Quick filling valve

Abstract

The utility model discloses a quick filling valve which comprises a valve body and a valve element, the valve element is axially installed in the valve body in a sliding mode, a compression spring is arranged between the valve element and the valve body, a liquid filling cavity is formed in the valve element, an inlet communicated with the liquid filling cavity is formed in the upper end of the valve body, and the valve element is arranged in the valve body. A liquid filling cavity is formed in the valve body, a liquid outlet pipe communicated with the liquid filling cavity is arranged at the lower end of the valve element, a valve shaft penetrating through the liquid filling cavity and the liquid outlet pipe is fixedly installed on the valve body, the lower end of the valve shaft is in sealing fit with the inner wall of the liquid outlet pipe, and an air return sleeve is further fixedly installed on the valve element. The liquid outlet pipe is sleeved with the air return sleeve, an air return channel is formed between the air return sleeve and the liquid outlet pipe, an air return connecting pipe communicated with the air return channel is further arranged on the air return sleeve, and a sealing flange part in sealing contact with the upper edge of the bottle opening is further arranged on the air return sleeve. According to the quick filling valve, air can be better returned during filling, and the filling speed is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid filling, in particular to a fast filling valve. Background Art

[0002] The filling valve is mainly a core component of the filling machine. The upper end of the filling valve is installed on the liquid storage tank. Several filling valves are driven to rotate and cooperate with the upper mouth of the transported beverage bottle one by one, so that after the filling valve is opened, the liquid in the liquid storage tank is poured into the beverage bottle.

[0003] A filling valve is disclosed in the public document with the authorization announcement number CN 208327377 U. The filling valve mainly returns the gas in the beverage bottle to the liquid storage tank through the return air pipe in the middle to achieve rapid filling of liquid. However, there are still some unreasonable aspects of the filling valve.

[0004] Firstly, the use of the filling valve requires that the top of the liquid storage tank be connected to a negative pressure system, which adds additional cost; secondly, when the filling valve is being filled, liquid will enter the return air pipe, and a structure similar to a connecting pipe is formed between the return air pipe and the liquid channel during filling. When the filling is completed, the liquid level in the return air pipe will be relatively high; when the bottle drops, the air pressure in the bottle mouth will return to atmospheric pressure. Since the liquid storage tank is under negative pressure, the atmospheric pressure can press the excess liquid that overflows the lower end of the return air pipe back to the liquid storage tank through the return air pipe. Obviously, the accuracy requirement for the negative pressure in the liquid storage tank is very strict and cannot be too low, because sufficient vacuum suction is required to return the excess liquid to the liquid storage tank. However, before the beverage bottle rises for filling, the beverage bottle is connected to the inside of the liquid storage tank through the return air pipe. At this time, the beverage bottle shrinks and deforms due to the negative pressure. In this way, the internal space of the beverage bottle becomes smaller and cannot accommodate the original filling volume. In this way, the liquid will overflow, resulting in insufficient liquid filling. The deformed beverage bottle will also affect the quality of the finished product. Finally, the filling valve relies solely on the sealing ring at the lower end of the return air pipe for sealing, which may cause the risk of leakage after long-term use. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a fast filling valve, which can better return air during filling and improve the filling speed.

[0006] The closure of the valve body is formed in the form of a hollow tube, and the bottom of the tube is provided with a hollow tube, and the bottom of the tube is provided with a hollow tube.

[0007] As a more preferred scheme, the valve shaft includes an upper valve shaft and a lower valve shaft, the upper valve shaft and the lower valve shaft are fixedly connected, an upper sealing platform is arranged on the upper valve shaft, an upper sealing platform edge is arranged on the valve core, and the elastic force of the compression spring acts on the valve core to squeeze and seal the upper sealing platform.

