CN210800664U - An oil filling port anti-drip device and an oil filling device - Google Patents

Abstract

The utility model relates to an oil injection port anti-drip device and an oil injection device, comprising an oil injection nozzle and a ventilation pipe, one end of the oil injection nozzle is provided with an oil injection port, and the oil injection nozzle is provided with a liquid flow channel for oil to pass through. A one-way conduction device is provided, the breather pipe is arranged in the oil filling nozzle, one end of the breather tube is correspondingly arranged with the one-way conduction device, and the other end of the breather tube penetrates the side wall of the oil filling nozzle. The one-way conduction device has a first station and a second station. When the one-way conduction device is located in the first station, the one-way conduction device blocks the ventilation pipe pipeline, and the flow channel is conducted; the one-way conduction device is located in the second station. In the working position, the one-way conduction device blocks the flow channel, and the ventilation tube is connected. The utility model also relates to an oil injection device. The breather pipe can make the inner and outer pressure of the oil filling nozzle equal, no negative pressure will be formed in the oil filling port, and the residual oil in the oil filling nozzle will not accumulate at the oil filling port, so as to avoid oil dripping at the oil filling port.

Description

An oil filling port anti-drip device and an oil filling device

technical field

The utility model relates to the field of mechanical design fluid transportation, in particular to an oil filling port anti-drip device and an oil filling device.

Background technique

At present, many production lines are equipped with automatic oil filling equipment. For example, automobile engines and gearboxes need to be filled with a certain amount of lubricating oil when they leave the factory or when they are tested online.

In the prior art, most of the refueling equipment in the production line is automatic equipment, usually an oil pump pumps oil from the oil tank, one end of the oil pipeline is connected to the oil pump, and the other end of the oil pipeline is connected to the oil filling nozzle, and then the oil filling nozzle is automatically driven by the cylinder, the oil cylinder or the manipulator. Advance and retreat or lift, and refuel the oil receiving container. When the oil filling is stopped, there is often a large amount of oil remaining at the oil filling port of the oil filling nozzle. During the movement of the oil filling nozzle, the residual oil often drips onto the surface of the workpiece or other places, so that the oil stains have to be cleaned up in the subsequent process, resulting in unnecessary waste of working hours and loss of oil products. In severe cases, the oil stains cannot be completely cleaned and the product quality is affected.

Utility model content

In view of the technical problems existing in the prior art, one of the purposes of the present invention is to provide an anti-drip device for the oil filling port, which can reduce the residual oil at the oil filling port of the oil filling nozzle when the oil filling is stopped, and avoid the oil filling port at the oil filling port. The oil drops will not cause waste of working hours and loss of oil products.

In view of the technical problems existing in the prior art, the second purpose of the present utility model is to provide an oil filling device, which can greatly reduce the residual oil at the oil filling port of the oil filling nozzle when the oil filling is stopped, and avoid the oil at the oil filling port. The dripping will not cause waste of working hours and loss of oil products.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

An anti-drip device for an oil injection port, comprising an oil injection nozzle and a vent pipe, one end of the oil injection nozzle is provided with an oil injection port, the oil injection nozzle is provided with a liquid flow channel for oil to pass through, the flow liquid channel is provided with a one-way conducting device, and the ventilation pipe Set in the oil filling nozzle, one end of the breather pipe is set corresponding to the one-way guide device, the other end of the breather pipe is penetrated through the side wall of the oil filling nozzle, the outer side wall of the breather pipe is fixedly connected to the side wall of the oil filling nozzle, and the one-way guide device has a first station. and the second station, when the one-way conduction device is located at the first station, the one-way conduction device blocks the ventilation pipe pipeline, and the flow channel conducts; when the one-way conduction device is located at the second station, the one-way conduction device blocks The fluid channel is cut off, and the ventilation tube is turned on.

Further, the inner side wall of the oil filling nozzle is provided with an annular protrusion, the one-way conduction device includes a steel ball and a spring, the steel ball is arranged between the annular protrusion and the oil filling port and abuts on the center of the annular protrusion, and the ventilation pipe is arranged between the steel ball and the steel ball. Between the oil filling ports, one end of the breather pipe is arranged corresponding to the steel ball, the spring is sleeved on the breather pipe, one end of the spring is abutted against the steel ball, and the other end of the spring is abutted against the breather pipe.

