Pressure balance breather valve for oil storage tank

Abstract

The utility model relates to a pressure balance breather valve for an oil storage tank, which comprises an oil storage tank body, the top of the oil storage tank body is connected with a pressure balance breather valve body, the surface of the pressure balance breather valve body is fixedly connected with a breather pipe, the bottom of the breather pipe is fixedly connected with a limit frame, and the breather pipe is communicated with the limit frame. The first filter plate gets rid of limitation by outwards moving the U-shaped clamping frame, then a clamping groove in the top of the first filter plate is buckled to move upwards, so that the first filter plate is quickly and effectively moved out, and meanwhile, the first filter plate can be quickly and effectively moved out due to mutual restriction between a clamping strip at the bottom of the first filter plate and a clamping groove in the top of the second filter plate; and the second filter plate moves upwards to reach the interior of the ventilation pipe, then the U-shaped clamping frame is loosened to limit the second filter plate, seamless connection replacement of the filter plates is effectively achieved, and the possibility that external dust and foreign matter enter the pressure balance breather valve body and the oil storage tank body through the ventilation pipe is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pressure balance breather valve technology, and in particular to a pressure balance breather valve for oil storage tanks. Background Technology

[0002] A pressure-balanced breather valve, or simply a breather valve, is a type of valve that ensures the storage tank is isolated from the atmosphere within a certain pressure range, while allowing it to communicate with the atmosphere when the pressure exceeds or falls below this range. Its function is to prevent damage to the storage tank due to overpressure or vacuum, and to reduce evaporation losses of the stored liquid.

[0003] Patent CN220688137U discloses a pressure-balanced breather valve for oil storage tanks, comprising a valve body and a valve core. The valve core is located at the center of the valve body and is connected to the valve body via a connecting pipe extending to the outside of the valve body. Four sliding rods pass through the valve core. The top of the valve core is connected to an intake valve disc, which is also connected to the sliding rods. The bottom of the valve core is connected to an exhalation valve disc, which is also connected to the sliding rods. A filter plate is mounted on the connecting pipe, and a cover plate is provided at the top of the filter plate. This pressure-balanced breather valve for oil storage tanks allows operators to easily replace the filter plate by simply removing the cover plate and sliding the filter plate out of the groove. This convenient and quick replacement process improves operator efficiency.

[0004] However, the aforementioned pressure-balancing breather valve for oil storage tanks still has the following shortcomings:

[0005] When the filter plate is replaced, the connecting pipe of the above device is in a state of temporary complete openness. External dust and foreign objects can easily enter the breather valve through the completely open connecting pipe and then enter the tank through the breather valve, which will affect the quality of the oil. In view of this, we propose a pressure balance breather valve for oil storage tanks. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a pressure balance breather valve for oil storage tanks. This solves the technical problem that when the current device is replacing the filter plate, the connecting pipe is in a state of temporary complete openness, and external dust and foreign objects can easily enter the breather valve through the completely open connecting pipe and then enter the tank through the breather valve, affecting the quality of the oil.

[0007] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a pressure-balanced breather valve for an oil storage tank is designed, including an oil storage tank body, a pressure-balanced breather valve body connected to the top of the oil storage tank body, a vent pipe fixed to the surface of the pressure-balanced breather valve body, a limit frame fixed to the bottom of the vent pipe, the vent pipe and the limit frame being connected, a sealing plate being snapped into one side of the limit frame, a pull handle being fixed to the surface of the sealing plate, a filter assembly being snapped into the vent pipe and the limit frame, and a set of limit mechanisms being symmetrically arranged on both sides of the vent pipe.

[0008] Preferably, the filter assembly includes a first filter plate, which is snapped into the air duct, and a second filter plate is attached to the lower end of the first filter plate. The top of both the first and second filter plates is provided with a slot, and the bottom of both the first and second filter plates is provided with a retaining strip. Limiting grooves are provided on both sides of the first and second filter plates.

[0009] Preferably, the first filter plate and the second filter plate have the same shape and structure, and the bottom strip of the first filter plate is matched and engaged in the top slot of the second filter plate.

[0010] Preferably, the limiting mechanism includes a cylindrical frame, a set of cylindrical frames being symmetrically fixed to one side of the vent pipe, a U-shaped bracket penetrating inside the set of cylindrical frames, a set of limiting ring plates being symmetrically fixedly sleeved on the surface of the U-shaped bracket, and a spring being connected to the surface of the limiting ring plates.

[0011] Preferably, the end of the U-shaped bracket passes through the side of the vent pipe and is matched and engaged in the limiting groove.

