Normal-temperature filling valve

Abstract

The utility model relates to the technical field of filling equipment, in particular to a normal-temperature filling valve which comprises a valve body assembly, a valve seat assembly, a shifting wheel assembly, a centering assembly and a cleaning cup assembly. The valve body assembly comprises a barrel and a liquid valve rod installed in the barrel, a wine valve rod is arranged on the upper portion of the liquid valve rod, an air valve rod is arranged in the wine valve rod and composed of an air valve rod upper portion and an air valve rod lower portion, the air valve rod lower portion is located in the wine valve rod, and the air valve rod upper portion extends out of the wine valve rod to be connected with the shifting wheel assembly. An air valve needle is installed in the air valve rod lower portion, a third spring is arranged between the air valve needle and the air valve rod upper portion, and the air valve rod upper portion and the air valve rod lower portion are connected through an elastic pin. According to the utility model, the filling work can be carried out at the normal temperature of 10-15 DEG C through the optimized design, so that the energy consumption in the filling process flow is greatly reduced; the liquid loss in the filling process is almost zero, meanwhile, the pre-injection process is omitted, the energy-saving effect is improved, and pollution to a working table in the filling process is reduced.

Description

Technical Field

[0001] The utility model relates to the technology in the field of filling equipment, in particular to a normal-temperature filling valve. Background Art

[0002] With the improvement of people's living standards, the pursuit of beverages, beers, mineral waters, etc. by everyone has gradually become more diversified and differentiated, rather than a single product. The currently popular craft beers, various customized beverage products in the world, etc. are good examples. A filling valve is a technology for filling various liquid materials such as carbonated liquids and non-carbonated liquids into various packaging containers such as bottles, cans, boxes, barrels or bags. Mechanized filling can not only improve productivity, reduce product loss, ensure packaging quality, but also reduce the mutual pollution between the production environment and the filled materials. Therefore, at present, filling technology has been widely applied to the automated filling production in pharmaceutical, daily chemical, food and special industry factories. To accurately complete filling, the filling valve is an essential and important component.

[0003] In the traditional beer filling valve, during filling, the liquid level can reach the top of the valve stem, and this part of the liquid will not be filled into the bottle (it is difficult to ensure the consistency of the liquid level). When the residual liquid in the return air pipe is purged, it will be directly discharged onto the workbench, wasted (liquid loss), and at the same time, carbon dioxide is consumed; and it causes environmental pollution on the workbench. Therefore, it is not conducive to the energy conservation and emission reduction of enterprises and increases costs; traditional beer filling needs to control the temperature at about 4 degrees for filling. Through the entire filling process flow of the brewery (as Figure 9 shown), it can be obtained that the energy consumption for maintaining a certain temperature range during operation is quite large, and the lower the maintained temperature, the greater the energy consumption. At present, there are also normal-temperature filling production lines, but the biggest problem in normal-temperature filling is the instability of the liquid body during the filling process. The existing normal-temperature filling technology is more likely to release carbon dioxide during the pressure relief process, resulting in foaming and wine overflow, affecting the filling effect, and cannot effectively solve the problem that a large number of bubbles appear when the beer at normal temperature is led out, resulting in unstable filling. Summary of the Invention

[0004] In order to overcome the above deficiencies existing in the prior art, the purpose of the utility model is to provide a normal-temperature filling valve, which can carry out filling work at normal temperature of 10 degrees to 15 degrees, solve the problems of easy foaming and wine overflow and unstable filling of the traditional filling valve during normal-temperature filling, can replace the existing low-temperature filling valve, greatly save the energy consumption in the filling process flow; the liquid loss during filling is almost zero, and at the same time, the pre-blowing process is omitted to improve the energy-saving effect and reduce the pollution to the workbench during filling.

