A pipe connection device for building heating

Abstract

The present application discloses a building heating pipe connection device, which relates to the technical field of building heating and ventilation, and improves the problem of complicated steps and long time consumption when connecting heating and ventilation pipes. The device comprises a connector and two auxiliary parts, wherein both ends of the connector are provided with a first plug-in slot, the connector is provided with a through hole, and the auxiliary part is penetrated by a second plug-in slot; the auxiliary part is provided with a first fixing mechanism, the first fixing mechanism comprises a first driving member and a plurality of abutting members, and the rotation of the driving member drives the abutting member to rotate; the connector is provided with a second fixing mechanism, the second fixing mechanism comprises a second driving member and a plurality of clamping members, and the rotation of the second driving member can drive the clamping member to rotate. After the auxiliary part is plugged into the connector, the clamping member restricts the movement of the auxiliary part, and the clamping member restricts the rotation of the first driving member. The present application can facilitate the connection of heating and ventilation pipes, and at the same time can improve the connection strength of the heating and ventilation pipes.

Description

Technical Field

[0001] The present application relates to the technical field of building heating and ventilation, and in particular to a pipe connection device for building heating and ventilation. Background Art

[0002] HVAC is an integral part of a building, encompassing heating, ventilation, and air conditioning. HVAC ducts are the pipes required for HVAC, used to circulate air. They are used in a wide range of applications, including: purification system return air ducts, central air conditioning ducts, industrial supply and exhaust ducts, environmental protection system intake and exhaust ducts, mining gas extraction pipes, and mining rubberized fabric ducts.

[0003] The thickness and specifications of HVAC ducts vary depending on requirements. Typically, when connecting two pipes of different diameters, both ends of the duct are connected to fittings (such as elbows and reducers). When connecting two pipes of different diameters, it's usually necessary to first measure their diameters, find the appropriate connector based on the measurements, and then secure the two pipes together using other fittings.

[0004] The preparation and operation processes of the above connection methods are relatively complicated, and it takes a long time to connect the HVAC pipes. Therefore, there is an urgent need for a pipe connection device that can quickly and conveniently connect the HVAC pipes. Summary of the Invention

[0005] In order to improve the problem of complicated steps and long time consumption when connecting HVAC pipes, the present application provides a pipe connection device for building heating.

[0006] This application provides a building heating universal pipe connection device, which adopts the following technical solution:

[0007] A pipe connection device for building heating, comprising a connector and two auxiliary connectors for facilitating the connection of a heating pipe to a connector head. Both ends of the connector are provided with a first plug-in slot for inserting the auxiliary connector. A through hole for connecting the two first plug-in slots is provided inside the connector. A second plug-in slot for inserting the heating pipe is penetrated by the auxiliary connector. The slot wall of the second plug-in slot has a stepped structure adapted to heating pipes of different diameters. After the auxiliary connector is plugged into the connector, the second plug-in slot communicates with the through hole.

[0008] The auxiliary member is provided with a first fixing mechanism for fixing it to the end of the HVAC pipe. The first fixing mechanism includes a first driving member and a plurality of holding members for holding the outside of the HVAC pipe tightly. The first driving member and the holding members are both rotatably connected to the auxiliary member. The holding members are hinged to the first driving member. The rotation of the first driving member drives the holding members to rotate.

[0009] The connecting member is provided with a second fixing mechanism for fixing the auxiliary member to itself, the second fixing mechanism includes a second driving member and a plurality of clamping members for clamping the auxiliary member, the second driving member and the clamping member are both rotatably connected to the connecting member, the rotation of the second driving member can drive the clamping member to rotate, after the auxiliary member is plugged into the connecting member, the clamping member restricts the movement of the auxiliary member, and the clamping member restricts the rotation of the first driving member.

[0010] By adopting the above technical solution, the pipe connecting device can connect HVAC pipes of different diameters. At the same time, the connection process is convenient and quick, and the two HVAC pipes connected by the pipe connecting device have a high connection strength. In addition, the clamping part can fix the fastening part while fixing the auxiliary part, so that the first fixing mechanism and the second fixing mechanism are interlocked, thereby improving the reliability and safety of the pipe connecting device during use.

[0011] Optionally, the first fixing mechanism also includes a control component for controlling the rotation of the first driving member, the control component includes a rotating member, the rotating member is rotatably connected to the auxiliary member, the outer side of the first driving member has a plurality of slots, the inner side of the rotating member has a plurality of card blocks, the plurality of card blocks correspond one-to-one to the plurality of slots, and the card blocks are inserted into the card slots.

[0012] By adopting the above technical solution, rotating the rotating member can drive the first driving member to rotate, thereby driving the fastening member to rotate to fasten and fix the HVAC pipe, which can facilitate the use of the first fixing mechanism.

