CN220269100U - Intelligent double-line centralized lubrication system - Google Patents

Abstract

The utility model relates to a lubrication system, in particular to an intelligent double-wire centralized lubrication system, which comprises a control unit (1), an intelligent double-wire distributor (3) and an oil supply unit (2) for supplying oil to the intelligent double-wire distributor (3), wherein the intelligent double-wire distributor (3) comprises a wireless detection module (31) and a double-wire valve block (32), the wireless detection module (31) can detect the working state of the double-wire valve block (32), the control unit comprises a control cabinet (11) and a relay (12), the control cabinet (11) is used for controlling the oil supply of the oil supply unit (2), and the relay (12) is used for receiving a working signal fed back by the intelligent double-wire distributor (3) and transmitting the working signal to the control cabinet (11). The intelligent double-line centralized lubrication system can intelligently, efficiently and accurately detect the working state of the double-line distributor and the oil supply state of the lubrication points.

Description

Intelligent double-line centralized lubrication system

Technical Field

The utility model relates to a lubrication system, in particular to an intelligent double-wire centralized lubrication system.

Background

The double-wire centralized lubrication system is used as a lubrication system widely applied in the industrial field, and the existing double-wire centralized lubrication system comprises an electric lubrication pump, an electromagnetic reversing valve, a double-wire oil feeder, a dry oil filter, a differential pressure switch/pressure control valve, an electric control cabinet, two oil supply main pipelines and a plurality of oil supply branch pipelines. The lubricating pump outputs lubricating grease, and the grease is conveyed to the two-wire distributor through a main pipeline, and quantitatively distributed to each lubricating point through the two-wire distributor. The tail end of the main oil supply pipeline is provided with a differential pressure switch/pressure control valve, when the tail end pressure reaches a set value, a signal is sent to the electric control cabinet, the reversing valve reverses, lubricating grease output by the lubricating pump is conveyed to the double-line distributor through the other oil supply pipeline, and quantitatively distributed to each lubricating point through the double-line distributor. In the double-line centralized lubrication system, each lubrication point is in a grouping parallel connection relationship, so that the defect that one point in a single-line system is blocked and a plurality of points cannot be lubricated is overcome. However, when a lubrication point in the system is blocked, the fault is difficult to find in time, and the specific position of the fault is more difficult to find.

The working principle and the characteristics are as follows: the lubricating grease pumped from the lubrication pump can directly enter each distributor to push the piston to supply oil to the lubrication points, the back pressure is low, the lubrication points with small resistance are supplied with oil at first, and when one or more of the lubrication points are blocked, the system still continues to work, so that the blocked points are not easy to find. Alarming and monitoring characteristics: whether the dispenser supplies oil or not is determined by observing whether the movement instruction above the dispenser acts or not, so that the dispenser is inconvenient. The lubrication points are not easily found when they are blocked, thereby affecting the normal operation and continuous operation of the device.

In the double-wire centralized lubrication equipment, the double-wire distributor is used as an actuating mechanism for end grease distribution, in the prior art, a pressure oil piston of the distributor is added with a movement indication adjusting device, namely a movement indication rod, and whether the double-wire distributor works normally can be judged by observing the floating of the movement indication rod in the transparent cover body in an up-and-down movement mode, however, in the use process of an actual lubrication system, the working state of the movement indication rod is manually identified, so that the labor cost is consumed, and the manual observation result has a certain error.

Accordingly, there is a need to provide an intelligent two-wire centralized lubrication system that solves or overcomes the above-described technical difficulties.

Disclosure of Invention

In view of the above, the present utility model provides an intelligent two-wire centralized lubrication system, which can intelligently, efficiently and accurately detect the working state of the two-wire distributor and the oil supply state of the lubrication points.

In order to achieve the above purpose, the utility model provides a wireless detection sensor, which comprises a control unit, an intelligent double-wire distributor and an oil supply unit for supplying oil to the intelligent double-wire distributor, wherein the intelligent double-wire distributor comprises a wireless detection module and a double-wire valve block, the wireless detection module can detect the working state of the double-wire valve block, the control unit comprises a control cabinet and a relay, the control cabinet is used for controlling the oil supply of the oil supply unit, and the relay is used for receiving a working signal fed back by the intelligent double-wire distributor and transmitting the working signal to the control cabinet.

