A beer tap

Abstract

The application discloses a beer tap, and relates to the technical field of fluid control devices, and has the technical scheme as follows: the beer tap comprises a body, a lock cap, a valve rod and a lever, a first flow channel, a second flow channel and a connecting flow channel are arranged in the body, the first flow channel and the second flow channel are communicated through the connecting flow channel, the connecting flow channel is provided with a sealing surface, the lock cap is connected to the body and blocks the upper end of the connecting flow channel, the valve rod is slidably arranged in the connecting flow channel, the valve rod is provided with a first sealing part and a second sealing part, the first sealing part blocks the lower end of the connecting flow channel, the connecting flow channel is provided with a pre-tightening part, the pre-tightening part applies a pre-tightening force to the valve rod, and the second sealing part is tightly abutted against the sealing surface, the lever is hinged to the body, and a wine cup can push the lever and the valve rod to work.

Description

Technical Field

[0001] This invention relates to the field of fluid control device technology, and in particular to a beer tap. Background Technology

[0002] Currently, the production of pressurized beverages (such as beer) involves adding a certain amount of dissolved gas, typically carbon dioxide (CO2), to the drink. Although a certain amount of dissolved CO2 is naturally produced during beer brewing and fermentation, most commercial breweries add extra CO2 to their products. This addition serves two main purposes: first, from a quality control perspective, it ensures that all beers produced contain the same amount of CO2; second, the extra CO2 provides the beer with more effervescence, allowing consumers to enjoy a better flavor. Keg beer has been developing internationally for nearly thirty years, accounting for 30% of total beer production in Germany, 80% in the UK, and a significant proportion in other Western European countries. Keg beer requires a special beer tap when dispensed into open containers.

[0003] The beer dispensing tap (commonly called a beer tap) is an important component, consisting of a valve and a nozzle, used to control and guide the beer into an open container. For example, Chinese Patent No. CN111734836A discloses a beer dispensing valve for a beer machine. The valve includes a valve body, a lever, and a valve stem. The valve body has a valve stem hole adapted to the valve stem, and an operating hole on its side wall. The bottom of the valve body has a wine outlet pipe communicating with the valve stem hole. The side wall of the valve stem has a flow passage communicating with the wine outlet pipe. The valve stem is slidably disposed in the valve stem hole, and a drive hole for accommodating the lever is provided in the valve stem. The lever is hinged to the valve body, passes through the operating hole, and one end of the lever extends into the drive hole on the valve stem. The lever can be moved by a linear drive mechanism to drive the valve stem to reciprocate in the valve stem hole. The wine outlet valve also includes a valve base fixedly connected to one side of the valve body. The valve base has an inlet hole for receiving wine, CO2, or a cleaning fluid. There is a space between the valve stem hole and the inlet hole. A valve core fixedly connected to the valve stem is provided within the space. The entire process of dispensing wine, producing foam, and purging can be completed in a single movement from the rear to the front position. After completion, the valve can be quickly reset to the rear position, keeping the dispensing valve closed, making it easy to operate.

[0004] The above technical solution has the following drawbacks: Since the lever is located above the valve body, during dispensing, the operator needs to control the lever with one hand and hold the glass (open container) with the other hand near the lower end of the dispensing tube. In other words, the tap requires two hands to operate, which is inconvenient. Furthermore, because the dispensing tube is filled with beer, and the glass is filled with beer and the tip of the dispensing tube is submerged, the tip is not in contact with air. When the tap is closed and the glass is removed, the tip is essentially detached directly from the beer in the glass. Atmospheric pressure only acts on the tip, preventing the beer from flowing out and leaving residual beer in the tube. If the interval between dispensing is long, the residual beer in the tube comes into contact with outside air, causing it to spoil. This spoiled residue will be used in the next dispensing, affecting the taste of the next beer. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a beer tap to solve the technical problem of the inconvenience of using a beer tap.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a beer tap, the beer tap including a body, a locking cap, a valve stem, and a lever; the body having a first flow channel, a second flow channel, and a connecting flow channel, the connecting flow channel connecting the first and second flow channels, the connecting flow channel having a sealing surface; the locking cap being connected to the body and blocking the upper end of the connecting flow channel; the valve stem being slidably disposed within the connecting flow channel, the valve stem having a first sealing part and a second sealing part, the first sealing part blocking the lower end of the connecting flow channel; a pre-tightening member being disposed within the connecting flow channel, the pre-tightening member applying a pre-tightening force to the valve stem, causing the second sealing part to abut against the sealing surface; the lever being hinged to the body, when a beer glass pushes the lever to rotate, the lever can drive the valve stem to slide.

