Oil outlet nozzle for oil drums

Abstract

An oil outlet nozzle for oil drums for oil drums, comprising: Fixed pipe, including oil inlet and oil outlet; And The closing mechanism, which is arranged at the oil inlet of the fixed pipe, and is provided at the bottom of the closing mechanism with a first sealing structure which is used to open and close the oil circuit channel of the oil inlet; And The oil outlet pipe which can be axially slidably inserted into the oil outlet port, the outer wall of which is provided with a second sealing structure which is used to seal the gap between the oil outlet pipe and the fixed pipe; And The linkage structure disposed between the oil outlet pipe and the locking mechanism; And Wherein the first sealing structure and the second sealing structure are physically separated from each other and operate independently of each other; And The linkage structure converts the axial displacement of the oil outlet pipe into an opening and closing movement of the locking mechanism.

Description

CROSS-REFERENCES TO THE RELEVANT APPLICATIONS

[0001] This application claims priority to U.S. patent application for the invention having application number 19278638, filed July 23, 2025, entitled "Oil discharge nozzle for oil drums," and the entire contents of said application and its amendments are incorporated by reference into this application. TECHNICAL FIELD

[0002] The present utility model relates to the technical field of oil outlet nozzles, in particular to an oil outlet nozzle for oil drums. STATE OF THE ART

[0003] In conventional oil drum discharge nozzles, the oil discharge pipe and the internal valve closure system (e.g., plug valve, ball valve, or cone valve core) generally use a rigid, integrated structure. This design connects the discharge line, which is susceptible to dynamic loads, to the gate / stem, which is responsible for the critical sealing, and thus represents the central design disadvantage of this solution.

[0004] Lateral forces generated by the frequent opening and closing of the valve and the operation of the oil gun force the fully integrated structure (including the oil outlet tube and valve cone) to rotate or axially move. This forced movement results in continuous and irreversible mechanical friction and wear of the mating surface between the root of the oil outlet tube and the fixed valve seat (or valve body). The wear of the root mating surface directly leads to an increase in its backlash. Even more critically, this wear and the resulting change in backlash caused by the movement of the oil outlet tube are inevitably transmitted to the sealing interface between the spool / valve stem and the valve seat.The increase in the fitting gap not only directly weakens the sealing effect but also leads to shaking of the entire structure, further exacerbating the stress and risk of loosening of other associated fasteners, creating a vicious cycle. This wear easily increases the risk of oil leaks and severely limits the overall stability and long-term reliability of the device. CONTENTS OF THE PRESENT UTILITY MODEL

[0005] The present utility model provides an oil outlet nozzle for oil drums to solve the problems described in the prior art.

[0006] In order to achieve the above-mentioned purpose of the invention, the present utility model adopts the following technical features: An oil outlet nozzle for oil drums comprises: a fixed tube having an oil inlet and an oil outlet; the closing mechanism is arranged at the oil inlet of the fixed tube, and its bottom side of the closing mechanism is provided with a first sealing structure for opening and closing the oil circulation channel of the oil inlet; the oil outlet pipe can be axially slidably inserted into the oil outlet, and its outer wall is provided with a second sealing structure for sealing the gap between the oil outlet pipe and the fixed tube; the linking structure is arranged between the oil outlet pipe and the closing mechanism; among them, the first sealing structure and the second sealing structure are physically separated from each other and operate independently; the linking structure converts the axial displacement of the oil outlet pipe into an opening and closing movement of the closing mechanism.

[0007] Compared with the prior art, the present utility model offers the advantage that the oil outlet pipe and the closing mechanism each have an independent sealing system through the linkage structure, so that the first sealing structure and the second sealing structure are physically separated and operate independently of each other; when the oil outlet pipe is worn due to operation, its gap change is not transmitted to the sealing interface of the closing mechanism, thereby completely eliminating the risk of seal failure due to the vibration of the entire structure and ensuring long-term leak-free operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The drawings of the description, which are part of this application, serve to provide a better understanding of the present utility model. The schematic embodiments of the present utility model and their explanations serve to explain the present utility model and do not constitute an undue limitation of the present utility model. In the attached drawing: Fig. 1 shows a three-dimensional schematic representation of an embodiment provided by the present utility model; Fig. 2 shows a perspective sectional view of the Fig. 1 shown embodiment; Fig. 3 shows a schematic structural representation of section I in the Fig. 2 shown embodiment; Fig. 4 shows a schematic representation of the fixed tube structure of the Fig. 1 shown embodiment; Fig. 5 shows a schematic structural diagram of the oil outlet pipe according to the Fig. 1 illustrated embodiment; Fig. 6 shows a perspective sectional view of the Fig. 4 shown embodiment; Fig. 7 shows a further schematic representation of the Fig. 4 shown embodiment; Fig. 8 shows a schematic structural diagram of the link structure in another embodiment provided by the present utility model; Fig. 9 is a schematic structural diagram of the threaded cap and the stopper cover in another embodiment of the present utility model; Fig. 10 shows a schematic representation of the structure of section A in the Fig. 9 illustrated embodiment.

