Efficient rotary exhaust valve

Abstract

The invention relates to the field of exhaust valves of sealed packaging boxes, in particular to an efficient rotary exhaust valve. Comprising an open shell, a mounting hole is formed in the bottom of the shell, a valve element is inserted in the mounting hole of the shell, a valve element body is a hollow cylinder with the top open, two curve sliding grooves are formed in the side wall of the hollow cylinder, a plurality of exhaust holes are formed in the side wall of the lower portion of the hollow cylinder, and a boss is arranged at the bottom of the hollow cylinder; the outer side of the valve element is sleeved with a knob, a knurled pin transversely penetrates through the upper portion of the knob, a tension spring is jointly hung between the knurled pin and the inner side of the bottom of the hollow cylinder, the edge of the bottom of the knob is provided with an annular radial protrusion, the radial protrusion is installed on the inner side of the annular baffle, and the outer side of the radial protrusion is sleeved with a slotted nut; according to the invention, rapid exhaust of the sealed ammunition packaging box can be realized, the ammunition guarantee speed is accelerated, the deflation rate of the packaging box is improved, and the device has self-locking performance, is convenient to operate and simple in structure, and is suitable for exhaust of various sealed packaging boxes.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sealed packaging box exhaust valve, in particular to a high-efficiency rotary exhaust valve. BACKGROUND

[0002] The stable charging and discharging function of the sealed packaging box is necessary to ensure the sealing of the box. Generally, the sealed packaging box contains at least three valve bodies, namely, the air charging valve, the exhaust valve and the safety valve.

[0003] The previous sealed packaging box mostly uses straight insertion type exhaust valve, press type or pull type exhaust valve. The former has no good anti-lost measure, and the latter needs the user to continuously press or pull the valve body until the discharging is completed. Due to the limitation of the valve body diameter, both of them have the disadvantage of slow discharging rate, which greatly affects the ammunition support. SUMMARY

[0004] The present application provides a high-efficiency rotary exhaust valve to solve the technical problem of slow discharging rate of the current exhaust valve. The rotary knob can be rotated by 120° to quickly discharge, which is convenient to open and close, has a larger caliber, and greatly improves the discharging rate. Moreover, the high-efficiency rotary exhaust valve has a self-locking function, which automatically continues to discharge after rotation without the need for external force to maintain.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is as follows: a high-efficiency rotary exhaust valve, comprising an open shell, a mounting hole is formed in the bottom of the shell, an annular baffle is arranged at the edge of the mounting hole in the bottom of the shell, and an external thread is arranged on the outer side of the annular baffle; a valve core is inserted into the mounting hole of the shell, the main body of the valve core is a hollow cylinder with an open top, two curved sliding grooves are formed in the side wall of the hollow cylinder, a plurality of exhaust holes are formed in the lower side wall of the hollow cylinder, a boss is arranged at the bottom of the hollow cylinder, and the boss is located on the outer side of the shell; a knob is sleeved on the outer side of the valve core, a knurled pin is transversely arranged on the upper part of the knob, and the two ends of the knurled pin are fixed to the side wall of the knob after passing through the two curved sliding grooves, respectively, a tension spring is hung between the knurled pin and the inner side of the bottom of the hollow cylinder, the valve core is raised or lowered by rotating the knob under the joint action of the knurled pin and the curved sliding grooves, a radial protrusion in the form of a ring is arranged at the bottom edge of the knob, the radial protrusion is installed on the inner side of the annular baffle, a slotted nut is sleeved on the outer side of the radial protrusion, and the slotted nut is connected with the outer side thread of the annular baffle.

[0006] As a further limitation of the technical scheme of the present application, a hanging ear is arranged at the center of the inner side of the bottom of the hollow cylinder of the valve core, one end of the tension spring is hung on the hanging ear, and the other end is hung on the middle part of the knurled pin.

[0007] As a further limitation of the technical scheme of the application, an O-shaped sealing ring is arranged between the convex platform and the bottom of the shell, and the O-shaped sealing ring is sleeved outside the bottom of the hollow cylinder.

