A combined gas supply

Abstract

The utility model relates to ETFE membrane gas supply equipment technical field discloses a combined gas supply equipment, including wind box and pivot, the wind box front end symmetry has opened the air port, the wind box front end is provided with switching mechanism, the wind box front end inner wall and rear end inner wall between fixedly set up have the baffle, wind box one side fixedly set up has the motor, the switching mechanism includes the three -way box and the baffle, the baffle lower end rotationally arranged in three -way box inner bottom surface, the baffle board body middle part fixedly set up has the round axle, the round axle upper end penetrates three -way box inner top surface and reaches the upper end, the round axle upper end is hingedly provided with the locating rod. In the utility model, through adjusting the angle of baffle, realize the flexible control to the air flow direction. Under the condition that baffle is in the inclined state, limit the entry of part air, be applicable to small -scale gas supply, and after adjusting, baffle becomes vertical state, allow the air of two air ports to pass through three -way box simultaneously, effectively improve air conveying efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of ETFE membrane gas supply equipment, and in particular to a combined gas supply equipment. Background Technology

[0002] ETFE (ethylene-tetrafluoroethylene copolymer) membrane is a material with excellent corrosion resistance, lightweight, high light transmittance, and outstanding weather resistance. It is widely used in construction, solar energy, agriculture, and other fields, particularly in greenhouse coverings, sunshades, and industrial enclosures. Its high light transmittance of over 85% effectively allows sufficient sunlight to enter, benefiting crop growth and industrial processes. Simultaneously, ETFE membranes possess UV resistance, extending their service life. They are also resistant to high temperatures, ultraviolet radiation, wind, snow, and corrosion, and are not prone to aging, with a service life exceeding 20 years. Compared to traditional glass or other materials, ETFE membranes are lighter, helping to reduce structural load and allowing for more flexible designs. Their surface also has good anti-fouling and self-cleaning properties, significantly reducing maintenance costs. Air supply equipment primarily relies on air delivery devices, such as fans and blowers, to deliver external air into the ETFE membrane structure, ensuring internal air circulation. These devices can provide continuous or intermittent airflow, regulating internal airflow to maintain the air pressure within the membrane and preserve its shape.

[0003] Existing air supply equipment typically uses one or more air delivery units for air transport. A single air delivery unit is inefficient; when supplying air to large-scale ETFE membranes, the air pressure in some areas may be too high or too low, affecting the shape and stability of the ETFE membrane structure. While multiple air delivery units can improve overall delivery efficiency, excessive airflow can lead to excessively high internal pressure when supplying air to small-scale ETFE membranes, thus affecting the membrane's shape and structure. These air supply systems are poorly adaptable to different sizes of ETFE membranes, often requiring users to transport and use different types of air supply equipment to handle varying membrane sizes.

[0004] Therefore, those skilled in the art have provided a combined gas supply device to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a combined air supply device that allows for flexible control of airflow direction by adjusting the angle of the baffle. When the baffle is tilted, it restricts some air intake, making it suitable for small-scale air supply. When adjusted, the baffle becomes vertical, allowing air from both vents to pass through the three-way box simultaneously, effectively improving air delivery efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a combined air supply device, including a bellows and a rotating shaft, wherein air outlets are symmetrically opened at the front end of the bellows, a switching mechanism is provided at the front end of the bellows, a partition is fixedly provided between the inner wall of the front end and the inner wall of the rear end of the bellows, and a motor is fixedly provided on one side of the bellows.

[0007] The switching mechanism includes a three-way box and a baffle. The lower end of the baffle is rotatably mounted on the bottom surface inside the three-way box. A round shaft is fixedly mounted in the middle of the baffle. The upper end of the round shaft passes through the top surface inside the three-way box and extends to the upper end. A positioning rod is hinged to the upper end of the round shaft. An arc-shaped plate is fixedly mounted on the upper end of the three-way box near the positioning rod. Three snap fasteners arranged in a fan shape are fixedly mounted on the upper end of the arc-shaped plate.

[0008] Furthermore, the two rear ends of the three-way box are respectively fixed on two air vents, and the positioning rod is engaged in the buckle.

[0009] Furthermore, a flexible telescopic hose is fixedly installed at the front end of the three-way box, and a connector is provided at the end of the flexible telescopic hose away from the three-way box.

[0010] Furthermore, a bearing is fixedly sleeved in the middle of the shaft body, and the middle of the shaft body is through the bearing and is disposed in the middle of the partition.

[0011] Furthermore, one end of the rotating shaft passes through the inner wall of one side of the air box and is fixedly mounted on the motor output end, while the other end of the rotating shaft is rotatably mounted on the inner wall of the other side of the air box.

[0012] Furthermore, two symmetrically distributed fan blades are fixedly sleeved on the shaft body.

[0013] Furthermore, the rear end of the bellows is symmetrically provided with multiple air inlets.

