Non-opening pressure one-way valve

Abstract

The non-opening-pressure one-way valve comprises a male valve body, a female valve body, a valve element, a first sealing assembly and a second sealing assembly. A first air passing hole is formed in the upper end in the male valve body, a cavity is formed in the lower end in the male valve body, and the lower end of the first air passing hole communicates with the cavity. A second air passing hole is formed in the female valve body; the male valve body is connected to the upper end of the female valve body, and the second air passing hole communicates with the cavity. The valve core is arranged in the cavity; the first sealing assembly is arranged between the male valve body and the female valve body; the second sealing assembly is arranged on the valve element. And the top surface of the cavity is conical. The valve core comprises a hollow frame and a top core, the top core is connected to the upper end of the hollow frame, and the upper end of the top core is conical; the non-opening pressure one-way valve aims to overcome the existing defects, and is simple in structure and convenient to use and maintain.

Description

Technical Field

[0001] The utility model relates to a non-opening pressure one-way valve. Background Art

[0002] During the production of the BFS equipment, sterile gas needs to be introduced into the hollow tube embryo extruded from the die head to support the tube embryo; since sterile gas is introduced, the relevant pipelines of the BFS equipment need to be sterilized by high-temperature steam before formal production, and electrical components such as servo valves cannot withstand high temperatures, so a one-way valve needs to be placed between the steam sterilization pipeline and the servo valve to prevent damage to the electrical components during high-temperature steam sterilization;

[0003] Conventional one-way valves all have opening pressure, and the blowing pressure of the die head itself is very small, which often causes the one-way valve to fail to open normally or to be in an unstable state after opening, resulting in an unstable amount of gas entering the hollow tube embryo, affecting product quality.

[0004] Therefore, a non-opening pressure one-way valve is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to overcome the existing defects and provide a non-opening pressure one-way valve with simple structure and convenient use and maintenance.

[0006] The technical solution to achieve the above object is: a non-opening pressure one-way valve, comprising a male valve body, a female valve body, a valve core, a first sealing assembly and a second sealing assembly;

[0007] A first air hole is formed at the upper end of the male valve body, and a chamber is formed at the lower end thereof, wherein the lower end of the first air hole is connected to the chamber;

[0008] A second air hole is provided inside the mother valve body;

[0009] The male valve body is connected to the upper end of the female valve body, the second air hole is connected to the chamber; the valve core is arranged in the chamber;

[0010] The first sealing assembly is arranged between the male valve body and the female valve body; the second sealing assembly is arranged on the valve core.

[0011] Preferably, the top surface of the chamber is conical.

[0012] Preferably, the valve core includes a hollow frame and a top core, the top core is connected to the upper end of the hollow frame, and the upper end of the top core is conical; a groove is provided on the outer wall of the top core for connecting the second sealing assembly.

[0013] Preferably, the second sealing assembly comprises a valve core sealing ring, and the valve core sealing ring is connected in the groove.

[0014] Preferably, the lower end of the male valve body is provided with an external thread, the upper end of the female valve body is provided with an internal thread, the lower end of the male valve body is connected to the upper end of the female valve body through threads; and the first sealing assembly is connected to the lower end of the male valve body.

[0015] Preferably, the first sealing assembly comprises a valve body sealing ring, and the valve body sealing ring is connected between the lower end of the male valve body and the female valve body.

[0016] Preferably, the diameter of the hollow frame is larger than the diameter of the second air hole.

[0017] Preferably, the top core diameter is smaller than the inner diameter of the chamber.

[0018] The beneficial effects of the utility model are as follows: the one-way valve without opening pressure can move freely in the chamber by arranging the valve core, and during production, the first air hole of the male valve body and the second air hole of the female valve body can be in a connected state by their own gravity, and opened by gravity without any other additional force; when high-temperature steam sterilization is carried out, the valve core is moved upward by the steam pressure, so that the first air hole of the male valve body and the second air hole of the female valve body are in a disconnected state, which can not only well solve the problem of unstable air supply of the hollow tube embryo of the die head, but also has a simple structure and is easy to maintain, which greatly improves the qualified rate of the production products of the blowing filling sealing equipment and improves the economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the non-opening pressure check valve of the utility model;

[0020] Figure 2 It is a cross-sectional view from another perspective of the non-opening pressure check valve of the utility model;

[0021] Figure 3 It is a schematic diagram of the valve core of the utility model;

[0022] Figure 4 It is a schematic diagram of the appearance of the non-opening pressure one-way valve of the utility model;

[0023] Figure 5 It is a bottom view of the non-opening pressure one-way valve of the utility model.

[0024] In the figure: 1. valve body sealing ring; 2. valve core sealing ring; 3. male valve body; 4. female valve body; 5. valve core; 51. hollow frame; 52. top core; 53. groove; 6. first air hole; 7. chamber; 8. second air hole. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] The utility model will be further described below in conjunction with the accompanying drawings.

