Folding air pipe for mine ventilation and dust removal system
By adopting a folded duct design with threaded engagement and spring limit bolt components in the mine ventilation and dust removal system, the problem of cumbersome screw nut fixing methods is solved, and the duct can be quickly fixed and efficiently installed.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 申艳
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-01
AI Technical Summary
In mine ventilation and dust removal systems, the existing screw nut fixing method for folded air ducts is cumbersome, increases installation time, and reduces work efficiency.
The folded duct design includes first and second connecting panels, mounting components, and fixing components. It achieves quick fixing through threaded engagement and spring limit bolt assembly, simplifying the installation process.
It improves the stability and installation efficiency of air ducts, simplifies the operation process, and shortens the installation time.
Smart Images

Figure CN224187594U_ABST
Abstract
Description
Folded ducts for mine ventilation and dust removal systems Technical Field
[0001] This utility model relates to the field of folding duct technology, specifically to folding ducts for mine ventilation and dust removal systems. Background Technology
[0002] The folded duct used in mine ventilation and dust removal systems is a ventilation device with a special structure and performance, mainly used for ventilation, dust removal and gas extraction in coal mines, tunnels and other places.
[0003] Folded ducts used in mine ventilation and dust removal systems are typically folded during transportation and storage to reduce floor space, but they need to be unfolded and secured at both ends during installation. The currently used screw-nut fixing method is cumbersome: installers must repeatedly adjust the position of the nuts on the screw to complete the fixation, which not only increases installation time but also reduces work efficiency. This complexity directly impacts the overall installation efficiency of the ventilation system.
[0004] Therefore, a folded duct is specifically proposed for use in mine ventilation and dust removal systems. Summary of the Invention
[0005] The purpose of this utility model is to provide a folded duct for a mine ventilation and dust removal system to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: a folded duct for a mine ventilation and dust removal system, comprising a folded duct body, with a first connecting panel and a second connecting panel respectively connected to both sides of the folded duct body. An installation component is welded to both sides of the top of the first and second connecting panels, and a fixing component is welded to both sides of the second connecting panel. The fixing component includes a first support rod, a first mounting groove is provided on one side of the first support rod, a second support rod is slidably installed inside the first mounting groove, a second mounting groove is provided on one side of the second support rod, a third support rod is slidably installed inside the second mounting groove, and a threaded rod is threadedly connected inside the third support rod via threaded engagement. A threaded hole is provided on both sides of the first connecting panel.
[0006] Preferably, the mounting assembly includes a sleeve, and a telescopic plate is slidably mounted inside the sleeve.
[0007] Preferably, a fixing plate is welded to the top of the telescopic plate, and the fixing plate has two fixing holes inside.
[0008] Preferably, the sleeve has a positioning hole inside, and the telescopic plate has multiple positioning holes at equal intervals inside.
[0009] Preferably, the first support rod and the second support rod are provided with a plurality of limiting holes at equal intervals on one side, and a spring limiting bolt assembly is installed inside the second support rod and the third support rod respectively.
[0010] Preferably, the inner wall of the first mounting groove is provided with a first limiting groove, and the interior of the second mounting groove is provided with a second limiting groove. The upper and lower sides of the second support rod are respectively limited and slidably installed inside the first limiting groove, and the upper and lower sides of the third support rod are respectively limited and slidably installed inside the second limiting groove.
[0011] Preferably, the spring limiting bolt assembly includes a plug, a sliding plate is fixedly sleeved on the outer side of the plug, the two ends of the two plugs respectively pass through the interior of the third support rod and the second support rod, and a pull ring is welded to one end of the plug.
[0012] Preferably, two spring support rods are fixed inside the third support rod and the second support rod respectively, and the two sides of the slide plate are slidably sleeved on the outside of the spring support rods, and one end of the plug is installed in conjunction with the limiting hole.
[0013] Compared with the prior art, this utility model provides a folded air duct for a mine ventilation and dust removal system, which has the following beneficial effects:
[0014] During installation and use, pull the first and second connecting panels to unfold the folded tube body. Then, fix it in the designated position using the mounting components installed on the top of the first and second connecting panels respectively. Extend one end of the third support rod to one side of the first connecting panel, and then rotate the threaded rod to install it into the threaded holes on both sides of the first connecting panel, thereby fixing the first and second connecting panels together and improving the stability of the duct. This fixing method is simple to operate, reduces installation time, and improves the installation efficiency of the entire ventilation system. Attached Figure Description
[0015] Figure 1 is a structural schematic diagram of the main body of this utility model;
[0016] Figure 2 is a top view of the structure of this utility model;
[0017] Figure 3 is a schematic diagram of the installation structure of the spring limit bolt assembly of this utility model;
[0018] Figure 4 is an enlarged structural schematic diagram of point A in Figure 1 of this utility model;
[0019] Figure 5 is an enlarged structural schematic diagram of point B in Figure 1 of this utility model.
