CN214222714U - Electric lubricating pump and lubricating device with same - Google Patents
Electric lubricating pump and lubricating device with same Download PDFInfo
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- CN214222714U CN214222714U CN202023141653.1U CN202023141653U CN214222714U CN 214222714 U CN214222714 U CN 214222714U CN 202023141653 U CN202023141653 U CN 202023141653U CN 214222714 U CN214222714 U CN 214222714U
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Abstract
The utility model relates to an electric lubricating pump, which comprises an oil tank; the oil pump is arranged in the oil tank; the motor is in driving connection with the oil pump; the differential pressure type automatic reversing valve is characterized in that an oil inlet is connected with an outlet of an oil pump, an oil return port is communicated with an oil tank, an oil outlet is connected with a main oil way joint, and the oil outlet forms a main oil port; the electromagnetic reversing valve is a two-position three-way reversing valve, an oil inlet of the electromagnetic reversing valve is connected with an oil outlet of the differential pressure type automatic reversing valve, an oil return port of the electromagnetic reversing valve is communicated with an oil tank, and an oil outlet of the electromagnetic reversing valve forms an auxiliary oil port. The electric lubricating pump can realize the pressure relief of the auxiliary oil way when the electromagnetic directional valve is electrified or not, and ensure the reliable unloading of the auxiliary oil way. The utility model discloses still relate to the lubricating arrangement who uses this electric lubricating pump, this lubricating arrangement control is simple, off-load reliable operation.
Description
Technical Field
The utility model relates to an electric lubricating pump still relates to the lubricating arrangement who uses this electric lubricating pump in addition.
Background
The pressure relief type electric lubricating pump is a lubricating equipment, and is matched with volumetric quantitative distributor to form electric fixed-point quantitative centralized lubricating device. Two necessary conditions for reliable work of the electric fixed-point quantitative centralized lubricating device are as follows: firstly, the quantitative distributor must have enough high working pressure when being filled with oil, otherwise, the quantitative distributor piston does not move in place, so that the oil separation is incomplete; when the pump is stopped, the pressure must be relieved, otherwise the restoring force of the return spring of the quantitative distributor is small, the piston of each quantitative distributor can not be driven to return, so that the quantitative oil storage is incomplete, and the quantitative distributor is not supplied with oil normally in the next oil supply period. The oil quantity required by each friction pair in the same equipment is more or less, and is determined by the area, load, relative movement speed, friction pair material, matching precision, form and position tolerance and the like of the friction pair. The electric fixed-point quantitative centralized lubricating device provides quantitative lubricants with different specifications according to the oil quantity required by each friction pair, so that the friction pair with large oil quantity can obtain the lubricant with large oil quantity each time, the friction pair with small oil quantity can obtain the lubricant with small oil quantity, and the 'demand distribution' close to the oil quantity required by each friction pair is realized. The friction pair with large oil demand has enough oil film, and the friction pair with small oil demand does not overflow too much oil to cause waste and environmental pollution. The oil filling periods of all lubricating points of a set of fixed-point quantitative centralized lubricating device are the same, when the oil requirements of all friction pairs of some equipment are too different, for example, the oil requirements of all friction pairs of a water-jet loom are different by dozens of times, the difference of the oil feeding gauge of a quantitative distributor cannot be met, and different lubricating periods are required to be adopted, namely, either two or more fixed-point quantitative centralized lubricating devices are arranged or a mode of feeding oil by the quantitative centralized lubricating devices in time intervals is adopted. Obviously, the cost is increased and the installation and maintenance are troublesome by arranging two or more fixed-point quantitative centralized lubricating devices.
