Stainless steel air pipe with telescopic function

Abstract

The utility model discloses a stainless steel air pipe with a telescopic function, and belongs to the technical field of air pipes, the stainless steel air pipe is used for ventilation, exhaust and air conditioning systems, the stainless steel air pipe comprises an outer pipe, two inner pipes are movably connected to the interior of the outer pipe, the two inner pipes are symmetrically arranged in the outer pipe, a lead screw is rotatably connected to the interior of the outer pipe, and the lead screw is rotatably connected to the interior of the outer pipe. A sliding groove is formed in the outer pipe, a sliding block is fixedly connected to one side of the outer wall of the inner pipe, the sliding block is slidably connected to the interior of the sliding groove, a limiting groove is formed in the outer pipe, and a rolling wheel is rotationally connected to the interior of the inner pipe and arranged on the other side of the outer wall of the inner pipe. When the stainless steel air pipe is spliced, the telescopic distance can be adjusted by rotating the lead screw, the lead screw rotates to drive the sliding block to move in the sliding groove and drive the inner pipe and the limiting pipe to slide in the outer pipe, meanwhile, the idler wheel rotates and translates in the limiting groove, the inner pipe extends outwards, and telescopic adjustment of the air pipe is facilitated.

Description

Technical Field

[0001] This application relates to the field of duct technology, and in particular to a stainless steel duct with telescopic function. Background Technology

[0002] Currently, stainless steel ducts are a type of pipe used in ventilation, exhaust, and air conditioning systems. They are mainly made of stainless steel and have characteristics such as corrosion resistance, high strength, and good sealing. In use, stainless steel ducts are usually spliced ​​together and installed in buildings.

[0003] However, existing stainless steel ducts have the following drawbacks: for example, during the splicing process, the existing stainless steel ducts are prone to insufficient distance, but adding another section of stainless steel duct would make the distance too long, and each section of stainless steel duct cannot be extended or retracted. Therefore, during the splicing and use of stainless steel ducts, it is impossible to adjust the length of each section of stainless steel duct according to the actual usage distance. Summary of the Invention

[0004] The purpose of this application is to enable the adjustment of the length of stainless steel ducts when splicing them according to actual usage requirements.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a stainless steel duct with telescopic function, comprising an outer tube, an inner tube movably connected inside the outer tube, two inner tubes being symmetrically arranged inside the outer tube, a lead screw rotatably connected inside the outer tube, a sliding groove being formed inside the outer tube, a slider fixedly connected to one side of the outer wall of the inner tube, the slider slidably connected inside the sliding groove, a limiting groove being formed inside the outer tube, a roller rotatably connected inside the inner tube, the roller being arranged on the other side of the outer wall of the inner tube, the roller movably connected inside the limiting groove, a limiting tube fixedly connected to the outer wall of the inner tube, the limiting tube slidably connected inside the outer tube.

[0006] In a further preferred embodiment, a connecting frame is fixedly connected to the end of the inner tube away from the limiting tube, and a connecting tube is installed on the outer wall of the connecting frame.

[0007] Further preferably, a second connecting frame is fixedly connected to one side of the outer wall of the connecting pipe, and the outer wall of the second connecting frame is in contact with the outer wall of the first connecting frame.

[0008] Further preferably, the outer wall of the second connecting frame is fixedly connected with a locking block, and two locking blocks are provided, which are symmetrically arranged at the upper and lower ends of the outer wall of the second connecting frame.

[0009] Preferably, the two card blocks are slidably connected inside the connecting frame one, and the connecting frame one is slidably connected with two locking pins.

[0010] In a further preferred embodiment, the upper ends of the two locking pins are fixedly connected to pull plates, and the two locking pins pass through the locking block at the upper end of the outer wall of the connecting frame.

[0011] In a further preferred embodiment, a spring is fitted on the outer wall of the locking pin, one end of the spring is fixedly connected to the inside of the pull plate, and the other end of the spring is fixedly connected to the inside of the connecting frame.

[0012] Further preferably, a splicing plate is fixedly connected to the other side of the outer wall of the connecting pipe, and the splicing plate has multiple mounting holes inside.

