Filling pressure release valve

Abstract

And filling a pressure release valve. Relates to filling equipment. The front end of the valve body is provided with a connecting part used for being detachably and fixedly connected with a filling valve, and the tail end of the valve body is provided with a P1 opening; a through main runner is arranged between the connecting part and the P1 port; a rod cavity and a rodless cavity are formed in the main runner, and a discharge port communicated with the rod cavity and a port P2 communicated with the rodless cavity are formed in the valve body; the sealing ring is fixedly arranged in the main runner, and a flow hole is formed in the middle of the sealing ring; the valve rod is arranged in the main flow channel in a sliding mode, and circulation of the flow hole is controlled through sliding of the valve rod. After the filling head is completely separated from the filling opening, the filling opening is the same as the atmosphere, and the mixture remaining in the filling valve head is pumped away by the negative pressure cavity of the discharging opening, so that the residual material is discharged.

Description

Technical Field

[0001] The utility model relates to filling equipment, in particular to a filling pressure relief valve. Background Art

[0002] Aerosol refers to a preparation made by encapsulating drugs and suitable propellants in a pressure-resistant sealed container with a special valve system. When used, the contents are sprayed out with the help of the pressure of the propellant. In traditional aerosol products, the propellant is the power source of aerosol products and an indispensable part of the overall center of aerosol products. In order to improve the quality of medicinal and cosmetic products and reduce harm to the human body, binary aerosol products are derived, including valves and tanks with pouches. The driving force is air or nitrogen (compressed gas is placed between the pouch and the tank), so there is no need for the participation of propellants. Binary packaging products have gradually expanded from daily chemicals to food and even the pharmaceutical industry. In particular, the daily chemical industry has developed rapidly, and the demand for post-foaming products has increased greatly. Traditional binary filling equipment cannot complete the filling process.

[0003] During the actual filling operation, the material remaining in the filling valve body is prone to foaming, clogging and contamination of the valve head. At present, the industry generally adopts high-pressure direct charging, which has the disadvantage of only achieving filling but not online pressure relief and withdrawal. Utility Model Content

[0004] In view of the above problems, the utility model provides a filling pressure relief valve which has a delicate structure and can effectively prevent the valve head from being blocked by residues after filling.

[0005] The technical solution of the utility model is:

[0006] Filling pressure relief valve, including:

[0007] The valve body has a connection portion for detachably fixed connection with the filling valve at the front end, and a P1 port at the rear end; a main flow channel is provided between the connection portion and the P1 port; a rod cavity and a rodless cavity are provided in the main flow channel, and a discharge port connected to the rod cavity and a P2 port connected to the rodless cavity are provided on the valve body;

[0008] A sealing ring, fixedly arranged in the main flow channel, with a flow hole in the middle;

[0009] A valve stem is slidably arranged in the main flow channel, and the flow of the flow hole is controlled by sliding of the valve stem.

[0010] Specifically, the valve stem includes:

[0011] A rod portion, slidably disposed in the rod cavity;

[0012] The piston part is sealingly slidably arranged in the rodless cavity.

[0013] Specifically, the valve body comprises a connecting portion, a main valve portion and a tail cover portion which are sealed and detachably fixedly connected in sequence.

[0014] Specifically, the P1 port is arranged on the tail cover.

[0015] Specifically, the main valve portion is provided with a discharging seat which is detachably sealed and fixedly connected;

[0016] The discharge port is arranged on the discharge seat.

[0017] Specifically, the main flow channel is communicated with the flow channel of the filling valve head.

[0018] The utility model includes a valve body provided with a P1 port, a discharge port and a P2 port; a valve stem is slidably arranged in the main flow channel, and the flow of the flow hole is controlled by the sliding of the valve stem. When the filling valve head is lifted, the valve stem is separated from the sealing ring after being exhausted through the compressed air of the P2 port and the P1 port, and at this time, the flow channel of the filling valve head is connected with the discharge port. The discharge port is externally connected to a negative pressure pipeline, and when the filling head is completely separated from the filling port, the filling port is the same as the atmosphere, and the mixed material remaining in the filling valve head is sucked away by the negative pressure chamber of the discharge port, so that the residual material body is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0020] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the middle A area.

[0021] Figure 3 It is a schematic diagram of the internal structure of the filling pressure relief valve in the connected state;

[0022] In the figure, 100 is the valve body, 101 is the main flow channel, 102 is the P2 port, 110 is the connecting part, 120 is the main valve part, 130 is the tail cover part, 131 is the P1 port, 140 is the discharge seat, and 141 is the discharge port.

