Range hood flue check valve mounting seat

Abstract

A flue check valve mounting seat of a range hood comprises a seat body, the middle of the seat body is hollowed out to form an air flue, the front face of the seat body extends outwards to form a butt joint pipe connected with a valve body, and the reverse face of the seat body faces a smoke pipe and is mounted on a smoke outlet. A rib plate is transversely arranged in the air duct, a mounting hole is formed in the middle of the rib plate, a fixing bolt penetrates through the mounting hole to be in threaded connection with a connecting nut on a pressing plate, the pressing plate penetrates through the smoke exhaust port and stretches across and is pressed on the back face of the smoke exhaust port, and the seat body and the pressing plate are clamped and mounted on the smoke exhaust port of the smoke pipe by screwing the fixing bolt and utilizing clamping force. The utility model has the beneficial effects that the connecting structure of the seat body and the pressing plate is optimally designed, so that the quick mounting and dismounting functions can be realized without complicated tools. Compared with a gluing and screw fixing mode in the prior art, the novel mounting seat adopts a simple and convenient structure such as a butterfly-shaped handle, so that the mounting time is greatly shortened, and a user can easily operate in a narrow space.

Description

Technical Field

[0001] This utility model relates to the field of kitchen and bathroom technology, specifically to a range hood flue check valve mounting base. Background Technology

[0002] Range hoods are common appliances in modern kitchens, primarily used to remove cooking fumes and exhaust gases to maintain clean kitchen air. To prevent backflow of fumes into the exhaust duct, range hoods are typically equipped with a backflow preventer. When the range hood is operating, the backflow preventer is opened by the exhaust airflow, allowing the fumes to escape smoothly. After the range hood is turned off, the backflow preventer automatically closes due to gravity or a flexible component, effectively preventing fumes from flowing back into the kitchen.

[0003] Currently, backflow preventer flues on the market are mainly fixed in two ways: adhesive bonding and screw fastening. However, both of these installation methods have many problems in actual use, seriously affecting the user's installation experience and the convenience of later maintenance.

[0004] Firstly, while adhesive-fixed backflow preventers are easy to install, their stability in actual use is poor. Due to the high temperatures in oily fume environments, the adhesive material is prone to aging and loss of adhesion over time, leading to loosening or even detachment of the backflow preventer. Furthermore, adhesive fixing is not suitable for repeated disassembly. Therefore, when cleaning or replacing the backflow preventer, users often find it difficult to remove it completely, necessitating the replacement of the adhesive material, which undoubtedly increases operating costs.

[0005] While screw-based installation offers superior stability, it also has significant drawbacks. Screw fastening requires more tools and steps, making the installation process relatively cumbersome, especially in confined kitchen spaces where it can be quite inconvenient. Furthermore, the difficulty in disassembling screw-based installations increases the complexity of maintenance work, as the backflow preventer duct of a range hood requires regular cleaning and maintenance, leading to a poor user experience. Therefore, further improvements are necessary. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a range hood flue check valve mounting base that is simple in structure, easy to use, and has a fast and stable installation method. It can ensure reliability in high-temperature oil fume environments and facilitate user disassembly and maintenance, thereby improving the overall user experience.

[0007] The purpose of this utility model is achieved through the following means: a range hood flue check valve mounting base, which includes a base body, a hollowed-out middle part of the base body to form an air duct, a connecting pipe extending outward from the front of the base body to connect with the valve body, and the back of the base body facing the flue pipe and installed on the exhaust port.

[0008] The air duct is provided with a rib plate arranged horizontally. The rib plate has a mounting hole in the middle. The fixing bolt passes through the mounting hole and is screwed to the connecting nut on the pressure plate. The pressure plate passes through the exhaust port and presses across the back of the exhaust port. The fixing bolt is tightened to clamp the seat and the pressure plate on the exhaust port of the flue.

[0009] Furthermore: the pressure plate is provided with a hinge seat, and the connecting nut is rotatably hinged to the hinge seat.

[0010] Furthermore, a clearance groove is provided on the pressure plate corresponding to the hinge seat position, and the fixing bolt extends out of the end face of the pressure plate through the clearance groove.

[0011] Furthermore, the end face of the fixing bolt is provided with a butterfly handle, which the user holds to drive the fixing bolt to rotate.

[0012] Furthermore: the pressure plate is made of metal sheet, with reinforcing plates bent forward on its two long sides, and a hinge hole is provided in the middle of the reinforcing plate, and a connecting nut is installed in the hinge hole.

[0013] Furthermore, a positioning tube is provided on the reverse side of the base, and the positioning tube is concentrically arranged with the air duct. When the base is installed, the positioning tube extends into the smoke exhaust port.

[0014] Furthermore: the seat body is provided with a concave receiving area, which is located between the outer circumference of the positioning tube and the outer contour of the seat body. The sealing gasket is installed in the receiving area and seals the gap between the seat body and the smoke tube.

[0015] Furthermore, the accommodating area is provided with several reinforcing ribs.

[0016] Furthermore, the base body has several auxiliary mounting holes extending through its main body.

