A lubricating oil production leak-proof filling device and filling method thereof

Abstract

The present invention relates to the field of filling-related technical fields, and discloses a lubricant production anti-leakage filling device and a filling method thereof. In order to solve the problem of difficulty in determining the sealing state of the lubricant bottle and the lack of overflow protection measures during the filling process of the lubricant bottle, an oil suction pipe is used to suck the lubricant bottle. When there is no leakage in the bottle, the suction of the bottle by the oil suction pipe causes the pressure in the bottle to decrease, and then the lubricant in the oil delivery tank is sucked and filled using the low pressure. Similarly, when there is a leak in the bottle, the external airflow will directly enter the bottle according to the leak location, so that the pressure in the bottle is always consistent with the external pressure, and the lubricant suction function will not be completed, thereby realizing the function of leak detection in the bottle. Secondly, because the bottom of the oil suction pipe extends into the bottle according to the height-limiting oil pipe to suck, when too much lubricant is input into the bottle, the lubricant in the bottle is sucked according to the height-limiting oil pipe to prevent the lubricant liquid level in the bottle from being too high, thereby realizing the function of anti-overflow.

Description

Technical Field

[0001] The present invention relates to the technical field related to filling, and in particular to a leakage-proof filling device for lubricating oil production and a filling method thereof. Background Art

[0002] Lubricant filling is a core link in the lubricant production process. Its filling efficiency, precision and quality control level are directly related to the competitiveness of the product in the market.

[0003] A search revealed that patent publication number CN210437435U proposes a lubricating oil filling machine with easy adjustment. The device's design features a rotating turntable within an adjustment box, with multiple retaining slots on its surface for inserting metering tablets. By inserting metering tablets into the retaining slots at different positions, the spacing between the tablets can be adjusted, thereby controlling the volume of lubricating oil to be filled between adjacent tablets, enabling convenient adjustment of the single filling volume.

[0004] As can be seen from the above technical solutions, the current method for quantitative filling of lubricating oil mainly adopts the method of pre-determining the weight of the lubricating oil in a turntable and then transferring the measured lubricating oil into the lubricating oil bottle. However, in actual operation, this filling method has the following problems:

[0005] 1. When lubricating oil is poured into the oil bottle through the filling nozzle, existing equipment cannot detect whether the oil bottle is leaking. Once a leaking oil bottle is found, the oil is likely to overflow, causing waste and polluting the production environment.

[0006] 2. Because the total amount of lubricant stored in the turntable is fixed, if the oil bottle capacity is less than the pre-stored lubricant volume and the oil nozzle is used for oil delivery, the equipment lacks an overflow protection mechanism. In this case, the lubricant may still leak, affecting filling quality and production safety. Summary of the Invention

[0007] The present invention proposes a leak-proof filling device and a filling method for lubricating oil production, which have the functions of detecting leakage in the bottle and preventing overflow, and can effectively solve the problems mentioned in the background technology of difficulty in judging the sealing status in the bottle and lack of overflow protection measures during the filling process of the lubricating oil bottle.

[0008] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a lubricating oil production and leakage-proof filling device, comprising: a base, on the surface of which an oil suction tank and an oil delivery tank are fixedly mounted; the top of the oil delivery tank uses an oil delivery pipe to deliver lubricating oil to the oil delivery chamber inside it, and the lubricating oil in the oil delivery chamber is input into the bottle according to the oil through hole opened on the surface of the base; an oil suction piston driven by an oil cylinder is installed in the oil delivery tank, an oil suction pipe is mounted on the inside of the oil suction piston, and a height-limiting oil pipe connected to the oil suction pipe and inserted into the bottle is fixed at the bottom of the base; the height-limiting oil pipe uses suction to the bottle to realize the input of lubricating oil while preventing the lubricating oil from overflowing.

[0009] Furthermore, a one-way liquid flow valve is fixedly installed at the bottom end of the height-limiting oil pipe.

[0010] Furthermore, a detection chamber is provided inside the oil delivery tank, and a damping hole for connecting the detection chamber and the oil delivery chamber is provided on the inner side of the oil delivery tank, and a delivery pipe for connecting the oil suction tank and the detection chamber is fixedly installed on the side of the oil delivery tank; a detection piston is installed in the detection chamber, a guide rod is installed on the end of the detection piston, and an isolation rod is connected to the outside of the guide rod by a connecting frame; when the detection piston drives the isolation rod to move, the isolation rod realizes the sealing / connection of the oil hole.

[0011] Furthermore, a one-way valve is fixedly installed on the inner side of the oil delivery tank to allow the medium in the detection chamber to flow one-way into the oil delivery chamber; and a blocking rod is fixedly installed on the side of the isolation rod to block the one-way valve.