[0023] 200 is the valve stem, 210 is the rod portion, 220 is the piston portion,

[0024] 300 is the sealing ring,

[0025] 400 is the filling valve head,

[0026] 500 is the filling port. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Reference below Figure 1-3 Describe the embodiments of the utility model;

[0031] Filling pressure relief valve, including:

[0032] The valve body 100 has a connection portion 110 for detachably fixedly connecting with the filling valve at the front end, and a P1 port 131 at the rear end; a main flow channel 101 is provided between the connection portion 110 and the P1 port 131; a rod cavity and a rodless cavity are provided in the main flow channel 101, and a discharge port 141 communicating with the rod cavity and a P2 port 102 communicating with the rodless cavity are provided on the valve body 100;

[0033] A sealing ring 300 is fixedly disposed in the main flow channel 101 and has a flow hole in the middle;

[0034] The valve stem 200 is slidably disposed in the main flow channel 101 , and the flow of the flow hole is controlled by sliding of the valve stem 200 .

[0035] It is further defined that the valve stem 200 includes:

[0036] The rod portion 210 is slidably disposed in the rod cavity;

[0037] The piston portion 220 is sealingly and slidably disposed in the rodless cavity.

[0038] It is further defined that the valve body 100 includes a connecting portion 110 , a main valve portion 120 and a tail cover portion 130 which are detachably fixedly connected in sequence through threaded sealing.

[0039] The P1 port 131 is disposed on the tail cover portion 130 .

[0040] It is further defined that the main valve portion 120 is provided with a discharging seat 140 which is detachably and sealedly fixedly connected;

[0041] The discharge port 141 is disposed on the discharge seat 140 .

[0042] It is further defined that the main flow channel 101 is in communication with a flow channel of the filling valve head 400 .

[0043] How this case works:

[0044] The valve stem 200 is pressed tightly against the sealing ring 300 via the compressed air from the P1 port 131 , and the working condition is now the filling condition.

[0045] When the filling valve head 400 is lifted, the valve stem 200 is separated from the sealing ring 300 after the compressed air from the P2 port 102 and the exhaust from the P1 port 131. At this time, the flow channel of the filling valve head 400 is connected with the discharge port 141. The discharge port 141 is externally connected to a negative pressure pipeline. When the filling head is completely separated from the filling port, the filling port 500 is the same as the atmosphere. The mixed material remaining in the filling valve head 400 is sucked away by the negative pressure chamber of the discharge port 141, so that the residual material is discharged.

[0046] Regarding the contents disclosed in this case, there are a few points that need to be explained:

[0047] (1) The drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case. Other structures can refer to the general design;

[0048] (2) In the absence of conflict, the embodiments and features of the embodiments disclosed in this case may be combined with each other to obtain new embodiments;

[0049] The above are only specific implementation methods disclosed in this case, but the protection scope of the present disclosure is not limited thereto. The protection scope disclosed in this case should be based on the protection scope of the claims.

Claims

1. Filling pressure relief valve, characterized in that, include: The valve body has a connection portion for detachably fixed connection with the filling valve at the front end, and a P1 port at the rear end; a main flow channel is provided between the connection portion and the P1 port; a rod cavity and a rodless cavity are provided in the main flow channel, and a discharge port connected to the rod cavity and a P2 port connected to the rodless cavity are provided on the valve body; A sealing ring, fixedly arranged in the main flow channel, with a flow hole in the middle; A valve stem is slidably arranged in the main flow channel, and the flow of the flow hole is controlled by sliding of the valve stem.

2. The filling pressure relief valve according to claim 1, characterized in that: The valve stem comprises: A rod portion, slidably disposed in the rod cavity; The piston part is sealingly slidably arranged in the rodless cavity.

3. The filling pressure relief valve according to claim 1, characterized in that: The valve body comprises a connecting portion, a main valve portion and a tail cover portion which are sealed and detachably fixedly connected in sequence.

4. The filling pressure relief valve according to claim 3, characterized in that: The P1 port is arranged on the tail cover portion.

5. The filling pressure relief valve according to claim 3, characterized in that: The main valve portion is provided with a discharging seat which is detachably sealed and fixedly connected; The discharge port is arranged on the discharge seat.

6. The filling pressure relief valve according to claim 3, characterized in that: The main flow channel is communicated with the flow channel of the filling valve head.

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