JPH0417900Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a spray oil feeder that sprays and mixes lubricating oil into compressed air flowing through a flow path.

[Prior Art] Conventionally, this type of atomizing oil feeder has a constriction part that speeds up the flow of compressed air in the middle of a flow path through which compressed air flows, and a discharge passage that discharges and sprays lubricating oil into this constriction part. It is provided with an oil storage tank that is opened and stores lubricating oil at a position below the position of the throttle part,
The inside of the oil storage tank is communicated with the flow path after the constriction part, and the stored lubricating oil is sent out under pressure to the discharge path, so that the lubricating oil can be mixed with the compressed air by spraying.

[Problem that the invention attempts to solve]

By the way, in such a configuration, when the oil storage tank is opened to the atmosphere for lubricating while compressed air is flowing through the flow path, the pressure of the compressed air in the oil storage tank causes the stored lubricating oil to be sent to the discharge path. When lubricating, stop the operation of the spray lubricant or use a pressurizing device to apply lubricating oil at high pressure. There was a problem that needed to be addressed.

The present invention solves this problem by making it possible to perform lubricating oil well in an operating state with compressed air flowing through the flow path without requiring any special oiling pressurizing means. The purpose of the present invention is to provide a spray lubrication device.

[Means for solving problems]

For this reason, the present invention forms a flow path in a fuel supply device body having a compressed air inlet and an outlet, which communicates between the inlet and outlet, and has a constriction part in the middle that acts to speed up the flow of compressed air. A discharge path is provided that opens at the constriction part of the flow path so that the lubricating oil can be discharged and sprayed into the compressed air, and the stored lubricant is applied to the compressed air in the flow path after the constriction part at a position below the constriction part. A small-capacity secondary tank that can be pressurized and sprayed from the discharge passage, and a large-capacity primary tank that has an oil filler port that can be opened and closed with a plug member are arranged vertically, and a constriction part is connected to the primary tank. A communication path is provided to guide compressed air from the rear flow path, and an intermediate tank for storing lubricating oil to be sent to the secondary tank is defined in the primary tank by communicating with the rear flow path of the constriction part to form a section. In addition to providing communication passages that lead lubricating oil from the primary tank to the tank, oil fill ports are opened in each communication passage using plug members, so that when the pressure in the primary tank decreases, compressed air flowing through the flow passage passes through each communication passage. In order to prevent the lubricating oil from flowing out from the oil filler port, a valve is arranged to close the lubricating oil, and the intermediate tank has an air supply passage whose one end communicates with the flow passage in front of the constriction part so that the lubricating oil stored in the intermediate tank can be sent upward to the secondary tank. An oil feed passage whose one end communicates with the secondary tank is opened into the stored lubricating oil.

[Effect]

