Hydraulic oil tank capable of preventing air suction

Abstract

The utility model relates to the technical field of hydraulic oil tanks, in particular to an air suction prevention hydraulic oil tank which comprises a tank body, an oil return pipe inserted into the tank body is installed on one side of the tank body, an oil suction pipe inserted into the tank body is installed on the other side of the tank body, an air suction prevention device is arranged at an opening of the oil suction pipe, and the air suction prevention device comprises a sealing plate and a balance weight rod which are fixedly connected. The joint of the sealing plate and the balance weight rod is hinged to the oil suction pipe through a support. The sealing plate is used for sealing the opening of the oil suction pipe under the gravity action of the balance weight lever, and the problems that when the oil pump sucks air, a large amount of air is sucked to corrode elements in the oil pump, and the elements are in rotating contact to cause abrasion, so that the service life of the pump is greatly shortened are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil tanks, in particular to an anti-air suction 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. Every hydraulic system requires a hydraulic oil tank. The hydraulic oil tank not only stores oil, but also dissipates heat for the oil, precipitates impurities, and allows air in the oil to escape.

[0003] Hydraulic oil tanks are usually installed on large machinery, cars or aircraft. When the speed of machinery or cars changes during driving, the oil will flow to one end of the tank due to inertia. At this time, the oil suction pipe is easy to suck empty, and it will also suck empty when the oil volume is small. If the oil pump sucks empty, not only will a large amount of gas be sucked in to corrode the components inside, but also the components will be worn due to rotation contact, thus greatly reducing the service life of the pump. For this reason, we propose a hydraulic oil tank that prevents air suction. Utility Model Content

[0004] The utility model aims to provide a hydraulic oil tank which is anti-air suction, has the advantages of anti-air suction, and solves the problem that when the oil pump is air-sucked, not only a large amount of gas is sucked in to cause corrosion to the components inside, but also the components are caused to rotate and contact to cause wear, thereby greatly reducing the service life of the pump.

[0005] To achieve the above object, the utility model provides the following technical solutions: an anti-air suction hydraulic oil tank, comprising a box body, one side of the box body is equipped with an oil return pipe inserted into the box body, and the other side is equipped with an oil suction pipe inserted into the box body, an anti-air suction device is arranged at the opening of the oil suction pipe, and the anti-air suction device comprises a sealing plate and a counterweight rod that are fixedly connected, and the connection between the sealing plate and the counterweight rod is hinged to the oil suction pipe through a support;

[0006] The sealing plate is used to seal with the opening of the oil suction pipe under the action of the gravity of the counterweight rod. The counterweight rod is connected to the float by a connecting rope. The float is used to drive the counterweight rod to lift upward under the action of the buoyancy of the oil, thereby making the sealing plate and the opening of the oil suction pipe in an unsealed state.

[0007] Preferably, a sealing gasket is provided on the sealing plate at the opening corresponding to the oil suction pipe, and the sealing gasket is made of a flexible material.

[0008] Preferably, the connecting rope is connected to the end of the counterweight rod away from the sealing plate, and the floating ball is a hollow ball or a solid ball with a density less than that of the oil.

[0009] Preferably, the oil suction pipe opening is an inclined surface, and the support is installed on the sealing plate at a rotation angle greater than 90 degrees.

[0010] Preferably, a first baffle and a second baffle are provided inside the box body, and the first baffle and the second baffle are located between the oil return pipe and the oil suction pipe, and the first baffle and the second baffle are staggered and reserve an oil circulation passage.

[0011] Preferably, the top of the box body adopts a sealing structure, the bottom of the box body is a slope, and a drain valve is provided at the bottom of the slope.

[0012] Preferably, a cleaning port is provided on the side of the box body, and the cleaning port is provided with a sealing cover.

[0013] Preferably, an oil filter net for oil filling is arranged on the top of the box body, and a dust cover is arranged on the oil filter net.

[0014] Preferably, an air filter and a liquid level meter are also installed on the box.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model is provided with an anti-air suction device, which uses a float to monitor the oil level. When the liquid level is low, which may cause air suction, the float drops, and the sealing plate seals the oil suction pipe under the gravity of the counterweight rod, thereby preventing the oil pump from sucking air. When the oil is sufficient, the counterweight rod moves upward under the buoyancy of the float, and then uses the lever principle to drive the sealing plate to move downward, so that the oil suction pipe inlet is in an open state, which does not affect the normal operation of the oil pump.

