Ventilation structure for a digestion furnace

Abstract

The utility model discloses a ventilation structure for digestion furnace, including digestion furnace, digestion furnace is equipped with fixed pipe one side, and the fixed pipe has the ventilation pipe spirally in, ventilation pipe other end connects laboratory special fume hood. The sealing rubber ring of this ventilation structure for digestion furnace is by two groups of different diameter ring, and ventilation pipe one end is equipped with the thread in the outer wall, and ventilation pipe and fixed pipe constitute the spiral locking structure, to seal the ventilation pipe, fixed pipe joint gap through the ring rubber ring of different diameter simultaneously, can be on the outside of the gap to its shielding, further guarantee the sealing property of pipeline joint place, and the telescopic link of the device constitutes the elastic telescopic structure through spring and hollow pole, and the telescopic link constitutes the clamping limit structure through the limit block and pressing plate, to make the pressing plate extrude the rubber seal ring through the telescopic limit block component, further increase the sealing effect of rubber seal ring to the joint.

Description

Technical Field

[0001] This utility model relates to the field of digester technology, specifically a ventilation structure for a digester. Background Technology

[0002] A digestion furnace, also known as a digester or digestion appliance, is a sample pretreatment device that uses heat and the addition of strong acid (sometimes combined with a strong oxidizing agent) at high temperatures to completely decompose and oxidize the organic matter in a sample, converting the analyte elements (such as nitrogen, phosphorus, heavy metals, etc.) into specific forms (such as inorganic ions). During operation, a ventilation system is used to ensure the safe use of the digestion furnace and to promptly remove the large amounts of highly corrosive, irritating, and toxic acid fumes and vapors generated inside the equipment.

[0003] In practice, ventilation structures connect the digester and gas processing equipment via ventilation ducts to facilitate the collection and treatment of harmful gases. However, with long-term use, it is difficult to ensure the airtightness of the connections in existing ventilation structures, which can easily lead to gas leaks and environmental impacts. Therefore, a new ventilation structure for digesters is proposed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a ventilation structure for a digester furnace, in order to solve the problem mentioned in the background art that the existing ventilation structure is inconvenient to ensure the sealing of the connection of the ventilation duct during long-term use, which easily leads to gas leakage and environmental impact.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a ventilation structure for a digestion furnace, comprising a digestion furnace, wherein a fixed pipe is provided on one side of the digestion furnace, and a ventilation pipe is spirally arranged inside the fixed pipe; the other end of the ventilation pipe is connected to a laboratory-specific fume hood; a sealing rubber ring is provided on the outer wall of one end of the ventilation pipe, and one end of the sealing rubber ring is embedded in the fixed pipe. A pressure plate is inserted through the ventilation pipe on one side of the rubber sealing ring, and multiple sets of through holes are opened on the pressure plate. Telescopic rods are inserted through the through holes and are inserted into hollow rods. The hollow rods are respectively set on the digestion furnace outside the fixed pipe, and a spring is provided between the hollow rods and the telescopic rods. Limiting blocks are provided on the outer walls of both sides of the telescopic rods, and multiple sets of limiting grooves are correspondingly opened on the pressure plate. The limiting blocks are respectively inserted into the limiting grooves. The fixed tube has a spiral groove on the outside of the digester, and a protective cover is spiraled inside the spiral groove. The protective cover has a buffer pad on its upper end face, and a protective plate is provided above the buffer pad. The protective cover has a gas detector on its lower inner wall, and an exhaust pipe is provided on one side of the protective cover. The exhaust pipe has a control valve, and the other end of the control valve is connected to the gas treatment equipment through a connecting pipe. The outer wall of the ventilation pipe has a rubber plate on the inner side of the protective cover.

[0006] Preferably, the sealing rubber ring is composed of two sets of rings with different diameters, and one end of the ventilation pipe is provided with a thread on the outer wall, and the ventilation pipe and the fixing pipe form a spiral locking structure.

[0007] Preferably, the telescopic rod forms an elastic telescopic structure with a spring and a hollow rod, and the telescopic rod forms a locking and limiting structure with a limiting block and a pressure plate.

[0008] Preferably, one end of the protective cover has a corresponding thread on the outer wall, and the protective cover forms a spiral locking structure with the digester through a spiral groove.

