Ventilation filtering system air duct structure with non-return function

Abstract

The utility model discloses a ventilation filtering system air duct structure with a non-return function, and belongs to the technical field of ventilation filtering systems. Comprising a main body and a connecting mechanism, the main body comprises a connecting base, an adjusting box is inserted into the connecting base, sliding grooves are formed in the two sides of the adjusting box, a pair of gates is slidably installed between the pair of sliding grooves, the two opposite faces of the pair of gates abut against each other, and connecting rods are installed at one ends of the pair of gates; movable grooves are formed in the upper end and the lower end of the adjusting box, one end of the connecting rod is in sliding connection with the movable grooves, the connecting mechanism comprises a pair of connecting pipes, the connecting pipes are arranged on the two sides of a connecting base respectively, and a hot-wire type wind speed sensor is installed on one side of the upper end of the interior of one connecting pipe. The monitoring end of the hot wire type wind speed sensor faces outwards; the practicability of the air duct structure of the ventilation filtering system can be effectively improved, and the air duct structure has high practical value.

Description

Technical Field

[0001] This utility model relates to the field of ventilation and filtration system technology, specifically to a ventilation and filtration system duct structure with backflow prevention function. Background Technology

[0002] Ventilation and filtration systems play a vital role in various buildings and industrial sites, ensuring indoor air quality, regulating indoor temperature and humidity, and removing harmful gases and pollutants.

[0003] Based on the above, the inventors have discovered the following problems: Traditional duct structures usually do not have dedicated backflow prevention devices. When the ventilation system stops operating or encounters an emergency, the airflow is prone to reverse flow. The reverse airflow may damage the ventilation system's fans, filters, and other equipment, shorten the service life of the equipment, and increase maintenance costs and workload.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a ventilation filtration system duct structure with backflow prevention function, in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of this invention is to provide a ventilation filtration system duct structure with backflow prevention function to solve the problems mentioned in the background art.

[0006] By adopting the above technical solution, the backflow prevention function of the ventilation and filtration system duct is achieved, preventing airflow from flowing in the opposite direction.

[0007] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0008] A ventilation filtration system duct structure with backflow prevention function includes a main body and a connecting mechanism. The main body includes a connecting seat, on which an adjusting box is inserted. Slide grooves are formed on both sides of the adjusting box. A pair of gates are slidably installed between the slide grooves, with their two opposite faces abutting each other. A connecting rod is installed at one end of each gate. Movable slots are formed at both the upper and lower ends of the adjusting box, and one end of the connecting rod is slidably connected to the movable slot. The connecting mechanism includes a pair of connecting pipes, which are respectively located on both sides of the connecting seat. A hot-wire anemometer is installed on one side of the upper end of one of the connecting pipes, with the monitoring end of the hot-wire anemometer facing outwards.

[0009] Furthermore, movable boxes are installed on both the upper and lower sides of the inside of the regulating box, and screws are rotatably connected inside each movable box.

[0010] The advantage of adopting the above-mentioned further solution is that the connecting screw can be rotated inside the movable box, which facilitates its rotation.

[0011] Furthermore, each screw is threaded with a slider, and one side of each slider is connected to a pair of gates.

[0012] The beneficial effect of adopting the above-mentioned further solution is that by connecting the slider to the screw and making it connected to the gate, when the screw rotates, the slider can be used to drive the slidingly connected gate to move up and down.

[0013] Furthermore, a first bevel gear is fitted on each of the opposite ends of the screw, and a second bevel gear is rotatably connected inside the movable box on the side near the first bevel gear, with the first bevel gear and the second bevel gear meshing with each other.

[0014] The beneficial effect of adopting the above-mentioned further solution is that by installing the first bevel gear and making it mesh with the second bevel gear, when the second bevel gear rotates, it can drive the first bevel gear meshing with it to rotate, and cause the screw to rotate.

[0015] Furthermore, servo motors are installed at both the top and bottom ends of one side of the regulating box, and the output end of the servo motor is connected to the second bevel gear transmission.

[0016] The advantage of adopting the above-mentioned further solution is that by installing a servo motor, it drives the second bevel gear to rotate when it is working.

[0017] Furthermore, a controller is installed on the upper side of the inner side of the regulating box, and the input and output terminals of the controller are communicatively connected with the input and output terminals of the servo motor and the hot-wire anemometer.

[0018] The beneficial effect of adopting the above-mentioned further solution is that by installing a controller, it can identify and process the monitoring signal of the hot-wire anemometer. When the external airflow enters the inside of the connecting pipe and comes into contact with the hot-wire anemometer, the hot-wire anemometer sends an electrical signal to the controller. The controller drives the servo motor, thereby causing the gate to close quickly and blocking the external airflow from entering the ventilation and filtration system.

[0019] Furthermore, both opposite sides of the gate are provided with sealing strips, and the sealing strips are made of rubber.

[0020] The beneficial effect of adopting the above-mentioned further solution is that by setting sealing strips on the two opposite sides of the gate, and making them of rubber material, the sealing performance of the gate when it is closed can be improved.

