Non-metallic pumping device for discharging contents

Abstract

The present invention discloses a non-metallic pumping device for discharging contents. The elastic band of elastic material such as elastomer is used to ensure the pressure required when the pumping part rises and returns, thereby improving the stability of the pumping action. The elastic band with weak chemical resistance does not contact the container contents, and the elastic band will not be damaged or broken during use. It includes: a cylinder body, which is inserted into the container, including a support member provided with an inlet and a filling part, which is connected to the upper part of the filling part and provided with a lifting path; a pumping part, which includes a tube body that is inserted into the lifting path and rises and has a discharge path, a piston that is connected to the lower side end of the tube body to form a supply port and makes the filling part and the lifting path airtight, and a rod that is connected to the tube body to open and close the supply port; an elastic band, which is made of elastic material with a preset elastic force and is inserted outside the tube body, the upper side end is fixed to the upper side end of the support member and the lower side end is fixed to the connection of the tube body, and has a telescopic part that exerts elastic force in the compression direction to allow the pumping part to rise and return.

Description

Technical Field

[0001] The present invention discloses a non-metallic pumping device for discharging contents. All components can be made of non-metallic materials, so that the pumping device can be discharged immediately together with the container and recycled without separate disassembly or disassembly. The elastic band made of elastic materials such as elastomers can ensure the pressure required when the pumping part rises and returns, thereby improving the stability of the pumping action. In particular, the elastic band with weak chemical resistance does not contact the contents of the container, and the elastic band will not be damaged or broken during use. Background Art

[0002] A pumping device is used to discharge contents from a container filled with contents in the form of liquid, gel, cream, etc., and the pumping device has been widely used in various technical fields such as cosmetics, detergents, shampoos, etc.

[0003] A general pumping device is formed with the following structure, that is, a pumping part supported by spring elasticity is coupled to the head of a container connected to an injection tube, and an opening and closing ball is provided at the inlet inside the cap. When the pumping part is pressed, the spring is compressed to discharge the contents inside the head, and when the external force on the pumping part is released, the spring drives the pumping part to rise and return, so that the pressure inside the head is reduced and the ball that previously blocked the inlet is lifted and opened, thereby allowing the head to be refilled with contents.

[0004] However, the spring and the opening and closing ball of the existing pumping device are made of metal, while the remaining parts are made of synthetic resin (plastic) materials such as PET. When separating and discharging the product after use, in order to recycle it, it is necessary to disassemble or dismantle the pumping device and separate the metal and non-metal parts from each other, which is troublesome for consumers.

[0005] Therefore, in most cases, the pumping device and the container are discharged together or separated and then discharged. After the recycling company collects the product, it performs another separation operation for recycling. The additional separation operation for recycling requires a lot of cost and time, which greatly reduces the efficiency.

[0006] Therefore, there is an urgent need to develop a technology that uses synthetic resin of the same material as the container to make a container discharge mechanism including a pumping device, which can facilitate separation and recycling and reduce the cost and time required for recycling, thereby contributing to environmental protection.

[0007] Countries have also legalized or planned to regulate it at the government level.

[0008] As a related prior art, there can be cited Korean Patent Publication No. 10-2004-0062305.

[0009] The patent disclosure discloses a pump dispenser for discharging liquid contents from a container, comprising: a head having a discharge hole formed therein for a user to press; a shaft connected to the lower part of the head and having a guide hole connected to the discharge hole; a shell housing the shaft internally and having an inflow portion formed at the lower end thereof for allowing the contents to flow in; a guide unit installed at the lower part of the shaft, and guiding the contents inside the shell to the guide hole when the head is pressed; characterized in that it comprises: a spring, the upper end face of which is supported by the bottom face of the guide unit and the lower end face is supported by the lower side of the shell internally, having an elastic force for pressurizing the guide unit pressed by the head upward, and being formed of a synthetic resin material; and a plurality of ribs housing the lower end face of the spring internally, protruding toward the center of the inner side face of the shell so as to form a certain distance with the inner side face of the shell, and a support threshold formed in the middle part for the lower end face to hang against.

[0010] The structure of the disclosed patent uses a zigzag synthetic resin spring while still installing a ball on the inflow part. When the spring returns, the ball is lifted to open the inflow part to attract the contents into the shell, and then the ball descends to lock the inflow part and discharge the contents by a pumping action.