[0017] 2. The utility model sets a first baffle and a second baffle, the function of which is to reduce the influence of inertia on the oil sloshing, and to reduce the oil flowing at one end of the oil tank as much as possible, causing the oil suction pipe at the other end to be sucked empty. At the same time, the baffles are arranged in a staggered manner, which does not affect the normal circulation of the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model anti-air suction device when in operation;

[0020] Figure 3 It is a top view of the partition of the utility model.

[0021] In the figure: 1. box body; 2. oil return pipe; 3. oil suction pipe; 4. sealing plate; 5. counterweight rod; 6. connecting rope; 7. float; 8. support; 9. sealing gasket; 10. first baffle; 11. second baffle; 12. drain valve; 13. cleaning port; 14. oil filter; 15. dust cover; 16. air filter; 17. liquid level meter. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-3 As shown, a hydraulic oil tank with air suction prevention includes a box body 1, one side of the box body 1 is equipped with an oil return pipe 2 inserted into the box body 1, and the other side is equipped with an oil suction pipe 3 inserted into the box body 1, and its characteristic is that an air suction prevention device is arranged at the opening of the oil suction pipe 3, and the air suction prevention device includes a sealing plate 4 and a counterweight rod 5 that are fixedly connected, and the connection between the sealing plate 4 and the counterweight rod 5 is hinged to the oil suction pipe 3 through a support 8; the hinged arrangement is to facilitate the rotation of the counterweight rod 5.

[0024] Or the counterweight rod 5 is used as a float 7, that is, when the oil level is higher than the counterweight rod 5, the counterweight rod 5 is lifted upward under the action of buoyancy, and the sealing plate 4 is opened, so that the oil suction pipe 3 can absorb oil normally. When the oil level is lower than the counterweight rod 5, the counterweight rod 5 moves downward under the action of gravity, closes the sealing plate 4, and the oil suction pipe 3 cannot absorb oil normally, thereby avoiding empty suction. The height of the counterweight rod 5 is set according to the opening height of the oil suction pipe 3. When the oil is about to be lower than the opening of the oil suction pipe 3, the gravity of the counterweight rod 5 is greater than the buoyancy.

[0025] The opening of the oil suction pipe 3 is an inclined surface, and the support 8 is installed at a rotation angle greater than 90 degrees on the sealing plate 4. The rotation angle is greater than 90 degrees, which can ensure that the opening of the sealing plate 4 is large enough to avoid the flow rate of the oil.

[0026] The sealing plate 4 is sealed with the opening of the oil suction pipe 3 under the gravity of the counterweight rod 5. The counterweight rod 5 is connected to the float 7 through the connecting rope 6. The float 7 is used to drive the counterweight rod 5 to lift upward under the action of the buoyancy of the oil, so that the opening of the sealing plate 4 and the oil suction pipe 3 is in a non-sealed state. The anti-air suction device uses the float 7 to monitor the liquid level of the oil. When the liquid level is low, which may cause air suction, the float 7 drops, and the sealing plate 4 seals the oil suction pipe 3 under the gravity of the counterweight rod 5, thereby preventing the oil pump from sucking air. When the oil is sufficient, the counterweight rod 5 moves upward under the buoyancy of the float 7, and then uses the lever principle to drive the sealing plate 4 to move downward, so that the inlet of the oil suction pipe 3 is in an open state, which does not affect the normal operation of the oil pump.

[0027] A sealing gasket 9 is arranged at the opening of the sealing plate 4 corresponding to the oil suction pipe 3, and the sealing gasket 9 is made of a flexible material. The flexible sealing gasket 9 is used to make the sealing better, and the sealing gasket 9 is combined with the suction force of the oil suction pipe 3 to achieve complete sealing.

[0028] The connecting rope 6 is connected to the end of the counterweight rod 5 away from the sealing plate 4, and the floating ball 7 is a hollow ball or a solid ball with a density less than that of the oil. The length of the connecting rope 6 can be set according to demand, and even if the floating ball 7 is below the oil level, its buoyancy is not affected.

