Backflow prevention device for air conditioner pipeline

Abstract

An air conditioner pipeline anti-backflow device comprises a prefabricated building block and an embedded pipeline obliquely embedded in the prefabricated building block, and an air conditioner pipeline can penetrate through the embedded pipeline. The two ends of the pre-buried pipeline penetrate out of the two sides of the prefabricated building block correspondingly, the first end of the pre-buried pipeline is higher than the second end of the pre-buried pipeline, and an elastic tightening ring is arranged at the second end and used for tightening the outer wall of the air conditioner pipeline. An elastic rubber ring is further arranged in the embedded pipeline and used for sealing a gap between the outer wall of the air conditioner pipeline and the inner wall of the embedded pipeline. And by prefabricating the air conditioner pipeline anti-backflow device, time and labor are saved during wall construction, and later manual drilling is not needed. And the pre-buried pipeline is obliquely buried, so that condensate water of the air conditioner pipeline can be effectively prevented from flowing back into a room. And an elastic tightening ring is arranged, so that the embedded pipeline can be closed. And the elastic rubber ring is arranged in the pre-buried pipeline, so that sealing between the air conditioner pipeline and the pre-buried pipeline can be realized, and condensate water, external impurities and the like are effectively prevented from invading an indoor space.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning installation technology, and in particular to an anti-backflow device for air conditioning pipes. Background Technology

[0002] Wall-mounted air conditioners typically consist of an indoor unit and an outdoor unit. The indoor unit is usually placed indoors, while the outdoor unit is placed outdoors. The indoor and outdoor units are connected by a drain pipe and copper pipes of various sizes, so holes need to be left in the wall for the pipes to pass through. Traditionally, after the wall is built, a hole is drilled at the drain pipe location, with the hole roughly horizontal. However, in actual use, problems such as drain pipe blockage and condensation on the copper pipes frequently occur. Horizontal holes can easily cause condensate to flow back into the room, leaving water stains on the interior walls and affecting the interior wall decoration over time. Utility Model Content

[0003] The purpose of this utility model is to provide an anti-backflow device for air conditioning pipes, which facilitates construction and effectively solves the above-mentioned problems.

[0004] To achieve the above objectives, the solution of this utility model is:

[0005] An anti-backflow device for air conditioning ducts includes prefabricated blocks and a pre-embedded pipe that is inclined and embedded in the prefabricated blocks, the pre-embedded pipe being for air conditioning ducts to pass through;

[0006] The two ends of the pre-embedded pipe protrude from both sides of the precast block, and the first end of the pre-embedded pipe is higher than the second end, while the second end is provided with an elastic clamping ring, which is used to clamp the outer wall of the air conditioning pipe.

[0007] The pre-embedded pipe is also equipped with an elastic rubber ring, which is used to seal the gap between the outer wall of the air conditioning pipe and the inner wall of the pre-embedded pipe.

[0008] Furthermore, the pre-embedded pipe is also provided with a limiting ring and a clamping component. The limiting ring is fixed inside the pre-embedded pipe, the elastic rubber ring is located on the side of the limiting ring near the first end of the pre-embedded pipe, and the clamping component is located on the side of the elastic rubber ring away from the limiting ring. It is controlled to move axially inside the pre-embedded pipe to squeeze the elastic rubber ring, causing it to expand and seal the gap between the outer wall of the air conditioning pipe and the inner wall of the pre-embedded pipe.

[0009] Furthermore, the clamping component includes a washer and several pressure rods; the washer is axially movable on the side of the elastic rubber ring away from the limiting ring, and several circumferentially spaced nuts are provided on the inner wall of the pre-embedded pipe, with each pressure rod threadedly inserted into each nut, and the inner end of the pressure rod movably abutting against the washer.

[0010] Furthermore, it also includes an air conditioning hole sealing cover; the air conditioning hole sealing cover is a two-piece structure and can be detachably installed at the first end of the pre-buried pipe; the air conditioning hole sealing cover is provided with several through holes for each pressure rod to pass through; the pressure rod is a long bolt, which passes through the through hole of the air conditioning hole sealing pipe and then into the first end of the pre-buried pipe and the nut.

[0011] Furthermore, there are four nuts and four pressure rods, with each nut distributed at 90-degree intervals around its circumference.

[0012] Furthermore, the minimum vertical height at which the two ends of the pre-embedded pipe protrude from both sides of the precast block is equal to the thickness of the wall plaster.

[0013] Furthermore, the minimum vertical height of the pre-embedded pipe extending from both ends of the precast block is 2-3 cm.

[0014] Furthermore, the embedded pipe is a PVC embedded pipe.