[0008] As a further limitation of the technical scheme of the application, three exhaust holes are arranged in the lower side wall of the hollow cylinder of the valve core, and the exhaust holes are in the form of a fan ring, and the included angle between any two adjacent exhaust holes is the same.

[0009] Compared with the prior art, the application has the following beneficial effects: 1. The rotary exhaust valve can realize rapid exhaust by rotating the knob by 120°, is convenient to open and close, has a large caliber, greatly improves the exhaust rate, can realize rapid exhaust of sealed ammunition packaging boxes, and speeds up the ammunition support speed.

[0010] 2. The rotary exhaust valve has a self-locking function, can automatically continue to exhaust after rotation, and does not need external force to maintain. It is convenient to operate, simple in structure, and suitable for exhaust of various sealed packaging boxes. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 FIG. 1 is a structural schematic diagram of the high-efficiency rotary exhaust valve of the application.

[0012] Figure 2 FIG. 2 is a cross-sectional view of the high-efficiency rotary exhaust valve of the application.

[0013] Figure 3 FIG. 3 is another cross-sectional view of the high-efficiency rotary exhaust valve of the application.

[0014] Figure 4 FIG. 4 is a cross-sectional view of the shell.

[0015] Figure 5 FIG. 5 is a structural schematic diagram of the valve core.

[0016] Figure 6 FIG. 6 is a connection schematic diagram of the knob and the knurled pin.

[0017] The marks in the figure are as follows: 1. Shell, 1-1. Annular baffle, 2. Valve core, 2-1. Convex platform, 2-2. Curved sliding groove, 2-3. Exhaust hole, 2-4. Hanging ear, 3. Knurled pin, 4. Slotted nut, 5. Tension spring, 6. O-shaped sealing ring, 7. Knob, 7-1. Pin hole, 7-2. Radial protrusion. DETAILED DESCRIPTION

[0018] The application will be further described below in combination with specific embodiments. Embodiment 1

[0019] As Figures 1-3As shown, a high-efficiency rotary exhaust valve, comprising an open shell 1, the bottom of the shell 1 is provided with a mounting hole, the edge of the bottom of the shell 1 mounting hole is provided with an annular baffle 1-1, the outer side of the annular baffle 1-1 is provided with external threads, used for threaded cooperation with the slotted nut 4; the mounting hole of the shell 1 is inserted with a valve core 2, the main body of the valve core 2 is a hollow cylinder with an open top, the side wall of the hollow cylinder is provided with two curved sliding grooves 2-2 for use as a guide rail for the knurled pin 3, the lower side wall of the hollow cylinder is provided with a plurality of exhaust holes 2-3, the bottom of the hollow cylinder is provided with a boss 2-1, the boss 2-1 is located outside the shell 1, the boss 2-1 is used to place the O-shaped sealing ring 6; the outer side of the valve core 2 is provided with a knob 7, the upper part of the knob 7 is provided with a knurled pin 3, the side of the knob 7 is provided with a pin hole 7-1, the pin hole 7-1 is used to insert the knurled pin 3, and the two ends of the knurled pin 3 are fixed on the side wall of the knob 7 after passing through the two curved sliding grooves 2-2, respectively, a tension spring 5 is hung between the knurled pin 3 and the inner side of the bottom of the hollow cylinder, the valve core 2 is raised or lowered by rotating the knob 7 under the joint action of the knurled pin 3 and the curved sliding groove 2-2, the bottom edge of the knob 7 is provided with a radial annular protrusion 7-2, the radial annular protrusion 7-2 is installed inside the annular baffle 1-1, the outer side of the radial annular protrusion 7-2 is provided with a slotted nut 4, the slotted nut 4 is connected with the outer side of the annular baffle 1-1 by threads, and the radial annular protrusion 7-2 is used to rotate under the limitation of the slotted nut 4.

