A type of wine spear

Abstract

This invention provides a wine spear, belonging to the technical field of beverage drinking equipment. It solves the problem of insufficient structural stability in existing plastic wine spears. This wine spear includes a valve body, a wine bag connector, and a wine outlet tube connected to the valve body. The wine bag connector has a cylindrical main body, a cylindrical insertion part located inside the main body and concentrically arranged with it, and an annular connecting part surrounding the main body. The outer wall of the main body has a snap-fit ​​part, through which the main body is snapped into the valve body. An annular insertion groove is formed between the insertion part and the main body. The insertion part is inserted into the lower end of the wine outlet tube, and the lower end of the wine outlet tube extends into the insertion groove. The wine outlet tube can restrict the radial contraction of the main body. An elastic tensioning sleeve is also provided in the insertion groove, clamping the wine outlet tube between the side wall of the insertion groove and the insertion groove. This invention has the advantage of structural stability, greatly improving the installation stability of the wine bag connector.

Description

Technical Field

[0001] This invention belongs to the technical field of beverage drinking equipment, and relates to a wine spear. Background Technology

[0002] A barrel is a container for holding liquid liquor. Typically, a spout is installed at the mouth of the barrel, which works in conjunction with a dispenser to expel the liquor from the barrel. Traditionally, barrels are made of metal, and the corresponding spouts are also typically metal. While this structure is stable, it is expensive and difficult to clean. Most manufacturers lack specialized cleaning equipment for metal barrels and spouts. Therefore, after the liquor in the barrel is used up, the empty barrel needs to be transported to the manufacturer for cleaning, increasing transportation costs.

[0003] With the development of beverage drinking equipment, plastic wine spears have emerged in the market. Plastic wine spears are not only inexpensive to manufacture, but also reduce operating costs because they are disposable, avoiding the hassle of cleaning. They are also cleaner and more hygienic to use. However, due to the characteristics of plastic materials, ensuring the structural stability of plastic wine spears is a key issue that manufacturers need to address.

[0004] The existing structure of a plastic wine spear is as disclosed in a patent document (application number: 201610792379.3). This wine spear includes a valve body and a seat. A base frame is fixedly connected to the lower end of the valve body. The wine outlet pipe passes through the base frame and is fixedly connected to the base frame. A wine bag connector is sleeved on the base frame, and a flexible bag is fixedly connected to the wine bag connector. The seat is slidably sleeved on the upper end of the wine outlet pipe. A return spring is provided between the valve body and the seat to allow the seat to abut against the inner wall of the valve body. The following shortcomings exist in the use of this wine spear: In this structure, the wine bag connector is engaged with the locking groove on the base frame via a locking protrusion. In order for the wine bag connector to be fitted onto the base frame, the locking depth between the locking groove and the locking protrusion cannot be too deep. This places high demands on the manufacturing precision and fitting precision of the wine bag connector and the base frame. During the use or handling of the wine barrel, the shaking of the wine inside the flexible bag will cause a certain amount of pulling on the wine bag connector, which may cause the wine bag connector to fall off, affecting the normal use of the wine barrel. Therefore, the wine spear has a problem of insufficient structural stability. In addition, the wine outlet tube in the wine spear is engaged with the locking protrusion on the base frame via a locking groove, so that the wine outlet tube is fixed to the base frame. Similarly, the engagement depth of the locking groove on the dispensing tube and the locking protrusion on the base frame should not be too deep to ensure that the dispensing tube can be inserted into the base frame for locking and fixing. However, due to the temperature change of the liquid inside the dispensing tube, when the cooled liquid flows inside the dispensing tube, the plastic dispensing tube will shrink and deform, which may lead to the dispensing tube loosening or even detaching from the base frame, further reducing the stability of the dispensing spear structure.

[0005] Currently, the conventional technical approach to address the insufficient stability of existing wine spear structures is as follows:

[0006] 1. Structurally, the components such as the wine outlet pipe and base frame are reinforced with reinforcing ribs to alleviate the deformation of plastic parts.