[0013] Optionally, the control component also includes a control member for controlling whether the rotating member can rotate, and the rotating member is provided with a plurality of sliding grooves for the control member to slideably connect with the rotating member. The control component also includes a first elastic member, and the two ends of the first elastic member are respectively connected to the rotating member and the control member. The first elastic member drives the control member to slide in a direction away from the first driving member. When the first elastic member drives the control member to slide to the position farthest from the first driving member, the control member is fixedly connected to the auxiliary member.

[0014] By adopting the above technical solution, the use of the control member can be facilitated. After the user presses the control member, the rotating member can drive the first driving member to rotate. After releasing the control member, the first elastic member can drive the control member to slide and reset, which is convenient for the next use. The reset control member will limit the rotation of the rotating member, so that the HVAC pipe remains tightly fixed.

[0015] Optionally, a limiting member for limiting the sliding of the control member is provided on the auxiliary member, and one end of the control member has a pressing portion, and when the control member abuts against the limiting member, the pressing portion is located above the limiting member;

[0016] The control member is provided with a positioning protrusion, and the limiting member is provided with a plurality of positioning grooves for the positioning protrusion to be inserted into. When the control member and the limiting member abut against each other, the positioning protrusion is inserted into the positioning groove, and the limiting member limits the rotation of the rotating member.

[0017] By adopting the above technical solution, the use of the first fixing mechanism can be further facilitated. After pressing the control member, the rotating member is rotated to drive the tightening member to tighten and fix the HVAC pipe in the second plug-in groove. Then, the control member is released. The control member is reset under the action of the first elastic member. At the same time, the positioning protrusion will be stuck in the positioning groove, so that the control component is fixed relative to the auxiliary member, so that the first fixing mechanism can keep the HVAC pipe and the auxiliary member fixed.

[0018] Optionally, one end of the clamping member passes through the connecting member, and the end of the clamping member away from the connecting member has a clamping portion. The control member is penetrated by a through hole. After the auxiliary member is plugged into the connecting member, the clamping portion passes through the through hole. After the second driving member rotates to drive the clamping member to rotate, the clamping portion and the end face of the control member facing away from the connecting member are abutted.

[0019] By adopting the above technical solution, it is possible to facilitate interlocking between the first fixing mechanism and the second fixing mechanism, effectively reducing the probability of the HVAC pipe and the auxiliary part being separated due to the user mistakenly pressing the control part after the HVAC pipe and the auxiliary part are fixed, and further improving the reliability and safety of the pipe connection device.

[0020] Optionally, two limit blocks are provided on the connecting member for limiting the rotation of the second driving member, and the second driving member extends outward with a limit portion, and the limit portion is located between the two limit blocks. When the limit portion abuts against one limit block, the clamping member rotates until the projection of the clamping portion on the control member coincides with the perforation; when the limit portion abuts against the other limit block, the clamping member rotates until the projection of the clamping portion on the control member is misaligned with the perforation.

[0021] By adopting the above technical solution, the use of the second driving member can be facilitated, and the probability of the second driving member over-rotating or not rotating properly, thereby affecting the connection strength between the auxiliary member and the connecting member, can be reduced.

[0022] Optionally, the auxiliary component is covered with an elastic sealing layer, and when the auxiliary component is plugged into the connecting component, the sealing layer fits and abuts against the wall of the first plug-in slot.

[0023] By adopting the above technical solution, after the auxiliary part and the connecting part are plugged in and fixed, the sealing layer can improve the air tightness of the connection position between the auxiliary part and the connecting part; at the same time, when the auxiliary part and the connecting part expand and contract due to heat, the sealing layer can provide deformation space for the auxiliary part and the connecting part, and maintain the air tightness of the connection position between the two when the auxiliary part and the connecting part change in volume, thereby reducing the impact of temperature changes on the auxiliary part and the connecting part.

[0024] Optionally, the connecting member includes two assemblies with the same structure, the two assemblies are fixedly connected, and a plurality of sealing rings are provided between the two assemblies.

[0025] By adopting the above technical solution, the connector itself has space for its own thermal expansion and contraction, while ensuring the airtightness of the connection between the two assemblies, further reducing the impact of temperature changes on the connector.

[0026] Optionally, a number of temperature sensing components whose volumes can change with temperature are provided between the two assemblies. The interior of the connecting component has a number of first installation grooves for installing the temperature sensing components. The interior of the connecting component also has a number of ventilation holes. The temperature sensing component divides the first installation groove into two enclosed independent spaces. One end of the ventilation hole is connected to an independent space, and the other end of the ventilation hole passes through the groove wall of the first plug-in groove. After the position of the temperature sensing component changes in the first installation groove, the independent space connected to the ventilation hole becomes larger.

