An exhaust chamber group

Abstract

This application relates to an exhaust chamber assembly, belonging to the field of pneumatic conveying. It includes a drainage chamber with an air inlet at its bottom. A protrusion is provided on the air inlet, surrounding it, and its height is higher than the height of the inner bottom plate of the drainage chamber. An exhaust pipe is connected to the side wall of the drainage chamber. The top surface of the protrusion is higher than the lower edge of the exhaust pipe. A slag removal hopper is connected to the end of the exhaust pipe away from the drainage chamber. An air outlet is provided at the top of the slag removal hopper for connection to a vacuum pump. When the exhaust chamber assembly is in operation, the drainage chamber is sealed. Gas flows in only from the air inlet, through the exhaust pipe to the slag removal hopper, and then out from the air outlet. This application effectively reduces material contamination and subsequent caking caused by condensate backflow, while also reducing the possibility of the exhaust channel being blocked or clogged by solids.

Description

Technical Field

[0001] This application relates to the field of pneumatic conveying technology, and in particular to an exhaust chamber assembly. Background Technology

[0002] In pneumatic conveying and handling systems involving powdery or granular materials, precise control of vacuum or air pressure balance is crucial. Conventional equipment usually has an exhaust chamber assembly to achieve this function. However, the exhaust chamber assembly of the prior art focuses more on air pressure monitoring and regulation in its design, and its structure has inherent defects.

[0003] A typical approach is to place the exhaust channel at a high position in the drainage chamber. While this layout can effectively discharge gas and a small amount of liquid condensed on the exhaust channel wall, it lacks an effective drainage mechanism for the large area of ​​liquid condensed at the bottom of the drainage chamber.

[0004] Due to the lack of a reasonable liquid level control structure, this portion of condensate cannot be effectively captured and discharged by the exhaust channel. After accumulating to a certain height, it flows back into the main system through the holes at the bottom that connect to the air intake channel. This backflow phenomenon can cause a series of chain-reaction process problems such as caking and blockage after contacting materials, affecting the quality of the final product. At the same time, existing designs generally do not have dedicated collection and separation structures for fine solid impurities entrained in the air. These impurities enter the exhaust system with the airflow, further increasing the risk of clogging the exhaust channel and restricting the continuous and stable operation of the equipment. Utility Model Content

[0005] In order to reduce material contamination and caking caused by condensate backflow, and to reduce the possibility of the exhaust passage being blocked or clogged by solids, this application provides an exhaust chamber assembly.

[0006] The exhaust chamber assembly provided in this application adopts the following technical solution: An exhaust chamber assembly includes a drainage chamber, wherein an air inlet is provided at the bottom of the drainage chamber, and a boss is provided on the air inlet, the boss being arranged around the air inlet, and the height of the boss being higher than the height of the bottom plate of the drainage chamber. The side wall of the drainage chamber is connected to an exhaust pipe. The top surface of the boss is higher than the lower edge of the exhaust pipe. The end of the exhaust pipe away from the drainage chamber is connected to a slag removal hopper. The top of the slag removal hopper is provided with an air outlet, which is used to connect to a vacuum pump. When the exhaust chamber assembly is in operation, the drain chamber is sealed. At this time, gas flows in only from the inlet, flows through the exhaust pipe to the slag removal hopper, and is discharged from the outlet.

[0007] By adopting the above technical solution, the protrusion at the bottom of the drainage chamber is set around the air inlet, and the top surface of the protrusion is higher than the bottom wall of the drainage chamber and the lower edge of the exhaust pipe. This can effectively block the condensate accumulated in the drainage chamber, prevent the condensate from overflowing the air inlet and causing backflow, and allow the condensate to be discharged through the exhaust pipe first, reducing the problem of material caking and blockage caused by condensate backflow. At the same time, the fine solid impurities carried by the airflow enter the slag removal hopper with the airflow and settle and accumulate in the slag removal hopper, preventing impurities from blocking the exhaust pipe and ensuring the continuous and stable operation of the equipment.

[0008] Optionally, the drainage chamber includes a flow guide shell and an air intake pipe. A stepped groove is formed on the lower end face of the flow guide shell, and the air intake pipe is located in the stepped groove. The air intake pipe and the flow guide shell are bolted together, and the boss is located on the upper end face of the air intake pipe and is integrally formed with the air intake pipe.