[0005] To achieve the above object, a normal-temperature filling valve of the present technical solution includes a filling valve and a liquid cylinder. The filling valve includes a valve seat assembly, a valve body assembly and a centering assembly mounted on the valve seat assembly, and a dial wheel assembly and a cleaning cup assembly mounted on the centering assembly. The valve body assembly is located inside the liquid cylinder. The valve body assembly includes a cylinder body and a liquid valve stem movably installed inside the cylinder body. A wine valve stem is provided at the upper part of the liquid valve stem, and an air valve stem that can move up and down is provided inside the wine valve stem. A guide ring is provided at the upper end of the cylinder body. The wine valve stem passes through the guide ring and extends into the cylinder body to be sealingly connected to the liquid valve stem. The air valve stem is composed of an upper part of the air valve stem and a lower part of the air valve stem. The lower part of the air valve stem is located inside the wine valve stem. The upper part of the air valve stem extends out of the wine valve stem to connect to the dial wheel assembly. The lower part of the air valve stem is of a hollow structure and is provided with an air valve needle. A third spring is provided between the air valve needle and the upper part of the air valve stem. The lower part of the wine valve stem extends into the cylinder body to be connected to the liquid valve stem. The air valve needle provided at the lower part of the air valve stem located inside the wine valve stem extends downward at one end out of the air valve stem to seal the top end of the liquid valve stem. A first spring is provided between the guide ring and the air valve stem. An O-ring is provided at the top end of the wine valve stem. A second spring is provided between the O-ring and the guide ring. A swirler is provided at the lower part of the liquid valve stem.

[0006] Further, the cleaning cup assembly includes a cleaning cup, a sleeve installed inside the cleaning cup, and a compression spring. The compression spring is located between the bottom end of the sleeve and the cleaning cup. A sealing ring is provided on the inner side of the upper part of the cleaning cup, and a disc spring is provided on the sealing ring.

[0007] Further, the centering assembly includes a centering guide rod and a roller shaft provided on the centering guide rod. A roller is provided on the roller shaft, and a shaft retaining snap ring is clamped at the front end of the roller. A buffer block is provided on the centering guide rod between the valve seat assembly and the roller. A sliding sleeve is provided above the centering guide rod. The dial wheel assembly is installed on the sliding sleeve.

[0008] Further, the valve seat assembly includes a valve seat and a control valve assembly installed on the valve seat. The control valve assembly includes a valve sleeve and a valve rod installed inside the valve sleeve. A Y-shaped sealing ring is provided between the valve rod and the valve sleeve. An O-ring is provided between the valve sleeve and the valve seat. A compression spring is provided at one end of the valve rod. A valve rod end face sealing ring is also provided on the valve rod. The valve rod can move inside the valve sleeve. The cylinder body is sealingly installed on the valve seat. A liquid passage corresponding to the cylinder body is provided on the valve seat. The lower end of the liquid valve stem extends into the valve seat, and a liquid valve sealing pad capable of sealing the liquid passage is provided at the top of the lower end. A lower wine outlet corresponding to the liquid passage is also provided on the valve seat.

[0009] Further, a centering cup seat is provided at one end of the centering guide rod passing through the valve seat assembly. A centering cup is provided on the centering cup seat. A centering cup corresponding to the lower wine outlet on the valve seat assembly is provided on the centering cup. A bottle clamping rubber is installed inside the centering cup. The centering cup is fixed on the centering cup by a second snap ring.

[0010] Further, the control valve assembly is composed of three valves: a vacuum valve, a pressure relief valve, and a pressure increasing valve. An exhaust screw is correspondingly provided at one end of the pressure relief valve located inside the valve seat.

[0011] Further, the dial assembly includes a pressure pull rod, a housing sleeved on the pressure pull rod, and a ratchet wheel installed at one end of the pressure pull rod. The ratchet wheel is fixed at one end of the pressure pull rod by setting a shaft pressing retaining ring. A strip bearing is provided between the housing and the pressure pull rod. A spring sleeve is sleeved on the housing close to one side of the ratchet wheel. A spring is provided inside the spring sleeve, and the spring sleeve is on the housing. A friction plate is provided between the ratchet wheel and the spring sleeve. A pressure ring is further provided between the pressure pull rod and the housing. One end of the pressure pull rod extends into the liquid cylinder and is installed and connected to the upper part of the air valve rod.

