Ventilation pipeline connecting assembly

Abstract

The utility model provides a ventilating duct connecting assembly, which relates to the technical field of ventilating ducts and comprises a connecting box, a connector mounted in the middle of the inside of the connecting box, connecting pipes mounted on two sides of the outer end of the connector, ventilating ducts arranged on two sides of the outer ends of the connecting pipes, and sealing assemblies arranged between the connecting pipes and the ventilating ducts. Air leakage between the connecting pipe and the ventilation pipeline is prevented. According to the ventilation pipeline connecting assembly, the ventilation pipeline and the inner wall of the connecting pipe can be tightly attached and fixed through the sealing assembly, the sealing performance between the ventilation pipeline and the connecting pipe can be improved, the situation that after the ventilation pipeline is used for a long time, air leakage is likely to happen is avoided, noise can be absorbed through the noise reduction assembly, and the noise reduction effect is good. The decibel generated by the noise is reduced, and the noise is isolated in the ventilation pipeline, so that a good sound insulation effect is achieved, the noise generated in the ventilation pipeline is prevented from spreading to a corridor, the influence on the work of personnel in a laboratory is avoided, and a quiet working environment can be provided.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation ducts, in particular to a ventilation duct connection component. Background Art

[0002] A ventilation duct is a duct system used for air circulation and discharge in a building. It plays a crucial role in ensuring indoor air quality, preventing pollution, and regulating indoor temperature. A ventilation system usually includes an intake (fresh air) system and an exhaust system, and some also include air treatment and purification equipment. Ventilation ducts can be classified into various types according to materials, such as metal ducts (such as iron, steel), plastic ducts (such as PVC), composite material ducts, etc. When installing ventilation ducts, connection components are used to splice and install multiple ventilation ducts together. The connection component consists of a connector and a connecting pipe.

[0003] However, there are still certain defects in the existing ventilation duct connection components during actual use. When installing ventilation ducts, one end of the ventilation duct with a fixing ring is inserted and fixed to the connecting pipe at the outer end of the connector, so that the fixing ring and the connecting pipe are mutually attached and fixed with bolts. However, this installation method can only play a role in preventing detachment. After the ventilation duct is inserted into the inner part of the connecting pipe, the ventilation duct cannot be tightly fixed to the inner wall of the connecting pipe, resulting in poor sealing between the ventilation duct and the connecting pipe. After long-term use of the ventilation duct, air leakage is likely to occur. At the same time, during the process of exhausting air by the ventilation duct, the exhaust fan generates a strong suction force inside the ventilation duct, making there be a relatively large noise inside the ventilation duct, and then generating noise in the indoor corridor, resulting in noise impact on the staff in the laboratory. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is as follows: to provide a ventilation duct connection component, which solves the problems that the existing ventilation duct cannot be tightly fixed to the inner wall of the connecting pipe, resulting in poor sealing between the ventilation duct and the connecting pipe, and the exhaust fan generates a strong suction force inside the ventilation duct, making there be a relatively large noise inside the ventilation duct, and then generating noise in the indoor corridor.

[0005] The technical problem to be solved by the utility model is achieved by adopting the following technical solutions:

[0006] A ventilation duct connection component includes: a connection box, a connector installed in the middle of the connection box, connecting pipes installed on both sides of the outer end of the connector, ventilation ducts arranged on both sides of the outer end of the connecting pipes, a sealing component arranged between the connecting pipes and the ventilation ducts for preventing air leakage between the connecting pipes and the ventilation ducts, and a noise reduction component arranged inside the ventilation ducts for reducing the transmission of noise inside the ventilation ducts to the outside.

[0007] Preferably, the sealing assembly includes: an external sealing ring disposed on the outer side of the inner part of the connecting pipe, an internal sealing ring disposed on the inner side of the external sealing ring, a magnet ring disposed at the inner end of the connecting pipe, and an iron sheet layer magnetically fixed to the magnet ring on the surface of one end of the ventilation duct.