[0007] Through the above technical solution, flow channel one is connected to the inlet pipe, and flow channel two can be connected to the outlet pipe. Because the pre-tightening component continuously applies a pre-tightening force away from the locking cap to the valve stem, sealing part two is pressed against the sealing surface. At this time, the connecting flow channel is divided into upper and lower parts by sealing part two. The medium (beer or beverage) in flow channel one can only enter the lower half of the connecting flow channel through flow channel one. The operator holds the glass with one hand against the lever, causing the outlet pipe to insert into the glass. Then, the operator pushes the lever towards the body of the glass, which drives the valve stem to slide, causing sealing part two to move upwards and disengage. When the sealing surface is closed, the pre-tightening element is compressed by the valve stem. At this time, the upper and lower parts of the connecting channel are in a connected state, that is, the beer tap is opened, and the medium can enter the glass through channel one, connecting channel two, and channel two. After the operator finishes taking the beer, he moves the glass away from the lever, so that the lever is disengaged from the valve stem. The valve stem is reset downward by the pre-tightening force of the pre-tightening element, and the valve stem pushes the lever reset. Finally, the sealing part two re-isolates the connecting channel, and the beer tap is in a closed state. The operator can control the opening and closing of the beer tap with one hand to complete the beer taking (or storing) work, which is convenient to use.

[0008] Preferably, the valve stem includes a piston and a guide rod. The outer wall of the piston has a relief groove communicating with the connecting flow channel. A first sealing part is disposed on the piston and can slide within the connecting flow channel. A second sealing part is disposed between the piston and the guide rod, and the sealing surface can limit the second sealing part.

[0009] Through the above technical solution, after the second sealing part moves upward and separates from the sealing surface, the gap between the positioning groove and the connecting flow channel is larger, which can ensure the flow rate of the medium entering the second flow channel and improve the beer dispensing efficiency; while the first sealing part seals the lower end of the connecting flow channel, it can also slide with the valve stem. The structural design is reasonable and can improve the airtightness of this beer tap; after the second sealing part abuts against the sealing surface, the valve stem cooperates with the second sealing part to isolate the connecting flow channel, which can effectively improve the sealing performance of the second sealing part and ensure that there is no leakage problem in this tap.

[0010] Preferably, the piston and the guide rod are detachably connected, and the lower end of the guide rod is provided with a flange, which cooperates with the piston to limit the sealing part in two axial directions.

[0011] With the above technical solution, the second sealing part is placed between the piston and the guide rod. After the piston and the guide rod are connected, the flange at the lower end of the guide rod cooperates with the piston to clamp the second sealing part. The second sealing part can then slide up and down with the valve rod. Moreover, the flange can effectively press the second sealing part against the sealing surface, further improving the sealing performance of the second sealing part. In addition, after the piston and the guide rod are disassembled, the second sealing part can be replaced without damage, making the disassembly and assembly of the second sealing part convenient.

[0012] Preferably, the main body is connected to a wine outlet pipe that communicates with the second flow channel, and the lock cap has a through hole that connects the connecting flow channel to the outside. A linkage component is provided inside the connecting flow channel, and the linkage component can move with the valve stem and seal and open the through hole.