[0012] Further, a no-bottle vacuum valve is also provided on the valve seat.

[0013] Further, a return air pipe passing through the lower wine outlet and the centering cup is provided at the lower end of the liquid valve rod; a wine valve rod pin hole is provided at the lower part of the wine valve rod; the O-ring is fixed on the wine valve rod by a circlip; the upper part and the lower part of the air valve rod are connected by an elastic pin.

[0014] Further, a vacuum cavity and a pressure increasing cavity are provided inside the liquid cylinder. The valve seat is hermetically connected to the liquid cylinder. A vacuum channel and a pressure increasing channel are provided inside the valve seat. The vacuum cavity is communicated with the liquid channel through the vacuum valve, and the pressure increasing cavity is communicated with the liquid channel through the pressure increasing valve.

[0015] The beneficial effects of the present utility model are as follows: The filling valve of the present utility model solves the problems that the traditional filling valve is prone to foaming and beer overflow during normal-temperature filling, and the filling is unstable. Just like when we pour beer in daily life, the iced beer has very few bubbles when poured out, while the normal-temperature beer has a large number of bubbles when poured out. Therefore, most beer manufacturers adopt low-temperature filling methods to avoid a large number of bubbles in the beer during filling. Low-temperature filling requires continuously maintaining the entire beer filling line at a relatively low temperature range of 2°C to 4°C to avoid a large number of bubbles during canning, which may cause canning overflow. Because maintaining a low temperature will greatly increase the energy and equipment usage costs, and is not conducive to energy conservation and emission reduction. However, the present utility model can be used for filling at a normal temperature range of 10°C to 15°C, and will not cause a large amount of foaming and overflow of the liquid, solving the problems of easy foaming and beer overflow during normal-temperature filling, and the filling instability. There is no need to continuously maintain a relatively low temperature range, which greatly saves energy in the entire filling process; at the same time, after the valve is forcibly closed during the filling process, the residual liquid in the return air pipe is blown back into the liquid cylinder by a large pressure air broom, ensuring that the liquid loss is almost zero. Secondly, this filling valve also omits the pre-spraying process (equivalent to omitting carbon dioxide purging), which has an energy-saving effect and reduces the pollution of the workbench; without making other modifications to the filling machine, seamless replacement can be achieved under the condition that the installation position and structural dimensions of the filling valve of the existing mechanical filling machine remain unchanged. By replacing the filling valve with the newly designed filling valve of the present utility model, normal-temperature filling can be realized on the original filling machine, and the filling temperature can be increased from the existing 2°C - 4°C to 10°C - 15°C, achieving cost savings and energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] For ease of explanation, the present utility model will be described in detail by the following preferred embodiments and accompanying drawings.

[0017] Figure 1 is a schematic diagram of the overall structure of a normal-temperature filling valve of the present utility model;

[0018] Figure 2 is a schematic sectional view of a normal-temperature filling valve of the present utility model;

[0019] Figure 3 is a schematic diagram of the structure of a normal-temperature filling valve of the present utility model with a cleaning cup installed;

[0020] Figure 4 is a schematic diagram of the control valve assembly structure in a normal-temperature filling valve of the present utility model;

[0021] Figure 5 is a schematic diagram of the structure of the dial wheel assembly in a normal-temperature filling valve of the present utility model;

[0022] Figure 6 is a schematic diagram of vacuum pumping and backpressure before filling of a normal-temperature filling valve of the present utility model;

[0023] Figure 7 It is a schematic diagram of the residual liquid being blown back into the liquid cylinder after filling by a normal temperature filling valve of the present utility model;

[0024] Figure 8 It is a schematic diagram of the pressure relief process after filling by a normal temperature filling valve of the present utility model;

[0025] Figure 9 It is a flow chart of traditional low-temperature filling of beer.