[0017] Furthermore, the front of the base is also provided with a mounting slot for mounting a level and an indicator area for indicating the installation direction.

[0018] The beneficial effects of this utility model are: 1. Simple structure, low production cost, and improved market competitiveness.

[0019] This invention optimizes the connection structure between the base and the pressure plate, enabling rapid installation and disassembly without complex tools. Compared to existing adhesive and screw fixing methods, the new mounting base uses a simple structure such as a butterfly handle, significantly reducing installation time and allowing users to easily operate it even in confined spaces.

[0020] This invention employs a combination of fixing bolts and a pressure plate to securely fix the seat to the exhaust port of the flue pipe through clamping force, thus solving the problem of easy aging of adhesive fixing methods in high-temperature oil fume environments. Simultaneously, through the rational design of ribs and reinforcing plates, the overall structural strength and stability are further improved, ensuring the reliability of the check valve during long-term use.

[0021] The mounting base of this utility model, through the innovative design of the pressure plate and positioning tube, makes installation and disassembly extremely simple. Users can easily remove the check valve from the exhaust port for necessary cleaning and maintenance. Moreover, the bolts, pressure plates, and other components used are all reusable and durable parts, avoiding the problem of non-reusable adhesive materials and reducing later maintenance costs.

[0022] By adding reinforcing plates on both long sides of the pressure plate, its strength is increased, preventing connection instability caused by pressure plate deformation during use. Furthermore, reinforcing ribs within the receiving area further enhance the overall stability of the check valve mounting base, ensuring it will not loosen during prolonged use.

[0023] This invention, by installing a sealing gasket in the receiving area with a wide coverage area, ensures a tight connection between the seat and the flue, preventing oil fumes from leaking through gaps, thus improving the sealing performance of the entire oil fume emission system, effectively preventing oil fume backflow and leakage, and enhancing the hygiene level of the kitchen environment.

[0024] This invention features a mounting slot for installing a level and an indicator area for indicating the installation direction on the base, allowing users to easily calibrate and confirm the installation position, avoiding functional failures due to improper installation, and further improving the user's operating experience. Attached Figure Description

[0025] Figure 1 , 2 This is a diagram showing the final assembly and usage effect of this utility model.

[0026] Figure 3 This is a cross-sectional view of the structure of this utility model.

[0027] Figure 4 , 5 This is an exploded view of the structure of this utility model.

[0028] Figure 6This is an assembly drawing of the fixing bolts and pressure plate in this utility model. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings. A range hood flue check valve mounting base includes a base body 1, with a hollowed-out middle part of the base body 1 forming a duct 2, and a connecting pipe 11 extending outward from the front of the base body 1 to connect with the valve body, and the back of the base body 1 facing the flue pipe and mounted on the exhaust port;

[0030] The air duct 2 is provided with a rib plate 3 arranged horizontally. The rib plate 3 has a mounting hole 31 in the middle. The fixing bolt 4 passes through the mounting hole 31 and is screwed to the connecting nut 51 on the pressure plate 5. The pressure plate 5 passes through the exhaust port and presses across the back of the exhaust port. By tightening the fixing bolt 4, the seat 1 and the pressure plate 5 are clamped and installed on the exhaust port of the flue.

[0031] In one embodiment: the pressure plate 5 is provided with a hinge seat 52, and the connecting nut 51 is rotatably hinged to the hinge seat 52.

[0032] In one embodiment: a clearance groove 53 is provided on the pressure plate 5 at the position corresponding to the hinge seat 52, and the fixing bolt 4 extends out of the end face of the pressure plate 5 through the clearance groove 53.

[0033] In one embodiment: the end face of the fixing bolt 4 is provided with a butterfly handle 41, and the user holds the butterfly handle 41 to drive the fixing bolt 4 to rotate.

[0034] In one embodiment: the pressure plate 5 is made of metal sheet, with reinforcing plates 54 bent forward on its two long sides, and a hinge hole 55 is provided in the middle of the reinforcing plate 54, and a connecting nut 51 is installed in the hinge hole 55.

[0035] In one embodiment: a positioning tube 6 is provided on the reverse side of the base 1. The positioning tube 6 is concentrically arranged with the air duct 2. When the base 1 is installed, the positioning tube 6 extends into the smoke exhaust port.

[0036] In one embodiment: the seat 1 is provided with a recessed receiving area 7, the receiving area 7 is located between the outer circumference of the positioning tube 6 and the outer contour of the seat 1, and the sealing gasket 8 is installed in the receiving area 7 to seal the gap between the seat 1 and the smoke tube.

[0037] In one embodiment, the accommodating area 7 is provided with a plurality of reinforcing ribs 71.

[0038] In one embodiment, the base 1 has several auxiliary mounting holes 12 extending through its body.

[0039] In one embodiment, the front of the base 1 is also provided with a mounting groove 13 for mounting a level and an indicator area 14 for indicating the installation direction.