[0013] With the above technical solution, during the process of taking beer from the glass, the lower end of the dispensing tube is inserted into the glass, and the valve stem and linkage assembly are lifted by the lever. The linkage assembly seals the through hole, and the connecting channel connects channel one and channel two. The medium in channel one can smoothly enter the glass through the connecting channel, channel two, and dispensing tube. After the glass is filled with beer, the beer in the glass will submerge the lower end of the dispensing tube. At this time, the beer tap is closed, and the pre-tightening component drives the valve stem and linkage assembly to move down and re-isolate the connecting channel. The through hole is opened, and outside air can enter the upper end of the connecting channel through the through hole. The residual beer in the dispensing tube and channel two will be discharged into the glass due to atmospheric pressure, avoiding the generation of residual beer in the dispensing tube and channel two.

[0014] Preferably, the wine outlet pipe is rotatably connected to the main body.

[0015] With the above technical solution, the wine dispensing tube can rotate around the central axis of the flow channel two. When the user takes wine, he can rotate the wine dispensing tube so that the lower end of the wine dispensing tube is close to the inner wall of the wine glass, so that the medium discharged from the wine dispensing tube can flow into the wine glass along the inner wall of the wine glass, thereby reducing the generation of foam in the wine glass and improving the quality of wine taking.

[0016] Preferably, the linkage component includes a plug and a reset member. The plug is slidably connected to the valve stem, and the reset member is disposed between the plug and the valve stem. The reset member applies a force to the plug in the direction of the locking cap, and there is a reserved gap between the plug and the locking cap.

[0017] With the above technical solution, when the beer tap is closed, there is still a reserved gap between the plug and the locking cap, that is, the through hole is in the open state, and the connecting channel is connected to the outside through the through hole; after the valve stem, plug and reset part move up as a whole, the plug will first seal the through hole and the reset part will be squeezed, and then the lower end of the connecting channel will connect to the second channel, ensuring that the medium in the connecting channel will not leak through the through hole.

[0018] Preferably, the lower end of the plug is provided with a sliding groove adapted to the valve stem, the sliding groove slides and engages with the valve stem, and there is a clearance between the sliding groove and the valve stem.

[0019] With the above technical solution, after the valve stem moves upward, the plug contacts the locking cap first and seals the through hole. The clearance setting allows the valve stem to have space to move upward continuously, effectively increasing the sliding stroke of the valve stem, thereby increasing the connection area between the connecting flow channel and the second flow channel, and thus increasing the discharge flow rate of the medium.

[0020] Preferably, the plug and the lock cap are sealed by a sealing element.

[0021] Through the above technical solution, the sealing element further improves the sealing performance between the plug and the lock cap, ensuring the sealing performance of the through hole.

[0022] Preferably, the beer tap further includes an adjustment component disposed on the body, the adjustment component being capable of adjusting the flow rate of the medium entering the flow channel.

[0023] With the above technical solution, the operator can adjust the flow rate of the medium entering the flow channel by adjusting the adjustment component, thereby controlling the amount of beer dispensed per unit time of the beer tap. After a single adjustment, the subsequent beer dispensed will remain unchanged, further improving the user experience.

[0024] Preferably, the main body is connected to a connecting pipe communicating with the first flow channel; the adjustment component includes an adjustment plug and an adjustment shaft, the adjustment plug is disposed inside the connecting pipe, and the outer wall of the adjustment plug is adapted to the inner wall of the connecting pipe, and a connecting groove is formed on the adjustment plug; the main body is provided with an assembly hole communicating with the first flow channel, the adjustment shaft is rotatably disposed in the assembly hole, the inner end of the adjustment shaft has an eccentric protrusion adapted to the connecting groove, and the adjustment shaft can drive the adjustment plug to slide inside the connecting pipe.

[0025] The above technical solution uses the gap between the outer wall of the regulating plug and the wall of the connecting pipe as the flow channel for the medium. By rotating the regulating shaft, the eccentric protrusion drives the regulating plug to slide, thereby changing the position of the regulating plug in the connecting pipe and thus changing the flow rate of the liquid entering the flow channel through the connecting pipe, thereby achieving the regulation of the medium flow rate.

[0026] Preferably, the adjustment assembly further includes a dial and a knob. The dial is connected to the main body and has a gear position indicator. The knob is connected to the adjustment shaft and has an indicator pointing to the gear position indicator. The indicator can indicate the current gear position of the adjustment plug.