[0012] Furthermore, the end of the guide rod is connected to a release push seat, a push spring is connected between the connecting frame and the release push seat, a limit arm is hingedly connected to the inner side of the oil supply tank and above the guide rod, and the connecting frame reaches the middle of the limit arm to limit the left movement of the connecting frame.

[0013] Furthermore, a reset push seat is connected to the bottom of the oil suction piston, and the reset push seat pushes the isolation rod to seal the oil hole.

[0014] Furthermore, an in-position detection switch is fixedly installed on the inner side of the oil delivery tank and on the inner side of the end away from the damping hole.

[0015] Furthermore, a pressure relief piston rod is movably installed at the bottom of the base and is moved upward by a tension spring.

[0016] A filling method for a leak-proof filling device for lubricating oil production, comprising the following steps:

[0017] S1. The control unit makes the oil suction piston move downward for a specified distance and then stops. The oil suction tank draws the lubricating oil from the oil suction pipe and the height-limiting oil pipe, and draws the oil from the detection chamber through the delivery pipe.

[0018] When the seal is good, the detection piston moves to the left, and after touching the in-position detection switch, the oil suction piston moves further downward, releasing the push seat so that the limit arm releases the restriction on the connecting frame, and the push spring pushes the connecting frame to move the isolation rod to the left, releasing the oil hole blockage and blocking the one-way valve.

[0019] When the seal leaks, the detection piston cannot touch the position detection switch and the oil suction piston stops descending.

[0020] S2. After the oil hole is opened, the oil suction piston moves downward, and the oil suction tank sucks the lubricating oil into the bottle; when there is too much lubricating oil, the height-limiting oil pipe sucks the excess lubricating oil back to the oil tank, and the one-way liquid flow valve at its bottom prevents backflow.

[0021] S3. The oil suction piston moves down to the bottom, the reset push seat pushes the isolation rod to the right to block the oil hole, and pushes the pressure relief piston rod to connect the inside and outside of the bottle.

[0022] After the blocking rod releases the restriction on the one-way valve, the push spring pushes the release seat to the right, causing the lubricating oil in the right detection chamber to flow back to the oil delivery chamber, and the excess lubricating oil in the suction bottle of the left detection chamber to the oil suction tank.

[0023] Release the push seat away from the limit arm, and the limit arm falls to limit the connecting frame from moving left.

[0024] S4. Release the push seat and pull the detection piston to the right, so that the one-way valve connects the detection chamber and the delivery pipe; the oil cylinder moves the oil suction piston upward, squeezing the air to make the lubricating oil flow back from the one-way valve to the oil delivery chamber through the delivery pipe and the detection chamber, completing the lubricating oil filling.

[0025] The present invention has the following beneficial effects:

[0026] The present invention provides a leak-proof filling device for lubricating oil production and a filling method thereof. The device realizes suction filling of lubricating oil bottles through an oil suction pipe and integrates the dual functions of leakage detection and overflow prevention control:

[0027] During the normal filling process, the oil suction pipe continuously draws air from the bottle, creating a negative pressure environment. When the bottle is sealed properly, the pressure inside the bottle decreases as the suction pipe draws air, creating a pressure differential with the oil delivery tank, driving the lubricant through the delivery pipe to complete the filling process. If a leak occurs in the bottle, external air will flow directly into the bottle through the leak, maintaining equilibrium between the internal pressure and the external environment. This prevents the oil suction pipe from establishing an effective negative pressure, automatically terminating the filling process and enabling real-time leak detection.

[0028] The bottom of the oil suction pipe is equipped with a limited height oil pipe structure, and its lower end is always located below the preset safety level. When the lubricating oil level in the bottle reaches the limited height oil pipe inlet, the oil is sucked through the limited height oil pipe, achieving dynamic level balance. By limiting the effective suction height, the liquid level does not exceed the safe capacity of the bottle, effectively preventing spills and leaks caused by overfilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0030] The present invention can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0031] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the overall internal planar cross-sectional structure of the present invention;

[0033] Figure 3 for Figure 3 A schematic diagram of the enlarged structure of the part E in the middle;

[0034] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of the F part in the middle;

[0035] Figure 5 This is a schematic diagram of the overall internal three-dimensional structure of the present invention;

[0036] Figure 6 This is a schematic diagram of the installation position and three-dimensional structure of the reset push seat of the present invention;

[0037] Figure 7 This is a schematic diagram of the internal three-dimensional structure of the oil delivery tank of the present invention;

[0038] Figure 8 Schematic diagram of the oil suction piston in the present invention moving downward and before and after the sealing test in the storage bottle;

[0039] Figure 9 This is a schematic diagram of the lubricating oil filling state of the present invention;

[0040] Figure 10 This is a schematic diagram of the secondary quantitative state of the lubricating oil of the present invention;

[0041] Figure 11 This is a schematic diagram of the excess lubricating oil recovery state of the present invention.