[0009] In the figures: fixed tube (100); oil inlet (110); elevation (120); closing mechanism (200); sealing plate (210); a first seal (300); annular groove (310); first sealing ring (320); oil outlet pipe (400); a second seal (500); recess (510); a second sealing ring (520); linking structure (600); connecting plate (610); limiting step (620); a first spring (630); mounting plate (640); mounting cylinder (650); connecting column (660); a second spring (670); air duct (700); air inlet (710); air outlet (720); limiting mechanism (800); sliding groove (810); limiting block (820); fixing block (830); pressure plate (840); limiting groove (850); limiting plate (860); threaded cap (900); Inclined teeth (910); Stop cover (920); Pick (930); Fixed teeth (940). DETAILED DESCRIPTION

[0010] In the following, the technical features according to the embodiment of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiment of the present utility model. Obviously, the described embodiment is a part of the embodiment of the present utility model, not all embodiments. The following description of at least one embodiment is essentially illustrative and is in no way intended to be a limitation of the present utility model and its application or use. Based on the embodiments in the present utility model, all other embodiments obtained by a person skilled in the art without creative work fall within the scope of the present utility model.

[0011] It should be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it is also to be understood that the terms "comprising" and / or "including," when used in this specification, refer to the presence of features, steps, acts, devices, components, and / or combinations thereof.

[0012] Unless expressly stated otherwise, neither the relative arrangement of components and steps shown in these embodiments, nor numerical expressions and numerical values ​​limit the scope of the present utility model. At the same time, it is to be understood that the dimensions of the individual parts shown in the drawings are not drawn in actual scale for ease of description. Techniques, methods, and devices known to those skilled in the art may not be explained in detail, but should be considered part of the permitted description where appropriate. In all examples shown and discussed herein, all specific values ​​are to be understood as exemplary and not limiting. Other embodiments may therefore have different values.It should be noted that similar reference numerals and letters designate similar items in the following drawings and therefore, once an item is defined in one drawing, no further discussion is required in the following drawings.

[0013] An oil outlet nozzle for oil drums comprises a fixed tube 100 and an oil inlet tube 400 arranged inside the fixed tube 100 (see Fig. 1 and Fig. 2).

[0014] In this embodiment (see Fig. 4 and Fig. 6) The fixed tube 100 includes an oil inlet 110 and an oil outlet, and the inner wall of the oil inlet 110 is provided with a closing mechanism 200. When the closed structure 200 is closed, the oil in the tank cannot enter the fixed tube 100. When the closed structure 200 is opened, the oil in the tank can smoothly enter the fixed tube 100.

[0015] In other embodiments (see Fig. 6) the closing mechanism 200 comprises a sealing plate 210, on the side wall of the sealing plate 210 a first seal 300 is arranged, and the first seal 300 can be used to open and close the oil inlet 110.

[0016] In other embodiments (see Fig. 6 and Fig. 7) The first seal 300 includes an annular groove 310 opened in the outer side wall of the seal plate 210, the inside of the annular groove is provided with a first seal ring 320, and the inner wall of the fixed tube 100 opposite side of the annular groove 310 is fixedly mounted with an annular protrusion 120, and one side of the first seal ring 320 contacts the surface of the protrusion 120. When the seal plate 210 is closed, the seal plate 210 drives the first seal ring 320 to adhere to the surface of the protrusion 120 to form a high-pressure adaptive sealing surface, thereby improving the sealing performance of the product.

