Double-membrane gas holder gravity regulating valve

Abstract

The utility model relates to a gravity regulating valve of a double-membrane gas holder, which comprises an exhaust pipe, an air inlet, an air outlet, an air outlet, an air inlet, a gas outlet, a gas inlet, a gas outlet, a gas outlet, a gas outlet, a gas outlet, a gas inlet and a gas outlet, and is characterized in that the upper end and the lower end of the exhaust pipe are opened; the bracket is arranged on the outer side of the exhaust pipe and is provided with a rotating pin shaft; the exhaust port gland is rotatably connected to the outer side of the bracket through a rotating pin shaft; and the counter weight is arranged on one side of the exhaust port gland. According to the gravity adjusting valve of the double-membrane gas holder, in a normal state, the balance weight performs gravity protection, the exhaust port of the exhaust pipe is closed in a normal state, and when the air pressure of an air channel between the inner membrane and the outer membrane is too large, the exhaust port gland can automatically adjust opening and closing through the balance weight, balance the air pressure, prevent the air membrane from being damaged and guarantee safe operation of biogas.

Description

Technical Field

[0001] The utility model relates to the technical field of biogas engineering, and particularly relates to a gravity regulating valve for a double-membrane gas holder. Background Technique

[0002] The double-membrane gas holder is composed of an inner membrane and an outer membrane. The inner membrane is used for storing biogas, and the outer membrane is wrapped outside the inner membrane to protect the inner membrane and maintain the spherical shape, avoiding the relatively fragile inner membrane from being damaged by strong winds, sand and dust, rain and snow. The outer membrane is wrapped outside the inner membrane, and air is blown into the space between the inner membrane and the outer membrane by an outer membrane fan to support the outer membrane.

[0003] Since the generation process of biogas is unstable and is affected by many factors such as temperature, pressure, and concentration of organic substances, when there is more biogas in the inner membrane, the inner membrane will bulge under the influence of air pressure. If the air in the air passage between the inner membrane and the outer membrane is not discharged in time to make more space, it will cause damage to the gas film and have an adverse impact on the safety of biogas operation. Therefore, a gravity regulating valve for a double-membrane gas holder is proposed. Content of the Utility Model

[0004] Based on the above description, the utility model provides a gravity regulating valve for a double-membrane gas holder, which solves the technical problem that the pressure between the inner and outer membranes of the double-membrane gas holder is unstable and is likely to damage the gas film.

[0005] The technical solution of the utility model for solving the above technical problem is as follows: A gravity regulating valve for a double-membrane gas holder includes:

[0006] An exhaust pipe with openings at both the upper and lower ends. The lower end opening of the exhaust pipe is an exhaust port and is communicated with the outside. The upper end of the exhaust pipe is an air inlet and is communicated with the air passage between the inner membrane and the outer membrane;

[0007] A bracket which is arranged outside the exhaust pipe and has a rotating pin shaft;

[0008] An exhaust port gland which is rotatably connected to the outside of the bracket through the rotating pin shaft;

[0009] A counterweight which is arranged on one side of the exhaust port gland;

[0010] Among them, the exhaust port gland forms a lever structure through the bracket, and under the action of the gravity of the counterweight, the exhaust port gland can seal the exhaust port of the exhaust pipe.

[0011] On the basis of the above technical solution, the utility model can be further improved as follows.

[0012] Further, the counterweight is composed of a plurality of weight trays for applying downward gravity so that the exhaust port gland can seal the exhaust port of the exhaust pipe.

[0013] Further, it further includes an adjusting component, and the counterweight is adjusted by the adjusting component to adjust the lateral distance between the counterweight and the rotating pin shaft.

[0014] Further, a tail wing plate is provided on the exhaust port gland, and a threaded hole is opened on one side of the tail wing plate. The adjusting component is a weight adjusting rod, and the counterweight is arranged on the outer side of the weight adjusting rod. Threads are provided on the outer side of the weight adjusting rod, and the weight adjusting rod is threadedly connected to the threaded hole.

[0015] Further, a retaining cap is fixed at one end of the weight adjusting rod away from the exhaust pipe, and the counterweight is located between the retaining cap and the tail wing plate.

[0016] Further, the exhaust pipe is of a cylindrical structure.

[0017] Further, wing plates are integrally connected to the front and rear edges of the upper surface of the exhaust port gland, and the wing plates are rotatably connected to the bracket through rotating pin shafts.