[0042] In the figure: 1. base; 2. oil supply tank; 201. oil supply pipe; 202. oil supply chamber; 203. detection chamber; 204. damping hole; 205. one-way valve; 3. oil suction tank; 4. oil cylinder; 5. delivery pipe; 6. isolation rod; 600. blocking rod; 601. connecting frame; 7. height-limiting oil pipe; 8. oil suction piston; 801. reset push seat; 9. pressure relief piston rod; 10. oil suction pipe; 11. in-position detection switch; 12. guide rod; 120. detection piston; 13. release push seat; 130. push spring; 14. limit arm. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] See also Figure 1 、 Figure 2 and Figure 5 It can be seen that the base 1 is in the shape of a truncated cone, and the outer inclined surface of the base 1 is wrapped with rubber. When the base 1 reaches the mouth of the lubricating oil bottle, Figure 2 As shown, the outer rubber of the base 1 is pressed against the bottle mouth, so that the relative sealing between the base 1 and the bottle mouth can be achieved. Figure 1 and Figure 5 As can be seen, a mounting bracket is fixedly mounted on the outside of base 1. This bracket is typically connected to a vertically moving reciprocating assembly, which includes, but is not limited to, a slide that reciprocates via a screw and a piston cylinder that utilizes a pneumatic or hydraulic actuator. This reciprocating motion allows base 1 to accurately press against the mouth of the lubricating oil bottle, creating a seal between the two.

[0045] The surface of the base 1 is respectively provided with an oil suction tank 3 and an oil delivery tank 2 which are fastened together by flanges. Figure 2 、 Figure 5 and Figure 7 As shown, the top of the oil delivery tank 2 is threadedly connected to an oil delivery pipe 201, which is generally connected to a lubricating oil storage tank. The inner cavity of the oil delivery tank 2 is named the oil delivery chamber 202, and an oil hole or oil delivery pipe is provided between the oil delivery chamber 202 and the bottom of the base 1 to ensure that the lubricating oil in the oil delivery chamber 202 can be input into the bottle. Figure 2 It can be seen that the inner cavity of the oil suction tank 3 is movably fitted with an oil suction piston 8. The oil suction piston 8 can not only move up and down along the axial direction of the oil suction tank 3, but also the outer side of the oil suction piston 8 and the inner side of the oil suction tank 3 are relatively sealed by a rubber ring. The shape of the oil suction piston 8 is annular, and the inner sliding sealing sleeve is fitted with an oil suction pipe 10. Figure 2 and Figure 5 It can be seen that the bottom end of the oil suction pipe 10 is threadedly fastened to the surface of the base 1, and the top end is close to the top of the inner cavity of the oil suction tank 3. Correspondingly, a height-limiting oil pipe 7 sealed with the oil suction pipe 10 is movably installed on the surface of the base 1, and the height-limiting oil pipe 7 can move up and down relatively along the inner side of the oil suction pipe 10. For the fixation of the height-limiting oil pipe 7, refer to Figure 3As shown, the bottom of the base 1 is threaded with a straight bolt. The bolt pushes against the side of the height-limiting oil pipe 7, thereby limiting the length of the height-limiting oil pipe 7 and further limiting the height of the height-limiting oil pipe 7 into the lubricating oil bottle. The oil cylinder 4 is fixedly mounted on the top of the oil suction tank 3, and the output end of the oil cylinder 4 passes through the oil suction tank 3 and is threadedly connected to the surface of the oil suction piston 8. The oil cylinder 4 is controlled by a hydraulic control unit. The control unit includes, but is not limited to, a power source, an actuator, a control element, and a sensor. This is also a conventional control technology currently used by personnel in the industry. It only needs to meet the required up and down movement of the oil suction piston 8 in this application, and will not be described in detail here. In actual application, the output end of the oil cylinder 4 drives the oil suction piston 8 downward. The oil suction pipe 10 and the height-limiting oil pipe 7 are used to suck air from the lubricating oil bottle into the inner cavity of the oil suction tank 3. As the pressure in the bottle decreases, the lubricating oil in the oil delivery pipe 201 is delivered to the bottle, thereby completing the lubricating oil filling process. When the level of the lubricating oil in the bottle reaches the same level as the bottom end of the height-limiting oil pipe 7, the continuously pumped height-limiting oil pipe 7 will draw the lubricating oil directly into the inner cavity of the oil suction tank 3, thus preventing the lubricating oil bottle from overflowing due to excessive lubricating oil. In addition, to prevent the lubricating oil from flowing back into the bottle after the height-limiting oil pipe 7 is pumped, a one-way liquid flow valve is fixedly installed at the bottom end of the height-limiting oil pipe 7. The valve body, valve core, valve seat, spring and other key components are used to achieve one-way fluid flow control. When the positive pressure difference exceeds the spring preload, the valve core opens to form a passage. Under the action of reverse pressure, the valve core and valve seat fit tightly together to achieve zero leakage cutoff.

