Heating and ventilation pipe with tight joint for heating and ventilation engineering

Abstract

The utility model relates to the field of heating and ventilation pipes, and discloses a heating and ventilation pipe with a tight joint for heating and ventilation engineering, which comprises a heating and ventilation pipe body, an inner frame is fixedly connected to the middle of the outer wall of the heating and ventilation pipe body, an outer frame is rotatably connected to the outer wall of the inner frame, and a filter frame is clamped to the inner wall of the top of the outer frame through a limiting assembly. A filter element is inserted into the inner wall of the side face of the filter frame, the limiting assembly comprises a limiting plate, and the bottom end of the limiting plate is elastically connected to the inner wall of the outer frame through a limiting spring. According to the heating and ventilation pipe, the inner frame, the outer frame, the heating and ventilation pipe body, the filter frame, the filter element and the limiting assembly are arranged, when the filter element is replaced, a limiting handle is manually pulled outwards to drive a limiting plate to be separated from a limiting groove to relieve limiting, then the filter frame is taken out for replacement, and when replacement is conducted, the outer frame can be rotated to close an opening in the top of the inner frame, and fluid media are prevented from leaking; and the two groups of filter elements are sequentially replaced, so that the non-stop replacement effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of HVAC pipes, and in particular to an HVAC pipe with a tight-fitting interface for HVAC engineering. Background Technology

[0002] HVAC pipes, used in HVAC engineering, are key components responsible for transporting fluid media. They play a vital role in heating, ventilation, and air conditioning systems. As crucial components for transporting various media, the performance of HVAC pipes directly affects the operational efficiency and stability of the entire system. With the booming development of the construction industry and the increasing demands for indoor environmental comfort, the scale and complexity of HVAC projects are growing, posing more stringent challenges to the technical specifications of HVAC pipes.

[0003] In terms of connection, existing HVAC pipes used in HVAC engineering employ traditional connection methods such as heat fusion, welding, and flange connections. Some HVAC pipes are also equipped with a single filtration method, using a simple filter screen for filtration.

[0004] Existing HVAC pipes have low integration between their filtration structure and piping. Replacing the filter element requires interrupting the entire system, affecting project progress. Some filtration devices are fixedly installed, making it difficult to disassemble and clean the filter element after it becomes clogged, resulting in reduced filtration efficiency and even pipe blockage, increasing maintenance costs. In addition, during filter element replacement, pipe openings can easily lead to media leakage. Therefore, a new type of HVAC pipe with a tight-fitting interface is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a heating and ventilation pipe for heating and ventilation engineering with a tight-fitting interface, which aims to improve the problem that the entire system needs to be interrupted when the filter element needs to be replaced in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a heating and ventilation pipe for heating and ventilation engineering with a tight-fitting interface, comprising a heating and ventilation pipe body, an inner frame fixedly connected to the middle of the outer wall of the heating and ventilation pipe body, an outer frame rotatably connected to the outer wall of the inner frame, a filter frame snapped into the top inner wall of the outer frame by a limiting component, and a filter element inserted into the inner side wall of the filter frame:

[0007] The limiting component includes a limiting plate, the bottom end of which is elastically connected to the inner wall of the outer frame via a limiting spring, a limiting handle is fixedly connected to the outer wall end of the limiting plate, and a limiting groove is formed at the top of the side wall of the filter frame.

[0008] As a further description of the above technical solution:

[0009] An extension wall is fixedly connected to the right end of the HVAC pipe body, a double-layer sleeve is fixedly connected to the left end of the HVAC pipe body, and docking frames are fixedly connected to both the left and right ends of the HVAC pipe body. The outer wall of the docking frame is provided with an installation hole.

[0010] As a further description of the above technical solution:

[0011] The filter frame is inserted into the top inner wall of the inner frame, and the filter frame is inserted into the top inner wall of the HVAC pipe body.