[0020] In the diagram: 1. Folded tube body; 2. Fixing assembly; 201. First support rod; 202. First mounting groove; 203. First limiting groove; 204. Second mounting groove; 205. Third support rod; 206. Second limiting groove; 207. Second support rod; 208. Spring limiting bolt assembly; 209. Limiting hole; 2081. Insert bolt; 2082. Pull ring; 2083. Spring support rod; 2084. Slide plate; 3. Threaded rod; 4. First connecting panel; 5. Second connecting panel; 6. Mounting assembly; 601. Sleeve; 602. Positioning hole; 603. Telescopic plate; 604. Fixing plate; 605. Fixing hole. Detailed Implementation
[0021] 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.
[0022] Example 1: A first connecting panel 4 and a second connecting panel 5 are respectively connected to both sides of the folded tube body 1. An installation component 6 is welded to the top of the first connecting panel 4 and the second connecting panel 5 on both sides. A fixing component 2 is welded to both sides of the second connecting panel 5. The fixing component 2 includes a first support rod 201. A first mounting groove 202 is opened on one side of the first support rod 201. A second support rod 207 is slidably installed inside the first mounting groove 202. A second mounting groove 204 is opened on one side of the second support rod 207. A third support rod 205 is slidably installed inside the second mounting groove 204. A threaded rod 3 is threadedly connected inside the third support rod 205. A threaded hole is opened on both sides of the first connecting panel 4.
[0023] The first support rod 201 and the second support rod 207 are provided with multiple limiting holes 209 at equal intervals on one side, and a spring limiting bolt assembly 208 is installed inside the second support rod 207 and the third support rod 205 respectively.
[0024] The inner wall of the first mounting groove 202 is provided with a first limiting groove 203, and the interior of the second mounting groove 204 is provided with a second limiting groove 206. The upper and lower sides of the second support rod 207 are respectively limited and slidably installed inside the first limiting groove 203, and the upper and lower sides of the third support rod 205 are respectively limited and slidably installed inside the second limiting groove 206.
[0025] The spring limit bolt assembly 208 includes a bolt 2081, and a sliding plate 2084 is fixedly sleeved on the outer side of the bolt 2081. The two ends of the two bolts 2081 pass through the interior of the third support rod 205 and the second support rod 207 respectively. A pull ring 2082 is welded to one end of the bolt 2081.
[0026] Two spring support rods 2083 are fixed inside the third support rod 205 and the second support rod 207 respectively, and the two sides of the slide plate 2084 are slidably sleeved on the outside of the spring support rods 2083. One end of the plug 2081 is fitted with the limiting hole 209.
[0027] Specifically, as shown in Figures 1, 2, 3, and 4, when the entire assembly is being stored and transported, one end of the second support rod 207 is fully inserted into the first mounting groove 202, and then one end of the third support rod 205 is fully stored into the second mounting groove 204. By pulling the spring limit bolt assembly 208, one end of the spring limit bolt assembly 208 is inserted into the limit hole 209, thus fixing the second support rod 207 inside the first mounting groove 202 and the third support rod 205 inside the second mounting groove 204. Then, the folded tube body 1 is folded and stored. The threaded rod 3 installed inside the third support rod 205 is rotated and installed into the threaded grooves on both sides of the first connecting panel 4 to fix the duct in its stored state, preventing damage from automatic unfolding of the duct during transport. During installation and use, firstly, the threaded rod 3 is rotated out from the threaded grooves on both sides of the first connecting panel 4. Then, the first connecting panel 4 and the second connecting panel 5 are pulled to unfold the folded tube body 1. Then, the folded tube body 1 is unfolded by pulling the first connecting panel 4 and the second connecting panel 5 respectively. The mounting assembly 6 installed on the top of the second connecting panel 5 is fixed in the designated position. Then, the spring limiting bolt assembly 208 installed inside the third support rod 205 and the second support rod 207 is pulled to remove one end of the plug 2081 from the limiting hole 209. The second support rod 207 and the third support rod 205 are slid so that one end of the plug 2081 installed inside the second support rod 207 is inserted into the limiting hole 209 at the designated position on one side of the first support rod 201. At the same time, one end of the plug 2081 installed inside the third support rod 205 is inserted into the limiting hole 209 at the designated position on one side of the second support rod 207, thereby fixing it in place. This allows one end of the third support rod 205 to extend to one side of the first connecting panel 4. The threaded rod 3 is then rotated to install into the threaded holes on both sides of the first connecting panel 4, thereby fixing the first connecting panel 4 and the second connecting panel 5 together, improving the stability of the duct. This fixing method is simple to operate, reduces installation time, and improves the installation efficiency of the entire ventilation system.
[0028] Example 2: The mounting component 6 includes a sleeve 601, and a telescopic plate 603 is slidably installed inside the sleeve 601. A fixing plate 604 is welded to the top of the telescopic plate 603, and two fixing holes 605 are opened inside the fixing plate 604. A positioning hole 602 is opened inside the sleeve 601, and multiple positioning holes 602 are opened at equal intervals inside the telescopic plate 603.
