Heating and ventilation pipe connecting device

Abstract

The utility model discloses a heating and ventilation pipe connecting device, and relates to the technical field of heating and ventilation engineering, the heating and ventilation pipe connecting device comprises a pair of connecting flanges which are assembled in a sealed combination mode, the connecting flanges are used for being connected with heating and ventilation pipes in a sealed mode, strip-shaped grooves are formed in the connecting flanges in the axial direction, and threaded rotating columns are arranged on the outer walls of the inner ends of the heating and ventilation pipes; the connecting flange is provided with a strip-shaped groove, the threaded rotary column extends out of the strip-shaped groove, a locking nut is arranged on the threaded rotary column, the heating and ventilation pipe can move in the axial direction of the connecting flange, and the heating and ventilation pipe and the connecting flange are fixed through the locking nut. The connecting flanges and the heating and ventilation pipes are assembled in a sliding connection mode, so that the connecting flanges can be adaptively adjusted to keep connection with the heating and ventilation pipes according to the distance between the heating and ventilation pipes, and after connection, the heating and ventilation pipes and the connecting flanges are pressed tightly through cooperation of threaded rotary columns and locking nuts; therefore, installation and connection of the heating and ventilation pipe are facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of HVAC engineering, and in particular to a HVAC pipe connection device. Background Art

[0002] HVAC engineering is an important part of construction engineering, mainly including heating engineering, ventilation engineering, air conditioning engineering and water supply and drainage engineering. The installation of HVAC pipes is an important link in the construction of HVAC engineering. The connection and installation methods of HVAC pipes include threaded connection, flange connection, welding, groove connection, ferrule connection, compression connection and hot melt connection.

[0003] After the HVAC pipes are installed and fixed separately, the existing connection devices cannot be adjusted and applied according to the distance between the HVAC pipes, and it is not convenient to add docking adjustment measures on the HVAC pipes to adjust the distance between the HVAC pipes. Utility Model Content

[0004] The main purpose of this application is to provide a HVAC pipe connection device to solve the above-mentioned technical problems.

[0005] The technical solutions adopted in this application are as follows:

[0006] A HVAC pipe connection device includes a pair of connection flanges assembled in a sealing combination, the connection flanges are used to seal and connect the HVAC pipes, the connection flanges are axially provided with strip grooves, the inner end outer wall of the HVAC pipe is provided with a threaded cylinder, the threaded cylinder extends from the strip groove, a locking nut is provided on the threaded cylinder, the HVAC pipe can move along the axial direction of the connection flange, and the HVAC pipe is fixed to the connection flange by the locking nut.

[0007] Optionally, the connecting flange includes a flange plate and a connecting sleeve portion, the connecting sleeve portion is provided with a slot, and the HVAC pipe is inserted into the slot.

[0008] Optionally, an annular groove is provided on the inner side surface of the inner end of the HVAC pipe, and a rubber sealing cylinder is provided in the annular groove and is in compression contact with the HVAC pipe and the connecting sleeve portion.

[0009] Optionally, a surface of the rubber sealing tube in contact with the connecting sleeve portion is a frosted surface.

[0010] Optionally, the width of the slot is the same as the wall thickness of the HVAC pipe.

[0011] Optionally, a sealing groove is provided on an end surface of the flange away from the connecting sleeve portion, and a sealing ring is provided in the sealing groove.

[0012] Optionally, a threaded blind hole is provided on the outer wall of the inner end of the HVAC pipe, and the threaded rotating column is threadedly connected in the threaded blind hole.

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

[0014] A HVAC pipe connection device proposed in an embodiment of the present application, is used to connect the HVAC pipe by providing a connecting flange. After the connection, the HVAC pipe can move along the axial direction of the connecting flange, so that it can be adjusted according to the spacing between the HVAC pipes, and the threaded column and the strip groove can be used for installation guidance during the adjustment and installation process. After the installation is completed, the position of the HVAC pipe can be locked by the locking nut, which greatly facilitates the installation and connection of the HVAC pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of the HVAC pipe connection device provided in an embodiment of the present application at one viewing angle;

[0016] Figure 2 A cross-sectional view of a HVAC pipe connection device provided in an embodiment of the present application at a certain viewing angle.

[0017] Description of the reference numerals in the accompanying drawings:

[0018] 100-connecting flange, 101-flange plate, 102-connecting sleeve part, 103-slot, 104-bar hole, 105-sealing ring, 106-threaded rotating column, 107-locking nut, 200-HVAC pipe, 201-rubber sealing cylinder. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0023] See attached Figure 1 to Figure 2 As shown, an embodiment of the present application provides a HVAC pipe 200 connection device, including a pair of connecting flanges 100 assembled by bolts, the connecting flanges 100 are used to connect and install the HVAC pipe 200, and the HVAC pipe 200 and the connecting flanges 100 are movably assembled so that the HVAC pipe 200 can move along the axial direction of the connecting flanges 100, so that the connecting flanges 100 can be used to adjust and adapt according to the spacing between the HVAC pipes 200.