[0029] The first baffle 10 and the second baffle 11 are arranged inside the box 1, and the first baffle 10 and the second baffle 11 are arranged between the oil return pipe 2 and the oil suction pipe 3. The first baffle 10 and the second baffle 11 are arranged in a staggered manner and reserve an oil circulation passage. The function of the baffle is to reduce the influence of inertia on the oil sloshing, and to reduce the oil flow at one end of the oil tank as much as possible, resulting in the oil suction pipe 3 at the other end being sucked empty. At the same time, the baffles are arranged in a staggered manner, which does not affect the normal circulation of the oil.

[0030] The top of the box body 1 adopts a sealed structure, the bottom of the box body 1 is a slope, and a drain valve 12 is provided at the bottom of the slope. A cleaning port 13 is provided on the side of the box body 1, and the cleaning port 13 is provided with a sealing cover. An oil filter 14 for oil filling is provided on the top of the box body 1, and a dust cover 15 is provided on the oil filter 14. A liquid level gauge 17 is also installed on the box body 1. The oil tank adopts a fully enclosed type, and a cleaning port 13 is opened from the side to avoid the previous oil tank from opening the top cover for cleaning. The disadvantage of this oil tank is that pollutants in the air and oil leaked from the system are often easily returned to the oil tank through the gap between the upper cover and the box body 1 due to the poor sealing of the upper cover, causing uninterrupted pollution. An air filter 16 and a liquid level gauge 17 are also installed on the box body 1. Since hydraulic oil always contains water, when the oil temperature is higher than a certain temperature, the water contained in the oil will evaporate into water vapor, and the air filter 16 will communicate with the inside of the oil tank with the atmosphere, thereby removing gas and avoiding malfunctions. The liquid level meter 17 is for conveniently observing the remaining amount of oil in the oil tank.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic oil tank for preventing air suction, comprising a box body (1), a return oil pipe (2) inserted into the box body (1) is installed on one side of the box body (1), and an oil suction pipe (3) inserted into the box body (1) is installed on the other side, characterized in that: An anti-air suction device is provided at the opening of the oil suction pipe (3), the anti-air suction device comprising a sealing plate (4) and a counterweight rod (5) which are fixedly connected, and the connection between the sealing plate (4) and the counterweight rod (5) is hinged to the oil suction pipe (3) via a support (8); The sealing plate (4) is used to seal with the opening of the oil suction pipe (3) under the action of the gravity of the counterweight rod (5); the counterweight rod (5) is connected to the float (7) via a connecting rope (6); the float (7) is used to drive the counterweight rod (5) to lift upward under the action of the buoyancy of the oil, thereby placing the sealing plate (4) and the opening of the oil suction pipe (3) in a non-sealed state.

2. The anti-air suction hydraulic oil tank according to claim 1, characterized in that: A sealing gasket (9) is arranged on the sealing plate (4) at the opening corresponding to the oil suction pipe (3), and the sealing gasket (9) is made of a flexible material.

3. The anti-air suction hydraulic oil tank according to claim 1, characterized in that: The connecting rope (6) is connected to the end of the counterweight rod (5) away from the sealing plate (4), and the floating ball (7) is a hollow ball or a solid ball with a density less than that of oil.

4. The anti-air suction hydraulic oil tank according to claim 1, characterized in that: The opening of the oil suction pipe (3) is an inclined surface, and the support (8) is installed on the sealing plate (4) at a rotation angle greater than 90 degrees.

5. The anti-air suction hydraulic oil tank according to claim 1, characterized in that: A first baffle (10) and a second baffle (11) are arranged inside the box body (1), and the first baffle (10) and the second baffle (11) are located between the oil return pipe (2) and the oil suction pipe (3), and the first baffle (10) and the second baffle (11) are arranged in a staggered manner and reserve an oil circulation passage.

6. The anti-air suction hydraulic oil tank according to claim 1, characterized in that: The top of the box body (1) adopts a sealing structure, the bottom of the box body (1) is a slope, and a sewage valve (12) is arranged at the bottom of the slope.

7. The anti-air suction hydraulic oil tank according to claim 1, characterized in that: A cleaning port (13) is provided on the side of the box body (1), and the cleaning port (13) is provided with a sealing cover.

8. The anti-air suction hydraulic oil tank according to claim 1, characterized in that: An oil filter (14) for oil injection is arranged on the top of the box body (1), and a dust cover (15) is arranged on the oil filter (14).

9. The anti-air suction hydraulic oil tank according to claim 1, characterized in that: An air filter (16) and a liquid level meter (17) are also installed on the box body (1).

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