Outer ring belt type suction nozzle assembly convenient to recycle

Abstract

The outer ring belt type suction nozzle assembly convenient to recycle comprises a suction nozzle pipe and a suction nozzle cover, the suction nozzle cover comprises a cover body, a binding ring and a bendable outer ring belt, the binding ring is arranged below the cover body and keeps rotating connection with the suction nozzle pipe, the outer ring belt is arranged around the outer circumferential wall of the cover body, the first end of the outer ring belt is located on the outer circumferential wall of the cover body, and the second end of the outer ring belt is located on the outer circumferential wall of the cover body. The second end of the outer ring belt is connected to the binding ring, and the extending direction of the first end to the second end is the same as the rotating uncovering direction of the cover body; the outer ring belt is located on the outer side of the peripheral wall of the cover body, a first breakpoint connecting structure is arranged between the inner side wall of the outer ring belt and the peripheral wall of the cover body in the horizontal direction for connection, a second breakpoint connecting structure is arranged between the bottom face of the cover body and the binding ring in the vertical direction for connection, the breakpoint connecting structures are stressed to be broken when the cover is opened, and the cover body is unscrewed to be separated from the suction nozzle pipe. The binding ring is still rotationally connected to the suction nozzle pipe, and the cover body is connected with the suction nozzle pipe through the outer ring belt and the binding ring, so that the suction nozzle cover is prevented from being independently discarded, and the suction nozzle cover is convenient to recycle.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging, and in particular relates to an outer ring belt type suction nozzle assembly which is convenient for recycling. Background Art

[0002] The nozzle is mainly used in soft packaging bags with mouths. The soft packaging bag combined with the nozzle is called a nozzle bag, which is mainly used for filling liquid foods such as beverages and jellies. Compared with hard packaging, it has the advantages of convenient sucking and carrying.

[0003] In order to prevent the nozzle from being contaminated and food from spilling, the nozzle is provided with a nozzle cover for sealing. However, most of the existing nozzle covers are completely separated from the nozzle bag after opening. One of the main application areas of the nozzle bag is the field of children's food. The nozzle cover that is separated separately after opening is easy to be accidentally swallowed by children, causing suffocation, which poses a great safety hazard.

[0004] On the other hand, Europe and the United States are the applicant's main sales markets. Based on environmental protection and recycling considerations, the EU Plastics Directive 2019 / 204 requires that from July 2024, the bottle caps of plastic beverage bottles must be connected to the bottle body during their entire use process. The nozzle cover separated from the soft nozzle bag is easily discarded separately, making it difficult to recycle the nozzle cover and the nozzle bag together, which does not meet the EU requirements.

[0005] In order to solve the above problems, the applicant developed and designed the nozzle cover to meet environmental protection requirements, and applied for a patent technology with publication number CN220866077U. The patent technology discloses a nozzle cover, including an inner cover and a safety ring, and an axial airway is formed between the inner cover and the safety ring; the safety ring is provided with at least one notch penetrating its side to form a radial airway, and the notch extends through the lower end of the nozzle, and at least one deformable strap is provided in the notch.

[0006] The applicant's prior application opens a notch on the side wall of the nozzle cover to accommodate the strap, so that the nozzle cover cannot be completely separated from the soft packaging strap, thereby avoiding the nozzle cover from being discarded alone as much as possible, which is conducive to recycling. At the same time, even if a child puts the nozzle cover in his mouth, he cannot swallow it, which can basically avoid the safety hazard of suffocation caused by swallowing.

[0007] However, for a single-layer nozzle cover with a simple shape and a thin cover wall thickness, the strap shape design previously applied for is difficult to integrate therein and is also difficult to produce. Therefore, the inventor aims to provide a nozzle cover structure with greater versatility and convenient recycling. Summary of the invention

[0008] In view of the problems in the related art, the utility model proposes an outer ring belt type suction nozzle assembly that is easy to recycle to overcome the above technical problems existing in the existing related art.

