Fully-sealed hydraulic oil tank

Abstract

Compared with a traditional oil tank, the full-sealed hydraulic oil tank can be kept in a relatively sealed state during use and oil injection, communication is achieved only when an insertion pipe is inserted into a liquid injection pipe in a sealed state, and oil injection operation is conducted at the position of the insertion pipe. Compared with an open structure of a traditional sealing plug or sealing cover, a long window period in a non-sealing state is reserved in the oil injection stage, even if a funnel insertion mode is adopted, the oil injection end is still in the non-sealing state in the funnel insertion and extraction stage, and the good sealing effect cannot be achieved.

Description

Technical Field

[0001] The utility model belongs to the field of hydraulic oil tanks, and in particular relates to a fully sealed hydraulic oil tank. Background Art

[0002] A hydraulic oil tank is a container used to store the oil required to ensure the operation of the hydraulic system. Depending on whether the oil level in the tank is connected to the atmosphere, the oil tank can be divided into two types: open type and closed type.

[0003] A closed hydraulic oil tank needs to be sealed during use and can be opened for oil filling. To achieve the above purpose, a traditional closed hydraulic oil tank is provided with an oil filling pipeline and sealed by using a sealing plug or a sealing cover. When filling the oil, the sealing plug is removed for oil filling, and then the plug is added for sealing after the oil filling.

[0004] A Chinese patent with authorization announcement number CN217976784U discloses a hydraulic oil tank sealing structure for a rock drilling trolley, which belongs to the field of hydraulic oil tanks and includes a hydraulic oil tank. An oil filling end is arranged at the upper part of the hydraulic oil tank near a corner on one side, and a sealing plug is threadedly installed at the oil filling end of the hydraulic oil tank. A combination device is arranged on the upper surface of the hydraulic oil tank on one side of the oil filling end. The combination device includes a supporting pad, an anti-fouling container, a height adjustment stand, a guide slider, a distance adjustment sleeve, a distance adjustment slide plate and a rotating structure. Through the provided combination device, the sealing plug is not completely separated from the hydraulic oil tank after being removed from the oil filling end, which can reduce the trouble of traditional sealing plugs falling during refueling. After the sealing plug is removed, the cover is closed in the anti-fouling container to achieve the purpose of clean placement, which not only reduces the trouble of residual oil on the surface of the sealing plug diffusing, but also reduces the possibility of contamination when the sealing plug is placed randomly in the traditional way.

[0005] The above technical solution has the following defects:

[0006] During the oil filling operation, although the sealing plug is placed to prevent it from falling and causing contamination, the oil filling end is still connected to the outside air. It may not cause a significant impact on the internal environment of the fuel tank when used in a more suitable environment. However, in dusty or thunderstorm weather, the open setting will cause rain or dust in the air to enter the interior of the fuel tank through the open oil filling end during oil filling. Utility Model Content

[0007] In view of the above defects, the utility model provides a fully sealed hydraulic oil tank, comprising a box body and a sealing plate fixed to the top by bolts, characterized in that: a liquid injection port and a placement port are opened on the top of the sealing plate, and a liquid injection pipe and a storage pipe are fixed inside the liquid injection port and the placement port respectively, and the liquid injection pipe is connected to the box body through an inner hole;

[0008] The input end of the injection pipe is hinged with two semicircular sealing covers for sealing the injection pipe through a spring pin I, a plurality of inner layer pads distributed at equal distances are fixed to the inner wall of the inner hole, an output head is also fixed at the bottom of the inner layer pad, and a thread layer II is also provided at the top of the inner ring of the injection pipe;

[0009] A storage cavity is provided inside the storage tube, a movable cover for sealing the storage cavity is hingedly connected to the top of the storage tube through a spring pin II, a thread layer I is provided on the inner circle of the storage cavity, a cannula matched with the output head is provided inside the storage cavity, the cannula is in the shape of an inverted truncated cone, and a thread is provided on the top of the outer surface of the cannula.

[0010] Furthermore, a semicircular sunken groove is provided at the center of the two sealing covers, and the inner circle of the sunken groove is an inclined surface adapted to the outer surface of the insert tube, and a circular groove connected to the inner hole is left in the middle of the two sunken grooves.

[0011] Through the above technical solution, when the cannula is inserted from the circular groove, the two can be automatically separated by moving away from each other, so as to facilitate the insertion of the cannula.

[0012] Furthermore, a plurality of the inner layer pads are fixed to the inner wall of the inner hole in a spiral shape, and the inner layer pads are semicircular or fan-shaped, and their radius value is not less than the radius value of the inner hole.

[0013] Through the above technical solution, a plurality of inner layer pads shield different ranges inside the inner hole, thereby achieving vertical sealing of the inner hole as a whole.

