Filling valve with pressure relief structure

Abstract

The utility model relates to the technical field of filling equipment, in particular to a filling valve with a pressure relief structure, which comprises a valve body, a base and a wine injection pipe, the bottom of the valve body is in threaded sealing connection with the base, a through hole is arranged at the bottom of the base, the wine injection pipe is arranged in the through hole, the side wall of the valve body is fixedly communicated with a wine inlet pipe, and pressure preparation air return pipes are arranged on two sides of the wine injection pipe. The upper end of the side wall of the valve body is provided with a pressure preparation air return port, the side wall of the base is provided with a pressure relief port, the other end of the pressure relief port is communicated with the upper end of the base, the upper end of the wine injection pipe is fixedly sleeved with a pressing plate, and a sealing block is fixedly arranged at the position, corresponding to the pressure relief port, of the lower end of the pressing plate. The top of the pressing plate is provided with a pressing mechanism, and the upper end of the pressure preparation air return pipe fixedly communicates with the pressing plate. According to the utility model, the pressure can be quickly relieved after pressure preparation and air return, the filling efficiency is improved, and the automation degree is high.

Description

Technical Field

[0001] The utility model relates to the technical field of filling equipment, and particularly relates to a filling valve with a pressure relief structure. Background Technique

[0002] With the continuous increase in the annual output of beer and carbonated beverages, the large-container packaging of beer and carbonated beverages has gradually increased. To meet the filling of large containers, the filling valves on large-container filling machines generally use long-tube filling valves. The existing long-tube filling valves mostly stop automatically when the container is full, and the liquid level height cannot be controlled. Moreover, the pressure preparation, gas return, and pressure relief use the same gas port. After the container is full of wine and stops, a large amount of wine liquid will be discharged during pressure relief, resulting in a large waste of the liquid to be filled. In order to provide a filling valve suitable for fixed liquid level filling of large containers and reducing the loss of the liquid to be filled, the long-tube positioning filling valve was thus invented.

[0003] In the patent with the publication number CN202729774U, a long-tube positioning filling valve is disclosed, which belongs to the field of light industrial machinery and is applicable to the isobaric filling machine for large containers of beer and carbonated beverage products. It consists of a wine injection pipe, a guide sleeve, a gasket, a filling valve base, an optoelectronic liquid level sensor, a filling valve body, a wine inlet pipe, pressure preparation, a gas return port, a pressure relief port, etc. A return air pipe engraved with an exhaust groove is welded on the filling valve base. The return air pipe, the wine injection pipe, the filling valve body, and the filling valve base form a three-chamber filling valve. The three-chamber filling valve separates the wine injection, pressure preparation, gas return, and pressure relief respectively, with dedicated chambers for dedicated use. The length of the return air pipe determines the liquid level height of the liquid to be filled in the container, avoiding a large waste of the liquid to be filled and realizing the fixed liquid level filling of the long-tube filling valve.

[0004] The above patent has the following problems:

[0005] When the filling valve is filling, the wine injection, pressure preparation, gas return, and pressure relief are separated respectively. After the pressure preparation and gas return, the pressure relief needs to be opened separately, and there is a time interval between the pressure relief and the pressure preparation and gas return, resulting in a decrease in filling efficiency and a low degree of automation. Therefore, we have introduced a filling valve with a pressure relief structure. Content of the Utility Model

[0006] The purpose of the utility model is to provide a filling valve with a pressure relief structure, which can quickly relieve pressure after pressure preparation and gas return, improve the filling efficiency, and has a high degree of automation, so as to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A filling valve with a pressure relief structure, comprising a valve body, a base and a wine injection pipe. The bottom of the valve body is threadedly and sealedly connected to the base. A through hole is provided at the bottom of the base, and the wine injection pipe is arranged in the through hole. A wine inlet pipe is fixedly communicated with the side wall of the valve body. Pressure equalizing return air pipes are arranged on both sides of the wine injection pipe. A hose is fixedly provided at the upper end of the wine injection pipe, and the other end of the hose is fixedly connected to the wine inlet pipe. A pressure equalizing return air port is provided at the upper end of the side wall of the valve body, and a pressure relief port is provided on the side wall of the base. The other end of the pressure relief port is communicated with the upper end of the base. A pressing plate is fixedly sleeved at the upper end of the wine injection pipe. A sealing block is fixedly provided at the position corresponding to the lower end of the pressing plate and the pressure relief port. A downward pressing mechanism is provided on the top of the pressing plate, and the upper end of the pressure equalizing return air pipe is fixedly communicated with the pressing plate.