[0009] Preferably, the interior of the protective cover is connected to the gas processing equipment via an exhaust pipe and a control valve.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: The sealing rubber ring of the ventilation structure for the digester is composed of two sets of rings with different diameters, and one end of the ventilation pipe is correspondingly threaded on the outer wall. The ventilation pipe and the fixed pipe form a spiral locking structure. Thus, the connection gap between the ventilation pipe and the fixed pipe is sealed by the rubber rings of different diameters, while the gap is shielded from the outside, further ensuring the sealing performance of the pipe connection. The telescopic rod of the device forms an elastic telescopic structure through a spring and a hollow rod, and the telescopic rod forms a locking and limiting structure through a limiting block and a pressure plate. Thus, the pressure plate is squeezed by the telescopic limiting block assembly, further increasing the sealing effect of the rubber sealing ring at the connection. One end of the protective cover of the device is correspondingly threaded on the outer wall, and the protective cover forms a spiral locking structure with the digester through a spiral groove. Thus, the spirally installed protective cover can further prevent gas leakage to the outside due to poor sealing of the ventilation duct, while effectively protecting the ventilation duct assembly. Attached Figure Description

[0011] Figure 1 This is a rear view schematic diagram of a ventilation structure for a digester furnace according to the present invention. Figure 2 This is a side view schematic diagram of a ventilation structure for a digester furnace according to the present invention; Figure 3 This is a schematic diagram of the structure of a ventilation structure protective cover assembly for a digester furnace according to the present invention; Figure 4 This is a side view of a ventilation structure protective cover assembly for a digester furnace according to the present invention.

[0012] In the diagram: 1. Digester, 2. Fixed pipe, 3. Ventilation pipe, 4. Rubber sealing ring, 5. Hollow rod, 6. Telescopic rod, 7. Limiting block, 8. Spring, 9. Pressure plate, 10. Spiral groove, 11. Protective cover, 12. Buffer pad, 13. Protective plate, 14. Gas detector, 15. Exhaust pipe, 16. Rubber plate. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-4 This utility model provides a technical solution: a ventilation structure for a digestion furnace, including a digestion furnace 1, a fixed pipe 2 on one side of the digestion furnace 1, and a ventilation pipe 3 spirally inside the fixed pipe 2, the other end of the ventilation pipe 3 being connected to a laboratory fume hood, a sealing rubber ring 4 on the outer wall of one end of the ventilation pipe 3, and one end of the sealing rubber ring 4 being embedded in the fixed pipe 2. It should be noted that an O-ring is provided at the connection end of the ventilation pipe 3, so as to facilitate the protection of the threads at the connection.

[0015] Furthermore, the sealing rubber ring 4 is composed of two sets of rings with different diameters, and one end of the ventilation pipe 3 is provided with a thread on the outer wall. The ventilation pipe 3 and the fixed pipe 2 form a spiral locking structure. Thus, the rubber sealing ring composed of multiple sets of rings can provide secondary protection for the gaps in the pipe connection, thereby effectively ensuring the sealing of the pipe connection.

[0016] A pressure plate 9 is inserted through one side of the rubber sealing ring 4 onto the ventilation pipe 3, and multiple sets of through holes are opened on the pressure plate 9. Telescopic rods 6 are inserted into the through holes, and the telescopic rods 6 are inserted into the hollow rods 5. The hollow rods 5 are respectively set on the digestion furnace 1 outside the fixed pipe 2, and a spring 8 is provided between the hollow rods 5 and the telescopic rods 6. Limiting blocks 7 are respectively provided on the outer walls of both sides of the telescopic rods 6, and multiple sets of limiting grooves are correspondingly opened on the pressure plate 9, and the limiting blocks 7 are respectively inserted into the limiting grooves.

[0017] Furthermore, the telescopic rod 6 forms an elastic telescopic structure with the hollow rod 5 via the spring 8, and the telescopic rod 6 forms a locking and limiting structure with the pressure plate 9 via the limiting block 7. Thus, under the action of the spring 8 and its related components, the pressure plate 9 is brought into close contact with the rubber sealing ring 4, so that the sealing effect of the rubber sealing ring 4 on the pipe connection is further increased by the pressure plate 9 subjected to the squeezing pressure.

[0018] A spiral groove is formed on the outer side of the fixed pipe 2 on the digester 1, and a protective cover 11 is spirally arranged inside the spiral groove. A buffer pad 12 is provided on the upper end face of the protective cover 11, and a protective plate 13 is provided above the buffer pad 12. A gas detector 14 is provided on the lower inner wall of the protective cover 11, and an exhaust pipe 15 is provided on one side of the protective cover 11. A control valve is provided on the exhaust pipe 15, and the other end of the control valve is connected to the gas treatment equipment through a connecting pipe. A rubber plate 16 is provided on the outer wall of the ventilation pipe 3 on the inner side of the protective cover 11. It should be noted that the surface of the inner wall of the ventilation pipe 3 is designed according to the flowing gas to ensure that the digester 1 While providing ventilation, it effectively reduces resistance and prevents the adhesion and accumulation of acid mist, dust, and condensate. The outer wall of the ventilation duct 3 is wrapped with sound-absorbing material, thus effectively ensuring noise reduction during the operation of the ventilation duct 3. In addition, the gas detector 14 in the device is wirelessly connected to an external control system and display component, so that the gas content inside the protective cover 11 can be monitored in real time. This utility model is a ventilation structure for a digester furnace. All components are standard parts or parts known to those skilled in the art. Its structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0019] Furthermore, one end of the protective cover 11 is provided with a thread on the outer wall, and the protective cover 11 forms a spiral locking structure with the digestion furnace 1 through the spiral groove 10. Thus, the spirally installed protective cover 11 further avoids gas leakage that could affect the environment if there is a problem with the sealing of the pipe connection. At the same time, the pipe connection can be effectively protected by the protective cover 11 and the protective plate 13 and other components.