[0014] Furthermore, a baffle plate for sealing the inner hole is connected to the bottom end of the liquid injection tube through a hinge, and the baffle plate and the outer edge of the liquid injection tube are limited by a fixed limiting plate.

[0015] Through the above technical solution, when in normal use, the baffle will swing down due to its own gravity and will not affect the normal oil filling operation. However, when the box is turned upside down due to staff's mistake during transportation, the baffle can contact with the bottom end of the filling tube due to gravity to seal.

[0016] Furthermore, the four edges of the sealing plate are hinged with corresponding sealing side plates through spring pins III, and the sealing side plates are L-shaped.

[0017] Through the above technical solution, the box body and the sealing plate can be compressed to improve the sealing performance.

[0018] Furthermore, a sealing gasket is fixed to the bottom end of the sealing plate.

[0019] The above technical solution is used to increase the sealing effect.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] Compared with traditional oil tanks, it can maintain a relatively sealed state during use and when filling with oil. The connection is achieved by inserting the cannula into the inside of the filling tube in a sealed state, and the oil filling operation can be performed from the cannula. Compared with the open structure of traditional sealing plugs or sealing covers, there will be a long window period of non-sealed state during the oil filling stage. Even if the funnel insertion method is adopted, the oil filling end is still in a non-sealed state during the insertion and removal of the funnel, and a good sealing effect cannot be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an exploded schematic diagram of the structure of the utility model.

[0023] Figure 2 It is a top view of the utility model with the cover added in the unfolded state.

[0024] Figure 3 It is a cross-sectional view of the liquid injection tube of the utility model.

[0025] Figure 4 It is a schematic diagram of the bent liquid injection tube in the utility model.

[0026] Figure 5 It is a schematic diagram of an intubation tube adapted to a bent injection tube in the utility model.

[0027] In the figure: 1. box body; 2. sealing plate; 3. sealing gasket; 4. liquid filling port; 5. placement port; 61. liquid filling tube; 62. sealing cover; 63. recessed groove; 64. inner gasket; 65. output head; 66. baffle; 67. limit plate; 68. threaded layer II; 71. storage tube; 72. movable cover; 73. threaded layer I; 74. insertion tube; 8. sealing side panel. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings provide embodiments of the device. However, the device can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example 1

[0031] like Figure 1-3 As shown, this embodiment provides a fully sealed hydraulic oil tank, including a box body 1 and a sealing plate 2 fixed to the top by bolts. Specifically, the four edges of the sealing plate 2 are hinged with corresponding sealing side plates 8 through spring pins III, and the sealing side plates 8 are L-shaped. At the same time, a sealing gasket 3 is fixed to the bottom end of the sealing plate 2. When installing the seal, the sealing plate 2 is manually pressed down to deform the rubber sealing gasket 3, and then the sealing side plate 8 is rotated to make it contact with the outer edge of the box body 1 and limit the position, so as to achieve the effect of pressurizing and increasing the seal. The top of the sealing plate 2 is provided with a liquid injection port 4 and a placement port 5, and the insides of the liquid injection port 4 and the placement port 5 are respectively fixed with a liquid injection tube 61 and a storage tube 71, and the liquid injection tube 61 is connected to the box body 1 through the inner hole.

[0032] The input end of the injection tube 61 is hinged with two semicircular sealing covers 62 for sealing the injection tube 61 through a spring pin I. Specifically, a semicircular sunken groove 63 is provided in the center of the two sealing covers 62, and the inner circle of the sunken groove 63 is an inclined surface adapted to the outer surface of the insert tube 74. A circular groove connected to the inner hole is left in the middle of the two sunken grooves 63. Its function is that when the insert tube 74 is inserted from the circular groove, the two sealing covers 62 will move to the side away from each other through the inclined surface, thereby increasing the range of the circular groove, so that the insert tube 74 can be smoothly inserted, and the inner hole of the inner hole is smooth. The wall is fixed with a plurality of inner pads 64 distributed at equal distances, and an output head 65 is also fixed at the bottom of the inner pads 64. Specifically, the plurality of inner pads 64 are fixed to the inner wall of the inner hole in a spiral shape, and the inner pads are semicircular or fan-shaped, and the radius value thereof is not less than the radius value of the inner hole. The inner pads 64 can also be made of corrosion-resistant rubber material, and have a good rebound and reset effect, and shield different ranges inside the inner hole, thereby realizing the vertical sealing of the inner hole as a whole. When the cannula 74 is inserted, it is supported to the side close to the inner wall of the inner hole, and will not affect the insertion operation of the cannula 74.

[0033] A thread layer II68 is also provided at the top of the inner circle of the injection tube 61. The thread layer II68 is used to be threadedly fixed with the thread at the insertion tube 74 during the oil injection stage, so as to facilitate manual oil pouring.