[0027] By adopting the above technical solution, when the volume of the temperature-sensing component changes due to temperature changes, a pressure difference can be formed between the two independent spaces, so that the pressure in the independent space connected to the vent hole is reduced, so that the auxiliary component can be adsorbed on the wall of the first plug-in slot through the sealing layer to strengthen the fixation with the connecting component.

[0028] In summary, this application has at least one of the following beneficial effects:

[0029] 1. It can connect HVAC pipes of different diameters, and the connection process is convenient and quick, and its use has high reliability and safety;

[0030] 2. It can adapt to different temperature changes and ensure the airtightness of the pipe connection while thermal expansion and contraction occur;

[0031] 3. After the temperature changes, the connection strength between the auxiliary parts and the connecting parts can be strengthened by the change of air pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic structural diagram of a building heating universal pipe connection device according to an embodiment of the present application;

[0033] Figure 2 is a cross-sectional view of an auxiliary connector in an embodiment of the present application;

[0034] Figure 3 This is a cross-sectional view of a building heating pipe connection device according to an embodiment of the present application;

[0035] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0036] Figure 5 It is a cross-sectional view of the connecting member in the embodiment of the present application.

[0037] Explanation of reference numerals: 1. HVAC pipe; 2. Connector; 21. First plug-in slot; 22. Through hole; 23. Third mounting slot; 24. Stopper; 25. Assembly; 251. Boss; 252. Groove; 253. First mounting slot; 254. Mounting space; 255. Independent space; 256. Ventilation hole; 3. Auxiliary connector; 31. Second plug-in slot; 32. Second mounting slot; 33. Giving way slot; 34. Stopper; 341. Positioning slot; 4. First fixing mechanism; 41. Pressing member; 411. Pressing portion; 42. First drive Moving part; 421, movable groove; 422, card slot; 43, control component; 431, rotating part; 4311, card block; 4312, sliding groove; 432, control part; 4321, pressing part; 4322, positioning protrusion; 4323, perforation; 433, first elastic part; 5, second fixing mechanism; 51, clamping part; 511, clamping part; 52, second driving part; 521, limiting part; 53, gear part; 6, sealing layer; 7, sealing ring; 8, temperature sensing part; 9, positioning component; 91, positioning plate; 92, second elastic part. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-5 This application is described in further detail.

[0039] The embodiment of the present application discloses a building heating pipe connection device for connecting two heating and ventilation pipes.

[0040] Reference Figure 1 The pipe connection device includes a connector 2 for connecting two HVAC pipes 1 and an auxiliary connector 3 for assisting in connecting the HVAC pipes 1 to the connector 2. The two HVAC pipes 1 are connected via the connector 2 and the two auxiliary connectors 3. In this embodiment, the HVAC pipes 1 are preferably circular pipes, and the two HVAC pipes 1 have different diameters.

[0041] Reference Figure 2 and Figure 3 The auxiliary connector 3 is a cylindrical structure. It is penetrated by a second insertion groove 31 for the HVAC pipe 1. The axis of the second insertion groove 31 coincides with the axis of the auxiliary connector 3. The second insertion groove 31 has a stepped structure on the groove wall at one end along the axis of the auxiliary connector 3. The radial dimension of each step corresponds to a different diameter of the HVAC pipe 1. After the HVAC pipes 1 of different diameters are inserted into the second insertion groove 31, the end of the HVAC pipe 1 fits and abuts against the end surface of one of the steps of the stepped structure.

[0042] Reference Figure 2 and Figure 3 The auxiliary component 3 is equipped with a first fixing mechanism 4 for fixing the auxiliary component 3 to the HVAC pipe 1. The first fixing mechanism 4 includes a plurality of fastening members 41 for fastening the HVAC pipe 1, a first driving member 42 for driving the fastening members 41, and a control assembly 43 for driving the first driving member 42. In this embodiment, four fastening members 41 are preferably installed.

[0043] The auxiliary component 3 has a second mounting slot 32 for mounting the first drive member 42, and four clearance slots 33 for mounting the abutting member 41. The second mounting slot 32 is an annular slot, with its axis coinciding with the axis of the auxiliary component 3. The second mounting slot 32 is open on the outer surface of the auxiliary component 3. The clearance slots 33 connect the second mounting slot 32 with the second insertion slot 31, and the four clearance slots 33 are arranged in a circular array around the axis of the auxiliary component 3.

