A high-precision integrated tuyere one-way valve convenient to install

Abstract

The utility model discloses a high accuracy integrated air port check valve convenient to installation relates to air port check valve technical field, including fixed frame, the front side fixed mounting of fixed frame has the valve body, the upper and lower both sides of fixed frame all are fixedly installed and have the fixed seat, the side of fixed seat away from fixed frame all is provided with the limit plate, and the limit plate one end integrative forming is provided with the baffle, all is seted up in the fixed seat and has the sliding slot, and the baffle is slidably matched with the sliding slot, the both sides of fixed seat all are fixedly installed and have the connecting barrel, and the inside sliding installation of connecting barrel has the slide, and the one end of slide is fixedly connected with the limit plate, and the other end fixed mounting of slide has the pull ring. Loosen the pull ring after placing the valve body into the air port, and the limit plate is pushed by reset spring and is closely abutted with the inner wall of air port, and the baffle closes the installation gap along with the motion. The design realizes quick installation through the adjustable stroke of limit plate, and can be self -adaptation different internal height's air port size, and effectively promotes construction efficiency and engineering adaptability.

Description

Technical Field

[0001] This utility model relates to the field of air outlet check valve technology, and in particular to a high-precision integrated air outlet check valve that is easy to install. Background Technology

[0002] One-way valves at air vents are key components of ventilation systems. Like a one-way damper, they allow airflow in only one direction. Their primary function is to prevent backflow of outdoor air when the fan stops, effectively preventing dust, odors, and hot or cold air from entering the room, thus ensuring space cleanliness and energy efficiency. They also maintain pressure balance in specific areas, preventing cross-contamination between different functional zones. Commonly found in building exhaust ducts, kitchen and bathroom ventilation systems, and industrial plants, they ensure the system operates efficiently and reliably as designed.

[0003] Existing one-way valves for air vents have shortcomings in practical applications. Their structures are mostly split-type designs, requiring installers to complete two separate processes: fixing the frame and assembling the valve plate. This not only increases installation difficulty and labor costs but also easily leads to sealing problems due to the high precision requirements for alignment. Furthermore, existing products generally lack dimensional adaptability; each valve body can only match ventilation ducts of a specific height. When there are construction errors in the pre-reserved air vent dimensions or modifications are needed, it is impossible to adjust the valve body to adapt to different height requirements, and there is a lack of effective compensation mechanisms. This forces engineers to select new models or have them custom-made, severely restricting construction efficiency.

[0004] To address the aforementioned issues, this invention proposes a high-precision integrated air vent check valve that is easy to install. Utility Model Content

[0005] To address the problems existing in the background technology, this utility model proposes a high-precision integrated air outlet check valve that is easy to install.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-precision integrated one-way valve for easy installation, comprising a fixed frame, a valve body fixedly mounted on the front side of the fixed frame, fixed seats fixedly mounted on both the upper and lower sides of the fixed frame, a limit plate provided on the side of the fixed seat away from the fixed frame, a baffle integrally formed at one end of the limit plate, and a sliding groove provided on each fixed seat, with the baffle slidingly engaging with the sliding groove; connecting cylinders fixedly mounted on both sides of the fixed seat, a sliding rod slidably mounted inside the connecting cylinder, one end of the sliding rod being fixedly connected to the limit plate, and a pull ring fixedly mounted on the other end of the sliding rod; an elastic element provided between the connecting cylinder and the sliding rod.

[0007] The present invention is further configured such that the elastic element includes a fixed ring and a return spring, the fixed ring is fixedly installed on the outer wall of the slide rod, the return spring is sleeved on the outer side of the slide rod, one end of the return spring is fixedly connected to the connecting cylinder, and the other end of the return spring is fixedly connected to the fixed ring.

[0008] The present invention is further configured such that each of the fixed seats has a limiting groove, a limiting post is slidably installed in the limiting groove, and one end of the limiting post is fixedly connected to the bottom side of the baffle.

[0009] The present invention is further configured such that the top end of the connecting cylinder is located on the same plane as the upper end surface of the fixing seat, and the bottom end of the connecting cylinder extends into the interior of the fixing frame.

[0010] The present invention is further configured such that the valve body is provided with a plurality of ventilation slots, and a rotating shaft is rotatably installed at the top of each ventilation slot. A baffle plate is fixedly installed on the bottom side of each rotating shaft. A slot is provided on the bottom side of the baffle plate, and the slot is transitionally fitted with the bottom side of the ventilation slot.

