Water storage bag, water replenishing device of water storage bag and self-service water vending machine

Abstract

The utility model discloses a water storage bag, a water replenishing device of the water storage bag and a self-service water vending machine, and belongs to the field of vending machines. Comprising a bag body and a bag opening, a water storage cavity for storing water is formed in the bag body; the bag opening is located at the outer end of the bag body and is an inlet-outlet of the water storage cavity; an infusion switch is arranged in the bag opening, the infusion switch is closed in a normal state, the opening of the infusion switch has a pressure threshold value, and when the pressure of the outside to the bag opening reaches the set threshold value, the bag opening is opened; the infusion switch comprises a return part made of an elastic material, so that the infusion switch is kept normally closed; the purpose that a user does not need to carry a container when purchasing water can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of vending machines, and more specifically, relates to a water storage bag, a water storage bag replenishment device, and a self-service water vending machine. Background Technology

[0002] Existing self-service water vending machines require users to bring their own containers (usually buckets) to collect purified water, and these machines only sell purified water. While this allows for the recycling of water containers and ensures environmental performance, it also increases the difficulty of use for users, forcing them to use the machines and resulting in poor sales flexibility. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a water storage bag, a water storage bag replenishment device, and a self-service water vending machine, which can realize the purpose of eliminating the need for users to bring their own containers when purchasing water.

[0004] This utility model discloses a water storage bag, including a bag body and a bag opening; the bag body has a water storage cavity for storing water inside; the bag opening is located at the outer end of the bag body and serves as the inlet and outlet of the water storage cavity; an infusion switch is provided inside the bag opening, which is normally closed, and the opening of the infusion switch has a pressure threshold. When the external pressure on the bag opening reaches the set threshold, the bag opening is open; the infusion switch includes a return component made of elastic material to keep the infusion switch normally closed.

[0005] As a further improvement of this utility model, the infusion switch includes a bottle cap and an elastic membrane; the bottle cap is connected to the bag opening; the elastic membrane normally closes the bottle cap opening, and when the pressure of external force on the elastic membrane reaches a set threshold, the elastic membrane cracks to form a water inlet; the elastic membrane is a return component, and the water inlet has the ability to close automatically.

[0006] As a further improvement of this utility model, the infusion switch includes a bottle cap and an elastic membrane; the bottle cap is connected to the bag opening; the elastic membrane is provided with a water replenishment channel that is normally closed, and when the pressure of external force on the elastic membrane reaches a set threshold, the water replenishment channel is kept open under pressure; the elastic membrane is a return component, and the water replenishment channel has the ability to close automatically.

[0007] As a further improvement of this utility model, a positioning groove is provided on the outer periphery of the bag opening, and the positioning groove is fitted and matched with the fixing parts of the external device to limit the position.

[0008] A water replenishment device for a water storage bag, used for replenishing water in a water storage bag according to any one of the claims; the water replenishment device includes an infusion guiding unit and an infusion driving unit;

[0009] The infusion guiding unit is located above the positioning unit. The infusion guiding unit is connected to an external water source through an infusion tube to replenish water to the water storage bag.

[0010] The infusion drive unit is connected to the infusion guide unit to drive the infusion guide unit to move toward the water storage bag to be replenished; when the infusion guide unit is located or moved to the upper side of the water storage bag, the movement stroke of the infusion guide unit is at least greater than its distance from the opening of the water storage bag, so that when draining, the output end of the infusion guide unit is located inside the water storage bag.

[0011] The water replenishment device is used in conjunction with an external positioning unit; the positioning unit has a limiting groove surrounded by a thin wall; the thin wall is fitted and matched with a positioning groove opened on the outer periphery of the bag opening; the outer diameter of the bag opening is larger than the diameter of the limiting groove, so that the bag opening is slidably and limitedly embedded in the limiting groove during installation.

[0012] A self-service water vending machine for selling water-filled storage bags; the self-service water vending machine includes...

[0013] frame;

[0014] The turntable unit is located inside the frame and has the ability to rotate on its own. It also has several limiting grooves to hold the water storage bag.