[0044] Reference Figure 2 and Figure 3 The first driving member 42 is a circular ring structure as a whole. The first driving member 42 is sleeved on the auxiliary member 3 and is located in the second mounting groove 32. The first driving member 42 is rotatably connected to the auxiliary member 3, and the rotation axis of the first driving member 42 coincides with the axis of the auxiliary member 3. The tightening member 41 is a rod-shaped structure as a whole. One end of the tightening member 41 in the longitudinal direction is rotatably connected to the first driving member 42, and its rotation axis is parallel to the axis of the auxiliary member 3. The first driving member 42 is provided with a movable groove 421 for the tightening member 41 to move with its rotationally connected portion; the other end of the tightening member 41 in the longitudinal direction is a tightening portion 411 that abuts against the HVAC pipe 1. The tightening portion 411 is elastic and has a rough surface; the middle portion of the tightening member 41 is rotatably connected to the auxiliary member 3, and its rotation axis is also parallel to the axis of the auxiliary member 3. Rotating the first driving member 42 causes the retaining member 41 to rotate along its central axis. The retaining member 41 rotates and abuts against the HVAC pipe 1. The four retaining members 41 abut against the HVAC pipe 1 at four locations, thereby securing the HVAC pipe 1 inserted into the second insertion slot 31. During the rotation of the retaining member 41, the end of the retaining member 41 away from the abutting portion 411 moves within the movable slot 421.

[0045] The rotation of the fastening piece 41 is limited. When the fastening piece 41 is rotated to the extreme position toward the groove wall close to the second plug-in groove 31, the fastening portion 411 abuts against the groove wall of the second plug-in groove 31. At this time, the HVAC pipe 1 with the largest diameter can be inserted into the second plug-in groove 31, and there is a distance between the abutting portion and the HVAC pipe 1 with the largest diameter; when the fastening piece 41 is rotated to the extreme position toward the groove wall away from the second plug-in groove 31, the length directions of adjacent fastening pieces 41 are perpendicular to each other. At this time, the HVAC pipe 1 with the smallest diameter cannot be inserted into the second plug-in groove 31.

[0046] Reference Figure 2 and Figure 3 The control assembly 43 includes a rotating member 431 and a plurality of control members 432. In this embodiment, four control members 432 are preferably installed. The auxiliary member 3 has stoppers 34 on both sides of the opening of the second installation slot 32, and a space is formed between the two stoppers 34 for the installation of the control assembly 43. The rotating member 431 is an annular structure, which is sleeved on the auxiliary member 3 and surrounds the first driving member 42. A plurality of slots 422 are formed on the side of the first driving member 42 facing away from the second plug-in slot 31, and the plurality of slots 422 are distributed in a circular array on the first driving member 42 with the axis of the first driving member 42 as the axis; a plurality of clamping blocks 4311 are formed on the side of the rotating member 431 close to the first driving member 42, and the plurality of clamping blocks 4311 are distributed in a circular array on the rotating member 431 with the axis of the rotating member 431 as the axis, and the number of the clamping blocks 4311 is equal to the number of the slots 422, and the clamping blocks 4311 correspond to the slots 422 one by one and the clamping blocks 4311 are clamped into the slots 422.

[0047] The rotating member 431 has four radially extending sliding grooves 4312 for mounting the control member 432. These four sliding grooves 4312 are arranged in a circular array about the axis of the rotating member 431. The control member 432 can slide radially along the rotating member 431 within the sliding grooves 4312. One end of the control member 432 has a pressing portion 4321 for driving the control member 432 to slide. When the control member 432 is installed in the sliding grooves 4312, the pressing portion 4321 is located at the end of the control member 432 away from the first driving member 42. The control assembly 43 also includes a plurality of first elastic members 433 mounted in the sliding grooves 4312. One end of the first elastic member 433 is fixedly connected to the rotating member 431, and the other end is fixedly connected to the control member 432. The first elastic members 433 drive the control member 432 to slide away from the first driving member 42. In this embodiment, the first elastic member 433 is preferably a compression spring.

[0048] The first elastic member 433 drives the control member 432 to slide away from the first driving member 42 until the control member 432 abuts against the limiting member 34 . At this time, the pressing portion 4321 passes through the space between the two limiting members 34 for the user to press.

[0049] Reference Figure 2 、 Figure 3 and Figure 4The control member 432 also has positioning protrusions 4322 on both sides near the pressing portion 4321. The two limiting members 34 each have a plurality of positioning grooves 341 on the facing sides thereof, which mate with the positioning protrusions 4322. The positioning grooves 341 are arranged in a circular array on the limiting member 34, with the axis of the auxiliary member 3 as the axis. When the first elastic member 433 drives the control member 432 to slide until it abuts the limiting member 34, the two positioning protrusions 4322 on the control member 432 respectively engage with the positioning grooves 341 of the limiting member 34, thereby restricting the rotation of the rotating member 431.