[0012] As a further description of the above technical solution:

[0013] One end of the limiting spring is fixedly connected to the inner wall of the outer frame, and the other end of the limiting spring is fixedly connected to the bottom of the limiting plate.

[0014] As a further description of the above technical solution:

[0015] The limiting plate is slidably connected to the inner wall of the outer frame, and the limiting handle is slidably connected to the inner wall of the outer frame.

[0016] As a further description of the above technical solution:

[0017] The limiting plate is snapped onto the inner wall of the limiting groove.

[0018] As a further description of the above technical solution:

[0019] The extension wall is inserted into the inner wall of the double-layer sleeve.

[0020] As a further description of the above technical solution:

[0021] The two sets of docking frames are fixedly connected by bolts.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by setting an inner frame, an outer frame, a heating and ventilation pipe body, a filter frame, a filter element, and a limiting component, when replacing the filter element, the limiting handle is manually pulled outward to drive the limiting plate out of the limiting groove to release the limiting, and then the filter frame is taken out for replacement. When replacing, the outer frame can be rotated to close the opening at the top of the inner frame to prevent fluid medium from leaking out. Two sets of filter elements are replaced in sequence to achieve the effect of replacing without stopping the machine.

[0024] 2. In this utility model, by setting an extension wall, a double-layer sleeve, a docking frame, and mounting holes, when docking the HVAC pipe body, the nested snap-fit ​​structure of the extension wall and the double-layer sleeve, combined with the rubber ring seal, significantly improves the interface sealing performance compared to traditional flange or socket connections, effectively preventing leakage of media such as water, steam, and air. At the same time, the design of the docking frame and mounting holes allows multiple sets of HVAC pipe bodies to be quickly fixed with bolts, reducing the time spent on alignment and tightening during installation. Attached Figure Description

[0025] Figure 1 A three-dimensional schematic diagram of the heating pipe body with a tight-fitting interface for heating and ventilation engineering proposed in this utility model.

[0026] Figure 2 This is a three-dimensional schematic diagram of the outer frame of a heating and ventilation pipe with a tight-fitting interface proposed in this utility model.

[0027] Figure 3 This utility model presents a three-dimensional schematic diagram of the extension wall, double-layer sleeve, and docking frame of a heating and ventilation pipe for heating and ventilation engineering with a tight-fitting interface.

[0028] Figure 4 A three-dimensional cross-sectional view of the outer frame of a heating and ventilation pipe with a tight-fitting interface proposed in this utility model.

[0029] Figure 5 This is a three-dimensional schematic diagram of a filter frame for a heating and ventilation pipe with a tight-fitting interface proposed in this utility model.

[0030] Figure 6 This utility model proposes a heating and ventilation pipe with a tight-fitting interface for heating and ventilation engineering. Figure 4 Enlarged 3D schematic diagram of part A.

[0031] Legend:

[0032] 1. HVAC pipe body; 2. Inner frame; 21. Outer frame; 22. Filter frame; 23. Filter element; 3. Limiting assembly; 31. Limiting plate; 32. Limiting spring; 33. Limiting handle; 34. Limiting groove; 4. Extension wall; 41. Double sleeve; 42. Connecting frame; 43. Mounting hole. Detailed Implementation

[0033] 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.

[0034] Reference Figures 1-3 This utility model provides an embodiment of a heating and ventilation (HVAC) pipe for HVAC engineering with a tight-fitting interface, comprising a pipe body 1. The pipe body 1 is an existing HVAC pipe used for transporting media such as water, steam, or air. An inner frame 2 is fixedly connected to the middle of the outer wall of the pipe body 1. The inner frame 2 is used to increase the diameter of the pipe body 1, thereby increasing the snap-fit ​​area of ​​the filter frame 22 and providing it with stable lateral support. An outer frame 21 is rotatably connected to the outer wall of the inner frame 2. The outer frame 21 is used to prevent the flow of water when the top openings of the inner frame 2 and the outer frame 21 are constantly open during the replacement of the filter frame 22 and the filter element 23. If the fluid medium leaks out, the opening at the top of the inner frame 2 can be closed by rotating the outer frame 21 to prevent leakage. The inner wall at the top of the outer frame 21 is secured with a filter frame 22 by a limiting component 3. The filter frame 22 is used to load the filter element 23 and has through holes on its surface to allow the fluid medium to pass through the filter frame 22 and enter the filter element 23 for filtration. The filter element 23 is inserted into the inner wall of the side of the filter frame 22. The filter element 23 is existing technology and will not be described in detail. The corresponding filter material can be set according to the fluid medium. The filter frame 22 is inserted into the inner wall at the top of the inner frame 2 and into the inner wall at the top of the HVAC pipe body 1.

