Air filtering device of hydraulic station oil tank

Abstract

The utility model discloses an air filtering device of a hydraulic station oil tank, and relates to the technical field of hydraulic station air filtering equipment. The air filtering device of the hydraulic station oil tank comprises a protective shell, a sealing cover is arranged at the top opening end of the protective shell, the middles of the four side walls of the sealing cover are connected with the middles of the four side walls of the protective shell through hasps, an air inlet pipe is connected to the top surface of the sealing cover in an embedded mode, and an air outlet pipe is connected to the bottom surface of the protective shell in an embedded mode. The filter cloth bag is arranged in an inner cavity of the protective shell, and the filter cloth bag is used for filtering air flowing through the protective shell; according to the hydraulic station oil tank air filtering device, air sucked into the hydraulic station oil tank can be filtered, the amount of air entering the hydraulic station oil tank can be guaranteed, the air filtering efficiency is improved, and the problem that the hydraulic station oil tank is damaged due to unbalanced pressure in the oil tank is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic station air filtering equipment, in particular to an air filtering device for an oil tank of a hydraulic station. Background Art

[0002] The air filter device of the hydraulic station oil tank is usually called the oil tank breather or oil tank exhauster. It is a device used to control the air flow inside the oil tank and maintain the pressure balance inside the oil tank. The main function of the oil tank breather is to prevent the formation of vacuum or excessive pressure inside the oil tank to ensure that the oil can flow normally and prevent oil leakage. The air filter device of the hydraulic station oil tank is also to protect the hydraulic system from the invasion of external dust, particles and other contaminants. The oil in the hydraulic system is very clean, and the entry of any impurities may cause system failure or damage.

[0003] When the existing air filter device of the hydraulic station oil tank is in use, the speed of air entering the hydraulic station oil tank is slow in a short period of time, which can easily cause pressure imbalance in the oil tank, and then easily cause damage to the hydraulic station oil tank. Therefore, we propose an air filter device for the hydraulic station oil tank to solve the above-mentioned problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an air filtering device for a hydraulic station oil tank, which solves the problem that the air speed entering the hydraulic station oil tank is slow in a short period of time, which easily causes pressure imbalance in the oil tank and further easily leads to damage to the hydraulic station oil tank.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: an air filter device for a hydraulic station oil tank, comprising a protective shell, a sealing cover is arranged at the top open end of the protective shell, the middle parts of the four side walls of the sealing cover are connected to the middle parts of the four side walls of the protective shell through buckles, an air inlet pipe is embedded and connected to the top surface of the sealing cover, and an air outlet pipe is embedded and connected to the bottom surface of the protective shell, and also includes:

[0006] A filter bag, the filter bag is arranged in the inner cavity of the protective shell, and the filter bag is used to filter the air flowing through the protective shell;

[0007] A positioning assembly, wherein the positioning assembly is disposed on the bottom surface of the sealing cover, and the opening end of the filter bag is connected to the bottom end of the positioning assembly, and the positioning assembly is used to seal the opening end of the filter bag;

[0008] A supporting assembly, the supporting assembly is disposed in the inner cavity of the filter bag, and the supporting assembly is used to support the filter bag; and

[0009] An internal threaded hole is provided on the bottom surface of the sealing cover, and an inner cavity of the internal threaded hole is rotatably connected to the top of the supporting assembly, and the internal threaded hole is used for installing the supporting assembly.

[0010] Preferably, the positioning assembly includes a positioning tube disposed on the bottom surface of the sealing cover, the open end of the filter bag is plugged into the outside of the positioning tube, and the positioning tube is connected to the filter bag via a clamp.

[0011] Preferably, a groove ring is opened in the middle of the positioning tube, and a sealing rubber ring is arranged in the inner cavity of the groove ring, and the clamp is located outside the sealing rubber ring.

[0012] Preferably, the supporting assembly comprises an externally threaded tube rotatably mounted in the inner cavity of the internally threaded hole, the inner cavity of the externally threaded tube is ringed with a plurality of support rods, and a support plate is fixedly disposed at the bottom end of each of the support rods.

