Dropping device

Abstract

The invention discloses a feeding device which comprises a shell, a feeding device and a discharging device. The liquid storage unit is made of a flexible material, contains an additive and is arranged in the storage cavity; the liquid pumping assembly is provided with a liquid pumping end communicated with the liquid outlet end of the liquid storage unit and is used for pumping the additive; a liquid storage tank is arranged in the storage cavity, the liquid storage units are arranged in the liquid storage tank in a one-to-one correspondence mode, a communication opening is formed in the liquid storage tank, and the liquid pumping end is communicated with the liquid storage units in the liquid storage tank through the communication opening. The feeding device has the beneficial effects that the liquid storage tank for limiting and fixing the liquid storage unit is arranged in the storage cavity, and when the feeding device is vibrated, limiting and supporting are conducted through the tank wall of the liquid storage tank, so that the liquid storage unit is prevented from shaking in the storage cavity; meanwhile, the liquid pumping assembly is communicated with the internal liquid storage unit through the communication opening formed in the liquid storage tank, so that the liquid storage unit and the liquid pumping assembly for pumping the additive are more stable, and the situation that the liquid storage unit is separated from the pumping end is prevented.

Description

Technical Field

[0001] The invention belongs to the field of cleaning equipment, and in particular relates to a dispensing device. Background Art

[0002] The clothing treatment device is a frequently used household appliance. The clothing treatment device is provided with a dispensing device, and a liquid storage unit for storing additives is provided inside the dispensing device. At present, in order to improve the types of liquid storage units that are compatible with some dispensing devices, a hook structure is added to the top of the storage cavity inside the dispensing device to hang the soft-packaged liquid storage unit in the storage cavity. At the same time, a hose is provided in the dispensing device to communicate with the liquid outlet end of the soft-packaged liquid storage unit to suck the additives in the soft-packaged liquid storage unit.

[0003] Existing technical defects: the liquid storage unit of the soft package is suspended in the storage cavity, and there is no structure in the storage cavity to stabilize and limit the soft package liquid storage unit. When the delivery device shakes, the liquid storage unit will shake in the storage cavity with the hook structure as the center, and the liquid storage unit may be detached from the hook, resulting in the liquid storage unit being unable to output additives normally, and even the surface of the liquid storage unit may be broken and the additive may leak. At the same time, during the shaking process, the connection between the hose for sucking the additive and the liquid storage unit will also be shaken, and the hose may easily be detached from the liquid storage unit, resulting in the delivery device being unable to operate normally.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a dispensing device. A liquid storage tank for limiting and fixing a liquid storage unit is arranged in a storage cavity. When the dispensing device is vibrated, the tank wall of the liquid storage tank is used for limiting and supporting the liquid storage unit, thereby solving the problem of unstable limiting of the soft-package liquid storage unit by the dispensing device. At the same time, the liquid pumping component is connected to the internal liquid storage unit through a connecting port opened on the liquid storage tank, so that the liquid storage unit and the liquid pumping component for sucking additives are more stable, thereby solving the problem of unstable connection between the liquid storage unit and the suction end of the suction component.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a dispensing device, including a shell, which has a storage cavity inside; a liquid storage unit, which is made of flexible material, contains additives inside, and is arranged in the storage cavity; a liquid pumping component, which is provided with a liquid pumping end connected to the liquid outlet end of the liquid storage unit and is used to suck the additive; a liquid storage tank is provided in the storage cavity, and each liquid storage unit is respectively and one by one arranged in the liquid storage tank, and a connecting port is opened on the liquid storage tank, and the liquid pumping end is connected with the liquid storage unit in the liquid storage tank through the connecting port.

[0007] Furthermore, a second notch is provided at the top of the liquid storage tank, and a communication port is provided at the bottom of the liquid storage tank.

[0008] Furthermore, the liquid storage tank is a cylindrical structure with its axis vertically arranged, and the communication port is arranged coaxially with the liquid storage tank.