[0008] Preferably, the noise reduction assembly includes: a sound absorption pipe installed inside the ventilation duct, a plurality of sound absorption holes circumferentially formed inside the sound absorption pipe, a sound insulation layer disposed inside the plurality of sound absorption holes, a vacuum layer disposed inside the sound insulation layer, a plurality of partition blocks installed inside the vacuum layer, and a vacuum cavity provided between the plurality of partition blocks.

[0009] Preferably, a fixing ring matching the connecting pipe is installed on one side of the top of the ventilation duct. Screw holes a are formed at the top and bottom of the outer side of the fixing ring, and screws are threadedly connected inside the screw holes a. Screw holes b are formed at the top and bottom of the outer side of the connecting pipe, and the screws penetrate through the screw holes a and extend into the screw holes b.

[0010] Preferably, a detection pipe is fixedly installed on one side of the inner top of the connection box. The top of the detection pipe penetrates through the connection box and is fixedly installed with a gas detector. A branch hose a is disposed outside the detection pipe, and a branch hose b is disposed at the bottom of the detection pipe. Pipe connectors are installed between the branch hose b and the branch hose a and the detection pipe. An audible and visual alarm is fixedly installed on one side of the gas detector, and the gas detector is connected to the audible and visual alarm through a controller.

[0011] Preferably, support rods are respectively disposed on both sides of the inner bottom of the connection box. The top of the support rod is fixedly installed with an arc-shaped support block matching the ventilation duct. Sliding grooves slidably connected to the support rods are formed on both sides of the inner bottom of the connection box.

[0012] Preferably, a support block is installed on the inner bottom of the connection box, and clamping blocks are respectively installed on both sides of the inner top of the connection box. Circular clamping grooves are formed at the top of the support block and the bottom of the clamping block.

[0013] The beneficial effects of the present utility model are:

[0014] (1) Through the sealing assembly of the present utility model, the inner walls of the ventilation duct and the connecting pipe can be closely fixed, which can increase the sealing performance between the ventilation duct and the connecting pipe, and avoid the occurrence of air leakage after the ventilation duct is used for a long time.

[0015] (2) Through the noise reduction component of the present utility model, noise can be sound-absorbed, the decibels generated by the noise can be reduced, and the noise can be isolated in the ventilation duct, thereby achieving a good sound insulation effect, preventing the noise generated inside the ventilation duct from spreading to the corridor, avoiding affecting the work of the personnel in the laboratory, and thus providing a quiet working environment. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0017] Figure 2 It is a schematic diagram of the overall cross-section of the present utility model.

[0018] Figure 3 It is a schematic diagram of the connection structure between the connector and the ventilation duct of the present utility model.

[0019] Figure 4 It is a schematic diagram of the disassembled structure between the connector and the ventilation duct of the present utility model.

[0020] Figure 5 It is a schematic diagram of the front view cross-section of the connector of the present utility model.

[0021] Figure 6 Of the present utility model Figure 2 Enlarged schematic diagram at A in

[0022] Figure 7 It is a schematic diagram of the structure of the arc-shaped supporting block of the present utility model.

[0023] Figure 8 It is a schematic diagram of the side view structure of the supporting block and the clamping block of the present utility model.

[0024] Figure 9 It is a schematic diagram of the cross-section of the ventilation duct of the present utility model.

[0025] Figures 1-9 In which: 1. Connection box; 101. Connector; 102. Connecting pipe; 103. External sealing ring; 104. Internal sealing ring; 105. Magnet ring; 2. Ventilation duct; 201. Fixed ring; 202. Screw hole a; 203. Screw; 3. Screw hole b; 4. Iron sheet layer; 5. Detection pipe; 501. Gas detector; 502. Branch hose a; 503. Branch hose b; 504. Pipe joint; 505. Sound and light alarm; 6. Support rod; 601. Arc-shaped supporting block; 602. Slide groove; 7. Support block; 8. Clamping block; 9. Circular clamping groove; 10. Sound insulation pipe; 1011. Sound absorption hole; 1012. Sound insulation layer; 1013. Vacuum layer; 1014. Partition block; 1015. Vacuum cavity. Detailed Implementation Manner

