Connecting device for heating and ventilation pipe in heating and ventilation project

Abstract

The utility model relates to the technical field of heating and ventilation engineering, and discloses a connecting device for a heating and ventilation pipe in the heating and ventilation engineering, which comprises a connecting pipe, second connecting flanges are arranged at two ends of the connecting pipe, sealing rings are arranged at joints of the connecting pipe and the second connecting flanges, and through holes are equidistantly formed in the surfaces of the second connecting flanges. Fixing bolts are installed in through holes in the surfaces of the second connecting flanges, the ends, away from the connecting pipe, of the side faces of the second connecting flanges are fixedly connected with installing cylinders, and the outer sides of the ends, away from the connecting pipe, of the second connecting flanges are connected with heating and ventilation pipe bodies in a sleeved mode. And a sealing ring is arranged at the joint of the connecting pipe and the second connecting flange and located on the inner walls of the first mounting groove and the second mounting groove, a heater is isolated from the sealing ring through a sleeve, the heater can be prevented from making direct contact with the sealing ring, and therefore the service life of the sealing ring is prolonged, and the sealing performance of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of HVAC engineering, and more specifically to a connecting device for HVAC pipes in HVAC engineering. Background Art

[0002] The full name of HVAC major in subject classification is heating, gas supply, ventilation and air conditioning engineering. In construction engineering, it generally includes heating, smoke control and exhaust, ventilation and air conditioning engineering, etc. HVAC system is an important part of the building, which can be specifically divided into heating, ventilation, smoke control, smoke exhaust, air conditioning, refrigeration engineering, etc. In the engineering, HVAC pipeline is the bearing structure for transporting heat medium and cold medium.

[0003] The shortcomings of the existing technology: At present, the connection structure of the existing HVAC pipes mostly adopts flange connection. In order to ensure the sealing of the HVAC pipes, a sealing rubber ring is installed between the two connected flanges. The sealing rubber ring is squeezed for a long time. At the same time, the heat medium flows through the sealing rubber ring for a long time, which will accelerate the aging and hardening of the sealing rubber ring, thereby reducing the sealing of the HVAC pipe connection and causing waste of heat medium. For this reason, we propose a connection device for HVAC pipes in HVAC projects to solve the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a connection device for HVAC pipes in HVAC engineering to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a connecting device for HVAC pipes in HVAC engineering, comprising a connecting pipe, both ends of the connecting pipe are provided with a second connecting flange, the connection between the connecting pipe and the second connecting flange is provided with a sealing ring, the surface of the second connecting flange is provided with through holes at equal distances, the through holes on the surface of the second connecting flange are installed with fixing bolts, the side of the second connecting flange away from the connecting pipe is fixedly connected with a mounting cylinder, the outer side of the second connecting flange away from the connecting pipe is sleeved with a HVAC pipe body, the inner wall of the mounting cylinder is provided with a plurality of mounting cavities at equal distances, the mounting cavities of the inner wall of the mounting cylinder are provided with limit blocks, the surface of the limit blocks is movably connected with limit bolts, the surface of the mounting cylinder is provided with threaded grooves at equal distances, the side surfaces of the limit bolts are threadedly connected with the threaded grooves on the side surfaces of the mounting cylinder, and the side of the limit block away from the limit bolt is adapted to the side surface of the HVAC pipe body;

[0006] Preferably, an anti-slip groove is fixedly connected to the side of the connecting pipe, both ends of the connecting pipe are fixedly connected to a first connecting flange, the surface of the first connecting flange is equidistantly provided with through holes, and the inner wall of the first connecting flange is provided with a first mounting groove.

[0007] Preferably, the end of the second connecting flange close to the connecting pipe is fixedly connected with a sleeve, the side of the second connecting flange is fixedly connected with a slot, the side of the slot is adapted to the inner wall of the HVAC pipe body, and the end of the second connecting flange close to the sleeve is provided with a second mounting groove.

[0008] Preferably, the outer diameter of the sleeve is matched with the inner diameter of the connecting pipe.

[0009] Preferably, the side surfaces of the sealing ring are matched with the inner wall of the first installation groove and the inner wall of the second installation groove.

[0010] Preferably, one end of the fixing bolt away from the second connecting flange passes through a through hole on the surface of the first connecting flange and is threadedly connected to a nut, and the first connecting flange is fixedly connected to the second connecting flange by the fixing bolt.

[0011] Technical effects and advantages of the utility model:

[0012] 1. The utility model is provided with a sleeve. When the device is used, a sealing ring is provided at the connection between the connecting pipe and the second connecting flange, and the sealing ring is located on the inner walls of the first mounting groove and the second mounting groove. The sleeve can isolate the heating air from the sealing ring, which can prevent the heating air from directly contacting the sealing ring, thereby increasing the service life of the sealing ring and further improving the sealing performance of the device.