[0017] In other embodiments (not shown in the figure), the first seal ring 320 and the protrusion 120 are provided. Instead, a permanent magnet ring is embedded in the side wall of the seal plate 210, and an electromagnetic coil is arranged at the corresponding position of the hard tube 100; When the seal plate 210 is closed, the electromagnetic coil is energized to generate a magnetic field that repulses the permanent magnet ring, and the repulsive force presses the seal plate 210 close to the inner wall of the hard tube 100, thereby forming a magnetically enhanced contact seal.

[0018] In other embodiments (not shown in the figure), the side wall of the sealing plate 210 is machined with a micropore array, the bottom of the micropores is connected to a vacuum chamber, and the cavity is connected to a micro-vacuum pump through a one-way valve. As the sealing plate 210 approaches the closed position, the vacuum pump starts sucking in the air in the micropores. Under the action of the negative pressure adsorption force, the sealing plate 210 fits tightly against the inner wall of the rigid tube 100. With the above structure, no spring preload is required, thus solving the leakage problem of low-viscosity oil (e.g., kerosene).

[0019] In this embodiment (see Fig. 2 and Fig. 3) the oil outlet pipe 400 is slidably arranged on the oil outlet pipe of the fixed pipe 100, a second seal 500 is provided on the inner wall of the oil outlet pipe 400.

[0020] In other embodiments (see Fig. 3 and Fig. 5) The second seal 500 includes an annular recess 510 opened in the outer edge of the oil outlet pipe 400, and the interior of the recess is provided with a second sealing ring 520, and one side of the second sealing ring 520 is in contact with the outer surface of the fixed tube 100. The second sealing ring 520 is compressed between the inner wall of the recess 510 of the oil outlet pipe 400 and the inner wall of the fixed tube 100 to form a tight annular sealing band, which can effectively prevent oil from leaking from the annular gap between the oil outlet pipe 400 and the fixed tube 100, preventing oil leakage, environmental pollution, equipment contamination, and potential safety hazards.

[0021] In other embodiments (not shown in the figure), the radial recess on the oil outlet pipe 400 is omitted. A flat O-ring is arranged between the end face of the fixed pipe 100 and the end face of the oil outlet pipe 400. When the flange or threaded portion of the oil outlet pipe 400 is screwed tightly to the fixed pipe 100, the O-ring is compressed axially between two planes, creating a barrier against radial leakage.

[0022] In this embodiment (see Fig. 2) A linking structure 600 is provided between the oil outlet pipe 400 and the sealing plate 210. By arranging the linking structure 600, the oil outlet pipe 400 and the locking mechanism 200 each have an independent sealing system, so that the first seal 300 and the second seal 500 are physically separated from each other and operate independently. When the second seal 500 on the surface of the oil outlet pipe 400 wears due to operation, the gap change is not transmitted to the first seal 300 of the locking mechanism 200, thereby completely eliminating the sealing failure caused by vibration of the overall structure, ensuring long-term leak-free operation, and avoiding the problem of insufficient sealing due to vibration of the overall structure, ensuring that the oil carrier always maintains a good seal during use.

[0023] In other embodiments (see Figure 6), the linking structure 600 comprises at least one connecting plate 610, which is fixedly mounted on the underside of the sealing plate 210. One end of the connecting element 610 is connected to the top of the oil outlet pipe 400, away from the sealing plate 210. A limiting step 620 is fixedly attached to the side of the underside of the connecting plate 610 facing the mounting pipe 100. The first spring 630 is mounted on top of the limiting step 620. The first spring 630 is mounted on top of the limiting step 620 and is guided on the surface of the connecting plate 610. The end of the first spring 630 facing away from the limiting step 620 is connected to the underside of the elevation 120.

[0024] During normal operation, the sealing plate 210 is open, and oil can flow smoothly into the oil inlet 110; when the oil supply needs to be stopped and the oil inlet 110 needs to be closed, the operator pulls out the oil outlet pipe 400, so that the oil outlet pipe 400 is axially displaced parallel to the fixed pipe 100, and the oil outlet pipe 400 moves the sealing plate 210 toward the closed position via the connecting plate 610 until the sealing plate 210 completely covers and seals the oil inlet 110; When the oil supply is to be restored, the operator releases the oil outlet pipe 400, at which time the connecting plate 610 quickly returns to its original position under the action of the elastic potential energy stored inside the first spring 630, the return movement simultaneously moving the sealing plate 210 away from the oil inlet 110 and releasing the oil flow again.