[0009] The technical solution of the utility model is achieved in this way:

[0010] An outer ring belt type suction nozzle assembly that is easy to recycle, comprising a suction nozzle tube and a suction nozzle cover, wherein the suction nozzle cover comprises a cover body, a binding ring and a bendable outer ring belt;

[0011] The cover body is screwed and installed on the nozzle tube, the binding ring is arranged below the cover body and is kept rotatingly connected to the nozzle tube, and the binding ring and the cover body are kept connected by the outer ring belt;

[0012] The outer ring band is arranged around the outer peripheral wall of the cover body, the first end of the outer ring band is located on the outer peripheral wall of the cover body, the second end of the outer ring band is connected to the binding ring, and the direction in which the first end extends to the second end is the same as the direction in which the cover body is rotated to open the cover;

[0013] The outer ring belt is located outside the outer peripheral wall of the cover body, and a first breakpoint connection structure is provided in the horizontal direction between the inner side wall of the outer ring belt and the outer peripheral wall of the cover body for connection, and a second breakpoint connection structure is provided in the vertical direction between the bottom surface of the cover body and the binding ring for connection.

[0014] First, when the cover is grasped and rotated to open, the first breakpoint connection structure and the second breakpoint connection structure are broken by force, the cover is unscrewed and separated from the nozzle tube, and the binding ring is still rotatably connected to the nozzle tube. The cover is connected to the binding ring through the outer ring belt, and then connected to the nozzle tube, so that children cannot swallow the cover, and the nozzle cover is prevented from being discarded alone, which is convenient for recycling;

[0015] Secondly, compared with the prior application, the connection design of the utility model only needs to add an outer ring belt on the outside of the original cover product, which is more versatile and can be applied to various cover shapes. At the same time, the addition of the outer ring belt does not change the internal structure of the cover. The original automatic assembly line and nozzle tube mold can continue to be used, which can effectively control the cost of producing new products.

[0016] Thirdly, the longer outer ring design ensures that the cover body is at a certain distance from the nozzle tube after opening the cover, so as to prevent the cover body from being too close to the nozzle tube during sucking, thereby preventing the lip skin from being scratched or the cover body from being contaminated with the contents of the soft packaging bag.

[0017] Finally, the utility model is mainly used in soft packaging bags for children's food. The single-layer nozzle cover in this application field is generally small in size and not easy to grasp and pinch to apply force. At the same time, it is also necessary to continuously pursue "reducing the difficulty of opening the cover" from the perspective of structural design in consideration of the small hand strength of children. The first breakpoint connection structure and the second breakpoint connection structure of the utility model are directly connected to the cover body from different directions. One is to fix the position and shape of the outer ring belt, and the other is to achieve that when the force is applied to unscrew the cover body, the two breakpoint connection structures are pulled at the same time, which can disconnect the first breakpoint connection structure and the second breakpoint connection structure more directly and quickly, making it convenient to open the cover. Third, the purchaser can intuitively judge whether the product has been opened by whether the breakpoint connection structure is broken, which has an anti-theft effect.

[0018] Preferably, the first breakpoint connection structure includes a plurality of first broken bridges, and the plurality of first broken bridges are evenly distributed along the length direction of the outer ring belt;

[0019] Before the cover is opened, a plurality of the first broken bridges are formed by the inner side wall of the outer ring band protruding toward the central axis direction of the cover body, and the width of the first broken bridges gradually decreases toward the central axis direction to form the narrow ends of the first broken bridges, and the narrow ends of the first broken bridges are connected to the outer peripheral wall of the cover body.

[0020] The design function of the above-mentioned first broken bridge is to make the first broken bridge break from the narrow end, so that all the first broken bridges are away from the suction nozzle tube along with the outer ring belt after the cover is opened, so as to avoid the first broken bridge protruding outward on the surface of the suction nozzle tube from scratching the lips of the eater.

