A positive and negative pressure protector for anaerobic fermenters

Abstract

This utility model relates to the technical field of positive and negative pressure protectors, and provides a positive and negative pressure protector for anaerobic fermenters, including a shell; a gas supply pipe is connected to the right end of the shell, and a slider is slidably installed inside the shell, with a groove at the right end of the slider. The positive and negative pressure protector for anaerobic fermenters provided by this utility model allows for adjustment of the piston plate pressure via a screw and slider, thereby adjusting the pressure range of the protector. A connecting cover with circumferentially arranged air holes on its surface allows the counterforce generated during gas discharge to cancel each other out, thus preventing deformation of the device due to unidirectional exhaust. A baffle, under the action of a torsion spring, fits into the exhaust hole of the connecting cover. When gas is discharged, the baffle is pushed open; when the gas pressure is normal, the baffle returns to its original position. This prevents external dust and moisture from entering the shell and affecting the normal operation of internal components.

Description

Technical Field

[0001] This utility model belongs to the technical field of positive and negative pressure protectors, and in particular relates to a positive and negative pressure protector for anaerobic fermenters. Background Technology

[0002] In the biogas production process, the positive and negative pressure protectors are used to protect the fermentation tank from pressure. The fermentation tank has an upper limit to the pressure it can withstand. If the pressure inside the tank exceeds this value, it may lead to a serious safety accident such as the tank bursting. Therefore, the protector is needed to release the pressure in the tank and ensure its normal use.

[0003] Currently, the structure of the protector is too complex, and the pressure value of a single model of protector is fixed, making it impossible to adjust the pressure relief value according to different tanks. This results in a limited range of applications for the protector. In addition, dust and moisture can easily enter the pressure relief port of the protector, causing internal parts to rust and malfunction, resulting in a shorter lifespan for the protector. Utility Model Content

[0004] This invention provides a positive and negative pressure protector for anaerobic fermenters, aiming to solve the problems of current protectors being unable to adjust pressure values ​​and lacking protective structures at pressure relief ports.

[0005] This utility model is implemented as follows: a positive and negative pressure protector for an anaerobic fermenter includes a shell; a gas supply pipe is connected to the right end of the shell; a slider is slidably installed inside the shell; a groove is formed on the right end of the slider, and a connecting rod is slidably inserted into the groove; a piston plate is connected to the other end of the connecting rod; the piston plate is slidably embedded inside the shell and fits against the inner wall of the shell; a spring is installed in the groove of the slider, and the movable end of the spring is connected to the connecting rod; a limit ring is installed on the inner side wall of the shell; the piston plate abuts against the left side of the limit ring; a screw is rotatably installed on the left end of the shell, and the screw extends into the interior of the shell; a threaded groove adapted to the thread on the surface of the screw is formed on the left side wall of the slider; the screw and the slider are threadedly connected; a handle is connected to the outer end of the screw; and an exhaust port is formed on the side wall of the shell, located to the left of the piston plate.

[0006] Preferably, a connecting cover is installed on the outside of the outer shell. The connecting cover is disc-shaped and has air holes arranged in a circumferential array on its surface. A baffle is installed on the outside of the air holes of the outer shell.

[0007] Preferably, a pin is rotatably mounted on the outer side wall of the housing, the baffle is fixed to the surface of the pin, a torsion spring is sleeved on the outside of the pin, and the other end of the torsion spring is connected to the outer wall of the housing.

[0008] Preferably, a connecting ring is installed on the inner side of the connecting cover, the inner surface of the connecting ring is threaded, and the outer side wall of the outer shell is provided with a threaded groove that matches the thread on the surface of the connecting ring.

[0009] Preferably, the surface of the outer shell is provided with an observation plate, which is made of transparent glass and has scale marks engraved on its surface.

[0010] Preferably, a limiting block is installed at the bottom of the slider, and a limiting groove adapted to the limiting block is provided on the inner side wall of the outer shell.