[0011] The present invention is further configured such that rotating grooves are provided on both sides of the top of the ventilation groove, the end of the rotating shaft is rotatably connected to the rotating groove, and a torsion spring is fixedly installed inside the rotating groove, the other end of the torsion spring is fixedly connected to the rotating shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This easy-to-install, high-precision, integrated one-way vent valve consists of a fixed frame, valve body, mounting base with sliding groove, limiting plate, baffle, connecting cylinder, sliding rod, pull ring, and return spring. Squeezing the pull ring retracts the sliding rod, disengaging the limiting plate. After inserting the valve body into the vent, releasing the pull ring causes the return spring to push the limiting plate tightly against the inner wall of the vent, while the baffle simultaneously seals the installation gap. The adjustable stroke of the limiting plate enables rapid installation and adapts to vent sizes with varying internal heights, effectively improving construction efficiency and project adaptability. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the fixed frame of this utility model; Figure 3 This is a schematic diagram of the limiting groove structure of this utility model; Figure 4 This is a partial cross-sectional view of the present invention. Figure 5 This utility model Figure 4 Enlarged diagram of point A in the middle.

[0014] Reference numerals in the attached drawings: 1. Fixed frame; 2. Valve body; 3. Fixed seat; 4. Limiting plate; 5. Baffle; 6. Sliding groove; 7. Connecting cylinder; 8. Slide rod; 9. Pull ring; 10. Elastic element; 11. Fixed ring; 12. Return spring; 13. Limiting groove; 14. Limiting post; 15. Ventilation groove; 16. Rotating shaft; 17. Wind baffle; 18. Slot; 19. Rotating groove; 20. Torsion spring. Detailed Implementation

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0017] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0018] Please see Figure 1-5 This utility model provides a technical solution: a high-precision integrated one-way valve for easy installation, comprising a fixed frame 1, with a valve body 2 fixedly mounted on the front side of the fixed frame 1. Fixed seats 3 are fixedly mounted on both the upper and lower sides of the fixed frame 1. A limiting plate 4 is provided on the side of the fixed seat 3 opposite to the fixed frame 1, and a baffle 5 is integrally formed at one end of the limiting plate 4. A sliding groove 6 is provided on the fixed seat 3, and the baffle 5 slides in conjunction with the sliding groove 6. Connecting cylinders 7 are fixedly mounted on both sides of the fixed seat 3, and a sliding rod 8 is slidably mounted inside the connecting cylinder 7. One end of the sliding rod 8 is fixedly connected to the limiting plate 4, and a pull ring 9 is fixedly mounted on the other end. An elastic element 10 is provided between the connecting cylinder 7 and the sliding rod 8. The valve body 2 and the frame 1 are pre-assembled, avoiding the cumbersome process of step-by-step installation on site.

[0019] The elastic element 10 includes a retaining ring 11 and a return spring 12. The retaining ring 11 is fixedly installed on the outer wall of the slide rod 8. One end of the return spring 12, which is sleeved on the outer side of the slide rod 8, is connected to the connecting cylinder 7, and the other end is connected to the retaining ring 11. A limiting groove 13 is formed on the fixed base 3, and a limiting post 14 is slidably installed in the limiting groove 13. One end of the limiting post 14 is fixedly connected to the bottom side of the baffle 5. The top end of the connecting cylinder 7 is flush with the upper surface of the fixed base 3, and the bottom end extends into the interior of the fixed frame 1. This achieves rapid positioning and stable fixation and can adapt to ventilation openings of different heights.

[0020] The valve body 2 has several ventilation slots 15. A rotating shaft 16 is rotatably mounted at the top of each ventilation slot 15, and a baffle plate 17 is fixedly mounted on the bottom side of the rotating shaft 16. A retaining groove 18 is provided on the bottom side of the baffle plate 17, which transitionally engages with the bottom side of the ventilation slot 15. Rotating slots 19 are provided on both sides of the top of the ventilation slot 15. The end of the rotating shaft 16 is rotatably connected to the rotating slot 19, and a torsion spring 20 is fixedly mounted inside the rotating slot 19. The other end of the torsion spring 20 is fixedly connected to the rotating shaft 16. The structure of the ventilation slot 15 and the torsion spring 20 achieves unidirectional airflow control.

[0021] Working Principle: When installing this integrated air vent check valve, first align the pre-assembled device and place it inside the vent. The installer can then simultaneously squeeze the pull rings 9 located on the upper and lower sides of the device with both hands. This action will cause the slide rods 8, which are fixedly connected to the pull rings 9, to slide axially inside the connecting cylinder 7, causing the upper and lower sets of slide rods 8 to move closer together. The movement of the slide rods 8 synchronously drives the limiting plate 4, which is fixed to it, to retract towards the fixed seat 3. At this time, the return spring 12 is stretched and stores elastic potential energy. After the valve body is fully inserted into the predetermined position of the vent, the operator slowly releases the pull rings 9. The return spring 12 then releases its energy and returns to its original deformation, pushing the slide rods 8 to move in the opposite direction, ultimately causing the limiting plate 4 to form a tight mechanical contact with the upper and lower surfaces of the vent's inner wall. This achieves rapid positioning and secure fixing of the device, improving installation efficiency.