[0008] As a more preferred scheme, a lower sealing platform is provided at the lower end of the lower valve shaft, a guide end plate is provided at the lower end of the lower sealing platform, a sealing ring is squeezed between the lower sealing platform and the guide end plate, and a shielding portion for partially shielding the return air channel is provided at the outer edge of the guide end plate, an outer diameter of the edge of the shielding portion is less than or equal to the outer diameter of the return air pipe, and a guide slope is provided at the edge of the shielding portion.

[0009] As a more preferred scheme, the upper end surface of the sealing flange portion is provided with a lower annular mating boss, the valve core is provided with an upper annular mating boss, a connecting ring is welded between the lower annular mating boss and the upper annular mating boss, and the return air pipe is fixed on the connecting ring and connected with the return air channel.

[0010] As a more preferred scheme, the valve core includes an upper sliding tube portion and a lower connecting tube portion fixed to each other, the upper sliding tube portion is slidably installed inside the valve body, a lower spring seat is fixed inside the upper sliding tube portion, a through hole is provided on the lower spring seat for convenient passage of the valve shaft, an upper spring seat is fixed at the upper end of the valve shaft, the compression spring is sleeved on the valve shaft and arranged between the upper spring seat and the lower spring seat, the upper annular mating boss is provided on the lower connecting tube portion, and the liquid outlet pipe is connected to the lower part of the lower connecting tube portion.

[0011] As a more preferred solution, the lower connecting tube portion and the liquid outlet pipe are integrally formed, and the upper sliding tube portion and the lower connecting tube portion are threadedly connected and a sealing ring is squeezed between them.

[0012] As a more preferred solution, a sliding bearing is further provided between the valve body and the upper sliding tube portion, and a piston sealing ring is embedded in the upper end of the upper sliding tube portion.

[0013] As a more preferred solution, an upper connecting boss is provided at the upper end of the lower valve shaft, the upper connecting boss and the upper valve shaft are threadedly connected, and the lower valve shaft is configured as a thin rod section in the area between the upper connecting boss and the lower sealing platform.

[0014] As a more preferred solution, a mounting shaft perpendicular to the liquid outlet pipe is fixed to the outer side of the connecting ring, and a force-applying bearing is rotatably mounted on the mounting shaft.

[0015] After adopting the above technical scheme, the effect of the utility model is as follows: since the valve core is also fixedly installed with an air return sleeve, the air return sleeve is sleeved on the outside of the liquid outlet pipe, an air return channel is formed between the air return sleeve and the liquid outlet pipe, the air return sleeve is also provided with an air return connecting pipe connected with the air return channel, and the air return sleeve is also provided with a sealing flange part which is in sealing contact with the upper edge of the bottle mouth. When in use, the bottle mouth will contact the sealing flange part and squeeze the valve core, so that the valve core as a whole will retract upward. At this time, the seal between the lower end of the liquid outlet pipe and the valve shaft is released. At this time, the liquid is poured into the beverage bottle through the liquid filling chamber and the liquid outlet pipe, and the air in the beverage bottle during the filling process will be discharged through the air return channel. Since the air return channel is composed of the annular gap between the air return sleeve and the liquid outlet pipe, the overall air return area can be set larger than the area of ​​the central air return pipe, so that the air return speed is faster, and fast filling is better achieved. After the filling is completed, there may be liquid in the return air sleeve. However, since the return air is directly connected to the atmosphere through the return air pipe and does not need to be connected to the liquid storage tank, the position of the return air pipe is set relatively low, that is, the height of the return air channel is relatively low. During filling, even if the liquid enters the return air channel, it will be discharged from the return air pipe. After the final filling is completed, when the beverage bottle is separated from the sealing flange, the lower end of the return air channel will open. At this time, the liquid in the vertical return air channel will quickly flow back into the bottle due to gravity. Since the return air area at the lower end of the return air channel can be set relatively large, the liquid flows out very smoothly, which avoids the accumulation of liquid in the return air channel and causing the return air channel to be blocked, affecting the filling speed.