[0013] Compared with the prior art, the beneficial effects of this application are as follows:

[0014] (1) When the stainless steel duct needs to be extended and adjusted during the splicing process, the screw is rotated to drive the slider to slide in the inside of the groove. During the sliding of the slider, the inner tube and the limiting tube slide in the inside of the outer tube. At the same time, the roller moves. During the movement of the roller, the limiting slide and rotate in the inside of the limiting groove, thereby realizing the extension of the inner tube outward and realizing the effect of easy extension and adjustment of the stainless steel duct.

[0015] (2) During the splicing process, the splicing plates at both ends of each group of stainless steel air ducts are attached to each other, and bolts and nuts are used to pass through the installation holes and lock them in place. Each group of stainless steel air ducts is spliced ​​and fixed. When it is necessary to inspect or clean the inside of the stainless steel air duct, simply pull the pull plate upward to move the locking pin upward and disengage it from the inside of the locking block. Then, rotate the screw to move the inner tube and the connecting frame towards the middle position of the outer tube, so that the connecting frame disengages from the locking block. Then, the outer tube and the inner tube can be quickly removed for inspection or cleaning. Attached Figure Description

[0016] Figure 1 This is a front view of the stainless steel duct with telescopic function;

[0017] Figure 2 This is a rear view of the stainless steel duct with telescopic function;

[0018] Figure 3 This is a diagram of the screw structure of the stainless steel duct with telescopic function;

[0019] Figure 4 This is a structural diagram of the limiting tube of the stainless steel duct with telescopic function;

[0020] Figure 5 This is a diagram of the clip structure for a stainless steel duct with telescopic function.

[0021] In the diagram: 1. Outer tube; 101. Lead screw; 102. Slide groove; 103. Limiting groove; 2. Inner tube; 201. Slider; 202. Roller; 203. Limiting tube; 3. Connecting frame one; 301. Locking pin; 302. Pull plate; 303. Spring; 4. Connecting tube; 401. Connecting frame two; 402. Locking block; 403. Splicing plate; 404. Mounting hole. Detailed Implementation

[0022] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0024] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0025] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0026] like Figure 1-5The stainless steel duct with telescopic function shown includes an outer duct 1, with an inner duct 2 movably connected inside the outer duct 1. Two inner ducts 2 are symmetrically arranged inside the outer duct 1. A lead screw 101 is rotatably connected inside the outer duct 1, limiting its rotation within the outer duct 1. A sliding groove 102 is formed inside the outer duct 1. A slider 201 is fixedly connected to one side of the outer wall of the inner duct 2, slidably connected inside the sliding groove 102, and limited in its sliding motion within the sliding groove 102. The inner tube 1 has a limiting groove 103 inside. The inner tube 2 is rotatably connected to a roller 202. The roller 202 is limited to rotate inside the inner tube 2. The roller 202 is located on the other side of the outer wall of the inner tube 2. The roller 202 is movably connected to the inside of the limiting groove 103. The roller 202 is limited to rotate and can be limited to slide and translate inside the limiting groove 103. The outer wall of the inner tube 2 is fixedly connected to a limiting tube 203. The limiting tube 203 is slidably connected to the inside of the outer tube 1. The limiting tube 203 is limited to slide inside the outer tube 1.

[0027] A connecting frame 3 is fixedly connected to the end of the inner tube 2 away from the limiting tube 203. A connecting tube 4 is installed on the outer wall of the connecting frame 3. A connecting frame 401 is fixedly connected to one side of the outer wall of the connecting tube 4. The outer wall of the connecting frame 401 fits against the outer wall of the connecting frame 3. Two locking blocks 402 are fixedly connected to the outer wall of the connecting frame 401. The two locking blocks 402 are symmetrically arranged at the upper and lower ends of the outer wall of the connecting frame 401. The two locking blocks 402 are slidably connected inside the connecting frame 3. The locking blocks 402 are limited and locked inside the connecting frame 3. A locking pin 301 is slidably connected inside the connecting frame 3. There are two 301s. The upper ends of the two 301s are fixedly connected to the pull plate 302. The two 301s pass through the upper end of the outer wall of the connecting frame 2 401 and the locking block 402. The 301s limit and fix the locking block 402 inside the connecting frame 1 3. The outer wall of the 301s is fitted with a spring 303. One end of the spring 303 is fixedly connected to the inside of the pull plate 302, and the other end of the spring 303 is fixedly connected to the inside of the connecting frame 1 3. The spring 303 plays the role of automatic reset and support. The other side of the outer wall of the connecting tube 4 is fixedly connected to the splicing plate 403. The splicing plate 403 has multiple mounting holes 404 inside.