[0007] 2. In terms of installation, threaded connections and bolt connections are used instead of snap-fit ​​structures, which makes the connection between the plastic parts of the spear more stable and avoids the problem of snap-fit ​​parts loosening due to thermal expansion and contraction.

[0008] 3. Add materials that can mitigate plastic deformation in the manufacturing process. For example, add toughening agents to the materials used to manufacture the wine spear. By mixing the toughening agents with the resin, the impact strength and toughness of the plastic parts of the wine spear can be improved, mitigating the phenomenon of thermal expansion and contraction of the wine outlet tube and ensuring that the wine outlet tube can always be stably connected to the base frame.

[0009] 4. Use the equipment properly and take heat insulation measures during use. Limit the environment in which the barrel is used, such as avoiding direct sunlight and controlling the temperature of the storage area to avoid excessively high or low temperatures, in order to reduce the deformation of the plastic parts of the barrel. Summary of the Invention

[0010] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a wine spear, which solves the problem of insufficient structural stability in existing plastic wine spears.

[0011] The objective of this invention can be achieved through the following technical solution: A wine spear, comprising a valve body, a wine bag connector, and a wine outlet tube connected to the valve body, characterized in that the wine bag connector has a cylindrical main body, a cylindrical insertion part located inside the main body and concentrically arranged with the main body, and an annular connecting part arranged around the main body; the outer wall of the main body has a snap-fit ​​part, and the main body is snap-fitted to the valve body through the snap-fit ​​part; an annular insertion groove is formed between the insertion part and the main body; the insertion part is inserted into the lower end of the wine outlet tube, and the lower end of the wine outlet tube extends into the insertion groove; the wine outlet tube can restrict the radial contraction of the main body; and an elastic tensioning sleeve is also provided in the insertion groove, clamping the wine outlet tube between the side wall of the insertion groove and the insertion groove.

[0012] This wine spear is installed at the mouth of a wine barrel. Inside the barrel, there is a wine bag for storing the wine. The connector on the wine bag is used to seal the wine bag opening.

[0013] In this wine spout, the wine bag connector has a concentrically arranged main body and a plug-in part. The plug-in part and the main body form an annular plug-in groove. Based on this structure, by inserting the lower end of the wine outlet tube into the plug-in groove and placing an elastic tension sleeve in the plug-in groove, the tension sleeve deforms due to being clamped by the side wall of the plug-in groove, thus generating a large pre-tightening force. This allows the wine bag connector to form a stable connection with the wine outlet tube with the help of the tension sleeve. After the wine bag connector is installed, it can achieve "external fixation" by engaging with the valve body through the snap-fit ​​part, and "internal fixation" by the pre-tightening force of the tension sleeve. This provides the wine outlet connector with a double fixation effect, greatly improving the installation stability of the wine bag connector. Especially when the wine inside the wine bag is shaking, it can effectively limit the wine bag connector to prevent tilting or displacement, thus greatly improving the installation stability of the wine bag connector.

[0014] Furthermore, the main body of this wine spear is connected to the valve body via a snap-fit ​​part on its outer wall. The lower end of the wine outlet tube extends into the insertion groove, restricting the radial contraction of the main body. This prevents the main body from contracting radially or excessively due to temperature variations, thus avoiding the snap-fit ​​part from detaching from the valve body. Therefore, the structure of this wine spear ensures that the snap-fit ​​part remains firmly engaged with the valve body, further enhancing the installation stability of the wine bag connector.

[0015] In the aforementioned beer spear, the tension sleeve is fitted onto the insertion part and abuts against the inner wall of the dispensing pipe. Because the insertion part and the tension sleeve are inserted into the dispensing pipe, the elastic tension sleeve is compressed during installation, thus providing internal support for the dispensing pipe. This prevents the lower end of the dispensing pipe from contracting and deforming when cooled beer flows through it, effectively limiting radial contraction of the main body and ensuring a stable connection between the snap-fit ​​part and the valve body. This significantly improves the installation stability of the beer bag connector and ultimately enhances the structural stability of the beer spear.