[0013] 2. The utility model is provided with a limit block. When the device is used, the HVAC pipe body is sleeved on the outer side of the groove on the side of the second connecting flange, and then the limit bolt is rotated. When the limit bolt rotates, it will push the limit block through the threaded hole on the side of the mounting tube, so that the limit block generates a certain extrusion force on the side of the HVAC pipe body. The HVAC pipe body is fixed to the outer side of the second connecting flange through the mutual extrusion of the groove and the limit block, thereby preventing the HVAC pipe body and the second connecting flange from falling off during long-term use of the device, thereby improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic cross-sectional view of a local structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the second connecting flange structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the connecting pipe structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the second connecting flange structure of the utility model;

[0019] Figure 6 For the utility model Figure 3 A magnified view of the structure in the middle.

[0020] The figures are marked as follows: 1. connecting pipe; 101. anti-slip groove; 102. first connecting flange; 1021. first mounting groove; 2. second connecting flange; 201. sleeve; 202. slot; 203. second mounting groove; 3. sealing ring; 4. fixing bolt; 5. mounting tube; 501. limit block; 502. limit bolt; 6. HVAC pipe body. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solution of the present invention in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The connecting device for HVAC pipes in the HVAC engineering involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0022] The utility model provides a connection device for HVAC pipes in HVAC engineering, including a connection pipe 1, both ends of the connection pipe 1 are provided with a second connection flange 2, the connection between the connection pipe 1 and the second connection flange 2 is provided with a sealing ring 3, the surface of the second connection flange 2 is provided with through holes at equal distances, the through holes on the surface of the second connection flange 2 are installed with fixing bolts 4, the side of the second connection flange 2 away from the connection pipe 1 is fixedly connected with a mounting tube 5, the outer side of the second connection flange 2 away from the end of the connection pipe 1 is sleeved with a HVAC pipe body 6, the inner wall of the mounting tube 5 is provided with a plurality of mounting cavities at equal distances, the mounting cavities on the inner wall of the mounting tube 5 are provided with limit blocks 501, the surfaces of the limit blocks 501 are movably connected with limit bolts 502, the surface of the mounting tube 5 is provided with threaded grooves at equal distances, The side surfaces of the limit bolt 502 are threadedly connected to the threaded grooves on the side surfaces of the mounting tube 5, and the side of the limit block 501 away from the limit bolt 502 is matched with the side surfaces of the HVAC pipe body 6. When in use, the HVAC pipe body 6 is sleeved on the outer side of the slot 202 on the side surface of the second connecting flange 2, and then the limit bolt 502 is rotated. When the limit bolt 502 rotates, it will push the limit block 501 through the threaded hole on the side surface of the mounting tube 5, so that the limit block 501 generates a certain extrusion force on the side surface of the HVAC pipe body 6, and the HVAC pipe body 6 is fixed to the outer side of the second connecting flange 2 through the mutual extrusion of the slot 202 and the limit block 501, thereby preventing the HVAC pipe body 6 and the second connecting flange 2 from falling off during long-term use of the device, thereby improving the stability of the device.

[0023] Furthermore, an anti-slip groove 101 is fixedly connected to the side of the connecting pipe 1, and both ends of the connecting pipe 1 are fixedly connected to a first connecting flange 102. The surface of the first connecting flange 102 is evenly spaced with through holes, and the inner wall of the first connecting flange 102 is provided with a first installation groove 1021. When in use, the anti-slip groove 101 is provided to facilitate fixing of the connecting pipe 1, thereby facilitating the installation and disassembly of the device.

[0024] Furthermore, the second connecting flange 2 is fixedly connected to one end close to the connecting pipe 1 with a sleeve 201, and the side of the second connecting flange 2 is fixedly connected to a groove 202, and the side of the groove 202 is adapted to the inner wall of the HVAC pipe body 6. The second connecting flange 2 is provided with a second mounting groove 203 at one end close to the sleeve 201, and the outer diameter of the sleeve 201 is adapted to the inner diameter of the connecting pipe 1, and the side of the sealing ring 3 is adapted to the inner wall of the first mounting groove 1021 and the inner wall of the second mounting groove 203. When in use, the sealing ring 3 is provided at the connection between the connecting pipe 1 and the second connecting flange 2, and the sealing ring 3 is located at the inner wall of the first mounting groove 1021 and the second mounting groove 203. The sleeve 201 will isolate the heating from the sealing ring 3, which can prevent the heating from directly contacting the sealing ring 3, thereby increasing the service life of the sealing ring 3 and further improving the sealing performance of the device.