[0026] In the figure: valve body assembly 1, valve seat assembly 2, dial assembly 3, centering assembly 4, cleaning cup assembly 5, cylinder body 11, liquid valve rod 12, wine valve rod 13, air valve rod 14, upper part of air valve rod 141, lower part of air valve rod 142, air valve needle 143, third spring 144, elastic pin 145, guide ring 15, first spring 16, O-ring 17, second spring 18, swirl body 19, cleaning cup 51, sleeve 52, compression spring 53, sealing ring 54, disc spring 55, centering guide rod 41, roller shaft 42, roller 43, shaft retaining ring 44, buffer block 45, sliding sleeve 46, centering cup seat 47, centering cup 471, centering cup 472, bottle clamping rubber 473, second snap ring 474, valve seat 21, control valve assembly 22, valve sleeve 221, valve rod 222, Y-shaped sealing ring 223, O-ring 23, compression spring 224, valve rod end sealing ring 225, vacuum valve 226, pressure relief valve 227, pressure adding valve 228, exhaust screw 229, pressure pull rod 31, housing 32, ratchet wheel 33, shaft end retaining ring 34, belt bearing 35, spring sleeve 36, spring 361, friction plate 37, pressure ring 38, bottleless vacuum valve 211, wine outlet 215, return air pipe 121, wine valve rod pin hole 131, liquid cylinder 6, filling bottle 7, vacuum cavity 8, pressure adding cavity 9, liquid valve gasket 122, snap ring 132, liquid channel 212, vacuum channel 213, pressure adding channel 214. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] The following further describes a normal-temperature filling valve according to the present utility model with reference to the accompanying drawings:

[0030] As Figures 1-5 shown, a normal-temperature filling valve includes a filling valve and a liquid cylinder 6. The liquid cylinder contains normal-temperature filling liquid. The filling valve includes a valve seat assembly 2, a valve body assembly 1 and a centering assembly 4 mounted on the valve seat assembly 2, and a dial assembly 3 and a cleaning cup assembly 5 mounted on the centering assembly 4; the valve body assembly 1 is located inside the liquid cylinder 6; the valve body assembly 1 includes a cylinder body 11 and a liquid valve stem 12 movably installed inside the cylinder body 11. A wine valve stem 13 is provided on the upper part of the liquid valve stem 12, and an air valve stem 14 that can move up and down is provided inside the wine valve stem 13; a guide ring 15 is provided at the upper end of the cylinder body 11, and the wine valve stem 13 passes through the guide ring 15 and extends into the cylinder body 11 to be sealingly connected to the liquid valve stem 12; the air valve stem 14 is composed of an upper air valve stem 141 and a lower air valve stem 142. The lower air valve stem 142 is located inside the wine valve stem 13, and the upper air valve stem 141 extends outside the wine valve stem 13 to connect to the dial assembly 3. The dial assembly is used to control the valve body assembly. The lower air valve stem 142 is of a hollow structure and is provided with an air valve needle 143. A sealing structure is provided at the top of the air valve needle. A third spring 144 is provided between the air valve needle 143 and the upper air valve stem 141; the upper air valve stem 141 and the lower air valve stem 142 are connected by an elastic pin 145. The air valve needle can be pushed away by pressure to open the wine valve stem to connect the filling bottle and the liquid cylinder; the lower part of the wine valve stem 13 extends into the cylinder body 11 to be connected to the liquid valve stem 12. The air valve needle 143 provided at the lower part of the air valve stem 14 located inside the wine valve stem 13 extends downward and outside the air valve stem 14 to seal the top of the liquid valve stem 12; the wine valve stem 13 is also provided with a wine valve stem pin hole 131, and the position where the wine valve stem pin hole 131 is located is higher than the top of the liquid valve stem 12; a first spring 16 is provided between the guide ring 15 and the air valve stem 14. An O-ring 17 fixed by a snap ring 132 is provided at the top of the wine valve stem 13, and a second spring 18 is provided between the O-ring 17 and the guide ring 15; a swirler 19 is provided at the lower part of the liquid valve stem 12. A return air pipe 121 passing through the lower wine port 215 and the centering cup 472 is provided at the middle position of the top of the lower end of the liquid valve stem 12. The return air pipe is a communicating structure with the liquid valve stem.