[0040] Working Principle: During installation: The user positions the pressure plate towards the exhaust port, allowing one end of the pressure plate to extend into the exhaust port first. Then, the pressure plate is moved radially so that the other end also smoothly enters the exhaust port, thus positioning the pressure plate across the back of the exhaust port. The base 1 is then aligned with the exhaust port of the flue, ensuring that the positioning tube 6 extends concentrically into the exhaust port. The positioning tube, once extended into the exhaust port, ensures complete communication between the air duct on the base and the exhaust port. Simultaneously, the positioning tube also serves a positioning function, preventing displacement during base installation that could obstruct the air duct.

[0041] After the connection is completed, the user can easily tighten the fixing bolt manually using the butterfly handle 41. By using the cooperation of the fixing bolt and the connecting nut 51 to tighten it, the user can clamp the base onto the flue and complete the fixation of the base and the flue. Therefore, no additional tools are required for the entire installation process.

[0042] In this case, it should be noted that the sealing gasket 8 installed in the accommodating area 7 covers the entire area between the outer circumference of the positioning tube 6 and the outer contour of the seat 1. Therefore, compared with the sealing ring, it has the advantages of large contact area and long sealing depth, ensuring that there are no gaps between the seat and the flue, thereby improving the overall sealing performance and effectively preventing the leakage and backflow of oil fumes.

[0043] When cleaning or maintenance is required, the user can loosen the butterfly handle 41 to release the fixing bolt 4, thereby loosening the pressure plate 5. Because the pressure plate is equipped with a hinge seat 52 and a clearance groove 53, it can be quickly and easily removed from the exhaust port by swinging it at a certain angle for necessary cleaning and maintenance. Furthermore, the pressure plate, fixing bolts, and other components in the assembly are reusable, reducing maintenance costs and complexity.

[0044] Furthermore, during installation, users can use the mounting slot 13 of the installation level on the base to ensure that the base is installed horizontally, while the indicator area 14 provides guidance on the installation direction to ensure accurate installation and further improve the working efficiency and reliability of the equipment.

[0045] In summary, this utility model, through optimized installation methods and structural design, achieves convenient installation and disassembly, ensures a stable and reliable connection, and has excellent sealing performance, effectively preventing backflow of oil fumes, thus greatly improving the user's ease of operation and overall experience.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A mounting base for a check valve in a range hood duct, characterized in that: It includes a base (1), the middle of the base (1) is hollowed out to form an air duct (2), the front of the base (1) extends outward with a connecting pipe (11) connected to the valve body, and the back of the base (1) faces the smoke pipe and is installed on the smoke outlet; The air duct (2) is provided with a rib plate (3) in the middle. The rib plate (3) has an installation hole (31) in the middle. The fixing bolt (4) passes through the installation hole (31) and is screwed to the connecting nut (51) on the pressure plate (5). The pressure plate (5) passes through the exhaust port and presses across the back of the exhaust port. The fixing bolt (4) is tightened to clamp the seat (1) and the pressure plate (5) on the exhaust port of the flue.

2. The mounting base for a check valve in a range hood duct according to claim 1, characterized in that: The pressure plate (5) is provided with a hinge seat (52), and the connecting nut (51) is rotatably hinged on the hinge seat (52).

3. The mounting base for a check valve in a range hood duct according to claim 2, characterized in that: The pressure plate (5) has a clearance groove (53) at the position corresponding to the hinge seat (52), and the fixing bolt (4) extends out of the end face of the pressure plate (5) through the clearance groove (53).

4. A range hood flue check valve mounting base according to claim 1 or 2, characterized in that: The end face of the fixing bolt (4) is provided with a butterfly handle (41), and the user holds the butterfly handle (41) to drive the fixing bolt (4) to rotate.

5. A range hood flue check valve mounting base according to any one of claims 1-3, characterized in that: The pressure plate (5) is made of metal sheet, with reinforcing plates (54) bent forward on its two long sides. A hinge hole (55) is provided in the middle of the reinforcing plate (54), and a connecting nut (51) is installed in the hinge hole (55).

6. The mounting base for a check valve in a range hood duct according to claim 1, characterized in that: The back of the seat (1) is provided with a positioning tube (6), which is concentrically arranged with the air duct (2). When the seat (1) is installed, the positioning tube (6) extends into the smoke exhaust port.

7. A range hood flue check valve mounting base according to claim 1, characterized in that: The seat (1) is provided with a recessed receiving area (7), which is located between the outer circumference of the positioning tube (6) and the outer contour of the seat (1). A sealing gasket (8) is installed in the receiving area (7) to seal the gap between the seat (1) and the smoke pipe.

8. A range hood flue check valve mounting base according to claim 7, characterized in that: The accommodating area (7) is provided with several reinforcing ribs (71).

9. A mounting base for a check valve in a range hood duct according to claim 1, characterized in that: The base (1) has several auxiliary mounting holes (12) extending through its main body.

10. A range hood flue check valve mounting base according to claim 1, characterized in that: The front of the base (1) is also provided with a mounting groove (13) for mounting a level and an indicator area (14) for indicating the installation direction.

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