[0013] Preferably, the supporting assembly further comprises a rubber strip, a plurality of the rubber strips are provided, and the plurality of the rubber strips are vertically distributed on the outer wall surface of the abutment plate, and the rubber strips are used to reduce the wear of the abutment plate on the filter bag.

[0014] Preferably, a plurality of ventilation holes are opened on the surface of the support plate, and the ventilation holes are distributed on both sides of the rubber strip, and the ventilation holes are used to facilitate air to pass through the support plate.

[0015] Preferably, it further comprises a lifting component, wherein the lifting component is arranged in the middle of the outer wall of the protective shell;

[0016] The lifting assembly comprises a column, a fixing plate is fixedly arranged on the top of the column, and a side wall of the fixing plate is connected to the outer wall surface of the protective shell, and a bottom plate is fixedly arranged on the bottom end of the column. Beneficial Effects

[0017] The utility model provides an air filter device for a hydraulic station oil tank. Compared with the prior art, it has the following beneficial effects:

[0018] When the air filter device of the hydraulic station oil tank needs to be used, the staff first rotates the support assembly to install it at the internal threaded hole on the sealing cover, so as to achieve the purpose of installing and fixing the support assembly, and then sleeves the filter bag on the support assembly, and makes the open end of the filter bag installed on the positioning assembly, so that the air entering from the air inlet pipe can directly enter the filter bag, and then covers the sealing cover, and fastens the four buckles, and by fastening the buckles, the protective shell and the sealing cover can be sealed, and then the outlet pipe on the protective shell is installed on the air inlet pipe of the hydraulic station oil tank;

[0019] When the hydraulic oil in the hydraulic station tank is extracted, the hydraulic station tank is in a negative pressure state, so the hydraulic station tank can suck the outside air into the protective shell through the air intake pipe. Since the positioning assembly is fixed to the bottom surface of the sealing cover, and the open end of the filter bag is connected to the bottom end of the positioning assembly, and the supporting assembly is located in the inner cavity of the filter bag, the inhaled outside air can directly enter the filter bag supported by the supporting assembly, so that the air entering the hydraulic station tank can be filtered to prevent external dirt from entering the hydraulic station tank, ensuring the cleanliness of the hydraulic oil. At the same time, the filter bag supported by the supporting assembly can prevent it from stacking when filtering the air, thereby ensuring the area of ​​the filter bag to the air, improving the efficiency of air filtration, and preventing the hydraulic station tank from being damaged due to pressure imbalance in the tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0022] Figure 3 This is a schematic diagram of the exploded structure of the positioning component of the utility model.

[0023] Figure 4 This is a schematic diagram of the support component structure of the utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the lifting component of the utility model.

[0025] In the figure: 1. Protective shell; 2. Sealing cover; 3. Buckle; 4. Inlet pipe; 5. Exhaust pipe; 6. Filter bag; 7. Positioning assembly; 71. Positioning tube; 72. Groove ring; 73. Sealing rubber ring; 74. Hoop; 8. Support assembly; 81. Externally threaded tube; 82. Support rod; 83. Abutment plate; 84. Rubber strip; 85. Ventilation hole; 9. Internally threaded hole; 10. Support assembly; 101. Post; 102. Fixing plate; 103. Bottom plate. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-2The utility model provides a technical solution: an air filter device for a hydraulic station oil tank, comprising a protective shell 1, a sealing cover 2 is arranged at the top open end of the protective shell 1, the middle parts of the four side walls of the sealing cover 2 are connected to the middle parts of the four side walls of the protective shell 1 through buckles 3, an air inlet pipe 4 is inlaid and connected to the top surface of the sealing cover 2, and an air outlet pipe 5 is inlaid and connected to the bottom surface of the protective shell 1, and also comprises: a filter bag 6, the filter bag 6 is arranged in the inner cavity of the protective shell 1, and the filter bag 6 is used to filter the air flowing through the protective shell 1; a positioning component 7, the positioning component 7 is arranged on the bottom surface of the sealing cover 2, and the open end of the filter bag 6 is connected to the bottom end of the positioning component 7, and the positioning component 7 is used to seal the open end of the filter bag 6; a supporting component 8, the supporting component 8 is arranged in the inner cavity of the filter bag 6, and the supporting component 8 is used to support the filter bag 6; and an internal threaded hole 9, the internal threaded hole 9 is opened on the bottom surface of the sealing cover 2, and the inner cavity of the internal threaded hole 9 is rotatably connected to the top of the supporting component 8, and the internal threaded hole 9 is used to install the supporting component 8;