[0012] Preferably, the U-shaped card holder is formed into an elastic structure by a limiting ring plate, a spring, and a cylindrical frame, with the outer wall of the limiting ring plate fitting against the inner wall of the cylindrical frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses an outward-moving U-shaped bracket to free the first filter plate from its constraints. Then, it fastens the top slot of the first filter plate and moves it upward, thereby quickly and effectively removing the first filter plate. At the same time, due to the mutual restraint between the bottom clip of the first filter plate and the top slot of the second filter plate, the second filter plate moves upward to the inside of the vent pipe. Then, the U-shaped bracket is released to limit the second filter plate, effectively achieving seamless replacement of the filter plates and reducing the possibility of external dust and foreign objects entering the pressure balance breather valve body and the oil storage tank body through the vent pipe.

[0015] 2. In this utility model, pulling the U-shaped bracket outward causes the end of the U-shaped bracket to disengage from the side limiting groove of the first filter plate. At this time, the first filter plate can move upward without restriction. When the second filter plate moves upward with the first filter plate and reaches the initial position of the first filter plate, the U-shaped bracket is released. Under the influence of the spring rebound force, the end of the U-shaped bracket pops out and effectively engages in the side limiting groove of the second filter plate, thereby limiting the second filter plate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial structural diagram of the present invention.

[0018] Figure 3 This is a partial structural diagram of the present invention from another perspective;

[0019] Figure 4 This is a partial cross-sectional structural diagram of the present invention;

[0020] In the diagram: 1. Oil storage tank body; 2. Pressure balance breather valve body; 3. Vent pipe; 4. Limiting bracket; 5. Sealing plate; 6. Pull handle; 7. Filter assembly; 8. Limiting mechanism;

[0021] 701. First filter plate; 702. Second filter plate; 703. Slot; 704. Locking strip; 705. Limiting slot;

[0022] 801. Cylindrical frame; 802. U-shaped clamp; 803. Limiting ring plate; 804. Spring. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] A pressure-balanced breather valve for oil storage tanks, see [link / reference] Figures 1 to 4 The system includes an oil storage tank body 1, a pressure-balanced breather valve body 2 connected to the top of the oil storage tank body 1, a vent pipe 3 fixed to the surface of the pressure-balanced breather valve body 2, a limit frame 4 fixed to the bottom of the vent pipe 3, the vent pipe 3 and the limit frame 4 being connected, a sealing plate 5 being snapped into one side of the limit frame 4, a pull handle 6 fixed to the surface of the sealing plate 5, a filter assembly 7 being snapped into the vent pipe 3 and the limit frame 4, and a set of limit mechanisms 8 being symmetrically arranged on both sides of the vent pipe 3.

[0025] It is worth noting that the filter assembly 7 includes a first filter plate 701, which is snapped into the air pipe 3. A second filter plate 702 is attached to the lower end of the first filter plate 701. The top of both the first filter plate 701 and the second filter plate 702 is provided with a slot 703, and the bottom of both the first filter plate 701 and the second filter plate 702 is fixed with a retaining strip 704. The first filter plate 701 and the second filter plate 702 have the same shape and structure. The retaining strip 704 at the bottom of the first filter plate 701 is matched and snapped into the slot 703 at the top of the second filter plate 702. Limiting grooves 705 are provided on both sides of the first filter plate 701 and the second filter plate 702. This utility model allows the first filter plate 701 to be freed from its restriction by moving the U-shaped bracket 802 outward. Then, it moves the first filter plate 701 upward by locking the top slot 703 of the first filter plate 701, thereby quickly and effectively removing the first filter plate 701. At the same time, due to the mutual restraint between the bottom locking strip 704 of the first filter plate 701 and the top slot 703 of the second filter plate 702, the second filter plate 702 moves upward to the inside of the vent pipe 3. Then, the U-shaped bracket 802 is released to limit the second filter plate 702, effectively realizing the seamless connection and replacement of the filter plates, reducing the possibility of external dust and foreign objects entering the pressure balance breather valve body 2 and the oil storage tank body 1 through the vent pipe 3.

