CN214618015U

CN214618015U - Square check valve

Info

Publication number: CN214618015U
Application number: CN202120647399.8U
Authority: CN
Inventors: 单昆鹏; 国斌; 于春生
Original assignee: Cooper Tianjin Technology Co Ltd
Current assignee: Cooper new energy Co.,Ltd.
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-11-05
Anticipated expiration: 2031-03-31

Abstract

The utility model provides a square check valve, which comprises a square valve body and a plurality of blades distributed up and down, wherein the adjacent blades are mutually butted, and the top of the blade and the bottom of the blade at the bottom are respectively butted with limiting plates arranged on the inner walls of upper and lower side plates of the valve body; the blade is rotatably installed in a vent hole of the valve body through rotating shafts fixed at two ends, the rotating shafts are fixed at the tops of the rear sides of the blades through fastening bolts, and the fastening bolts penetrate through the rotating shafts and the blades. The square check valve is simple in structure and convenient to disassemble and assemble.

Description

Square check valve

Technical Field

The utility model relates to a ventilation field, concretely relates to square check valve.

Background

In current ventilation system, in order to prevent ventilation equipment among the ventilation system after the stop operation, gaseous air exit through ventilation equipment pours into in the air pipe, generally can be provided with the check valve on ventilation equipment, and the check valve generally is provided with a plurality of blades, and the blade is articulated through rotation axis and valve body, and one of them blade is impaired the back, can influence the normal of whole check valve and open and close, and relatively more troublesome when repairing and changing the blade.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a square check valve to the not enough of prior art to solve the problem of proposing among the above-mentioned background art.

In order to achieve the purpose, the utility model provides a square check valve, which comprises a square valve body and a plurality of blades distributed up and down, wherein the adjacent blades are mutually butted, and the top of the blade at the top and the bottom of the blade at the bottom are respectively butted with a limiting plate arranged on the valve body; the blade is rotatably installed in a vent of the valve body through a rotating shaft, the rotating shaft is fixed to the top of the rear side of the blade through a fastening bolt, and the fastening bolt penetrates through the rotating shaft and the blade.

As a further arrangement of the present invention, the valve body is formed by bolting four C-shaped side plates to each other.

As a further arrangement of the utility model, the front end face and the rear end face of the valve body are respectively fixed with a sealing gasket.

As the utility model discloses a further setting, the blade top is equipped with the V-arrangement groove that the opening is backward, and the rotation axis is fixed at the V-arrangement inslot, and when the blade was closed, the V-arrangement groove tip butt of blade bottom rear side and adjacent blade top.

As the utility model discloses a further setting, the one side of blade bottom towards adjacent blade all is fixed with the sealing strip, the limiting plate also is provided with the sealing strip towards the one side of blade.

As the utility model discloses a further setting, be equipped with the bar regulation hole on the limiting plate, the length direction of regulation hole is unanimous with the wind direction, and adjusting bolt passes the regulation hole and fixes the limiting plate on the valve body.

As the utility model discloses a further setting, left and right side board middle part is equipped with the recess sunken to the blade direction, the rotation axis is connected through fixing the bearing frame in the recess and valve body rotation.

A square check valve that obtains through above-mentioned technical scheme, its beneficial effect is:

1. the blades are connected with the rotating shaft through fastening bolts, so that the blades are convenient to disassemble;

2. the check valve is opened and closed by wind power and self gravity, a power device is not needed, and energy is saved;

3. the arrangement of the V-shaped grooves reduces the contact area between adjacent blades, and reduces noise while ensuring the sealing performance.

Drawings

Fig. 1 is a schematic view of the forward structure of the square check valve of the present invention.

Fig. 2 is a schematic view of the reverse structure of the square check valve of the present invention.

Fig. 3 is a top view of the square check valve of the present invention.

Fig. 4 is the structure schematic diagram of limiting plate of the utility model.

Fig. 5 is a schematic structural view of the blade of the present invention.

Fig. 6 is an enlarged schematic view at a in fig. 6.

In the figure, 1, a valve body; 11. a side plate; 2. a blade; 21. a V-shaped groove; 22. a baffle plate; 3. a rotating shaft; 4. a bearing seat; 5. a limiting plate; 51. an adjustment hole; 6. fastening a bolt; 7. adjusting the bolt; 8. a sealing strip; 9. a gasket is provided.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and it is to be understood that the described embodiments are merely illustrative of some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

As shown in fig. 1-2, a square check valve, including square valve body 1 and a plurality of blade 2 that distribute from top to bottom, valve body 1 is formed by the 11 mutual bolted connections of curb plate of four C shapes, and preceding, the rear end face of valve body 1 is fixed with seal ring 9 respectively, blade 2 rotates through the fixed rotation axis 3 in both ends and installs in the vent of valve body 1, mutual butt between the adjacent blade 2, blade 2 tops and the 2 bottoms of blade 2 of below of the top respectively with install the L shape limiting plate 5 butt at the 11 inner walls of valve body 1 upper and lower curb plate.