[0011] However, the disclosed patent has a structure in which the synthetic resin spring is exposed inside the housing, so the spring is directly exposed to and in contact with chemical substances such as surfactants contained in contents such as shampoo. Since the synthetic resin spring has weak chemical resistance, the synthetic resin spring may be damaged or even broken or lose its elastic force during use, resulting in frequent failures. Summary of the invention

[0012] [Technical issues to be solved]

[0013] The present invention aims to solve the above-mentioned problem. The purpose of the present invention is to provide a non-metallic pumping device for discharging contents, which can be made of all components only with non-metallic materials so that the used pumping device can be immediately discharged and recycled together with the container without separate decomposition or disassembly. The elastic band of elastic material such as elastomer can ensure the pressure required when the pumping part rises and returns, thereby improving the stability of the pumping action. In particular, the elastic band with weak chemical resistance does not contact the contents of the container and the elastic band will not be damaged or broken during use.

[0014] [Technical solution to the problem]

[0015] In order to achieve the above object, the non-metallic pumping device for discharging contents of the present invention comprises:

[0016] A cylinder body is inserted into the container, is provided with an inlet and a filling part, and includes a support member coupled to the upper part of the filling part and provided with a lifting path;

[0017] A pumping member includes a tube body inserted into the lifting path and raised and lowered and having a discharge path, a piston coupled to the lower end of the tube body to form a supply port and to make the filling part and the lifting path airtight, and a rod coupled to the tube body in a manner of opening and closing the supply port;

[0018] The elastic band is made of a stretchable material with a preset elastic force and is inserted outside the tube body. The upper end is fixed to the upper end of the support and the lower end is fixed to the tube body. It has a stretchable part that exerts elastic force in the compression direction to allow the pumping part to rise and return.

[0019] Furthermore, in the non-metallic pumping device for discharging contents of the present invention, the telescopic portion is composed of a plurality of elastic strips connected up and down.

[0020] Furthermore, in the non-metallic pumping device for discharging contents of the present invention, the telescopic portion is composed of cylindrical telescopic portions connected up and down.

[0021] At the same time, in the non-metallic pumping device for discharging contents of the present invention, the telescopic portion is composed of an integral elastic strip connected in a zigzag shape up and down along the outer edge of the tube body.

[0022]

Beneficial Effects

[0023] The non-metallic pumping device for discharging contents of the present invention has the following effects.

[0024] No metal springs or balls are used, so the pumping device can be immediately discharged and recycled together with the container without having to be disassembled or disassembled.

[0025] In particular, the elastic band of a stretchable material such as an elastomer alone can ensure the pressure required when the pumping member rises and returns, thereby improving the stability of the pumping action;

[0026] Furthermore, the chemically weak elastic band does not contact the contents of the container and the elastic band does not break or break during use, thereby reducing the possibility of malfunction;

[0027] By using elastic strips of various structures, the elastic restoring force of the elastic band is different, so that the effect of manufacturing a non-metallic pumping device according to factors such as product characteristics or usage age can be exerted. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a cross-sectional view showing a first embodiment of the present invention.

[0029] Figure 2 It is a three-dimensional diagram of the main parts of the first embodiment of the present invention.

[0030] Figure 3a , Figure 3b It is a front view of each action of the first embodiment of the present invention.

[0031] Figure 4 It is a perspective view showing a modified example of the first embodiment of the present invention.

[0032] Figure 5 It is a three-dimensional diagram of the main parts of the second embodiment of the present invention.

[0033] Figure 6 It is a perspective view showing a modified example of the second embodiment of the present invention.

[0034] Figure 7a , Figure 7b It is a three-dimensional diagram of the main parts of the third embodiment of the present invention.

[0035] Figure 8a , Figure 8b It is a three-dimensional diagram of the main parts of the fourth embodiment of the present invention.

[0036]

Explanation of symbols

[0037] P: Pump outlet

[0038] 10: cylinder body 20: tube body

[0039] 30: Piston 40: Rod

[0040] 50: elastic band 60A, 60B, 60C: first restraining ring

[0041] 70A, 70B, 70C: Second confinement ring DETAILED DESCRIPTION

[0042] The present invention can be modified in various ways and can have various embodiments. This specification will describe the implementation examples (or embodiments) in detail. However, the present invention cannot be limited to the disclosed embodiments. It should be understood that all replacements, deformations and modifications made within the scope of the technology and ideas of the present invention are included.