[0009] By adopting the above technical solution, the stepped groove at the lower end of the guide shell can not only position the air intake pipe so that the stepped groove can accurately accommodate the air intake pipe, but also ensure that the upper end face of the air intake pipe completely covers the lower end face of the guide shell, avoiding the sealing effect due to installation deviation; the guide shell and the air intake pipe are connected by bolts, which not only ensures the connection is stable, but also facilitates disassembly and reduces the difficulty of maintenance.

[0010] Optionally, the flow guide shell is hinged with a first end cap, the size of which is larger than the size of the inner circumferential surface of the flow guide shell, and a sealing gasket is provided between the first end cap and the flow guide shell.

[0011] By adopting the above technical solution, the size of the first end cap is larger than the inner circumference of the guide shell, which can completely cover the opening of the guide shell. With the sealing gasket between the two, the drainage chamber can be effectively sealed, preventing external air from entering and affecting the system vacuum and ensuring exhaust efficiency. When the drainage chamber is under negative pressure, the pressure causes the first end cap to exert a stronger force on the sealing gasket and the guide shell, making the seal tighter. At the same time, the first end cap is hinged to the guide shell, which can quickly expose the inside of the drainage chamber when opened, making it convenient to clean condensate or impurities, thus balancing sealing performance and ease of maintenance.

[0012] Optionally, the upper end face of the slag removal hopper body is flush with the upper end face of the exhaust pipe, and the lower end face of the slag removal hopper body slopes downward from the exhaust pipe in a direction away from the exhaust pipe.

[0013] By adopting the above technical solution, the lower end of the slag removal bucket is tilted away from the exhaust pipe. Gravity is used to make solid impurities carried in the airflow quickly deposit to the bottom of the slag removal bucket, preventing solid impurities from accumulating and clogging the exhaust pipe, ensuring that the airflow enters the slag removal bucket smoothly, and reducing the risk of exhaust pipe blockage.

[0014] Optionally, a second end cap is provided at the end of the slag removal hopper away from the exhaust pipe, a sealing ring is provided between the second end cap and the slag removal hopper, and a locking member is provided on the slag removal hopper to lock the second end cap on the slag removal hopper.

[0015] By adopting the above technical solution, the locking component locks the second end cover onto the slag removal hopper, and together with the sealing ring, a reliable seal can be achieved for the slag removal hopper, preventing vacuum leakage and ensuring that the vacuum pump can pump air stably. When it is necessary to clean the impurities in the slag removal hopper, the second end cover can be opened by loosening the locking component. There is no need to disassemble the overall structure, which can quickly complete the cleaning of impurities and improve maintenance efficiency.

[0016] Optionally, the locking component includes a connecting plate, which is bolted to the second end cover. One end of the connecting plate is hinged to the slag removal hopper. A locking groove is provided at the end of the connecting plate away from the hinge point. An adjusting knob is hinged to the slag removal hopper. The adjusting knob can be flipped into the locking groove. When the adjusting knob is tightened, it presses against the connecting plate to lock the second end cover.

[0017] By adopting the above technical solution, the connecting plate is bolted to the second end cover and hinged to the slag removal hopper, so that the second end cover can be rotated around the hinge point with the connecting plate to achieve quick opening and closing; after the adjustment knob is rotated into the snap-fit ​​groove of the connecting plate and tightened, it can firmly press against the connecting plate and lock the second end cover. It can be operated without special tools, and the stability after locking is strong. It will not loosen even in the negative pressure environment of the vacuum pump, taking into account both the convenience of operation and the reliability of sealing.

[0018] Optionally, a pressure sensor is installed on the top of the slag removal hopper.

[0019] By adopting the above technical solution, the air pressure sensor at the top of the slag removal hopper can monitor the air pressure changes in the exhaust chamber group in real time, making it easier for operators to observe and handle, avoiding the impact of excessive air pressure on exhaust efficiency, or damage to the vacuum pump due to excessive negative pressure; real-time monitoring provides a basis for equipment maintenance and ensures the stability of system operation.

[0020] Optionally, a threaded hole is provided on the side wall of the first end cap, and an operating rod is threaded into the threaded hole.