[0009] Furthermore, the liquid storage unit is a columnar structure coaxially arranged with the cylindrical liquid storage tank.

[0010] Furthermore, the inner circumferential surface of the liquid storage tank is in contact with the outer circumferential surface of the liquid storage unit.

[0011] Furthermore, at least one fold line is arranged on the outer peripheral surface of the liquid storage unit, and each fold line is respectively protruding or recessed on the outer peripheral surface of the liquid storage unit.

[0012] Furthermore, the liquid storage unit is a columnar structure, and each fold line is arranged around the outer peripheral surface of the columnar liquid storage unit.

[0013] Furthermore, the crease lines are annular structures arranged at intervals along the axial direction of the columnar liquid storage unit.

[0014] Furthermore, the outer peripheral surface of the columnar liquid storage unit is composed of a plurality of annular folded portions, each of which is arranged along the axial direction of the liquid storage unit; each folded portion is provided with a crease line corresponding to each other, and each folded portion is folded and compressed along the corresponding crease line.

[0015] Furthermore, each folding portion includes a first folding wall and a second folding wall which are coaxially connected in an annular manner. The first folding wall extends radially outwardly and obliquely, and the second folding wall extends radially inwardly and obliquely. The connection between the first folding wall and the second folding wall constitutes a crease line.

[0016] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: by arranging a liquid storage tank for limiting and fixing the liquid storage unit in the storage cavity, when the delivery device is vibrated, the tank wall of the liquid storage tank is used for limiting support to prevent the liquid storage unit from shaking in the storage cavity; at the same time, the liquid pumping component is connected with the internal liquid storage unit through the connecting port provided on the liquid storage tank, so that the liquid storage unit and the liquid pumping component for pumping additives are more stable, and the liquid storage unit is prevented from being separated from the pumping end;

[0017] Furthermore, by providing crease lines on the liquid storage unit, the liquid storage unit is folded and compressed along the crease lines during the compression process. This not only enables the liquid storage unit to be folded in a preset compression form and reduces the abutment force between the creases, thereby reducing the rebound force of the folded liquid storage unit. Furthermore, in the process of compressing the liquid storage unit, the work required for the delivery device to overcome the rebound force is reduced. Moreover, the creases inside the liquid storage unit are more regular, so that the additive liquid contained in the gaps between the creases can be discharged smoothly, effectively reducing the residual amount of additive inside the liquid storage unit, thereby improving the utilization rate of the additive and reducing waste.

[0018] At the same time, the invention has a simple structure, significant effects and is suitable for popularization and use.

[0019] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0021] Figure 1 is a schematic diagram of the structure of a delivery device according to an embodiment of the present invention;

[0022] Figure 2 is a schematic diagram of the internal structure of a liquid storage tank according to an embodiment of the present invention;

[0023] Figure 3 is a schematic structural diagram of a compressed liquid storage unit inside a liquid storage tank according to an embodiment of the present invention;

[0024] Figure 4 The embodiment of the present invention Figure 3 A local enlarged schematic diagram of area A.

[0025] In the figure: 1, shell; 101, storage chamber; 110, liquid storage tank; 111, second slot; 112, connecting port; 2, liquid storage unit; 210, folding part; 211, first folding wall; 212, second folding part; 213, crease line; 220, first supporting wall; 221, liquid outlet; 230, second supporting wall; 301, liquid extraction end.

[0026] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 1-3 As shown, in an embodiment of the present invention, a dispensing device is introduced, including a shell 1, which has a storage chamber 101 inside; a liquid storage unit 2, which is made of flexible material, contains additives inside, and is arranged in the storage chamber 101; a liquid extraction component, which is provided with a liquid extraction end 301 connected to the liquid outlet end 221 of the liquid storage unit 2, and is used to suck the additive; a liquid storage tank 110 is arranged in the storage chamber 101, and each liquid storage unit 2 is respectively and one by one arranged in the liquid storage tank 110, and a connecting port 112 is opened on the liquid storage tank 110, and the liquid extraction end 301 is connected with the liquid storage unit 2 in the liquid storage tank 110 through the connecting port 112.