[0016] Furthermore, since the valve shaft includes an upper valve shaft and a lower valve shaft, the upper valve shaft and the lower valve shaft are fixedly connected, an upper sealing platform is arranged on the upper valve shaft, an upper sealing platform edge is arranged on the valve core, and the elastic force of the compression spring acts on the valve core to make the upper sealing platform edge and the upper sealing platform squeeze and seal. Therefore, the upper sealing platform and the upper sealing platform edge are also sealed, and the lower end of the lower valve shaft and the liquid outlet pipe are also sealed, thereby realizing secondary sealing, and the sealing performance is more reliable, especially when there is a lot of liquid in the liquid storage tank, the pressure generated by the liquid is also relatively large, and since the upper space is sufficient, the sealing element between the upper sealing platform and the upper sealing platform edge can be better arranged and selected, so the sealing reliability is better, and after the reliable sealing between the upper sealing platform and the upper sealing platform edge, the liquid pressure on the seal between the lower end of the lower valve shaft and the liquid outlet pipe will be relatively small, so the sealing part can also ensure reliable sealing for a long time.

[0017] Since a lower sealing platform is provided at the lower end of the lower valve shaft, a guide end plate is provided at the lower end of the lower sealing platform, a sealing ring is squeezed between the lower sealing platform and the guide end plate, and a shielding portion that partially shields the return air channel is provided at the outer edge of the guide end plate, and the outer diameter of the edge of the shielding portion is less than or equal to the outer diameter of the return air pipe, and a guiding inclined surface is provided at the edge of the shielding portion, so that the bottle mouth can be better covered on the outside of the return air sleeve through the shielding portion on the guide end plate, so as to avoid errors causing misalignment and collision between the edge of the bottle mouth and the edge of the return air sleeve.

[0018] Since a lower annular mating boss is provided on the upper end face of the sealing flange portion, an upper annular mating boss is provided on the valve core, a connecting ring is welded between the lower annular mating boss and the upper annular mating boss, and the return air pipe is fixed on the connecting ring and connected with the return air channel, the connecting ring can be used to better weld and fix the valve core and the return air sleeve, and the installation of the return air pipe is also convenient.

[0019] Furthermore, since an upper connecting boss is provided at the upper end of the lower valve shaft, the upper connecting boss and the upper valve shaft are threadedly connected, the area of ​​the lower valve shaft between the upper connecting boss and the lower sealing platform is configured as a thin rod section. The design of the thin rod section can ensure that there is sufficient liquid outlet space in the liquid outlet pipe, thereby increasing the filling speed.

[0020] Since a mounting shaft perpendicular to the liquid outlet pipe is fixed to the outer side of the connecting ring, a force bearing is rotatably mounted on the mounting shaft. Therefore, when the quick filling valve needs to be cleaned, it is not necessary to install a dummy bottle, and a cam that matches the force bearing can be arranged on the rotation path of the force bearing. When the force bearing contacts the cam, the valve core will be driven to rise and fall, so that the quick filling valve is automatically opened without lifting the bottle mouth, thereby meeting the automatic cleaning requirements of the quick filling valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a three-dimensional structural diagram of an embodiment of the utility model;

[0023] Figure 2 It is a three-dimensional diagram of another angle of the embodiment of the utility model;

[0024] Figure 3 It is an axial cross-sectional view of an embodiment of the utility model;

[0025] In the accompanying drawings: 1. valve body; 2. valve core; 21. upper sealing platform edge; 22. upper sliding tube; 23. lower connecting tube; 24. upper annular matching boss; 3. upper valve shaft; 31. upper sealing platform; 4. lower valve shaft; 41. upper connecting boss; 42. thin rod section; 43. lower sealing platform; 44. guide end plate; 441. shielding part; 5. liquid filling chamber; 6. liquid outlet pipe; 7. return air sleeve; 8. return air channel; 9. sealing flange; 91. lower annular matching boss; 10. lower spring seat; 11. upper spring seat; 12. piston sealing ring; 13. return air pipe; 14. mounting shaft; 15. force bearing; 16. compression spring; 17. connecting ring; 18. sliding bearing; 19. inlet. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below through specific embodiments.

