An explosion-proof hydrogen water barrel

Abstract

The present invention discloses an explosion-proof hydrogen water barrel, comprising a barrel body and an inner liner assembly. The inner liner assembly is located in the barrel body, and a lid is sealed and installed at the barrel mouth of the barrel body. The inner liner assembly comprises a flexible bag body and an adapter. The adapter is installed at the lower end of the barrel body, and the flexible bag body is connected to the adapter. The inner cavity of the barrel body is provided with a protrusion, and the top surface of the protrusion is provided with an inclined portion. The bottom surface of the barrel body is provided with a positioning groove at the protrusion, and the lid can be inserted into the positioning groove at the bottom of another barrel body. The pressure relief valve can automatically release pressure, and the barrel body has an explosion-proof function. The hydrogen in the hydrogen-rich water can only accumulate at the upper end of the inner cavity of the flexible bag body, thereby preventing the hydrogen from escaping from the hydrogen-rich water. At the same time, the liquid in the flexible bag body can be completely discharged through the inclined portion, increasing the drainage speed and preventing liquid accumulation and bacterial growth. The barrel body can be stacked up and down, so the stacking height is effectively reduced, which is convenient for storage and transportation. Therefore, it has multiple practical functions and greatly meets the actual use needs of users.

Description

Technical Field

[0001] The invention relates to the technical field of water containers, in particular to an explosion-proof hydrogen water barrel. Background Art

[0002] Nowadays, people often fill hydrogen-rich water into pressure barrels for drinking. For example, patent CN202122064526.4 discloses a pressure barrel for storing hydrogen water, whose main structure is: the pressure barrel cover and the pressure barrel body are sealed together, the pressure barrel body has a built-in replaceable airtight composite water bag and a connecting pipe, the connecting pipe is inserted from the connecting port on the top of the composite water bag, and the lower end is suspended in the composite water bag; the pressure barrel cover is provided with an inlet / outlet, and the upper end of the connecting pipe is sealed with the lower end of the inlet / outlet; although the above-mentioned pressure barrel can realize the storage and drinking of hydrogen-rich water, when the pressure injected into the pressure barrel body is too high, the material of the barrel structure will rupture and explode due to the internal high pressure, thereby threatening the life safety of the user and causing certain property losses; and because hydrogen molecules are unstable in water, the hydrogen molecules in the hydrogen-rich water will escape, and the plastic molecular material of the above-mentioned airtight composite water bag is large, and there are gaps between the molecules, so hydrogen molecules can penetrate The hydrogen-rich water in the pressure barrel has a low concentration of hydrogen and has a low health effect. The pressure barrel cover is provided with an inlet / outlet. The weight of hydrogen is relatively light, and the hydrogen gas released from the hydrogen-rich water is very easy to leak from the inlet / outlet, resulting in a decrease in the concentration of the hydrogen-rich water. After the hydrogen-rich water is pumped out of the connecting pipe, the liquid flows downward by gravity, and hydrogen-rich water is likely to remain in the airtight composite water bag. The residual hydrogen-rich water cannot be discharged for drinking, resulting in a waste of water resources. After a long time, it is easy to breed bacteria. The user drinks it after refilling, which affects the user's health. At the same time, due to the large volume of the pressure barrel body, the barrel body cannot be stacked, which is inconvenient for storage and transportation during production, resulting in a large volume of packaging. Therefore, the above defects are very obvious. For this reason, we propose an explosion-proof hydrogen water barrel to solve the above problems. Summary of the Invention

[0003] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide an explosion-proof hydrogen water barrel.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The lid is provided with a stop valve and a pressure relief valve, and the stop valve is installed at the exposed end of the lid.

[0006] Preferably, a water inlet valve is installed on the cover, a connector connected to the water inlet valve is installed inside the cover, and the flexible bag body is fixed on the connector and connected to the inner hole of the connector.

[0007] Preferably, the connector is installed with a catheter via a quick-insert connector, the other end of the catheter is connected to the lower end of the flexible bag body via a fixed head, and the catheter is communicated with the inner cavity of the flexible bag body via the fixed head.

