CN209800908U - sealing connection device of heating and ventilation pipeline - Google Patents

Abstract

The utility model discloses a sealing connection device of a heating and ventilation pipeline, which comprises a connecting pipe, a connecting groove, a gas storage bin and a flange; the quantity of spread groove is two, two the spread groove symmetry is seted up inside the both sides open end of connecting pipe, the quantity of gas storage storehouse is four, four the gas storage storehouse all inlays the inside of establishing at the connecting pipe, four the gas outlet of gas storage storehouse all has the inflation head that extends to the spread groove inner wall through pipe connection, the quantity of flange is two, two flange parallel weld has the outer wall of connecting pipe, two the through-hole that four are annular and angular distribution such as just is all seted up to the inner wall of flange. The utility model discloses in, this sealing connection device adopts embedded connected mode, can connect in the warm logical pipeline embedding spread groove of both ends, can all play sealed effect to the inside and outside of pipe connection department, further improvement the sealed perfectness of warm logical pipeline connection department.

Description

A sealing connection device for heating and ventilation pipes

technical field

The utility model relates to the technical field of connection of heating and ventilation pipelines, in particular to a sealing connection device for heating and ventilation pipelines.

Background technique

The thickness and specification of the heating and ventilation pipes can be changed according to the requirements. Usually, when connecting, the two ends of the air pipe are always externally connected to the accessories. Generally, there are no grooves at both ends of the heating and ventilation pipes and there are sealing rings. The scope of application of the heating and ventilation pipes Very extensive, purification system return air duct, central air-conditioning ventilation duct, industrial air supply and exhaust ventilation duct, environmental protection system suction and exhaust duct, mine drainage gas pipe, mine rubberized cloth air duct, etc.

In the connection system of heating and ventilation pipes, the adjacent heating and ventilation pipes need to be sealed and connected. However, when the existing heating and ventilation pipes are connected, they can only provide sealing protection for the outer wall of the adjacent heating and ventilation pipes. , The lack of sealing protection measures for the inner wall of the connection of the HVAC pipeline leads to the phenomenon that the HVAC medium in the HVAC pipeline is prone to leakage. At the same time, the sealing treatment of the connection is not comprehensive and perfect, and Nantong medium leakage is also prone to occur.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a sealing connection device for heating and ventilation pipes.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a sealing connection device for heating and ventilation pipelines, including connecting pipes, connecting grooves, gas storage bins and flanges;

The number of the connecting grooves is two, and the two connecting grooves are symmetrically opened inside the open ends on both sides of the connecting pipe;

The number of the gas storage bins is four, and the four gas storage bins are all embedded in the connecting pipe;

The gas outlets of the four gas storage bins are all connected to the inflatable heads extending to the inner wall of the connecting groove through conduits, and the air inlets of the four gas storage bins are connected to the inflation tubes extending to the outside of the connecting pipe through conduits;

The number of the flanges is two, and the two flanges are welded in parallel with the outer wall of the connecting pipe;

The inner walls of the two flanges are provided with four annular through holes distributed at equal angles.

As a further description of the above technical solution:

Also includes deflector ring;

The cross-section of the guide ring is a ring structure, and the edge of the guide ring is provided with a card slot;

The guide ring is clamped and fixed with the corner protrusion on the inner wall of the connecting pipe through the clamping groove;

A deflector block with an inclined structure is welded on the outer side of the deflector ring.

As a further description of the above technical solution:

The diameter of the inner wall of the connection groove is smaller than the thickness of the pipe wall of the connection pipe, and the connection groove is opened in the pipe wall of the connection pipe and near the inner third position.

As a further description of the above technical solution:

Also includes hollow board;

The hollow plate is arranged inside the flange and outside the through hole;

An oil injection pipe communicates with the outside of the flange, and a sealing plug is embedded in the outer open end of the oil injection pipe.

As a further description of the above technical solution:

The upper end of the inner wall of the connection groove is pasted with a rubber gasket, and the thickness of the rubber gasket is 1/4 of the diameter of the inner wall of the connection groove

As a further description of the above technical solution:

The inflatable head has a two-stage structure, the outer side is an arc-shaped structure, and the inner side is a rectangular structure.