[0027] like Figures 1 to 3 As shown, a quick filling valve comprises a valve body 1 and a valve core 2, wherein the valve core 2 is axially slidably installed in the valve body 1. In this embodiment, a sliding bearing 18 is further provided between the valve body 1 and the valve core 2, and a piston sealing ring 12 is embedded in the upper end of the valve core 2. The piston sealing ring 12 can seal the valve core 2 and the valve body 1 during the sliding process of the valve core 2 to ensure the sealing effect, while the sliding bearing 18 can ensure the smooth sliding of the valve core 2.

[0028] A compression spring 16 is arranged between the valve core 2 and the valve body 1, a liquid filling chamber 5 is arranged on the valve core 2, an inlet 19 connected to the liquid filling chamber 5 is arranged at the upper end of the valve body 1, a liquid outlet pipe 6 connected to the liquid filling chamber 5 is arranged at the lower end of the valve core 2, a valve shaft penetrating the liquid filling chamber 5 and the liquid outlet pipe 6 is fixedly mounted on the valve body 1, and the lower end of the valve shaft is sealed with the inner wall of the liquid outlet pipe 6, a return air sleeve 7 is also fixedly mounted on the valve core 2, the return air sleeve 7 is sleeved on the outside of the liquid outlet pipe 6, a return air channel 8 is formed between the return air sleeve 7 and the liquid outlet pipe 6, a return air connecting pipe 13 connected to the return air channel 8 is also arranged on the return air sleeve 7, and a sealing flange portion 9 sealingly contacting the upper edge of the bottle mouth is also provided on the return air sleeve 7.

[0029] The valve core 2 includes an upper sliding tube portion 22 and a lower connecting tube portion 23 fixed to each other. The upper sliding tube portion 22 is slidably installed inside the valve body 1. A lower spring seat 10 is fixed inside the upper sliding tube portion 22. The lower spring seat 10 is provided with a through hole for the valve shaft to pass through. An upper spring seat 11 is fixed to the upper end of the valve shaft. The compression spring 16 is sleeved on the valve shaft and arranged between the upper spring seat 11 and the lower spring seat 10. The upper annular matching boss 24 is provided on the lower connecting tube portion 23. The liquid outlet pipe 6 is connected to the lower part of the lower connecting tube portion 23. The compression spring 16 is a stainless steel spring.

[0030] The lower connecting pipe portion 23 and the liquid outlet pipe 6 are integrally formed, and the upper sliding pipe portion 22 and the lower connecting pipe portion 23 are threadedly connected and a sealing ring is squeezed between them.

[0031] The valve shaft includes an upper valve shaft 3 and a lower valve shaft 4, which are fixedly connected to each other. An upper sealing platform 31 is provided on the upper valve shaft 3, and an upper sealing platform edge 21 is provided on the valve core 2. The elastic force of the compression spring 16 acts on the valve core 2 to squeeze and seal the upper sealing platform edge 21 with the upper sealing platform 31. The upper sealing platform 31 and the upper sealing platform edge 21 are sealed by a sealing gasket to achieve end face sealing. The upper sealing platform 31 and the upper sealing platform edge 21 are sealed, and the liquid pressure below the upper sealing platform 31 will be smaller, and the sealing pressure between the liquid outlet pipe 6 and the lower valve shaft 4 will be smaller, so that the sealing reliability is higher.