[0008] Preferably, a socket is installed on the barrel wall of the barrel body, an electric heating device is provided in the flexible bag body, and the socket is electrically connected to the electric heating device through an insulated wire passing through the flexible bag body.

[0009] Preferably, a receiving groove is provided at the lower end of the barrel body, a penetrating positioning hole is provided in the receiving groove, a sealing ring and a gasket are installed on the adapter in sequence, a peripheral side surface of the sealing ring is provided with an annular groove adapted to the positioning hole, the adapter is inserted into the positioning hole so that the annular groove is clamped in the positioning hole, the adapter is screwed into the receiving groove by a nut, and filter cotton is provided in the adapter.

[0010] Preferably, an antibacterial combination filter element is installed in the barrel body and on the adapter through a quick connector, and the antibacterial combination filter element contains PP cotton and / or carbon fiber and / or nano-silver activated carbon particles and / or selenium-containing activated carbon particles and / or strontium-containing activated carbon particles and / or nano-zinc activated carbon particles and / or a combination of silver and zinc ion activated carbon antibacterial materials and / or a combination of strontium and selenium ion activated carbon materials and / or carbon fiber rods and / or particles or rods made of hydrogen-rich ceramics.

[0011] Preferably, a one-way valve is provided in the water inlet of the adapter and the cover, and a thimble that can push open the one-way valve is provided in the water inlet valve and the stop valve.

[0012] Preferably, a float switch is installed on the connector and located in the flexible bag body.

[0013] Preferably, a dust cover is installed on the cover, and the dust cover can be inserted into the positioning groove.

[0014] Preferably, the exposed end of the adapter is screwed with a reducer thread joint connected to the inner cavity of the flexible bag body, and the stop valve is installed on the reducer thread joint.

[0015] Preferably, the exposed opening of the adapter is provided with a sealing film or a sealing cap, a handle is installed on the barrel body, and an anti-slip pad is provided on the bottom surface of the barrel body.

[0016] Due to the adoption of the above solution, the present invention has the following obvious advantages and beneficial effects compared with the prior art:

[0017] 1. During use, air pressure or water pressure can be injected into the barrel through the valve core or adapter. The high pressure in the barrel accelerates the drainage speed. The lid is equipped with a pressure relief valve. Therefore, when the air pressure in the barrel is too high, the pressure relief valve automatically releases the pressure. At the same time, when a pressure switch valve is installed on the adapter, the flexible bag in the barrel is injected through the pressure switch valve and the adapter. When the pressure of the liquid flowing through the pressure switch valve is too high, the pressure switch valve closes, thereby controlling the water pressure injected into the barrel and preventing the barrel from exploding under high pressure. Therefore, it has an anti-explosion function and protects the user's safety.

[0018] 2. The flexible bag is provided with a metal film layer. When hydrogen-rich water is injected into the flexible bag, the metal film with a dense molecular structure makes it difficult for hydrogen to pass through the metal film, thereby effectively preventing the hydrogen in the hydrogen-rich water from escaping or leaking. Therefore, the hydrogen-rich water in the flexible bag can maintain a high concentration for a long time, thereby increasing the health benefits of the user when drinking;

[0019] 3. The lower end of the flexible bag is connected to the adapter. External hydrogen-rich water can only be injected into the flexible bag through the adapter. When hydrogen in the hydrogen-rich water in the flexible bag escapes, the adapter is located at the lower end of the barrel. The mass of hydrogen is very light, so the hydrogen escaping from the hydrogen-rich water can only gather at the upper end of the inner cavity of the flexible bag, forming a liquid sealing structure, thereby effectively preventing the hydrogen escaping from the hydrogen-rich water from leaking out and ensuring the stability of the concentration of hydrogen-rich water.