[0035] Reference Figures 1-3 An extension wall 4 is fixedly connected to the right end of the HVAC pipe body 1. The extension wall 4 has inner and outer double layers and is used to snap onto the double-layer sleeve 41 at the left end of another set of HVAC pipe bodies 1, thereby making a tight connection between the two sets of HVAC pipe bodies 1. A rubber ring is required at the connection part to prevent fluid leakage. The double-layer sleeve 41 is fixedly connected to the left end of the HVAC pipe body 1. The double-layer sleeve 41 and the extension wall 4 snap onto each other so that the docking frames 42 at the ends of the two sets of HVAC pipe bodies 1 come into contact. Both the left and right ends of the HVAC pipe body 1 are fixedly connected to docking frames 42. The docking frames 42 are used to dock several sets of HVAC pipe bodies 1. The tightness of the connection between the two sets of HVAC pipe bodies 1 can be judged by observing the distance between the two sets of docking frames 42. The outer wall of the docking frame 42 has a mounting hole 43 for inserting bolts and nuts. The two sets of docking frames 42 are tightly connected and fixed by multiple sets of bolts and nuts. The extension wall 4 is inserted into the inner wall of the double-layer sleeve 41. The two sets of docking frames 42 are fixedly connected by bolts.

[0036] Reference Figures 4-6The limiting component 3 includes a limiting plate 31, which is used to engage with the limiting groove 34 to restrict the vertical movement of the filter frame 22. The bottom end of the limiting plate 31 is elastically connected to the inner wall of the outer frame 21 via a limiting spring 32. A limiting handle 33 is fixedly connected to the outer end of the limiting plate 31. The limiting handle 33 is used to extend the limiting plate 31 to the outside of the outer frame 21 for easy manual release of the limiting position. A limiting groove 34 is provided at the top of the side wall of the filter frame 22. The limiting groove 34 is used to engage with the limiting plate 31 to fix the filter frame 22 to the HVAC system. The inner wall of the tube body 1 has a limiting spring 32, one end of which is fixedly connected to the inner wall of the outer frame 21, and the other end of which is fixedly connected to the bottom of the limiting plate 31. Through the opposing pressing force between the limiting spring 32 and the inner wall of the outer frame 21, the limiting plate 31 is always locked onto the inner wall of the limiting groove 34 without being affected by external force. The limiting plate 31 is slidably connected to the inner wall of the outer frame 21, and the limiting handle 33 is slidably connected to the inner wall of the outer frame 21. The limiting plate 31 is locked onto the inner wall of the limiting groove 34.

[0037] Working principle: When it is necessary to connect two sets of HVAC pipe bodies 1, the extension wall 4 of one set of HVAC pipe bodies 1 is inserted into the double-layer sleeve 41 of the other set of HVAC pipe bodies 1. Since both the extension wall 4 and the double-layer sleeve 41 are double-layer structures, after they are tightly engaged, the docking frames 42 at the ends of the two sets of HVAC pipe bodies 1 come into contact with each other. At this time, by inserting bolts into the mounting holes 43 and tightening the nuts, the two sets of docking frames 42 are firmly fixed, realizing the connection of the pipes. At the same time, a rubber ring is set at the connection part between the extension wall 4 and the double-layer sleeve 41. The elastic deformation of the rubber ring fills the gap, effectively preventing the leakage of fluid media such as water, steam or air, and ensuring the system's airtightness.