[0031] Through the above-mentioned arrangement, by arranging a liquid storage tank 110 in the storage chamber 101 to limit and fix the liquid storage unit 2, when the dispensing device is vibrated, the tank wall of the liquid storage tank 110 is used for limiting support to prevent the liquid storage unit 2 from shaking in the storage chamber 101; at the same time, the liquid pumping component is connected to the internal liquid storage unit 2 through the connecting port 112 opened on the liquid storage tank 110, so that the liquid storage unit 2 and the liquid pumping component for sucking the additive are more stable, preventing the liquid storage unit 2 from being separated from the suction end.

[0032] In an embodiment of the present invention, the front surface of the shell 1 has a storage groove formed by being recessed inward, and the front side of the shell 1 is provided with an openable and closable door body, which covers the first notch of the groove body, and the door body and the storage groove cooperate to form a storage cavity 101.

[0033] In the embodiment of the present invention, a second notch 111 is formed on a horizontal side of the liquid storage tank 110 , and a communication port 112 is formed on a bottom wall of the liquid storage tank 110 .

[0034] In the embodiment of the present invention, a second notch 111 is provided on the front side of the liquid storage tank 110 to facilitate the user to take out and put in the liquid storage unit 2 .

[0035] In an embodiment of the present invention, the door body is in contact with the end surface of the groove wall at the outer periphery of the second groove 111 of the liquid storage tank 110, so as to seal the liquid storage tank 110 and prevent the liquid storage unit 2 of the soft package from falling into the storage tank through the gap between the second groove 111 and the door body, thereby improving the stability of fixing the liquid storage unit 2.

[0036] In another preferred embodiment of the present invention, a second notch 111 is provided at the top of the liquid storage tank 110, and a connecting port 112 is provided at the bottom of the liquid storage tank 110; so that the liquid storage unit 2 is placed into the groove barrel groove from the top of the liquid storage tank 110, and during the placement process of the liquid storage unit 2 from top to bottom, it is directly connected to the liquid extraction end 301 located at the bottom of the groove, so that the user can complete the installation of the liquid storage unit 2 in one action, thereby providing convenience for the assembly of the liquid storage unit 2; in addition, the second notch 111 connecting the liquid storage tank 110 and the storage tank is located above the liquid storage unit 2, and the liquid storage unit 2 can only be separated from the liquid storage tank 110 when it is subjected to a large degree of vibration in the up and down directions, thereby preventing the liquid storage unit 2 from being separated from the liquid storage tank 110 through the second notch 111.

[0037] In an embodiment of the present invention, the liquid storage tank 110 is a cylindrical structure with its axis vertically arranged, and the connecting port 112 is coaxially arranged with the liquid storage tank 110; when the liquid storage unit 2 is placed in the liquid storage tank 110 or taken out of the liquid storage tank 110, the additive may drip. By coaxially arranging the connecting port 112 in the liquid storage tank 110, the distance from each position of the outer periphery of the tank wall where the connecting port 112 is located to the connecting port 112 is equal, so as to ensure that the additive at each position can be discharged through the connecting port 112, and avoid condensation into blocks in the liquid storage tank 110.

[0038] In the embodiment of the present invention, the groove wall located at the periphery of the communication port 112 gradually slopes downward from the periphery to the communication port 112 to guide the dripping additives so that the liquid storage tank 110 can quickly and completely discharge the additives.

[0039] In an embodiment of the present invention, the liquid storage unit 2 is a columnar structure coaxially arranged with the cylindrical liquid storage tank 110; so that the outer peripheral surface of the liquid storage unit 2 is arranged in contact with, or partially abuts against, or is arranged at an equal distance from the outer wall of the liquid storage tank 110; when the dispensing device is vibrated, the peripheral side surfaces of the storage unit can be effectively supported respectively to prevent the storage unit from tipping over to one side.