[0021] Preferably, the second breakpoint connection structure includes a plurality of second break bridges;

[0022] Before the cover is opened, a plurality of the second broken bridges are formed by protruding downward from the bottom surface of the cover body, and the width of the second broken bridges gradually decreases toward the binding ring to form the narrow end of the second broken bridge, and the narrow end of the second broken bridge is connected to the top of the binding ring.

[0023] The design function of the above-mentioned second broken bridge is to make the second broken bridge break from the narrow end, so that all the second broken bridges are away from the suction nozzle tube as the cover body is opened, avoiding the second broken bridge on the surface of the suction nozzle tube from scratching the lips of the eater.

[0024] Preferably, the bottom surface of the cover body protrudes downward to form at least two lifting blocks, and the bottom end of the lifting block is lower than the bottom end of the second broken bridge;

[0025] The top of the binding ring is provided with a plurality of gaps adapted to the lifting step blocks, and the gaps are formed by being sunken downward or penetrating from the top of the binding ring;

[0026] When the cover is not opened, the cover body and the binding ring are kept connected through the second breakpoint connection structure, and the lifting step is sunken into the air-avoiding gap;

[0027] When the cover body is grasped and rotated to open, the first side wall of the lifting step block rotates in the circumferential direction and collides with the second side wall of the air avoidance gap and is then lifted up and away from the air avoidance gap. The "lifting" action of the lifting step block gives the first breakpoint connection structure and the second breakpoint connection structure a "sudden" upward force, thereby assisting the first breakpoint connection structure and the second breakpoint connection structure to break, making it easier to open the cover.

[0028] Preferably, the lifting step and the second broken bridge are located in the same circumferential direction and distributed circumferentially, and each of the lifting step has second broken bridges on both sides in the circumferential direction, so that the "sudden" upward force generated by the "lifting" action of the lifting step is evenly distributed at various positions of the cover body.

[0029] When the cover body is grasped and rotated to open the cover body, the first side wall is inclined downward from the bottom surface of the cover body and in the direction of tightening the cover body, and the second side wall is inclined upward from the bottom surface of the air avoidance gap and in the direction of twisting the cover body open. The first side wall and the second side wall are both inclined surfaces and can slide relative to each other, so that the lifting step can be labor-saving and smoothly separated from the air avoidance gap.

[0030] The side wall on the lifting step opposite to the first side wall is set as the third side wall, and the side wall in the air avoidance gap opposite to the second side wall is set as the fourth side wall. The third side wall and the fourth side wall are both vertical surfaces, and their functions are: first, to prevent the eater from turning the cover in that direction to open the cover, and to remind the eater of the correct direction to open the cover; second, when the cover is turned again to close the cover, the design of the vertical surface can provide a feeling of sudden snapping into place, reminding the eater that the cover has been tightened.

[0031] Preferably, the binding ring has an annular top, the outer diameter of the annular top is greater than the width of the outer peripheral wall of the cover body, and the inner diameter of the annular top is smaller than the width of the outer peripheral wall of the cover body.

[0032] The position of the annular top close to the central axis is set as the inner ring part, and the position away from the central axis is set as the outer ring part.

[0033] The outer ring band is located above the outer ring portion, the second end of the outer ring band is connected to the top surface of the outer ring portion, the outer side of the second end is flush with the outer side of the outer ring portion, and the outer side of the outer ring band before the cover is opened does not exceed the outer side of the outer ring portion, so as to avoid the outer ring band being too convex and reduce collision or hooking;

[0034] The second breakpoint connection structure and the lifting step block are located on the top surface of the inner ring portion, the inner sides of the second breakpoint connection structure and the lifting step block are flush with the inner sides of the inner ring portion, the inner ring portion is recessed downward or penetrated to form a plurality of air avoidance gaps, and each structure is compact and reasonable.