[0050] Reference Figure 3 and Figure 5 The connector 2 is cylindrical in structure. It has two first insertion slots 21 for the auxiliary connector 3 to be inserted into, and a through hole 22 connecting the two first insertion slots 21. The axes of the first insertion slots 21, the through hole 22, and the connector 2 all coincide. The end of the auxiliary connector 3, axially away from the first fixing mechanism 4, is the plug-in end for plugging into the connector 2. This plug-in end has a frustum-shaped structure, and the shape of the first insertion slots 21 is adapted to fit this end.

[0051] The connector 2 is equipped with a second fixing mechanism 5 for securing the auxiliary component 3 to the connector after insertion. Third mounting slots 23 for the second fixing mechanism 5 are provided on the outer sides of both ends of the connector 2. The second fixing mechanism 5 includes four clamping members 51 for clamping and securing the auxiliary component 3 and a second driving member 52 for actuating the clamping members 51.

[0052] Reference Figure 3 、 Figure 4 and Figure 5 The clamping member 51 is a rod-shaped structure as a whole. One end of the clamping member 51 in the length direction is located in the third mounting groove 23 and is rotatably connected to the connecting member 2. The rotation axis of the clamping member 51 is parallel to the axis of the connecting member 2. The other end of the clamping member 51 in the length direction passes through the connecting member 2 and is located on one side of the axis direction of the connecting member 2. The four clamping members 51 are distributed in a circular array on the connecting member 2 with the axis of the connecting member 2 as the axis.

[0053] Reference Figure 3 and Figure 5 The second driving member 52 is an annular structure. It is sleeved on the connecting member 2, partially located in the third mounting slot 23 and partially extending out of the third mounting slot 23. The second driving member 52 is rotationally connected to the connecting member 2, and the rotation axis of the second driving member 52 coincides with the axis of the connecting member 2. The second driving member 52 surrounds the four clamping members 51. The ends of the clamping members 51 located in the third mounting slot 23 have a gear portion 53. The side of the second driving member 52 proximal to the clamping members 51 also has a gear portion 53. The second driving member 52 simultaneously engages with the four clamping members 51.

[0054] Reference Figure 1 and Figure 3 The second driving member 52 rotates to simultaneously drive the four clamping members 51 to rotate. The second driving member 52 is limited in rotation on the connecting member 2. The connecting member 2 has two limit blocks 24 for limiting the rotation of the second driving member 52. The second driving member 52 has a limit portion 521 located between the two limit blocks 24.

[0055] Reference Figure 1 and Figure 4 The clamping member 51 has a clamping portion 511 at one end away from the gear portion 53. The clamping portion 511 is generally rod-shaped, and its length is perpendicular to the length of the clamping member 51. When the second driving member 52 rotates until the limiting portion 521 abuts against one limiting block 24, the clamping member 51 rotates until its axis is aligned with the plane of the length of the clamping portion 511 and the length of the clamping member 51. When the second driving member 52 rotates until the limiting portion 521 abuts against the other limiting block 24, the clamping member 51 rotates 90°.

[0056] Reference Figure 2 and Figure 4 , a through hole 4323 is provided on the pressing portion 4321 of the control member 432 for the clamping member 51 to pass through. When the second driving member 52 is rotated to the limit portion 521 and abuts against a limit block 24, the HVAC pipe 1 is fixed on the auxiliary member 3 and the HVAC pipe 1 is connected to the connecting member 2 through the auxiliary member 3. At this time, the clamping member 51 passes through the through hole 4323, and the clamping portion 511 is located on the side of the control member 432 away from the connecting member 2; at this time, the second driving member 52 is rotated to the limit portion 521 and abuts against the other limit block 24. After the second driving member 52 drives the clamping member 51 to rotate, the end face of the clamping portion 511 close to the third mounting groove 23 is in contact with the end face of the control member 432 away from the connecting member 2 and abuts against each other.

[0057] In this embodiment, the auxiliary component 3 and the connecting component 2 are both made of metal and will expand and contract due to temperature changes.

[0058] Reference Figure 3 and Figure 5 The auxiliary component 3 is also coated with a sealing layer 6 on the outside of its truncated cone structure. After the auxiliary component 3 is plugged into the connector 2, the sealing layer 6 abuts against the wall of the first insertion slot 21. The sealing layer 6 is elastic. When the connector 2 secures the auxiliary component 3 to itself via the second fixing assembly, the four clamping members 51 exert a force on the auxiliary component 3 parallel to the axis of the auxiliary component 3, compressing the sealing layer 6 under this force.