[0040] In an embodiment of the present invention, the inner circumferential surface of the liquid storage tank 110 is in contact with the outer circumferential surface of the liquid storage unit 2; the peripheral wall of the liquid storage tank 110 supports the liquid storage unit 2 in a shape-matched manner, thereby increasing the contact area with the liquid storage unit 2. When the liquid storage unit 2 shakes in the liquid storage tank 110, the liquid storage unit 2 is prevented from being ruptured and the additive escaping due to excessive stress at some positions due to the small contact area.

[0041] In the embodiment of the present invention, at least one fold line 213 is disposed on the outer peripheral surface of the liquid storage unit 2 , and each fold line 213 is respectively protruding or recessed on the outer peripheral surface of the liquid storage unit 2 .

[0042] Through the above-mentioned configuration, by setting the crease line 213, the liquid storage unit 2 is folded and compressed along the crease line 213 during the compression process. This not only enables the liquid storage unit 2 to be folded in a preset compression form, reducing the abutment force between the creases, thereby reducing the rebound force of the folded liquid storage unit 2, and further reducing the work required for the delivery device to overcome the rebound force during the compression of the liquid storage unit 2. In addition, the creases inside the liquid storage unit 2 are relatively regular, so that the additive liquid contained in the gaps between the creases can also be discharged smoothly, effectively reducing the residual amount of additives inside the liquid storage unit 2, thereby improving the utilization rate of the additives and reducing waste.

[0043] In an embodiment of the present invention, the liquid storage unit 2 is a columnar structure, and each crease line 213 is respectively arranged around the outer peripheral surface of the columnar liquid storage unit 2; so that the outer surface of the liquid storage unit 2 is bent and folded radially inward and / or outward, so that the folding method of the liquid storage unit 2 is more regular, and the residual amount of additives between the creases is reduced.

[0044] In an embodiment of the present invention, the crease line 213 is a spiral line structure, so that the compressed crease forms a spiral inclined surface around the axis. The additives between the creases flow downward and accumulate through the inclined surface. When the pressure plate 120 squeezes the liquid storage unit 2, it is more conducive to the additives accumulated at this position to be discharged from the liquid storage unit 2.

[0045] In the embodiment of the present invention, the crease line 213 is a ring-shaped structure; the gaps between the creases of the compressed liquid storage unit 2 are respectively connected to the middle of the liquid storage unit 2, further reducing the residual amount of the additive between the creases.

[0046] In an embodiment of the present invention, the outer peripheral surface of the columnar liquid storage unit 2 is composed of a plurality of annular folding portions 210, and each folding portion 210 is arranged along the axial direction of the liquid storage unit 2; a crease line 213 is provided on each folding portion 210 in a one-to-one correspondence, and each folding portion 210 is folded and compressed along the corresponding crease line 213; the outer peripheral wall of the columnar liquid storage unit 2 can be compressed along the axial direction as a whole, thereby increasing the compression amplitude of the liquid storage unit 2 in the axial direction, so that the additive stored in the liquid storage unit 2 can be completely discharged.

[0047] In an embodiment of the present invention, each folding portion 210 respectively includes a first folding wall 211 and a second folding wall 212 which are coaxially connected in an annular manner. The first folding wall 211 extends radially outward and the second folding wall 212 extends radially inward and the connection between the first folding wall 211 and the second folding wall 212 constitutes a crease line 213.

[0048] Through the above-mentioned arrangement, a folding portion 210 with an angle is formed by arranging the first folding wall 211 and the second folding wall 212, so that the folding portion 210 can achieve its own folding compression by reducing the angle between the first folding wall 211 and the second folding wall 212; at the same time, the rebound force at the connection between the first folding wall 211 and the second folding wall 212 is small, even when the additive stored in the liquid storage unit 2 is almost used up, the folding portion 210 will not significantly affect the discharge of the additive due to the rebound force generated after folding.