[0032] The lower end of the lower valve shaft 4 is provided with a lower sealing platform 43, and the lower end of the lower sealing platform 43 is provided with a guide end plate 44. A sealing ring is squeezed between the lower sealing platform 43 and the guide end plate 44. The outer edge of the guide end plate 44 is provided with a shielding portion 441 that partially shields the return air channel 8. The outer diameter of the edge of the shielding portion 441 is less than or equal to the outer diameter of the return air pipe 13, and the edge of the shielding portion 441 is provided with a guiding slope. The shielding portion 441 in this embodiment is a radial shielding strip, and the number of shielding strips is multiple. The size of the guide end plate 44 can be set to match the outer diameter of the liquid outlet pipe 6, and the shielding strip extends radially outward to shield the return air channel 8. The shielding strip can play a guiding role, and at the same time, it can also prevent the bottle mouth of the plastic bottle from being misaligned and colliding with the return air sleeve 7.

[0033] An upper connecting boss 41 is provided at the upper end of the lower valve shaft 4 , and the upper connecting boss 41 is threadedly connected to the upper valve shaft 3 . The lower valve shaft 4 is configured as a thin rod section 42 in the area between the upper connecting boss 41 and the lower sealing platform 43 .

[0034] The upper end surface of the sealing flange 9 is provided with a lower annular mating boss 91, the valve core 2 is provided with an upper annular mating boss 24, a connecting ring 17 is welded between the lower annular mating boss 91 and the upper annular mating boss 24, the return air pipe 13 is fixed on the connecting ring 17 and communicates with the return air channel 8. The outer side of the connecting ring 17 is also fixed with a mounting shaft 14 perpendicular to the liquid outlet pipe 6, and a force bearing 15 is rotatably mounted on the mounting shaft 14.

[0035] The working principle of the quick filling valve in this embodiment is as follows: first, a plurality of quick filling valves are fixed to the bottom of the liquid storage tank, and the inlet 19 at the upper end of the quick filling valve is connected to the inside of the liquid storage tank, so as to facilitate the filling of the liquid. The quick filling valves are arranged at equal intervals in a circle and driven to rotate. During the rotation, the beverage bottle will be driven to rise, and the return air sleeve 7 will be inserted into the bottle mouth. Finally, when the bottle mouth contacts and seals with the sealing flange 9, the entire return air sleeve 7 is axially inserted into place, and then the beverage bottle continues to rise, and the valve core 2 will be pushed upward, so that the lower end of the liquid outlet pipe 6 and the valve shaft will be separated and opened, and the liquid will be poured into the beverage bottle. , and the gas in the beverage bottle will be discharged through the return air channel 8. During the filling process, liquid may enter the return air channel 8. If too much liquid enters, it will flow out through the return air pipe 13. Finally, only the liquid in the return air sleeve 7 will remain. After the filling is completed, the beverage bottle drops, and the bottle mouth will be separated from the sealing flange 9. At this time, the beverage bottle will be connected to the outside world. Under the action of gravity, the liquid in the return air channel 8 will flow into the beverage bottle due to gravity. Since the amount of residual liquid accumulated during each filling is always the same, the amount of liquid returned to the beverage bottle is also the same, thereby ensuring that the amount of liquid filled in each beverage bottle is consistent. Since the return air channel 8 in this embodiment is annular, the overall return air cross-sectional area can be set larger than the area of ​​the central return air pipe in the background technology, so that no liquid film will be formed, and it can also ensure that the liquid entering the return air channel 8 flows back to the beverage bottle smoothly. The speed of the return air speed directly affects the filling speed of the filling valve. Obviously, the fast filling valve of this embodiment has a faster filling speed than the background technology.

[0036] When the quick filling valve needs to be cleaned, the cam that cooperates with the force bearing can be raised to cooperate with the force bearing. In this way, the force bearing of the quick filling valve will contact the cam during the rotation of the quick filling valve, causing the valve core to rise or fall. The rise opens the quick filling valve, thereby achieving cleaning, and the fall of the valve core closes the quick filling valve.

[0037] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solution of the present invention, without departing from the design spirit of the present invention, should fall within the scope of protection defined in the claims of the present invention.