[0027] With the above technical solution, rotating the knob drives the adjusting shaft and the indicator to rotate synchronously, while the gear indicator remains stationary. The gear indicated by the indicator corresponds to the current flow rate; that is, the corresponding gear corresponds to the current position of the adjusting plug in the connecting pipe. When the adjusting plug is close to the main body, the gear is the highest, the gap between the outer wall of the adjusting plug and the wall of the connecting pipe is the largest, and the flow rate of the medium entering the first flow channel is the largest; conversely, when the adjusting plug is far from the main body, the gear is the lowest, the gap between the outer wall of the adjusting plug and the wall of the connecting pipe is the smallest, and the flow rate of the medium entering the first flow channel is the smallest. The flow rate visualization effect of this beer tap is better.

[0028] Preferably, the lever has a lever block on the side near the valve stem, the lever block can abut against the lower end of the valve stem, and the lower end of the lever is provided with a cup holder.

[0029] With the above technical solution, after the outer wall of the glass abuts against the cup holder, an external force is applied to the glass in the direction of the main body, causing the lever to rotate around the hinge. After the lever pushes the valve stem upward, the second flow channel connects with the lower half of the connecting flow channel, and the beer tap is in the open state. The cup holder can effectively prevent the glass from slipping or falling off the lever, improving the stability of the glass during the beer dispensing process.

[0030] In summary, the advantages of this invention compared to the prior art are as follows:

[0031] 1. With a reasonable structural design, the operator can control the opening and closing of the beer tap with one hand during the beer dispensing process. It is convenient to use, has good stability, and can effectively improve the user experience.

[0032] 2. No residual wine will be produced in the wine outlet pipe and flow channel after each wine extraction, and the quality of the wine will not change after two or more extractions.

[0033] 3. The tilt angle of the dispensing tube is adjustable, allowing the medium discharged from the dispensing tube to flow into the glass along the inner wall, thereby reducing foam in the glass and ensuring high-quality dispensing. Attached Figure Description

[0034] Figure 1 This is a schematic diagram illustrating the usage state of an embodiment;

[0035] Figure 2 This is a schematic diagram of the external structure of an embodiment;

[0036] Figure 3 This is a cross-sectional view of a beer tap with the tap closed (the arrows indicate the direction of rotation of the lever).

[0037] Figure 4 This is a cross-sectional schematic diagram of the main body in the embodiment;

[0038] Figure 5This is a schematic diagram of the structure in which the body and valve stem are engaged, as shown in the embodiment.

[0039] Figure 6 This is a schematic diagram of the structure after the valve stem and linkage assembly are assembled in the embodiment;

[0040] Figure 7 for Figure 6 A schematic diagram of the full cross-section structure;

[0041] Figure 8 A schematic diagram of the valve stem structure in another state;

[0042] Figure 9 This is a schematic diagram of the exploded structure of the regulating component in the embodiment;

[0043] Figure 10 This is a schematic diagram of the structure of the adjusting shaft in the embodiment;

[0044] Figure 11 This is a cross-sectional view of a beer tap with the tap open (the arrows indicate the direction of the medium flow).

[0045] Attached image label: 1. Wine glass;

[0046] 100. Body; 110. Flow channel one; 120. Flow channel two; 130. Connecting flow channel; 131. Sealing surface; 132. Pre-tightening component; 140. Wine outlet pipe; 150. Connecting pipe; 160. Assembly hole;

[0047] 200, lock cap; 210, through hole;

[0048] 300. Valve stem; 310. Piston; 311. Sealing part one; 312. Relief groove; 320. Guide rod; 321. Sealing part two; 322. Flange;

[0049] 400. Lever; 410. Pulley; 420. Cup holder;

[0050] 500. Linkage component; 510. Plug; 511. Slide groove; 512. Clearance gap; 513. Sealing groove; 520. Reset component; 530. Reserved clearance; 540. Sealing component;

[0051] 600, Adjustment component; 610, Adjustment plug; 611, Connecting groove; 620, Adjustment shaft; 621, Eccentric protrusion; 630, Dial; 631, Gear position indicator; 640, Knob; 641, Indicator. Detailed Implementation

[0052] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] The present invention will be further described in detail below with reference to the accompanying drawings.