[0015] By adopting the above technical solution, the prefabricated anti-backflow device for the air conditioning ducts allows for the installation of the embedded pipes along with the prefabricated blocks during wall construction, saving time and labor and eliminating the need for subsequent manual drilling. Furthermore, the inclined installation of the embedded pipes ensures that the first end, serving as an indoor opening, is higher than the second end, serving as an outdoor opening, effectively preventing condensate from flowing back into the room. An elastic clamping ring is also installed, with an opening slightly smaller than the diameter of the air conditioning duct. When the duct passes through this point, the opening expands, tightening the clamp and further sealing the embedded pipe, effectively extending its service life and reducing the amount of work required at heights during installation. Additionally, an elastic rubber ring inside the embedded pipe ensures a seal between the air conditioning duct and the embedded pipe, cutting off the connection between the indoor and outdoor spaces and effectively preventing condensate and external debris from entering the indoor space. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0017] Figure 2 This is a side view of an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the pre-embedded pipe and its internal structure according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram illustrating the usage state of an embodiment of the present utility model.

[0020] Labeling Explanation: 1. Precast block; 2. Embedded pipe; 21. First end; 22. Second end; 3. Air conditioning pipe; 4. Elastic clamping ring; 5. Elastic rubber ring; 6. Limiting ring; 7. Clamping component; 71. Washer; 72. Pressure rod; 8. Nut; 9. Air conditioning hole sealing cap; 91. Through hole; 10. Minimum vertical height. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] like Figures 1 to 4 As shown, an air conditioning duct anti-backflow device according to this embodiment includes a prefabricated block 1 and a pre-embedded pipe 2 embedded in the prefabricated block 1 at an incline, the pre-embedded pipe 2 being for the air conditioning duct 3 to pass through;

[0023] The two ends of the pre-embedded pipe 2 pass through the two sides of the precast block 1 respectively, and the first end 21 of the pre-embedded pipe 2 is higher than the second end 22, while the second end 22 is provided with an elastic clamping ring 4, which is used to clamp the outer wall of the air conditioning pipe 3.

[0024] The pre-embedded pipe 2 is also provided with an elastic rubber ring 5, which is used to seal the gap between the outer wall of the air conditioning pipe 3 and the inner wall of the pre-embedded pipe 2.

[0025] Therefore, by prefabricating an anti-backflow device for the air conditioning duct, the pre-embedded pipe 2 can be laid together with the prefabricated blocks 1 during wall construction, saving time and labor, and eliminating the need for manual drilling later. Furthermore, the pre-embedded pipe 2 is installed at an angle, so that the first end 21, which is the indoor opening, is higher than the second end 22, which is the outdoor opening, effectively preventing condensate from the air conditioning duct 3 from flowing back into the room. An elastic clamping ring 4 is also installed, with an opening slightly smaller than the diameter of the air conditioning duct 3. When the air conditioning duct 3 passes through this point, the opening of the elastic clamping ring 4 expands, tightening the air conditioning duct 3 and further sealing the pre-embedded pipe 2, effectively improving the service life of the air conditioning duct 3. At the same time, the installation process reduces the amount of work at height, eliminating the need to manually fill the gaps in the pre-embedded pipe 2 with foam or sound insulation cotton. Moreover, an elastic rubber ring 5 is installed inside the pre-embedded pipe 2, which can achieve a seal between the air conditioning duct 3 and the pre-embedded pipe 2, cutting off the connection between the indoor and outdoor spaces and effectively preventing condensate and external debris from entering the indoor space.

[0026] See Figure 3In this embodiment, the pre-embedded pipe 2 is further provided with a limiting ring 6 and a clamping member 7. The limiting ring 6 is fixed inside the pre-embedded pipe 2. The elastic rubber ring 5 is disposed on the side of the limiting ring 6 near the first end 21 of the pre-embedded pipe 2. The clamping member 7 is disposed on the side of the elastic rubber ring 5 away from the limiting ring 6 and is controlled to move axially within the pre-embedded pipe 2 to compress the elastic rubber ring 5, causing it to expand and seal the gap between the outer wall of the air conditioning pipe 3 and the inner wall of the pre-embedded pipe 2. The limiting ring 6 is fixed to the inner surface of the pre-embedded pipe 2, restricting the elastic rubber ring 5 from sliding along the pipe axial direction, while the clamping member 7 compresses and controls the expansion of the elastic rubber ring 5 to press against the air conditioning pipe 3, thereby ensuring that the elastic rubber ring 5 can reliably seal.

[0027] Specifically, the clamping component 7 may include a washer 71 and several pressure rods 72. The washer 71 is axially movable and disposed on the side of the elastic rubber ring 5 away from the limiting ring 6. Several circumferentially spaced nuts 8 are provided on the inner wall of the pre-embedded pipe 2. Each pressure rod 72 is threadedly inserted into each nut 8, and the inner end of the pressure rod 72 movably abuts against the washer 71. In this embodiment, there are four nuts 8 and four pressure rods 72, and the nuts 8 are distributed circumferentially at 90-degree intervals. Thus, by rotating the pressure rod 72, the pressure rod 72 can move axially to compress the washer 71, thereby compressing the elastic rubber ring 5.

[0028] See Figure 2 In this embodiment, an air conditioning hole sealing cover 9 is also included; the air conditioning hole sealing cover 9 is a two-piece structure and is detachably installed on the first end 21 of the pre-buried pipe 2; the air conditioning hole sealing cover 9 can refer to the structure of the prior art.