In the time-interval oil feeding technology of the fixed-point quantitative centralized lubricating device, the prior art generally uses a structure as shown in figure 1, namely, one electric lubricating pump outputs in a single way, an external tee joint is divided into two ways, one way is transmitted to a main oil way, and the other way is transmitted to an auxiliary oil way after the on-off control of an electromagnetic directional valve. The technical structure specifically comprises an oil pump 100, an oil pump motor 200 for driving the oil pump 100 to work, and a differential pressure type reversing valve 300 connected with the oil pump 100, wherein an oil outlet of the differential pressure type reversing valve 300 is an output port of the oil pump, the differential pressure type reversing valve is externally connected with a tee 400, an oil way connected with one output port of the tee 400 is used as a main oil way, and an oil way connected with the other output port of the tee 400 through a two-position two-way electromagnetic reversing valve 500 is used as an auxiliary oil way. The on-off of the two-position two-way electromagnetic directional valve 500 is controlled to realize whether the auxiliary oil way supplies oil or not. Therefore, the oil supply period of the auxiliary oil way is any integral multiple of the main oil way, and the main oil way and the auxiliary oil way supply oil in different periods.
However, in the use process, when the oil pump motor is powered off, the two-position two-way electromagnetic directional valve 500 cannot be powered off immediately, otherwise, the communication between the auxiliary oil path and the differential pressure type directional valve 300 cannot be ensured, the unloading of the auxiliary oil path cannot be realized, and the two-position two-way electromagnetic directional valve 500 can be powered off only after the unloading of the auxiliary oil path is completed, so that the auxiliary oil path is closed. If the two-position two-way electromagnetic directional valve 500 is powered off immediately when the oil pump motor 200 is powered off, the auxiliary oil path is cut off, and unloading of the auxiliary oil path cannot be completed. In addition, when the two-position two-way electromagnetic directional valve 500 is controlled later than the power-off of the oil pump motor 200, a delay time is usually set, but due to the influence of the outside air temperature, the consistency of the lubricating grease becomes thick along with the reduction of the ambient temperature, the lubricating grease becomes thin along with the increase of the temperature, and the flow rate of the lubricating grease is related to the consistency. In other words, in order to ensure the sufficient unloading of the auxiliary oil path, the time for delaying the power-off of the electromagnetic directional valve should also change along with the change of the environmental temperature, for example, after the oil pump motor is powered off when the environmental temperature is higher in summer, the electromagnetic directional valve is powered off after delaying for 30 seconds, and the auxiliary oil path can complete the pressure relief; when the environmental temperature is low in winter, after the oil pump motor is powered off, the electromagnetic directional valve may delay for 300 seconds and then is powered off, otherwise, the auxiliary oil way is not sufficiently unloaded, and the piston of the quantitative distributor of the auxiliary oil way is not reset or is incompletely reset, so that the quantitative distributor of the auxiliary oil way in the next lubricating period is not subjected to oil distribution or the oil distribution amount is incomplete. In addition, because the two-position two-way directional valve 500 in this configuration requires a long energization time, its life is also affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the first technical problem that provides one kind can realize assisting the oil circuit release under the circumstances whether the circular telegram of solenoid directional valve is to above-mentioned prior art, guarantees to assist the electric lubricating pump of the reliable off-load of oil circuit.
The utility model discloses the second technical problem that will solve provides a lubricating arrangement who controls simply, off-load reliable operation to above-mentioned prior art.
The utility model provides a technical scheme that above-mentioned first technical problem adopted does: an electric lubricating pump comprises
An oil tank;
the oil pump is arranged in the oil tank;
the motor is in driving connection with the oil pump;
the differential pressure type automatic reversing valve is characterized in that an oil inlet is connected with an outlet of an oil pump, an oil return port is communicated with an oil tank, and an oil outlet forms a main oil port for connecting an external main oil path;
the method is characterized in that: also comprises
The electromagnetic reversing valve is a normally-detached two-position three-way reversing valve, an oil inlet of the electromagnetic reversing valve is connected with an oil outlet of the differential pressure type automatic reversing valve, an oil return port of the electromagnetic reversing valve is communicated with an oil tank, and an auxiliary oil port used for being connected with an external auxiliary oil way is formed in the oil outlet of the electromagnetic reversing valve.
In order to conveniently monitor the oil outlet pressure of the oil outlet of the differential pressure type automatic reversing valve, a pressure gauge is arranged on the main oil path connector.