Preferably, the working signal includes an oil supply state signal, a temperature signal, a humidity signal and an electric quantity signal.

Preferably, the control cabinet comprises a power module, an input module, an output module, a communication module and a control module.

More preferably, the input module is connected with the control module for receiving external signals including an oil level signal and an oil pressure signal.

Specifically, the output module is connected with the control module and is used for converting a control signal of the control module so that the oil supply unit automatically starts oil supply, and the output module can also output an alarm signal.

Preferably, the communication module is connected with the control module, and the communication module is connected with the repeater, the display device and the upper system.

Preferably, the oil supply unit comprises an oil supplementing loop, the oil supplementing loop comprises an oil filling pump, an oil inlet of the oil filling pump is connected with an oil filling tank, an oil outlet of the oil filling pump is connected with an oil supplementing oil path, and the oil filling pump is electrically connected with the control cabinet.

Still preferably, the oil supply unit further comprises an oil supply loop, the oil supply loop comprises an oil tank, the oil tank is connected with an oil inlet path, an oil return path and a lubricating pump, the oil inlet path is connected with the oil supplementing path, the lubricating pump is connected with a working path, and the lubricating pump is electrically connected with the control cabinet.

Preferably, the oil supply unit further comprises a reversing valve, the reversing valve is connected to the oil return oil path, the working oil path, a first oil supplementing path and a second oil supplementing path, the reversing valve is electrically connected with the control cabinet, and the reversing valve has a first working state and a second working state, wherein in the first working state, the reversing valve is switched to enable the oil return oil path to be communicated with the first oil supplementing path, and the working oil path is communicated with the second oil supplementing path; and in the second working state, the reversing valve is switched to enable the oil return oil way to be communicated with the second oil supplementing oil way, and the working oil way is communicated with the first oil supplementing oil way.

Preferably, the first grease supplementing oil way is connected with a first working oil port of the intelligent double-wire distributor, the second grease supplementing oil way is connected with a second working oil port of the intelligent double-wire distributor, the first grease supplementing oil way and the second grease supplementing oil way are both connected with a pressure controller, and the pressure controller is electrically connected with the control cabinet.

Compared with the prior art, the intelligent double-wire centralized lubrication system has the following beneficial effects:

(1) The intelligent double-line distributor comprises a wireless detection module and a double-line valve block, wherein the wireless detection module can detect the working state of the double-line valve block and wirelessly transmit the working state of the double-line valve block to the control unit, so that the working state of the double-line valve block can be effectively known through the control unit, when a lubricating point is blocked, the control unit can know the position of the blocking point through the working state of the double-line valve block, and thus the blocking condition can be timely processed, and the normal operation and continuous operation of equipment are ensured;

(2) The control unit can control the start and stop of the oil filling pump and the lubricating pump, and can control the reversing valve to automatically switch the oil way through the pressure signal fed back by the pressure controller, so that the automatic oil supply to the lubricating point is realized;

(3) The control unit can be connected with the display device and the upper system through the communication module, so that a user can directly and intuitively know the blocking condition of the lubrication point through the display screen, and the lubrication operation condition of equipment can be remotely monitored through the upper system.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate and together with the description serve to explain, but do not limit the utility model. In the drawings:

FIG. 1 is a schematic diagram of a smart two-wire centralized lubrication system in an embodiment of the present utility model;

FIG. 2 is a wire-frame schematic of a control unit in an embodiment of the utility model;

fig. 3 is a schematic structural view of the intelligent two-wire dispenser in the embodiment of the present utility model.

Description of the reference numerals

1 control unit 11 control cabinet

12 repeater 2 oil supply unit

21 oil supplementing circuit 211 oil filling pump

212 oil tank 22 oil supply circuit

221 oil tank 222 lubrication pump

23 reversing valve 24 pressure controller

3 intelligent double-wire distributor 31 wireless detection module

32 double-line valve block 33 double-line valve block integrated seat

L1 oil supplementing oil way L2 oil inlet oil way

L3 working oil way L4 oil return oil way

L5 first grease supplementing oil path L6 second grease supplementing oil path

A a first working oil port B a second working oil port

Detailed Description

The following detailed description of the embodiments of the utility model is provided in connection with the accompanying drawings, it being understood that the embodiments described herein are for purposes of illustration and explanation only, and the scope of the utility model is not limited to the following embodiments.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly via an intermediate medium, or in communication with each other or in interaction with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be understood that the terminology of orientation is based on the orientation or positional relationship shown in the accompanying drawings, which is for the purpose of describing the present utility model only and simplifying the description, and is not intended to indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and thus, features defining "first," "second," or the like, may explicitly or implicitly include one or more of such features.