[0009] Preferably, the downward pressing mechanism comprises two sliding rods. The two sliding rods are respectively fixedly arranged on both sides of the top of the pressing plate. A fixed block is slidably sleeved on the upper side of the rod wall of the sliding rod. The fixed block is fixedly connected to the middle part of the inner side wall of the valve body. A circular stop block is fixedly provided at the top of the sliding rod. A spring is movably sleeved on the rod wall of the sliding rod between the fixed block and the pressing plate.

[0010] Preferably, the diameter of the circular stop block is larger than the diameter of the sliding rod.

[0011] Preferably, the lower side opening of the wine injection pipe is hermetically arranged, and a plurality of wine injection holes are opened on the side wall of the lower end of the wine injection pipe.

[0012] Preferably, the sealing block is arranged in a conical shape.

[0013] Preferably, the sealing block is arranged as a corrosion-resistant rubber ring.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] For the filling valve with a pressure relief structure, by providing a base, a wine injection pipe, pressure equalizing return air pipes, a pressure relief port, a wine inlet pipe, a valve body, a circular stop block, sliding rods, fixed blocks, springs, hoses, a pressing plate, a sealing block, and a pressure equalizing return air port, place the filling container below the wine injection pipe. Push the valve body downward through a hydraulic push rod. The valve body drives the lower end of the wine injection pipe to enter the filling container. Open the pressure equalizing return air port. Perform pressure equalizing and air return operations on the filling container through the pressure equalizing return air port and the pressure equalizing return air pipes. When pressure relief is required, at this time, the hydraulic push rod continues to push the valve body downward. When the lower end of the wine injection pipe abuts against the filling container, the reaction force of the filling container pushes the wine injection pipe upward. The wine injection pipe drives the sliding rods to slide in the fixed blocks through the pressing plate. The pressing plate and the fixed blocks compress the springs. At this time, the pressing plate drives the sealing block to no longer seal with the pressure relief port. At this time, the pressure relief port automatically opens, and pressure relief can be quickly performed after pressure equalizing and air return, improving the filling efficiency and having a high degree of automation. Description of the Drawings

[0016] Figure 1It is a schematic structural diagram of a filling valve with a pressure relief structure.

[0017] Figure 2 It is a schematic internal structure diagram of a filling valve with a pressure relief structure.

[0018] Figure 3 It is Figure 2 an enlarged schematic diagram of part A in

[0019] In the figure: 1. Base; 2. Wine injection pipe; 3. Pressure backup return air pipe; 4. Pressure relief port; 5. Wine inlet pipe; 6. Valve body; 7. Circular block; 8. Slide rod; 9. Fixed block; 10. Spring; 11. Hose; 12. Pressure plate; 13. Sealing block; 14. Pressure backup return air port. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 3 , the present invention provides a technical solution:

[0022] A filling valve with a pressure relief structure includes a valve body 6, a base 1 and a wine injection pipe 2. The upper end of the valve body 6 is fixedly connected to the output end of an external hydraulic rod, the bottom of the valve body 6 is threadedly and sealedly connected to the base 1, a through hole is provided at the bottom of the base 1, the wine injection pipe 2 is arranged in the through hole, a wine inlet pipe 5 is fixedly communicated with the side wall of the valve body 6, pressure backup return air pipes 3 are arranged on both sides of the wine injection pipe 2, a hose 11 is fixedly provided at the upper end of the wine injection pipe 2, the other end of the hose 11 is fixedly connected to the wine inlet pipe 5, a pressure backup return air port 14 is provided at the upper end of the side wall of the valve body 6, a pressure relief port 4 is provided on the side wall of the base 1, the other end of the pressure relief port 4 is communicated with the upper end of the base 1, a pressure plate 12 is fixedly sleeved at the upper end of the wine injection pipe 2, a sealing block 13 is fixedly provided at the position corresponding to the lower end of the pressure plate 12 and the pressure relief port 4, a downward pressing mechanism is provided at the top of the pressure plate 12, the upper end of the pressure backup return air pipe 3 is fixedly communicated with the pressure plate 12, and a photoelectric liquid level sensor is fixedly installed on the side wall of the valve body 6.