In the configuration of the present invention, normally, when compressed air flows from the inlet into the flow path, the lubricating oil stored in the primary tank is pressurized by the compressed air in the flow path after the constriction part, and is sent to the intermediate tank. The lubricating oil stored in the tank is sent upward to the secondary tank via the oil supply path by the action of the compressed air in the flow path before the constriction part flowing through the air supply path, and the lubricant oil stored in the secondary tank is pumped up into the flow path after the constriction part. Due to the pressurizing action of the compressed air, the atomized material is discharged from the discharge passage and mixed into the compressed air flowing through the constriction section. In this operating state, when the lubricating oil stored in the primary tank is below the minimum allowable level and lubricating oil is added,
When the oil filler port is opened using the plug member, the inside of the primary tank is opened to the atmosphere and the pressure drops to atmospheric pressure. Since the valve is closed, the compressed air flowing through the flow path is prevented from flowing out from the oil filler port through these communication paths, and the lubricating oil is filled while the primary tank is brought into an atmospheric condition.
The lubricating oil stored in the intermediate tank is discharged and sprayed from the discharge passage via the oil supply passage and the secondary tank, and continues to be sprayed and mixed with the compressed air. Therefore, it is possible to easily fill the primary tank with lubricating oil while in operation with compressed air flowing through the flow path.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In Figures 1 to 4, reference numeral 1 indicates the main body of the oil supply device, and inlet 2 connects to the compressed air pressure source side.
and an outflow port 3 connected to the pneumatic actuator side, and internally provided with flow passages 4 and 5 connected to the inflow port 2 and the outflow port 3, respectively, and open to the lower surface. Reference numeral 6 denotes a tank member integrally fixed to the lower surface of the oil dispenser main body 1, and the side surface of the portion where the channels 4 and 5 are opened is recessed to form a space 7 with the oil dispenser main body 1;
The flow paths 4 and 5 communicate with each other through this space 7 to form a compressed air flow path, and a small-capacity secondary tank 8 for storing lubricating oil is provided at the bottom of the space 7, that is, the tank member 6. is forming. Reference numeral 9 denotes a throttle member disposed in the flow path 4 of the oil supply main body 1, and the flow path 1 has a throttle hole 11 therein as a throttle portion that communicates with the flow path 4 and acts to speed up the flow of compressed air.
0 is formed through the hole. Reference numeral 12 denotes a lubricating oil discharging member disposed above the throttle member 9, and a discharge passage 13 is provided inside the lubricating oil discharging member which opens into the throttle hole 11 and is capable of discharging and spraying lubricating oil into the compressed air. 14 is the oil supply main body 1
It is a rod-shaped plug member screwed and fixed to the lower opening of the flow path 4, and has a communication hole 15 inside that communicates between the flow path 10 of the throttle member 9 and the space 7 to form a communication flow path between the inlet and the outlet. It is set up. 16 has one end connected to the discharge path 13
The oil passage 18 is a needle valve that adjusts the amount of lubricating oil flowing through the oil passage 16, and the other end communicates with the oil dripping chamber 17 which is opened and the secondary tank 8 at the other end. Reference numeral 19 denotes a primary tank for storing a large capacity of lubricating oil, and a hollow cylindrical member 20 is interposed on the lower surface of the tank member 6, and a lid member 21 is fixed by a fastening member 22 so as to close the lower opening of the cylindrical member 20. It is formed by letting. 23
is divided into the primary tank 19 and the secondary tank 8
This is an intermediate tank that stores lubricating oil to be sent to the tank member 6 and the lid member 21.
It is formed by sealing and narrowing between the intermediate tank 2
3 is provided in a communication hole provided at the bottom of the recess of the tank member 6 so as to communicate with the space 7. Reference numeral 25 designates a check valve, which is a flow path 2 that is a communication path for guiding lubricating oil from the primary tank 19 to the intermediate tank 23 provided on the lid member 21 so as to communicate between the primary tank 19 and the intermediate tank 23.
The on-off valve body 27 is arranged in the primary tank 19 and is formed into a spherical shape from a selected synthetic resin having a specific gravity slightly larger than that of the stored lubricating oil.
The opening/closing valve body 27 is seated on the valve seat 28 in response to the flow of lubricating oil in the flow path 26 due to a drop in the internal pressure of the lubricating oil, and is closed, automatically allowing the lubricating oil to flow from the intermediate tank 23 to the primary tank 19. It is designed to prevent it.
Reference numeral 29 denotes an air supply passage whose one end communicates with the flow passage 4 in front of the throttle hole 11 and whose other end opens into the lubricating oil stored in the intermediate tank 23. Reference numeral 30 denotes the effect of the compressed air flowing out from the air supply passage 29 into the intermediate tank 23. One end is fixed to the plug member 14, and the other end is connected to the space 7 above the secondary tank 8, and the other end is connected to the other end of the air supply path 29 with a gap, so that the stored lubricating oil can be upwardly sent to the secondary tank 8. This is an oil supply passage fitted externally so as to have a Reference numeral 31 denotes a plug member which is removably screwed into an oil filling port 32 provided at the upper part of the primary tank 19, and constitutes lubricating oil filling means. Reference numeral 33 designates a check valve provided in the flow path after the throttle hole 11 to the primary tank 19, that is, in the communication path for guiding compressed air from the space 7. When the plug member 31 is fixed to the oil filling port 32, the outer peripheral surface of the plug member 31 presses the valve in the axial direction. When the stopper member 31 is removed from the oil filling port 32, the stopper member 31 is closed by a spring 34.