[0021] By adopting the above technical solution, the threaded hole on the side wall of the first end cover is threadedly connected to the operating rod. When in use, the operating rod is installed, allowing the operator to open or close the first end cover with ease. When not in use, the operating rod can be disassembled and stored, saving space, improving operational convenience, and assisting in the quick cleaning of residual condensate or impurities in the drainage chamber.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The protrusion at the bottom of the drainage chamber surrounding the air inlet is higher than the bottom plate of the drainage chamber and the lower edge of the exhaust pipe. It can prevent condensate from overflowing the air inlet and flowing back into the main system, reducing the material caking and blockage caused by condensate backflow. At the same time, condensate can be discharged through the exhaust pipe first. Fine solid impurities carried by the airflow will enter the slag removal hopper with the airflow and settle and accumulate, avoiding impurities from clogging the exhaust pipe and ensuring continuous operation of the equipment. 2. The first end cap on the guide shell is larger than the inner circumference of the guide shell. With the help of the sealing gasket, it can achieve efficient sealing of the drainage chamber, preventing external air from entering and affecting the system vacuum. The seal will be tighter under negative pressure in the drainage chamber. The second end cap of the slag removal hopper is reliably sealed by locking parts and sealing rings to prevent vacuum leakage. At the same time, the first end cap is hinged to the guide shell and the second end cap can be flipped open and closed with the connecting plate. The end cap can be opened without disassembling the whole structure, which is convenient for cleaning the condensate in the drainage chamber and the impurities in the slag removal hopper, reducing maintenance difficulty. 3. The lower end of the slag removal hopper is inclined away from the exhaust pipe, which allows solid impurities to quickly settle to the bottom by gravity, reducing the accumulation of impurities at the connection between the exhaust pipe and the slag removal hopper; the air pressure sensor at the top of the slag removal hopper can monitor the air pressure changes in the exhaust chamber in real time, making it easy for operators to detect air pressure abnormalities caused by impurity accumulation in a timely manner, avoiding the impact of excessive air pressure on exhaust efficiency or damage to the vacuum pump due to excessive negative pressure, and providing a basis for equipment maintenance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is a schematic diagram illustrating the structure of the intake pipe in an embodiment of this application.

[0025] Figure 3 This is a schematic diagram illustrating the structure of the locking component in an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Drainage chamber; 11. Guide shell; 111. Stepped groove; 112. First annular groove; 113. Sealing gasket; 114. Connection port; 12. Air inlet pipe; 121. Air inlet; 122. Boss; 13. First end cap; 131. Threaded hole; 132. Operating lever; 2. Exhaust pipe; 21. Exhaust passage; 22. Second connector; 3. Slag removal hopper; 31. Frustum section; 32. Cylindrical section; 33. First connector; 331. Second annular groove; 34. Air outlet; 35. Second end cap; 36. Annular sealing ring; 37. Air pressure sensor; 4. Locking element; 41. Fixing plate; 42. Hinge plate; 43. Connecting plate; 431. Snap-fit ​​groove; 44. Adjustment knob. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-3This application will be described in further detail.

[0028] This application discloses an exhaust chamber assembly.

[0029] like Figure 1 and Figure 2 An exhaust chamber assembly includes a drainage chamber 1, which includes a guide shell 11 and an intake pipe 12. The guide shell 11 is a U-shaped structure formed by four side walls. A stepped groove 111 is formed along the inner circumference of the lower end face of the guide shell 11. The inner diameter of the stepped groove 111 is matched with the outer diameter of the top surface of the intake pipe 12. The intake pipe 12 is fixedly connected to the stepped groove 111 by bolts, which ensures a stable connection and facilitates disassembly and maintenance in the future. The upper opening of the air intake pipe 12 is the air intake port 121. The upper end face of the air intake pipe 12 is integrally formed with an annular boss 122. The boss 122 is arranged around the air intake port 121. The inner circumferential surface of the boss 122 is coplanar with the inner wall surface of the air intake port 121, and the height of the boss 122 is higher than the height of the plane where the upper end face of the air intake pipe 12 is located.