[0025] In other embodiments (not shown in the figure), the first sealing ring and the protrusion / permanent magnet ring / vacuum micropores are omitted. An annular thermal expansion alloy ring (e.g., a copper-nickel alloy) is incorporated into the side wall of the sealing plate 210, and an annular electric heating wire (connected to the thermostat) is attached to the corresponding position of the rigid tube 100. When the sealing plate 210 is closed, the annular area is electrically heated by the thermostat. The thermal expansion alloy ring expands due to heating and presses tightly against the inner wall of the rigid tube 100 to form a seal. The higher the temperature, the higher the sealing pressure, which is particularly suitable for high-temperature fluids (e.g., heat transfer oil). The heating stops when the power is turned off, and the alloy ring shrinks, facilitating the next opening.

[0026] In other embodiments of the connection structure 600 (see Fig. 8) The connecting structure 600 comprises at least two mounting plates 640 that are fixedly mounted on the inner wall of the oil outlet pipe 400. One end of the mounting plates 640, facing away from the oil outlet pipe 400, is fixedly connected to a mounting cylinder 650. The underside of the sealing plate 210 is fixedly connected to a connecting column 660, the other side of which is fixedly inserted into the mounting cylinder 650. A second spring 670 is fixedly attached to the top of the mounting plate 640, the other side of which is fixed to the bottom of the elevation 120.

[0027] In other embodiments (not shown in the figure), the electromagnetic ring is fixedly mounted on the inner wall of the mounting cylinder 650, and an iron piece is fixedly attached to the surface of the connecting column 660, so that a detachable connection between the connecting column 660 and the mounting cylinder 650 is enabled, which facilitates the personnel to later disassemble the oil outlet pipe 400 for repair.

[0028] In other embodiments (not shown in the figure), a filter screen is fixedly installed between two adjacent mounting plates 640. Because contaminants, additive precipitates, oxidation products, or moisture can settle and form bottom sediments during stationary storage of the oil (especially lubricating oil, hydraulic oil) in the storage tank, the use of the filter screen ensures that the oil entering the fixed tube 100 is filtered first. These heavier particles are effectively blocked by the filter screen when the oil begins to flow and cannot enter the subsequent fixed tube 100.

[0029] In other embodiments (not shown in the figure), the filter is replaced with a three-layer composite structure: Outer layer: coarse stainless steel filter to capture fibers and large particles; Middle layer: microporous sintered metal layer to capture additive precipitates; Inner layer: lipophilic and hydrophilic membrane blocks moisture and oxidizes colloids. The structure described above can provide a better filtering effect.

[0030] In other embodiments (not shown in the figure), a snap-in filter frame (not welded, but attached with clips) is arranged between the mounting plates 640. The filter grid has a three-layer composite structure, but is designed as a cylindrical screw type. The top of the filter grid frame is equipped with a rotating handle and a sealing cap. When the filter needs to be replaced or cleaned, unscrew the sealing cap, turn the handle, and pull out the entire filter module, replace the filter with a new one, or reinstall it in the reverse direction after cleaning.

[0031] In other embodiments (not shown in the figure), physical connections such as the connecting plate 610 or the mounting plate 640 are omitted. A permanent magnet array is embedded on the underside of the sealing plate 210, and an electromagnetic coil array is embedded at the corresponding position on the top of the oil outlet pipe 400. A displacement sensor is added to monitor the position of the oil outlet pipe. When the oil outlet pipe 400 is pulled out, the displacement sensor detects the movement signal, and the controller energizes the electromagnetic coil according to the preset logic, generates a magnetic field that attracts or repels the permanent magnet, and drives the sealing plate to open and close synchronously. The above structure completely eliminates mechanical wear to achieve a precise and contactless connection, suitable for sterile or ultra-clean environments.