[0046] Based on the above content, it can be seen that in order to ensure that the inner cavity of the oil suction tank 3 can meet the filling work of the lubricating oil bottle during suction, the volume of the inner cavity of the oil suction tank 3 needs to be 2-4 times larger than the volume of the lubricating oil bottle to be filled, to ensure that the oil suction tank 3 has sufficient suction strength for the lubricating oil bottle.

[0047] In order to realize the sealing test of the lubricating oil bottle to be filled, so as to prevent the leakage of lubricating oil caused by defects such as cracks in the bottle, according to Figure 2 、 Figure 4 and Figure 7As can be seen, a detection chamber 203 is defined within the oil delivery tank 2, and a one-way valve 205 is fixedly mounted inside the oil delivery tank 2, positioned between the detection chamber 203 and the oil delivery chamber 202. This one-way valve 205 ensures that the medium in the detection chamber 203 can flow only in one direction into the oil delivery chamber 202. The detection chamber 203 is a cylindrical groove, and a damping orifice 204 is defined inside the oil delivery tank 2, enabling direct communication between the end of the detection chamber 203 and the oil delivery chamber 202. This small circular hole provides a damping effect. The advantage of this design is that a detection piston 120 is provided inside the oil delivery tank 2 and in a sliding sealing sleeve in the detection chamber 203, and a delivery pipe 5 is fixedly installed on the side of the oil delivery tank 2 for connecting the top of the inner cavity of the oil suction tank 3 with the detection chamber 203. Generally speaking, the top height of the delivery pipe 5 should be relatively lower than the top of the oil suction pipe 10. When the oil suction piston 8 moves downward, the pressure in the inner cavity of the oil suction tank 3 is reduced. On the one hand, the oil suction pipe 10 and the height-limiting oil pipe 7 are used to suck the lubricating oil bottle under the base 1. On the other hand, the suction pressure acts on the detection chamber 203 according to the delivery pipe 5, forcing the detection piston 120 to have a tendency to move relatively away from the oil delivery chamber 202. Since the detection piston 120 moves to the left, the direction reference Figure 7 The right chamber will slowly draw in the lubricating oil by utilizing the damping hole 204 and at the same time reduce the speed at which the detection piston 120 moves to the left.

[0048] from Figure 4 、 Figure 5 and Figure 7 As can be seen, the end of the detection piston 120 is fixedly installed with a guide rod 12 extending into the oil delivery chamber 202, and the outer side of the guide rod 12 is movably sleeved with a connecting frame 601, and the bottom end of the connecting frame 601 is threadedly connected to an isolation rod 6 that moves radially along the oil delivery tank 2. Figure 7 It can be clearly seen that the isolation rod 6 is elliptical in shape, and the end of the isolation rod 6 passes through the oil delivery tank 2 and the oil suction tank 3 and is located in the inner cavity of the oil suction tank 3. Figure 2 As can be seen in the figure, the end of the isolation rod 6 is located below the oil suction piston 8 and has a rounded corner. A sliding seal is formed between the side of the isolation rod 6 and the top of the base 1. Generally, the side of the isolation rod 6 is longer than the diameter of the oil hole / tube on the base 1. When the isolation rod 6 moves above the oil hole / tube, its side can block the top of the oil hole / tube, thereby sealing off the oil delivery cavity 202 from the oil hole / tube. Similarly, when the isolation rod 6 is away from the oil hole / tube, the two can be directly connected.

[0049] The end of the guide rod 12 is threadedly connected to a release push seat 13, which is truncated into a cone shape to ensure that the outer periphery thereof is an inclined surface. Figure 7It can be seen that a push spring 130 is connected between the connecting frame 601 and the release push seat 13. The elastic force of the push spring 130 pushes the connecting frame 601 and the release push seat 13 to keep them in a relatively distant state. A limit arm 14 is hingedly connected to the inside of the oil tank 2 and above the guide rod 12. The limit arm 14 is L-shaped and the end of the limit arm 14 is rounded. Under normal circumstances, the connecting frame 601 abuts against the protruding step groove in the middle of the limit arm 14, thereby limiting its movement to the left, that is, Figure 7 In the direction shown, the release push seat 13 is also relatively far away from the connecting frame 601 under the elastic force of the push spring 130. At this time, the side of the isolation rod 6 blocks the oil hole / tube. When the oil suction piston 8 moves downward, causing the pressure in the detection chamber 203 to decrease, the detection piston 120 will move to the left, and by pulling the guide rod 12 and the release push seat 13, it will move to the left synchronously. In this process, due to the damping effect generated by the damping hole 204, the detection piston 120 moves slowly and the release push seat 13 moves slowly to the left. When the release push seat 13 approaches the limit arm 14, the inclined surface on the outside of the release push seat 13 is used to press against the rounded corner of the end of the limit arm 14, forcing the limit arm 14 to have a tendency to deflect upward, thereby releasing the movement restriction of the connecting frame 601. Afterwards, under the elastic force of the push spring 130, the connecting frame 601 drives the isolation rod 6 to move to the left, realizing the release of the oil hole / tube blockage by the isolation rod 6. This shows that before the oil hole / tube is connected, the movement of the detection piston 120 is damped by the flow of lubricating oil in the damping hole 204, resulting in a relatively delayed opening of the isolation rod 6. As mentioned above, the downward movement of the oil suction piston 8 simultaneously draws suction from the lubricating oil bottle. If the lubricating oil bottle is not leaking, the sealed environment forces the detection piston 120 to continuously move away from the oil delivery chamber 202 until the push seat 13 is released, pushing the limit arm 14 and releasing the restriction on the connecting frame 601. Ultimately, the isolation rod 6 releases its blockage of the oil hole / tube, establishing communication between the oil delivery chamber 202 and the lubricating oil bottle. Similarly, if the lubricating oil bottle leaks, the external airflow will be directly input into the bottle through the leaking part, thereby relieving the pressure in the bottle, and eventually the pressure in the inner cavity of the oil suction tank 3 will not continue to decrease, the detection cavity 203 will not continue to provide power for the movement of the detection piston 120, and the isolation rod 6 will not eventually open. Therefore, using the above method, it is possible to ensure that the isolation rod 6 is delayed in starting, and the sealing inside the lubricating oil bottle can be tested during the delay stage.