[0043] The same symbols in the drawings, especially the symbols with the same tens digit and units digit, or the same tens digit, units digit and English letters, represent components with the same or similar functions. Unless otherwise specified, the components represented by each symbol are parts that comply with the standard.

[0044] Moreover, the size or thickness of elements in each figure is exaggeratedly enlarged (or thickened) or reduced (or thinned) or simplified for reasons such as ease of understanding, and this shall not be used to limit the scope of protection of the present invention.

[0045] The terms used in this application are only used to describe a specific embodiment (or embodiment) and should not be used to limit the present invention. Unless it can be clearly distinguished in the context of the sentence, the singular expression also includes the plural case.

[0046] The terms "including" or "having" in this application only specify the existence of features, numbers, steps, actions, elements, parts or combinations thereof recorded in the specification, and shall not be considered as excluding in advance the existence of one or more other features, numbers, steps, actions, elements, parts or combinations thereof or the existence of additional possibilities.

[0047] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meanings as those generally understood by people with general knowledge in the technical field to which the present invention belongs. The meanings of terms defined in general dictionaries should be interpreted as consistent with the meanings they have according to the context of the relevant art, and shall not be interpreted abnormally or excessively formalistically unless clearly defined in this application.

[0048] The terms “first”, “second”, etc. described in this specification are only used to distinguish different elements from each other and are not limited to the manufacturing order. The names may be inconsistent in the detailed description of the invention and the claims.

[0049] When describing the non-metallic pumping device for discharging contents of the present invention, for the sake of convenience of description, an imprecise and approximate direction reference is used, the direction of gravity is taken as the lower side and up, down, left and right are directly defined in the direction seen. Unless otherwise specified, other detailed descriptions of other drawings and the claims are also described after defining the directions according to this reference.

[0050] The non-metallic pumping device for discharging contents of the present invention will be described below with reference to the accompanying drawings.

[0051] The present invention discloses a non-metallic pumping device for discharging contents of a container such as shampoo, as shown in the first embodiment. Figures 1 to 3b , FIG. 1 shows a modified example of the first embodiment Figure 4 , FIG. 2 shows a second embodiment Figure 5 , FIG. 1 shows a modified example of the second embodiment Figure 6 , FIG. 3 shows a third embodiment Figure 7a , Figure 7b , FIG. 4 shows a fourth embodiment Figure 8a , Figure 8b As shown in the figures such as, including:

[0052] The cylinder block 10 is inserted into the interior of the container, provided with an inlet 11 and a filling portion 12, and includes a support member 13 coupled to the upper portion of the filling portion 12 and provided with a lifting path 131;

[0053] The pumping member P includes a tube body 20 that is inserted into the lifting path 131 and lifted and lowered and has a discharge path 21, a piston 30 that is coupled to the lower end of the tube body 20 to form a supply port 31 and airtightly seals between the filling portion 12 and the lifting path 131, and a rod 40 that is coupled to the tube body 20 in a manner of opening and closing the supply port 31;

[0054] The elastic band 50 is made of a stretchable material having a preset elastic force and is disposed outside the tube body 20. The upper end is fixed to the upper end of the support member 13 and the lower end is fixed to the tube body 20. It has a telescopic portion that exerts an elastic force in the compression direction to cause the pumping member P to rise and return.

[0055] The inlet 11 at the lower side of the cylinder block 10, the filling portion 12 above the inlet 11, and the lifting path 131 above the filling portion 12 communicate with each other. The inlet 11 is further coupled with a content discharge pipe, and a closing member is provided inside the inlet 11.

[0056] The support member 13 forms a blocking end (not shown) on the inner peripheral surface of the upper end of the lifting path 131, and the following first restraint ring 60A is blocked and fixed by it.

[0057] The closing member opens and closes the inlet 11 according to the pressure change of the filling portion 12. As Figure 1 shown, it can be configured as follows, that is, a closing ball 14 made of a synthetic resin material such as plastic and capable of lifting and lowering at the upper portion of the inlet 11, or, as Figure 1 shown in the right lower circular internal cross-sectional view of, a hemispherical shielding portion 15 that is rotatably coupled up and down at the upper portion of the inlet 11.

[0058] The tube body 20 is in a tube shape and the discharge path 21 is formed through in the length direction. The discharge port 221 of the pumping head 22 coupled to the upper end of the tube body 20 communicates with the discharge path 21.