Further, the inner side wall of the oil filling nozzle is provided with an annular protrusion, the one-way conduction device includes a steel ball and a spring, the steel ball is arranged between the annular protrusion and the oil filling port and abuts on the center of the annular protrusion, and the ventilation pipe is arranged between the steel ball and the steel ball. Between the oil filling ports, one end of the breather pipe is arranged corresponding to the steel ball, the spring is penetrated in the center of the annular protrusion, one end of the spring is fixed to the steel ball, and the other end of the spring faces away from the oil filling port and is fixed to the inner side wall of the oil filling nozzle.

Further, the cross section of the annular protrusion gradually increases from one end of the oil injection nozzle to the other end of the oil injection nozzle.

Further, the annular protrusion is a tapered tube.

Further, one end of the oil filling nozzle is provided with a screen mesh, and the screen mesh is correspondingly arranged with the oil filling port.

Further, the ventilation pipe includes a straight pipe and a curved pipe, the straight pipe is parallel to the liquid flow channel, one end of the straight pipe is arranged corresponding to the steel ball, the other end of the straight pipe is butted with one end of the curved pipe, the other end of the curved pipe is perpendicular to the side wall of the oil filling nozzle, and the curved pipe is The other end of the pipe passes through the side wall of the oil injection nozzle, and the other end of the spring abuts against the outer side wall of the other end of the elbow.

Further, the outer side wall of the other end of the elbow is in contact with the screen.

An oil filling device comprises an oil tank, an oil pump, an oil delivery pipeline, a driving device and an oil filling port anti-drip device. The oil filling port anti-drip device operates.

Compared with the prior art, the utility model has the following advantages:

When the oil filling is stopped, the oil often forms an oil film at the oil filling port. In the prior art, due to the existence of the oil film, negative pressure is easily formed in the oil injection port, and the oil remaining in the oil injection nozzle accumulates at the oil injection port, and finally drips down during the vibration or movement of the oil injection nozzle to cause pollution. By arranging the ventilation pipe, when the oil filling is stopped, the negative pressure will not be formed in the oil filling port, and the oil remaining in the oil filling nozzle will not gather at the oil filling port, so that the oil remaining at the oil filling port of the oil filling nozzle can be reduced. To avoid oil dripping at the oil filling port, it will not cause waste of working hours and loss of oil products.

Description of drawings

Fig. 1 is a schematic diagram of the utility model when the steel ball and the cone mouth are sealingly connected.

FIG. 2 is a schematic diagram of the direction A of FIG. 1 .

FIG. 3 is a schematic left side view of FIG. 1 .

FIG. 4 is a schematic structural diagram of an alternative solution for the fixed connection between the steel ball and the spring of the present invention.

5 is a schematic diagram of the utility model when the steel ball is disconnected from the cone mouth.

6 is a schematic structural diagram of an oil injection device of the present invention.

Description of reference numbers:

1——Grease nozzle, 11——Internal thread oil pipe joint, 12——Cone port, 13——Oil filling port;

21 - steel ball, 22 - spring;

3 - vent pipe, 31 - vent;

4 - screen mesh;

51 - fuel tank, 52 - oil pump, 53 - oil pipeline, 54 - oil filling port anti-drip device, 55 - driving device.

Detailed ways

The present utility model will be described in further detail below.

As shown in Figures 1 to 3 and 5, an oil filling port anti-drip device includes an oil filling nozzle 1 and a vent pipe 3. One end of the oil filling nozzle 1 is provided with an oil filling port 13, and the oil filling nozzle 1 is provided with a passage for the oil to pass through. The liquid flow channel is provided with a one-way conduction device on the flow liquid channel, the ventilation pipe 3 is set in the oil injection nozzle 1, one end of the ventilation pipe 3 is set corresponding to the one-way conduction device, and the other end of the ventilation pipe 3 penetrates the side wall of the oil injection nozzle 1. . The other end of the ventilation pipe 3 is provided with a ventilation port 31. When the two ends of the ventilation pipe 3 are connected, air can enter the oil filling nozzle 1 from the outside through the ventilation opening 31, so that the internal and external pressures of the oil filling nozzle 1 are balanced. The outer side wall of the ventilation pipe 3 is fixedly connected to the side wall of the oil filling nozzle 1 , so that the ventilation pipe 3 can be fixedly arranged in the oil filling nozzle 1 . The one-way conduction device has a first station and a second station. When the one-way conduction device is located at the first station, the one-way conduction device blocks the pipeline of the ventilation pipe 3, and the flow channel is conducted; the one-way conduction device is located in the first station. In the second station, the one-way conduction device blocks the flow channel, and the ventilation pipe 3 is conducted.