[0054] A type of beer tap, such as Figures 1 to 11 As shown, this beer tap includes a body 100, a locking cap 200, a valve stem 300, and a lever 400. The body 100 has a first flow channel 110, a second flow channel 120, and a connecting flow channel 130. Flow channel 110 allows the medium to flow in, flow channel 220 allows the medium to flow out, and the connecting flow channel 130 connects flow channel 110 and flow channel 220. A sealing surface 131 is provided on the inner wall of the connecting flow channel 130 near flow channel 220. The locking cap 200 is detachably connected to the body 100 and blocks the upper end of the connecting flow channel 130. The valve stem 300 is slidably disposed within the connecting flow channel 130. It has a first sealing part 311 and a second sealing part 321. The first sealing part 311 blocks the lower end of the connecting channel 130. A pre-tightening member 132 is provided in the connecting channel 130. The pre-tightening member 132 applies a pre-tightening force to the valve stem 300 in a direction away from the locking cap 200, so that the second sealing part 321 abuts against the sealing surface 131, thereby dividing the connecting channel 130 into upper and lower parts. The lever 400 is hinged to the body 100. The glass 1 can abut against the lever 400. When the glass 1 pushes the lever 400 to rotate around the hinge point, the lever 400 can drive the valve stem 300 to slide, thereby opening the beer tap. In this embodiment, the preload 132 can be a compression spring or two magnetic blocks. When a compression spring is used, one end of the compression spring abuts against the valve stem 300, and the other end of the compression spring abuts against the locking cap 200. When a magnetic block is used, one magnetic block is set on the valve stem 300, and the other magnetic block is set on the locking cap 200. The magnetic force between the two magnetic blocks is a repulsive force. Both methods can provide a preload force to the valve stem 300 in a direction away from the locking cap 200.

[0055] Valve stem 300 includes piston 310 and guide rod 320, with piston 310 connected to guide rod 320, such as... Figure 8As shown, depending on actual needs, the piston 310 and the guide rod 320 can be fixedly connected or integrally formed; the outer wall of the piston 310 has a relief groove 312 that communicates with the connecting channel 130, and the relief groove 312 can communicate with the second channel; the first sealing part 311 is disposed on the piston 310, and the first sealing part 311 can slide in the connecting channel 130; to increase the sealing performance of the first sealing part 311, a sealing ring can be provided between the first sealing part 311 and the connecting channel 130; the second sealing part 321 is disposed between the piston 310 and the guide rod 320, and the sealing surface 131 can limit the second sealing part 321; in this embodiment, the second sealing part 321 can be a rubber material with elastic deformation properties such as a sealing gasket or a sealing ring.

[0056] In this embodiment, the piston 310 and the guide rod 320 are detachably connected by snap-fit ​​or threaded connection. The lower end of the guide rod 320 is provided with a flange 322. The flange 322 cooperates with the piston 310 to axially limit the sealing part 321. That is, the flange 322 and the piston 310 cooperate to clamp the sealing part 321, and the flange 322 can prevent the sealing part 321 from folding upward or displacing.

[0057] The lever 400 has a lever block 410 on the side near the valve stem 300. The lever block 410 can abut against the lower end of the valve stem 300. The lower end of the lever 400 is provided with a cup holder 420, which is arc-shaped and adapted to the outer wall of the wine glass 1.

[0058] The main body 100 is connected to a wine outlet pipe 140 that connects to the second flow channel 120. Preferably, the wine outlet pipe 140 is rotatably connected to the main body 100, allowing the wine outlet pipe 140 to rotate about the central axis of the second flow channel 120. The locking cap 200 has a through hole 210 that connects the upper part of the connecting flow channel 130 to the outside. A linkage component 500 is provided in the upper part of the connecting flow channel 130. The linkage component 500 can move with the valve stem 300 and seal and open the through hole 210.

