Quick-release anti-falling device for injection conduit of bag-type dust collector
Through the combined structural design of the tail plate, base, clamping plate, and clamping bolts, and by employing the following technical application phrases: tail plate, base, clamping bolts, and limit holes, the problem of large workload or easy detachment during the disassembly and installation of the jet duct of the bag filter is solved. This achieves stable fixing of the jet duct, quick-blocking fixation, and rapid installation and disassembly of the jet duct, improving maintenance efficiency, preventing loosening of the duct during operation, and enhancing the stability and ease of operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIUZHOU IRON & STEEL
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-26
AI Technical Summary
The disassembly and installation of the jet duct of the bag filter can be labor-intensive or prone to falling off, which affects the operating efficiency of the equipment.
The device employs a combination structure of tail plate, base, clamping plate and clamping bolts. Through the fixing of bolts and nuts, combined with limiting holes and fixing pins, a stable connection of the blow tube is achieved, preventing loosening and facilitating quick disassembly.
It enables rapid installation and disassembly of the blow-through duct, improves maintenance efficiency, prevents the duct from loosening during operation, and enhances the stability and ease of operation of the equipment.
Smart Images

Figure CN224404704U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dust removal equipment technology, and in particular to a quick-release and anti-detachment device for the jet duct of a bag dust collector. Background Technology
[0002] Baghouse dust collectors are a type of dry, high-efficiency dust removal equipment that uses fiber filter media to capture solid particles in dust-laden gas. They are widely used in the field of industrial dust control.
[0003] When replacing filter bags in a baghouse dust collector, the jet duct of the back-flushing system must be disassembled to remove the filter bags. The jet ducts in these systems typically employ a segmented design, with the straight section connecting to the outlet bend of the air manifold using a socket connection. Each jet duct is secured with bolts via an L-shaped tail plate welded to its end and either a round or elongated hole. When using the round hole method, removing the jet duct fixing bolts during filter bag replacement is labor-intensive. When using the elongated hole method, the jet duct is susceptible to detachment due to the impact of the jet airflow, causing back-flushing failure and affecting dust collector operation. This problem urgently needs to be addressed. Utility Model Content
[0004] To address the aforementioned issues, this utility model provides a quick-release and anti-detachment device for the jet duct of a bag filter, which can effectively fix the jet duct and facilitate its disassembly and maintenance.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A quick-release and anti-detachment device for the jet cleaning ducts of a bag filter includes a dust collector grid plate and multiple jet cleaning ducts disposed above the grid plate. One end of each jet cleaning duct is equipped with a back-blowing air manifold, and the other end is a tail section. The device also includes a tail plate, a base, and a clamping plate.
[0007] The tail plate has an L-shaped structure, and one side of one end of the tail plate is fixedly connected to the tail.
[0008] One end of the base is fixedly connected to the dust collector grid plate, and the other end abuts against the side of each tail plate away from the tail end, so that the tail plate is mounted on the base.
[0009] The clamping plate is connected to the tail plate and the base by clamping bolts.
[0010] Furthermore, the clamping plate is located on the side of the tail plate facing away from the base, and at least two clamping bolts are provided, with the two clamping bolts spaced apart on the base. One end of the clamping bolt is fixedly connected to the base, and the other end slides through the tail plate and the clamping plate in sequence. The nut is threaded on the end of the clamping bolt away from the base, and the nut abuts against the clamping plate.
[0011] Furthermore, both the base and the clamping plate are channel steel, and the groove of the clamping plate faces the tail plate.
[0012] Furthermore, a support plate is provided at one end of the jet duct near the back-blowing air manifold and at the jet duct itself. One end of the support plate is fixedly connected to the dust collector grid plate, and the other end abuts against the jet duct.
[0013] Furthermore, the tail plate has a through-hole at one end away from the tail section, and the base has the same number of fixing pins as the jet duct, which can pass through the limiting hole.
[0014] Furthermore, the end of the limiting hole furthest from the tail is an open structure.
