Connecting pipe sleeve of assembly type multi-channel exhaust pipeline

Abstract

The utility model discloses a connecting pipe sleeve of an assembly type multi-channel exhaust pipeline, which comprises a square connecting pipe sleeve, the connecting pipe sleeve is composed of an outer frame and a supporting partition plate, the shape of the supporting partition plate is the same as that of the cross section of a vertical partition plate in the exhaust pipeline, and the supporting partition plate is transversely fixed in the outer frame. The supporting partition plate is clamped between vertical partition plates of an upper exhaust pipeline and a lower exhaust pipeline, two fixed connecting pieces with positioning screws are welded to the left side of the outer frame, and two height-adjustable adjusting supports are arranged on the right side of the outer frame. Compared with the prior art, through the design of the supporting partition plates, connection between the multi-channel upper exhaust pipeline and the multi-channel lower exhaust pipeline is achieved, the overall structural strength of the outer frame can be improved, deformation of the outer frame due to external force is avoided, original steel bars are replaced with the fixed connecting pieces and the adjusting supports for erection, and leveling of the connecting pipe sleeves can be easily achieved; construction is convenient and fast, and it is ensured that the assembling requirement of the multi-channel exhaust pipeline is met.

Description

Technical Field

[0001] This utility model relates to the field of building exhaust ducts, and in particular to a connecting sleeve for a prefabricated multi-channel exhaust pipe. Background Technology

[0002] Kitchen and bathroom exhaust pipes in prefabricated residential buildings are usually located in the corners of kitchens or bathrooms in multi-story buildings. They are used for the centralized discharge of kitchen fumes and bathroom exhaust gases, collecting kitchen fumes and exhaust gases through the exhaust pipes and then discharging them from the roof vents.

[0003] Currently, the assembly process for exhaust pipes involves first installing a connecting pipe sleeve on the flue opening of the floor slab, then placing the exhaust pipe on the connecting pipe sleeve and connecting it to the exhaust pipe on the lower floor. The flue opening is then supported, and finally, concrete is applied to fill and seal the opening, completing the assembly of the upper and lower exhaust pipes. When installing the connecting pipe sleeve, steel reinforcement holes are typically drilled on both sides of the sleeve, and two parallel steel bars are inserted through it to support the sleeve on the flue opening of the floor slab. The disadvantages of this method are: 1. Because the connecting pipe sleeve needs to bear the weight of the exhaust pipe, the bottom of the exhaust pipe is placed directly on the upper surface of the connecting pipe sleeve, supported by the sleeve and the reinforcing steel bars. Therefore, the bottom of the exhaust pipe is prone to shifting relative to the upper surface of the connecting pipe sleeve, affecting the alignment of the upper and lower exhaust pipes. 2. Since the floor slab surface is not completely flat, the connecting pipe sleeve often tilts after being erected by steel bars, and the level cannot be adjusted. This results in a larger gap between the connecting pipe sleeve and the exhaust pipe downstairs, which is not conducive to plastering work.

[0004] Our company has designed a prefabricated residential kitchen and bathroom exhaust pipe, see [link / reference] Figure 3 The exhaust duct is equipped with a Y-shaped vertical baffle, which divides the exhaust duct into a left main exhaust duct, a right main exhaust duct, and a central secondary exhaust duct. The left and right main exhaust ducts operate independently without affecting each other. The secondary exhaust duct is further divided into independent exhaust ducts by a guide baffle, effectively preventing smoke from affecting other floors and preventing smoke from the lower floors from entering the upper floors through the exhaust duct, thus effectively preventing smoke odor from spreading. When assembling the exhaust ducts for the upper and lower floors, connecting pipe sleeves are still required for connection. The structure of the connecting pipe sleeves is described in [reference needed]. Figure 4 Its structure is similar to existing technology, which also involves inserting two parallel steel bars and erecting them on the flue opening of the floor slab for connecting the upper and lower exhaust pipes. It also has the aforementioned technical problems. In addition, the design of this connecting sleeve also needs to consider the connection problem between the Y-shaped partitions in the upper and lower exhaust pipes. Therefore, it is urgent to improve the Y-shaped connecting sleeve. Utility Model Content