[0059] The sealing layer 6 is initially squeezed before the HVAC pipe 1 is ventilated. After the HVAC pipe 1 is ventilated, if the temperature of the gas passed through the HVAC pipe 1 is lower than the outside temperature, the volumes of the auxiliary parts 3 and the connecting parts 2 will shrink slightly. At this time, the squeezing of the sealing layer 6 is reduced, but the sealing layer 6 is still in an squeezed state and can seal the connection gap between the auxiliary parts 3 and the connecting parts 2; if the temperature of the gas passed through the HVAC pipe 1 is higher than the outside temperature, the volumes of the auxiliary parts 3 and the connecting parts 2 will expand slightly. At this time, the squeezing of the sealing layer 6 is expanded, and the sealing layer 6 can still seal the connection gap between the auxiliary parts 3 and the connecting parts 2.

[0060] Reference Figure 1 and Figure 3 The connecting member 2 is an assembly structure, including two assemblies 25 with the same structure. The assembly 25 is also a cylindrical structure as a whole. A boss 251 is provided on the outer side of one end of the assembly 25 in the axial direction. After the bosses 251 of the two assemblies 25 are fitted against each other, the two are fixedly connected by a number of bolts and nuts.

[0061] Reference Figure 3 Two sealing rings 7 are also installed between the two assemblies 25. A groove 252 is provided on the end surface of the assembly 25 in the axial direction, close to the boss 251, for positioning the sealing rings 7. The two sealing rings 7 have different radial dimensions, and one sealing ring 7 surrounds the other sealing ring 7. After the two assemblies 25 are fixedly connected, the two assemblies 25 clamp the two sealing rings 7, and a gap exists between the two assemblies 25.

[0062] If the temperature of the gas flowing through the HVAC pipe 1 is lower than the outside temperature, the clamping force of the sealing ring 7 is reduced, but the sealing ring 7 can still seal the connecting gap between the two assemblies 25; if the temperature of the gas flowing through the HVAC pipe 1 is higher than the outside temperature, the gap between the two assemblies 25 can reduce the probability of the two assemblies 25 being squeezed against each other and damaged after a slight expansion in volume.

[0063] Reference Figure 3A temperature sensor 8 is also installed between the two assemblies 25 to alleviate the thermal expansion and contraction of the connector 2. The temperature sensor 8 is also made of metal, and the thermal conductivity of the temperature sensor 8 is higher than that of the connector 2 and the auxiliary component 3. The assembly 25 is also provided with four first installation grooves 253 for installing the temperature sensor 8 on the end surface where the grooves 252 are located. The first installation grooves 253 are located between the two grooves 252. After the two assemblies 25 are fixedly connected, the two first installation grooves 253 are combined to form an installation space 254 for installing the temperature sensor 8. The installation space 254 is larger than the volume of the temperature sensor 8. A positioning assembly 9 is also installed in the installation space 254 to fix the position of the temperature sensor 8 in the installation space 254. The positioning assembly 9 includes a positioning plate 91 and a plurality of second elastic members 92. After the positioning plate 91 is installed in the installation space 254, the position is fixed, and the positioning plate 91 is located on the side of the temperature sensor 8 away from the through hole 22. Several second elastic members 92 are positioned between the positioning plate 91 and the temperature sensing member 8. The ends of the second elastic members 92 are fixedly connected to the positioning plate 91 and the temperature sensing member 8, respectively. The second elastic members 92 force the temperature sensing member 8 toward the through hole 22, causing the temperature sensing member 8 to abut against the wall of the first mounting groove 253. The temperature sensing member 8 divides the mounting space 254 into two independent spaces 255. In this embodiment, the second elastic members 92 are preferably also compression springs.

[0064] Reference Figure 3 Four ventilation holes 256 are also defined within assembly 25. One end of each vent hole 256 communicates with mounting space 254, while the other end extends through the wall of second insertion slot 31 and communicates with second insertion slot 31. If the temperature of the air flowing through HVAC duct 1 is lower than the ambient temperature, the end of each vent hole 256 facing away from second insertion slot 31 communicates with independent space 255 on the side of temperature sensor 8 facing away from through-hole 22. When HVAC duct 1 is ventilated, the volume of both connector 2 and temperature sensor 8 shrinks slightly due to temperature changes, with the temperature sensor 8 experiencing a greater volume change. Under the action of the second elastic member 92, the temperature sensing member 8 is kept against the groove wall of the first installation groove 253. During the process of thermal expansion and contraction, the volume of the independent space 255 connected to the vent hole 256 after ventilation is larger than the volume of the independent space 255 connected to the vent hole 256 before ventilation, so that the sealing layer 6 can be adsorbed on the groove wall of the second plug-in groove 31, thereby improving the connection strength between the auxiliary member 3 and the connecting member 2; if the temperature of the gas ventilated by the HVAC pipe 1 is higher than the outside temperature, the end of the vent hole 256 away from the second plug-in groove 31 is connected to the independent space 255 on the side of the temperature sensing member 8 close to the through hole 22, and the subsequent principles and effects are the same as above. In this embodiment, only the first case is shown in the drawings.