[0025] Furthermore, one end of the fixing bolt 4 away from the second connecting flange 2 passes through the through hole on the surface of the first connecting flange 102 and is threadedly connected with a nut, and the first connecting flange 102 is fixedly connected to the second connecting flange 2 by the fixing bolt 4. When in use, the fixing bolt 4 is passed through the through holes on the first connecting flange 102 and the second connecting flange 2 in turn, and then the fixing bolt 4 is matched with its corresponding nut, so that the connecting pipe 1 and the second connecting flange 2 are fixedly connected together, which is beneficial to improving the stability of the device.

[0026] The working principle of the utility model is as follows: when in use, firstly, the HVAC pipe body 6 is sleeved on the outer side of the slot 202 on the side of the second connecting flange 2, and then the limit bolt 502 is rotated. When the limit bolt 502 is rotated, it will push the limit block 501 through the threaded hole on the side of the mounting tube 5, so that the limit block 501 generates a certain extrusion force on the side of the HVAC pipe body 6, and the HVAC pipe body 6 is fixed to the outer side of the second connecting flange 2 through the mutual extrusion of the slot 202 and the limit block 501, thereby preventing the HVAC pipe body 6 and the second connecting flange 2 from falling off during long-term use of the device, thereby improving the stability of the device, and then the second connecting The sleeve 201 at one end of the connecting flange 2 is inserted into the inner wall of the connecting pipe 1, and then the fixing bolts 4 are used to pass through the through holes on the first connecting flange 102 and the second connecting flange 2 in turn, and then the fixing bolts 4 are matched with the corresponding nuts to fix the connecting pipe 1 and the second connecting flange 2 together. A sealing ring 3 is provided at the connection between the connecting pipe 1 and the second connecting flange 2, and the sealing ring 3 is located on the inner walls of the first mounting groove 1021 and the second mounting groove 203. The sleeve 201 will isolate the heating from the sealing ring 3, which can prevent the heating from directly contacting the sealing ring 3, thereby increasing the service life of the sealing ring 3 and further improving the sealing performance of the device.

[0027] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0028] Secondly: The drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A connection device for HVAC pipes in HVAC engineering, comprising a connection pipe (1), characterized in that: Both ends of the connecting pipe (1) are provided with a second connecting flange (2), and a sealing ring (3) is provided at the connection between the connecting pipe (1) and the second connecting flange (2). Through holes are evenly spaced on the surface of the second connecting flange (2), and fixing bolts (4) are installed in the through holes on the surface of the second connecting flange (2). The side of the second connecting flange (2) away from the connecting pipe (1) is fixedly connected with a mounting cylinder (5), and the outer side of the second connecting flange (2) away from the connecting pipe (1) is sleeved with a main HVAC pipe. The mounting tube (6) is provided with a plurality of mounting cavities at equal intervals on the inner wall of the mounting tube (5), and a limit block (501) is provided in the mounting cavity on the inner wall of the mounting tube (5). The surface of the limit block (501) is movably connected with a limit bolt (502), and the surface of the mounting tube (5) is provided with thread grooves at equal intervals, and the side of the limit bolt (502) is threadedly connected with the thread groove on the side of the mounting tube (5), and the side of the limit block (501) away from the limit bolt (502) is adapted to the side of the HVAC pipe body (6).

2. A connection device for HVAC pipes in HVAC engineering according to claim 1, characterized in that: The side of the connecting pipe (1) is fixedly connected with an anti-slip groove (101), both ends of the connecting pipe (1) are fixedly connected with a first connecting flange (102), the surface of the first connecting flange (102) is provided with through holes at equal intervals, and the inner wall of the first connecting flange (102) is provided with a first installation groove (1021).

3. A connection device for HVAC pipes in HVAC engineering according to claim 2, characterized in that: The end of the second connecting flange (2) close to the connecting pipe (1) is fixedly connected to a sleeve (201), the side of the second connecting flange (2) is fixedly connected to a slot (202), the side of the slot (202) is adapted to the inner wall of the HVAC pipe body (6), and the end of the second connecting flange (2) close to the sleeve (201) is provided with a second mounting slot (203).

4. The connection device for HVAC pipes in HVAC engineering according to claim 3, characterized in that: The outer diameter of the sleeve (201) is matched with the inner diameter of the connecting pipe (1).

5. A connection device for HVAC pipes in HVAC engineering according to claim 4, characterized in that: The side surfaces of the sealing ring (3) are adapted to the inner wall of the first installation groove (1021) and the inner wall of the second installation groove (203).

6. The connection device for HVAC pipes in HVAC engineering according to claim 1, characterized in that: The ends of the fixing bolts (4) away from the second connecting flange (2) are threadedly connected to nuts through through holes on the surface of the first connecting flange (102), and the first connecting flange (102) is fixedly connected to the second connecting flange (2) via the fixing bolts (4).

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