[0059] At the same time, the tube body 20 forms a blocking portion 23 on the outer peripheral surface of the lower end for the following second restraint ring 70A to be blocked and fixed, and a pressurizing portion 24 for blocking the piston 30 is formed at the lower portion of the blocking portion 23.

[0060] The piston 30 is inserted into the outside of the lifting guide part 25 connected to the lower part of the pressurizing part 24 and is provided with a soft wing part 32 protruding from the outer peripheral surface of the tube and tightly attached to the inner wall surface of the cylinder body 10. The wing part 32 has a certain friction coefficient with the inner wall surface of the cylinder body 10.

[0061] At this time, the wing portion 32 is connected to have an X-shaped cross section that is vertically symmetrical with respect to the tube portion, and the piston 30 is coupled to the lifting guide portion 25 so as to be able to rise and fall.

[0062] The piston 30 prevents the contents of the filling portion 12 from flowing into the interior of the support member 13 through the wing portion 32 , and generates a pumping pressure through the wing portion 32 when descending so that the contents of the filling portion 12 are discharged through the tube body 20 .

[0063] The rod 40 penetrates the supply port 31 and is clamped into the lower end of the discharge passage 21 of the tube body 20 , and is provided with a coupling plate 41 that forms a clearance portion inside the discharge passage 21 and forms a meshing structure with the lower end of the supply port 31 .

[0064] The rod 40 moves up and down together with the tube body 20 , and moves down together with the tube body 20 to open the supply port 31 , and moves up together with the tube body 20 to close the supply port 31 .

[0065] The elastic band 50 is classified into first to third embodiments according to the shape of the elastic portion.

[0066] The first and third embodiments of the present invention have a strip-shaped telescopic portion, while the second embodiment has a cylindrical telescopic portion. This is the difference between them. This structural difference makes the first and second restraint rings 60A and 70A have different shapes.

[0067] In particular, the elastic band 50 is made of a stretchable material such as elastomer, synthetic rubber, natural rubber, silicone, etc., which can be stretched when a certain degree of pressure is applied and has a strong elastic recovery force when the external pressure is released, in order to generate an elastic force that can be pumped out when compressed. In particular, it is preferably made of an elastomer, specifically PP elastomer.

[0068] The elastic band 50 is made of a stretchable material having the above characteristics, and thus inevitably has a lower durability (ie, chemical resistance) to the contents in the container (eg, chemical substances such as surfactants in shampoo) than general plastics.

[0069] In the present invention, since the piston 30 prevents the contents from flowing into the support member 13 when the elastic band 50 is built into the support member 13, there will be no reduction in durability due to contact with surfactants and the like. Therefore, there will be no problems such as damage or even breakage of the elastic band 50 during use.

[0070] First, the first embodiment is described. Figures 1 to 3b As shown, the elastic band 50 is composed of a plurality of elastic strips 51 forming the stretchable portion.

[0071] Specifically, the elastic band 50 includes an upper fixed ring portion 52, a lower lifting ring portion 53, and a plurality of elastic strips 51 connecting the fixed ring portion 52 and the lifting ring portion 53 to form a telescopic portion.

[0072] The elastic strips 51 are arranged at intervals along the outer edge direction at a preset interval to form retaining grooves 511 between the elastic strips 51 .

[0073] At the same time, the present invention also includes:

[0074] A first restraining ring 60A, having a first fixing protrusion 61 blocked by the upper side end of the blocking groove 511, is inserted into the fixing ring portion 52 and fixes the fixing ring portion 52 to the upper side end of the support member 13;

[0075] The second restraining ring 70A has a second fixing protrusion 71 blocked by the lower end of the blocking groove 511 , is inserted outside the lifting ring portion 53 and fixes the lifting ring portion 53 to the lower end of the tube body 20 .

[0076] The first restraint ring 60A is provided with a lifting hole 62 for the tube body 20 to be inserted and lifted and lowered. The first fixing protrusion 61 protrudes from the outer peripheral surface. The flange of the fixing ring portion 52 or the end portion of the first fixing protrusion 61 is blocked and fixed by the blocking end of the support member 13, so that the fixing ring portion 52 is fixed to the support member 13 in a state of being blocked by the first fixing protrusion 61.

[0077] The second restraint ring 70A has the second fixing protrusion 71 protruding from the inner circumference, and the terminal end of the second fixing protrusion 71 is clamped into the fixing hole 72 of the tube body 20. The second restraint ring 70A is blocked by the blocking portion 23 of the tube body 20 in the form of wrapping the lower side end of the elastic strip 51, so that the lifting ring portion 53 is fixed to the tube body 20 in the form of being blocked by the second fixing protrusion 71.