[0027] like Figure 1-5 As shown, a non-opening pressure check valve comprises a male valve body 3, a female valve body 4, a valve core 5, a first sealing assembly and a second sealing assembly; a first air hole 6 is provided at the upper end of the male valve body 3, and a chamber 7 is provided at the lower end thereof, and the top surface of the chamber 7 is conical. The lower end of the first air hole 6 is connected to the chamber 7; a second air hole 8 is provided inside the female valve body 4;

[0028] like Figure 1 , 2 As shown in , 3, the male valve body 3 is connected to the upper end of the female valve body 4, and the second air hole 8 is connected to the chamber 7; the valve core 5 is arranged in the chamber 7; the valve core 5 includes a hollow frame 51 and a top core 52, the top core 52 is connected to the upper end of the hollow frame 51, and the upper end of the top core 52 is conical; the outer wall of the top core 52 is provided with a groove 53 for connecting the second sealing component. The diameter of the hollow frame 51 is larger than the diameter of the second air hole 8. The diameter of the top core 52 is smaller than the inner diameter of the chamber 7. The second sealing component includes a valve core sealing ring 2, and the valve core sealing ring 2 is connected in the groove 53.

[0029] like Figure 1 , 2 As shown, the first sealing component is arranged between the male valve body 3 and the female valve body 4; the second sealing component is arranged on the valve core 5. The lower end of the male valve body 3 is provided with an external thread, the upper end of the female valve body 4 is provided with an internal thread, and the lower end of the male valve body 3 is connected with the upper end of the female valve body 4 through a thread; the first sealing component is connected to the lower end of the male valve body 3. The first sealing component includes a valve body sealing ring 1, which is connected between the lower end of the male valve body 3 and the female valve body 4.

[0030] When the blow-fill-seal machine is in formal production, since the one-way valve is installed vertically, the valve core 5 moves downward to the lowest position along the chamber 7 of the male valve body 3 under the action of gravity. At this time, the first air hole 6 of the male valve body 3 and the second air hole 8 of the female valve body 4 are in a connected state, and the gas enters the chamber 7 through the first air hole 6 and enters the second air hole 8 through the hollow frame 51, and is opened by gravity without any other additional force; when the die head air blowing pipeline is undergoing high-temperature steam sterilization (the steam pressure is generally around 2 bar), due to the action of the high-temperature steam pressure, the valve core 5 moves upward to the highest position along the axial direction of the chamber 7 of the male valve body 3, and the valve core sealing ring 2 on the top core 52 is close to the inner hole cone surface of the male valve body 3. At this time, the first air hole 6 of the male valve body 3 and the second air hole 8 of the female valve body 4 are in a disconnected state, thereby protecting the subsequent electrical components such as the servo valve.

[0031] The one-way valve without opening pressure can freely move the valve core 5 in the chamber 7. During production, the first air hole 6 of the male valve body 3 and the second air hole 8 of the female valve body 4 can be connected by their own gravity and opened by gravity without any other additional force. During high-temperature steam sterilization, the valve core 5 is moved upward by steam pressure, so that the first air hole 6 of the male valve body 3 and the second air hole 8 of the female valve body 4 are disconnected. This not only can well solve the problem of unstable air supply of the hollow tube embryo in the die head, but also has a simple structure and is easy to maintain, which greatly improves the qualified rate of the production products of the blow-fill-seal equipment and improves the economic benefits.

[0032] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A non-opening pressure check valve, characterized in that: It comprises a male valve body (3), a female valve body (4), a valve core (5), a first sealing component and a second sealing component; The upper end of the male valve body (3) is provided with a first air hole (6), and the lower end of the male valve body (3) is provided with a chamber (7), and the lower end of the first air hole (6) is connected to the chamber (7); A second air hole (8) is provided inside the mother valve body (4); The male valve body (3) is connected to the upper end of the female valve body (4); the second air hole (8) is connected to the chamber (7); the valve core (5) is arranged in the chamber (7); The first sealing component is arranged between the male valve body (3) and the female valve body (4); the second sealing component is arranged on the valve core (5); The valve core (5) comprises a hollow frame (51) and a top core (52), wherein the top core (52) is connected to the upper end of the hollow frame (51), and the upper end of the top core (52) is conical; a groove (53) is provided on the outer wall of the top core (52) for connecting the second sealing assembly; The second sealing component comprises a valve core sealing ring (2), and the valve core sealing ring (2) is connected in the groove (53); The lower end of the male valve body (3) is provided with an external thread, the upper end of the female valve body (4) is provided with an internal thread, and the lower end of the male valve body (3) is connected to the upper end of the female valve body (4) via threads; the first sealing assembly is connected to the lower end of the male valve body (3); The first sealing assembly comprises a valve body sealing ring (1), and the valve body sealing ring (1) is connected between the lower end of the male valve body (3) and the female valve body (4).

2. The non-opening pressure check valve according to claim 1, characterized in that: The top surface of the chamber (7) is conical.

3. The non-opening pressure check valve according to claim 1, characterized in that: The diameter of the hollow frame (51) is greater than the diameter of the second air hole (8).

4. The non-opening pressure check valve according to claim 1, characterized in that: The diameter of the top core (52) is smaller than the inner diameter of the chamber (7).

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