[0034] It should be noted that the inner wall of the output head 65 should be fixed with an extrusion part for sealing. The material of the extrusion part can be corrosion-resistant silicone, airbag and other materials. A through hole is left in the middle. However, under normal conditions, the inner walls of the through hole are squeezed and contacted to achieve the sealing of the through hole. After the insertion of the insert 74, the through hole is expanded; after the oil injection is completed and the insert 74 is taken out, it is reset by the corrosion-resistant silicone and the rebound of the airbag itself, and then the through hole is sealed.

[0035] The bottom end of the injection tube 61 is also connected to a baffle 66 for sealing the inner hole through a hinge, and the baffle 66 and the outer edge of the injection tube 61 are limited by a fixed limit plate 67. When in normal use, the baffle 66 swings down due to its own gravity and will not affect the normal oil filling operation. During transportation, if the staff accidentally turns the box 1 upside down, the baffle 66 can contact with the bottom end of the injection tube 61 due to gravity for sealing. It should be noted that the angle between the bottom end of the injection tube 61 and the shielding surface of the baffle 66 should be between 60° and 75°, which will neither affect the oil filling work nor the subsequent sealing work by contacting with the bottom end of the injection tube 61 through gravity.

[0036] A storage cavity is provided inside the storage tube 71, and a movable cover 72 for sealing the storage cavity is hinged at the top of the storage tube 71 through a spring pin II, and is used to cover the insert 74 placed inside. A threaded layer I73 is provided on the inner circle of the storage cavity, and an insert 74 adapted to the output head 65 is provided inside the storage cavity. The insert 74 is in the shape of an inverted cone (for smoother insertion into the stretched inner pad 64 and the extrusion piece), and a thread is provided on the top of the outer surface of the insert 74, and when not in use, it can be threadedly fixed to the inside of the storage tube 71 (connected to the threaded layer I73).

[0037] Example 2

[0038] like Figure 4-5 As shown, when different equipment requires different oil injection angles, Example 1 is a vertical oil injection method, while this embodiment is suitable for horizontal oil injection. It should be noted that the inner pad 64, the output head 65 and the threaded layer II68 should be in a horizontal position, and a U-shaped guide plate can be added to the insert 74 to facilitate horizontal oil pouring, which is drained to the inside of the insert 74 through the guide plate to prevent spillage during the pouring process.

[0039] It should be noted that the structure described in the utility model can be implemented in a variety of different forms and is not limited to the described embodiments. Any equivalent transformations made by ordinary technicians in this field using the contents of the utility model specification and drawings, or directly or indirectly applied to other related technical fields, such as the loading and unloading of other items, are included in the protection scope of the utility model.

Claims

1. A fully sealed hydraulic oil tank, comprising a tank body and a sealing plate fixed to the top by bolts, characterized in that: The top of the sealing plate is provided with a liquid injection port and a placement port, and a liquid injection tube and a storage tube are fixed inside the liquid injection port and the placement port, respectively, and the liquid injection tube is connected with the box body through the inner hole; The input end of the injection pipe is hinged with two semicircular sealing covers for sealing the injection pipe through a spring pin I, a plurality of inner layer pads distributed at equal distances are fixed to the inner wall of the inner hole, an output head is also fixed at the bottom of the inner layer pad, and a thread layer II is also provided at the top of the inner ring of the injection pipe; A storage cavity is provided inside the storage tube, a movable cover for sealing the storage cavity is hingedly connected to the top of the storage tube through a spring pin II, a thread layer I is provided on the inner circle of the storage cavity, a cannula matched with the output head is provided inside the storage cavity, the cannula is in the shape of an inverted truncated cone, and a thread is provided on the top of the outer surface of the cannula.

2. A fully sealed hydraulic oil tank as claimed in claim 1, characterized in that: The centers of the two sealing covers are both provided with semicircular sunken grooves, and the inner circle of the sunken grooves is an inclined surface adapted to the outer surface of the insert tube, and a circular groove communicating with the inner hole is reserved in the middle of the two sunken grooves.

3. A fully sealed hydraulic oil tank as claimed in claim 1, characterized in that: A plurality of inner pads are fixed to the inner wall of the inner hole in a spiral shape, and the inner pads are semicircular or fan-shaped, and the radius value thereof is not less than the radius value of the inner hole.

4. A fully sealed hydraulic oil tank as claimed in claim 1, characterized in that: The bottom end of the liquid injection tube is connected with a baffle plate for sealing the inner hole through a hinge, and the baffle plate and the outer edge of the liquid injection tube are limited by a fixed limiting plate.

5. A fully sealed hydraulic oil tank as claimed in claim 1, characterized in that: The four edges of the sealing plate are hinged with corresponding sealing side plates through spring pins III, and the sealing side plates are L-shaped.

6. A fully sealed hydraulic oil tank as claimed in claim 1, characterized in that: A sealing gasket is fixed to the bottom end of the sealing plate.

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