[0016] In the aforementioned wine spear, the lower end of the tensioning sleeve has a radially outward-flaring annular flange, which clamps between the lower end face of the wine outlet tube and the bottom of the insertion groove. The annular flange is part of the tensioning sleeve and therefore has elasticity. When clamped between the lower end face of the wine outlet tube and the bottom of the insertion groove, the annular flange deforms. On one hand, the deformed annular flange tends to recover, thus generating a downward force pushing the wine bag connector, ensuring that the snap-fit ​​flange on the wine bag connector always engages well with the valve body, preventing the wine bag connector from loosening and improving the stability of the wine bag connector installation. On the other hand, by setting the annular flange, the sealing effect between the tensioning sleeve and the wine bag connector, as well as between the tensioning sleeve and the wine outlet tube, is increased, thereby preventing wine leakage from the wine outlet tube.

[0017] In the aforementioned wine spear, the outer wall of the tensioning sleeve is provided with at least two annular protrusions along the circumferential direction. These annular protrusions are spaced apart sequentially along the axial direction of the tensioning sleeve. The tensioning sleeve abuts against the inner wall of the wine outlet pipe through these annular protrusions. The outer wall of the wine outlet pipe abuts against or has a slight gap with the inner wall of the main body. Preferably, the annular protrusions have an arc-shaped cross-section, and there are two annular protrusions. During the insertion of the spigot into the outlet tube, the tensioning sleeve on the spigot contacts the inner wall of the outlet tube via an annular protrusion. The annular protrusion can undergo significant deformation, ensuring that after the spigot is inserted, the annular protrusion can tightly abut against the inner wall of the outlet tube. This not only improves the sealing effect between the tensioning sleeve and the outlet tube, preventing leakage of wine from between them, but also ensures that the outlet tube is well supported by the spigot and the tensioning sleeve without shrinking or deforming. Consequently, the outlet tube can effectively limit the radial shrinkage of the main body, ensuring that the snap-fit ​​part on the wine bag connector can always be securely snapped onto the valve body.

[0018] In the aforementioned wine spear, an annular locking groove is circumferentially formed on the outer wall of the wine outlet pipe. The valve body has several claws arranged around the wine outlet pipe, each claw engaging within the annular locking groove. The annular locking groove and the annular protrusion on the tensioning sleeve are arranged radially inward and outward relative to each other along the wine outlet pipe. This design ensures that, under the inner support of the annular protrusion, the portion of the wine outlet pipe with the annular locking groove is less prone to shrinkage and deformation, allowing the claws to remain firmly engaged within the annular locking groove. This effectively prevents the wine outlet pipe from loosening at the valve body connection, thus ensuring the stability of the wine outlet pipe installation.

[0019] In the aforementioned wine spout, the locking part is an annular locking flange arranged circumferentially on the outer side wall of the main body. The valve body has several locking tongues arranged around the main body, and the locking part engages with each locking tongue so that each locking tongue supports the locking part. By having several locking tongues arranged around the main body engage with the locking part, all positions of the main body in the circumferential direction can be supported and positioned by the locking tongues, thereby greatly improving the installation stability of the wine bag connector.

[0020] In the aforementioned wine spear, the main body is cylindrical, with a flared section at the upper end having a large inner diameter. An annular boss is circumferentially positioned below the annular locking groove on the outer wall of the wine outlet tube. The upper side of the annular boss abuts against the locking claw, and the annular boss is located within the flared section. The annular boss, by abutting against the locking claw, allows the lower end of the locking claw to abut against a locking surface with a relatively large width, effectively preventing the locking claw from detaching from the annular locking groove and providing better installation stability for the wine outlet tube. The flared section at the upper end of the main body provides clearance for the annular boss, facilitating its formation on the wine outlet tube.