[0030] A first end cap 13 is hinged to the top surface of one side wall of the flow guide shell 11. The size of the first end cap 13 is larger than the size of the inner circumferential surface of the flow guide shell 11, and it can completely cover the upper opening of the flow guide shell 11. A first annular groove 112 is opened on the top surface of the flow guide shell 11, and a sealing gasket 113 is provided in the first annular groove 112. When the first end cap 13 covers the flow guide shell 11, the sealing gasket 113 is squeezed by the first end cap 13 and the flow guide shell 11 together to achieve the sealing of the drainage chamber 1. As the vacuum degree in the exhaust chamber group increases, the force of the first end cap 13 on the sealing gasket 113 becomes greater and greater. The first end cover 13 has a threaded hole 131 on the side away from the junction point. An operating rod 132 is threaded into the threaded hole 131. One end of the operating rod 132 is a threaded section, and the other end is a gripping section. The operator can easily flip the first end cover 13 by gripping the operating rod 132, so as to open the drain chamber 1 and clean the residual condensate or impurities inside.

[0031] A connection port 114 is provided on the side of the flow guide shell 11 near the hinge point of the first end cover 13. The lower edge of the connection port 114 is lower than the top surface of the boss 122, so as to ensure that the condensate accumulated in the drainage chamber 1 is discharged through the connection port 114 first before it overflows the top surface of the boss 122. An exhaust pipe 2 is threadedly connected to the side of the connection port 114 away from the boss 122. The hopper includes a slag removal hopper 3, the hopper body of which is composed of a frustum section 31 and a cylindrical section 32. The upper bottom surface of the frustum section 31 is integrally formed with a first connector 33. The end of the exhaust pipe 2 away from the guide shell 11 is integrally formed with a second connector 22. The first connector 33 and the second connector 22 are provided with a second annular groove 331 on the opposite side. The second annular groove 331 is used to fill the sealing ring. The first connector 33 and the second connector 22 are connected by a clamp. The first connector 33, the second connector 22, the exhaust pipe 2 and the connection port 114 together form an exhaust channel 21.

[0032] The upper end face of the slag removal hopper 3 is flush with the upper end face of the exhaust pipe 2, and the lower end face of the hopper body is inclined downward from the side of the first connector 33 away from the first connector 33, so that the fine solid impurities that enter the slag removal hopper 3 with the airflow can accumulate at the bottom of the slag removal hopper 3 under the action of gravity, preventing impurities from blocking the exhaust channel 21; the top of the slag removal hopper 3 is provided with an air outlet 34, which is used to connect to a vacuum pump to realize the suction of air in the exhaust chamber group.

[0033] The end of the slag removal hopper 3 furthest from the first connector 33 is an open structure. A second end cover 35 is provided at the open end. The size of the second end cover 35 is larger than the size of the open end. A U-shaped annular sealing ring 36 is provided circumferentially at the open end to effectively prevent gas leakage and ensure the vacuum degree of the system.

[0034] A locking element 4 is provided on the slag removal hopper 3 to lock the second end cover 35 onto the slag removal hopper 3; like Figure 3 The locking component 4 includes a fixed plate 41 and a hinge plate 42. The fixed plate 41 and the hinge plate 42 are located on both sides of the cylindrical section 32 of the slag removal hopper 3. A connecting plate 43 is hinged on the fixed plate 41. The center of the connecting plate 43 is bolted to the second end cover 35, so that the second end cover 35 can be flipped around the hinge point. A snap-fit ​​groove 431 is opened at the end of the connecting plate 43 away from the fixed plate 41. An adjustment knob 44 is hinged on the hinge plate 42. When the second end cover 35 needs to be closed, flip the connecting plate 43, thereby driving the second end cover 35 to abut against the sealing ring. Flip the adjusting knob 44 into the snap-fit ​​groove 431, tighten the adjusting knob 44 to lock the connecting plate 43, thereby locking the second end cover 35. The operation can be completed without additional tools, which is convenient and the connection is stable.

[0035] A pressure sensor 37 is also installed on the top of the slag removal hopper 3. The detection end of the pressure sensor 37 extends into the interior of the slag removal hopper 3. The dial displays the changes in air pressure in the exhaust chamber group in real time, which is convenient for operators to observe and operate, prevents accidents from going undetected in time, and ensures stable operation of the equipment.