[0028] When the equipment needs to be used, the staff first rotates the support component 8 to install it on the internal threaded hole 9 on the sealing cover 2, so as to achieve the purpose of installing and fixing the support component 8, and then sleeves the filter bag 6 on the support component 8, and makes the open end of the filter bag 6 installed on the positioning component 7, so that the air entering from the intake pipe 4 can directly enter the filter bag 6, then cover the sealing cover 2, and fasten the four buckles 3. By fastening the buckles 3, the protective shell 1 and the sealing cover 2 can be sealed, and then the outlet pipe 5 on the protective shell 1 is installed on the air inlet pipe of the hydraulic station tank. When the hydraulic oil in the hydraulic station tank is extracted, the hydraulic station tank is in a negative pressure state, so the hydraulic station tank can pass The air intake pipe 4 draws the outside air into the protective shell 1. Since the positioning component 7 is fixed on the bottom surface of the sealing cover 2, and the open end of the filter bag 6 is connected to the bottom end of the positioning component 7, and the supporting component 8 is located in the inner cavity of the filter bag 6, the inhaled outside air can directly enter the filter bag 6 supported by the supporting component 8, so that the air entering the hydraulic station tank can be filtered to prevent external dirt from entering the hydraulic station tank, thereby ensuring the cleanliness of the hydraulic oil. At the same time, the filter bag 6 supported by the supporting component 8 can prevent it from stacking when filtering the air, thereby ensuring the area of ​​the filter bag 6 to the air, improving the efficiency of air filtration, and preventing the hydraulic station tank from being damaged due to pressure imbalance in the tank.

[0029] See also Figure 2 , Figure 3The positioning assembly 7 includes a positioning tube 71 arranged on the bottom surface of the sealing cover 2, the opening end of the filter bag 6 is plugged into the outside of the positioning tube 71, and the positioning tube 71 is connected to the filter bag 6 through a clamp 74, a groove ring 72 is opened in the middle of the positioning tube 71, and a sealing rubber ring 73 is arranged in the inner cavity of the groove ring 72, and the clamp 74 is located on the outside of the sealing rubber ring 73;

[0030] The positioning tube 71 in the positioning assembly 7 can be fixed to the bottom surface of the sealing cover 2 and provide a space for the groove ring 72. Then, the sealing rubber ring 73 can be installed through the groove ring 72. When the filter bag 6 needs to be fixed, the staff first sleeves the open end of the filter bag 6 on the positioning tube 71, and then sleeves it on the outside of the filter bag 6 through the clamping hoop 74. By tightening the clamping hoop 74, the filter bag 6 can be fastened to the positioning tube 71. Since the clamping hoop 74 is located on the outside of the sealing rubber ring 73, the sealing performance of the connection between the filter bag 6 and the positioning tube 71 after installation can be improved.

[0031] See also Figure 2-Figure 3 The supporting assembly 8 includes an externally threaded tube 81 rotatably mounted in the inner cavity of the internally threaded hole 9, a plurality of support rods 82 are arranged in the inner cavity of the externally threaded tube 81, and a support plate 83 is fixedly arranged at the bottom end of each support rod 82. The supporting assembly 8 also includes a rubber strip 84, a plurality of rubber strips 84 are arranged, and the plurality of rubber strips 84 are vertically distributed on the outer wall surface of the support plate 83, and the rubber strip 84 is used to reduce the wear of the support plate 83 on the filter bag 6. The surface of the support plate 83 is provided with a plurality of ventilation holes 85, and the ventilation holes 85 are distributed on both sides of the rubber strip 84, and the ventilation holes 85 are used to facilitate air to pass through the support plate 83;

[0032] Through the external threaded tube 81 in the supporting assembly 8, it can be rotatably installed on the internal threaded hole 9, and the corresponding support plate 83 can be installed through multiple support rods 82. The filter bag 6 can be supported by the support plate 83, so that the filter bag 6 can be in an open state, thereby ensuring the area of ​​the filter bag 6 for air to pass through, improving the efficiency of air filtration, and preventing the hydraulic station tank from being damaged due to pressure imbalance in the tank. At the same time, through the multiple rubber strips 84 on the support plate 83, the wear of the filter bag 6 by the support plate 83 can be reduced, thereby improving the service life and safety of the filter bag 6, and through the multiple ventilation holes 85 on the support plate 83, it is convenient for air to pass through the support plate 83.