In order to conveniently connect the main oil way and the auxiliary oil way, a main oil way joint is arranged on an oil outlet of the differential pressure type automatic reversing valve, and an auxiliary oil way joint is arranged on an oil outlet of the electromagnetic reversing valve.
And safely, an overflow valve is connected between the oil inlet and the oil return port of the differential pressure type automatic reversing valve.
Preferably, a filter screen is arranged at the inlet of the oil pump.
Conveniently installed, the matching covers has the mounting panel on the opening of oil tank, oil pump motor, electromagnetic drive part, the main oil circuit of electromagnetic directional valve connect, assist the oil circuit and connect the top that is located the mounting panel, and the valve body of oil pump, differential pressure formula automatic reversing valve, electromagnetic directional valve is located the below of mounting panel.
Preferably, the motor and the electromagnetic driving part of the electromagnetic directional valve are further provided with covers.
In order to conveniently refuel in the oil tank, the top of mounting panel still is provided with refuels the connector.
Conveniently installed, the below of mounting panel is connected with the link that extends to the bottom of oil tank, the oil pump is connected at the lower extreme of link, differential pressure formula automatic reversing valve is connected on the link.
In order to ensure that the oil return of the auxiliary oil way is smoother, the valve body of the electromagnetic directional valve is vertically arranged on the upper portion of the oil tank, a channel is axially arranged in the valve body of the electromagnetic directional valve in a penetrating mode, and the lower end of the channel forms an oil return port of the electromagnetic directional valve.
An oil inlet and an oil outlet of the electromagnetic directional valve are respectively arranged on the side wall of the valve body of the electromagnetic directional valve along the direction vertical to the axis of the channel, and the channel is communicated.
The utility model provides a technical scheme that above-mentioned second technical problem adopted does: a lubrication device, characterized by: the oil-way control device comprises the electric lubricating pump, a main oil way connected with an oil outlet of the differential pressure type automatic reversing valve and an auxiliary oil way connected with an oil outlet of the electromagnetic reversing valve; the main oil circuit is provided with a main quantitative oil separator and a first pressure switch, and the auxiliary oil circuit is provided with an auxiliary quantitative oil separator and a second pressure switch.
Compared with the prior art, the utility model has the advantages of:
the electric lubricating pump is integrated with a main oil way joint and an auxiliary oil way joint, so that the main oil way and the auxiliary oil way are simple in structure and installation, less in links, low in cost and convenient and visual to use and maintain;
the electromagnetic directional valve for controlling the on-off of the auxiliary oil path is arranged in the electric lubricating pump, the unloading port and the oil drainage port of the electromagnetic directional valve are communicated with the oil tank smoothly without obstruction, and reliable pressure relief of the auxiliary oil path can be realized when the electromagnetic directional valve is electrified or not after the pump is stopped.
By the connection mode of the differential pressure type automatic reversing valve and the electromagnetic reversing valve, the oil supply and the unloading of the main oil passage and the auxiliary oil passage can be effectively controlled by electrifying the motor and the electromagnetic reversing valve, and the unloading of the auxiliary oil passage can be finished no matter whether the electromagnetic reversing valve is electrified or not under the condition that the motor is powered off. The time delay and the time delay needed before the power failure of the electromagnetic reversing valve are avoided to be the best confusion, and the leakage oil of the electromagnetic reversing valve can be directly leaked back to the oil tank.
The oil way control method of the electric lubricating pump and the lubricating device applying the electric lubricating pump have the advantages that the oil supply and unloading control of the main and auxiliary oil ways is simpler and more reliable, and the realization of two necessary conditions for the reliable work of the quantitative distributor is effectively ensured. Thereby reducing the failure rate.
Drawings
Fig. 1 is a schematic diagram of a prior art time-phased oil supply scheme.
Fig. 2 is a schematic diagram of an electric lubrication pump according to an embodiment of the present invention.
Fig. 3 is a perspective view of the electric lubricating pump according to the embodiment of the present invention.
Fig. 4 is an exploded perspective view of an electric lubricating pump according to an embodiment of the present invention.
Fig. 5 is another perspective view of fig. 4.