[0036] The implementation principle of this application embodiment is as follows: When the exhaust chamber assembly is working, the vacuum pump draws air through the outlet 34, creating a negative pressure in the drain chamber 1 and the slag removal hopper 3. At this time, the first end cover 13 is tightly pressed against the guide shell 11 under the negative pressure, and the sealing gasket 113 is further squeezed, keeping the drain chamber 1 sealed. Gas flows into the drain chamber 1 from the inlet 121 of the inlet pipe 12, carrying condensate that accumulates in the drain chamber 1. Due to the obstruction of the boss 122, the condensate cannot overflow the inlet 121 and flow back. It can only enter the slag removal hopper 3 with the airflow when the water level reaches the lower edge of the exhaust channel 21. Solid impurities carried in the airflow reach the slag removal hopper 3 under the action of the airflow and settle to the bottom of the slag removal hopper 3 under their own gravity. Finally, the gas is drawn out by the vacuum pump through the outlet 34, realizing the functions of gas discharge, condensate drainage, and impurity separation, effectively reducing the risk of material caking and blockage of the exhaust channel 21 caused by condensate backflow.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An exhaust chamber assembly, characterized in that: Includes a drainage chamber (1), the bottom of which is provided with an air inlet (121), and a boss (122) is provided on the air inlet (121). The boss (122) is arranged around the air inlet (121), and the height of the boss (122) is higher than the height of the bottom plate inside the drainage chamber (1). The side wall of the drainage chamber (1) is connected to an exhaust pipe (2). The top surface of the boss (122) is higher than the lower edge of the exhaust pipe (2). The end of the exhaust pipe (2) away from the drainage chamber (1) is connected to a slag removal hopper (3). The top of the slag removal hopper (3) is provided with an air outlet (34). The air outlet (34) is used to connect to a vacuum pump. When the exhaust chamber assembly is in operation, the drain chamber (1) is sealed. At this time, gas flows in only from the air inlet (121), flows through the exhaust pipe (2) to the slag removal hopper (3), and is discharged from the air outlet (34).

2. The exhaust chamber assembly according to claim 1, characterized in that: The drainage chamber (1) includes a flow guide shell (11) and an air intake pipe (12). A stepped groove (111) is provided on the lower end face of the flow guide shell (11). The air intake pipe (12) is located in the stepped groove (111). The air intake pipe (12) and the flow guide shell (11) are bolted together. The boss (122) is located on the upper end face of the air intake pipe (12) and is integrally formed with the air intake pipe (12).

3. The exhaust chamber assembly according to claim 2, characterized in that: The flow guide shell (11) is hinged to a first end cap (13), the size of the first end cap (13) is larger than the size of the inner circumferential surface of the flow guide shell (11), and a sealing gasket (113) is provided between the first end cap (13) and the flow guide shell (11).

4. The exhaust chamber assembly according to claim 1, characterized in that: The upper end face of the slag removal hopper (3) is flush with the upper end face of the exhaust pipe (2), and the lower end face of the slag removal hopper (3) is inclined downward from the exhaust pipe (2) in a direction away from the exhaust pipe (2).

5. The exhaust chamber assembly according to claim 1, characterized in that: The slag removal hopper (3) is provided with a second end cap (35) at the end away from the exhaust pipe (2). A sealing ring is provided between the second end cap (35) and the slag removal hopper (3). A locking member (4) is provided on the slag removal hopper (3). The locking member (4) is used to lock the second end cap (35) on the slag removal hopper (3).

6. The exhaust chamber assembly according to claim 5, characterized in that: The locking component (4) includes a connecting plate (43), which is bolted to the second end cover (35). One end of the connecting plate (43) is hinged to the slag removal hopper (3). A snap-fit ​​groove (431) is provided at the end of the connecting plate (43) away from the hinge point. An adjusting knob (44) is hinged to the slag removal hopper (3). The adjusting knob (44) can be flipped into the snap-fit ​​groove (431). After the adjusting knob (44) is tightened, it presses against the connecting plate (43) to lock the second end cover (35).

7. The exhaust chamber assembly according to claim 1, characterized in that: A pressure sensor (37) is installed on the top of the slag removal hopper (3).

8. The exhaust chamber assembly according to claim 3, characterized in that: The first end cap (13) has a threaded hole (131) on its side wall, and an operating rod (132) is threaded into the threaded hole (131).

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