Novel two-way duckbill valve

Abstract

The utility model relates to the field of fluid valves, in particular to a novel two-way duckbill valve which comprises a barrel, a first duckbill valve and a second duckbill valve are arranged on the two opposite sides of the barrel respectively, a first through groove and a second through groove are formed in the barrel, the first through groove is communicated with the first duckbill valve, and the second through groove is communicated with the second duckbill valve. The first through groove and the second through groove are the same in internal structure, a cover plate is arranged in the first through groove, covers the inlet of the first duckbill valve and is in sliding connection with the first through groove, an extension rod is arranged on the cover plate and is perpendicular to the axis of the first through groove, and the extension rod is in sliding connection with the inner wall of the barrel; the same cover plates are arranged in the first through groove and the second through groove, opening and closing of the first duckbill valve and the second duckbill valve are controlled, and the flow directions of materials on the two sides of the valve body are conveniently selected.

Description

Technical Field

[0001] The utility model relates to the field of fluid valves, in particular to a novel bidirectional duckbill valve. Background Art

[0002] A new type of bidirectional duckbill valve is disclosed in the Chinese patent with announcement number CN209943601U, including a cylinder, a first valve, a second valve and a third valve with a hollow interior are arranged on the upper part of the cylinder, the extension lines of two adjacent valves along the long side direction intersect at one point and the angle between the extension lines is 60 degrees, the first valve, the second valve and the third valve have the same structure, both sides of the first valve are provided with a first arc wall, the two adjacent first arc walls gradually approach from bottom to top and form a first incision at the end, the bottom of the first valve is provided with a liquid inlet, the cylinder is provided with a hollow air outlet valve, one end of the air outlet valve is provided with an air outlet portion, both sides of the air outlet portion are provided with a second arc wall, the two adjacent second arc walls gradually approach from bottom to top and form a second incision at the end, and the other end of the air outlet valve is provided with an air inlet. Reduce the pressure required to open the valve, effectively improve the liquid outlet speed and air intake speed. This patent sets an outlet valve facing in opposite directions on the cylinder, so that the cylinder is connected to the atmosphere through the outlet valve, maintains the air pressure balance in the cylinder, reduces the pressure required to open the valve, and effectively increases the liquid discharge speed and air intake speed. However, this patent does not set a component to control the opening and closing of the outlet valve, resulting in the inability to prevent the atmosphere from entering the cylinder through the outlet pipe when it is necessary to ensure that the liquid in the cylinder is clean.

[0003] Based on this, the utility model designs a new type of two-way duckbill valve to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of two-way duckbill valve to solve the above technical problems.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a new type of two-way duckbill valve, comprising a cylinder, a first duckbill valve and a second duckbill valve are respectively provided on opposite sides of the cylinder, a first through groove and a second through groove are opened on the cylinder, the first through groove is communicated with the first duckbill valve, the second through groove is communicated with the second duckbill valve, the first through groove and the second through groove have the same internal structure, a cover plate is provided in the first through groove, the cover plate covers the inlet of the first duckbill valve, the cover plate and the first through groove are slidably connected to each other, an extension rod is provided on the cover plate, the extension rod is arranged perpendicular to the axis of the first through groove, and the extension rod is slidably connected to the inner wall of the cylinder.

[0006] Preferably, the cover plate is arranged in a circular shape, and the extension rod is arranged on the extension line of the cover plate diameter.

[0007] Preferably, the two groups of extension rods are respectively arranged in the first through slot and the second through slot, and the two groups of extension rods are respectively connected to the two groups of cover plates arranged in the first through slot and the second through slot.

[0008] Preferably, a first guide rail is provided on the inner wall of the cylinder, a first limit rod is slidably provided in the first guide rail, and the extension rod is rotatably connected to the first limit rod.

[0009] Preferably, a second limit rod is provided on the extension rod, and a second guide rail matching the second limit rod is provided on the inner wall of the cylinder, the second guide rail is arranged parallel to the first guide rail, a third guide rail is provided in the middle of the second guide rail, the third guide rail is arranged in a circular ring shape, and the second limit rod and the third guide rail are slidably connected to each other.

[0010] Preferably, the distance between the second guide rail and the extension rod is smaller than the distance between the first guide rail and the extension rod.

[0011] Compared with the prior art, the beneficial effect of the utility model is that the utility model controls the opening and closing of the first duckbill valve and the second duckbill valve by arranging the same cover plate in the first through groove and the second through groove, so as to facilitate the selection of the material flow direction on both sides of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the first duckbill valve of the utility model;

[0015] Figure 3 This is a schematic diagram of the guide rail structure of the utility model.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1-cylinder, 11-first guide rail, 12-first limiting rod, 13-second limiting rod, 14-second guide rail, 15-third guide rail, 2-first duckbill valve, 21-first through groove, 3-second duckbill valve, 31-second through groove, 4-cover plate, 41-extension rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Combination Figure 1-3 :

[0020] A novel two-way duckbill valve comprises a cylinder 1, wherein a first duckbill valve 2 and a second duckbill valve 3 are respectively arranged on opposite sides of the cylinder 1, a first through groove 21 and a second through groove 31 are opened on the cylinder 1, the first through groove 21 is communicated with the first duckbill valve 2, the second through groove 31 is communicated with the second duckbill valve 3, the first through groove 21 and the second through groove 31 have the same internal structure, a cover plate 4 is arranged in the first through groove 21, the cover plate 4 covers the entrance of the first duckbill valve 2, the cover plate 4 and the first through groove 21 are slidably connected to each other, an extension rod 41 is arranged on the cover plate 4, the extension rod 41 is perpendicular to the axis of the first through groove 21, and the extension rod 41 is slidably connected to the inner wall of the cylinder 1.

