Water seal type positive and negative pressure protection device capable of automatically replenishing water

Abstract

The utility model relates to a water seal type positive and negative pressure protection device capable of automatically replenishing water, and belongs to the field of water seal equipment. According to the technical scheme, a body is included, a partition plate is arranged in the body, a first cavity is formed above the partition plate, an adjusting pipe is arranged on the partition plate, the upper end of the adjusting pipe is connected with the partition plate and communicated with the first cavity, and the lower end of the adjusting pipe is arranged above the bottom end face in the body; an air inlet pipe is arranged on the body and communicated with the third cavity, the lower end of the air inlet pipe is higher than the bottom end face of the second cavity, and a water supplementing pipe is further arranged on the body and communicated with the third cavity. Through the arrangement of the second chamber and the third chamber, the water seal design prevents gas in the anaerobic jar from overflowing, the water replenishing pipe performs water replenishing work when the liquid level in the protection device is lower, and the situation that effective water seal cannot be performed when the water seal liquid in the protection device is less is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water seal equipment, in particular to an automatic water-replenishing water seal type positive and negative pressure protection device. Background Art

[0002] To address environmental pollution and the energy crisis, two major challenges hindering human development, the resource utilization of biomass waste has seen unprecedented development and application. Anaerobic processes are often used to generate biogas from biomass resources, including household waste, livestock and poultry manure, agricultural waste, and food waste.

[0003] The anaerobic tank is a highly efficient multi-stage internal circulation anaerobic reaction tank. It has the characteristics of small footprint, high organic load, stronger impact resistance, more stable performance, and simpler operation and management. The anaerobic tank is suitable for the treatment of high-concentration organic wastewater, such as corn starch wastewater, citric acid wastewater, beer wastewater, potato processing wastewater, and alcohol wastewater. During the use of the anaerobic tank, in order to ensure the safety of the anaerobic tank, a pressure relief protection device needs to be installed so that the pressure can be relieved regularly to prevent the internal pressure of the tank from being too high, causing safety hazards.

[0004] However, during operation, the production of biogas will cause fluctuations in the tank top pressure, which will cause vibration of the tank top steel plate. In severe cases, the tank body may crack. In addition, during actual operation, the tank body needs to be inspected or maintained from time to time, which may cause the tank body liquid level to drop due to drainage and mud discharge. If the tank top is sealed and there is no suitable air inlet, negative pressure will occur in the tank body, which will cause the tank body to deform. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art and provides a water-sealed positive and negative pressure protection device with automatic water replenishment, which solves the problem in the prior art that the internal pressure change during the use of the anaerobic tank may cause the tank body to deform.

[0006] The technical solutions adopted in this utility model are as follows:

[0007] A water-sealed positive and negative pressure protection device with automatic water replenishment includes a main body, a partition is provided inside the main body, a first chamber is formed above the partition, a regulating tube is provided on the partition, the upper end of the regulating tube is connected to the partition and communicated with the first chamber, the lower end of the regulating tube is provided above the bottom end surface of the main body, the interior of the regulating tube is a second chamber, the area below the partition and excluding the second chamber is a third chamber, an air intake pipe is provided on the main body, the air intake pipe is communicated with the third chamber, the lower end of the air intake pipe is provided above the bottom end surface of the second chamber, and a water replenishment pipe is also provided on the main body, the water replenishment pipe is communicated with the third chamber. Through the second and third chambers, water is injected into the water supply pipe until the water level is flush with the lower end of the air inlet pipe. At this time, if the air pressure in the anaerobic tank increases, the water level in the third chamber drops and the water level in the second chamber rises. When the pressure in the anaerobic tank decreases, the water level in the second chamber drops and the water in the third chamber flows into the anaerobic tank through the air inlet, thereby avoiding damage to the anaerobic tank caused by excessive pressure changes. At the same time, the water seal design avoids gas overflow in the anaerobic tank. At the same time, the water supply pipe is provided to replenish water when the liquid level gauge inside the protection device is low, thereby avoiding the situation where an effective water seal cannot be performed due to less water seal liquid in the protection device.

[0008] Preferably, the water supply pipe is arranged above the partition, and the water supply pipe passes through the first chamber and the second chamber in sequence and then communicates with the third chamber.

[0009] Preferably, the main body is further provided with an exhaust pipe, which is disposed above the partition and directly communicates with the first chamber. Through the exhaust pipe, when the pressure within the anaerobic tank increases and the liquid level in the second chamber rises, the air in the second chamber and the air in the first chamber are discharged to the outside through the exhaust pipe. When the pressure within the anaerobic tank decreases and the liquid level in the second chamber drops, the outside air is replenished into the first and second chambers through the exhaust pipe.

[0010] Preferably, the exhaust pipe is disposed on the upper end surface of the body. By disposing the exhaust pipe on the upper end surface of the body, when the pressure in the anaerobic tank increases too quickly, the sealing water in the second chamber rises into the first chamber. At this time, the sealing water will not contact the exhaust pipe on the upper end surface of the first chamber, thereby preventing the sealing water from entering the exhaust pipe.