[0005] The purpose of this utility model is to provide a connecting sleeve for a prefabricated multi-channel exhaust pipe that solves the above-mentioned problems.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a connecting sleeve for an assembled multi-channel exhaust pipe, comprising a square connecting sleeve, the connecting sleeve being composed of an outer frame and a supporting partition, the shape of the supporting partition being the same as the cross-sectional shape of the vertical partition inside the exhaust pipe, and being horizontally fixed within the outer frame, the supporting partition being clamped between the vertical partitions of the upper and lower exhaust pipes, two fixing connecting pieces with positioning screws being welded to the left side of the outer frame, and two height-adjustable adjusting brackets being provided on the right side of the outer frame.

[0007] Preferably, the adjusting bracket is in the shape of an inverted L, and the vertical part of the adjusting bracket has a vertically formed strip hole. The adjusting bracket is fixed to the outside of the outer frame by locking bolts and locking nuts that match the strip hole, and the horizontal part of the adjusting bracket overlaps the floor slab.

[0008] Preferably, when the locking bolt slides in the middle of the slot, the horizontal part of the adjusting bracket is at the same horizontal height as the positioning screw.

[0009] Preferably, the nut of the locking bolt is located outside the outer frame, and the bolt shank passes through the strip hole and is laterally positioned inside the outer frame. The locking nut is located inside the outer frame and is threadedly connected to the bolt shank.

[0010] Preferably, the outer diameter of the connecting sleeve is larger than the outer diameter of the exhaust pipe, the exhaust pipe is placed on the connecting sleeve, the supporting partition is Y-shaped and its thickness is the same as the thickness of the outer frame, and the three ends of the Y-shaped supporting partition are welded to the inner side of the outer frame.

[0011] Preferably, the inner diameter of the connecting sleeve is the same as the outer diameter of the exhaust pipe, and it is fitted between the exhaust pipes of the upper and lower floors. The supporting partition is Y-shaped and its thickness is less than that of the outer frame. The three ends of the Y-shaped supporting partition are all welded to the inner waist of the outer frame.

[0012] Preferably, the inner side of the outer frame is provided with a limiting strip, and the upper and lower end faces of the limiting strip are flush with the upper and lower surfaces of the supporting partition.

[0013] Preferably, the locking bolt is located at the waist of the outer frame and passes through the limiting strip.

[0014] Preferably, the outer frame is fixed to the wall by positioning screws on the fixing connecting piece.

[0015] Preferably, both the outer frame and the supporting partition are made of stainless steel.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] (1) This utility model achieves the connection between the upper and lower exhaust pipes of multiple channels through the design of the supporting partition, and can increase the overall structural strength of the outer frame and prevent it from deforming due to external forces.

[0018] (2) This utility model replaces the original steel bars for erection by using fixed connecting plates and adjusting brackets. The wall is connected by positioning screws on the fixed connecting plates to achieve the installation height limit of the connecting pipe sleeve. Then, the adjusting bracket on the other side is attached to the floor slab. By adjusting the height of the connecting pipe sleeve on the adjusting bracket, the leveling of the connecting pipe sleeve can be easily achieved. The construction is convenient and quick, ensuring that it meets the assembly requirements of multi-channel exhaust pipes.

[0019] (3) The support partition can also support the exhaust pipe. It can realize the design of the jacket-type connection pipe sleeve. When the upper and lower exhaust pipes are connected and assembled, there is no need to align them. Just put it in, which is very convenient.

[0020] (4) The setting of the limit strip can share the pressure of the support partition and avoid the weld joint from breaking. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the direct-connection pipe sleeve structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the outer sleeve structure of this utility model;

[0023] Figure 3 This is a structural diagram of our company's existing Y-shaped exhaust pipe;

[0024] Figure 4 This is a structural diagram of our company's existing Y-shaped connecting pipe sleeve.