[0015] A water storage bag replenishment device is mounted on a frame and located outside at least one corresponding limiting groove, and has the ability to move toward the water storage bag clamped on the limiting groove.

[0016] The feeding unit, located inside the frame and positioned outside the limiting groove where the water replenishment device is located, has an output end capable of moving towards the water storage bag within the limiting groove, thereby driving the water storage bag to move out of the limiting groove range for material discharge; and

[0017] The control and detection unit is electrically connected to the turntable unit and the feeding unit to obtain the rotation information of the turntable unit and output start and stop signals to the feeding unit.

[0018] As a further improvement of this utility model, the turntable unit includes a turntable and a turntable drive assembly;

[0019] The turntable has several evenly distributed limiting grooves on its edge; each limiting groove has a corresponding material discharge channel on its outer side.

[0020] The turntable drive assembly includes a rotating motor fixedly installed inside the frame. The output end of the rotating motor is directly or indirectly connected to the turntable to drive the turntable to rotate.

[0021] As a further improvement of this utility model, the turntable drive assembly also includes a small gear, a large gear, a bearing housing, and a central tube; the small gear is connected to the output end of the rotating motor; the large gear meshes with the small gear and is sleeved on the outer circumference of the central tube; the turntable is sleeved on the outer circumference of the bearing housing; a bearing is sleeved on the outer circumference of the central tube, and the bearing housing is sleeved and installed on the outer circumference of the central tube for installing the bearing; the large gear, the turntable, and the bearing housing are axially locked together by screws; the central tube is fixedly installed on the frame.

[0022] As a further improvement of this utility model, the pushing unit is located on the inner side of the upper end of the limiting groove where the water replenishment device is located; the pushing unit includes a pushing motor and a pushing block; the pushing block is connected to the output end of the pushing motor so as to have the ability to abut against the bag opening of the water storage bag and horizontally drive the water storage bag to move toward disengaging from the limiting groove.

[0023] As a further improvement of this utility model, a feeding guide cover is fixedly provided on the outer periphery of at least one limiting groove; a feeding channel for the water storage bag opening to move is opened inside the feeding guide cover; a feeding guide plate matching the positioning slide is fixedly provided in the feeding channel; the limiting groove where the feeding guide cover is located is not the limiting groove corresponding to the water replenishment device.

[0024] As a further improvement of this utility model, a guide plate is provided at the lower end of the feeding guide cover extending towards the center of the turntable unit. The guide plate is located at the lower end of the turntable unit to support and limit the turntable unit.

[0025] As a further improvement of this utility model, the frame includes a load-bearing beam and several columns; the several columns constitute a frame; the load-bearing beam is fixedly arranged between the columns, and the turntable unit is installed at the lower end of the load-bearing beam.

[0026] As a further improvement of this utility model, a load-bearing hook plate is provided at the lower end of the load-bearing beam; the lower end of the load-bearing hook plate is located on the lower end face of the turntable unit to support the turntable unit after water filling.

[0027] As a further improvement of this utility model, both ends of the opening side of the limiting groove are fixedly provided with protrusions, and the distance between the two corresponding matching protrusions is greater than the opening of the limiting groove to form a material dropping channel; the lower end of the load-bearing hook plate is located at the lower end of the protrusions.

[0028] As a further improvement of this utility model, a limiting cover is provided on the upper side of the turntable unit, and the outer edge of the limiting cover is a limiting shell wall extending downward; the limiting shell wall is located outside the limiting groove of the empty space; the limiting shell wall has an opening to connect to the limiting groove where the water replenishment device is located.

[0029] As a further improvement of this utility model, the control and detection unit includes a control module and a detection module; the detection module includes a material detection probe and / or a pusher limit switch;

[0030] The material detection probe is located on the upper side of the preceding limiting groove of the limiting groove where the water replenishment device is located, in order to obtain the material clamping information of the limiting groove; the control module is connected to the material detection probe to obtain the material clamping information;

[0031] The pusher limit switch is located outside the limit groove where the water replenishment device is located to obtain the return information of the pusher unit output end; the pusher limit switch is connected to the drive component of the pusher unit to control the operation of the drive component of the pusher unit according to the position information of the water storage bag.