[0059] The linkage assembly 500 includes a plug 510 and a reset member 520. The plug 510 is slidably connected to the guide rod 320. There is a reserved gap 530 between the plug 510 and the lock cap 200. The reset member 520 is located between the plug 510 and the valve stem 300, and the reset member 520 applies a force to the plug 510 in the direction of the lock cap 200. The reset component 520 can use either a spring or two magnetic blocks. When using a spring, one end of the spring is pressed against the plug 510, and the other end is pressed against the guide rod 320. When using magnetic blocks, one magnetic block is placed on the plug 510, and the other magnetic block is placed on the guide rod 320, with the magnetic force between the two magnetic blocks being a repulsive force. The scheme of the reset component 520 can be reasonably adjusted according to the actual scheme of the pre-tightening component 132. For example, when the pre-tightening component 132 uses magnetic blocks, it is best to use a spring for the reset component 520 to avoid interference between multiple magnetic blocks. It should be noted that when the reset component 520 is in the fully open state, there is still a reserved gap 530 between the plug 510 and the locking cap 200.

[0060] The lower end of the plug 510 has a groove 511 that matches the guide rod 320. The groove 511 slides and engages with the guide rod 320, and there is a clearance 512 between the groove 511 and the valve stem 300. Alternatively, the groove 511 can also be formed on the valve stem 300. Correspondingly, a guide rod that slides and engages with the groove 511 can be provided at the lower end of the plug 510. As long as the plug 510 can slide normally and the clearance 512 is maintained, the sliding method of the plug 510 can be freely selected.

[0061] The plug 510 and the lock cap 200 are sealed by a seal 540. Specifically, a sealing groove 513 can be made on the upper end of the plug 510 or the inner wall of the lock cap 200, and the seal 540 is installed in the sealing groove 513, so that the sealing groove 513 and the seal 540 are interference fit. The seal 540 can be a conventional sealing ring or a rubber block, or the plug 510 can be made of rubber with elastic deformation properties, thus omitting the seal 540.

[0062] This beer tap also includes an adjustment component 600 disposed on the main body 100, which can adjust the flow rate of the medium entering the flow channel 110.

[0063] The main body 100 is connected to a connecting pipe 150 that connects to the flow channel 110; the adjustment assembly 600 includes an adjustment plug 610 and an adjustment shaft 620. The adjustment plug 610 is disposed inside the connecting pipe 150. The adjustment plug 610 is conical, and its outer wall is adapted to the inner wall of the connecting pipe 150. A connecting groove 611 is provided on the adjustment plug 610. The main body 100 is provided with an assembly hole 160 that connects to the flow channel 110. The assembly hole 160 is close to the adjustment plug 610. The adjustment shaft 620 is rotatably disposed inside the assembly hole 160. The inner end of the adjustment shaft 620 has an eccentric protrusion 621. The eccentric protrusion 621 is eccentrically disposed and connected to the connecting groove 611. The adjustment shaft 620 can drive the adjustment plug 610 to slide inside the connecting pipe 150.

[0064] Furthermore, the adjustment assembly 600 also includes a dial 630 and a knob 640. The dial 630 is connected to the body 100 and has a gear position indicator 631. The knob 640 is connected to the adjustment shaft 620 by adhesive or bolts. The knob 640 is provided with an indicator 641 pointing to the gear position indicator 631. The indicator 641 is used to indicate the current gear position of the adjustment plug 610. The indicator 641 can be an arrow or a straight line, and the gear position indicator 631 can be a number, letter, or graphic. The gear position corresponds to the current position of the regulating plug 610 within the connecting pipe 150. The closer the regulating plug 610 is to the main body 100, the higher the gear position, the larger the distance between the regulating plug 610 and the wall of the connecting pipe 150, and the maximum flow rate of the medium entering the flow channel 110. Conversely, the farther the regulating plug 610 is from the main body 100, the lower the gear position, the smaller the distance between the regulating plug 610 and the wall of the connecting pipe 150, and the smaller the flow rate of the medium entering the flow channel 110. In this embodiment, different gear positions correspond to different flow rates, with higher gear positions corresponding to higher flow rates and lower gear positions corresponding to lower flow rates. Alternatively, the gear position order can be reversed according to actual needs, so that higher gear positions correspond to lower flow rates.