Specifically, one end of the oil filling nozzle 1 is provided with an oil filling port 13 , and the other end is provided with an internal thread oil pipe joint 11 for connecting the oil pipeline 53 . The flow channel is provided with a one-way conducting device, so that the oil can only pass through the flow channel in one direction.

When oil filling is performed, the oil under pressure pushes the one-way conducting device to displace, and the oil flows through the flow channel and flows out from the oil filling port 13 . Since one end of the vent tube 3 is set corresponding to the one-way conducting device, the one-way conducting device is displaced to the first position and is blocked at one end of the vent tube 3, thereby blocking the pipeline of the vent tube 3, and the oil will not flow into the vent tube 3 and flow out to the Outside the side wall of oil filler 1;

When the oil injection is stopped, the oil pressure in the flow channel is reduced, the one-way conduction device is reset, the one-way conduction device is displaced to the second station to block the flow channel, and the one-way conduction device leaves one end of the ventilation pipe 3 to make the ventilation pipe 3 conduct. . Although the oil filling port 13 is sealed by an oil film, since the ventilation pipe 3 is arranged in the oil filling nozzle 1, and the ventilation port 31 penetrates the side wall of the oil filling nozzle 1, when the ventilation pipe 3 is connected, the ventilation pipe 3 can make the oil filling nozzle 1. 1 The internal pressure is equal to the external pressure of the oil injection nozzle 1. No negative pressure will be formed in the oil injection port 13. The oil remaining in the oil injection nozzle 1 will not accumulate at the oil injection port 13, so as to avoid the oil dripping at the oil injection port 13. It will cause waste of working hours and loss of oil products.

An annular protrusion is provided on the inner side wall of the oil injection nozzle 1. The one-way conduction device includes a steel ball 21 and a spring 22. The steel ball 21 is arranged between the annular protrusion and the oil injection port 13 and abuts on the center of the annular protrusion, and can communicate with the annular protrusion. The protrusions form a sealed connection to block the flow path. The breather tube 3 is arranged between the steel ball 21 and the oil filling port 13 , one end of the breather tube 3 is arranged corresponding to the steel ball 21 , the spring 22 is sleeved on the breather tube 3 , one end of the spring 22 is in contact with the steel ball 21 , and the other end of the spring 22 is Abuts against the vent pipe 3 .

Specifically, the ventilation pipe 3 is provided below the steel ball 21 and is provided corresponding to the annular protrusion. When the oil under pressure pushes the steel ball 21 to move against the elastic force of the spring 22, the steel ball 21 moves towards one end of the vent pipe 3 and blocks the mouth of one end of the vent pipe 3, so that the oil will not flow into the vent pipe 3 and flow out to the injector. Outside the side wall of grease nipple 1. When oil injection is stopped, the spring 22 pushes the steel ball 21 to reset, so that the steel ball 21 returns to the center of the annular protrusion to form a sealing connection and block the flow channel. The spring 22 is sleeved on the ventilation pipe 3, the spring 22 and the ventilation pipe 3 are all arranged on the same side of the steel ball 21, and the centers of the spring 22, the ventilation pipe 3 and the annular protrusion are located on the same straight line, so that the steel ball 21 and the ventilation pipe are located on the same line. The sealing connection formed between 3 and between the steel ball 21 and the annular protrusion is more precise and has better sealing performance. One end of the spring 22 is in contact with the steel ball 21, and the other end of the spring 22 is in contact with the vent pipe 3, so that the device for fixing the spring 22 can be omitted, and the cost can be saved. It should be noted that the purpose of the steel ball 21 used in this embodiment is to open and close the fluid channel, and in practical applications, it may have different materials or different shapes, as long as the functions and principles are the same.