[0029] The air conditioning hole sealing cover 9 is provided with several through holes 91 for each pressure rod 72 to pass through; the pressure rod 72 can be a long bolt, which passes through the through hole 91 of the air conditioning hole sealing pipe and then into the first end 21 of the pre-embedded pipe 2 and the nut 8. The pre-embedded pipe 2 can be a PVC pre-embedded pipe 2.

[0030] See Figure 4 The minimum vertical height 10 from both ends of the pre-embedded pipe 2 through the precast blocks 1 can be the thickness of the wall plaster. For example, it can be 2-3 cm. This can provide a standard for plaster thickness and improve the quality of the wall plaster layer.

[0031] In summary, the following installation method can be used in this embodiment:

[0032] 1. The precast blocks 1 with the embedded pipe 2 already in place are laid together with the wall and formed. During the wall plastering stage, the plastering height is controlled to be the vertical height of the embedded pipe 2 extending out of the block.

[0033] 2. When installing the air conditioner, the air conditioner pipe 3 is passed from the first indoor end 21 through the gasket 71, elastic rubber ring 5, and limit ring 6 in the pre-embedded pipe 2, and finally through the elastic clamping ring 4 to connect with the outdoor unit. The elastic clamping ring 4 expands and binds the air conditioner pipe 3.

[0034] 3. Then, insert the separate air conditioning hole sealing cap 9 into the pre-embedded pipe 2, pass four long bolts through the through hole 91 on the air conditioning hole sealing cap 9, insert them into the nut 8, and continuously tighten the long bolts until the bottom of the long bolts abuts against the washer 71, compressing the elastic rubber ring 5, so that it expands in the cross section of the pipe until it abuts against the air conditioning pipe 3, thereby sealing the gap between the air conditioning pipe 3 and the prefabricated pipe.

[0035] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, equivalent changes and modifications without departing from the principle of this utility model should still fall within the protection scope of this utility model.

[0036] In the description of the embodiments of this application, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships commonly used when the product is in use, or the orientations or positional relationships commonly understood by those skilled in the art. These are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, "a plurality of" and "several" mean two or more, unless otherwise explicitly specified.

Claims

1. A backflow prevention device for air conditioning ducts, characterized in that: This includes precast blocks and pre-embedded pipes that are inclined and embedded in the precast blocks, with the pre-embedded pipes allowing air conditioning ducts to pass through; The two ends of the pre-embedded pipe protrude from both sides of the precast block, and the first end of the pre-embedded pipe is higher than the second end, while the second end is provided with an elastic clamping ring, which is used to clamp the outer wall of the air conditioning pipe. The pre-embedded pipe is also equipped with an elastic rubber ring, which is used to seal the gap between the outer wall of the air conditioning pipe and the inner wall of the pre-embedded pipe.

2. The anti-backflow device for air conditioning ducts according to claim 1, characterized in that: The pre-embedded pipe is also equipped with a limiting ring and a clamping component. The limiting ring is fixed inside the pre-embedded pipe. The elastic rubber ring is set on the side of the limiting ring near the first end of the pre-embedded pipe. The clamping component is set on the side of the elastic rubber ring away from the limiting ring and is controlled to move axially inside the pre-embedded pipe to squeeze the elastic rubber ring, causing it to expand and seal the gap between the outer wall of the air conditioning pipe and the inner wall of the pre-embedded pipe.

3. The anti-backflow device for air conditioning ducts according to claim 2, characterized in that: The clamping component includes a washer and several pressure rods; the washer is axially movable on the side of the elastic rubber ring away from the limiting ring, and several circumferentially spaced nuts are provided on the inner wall of the pre-embedded pipe, with each pressure rod threadedly inserted into each nut, and the inner end of the pressure rod movably abutting against the washer.

4. The anti-backflow device for air conditioning ducts according to claim 3, characterized in that: It also includes an air conditioning hole sealing cover; the air conditioning hole sealing cover is a two-piece structure and can be detachably installed at the first end of the pre-buried pipe; the air conditioning hole sealing cover is provided with several through holes for each pressure rod to pass through; the pressure rod is a long bolt, which passes through the through hole of the air conditioning hole sealing pipe and then into the first end of the pre-buried pipe and the nut.

5. The anti-backflow device for air conditioning ducts according to claim 3, characterized in that: There are four nuts and four pressure rods, with each nut distributed at 90-degree intervals around its circumference.

6. The anti-backflow device for air conditioning ducts according to claim 1, characterized in that: The minimum vertical height at which the two ends of the pre-embedded pipe protrude from both sides of the precast block is equal to the thickness of the wall plaster.

7. The anti-backflow device for air conditioning ducts according to claim 6, characterized in that: The minimum vertical height of the pre-embedded pipe extending from both ends of the precast block is 2-3 cm.

8. The anti-backflow device for air conditioning ducts according to claim 1, characterized in that: The embedded pipe is a PVC embedded pipe.

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