It should be noted that, for simplicity and clarity of the following description, the intelligent two-wire centralized lubrication system is expressed as a lubrication system.

Referring to fig. 1, the utility model provides an intelligent two-wire centralized lubrication system, which comprises a control unit 1, an intelligent two-wire distributor 3 and an oil supply unit 2 for supplying oil to the intelligent two-wire distributor 3, wherein the intelligent two-wire distributor 3 comprises a wireless detection module 31 and a two-wire valve block 32, the wireless detection module 31 can detect the working state of the two-wire valve block 32, the control unit comprises a control cabinet 11 and a relay 12, the control cabinet 11 is used for controlling the oil supply of the oil supply unit 2, and the relay 12 is used for receiving the working signal fed back by the intelligent two-wire distributor 3 and transmitting the working signal to the control cabinet 11.

Specifically, referring to fig. 3, the intelligent two-wire dispenser 3 in this embodiment includes a two-wire valve block integrated seat 33, the top surface of the two-wire valve block integrated seat 33 is provided with a wireless detection module 31 and a plurality of two-wire valve blocks 32, the vertical end surfaces of the two-wire valve blocks 32 are attached to the detection surfaces of the wireless detection module 31, and sensing elements matched with the wireless detection module 31 are mounted on the pressure oil pistons in the two-wire valve blocks, the sensing elements are preferably magnetic elements, and the wireless detection module 31 can determine the working positions of the pressure oil pistons by detecting the approaching positions of the sensing elements, so that the working states of the two-wire valve blocks 32 are further judged. The inside of the double-line valve block integrated seat 33 is also provided with an oil path which is communicated with the oil path of the double-line valve block 32, and the double-line valve block integrated seat 33 and the double-line valve block 32 are also communicated with the oil supplementing oil path of the oil supply unit 2, so that oil can be supplied to equipment needing lubrication, and the defect of insufficient lubrication caused by unsmooth oil supply in the use process of the equipment is avoided. In the present embodiment, four two-wire valve blocks 32 are mounted on the top surface of the two-wire valve block integration seat 33, however, in actual use, the configuration can be performed according to the lubrication points required by the apparatus, and the number of the two-wire valve blocks 32 is not limited to the present embodiment.

The control unit 1 in this embodiment includes a control cabinet 11 and a repeater 12, where the repeater 12 is electrically connected to the control cabinet 11, and the wireless detection module 31 is further provided with a radio frequency antenna board, where the radio frequency antenna board can wirelessly transmit the working state of the double-wire valve block after detection processing by the detection board and the working signal of the wireless detection module 31 to the repeater 12, where the repeater 12 transmits the received signal to the control cabinet 11, where the control cabinet 11 transmits the processed signal to a display screen or an upper system through an internal communication module, and a user can remotely know the working state of the double-wire valve block 32 according to the display screen or the upper system, and determine whether a device lubrication point has a blockage condition according to the working state of each double-wire valve block 32, so as to timely process the blocked lubrication point, thereby ensuring continuous operation of the device. The control cabinet 11 is further electrically connected with the oil filling pump 211, the lubricating pump 222, the reversing valve 23 and the pressure controller 24 of the oil supply unit 2, when the equipment connected with the intelligent double-wire distributor 3 sends out a lubricating demand signal to the control cabinet 1, the control cabinet 1 controls the lubricating pump 222 to be started so as to convey grease to a pipeline connected with the intelligent double-wire distributor 3, when the pressure controller 24 arranged on the pipeline detects that the pressure in the pipeline reaches the set pressure upper limit, the signal is fed back to the control cabinet 11, and the control cabinet 11 controls the reversing valve 23 to reverse according to the feedback signal, so that the grease pumped subsequently is conveyed to another pipeline connected with the intelligent double-wire distributor 3, and the intelligent double-wire distributor 3 is continuously conveyed to the equipment connected with the intelligent double-wire distributor 3 so as to finish lubrication. In addition, when the oil amount of the oil tank 221 connected to the lubrication pump 222 is insufficient, the control cabinet 11 controls the oil feed pump 211 to feed oil to the oil tank 221 according to the oil level signal fed back by the level sensor provided in the oil tank 221.