Or an alternative solution can be adopted: as shown in FIG. 4 , the inner side wall of the oil filling nozzle 1 is provided with an annular protrusion, the one-way conduction device includes a steel ball 21 and a spring 22, and the steel ball 21 is provided on the annular protrusion and the oil filling port 13. It abuts against the center of the annular protrusion, and can form a sealing connection with the annular protrusion to block the flow channel. The breather pipe 3 is arranged between the steel ball 21 and the oil filling port 13, one end of the breather pipe 3 is arranged corresponding to the steel ball 21, the spring 22 is inserted in the center of the annular protrusion, one end of the spring 22 is fixed to the steel ball 21, and the other end of the spring 22 It faces away from the oil filling port 13 and is fixed to the inner side wall of the oil filling nozzle 1 . Specifically, the spring 22 is parallel to the liquid flow channel and passes through the center of the annular protrusion. The spring 22 and the ventilation tube 3 are respectively arranged on both sides of the steel ball 21, the shape and structure of the ventilation tube 3 is not limited by the spring 22, and more design options are available. At the same time, when the oil filling is stopped, the steel ball 21 is sealed and connected to the annular protrusion. Since the spring 22 is arranged above the steel ball 21, the oil remaining on the spring 22 is blocked by the steel ball 21 and will not flow to the oil filling port 13. , thereby reducing the drop of oil at the oil filling port 13.

The cross section of the annular protrusion gradually increases from one end of the oil injection nozzle 1 to the other end of the oil injection nozzle 1 . Therefore, the use of steel balls 21 of different diameters can form a seal with the annular protrusion.

The annular protrusion is a conical tube. The annular protrusion presents a slope structure and forms a conical opening 12, which has the function of automatic alignment, making it easier for the steel ball 21 to align the center of the annular protrusion, and the sealing performance is better.

One end of the oil injection nozzle 1 is provided with a screen mesh 4 , and the screen mesh 4 is arranged corresponding to the oil injection port 13 . Even if a small amount of oil drops in the oil filling nozzle 1, since the screen 4 seals the oil filling port 13, the dripping oil will drip on the screen 4, thus preventing the oil from dripping from the oil filling port 13 to the oil filling port 13. Contamination is formed on the outside of grease nipple 1.

The ventilation pipe 3 includes a straight pipe and a curved pipe. The straight pipe is parallel to the liquid flow channel. One end of the straight pipe is correspondingly arranged with the steel ball 21. The other end of the elbow passes through the side wall of the oil injection nozzle 1, and the other end of the spring 22 abuts against the outer side wall of the other end of the elbow. The setting of the straight tube makes the spring 22 easy to be sleeved outside the straight tube, and the spring 22 will not be skewed when it is deformed by the straight tube; One end of the steel ball 21 direction.

The outer side wall of the other end of the elbow is in contact with the screen 4 . This structure has the following functions: 1) The straight pipe can be set to a longer length, and correspondingly, the spring 22 can also be set to a longer length, so that the spring 22 has an appropriate elastic force, which can not only push the steel ball 21 to reset, but also can be easily affected by the pressure oil 2) Compared with the oil droplets directly dripping onto the screen 4 from a higher position in the oil injection nozzle 1, a small amount of oil remaining in the oil injection nozzle 1 can slide down the straight pipe and the curved pipe after adopting this structure. On the screen 4, the kinetic energy is small, and the oil is not easy to break away from the constraints of the screen 4 and drip to the outside.

An oil filling device, as shown in Figure 6, includes an oil tank 51, an oil pump 52, an oil pipeline 53, a driving device 55 and an oil filling port anti-drip device 54. The input end of the oil pump 52 is connected to the oil tank 51, and the output end of the oil pump 52 is connected to one end of the oil pipeline 53. , the other end of the oil pipeline 53 is connected to the anti-drip device 54 of the oil injection port, and the driving device 55 drives the anti-drip device 54 of the oil injection port to act.

Specifically, the oil tank 51 contains the oil to be filled, and the oil pump 52 pressurizes the oil in the oil tank 51 and outputs it to the oil pipeline 53 , and then sends the oil to the oil filling port anti-drip device 54 . The driving device 55 may be a motor or a cylinder, and its function is to fix the anti-drip device 54 of the oil filling port and move the anti-drip device 54 of the oil filling port to the position where oil needs to be filled. Please refer to FIG. 1 and FIG. 5 at the same time. During operation, the oil pump 52 rotates to pressurize and deliver the oil to the oil filling port anti-drip device 54. Under the action of the oil pressure, the steel ball 21 of the oil filling port anti-drip device 54 is pushed open, and the oil flows out from the oil filling port 13 of the oil filling port anti-drip device 54 . When the oil pump 52 stops rotating, the oil pressure in the oil pipeline 53 drops, and the steel ball 21 of the anti-drip device 54 at the oil filling port is pushed and reset by the spring 22 to block the flow channel.