[0020] 4. The lowest point of the inclined surface of the raised part inside the barrel body is adapted to the inner hole of the adapter. The bottom of the flexible bag body is placed on the inclined surface, so that the bottom surface of the flexible bag body also forms an inclined surface. Therefore, under the action of gravity, the liquid injected into the flexible bag body can be completely discharged to the outside of the barrel body through the adapter body, which also increases the drainage speed of the adapter body, effectively preventing residual liquid in the flexible bag body when the user drinks, saving water resources, and at the same time, preventing residual liquid in the flexible bag body from promoting bacterial growth, ensuring the cleanliness of the flexible bag body;

[0021] 5. The bottom surface of the barrel is provided with a positioning groove, and the lid can be inserted into the positioning groove. Therefore, when packaged and used, the barrel can be stacked up and down in sequence, thereby effectively reducing the storage volume and stacking height, reducing the packaging size, facilitating warehousing and transportation, and saving costs. Therefore, it has multiple practical functions, greatly meeting the actual use needs of users. It has a simple structure, easy operation, and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an axonometric view of an embodiment of the present invention.

[0023] Figure 2 Schematic diagram of the structure of the exhaust hole in an embodiment of the present invention.

[0024] Figure 3 is a cross-sectional view of an embodiment of the present invention.

[0025] Figure 4 It is a structural schematic diagram of the inner liner assembly according to an embodiment of the present invention.

[0026] Figure 5 Schematic diagram of the structure of a catheter according to an embodiment of the present invention.

[0027] Figure 6 It is a schematic structural diagram of an adapter according to an embodiment of the present invention.

[0028] Figure 7 It is an exploded view of the stacked barrels according to an embodiment of the present invention.

[0029] Figure 8 It is an axonometric view of the stacked barrels of an embodiment of the present invention.

[0030] In the picture:

[0031] 1. Barrel body; 2. Inner liner assembly; 3. Lid; 4. Flexible bag body; 5. Adapter; 6. Raised part; 7. Inclined part; 8. Positioning groove; 9. Exhaust hole; 10. Valve core; 11. Pressure relief valve; 12. Stop valve; 13. Water inlet valve; 14. Connector; 15. Float switch; 16. Quick connector; 17. Conduit; 18. Fixed head; 19. Socket; 20. Electric heating device; 21. Insulated wire; 22. Receiving groove; 23. Positioning hole; 24. Sealing ring; 25. Gasket; 26. Annular groove; 27. Nut; 28. Antibacterial combination filter element; 29. ​​One-way valve; 30. Ejector pin; 31. Dust cover; 32. Reducer thread connector; 33. Handle. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper end", "lower end", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, removable connections, or integral connections. They may refer to mechanical connections or electrical connections. They may refer to direct connections or indirect connections through an intermediary, and they may refer to internal communication between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0035] like Figures 1 to 8 As shown, the present embodiment provides an explosion-proof hydrogen water barrel, comprising a barrel body 1 and an inner liner assembly 2, the inner liner assembly 2 is located in the barrel body 1, and a lid 3 is sealed and installed at the barrel mouth of the barrel body 1, the inner liner assembly 2 comprises a flexible bag body 4 and an adapter 5, the flexible bag body 4 is provided with a metal film layer, the metal film layer of the present application adopts aluminum film, and the flexible bag body 4 is more commonly an aluminum film bag, the adapter 5 passes through and is sealed and installed at the lower end of the barrel wall of the barrel body 1, and the lower end of the flexible bag body 4 is connected to the adapter 5, the inner cavity of the barrel body 1 is provided with a protrusion 6, the top surface of the protrusion 6 is provided with an inclined portion 7 adapted to the adapter 5, the flexible bag body 4 contains liquid, and its bottom is placed on the inclined portion 7, the lowest point of the inclined portion 7 is higher than the inner hole of the adapter 5, or the lowest point of the inclined portion 7 is located within the range of the inner hole of the adapter 5, the bottom surface of the barrel body 1 and the protrusion 6 are provided with a positioning groove 8, the bottom of the positioning groove 8 is a horizontal plane (such as Figure 3As shown), the lid 3 can be inserted into the positioning groove 8, the barrel body 1 is injected with pressure, the lid 3 is provided with an exhaust hole 9 or a valve core 10 and / or a pressure relief valve 11 or a pressure switch valve (not shown in the figure) connected to the barrel body 1, and the exposed end of the adapter 5 is installed with a stop valve 12 or a pressure switch valve (not shown in the figure); wherein, when the barrel body 1 can be stacked up and down, the lid 3 can be inserted into the positioning groove 8 of the upper barrel body 1 (as shown in the figure). Figure 7 As shown); at the same time, when there is only the exhaust hole 9 on the cover 3, the hydrogen-rich water in the flexible bag 4 can be automatically discharged through the stop valve 12 under the action of gravity.