[0015] The beneficial effects of this utility model are:
[0016] 1. Under the action of the clamping bolts and nuts, the tail plate can be clamped and fixed between the clamping plate and the base. Since the spray pipe is fixedly connected to the tail plate, the spray pipe can be effectively fixed. When the spray pipe needs to be maintained, the clamping bolts and nuts can be removed and the clamping plate can be removed to disassemble the spray pipe. Compared with the traditional method of fixing a single pipe with a bolt and nut, this utility model is convenient to operate and can achieve quick installation and disassembly.
[0017] 2. The combination of the fixing pin and the limiting hole restricts the horizontal displacement of the spray guide tube. Simultaneously, the clamping plate restricts the vertical displacement of the spray guide tube, effectively preventing it from loosening. Furthermore, the limiting hole has an opening, allowing the spray guide tube to be pushed out after removing the clamping plate when disassembly is required, thus improving maintenance efficiency. Attached Figure Description
[0018] Figure 1 This is a structural schematic diagram of a preferred embodiment of the quick-release and anti-detachment device for the jet duct of a bag filter according to the present invention.
[0019] Figure 2 This is a schematic diagram of the quick-release and anti-detachment device for the jet duct of a bag filter dust collector according to a preferred embodiment of the present invention.
[0020] Figure 3 yes Figure 2 Sectional view at point AA.
[0021] Figure 4 yes Figure 2 Sectional view at point BB.
[0022] In the diagram, 1-dust collector grid plate, 11-jet duct, 111-backflush air manifold, 112-tail, 2-tail plate, 201-limiting hole, 3-base, 4-pressure plate, 41-pressure bolt, 42-nut, 5-support plate, 6-fixing pin. Detailed Implementation
[0023] 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.
[0024] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0025] 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 invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0026] Please also see Figures 1 to 4 The preferred embodiment of this bag filter jet duct quick-release anti-detachment device includes a dust collector grid plate 1 and multiple jet ducts 11 arranged above the dust collector grid plate 1. One end of the jet duct 11 is provided with a back-blowing air bag 111, and the other end is a tail 112. It also includes a tail plate 2, a base 3 and a pressing plate 4.
[0027] Tail plate 2 has an L-shaped structure, and one side of tail plate 2 is fixedly connected to tail section 112. Tail plate 2 is connected to the end face of tail section 112 by welding.
[0028] One end of the base 3 is fixedly connected to the dust collector grid plate 1, and the other end abuts against the side of each tail plate 2 away from the tail 112, so that the tail plate 2 is mounted on the base 3. The base 3 is connected to the dust collector grid plate 1 by welding.
[0029] The clamping plate 4 is connected to the tail plate 2 and the base 3 by clamping bolts 41 and nuts 42.
[0030] like Figure 1 , Figure 2 , Figure 3 As shown, the clamping plate 4 is located on the side of the tail plate 2 facing away from the base 3. At least two clamping bolts 41 are provided, and the two clamping bolts 41 are spaced apart on the base 3. One end of the clamping bolt 41 is fixedly connected to the base 3, and the other end slides through the tail plate 2 and the clamping plate 4 in sequence. The nut 42 is threaded on the end of the clamping bolt 41 away from the base 3, and the nut 42 abuts against the clamping plate 4.
[0031] In this embodiment, the clamping bolt 41 is M20, grade 8.8. Under the action of the clamping bolt 41 and nut 42, the tail plate 2 can be clamped and fixed between the clamping plate 4 and the base 3. Since the spray pipe 11 is fixedly connected to the tail plate 2, the spray pipe 11 is effectively fixed. When the spray pipe 11 needs to be maintained, the clamping bolt 41 and nut 42 can be removed, and the clamping plate 4 can be removed to disassemble the spray pipe 11. Compared with the traditional method of fixing a single pipe with a bolt and nut, this utility model is convenient to operate and can achieve quick installation and disassembly.
[0032] In this embodiment, both the base 3 and the clamping plate 4 are channel steel, with the slot of the clamping plate 4 facing the tail plate 2. The base 3 is made of 16# channel steel and Q235 material. The clamping plate 4 itself is relatively heavy. In the event that the clamping bolt 41 falls off, the clamping plate 4 can play a fixing role by its own weight, thereby increasing the overall operating effect and stability of the device.