[0026] It is worth noting that the limiting mechanism 8 includes a cylindrical frame 801. A set of cylindrical frames 801 are symmetrically fixed on one side of the vent pipe 3. A U-shaped bracket 802 passes through the inside of the set of cylindrical frames 801. The end of the U-shaped bracket 802 passes through the side of the vent pipe 3 and is matched and engaged in the limiting groove 705. A set of limiting ring plates 803 are symmetrically fixedly sleeved on the surface of the U-shaped bracket 802. A spring 804 is connected to the surface of the limiting ring plate 803. Furthermore, the U-shaped bracket 802 forms an elastic structure with the cylindrical frame 801 through the limiting ring plate 803 and the spring 804. The outer wall of the limiting ring plate 803 is in contact with the inner wall of the cylindrical frame 801. In this invention, pulling the U-shaped bracket 802 outward causes the end of the U-shaped bracket 802 to disengage from the side limiting groove 705 of the first filter plate 701. At this time, the first filter plate 701 is unrestricted and can move upward. When the second filter plate 702 moves upward with the first filter plate 701 and reaches the initial position of the first filter plate 701, the U-shaped bracket 802 is released. Under the influence of the rebound force of the spring 804, the end of the U-shaped bracket 802 pops out and effectively engages in the side limiting groove 705 of the second filter plate 702, thereby limiting the second filter plate 702.

[0027] Working principle: When replacing the filter plate, pull the U-shaped bracket 802 outward so that the end of the U-shaped bracket 802 disengages from the side limiting groove 705 of the first filter plate 701. At this time, the first filter plate 701 can move upward without restriction. When the second filter plate 702 moves upward with the first filter plate 701 and reaches the initial position of the first filter plate 701, release the U-shaped bracket 802. Under the influence of the rebound force of the spring 804, the end of the U-shaped bracket 802 pops out and engages in the side limiting groove 705 of the second filter plate 702, quickly limiting the second filter plate 702 and achieving seamless connection of the filter plates. Replace the filter plate to reduce the possibility of external dust and foreign objects entering the pressure balance breather valve body 2 and the oil storage tank body 1 through the vent pipe 3. Then, move the first filter plate 701 horizontally to separate it from the second filter plate 702. After cleaning the first filter plate 701, place the first filter plate 701 inside the limiting frame 4. At the same time, the top slot 703 of the first filter plate 701 is locked to the outside of the bottom slot strip 704 of the second filter plate 702 to facilitate the next restraint movement. Then, the opening of the limiting frame 4 is blocked by the sealing plate 5 to protect the unused filter plate.

[0028] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A pressure balanced breather valve for a petroleum storage tank comprising a petroleum storage tank body (1), characterized in that, The petroleum storage tank body (1) top is connected with pressure balance breathing valve body (2), the surface of pressure balance breathing valve body (2) is fixed with vent pipe (3), the bottom of vent pipe (3) is fixed with limiting frame (4), vent pipe (3) and limiting frame (4) are connected, the inside of one side of limiting frame (4) is clamped with sealing plate (5), the surface of sealing plate (5) is fixed with pull handle (6), the inside of vent pipe (3) and limiting frame (4) are clamped with filter assembly (7), one side of vent pipe (3) is provided with a group of limiting mechanisms (8).

2. A pressure balanced breather valve for use in a petroleum storage tank as defined in claim 1, wherein, The filter assembly (7) includes a first filter plate (701), the first filter plate (701) is clamped in the inside of the vent pipe (3), the first filter plate (701) is attached with a second filter plate (702) at the lower end, the first filter plate (701) and the second filter plate (702) are provided with clamping grooves (703) at the top, the first filter plate (701) and the second filter plate (702) are provided with clamping strips (704) at the bottom, and the first filter plate (701) and the second filter plate (702) are provided with limiting grooves (705) at the two sides.

3. A pressure balanced breather valve for use in a petroleum storage tank as defined in claim 2, wherein, The first filter plate (701) and the second filter plate (702) are the same in shape and structure, the clamping strip (704) at the bottom of the first filter plate (701) is matched and clamped in the clamping groove (703) at the top of the second filter plate (702).

4. A pressure balanced breather valve for use in a petroleum storage tank as defined in claim 2, wherein, The limiting mechanism (8) includes a cylinder frame (801), a group of cylinder frames (801) are symmetrically fixed on one side of the vent pipe (3), a group of U-shaped clamping frames (802) are penetrated in the inside of the cylinder frame (801), a group of limiting ring plates (803) are symmetrically fixed on the surface of the U-shaped clamping frame (802), and springs (804) are connected to the surface of the limiting ring plate (803).

5. A pressure balanced breather valve for use in a petroleum storage tank as defined in claim 4, wherein, The end of the U-shaped clamping frame (802) penetrates the side of the vent pipe (3) and is matched and clamped in the limiting groove (705).

6. A pressure balanced breather valve for use in a petroleum storage tank as defined in claim 4, wherein, The U-shaped clamping frame (802) forms an elastic structure with the limiting ring plate (803), the spring (804) and the cylinder frame (801), and the outer wall of the limiting ring plate (803) is attached to the inner wall of the cylinder frame (801).

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