[0032] As a further improvement of this utility model, the control and detection unit includes a control module and an induction switch; the turntable has an induction hole on the inner side of the limiting groove; the induction switch is located on the upper side of the corresponding induction hole of the limiting groove for feeding; the sensing range of the induction switch is less than or equal to the diameter of the induction hole; the control module and the induction switch are connected to obtain the rotation angle information of the turntable; the control module and the rotating motor are connected to control the operation of the rotating motor according to the rotation angle information.

[0033] As a further improvement of this utility model, a limiting cover is provided on the upper side of the turntable unit; a limiting hole is provided at the upper end of the limiting cover;

[0034] The control and detection unit includes a positioning electromagnet; the positioning electromagnet is fixedly installed inside the frame; the output end of the positioning electromagnet corresponds to and matches the limiting hole, so as to be inserted and fixed together with the limiting cover during operation.

[0035] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0036] 1. By adding an elastic membrane or duckbill valve to the cap of a standard water storage bag, and with the addition of a water replenishment device, the water storage bag can be refilled with clean water in the vending machine, allowing it to remain usable even after refilling. For self-service water vending machines, the small size of the water storage bag allows for more empty bags to be held, increasing the frequency of water dispensing, reducing the need for maintenance personnel to refill, and providing convenience for users who no longer need to carry buckets to buy water.

[0037] 2. By setting up a turntable unit inside the water vending machine, the empty water storage bag is rotated to the bottom of the water replenishment device for automatic filling each time water is needed. This setting has high filling accuracy, low construction cost, and is beneficial to industrial manufacturing and commercial promotion. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of the water storage bag of this utility model;

[0039] Figure 2 This is a schematic diagram of the structure of the opening portion of the water storage bag of this utility model;

[0040] Figure 3 This is a schematic diagram of the external structure of the self-service water vending machine of this utility model;

[0041] Figure 4 This is a schematic diagram of the internal structure of the self-service water vending machine of this utility model;

[0042] Figure 5 This is a schematic diagram of the external structure of the turntable unit of this utility model;

[0043] Figure 6 This is a schematic diagram of the internal structure of the turntable unit of this utility model;

[0044] Figure 7 This is a schematic diagram of the water replenishment device of this utility model;

[0045] Figure 8 This is a schematic diagram of the structure of the turntable drive assembly of this utility model;

[0046] Figure 9 This is an enlarged schematic diagram of the turntable drive assembly of this utility model;

[0047] Figure 10 This is a schematic diagram of the positioning electromagnet of this utility model;

[0048] Figure 11 This is a schematic diagram of the rotary feeding device of this utility model.

[0049] Explanation of the labels in the diagram:

[0050] Frame 1, Column 11, Side Plate 12, Top Plate 13, Bottom Plate 14, Exit 141, Load-bearing Beam 15, Load-bearing Hook Plate 16;

[0051] Water storage bag 2, positioning groove 21;

[0052] Turntable 31, limiting groove 311, material feeding channel 312, sensing hole 313;

[0053] 41 filling piercing head, 42 feeding motor;

[0054] Push block 51;

[0055] Positioning electromagnet 61;

[0056] Material detection probe 71;

[0057] Limiting cover 81;

[0058] Material feeding guide cover 91, induction switch 92;

[0059] Small gear 101, large gear 102, rotating motor 103, bearing housing 104. Detailed Implementation

[0060] A water storage bag, please refer to Figures 1-2 The bag consists of a body and an opening. The body contains a water storage chamber; the opening is located at the outer end of the body and serves as the inlet / outlet of the water storage chamber; an infusion switch is located inside the opening, which is normally closed. The opening of the infusion switch has a pressure threshold; when the external pressure on the opening reaches the set threshold, the opening opens. The infusion switch is connected to an elastic element that provides a resilient return force, enabling the infusion switch to remain closed.

