Novel self-weight type closed fan valve

Abstract

The utility model discloses a novel self-weight type closed fan valve, which relates to the technical field of fan manufacturing and comprises an air valve barrel, a sealing flange ring is fixedly connected to the air inlet end of the air valve barrel, the air outlet end of the air valve barrel is designed in an inclined manner, and arc-shaped air doors are symmetrically arranged at the air outlet port of the air valve barrel. The upper end and the lower end of the inner circumferential side wall of the air outlet end of the air valve barrel are jointly and fixedly provided with an inclined connecting shaft, the corresponding ends of the two air doors are rotationally connected with the connecting shaft through a first round sleeve and a second round sleeve correspondingly, and the outer circumferential side wall of the air outlet end of the air valve barrel is provided with a rebound assembly used for bouncing off and separating the two valves. The two air doors can be blocked through the U-shaped plate, the sliding rod and the baffle, and the two air doors at the maximum opening angle are bounced off under the elastic action of the reset spring, so that the problems that due to internal and external factors, the risk that the air doors cannot be closed to a certain extent exists, and use limitation exists are solved, and practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan manufacturing technical field especially relates to a novel self-weight formula closed fan valve. BACKGROUND

[0002] Fan valve is the component for protecting the safety of fan and equipment, when the pressure in fan and equipment abnormally rises to a certain specified value (opening pressure of safety valve), safety valve can automatically open and discharge medium to prevent pressure from continuing to rise, when the pressure in fan and equipment reduces to a certain specified value (return-to-seat pressure of safety valve), safety valve automatically closes.

[0003] For example, the patent with the patent number CN215596500U discloses a self-weight formula closed fan valve, including the wind valve cylinder, its characterized in being that the wind valve cylinder is formed by two semicircular arc pieces, the opening / closing action is completed by wind force and the self-weight of the air door, without any other power configuration, energy saving, the setting of reducing friction force is adopted between each rotating part, and the action is light and sensitive, can meet the exhaust system engineering of different size power fan, the structure is stable and reliable, and the service life is long, but the patent has the risk of not being able to close to a certain extent when the air door is lifted to the maximum opening angle due to the lack of a rebound mechanism, thereby having use limitations. Therefore, the technical personnel in the art provide a novel self-weight formula closed fan valve closed type kitchen waste treatment device to solve the problems in the above background art. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model provides a novel self-weight formula closed fan valve, which solves the problem of the risk of not being able to close to a certain extent when the air door is lifted to the maximum opening angle due to the lack of a rebound mechanism, thereby having use limitations.

[0005] To achieve the above purpose, the utility model is realized by the following technical scheme: a novel self-weight formula closed fan valve, including the wind valve cylinder, the air inlet end of the wind valve cylinder is fixedly connected with a sealing flange ring, the air outlet end of the wind valve cylinder is designed in an inclined manner, and the air outlet port of the wind valve cylinder is symmetrically provided with air doors in a circular arc shape, the upper and lower ends of the inner circumferential side wall of the air outlet end of the wind valve cylinder are fixedly installed with connecting shafts in an inclined manner, one end of each of the two air doors is rotatably connected with the connecting shafts through a circular sleeve one and a circular sleeve two respectively, and a rebound assembly for rebounding and separating the two air doors is arranged on the outer circumferential side wall of the air outlet end of the wind valve cylinder.

[0006] As a further technical scheme of the utility model, the rebound assembly includes the U-shaped plate arranged at the center position of the outer peripheral side wall of the air outlet end of the air valve cylinder in an inclined manner, the two ends of the U-shaped plate are respectively abutted on the upper and lower ends of the outer peripheral side wall of the air valve cylinder, and round holes are formed in the outer side walls of the two sides of the U-shaped plate.

[0007] As a further technical scheme of the utility model, the rebound assembly includes the U-shaped plate arranged at the center position of the outer peripheral side wall of the air outlet end of the air valve cylinder in an inclined manner, the two ends of the U-shaped plate are respectively abutted on the upper and lower ends of the outer peripheral side wall of the air valve cylinder, and round holes are formed in the outer side walls of the two sides of the U-shaped plate.

[0008] As a further technical scheme of the utility model, the rebound assembly includes the U-shaped plate arranged at the center position of the outer peripheral side wall of the air outlet end of the air valve cylinder in an inclined manner, the two ends of the U-shaped plate are respectively abutted on the upper and lower ends of the outer peripheral side wall of the air valve cylinder, and round holes are formed in the outer side walls of the two sides of the U-shaped plate.

[0009] As a further technical scheme of the utility model, the rebound assembly includes the U-shaped plate arranged at the center position of the outer peripheral side wall of the air outlet end of the air valve cylinder in an inclined manner, the two ends of the U-shaped plate are respectively abutted on the upper and lower ends of the outer peripheral side wall of the air valve cylinder, and round holes are formed in the outer side walls of the two sides of the U-shaped plate.