Beneficial effect

The utility model provides a sealing connection device of a heating and ventilation pipeline. Has the following beneficial effects:

(1): The sealing connection device adopts an embedded connection method, which can embed the heating and ventilation pipes at both ends into the connection groove for connection, and can seal the inner and outer sides of the pipe connection, further improving the The sealing integrity of the HVAC pipe connection.

(2): The sealing connection device uses the characteristics of thermal expansion and contraction through the rubber gasket provided, so as to conduct the heat in the heating and ventilation pipe into the rubber gasket to expand and deform, thereby closing the gap in the connection groove. The function of sealing and filling is used to avoid the phenomenon of air leakage caused by gaps in the connection groove.

(3): The sealing connection device can introduce the sealing oil body into the hollow plate and seep out through the oil injection pipe and the hollow plate provided, and protect the fastening bolts in the through hole by lubricating and sealing, preventing the through hole from The bolts inside are in contact with the outside air for a long time to cause pollution or even corrosion, which facilitates subsequent replacement and maintenance.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a sealing connection device for heating and ventilation pipes proposed by the utility model;

Fig. 2 is the local structure schematic diagram of connecting groove in the utility model;

Fig. 3 is the cross-sectional structure schematic diagram of the flange in the utility model;

Fig. 4 is the structural representation of guide ring in the utility model;

Fig. 5 is a partial structural schematic diagram of the joint between the flange and the connecting pipe in the utility model.

illustration:

1. Guide ring; 11. Guide block; 12. Card slot; 2. Connecting pipe; 21. Inflatable pipe; 3. Connecting groove; 31. Rubber gasket; 32. Inflatable head; 4. Gas storage chamber; 5 , flange; 51, through hole; 52, hollow plate; 53, oil pipe; 54, sealing plug.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

As shown in Fig. 1, Fig. 2 and Fig. 3, a sealing connection device for heating and ventilation pipelines, including a connecting pipe 2, a connecting groove 3, an air storage bin 4 and a flange 5;

The number of connecting grooves 3 is two, and the two connecting grooves 3 are symmetrically opened inside the open ends on both sides of the connecting pipe 2. The inner wall diameter of the connecting groove 3 is smaller than the wall thickness of the connecting pipe 2. In the inner third of the pipe wall and close to the inner side, it can protect the inner and outer double-sided sealing protection of the connection of the HVAC pipes at both ends, and improve the sealing integrity of the connection;

The number of gas storage bins 4 is four, and the four gas storage bins 4 are all embedded in the inside of the connecting pipe 2, and the gas outlets of the four gas storage bins 4 are all connected with an inflatable head 32 extending to the inner wall of the connecting groove 3 through a conduit. , the inflatable head 32 is a two-stage structure, the outside of which is an arc structure, and the inside is a rectangular structure. The air inlets of the four air storage bins 4 are all connected to the inflation pipe 21 extending to the outside of the connecting pipe 2 through conduits, which can be When the HVAC pipes at both ends are embedded in the deepest part of the connection groove 3, the gas is introduced into the gas storage chamber 4 through the inflatable pipe 21 at this time, so that the gas enters the inflatable head 32 to expand and deform it, and seal the gap in the connection groove 3 filling processing;

The quantity of flange 5 is two, and two flanges 5 are welded with the outer wall of connecting pipe 2 in parallel, and the inner wall of two flanges 5 is provided with four circular and equiangularly distributed through holes 51, which is convenient for flange alignment. 5 Carry out bolt fastening treatment to improve the strength of pipeline connection.

Working principle: Embed the corresponding opening ends of the HVAC pipes that need to be sealed into the connection groove 3, so that the connecting pipe 2 is sleeved on the outer wall of the joint of the two HVAC pipes. When the HVAC pipes are embedded in the connection groove 3 At the deepest point, gas is injected into the gas storage chamber 4 through the gas tube 21. At this time, the gas will enter the inflatable head 32 under force, and the inflatable head 32 will expand and become larger, thereby filling the gap in the connecting groove 3 with gas. The external fastening bolts run through the heating and ventilation pipeline and the flange 5 on the connecting pipe 2 for positioning connection, so as to ensure the connection fastening strength of the sealed connection device.