[0061] Specifically, the infusion switch can be a bottle cap and an elastic diaphragm. The bottle cap is threaded to the bag opening; the cap surface has a through hole, and the elastic diaphragm normally closes the through hole. When the pressure on the elastic diaphragm reaches a set threshold, the elastic diaphragm cracks to form a water inlet. The elastic diaphragm is made of elastic material, and the water inlet has the ability to close automatically. If a filling head punctures the elastic diaphragm, the diaphragm cracks, and as the filling head enters, the elastic diaphragm tightly wraps around the filling head due to its elasticity, preventing leakage. After the filling head is pulled out, the elasticity of the diaphragm will close the water inlet again, providing a certain degree of sealing.

[0062] Specifically, in addition to the aforementioned elastic membrane design, the infusion switch can also be a bottle cap and a flexible duckbill valve design. The flexible duckbill valve is located at the through-hole of the bottle cap, forming a normally closed water supply channel. When the pressure exerted on the duckbill valve by an external force reaches a set threshold, the water supply channel remains open under pressure. The elastic membrane is made of elastic material, and the water supply channel has the ability to close automatically. If a filling head is used for water supply, the filling head is inserted into the duckbill valve for water supply. After the filling head is removed, the duckbill valve can automatically return to its original position, achieving a one-way seal.

[0063] Specifically, a positioning groove 21 is provided on the outer periphery of the bag opening. The positioning groove 21 is fitted and matched with the fixing parts of the external device to ensure that the water storage bag 2 can be placed stably when replenishing water.

[0064] Please refer to a water storage bag water replenishment device. Figures 3-11 It is used to replenish water to the water storage bag 2; the water replenishment device includes a filling piercing head 41 and a feeding motor 42.

[0065] The water replenishment device works in conjunction with an external positioning unit; the positioning unit has a limiting groove 311 formed by a thin wall. Specifically, the positioning unit can be a thin metal sheet with a limiting groove 311 on its outer edge. The limiting groove 311 is used to embed the opening of the water storage bag 2, and a positioning groove 21 that fits and matches the thin wall is formed on the outer periphery of the opening. The positioning groove 21 can slide and connect with the thin metal sheet to achieve both insertion of the water storage bag 2 and vertical positioning.

[0066] The feeding motor 42 is fixedly mounted above the limiting groove 311. The filling piercing head 41 is connected to the output end of the feeding motor 42. The filling piercing head 41 is connected to an external water source via a hose. The lower end of the filling piercing head 41 can be a pointed tip to facilitate passing through the infusion switch of the water storage bag 2. The feeding motor 42 can drive the filling piercing head 41 to reciprocate in the vertical direction. During operation, the filling piercing head 41 can be inserted downwards into the infusion switch of the water storage bag 2 to deliver water.

[0067] The water replenishment device can be an intermediate module of the self-service water vending machine described below, or it can be used as a standalone water vending machine. The user puts the empty water storage bag 2 into the limiting groove 311, the replenishment motor 42 starts and descends, the filling piercing head 41 is filled with water, the replenishment motor 42 starts and returns to its original position, and the user removes the water storage bag 2 to complete the water purchase.

[0068] Preferably, a protrusion is fixedly provided on the outer edge of the metal sheet outside the limiting groove 311, and the distance between the two corresponding protrusions is greater than the opening of the limiting groove 311, so as to form a larger material discharge channel 312. The diameter of the material discharge channel 312 is greater than the outer diameter of the bag opening to facilitate material discharge.

[0069] Alternatively, another configuration can be adopted, the difference being that the limiting groove 311 is not directly located under the feeding motor 42 and the filling piercing head 41. The metal sheet can be made movable, or the feeding motor 42 and the filling piercing head 41 can be made movable as a whole. Water filling is only initiated when the limiting groove 311 and the filling piercing head 41 move to the corresponding positions. The advantage of this configuration is that the water source and filling equipment can be hidden in a housing, reducing water source contamination and preventing damage to the filling equipment.

[0070] A self-service water vending machine, please refer to Figures 3-11 The self-service water vending machine is used for selling water-filled storage bags 2; the self-service water vending machine includes a frame 1, a turntable unit, a water-filling device for storage bags, a feeding unit, and a control and detection unit.