[0014] This utility model has the following beneficial effects:

[0015] This invention proposes a combined air supply device that controls airflow direction by adjusting the angle of a baffle. In its unadjusted state, the baffle is tilted, restricting some air intake and reducing air delivery efficiency, making it suitable for small-scale applications. After adjustment, the baffle becomes vertical, allowing air from both vents to simultaneously enter the three-way box and then be delivered to the ETFE membrane via a flexible hose, thereby improving air delivery efficiency. This design enables the air supply device to switch between different operating states, adapting to the air supply needs of membrane surfaces of varying sizes, and solving the problem that traditional air supply devices cannot simultaneously adapt to ETFE membranes of different sizes. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the bellows of this utility model;

[0018] Figure 3 This is an isometric view of the exploded structure of this utility model;

[0019] Figure 4 This is a side-view axonometric schematic diagram of the present invention;

[0020] Figure 5 This is a top sectional view of the present invention;

[0021] Figure 6 For the present utility model Figure 1 Enlarged diagram of point A.

[0022] Legend:

[0023] 1. Air box; 2. Switching mechanism; 3. Air outlet; 4. Motor; 5. Shaft; 6. Bearing; 7. Fan blade; 8. Telescopic hose; 9. Air inlet; 10. Partition; 201. T-junction box; 202. Baffle; 203. Round shaft; 204. Positioning rod; 205. Arc plate; 206. Buckle. Detailed Implementation

[0024] 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.

[0025] Reference Figure 1 , Figure 2 , Figure 4 , Figure 5This utility model provides an embodiment of a combined air supply device, including a bellows 1 and a rotating shaft 5. The bellows 1 has symmetrically arranged air inlets 3 at its front end, and a switching mechanism 2 at its front end. A partition 10 is fixedly arranged between the inner wall of the front end and the inner wall of the rear end of the bellows 1. A motor 4 is fixedly arranged on one side of the bellows 1. A bearing 6 is fixedly sleeved in the middle of the shaft of the rotating shaft 5. The middle of the shaft of the rotating shaft 5 is penetrated through the middle of the partition 10 via the bearing 6. One end of the rotating shaft 5 penetrates the inner wall of one side of the bellows 1 and is fixedly arranged on the output end of the motor 4. The other end of the rotating shaft 5 is rotatably arranged on the inner wall of the other side of the bellows 1. Two symmetrically distributed fan blades 7 are fixedly sleeved on the shaft of the rotating shaft 5. Multiple air inlets 9 are symmetrically arranged at the rear end of the bellows 1. Two air inlets 3 are fixedly arranged on both sides of the rear end of a three-way box 201. A telescopic hose 8 is fixedly arranged at the front end of the three-way box 201, and a connector is provided at the end of the telescopic hose 8 away from the three-way box 201.

[0026] Specifically, the device is powered by a fixed power supply. The user connects the power supply to the device and then starts the motor 4 through the control switch. The motor 4 drives the rotating shaft 5 to rotate. The rotating shaft 5 is supported by the bearing 6 when rotating, and the bearing 6 provides a smoother rotation process for the rotating shaft 5. Secondly, the baffle 1 is divided into two independent spaces by the partition 10, and the two fan blades 7 are located in the two independent spaces respectively. When the two fan blades 7 rotate, they will push the air to the air outlet 3 respectively. Then, this air will enter the three-way box 201 from the two air outlets 3. Finally, it will enter the ETFE membrane through the telescopic hose 8. In addition, the connector set at one end of the telescopic hose 8 is the connector used in the prior art to cooperate with the pre-reserved holes on the ETFE membrane. When using it, the user installs the connector on the pre-reserved hole and then fixes the connector at the hole with special sealing accessories.

[0027] It should be noted that bearing 6 is a bearing with dustproof function, because during air supply, external dust will inevitably enter the air box 1. If this dust enters the bearing 6, it will increase the friction of the rotating shaft 5 when it rotates, thereby affecting the speed of the fan blade 7 and reducing the air delivery efficiency. Therefore, a bearing with dustproof function is used.

[0028] Multiple air inlets 9 are symmetrically opened at the rear end of the bellows 1 to facilitate ventilation and maintain smooth airflow. These air inlets 9 allow external air to enter the bellows 1, providing an air source for the fan blades 7.

[0029] Reference Figure 1 , Figure 3 , Figure 5 , Figure 6The switching mechanism 2 includes a three-way box 201 and a baffle 202. The lower end of the baffle 202 is rotatably mounted on the inner bottom surface of the three-way box 201. A round shaft 203 is fixedly mounted in the middle of the baffle 202. The upper end of the round shaft 203 passes through the inner top surface of the three-way box 201 and extends to the upper end. A positioning rod 204 is hinged to the upper end of the round shaft 203. An arc-shaped plate 205 is fixedly mounted on the upper end of the three-way box 201 near the positioning rod 204. Three fan-shaped buckles 206 are fixedly mounted on the upper end of the arc-shaped plate 205. The positioning rod 204 is engaged in the buckles 206.