[0032] In other embodiments (see Fig. 2 and Fig. 3) An air pressure equalization device is provided on the oil outlet pipe 400, which includes an air duct 700 arranged on the inner wall of one side of the oil outlet pipe 400. One end of the air duct 700 inside the fixed pipe 100 has an air outlet 720, and the lower end of the oil outlet pipe 400 has an air outlet 710 connected to the air duct 700. The end of the air duct 700 connected to the air inlet 710 is open. When the oil leaks from the oil outlet pipe 400, the internal pressure of the storage tank system decreases. At this time, the air is sucked in through the air inlet 710, flows through the inner channel of the air duct 700, and finally enters the storage tank system through the air outlet 720.This process continuously ensures the gas volume, effectively maintaining the air pressure balance between the storage tank system and the external environment and preventing the formation of a vacuum environment (negative pressure) caused by oil outflow. This avoids problems such as pump cavitation, oil outflow instability, and tank deformation.

[0033] In other embodiments (not shown in the figure), the air duct 700 is omitted, and an air pressure equalization cavity is arranged inside the rigid tube 100 and connected to the outside through a one-way air inlet valve. The inner wall of the oil outlet pipe 400 is provided with air guide holes that connect the air pressure equalization cavity to the storage tank. When oil drains, the negative pressure in the storage tank triggers the opening of the one-way air inlet valve. The outside air flows through the air pressure equalization cavity and the air guide holes into the interior of the storage tank, thereby avoiding disruption of the oil flow caused by the air duct structure.

[0034] In other embodiments (not shown in the figure), the air duct 700 or the air pressure equalization cavity is retained. A flow sensor and a humidity sensor are added at the air inlet 710 or the air guide hole, and the controller is connected to the sensors and the audible and visual alarm. During normal oil discharge, the air flow is proportional to the amount of oil. If an abnormal increase in air flow is detected, this indicates a seal failure (a large amount of outside air enters) and the air contains oil vapor (the humidity suddenly increases, indicating an internal oil leak in the air duct). The controller triggers alarms to ensure active monitoring of the seal condition and improve safety performance.

[0035] In this embodiment (see Fig. 1 and Fig. 4) A limiting mechanism 800 is provided on the side surface of the fixed tube 100. The limiting mechanism 800 includes a sliding groove 810 formed on the side surface of the fixed tube 100 in the same direction as the sliding movement of the oil outlet pipe 400. A limiting block 820 is fixedly installed on the outer bottom surface of the fixed tube 100 and below the limiting mechanism 800. The oil outlet pipe 400 is fixedly mounted on the outside with a fixing block 830, the end of which extends outwardly from the oil outlet pipe 400 through the sliding groove 810 into the fixed tube 100 and comes into contact with the upper surface of the limiting block 820. When the oil outlet pipe 400 reaches the lowest position of the fixed pipe 100, the limit block 820 strongly prevents further sliding of the oil outlet pipe 400 to limit a maximum extension position (to prevent the pipe body from accidentally falling out of the fixed pipe 100).At the same time, when the oil outlet pipe 400 moves to the end of the sliding groove 810 remote from the limiting block 820, the cooperation of the sliding groove 810 with the fixing block 830 limits the oil outlet pipe 400, thereby determining the minimum insertion depth of the oil outlet pipe 400 into the fixed pipe 100.

[0036] In other embodiments (not shown in the figure), a sawtooth rail is attached to the side wall of the sliding groove 810, and a resilient locking pawl is hinged to the underside of the mounting block 820. When the oil outlet pipe 400 is pushed upward, the locking pawl slides along the sawtooth slope, and when the oil outlet pipe 400 is pulled downward, the locking pawl returns to the locking position of the sawtooth-shaped recess. The engagement can be released by pressing the end of the locking pawl. With the structure described above, the device enables segmented locking of the stroke to adapt to the oil extraction requirements of oil tanks with different depths.

[0037] In other embodiments (not shown in the figure), piezoelectric ceramic plates are embedded on both sides of the sliding groove 810, the bottom of the mounting block 830 is provided with a damping rubber layer, and the limiting block 820 consists of a shape memory alloy wedge block connected to the heating wire. When the device vibrates, the piezoelectric ceramic generates current, which activates the SMA heating wire. The SMA wedge block expands and locks the mounting block, and the piezoelectric current simultaneously acts on the electrorheological fluid in the rubber layer, which instantly hardens and absorbs the vibration energy. It is suitable for construction machinery, ships, and other vibration environments to prevent the oil outlet pipe 400 from falling out.