[0021] In the aforementioned wine spear, the valve body includes an outer shell and a mounting sleeve disposed within the outer shell. The mounting sleeve includes a cylindrical body with several extensions spaced apart circumferentially at its lower end. A vent is formed between each pair of adjacent extensions. Each extension has an integrally formed support arm, and each support arm has a claw. Each support arm is connected to the body via an extension, ensuring good connection stability. Simultaneously, the vents between adjacent extensions ensure the design requirements of the wine spear's air path, allowing gas from the distributor to enter the wine spear to pass through the vents and enter the wine barrel, generating high pressure and forcing the wine out of the barrel. During the process of inserting and fixing the wine pipe onto the valve body, both the claw and the support arm undergo some deformation. Therefore, after insertion and fixing, the support arm tends to return to its original shape, thus firmly pressing the claw into the annular locking groove, greatly improving the installation stability of the wine pipe.

[0022] In the aforementioned wine spear, one end of the extension is connected to the lower port edge of the main body, and this end is the outer end of the extension. The other end is the inner end of the extension. The support arm is vertically arranged, and its lower end is connected to the inner end of the extension. The claw is located at the upper end of the support arm, and any two adjacent claws are connected as a single unit. A latch is integrally formed between the lower ends of any two adjacent support arms. The claw is connected to the upper end of the support arm, raising the height of the claw so that the claw and the annular locking groove are spaced a distance from the lower end of the wine outlet tube. This facilitates the insertion and positioning of the lower end of the wine outlet tube into the insertion groove on the wine bag connector. Furthermore, the wine outlet tube restricts the radial contraction of the main body of the wine bag connector, thereby preventing the locking part from detaching from the valve body due to radial contraction and ensuring the installation stability of the wine bag connector.

[0023] In the aforementioned wine spear, the tensioning sleeve is made of rubber. The lower end of the main body and the lower end of the insertion part are connected by a transition part. A cylindrical mounting part is integrally formed on the lower side of the transition part. The mounting part is concentrically arranged with the insertion part, and a drainage tube is inserted into the mounting part. By setting the mounting part, it is easy to connect the drainage tube to the wine bag connector, while ensuring the installation stability of the drainage tube. After high-pressure gas is injected into the wine barrel to compress the wine bag, the wine inside the wine bag can flow upward through the drainage tube to the wine outlet pipe, and then flow out from the wine outlet pipe. Therefore, the setting of the drainage tube facilitates the smooth flow of wine from the wine bag and avoids the residue of wine inside the wine bag.

[0024] Compared with existing technologies, this wine spear has the following advantages:

[0025] 1. The wine bag connector is equipped with a tensioning sleeve. The tensioning sleeve deforms due to being clamped between the wine outlet pipe and the insertion part, thus generating a large pre-tightening force. This allows the wine bag connector to form a stable connection with the wine outlet pipe with the help of the tensioning sleeve. This enables the wine outlet connector to achieve "external fixation" through the snap-fit ​​connection between the snap-fit ​​part and the valve body, and "internal fixation" through the pre-tightening force of the tensioning sleeve, thereby greatly improving the installation stability of the wine bag connector.

[0026] 2. The tensioning sleeve provides internal support for the beer outlet pipe, so that when cooled beer flows through the outlet pipe, the lower end of the outlet pipe is unlikely to shrink or deform. This ensures that the outlet pipe can always effectively limit the radial shrinkage of the main body and guarantee a stable connection between the snap-fit ​​part on the main body and the valve body. Attached Figure Description

[0027] Figure 1 This is a diagram showing the wine spear installed on a wine barrel.

[0028] Figure 2 This is a cross-sectional view of the wine spear.

[0029] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0030] Figure 4 This is a sectional view of the wine spear in rotation.

[0031] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0032] Figure 6 This is a three-dimensional structural diagram of the wine bag connector in this wine spear.

[0033] Figure 7 This is a three-dimensional structural diagram of the sleeve installed in this wine spear.

[0034] Figure 8 This is a three-dimensional structural diagram of the sleeve installed in this wine spear from another perspective.