[0025] In the diagram: 1. Outer frame; 2. Supporting partition; 3. Fixing connecting piece; 4. Positioning screw; 5. Adjusting bracket; 6. Strip hole; 7. Locking bolt; 8. Locking nut; 9. Limiting strip; 10. Exhaust pipe; 11. Reinforcing bar. Detailed Implementation

[0026] This utility model is designed based on the exhaust pipe 10 with a Y-shaped vertical partition developed by our company, but it is not limited to the Y-shaped support partition 2. Support partitions 2 of other shapes are also applicable. This embodiment takes the Y-shaped support partition 2 as an example. The utility model will be further described below:

[0027] A connecting sleeve for a prefabricated multi-channel exhaust pipe 10 includes a square connecting sleeve composed of an outer frame 1 and a supporting partition 2. The supporting partition 2 has the same cross-sectional shape as the vertical partition inside the exhaust pipe 10. The supporting partition 2 is horizontally arranged inside the outer frame 1, and its ends are welded to the inner side of the outer frame 1. Two fixing connecting pieces 3 with positioning screws 4 are welded to the left side of the outer frame 1. The outer frame 1 is fixed to the wall by the positioning screws 4 on the fixing connecting pieces 3. Two height-adjustable brackets 5 are provided on the right side of the outer frame 1. The supporting partition 2 is clamped between the vertical partitions of the upper and lower exhaust pipes 10.

[0028] This utility model achieves the connection between the upper and lower exhaust pipes 10 of multiple channels through the design of the supporting partition 2. Moreover, the supporting partition 2 can increase the overall structural strength of the outer frame 1 and prevent it from deforming due to external forces.

[0029] During the installation of existing connecting pipe sleeves, since the exhaust pipe 10 is usually located close to the wall, typically in a right-angle corner of the kitchen with both sides against the wall, when installing multi-channel exhaust pipes 10, the exhaust pipes 10 on the upper and lower floors need to be fully connected. Therefore, it is necessary to first determine the installation height of the connecting pipe sleeve and drill two installation holes at the installation height position in the wall. Then, one end of the reinforcing bar 11 is inserted into the installation hole, and the other end of the reinforcing bar 11 is directly placed on the floor slab. Since the surface of the floor slab is not completely flat, and there are also errors in the height during the pouring process, the connecting pipe sleeve will be tilted. It is necessary to adjust the floor surface during construction, which is very troublesome. If the floor surface is lower than the installation height of the connecting pipe sleeve, it can be leveled by adding shims under the reinforcing bar 11. If the floor slab is higher than the installation height of the connecting pipe sleeve, it can only be leveled by thinning the floor surface, which is very troublesome. Many workers even directly seal it with plaster before the height is fully adjusted. However, for multi-channel exhaust pipes 10 with internal vertical baffles, if the connecting pipe sleeve is not leveled, it will be difficult to separate the supporting baffle 2 from the vertical baffle, which can easily cause air leakage between the channels in the upper and lower exhaust pipes 10.

[0030] Therefore, this utility model replaces the original steel bar 11 with a fixed connecting piece 3 and an adjusting bracket 5 for erection. The wall is connected by the positioning screw 4 on the fixed connecting piece 3 to achieve the installation height limit of the connecting pipe sleeve. Then, the adjusting bracket 5 on the other side is attached to the floor slab. By adjusting the height of the connecting pipe sleeve on the adjusting bracket 5, the leveling of the connecting pipe sleeve can be easily achieved. The construction is convenient and quick, ensuring that it meets the assembly requirements of the multi-channel exhaust pipe 10. With the design of the supporting partition 2, the connection between the upper and lower exhaust pipes 10 of the multi-channel is realized, avoiding air leakage between the channels in the upper and lower exhaust pipes 10.

[0031] To achieve leveling of the connecting pipe sleeve, an adjusting bracket 5 was designed. The adjusting bracket 5 is inverted L-shaped, with a vertical slot 6. The adjusting bracket 5 is fixed to the outside of the outer frame 1 by locking bolts 7 and locking nuts 8 that match the slot 6. The horizontal part of the adjusting bracket 5 overlaps the floor slab. The slot 6 allows the locking bolts 7 to slide on the adjusting bracket 5. After the connecting pipe sleeve is leveled, the locking nuts 8 are tightened, which is very convenient. When the locking bolts 7 slide in the middle of the slot 6, the horizontal part of the adjusting bracket 5 is at the same horizontal height as the positioning screw 4. This ensures that the connecting pipe sleeve can be leveled regardless of whether the floor slab surface error increases or decreases. By adjusting the design of the bracket 5, this utility model can be installed regardless of whether the connecting pipe sleeve is installed below or above the floor surface. During installation, simply install the connecting pipe sleeve on the top of the lower exhaust pipe 10, first determine the installation hole position of the positioning screw 4, and then adjust the height of the other end on the adjustment plate, which is very convenient.