[0018] Further, a notch is opened at the bottom of the bracket, the notch is located below the rotating pin shaft, and the notch has a height space, so that the exhaust port gland can rotate around the rotating pin shaft.

[0019] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0020] For this double-membrane gas holder gravity regulating valve, under normal conditions, the counterweight provides gravity protection, keeping the exhaust port of the exhaust pipe closed under normal conditions. When the air pressure in the air passage between the inner membrane and the outer membrane is too high, the exhaust port gland can automatically adjust the opening and closing through the counterweight to balance the air pressure, avoid damage to the air film, and ensure the safe operation of the biogas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a double-membrane gas holder gravity regulating valve provided by an embodiment of the present invention;

[0022] Figure 2 is Figure 1 a schematic structural diagram in a half-sectional view;

[0023] Figure 3 is Figure 1 a partial enlarged schematic diagram of area A in

[0024] In the drawings, the list of components represented by each reference numeral is as follows:

[0025] 1. Exhaust pipe; 2. Bracket; 21. Rotating pin shaft; 3. Exhaust port gland; 31. Tail wing plate; 32. Wing plate; 4. Counterweight; a. Height space; 5. Weight adjusting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, in conjunction with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described.

[0027] As Figure 1 and Figure 2 shown, a gravity regulating valve for a double-membrane gas holder in this embodiment includes an exhaust pipe 1, a bracket 2, an exhaust port gland 3, and a counterweight 4. Among them, the bracket 2 is welded to the outside of the exhaust pipe 1, and the bracket has a rotating pin shaft 21. The exhaust port gland 3 is rotatably connected to the outside of the bracket 2 through the rotating pin shaft 21, and the exhaust port gland 3 forms a lever structure through the bracket 2. The counterweight 4 is arranged at the tail of the exhaust port gland 3.

[0028] It should be noted that both the upper and lower ends of the exhaust pipe 1 are open. The lower end opening of the exhaust pipe 1 is the exhaust port and is connected to the outside. The upper end of the exhaust pipe 1 is the air inlet and is connected to the air passage between the inner membrane and the outer membrane.

[0029] And the exhaust pipe 1 is a cylindrical structure. It can be understood that the exhaust pipe 1 can also be, for example, a square pipe, as long as the exhaust requirements are met and the exhaust is not affected.

[0030] In addition, wing plates 32 are integrally connected to the front and rear edges of the upper surface of the exhaust port gland 3. The wing plates 32 are rotatably connected to the bracket 2 through the rotating pin shaft 21. The number of the brackets 2 and the rotating pin shafts 21 is two groups, and the two groups of brackets 2 are symmetrically distributed. As Figure 3 shown, a notch is provided at the bottom of the bracket 2. The notch is located below the rotating pin shaft 21, and the notch has a height space a without interference. In this way, the normal deflection of the exhaust port gland 3 is ensured, so that the exhaust port gland 3 can smoothly rotate around the rotating pin shaft 21.

[0031] Under normal conditions, under the action of the gravity of the counterweight 4, the exhaust port gland 3 can seal the exhaust port of the exhaust pipe 1 to prevent the gas in the air passage between the inner membrane and the outer membrane from leaking.

[0032] It should also be noted that whether the exhaust port gland 3 is opened depends on the magnitude of the pressure exerted by the air pressure in the air passage between the inner membrane and the outer membrane, and also depends on the weight of the counterweight 4. In addition, the rotation angle of the exhaust port gland 3 is preferably a small deflection, and the small deflection means not exceeding 30 degrees to ensure that the counterweight 4 can make the exhaust port gland 3 return to its normal position. It can be understood that when the preferred deflection angle is exceeded, for example, a spring needs to be equipped to reset the exhaust port gland 3.

[0033] In application, when the air pressure in the air passage between the inner membrane and the outer membrane is too high and the counterweight 4 cannot hold down the exhaust port gland 3, affected by the air pressure, the exhaust port gland 3 can automatically adjust its opening and closing through the counterweight 4. During the automatic adjustment of the opening and closing of the exhaust port gland 3, the work of balancing the air pressure can be completed to avoid damage to the air film and thus ensure the safe operation of biogas.

[0034] For further explanation, the counterweight 4 is composed of several weight trays to apply downward gravity so that the exhaust port gland 3 can seal the exhaust port of the exhaust pipe 1. The weight of the weight trays is selected according to actual needs.