[0036] When this embodiment is actually used, air pressure or water pressure can be injected into the barrel body 1 through the valve core 10 or the adapter 5. The high pressure in the barrel body 1 accelerates the drainage speed. The lid 3 is provided with a pressure relief valve 11. Therefore, when the air pressure in the barrel body 1 is too high, the pressure relief valve 11 automatically releases the pressure, so it has an anti-explosion function to protect the user's safety. The flexible bag body 4 is provided with a metal film layer (not shown in the figure). When hydrogen-rich water is injected into the flexible bag body 4, the metal film with a dense molecular structure makes it difficult for hydrogen to pass through the metal film, thereby effectively preventing the hydrogen in the hydrogen-rich water from escaping or leaking. Therefore, the hydrogen-rich water in the flexible bag body 4 can maintain a high concentration for a long time, thereby increasing the health care effect when the user drinks it. The lower end of the flexible bag body 4 is connected to the adapter 5. External hydrogen-rich water can only be injected into the flexible bag body 4 through the adapter 5. When the hydrogen in the hydrogen-rich water in the flexible bag body 4 escapes, since the adapter 5 is located at the lower end of the barrel body 1, the mass of the hydrogen is very light, so the hydrogen escaping from the hydrogen-rich water can only escape to the bottom of the bag body 4. The upper end of the inner cavity of the flexible bag body 4 gathers to form a liquid sealing structure, thereby effectively preventing the escape of hydrogen from the hydrogen-rich water and ensuring the stability of the concentration of the hydrogen-rich water; the lowest point of the inclined portion 7 of the raised portion 6 in the barrel body 1 is higher than the inner hole of the adapter 5, and the bottom of the flexible bag body 4 is placed on the inclined portion 7, so that the bottom surface of the flexible bag body 4 also forms an inclined surface, so that under the action of gravity, the liquid injected into the flexible bag body 4 can be completely discharged from the outside of the barrel body 1 through the adapter 5, which also increases the drainage speed of the adapter 5, effectively preventing residual liquid from accumulating in the flexible bag body 4 when the user drinks, saving water resources, and at the same time, preventing residual liquid in the flexible bag body 4 from promoting bacterial reproduction, ensuring the cleanliness of the flexible bag body 4; a positioning groove 8 is provided on the bottom surface of the barrel body 1, and the lid 3 can be inserted into the positioning groove 8, so when packaged and used, the barrel body 1 can be stacked up and down in sequence, thereby effectively reducing the storage volume and stacking height, reducing the packaging size, facilitating warehousing and transportation, saving costs, and effectively meeting the actual use needs of users.

[0037] Furthermore, in this embodiment, a water inlet valve 13 is installed on the lid 3, and a connector 14 connected to the water inlet valve 13 is installed inside the lid 3. The flexible bag 4 is fixed on the connector 14 and connected to the inner hole of the connector 14. Therefore, the user can use the water inlet valve 13 to fill the flexible bag 4 with hydrogen-rich water, which is more convenient.

[0038] Furthermore, the connector 14 of this embodiment is equipped with a conduit 17 via a quick-connect connector 16. The other end of the conduit 17 is connected to the lower end of the flexible bag 4 via a fixed head 18. The conduit 17 communicates with the inner cavity of the flexible bag 4 via the fixed head 18. Therefore, the installation of the conduit 17 leaves the upper end of the flexible bag 4 without an opening, reducing the leakage of hydrogen in the hydrogen-rich water in the flexible bag 4. At the same time, the user can also fill the hydrogen-rich water through the water inlet valve 13, which is convenient for the user to use.