[0065] When a leak occurs at the sealing ring 7 between the two assemblies 25 near the through hole 22, gas flows through the gap between the two assemblies 25 into the independent space 255 near the through hole 22. The gas then drives the temperature sensing element 8 to overcome the force of the second elastic element 92 and move away from the through hole 22. The force exerted by the gas on the temperature sensing element 8 is equivalent to the force exerted by the second elastic element 92 on the temperature sensing element 8. Under the combined forces, the temperature sensing element 8 vibrates. During this vibration, the temperature sensing element 8 collides with the assembly 25, producing a sound that alerts personnel and helps them locate the leak.

[0066] In this embodiment, the installation of the first fixing mechanism 4 and the second fixing mechanism 5 are structures well known to those skilled in the art, and are not described here in detail, and are also omitted in the drawings.

[0067] The implementation principle of the building heating pipe connection device in the embodiment of the present application is as follows:

[0068] First, connect the end of the HVAC pipe 1 with the auxiliary part 3, then press the control part 432 to separate the positioning protrusion 4322 from the positioning groove 341, and then rotate the rotating part 431 to drive the first driving part 42 to rotate. The first driving part 42 rotates and drives the clamping part 41 to rotate to clamp the HVAC pipe 1. Then release the control part 432 to make the positioning protrusion 4322 re-engage the positioning groove 341, so that the position of the rotating part 431 is fixed, and then connect the HVAC pipe 1 with the auxiliary part 3 with the connecting part 2, so that the clamping part 51 passes through the through hole 4323 on the control part 432, and then rotate the second driving part 52 to make the clamping part 51 rotate to clamp the auxiliary part 3 and the connecting part 2.

[0069] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A building heating pipe connection device, characterized in that: The invention comprises a connecting piece (2) and two auxiliary connecting pieces (3) for facilitating the connection between the heating and ventilation pipe (1) and the connecting head, wherein both ends of the connecting piece (2) are provided with a first plug-in slot (21) for inserting the auxiliary connecting piece (3), the interior of the connecting piece (2) is provided with a through hole (22) for connecting the two first plug-in slots (21), the auxiliary connecting piece (3) is penetrated by a second plug-in slot (31) for inserting the heating and ventilation pipe (1), the groove wall of the second plug-in slot (31) has a stepped structure adapted to the heating and ventilation pipes (1) of different diameters, and after the auxiliary connecting piece (3) is plugged into the connecting piece (2), the second plug-in slot (31) is communicated with the through hole (22); The auxiliary member (3) is provided with a first fixing mechanism (4) for fixing it to the end of the HVAC pipe (1), the first fixing mechanism (4) includes a first driving member (42) and a plurality of holding members (41) for holding the outside of the HVAC pipe (1), the first driving member (42) and the holding members (41) are both rotatably connected to the auxiliary member (3), the holding members (41) are hinged to the first driving member (42), and the first driving member (42) rotates to drive the holding members (41) to rotate; The connecting member (2) is provided with a second fixing mechanism (5) for fixing the auxiliary member (3) to itself, the second fixing mechanism (5) includes a second driving member (52) and a plurality of clamping members (51) for clamping the auxiliary member (3), the second driving member (52) and the clamping member (51) are both rotatably connected to the connecting member (2), the rotation of the second driving member (52) can drive the clamping member (51) to rotate, after the auxiliary member (3) is plugged into the connecting member (2), the clamping member (51) restricts the movement of the auxiliary member (3), and the clamping member (51) restricts the rotation of the first driving member (42); The first fixing mechanism (4) further includes a control assembly (43) for controlling the rotation of the first driving member (42), the control assembly (43) including a rotating member (431), the rotating member (431) being rotatably connected to the auxiliary member (3), the outer side of the first driving member (42) having a plurality of slots (422), the inner side of the rotating member (431) having a plurality of blocks (4311), the plurality of blocks (4311) corresponding to the plurality of slots (422), the blocks (4311) being engaged in the slots (422); The control assembly (43) further includes a control member (432) for controlling whether the rotating member (431) can rotate. The rotating member (431) is provided with a plurality of sliding grooves (4312) for the control member (432) to be slidably connected thereto. The control assembly (43) further includes a first elastic member (433). Two ends of the first elastic member (433) are respectively connected to the rotating member (431) and the control member (432). The first elastic member (433) drives the control member (432) to slide in a direction away from the first driving member (42). When the first elastic member (433) drives the control member (432) to slide to a position farthest from the first driving member (42), the control member (432) is fixedly connected to the auxiliary member (3). The auxiliary member (3) is provided with a limiting member (34) for limiting the sliding of the control member (432), and one end of the control member (432) has a pressing portion (4321). When the control member (432) abuts against the limiting member (34), the pressing portion (4321) is located above the limiting member (34); The control member (432) has a positioning protrusion (4322), and the limiting member (34) has a plurality of positioning grooves (341) for the positioning protrusion (4322) to be inserted into. When the control member (432) and the limiting member (34) abut against each other, the positioning protrusion (4322) is inserted into the positioning groove (341), and the limiting member (34) limits the rotation of the rotating member (431). One end of the clamping member (51) passes through the connecting member (2), and the end of the clamping member (51) away from the connecting member (2) has a clamping portion (511). A through hole (4323) is passed through the control member (432). After the auxiliary member (3) and the connecting member (2) are plugged into each other, the clamping portion (511) passes through the through hole (4323). After the second driving member (52) rotates to drive the clamping member (51), the clamping portion (511) and the end face of the control member (432) facing away from the connecting member (2) abut against each other. The auxiliary component (3) is coated with an elastic sealing layer (6); when the auxiliary component (3) is plugged into the connecting component (2), the sealing layer (6) abuts against the wall of the first plugging slot (21).