[0021] Furthermore, the cover plate 4 is arranged in a circular shape, and the extension rod 41 is arranged on the diameter extension line of the cover plate 4 .

[0022] Furthermore, two groups of extension rods 41 are respectively disposed in the first through slot 21 and the second through slot 31 , and the two groups of extension rods 41 are respectively connected to the two groups of cover plates 4 disposed in the first through slot 21 and the second through slot 31 .

[0023] Furthermore, a first guide rail 11 is provided on the inner wall of the cylinder 1 , a first limiting rod 12 is slidably provided in the first guide rail 11 , and the extension rod 41 and the first limiting rod 12 are rotatably connected to each other.

[0024] Furthermore, a second limiting rod 13 is provided on the extension rod 41, and a second guide rail 14 matching the second limiting rod 13 is provided on the inner wall of the cylinder 1. The second guide rail 14 is arranged parallel to the first guide rail 11, and a third guide rail 15 is provided in the middle of the second guide rail 14. The third guide rail 15 is arranged in a circular ring shape, and the second limiting rod 13 and the third guide rail 15 are slidably connected to each other.

[0025] Furthermore, the distance between the second guide rail 14 and the extension rod 41 is smaller than the distance between the first guide rail 11 and the extension rod 41 .

[0026] Specific application examples of the utility model:

[0027] The first duckbill valve 2 and the second duckbill valve 3 are arranged opposite to each other on both sides of the cylinder 1, and the two sets of duckbill valves are used to control the gas-liquid flow on both sides of the cylinder 1. The cover plate 4 is slidably arranged in the first through groove 21, and the cover plate 4 covers the opening ends of the first duckbill groove and the second duckbill groove. The cover plate 4 is driven to move in the first through groove 21 and the second through groove 31 by the extension rod 41 to control whether the cover plate 4 covers the opening end of the duckbill valve, thereby controlling the switch of the duckbill valve. When necessary, the duckbill valve for air to enter the cylinder 1 can be closed to prevent the atmosphere from carrying impurities into the cylinder 1.

[0028] The two groups of extension rods 41 are respectively connected to the two groups of cover plates 4, so as to control the switches of the two groups of duckbill valves. When the cover plate 4 is located in the middle of the through slot, the duckbill valves are simultaneously in an open state. At this time, the extension rods 41 are rotated to drive the cover plate 4 to rotate until the opening ends of the duckbill valves are perpendicular to each other, which is conducive to the passage of gas or liquid through the through slot.

[0029] The moving path of the extension rod 41 is limited by the mutual sliding connection between the first limit rod 12 and the first guide rail 11. The extension rod 41 and the first limit rod 12 are connected in rotation with each other to prevent the first limit rod 12 from hindering the rotation of the extension rod 41. The second limit rod 13 is connected in a sliding manner with the third guide rail 15 in an annular shape, which is conducive to limiting the rotation position of the extension rod 41 and ensuring that the extension rod 41 can only rotate when it moves to the middle of the through groove. Avoid obstruction when the cover plate 4 rotates. The second guide rail 14 and the third guide rail 15 are interconnected, and the second limit rod 13 is allowed to move horizontally when the cover plate 4 rotates to a horizontal state. The distance between the first guide rail 11 and the extension rod 41 is greater than the distance between the second guide rail 14, which is conducive to preventing the second limit rod 13 from colliding with the first limit rod 12 when rotating.

[0030] In the description of the utility model, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0031] In the utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0032] Although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A novel bidirectional duckbill valve, comprising a cylinder (1), characterized in that: A first duckbill valve (2) and a second duckbill valve (3) are respectively provided on opposite sides of the cylinder (1); a first through groove (21) and a second through groove (31) are provided on the cylinder (1); the first through groove (21) and the first duckbill valve (2) are communicated with each other; the second through groove (31) and the second duckbill valve (3) are communicated with each other; the first through groove (21) and the second through groove (31) have the same internal structure; a cover plate (4) is provided in the first through groove (21); the cover plate (4) covers the inlet of the first duckbill valve (2); the cover plate (4) and the first through groove (21) are slidably connected to each other; an extension rod (41) is provided on the cover plate (4); the extension rod (41) is arranged perpendicular to the axis of the first through groove (21); the extension rod (41) and the inner wall of the cylinder (1) are slidably connected to each other.

2. A novel bidirectional duckbill valve according to claim 1, characterized in that: The cover plate (4) is arranged in a circular shape, and the extension rod (41) is arranged on a diameter extension line of the cover plate (4).

3. A novel bidirectional duckbill valve according to claim 1, characterized in that: The two groups of extension rods (41) are respectively arranged in the first through slot (21) and the second through slot (31), and the two groups of extension rods (41) are respectively connected to the two groups of cover plates (4) arranged in the first through slot (21) and the second through slot (31).

4. A novel bidirectional duckbill valve according to claim 1, characterized in that: A first guide rail (11) is provided on the inner wall of the cylinder (1), a first limit rod (12) is slidably provided inside the first guide rail (11), and the extension rod (41) and the first limit rod (12) are rotatably connected to each other.

5. A novel bidirectional duckbill valve according to claim 4, characterized in that: A second limiting rod (13) is provided on the extension rod (41), and a second guide rail (14) matching the second limiting rod (13) is provided on the inner wall of the cylinder (1), the second guide rail (14) being arranged parallel to the first guide rail (11), a third guide rail (15) being arranged in the middle of the second guide rail (14), the third guide rail (15) being arranged in a circular ring shape, and the second limiting rod (13) and the third guide rail (15) being slidably connected to each other.

6. A novel bidirectional duckbill valve according to claim 5, characterized in that: The distance between the second guide rail (14) and the extension rod (41) is smaller than the distance between the first guide rail (11) and the extension rod (41).

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