Plastic exhaust duct riser joint structure

Abstract

The utility model relates to the technical field of pipe fitting connection discloses plastic exhaust pipe riser joint structure, including the connecting main body, both ends of connecting main body all are connected with the connecting frame that sets up, the connecting frame includes the inner lining pipe frame and the outer pipe frame, be provided with the insertion slot between the inner lining pipe frame and the outer pipe frame, both sides surface inside the insertion slot all are connected with the sealing pad layer that sets up, all slidingly be provided with the piston ring in the insertion slot, the piston ring one side all are connected with the multiple connecting rods that set up, the utility model discloses can directly with the upper wind pipe and lower wind pipe are inserted and installed into the insertion slot, the inside sealing pad layer guarantees the connection compact type, utilize the effect guaranteeing the upper wind pipe and lower wind pipe and the connecting frame direct connection effect of negative pressure, need not help additional material and tool, simple operation effectively promotes the installation efficiency, through the clamping groove and the flow guide pipe line can flow guide the condensate water outside to the lower wind pipe, avoid the condensate water to cause the corrosion to the pipeline, guarantee the service life.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, specifically to the structure of a plastic exhaust pipe riser joint. Background Technology

[0002] For ease of transportation and installation, plastic exhaust ducts are typically constructed by directly connecting sections of ductwork together and then welding them to the plastic components. Over time, the welds at these joints crack, leading to leaks (condensation). Leaks at the joints of risers in chemical plant waste gas treatment systems, especially after spray towers (before treatment), often involve waste liquids. With increasingly stringent environmental regulations prohibiting leaks, directly re-welding the plastic is problematic. Due to plastic aging, the re-welded joints are prone to cracking again. While welding ensures a seal, it is cumbersome, requiring a circular operation along the pipe and necessitating additional materials and tools, thus reducing installation efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a plastic exhaust pipe riser joint structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: it includes a connecting body, and connecting frames are connected to both ends of the connecting body;

[0005] The connecting frame includes an inner liner tube frame and an outer tube frame. An installation slot is provided between the inner liner tube frame and the outer tube frame. Sealing gaskets are connected to both sides of the inner surface of the installation slot. A piston ring is slidably installed in the installation slot. Multiple sets of connecting rods are connected to one side of each piston ring. A connecting groove is opened on the surface of the connecting body. The other end of each connecting rod extends through into the connecting groove and is connected to a movable threaded ring. An adjusting ring is rotatably installed inside the connecting groove. A filter ring is connected to one side of the upper outer tube frame. Reinforcing hoops are connected to the opposite sides of the outer tube frames.

[0006] Preferably, the inner ring of the adjusting ring has an internal thread, and is threadedly connected to the movable threaded ring through the internal thread.

[0007] Preferably, a slot is provided on one side of the upper outer tube frame, the filter ring is placed in the slot, a flow guide pipe is provided at the bottom of the slot, the other end of the flow guide pipe is connected to the connecting body, and a one-way valve is connected to one end of the flow guide pipe.

[0008] Preferably, an upper air duct is connected to the upper socket, and a lower air duct is connected to the lower socket.

[0009] Preferably, the piston ring surface is fitted with multiple sets of sealing rings.

[0010] Preferably, the outer tube frame has an installation groove at its end, and the reinforcing hoop is clamped in the installation groove.

[0011] Preferably, the inner side of the inner lining tube frame is provided with multiple sets of reinforcing ribs.

[0012] In summary, the beneficial effects of this utility model are:

[0013] The upper and lower ducts can be directly plugged into the mounting slots via the connecting brackets at both ends. The internal sealing gasket ensures a tight connection. The adjusting ring can directly drive the two piston rings to move synchronously, utilizing negative pressure to ensure a direct connection between the upper and lower ducts and the connecting brackets. No additional materials or tools are required, making operation simple and effectively improving installation efficiency. The inner reinforcing ribs and the reinforcing hoops at both ends further ensure connection stability. The slots and guide pipes can guide external condensate into the lower duct, preventing corrosion and extending the service life of the pipes. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the connection structure of the plastic exhaust pipe riser joint of this utility model;

[0015] Figure 2 This is a side sectional view of the connection structure of the plastic exhaust pipe riser joint of this utility model;

[0016] Figure 3 This is an exploded structural diagram of the plastic exhaust pipe riser joint structure of this utility model;

[0017] Figure 4 This is a side sectional view of the plastic exhaust pipe riser joint structure of this utility model;

[0018] Figure 5 This is a partial structural diagram of the plastic exhaust pipe riser joint structure of this utility model.