[0071] The frame 1 includes several columns 11, side plates 12, top plate 13, bottom plate 14, and load-bearing beams 15.

[0072] In this embodiment, there are 12 columns 11 forming a square frame. Side panels 12 cover the sides of the frame and have openings for refilling and / or maintaining the self-service water vending machine. Top plate 13 covers the top surface of the frame. Bottom plate 14 covers the bottom surface of the frame and has an outlet 141 for discharging water from the storage bag. A load-bearing beam 15 is fixedly installed on the upper side of the top plate for mounting the turntable unit. Both ends of the load-bearing beam 15 are located on the upper side of the vertical columns. This increases the number of columns 11 supported by the load-bearing beam 15, preventing the frame 1 from collapsing.

[0073] The turntable unit is located inside the frame 1 and has the ability to rotate. It also has several limiting grooves 311 for clamping water storage bags. The turntable unit includes a turntable 31 and a turntable drive assembly. Several evenly distributed limiting grooves 311 are formed on the edge of the turntable 31; a corresponding material discharge channel 312 is formed on the outer side of each limiting groove 311.

[0074] The turntable drive assembly includes a pinion 101, a large gear 102, a rotary motor 103, a bearing housing 104, and a central tube. The rotary motor 103 is fixedly mounted on a motor mounting plate inside the frame 1. The motor mounting plate is connected to the central tube, the upper end of which passes through the top plate 13 and is fixedly connected to the load-bearing beam 15 via a flange. The pinion 101 is connected to the output end of the rotary motor 103; the large gear 102 meshes with the pinion 101 and is sleeved on the outer circumference of the central tube; the turntable 31 is sleeved on the outer circumference of the bearing housing 104; a bearing is sleeved on the outer circumference of the central tube, and the bearing housing 104 is sleeved and installed on the outer circumference of the central tube for mounting the bearing; the large gear 102, the turntable 31, and the bearing housing 104 are axially locked together by screws; the lower end of the central tube supports the large gear 102, the turntable 31, and the bearing housing 104, which are locked together as a whole. The rotating motor 103 is connected to the turntable 31 through a gear set to drive the turntable 31 to rotate. The gear set is not limited to the small gear 101 and the large gear 102. If there is a need for speed reduction, the number of gears can be increased.

[0075] The water bag replenishment device is mounted on the frame 1 and located on the upper side of at least one corresponding limiting groove 311, and has the ability to move toward the water bag 2 clamped on the limiting groove 311. In the self-service water vending machine of this embodiment, the metal sheet is the turntable 31, the replenishment motor 42 is fixedly mounted on the load-bearing beam 15, and the output end of the replenishment motor 42 passes through the frame 1 and is located on the upper side of the limiting groove 311 for filling. Other structures are as described above for the water replenishment device.

[0076] The feeding unit is located inside the upper end of the limiting groove 311 used for filling. The feeding unit includes a feeding motor and a feeding block 51. The feeding motor is fixedly mounted on the motor mounting plate, and the feeding block 51 is connected to the output end of the feeding motor, so as to have the ability to abut against the bag opening of the water storage bag 2 and horizontally drive the water storage bag 2 to move away from the limiting groove 311. Of course, the feeding block 51 can also be replaced with a cam, and the feeding motor can be replaced with a rotary motor to achieve the above technical effect.

[0077] A feeding station is provided on the outer periphery of the turntable 31. A feeding guide cover 91 is fixedly installed on the outer periphery of the limiting groove 311 of this station, and the feeding guide cover 91 is fixedly connected to the motor mounting plate. The feeding guide cover 91 has a feeding channel for the movement of the mouth of the water storage bag 2. A feeding guide plate matching the positioning slide 21 is fixedly installed in the feeding channel. The limiting groove 311 where the feeding guide cover 91 is located is not the limiting groove 311 corresponding to the water replenishment device. A guide cover support plate extends from the lower end of the feeding guide cover 91 toward the center of the turntable 311 to support the turntable 311. Since the turntable 311 is large and prone to unevenness, the guide cover support plate is set to ensure that the limiting groove 311 always corresponds to the feeding channel and will not misalign. The side plate 12 also has a material replenishment channel at the corresponding position, which makes it convenient for maintenance personnel to replenish the water storage bag 2 through this position. The operator only needs to insert the bag opening of the water storage bag 2 into the material replenishment guide cover 91 and press it all the way down to complete the material replenishment. After the turntable 31 rotates a certain angle, it can replenish the next limiting groove 311.