According to the technical scheme, the intelligent double-line centralized lubrication system can automatically convey grease to and lubricate equipment according to feedback of signals in the system, and the application of the intelligent double-line distributor enables a user to remotely monitor oil supply conditions of lubrication points of the equipment in real time, discover blocking conditions of the lubrication points in time, and avoid errors and labor cost caused by manual observation. The technical solution of the present utility model will be further described with reference to fig. 1 and 2.

In this embodiment, the working signal includes an oil supply state signal, a temperature signal, a humidity signal, and an electric quantity signal. The radio frequency antenna board in the wireless detection module 31 integrates a wireless antenna and an NFC antenna, so that the wireless detection module 31 is in communication connection with the repeater 12, wireless connection with the wireless detection module 31 can be realized through mobile phone Bluetooth or a small program, detection parameters of the wireless detection module 31 can be remotely modified, the radio frequency antenna board 3 is electrically connected with a battery, a battery electric quantity detection module is further arranged in the radio frequency antenna board 3, electric quantity of the battery 4 can be remotely checked, and the radio frequency antenna board 3 is further provided with a temperature and humidity detection module, so that a user can remotely check the change condition of humidity and temperature in the sensor.

In this embodiment, the control cabinet 11 includes a power module, an input module, an output module, a communication module, and a control module. It should be noted that, the control software related to the embodiment of the present utility model adopts the prior art.

In this embodiment, the input module is connected to the control module, and is configured to receive an external signal, where the external signal includes an oil level signal and an oil pressure signal. Specifically, the oil level signal is fed back to the input module by the liquid level sensor installed in the oil tank 221, and when the oil in the oil tank 221 is lower than the lowest value of the oil, the control module outputs an alarm signal (such as an alarm indicator lamp) through the output module, or transmits the alarm signal to the display screen or the upper system through the communication module, so that a user is reminded of timely adding the lubricating oil.

In this embodiment, the output module is connected to the control module, and is configured to convert a control signal of the control module so that the oil supply unit 2 automatically starts oil supply, and the output module may also output an alarm signal. Specifically, the output module inputs the pulse signals set by the system into the motor drivers of the lubrication pump 222 and the oil feed pump 211, so that the motors operate with the set pulse amounts, thereby driving the operation of the lubrication pump 222 and the oil feed pump 211. Each alarm signal in the lubrication system, such as an oil tank 221 liquid level alarm signal, a blockage alarm signal of the lubrication point where the intelligent double-wire distributor 3 is positioned, and the like, is output to an alarm lamp or a buzzer by an output module so as to remind a worker of timely processing.

In this embodiment, the communication module is connected to the control module, and the communication module is connected to the repeater 12, the display device, and the host system. Specifically, the repeater 12 receives the working signal fed back by the intelligent two-wire distributor 3 wirelessly, and transmits the working signal to the communication module, the control module processes the working signal, for example, the working signal is used as a judging condition of a lubrication point blockage alarm signal, and the like, and then the working signal is transmitted to the display screen or the upper system through the communication module, so that a worker can remotely and clearly know whether each lubrication point in the lubrication system has a blockage condition, if the lubrication point has the blockage condition, alarm information can be displayed in the display screen or the upper system, and the worker can timely inform the on-site worker of processing when the alarm information is found in the monitoring process.