Next, the operation of this configuration will be explained.

In the state shown in FIGS. 1 to 4 in which the oil filler port 32 of the primary tank 19 is closed, the compressed air flowing into the inlet 2 flows through the flow path 10 of the throttle member 9 and the plug member 14 through the flow path 4. It flows out to the outlet 3 through the hole 15, the space 7 and the flow channel 5. and,
When this compressed air flows through the flow passage 10 of the throttle member 9, the flow is accelerated by the throttle hole 11 and the discharge passage 13
While creating a negative pressure state near the opening of the throttle hole 11,
A part of the front flow path flows into the air supply path 29, and a part of the front flow path flows into the air supply path 29.
A portion of the first flow path pressurizes the lubricating oil stored in the secondary tank 8 , and flows through the space 7 and check valve 33 to pressurize the lubricating oil stored in the primary tank 19 . The lubricating oil stored in the primary tank 19 flows through the check valve 25 whose on-off valve body 27 is always kept open due to its own weight, and through the flow path 26 and is stored in the intermediate tank 23 . The lubricating oil stored in the intermediate tank 23 is sent upward through the oil feed path 30 by the action of compressed air flowing through the air feed path 29 and stored in the secondary tank 8 . The lubricating oil stored in the secondary tank 8 flows through the oil passage 16 and the oil dripping chamber 17 and is discharged from the discharge passage 13 due to the pressurizing action of the compressed air and the suction action due to the negative pressure generated when the compressed air flows through the throttle hole 11. It is atomized and mixed into compressed air. When the compressed air flows through the throttle hole 11 and the distribution hole 15 and flows out into the space 7, the oil droplets of the spray-mixed lubricating oil fall into the secondary tank 8 as the flow rate of the compressed air decreases and become fine particles. Only the grains flow through the channel 5 and reach the outlet 5.
More leakage.

During this operation, when the lubricating oil stored in the primary tank 19 becomes less than the minimum allowable amount and the plug member 31 is removed from the oil filler port 32 in order to supply lubricating oil, the check valve 33 automatically closes and 19, the internal pressure decreases, and due to this internal pressure decrease, the lubricating oil in the flow path 26 flows slightly toward the primary tank 19, so that the check valve 25 is opened and closed as shown in FIG. In response, the lubricating oil is moved to the valve seat 28 and closed, thereby blocking the flow of lubricating oil from the intermediate tank 23 to the primary tank 19. And intermediate tank 2
The lubricating oil stored in the lubricating oil 3 and the secondary tank 8 continues to be atomized and mixed with the compressed air by being subjected to flow action, respectively, as described above. When the primary tank 19 is completely filled with lubricating oil and the plug member 31 is fixed to the oil filling port 32, the check valve 33 is automatically opened and the primary tank 19 is communicated with the space 7, and the primary tank 19 is stored. The lubricating oil is pressurized by the compressed air, opens the check valve 25, and flows out into the intermediate tank 23.

In such an operation, when the oil filler port 32 is opened to supply lubricating oil to the primary tank 19 while the spray lubricant is in operation, the check valve 25 closes due to the drop in the internal pressure of the primary tank 19, causing the primary tank to flow from the intermediate tank 23. Preventing the flow of lubricating oil to tank 19, intermediate tank 2
Since the lubricating oil stored in the lubricating oil 3 and the primary tank 8 can be sprayed and mixed into the compressed air for a long period of time, the lubricating oil filling operation can be carried out well without the need for special lubricating pressurizing means. can. In addition, since the opening/closing valve body 27 of the check valve 25 is made of synthetic resin and can have a specific gravity close to that of lubricating oil, the slight lubricating oil flow in the flow path 26 caused by a small drop in the internal pressure of the primary tank 19 can be prevented. The opening/closing valve body 27 can be operated to close in response, and the lubricating oil once stored in the intermediate tank 23, which corresponds to the minimum allowable level of the primary tank 19, can be used effectively. Moreover, by being able to use it effectively, the capacity of the intermediate tank 23 is sufficient to obtain spray mixing for about 3 to 5 minutes required for lubrication work, and it is possible to do so without increasing the size of the entire spray lubrication device. Handling performance can be improved by achieving good lubrication work.