[0050] On this basis, in order to improve the detection accuracy, a position detection switch 11 is fixedly installed on the inner side of the oil delivery tank 2 and located on the inner side of the end away from the damping hole 204. The position detection switch 11 is an elastic momentary switch. Its advantage is that after being pressed and turned on, the position detection switch 11 can still be pressed and turned on within a certain range. In addition, when the position detection switch 11 is pressed and turned on, an electrical signal will be sent to the control unit to determine that the detection piston 120 has moved to the position. The purpose of this design is to Figure 2 and Figure 8 As shown, when the oil suction piston 8 moves downward and to a specified distance, the specified distance can be determined autonomously by the operator controlling the oil cylinder 4, causing the oil suction piston 8 to suck a certain amount of fluid from the inner cavity of the oil suction tank 3, thereby reducing the pressure in the inner cavity of the oil suction tank 3. Afterwards, the oil suction piston 8 remains relatively stationary, which makes the pressure in the inner cavity of the oil suction tank 3 relatively constant. If there is no leakage in the lubricating oil bottle, the detection piston 120 will eventually contact the in-place detection switch 11. When the in-place detection switch 11 is turned on, an electrical signal will be transmitted to the control unit, causing the oil cylinder 4 to further push the oil suction piston 8 downward. Similarly, if the detection piston 120 does not contact the in-place detection switch 11, it indicates a leak, and the pressure in the inner cavity of the oil suction tank 3 will not decrease, resulting in the detection piston 120 not having enough power to approach the in-place detection switch 11. From this, it can be seen that after the oil suction piston 8 descends to a specified height according to the setting of the in-position detection switch 11, and on the premise of ensuring that the height can provide sufficient power for the detection piston 120 to approach the in-position detection switch 11, the oil suction piston 8 is kept stationary and waits to detect whether there is leakage in the lubricating oil bottle, and further detect the leakage of the lubricating oil bottle.

[0051] In order to ensure that the lubricating oil in the lubricating oil bottle can reach the set height, it is necessary to perform a secondary suction to set the height of the lubricating oil bottle. Figure 2 、 Figure 6 and Figure 7 It can be seen that the bottom of the oil suction piston 8 is provided with a reset push seat 801 which is fastened with bolts, and the reset push seat 801 is in the shape of a cone. Figure 2 As shown, the angle between the two inclined surfaces of the middle section of the reset push seat 801 is between 90-135°. When the oil suction piston 8 drives the reset push seat 801 downward to the bottom, the side inclined surface of the reset push seat 801 tends to push the isolation rod 6 to block the oil hole / tube. At the same time, a pressure relief piston rod 9 is movably installed at the bottom of the base 1 and is moved upward by a tension spring. The pressure relief piston rod 9 mainly includes a round rod and a piston. The round rod is sleeved in the base 1, and the top of the round rod passes through the base 1 and is located above the surface of the base 1. A circulation space is provided between the round rod and the base 1. The circulation space can be a circumferentially arranged rectangular groove. Under normal conditions, the piston on the pressure relief piston rod 9 is restricted by the tension spring, so that the piston seals the base 1 and the bottom chamber of the oil suction tank 3. When in use, the strength of the tension spring is relatively large, and only the reset push seat 801 can realize the downward push of the pressure relief piston rod 9, and make the round rod push against the piston to move downward and realize the connection between the lubricating oil bottle below the base 1 and the chamber below the oil suction tank 3. From Figure 1 and Figure 2As can be seen, multiple through-holes are circumferentially defined on the outside of the oil suction tank 3, allowing direct communication between the outside air and its chamber. Therefore, when the pressure relief piston rod 9 is unblocked, the lubricating oil bottle can communicate directly with the outside. Subsequently, the detection piston 120 moves away from the in-position detection switch 11, causing it to pump suction into the detection chamber 203. This, in turn, pumps suction into the bottle via the delivery pipe 5, the oil suction pipe 10, and the height-limiting oil pipe 7. Since the isolation rod 6 has already blocked the oil holes / pipes, this secondary pumping through the height-limiting oil pipe 7 allows for quantitative adjustment of the lubricating oil in the bottle.