[0065] Working principle:

[0066] When the keg of beer is connected to the connecting pipe 150, since the beer tap is closed, the pre-tightening member 132 will continuously apply a pre-tightening force to the valve stem 300 in a direction away from the locking cap 200. The second sealing part 321 is pressed against the sealing surface 131. At this time, the connecting channel 130 is divided into upper and lower parts by the second sealing part 321. The medium (beer or beverage) in the connecting pipe 150 can only enter the lower half of the connecting channel 130 through the first channel 110. The upper half of the connecting channel 130 is connected to the beer outlet pipe 140.

[0067] The operator holds the wine glass 1 against the glass holder 420 with one hand, inserting the wine tube 140 into the wine glass 1, with the lower end of the wine tube 140 close to the inner wall of the wine glass 1. Then, the operator pushes the wine glass 1 towards the body 100, causing the lever 400 to drive the valve stem 300 to slide upward, so that the sealing part 321 moves upward and disengages from the sealing surface 131. The pre-tightening member 132 is compressed by the valve stem 300, and the reset member 520 and the plug 510 move upward along with the valve stem 300. Finally, the plug 510 seals the through hole 210 and connects the flow. The upper and lower parts of channel 130 are connected. When the beer tap is opened, the medium can sequentially pass through channel one 110, connecting channel 130, clearance groove 312, channel two 120, and beer outlet pipe 140 into the beer glass 1, thus storing beer in the beer glass 1. If the lever 400 is pressed with the beer glass 1, the lever 410 will push the valve stem 300 further upward, so that the sealing part two 321 continues to move away from the sealing surface 131, while the plug 510 is limited by the locking cap 200. When the valve stem 300 continues to move upward, the clearance gap 512 is compressed by the guide rod 320.

[0068] After the beer glass 1 has finished filling, the beer in the beer glass 1 will submerge the lower end of the beer outlet pipe 140. At this time, the pressure applied to the beer glass 1 is released, and the valve stem 300 and the linkage assembly 500 move down under the pre-tightening force of the pre-tightening member 132, so that the sealing part 2 321 re-isolates the connecting flow channel 130. At this time, the beer tap is in the closed state, and the through hole 210 is opened by the plug 510. Outside air can enter the upper end of the connecting flow channel 130 through the through hole 210. Since the height of the second flow channel 120 and the beer outlet pipe 140 is higher than the height of the beer glass 1, the residual beer in the second flow channel 120 and the beer outlet pipe 140 will be discharged into the beer glass 1 due to atmospheric pressure, thereby avoiding the generation of residual beer in the beer outlet pipe 140 and the second flow channel 120.

[0069] During the process of filling the beer glass 1, if the flow rate of the medium discharged from the beer outlet pipe 140 is too low, the knob 640 can be turned counterclockwise to increase the medium flow rate level. Specifically, the adjusting shaft 620 and the indicator 641 will rotate synchronously with the knob 640, while the level indicator 631 will remain stationary. When the indicator 641 points to the higher level, it means that the adjusting plug 610 is closer to the body 100, the gap between the outer wall of the adjusting plug 610 and the wall of the connecting pipe 150 increases, and the flow rate of the medium entering the flow channel 110 increases accordingly. Conversely, if the medium flow rate of this beer tap is too high, the knob 640 can be turned in the opposite direction to decrease the medium flow rate level, so that the flow rate of the medium entering the flow channel 110 decreases until the medium flow rate discharged from the beer outlet pipe 140 reaches the state required by the operator. After the knob 640 stops rotating, the knob 640 will remain at the current level.