[0033] See also Figure 1 , Figure 5 , further comprising a lifting assembly 10, the lifting assembly 10 being arranged at the middle of the outer wall of the protective shell 1; the lifting assembly 10 comprising a column 101, a fixing plate 102 being fixedly arranged at the top of the column 101, and a side wall of the fixing plate 102 being connected to the outer wall surface of the protective shell 1, and a bottom plate 103 being fixedly arranged at the bottom end of the column 101;

[0034] By lifting the column 101 in the assembly 10, it can be installed on the outer wall of the protective shell 1 through the fixing plate 102, and can also be fixed to a designated position of the hydraulic station tank through the bottom plate 103, thereby improving the stability of the air filter device.

[0035] During operation, when the equipment needs to be used, the staff first rotates the support component 8 to install it at the internal threaded hole 9 on the sealing cover 2, so as to achieve the purpose of installing and fixing the support component 8, and then sleeves the filter bag 6 on the support component 8, and makes the open end of the filter bag 6 installed on the positioning component 7, so that the air entering from the air inlet pipe 4 can directly enter the filter bag 6, and then covers the sealing cover 2, and fastens the four buckles 3. By fastening the buckles 3, the protective shell 1 and the sealing cover 2 can be sealed, and then the outlet pipe 5 on the protective shell 1 is installed on the air inlet pipe of the hydraulic station tank. When the hydraulic oil in the hydraulic station tank is extracted, the hydraulic station tank is in a negative pressure state, so the hydraulic station tank can The outside air is sucked into the protective shell 1 through the air intake pipe 4. Since the positioning component 7 is fixed on the bottom surface of the sealing cover 2, and the open end of the filter bag 6 is connected to the bottom end of the positioning component 7, and the supporting component 8 is located in the inner cavity of the filter bag 6, the inhaled outside air can directly enter the filter bag 6 supported by the supporting component 8, so that the air entering the hydraulic station tank can be filtered to prevent external dirt from entering the hydraulic station tank, thereby ensuring the cleanliness of the hydraulic oil. At the same time, the filter bag 6 supported by the supporting component 8 can prevent it from stacking when filtering the air, thereby ensuring the area of ​​the filter bag 6 to the air, improving the efficiency of air filtration, and preventing the hydraulic station tank from being damaged due to pressure imbalance in the tank.

[0036] The positioning tube 71 in the positioning assembly 7 can be fixed to the bottom surface of the sealing cover 2 and provide a space for the groove ring 72. Then, the sealing rubber ring 73 can be installed through the groove ring 72. When the filter bag 6 needs to be fixed, the staff first sleeves the open end of the filter bag 6 on the positioning tube 71, and then sleeves it on the outside of the filter bag 6 through the clamping hoop 74. By tightening the clamping hoop 74, the filter bag 6 can be fastened to the positioning tube 71. Since the clamping hoop 74 is located on the outside of the sealing rubber ring 73, the sealing performance of the connection between the filter bag 6 and the positioning tube 71 after installation can be improved.

[0037] Through the external threaded tube 81 in the supporting assembly 8, it can be rotatably installed on the internal threaded hole 9, and the corresponding support plate 83 can be installed through multiple support rods 82. The filter bag 6 can be supported by the support plate 83, so that the filter bag 6 can be in an open state, thereby ensuring the area of ​​the filter bag 6 for air to pass through, improving the efficiency of air filtration, and preventing the hydraulic station tank from being damaged due to pressure imbalance in the tank. At the same time, through the multiple rubber strips 84 on the support plate 83, the wear of the filter bag 6 by the support plate 83 can be reduced, thereby improving the service life and safety of the filter bag 6, and through the multiple ventilation holes 85 on the support plate 83, it is convenient for air to pass through the support plate 83.