[0033] In this embodiment, a support plate 5 is provided at one end of the jet duct 11 near the back-blowing air manifold 111 and at the other end of the jet duct 11. One end of the support plate 5 is fixedly connected to the dust collector grid plate 1, and the other end abuts against the jet duct 11. By providing the support plate 5, the jet duct 11 can be mounted on the dust collector grid plate 1.
[0034] like Figure 2 and Figure 4 As shown, the tail plate 2 has a through-hole 201 at the end away from the tail 112, and the base 3 has the same number of fixing pins 6 as the blow duct 11. The fixing pins 6 can be inserted into the limiting hole 201.
[0035] The fixing pin 6 is made of M12, 8.8 grade bolts. With the cooperation of the fixing pin 6 and the limiting hole 201, the horizontal displacement of the spray guide 11 can be restricted. At the same time, with the fixation of the clamping plate 4, the vertical displacement of the spray guide 11 can be restricted, effectively preventing the spray guide from loosening.
[0036] like Figure 2 As shown, the end of the limiting hole 201 away from the tail 112 is open. The limiting hole 201 is provided with an opening, so that when the blow-through duct 11 needs to be disassembled, the blow-through duct 11 can be pushed out after the clamping plate 4 is removed, thereby improving the maintenance efficiency of the blow-through duct 11.
[0037] The disassembly process of the blow-through conduit 11 in this embodiment is as follows: unscrew the nut 42 to remove the clamping bolt 41, remove the clamping plate 4, push the blow-through conduit 11 so that the fixing pin 6 leaves the limiting hole 201 through the opening of the limiting hole 201, thereby realizing the disassembly of the blow-through conduit 11.
Claims
1. A quick-release anti-detachment device for a bag filter jet duct, comprising a dust collector grid plate (1) and multiple jet ducts (11) disposed above the dust collector grid plate (1), wherein one end of each jet duct (11) is provided with a back-blowing air manifold (111), and the other end is a tail section (112), characterized in that, It also includes a tail plate (2), a base (3) and a clamping plate (4). The tail plate (2) has an L-shaped structure, and one side of one end of the tail plate (2) is fixedly connected to the tail (112); One end of the base (3) is fixedly connected to the dust collector grid plate (1), and the other end abuts against the side of each tail plate (2) away from the tail (112), so that the tail plate (2) is mounted on the base (3); The clamping plate (4) is connected to the tail plate (2) and the base (3) by clamping bolts (41) and nuts (42).
2. The quick-release anti-detachment device for the jet duct of a bag filter according to claim 1, characterized in that: The clamping plate (4) is located on the side of the tail plate (2) facing away from the base (3). There are at least two clamping bolts (41), and the two clamping bolts (41) are spaced apart on the base (3). One end of the clamping bolt (41) is fixedly connected to the base (3), and the other end is slidably passed through the tail plate (2) and the clamping plate (4) in sequence. The nut (42) is threaded on the end of the clamping bolt (41) away from the base (3), and the nut (42) abuts against the clamping plate (4).
3. The quick-release anti-detachment device for the jet duct of a bag filter according to claim 2, characterized in that: Both the base (3) and the clamping plate (4) are channel steel, and the slot of the clamping plate (4) faces the tail plate (2).
4. The quick-release anti-detachment device for the jet duct of a bag filter according to claim 1, characterized in that: The blow-through duct (11) is provided with a support plate (5) at one end near the back-blowing air bag (111) and the blow-through duct (11). One end of the support plate (5) is fixedly connected to the dust collector grid plate (1), and the other end abuts against the blow-through duct (11).
5. A quick-release anti-detachment device for a bag filter jet duct according to claim 1, characterized in that: The tail plate (2) has a through-hole (201) at one end away from the tail (112), and the base (3) has the same number of fixing pins (6) as the blow-through guide (11). The fixing pins (6) can be inserted into the limiting hole (201).
6. A quick-release anti-detachment device for a bag filter jet duct according to claim 5, characterized in that: The end of the limiting hole (201) away from the tail (112) is an open structure.