As shown in Figure 4 and Figure 5, it also includes a guide ring 1, the cross section of the guide ring 1 is a ring structure, the edge of the guide ring 1 is provided with a slot 12, and the guide ring 1 is connected to the The corner protrusions on the inner wall of the pipe 2 are clamped and fixed, and the outer side of the guide ring 1 is welded with a guide block 11 with an inclined structure. Squeeze inward to gradually increase the contact friction between the guide ring 1 and the inner wall of the connecting pipe 2. On the other hand, the guide block 11 with an inclined structure will also guide the gas or liquid to the middle position, reducing the The impact force of the gas or liquid on the joint between the connecting groove 3 and the heating and ventilation pipeline prevents the leakage of the heating and ventilation medium.

As shown in Figure 3, it also includes a hollow plate 52, the hollow plate 52 is arranged inside the flange 5 and is located outside the through hole 51, the outside of the hollow plate 52 communicates with an oil injection pipe 53, and the outer open end of the oil injection pipe 53 is embedded A sealing plug 54 is provided. When the fastening bolt penetrates through the through hole 51 to fix the flange 5, the sealing plug 54 is opened to introduce the sealing oil body into the oil injection pipe 53. At this time, the sealing oil body enters the hollow plate 52, and Seep outwards to lubricate, seal and protect the inner wall of the through hole 51, and prevent the fastening bolts from being polluted and corroded.

As shown in Figure 2, the upper end of the inner wall of the connection groove 3 is pasted with a rubber gasket 31, and the thickness of the rubber gasket 31 is 1/4 of the diameter of the inner wall of the connection groove 3, and the rubber gasket 31 is affected by the heat of the HVAC medium. Finally, the rubber gasket 31 will be expanded and deformed, thereby further sealing and filling the connection gap of the connection groove 3 to ensure that there will be no gaps in the connection groove 3 .

In the description of this specification, descriptions referring to the terms "one embodiment", "example", "specific example" and the like mean that the specific features, structures, materials and characteristics described in conjunction with the embodiment or example are included in the scope of the present invention. In at least one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (6)

1. A sealing connection device for heating and ventilation pipelines, characterized in that it comprises a connecting pipe (2), a connecting groove (3), an air storage bin (4) and a flange (5); The number of the connecting grooves (3) is two, and the two connecting grooves (3) are symmetrically set inside the open ends on both sides of the connecting pipe (2); The number of the gas storage bins (4) is four, and the four gas storage bins (4) are all embedded in the connecting pipe (2); The air outlets of the four air storage bins (4) are all connected to the inflatable heads (32) extending to the inner wall of the connecting groove (3) through conduits, and the air inlets of the four air storage bins (4) are all connected through conduits. Connected with an inflation pipe (21) extending to the outside of the connecting pipe (2); The number of the flanges (5) is two, and the two flanges (5) are welded in parallel with the outer wall of the connecting pipe (2); The inner walls of the two flanges (5) are provided with four annular through holes (51) distributed equiangularly. 2. The sealing connection device of a heating and ventilation pipeline according to claim 1, further comprising a guide ring (1); The cross-section of the guide ring (1) is an annular structure, and the edge of the guide ring (1) is provided with a card slot (12); The guide ring (1) is clamped and fixed with the corner protrusion of the inner wall of the connecting pipe (2) through the clamping groove (12); A deflector block (11) with an inclined structure is welded on the outer side of the deflector ring (1). 3. A sealing connection device for heating and ventilation pipes according to claim 1, characterized in that, the inner wall diameter of the connecting groove (3) is smaller than the wall thickness of the connecting pipe (2), and the connecting groove (3) ) is set in the pipe wall of the connecting pipe (2) and close to the inner third position. 4. The sealing connection device of a heating and ventilation pipeline according to claim 1, further comprising a hollow plate (52); The hollow plate (52) is arranged inside the flange (5) and outside the through hole (51); An oil injection pipe (53) communicates with the outer side of the hollow plate (52), and a sealing plug (54) is embedded in the outer open end of the oil injection pipe (53). 5. A sealing connection device for heating and ventilation pipes according to claim 1, characterized in that a rubber gasket (31) is pasted on the upper end of the inner wall of the connection groove (3), and the rubber gasket (31) The thickness is 1/4 of the diameter of the inner wall of the connection groove (3). 6 . The sealing connection device for heating and ventilation pipes according to claim 1 , characterized in that, the inflatable head ( 32 ) has a two-stage structure, the outer side of which is an arc-shaped structure, and the inner side is a rectangular structure. 7 .