[0031] In this embodiment, the cleaning cup assembly 5 includes a cleaning cup 51, a sleeve 52 installed inside the cleaning cup 51, and a compression spring 53. The compression spring 53 is located between the bottom end of the sleeve 52 and the cleaning cup 51. A sealing ring 54 is provided on the inner side of the upper part of the cleaning cup 51, and a disc spring 55 is provided on the sealing ring 54. The inside of the filling valve can be cleaned by the cleaning cup to ensure the cleanliness of the filling valve.

[0032] In this embodiment, the centering assembly 4 includes a centering guide rod 41 and a roller shaft 42 provided on the centering guide rod 41. A roller 43 is provided on the roller shaft 42, and a shaft retaining ring 44 is clamped at the front end of the roller 43. A buffer block 45 is provided on the centering guide rod 41 between the valve seat assembly 2 and the roller 43. A sliding sleeve 46 is provided above the centering guide rod 41, and the dial assembly 3 is installed on the sliding sleeve 46. One end of the centering guide rod 41 passes through the valve seat assembly 2 and is provided with a centering cup seat 47. A centering cup 471 is provided on the centering cup seat 47. A centering cup 472 corresponding to the wine outlet 215 on the valve seat assembly 2 is provided on the centering cup 471. A bottle clamping rubber 473 is installed in the centering cup 472, and the centering cup 472 is fixed on the centering cup 471 by a second snap ring 474.

[0033] In this embodiment, the valve seat assembly 2 includes a valve seat 21 and a control valve assembly 22 installed on the valve seat 21. The control valve assembly 22 includes a valve sleeve 221 and a valve rod 222 installed inside the valve sleeve 221. A Y-shaped sealing ring 223 is provided between the valve rod 222 and the valve sleeve 221. An O-shaped sealing ring 23 is provided between the valve sleeve 221 and the valve seat 21. One end of the valve rod 222 is provided with a compression spring 224, and a valve rod end face sealing ring 225 is also provided on the valve rod 222. The valve rod 222 can move inside the valve sleeve 221. The cylinder body 11 is sealed and installed on the valve seat 21, and a liquid passage 212 corresponding to the cylinder body 11 is provided on the valve seat 21. The lower end of the liquid valve rod 12 extends into the valve seat 21, and a liquid valve gasket 122 capable of sealing the liquid passage is provided at the top of the lower end. A wine outlet 215 corresponding to the liquid passage 212 is also provided on the valve seat 21. The control valve assembly 22 is composed of three valves: a vacuum valve 226, a pressure relief valve 227, and a pressure boosting valve 228. An exhaust screw 229 is provided at one end of the pressure relief valve 227 corresponding to the inside of the valve seat 21. A no-bottle vacuum valve 211 is also provided on the valve seat 21. This no-bottle vacuum valve ensures the smooth progress of the cleaning cup cleaning procedure when cleaning the filling valve.

[0034] In this embodiment, the dial assembly 3 includes a pressure pull rod 31, a housing 32 sleeved on the pressure pull rod 31, and a ratchet wheel 33 installed at one end of the pressure pull rod 31. The ratchet wheel 33 is fixed to one end of the pressure pull rod 31 by setting a shaft pressing retaining ring 34. A strip bearing 35 is provided between the housing 32 and the pressure pull rod 31. A spring sleeve 36 is sleeved on one side of the housing 32 close to the ratchet wheel 33. A spring 361 is provided inside the spring sleeve 36, and the spring sleeve 36 is on the housing 32. A friction plate 37 is provided between the ratchet wheel 33 and the spring sleeve 36. A pressure ring 38 is further provided between the pressure pull rod 31 and the housing 32. One end of the pressure pull rod extending into the liquid cylinder is installed and connected to the upper part of the air valve rod for driving the air valve rod to move.