Fig. 6 is a perspective view of a valve body of the electromagnetic directional valve in the embodiment of the present invention.
Fig. 7 is a schematic view of the time-sharing fixed-point quantitative lubricating device according to the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 2 to 5, the electric lubricating pump in the present embodiment includes an oil tank 1, an oil pump 2, a motor 3, a differential pressure type automatic directional valve 4, an electromagnetic directional valve 6, a main oil line joint 5, an auxiliary oil line joint 7, a pressure gauge 8, an overflow valve 40, and an oil filling connector 13.
The oil tank 1 is a tank body with an upward opening, and the volume of the tank body can be set according to specific requirements. The opening of the oil tank 1 is covered with a mounting plate 11 in a matching way, and the mounting plate 11 and the oil tank 1 can be fixedly connected through a fixing piece. The oil pump 2, the motor 3, the differential pressure type automatic reversing valve 4, the electromagnetic reversing valve 6, the main oil way joint 5 and the auxiliary oil way joint 7 are all arranged on the mounting plate 11.
Specifically, the motor 3, the electromagnetic driving portion of the electromagnetic directional valve 6, the main oil line joint 5, the auxiliary oil line joint 7, and the oiling connector 13 are all fixedly disposed on the upper surface of the mounting plate 11, and are further located above the mounting plate 11.
In order to ensure the use safety, the motor 3 and the electromagnetic driving part of the electromagnetic directional valve 6 are provided with a cover 12, and the cover 12 is fixedly connected on the mounting plate 11 and covers the motor 3 and the electromagnetic driving part of the electromagnetic directional valve 6. The cover 12 protects the motor 3 and the electromagnetic driving part of the electromagnetic directional valve 6 on one hand, and avoids potential safety hazards caused by contact of users on the other hand. For maintenance, the cover 12 includes a closed-loop side wall 121 and an upper cover 122 covering the side wall, the upper cover 122 is detachably connected to the side wall 121, and when maintenance is required, the upper cover 122 can be opened, thereby performing maintenance work on the motor 3 and the electromagnetic driving portion of the electromagnetic directional valve 6.
The main oil line joint 5, the auxiliary oil line joint 7 and the oiling joint 13 are positioned outside the cover cap 12 to be convenient for connecting an external oil pipe, and the specific arrangement positions of the main oil line joint 5, the auxiliary oil line joint 7 and the oiling joint 13 are specifically arranged by taking the connection convenience as a standard. The main oil way joint 5 is used for connecting a main oil way, and the auxiliary oil way joint 7 is used for connecting an auxiliary oil way. The oil filling connector 13 is used for connecting an oil filling pipe communicated with an oil source, and when oil is filled, the oil can enter the oil tank 1 through the oil filling connector 13.
The valve bodies of the oil pump 2, the differential pressure type automatic reversing valve 4 and the electromagnetic reversing valve 6 are positioned below the mounting plate 11.
Specifically, the oil pump 2 is usually disposed at the bottom of the oil tank 1 to pump out the grease in the oil tank 1, in this embodiment, a connecting frame 14 extending to the bottom of the oil tank 1 is connected below the mounting plate 11 corresponding to the mounting position of the motor 3, the oil pump 2 is connected to the lower end of the connecting frame 14, and the output shaft of the motor 3 is in driving connection with the oil pump 2 through a connecting shaft disposed along the extending direction of the connecting frame 14, so as to drive the oil pump 2 to work. Oil pump 2 in this embodiment adopts the gear pump, is equipped with filter screen 9 at the entrance cover of oil pump 2, and this filter screen 9 can filter the impurity in the lubricating oil in the oil tank 1, guarantees to get into the cleanliness of lubricating oil in the oil pump 2, and then better performance lubrication.