[0035] Figure 9 This is a cross-sectional view of Embodiment 2 of this wine spear.

[0036] In the diagram, 1. Valve body; 1a. Outer shell; 1b. Mounting sleeve; 1b1. Body; 1b2. Extension; 1b3. Vent hole; 1b4. Support arm; 1b5. Claw; 1b6. Claw tongue; 2. Wine bag connector; 21. Main body; 211. Snap-fit ​​part; 212. Flared part; 22. Insertion part; 23. Connecting part; 24. Insertion groove; 25. Transition part; 26. Mounting part; 3. Wine outlet pipe; 31. Annular snap-fit ​​groove; 32. Annular boss; 4. Tensioning sleeve; 41. Annular flange; 42. Annular protrusion; 5. Drain pipe; 6. Pressure cap; 7. Drain band; 8. Sealing assembly; 9. Wine barrel; 10. Wine bag. Detailed Implementation

[0037] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0038] Example 1

[0039] like Figure 1 river Figure 2 As shown, the wine spear includes a valve body 1, a wine bag connector 2, and a wine outlet pipe 3 connected to the valve body 1. A drainage band 7 is connected to the bottom surface of the wine bag connector 2. The drainage band 7 is existing technology, and its surface has several strip-shaped grooves arranged along its length. The drainage grooves on the drainage band 7 allow the wine to flow through, thus facilitating the smooth outflow of the wine from the wine bag 10 and preventing any residue from remaining in the wine bag 10. A wine bag 10 for storing the wine is connected to the wine bag connector 2 inside the wine barrel 9. A sealing component 8 is provided at the upper end of the wine outlet pipe 3. The valve body 1 includes an outer shell 1a and an mounting sleeve 1b disposed within the outer shell 1a. The outer shell 1a is inserted and fixed inside the mouth of the wine barrel 9. A pressure cap 6 is also threaded onto the mouth of the wine barrel 9 to press the outer shell 1a downwards. When the dispenser is connected to the wine spear, the dispenser presses down on the sealing component 8 and moves the sealing component 8 downwards by a certain stroke, which opens the gas passage and liquid passage of the wine spear. At this time, the outside gas can enter the wine barrel 9 through the gas passage, which generates high pressure in the wine barrel 9 and compresses the wine bag 10. The wine in the wine bag 10 can then flow outwards from the wine outlet pipe 3 to the dispenser under the guidance of the flow guide belt 7, and then flow from the dispenser to the tap for people to drink.

[0040] Further, such as Figure 3 , Figure 4 and Figure 5As shown, the wine bag connector 2 has a cylindrical body 21, a cylindrical insertion part 22 located inside the body 21 and concentrically arranged with the body 21, and an annular connecting part 23 arranged around the body 21. The function of the connecting part 23 on the wine bag connector 2 is to seal the connection with the mouth of the wine bag 10. The outer wall of the body 21 has a snap-fit ​​part 211, and the body 21 is snap-fitted to the valve body 1 through the snap-fit ​​part 211. An annular insertion groove 24 is formed between the insertion part 22 and the body 21. The insertion part 22 is inserted into the lower end of the wine outlet tube 3, and the lower end of the wine outlet tube 3 extends into the insertion groove 24. The wine outlet tube 3 can restrict the radial contraction of the body 21. An elastic tensioning sleeve 4 is also provided in the insertion groove 24, which is clamped between the wine outlet tube 3 and the side wall of the insertion groove 24. Specifically, the tension sleeve 4 is fitted onto the insertion part 22 and abuts against the inner wall of the wine outlet tube 3. The tension sleeve 4 is made of rubber material and can be fitted onto the insertion part 22 using a plastic coating process or by a tight fit.