[0024] Specifically:

[0025] like Figure 1 and Figure 2 As shown, the connecting flange 100 includes a flange plate 101 and a connecting sleeve portion 102. The flange plate 101 and the connecting sleeve portion 102 are an integrated structure. A plurality of bolt holes are evenly distributed axially on the flange plate 101, which are used to fix and assemble the connecting flanges 100 on both sides through bolts in the bolt holes. Of course, in order to ensure the sealing between the connecting flanges 100, as shown in FIG. Figure 2 As shown, a sealing groove is provided on the end surface of the flange 101 away from the connecting sleeve portion 102, and the sealing groove is used to install a sealing ring 105. After the flanges 101 on both sides are fitted together, the sealing ring 105 is used to ensure the sealing of the flange connection surface.

[0026] In the above, the connecting sleeve part 102 is cylindrical, and a slot 103 is provided on the connecting sleeve part 102 from the sleeve end to the side of the flange 101, and the HVAC pipe 200 is inserted into the slot 103, wherein the slot width of the slot 103 is the same as the pipe wall thickness of the HVAC pipe 200, and the HVAC pipe 200 fits with the connecting sleeve after being inserted into the slot 103. One end of the HVAC pipe 200 inserted into the slot 103 is positioned as the inner end, wherein, in order to ensure the sealing between the HVAC pipe 200 and the connecting sleeve part 102, as shown in FIG. Figure 2 As shown, an annular groove is provided on the inner side surface of the inner end of the HVAC pipe 200, and a rubber sealing cylinder 201 is installed in the annular groove. After the HVAC pipe 200 is inserted into the slot 103, the rubber sealing cylinder 201 maintains extrusion contact with the HVAC pipe 200 and the connecting sleeve 102, ensuring that the rubber sealing cylinder 201 is tightly fitted to the HVAC pipe 200 and the connecting sleeve to ensure the sealing between the HVAC pipe 200 and the connecting sleeve. The side of the rubber sealing cylinder 201 that contacts the connecting sleeve 102 is a frosted surface to increase friction during contact and reduce the rotation of the rubber sealing cylinder 201.

[0027] At the same time, in order to guide the movement of the HVAC pipe 200 and fix the relative position between the HVAC pipe 200 and the connecting flange 100, as shown in FIG. Figure 1 and Figure 2 As shown, a plurality of strip holes 104 are circumferentially arranged on the outer wall of the connecting sleeve portion 102, the strip holes 104 are connected to the slots 103, and the inner end outer wall of the HVAC pipe 200 is provided with threaded blind holes corresponding to the strip holes 104 one by one, and threaded columns 106 are installed in the threaded blind holes. The threaded columns 106 extend from the strip holes 104 to the outside of the connecting sleeve portion 102, and a locking nut 107 is arranged on the threaded column 106.

[0028] It can be imagined that when using the connecting flange 100 to connect the HVAC pipe 200, first install the rubber sealing tube 201 into the annular groove, then align the slot 103 of the connecting flange 100 with the HVAC pipe 200 and insert it, rotate the connecting flange 100 to make the threaded blind hole correspond to the strip hole 104, then screw the threaded column 106 into the threaded blind hole, then turn the sealing ring 105 into one side of the sealing groove, and adjust the positions of the connecting flanges 100 on both sides until the end faces of the two are in contact, finally assemble and fix the connecting flange 100 with bolts, and tighten the locking nut 107 to fix the relative position of the HVAC pipe 200 and the connecting flange 100, thereby completing the installation of the HVAC pipe 200.

[0029] To sum up, an embodiment of the present application provides a HVAC pipe connecting device, which assembles the connecting flange and the HVAC pipe in a sliding connection manner, so that the connecting flange can be adaptively adjusted according to the spacing between the HVAC pipes to keep it connected to the HVAC pipe. After the connection, the HVAC pipe and the connecting flange are tightened by cooperating with the threaded rotating column and the locking nut, thereby facilitating the installation and connection of the HVAC pipe.

[0030] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A HVAC pipe connection device, characterized in that: It includes a pair of connecting flanges assembled in a sealing combination, the connecting flanges are used to seal and connect a HVAC pipe, the connecting flanges are axially provided with a strip groove, the inner end outer wall of the HVAC pipe is provided with a threaded column, the threaded column extends from the strip groove, a locking nut is provided on the threaded column, the HVAC pipe can move along the axial direction of the connecting flange, and the HVAC pipe is fixed to the connecting flange by the locking nut.

2. The HVAC pipe connection device according to claim 1, characterized in that: The connecting flange comprises a flange plate and a connecting sleeve portion, the connecting sleeve portion is provided with a slot, and the HVAC pipe is inserted into the slot.

3. The HVAC pipe connection device according to claim 2, characterized in that: An annular groove is arranged on the inner side surface of the inner end of the HVAC pipe, and a rubber sealing cylinder is arranged in the annular groove and is in compression contact with the HVAC pipe and the connecting sleeve portion.

4. The HVAC pipe connection device according to claim 3, characterized in that: The surface of the rubber sealing tube in contact with the connecting sleeve portion is a frosted surface.

5. The HVAC pipe connection device according to claim 2, characterized in that: The width of the slot is the same as the wall thickness of the HVAC pipe.

6. The HVAC pipe connection device according to claim 2, characterized in that: A sealing groove is arranged on an end surface of the flange away from the connecting sleeve portion, and a sealing ring is arranged in the sealing groove.

7. The HVAC pipe connection device according to claim 1, characterized in that: The outer wall of the inner end of the HVAC pipe is provided with a threaded blind hole, and the threaded rotating column is threadedly connected in the threaded blind hole.

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