[0021] The beneficial effects of this utility model are as follows: This utility model provides a ventilation filtration system duct structure with backflow prevention function through the above design. This ventilation filtration system duct structure with backflow prevention function has an adjusting box inserted into the connecting seat, with sliding grooves on both sides inside. A pair of gates are slidably installed between the sliding grooves, and the opposite surfaces of the gates abut against each other. The pair of gates can be used to close the pipe, thereby playing a backflow prevention role. By installing a connecting rod at one end of the gate, the position of the connecting rod can be adjusted to control the sliding of the gate, thereby opening or closing the pair of gates. By opening a movable groove and sliding it with the connecting rod, the connecting rod can be extended from the movable groove as the gate opens, thus not affecting the opening of the gate. By installing a connecting pipe, it is convenient to connect the connecting seat to the ventilation filtration system, so that the external airflow enters the ventilation filtration system for filtration after passing through the connecting pipe and the interior of the connecting seat. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the ventilation filtration system duct structure with backflow prevention function disclosed in an embodiment of the present invention. Figure 1 ;

[0023] Figure 2 This is a three-dimensional structural diagram of the ventilation filtration system duct structure with backflow prevention function disclosed in an embodiment of the present invention. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the ventilation filtration system with backflow prevention function disclosed in this embodiment of the utility model. Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the ventilation filtration system with backflow prevention function disclosed in this embodiment of the utility model. Figure 2 ;

[0026] Figure 5 The ventilation filtration system duct structure with backflow prevention function disclosed in this embodiment of the utility model Figure 4 An enlarged schematic diagram of the A structure.

[0027] In the diagram: 100, main body; 1001, connecting seat; 1002, regulating box; 1003, servo motor; 1004, movable groove; 1005, gate; 1006, moving box; 1007, screw; 1008, first bevel gear; 1009, second bevel gear; 1010, slider; 1011, controller; 1012, connecting rod; 1013, slide groove; 200, connecting mechanism; 2001, connecting pipe; 2002, hot-wire anemometer. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a ventilation filtration system duct structure with backflow prevention function, including a main body 100 and a connecting mechanism 200. The main body 100 includes a connecting seat 1001, on which an adjusting box 1002 is inserted. Slide grooves 1013 are provided on both sides of the adjusting box 1002. A pair of gates 1005 are slidably installed between the two slide grooves 1013, with their two opposite surfaces abutting. A connecting rod 1012 is installed at one end of each gate 1005. Movable grooves 1004 are provided at both the upper and lower ends of the adjusting box 1002, and one end of the connecting rod 1012 is slidably connected to the movable groove 1004. The connecting mechanism 200 includes a pair of connecting pipes 2001, which are respectively disposed on both sides of the connecting seat 1001. A hot-wire anemometer 2002 is installed on one side of the upper end of one of the connecting pipes 2001, with the monitoring end of the hot-wire anemometer 2002 facing outwards, passing through the connecting seat. An regulating box 1002 is inserted into 1001. Sliding grooves 1013 are opened on both sides of the box. A pair of gates 1005 are slidably installed between the sliding grooves 1013, with their opposite surfaces abutting against each other. The pair of gates 1005 can be used to seal the pipeline, thus preventing backflow. A connecting rod 1012 is installed at one end of each gate 1005. By adjusting the position of the connecting rod 1012, the gates 1005 can be slid open or closed. A movable groove 1004 is provided and slidably connected to the connecting rod 1012. As the gates 1005 open, the connecting rod 1012 extends out from the movable groove 1004 without affecting the opening of the gates 1005. A connecting pipe 2001 is installed to facilitate the connection of the connecting seat 1001 to the ventilation and filtration system, allowing external airflow to pass through the connecting pipe 2001 and the connecting seat 1001 before entering the ventilation and filtration system for filtration.

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1 - Figure 5 Inside the regulating box 1002, on both the upper and lower sides, are movable boxes 1006. Inside each movable box 1006, a screw 1007 is rotatably connected. Each screw 1007 is threaded with a slider 1010. One side of each slider 1010 is connected to a pair of gates 1005. A first bevel gear 1008 is fitted onto the opposite ends of each pair of screws 1007. Inside each movable box 1006, near the first bevel gear 1008, a second bevel gear 1009 is rotatably connected. The first bevel gear 1008 and the second bevel gear 1009 mesh with each other. Servo motors 1003 are installed at both the upper and lower ends of one side of the regulating box 1002. The output end of each servo motor 1003 is connected to the second bevel gear 1005. The gear 1009 is connected by a rotating screw 1007 inside the movable box 1006 for easy rotation. A slider 1010 is threaded onto the screw 1007 to connect it to the gate 1005. When the screw 1007 rotates, the slider 1010 drives the gate 1005 to move up and down. A first bevel gear 1008 is installed to mesh with a second bevel gear 1009. When the second bevel gear 1009 rotates, it drives the first bevel gear 1008 to rotate, and causes the screw 1007 to rotate. A servo motor 1003 is installed so that it drives the second bevel gear 1009 to rotate when it is working.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1 - Figure 5A controller 1011 is installed on the upper side of the inner side of the regulating box 1002. The input and output terminals of the controller 1011 are connected to the input and output terminals of the servo motor 1003 and the hot-wire anemometer 2002. Both opposite sides of the pair of gates 1005 are provided with sealing strips made of rubber. By installing the controller 1011, it can identify and process the monitoring signal of the hot-wire anemometer 2002. When the external airflow enters the interior of the connecting pipe 2001 and comes into contact with the hot-wire anemometer 2002, the hot-wire anemometer 2002 sends an electrical signal to the controller 1011. The controller 1011 drives the servo motor 1003, thereby causing the gates 1005 to close quickly, blocking the external airflow from entering the ventilation and filtration system. By providing sealing strips made of rubber on the two opposite sides of the gates 1005, the sealing performance of the gates 1005 when closed can be improved.