[0038] By lifting the column 101 in the assembly 10, it can be installed on the outer wall of the protective shell 1 through the fixing plate 102, and can also be fixed to a designated position of the hydraulic station tank through the bottom plate 103, thereby improving the stability of the air filter device.

[0039] In summary, the device can not only filter the air sucked into the hydraulic station tank, but also ensure the amount of air entering the hydraulic station tank, thereby improving the efficiency of air filtration and preventing damage to the hydraulic station tank caused by pressure imbalance in the tank.

[0040] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An air filter device for a hydraulic station oil tank, comprising a protective shell (1), a sealing cover (2) being arranged at the top open end of the protective shell (1), the middle parts of the four side walls of the sealing cover (2) being connected to the middle parts of the four side walls of the protective shell (1) through buckles (3), an air inlet pipe (4) being inlaid and connected to the top surface of the sealing cover (2), and an air outlet pipe (5) being inlaid and connected to the bottom surface of the protective shell (1), characterized in that: Also includes: A filter bag (6), the filter bag (6) being arranged in the inner cavity of the protective shell (1), the filter bag (6) being used to filter air flowing through the protective shell (1); a positioning component (7), the positioning component (7) being arranged on the bottom surface of the sealing cover (2), and the opening end of the filter cloth bag (6) being connected to the bottom end of the positioning component (7), and the positioning component (7) being used to seal the opening end of the filter cloth bag (6); A supporting assembly (8), the supporting assembly (8) being arranged in the inner cavity of the filter cloth bag (6), the supporting assembly (8) being used to support the filter cloth bag (6); and An internal threaded hole (9), the internal threaded hole (9) is opened on the bottom surface of the sealing cover (2), and the inner cavity of the internal threaded hole (9) is rotatably connected to the top end of the supporting component (8), and the internal threaded hole (9) is used to install the supporting component (8).

2. The air filter device for a hydraulic station oil tank according to claim 1, characterized in that: The positioning assembly (7) comprises a positioning tube (71) arranged on the bottom surface of the sealing cover (2); the open end of the filter bag (6) is plugged into the outside of the positioning tube (71), and the positioning tube (71) is connected to the filter bag (6) via a clamp (74).

3. The air filter device for a hydraulic station oil tank according to claim 2, characterized in that: A groove ring (72) is provided in the middle of the positioning tube (71), and a sealing rubber ring (73) is provided in the inner cavity of the groove ring (72), and the clamp (74) is located outside the sealing rubber ring (73).

4. The air filter device for a hydraulic station oil tank according to claim 1, characterized in that: The support assembly (8) comprises an externally threaded tube (81) rotatably mounted in the inner cavity of the internally threaded hole (9), a plurality of support rods (82) are arranged around the inner cavity of the externally threaded tube (81), and a support plate (83) is fixedly arranged at the bottom end of each support rod (82).

5. The air filter device for the oil tank of a hydraulic station according to claim 4, characterized in that: The supporting assembly (8) further comprises a rubber strip (84), a plurality of the rubber strips (84) being provided, and the plurality of the rubber strips (84) being vertically distributed on the outer wall surface of the abutment plate (83), and the rubber strips (84) being used to reduce the wear of the abutment plate (83) on the filter bag (6).

6. The air filter device for the oil tank of a hydraulic station according to claim 5, characterized in that: The surface of the resisting plate (83) is provided with a plurality of ventilation holes (85), the ventilation holes (85) being distributed on both sides of the rubber strip (84), and the ventilation holes (85) are used to facilitate air to pass through the resisting plate (83).

7. The air filter device for a hydraulic station oil tank according to claim 1, characterized in that: It also includes a lifting component (10), wherein the lifting component (10) is arranged in the middle of the outer wall of the protective shell (1); The holding assembly (10) comprises a column (101), a fixing plate (102) is fixedly arranged at the top end of the column (101), and a side wall of the fixing plate (102) is connected to the outer wall surface of the protective shell (1), and a bottom plate (103) is fixedly arranged at the bottom end of the column (101).

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