[0049] In an embodiment of the present invention, the lengths of the first folding wall 211 and the second folding wall 212 of each folding portion 210 in the axial direction of the liquid storage unit 2 and the angles with the axis are respectively equal; so that after the liquid storage unit 2 is compressed, the first folding wall 211 and the second folding wall 212 of each folding portion 210 completely overlap in the axial direction, so that the compressed liquid storage unit 2 has a regular appearance, and each folding portion 210 is respectively in contact with the wall of the liquid storage tank 110, so as to avoid the liquid storage unit 2 from shifting during the compression process, thereby allowing the compressed liquid storage unit 2 to be stably maintained in a position coaxially arranged with the liquid storage tank 110.

[0050] In the embodiment of the present invention, the radial cross section of the columnar liquid storage unit 2 is a rectangular structure.

[0051] In the embodiment of the present invention, the radial cross section of the columnar liquid storage unit 2 is a rectangular structure with four arc chamfered corners; each folding portion 210 is correspondingly configured as a rectangular ring structure with arc corners.

[0052] In an embodiment of the present invention, the end surface of the liquid storage unit 2 at one end close to the bottom of the liquid storage tank 210 is set as a first support wall 220, and the hardness of the first support wall 220 is greater than the hardness of the side walls of the liquid storage unit 2; the liquid outlet end 221 of the liquid storage unit 2 is set on the first support wall 220; so as to support the liquid storage unit 2 in the radial direction, so that the liquid storage unit 2 can only be compressed in the direction close to the bottom of the liquid storage tank 110, so that the compressed liquid storage unit 2 can maintain a close fit with the bottom of the liquid storage tank 110, thereby improving the stability of the liquid storage unit 2 limit.

[0053] In an embodiment of the present invention, the inner surface of the first support wall 220 is provided with a liquid collecting profile protruding outward, and the liquid outlet end 221 is correspondingly arranged in the liquid collecting profile; when there is less additive in the liquid storage unit 2, the remaining additive is concentrated in the liquid collecting profile so that the additive can be fully utilized to avoid waste.

[0054] In an embodiment of the present invention, the liquid collecting fluid type is coaxially arranged with the liquid storage unit 2; preferably, the liquid outlet end 221 is coaxially arranged with the liquid collecting fluid type; so that the additives distributed at various positions on the surface of the first support wall 220 can flow into the liquid collecting fluid type, thereby improving the collection effect of the additives.

[0055] In the embodiment of the present invention, the outer periphery of the inner side surface of the first support wall 220 is inclined toward the outer side of the first support wall 220 to the liquid collecting profile.

[0056] In the embodiment of the present invention, the communication port 112 of each liquid storage tank 110 is arranged at the top of the liquid storage tank, and the liquid outlet of the liquid storage unit is arranged at the bottom of the liquid storage unit; so that the additive in the liquid storage unit flows toward the liquid outlet 221 under the influence of gravity.

[0057] In an embodiment of the present invention, the end surface of the liquid storage unit 2 at one end away from the bottom of the liquid storage tank 210 is set as a second support wall 230, and the hardness of the second support wall 230 is greater than the hardness of the peripheral wall of the liquid storage unit 2; the second support wall 230 is used to improve the structural strength of the liquid storage unit 2 in the radial direction, so that the liquid storage unit 2 is only compressed along the circumferential direction during the compression process, making the compressed liquid storage unit 2 more regular, preventing the liquid storage unit 2 from folding in an irregular manner, causing the internal additives to accumulate at the folded part.

[0058] In the embodiment of the present invention, the liquid storage tank 110 is detachably disposed in the housing 1 .