[0011] Compared with the prior art, the embodiments of this application have the following main advantages: The pressure of the piston plate can be adjusted by setting a screw and a slider, thereby adjusting the pressure range of the protector. By setting a connecting cover, and opening air holes in a circumferential array on the surface of the connecting cover, the counter-thrust force generated when the gas is discharged can be canceled out, thereby avoiding deformation of the device due to one-way exhaust. The baffle is attached to the exhaust hole of the connecting cover under the action of a torsion spring. When the gas is discharged, it will push the baffle open. When the air pressure is normal, the baffle will return to its original position. This can prevent external dust and moisture from entering the shell and affecting the normal use of internal parts. Attached Figure Description

[0012] Figure 1 This is a front view cross-sectional structural diagram of the present invention; Figure 2 This is the utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 This is a side view sectional structural diagram of the connecting cover of this utility model; In the diagram: 1. Outer shell; 2. Gas supply pipe; 3. Slider; 4. Connecting rod; 5. Piston plate; 6. Spring; 7. Limiting ring; 8. Screw; 9. Throttle; 10. Exhaust port; 11. Connecting cover; 12. Connecting ring; 13. Pin; 14. Baffle; 15. Torsion spring; 16. Observation plate; 17. Limiting block. Detailed Implementation

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0014] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0015] This utility model embodiment provides a positive and negative pressure protector for anaerobic fermenters, such as... Figure 1-3 As shown, the device includes a housing 1, with an air supply pipe 2 connected to the right end of the housing 1. A slider 3 is slidably mounted inside the housing 1. A groove is formed on the right end of the slider 3, and a connecting rod 4 is slidably inserted into the groove. The other end of the connecting rod 4 is connected to a piston plate 5, which is slidably embedded inside the housing 1 and fits against the inner wall of the housing 1. A spring 6 is installed in the groove of the slider 3, and the movable end of the spring 6 is connected to the connecting rod 4. A limit ring 7 is installed on the inner side wall of the housing 1, and the piston plate 5 abuts against the left side of the limit ring 7. A screw 8 is rotatably mounted on the left end of the housing 1, extending into the interior of the housing 1. A threaded groove matching the thread on the surface of the screw 8 is formed on the left side wall of the slider 3, and the screw 8 is threadedly connected to the slider 3. A handle 9 is connected to the outer end of the screw 8. An exhaust port 10 is formed on the side wall of the housing 1, located to the left of the piston plate 5. When this device is in use, it can... The gas supply pipe 2 at the right end of the outer shell 1 is connected to the fermentation tank. When the fermentation gas pressure in the fermentation tank increases, gas will enter the outer shell 1 from the gas supply pipe 2. The piston plate 5 in the outer shell 1 acts as a blockage. When the gas pressure increases to a certain value, the piston plate 5 will slide to the left under the action of the gas pressure and compress the spring 6. When the piston plate 5 slides to the exhaust port 10, the gas will be discharged from the exhaust port 10. When the gas pressure returns to normal, the piston plate 5 will return to its original position under the elastic force of the spring 6. The screw 8 is provided, and the throttle 9 can be rotated to drive the screw 8 to rotate. The slider 3 slides horizontally inside the outer shell 1 under the action of the thread on the surface of the screw 8. Since the position of the piston plate 5 remains unchanged, when the slider 3 slides to the right, it will compress the spring 6. After the spring 6 is compressed, the pressure on the piston plate 5 increases. Conversely, when the slider 3 slides to the left, the pressure on the piston plate 5 decreases. This setting can be used to adjust the pressure of the protector.

[0016] A connecting cover 11 is installed on the outside of the outer casing 1. The connecting cover 11 is disc-shaped and has air holes arranged in a circumferential array on its surface. A baffle 14 is installed on the outside of the air holes of the outer casing 1. By providing the connecting cover 11, the connecting cover 11 covers the outside of the exhaust port 10 of the outer casing 1. Gas is discharged from the exhaust port 10 into the connecting cover 11 and then discharged outward from the air holes on the surface of the connecting cover 11. By opening the air holes in a circumferential array on the surface of the connecting cover 11, the counter-thrust force generated when the gas is discharged can be canceled out, thereby avoiding the device from being deformed by force due to unidirectional exhaust.