The differential pressure type automatic reversing valve 4 is connected to the connecting frame 14, in the embodiment, the differential pressure type automatic reversing valve 4 is arranged above the oil pump 2 and close to the oil pump 2, an oil inlet of the differential pressure type automatic reversing valve 4 is connected with an outlet of the oil pump 2, and for the sake of structural compactness, a connecting channel between the oil inlet of the differential pressure type automatic reversing valve 4 and the outlet of the oil pump 2 can be directly formed in the connecting frame 14. The oil return port of the differential pressure type automatic reversing valve 4 is directly opened, so that the differential pressure type automatic reversing valve can be communicated with the oil tank 1, namely, the oil unloaded from the oil return port of the differential pressure type automatic reversing valve 4 directly drops into the oil tank 1. The oil outlet of the differential pressure type automatic reversing valve 4 forms a main oil port for connecting an external main oil path. Specifically, the differential pressure type automatic direction changing valve 4 is connected to a main oil passage joint 5 through a first connecting pipe 41, and the main oil passage joint 5 forms a main oil port to which an external main oil passage is connected.
An overflow valve 40 is connected between the oil inlet and the oil return port of the differential pressure type automatic reversing valve 4, so that the output pressure of the electric lubricating pump can be set.
In order to monitor the output pressure of the oil outlet of the differential pressure type automatic reversing valve 4 in real time, a pressure gauge 8 is arranged on the main oil way joint 5, and the real-time oil pressure condition can be conveniently checked through the pressure gauge 8.
The electromagnetic directional valve 6 in this embodiment adopts a normally-detached two-position three-way directional valve, a valve body of the electromagnetic directional valve 6 is fixedly connected to the lower surface of the mounting plate 11 and is located on the upper portion of the oil tank 1, and the valve body in this embodiment is vertically arranged. As shown in fig. 6, a passage 61 is axially formed through the valve body of the electromagnetic directional valve 6, and a driving member of an electromagnetic driving portion of the electromagnetic directional valve 6 extends into the passage 61 of the valve body from an opening at an upper end of the passage 61 to cooperate with the electromagnetic directional valve 6 to perform an operation. The lower end of the channel 61 forms an oil return port of the electromagnetic directional valve 6, oil output from the oil return port of the electromagnetic directional valve 6 can naturally drop into the oil tank 1 under the action of gravity, and the communication relation between the oil return port of the electromagnetic directional valve 6 and the oil tank 1 is realized. The valve body structure of the electromagnetic directional valve 6 ensures the smoothness of oil return from the oil return port during unloading.
An oil inlet and an oil outlet of the electromagnetic directional valve 6 are respectively arranged on the side wall of the valve body of the electromagnetic directional valve 6 along the direction vertical to the axis of the channel 61 and communicated with the channel 61. An oil inlet of the electromagnetic directional valve 6 is connected with an oil outlet of the differential pressure type automatic directional valve 4 through a second connecting pipe 62, and an oil outlet of the electromagnetic directional valve 6 forms an auxiliary oil port for connecting an external auxiliary oil path. Specifically, in this embodiment, the electromagnetic directional valve 6 is connected to the auxiliary oil path joint 7 through a third connecting pipe 63, and the auxiliary oil path joint 7 forms an auxiliary oil port for connecting an external auxiliary oil path.
The oil way control method of the electric lubricating pump comprises the following steps: after the electric lubricating pump is started to work, when the motor 3 is electrified, the motor 3 drives the oil pump 2 to work, and then the oil pump 2 pumps out grease from the oil tank 1 and enters the differential pressure type automatic reversing valve 4 from an oil inlet of the differential pressure type automatic reversing valve 4. At this time, the differential pressure type automatic reversing valve 4 is operated by the pressure of the entering oil to conduct the oil inlet and the oil outlet, and the oil return port is in a closed state. Oil is output from an oil outlet of the differential pressure type automatic reversing valve 4 and then is supplied to a main oil way connected with a main oil way joint 5.
When the auxiliary oil way connected with the auxiliary oil way joint 7 needs to be supplied with oil, the electromagnetic directional valve 6 is electrified, after the electromagnetic directional valve 6 is electrified, the oil inlet of the electromagnetic directional valve 6 is communicated with the oil outlet, and the oil return port is in a closed state. Part of the oil output from the oil outlet of the differential pressure type automatic reversing valve 4 is shunted to the electromagnetic reversing valve 6, and then the oil is supplied to the auxiliary oil way through the oil outlet of the electromagnetic reversing valve 6. At the moment, the main oil way and each friction pair corresponding to the auxiliary oil way can perform lubricating work.