[0011] Preferably, a liquid level gauge is provided on one side of the body, and the upper and lower ends of the liquid level gauge are respectively connected to the third chamber at different heights. The liquid level gauge can be used to observe the liquid level inside the protective device, so that the personnel can judge whether water replenishment is needed.

[0012] Preferably, the main body is further provided with a pressure pipe, which is directly connected to the third chamber, and the connection point between the pressure pipe and the third chamber is located above the air inlet pipe. Through the provided pressure pipe, a mechanical pressure gauge can be installed to facilitate the staff to check the pressure inside the protective device.

[0013] Preferably, the regulating tube is a stainless steel round tube. Using a stainless steel round tube as the regulating tube has no weld seams around it, which makes the force distribution more uniform, further reducing the risk of gas leakage. At the same time, the use of stainless steel prevents the regulating tube from being corroded by corrosive gases, thereby extending the service life of the protective device.

[0014] The advantages of the present invention are as follows: by providing the second chamber and the third chamber, water is injected into the water supply pipe until the water level is flush with the lower end of the air inlet pipe. At this time, if the air pressure in the anaerobic tank increases, the water level in the third chamber drops and the water level in the second chamber rises. When the pressure in the anaerobic tank decreases, the water level in the second chamber drops, and the water in the third chamber flows into the anaerobic tank through the air inlet, thereby avoiding damage to the anaerobic tank caused by excessive pressure changes. At the same time, the water seal design avoids gas overflow in the anaerobic tank. At the same time, the water supply pipe is provided, and water supply work is performed when the liquid level gauge inside the protective device is low, thereby avoiding the situation where an effective water seal cannot be performed due to insufficient water seal liquid in the protective device. By providing the exhaust pipe, when the pressure in the anaerobic tank increases and the liquid level in the second chamber rises, the air in the second chamber and the air in the first chamber are discharged to the outside through the exhaust pipe. When the pressure in the anaerobic tank decreases and the liquid level in the second chamber drops, the outside air is replenished into the first and second chambers through the exhaust pipe. By setting the exhaust pipe on the upper end face of the main body, when the pressure in the anaerobic tank increases too quickly, the sealing water in the second chamber rises to the first chamber. At this time, the sealing water will not contact the exhaust pipe on the upper end face of the first chamber, thus preventing the sealing water from entering the exhaust pipe. The liquid level inside the protective device can be observed by the provided liquid level gauge, which is convenient for the personnel on duty to judge whether water replenishment operation is needed. The pressure pipe provided allows the installation of a mechanical pressure gauge, which is convenient for the staff to check the pressure inside the protective device. The use of a stainless steel round tube as the regulating tube has no welds around it, and the force distribution is more uniform, further avoiding the risk of gas leakage. At the same time, the use of stainless steel material avoids the corrosion of the regulating tube by corrosive gases, thereby extending the service life of the protective device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural diagram of an embodiment of a specific implementation of the utility model.

[0017] Figure 2 It is a cross-sectional view of an embodiment of a specific implementation of the present utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present utility model when the pressure in the anaerobic tank is balanced.

[0019] Figure 4 This is a schematic diagram of the internal structure of an embodiment of the present utility model when the pressure in the anaerobic tank increases.

[0020] Figure 5 This is a schematic diagram of the internal structure of an embodiment of the present utility model when the pressure in the anaerobic tank is reduced.

[0021] Description of main reference numerals

[0022] In the figure: 1. Main body; 2. Partition; 3. First chamber; 4. Adjustment pipe; 5. Second chamber; 6. Third chamber; 7. Air inlet pipe; 8. Water supply pipe; 9. Exhaust pipe; 10. Liquid level gauge; 11. Pressure pipe. DETAILED DESCRIPTION

[0023] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0024] Example:

[0025] like Figure 1-Figure 5 As shown, an automatic water-replenishing water-sealed positive and negative pressure protection device includes a body 1, a partition 2 is provided inside the body 1, a first chamber 3 is above the partition 2, a regulating pipe 4 is provided on the partition 2, the upper end of the regulating pipe 4 is connected to the partition 2 and communicated with the first chamber 3, the lower end of the regulating pipe 4 is provided above the bottom end surface of the body 1, the inside of the regulating pipe 4 is a second chamber 5, the area below the partition 2 and excluding the second chamber 5 is a third chamber 6, an air inlet pipe 7 is provided on the body 1, and the air inlet pipe 7 is connected to the third chamber 6 is connected, the lower end of the air inlet pipe 7 is higher than the bottom end surface of the second chamber 5. A water supply pipe 8 is further provided on the body 1, and the water supply pipe 8 is connected to the third chamber 6. The water supply pipe 8 is provided above the partition 2, and the water supply pipe 8 passes through the first chamber 3 and the second chamber 5 in sequence and is connected to the third chamber 6. In this embodiment, the regulating pipe 4 is a stainless steel round tube. In this way, water is injected into the water supply pipe 8 through the second chamber 5 and the third chamber 6 until the water level is flush with the lower end of the air inlet pipe 7. When the air pressure in the anaerobic tank increases, as shown in FIG. Figure 4 As shown in FIG. 1 , the water level in the third chamber 6 decreases, and the water level in the second chamber 5 increases. When the pressure in the anaerobic tank decreases, as shown in FIG. Figure 5As shown, the water level in the second chamber 5 drops, and the water in the third chamber 6 flows into the anaerobic tank through the air inlet, avoiding damage to the anaerobic tank due to excessive pressure changes. At the same time, the water seal design avoids gas overflow in the anaerobic tank. At the same time, a water supply pipe 8 is provided, and water supply is performed when the liquid level gauge 10 inside the protection device is low, avoiding the situation where an effective water seal cannot be performed when there is less water seal liquid in the protection device. A stainless steel round tube is used as the regulating tube 4, and there are no welds around it, so the force distribution is more uniform, further avoiding the risk of gas leakage. At the same time, the use of stainless steel material avoids the corrosion of the regulating tube 4 by corrosive gases, thereby extending the service life of the protection device.

