs to be oiled is adjusted to an appropriate number to avoid the current grease pressure of a certain intelligent distributor being too low and unable to supply oil and lubrication normally due to the distance of grease delivery or the influence of other intelligent distributors.

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