[0035] In this embodiment, except as otherwise specified, other sealing methods use O-ring seals. The good sealing performance of the O-ring seals ensures the overall sealing performance of the filling valve. The present utility model can also be used for filling other carbonated beverages.

[0036] Operating principle: As Figures 6-8 shown, a vacuum cavity 8 and a pressurizing cavity 9 are provided in the liquid cylinder 6. The valve seat 21 is hermetically connected to the liquid cylinder 6. A vacuum channel 213 and a pressurizing channel 214 are provided in the valve seat 21. The vacuum cavity 8 is communicated with the liquid channel 212 through a vacuum valve 226, and the pressurizing cavity 9 is communicated with the liquid channel 212 through a pressurizing valve 228. The filling bottle 7 is lifted upward by a bottle supporting cylinder (not labeled) to the position of the filling valve. Then the top of the bottle mouth enters the centering cup and is in a sealed state with the bottle clamping rubber. At this time, the liquid channel 212 - the wine outlet 215 - the filling bottle are in a sealed connection state. Before the formal filling, the following operations are carried out:

[0037] First vacuum extraction: Open the vacuum valve 226. The vacuum cavity 8 - the vacuum channel - the liquid channel - the filling bottle are communicated to evacuate the air in the filling bottle 7, and other components are in a closed state.

[0038] First backpressure: Open the dial assembly 3. Drive the valve body assembly 1 through the dial assembly 3. Then the air valve needle 143 is opened, and the liquid cylinder - the liquid valve rod - the filling bottle are communicated. Under the action of pressure, the carbon dioxide in the liquid cylinder 6 is infused into the filling bottle 7 through the liquid valve rod. Then the dial assembly 3 closes the air valve needle 143.

[0039] Second vacuum extraction: Open the vacuum valve 226 again to evacuate the remaining air and carbon dioxide in the filling bottle 7 from the vacuum cavity 8.

[0040] Secondary back pressure: The dial assembly 3 opens the valve again, the air valve needle 143 opens, and under the action of pressure, carbon dioxide in the liquid cylinder 6 is infused into the filling bottle 7; the pressures in the liquid cylinder 6 and the filling bottle 7 are made consistent. After the dial assembly releases, the liquid valve stem 12 in the valve body assembly 1 opens, and the liquid valve gasket no longer seals the liquid passage. At this time, the filling bottle 7 is in a connected state with the liquid cylinder during filling, and the filling liquid enters the filling bottle through the valve body assembly to start filling. During the filling process, since the pressure in the filling bottle is the same as that in the liquid cylinder and the liquid flows downward into the filling bottle by its own weight during filling (there is no need to apply pressure to the liquid to promote its flow), the pressure in the bottle is always the same as that in the liquid cylinder during filling (the gas in the filling bottle returns to the liquid cylinder through the return air pipe), and there is no pressure difference, so there will be no foaming phenomenon during filling.

[0041] Blow-back process: After filling is completed and the machine is stationary, the filling valve is forced to close through the dial assembly 3, that is, the liquid valve stem moves downward to make the liquid valve gasket seal the liquid passage again. Then the pressure valve 228 is opened to pressurize the filling bottle 7 through the pressure chamber 9. The air valve needle 143 is pushed upward under the action of pressure. Therefore, the hollow structure of the liquid valve stem is in a connected state, and the filling bottle is connected to the liquid cylinder. The residual liquid in the return air pipe and the excess liquid in the filling bottle are blown back into the liquid cylinder 6 through the pin hole 131 of the wine valve stem. Under pressure, the pressure in the filling bottle is greater than that in the liquid cylinder, so gas reflux will not occur. At the moment of pressure release, the air valve needle resets under the action of the third spring to seal the liquid valve stem. There is no pressurization function in traditional filling machinery.