As shown in fig. 5-6, the number of the rotating shafts 3 for driving the blades 2 to rotate is two, and the two rotating shafts are respectively located on the left side and the right side of the blades 2, one end of each rotating shaft 3, which is close to the valve body 1, is rotatably connected with a side plate 11 of the valve body 1 through a bearing seat 4, the rotating shaft is fixed at the top of the rear side of the blade 2 through a fastening bolt 6, and the fastening bolt 6 penetrates through the rotating shaft 3 and the blades 2 and is perpendicular to the rotating shaft 3.

When a certain blade 2 is damaged, the blade can be replaced only by unscrewing the fastening bolt 6 without disassembling the valve body 1, and the blade is convenient and quick.

Specifically, blade 2 top is equipped with V-arrangement groove 21 that the opening is backward, and rotation axis 3 is fixed in V-arrangement groove 21, and when blade 2 closed, blade 2 bottom rear side and the V-arrangement groove 21 pointed end butt at adjacent blade 2 top can reduce the collision area between the adjacent blade 2, noise reduction.

It should be noted here that, in order to ensure the sealing performance of the square check valve, a baffle 22 engaged with the limiting plate 5 is connected above the V-shaped groove 21 of the uppermost vane, and the baffle 22 is integrally formed with the V-shaped groove 21.

2 bottoms of blade 2 all are fixed with sealing strip 8 towards the one side of adjacent blade 2, for further improvement leakproofness, limiting plate 5 also is provided with sealing strip 8 towards the one side of blade 2.

As shown in fig. 4, the limiting plate 5 is provided with a strip-shaped adjusting hole 51, the length direction of the adjusting hole 51 is consistent with the wind direction, the adjusting bolt 7 penetrates through the adjusting hole 51 to fix the limiting plate 5 on the valve body 1, the position of the limiting plate 5 on the valve body 1 can be adjusted in the front-back direction, and then the angle of the blade 2 when the square check valve is in the closed state can be adjusted.

As shown in fig. 3, the middle parts of the left and right side plates 11 are provided with grooves recessed towards the blade direction, the bearing seat 4 is installed in the grooves, and the arrangement of the grooves can reduce the friction between the blade 2 and the side plate 11 of the valve body 1 in the rotating process.

When the ventilation equipment in the ventilation system starts, the airflow generates certain pressure to the blades 2, the blades 2 rotate along with the rotating shaft 3, when the ventilation equipment is closed, the blades 2 are automatically closed by gravity, and when the ventilation equipment is closed, under the action of the sealing strips 8, the sealing performance is improved, and meanwhile, the noise generated by collision among the blades 2 is reduced.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims

1. A square check valve comprises a square valve body (1) and a plurality of blades (2) distributed up and down, wherein adjacent blades (2) are mutually abutted, and the top of the blade (2) at the top and the bottom of the blade (2) at the bottom are respectively abutted with a limiting plate (5) arranged on the valve body (1); the method is characterized in that:

the blade (2) is rotatably installed in a vent hole of the valve body (1) through the rotating shaft (3), the rotating shaft (3) is fixed to the top of the rear side of the blade (2) through the fastening bolt (6), and the fastening bolt (6) penetrates through the rotating shaft (3) and the blade (2).

2. The square check valve according to claim 1, wherein the top of the vane (2) is provided with a V-shaped groove (21) which is opened backwards, the rotating shaft (3) is fixed in the V-shaped groove (21), and when the vane (2) is closed, the rear side of the bottom of the vane (2) is abutted with the tip of the V-shaped groove (21) at the top of the adjacent vane (2).

3. The square check valve according to claim 1, characterized in that the sealing strips (8) are fixed on the bottom of each blade (2) facing the adjacent blade (2), and the sealing strips (8) are arranged on the limiting plate (5) facing the blade (2).

4. The square check valve according to claim 1, characterized in that the limiting plate (5) is provided with a strip-shaped adjusting hole (51), the length direction of the adjusting hole (51) is consistent with the wind direction, and the adjusting bolt (7) passes through the adjusting hole (51) to fix the limiting plate (5) on the valve body (1).

5. The square check valve according to claim 1, characterized in that the valve body (1) is formed by bolting C-shaped side plates (11) to each other.

6. The square check valve according to claim 1, wherein sealing washers (9) are fixed to front and rear end surfaces of the valve body (1), respectively.

7. The square check valve according to claim 5, characterized in that the middle of the left and right side plates (11) is provided with a groove depressed towards the vane (2), and the rotating shaft (3) is rotatably connected with the valve body (1) through a bearing seat (4) fixed in the groove.