[0078] at the same time, Figure 4This is a modified example of the first embodiment. The lifting ring portion 53 can be formed in a circular connection. The plurality of elastic strips 51 and the blocking grooves 511 , and the first and second restraining rings 60A and 70A have the same structure.

[0079] In the present invention thus constructed, first, when no external pressure is applied to the pump head 22 , the elastic force caused by the compression of the elastic strip 51 causes the pump member P to rise to the upper side of the cylinder body 10 .

[0080] Moreover, when the pump head 22 of the pump member P is pressed, when the fixing ring portion 52 is fixed to the supporting member, only the lifting ring portion 53 descends to stretch the elastic strip 51 and allow the tube body 20 to begin to descend. At this time, due to the friction coefficient of the piston 30, the tube body 20 and the rod 40 descend first (that is, the piston 30 rises based on the tube body 20), thereby opening the supply portion.

[0081] When the tube body 20 continues to descend with the supply port 31 open, the pressurizing portion 24 pressurizes the piston 30 and descends together. As described above, the pumping member P continues to descend, stretching the elastic strip 51 and generating elastic force in the compression direction.

[0082] Moreover, the downward pressure of the piston 30 is applied to the opening and closing part, so that the opening and closing ball 14 or the shielding part 15 seals the inlet 11, and a pumping pressure caused by the piston 30 is generated in the filling part 12. The pumping pressure generated in this way discharges the content of the filling part 12 to the supply port 31, and the content that has passed through the discharge path 21 is discharged from the discharge port 221 of the pump head 22.

[0083] Moreover, when the pumping piece P is released after the contents are discharged, the elastic strip 51 is compressed to drive the tube body 20 to rise and return. At this time, due to the friction coefficient of the piston 30, the tube body 20 and the rod 40 first rise together and lock the supply port 31. In this state, the rod 40 causes the piston 30 to rise together.

[0084] Moreover, the rising pressure of the piston 30 causes the opening and closing ball 14 to rise or the shielding part 15 to rotate upward to open the inlet 11. The suction pressure of the piston 30 is applied through the inlet 11 opened in this way to pump the contents in the container to the filling part 12 for refilling.

[0085] Next, the second embodiment is described. Figure 5 As shown, the telescopic portion is composed of a cylindrical telescopic portion 54 connected up and down.

[0086] Specifically, the elastic band 50 includes an upper fixed ring portion 52 , a lower lifting ring portion 53 , and a cylindrical telescopic portion 54 connecting the fixed ring portion 52 and the lifting ring portion 53 .

[0087] The cylindrical telescopic portion 54 has a stronger elastic force than the elastic strip 51 .

[0088] At the same time, the present invention also includes:

[0089] A first restraining ring 60B is inserted into the fixing ring portion 52 and fixes the fixing ring portion 52 to the upper side end of the support member 13;

[0090] The second restraint ring 70B is inserted outside the lifting ring portion 53 and fixes the lifting ring portion 53 to the lower end of the tube body 20 .

[0091] The second embodiment is different from the first embodiment only in that it has a cylindrical telescopic portion 54 instead of a plurality of strip-shaped telescopic portions, but the operating principle is the same. Since the retaining groove 511 is not provided, the first and second restraint rings 60A and 70A are constructed in a ring shape without additional fixing protrusions.

[0092] and, Figure 6 This is a modified example of the second embodiment. The elastic band 50 includes a cut portion 541 that removes a portion of the cylindrical telescopic portion 54. The cut portion 541 weakens the elastic force of the cylindrical telescopic portion 54 to make the cylindrical telescopic portion 54 easier to stretch.

[0093] Next, the third embodiment is described. Figure 7a , Figure 7b As shown, the telescopic portion includes an integral elastic strip 55 connected in a zigzag shape up and down along the outer edge of the tube body 20 .

[0094] Specifically, the integrated elastic strip 55 is provided with a plurality of upper bending portions 551 and lower bending portions 552 bent in an oblique direction at the upper and lower parts.