[0030] Specifically, the rod of the positioning rod 204, which is hinged to the upper end of the circular shaft 203, is on the same vertical line as the body of the baffle 202. When the user rotates the circular shaft 203 through the positioning rod 204, the baffle 202 can be judged as vertical or tilted simply by observing the direction of the positioning rod 204. Secondly, the three latches 206 set on the upper end of the arc plate 205 correspond to the three states of the air supply device. In the initial state, the positioning rod 204 is latched on the latch 206 on one side of the upper end of the arc plate 205. At this time, the air supply device supplies air only. When the user latches the positioning rod 204 on the latch 206 on the other side, the air supply device still supplies air only, but the air supply channel changes from one side to the other side. When the user latches the positioning rod 204 on the latch 206 in the middle, the air supply device will become a dual-channel simultaneous air supply.

[0031] Working principle: The user connects the air supply device to the ETFE membrane through the connector on the telescopic hose 8, turns on the control switch, and the motor 4 starts working. The motor 4 drives the rotating shaft 5 to rotate, which in turn drives the two fan blades 7 to rotate. When the two fan blades 7 rotate, they push the air to the two air outlets 3 respectively. The air enters the three-way box 201 through the two air outlets 3. Then the air will gather at the baffle 202 and be transported to the ETFE membrane through the telescopic hose 8 along the baffle 202. In addition, the baffle 202 is initially tilted, which will block the air from one side of the air outlet 3 from entering the three-way box 201. Therefore, only the air from the other side of the air outlet 3 will enter the ETFE membrane through the three-way box 201, and the air delivery efficiency will be reduced.

[0032] Secondly, the user grasps the positioning rod 204 and pulls it upwards to disengage it from the latch 206. Then, the user rotates the positioning rod 204, which in turn drives the circular shaft 203 to rotate, and the circular shaft 203 in turn drives the baffle 202 to rotate. Next, when the positioning rod 204 rotates to the latch 206 located in the middle of the arc plate 205, the baffle 202 changes from its original slanted state to a vertical state. Then, the air is delivered into the ETFE membrane through the telescopic hose 8. Finally, the user presses down on the positioning rod 204 to engage it with the latch 206, thus fixing the position of the baffle 202. In addition, since the baffle 202 is vertical, it no longer blocks the air entering the three-way box 201 from either side of the air vent 3. Therefore, the air pushed by both fan blades 7 will enter the ETFE membrane through the three-way box 201, thereby enhancing the air delivery efficiency of the air supply equipment.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A combined air supply device, comprising a bellows (1) and a rotating shaft (5), characterized in that: The front end of the bellows (1) is symmetrically provided with air vents (3), the front end of the bellows (1) is provided with a switching mechanism (2), a partition (10) is fixedly provided between the inner wall of the front end and the inner wall of the rear end of the bellows (1), and a motor (4) is fixedly provided on one side of the bellows (1). The switching mechanism (2) includes a three-way box (201) and a baffle (202). The lower end of the baffle (202) is rotatably mounted on the bottom surface of the three-way box (201). A round shaft (203) is fixedly mounted in the middle of the baffle (202). The upper end of the round shaft (203) passes through the top surface of the three-way box (201) to the upper end. A positioning rod (204) is hinged to the upper end of the round shaft (203). An arc-shaped plate (205) is fixedly mounted near the positioning rod (204) at the upper end of the three-way box (201). Three fan-shaped buckles (206) are fixedly mounted on the upper end of the arc-shaped plate (205).

2. The combined gas supply device according to claim 1, characterized in that: The three-way box (201) is fixedly installed on two air vents (3) on both sides of its rear end, and the positioning rod (204) is engaged in the buckle (206).

3. The combined gas supply device according to claim 1, characterized in that: A flexible hose (8) is fixedly installed at the front end of the three-way box (201), and a connector is provided at the end of the flexible hose (8) away from the three-way box (201).

4. A combined gas supply device according to claim 1, characterized in that: The shaft (5) is fixedly fitted with a bearing (6) in the middle of the shaft body, and the shaft (5) is installed through the bearing (6) in the middle of the partition (10).

5. A combined gas supply device according to claim 1, characterized in that: One end of the rotating shaft (5) passes through the inner wall of one side of the wind box (1) and is fixedly mounted on the output end of the motor (4). The other end of the rotating shaft (5) is rotatably mounted on the inner wall of the other side of the wind box (1).

6. A combined gas supply device according to claim 1, characterized in that: Two symmetrically distributed fan blades (7) are fixedly sleeved on the shaft (5).

7. A combined gas supply device according to claim 1, characterized in that: The rear end of the bellows (1) is symmetrically provided with multiple air inlets (9).

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