[0017] A pin 13 is rotatably mounted on the outer side wall of the outer casing 1. A baffle 14 is fixed to the surface of the pin 13. A torsion spring 15 is sleeved on the outside of the pin 13. The other end of the torsion spring 15 is connected to the outer wall of the outer casing 1. With the baffle 14 installed, the baffle 14 is attached to the exhaust hole of the connecting cover 11 under the action of the torsion spring 15. When the gas is discharged, it will push the baffle 14 open. When the air pressure is normal, the baffle 14 will return to its original position. This can prevent external dust and moisture from entering the interior of the outer casing 1 and affecting the normal use of the internal parts.

[0018] A connecting ring 12 is installed on the inner side of the connecting cover 11. The inner surface of the connecting ring 12 is threaded, and the outer side wall of the outer shell 1 is provided with a threaded groove that matches the thread on the surface of the connecting ring 12. By providing the connecting ring 12, the connecting cover 11 is installed on the outside of the outer shell 1. The connecting ring 12 is threadedly connected to the outer shell 1. This arrangement allows the connecting cover 11 to be removed from the outer shell 1 for easy subsequent maintenance.

[0019] The surface of the outer casing 1 is provided with an observation plate 16. The observation plate 16 is made of transparent glass and has scales engraved on its surface. By providing the observation plate 16, the position of the slider 3 can be viewed through the transparent glass observation plate 16, and the slider 3 can be precisely adjusted by referring to the scale marks.

[0020] A limiting block 17 is installed at the bottom of the slider 3, and a limiting groove adapted to the limiting block 17 is provided on the inner side wall of the outer shell 1. By setting the limiting block 17, the limiting block 17 can rotate and limit the slider 3, preventing the slider 3 from rotating with the screw 8 and being unable to slide.

[0021] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0022] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units described above may be implemented in other ways in practice. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0023] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0024] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A positive and negative pressure protector for an anaerobic fermenter, characterized in that, The system includes an outer casing (1): a gas pipe (2) is connected to the right end of the outer casing (1), a slider (3) is slidably installed inside the outer casing (1), a groove is provided on the right end of the slider (3), and a connecting rod (4) is slidably inserted into the groove. The other end of the connecting rod (4) is connected to a piston plate (5), which is slidably embedded inside the outer casing (1) and fits against the inner wall of the outer casing (1). A spring (6) is installed in the groove of the slider (3), and the movable end of the spring (6) is connected to the connecting rod (4). A limiting ring (7) is installed on the inner side wall of the piston plate (5), which abuts against the left side of the limiting ring (7). A screw (8) is rotatably installed on the left end of the outer shell (1), which extends into the interior of the outer shell (1). A threaded groove adapted to the thread on the surface of the screw (8) is opened on the left side wall of the slider (3). The screw (8) and the slider (3) are threadedly connected. A throttle (9) is connected to the outer end of the screw (8). An exhaust port (10) is opened on the side wall of the outer shell (1), which is located to the left of the piston plate (5).

2. The positive and negative pressure protector for an anaerobic fermenter as described in claim 1, characterized in that, A connecting cover (11) is installed on the outside of the outer shell (1). The connecting cover (11) is disc-shaped and has air holes arranged in a circumferential array on its surface. A baffle (14) is installed on the outside of the air holes of the outer shell (1).

3. A positive and negative pressure protector for an anaerobic fermenter as described in claim 2, characterized in that, A pin (13) is rotatably mounted on the outer wall of the outer shell (1). The baffle (14) is fixed to the surface of the pin (13). A torsion spring (15) is sleeved on the outside of the pin (13). The other end of the torsion spring (15) is connected to the outer wall of the outer shell (1).

4. A positive and negative pressure protector for an anaerobic fermenter as described in claim 3, characterized in that, A connecting ring (12) is installed on the inner side of the connecting cover (11). The inner surface of the connecting ring (12) is threaded, and the outer side wall of the outer shell (1) is provided with a threaded groove that matches the thread on the surface of the connecting ring (12).

5. A positive and negative pressure protector for an anaerobic fermenter as described in claim 1, characterized in that, The outer shell (1) is provided with an observation plate (16) on its surface. The observation plate (16) is made of transparent glass and has scale marks on its surface.

6. A positive and negative pressure protector for an anaerobic fermenter as described in claim 1, characterized in that, The bottom of the slider (3) is equipped with a limiting block (17), and the inner sidewall of the outer shell (1) is provided with a limiting groove that is compatible with the limiting block (17).

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