Preferably, the oil supply unit 2 includes an oil supply circuit 21, the oil supply circuit 21 includes an oil filling pump 211, an oil inlet of the oil filling pump 211 is connected to an oil filling tank 212, an oil outlet is connected to an oil supply line L1, and the oil filling pump 211 is electrically connected to the control cabinet 11. Specifically, when the liquid level sensor in the oil tank 221 senses that the oil in the oil tank is insufficient and reaches the lowest oil level preset by the control unit 1, the control unit 1 drives the motor connected with the oil filling pump 211 to operate, so that the oil filling pump 211 is driven to start pumping oil, and the oil tank 221 in the oil supply loop 22 is replenished with oil through the oil replenishing oil path L1, so that the condition that the oil is insufficient is avoided, and the lubricating system is difficult to input lubricating grease into equipment connected with the intelligent double-wire distributor 3, so that the condition of insufficient lubrication is caused. And still be equipped with fluid filter equipment and check valve on the oil circuit L1 that mends, fluid filter equipment can reduce the impurity content in the lubricating grease, and the check valve can avoid oil tank 221 fluid to spill over and flow back to the oil circuit L1 that mends through advance oil circuit L2.

Further preferably, the oil supply unit 2 further includes an oil supply circuit 22, the oil supply circuit 22 includes an oil tank 221, the oil tank 221 is connected with an oil inlet path L2, an oil return path L4, and a lubrication pump 222, the oil inlet path L2 is connected to the oil supply path L1, the lubrication pump 222 is connected to the working path L3, and the lubrication pump 222 is electrically connected to the control cabinet 11. Specifically, the lubricating grease conveyed by the oil supplementing oil path L1 is input into the oil tank 221 through the oil inlet oil path L2, when the equipment is required to be lubricated, the control unit 1 controls the motor connected with the lubricating pump 222 to start to operate, so that the lubricating pump 222 is driven to start pumping oil, the lubricating grease is conveyed onto the working oil path L3, an overflow valve is further arranged between the working oil path L3 and the oil return oil path L4, and when the oil pressure on the working oil path L3 is overlarge, the lubricating grease on the working oil path L3 can flow back into the oil tank 221 through the oil return oil path L4 through the overflow valve, so that damage to the pipeline caused by overlarge oil pressure is avoided. An oil filtering device is further arranged on the working oil path L3 before the overflow valve, so that the lubricating grease in the oil tank 221 is filtered for the second time, and a pressure gauge, a one-way valve and a maintenance valve are arranged on the working oil path L3 after the overflow valve. The pressure gauge is convenient for the staff observe the fluid pressure on the working oil circuit L3, and the check valve can avoid lubricating grease in the reversing valve 23 to flow back to on the working oil circuit L3, still is equipped with the maintenance valve on the oil return oil circuit L4, and the maintenance valve is convenient for the staff to overhaul lubricating system.

Preferably, the oil supply unit 2 further includes a reversing valve 23, the reversing valve 23 is connected to the oil return path L4, the working path L3, the first oil-supplementing path L5, and the second oil-supplementing path L6, the reversing valve 23 is electrically connected to the control cabinet 11, and the reversing valve 23 has a first working state and a second working state, where in the first working state, the reversing valve 23 is switched such that the oil return path L4 is communicated with the first oil-supplementing path L5, and the working path L3 is communicated with the second oil-supplementing path L6; and in the second working state, the reversing valve 23 is switched to enable the oil return oil path L4 to be communicated with the second oil supplementing path L6, and the working oil path L3 is communicated with the first oil supplementing path L5. The first grease supplementing oil path L5 is connected with a first working oil port A of the intelligent double-wire distributor 3, and the second grease supplementing oil path L6 is connected with a second working oil port B of the intelligent double-wire distributor 3. And the first oil supplementing path L5 and the second oil supplementing path L6 are both connected with a pressure controller 24, and the pressure controller 24 is electrically connected with the control cabinet 11.

Specifically, the reversing valve 23 in this embodiment is an electrically controlled reversing valve, and is connected to the control unit 1, when the reversing valve 23 is in the first working state, lubricating grease is delivered to the second working port B of the intelligent dual-line distributor 3 through the second grease supplementing oil path L6, return oil flows out from the first working port a to the first grease supplementing oil path L5, then flows into the return oil path L4 through the reversing valve 23, when the pressure controller 24 on the second grease supplementing oil path L6 detects that the pipeline pressure reaches the set pressure upper limit, the pressure controller 24 feeds back the pressure signal to the control unit 1, after the control unit 1 receives the pressure signal, the reversing valve 23 is controlled to switch to the second working state, then the lubricating grease is delivered to the first working port a of the intelligent dual-line distributor 3 through the first grease supplementing oil path L5, the return oil flows into the oil path L4 through the reversing valve 23 after the return oil is reserved from the second working port B to the second grease supplementing oil path L6, when the pressure controller 24 on the first grease supplementing oil path L5 detects that the pipeline pressure reaches the set pressure upper limit, the pressure controller 24 on the first grease supplementing oil path L6 reaches the set pressure upper limit, and then the pressure controller 24 is switched to the intelligent dual-line distributor 3, and the lubricating grease is continuously delivered to the intelligent dual-line distributor 3 after the pressure signal is switched to the intelligent dual-line distributor 3.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims (10)