[0078] In addition, a load-bearing hook plate 16 is provided at the lower end of the load-bearing beam 15; the lower end of the load-bearing hook plate 16 is located on the lower end face of the turntable 311 to support the turntable 311. The lower end of the load-bearing hook plate 16 is located at the lower end of the protrusion that forms the material discharge channel 312. Because the water storage bag 2 is heavy when filled with water, the turntable 311 is prone to deformation. The load-bearing hook plate 16 supports the turntable 311 to prevent deformation and damage.

[0079] The control and detection unit is connected to the turntable unit and the feeding unit to obtain the rotation information of the turntable unit and output start and stop signals to the feeding unit.

[0080] Preferably, the control and detection unit includes a control module and a material detection probe 71; the material detection probe 71 is located on the upper side of the preceding limiting groove 311 of the limiting groove 311 where the water replenishment device is located, so as to obtain the material clamping information of the limiting groove 311; the control module and the material detection probe 71 are connected to obtain the material clamping information.

[0081] Preferably, the control and detection unit includes a pusher limit switch; the pusher limit switch is located outside the limiting groove 311 where the water replenishment device is located, so as to obtain the position information of the water storage bag in the limiting groove 311; the pusher limit switch is connected to the drive component of the pusher unit to control the operation of the drive component of the pusher unit according to the position information of the water storage bag.

[0082] Preferably, the control and detection unit includes a control module and a sensor switch 92; the turntable 31 has a sensing hole 313 inside the limiting groove 311; the sensor switch 92 is located above the corresponding sensing hole 313 in the limiting groove 311 for replenishing material; the sensing range of the sensor switch 92 is less than or equal to the diameter of the sensing hole 313; the control module is connected to the sensor switch 92 to obtain the rotation angle information of the turntable 31; the control module is connected to the rotating motor 103 to control the operation of the rotating motor 103 according to the rotation angle information. This ensures that the limiting groove 311 can be rotated to the set position, improving the accuracy and convenience of filling and replenishing operations.

[0083] Preferably, the turntable unit is covered with a limiting cover 81 on its upper side; the limiting cover 81 has a limiting hole at its upper end; the control and detection unit includes a positioning electromagnet 61; the positioning electromagnet is fixedly installed inside the frame 1; the output end of the positioning electromagnet 61 corresponds to and matches the limiting hole, so as to be inserted and fixed together with the limiting cover 81 during operation. In addition, the outer edge of the limiting cover 81 is a downwardly extending limiting shell wall; the limiting shell wall is located outside the empty limiting groove 311, which means that the limiting groove 311 does not need to be replenished with water or materials. The limiting shell wall has an opening to connect the limiting groove 311 where the water replenishment device is located, and also to the limiting groove 311 where the material replenishment guide cover 91 is located, so as not to hinder the water storage bag 2 from being moved out after water replenishment, nor to hinder the water storage bag 2 from being moved in during material replenishment.

[0084] Working principle: Each limiting groove 311 of the turntable 31 contains an empty water storage bag 2. When a consumer needs to buy water, the water storage bag 2 located below the filling piercing head 41 is used as the water storage bag 2 to be filled, or the filling piercing head 41 located in front of the filling piercing head 41 on the turntable 31 is used. The difference is that the latter requires the turntable 31 to move, and the material detection probe 71 determines that the water storage bag 2 has been transported to the underside of the filling piercing head 41. Then, the feeding motor 42 starts, and the filling piercing head 41 descends to fill the water. After filling is completed, the filling piercing head 41 returns to its original position, the pusher motor starts, and the pusher 51 moves to push the filled water storage bag 2 into the discharge channel 312. After the water storage bag 2 enters the discharge channel 312, it loses its limiting position and falls through the outlet 141 to be discharged, and the consumer completes the purchase.