In the prior art, the valve that controls the on-off of the oil pipeline is usually arranged on the oil pipeline 53 away from the oil filling port 13, and the distance from the valve to the oil filling port 13 is relatively long. There will be a lot of oil remaining in the oil pipeline 53 , so the oil dripping phenomenon is likely to occur at the oil filling port 13 . The oil filling device of the present invention adopts the oil filling port anti-drip device 54, and the valve that controls the on-off of the oil pipeline is a one-way conduction device located in the oil filling port anti-drip device 54. The distance between the one-way conduction device and the oil filling port 13 It is very short. When the oil filling is stopped, very little oil remains in the oil filling nozzle 1 from the one-way conduction device to the oil filling port 13, so it is not easy for the oil droplet to drop at the oil filling port 13.

The above-mentioned embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited by the above-mentioned embodiments, and any other changes, modifications, and substitutions made without departing from the spirit and principle of the present utility model , combination and simplification, all should be equivalent replacement methods, which are all included in the protection scope of the present invention.

Claims (9)

1. An oil filling port anti-drip device is characterized in that: it comprises an oil filling nozzle and a ventilation pipe, one end of the oil filling nozzle is provided with an oil filling port, and the oil filling nozzle is provided with a flow liquid passage for oil to pass through, and a single flow liquid passage is provided on the flow liquid passage. For the guide device, the breather pipe is set in the oil filling nozzle. One end of the breather pipe is set corresponding to the one-way guide device. The device has a first station and a second station. When the one-way conduction device is located at the first station, the one-way conduction device blocks the ventilation pipe pipeline, and the flow channel is conducted; when the one-way conduction device is located at the second station , the one-way conduction device blocks the flow channel, and the ventilation tube is connected. 2. An anti-drip device for oil filling port according to claim 1, characterized in that: the inner side wall of the oil filling nozzle is provided with an annular protrusion, the one-way conduction device comprises a steel ball and a spring, and the steel ball is arranged on the annular protrusion and the oil filling. Between the ports and abutting on the center of the annular protrusion, the ventilation pipe is arranged between the steel ball and the oil filling port, one end of the ventilation pipe is correspondingly arranged with the steel ball, the spring is sleeved on the ventilation pipe, one end of the spring is in contact with the steel ball, and the spring The other end is in contact with the vent pipe. 3. An anti-drip device for oil filling port according to claim 1, characterized in that: the inner side wall of the oil filling nozzle is provided with an annular protrusion, the one-way conduction device comprises a steel ball and a spring, and the steel ball is arranged on the annular protrusion and the oil filling. between the ports and abut against the center of the annular protrusion, the ventilation pipe is arranged between the steel ball and the oil filling port, one end of the ventilation pipe is correspondingly arranged with the steel ball, the spring is penetrated in the center of the annular protrusion, and one end of the spring is fixed to the steel ball, The other end of the spring faces away from the oil filling port and is fixed on the inner side wall of the oil filling nozzle. 4 . The anti-drip device for oil filling port according to claim 2 , wherein the cross section of the annular protrusion gradually increases from one end of the oil filling nozzle to the other end of the oil filling nozzle. 5 . 5. An anti-drip device for an oil filling port according to claim 4, wherein the annular protrusion is a conical tube. 6. An anti-drip device for oil filling port according to claim 2, characterized in that: one end of the oil filling nozzle is provided with a screen mesh, and the screen mesh is arranged corresponding to the oil filling port. 7. An oil filling port anti-drip device according to claim 6, characterized in that: the vent pipe comprises a straight pipe and a curved pipe, the straight pipe is parallel to the liquid flow channel, one end of the straight pipe is arranged corresponding to the steel ball, and the other side of the straight pipe is arranged correspondingly. One end of the elbow is butted with one end of the elbow, the other end of the elbow is perpendicular to the side wall of the oil injection nozzle, the other end of the elbow passes through the side wall of the oil injection nozzle, and the other end of the spring abuts on the outer wall of the other end of the elbow. 8 . The anti-drip device for oil filling port according to claim 7 , wherein the outer side wall of the other end of the elbow is abutted against the screen. 9 . 9. An oil filling device, characterized in that it comprises an oil tank, an oil pump, an oil pipeline, a driving device and the oil filling port anti-drip device according to any one of claims 1 to 8, the input end of the oil pump is connected to the oil tank, and the output end of the oil pump is connected to One end of the oil pipeline and the other end of the oil pipeline are connected to the anti-drip device of the oil injection port, and the driving device drives the action of the anti-drip device of the oil injection port.

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