[0038] In other embodiments (see Fig. 1 and Fig. 5) The limiting mechanism 800 further includes a limiting plate 860 disposed on the outer surface of the oil outlet pipe 400 and located below the fixed pipe 100. The upper surface of the limiting plate 860 is fixedly mounted with a pressure plate 840, and the outer surface of the fixed pipe 100 is provided with a limiting groove 850. The limiting groove 850 is positionally aligned with the pressure plate 910. When the oil outlet nozzle needs to discharge oil again, the pressure plate 840 presses on the upper edge of the limiting groove 850, effectively preventing the oil outlet pipe 400 from moving upward excessively under the influence of the spring force. This avoids possible damage due to impact loads, wear, or loosening of connections.

[0039] In other embodiments (see Fig. 1) The distance between the restrictor plate 860 and the fixed tube 100 is the length of the sliding slot 810. When the fixing block 830 is moved to an end of the sliding slot 810 remote from the restrictor block 820, the restrictor plate 860 comes into contact with the top surface of the restrictor groove 850.

[0040] In this embodiment (see Fig. 9) The outer surface of the rigid tube 100 is firmly mounted with a threaded cap 900, and the side of the threaded cap 900 facing the oil inlet 110 forms the open end. By attaching the threaded cap 900, this product can be securely mounted on the oil tank.

[0041] In other embodiments (see Fig. 9 and Fig.10), the side of the threaded cap 900 facing the oil inlet 110 is provided with oblique teeth 910. The side of the threaded cap 900 with the oblique teeth 910 is equipped with a stop cover 920 that is locked on the oil drum. On the side of the stop cover 920 facing the oblique tooth 910, an L-shaped pick 930 is permanently mounted. On the side of the pick 930 facing the oblique teeth 910, the fixed teeth 940 are permanently installed, the fixed teeth 940 of which are inclined in the opposite direction to the oblique teeth 910.

[0042] When the fixed tube 100 is mounted on the oil drum via the threaded cap 900, the opposite inclination of the teeth of the fixed tooth 940 compared to the oblique teeth 910 prevents the oblique tooth 910 from continuing to rotate. When the fixed tooth 940 comes into contact with the oblique tooth 910, the oblique tooth 910 can be restricted, thereby limiting the rotation of the threaded cap 900. This ensures that the fixed tube 100 is not displaced during oil extraction and the stability of the oil extraction is maintained. When the threaded cap 900 needs to be removed, the operator presses the pick 930 to deform it, so that the fixed tooth 940 is released from the oblique teeth 910 and the threaded cap 900 can be rotated to facilitate the removal of the fixed tube 100.

[0043] In summary, from the above description, it can be seen that the present utility model achieves the following technical effects: Through the linkage structure 400, the oil outlet pipe 400 and the locking mechanism 200 each have independent sealing systems, so that the first and second sealing structures are physically isolated from each other and operate independently; When the oil outlet pipe 400 is worn due to operation, its gap change is not transmitted to the sealing interface of the locking mechanism 200, thereby completely eliminating the risk of seal failure due to shaking of the entire structure and ensuring long-term operation without leakage.

[0044] When describing the present utility model, it should be understood that the directional or positional relationships indicated by orientation terms such as "front, back, top, bottom, left, right," "horizontal, vertical, vertical, horizontal," and "top, bottom" are normally based on the orientation shown in the drawings, solely to facilitate the description of the present utility model and to simplify the description. Unless otherwise stated, these terms do not imply that the described devices or components must have a specific orientation or arrangement, nor that they must be constructed or operated in a specific orientation. Therefore, these terms should not be understood as limiting the scope of protection of the utility model. The orientation terms "inside, outside" refer to the inner and outer contours of the respective component itself.

[0045] For ease of description, spatially relative terms such as "over," "above," "surface-side," or "on top" may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as illustrated in the drawing. It should be understood that spatially relative terms also encompass different orientations in use or operation that differ from the position illustrated in the drawing. For example, if a device is reversed in the drawing, a device described as being "over another device or structure" or "above another device or configuration" is considered to be positioned "below another device or configuration." Therefore, the exemplary term "over" can encompass both "below" and "below" orientations.The device can also be positioned in a different way (rotated by 90 degrees or in a different orientation), and the spatial relative description used here will be interpreted accordingly.

[0046] Furthermore, it should be noted that the use of the terms "first" and "second," etc., serves to distinguish components. Unless otherwise stated, these terms have no special meaning and should therefore not be understood as limiting the scope of protection of this utility model.