1. The utility model provides an intelligent double-line centralized lubrication system, its characterized in that includes control unit (1), intelligent double-line distributor (3) and is used for giving oil feeding unit (2) of intelligent double-line distributor (3), intelligent double-line distributor (3) include wireless detection module (31) and double-line valve piece (32), wireless detection module (31) can detect the operating condition of double-line valve piece (32), control unit (1) include switch board (11) and repeater (12), switch board (11) are used for controlling oil feeding unit (2) supply oil, repeater (12) are used for receiving the working signal of intelligent double-line distributor (3) feedback, and with it is transmitted to switch board (11).

2. The intelligent two-wire centralized lubrication system of claim 1, wherein the operating signals include an oil supply status signal, a temperature signal, a humidity signal, and an electrical quantity signal.

3. The intelligent two-wire centralized lubrication system of claim 1, wherein the control cabinet (11) comprises a power module, an input module, an output module, a communication module, and a control module.

4. The intelligent two-wire centralized lubrication system of claim 3, wherein the input module is coupled to the control module for receiving external signals including an oil level signal and an oil pressure signal.

5. The intelligent two-wire centralized lubrication system according to claim 4, wherein the output module is connected with the control module, and is configured to convert a control signal of the control module so that the oil supply unit (2) automatically starts oil supply, and the output module may further output an alarm signal.

6. The intelligent two-wire centralized lubrication system according to claim 5, wherein the communication module is connected to the control module and the communication module is connected to the repeater (12), display device and host system.

7. The intelligent double-line centralized lubrication system according to claim 1, characterized in that the oil supply unit (2) comprises an oil supplementing circuit (21), the oil supplementing circuit (21) comprises an oil filling pump (211), an oil inlet of the oil filling pump (211) is connected with an oil filling tank (212), an oil outlet is connected with an oil supplementing oil line (L1), and the oil filling pump (211) is electrically connected with the control cabinet (11).

8. The intelligent double-line centralized lubrication system according to claim 7, wherein the oil supply unit (2) further comprises an oil supply circuit (22), the oil supply circuit (22) comprises an oil tank (221), the oil tank (221) is connected with an oil inlet circuit (L2), an oil return circuit (L4) and a lubrication pump (222), the oil inlet circuit (L2) is connected with the oil supplementing circuit (L1), the lubrication pump (222) is connected with a working circuit (L3), and the lubrication pump (222) is electrically connected with the control cabinet (11).

9. The intelligent double-line centralized lubrication system according to claim 8, wherein the oil supply unit (2) further comprises a reversing valve (23), the reversing valve (23) is connected to the oil return line (L4), the working line (L3), a first oil supplementing line (L5) and a second oil supplementing line (L6), the reversing valve (23) is electrically connected to the control cabinet (11), and the reversing valve (23) has a first working state and a second working state, wherein in the first working state the reversing valve (23) is switched such that the oil return line (L4) is in communication with the first oil supplementing line (L5), and the working line (L3) is in communication with the second oil supplementing line (L6); and in the second working state, the reversing valve (23) is switched to enable the oil return oil way (L4) to be communicated with the second oil supplementing oil way (L6), and the working oil way (L3) is communicated with the first oil supplementing oil way (L5).

10. The intelligent two-wire centralized lubrication system according to claim 9, wherein the first grease supplementing oil path (L5) is connected with a first working oil port of the intelligent two-wire distributor (3), the second grease supplementing oil path (L6) is connected with a second working oil port of the intelligent two-wire distributor (3), and the first grease supplementing oil path (L5) and the second grease supplementing oil path (L6) are both connected with a pressure controller (24), and the pressure controller (24) is electrically connected with the control cabinet (11).