[0039] Furthermore, in this embodiment, a socket 19 is mounted on the barrel wall of the barrel body 1, and an electric heating device 20 is disposed within the flexible bag body 4. The socket 19 is electrically connected to the electric heating device 20 via an insulated wire 21 that passes through the flexible bag body 4. Therefore, the electric heating device 20 can heat the hydrogen-rich water within the flexible bag body 4, making it convenient for users to drink hot hydrogen-rich water in winter, improving the product quality and facilitating practical use.

[0040] Furthermore, the lower end of the barrel body 1 of this embodiment is provided with a receiving groove 22, and a positioning hole 23 is provided in the receiving groove 22. A sealing ring 24 and a gasket 25 are installed on the adapter 5 in sequence. The peripheral side of the sealing ring 24 is provided with an annular groove 26 adapted to the positioning hole 23. The adapter 5 is inserted into the positioning hole 23 so that the annular groove 26 is clamped in the positioning hole 23. The adapter 5 is screwed into the receiving groove 22 by a nut 27. Filter cotton (not shown in the figure) is provided in the adapter 5, such as PP cotton. The above structure ensures the sealing of the adapter 5 when it is installed on the barrel body 1. At the same time, the adapter 5 is hidden in the receiving groove 22 to prevent external impact on the adapter 5 and prevent the adapter 5 from protruding from the surface of the barrel body 1, which is convenient for packaging.

[0041] Furthermore, an antibacterial combination filter element 28 is installed in the barrel body 1 of this embodiment and on the adapter 5 via a quick connector. The antibacterial combination filter element 28 contains PP cotton and / or carbon fiber and / or nano-silver activated carbon particles and / or selenium-containing activated carbon particles and / or strontium-containing activated carbon particles and / or nano-zinc activated carbon particles and / or a combination of silver-zinc ion activated carbon antibacterial materials and / or a combination of strontium-selenium ion activated carbon materials and / or carbon fiber rods and / or particles or rods made of hydrogen-rich ceramics. The antibacterial combination filter element 28 can perform secondary filtration on the hydrogen-rich water to ensure the cleanliness of the hydrogen-rich water discharged by the shut-off valve 12, while also increasing the mineral content of the water and improving the taste of the water.

[0042] Furthermore, in this embodiment, a one-way valve 29 is provided in the water inlet of the adapter 5 and the lid 3, and a pin 30 is provided in the water inlet valve 13 and the shut-off valve 12 to open the one-way valve 29. The one-way valve 29 effectively prevents leakage of hydrogen-rich water in the flexible bag 4, ensuring a tight seal during transportation and use.

[0043] Furthermore, in this embodiment, a float switch 15 is installed on the connector 14 and inside the flexible bag 4. When the flexible bag 4 is full of hydrogen-rich water, the float switch 15 automatically closes the connector 14, thereby facilitating batch filling and actual user use. The float switch 15 is an upright float switch or a tilted lever float switch.

[0044] Furthermore, a dust cover 31 is installed on the cover 3 of this embodiment, and the dust cover 31 can be inserted into the positioning groove 8. The dust cover 31 can effectively prevent dust or insects from entering the cover 3, and some small parts can also be stored in the dust cover 31, thereby facilitating packaging and transportation.

[0045] Furthermore, the exposed end of the adapter 5 of this embodiment is screwed onto a reducer fitting 32 that communicates with the inner cavity of the flexible bag 4, and the stop valve 12 is mounted on the reducer fitting 32. The reducer fitting 32 facilitates installation of the stop valve 12. Furthermore, the reducer fitting 32 can be made of metal to increase structural strength and prevent breakage during use or transportation.