[0010] As a further technical scheme of the utility model, the rebound assembly includes the U-shaped plate arranged at the center position of the outer peripheral side wall of the air outlet end of the air valve cylinder in an inclined manner, the two ends of the U-shaped plate are respectively abutted on the upper and lower ends of the outer peripheral side wall of the air valve cylinder, and round holes are formed in the outer side walls of the two sides of the U-shaped plate.

[0011] The utility model provides a novel self-weight type closed fan valve, and has the following beneficial effects compared with the prior art:

[0012] 1. The novel self-weight type closed fan valve has the advantages that the U-shaped plate, the slide rod and the baffle can block the two dampers, the two slide rods are driven to slide in the round holes under the elastic action of the return spring, the two dampers at the maximum opening angle are opened, the risk of being unable to be closed to some extent due to internal and external factors is avoided, the use limitation problem is solved, and the practicability is improved.

[0013] 2. The novel self-weight type closed fan valve has the advantages that the groove and the sealing arc strip can not only block the two dampers, but also can strengthen the sealing performance between the damper and the air valve cylinder, and the practicability is further improved. DRAWINGS

[0014] Fig. 1 It is a perspective structural schematic view of the novel self-weight type closed fan valve.

[0015] Fig. 2 It is a sectional perspective structural schematic view of the novel self-weight type closed fan valve.

[0016] Fig. 3 Figure is a new self-weight type closed fan valve overall structure exploded view.

[0017] Figure:

[0018] 1, the wind valve cylinder; 101, sealing flange ring; 102, air door; 103, connecting shaft; 104, round sleeve one; 105, round sleeve two;

[0019] 2, rebound assembly; 201, U-shaped plate; 202, round hole; 203, slide bar; 204, reset spring; 205, baffle; 206, threaded hole one; 207, threaded hole two;

[0020] 3, groove; 301, sealing arc strip;

[0021] 4, reinforcing rib. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figs. 1-3The utility model provides a novel self-weight formula closed fan valve technical scheme: including the air valve cylinder 1, the air valve cylinder 1's air inlet end fixedly connected with the sealing flange ring 101, the air outlet end of air valve cylinder 1 is designed in the inclined type, and the air outlet port of air valve cylinder 1 is symmetrically equipped with the air door 102 of arc shape, the upper and lower ends of the inner peripheral side wall of the air outlet end of air valve cylinder 1 are fixedly installed with the inclined continuous axle 103 in common, and one end of two air doors 102 is rotatably connected with the continuous axle 103 through round sleeve no. 1 104 and round sleeve no. 2 105 respectively, the outer peripheral side wall of the air outlet end of air valve cylinder 1 is provided with the rebound assembly 2 for the elastic separation of two valves, the rebound assembly 2 includes the inclined U-shaped plate 201 at the center position of the outer peripheral side wall of the air outlet end of air valve cylinder 1, the two ends of U-shaped plate 201 are respectively abutted on the upper and lower ends of the outer peripheral side wall of air valve cylinder 1, the outer side wall of the two sides of U-shaped plate 201 is all equipped with the round hole 202, the inside of two round holes 202 is all slidably connected with the slide bar 203, one end of two slide bars 203 is fixedly connected with the inner bottom surface of round hole 202 through reset spring 204, the other end of two slide bars 203 extends to the outside of round hole 202 and is fixedly installed with the baffle 205, the upper and lower ends of the outer peripheral side wall of the air outlet end of air valve cylinder 1 are all equipped with the threaded hole no. 1 206, the upper and lower ends of the outside of U-shaped plate 201 are all equipped with the threaded hole no. 2 207 of the through type, and the inside of two threaded hole no. 2 207 and threaded hole no. 1 206 is fixedly connected with each other through the locating screw. First, the air valve cylinder 1 is fixed on the fan equipment through the sealing flange ring 101, then the U-shaped plate 201 is fixed on the air valve cylinder 1 by screwing the locating screw, which is convenient for maintenance and replacement in the later period, then when the fan equipment starts, the wind pressure changes from zero to large, when the wind pressure is greater than the gravity of the air door 102 along the air outlet direction, the air door 102 is pushed up along the continuous axle 103 and moves close to each other until the maximum opening angle, and in the process of gradually opening the air door 102 to the maximum angle, two air doors 102 extrude two baffles 205 to make them push the slide bar 203 to slide in the round hole 202 to compress the reset spring 204, and at the same time, when the fan is shut down, the wind pressure is gradually reduced, the reset spring 204 gradually rebounds to make the baffle 205 push two air doors 102 away from each other, and under the action of self-weight, it is closed, thereby avoiding the risk of not being able to close to a certain extent due to internal and external factors, and the problem of use limitation is avoided, thereby improving the practicability.