[0019] In the diagram: 1. Connecting body; 2. Connecting frame; 21. Inner liner tube frame; 22. Outer tube frame; 23. Mounting slot; 24. Sealing gasket; 3. Piston ring; 4. Connecting rod; 5. Moving threaded ring; 51. Internal thread; 6. Adjusting ring; 61. Connecting groove; 7. Filter ring; 71. Slot; 8. Guide pipe; 9. Reinforcing hoop; 91. Mounting groove; 10. Reinforcing rib; 111. Upper air duct; 222. Lower air duct. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5 The present invention provides a technical solution: including a connecting body 1, with connecting frames 2 connected to both ends of the connecting body 1;

[0022] The connecting frame 2 includes an inner liner tube frame 21 and an outer tube frame 22. An installation slot 23 is provided between the inner liner tube frame 21 and the outer tube frame 22. Sealing gaskets 24 are connected to both sides of the inner surface of the installation slot 23. Piston rings 3 are slidably installed in the installation slot 23. Multiple sets of connecting rods 4 are connected to one side of the piston rings 3. A connecting groove 61 is opened on the surface of the connecting body 1. The other end of the connecting rod 4 extends through into the connecting groove 61 and is connected to a movable threaded ring 5. An adjusting ring 6 is rotatably installed inside the connecting groove 61. A filter ring 7 is connected to one side of the upper outer tube frame 22. Reinforcing hoops 9 are connected to the sides of the outer tube frames 22 that are far apart from each other. An upper air duct 111 is connected to the upper installation slot 23, and a lower air duct 222 is connected to the lower installation slot 23.

[0023] Reference Figure 5 As shown, the inner ring of the adjusting ring 6 has an internal thread 51, and is threadedly connected to the movable threaded ring 5 through the internal thread 51. The internal thread 51 is a bidirectional thread, which can drive the two movable threaded rings 5 ​​to move in opposite directions when the adjusting ring 6 is rotated, thereby driving the piston ring 3 to move in the mounting slot 23 through the connecting rod 4.

[0024] Reference Figure 2 and Figure 4 As shown, a slot 71 is provided on one side of the upper outer tube frame 22, and a filter ring 7 is placed in the slot 71. A guide pipe 8 is provided at the bottom of the slot 71, and the other end of the guide pipe 8 is connected to the connecting body 1. One end of the guide pipe 8 is connected to a one-way valve to prevent exhaust gas leakage. (This one-way valve structure is like the valve used to prevent the backflow of odors in a toilet drain. It automatically opens and closes by the pressure of the condensate itself. The valve opens when draining and automatically closes after emptying, forming a sealed barrier.) Since it is a mature technology, it is not described in detail in the instruction manual. The filter ring 7 is made of stainless steel wire. When the condensate on the surface of the upper air duct 111 flows downward, it can flow through the filter ring 7 into the slot 71 and then be guided to the lower air duct 222 through the guide pipe 8. At the same time, as a filter ring made of stainless steel wire, it can be disassembled, washed and reused after a period of use.

[0025] Reference Figure 4 As shown in the middle section, the piston ring 3 is connected to multiple sets of sealing rings on its surface. The upper air duct 111 and the lower air duct 222 are inserted into the mounting slot 23 until they abut against the piston ring 3. The sealing gaskets 24 on both sides can ensure the fit between the inner liner tube frame 21 and the outer tube frame 22 and the upper air duct 111 and the lower air duct 222, forming a sealed space. When the piston ring 3 moves downward, it can generate negative pressure, which tightly adsorbs the upper air duct 111 and the lower air duct 222 into the mounting slot 23. At the same time, lubricating oil or antifreeze can be pre-injected into the slot 23. After the upper air duct 111 and the lower air duct 222 are inserted into the mounting slot 23, the negative pressure generated by the piston ring 3 during the downward movement, and the internal lubricating oil or antifreeze can greatly reduce the influence of ambient temperature, while further ensuring the sealing performance.