When unloading is needed, the motor 3 is powered off, the oil inlet of the differential pressure type automatic reversing valve 4 does not feed oil any more, the oil outlet and the oil return port of the differential pressure type automatic reversing valve 4 are communicated under the action of differential pressure, and the oil inlet is closed. At the moment, the oil in the main oil way flows back into the oil tank 1 through the oil outlet and the oil return port of the differential pressure type automatic reversing valve 4, and the automatic unloading of the main oil way is completed.
When the motor 3 is powered off, if the electromagnetic directional valve 6 is not powered off at the same time, the oil in the auxiliary oil way flows back into the oil tank 1 through the oil outlet and the oil inlet of the electromagnetic directional valve 6 and the oil outlet and the oil return port of the differential pressure type automatic directional valve 4, and then the unloading work of the auxiliary oil way is completed. When the motor 3 is powered off, if the electromagnetic directional valve 6 is powered off at the same time, the electromagnetic directional valve 6 resets to enable the oil outlet and the oil return port of the electromagnetic directional valve 6 to be communicated, the oil inlet of the electromagnetic directional valve 6 is in a closed state, and at the moment, oil in the auxiliary oil way flows back into the oil tank 1 through the oil outlet and the oil return port of the electromagnetic directional valve 6. Therefore, after the motor 3 is powered off, the electromagnetic directional valve 6 can unload the auxiliary oil way after being powered on or not. The oil supply and unloading of the main oil way and the auxiliary oil way can be completed by controlling the on-off of the motor 3 and the electromagnetic directional valve 6, and the control is simple and convenient.
According to the working process of the electric lubricating pump, the working condition contents corresponding to the oil passages under different power-on and power-off states of the motor 3 and the electromagnetic directional valve 6 shown in the following table can be obtained.
| Electric machine | Is electrified | Is electrified | Power off | Power off |
| Electromagnetic change valve | Power off | Is electrified | Is electrified | Power off |
| Main oil circuit | Oil supply output | Oil supply output | Relief valve | Relief valve |
| Auxiliary oil way | Relief valve | Oil supply output | Relief valve | Relief valve |
Therefore, the utility model provides an electric lubricating pump passes through differential pressure formula automatic reversing valve 4 and electromagnetic reversing valve 6's connected mode, can be through the fuel feeding and the off-load work to each oil circuit of break-make electricity effective control of motor 3, electromagnetic reversing valve 6 to under the condition of motor 3 outage, no matter whether electromagnetic reversing valve 6 circular telegram homoenergetic accomplishes the off-load to assisting the oil circuit, make the off-load of assisting the oil circuit more reliable.
The electric lubricating pump can be conveniently applied to mechanical equipment with different oil requirements of each friction pair and different lubricating periods, and can be met only by one electric lubricating pump. The installation, the use and the maintenance are convenient, the cost is saved, and the pipeline layout is simple and clear.
As shown in fig. 7, the lubricating device to which the electric lubricating pump is applied in the present embodiment includes the aforementioned electric lubricating pump, a main oil path 10 connected to the oil outlet of the differential pressure type automatic directional control valve 4, and an auxiliary oil path 20 connected to the oil outlet of the electromagnetic directional control valve 6. The main oil path 10 is provided with a main quantitative oil separator 101 and a first pressure switch 102, and the auxiliary oil path 20 is provided with an auxiliary quantitative oil separator 201 and a second pressure switch 202. The number of the main quantitative oil separators 101 on the main oil path 10 can be specifically set according to the requirement. The number of the auxiliary quantitative oil separators 201 on the auxiliary oil path 20 may also be specifically set as required.