[0041] In the above structure, the tensioning sleeve 4 deforms due to being clamped between the beer outlet pipe 3 and the insertion part 22, thus generating a large pre-tightening force. This allows the beer bag connector 2 to form a stable connection with the beer outlet pipe 3 with the help of the tensioning sleeve 4. The beer outlet connector can achieve both "external fixation" through the snap-fit ​​part 211 and the valve body 1, and "internal fixation" through the pre-tightening force of the tensioning sleeve 4, thereby greatly improving the installation stability of the beer bag connector 2. Furthermore, the tensioning sleeve 4 also provides internal support for the beer outlet pipe 3. This prevents the lower end of the beer outlet pipe 3 from shrinking and deforming when cooled beer flows through it, effectively limiting the radial shrinkage of the main body 21 and ensuring a stable connection between the snap-fit ​​part 211 on the main body 21 and the valve body 1. Furthermore, even if the cooled beer flows through the connector 22, causing it to shrink and deform, the tension sleeve 4 remains compressed and presses against the inner wall of the beer outlet pipe 3 after the connector 22 shrinks and deforms. This effectively limits the shrinkage and deformation of the lower end of the beer outlet pipe 3, ensuring that the beer outlet pipe 3 can effectively limit the radial shrinkage of the main body 21 and guarantee a stable connection between the snap-fit ​​part 211 on the main body 21 and the valve body 1, thereby greatly improving the installation stability of the beer bag connector 2.

[0042] like Figure 3 , Figure 5 and Figure 6As shown, the lower end of the tensioning sleeve 4 has a radially outwardly turned annular flange 41, which clamps between the lower end face of the wine outlet pipe 3 and the bottom of the insertion groove 24. At least two annular protrusions 42 are provided circumferentially on the outer wall of the tensioning sleeve 4. These annular protrusions 42 are spaced apart sequentially along the axial direction of the tensioning sleeve 4. The tensioning sleeve 4 abuts against the inner wall of the wine outlet pipe 3 through these annular protrusions 42. The outer wall of the wine outlet pipe 3 abuts against or has a slight gap with the inner wall of the main body 21. An annular locking groove 31 is provided circumferentially on the outer wall of the wine outlet pipe 3. The valve body 1 has several claws 1b5 arranged around the wine outlet pipe 3. Each claw 1b5 is engaged within the annular locking groove 31. The annular locking groove 31 and the annular protrusions 42 on the tensioning sleeve 4 are arranged radially inward and outward relative to each other along the wine outlet pipe 3. This design ensures that the part of the wine outlet pipe 3 with the annular locking groove 31 is not prone to shrinkage and deformation under the internal support of the annular protrusion 42, so that the claw 1b5 can always be stably locked in the annular locking groove 31, effectively preventing the wine outlet pipe 3 from becoming loose from the locking part 211 of the valve body 1, thereby ensuring the stability of the installation of the wine outlet pipe 3.

[0043] like Figure 5 , Figure 6 and Figure 7 As shown, the snap-fit ​​part 211 is an annular snap-fit ​​flange arranged circumferentially on the outer side wall of the main body 21. The snap-fit ​​flange is integrally formed on the upper end of the main body 21, and the lower end of the main body 21 is integrally formed with a connecting part 23. The lower end of the main body 21 is connected to the lower end of the insertion part 22 through a transition part 25. The valve body 1 has a plurality of latches 1b6 arranged around the main body 21. The snap-fit ​​part 211 snaps into each latch 1b6 so that each latch 1b6 supports the snap-fit ​​part 211. By having a plurality of latches 1b6 arranged around the main body 21 snap into the snap-fit ​​part 211, all positions of the main body 21 in the circumferential direction can be supported and positioned by the latches 1b6, thereby greatly improving the installation stability of the wine bag connector 2.

[0044] like Figure 3 , Figure 5 and Figure 6 As shown, the main body 21 is cylindrical, and the upper end of the main body 21 has a flared portion 212 with a large inner diameter. An annular boss 32 is provided circumferentially on the outer wall of the wine outlet pipe 3, located below the annular locking groove 31. The upper side of the annular boss 32 abuts against the locking claw 1b5, and the annular boss 32 is located within the flared portion 212. After the annular boss 32 is provided, the upper side of the annular boss 32 abuts against the locking claw 1b5, allowing the lower end of the locking claw 1b5 to abut against a locking surface with a relatively large width. This effectively prevents the locking claw 1b5 from loosening from the annular locking groove 31, resulting in better installation stability for the wine outlet pipe 3.