[0028] Working principle: When splicing stainless steel ducts for use, firstly, fix the splicing plate 403 at one end of a section of stainless steel duct inside the building, and use bolts and nuts to fix the splicing plate 403 to the building. Then, take another section of stainless steel duct, align the splicing plates 403 of the two sets of stainless steel ducts, and fix them together with bolts and nuts to complete the splicing. After the splicing is completed, the distance between each section of stainless steel duct needs to be adjusted according to the actual usage requirements. At this time, rotating the lead screw 101 drives the slider 201 to slide in the limited position inside the slide groove 102. During the sliding process, the slider 201 drives the inner tube 2 and the roller 202 to move synchronously inside the outer tube 1. During the movement, the roller 202 rotates and moves in the limited position groove 103, thereby allowing the inner tube 2 to move outward. The external extension of pipe 1 allows for adjustment of the distance between each section of stainless steel duct, facilitating the adjustment of the length of each section according to actual splicing distance requirements. This reduces the need for additional stainless steel ducts. After prolonged use, each section of stainless steel duct requires internal cleaning or maintenance. Pulling the pull plate 302 upwards moves the locking pin 301 upwards. Once the locking pin 301 disengages from the locking block 402, rotating the screw 101 causes the slider 201, inner pipe 2, and roller 202 to slide back towards the center of outer pipe 1. This allows the outer pipe 1 and inner pipe 2 to be removed for maintenance or cleaning. After maintenance and cleaning, they can be reinstalled in their original positions. This process can be repeated for disassembly, maintenance, or cleaning of each section of stainless steel duct without disassembling the connecting pipe 4, thus reducing disassembly and assembly time.

[0029] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A telescopic stainless steel duct comprising an outer tube (1), characterized in that: The inner tube (2) is movably connected to the outer tube (1), the two inner tubes (2) are symmetrically arranged in the outer tube (1), the outer tube (1) is rotatably connected with a screw rod (101), the outer tube (1) is provided with a sliding groove (102), the outer wall of the inner tube (2) is fixedly connected with a sliding block (201), the sliding block (201) is slidably connected in the sliding groove (102), the outer tube (1) is provided with a limiting groove (103), the inner tube (2) is rotatably connected with a roller (202), the roller (202) is arranged on the other side of the outer wall of the inner tube (2), the roller (202) is movably connected in the limiting groove (103), the outer wall of the inner tube (2) is fixedly connected with a limiting tube (203), the limiting tube (203) is slidably connected in the outer tube (1).

2. The telescopic stainless steel duct according to claim 1, wherein: The end of the inner tube (2) away from the limiting tube (203) is fixedly connected with a connecting frame one (3), and the outer wall of the connecting frame one (3) is provided with a connecting pipe (4).

3. The telescopic stainless steel duct according to claim 2, wherein: The outer wall of the connecting pipe (4) is fixedly connected with a connecting frame two (401), and the outer wall of the connecting frame two (401) is fitted with the outer wall of the connecting frame one (3).

4. The telescopic stainless steel air duct according to claim 3, wherein: The outer wall of the connecting frame two (401) is fixedly connected with a clamping block (402), the two clamping blocks (402) are symmetrically arranged on the upper and lower ends of the outer wall of the connecting frame two (401).

5. The telescopic stainless steel air duct according to claim 4, wherein: The two clamping blocks (402) are slidably connected in the connecting frame one (3), the connecting frame one (3) is slidably connected with a clamping pin (301), and the two clamping pins (301) are arranged.

6. The telescopic stainless steel air duct according to claim 5, wherein: The upper end of the two clamping pins (301) is fixedly connected with a pull plate (302), and the two clamping pins (301) penetrate the clamping blocks (402) on the upper end of the outer wall of the connecting frame two (401).

7. The telescopic stainless steel duct according to claim 6, wherein: The outer wall of the clamping pin (301) is sleeved with a spring (303), one end of the spring (303) is fixedly connected in the pull plate (302), and the other end of the spring (303) is fixedly connected in the connecting frame one (3).

8. The telescopic stainless steel duct of claim 2, wherein: The other side of the outer wall of the connecting pipe (4) is fixedly connected with a splicing plate (403), and a plurality of mounting holes (404) are formed in the splicing plate (403).

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