[0085] Afterwards, when a consumer buys water again, the turntable 31 can be moved to a set angle to ensure repeated water sales.

[0086] Once all empty water storage bags 2 on the turntable 31 have been used up, maintenance personnel can insert new empty water storage bags 2 into the replenishment guide cover 9 through the replenishment hopper opening, and replenish the limiting groove 311 in conjunction with the rotation of the turntable 31.

Claims

1. A water storage bag, characterized in that: It includes a bag body and a bag opening; the bag body has a water storage chamber for storing water; the bag opening is located at the outer end of the bag body and serves as the inlet and outlet of the water storage chamber; the bag opening has an infusion switch, which is normally closed, and the opening of the infusion switch has a pressure threshold. When the external pressure on the bag opening reaches the set threshold, the bag opening is open; the infusion switch includes a return component made of elastic material to keep the infusion switch normally closed.

2. A water storage bag according to claim 1, characterized in that: The infusion switch includes a bottle cap and an elastic membrane; the bottle cap is connected to the bag opening; the elastic membrane normally closes the bottle cap opening, and when the pressure of external force on the elastic membrane reaches a set threshold, the elastic membrane cracks to form a water inlet; the elastic membrane is a return component, and the water inlet has the ability to close automatically.

3. A water storage bag according to claim 1, characterized in that: The infusion switch includes a bottle cap and an elastic membrane; the bottle cap is connected to the bag opening; the elastic membrane has a water replenishment channel that is normally closed, and when the pressure of external force on the elastic membrane reaches a set threshold, the water replenishment channel is kept open under pressure; the elastic membrane is a return component, and the water replenishment channel has the ability to close automatically.

4. A water storage bag according to claim 1, characterized in that: A positioning groove (21) is provided on the outer periphery of the bag opening. The positioning groove (21) is fitted and matched with the fixing parts of the external device to limit the position.

5. A water storage bag water replenishment device, characterized in that: For replenishing water in the water storage bag (2) according to any one of claims 1 to 4; the water replenishment device includes an infusion guiding unit and an infusion driving unit; The infusion guiding unit is located above the positioning unit. The infusion guiding unit is connected to an external water source through an infusion tube to replenish water to the water storage bag. The infusion drive unit is connected to the infusion guide unit to drive the infusion guide unit to move toward the water storage bag to be replenished; when the infusion guide unit is located or moved to the upper side of the water storage bag, the movement stroke of the infusion guide unit is at least greater than its distance from the opening of the water storage bag, so that when draining, the output end of the infusion guide unit is located inside the water storage bag. The water replenishment device is used in conjunction with the external positioning unit; the positioning unit has a limiting groove (311) surrounded by a thin wall; the thin wall is fitted and matched with the positioning slide groove (21) opened on the outer periphery of the bag opening; the outer diameter of the bag opening is larger than the diameter of the limiting groove (311) so that the bag opening is slidably and limitedly embedded in the limiting groove (311) during installation.

6. A self-service water vending machine, characterized in that: For selling water-filled storage bags (2) according to any one of claims 1 to 4; the self-service water vending machine includes Framework (1); The turntable unit is located inside the frame (1) and has the ability to rotate on its own. It also has several limiting grooves (311) for clamping water storage bags. The water storage bag replenishment device according to any one of claims 5 is installed on the frame (1) and located outside at least one corresponding limiting groove (311), and has the ability to move toward the water storage bag (2) clamped on the limiting groove (311); The pushing unit is located inside the frame (1) and is set outside the limiting groove (311) where the water replenishment device is located. The output end of the pushing unit has the ability to move toward the water storage bag (2) inside the limiting groove (311) to drive the water storage bag (2) to move out of the limiting groove (311) range to drop the material. and The control and detection unit is electrically connected to the turntable unit and the feeding unit to obtain the rotation information of the turntable unit and output start and stop signals to the feeding unit.