[0070] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A beer tap, characterised in that: The beer tap comprises a body (100), a lock cap (200), a valve rod (300) and a lever (400), the body (100) is provided with a flow channel I (110), a flow channel II (120) and a connecting flow channel (130) therein, the connecting flow channel (130) communicates the flow channel I (110) and the flow channel II (120), the connecting flow channel (130) is provided with a sealing surface (131) therein, the lock cap (200) is connected to the body (100) and blocks the upper end of the connecting flow channel (130); the valve rod (300) is slidingly arranged in the connecting flow channel (130), the valve rod (300) is provided with a sealing part I (311) and a sealing part II (321), the sealing part I (311) blocks the lower end of the connecting flow channel (130); the connecting flow channel (130) is provided with a pre-tightening part (132), the pre-tightening part (132) applies a pre-tightening force to the valve rod (300), so that the sealing part II (321) is tightly abutted against the sealing surface (131); the lever (400) is hingedly connected to the body (100), when a wine cup (1) pushes the lever (400) to rotate, the lever (400) can drive the valve rod (300) to slide; the body (100) is connected with a wine outlet pipe (140) which communicates with the flow channel II (120), the lock cap (200) is provided with a through hole (210), the through hole (210) communicates the connecting flow channel (130) with the outside; the connecting flow channel (130) is provided with a linkage assembly (500), the linkage assembly (500) can move with the valve rod (300) and seal and open the through hole (210); the linkage assembly (500) comprises a plug (510) and a reset part (520), the plug (510) is slidingly connected with the valve rod (300), the reset part (520) is arranged between the plug (510) and the valve rod (300), and the reset part (520) applies a force to the plug (510) in the direction of the lock cap (200), the plug (510) and the lock cap (200) have a reserved gap (530) therebetween; the plug (510) is provided with a sliding groove (511) at the lower end thereof, the sliding groove (511) is slidingly matched with the valve rod (300), and the sliding groove (511) and the valve rod (300) have a clearance gap (512) therebetween.

2. A beer tap as claimed in claim 1, characterised in that: The valve rod (300) comprises a piston (310) and a guide rod (320), the piston (310) has a clearance groove (312) on its outer wall, the clearance groove (312) is communicated with the connecting flow channel (130), the sealing part I (311) is arranged on the piston (310), and the sealing part I (311) can slide in the connecting flow channel (130); the sealing part II (321) is arranged between the piston (310) and the guide rod (320), and the sealing surface (131) can limit the sealing part II (321).

3. A beer tap as claimed in claim 2, characterised in that: The piston (310) is detachably connected with the guide rod (320), the lower end of the guide rod (320) is provided with a flange (322), and the flange (322) cooperates with the piston (310) to axially limit the sealing part II (321).

4. The beer tap of claim 1, wherein: The wine outlet pipe (140) is rotationally connected with the body (100).

5. The beer tap of claim 1, wherein: The plug (510) and the lock cap (200) are sealed by a sealing element (540).

6. A beer tap according to any one of claims 1-5, characterised in that: The beer tap further comprises an adjusting assembly (600) arranged on the body (100), and the adjusting assembly (600) can adjust the flow of the medium into the flow channel I (110).

7. A beer tap as defined in claim 6, characterized in that: The body (100) is connected with a connecting pipe (150) communicated with the flow channel I (110); the adjusting assembly (600) comprises an adjusting plug (610) and an adjusting shaft (620), the adjusting plug (610) is arranged in the connecting pipe (150), the outer wall of the adjusting plug (610) is matched with the inner wall of the connecting pipe (150), and the adjusting plug (610) is provided with a connecting groove (611); the body (100) is provided with an assembly hole (160) communicated with the flow channel I (110), the adjusting shaft (620) is rotationally arranged in the assembly hole (160), the inner end of the adjusting shaft (620) is provided with an eccentric protrusion (621) matched with the connecting groove (611), and the adjusting shaft (620) can drive the adjusting plug (610) to slide in the connecting pipe (150).

8. A beer tap as defined in claim 7, characterized in that: The adjusting assembly (600) further comprises a scale disc (630) and a knob (640), the scale disc (630) is connected with the body (100), the scale disc (630) is provided with a gear position mark (631), the knob (640) is connected with the adjusting shaft (620), the knob (640) is provided with an indication mark (641) pointing to the gear position mark (631), and the indication mark (641) can indicate the current gear position of the adjusting plug (610).

9. A beer tap according to any one of claims 1-5, characterised in that: The push rod (400) is provided with a push block (410) on the side close to the valve rod (300), the push block (410) can abut against the lower end of the valve rod (300), and the lower end of the push rod (400) is provided with a cup holder (420).

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