[0052] At the same time, when the lubricating oil is delivered to the lubricating oil bottle, in order to prevent the detection piston 120 from moving quickly away from the in-place detection switch 11 due to pressure changes, the Figure 4 and Figure 7 It can be seen that a sealing rod 600 is fixedly installed on the side of the isolation rod 6, and the end of the sealing rod 600 needs to be rubber sealed. When the isolation rod 6 releases the blockage of the oil hole / tube, the sealing rod 600 simultaneously blocks the one-way valve 205 to ensure that when the oil hole / tube is connected, the movement speed of the detection piston 120 in the detection chamber 203 is limited.

[0053] From the above, it can be seen that the actual application of this application includes the following filling steps:

[0054] 1. Position restrictions of various parts under normal conditions, such as Figure 8 As shown on the left, reference numbers Figure 2 :

[0055] Under the control of the control unit, the oil cylinder 4 causes the oil suction piston 8 to ascend to the top. The detection piston 120 moves to the right and approaches the damping orifice 204. The detection piston 120 is now positioned between the one-way valve 205 and the damping orifice 204. The middle portion of the limit arm 14 engages the connecting bracket 601, and the isolation rod 6 blocks the oil passage hole / pipe. This is also the normal position in this application when not in operation.

[0056] Second, the sealing test of lubricating oil bottle, such as Figure 8 As shown on the right, the reference numbers are Figure 2 :

[0057] The control unit uses the oil cylinder 4 to push the oil suction piston 8 downward a specified distance. This specified distance can be manually set, but it must ensure that when the downward movement of the oil suction piston 8 reduces the pressure within the oil suction tank 3, the detection piston 120 has sufficient strength to move toward the in-position detection switch 11. After the oil suction piston 8 reaches the specified height, it stops moving. At this point, the lubricating oil bottle is drawn from the interior of the oil suction tank 3 via the oil suction pipe 10 and the height-limiting oil pipe 7. Furthermore, the detection chamber 203 is drawn from the interior of the oil suction tank 3 via the delivery pipe 5.

[0058] When the lubricating oil bottle is well sealed, the inner cavity of the oil suction tank 3 is in communication with the detection chamber 203, and both are at relatively low pressure, causing the detection piston 120 to move to the left. Based on the relative sliding between the guide rod 12 and the connecting frame 601 and the pulling of the release push seat 13, the push spring 130 is compressed. Due to the damping hole 204, the lubricating oil in the oil delivery chamber 202 is slowly input into the detection chamber 203 to the right of the detection piston 120, causing the detection piston 120 to slowly move to the left and relatively close to the in-place detection switch 11. Due to the good seal inside the bottle, the detection piston 120 will eventually touch the in-place detection switch 11, turning it on. The in-place detection switch 11 transmits an electrical signal to the control unit, which uses the control unit to cause the oil cylinder 4 to push the oil suction piston 8 further downward. As the oil suction piston 8 moves further downward, the pressure in the inner cavity of the oil suction tank 3 further decreases, and the pressure in the detection chamber 203 decreases, which further increases the intensity of the detection piston 120's leftward movement, further squeezing the in-place detection switch 11. During this process, the outer inclined surface of the push seat 13 is released from contact with the limit arm 14, forcing the limit arm 14 to move upward. The upwardly deflected limit arm 14 releases the movement restriction on the connecting frame 601. Subsequently, under the elastic force of the push spring 130, the connecting frame 601 pushes the isolation rod 6 to the left. The isolation rod 6 releases the blockage of the oil hole / pipe, and the blocking rod 600 moves to the left, sealing the one-way valve 205. Because the blocking rod 600 blocks the one-way valve 205, the movement speed of the detection piston 120 is always limited when the oil hole / pipe is connected.

[0059] On the contrary, if the seal of the lubricating oil bottle leaks, the external air will be replenished into the inner cavity of the oil suction tank 3 according to the leakage location, which will cause the pressure in the detection chamber 203 to be consistent with the external pressure, and will no longer provide power for the movement of the detection piston 120. The detection piston 120 will eventually fail to contact the detection switch 11, and the oil cylinder 4 will also be unable to further push the oil suction piston 8 downward.