[0035] As Figure 1 and 2 shown, in a certain embodiment, further implemented, the gravity regulating valve of the double-membrane gas holder further includes an adjusting component, and the counterweight 4 adjusts the horizontal distance between the counterweight 4 and the rotating pin 21 through the adjusting component.

[0036] For further explanation, a tail fin plate 31 is integrally connected to the exhaust port gland 3. A threaded hole is provided on one side of the tail fin plate 31. The adjusting component is a weight adjusting rod 5. The counterweight 4 is arranged outside the weight adjusting rod 5. Threads are provided on the outside of the weight adjusting rod 5 so that the weight adjusting rod 5 is threadedly connected to the threaded hole.

[0037] It should be noted that a retaining cap is fixed to the end of the weight adjusting rod 5 away from the exhaust pipe 1, and the counterweight 4 is located between the retaining cap and the tail fin plate 31 to prevent the counterweight 4 from falling off.

[0038] In addition, the bracket 2, the rotating pin 21, the exhaust port gland 3, the tail fin plate 31, the side fin plate 32, the counterweight 4, and the weight adjusting rod 5 are all preferably made of stainless steel and are not easily damaged.

[0039] With such a design, when adjusting the value of the pressure required to open the exhaust port gland 3, according to the actual situation, the weight adjusting rod 5 can be rotated to control the horizontal distance between the counterweight 4 and the rotating pin 21, change the balance of the lever structure, and thus adjust the value of the pressure required to open the exhaust port gland 3.

[0040] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A gravity regulating valve for a double-membrane gas holder, characterized in that, Including: An exhaust pipe (1) with openings at both its upper and lower ends. The lower opening of the exhaust pipe (1) is an exhaust port and is in communication with the outside. The upper end of the exhaust pipe (1) is an air inlet and is in communication with the air passage between the inner membrane and the outer membrane. A bracket (2) which is arranged outside the exhaust pipe (1) and has a rotating pin shaft (21). An exhaust port gland (3) which is rotatably connected to the outside of the bracket (2) through the rotating pin shaft (21). A counterweight (4) which is arranged on one side of the exhaust port gland (3). Wherein, the exhaust port gland (3) forms a lever structure through the bracket (2). Under the action of the gravity of the counterweight (4), the exhaust port gland (3) can seal the exhaust port of the exhaust pipe (1).

2. The gravity regulating valve of a double-membrane gas holder according to claim 1, characterized in that: The counterweight (4) is composed of several weight trays for applying downward gravity so that the exhaust port gland (3) can seal the exhaust port of the exhaust pipe (1).

3. The gravity regulating valve of a double-membrane gas holder according to claim 1, characterized in that: It further includes an adjusting component. The counterweight (4) adjusts the lateral distance between the counterweight (4) and the rotating pin shaft (21) through the adjusting component.

4. A gravity regulating valve for a double-membrane gas holder according to claim 3, characterized in that: A tail fin plate (31) is arranged on the exhaust port gland (3). A threaded hole is opened on one side of the tail fin plate (31). The adjusting component is a weight adjusting rod (5). The counterweight (4) is arranged outside the weight adjusting rod (5). Threads are arranged on the outside of the weight adjusting rod (5) so that the weight adjusting rod (5) is threadedly connected to the threaded hole.

5. A gravity regulating valve for a double-membrane gas holder according to claim 4, characterized in that: A retaining cap is fixed at one end of the weight adjusting rod (5) away from the exhaust pipe (1). The counterweight (4) is located between the retaining cap and the tail fin plate (31).

6. The gravity regulating valve of a double-membrane gas holder according to claim 1, characterized in that: The exhaust pipe (1) is of a cylindrical structure.

7. A gravity regulating valve for a double-membrane gas holder according to claim 1, characterized in that: Flanking plates (32) are integrally connected to the front and rear edges of the upper surface of the exhaust port gland (3). The flanking plates (32) are rotatably connected to the bracket (2) through the rotating pin shaft (21).

8. A gravity regulating valve for a double-membrane gas holder according to claim 1, characterized in that: A notch is opened at the bottom of the bracket (2). The notch is located below the rotating pin shaft (21) and has a height space (a) so that the exhaust port gland (3) can rotate around the rotating pin shaft (21).

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