[0029] Specifically, as shown in Figures 1, 2, and 5, when the first connecting panel 4 and the second connecting panel 5 are installed at the designated positions using the mounting assembly 6, the telescopic plate 603 can be controlled to slide up and down inside the sleeve 601. Then, bolts are used to simultaneously pass through the positioning holes 602 inside the sleeve 601 and the telescopic plate 603 to fix the height of the telescopic plate 603. Finally, bolts are used to fix the fixing plate 604 to the wall of the mine by passing through the fixing hole 605, which improves the flexibility of installation.
[0030] Working principle: During use and installation, firstly, rotate and remove the threaded rod 3 from the threaded grooves on both sides of the first connecting panel 4. Then, pull the first connecting panel 4 and the second connecting panel 5 to unfold the folding tube body 1. Next, fix it to the designated position using the mounting components 6 installed on the top of the first connecting panel 4 and the second connecting panel 5 respectively. When the first connecting panel 4 and the second connecting panel 5 are installed in the designated position using the mounting components 6, the telescopic plate 603 can be controlled to slide up and down inside the sleeve 601. Then, use bolts to simultaneously penetrate the positioning holes 602 inside the sleeve 601 and the telescopic plate 603 to fix the height of the telescopic plate 603. Finally, use bolts to fix the fixing plate 604 to the mine wall by penetrating the fixing hole 605, thus improving the flexibility of installation. Then, pull the third support rod 205 and the second support rod 207 respectively. The installed spring-loaded stopper assembly 208 allows one end of the plug 2081 to be removed from the limiting hole 209. Sliding the second support rod 207 and the third support rod 205 causes one end of the plug 2081 installed inside the second support rod 207 to be inserted into the limiting hole 209 at a designated position on one side of the first support rod 201. Simultaneously, one end of the plug 2081 installed inside the third support rod 205 is inserted into the limiting hole 209 at a designated position on one side of the second support rod 207, thus securing the installation. This allows one end of the third support rod 205 to extend to one side of the first connecting panel 4. Rotating the threaded rod 3 allows it to be installed into the threaded holes on both sides of the first connecting panel 4, thereby fixing the first connecting panel 4 and the second connecting panel 5 together, improving the stability of the ductwork. This fixing method is simple to operate, reduces installation time, and improves the installation efficiency of the entire ventilation system.
[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A folded duct for a mine ventilation and dust removal system, comprising a folded duct body (1), characterized in that: The folded tube body (1) is connected to a first connecting panel (4) and a second connecting panel (5) on both sides respectively. An installation component (6) is welded to the top of the first connecting panel (4) and the second connecting panel (5) respectively. A fixing component (2) is welded to the two sides of the second connecting panel (5) respectively. The fixing component (2) includes a first support rod (201). A first mounting groove (202) is opened on one side of the first support rod (201). A second support rod (207) is slidably installed inside the first mounting groove (202). A second mounting groove (204) is opened on one side of the second support rod (207). A third support rod (205) is slidably installed inside the second mounting groove (204). A threaded rod (3) is connected to the inside of the third support rod (205) by thread engagement. A threaded hole is opened on both sides of the first connecting panel (4).
2. The folded duct for a mine ventilation and dust removal system according to claim 1, characterized in that: The mounting assembly (6) includes a sleeve (601), and a telescopic plate (603) is slidably mounted inside the sleeve (601).
3. The folded duct for a mine ventilation and dust removal system according to claim 2, characterized in that: A fixing plate (604) is welded to the top of the telescopic plate (603), and two fixing holes (605) are opened inside the fixing plate (604).
4. The folded duct for a mine ventilation and dust removal system according to claim 3, characterized in that: The sleeve (601) has a positioning hole (602) inside, and the telescopic plate (603) has multiple positioning holes (602) at equal intervals inside.
5. The folded duct for a mine ventilation and dust removal system according to claim 1, characterized in that: The first support rod (201) and the second support rod (207) are provided with multiple limiting holes (209) at equal intervals on one side, and a spring limiting bolt assembly (208) is installed inside the second support rod (207) and the third support rod (205).
6. The folded duct for a mine ventilation and dust removal system according to claim 1, characterized in that: The inner wall of the first mounting groove (202) is provided with a first limiting groove (203), and the interior of the second mounting groove (204) is provided with a second limiting groove (206). The upper and lower sides of the second support rod (207) are respectively limited and slidably installed inside the first limiting groove (203), and the upper and lower sides of the third support rod (205) are respectively limited and slidably installed inside the second limiting groove (206).
7. The folded duct for a mine ventilation and dust removal system according to claim 5, characterized in that: The spring limit bolt assembly (208) includes a plug (2081), and a sliding plate (2084) is fixedly sleeved on the outer side of the plug (2081). The two ends of the two plugs (2081) respectively pass through the interior of the third support rod (205) and the second support rod (207). A pull ring (2082) is welded to one end of the plug (2081).
8. The folded duct for a mine ventilation and dust removal system according to claim 7, characterized in that: The third support rod (205) and the second support rod (207) are respectively fixed with two spring support rods (2083), and the two sides of the slide plate (2084) are slidably sleeved on the outside of the spring support rods (2083). One end of the plug (2081) is fitted with the limiting hole (209).