[0026] In this embodiment, an exhaust pipe 9 is further provided on the main body 1. The exhaust pipe 9 is provided above the partition 2 and is directly connected to the first chamber 3. With such a configuration, when the pressure in the anaerobic tank increases and the liquid level in the second chamber 5 rises, the air in the second chamber 5 and the air in the first chamber 3 are discharged to the outside through the exhaust pipe 9. When the pressure in the anaerobic tank decreases and the liquid level in the second chamber 5 drops, the outside air is supplied to the first chamber 3 and the second chamber 5 through the exhaust pipe 9.

[0027] In this embodiment, the exhaust pipe 9 is arranged on the upper end surface of the main body 1. In this way, by arranging the exhaust pipe 9 on the upper end surface of the main body 1, when the pressure in the anaerobic tank increases too quickly, the sealing water in the second chamber 5 rises into the first chamber 3. At this time, the sealing water will not contact the exhaust pipe 9 on the upper end surface of the first chamber 3, thereby preventing the sealing water from entering the exhaust pipe 9.

[0028] Preferably, a liquid level gauge 10 is also provided on one side of the main body 1, and the upper and lower ends of the liquid level gauge 10 are respectively connected to the third chamber 6 at different heights. In this way, the liquid level inside the protective device can be observed through the provided liquid level gauge 10, which is convenient for the personnel on duty to judge whether water replenishment operation is required.

[0029] Preferably, a pressure tube 11 is also provided on the main body 1, and the pressure tube 11 is directly connected to the third chamber 6, and the connection point between the pressure tube 11 and the third chamber 6 is located above the air inlet pipe 7. In this way, a mechanical pressure gauge can be installed through the set pressure tube 11, which is convenient for the staff to check the pressure inside the protective device.

[0030] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic water-replenishing water-sealed positive and negative pressure protection device, comprising a body (1), characterized in that: A partition (2) is provided inside the body (1), a first chamber (3) is located above the partition (2), a regulating pipe (4) is provided on the partition (2), an upper end of the regulating pipe (4) is connected to the partition (2) and communicated with the first chamber (3), a lower end of the regulating pipe (4) is provided above the bottom end surface inside the body (1), a second chamber (5) is located inside the regulating pipe (4), a third chamber (6) is located below the partition (2) and excluding the second chamber (5), an air intake pipe (7) is provided on the body (1), the air intake pipe (7) is communicated with the third chamber (6), the lower end of the air intake pipe (7) is provided above the bottom end surface of the second chamber (5), a water supply pipe (8) is also provided on the body (1), and the water supply pipe (8) is communicated with the third chamber (6).

2. The automatic water-replenishing water-sealed positive and negative pressure protection device according to claim 1 is characterized in that: The water supply pipe (8) is arranged above the partition (2), and the water supply pipe (8) passes through the first chamber (3) and the second chamber (5) in sequence and then communicates with the third chamber (6).

3. The automatic water-replenishing water-sealed positive and negative pressure protection device according to claim 1 is characterized in that: An exhaust pipe (9) is also provided on the main body (1). The exhaust pipe (9) is provided above the partition plate (2) and is directly connected to the first chamber (3).

4. The automatic water-replenishing water-sealed positive and negative pressure protection device according to claim 3 is characterized in that: The exhaust pipe (9) is arranged on the upper end surface of the main body (1).

5. The automatic water-replenishing water-sealed positive and negative pressure protection device according to claim 1 is characterized in that: A liquid level gauge (10) is also provided on one side of the body (1), and the upper end and the lower end of the liquid level gauge (10) are respectively connected to the third chamber (6) at different heights.

6. The automatic water-replenishing water-sealed positive and negative pressure protection device according to claim 1 is characterized in that: The main body (1) is also provided with a pressure pipe (11), which is directly connected to the third chamber (6), and the connection point between the pressure pipe (11) and the third chamber (6) is located above the air inlet pipe (7).

7. The automatic water-replenishing water-sealed positive and negative pressure protection device according to any one of claims 1 to 6, characterized in that: The regulating tube (4) is a stainless steel round tube.

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