7. A self-service water vending machine according to claim 6, characterized in that: The turntable unit includes a turntable (31) and a turntable drive assembly; The edge of the turntable (31) is provided with several evenly distributed limiting grooves (311); each limiting groove (311) has a corresponding material dropping channel (312) on its outer side. The turntable drive assembly includes a rotary motor (103) fixedly installed inside the frame (1). The output end of the rotary motor (103) is directly or indirectly connected to the turntable (31) to drive the turntable (31) to rotate.

8. A self-service water vending machine according to claim 7, characterized in that: The turntable drive assembly also includes a pinion (101), a large gear (102), a bearing housing (104), and a central tube; the pinion (101) is connected to the output end of the rotating motor (103); the large gear (102) meshes with the pinion (101) and is sleeved on the outer circumference of the central tube; the turntable (31) is sleeved on the outer circumference of the bearing housing (104); a bearing is sleeved on the outer circumference of the central tube, and the bearing housing (104) is sleeved and installed on the outer circumference of the central tube and used to install the bearing; the large gear (102), the turntable (31), and the bearing housing (104) are axially locked together by screws; the central tube is fixedly installed on the frame (1).

9. A self-service water vending machine according to claim 6, characterized in that: The pushing unit is located on the inner side of the upper end of the limiting groove (311) where the water replenishment device is located; the pushing unit includes a pushing motor and a pushing block (51); the pushing block (51) is connected to the output end of the pushing motor so as to have the ability to abut against the bag opening of the water storage bag (2) and horizontally drive the water storage bag (2) to move toward disengaging from the limiting groove (311).

10. A self-service water vending machine according to claim 6, characterized in that: At least one limiting groove (311) is fixedly provided with a feeding guide cover (91) on its outer periphery; the feeding guide cover (91) is provided with a feeding channel for the water storage bag (2) to move inside; a feeding guide plate matching the positioning slide (21) is fixedly provided inside the feeding channel; the limiting groove (311) where the feeding guide cover (91) is located is not the limiting groove (311) corresponding to the water supply device.

11. A self-service water vending machine according to claim 10, characterized in that: The lower end of the feeding guide (91) extends toward the center of the turntable unit and is provided with a guide plate. The guide plate is located at the lower end of the turntable unit to support and limit the turntable unit.

12. A self-service water vending machine according to claim 6, characterized in that: The frame (1) includes a load-bearing beam (15) and several columns (11); the several columns (11) form a frame; the load-bearing beam (15) is fixedly installed between the columns (11), and the turntable unit is installed at the lower end of the load-bearing beam (15).

13. A self-service water vending machine according to claim 12, characterized in that: A load-bearing hook plate (16) is provided at the lower end of the load-bearing beam (15); the lower end of the load-bearing hook plate (16) is located at the lower end face of the turntable unit to support the turntable unit after water filling.

14. A self-service water vending machine according to claim 13, characterized in that: Both ends of the opening side of the limiting groove (311) are fixedly provided with protrusions, and the distance between the two corresponding matching protrusions is greater than the opening of the limiting groove (311) to form a material drop channel (312); the lower end of the load-bearing hook plate (16) is located at the lower end of the protrusion.

15. A self-service water vending machine according to claim 6, characterized in that: The turntable unit is covered with a limiting cover (81) on the upper side. The outer edge of the limiting cover (81) is a limiting shell wall that extends downward. The limiting shell wall is located outside the limiting groove (311) of the empty space. The limiting shell wall has an opening to connect to the limiting groove (311) where the water replenishment device is located.

16. A self-service water vending machine according to claim 6, characterized in that: The control and detection unit includes a control module and a detection module; the detection module includes a material detection probe (71) and / or a pusher limit switch; The material detection probe (71) is located on the upper side of the preceding limiting groove (311) of the limiting groove (311) where the water replenishment device is located, in order to obtain the material clamping information of the limiting groove (311); the control module is connected to the material detection probe (71) to obtain the material clamping information; The pusher limit switch is located outside the limit groove (311) where the water replenishment device is located, so as to obtain the return information of the pusher unit output end; the pusher limit switch is connected to the drive component of the pusher unit to control the operation of the drive component of the pusher unit according to the position information of the water storage bag.

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