[0059] During use, when the liquid storage unit 2 is plugged in or out, a small amount of internal additives may be spilled into the liquid storage tank 110 , which may accumulate multiple times and lead to poor sanitary environment on the inner surface of the liquid storage tank 110 .

[0060] In view of the above problems, a detachable connection is provided between the shell 1 and the liquid storage tank 110 so that the user can take out the liquid storage tank 110 for cleaning, thereby solving the above problems. In addition, when taking out and placing the liquid storage unit 2, the liquid storage tank 110 can be removed first, and the liquid storage unit 2 can be placed in the liquid storage tank 110, and then the liquid storage tank 110 can be put back, and the liquid storage unit 2 can be connected to the liquid extraction end 301, so that there is no need to reserve the reserved space required for installing the liquid storage unit 2 in the shell 1, thereby reducing the overall volume of the shell 1.

[0061] In the embodiment of the present invention, the communication port of each liquid storage tank 110 is covered with a cover body respectively, so as to prevent the liquid storage unit 2 from escaping from the liquid storage tank 110 through the communication port 112 during transportation and shaking.

[0062] In an embodiment of the present invention, the delivery device is a built-in delivery device arranged inside the cleaning device.

[0063] In an embodiment of the present invention, the delivery device is an external delivery device arranged outside the cleaning equipment; preferably, the water outlet pipeline of the delivery device is connected to multiple cleaning equipment at the same time.

[0064] In an embodiment of the present invention, the cleaning device is a washing machine or a dishwasher.

[0065] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above in the preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A delivery device, comprising: A housing having a storage cavity therein; The liquid storage unit is made of a flexible material, contains additives, and is arranged in the storage cavity; A liquid pumping component is provided with a liquid pumping end connected to the liquid outlet end of the liquid storage unit and used for pumping additives; The invention is characterized in that a liquid storage tank is arranged in the storage cavity, each liquid storage unit is arranged in the liquid storage tank in a one-to-one correspondence, a connecting port is opened on the liquid storage tank, and the liquid extraction end is connected with the liquid storage unit in the liquid storage tank through the connecting port.

2. A delivery device according to claim 1, characterized in that: The top of the liquid storage tank is provided with a second notch, and the communication port is provided at the bottom of the liquid storage tank.

3. A delivery device according to claim 2, characterized in that: The liquid storage tank is a cylindrical structure with its axis vertically arranged, and the communication port is arranged coaxially with the liquid storage tank.

4. A delivery device according to claim 3, characterized in that: The liquid storage unit is a columnar structure coaxially arranged with the cylindrical liquid storage tank.

5. A delivery device according to claim 4, characterized in that: The inner circumference of the liquid storage tank is in contact with the outer circumference of the liquid storage unit.

6. A delivery device according to any one of claims 1 to 8, characterized in that: At least one fold line is arranged on the outer peripheral surface of the liquid storage unit, and each fold line is respectively protruded or recessed on the outer peripheral surface of the liquid storage unit.

7. A delivery device according to claim 6, characterized in that: The liquid storage unit is a columnar structure, and each fold line is arranged around the outer peripheral surface of the columnar liquid storage unit.

8. A delivery device according to claim 7, characterized in that: The crease lines are annular structures arranged at intervals along the axial direction of the columnar liquid storage unit.

9. A delivery device according to claim 8, characterized in that: The outer peripheral surface of the columnar liquid storage unit is composed of a plurality of annular folded portions, and each folded portion is arranged along the axial direction of the liquid storage unit; Each folding portion is provided with a crease line corresponding to each other, and each folding portion is folded and compressed along the corresponding crease line.

10. A delivery device according to claim 9, characterized in that: Each folding part comprises a first folding wall and a second folding wall which are coaxially connected in an annular manner. The first folding wall extends radially outwardly and obliquely, and the second folding wall extends radially inwardly and obliquely, and a connection between the first folding wall and the second folding wall forms a crease line.

Images