[0026] Reference Figure 3 As shown, the outer pipe frame 22 has an installation groove 91 at its end, and the reinforcing hoop 9 is snapped into the installation groove 91. After the upper air duct 111 and the lower air duct 222 are connected to the connecting frame 2, the reinforcing hoop 9 is then snapped into the installation groove 91 to ensure the connection strength between the outer pipe frame 22 and the upper air duct 111 and the lower air duct 222 and to prevent deformation.

[0027] Reference Figure 4 As shown, multiple sets of reinforcing ribs 10 are provided on the inner side of the inner lining tube frame 21 to further ensure the connection strength between the connecting frame 2 and the upper air duct 111.

[0028] Working principle: When using this utility model, the reinforcing hoop 9 is first fitted onto one end of the upper air duct 111 and the lower air duct 222 to be installed. Then, the upper air duct 111 and the lower air duct 222 are inserted into the mounting slot 23. Then, the adjusting ring 6 is rotated through the threaded connection, which drives the two sets of moving threaded rings 5 ​​to move in opposite directions. The connecting rod 4 pulls the piston ring 3 to slide in the mounting slot 23. While sliding, a negative pressure space is generated between it and the upper air duct 111 and the lower air duct 222, thereby tightly connecting the upper air duct 111 and the lower air duct 222 to the connecting frame 2. After the connection is completed, the upper air duct 111 and the lower air duct 222 are inserted into the mounting slot 91 of the reinforcing hoop 9 to further ensure the connection stability. At the same time, the condensate generated on the surface of the upper air duct 111 flows downward and is filtered by the filter ring 7 into the slot 71, and then flows into the lower air duct 222 through the guide pipe 8, which achieves the guiding effect.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic exhaust pipe riser joint structure, comprising a connecting body (1), characterized in that: Both ends of the connecting body (1) are connected to connecting frames (2); The connecting frame (2) includes an inner tube frame (21) and an outer tube frame (22). An installation slot (23) is provided between the inner tube frame (21) and the outer tube frame (22). A sealing gasket (24) is connected to both sides of the inner surface of the installation slot (23). A piston ring (3) is slidably provided in the installation slot (23). Multiple sets of connecting rods (4) are connected to one side of the piston ring (3). A connecting groove (61) is opened on the surface of the connecting body (1). The other end of the connecting rod (4) extends through into the connecting groove (61) and is connected to a movable threaded ring (5). An adjusting ring (6) is rotatably provided inside the connecting groove (61). A filter ring (7) is connected to one side of the upper outer tube frame (22). A reinforcing hoop (9) is connected to the side of the outer tube frame (22) that is far apart from each other.

2. The plastic exhaust pipe riser joint structure according to claim 1, characterized in that: The inner ring of the adjusting ring (6) has an internal thread (51) and is threadedly connected to the movable threaded ring (5) through the internal thread (51).

3. The plastic exhaust pipe riser joint structure according to claim 1, characterized in that: A slot (71) is provided on one side of the upper outer tube frame (22), and the filter ring (7) is set in the slot (71). A flow guide pipe (8) is provided at the bottom of the slot (71), and the other end of the flow guide pipe (8) is connected to the connecting body (1). A one-way valve is connected to one end of the flow guide pipe (8).

4. The plastic exhaust pipe riser joint structure according to claim 1, characterized in that: An upper air duct (111) is connected to the upper slot (23), and a lower air duct (222) is connected to the lower slot (23).

5. The plastic exhaust pipe riser joint structure according to claim 1, characterized in that: The piston ring (3) is fitted with multiple sets of sealing rings.

6. The plastic exhaust pipe riser joint structure according to claim 1, characterized in that: The outer tube frame (22) has an installation groove (91) at its end, and the reinforcing hoop (9) is snapped into the installation groove (91).

7. The plastic exhaust pipe riser joint structure according to claim 1, characterized in that: Multiple sets of reinforcing ribs (10) are connected to the inner side of the inner lining tube frame (21).

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