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0027] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Embodiment 1

[0029] As Figures 1-9 shown, a ventilation duct connection assembly includes: a connection box 1, a connection head 101 installed in the middle of the connection box 1, connection pipes 102 installed on both sides of the outer end of the connection head 101, ventilation ducts 2 arranged on both sides of the outer end of the connection pipes 102, a sealing assembly arranged between the connection pipes 102 and the ventilation ducts 2 for preventing air leakage between the connection pipes 102 and the ventilation ducts 2, and a noise reduction assembly arranged inside the ventilation ducts 2 for reducing the outward propagation of noise inside the ventilation ducts 2.

[0030] Among them, referring to Figures 2-6 , a fixing ring 201 that is used in cooperation with the connection pipe 102 is installed on one side of the top of the ventilation duct 2. Screw holes a202 are opened at the top and bottom of the outer side of the fixing ring 201. A screw rod 203 is threadedly connected inside the screw holes a202. Screw holes b3 are opened at the top and bottom of the outer side of the connection pipe 102, and the screw rod 203 passes through the screw holes a202 and extends into the screw holes b3.

[0031] When installing the ventilation duct 2, first install the connection box 1 on the wall of the indoor corridor. Through holes are provided on both sides of the outer end of the connection box 1. Insert the ventilation ducts 2 into the connection box 1 through the through holes respectively, and insert one end of the ventilation duct 2 into the interior of the connecting pipe 102, so that the fixing ring 201 on the ventilation duct 2 is in close contact with the connecting pipe 102. At this time, the screw hole a202 on the outer side of the fixing ring 201 just abuts and fits with the screw hole b3 on the outer side of the connecting pipe 102. Screw the screw 203 into the screw hole b3 from the screw hole a202, so that the screw 203 is fixedly connected to the screw hole a202 and the screw hole b3 by threads, thereby fixedly installing the ventilation duct 2 at the connector 101 inside the connection box 1. Since the ventilation duct 2 is installed on both sides of the outer end of the connector 101, one end of the ventilation duct 2 can be installed in the laboratory, and the other end can be installed in the clean air room and connected to the air purification equipment. An exhaust fan is installed on the pipeline of the ventilation duct 2. The exhaust fan is externally powered and connected to an external switch through an electric wire. The exhaust fan is started to work through the external switch, generating suction in the ventilation duct 2, sucking out the odorous air in the laboratory, discharging it into the ventilation duct 2 at the other end through the connector 101, and then transporting the odorous air to the air purification equipment for purification treatment, achieving the function of ventilation and air change in the laboratory.

[0032] Among them, referring to Figure 2 and Figure 7 , support rods 6 are respectively provided on both sides of the bottom end inside the connection box 1. An arc-shaped supporting block 601 matching the ventilation duct 2 is fixedly installed at the top end of the support rod 6. Sliding grooves 602 for sliding connection with the support rods 6 are provided on both sides of the bottom end inside the connection box 1.

[0033] When the ventilation duct 2 is inserted into the connection box 1 from the through hole, the arc-shaped supporting block 601 at the top end of the support rod 6 just supports the bottom end of the ventilation duct 2. At this time, fix the ventilation duct 2 and the arc-shaped supporting block 601 together with bolts. When installing the ventilation duct 2 and the connecting pipe 102, push the ventilation duct 2 towards the connecting pipe 102. After the arc-shaped supporting block 601 receives the thrust, it drives the support rod 6 to slide in the sliding groove 602 to move its position, so that the ventilation duct 2 and the connecting pipe 102 are positioned and inserted for connection, accelerating the installation speed between the ventilation duct 2 and the connecting pipe 102. When the fixing ring 201 and the connecting pipe 102 are in close contact with each other and fixedly installed through the screw 203, the ventilation duct 2 can be prevented from moving.