[0045] like Figure 7 and Figure 8 As shown, the mounting sleeve 1b includes a cylindrical body 1b1. The lower end of the body 1b1 has several extensions 1b2 spaced apart circumferentially along the body 1b1. A vent 1b3 is formed between each pair of adjacent extensions 1b2. A support arm 1b4 is integrally formed on each extension 1b2, and each support arm 1b4 has a claw 1b5. The vent 1b3 formed between adjacent extensions 1b2 ensures the design requirements of the wine spear's air passage, allowing the gas from the distributor entering the wine spear to pass through the vent 1b3 and enter the wine barrel 9, generating high pressure inside the wine barrel 9 and forcing the wine out of the wine barrel 9. One end of the extension 1b2 is connected to the lower port edge of the body 1b1, and this end is the outer end of the extension 1b2. The other end is the inner end of the extension 1b2. The support arm 1b4 is vertically arranged, and its lower end is connected to the inner end of the extension 1b2. The claw 1b5 is located at the upper end of the support arm 1b4. Any two adjacent claws 1b5 are connected as one piece. A latch 1b6 is integrally formed between the lower ends of any two adjacent support arms 1b4. During the process of inserting and fixing the wine outlet pipe 3 onto the valve body 1, both the claw 1b5 and the support arm 1b4 will undergo certain deformation. Therefore, after insertion and fixing, the support arm 1b4 has a tendency to restore its shape, which can then firmly press the claw 1b5 into the annular locking groove 31, thereby greatly improving the installation stability of the wine outlet pipe 3.

[0046] Example 2

[0047] This embodiment is basically the same as embodiment one in structure and principle, except that: Figure 9 As shown, a cylindrical mounting portion 26 is integrally formed on the lower side of the transition portion 25 of the wine bag connector 2. The mounting portion 26 is concentrically arranged with the insertion portion 22, and a drainage tube 5 is inserted into the mounting portion 26. By setting the mounting portion 26, it is easy to connect the drainage tube 5 to the wine bag connector 2, while ensuring the installation stability of the drainage tube 5. After high-pressure gas is injected into the wine barrel 9 to compress the wine bag 10, the wine in the wine bag 10 can flow upward through the drainage tube 5 to the wine outlet pipe 3, and then flow out from the wine outlet pipe 3. Therefore, the setting of the drainage tube 5 can facilitate the smooth flow of the wine in the wine bag 10 and avoid the residue of wine in the wine bag 10.

[0048] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0049] Although this document frequently uses terms such as 1. valve body; 1a. outer shell; 1b. mounting sleeve; 1b1. main body; 1b2. extension; 1b3. vent; 1b4. support arm; 1b5. claw; 1b6. latch; 2. wine bag connector; 21. main body; 211. snap-fit ​​part; 212. flared part; 22. insertion part; 23. connecting part; 24. insertion groove; 25. transition part; 26. mounting part; 3. wine outlet pipe; 31. annular snap-fit ​​groove; 32. annular boss; 4. tension sleeve; 41. annular flange; 42. annular protrusion; 5. drainage pipe; 6. pressure cap; 7. drainage band; 8. sealing assembly; 9. wine barrel; 10. wine bag, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A wine spear, comprising a valve body (1), a wine bag connector (2), and a wine outlet pipe (3) connected to the valve body (1), characterized in that, The wine bag connector (2) has a cylindrical body (21), a cylindrical insertion part (22) located inside the body (21) and concentrically arranged with the body (21), and an annular connecting part (23) arranged around the body (21). The outer side wall of the body (21) has a snap-fit ​​part (211) and the body (21) is snap-fitted to the valve body (1) through the snap-fit ​​part (211). An annular insertion groove (24) is formed between the insertion part (22) and the body (21). The insertion part (22) is inserted into the lower end of the wine outlet tube (3) and the lower end of the wine outlet tube (3) extends into the insertion groove (24). The wine outlet tube (3) can restrict the radial contraction of the body (21). An elastic tensioning sleeve (4) is also provided in the insertion groove (24) and clamped between the side wall of the wine outlet tube (3) and the insertion groove (24).