[0024] The outer surface of the air outlet end of the air valve cylinder 1 is symmetrically provided with a circular arc-shaped groove 3, and the outer side wall of the two air doors 102 is fixedly provided with a sealing arc 301 matched with the groove 3, and the two sealing arcs 301 are respectively abutted on the inner side of the two grooves 3. The two air doors 102 are received by the groove 3, so that the air door 102 can be opened and closed, and the sealing property between the air door 102 and the air valve cylinder 1 is improved under the action of the sealing arc 301, so that dust and other impurities are prevented from entering the fan equipment along the air valve cylinder 1 when the air door 102 is closed, the use of the fan equipment is affected, and the practicability is further improved.

[0025] The outer side wall of the two air doors 102 is fixedly provided with a reinforcing rib 4. The self-gravity of the two air doors 102 is increased by the reinforcing rib 4, so that the two air doors 102 can be closed immediately.

[0026] The working principle of the utility model is as follows: when in use, the air valve cylinder 1 is fixed on the fan equipment through the sealing flange ring 101, and then the U-shaped plate 201 is fixed on the air valve cylinder 1 by rotating the positioning screw.

[0027] When the fan equipment is started, the wind pressure increases from zero, and when the wind pressure is greater than the gravity of the air door 102 in the air outlet direction, the air door 102 is lifted and pushed along the connecting shaft 103 and moves towards the direction of the baffle 205, and when the air door 102 is gradually opened to the maximum angle, the two air doors 102 press the two baffles 205 to drive the slide rod 203 to slide in the circular hole 202 to compress the return spring 204, and the opening and closing action is completed.

[0028] At the same time, when the fan is stopped, the wind pressure decreases, the two return springs 204 gradually rebound, the baffle 205 drives the two air doors 102 to move away from each other, and under the action of the self-gravity, the two air doors 102 are re-closed.

[0029] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should be regarded as the protection range of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model are implemented according to the conventional means in the field without special description and limitation.

Claims

1. A new and improved self-weighted closed fan valve characterized by, The utility model provides a wind valve barrel (1) is provided with the sealing flange ring (101) fixedly connected with the air inlet end of wind valve barrel (1), and the air outlet end of wind valve barrel (1) is designed in an inclined manner, and the air outlet port of wind valve barrel (1) is symmetrically provided with the air door (102) of circular arc shape, and the upper and lower ends of the inner circumferential side wall of the air outlet end of wind valve barrel (1) are fixedly installed with the connecting shaft (103) of inclined shape, and the air door (102) corresponding one end is rotatably connected with the connecting shaft (103) through the round sleeve one (104) and the round sleeve two (105) respectively, and the outer circumferential side wall of the air outlet end of wind valve barrel (1) is provided with the rebound assembly (2) for opening and separating two valves.

2. A new self-weighted closed fan valve according to claim 1, characterized in that, The rebound assembly (2) includes an inclined U-shaped plate (201) arranged at the center of the outer circumferential side wall of the air outlet end of the wind valve barrel (1), the two ends of the U-shaped plate (201) are abutted on the upper and lower ends of the outer circumferential side wall of the wind valve barrel (1), and the outer side walls of the two sides of the U-shaped plate (201) are provided with circular holes (202).

3. A new self-weighted closed fan valve according to claim 2, characterized in that, The inner part of the two circular holes (202) is slidably connected with a slide rod (203), one end of the two slide rods (203) is fixedly connected with the inner bottom surface of the circular hole (202) through a return spring (204), and the other end of the two slide rods (203) extends to the outside of the circular hole (202) and is fixedly installed with a baffle (205).

4. A new self-weighted closed fan valve according to claim 2, characterized in that, The upper and lower ends of the outer circumferential side wall of the air outlet end of the wind valve barrel (1) are provided with threaded holes one (206), the upper and lower ends of the outer part of the U-shaped plate (201) are provided with through threaded holes two (207), and the inner sides of the two threaded holes two (207) and threaded holes one (206) are fixedly connected with each other through positioning screws.

5. A new self-weighted closed fan valve according to claim 1, characterized in that, The outer surface of the air outlet end of the wind valve barrel (1) is symmetrically provided with recesses (3) of circular arc shape, the outer side walls of the two air doors (102) and the opposite ends are fixedly installed with sealing arc strips (301) matched with the recesses (3), and the two sealing arc strips (301) are abutted on the inner sides of the two recesses (3) respectively.

6. A new self-weighted closed fan valve according to claim 1, characterized in that, The outer side walls of the two air doors (102) are fixedly installed with reinforcing ribs (4).

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