[0032] Currently available pipe fittings include direct-connection types, where the exhaust pipe 10 is directly aligned and placed on the surface of the fitting, with the gaps sealed by plastering. This invention, through the installation of the fixed connecting piece 3 and the adjusting bracket 5, distributes the weight of the upper exhaust pipe 10 onto the floor slab, thus supporting it. When installing the upper exhaust pipe 10, it can be directly placed on the upper surface of the outer frame 1, achieving the installation and assembly of the exhaust pipe 10. After installation, plastering is performed around it. The specific solution is as follows (see details). Figure 1 :

[0033] Since the installation of the positioning screw 4 on the fixed connecting piece 3 will cause obstruction, the outer diameter of the connecting sleeve needs to be made larger. Therefore, the outer diameter of the connecting sleeve is larger than the outer diameter of the exhaust pipe 10 so that the exhaust pipe 10 can be placed on the connecting sleeve. The supporting partition 2 is Y-shaped, and the thickness between the upper and lower surfaces is the same as the thickness of the outer frame 1. The three ends of the Y-shaped supporting partition 2 are welded to the inner side of the outer frame 1. After the connecting sleeve is leveled, the upper exhaust pipe 10 is aligned with the connecting sleeve and placed on the connecting sleeve. The exhaust pipes 10 of each floor can be installed in this way.

[0034] Furthermore, since the supporting partition 2 also serves a supporting function, the connecting pipe sleeve can be designed as an outer sleeve structure, which provides better sealing and facilitates alignment between the upper and lower exhaust pipes 10. The specific solution is as follows (see details). Figure 2 :

[0035] The inner diameter of the connecting sleeve is the same as the outer diameter of the exhaust pipe 10, and it is fitted between the exhaust pipes 10 of the upper and lower floors. The supporting partition 2 is Y-shaped, and the three ends of the Y-shaped supporting partition 2 are welded to the inner waist of the outer frame 1, realizing the countersunk design of the upper and lower surfaces of the Y-shaped supporting partition 2. When assembling the upper and lower exhaust pipes 10, the upper end of the lower exhaust pipe 10 and the lower end of the upper exhaust pipe 10 can be embedded in the connecting sleeve. By fitting them with the connecting sleeve, it has a better sealing effect. Moreover, the alignment is completed after installation, which can avoid a large amount of air leakage between the channels due to the misalignment of the Y-shaped supporting partition 2.

[0036] Meanwhile, the design of the supporting partition 2 can serve as a load-bearing component for the upper exhaust pipe 10, transferring its weight to the floor slab through the outer frame, fixed connecting piece 3, and adjusting bracket 5. Considering the possibility of breakage at the welded joint of the supporting partition 2, a limiting strip 9 is provided on the inner side of the outer frame 1 for the heavier exhaust pipe 10. The upper and lower end faces of the limiting strip 9 are flush with the upper and lower surfaces of the supporting partition 2. When the upper exhaust pipe 10 is placed inside the connecting pipe sleeve, the limiting strip 9 can also play a load-bearing role to reduce the load on the supporting partition 2.

[0037] As a preferred option, the limiting strips 9 can be either four or two, depending on the required load-bearing capacity. Four limiting strips 9 are welded around the four outer edges of the outer frame 1, which provides the best load-bearing capacity. Since the Y-shaped support partition 2 is designed, the two ends are already supported. When the load-bearing requirements are not particularly high, only two limiting strips 9 can be designed. The limiting strips 9 can be welded to the two sides of the support partition 2 that are not welded.