The number of the auxiliary oil passages 20 can be determined according to several lubrication periods required by equipment lubrication, and if the equipment requires two lubrication periods, one auxiliary oil passage 20 can be arranged, and the auxiliary oil passage 20 and the main oil passage 10 can meet the requirements of the two lubrication periods. The number of the electromagnetic directional valves 6 in the electric lubricating pump is equal to the number of the required auxiliary oil passages 20, namely, one electromagnetic directional valve 6 and one auxiliary oil passage joint 7 are arranged corresponding to each auxiliary oil passage 20. And each auxiliary oil path 20 may be provided with a plurality of auxiliary quantity distributors 201 and second pressure switches 202.
Specifically, an oil inlet of the main quantitative oil separator 101 is connected with the main oil line joint 5 through a main oil inlet pipe 103 so as to be connected with an oil outlet of the differential pressure type automatic reversing valve 4, a main lubricating oil pipe 104 is connected to the oil outlet of the main quantitative oil separator, and a first pressure switch 102 is arranged on the main oil inlet pipe. Namely, a main oil inlet pipe 103, a main quantitative oil separator 101, a first pressure switch 102 and a main lubricating oil pipe 104 form a main oil path 10; an oil inlet of the auxiliary quantitative oil separator 201 is connected with the auxiliary oil way joint 7 through an auxiliary oil inlet pipe 203 so as to be connected with an oil outlet of the electromagnetic directional valve 6, an auxiliary lubricating oil pipe 204 is connected to the oil outlet of the auxiliary quantitative oil separator 201, and a second pressure switch 202 is arranged on the auxiliary oil inlet pipe. Namely, the auxiliary oil inlet pipe 203, the auxiliary quantitative oil separator 201, the second pressure switch 202 and the auxiliary lubricating oil pipe 204 form the auxiliary oil passage 20.
The utility model provides an inside can be integrated as required to set up one or more two tee bend solenoid directional valves 6 that often unload the type, correspondingly, the outside hydraulic fluid port that can form two or more than two lubricated oil circuits, each lubricated oil circuit's hydraulic fluid port all can independently supply with quantitative distributor and pressure switch and constitute each independent fixed point ration centralized lubrication device.
The oil line interfaces, the differential pressure type automatic reversing valve 4 and the electromagnetic reversing valve 6 are arranged relative to the oil tank 1 and the mounting plate 11, so that the contact points of all time-interval lubricating oil lines are arranged inside the electric lubricating pump, all oil return ports are also arranged inside the electric lubricating pump, and all independent quantitative lubricating oil lines are arranged outside the electric lubricating pump. The pipe distribution is simple, the installation is convenient and visual, and the use and maintenance are simple and clear.
When the auxiliary oil way works, except that the oil supply period of the main oil way is consistent with the power-on period of the oil pump motor, the oil supply periods of the other auxiliary oil ways can be set to be any integral multiple of the oil supply period of the main oil way. The oil quantity of the friction pair of the same mechanical equipment is greatly different, only one electric lubricating pump is used for supplying oil, and the aim close to proper lubrication can be achieved.
The two-position three-way electromagnetic directional valve 6 for controlling the oil supply period of each auxiliary oil way adopts a normally-unloaded type, namely, the electromagnetic directional valve 6 is in an unloading state when in a power-off state. The automatic unloading of each oil circuit after the pump is stopped is ensured to be smooth, if a certain auxiliary oil circuit needs to be lubricated, the power-on time of the corresponding electromagnetic directional valve 6 can be equal to the power-on time of an oil pump motor, namely, the electromagnetic directional valve 6 does not need to be powered on in a delayed mode, the control is simple, the service life of the electromagnetic directional valve 6 is prolonged, and the influence of the change of the ambient temperature in summer and winter is avoided.
The lubricating device of the electric lubricating pump is applied, oil supply and unloading control to each oil way is simpler, the reliability of unloading work is effectively ensured, and the failure rate is reduced.