[0047] The above is only a preferred embodiment of the present utility model and is not intended to limit the utility model. Those skilled in the art will recognize that the present utility model may have various modifications and variations. All modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present utility model are to be included within the scope of protection of the present utility model. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] US 19278638

[0001]

Claims

[1] An oil outlet nozzle for oil drums, comprising: Fixed pipe, including oil inlet and oil outlet; And The closing mechanism, which is arranged at the oil inlet of the fixed pipe, and is provided at the bottom of the closing mechanism with a first sealing structure which is used to open and close the oil circuit channel of the oil inlet; And The oil outlet pipe which can be axially slidably inserted into the oil outlet port, the outer wall of which is provided with a second sealing structure which is used to seal the gap between the oil outlet pipe and the fixed pipe; And The linkage structure disposed between the oil outlet pipe and the locking mechanism; And Wherein the first sealing structure and the second sealing structure are physically separated from each other and operate independently of each other; And The linkage structure converts the axial displacement of the oil outlet pipe into an opening and closing movement of the locking mechanism. [2] The oil outlet nozzle for oil drums according to claim 1, characterized by that the closure structure has a sealing plate. [3] The oil outlet nozzle for oil drums according to claim 2, characterized by in that the first sealing element has an annular groove which is arranged in the outer side wall of the sealing plate, wherein a first sealing ring is inserted within the annular groove and an annular elevation is fixedly attached to the side of the fixed tube opposite the annular groove, and one side of the first sealing ring is in contact with the raised surface. [4] The oil outlet nozzle for oil drums according to claim 1, characterized bythat the second sealing element has an annular recess on the outer edge of the oil outlet pipe, wherein a second sealing ring is arranged inside the recess, and the second sealing ring has one side in contact with the outer surface of the fixed pipe. [5] The oil outlet nozzle for oil drums according to claim 3, characterized by in that the linking structure comprises at least one connecting plate which is fixedly mounted on the underside of the sealing plate, wherein an end of the connecting plate facing away from the sealing plate is connected to the upper side of the oil outlet pipe, wherein a limiting step is fixedly attached to the underside of the connecting plate facing the fixed pipe, to the upper side of which a first spring is fastened, which sits on the surface of the connecting plate and whose end facing away from the limiting step is connected to the underside of the elevation. [6] The oil outlet nozzle for oil drums according to claim 3, characterized by in that the linking structure comprises at least two mounting plates which are fixedly mounted on the inner wall of the oil outlet pipe, wherein one end of the plurality of mounting plates facing away from the oil outlet pipe is fixedly connected to a mounting cylinder, and the underside of the sealing plate is fixedly fastened to a connecting column, the other end of which is fixedly inserted into the mounting pipe, wherein a second spring is fixed to the upper side of the mounting plates, the other end of which is fixedly attached to the underside of the elevation. [7] The oil outlet nozzle for oil drums according to claim 1, characterized by that it further comprises an air pressure compensation device, the air pressure compensation device comprising: The air duct, one end of the air duct located inside the fixed tube is provided with an air outlet; And The air inlet, which is located at the bottom of the oil outlet pipe and is connected to the inside of the air duct. [8] The oil outlet nozzle for oil drums according to claim 1, characterized by that it further comprises a limiting mechanism, the limiting mechanism comprising: The sliding groove formed along the axial direction in the side wall of the fixed tube; And The fixing block, which is firmly connected to the outer wall of the oil outlet pipe and extends into the sliding groove; and the limit block, which is arranged at the lower end of the sliding groove to prevent the fixing block from falling out. [9] The oil outlet nozzle for oil drums according to claim 8, characterized bythat a sawtooth rail is attached to the side wall of the sliding groove and an elastic pawl is hinged to the underside of the fixing block; when the oil outlet pipe is pushed upward, the pawl slides along the sawtooth slope, and when the oil outlet pipe is pulled downward, the pawl clamps into the locking position of the sawtooth-shaped recess t, by pressing the end of the pawl, the engagement is released. [10] The oil outlet nozzle for oil drums according to claim 8, characterized by that the limitation mechanism further comprises: The limiting plate which is fixedly mounted on the outer wall of the oil outlet pipe; And The pressure plate, which is firmly mounted on top of the limit plate; And The limiting groove formed on the outer surface of the rigid tube.

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