[0020] Furthermore, the interior of the protective cover 11 is connected to the gas processing equipment through the exhaust pipe 15 and the control valve, so that the gas detector 14 can detect the sealing of the pipe connection in a timely manner, and facilitate the timely detection and handling of gas leaks.

[0021] Working Principle: Before using the ventilation structure for the digester, the protective cover 11 and pressure plate 9 are first inserted into the ventilation pipe 3. After insertion, the rubber sealing ring 4 and rubber plate 16 are fixedly installed on the outer wall of the ventilation pipe 3. Then, the ventilation pipe 3 is spirally installed onto the fixed pipe 2, with one end of the rubber sealing ring 4 embedded in the fixed pipe 2. This allows for initial sealing of the pipe connection through the inner ring structure, and further sealing through the outer ring structure of the fixed pipe 2. After the ventilation pipe 3 is installed, the pressure plate 9 can be moved towards the pipe connection, and the telescopic rod 6 is inserted into the through hole on the pressure plate 9. The telescopic rod 6 is then rotated so that the limiting block 7 is aligned with the limiting groove on the pressure plate 9, allowing the limiting block 7 and spring 8 to pass through. The component compresses the pressure plate 9, thereby further increasing the sealing performance of the rubber sealing ring 4 at the pipe connection through the pressure plate 9. After the pressure plate 9 is in position, the protective cover 11 can be spirally installed on the outside of the pressure plate 9. This is to further prevent gas leakage at the pipe connection from causing environmental harm, while the protective cover 11 and its upper end protective components can effectively protect the pipe connection, further ensuring the overall safety of the ventilation duct. At the same time, the gas content inside the protective cover 11 can be monitored in real time by the gas detector 14 inside the protective cover 11, so that in case of gas leakage, the gas inside the protective cover 11 can be treated in time through the artificial gas passage control valve and the exhaust pipe 15, further ensuring the safety of the ventilation structure of the digester 11. This is the usage process of the ventilation structure used in the digester.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ventilation structure for a digester furnace, comprising a digester furnace (1), wherein a fixed pipe (2) is provided on one side of the digester furnace (1), and a ventilation pipe (3) is spirally arranged inside the fixed pipe (2), the other end of the ventilation pipe (3) being connected to a laboratory-specific fume hood, characterized in that: One end of the ventilation pipe (3) is provided with a rubber sealing ring (4) on the outer wall, and one end of the rubber sealing ring (4) is embedded in the fixed pipe (2); A pressure plate (9) is inserted through the ventilation pipe (3) on one side of the rubber sealing ring (4), and multiple sets of through holes are opened on the pressure plate (9). Telescopic rods (6) are inserted through the through holes respectively, and the telescopic rods (6) are inserted into the hollow rods (5). The hollow rods (5) are respectively set on the digestion furnace (1) outside the fixed pipe (2), and a spring (8) is provided between the hollow rods (5) and the telescopic rods (6). Limiting blocks (7) are respectively provided on the outer walls of both sides of the telescopic rods (6), and multiple sets of limiting grooves are opened on the pressure plate (9). The limiting blocks (7) are respectively inserted into the limiting grooves. The fixed tube (2) has a spiral groove on the outside of the digester (1), and a protective cover (11) is spirally arranged in the spiral groove. The protective cover (11) has a buffer pad (12) on its upper end face, and a protective plate (13) is provided on the buffer pad (12) above it. The protective cover (11) has a gas detector (14) on its lower inner wall, and an exhaust pipe (15) is provided on one side of the protective cover (11). The exhaust pipe (15) has a control valve, and the other end of the control valve is connected to the gas processing equipment through a connecting pipe. The outer wall of the ventilation pipe (3) has a rubber plate (16) on the inner side of the protective cover (11).

2. The ventilation structure for a digester according to claim 1, characterized in that: The rubber sealing ring (4) is composed of two sets of rings with different diameters, and one end of the ventilation pipe (3) is provided with a thread on the outer wall, and the ventilation pipe (3) and the fixed pipe (2) form a spiral locking structure.

3. The ventilation structure for a digester according to claim 1, characterized in that: The telescopic rod (6) forms an elastic telescopic structure with the hollow rod (5) via the spring (8), and the telescopic rod (6) forms a locking and limiting structure with the pressure plate (9) via the limiting block (7).

4. The ventilation structure for a digester according to claim 1, characterized in that: The protective cover (11) has a thread on one end of its outer wall, and the protective cover (11) forms a spiral locking structure with the digester (1) through the spiral groove (10).

5. A ventilation structure for a digester according to claim 1, characterized in that: The protective cover (11) is connected to the gas processing equipment through the exhaust pipe (15) and control valve.

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