Claims

1. A quick filling valve, comprising a valve body and a valve core, the valve core is axially slidably installed in the valve body, a compression spring is arranged between the valve core and the valve body, a liquid filling chamber is arranged on the valve core, an inlet communicating with the liquid filling chamber is arranged at the upper end of the valve body, a liquid outlet pipe communicating with the liquid filling chamber is arranged at the lower end of the valve core, a valve shaft penetrating the liquid filling chamber and the liquid outlet pipe is fixedly installed on the valve body, the lower end of the valve shaft is sealed with the inner wall of the liquid outlet pipe, and the characteristics are: A return air sleeve is also fixedly installed on the valve core, and the return air sleeve is sleeved on the outside of the liquid outlet pipe. A return air channel is formed between the return air sleeve and the liquid outlet pipe. The return air sleeve is also provided with a return air connecting pipe connected to the return air channel, and the return air sleeve is also provided with a sealing flange part that is in sealing contact with the upper edge of the bottle mouth.

2. A fast filling valve as claimed in claim 1, characterized in that: The valve shaft includes an upper valve shaft and a lower valve shaft, the upper valve shaft and the lower valve shaft are fixedly connected, an upper sealing platform is arranged on the upper valve shaft, an upper sealing platform edge is arranged on the valve core, and the elastic force of the compression spring acts on the valve core to squeeze and seal the upper sealing platform edge with the upper sealing platform.

3. A fast filling valve as claimed in claim 2, characterized in that: A lower sealing platform is provided at the lower end of the lower valve shaft, and a guide end plate is provided at the lower end of the lower sealing platform. A sealing ring is squeezed between the lower sealing platform and the guide end plate, and a shielding portion for partially shielding the return air channel is provided at the outer edge of the guide end plate. The outer diameter of the edge of the shielding portion is less than or equal to the outer diameter of the return air pipe, and a guiding slope is provided at the edge of the shielding portion.

4. A fast filling valve as claimed in claim 1, characterized in that: The upper end surface of the sealing flange is provided with a lower annular mating boss, the valve core is provided with an upper annular mating boss, a connecting ring is welded between the lower annular mating boss and the upper annular mating boss, and the return air pipe is fixed on the connecting ring and communicated with the return air channel.

5. A fast filling valve as claimed in claim 4, characterized in that: The valve core includes an upper sliding tube portion and a lower connecting tube portion fixed to each other, the upper sliding tube portion is slidably installed inside the valve body, a lower spring seat is fixed inside the upper sliding tube portion, a through hole is provided on the lower spring seat for convenient passage of the valve shaft, an upper spring seat is fixed on the upper end of the valve shaft, the compression spring is sleeved on the valve shaft and arranged between the upper spring seat and the lower spring seat, the upper annular mating boss is provided on the lower connecting tube portion, and the liquid outlet pipe is connected to the lower part of the lower connecting tube portion.

6. A fast filling valve as claimed in claim 5, characterized in that: The lower connecting pipe part and the liquid outlet pipe are integrally formed, and the upper sliding pipe part and the lower connecting pipe part are threadedly connected and a sealing ring is squeezed between them.

7. A fast filling valve as claimed in claim 6, characterized in that: A sliding bearing is also arranged between the valve body and the upper sliding tube portion, and a piston sealing ring is embedded in the upper end of the upper sliding tube portion.

8. A fast filling valve as claimed in claim 2, characterized in that: An upper connecting boss is arranged at the upper end of the lower valve shaft, the upper connecting boss is threadedly connected to the upper valve shaft, and the lower valve shaft is arranged as a thin rod section in the area between the upper connecting boss and the lower sealing platform.

9. A fast filling valve as claimed in claim 4, characterized in that: A mounting shaft perpendicular to the liquid outlet pipe is also fixed on the outer side of the connecting ring, and a force-applying bearing is rotatably mounted on the mounting shaft.

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