[0042] Pressure relief process: With all other valves closed, the pressure relief valve 227 is opened, and the carbon dioxide in the filling bottle 7 is discharged through the pressure relief exhaust hole (not marked), and the entire filling operation ends. Because the excess gas (pressure) in the bottle has been blown back into the liquid cylinder during the blow-back process, the pressure in the bottle is greatly reduced (compared with the pressure during pressurization and filling). In the pressure relief process of traditional filling valves, the carbon dioxide and residual liquid in the bottle are discharged into the pressure relief cavity together, which will also cause a great waste of resources and increase the cost of the enterprise. It directly reaches the pressure relief process pipeline, so there are problems of waste and pollution of the workbench surface. Moreover, direct pressure relief will cause a large amount of gas in the liquid to precipitate due to the relatively high pressure in the bottle, resulting in problems such as foaming.

[0043] The filling valve of the present utility model solves the problems that the traditional filling valve is prone to foaming and beer overflow during normal-temperature filling, and the filling is unstable. Just like when we pour beer in daily life, ice-cold beer has very few bubbles when poured out, while normal-temperature beer has a large number of bubbles. Therefore, most beer manufacturers adopt low-temperature filling methods to avoid a large number of bubbles in the beer during filling. Low-temperature filling requires continuously maintaining the entire beer filling line at a relatively low temperature range of 2°C to 4°C to avoid a large number of bubbles during canning, which may cause canning overflow. Because maintaining a low temperature will greatly increase the energy and equipment usage costs, and is not conducive to energy conservation and emission reduction. However, the present utility model can be used for filling work in the temperature range of 10°C to 15°C at normal temperature, and will not cause a large amount of liquid foaming and overflow, etc., solving the problems of easy foaming and beer overflow during normal-temperature filling, and unstable filling. Without the need to continuously maintain a relatively low temperature range, it greatly saves energy in the entire filling process; at the same time, after the valve is forcibly closed during the filling process, the residual liquid in the return air pipe is blown back into the liquid cylinder by a large pressure air broom, ensuring that the liquid loss is almost zero. Secondly, this filling valve also omits the pre-spraying process (equivalent to omitting carbon dioxide purging), which has an energy-saving effect and reduces the pollution of the workbench surface; without making other modifications to the filling machine, it can be seamlessly replaced under the condition that the installation position and structural dimensions of the filling valve of the existing mechanical filling machine remain unchanged. By replacing the filling valve with the newly designed filling valve of the present utility model, normal-temperature filling can be achieved on the original filling machine, and the filling temperature can be increased from the existing 2°C to 4°C to 10°C to 15°C, achieving cost savings and energy conservation and emission reduction.

[0044] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A normal-temperature filling valve, comprising a filling valve and a liquid cylinder, characterized in that, the filling valve comprises a valve seat assembly, a valve body assembly and a centering assembly mounted on the valve seat assembly, and a dial assembly and a cleaning cup assembly mounted on the centering assembly; the valve body assembly is located inside the liquid cylinder; the valve body assembly includes a cylinder body, and a liquid valve stem movably installed inside the cylinder body, a wine valve stem is provided on the upper part of the liquid valve stem, and an air valve stem capable of moving up and down is provided inside the wine valve stem; a guide ring is provided at the upper end of the cylinder body, and the wine valve stem passes through the guide ring and extends into the cylinder body to be hermetically connected with the liquid valve stem; the air valve stem consists of an upper part of the air valve stem and a lower part of the air valve stem, the lower part of the air valve stem is located inside the wine valve stem, the upper part of the air valve stem extends outside the wine valve stem to connect the dial assembly, the lower part of the air valve stem is of a hollow structure and is provided with an air valve needle, and a third spring is provided between the air valve needle and the upper part of the air valve stem; the lower part of the wine valve stem extends into the cylinder body to be connected with the liquid valve stem, and the air valve needle provided on the lower part of the air valve stem located inside the wine valve stem extends downward to the outside of the air valve stem to seal the top of the liquid valve stem; a first spring is provided between the guide ring and the air valve stem, an O-ring is provided at the top of the wine valve stem, and a second spring is provided between the O-ring and the guide ring; a swirler is provided at the lower part of the liquid valve stem.