[0020] Further, as shown in the figure, Figure 3 The inner side of the bottom of the hollow cylinder of the valve core 2 is provided with a hanging ear 2-4, one end of the tension spring 5 is hung on the hanging ear 2-4, and the other end is hung on the middle part of the knurled pin 3.

[0021] Further, as shown in the figure, Figure 2 The O-shaped sealing ring 6 is provided between the boss 2-1 and the bottom of the shell 1, and the O-shaped sealing ring 6 is provided outside the bottom of the hollow cylinder.

[0022] Further, as shown in the figure, Figure 4 The lower side wall of the hollow cylinder of the valve core 2 is provided with three exhaust holes 2-3, the exhaust holes 2-3 are fan-shaped, and the included angle between any two adjacent exhaust holes 2-3 is the same.

[0023] Working process and principle: In use, the shell 1 is welded to the designated position of the packaging box body, the O-ring 6 is sleeved on the valve core 2, the knob 7 is sleeved on the valve core 2 from the bottom through the shell 1, the knurled pin 3 is passed through and fixed with the pin hole 7-1 aligned with the curved sliding slot 2-2, then the slotted nut 4 is installed, finally the pull spring 5 is respectively hooked on the knurled pin 3 and the hanging ear 2-4 at the bottom of the valve core 2, when exhaust is needed, the knob 7 is rotated, under the guidance of the curved sliding slot 2-2, the valve core 2 moves downward as a whole, so that the exhaust hole 2-3 is communicated with the inside of the packaging box to exhaust, after the exhaust is completed, the knob 7 is reversely rotated, the valve core 2 moves upward as a whole to reset. The opening and closing of the exhaust valve are realized by rotating the knob, and rapid exhaust is realized.

Claims

1. A high-efficiency rotary exhaust valve, characterized in that: The invention comprises an open shell (1), wherein a mounting hole is provided at the bottom of the shell (1), an annular baffle (1-1) is provided at the edge of the mounting hole at the bottom of the shell 1, and an external thread is provided on the outer side of the annular baffle (1-1); a valve core (2) is inserted into the mounting hole of the shell (1), the main body of the valve core (2) is a hollow cylinder with an open top, the side wall of the hollow cylinder is provided with two curved grooves (2-2), the lower side wall of the hollow cylinder is provided with a plurality of exhaust holes (2-3), the bottom of the hollow cylinder is provided with a boss (2-1), and the boss (2-1) is located on the outer side of the shell (1); a knob (7) is provided on the outer side of the valve core (2), and the upper part of the knob (7) is cross-threaded with a knurled The knurled pin (3) is fixed to the side wall of the knob (7) after passing through the curved slots (2-2) on both sides. A tension spring (5) is hung between the knurled pin (3) and the inner side of the bottom of the hollow cylinder. The valve core (2) is lifted or lowered by rotating the knob (7) under the joint action of the knurled pin (3) and the curved slot (2-2). The bottom edge of the knob (7) is provided with an annular radial protrusion (7-2). The radial protrusion (7-2) is installed on the inner side of the annular baffle (1-1). The outer side of the radial protrusion (7-2) is provided with a slotted nut (4). The slotted nut (4) is threadedly connected to the outer side of the annular baffle (1-1).

2. A high-efficiency rotary exhaust valve according to claim 1, characterized in that: A hanging ear (2-4) is provided at the inner center of the bottom of the hollow cylinder of the valve core (2), one end of the tension spring (5) is hung on the hanging ear (2-4), and the other end is hung on the middle of the knurled pin (3).

3. A high-efficiency rotary exhaust valve according to claim 1, characterized in that: An O-type sealing ring (6) is provided between the boss (2-1) and the bottom of the housing (1), and the O-type sealing ring (6) is sleeved on the outer side of the bottom of the hollow cylinder.

4. A high-efficiency rotary exhaust valve according to claim 1, characterized in that: Three exhaust holes (2-3) are provided on the lower side wall of the hollow cylinder of the valve core (2). The exhaust holes (2-3) are in a fan-shaped shape, and the angles between any two adjacent exhaust holes (2-3) are the same.

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