[0038] The nut of the locking bolt 7 is located outside the outer frame 1, and its bolt shank passes through the strip hole 6 and is horizontally positioned inside the outer frame 1. The locking nut 8 is located inside the outer frame 1 and is threadedly connected to the bolt shank. The locking nut 8 is positioned inside the outer frame 1 so that it is convenient to perform the locking operation after the connecting sleeve is leveled.

[0039] To avoid the installation position of the locking bolt 7 affecting the installation of the upper and lower exhaust pipes 10, the locking bolt 7 is located at the waist of the outer frame 1 and passes through the limiting strip 9.

[0040] As a preferred embodiment, both the outer frame 1 and the supporting partition 2 are made of stainless steel, which is simple to manufacture, not easy to rust, easy to clean, and can be recycled.

[0041] The above provides a detailed description of the connecting sleeve for a prefabricated multi-channel exhaust pipe provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, based on the idea of ​​this utility model, there will be changes in the specific implementation and application scope. Changes and improvements to this utility model are possible without exceeding the concept and scope specified in the appended claims. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A connecting pipe sleeve of an assembled multi-channel exhaust duct, comprising a square connecting pipe sleeve, characterized in that: The connecting pipe sleeve is composed of an outer frame and a support partition plate, the support partition plate has the same cross-sectional shape as the vertical partition plate in the exhaust pipe, is fixed horizontally in the outer frame, is clamped between the vertical partition plates of the upper and lower exhaust pipes, two fixed connecting pieces with positioning screws are welded on the left side of the outer frame, and two height-adjustable adjusting supports are arranged on the right side of the outer frame.

2. The connecting sleeve of the assembled multi-channel exhaust duct according to claim 1, characterized in that: The adjusting support is in the shape of inverted L, a strip-shaped hole is vertically arranged in the vertical part of the adjusting support, the adjusting support is fixed to the outer side of the outer frame through a locking bolt and a locking nut matched with the strip-shaped hole, and the horizontal part of the adjusting support is overlapped on the floor.

3. The connecting sleeve of the fabricated multi-pass exhaust ducting system according to claim 2, wherein: When the locking bolt slides in the middle part of the strip-shaped hole, the horizontal part of the adjusting support is at the same horizontal level as the positioning screw.

4. The connecting sleeve of the fabricated multi-pass exhaust ducting system according to claim 2, wherein: The nut of the locking bolt is located outside the outer frame, the bolt rod is arranged in the outer frame through the strip-shaped hole and the outer frame, the locking nut is located in the outer frame and is in threaded connection with the bolt rod.

5. The connecting sleeve of the fabricated multi-pass exhaust ducting system of claim 2, wherein: The outer diameter of the connecting pipe sleeve is larger than that of the exhaust pipe, the exhaust pipe is arranged on the connecting pipe sleeve, the support partition plate is in the shape of Y and has the same thickness as the outer frame, and the three end parts of the Y-shaped support partition plate are welded on the inner side of the outer frame.

6. The connecting sleeve of the fabricated multi-pass exhaust ducting system of claim 2, wherein: The inner diameter of the connecting pipe sleeve is the same as the outer diameter of the exhaust pipe, and the connecting pipe sleeve is sleeved between the exhaust pipes of the upper and lower floors, the support partition plate is in the shape of Y and has a smaller thickness than the outer frame, and the three end parts of the Y-shaped support partition plate are welded on the inner side of the outer frame.

7. The connecting sleeve of the fabricated multi-pass exhaust ducting system according to claim 6, wherein: The inner side of the outer frame is provided with a limiting strip, and the upper and lower end faces of the limiting strip are flush with the upper and lower surfaces of the support partition plate.

8. The connecting sleeve of the fabricated multi-pass exhaust ducting system according to claim 7, wherein: The locking bolt is located in the waist part of the outer frame and penetrates through the limiting strip.

9. The connecting sleeve of the fabricated multi-pass exhaust ducting system of claim 1, wherein: The outer frame is fixed to the wall surface through the positioning screw on the fixed connecting piece.

10. The connecting sleeve of the fabricated multi-pass exhaust ducting system of claim 1, wherein: The outer frame and the support partition plate are made of stainless steel.

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