[0034] Among them, referring to Figure 2 , Figure 4 and Figure 6, the sealing assembly includes: an external sealing ring 103 disposed on the outer side inside the connecting pipe 102, an internal sealing ring 104 disposed inside the external sealing ring 103, a magnet ring 105 disposed at the inner end of the connecting pipe 102, and an iron sheet layer 4 disposed on the surface of one end of the ventilation duct 2 and magnetically fixed to the magnet ring 105.

[0035] When the ventilation duct 2 is inserted into the inside of the connecting pipe 102 for installation, the ventilation duct 2 will sequentially insert into the external sealing ring 103, the internal sealing ring 104, and the magnet ring 105 from the outside of the connecting pipe 102, so that the external sealing ring 103, the internal sealing ring 104, and the magnet ring 105 are sleeved on the ventilation duct 2, and the iron sheet layer 4 on the surface of the ventilation duct 2 is magnetically fixed to the magnet ring 105, which can tightly fix the ventilation duct 2 against the inner wall of the connecting pipe 102, and the external sealing ring 103 and the internal sealing ring 104 can increase the sealing performance between the ventilation duct 2 and the connecting pipe 102, avoiding the occurrence of air leakage after the ventilation duct 2 is used for a long time.

[0036] After the external sealing ring 103, the internal sealing ring 104, and the magnet ring 105 are sleeved on the ventilation duct 2, the fixing ring 201 on the ventilation duct 2 just fits together with the connecting pipe 102.

[0037] Embodiment 2

[0038] On the basis of Embodiment 1, referring to Figure 1 , Figure 2 and Figure 6 , on one side of the top end inside the connection box 1, a detection pipe 5 is fixedly installed. The top end of the detection pipe 5 penetrates through the connection box 1 and a gas detector 501 is fixedly installed. A shunt hose a502 is provided outside the detection pipe 5, and a shunt hose b503 is provided at the bottom of the detection pipe 5. Pipe joints 504 are installed between the shunt hose b503 and the shunt hose a502 and the detection pipe 5. An audible and visual alarm 505 is fixedly installed on one side of the gas detector 501, and the gas detector 501 is connected to the audible and visual alarm 505 through a controller.

[0039] During the fixed installation and use of the ventilation duct 2 and the connector 101, the tapping hose a502 and the tapping hose b503 are respectively installed on the outside and bottom of the detection pipe 5 through the pipe joint 504. Since both the tapping hose b503 and the tapping hose a502 are arranged in a "U" - shaped structure, after the tapping hose a502 and the tapping hose b503 are installed on the outside and bottom of the detection pipe 5, the pipe orifices of the tapping hose a502 and the tapping hose b503 just face the connection part between the fixing ring 201 and the connecting pipe 102. When air leakage occurs between the fixing ring 201 and the connecting pipe 102, the gas discharges upward and enters the tapping hose a502 and the tapping hose b503, and is discharged to the gas detector 501 through the detection pipe 5. The presence of odor gas can be detected through the gas detector 501. Since there is a controller between the gas detector 501 and the sound - light alarm 505 and they are connected to each other by wires, there is a signal - sending module in the gas detector 501 and a signal - receiving module in the controller. When the controller receives the information from the gas detector 501, it will activate the sound - light alarm 505 to emit an alarm sound and flashing lights, which is convenient for prompting the staff that air leakage has occurred in the ventilation duct 2 and the connector 101, and the maintenance personnel can be notified in time for inspection and maintenance to prevent the odor gas from leaking in the indoor corridor and avoid polluting the indoor air environment.

[0040] After air leakage occurs between the fixing ring 201 and the connecting pipe 102, the leaked gas is in the connection box 1, and it is easy to detect the leaked gas.

[0041] When the gas detector 501 and the sound - light alarm 505 are in use, power lines and plugs are installed on the outside of the gas detector 501 and the sound - light alarm 505, and wires are connected between the gas detector 501, the controller and the sound - light alarm 505. Insert the plug into the socket on the wall to connect the power supply, so that the gas detector 501, the controller and the sound - light alarm 505 can be powered on for work. And for the control program involved in the present utility model, those skilled in the art can all achieve it according to the same or similar principles in the prior art. This part is not the innovation of the present utility model.