[0060] 3. Lubricating oil is input into the bottle and overflow is prevented, such as Figure 9 As shown, reference numerals Figure 2 :

[0061] Due to the opening of the oil hole / tube, when the oil suction piston 8 descends, the pressure in the inner cavity of the oil suction tank 3 decreases. The oil suction pipe 10 and the height-limiting oil pipe 7 are used to continuously pump the oil into the bottle, so that the lubricating oil in the oil delivery chamber 202 is continuously input into the bottle. Since the height-limiting oil pipe 7 is inserted into the bottle, the suction of the height-limiting oil pipe 7 prevents excessive lubricating oil from being input into the bottle. Specifically, when too much lubricating oil is input, its liquid level will be above the bottom end of the height-limiting oil pipe 7. The suction of the lubricating oil by the height-limiting oil pipe 7 allows the excess lubricating oil to be transported to the inner cavity of the oil suction tank 3 according to the transportation of the height-limiting oil pipe 7 and the oil suction pipe 10, thus preventing the excess lubricating oil in the bottle from overflowing. At the same time, because a one-way liquid flow valve is provided at the bottom end of the height-limiting oil pipe 7, the lubricating oil entering the height-limiting oil pipe 7 will not flow back into the bottle.

[0062] 4. Secondary quantitative measurement of lubricating oil, such as Figure 10 As shown, reference numerals Figure 2 :

[0063] When the oil suction piston 8 continues to move downward and finally moves to the bottom, the bottom inclined surface of the reset push seat 801 will hit the end of the isolation rod 6 and push the isolation rod 6 to move radially outward along the oil suction tank 3 until the isolation rod 6 blocks the oil hole / tube again. At the same time, the right isolation rod 6 pushes the connecting frame 601 to move to the right, thereby further compressing the push spring 130.

[0064] The descending reset push seat 801 simultaneously pushes the pressure relief piston rod 9 downward, and enables the inside of the bottle to communicate with the outside.

[0065] When the blocking rod 600 releases the restriction on the one-way valve 205, the detection chamber 203 on the left side of the detection piston 120 will no longer provide negative pressure. Pushed by the elastic force of the push spring 130, the release push seat 13 moves to the right, pulling the detection piston 120 to squeeze the right detection chamber 203. The lubricating oil in the right detection chamber 203 flows back from the one-way valve 205 to the oil delivery chamber 202. At the same time, the pressure in the left detection chamber 203 is reduced by the suction of the detection piston 120. When the bottle is sucked again through the delivery pipe 5, the oil suction tank 3 and the height-limiting oil pipe 7, the lubricating oil in the bottle that is relatively higher than the height-limiting oil pipe 7 can be sucked into the oil suction tank 3.

[0066] Moreover, when the push seat 13 is released and moves to the right and relatively away from the limiting arm 14, the limiting arm 14 deflects downward due to its own gravity, and the step groove in the middle of the limiting arm 14 is again located on the left side of the connecting frame 601, thereby limiting the movement of the connecting frame 601 to the left.

[0067] 5. Recovery of lubricating oil, such as Figure 11 As shown, reference numerals Figure 2 :

[0068] The release push seat 13, through the guide rod 12, pulls the detection piston 120 continuously to the right until it passes the one-way valve 205, directly connecting the detection chamber 203 and the delivery pipe 5. Subsequently, when the oil cylinder 4 pulls the oil suction piston 8 upward, it compresses the airflow within the oil suction tank 3, transferring the air within the oil suction tank 3 to the oil delivery chamber 202 through the delivery pipe 5 and the detection chamber 203. The upward movement of the oil suction piston 8 simultaneously causes the lubricating oil above it to rise upward. When the lubricating oil reaches the top of the delivery pipe 5, the increased pressure of the air within the oil suction tank 3 forces the lubricating oil back into the detection chamber 203 through the delivery pipe 5. Ultimately, it flows back through the one-way valve 205 into the oil delivery chamber 202, ready for re-injection into the next lubricating oil bottle. This completes the filling of one lubricating oil bottle.

[0069] From the above content, it can be seen that since the oil delivery chamber 202 also accumulates air pressed into the inner cavity of the oil suction tank 3, this part of the air is generally located above the lubricating oil. Therefore, in actual application, a degassing component can be provided on the top of the oil delivery tank 2 and on one side of the oil delivery pipe 201 according to actual conditions, so as to release the air in the oil delivery chamber 202 to the outside.