[0046] Furthermore, the exposed opening of the adapter 5 of this embodiment is provided with a sealing membrane or sealing cap (not shown in the figure), a handle 34 is mounted on the barrel body 1, and a non-slip mat is provided on the bottom surface of the barrel body 1 (not shown in the figure). The sealing membrane effectively prevents external dust and mosquitoes from entering the adapter 5, ensuring the cleanliness of the hydrogen-rich water. The handle 34 makes it easy for the user to pick up the barrel body 1 and facilitate its actual use. The non-slip mat provides friction, improving the stability of the overall placement of the barrel body 1.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An explosion-proof hydrogen water barrel, characterized by: The invention comprises a barrel body and an inner liner assembly, wherein the inner liner assembly is located in the barrel body, and a lid is sealed at the barrel mouth of the barrel body, and the inner liner assembly comprises a flexible bag body and an adapter, wherein the flexible bag body is provided with a metal film layer, and the adapter passes through and is sealed and installed at the lower end of the barrel wall of the barrel body, and the flexible bag body is communicated with the adapter, and the inner cavity of the barrel body is provided with a protrusion, and the top surface of the protrusion is provided with an inclined portion adapted to the adapter, liquid is contained in the flexible bag body, and its bottom is placed on the inclined portion, and a positioning groove is provided on the bottom surface of the barrel body at the protrusion, and the bottom of the positioning groove is a horizontal surface, and a shut-off valve or a pressure switch valve is installed at the exposed end of the adapter; wherein, when the barrel bodies are stacked up and down, the lid can be inserted into the positioning groove of the upper barrel body; the lid is provided with a water inlet valve, and the lid is provided with a water inlet valve. A connector connected to the water inlet valve is installed, and the flexible bag body is fixed on the connector and connected to the inner hole of the connector; a socket is installed on the barrel wall of the barrel body, and an electric heating device is provided in the flexible bag body, and the socket is electrically connected to the electric heating device through an insulated wire passing through the flexible bag body; a receiving groove is provided at the lower end of the barrel body, and a through positioning hole is provided in the receiving groove, and a sealing ring and a gasket are sequentially installed on the adapter, and the peripheral side of the sealing ring is provided with an annular groove adapted to the positioning hole, and the adapter is inserted into the positioning hole so that the annular groove is clamped in the positioning hole, and the adapter is screwed into the receiving groove by a nut, and filter cotton is provided in the adapter; a one-way valve is provided in the water inlet of the adapter and the lid, and a thimble that can push open the one-way valve is provided in the water inlet valve and the stop valve.

2. The explosion-proof hydrogen water barrel according to claim 1, characterized in that: The connector is equipped with a catheter via a quick-insert connector. The other end of the catheter is connected to the lower end of the flexible bag body via a fixed head. The catheter is communicated with the inner cavity of the flexible bag body via the fixed head.

3. An explosion-proof hydrogen water barrel according to claim 1 or 2, characterized in that: An antibacterial combination filter element is installed in the barrel body and on the adapter through a quick connector. The antibacterial combination filter element contains PP cotton and / or carbon fiber and / or nano-silver activated carbon particles and / or selenium-containing activated carbon particles and / or strontium-containing activated carbon particles and / or nano-zinc activated carbon particles and / or a combination of silver-zinc ion activated carbon antibacterial materials and / or a combination of strontium-selenium ion antibacterial activated carbon materials and / or carbon fiber rods and / or particles or rods made of hydrogen-rich ceramics.

4. The explosion-proof hydrogen water barrel according to claim 2, characterized in that: A float switch is installed on the connecting head and located in the flexible bag body.

5. The explosion-proof hydrogen water barrel according to claim 1 or 2, characterized in that: The exposed end of the adapter is screwed with a reducer thread joint, and the stop valve is installed on the reducer thread joint.

6. An explosion-proof hydrogen water barrel according to claim 1 or 2, characterized in that: The exposed port of the adapter is provided with a sealing film or a sealing cap, a handle is installed on the barrel body, and an anti-slip pad is provided on the bottom surface of the barrel body.

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