Claims (9)
1. An electric lubricating pump comprises
An oil tank (1);
an oil pump (2) disposed in the oil tank (1);
the motor (3) is in driving connection with the oil pump (2);
the differential pressure type automatic reversing valve (4) is characterized in that an oil inlet is connected with an outlet of the oil pump (2), an oil return port is communicated with the oil tank (1), and an oil outlet forms a main oil port for connecting an external main oil path;
the method is characterized in that: also comprises
The electromagnetic directional valve (6) is a normally-detached two-position three-way directional valve, an oil inlet of the electromagnetic directional valve (6) is connected with an oil outlet of the differential pressure type automatic directional valve (4), an oil return port of the electromagnetic directional valve (6) is communicated with the oil tank (1), and an oil outlet of the electromagnetic directional valve (6) forms an auxiliary oil port for connecting an external auxiliary oil way.
2. The electric lubrication pump of claim 1, wherein: an overflow valve (40) is connected between an oil inlet and an oil return port of the differential pressure type automatic reversing valve (4).
3. The electric lubrication pump of claim 1, wherein: and a main oil way joint (5) is arranged on an oil outlet of the differential pressure type automatic reversing valve (4), and an auxiliary oil way joint (7) is arranged on an oil outlet of the electromagnetic reversing valve (6).
4. The electric lubrication pump of claim 2, wherein: an opening of the oil tank (1) is covered with a mounting plate (11) in a matching manner, and the oil pump (2), the motor (3), the differential pressure type automatic reversing valve (4), the electromagnetic reversing valve (6), the main oil way joint (5) and the auxiliary oil way joint (7) are all mounted on the mounting plate (11); the motor (3), the electromagnetic driving part of the electromagnetic directional valve (6), the main oil way joint (5) and the auxiliary oil way joint (7) are positioned above the mounting plate (11), and the valve bodies of the oil pump (2), the differential pressure type automatic directional valve (4) and the electromagnetic directional valve (6) are positioned below the mounting plate (11).
5. The electric lubrication pump of claim 4, wherein: and the motor (3) and the electromagnetic driving part of the electromagnetic directional valve (6) are also covered with a cover (12).
6. The electric lubrication pump of claim 4, wherein: an oiling connector (13) is further arranged above the mounting plate (11).
7. The electric lubrication pump of claim 4, wherein: the below of mounting panel (11) is connected with link (14) that extend to the bottom of oil tank (1), the lower extreme at link (14) is connected in oil pump (2), differential pressure formula automatic reversing valve (4) are connected on link (14).
8. The electric lubricating pump of any one of claims 1 to 7, characterized in that: the valve body of the electromagnetic directional valve (6) is vertically arranged at the upper part of the oil tank (1), a channel (61) is axially arranged on the valve body of the electromagnetic directional valve (6) in a penetrating manner, and the lower end of the channel (61) forms an oil return port of the electromagnetic directional valve (6);
an oil inlet and an oil outlet of the electromagnetic directional valve (6) are respectively arranged on the side wall of the valve body of the electromagnetic directional valve (6) along the direction vertical to the axis of the channel (61) and communicated with the channel (61).
9. A lubrication device, characterized by: the lubricating device comprises an electric lubricating pump as claimed in any one of claims 1 to 8, a main oil path (10) connected with an oil outlet of the differential pressure type automatic reversing valve (4), and an auxiliary oil path (20) connected with an oil outlet of the electromagnetic reversing valve (6); the main oil way (10) is provided with a main quantitative oil separator (101) and a first pressure switch (102), and the auxiliary oil way (20) is provided with an auxiliary quantitative oil separator (201) and a second pressure switch (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023141653.1U CN214222714U (en) | 2020-12-23 | 2020-12-23 | Electric lubricating pump and lubricating device with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023141653.1U CN214222714U (en) | 2020-12-23 | 2020-12-23 | Electric lubricating pump and lubricating device with same |
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| CN214222714U true CN214222714U (en) | 2021-09-17 |
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| CN202023141653.1U Active CN214222714U (en) | 2020-12-23 | 2020-12-23 | Electric lubricating pump and lubricating device with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202022103200U1 (en) | 2021-12-20 | 2022-06-21 | Shanghai Limada Machinery Co., Ltd | Electric lubrication pump |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202022103200U1 (en) | 2021-12-20 | 2022-06-21 | Shanghai Limada Machinery Co., Ltd | Electric lubrication pump |
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