Claims

1. A leak-proof filling device for lubricating oil production, characterized in that: include: A base (1) having an oil suction tank (3) and an oil delivery tank (2) fixedly mounted on its surface; The top of the oil delivery tank (2) uses an oil delivery pipe (201) to deliver lubricating oil to the oil delivery chamber (202) inside the oil delivery tank (2), and the lubricating oil in the oil delivery chamber (202) is input into the bottle according to the oil through hole opened on the surface of the base (1); An oil suction piston (8) driven by an oil cylinder (4) is installed in the oil suction tank (3), an oil suction pipe (10) is sleeved on the inner side of the oil suction piston (8), and a height-limiting oil pipe (7) connected to the oil suction pipe (10) and inserted into the bottle is fixed at the bottom of the base (1); the height-limiting oil pipe (7) realizes the input of lubricating oil while preventing the lubricating oil from overflowing by sucking the inside of the bottle; A detection cavity (203) is provided inside the oil delivery tank (2), and a damping hole (204) for connecting the detection cavity (203) and the oil delivery cavity (202) is provided inside the oil delivery tank (2). A delivery pipe (5) for connecting the oil suction tank (3) and the detection cavity (203) is fixedly installed on the side of the oil delivery tank (2); A detection piston (120) is mounted in the detection chamber (203). A guide rod (12) is mounted on the end of the detection piston (120). The outer side of the guide rod (12) is connected to an isolation rod (6) via a connecting frame (601). When the detection piston (120) drives the isolation rod (6) to move, the isolation rod (6) blocks / opens the oil hole. A one-way valve (205) is fixedly installed on the inner side of the oil delivery tank (2) for allowing the medium in the detection chamber (203) to flow in one direction into the oil delivery chamber (202); a blocking rod (600) is fixedly installed on the side of the isolation rod (6) for blocking the one-way valve (205); The end of the guide rod (12) is connected to a release push seat (13), a push spring (130) is connected between the connecting frame (601) and the release push seat (13), a limit arm (14) is hingedly connected to the inner side of the oil delivery tank (2) and above the guide rod (12), and the connecting frame (601) abuts against the middle of the limit arm (14) to limit the left movement of the connecting frame (601).

2. The anti-leakage filling device for lubricating oil production according to claim 1, characterized in that: A one-way liquid flow valve is fixedly installed at the bottom end of the height-limiting oil pipe (7).

3. The anti-leakage filling device for lubricating oil production according to claim 1, characterized in that: The bottom of the oil suction piston (8) is connected to a reset push seat (801), and the reset push seat (801) pushes the isolation rod (6) to achieve blocking of the oil hole.

4. The anti-leakage filling device for lubricating oil production according to claim 3, characterized in that: An in-position detection switch (11) is fixedly installed inside the oil delivery tank (2) and located inside the end away from the damping hole (204).

5. The anti-leakage filling device for lubricating oil production according to claim 4, characterized in that: A pressure relief piston rod (9) is movably mounted on the bottom of the base (1) and is moved upward by a tension spring.

6. A filling method for the lubricating oil production leak-proof filling device according to claim 5, characterized in that: The following steps are involved: S1, the control unit causes the oil suction piston (8) to move downward a specified distance and then stop, and the oil suction tank (3) sucks the lubricating oil bottle through the oil suction pipe (10) and the height-limiting oil pipe (7), and sucks the detection chamber (203) through the delivery pipe (5); When the seal is good, the detection piston (120) moves to the left, and after touching the in-position detection switch (11), the oil suction piston (8) moves further downward, releasing the push seat (13) so that the limit arm (14) releases the restriction on the connecting frame (601), and the push spring (130) pushes the connecting frame (601) to move the isolation rod (6) to the left, thereby releasing the oil hole blockage and blocking the one-way valve (205); When the seal leaks, the detection piston (120) cannot touch the position detection switch (11), and the oil suction piston (8) stops descending; S2. After the oil hole is opened, the oil suction piston (8) moves downward, and the oil suction tank (3) sucks the lubricating oil into the bottle; when there is too much lubricating oil, the height-limiting oil pipe (7) sucks the excess lubricating oil back to the oil tank (3), and the one-way liquid flow valve at the bottom of the pipe prevents backflow; S3, the oil suction piston (8) moves down to the bottom, resets the push seat (801), pushes the isolation rod (6) to the right to block the oil hole, and pushes the pressure relief piston rod (9) to connect the inside and outside of the bottle; After the blocking rod (600) releases the restriction on the one-way valve (205), the push spring (130) pushes the release push seat (13) to move rightward, so that the lubricating oil in the right detection chamber (203) flows back to the oil delivery chamber (202), and the left detection chamber (203) sucks excess lubricating oil in the bottle to the oil suction tank (3); The push seat (13) is released away from the limiting arm (14), and the limiting arm (14) falls to limit the connecting frame (601) to move leftward; S4, release the push seat (13) and pull the detection piston (120) to the right, so that the one-way valve (205) connects the detection chamber (203) and the delivery pipe (5); the oil cylinder (4) moves the oil suction piston (8) upward, squeezing the air to make the lubricating oil flow back from the one-way valve (205) to the oil delivery chamber (202) through the delivery pipe (5) and the detection chamber (203), thus completing the filling of the lubricating oil.

Images