[0022] Throughout the installation process, the lateral movement of the limiting plate 4 synchronously drives the integrally formed baffle 5 to slide precisely along the sliding groove 6 on the fixed base 3. This linkage mechanism ensures that when the limiting plate 4 comes into contact with the inner wall of the vent, the baffle 5 precisely covers the assembly gap between the fixed frame 1 and the edge of the vent, effectively preventing air leakage and improving the overall aesthetics of the structure. The adjustable stroke range of the limiting plate 4 allows the device to adapt to vent sizes with different internal heights, greatly enhancing the product's applicability and installation flexibility.

[0023] After mechanical fixing is completed, the one-way valve function of the device immediately enters the working state. When the airflow flows in the correct direction, the gas pressure pushes the baffle 17 to rotate and open around the shaft 16, at which time the torsion spring 20 accumulates torque; when the airflow stops or reverses, the torsion spring 20 releases energy to drive the shaft 16 to reverse, causing the baffle 17 to quickly return to its original position. At the same time, the groove 18 on the bottom side of the baffle 17 forms a transition fit with the bottom edge of the ventilation groove 15. This double sealing mechanism ensures the absolute tightness of the valve when it is closed. Through the precise fit between the shaft 16 and the rotating groove 19, and the continuous rebound force provided by the torsion spring 20, it is ensured that the baffle 17 can only open in the preset direction, thereby reliably realizing the one-way airflow control function and effectively preventing air backflow.

[0024] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A high-precision integrated air outlet check valve that is easy to install, comprising a fixed frame (1), characterized in that: A valve body (2) is fixedly installed on the front side of the fixed frame (1). Fixed seats (3) are fixedly installed on both the upper and lower sides of the fixed frame (1). A limit plate (4) is provided on the side of the fixed seat (3) away from the fixed frame (1). A baffle (5) is integrally formed on one end of the limit plate (4). A sliding groove (6) is provided on the fixed seat (3). The baffle (5) and the sliding groove (6) are slidably engaged. A connecting cylinder (7) is fixedly installed on both sides of the fixed seat (3). A sliding rod (8) is slidably installed inside the connecting cylinder (7). One end of the sliding rod (8) is fixedly connected to the limit plate (4). A pull ring (9) is fixedly installed on the other end of the sliding rod (8). An elastic element (10) is provided between the connecting cylinder (7) and the sliding rod (8).

2. The high-precision integrated air outlet check valve that is easy to install according to claim 1, characterized in that: The elastic element (10) includes a fixing ring (11) and a return spring (12). The fixing ring (11) is fixedly installed on the outer wall of the slide rod (8). The return spring (12) is sleeved on the outer side of the slide rod (8). One end of the return spring (12) is fixedly connected to the connecting cylinder (7), and the other end of the return spring (12) is fixedly connected to the fixing ring (11).

3. The high-precision integrated air outlet check valve that is easy to install according to claim 1, characterized in that: Each of the fixed seats (3) has a limiting groove (13), and a limiting post (14) is slidably installed in the limiting groove (13). One end of the limiting post (14) is fixedly connected to the bottom side of the baffle (5).

4. The high-precision integrated air outlet check valve that is easy to install according to claim 1, characterized in that: The top end of the connecting cylinder (7) is on the same plane as the upper end face of the fixed seat (3), and the bottom end of the connecting cylinder (7) extends into the interior of the fixed frame (1).

5. A high-precision integrated air outlet check valve that is easy to install according to claim 1, characterized in that: The valve body (2) is provided with several ventilation slots (15). The top of each ventilation slot (15) is rotatably mounted with a rotating shaft (16). The bottom side of each rotating shaft (16) is fixedly mounted with a baffle plate (17). The bottom side of the baffle plate (17) is provided with a slot (18). The slot (18) is transitionally fitted with the bottom side of the ventilation slot (15).

6. A high-precision integrated air outlet check valve that is easy to install according to claim 5, characterized in that: The ventilation slot (15) has rotating slots (19) on both sides of its top end. The end of the rotating shaft (16) is rotatably connected to the rotating slot (19). Torsion springs (20) are fixedly installed inside the rotating slots (19). The other end of the torsion springs (20) is fixedly connected to the rotating shaft (16).

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