[0034] Specifically, the working principle of this ventilation filtration system duct structure with backflow prevention function is as follows: During operation, when the ventilation system is running normally and airflow flows from inside the ventilation filtration system to the connecting pipe 2001, the hot-wire anemometer 2002 cannot detect a forward airflow signal, and the controller 1011 does not drive the servo motor 1003. At this time, a pair of gates 1005 are open, and the airflow discharged from the ventilation filtration system can smoothly pass through the regulating box 1002 and be discharged outdoors. However, when the ventilation system stops operating, causing the airflow to flow in the opposite direction, the hot-wire anemometer 2002 detects the reverse airflow signal and transmits it to the controller 1011. The controller 1011... The servo motor 1003 is immediately driven to work, and the servo motor 1003 drives the second bevel gear 1009 to rotate. Since the first bevel gear 1008 and the second bevel gear 1009 mesh with each other, the first bevel gear 1008 rotates accordingly, which in turn drives the screw 1007 to rotate. The slider 1010 on the screw 1007 is connected to the gate 1005. Under the rotation of the screw 1007, the slider 1010 drives the gate 1005 to slide towards each other along the slide groove 1013. The opposing surfaces of the pair of gates 1005 are tightly fitted, thereby blocking the reverse airflow from entering the ventilation and filtration system, realizing the backflow prevention function, and protecting the ventilation and filtration system from damage by the reverse airflow.

Claims

1. A ventilation filtration system duct structure with backflow prevention function, characterized in that, The system includes a main body (100) and a connecting mechanism (200). The main body (100) includes a connecting seat (1001), on which an adjusting box (1002) is inserted. Both sides of the adjusting box (1002) have sliding grooves (1013). A pair of gates (1005) are slidably installed between the pair of sliding grooves (1013). The two opposite surfaces of the pair of gates (1005) abut against each other. A connecting rod (1012) is installed at one end of each pair of gates (1005). The regulating box (1002) has movable slots (1004) at both the upper and lower ends. One end of the connecting rod (1012) is slidably connected to the movable slot (1004). The connecting mechanism (200) includes a pair of connecting tubes (2001). The pair of connecting tubes (2001) are respectively arranged on both sides of the connecting seat (1001). A hot wire wind speed sensor (2002) is installed on one side of the upper end of one of the connecting tubes (2001). The monitoring end of the hot wire wind speed sensor (2002) faces outward.

2. The ventilation filtration system duct structure with backflow prevention function according to claim 1, characterized in that, The regulating box (1002) has movable boxes (1006) installed on both the upper and lower sides inside, and each movable box (1006) is rotatably connected to a screw (1007).

3. The ventilation filtration system duct structure with backflow prevention function according to claim 2, characterized in that, Each screw (1007) is threaded with a slider (1010), and one side of each slider (1010) is connected to a pair of gates (1005).

4. The ventilation filtration system duct structure with backflow prevention function according to claim 3, characterized in that, A first bevel gear (1008) is fitted on the opposite ends of a pair of screws (1007). A second bevel gear (1009) is rotatably connected inside the movable box (1006) on the side near the first bevel gear (1008). The first bevel gear (1008) and the second bevel gear (1009) mesh with each other.

5. The ventilation filtration system duct structure with backflow prevention function according to claim 4, characterized in that, The regulating box (1002) is equipped with servo motors (1003) at both the top and bottom ends on one side, and the output end of the servo motors (1003) is connected to the second bevel gear (1009) for transmission.

6. The ventilation filtration system duct structure with backflow prevention function according to claim 1, characterized in that, A controller (1011) is installed on the upper side of the inner side of the regulating box (1002). The input and output terminals of the controller (1011) are connected in communication with the input and output terminals of the servo motor (1003) and the hot-wire wind speed sensor (2002).

7. The ventilation filtration system duct structure with backflow prevention function according to claim 1, characterized in that, Both opposite sides of the pair of gates (1005) are provided with sealing strips, and the sealing strips are made of rubber.

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