[Effect of idea]

In this way, the present invention provides a flow path in which the inflow and outflow ports are communicated with each other in the main body of the oil supply device, which has an inflow port and an outflow port for compressed air, and a constriction portion is provided in the middle of the flow path to speed up the flow of compressed air. A discharge path is provided so that the lubricating oil can be discharged and sprayed into the compressed air by opening at the constricted part of the flow path, and the stored lubricating oil is disposed below the position of the constricted part so that the compressed air in the flow path is discharged from the constricted part. A small-capacity secondary tank is provided so that it can be pressurized and sprayed from the discharge passage, and a large-capacity primary tank with an oil filler port that can be opened and closed with a stopper is arranged above and below. A communication path is provided to guide compressed air from the flow path after the constriction part, and an intermediate tank for storing lubricating oil to be sent to the secondary tank is partitioned in the primary tank by communicating with the flow path after the throttle part. In addition to providing communication passages that lead lubricating oil from the primary tank to the intermediate tank, oil fill ports are opened in each communication passage using plug members, so that when the pressure in the primary tank decreases, compressed air flowing through the flow passage goes through each communication passage. In order to prevent lubricating oil from flowing out from the oil filling port, a valve is installed in each intermediate tank that is closed, and one end of the intermediate tank is connected to the flow path in front of the throttle part so that the lubricating oil stored in the intermediate tank can be sent upward to the secondary tank. By opening the oil supply path into the stored lubricant oil and having one end communicating with the secondary tank, it is possible to fill the primary tank with lubricant oil while compressed air is flowing through the flow path. can be obtained in good condition. In addition, the capacity of the intermediate tank is sufficient to obtain spray mixing for a short time required for the oil filling operation, and this has the effect that it can be done without increasing the size of the spray oil feeder as a whole.

[Brief explanation of the drawing]

The drawings show an embodiment of the spray lubrication device according to the present invention, in which FIG. 1 is a longitudinal sectional view taken along the line - of FIG. 2, FIG. 2 is a plan view, and FIG. 3 is a view taken along the line - of FIG. 2.
4 is an enlarged sectional view of section A in FIG. 3, and FIG. 5 is a sectional view showing the operating state of FIG. 4. DESCRIPTION OF SYMBOLS 1... Oil supply main body, 2... Inlet, 3... Outlet, 4, 5... Channel, 8... Secondary tank, 11...
...Aperture hole (aperture part), 13...Discharge path, 19...
Primary tank, 23... Intermediate tank, 25, 33...
...Check valve.

Claims (1)

[Scope of utility model registration request] A flow path is formed in the oil dispenser body having a compressed air inlet and an outlet, and has a constriction section in the middle that communicates between the inflow and outflow ports, and speeds up the flow of compressed air. A discharge passage is provided which opens in the part to enable the lubricating oil to be discharged and sprayed into the compressed air, and a discharge passage is provided below the position of the constriction part in which the stored lubricant is pressurized by the action of compressed air in the flow passage after the constriction part. A small-capacity secondary tank is installed to allow for more discharge spraying, and a large-capacity primary tank has an oil filler port that can be opened and closed with a plug member, arranged vertically. A communication path is provided to guide the lubricating oil to the secondary tank, and an intermediate tank is formed in the primary tank to store the lubricating oil to be sent to the secondary tank. In addition to providing communication passages for guiding the oil, oil fill ports are opened in each communication passage using plug members, and when the pressure in the primary tank is reduced, compressed air flowing through the flow passages flows out from the oil fill ports through each communication passage. In order to prevent this, valves that are closed are installed in each intermediate tank, and one end is connected to the flow path in front of the constriction section, and the other end is connected to the secondary tank so that the lubricating oil stored in the intermediate tank can be sent upward to the secondary tank. A spray oil supply device having an oil supply passage communicating with the lubricating oil and opening into the stored lubricating oil.