[0042] Among them, the model of the gas detector 501 can be MIC - 500S, and its working principle: The gas detector 501 mainly includes a sensing electrode and a reference electrode. The sensing electrode is usually made of a semiconductor material, and this material has a selective chemical reaction to specific gases. When specific gas molecules react with the semiconductor material on the surface of the sensing electrode, the resistance value of the electrode will change. This change in the resistance value can be converted into an electrical signal, thereby reflecting the change in gas concentration.

[0043] Among them, the model of the audible and visual alarm 505 can be KM1-SG20. The working principle of the audible and visual alarm 505 is to generate sound using the piezoelectric effect. It usually contains a piezoelectric ceramic crystal inside. When an external voltage is applied to the piezoelectric crystal, the crystal generates mechanical vibration, thus emitting sound. This vibration is amplified through the resonance cavity of the buzzer. The electromagnetic buzzer generates sound using the electromagnetic effect. It contains a coil and an iron vibrating piece inside. When an alternating current passes through the coil, the coil generates a magnetic field, attracting the iron vibrating piece to vibrate. The vibration of the vibrating piece forms periodic compression fluctuations in the air, thus generating sound. And it is used integrally with the LED lamp, capable of simultaneously emitting sound and flashing light. The audible and visual alarm 505, the controller, and the gas detector 501 are mature and conventional technologies in this technical field. Moreover, this solution does not make improvements to the circuits or programs of the audible and visual alarm 505, the controller, and the gas detector 501. The circuit and signal connection methods among the audible and visual alarm 505, the controller, and the gas detector 501 also belong to common conventional technologies. Therefore, the circuit and signal connection relationships are not elaborated herein.

[0044] Among them, referring to Figure 2 and Figure 8 , a support block 7 is installed at the bottom end inside the connection box 1, and clamping blocks 8 are respectively installed on both sides at the top end inside the connection box 1. Circular card slots 9 are opened at the top of the support block 7 and the bottom of the clamping block 8.

[0045] When the pipe orifices of the tapping hose a502 and the tapping hose b503 and the connection between the fixing ring 201 and the connecting pipe 102 are opposite, the pipe body of the tapping hose a502 is clamped and fixed by being inserted into the circular card slot 9 opened at the bottom of the clamping block 8, while the pipe body of the tapping hose b503 is clamped and fixed by being inserted into the circular card slot 9 opened at the top of the support block 7, so that the tapping hose a502 and the tapping hose b503 can be fixedly placed, facilitating the tapping hose a502 and the tapping hose b503 to convey the leaked odor gas to the detection pipe 5 and the gas detector 501. Moreover, the tapping hose a502 and the tapping hose b503 are movably clamped and fixed with the circular card slot 9, which is convenient for disassembly and installation.

[0046] Embodiment 3

[0047] On the basis of Embodiment 1, referring to Figure 9 , the noise reduction component includes: a silencing pipe 10 installed inside the ventilation duct 2, a plurality of sound absorption holes 1011 circumferentially opened inside the silencing pipe 10, a sound insulation layer 1012 arranged inside the plurality of sound absorption holes 1011, a vacuum layer 1013 arranged inside the sound insulation layer 1012, a plurality of partition blocks 1014 installed inside the vacuum layer 1013, and a vacuum cavity 1015 provided between the plurality of partition blocks 1014.