[0038] When the fluid medium flows in the HVAC pipe body 1, it will pass through the filter frame 22 and filter element 23 installed at the top. The filter frame 22 has through holes on its surface. The medium passes through the through holes and enters the filter element 23. The filter element 23 uses the corresponding filter material according to the type of medium to filter the medium and remove impurities, particles and other contaminants, ensuring that the cleanliness of the medium delivered to the system meets the requirements.

[0039] When filter element 23 needs to be replaced, pull the limiting handle 33 outward to move the limiting plate 31 upward against the elastic force of the limiting spring 32, so that the limiting plate 31 disengages from the limiting groove 34 at the top of the side wall of the filter frame 22, releasing the limiting of the filter frame 22. At this time, the filter frame 22 and filter element 23 can be taken out for replacement. During the replacement process, rotate the outer frame 21 to close the opening at the top of the inner frame 2, preventing fluid medium leakage due to the open opening at the top of the inner frame 2 and the outer frame 21. After the replacement is completed, reinsert the filter frame 22 into the inner frame 2 and the top inner wall of the HVAC pipe body 1, release the limiting handle 33, and under the opposing squeezing force of the limiting spring 32, the limiting plate 31 is re-clamped into the limiting groove 34 to fix the filter frame 22. Replace the two sets of filter elements 23 in sequence to achieve the effect of replacement without stopping the machine.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heating and ventilation pipe having a tight joint interface, comprising a heating and ventilation pipe body (1), characterized in that: The middle part of the outer wall of the heating and ventilation pipe body (1) is fixedly connected with an inner frame (2), the outer wall of the inner frame (2) is rotatably connected with an outer frame (21), the inner wall of the top of the outer frame (21) is clamped with a filter frame (22) through a limiting assembly (3), and the inner wall of the side of the filter frame (22) is inserted with a filter core (23). The limiting assembly (3) comprises a limiting plate (31), the bottom end of the limiting plate (31) is elastically connected to the inner wall of the outer frame (21) through a limiting spring (32), the outer wall end of the limiting plate (31) is fixedly connected with a limiting handle (33), and the top end of the side wall of the filter frame (22) is provided with a limiting groove (34).

2. The heating and ventilation pipe with a tight interface according to claim 1, characterized in that: The right end of the heating and ventilation pipe body (1) is fixedly connected with an extension wall (4), the left end of the heating and ventilation pipe body (1) is fixedly connected with a double-layer sleeve (41), and the left and right ends of the heating and ventilation pipe body (1) are fixedly connected with a butt joint frame (42).

3. The heating and ventilation pipe with a tight interface according to claim 1, characterized in that: The filter frame (22) is inserted on the top inner wall of the inner frame (2), and the filter frame (22) is inserted on the top inner wall of the heating and ventilation pipe body (1).

4. The heating and ventilation pipe with a tight interface according to claim 1, characterized in that: One end of the limiting spring (32) is fixedly connected to the inner wall of the outer frame (21), and the other end of the limiting spring (32) is fixedly connected to the bottom of the limiting plate (31).

5. The heating and ventilation pipe with a tight interface according to claim 1, characterized in that: The limiting plate (31) is slidably connected to the inner wall of the outer frame (21), and the limiting handle (33) is slidably connected to the inner wall of the outer frame (21).

6. The heating and ventilation pipe with a tight interface according to claim 1, characterized in that: The limiting plate (31) is clamped on the inner wall of the limiting groove (34).

7. The heating and ventilation pipe with a tight interface according to claim 2, characterized in that: The extension wall (4) is inserted on the inner wall of the double-layer sleeve (41).

8. The heating and ventilation pipe with a tight interface according to claim 2, characterized in that: Two groups of butt joint frames (42) are fixedly connected by bolts.

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