2. A building heating pipe connection device according to claim 1, characterized in that: Two limiting blocks (24) for limiting the rotation of the second driving member (52) are provided on the connecting member (2). The second driving member (52) extends outward to form a limiting portion (521). The limiting portion (521) is located between the two limiting blocks (24). When the limiting portion (521) abuts against one limiting block (24), the clamping member (51) rotates until the projection of the clamping portion (511) on the control member (432) coincides with the through hole (4323); when the limiting portion (521) abuts against the other limiting block (24), the clamping member (51) rotates until the projection of the clamping portion (511) on the control member (432) is misaligned with the through hole (4323).

3. A building heating pipe connection device according to claim 1, characterized in that: The connecting member (2) comprises two assemblies (25) of identical structure. The two assemblies (25) are fixedly connected, and a plurality of sealing rings (7) are provided between the two assemblies (25).

4. A building heating pipe connection device according to claim 3, characterized in that: A plurality of temperature sensing components (8) whose volumes can change with temperature are further provided between the two assemblies (25); a plurality of first installation grooves (253) for installing the temperature sensing components (8) are provided inside the connecting component (2); and two of the first installation grooves (253) are combined to form an installation space (254) for installing the temperature sensing components (8); The installation space (254) is larger than the volume of the temperature sensing component (8), and a positioning component (9) for fixing the position of the temperature sensing component (8) in the installation space (254) is also installed in the installation space (254). The positioning component (9) includes a positioning plate (91) and a plurality of second elastic components (92). The positioning plate (91) is fixed in position after being installed in the installation space (254), and the positioning plate (91) is located on a side of the temperature sensing component (8) away from the through hole (22); A plurality of second elastic members (92) are located between the positioning plate (91) and the temperature sensing member (8), and two ends of the second elastic member (92) are fixedly connected to the positioning plate (91) and the temperature sensing member (8), respectively. The second elastic member (92) drives the temperature sensing member (8) to move toward the through hole (22), and the temperature sensing member (8) abuts against the groove wall of the first installation groove (253), and the temperature sensing member (8) divides the installation space (254) into two independent spaces (255) that are independent of each other. Four vent holes (256) are further provided inside the assembly (25), one end of the vent hole (256) is communicated with the installation space (254), and the other end of the vent hole (256) passes through the wall of the second plug-in slot (31) and is communicated with the second plug-in slot (31); If the temperature of the gas passed through the HVAC pipe (1) is lower than the outside temperature, the end of the vent hole (256) away from the second plug-in slot (31) communicates with the independent space (255) on the side of the temperature sensing element (8) away from the through hole (22); after the HVAC pipe (1) is ventilated, the volume of the connecting element (2) and the volume of the temperature sensing element (8) both shrink slightly due to temperature changes, and the degree of change in the volume of the temperature sensing element (8) is greater; the temperature sensing element (8) shrinks slightly at the end of the vent hole (256) away from the second plug-in slot (31). Under the action of the second elastic member (92), the second elastic member (92) is kept in contact with the groove wall of the first installation groove (253). During the process of thermal expansion and contraction, the volume of the independent space (255) communicating with the ventilation hole (256) after ventilation is larger than the volume of the independent space (255) communicating with the ventilation hole (256) before ventilation, so that the sealing layer (6) can be adsorbed on the groove wall of the second plug-in groove (31), thereby improving the connection strength between the auxiliary component (3) and the connecting component (2).

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