2. A normal-temperature filling valve according to claim 1, characterized in that: the cleaning cup assembly includes a cleaning cup, a sleeve installed inside the cleaning cup and a compression spring, the compression spring is located between the bottom end of the sleeve and the cleaning cup, a sealing ring is provided on the inner side of the upper part of the cleaning cup, and a disc spring is provided on the sealing ring.

3. A normal-temperature filling valve according to claim 1, characterized in that: the valve seat assembly includes a valve seat and a control valve assembly installed on the valve seat, the control valve assembly includes a valve sleeve and a valve stem installed inside the valve sleeve, a Y-shaped sealing ring is provided between the valve stem and the valve sleeve, an O-ring is provided between the valve sleeve and the valve seat, a compression spring is provided at one end of the valve stem, and a valve stem end face sealing ring is further provided on the valve stem, and the valve stem can move inside the valve sleeve; the cylinder body is hermetically installed on the valve seat, and a liquid passage corresponding to the cylinder body is provided on the valve seat; the lower end of the liquid valve stem extends into the valve seat and a liquid valve sealing pad capable of sealing the liquid passage is provided at the top of the lower end; a lower wine port corresponding to the liquid passage is further provided on the valve seat.

4. A normal-temperature filling valve according to claim 1, characterized in that: the centering assembly includes a centering guide rod and a roller shaft provided on the centering guide rod, a roller is provided on the roller shaft, an axial circlip is clamped at the front end of the roller, a buffer block is provided on the centering guide rod between the valve seat assembly and the roller, a sliding sleeve is provided above the centering guide rod, and the dial assembly is installed on the sliding sleeve.

5. A normal-temperature filling valve according to claim 4, characterized in that: one end of the centering guide rod passing through the valve seat assembly is provided with a centering cup seat, a centering cup is provided on the centering cup seat, a centering cup corresponding to the lower wine port on the valve seat assembly is provided on the centering cup, a bottle clamping rubber is installed inside the centering cup, and the centering cup is fixed on the centering cup by a second circlip.

6. A normal-temperature filling valve according to claim 3, characterized in that: The control valve assembly consists of three valves: a vacuum valve, a pressure relief valve, and a pressure increasing valve. One end of the pressure relief valve located inside the valve seat is correspondingly provided with an exhaust screw.

7. A normal temperature filling valve according to claim 1, characterized in that: The dial assembly includes a pressure pull rod, a housing sleeved on the pressure pull rod, and a ratchet wheel installed at one end of the pressure pull rod. The ratchet wheel is fixed at one end of the pressure pull rod by setting a shaft pressing retaining ring. A strip-shaped bearing is provided between the housing and the pressure pull rod. A spring sleeve is sleeved on one side of the housing close to the ratchet wheel. A spring is arranged inside the spring sleeve, and the spring sleeve is on the housing. A friction plate is provided between the ratchet wheel and the spring sleeve. A pressure ring is also provided between the pressure pull rod and the housing. One end of the pressure pull rod extends into the liquid cylinder and is installed and connected with the upper part of the air valve rod.

8. A normal temperature filling valve according to claim 3, characterized in that: The valve seat is further provided with a no-bottle vacuum valve.

9. A normal temperature filling valve according to claim 1, characterized in that: A return air pipe passing through the lower wine outlet and the centering cup is provided at the lower end of the liquid valve rod; a wine valve rod pin hole is provided at the lower part of the wine valve rod; the O-ring is fixed on the wine valve rod by a circlip; the upper part and the lower part of the air valve rod are connected by an elastic pin.

10. A normal temperature filling valve according to claim 1 or 6, characterized in that: A vacuum cavity and a pressure increasing cavity are provided inside the liquid cylinder. The valve seat is hermetically connected to the liquid cylinder. A vacuum channel and a pressure increasing channel are provided inside the valve seat. The vacuum cavity is communicated with the liquid channel through the vacuum valve, and the pressure increasing cavity is communicated with the liquid channel through the pressure increasing valve.

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