2. The wine spear according to claim 1, characterized in that, The tension sleeve (4) is fitted onto the insertion part (22) and the tension sleeve (4) abuts against the inner wall of the wine outlet pipe (3).

3. The wine spear according to claim 2, characterized in that, The lower end of the tensioning sleeve (4) has a radially outwardly flared annular flange (41), which is clamped between the lower end face of the wine outlet pipe (3) and the bottom of the insertion groove (24).

4. The wine spear according to claim 2 or 3, characterized in that, The outer side wall of the tension sleeve (4) is provided with at least two annular protrusions (42) along the circumferential direction. Each annular protrusion (42) is arranged sequentially at intervals along the axial direction of the tension sleeve (4). The tension sleeve (4) is tightly fitted with the inner side wall of the wine outlet pipe (3) through each annular protrusion (42). The outer side wall of the wine outlet pipe (3) abuts against the inner side wall of the main body (21) or has a slight gap.

5. The wine spear according to claim 4, characterized in that, An annular snap-fit ​​groove (31) is provided on the outer side wall of the wine outlet pipe (3) along the circumferential direction. The valve body (1) has several claws (1b5) arranged around the wine outlet pipe (3). Each claw (1b5) is snapped into the annular snap-fit ​​groove (31). The annular snap-fit ​​groove (31) and the annular protrusion (42) on the tension sleeve (4) are arranged opposite to each other radially inside and outside the wine outlet pipe (3).

6. The wine spear according to claim 5, characterized in that, The locking part (211) is an annular locking flange arranged circumferentially on the outer side wall of the main body (21). The valve body (1) has a number of latches (1b6) arranged around the main body (21). The locking part (211) engages with each latch (1b6) so that each latch (1b6) supports the locking part (211).

7. The wine spear according to claim 5, characterized in that, The main body (21) is cylindrical, and the upper end of the main body (21) has a flared part (212). The outer side wall of the wine outlet pipe (3) is provided with an annular boss (32) located below the annular snap groove (31) along the circumferential direction. The upper side of the annular boss (32) abuts against the snap claw (1b5), and the annular boss (32) is located inside the flared part (212).

8. The wine spear according to claim 6, characterized in that, The valve body (1) includes an outer shell (1a) and a mounting sleeve (1b) disposed inside the outer shell (1a). The mounting sleeve (1b) includes a cylindrical body (1b1). The lower end of the body (1b1) has a plurality of extensions (1b2) arranged sequentially and spaced apart along the circumference of the body (1b1). A vent hole (1b3) is formed between each pair of adjacent extensions (1b2). A support arm (1b4) is integrally formed on each extension (1b2), and each support arm (1b4) has a claw (1b5).

9. The wine spear according to claim 8, characterized in that, One end of the extension (1b2) is connected to the lower port edge of the body (1b1) and this end is the outer end of the extension (1b2), and the other end is the inner end of the extension (1b2). The support arm (1b4) is vertically arranged and its lower end is connected to the inner end of the extension (1b2). The claw (1b5) is located at the upper end of the support arm (1b4). Any two adjacent claws (1b5) are connected to each other as one unit. A latch (1b6) is integrally formed between the lower ends of any two adjacent support arms (1b4).

10. The wine spear according to claim 1, 2, or 3, characterized in that, The tensioning sleeve (4) is made of rubber material. The lower end of the main body (21) and the lower end of the insertion part (22) are connected by a transition part (25). A cylindrical mounting part (26) is integrally formed on the lower side of the transition part (25). The mounting part (26) and the insertion part (22) are concentrically arranged. A drainage tube (5) is inserted into the mounting part (26).

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