[0048] When the ventilation duct 2 is in use, a silencing pipe 10 is fixedly installed inside the ventilation duct 2. When the ventilation duct 2 is exhausting air, the exhaust fan generates a strong suction force inside the ventilation duct 2, causing a buzzing sound inside the ventilation duct 2, and then generating relatively large noise that spreads to the indoor corridor. At this time, several sound-absorbing holes 1011 in the silencing pipe 10 can absorb the noise, and the sound-insulating cotton in the sound-insulating layer 1012 blocks the noise to prevent it from spreading outside the ventilation duct 2, which can reduce the decibels generated by the noise. The vacuum layer 1013 and the vacuum cavity 1015 isolate the noise inside the ventilation duct 2. When there is no propagation medium for the noise inside the ventilation duct 2, the noise cannot spread outside the ventilation duct 2, thus achieving a good sound-insulating effect, preventing the noise generated inside the ventilation duct 2 from spreading to the corridor, and avoiding affecting the work of the personnel in the laboratory, and then providing a quiet working environment.

[0049] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0050] The above has introduced in detail a ventilation duct connection component provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application. Those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A ventilation duct connection assembly, characterized in that: include: Connection box (1); A connection head (101) installed in the middle of the connection box (1); Connecting pipes (102) installed on both sides of the outer end of the connector (101); Ventilation ducts (2) arranged on both sides of the outer end of the connecting pipe (102); a sealing component disposed between the connecting pipe (102) and the ventilation duct (2), used to prevent air leakage between the connecting pipe (102) and the ventilation duct (2); A noise reduction component disposed inside the ventilation duct (2) and used to reduce the noise inside the ventilation duct (2) from being transmitted outwards; The sealing assembly comprises: An external sealing ring (103) arranged inside and outside the connecting pipe (102); An internal sealing ring (104) disposed inside the external sealing ring (103); A magnet ring (105) disposed at the inner end of the connecting tube (102); An iron sheet layer (4) disposed on the surface of one end of the ventilation duct (2) and fixed to the magnet ring (105) by magnetic attraction; The noise reduction component comprises: A silencer pipe (10) installed inside the ventilation duct (2), wherein a plurality of sound-absorbing holes (1011) are provided in the circumferential direction inside the silencer pipe (10); A sound insulation layer (1012) disposed inside the plurality of sound absorbing holes (1011); A vacuum layer (1013) disposed inside the sound insulation layer (1012); A plurality of spacers (1014) are installed inside the vacuum layer (1013), and a vacuum cavity (1015) is provided between the plurality of spacers (1014).

2. The ventilation duct connection assembly according to claim 1, characterized in that: A fixing ring (201) for use with the connecting pipe (102) is installed on one side of the top of the ventilation duct (2), and a screw hole a (202) is provided at the top and bottom ends of the outer side of the fixing ring (201), and a screw rod (203) is threadedly connected inside the screw hole a (202), and a screw hole b (3) is provided at the top and bottom ends of the outer side of the connecting pipe (102), and the screw rod (203) passes through the screw hole a (202) and extends into the inside of the screw hole b (3).

3. The ventilation duct connection assembly according to claim 1, characterized in that: A detection tube (5) is fixedly mounted on one side of the top end of the connection box (1); the top end of the detection tube (5) passes through the connection box (1) and is fixedly mounted with a gas detector (501); a branch hose a (502) is arranged on the outside of the detection tube (5); a branch hose b (503) is arranged on the bottom of the detection tube (5); pipe joints (504) are installed between the branch hose b (503) and the branch hose a (502) and the detection tube (5); an audible and visual alarm (505) is fixedly mounted on one side of the gas detector (501); and the gas detector (501) is connected to the audible and visual alarm (505) via a controller.

4. The ventilation duct connection assembly according to claim 1, characterized in that: Support rods (6) are provided on both sides of the bottom end of the connection box (1), and an arc-shaped support block (601) used in conjunction with the ventilation duct (2) is fixedly installed on the top of the support rod (6). Slide grooves (602) slidably connected to the support rod (6) are provided on both sides of the bottom end of the connection box (1).

5. The ventilation duct connection assembly according to claim 1, characterized in that: A support block (7) is installed at the bottom end of the connection box (1), clamping blocks (8) are installed on both sides of the top end of the connection box (1), and circular slots (9) are provided at the top of the support block (7) and the bottom of the clamping block (8).

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