[0023] The downward pressing mechanism includes two slide rods 8. The two slide rods 8 are respectively fixedly arranged on both sides of the top of the pressure plate 12. A fixed block 9 is slidably sleeved on the upper side of the rod wall of the slide rod 8. The fixed block 9 is fixedly connected to the middle part of the inner side wall of the valve body 6. A circular block 7 is fixedly provided at the top of the slide rod 8. A spring 10 is movably sleeved on the rod wall of the slide rod 8 between the fixed block 9 and the pressure plate 12.

[0024] The diameter of the circular stopper 7 is larger than that of the sliding rod 8, and the circular stopper 7 can prevent the sliding rod from disengaging from the fixed block 9.

[0025] The lower side opening of the wine injection pipe 2 is hermetically arranged, and a plurality of wine injection holes are formed in the side wall of the lower end of the wine injection pipe 2, which can facilitate the injection of wine into the filling container.

[0026] The sealing block 13 is arranged in a conical shape, and the conical sealing block 13 can facilitate the blocking of the pressure relief port.

[0027] The sealing block 13 is arranged as a corrosion-resistant rubber ring, which has good corrosion resistance and a long service life.

[0028] During use, place the filling container below the wine injection pipe 2, push the valve body 6 downward through the hydraulic push rod, the valve body 6 drives the lower end of the wine injection pipe 2 to enter the filling container, open the backpressure return air port 14, and perform backpressure and return air operations on the filling container through the backpressure return air pipe 3 via the backpressure return air port 14. When pressure relief is required, at this time, the hydraulic push rod continues to push the valve body 6 downward. When the lower end of the wine injection pipe 2 abuts against the filling container, the reaction force of the filling container pushes the wine injection pipe 2 upward, the wine injection pipe 2 drives the sliding rod 8 to slide in the fixed block 9 through the pressing plate 12, the pressing plate 12 and the fixed block 9 squeeze the spring 10. At this time, the pressing plate 12 drives the sealing block 13 to no longer seal the pressure relief port 4, and at this time, the pressure relief port 4 automatically opens, which can quickly perform pressure relief after backpressure and return air, improving the filling efficiency and having a high degree of automation.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filling valve with a pressure relief structure, comprising a valve body (6), a base (1) and a wine injection pipe (2), characterized in that: The bottom of the valve body (6) is threadedly and sealingly connected to the base (1). A through hole is provided at the bottom of the base (1). The wine injection pipe (2) is arranged in the through hole. The side wall of the valve body (6) is fixedly communicated with a wine inlet pipe (5). Pressure-supplying return air pipes (3) are arranged on both sides of the wine injection pipe (2). A hose (11) is fixedly provided at the upper end of the wine injection pipe (2). The other end of the hose (11) is fixedly connected to the wine inlet pipe (5). A pressure-supplying return air port (14) is provided at the upper end of the side wall of the valve body (6). A pressure relief port (4) is provided on the side wall of the base (1). The other end of the pressure relief port (4) is communicated with the upper end of the base (1). A pressing plate (12) is fixedly sleeved at the upper end of the wine injection pipe (2). A sealing block (13) is fixedly provided at the position corresponding to the lower end of the pressing plate (12) and the pressure relief port (4). A downward pressing mechanism is provided at the top of the pressing plate (12). The upper ends of the pressure-supplying return air pipes (3) are fixedly communicated with the pressing plate (12).

2. The filling valve with a pressure relief structure according to claim 1, characterized in that: The downward pressing mechanism includes two sliding rods (8). The two sliding rods (8) are respectively fixedly arranged on both sides of the top of the pressing plate (12). A fixed block (9) is slidably sleeved on the upper side of the rod wall of the sliding rod (8). The fixed block (9) is fixedly connected to the middle part of the inner side wall of the valve body (6). A circular stop block (7) is fixedly provided at the top of the sliding rod (8). A spring (10) is movably sleeved on the rod wall of the sliding rod (8) between the fixed block (9) and the pressing plate (12).

3. The filling valve with a pressure relief structure according to claim 2, wherein: The diameter of the circular stop block (7) is larger than the diameter of the sliding rod (8).

4. A filling valve with a pressure relief structure according to claim 1, characterized in that: The lower side opening of the wine injection pipe (2) is hermetically arranged, and a plurality of wine injection holes are formed in the side wall of the lower end of the wine injection pipe (2).

5. The filling valve with a pressure relief structure according to claim 1, characterized in that: The sealing block (13) is arranged in a conical shape.

6. The filling valve with a pressure relief structure according to claim 1, wherein: The sealing block (13) is arranged as a corrosion-resistant rubber ring.

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