[0095] At the same time, the present invention also includes:

[0096] The first restraining ring 60C has a first blocking protrusion 63 blocked by the upper folded portion 551, is inserted into the upper side portion of the integral elastic strip 55 and fixes the upper folded portion 551 to the upper side end of the support member 13;

[0097] The second restraining ring 70C, which has a second blocking protrusion 73 blocked by the lower folded portion 552 , is inserted into the lower side portion of the integral elastic strip 55 and fixes the lower folded portion 552 to the lower side end of the tube body 20 .

[0098] Different from the elastic strip 51 of the first embodiment, the integrated elastic strip 55 is a single strip connected in a zigzag shape without the fixing ring portion 52 and the lifting ring portion 53 , and the tensioning pressure is weaker than that of the first and second embodiments.

[0099] The cross section of the integral elastic strip 55 may also be circular.

[0100] Moreover, the first restraint ring 60C is fixed by the blocking end of the support member 13 , and the first blocking protrusion 63 protruding from the outer peripheral surface fixes the upper folded portion 551 to the support member 13 .

[0101] The second restraint ring 70C is fixed by the blocking portion 23 of the tube body 20 , and the second blocking protrusion 73 protruding from the outer circumferential surface fixes the lower folded portion 552 to the tube body 20 .

[0102] The third embodiment differs from the first embodiment only in the shape of the telescopic portion, and the operating principles are the same. Compared with the first and second embodiments, the third embodiment has the following advantages, namely, it allows the elderly and the weak to pump out the contents more easily for use.

[0103] Meanwhile, the fourth embodiment using the first and second confinement rings 60C and 70C shown in the third embodiment is as follows: Figure 8a , Figure 8b As shown, the telescopic portion is composed of a plurality of annular elastic strips 56 arranged along the outer edge of the tube body 20 .

[0104] The upper and lower ends of the annular elastic strip 56 are blocked and fixed by the first and second blocking protrusions 63 and 73 of the first and second restraining rings 60C and 70C, respectively, and can provide a stronger telescopic force than that of the fourth embodiment.

[0105] The first to fourth embodiments use an elastic band 50 with strong elasticity of the elastomer series to replace the existing metal or plastic material spring, and can play the same pumping effect as the prior art with a non-metallic material. This is its advantage. In particular, the non-exposed structure of the elastic band 50 of the support member 13 is used to prevent the contents in the container from contacting the elastic band 50. Therefore, even if a material with weaker chemical resistance such as the elastomer series is used, the elastic band 50 will not be damaged or broken, thereby reducing the possibility of failure.

[0106] The foregoing text, in conjunction with the accompanying drawings, mainly describes the present invention using a non-metallic pumping device for discharging contents. However, persons skilled in the art can make various modifications, changes and substitutions to the present invention, and these modifications, changes and substitutions should be interpreted as falling within the scope of protection of the present invention.

Claims

1. A non-metallic pumping device for discharging contents, include: A cylinder body (10) is inserted into the interior of the container and is provided with an inlet (11) and a filling portion (12), and includes a support member (13) coupled to the upper portion of the filling portion (12) and provided with a lifting path (131); A pumping member (P) comprising a tube body (20) inserted into the lifting path (131) and raised and lowered and having a discharge path (21), a piston (30) coupled to the lower end of the tube body (20) to form a supply port (31) and to provide airtightness between the filling portion (12) and the lifting path (131), and a rod (40) coupled to the tube body (20) in a manner to open and close the supply port (31); The elastic band (50) is made of a stretchable material with a preset elastic force and is inserted outside the tube body (20). The upper end is fixed to the upper end of the support member (13) and the lower end is fixed to the tube body (20). The elastic band (50) has a stretchable portion that exerts elastic force in a compression direction to allow the pumping member (P) to rise and return. The invention is characterized in that the elastic band (50) comprises an upper fixed ring portion (52), a lower lifting ring portion (53), and a plurality of elastic strips (51) connecting the fixed ring portion (52) and the lifting ring portion (53) to form the telescopic portion, the elastic strips (51) being arranged at intervals at a preset interval along the outer edge direction to form a blocking groove (511) between the elastic strips (51), and the non-metallic pumping device for discharging the contents further comprises: A first restraining ring (60A) having a first fixing protrusion (61) blocked by the upper side end of the blocking groove (511), inserted into the fixing ring portion (52) and fixing the fixing ring portion (52) to the upper side end of the support member (13); The second restraining ring (70A) has a second fixing protrusion (71) blocked by the lower end of the blocking groove (511), is inserted outside the lifting ring part (53) and fixes the lifting ring part (53) to the lower end of the tube body (20).

Images