[0035] Preferably, the bottom of the outer ring portion protrudes downward and extends to form a cylindrical structure, and the cylindrical structure serves as the main body of the binding ring;

[0036] The bottom of the inner ring portion is suspended, and a limiting protrusion is provided below the inner ring portion. The outer wall of the nozzle tube is provided with an outwardly protruding ring clamping groove along the circumferential direction, and the notch of the ring clamping groove faces the outer periphery. The limiting protrusion is assembled in the clamping ring groove by pressing, and then rotated to engage in the ring clamping groove. The groove width of the ring clamping groove is greater than the maximum height of the limiting protrusion in the vertical direction, and the limiting protrusion has a certain upward and downward movable space in the ring clamping groove.

[0037] More preferably, the ring groove is formed by an upper ring rib and a lower ring rib distributed along the axial direction of the nozzle tube, and the outer width of the lower ring rib is greater than the outer width of the upper ring rib;

[0038] The outer width of the upper ring rib is greater than the inner diameter of the inner ring portion, and the upper ring rib prevents the inner ring portion from entering the groove of the ring clamping groove. The outer width of the lower ring rib is greater than the outer width of the bottom end of the binding ring, serving as a structure to prompt that the limiting protrusion is assembled in place.

[0039] Preferably, the binding ring is pressed to cause elastic deformation so that the protrusion is inserted into the ring clamping groove;

[0040] Essentially, as long as the limiting protrusion is convex inwardly and has a suitable size, it can achieve the effect of rotating and engaging with the ring groove. Preferably, the limiting protrusion is composed of a plurality of protrusions, and the protrusions are distributed along the circumference of the inner wall of the cylindrical structure. The limiting protrusions with a non-continuous structure and spaced apart are more convenient for the binding ring to undergo elastic deformation.

[0041] The outer circumference of the ring clamping groove is cut at two opposite positions to form planes, which reduces the width of the ring clamping groove and facilitates the limiting protrusion to be inserted into the ring clamping groove. The opposite side that has not been cut maintains the original width, making it difficult for the ring clamping groove to fall out after being inserted.

[0042] Preferably, the bottom surface of the protrusion is an inclined surface, and the bottom surface of the protrusion extends and inclines upward and toward the central axis from the inner side wall of the cylindrical structure, so as to facilitate guiding the limiting protrusion to smoothly snap into the ring groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is one of the structural diagrams of Example 1;

[0044] Figure 2 This is the second structural diagram of Example 1;

[0045] Figure 3 This is the third structural diagram of Example 1 (open cover state);

[0046] Figure 4 is a top view of Example 1;

[0047] Figure 5 for Figure 4 AA section view;

[0048] Figure 6 for Figure 5 A magnified image of point A;

[0049] Figure 7 It is a schematic structural diagram of the nozzle cover of Example 1;

[0050] Figure 8 This is one of the structural diagrams of Example 2;

[0051] Fig. 9 This is the second structural diagram of Example 2;

[0052] Fig.10 It is a structural schematic diagram of the suction nozzle tube of the utility model.

[0053] Marking Description:

[0054] 1. Nozzle cover;

[0055] 101, cover; 101a, second broken bridge; 101b, lifting step; 101c, convex strip;

[0056] 102, outer ring belt; 102a, first end; 102b, second end; 102c, first broken bridge;

[0057] 103, binding ring; 103a, air-avoiding gap; 103b, outer ring portion; 103c, inner ring portion; 103d, cylindrical structure; 103e, protrusion;

[0058] 2. Suction nozzle; 201. Upper annular rib; 202. Lower annular rib; 203. Plane. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate directions or positional relationships 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, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0061] Example 1

[0062] like Figures 1 to 7 As shown, an outer ring belt type suction nozzle assembly which is easy to recycle includes a suction nozzle tube 2 and a suction nozzle cover 1.

[0063] The nozzle cover 1 includes a cover body 101, a binding ring 103 and a flexible outer ring band 102. The cover body 101 is screwed and installed on the nozzle tube 2. The binding ring 103 is arranged under the cover body 101 and remains rotatably connected to the nozzle tube 2. The binding ring 103 and the cover body 101 are kept connected through the outer ring band 102.

[0064] The outer ring band 102 is arranged around the outer peripheral wall of the cover body 101 and is nearly one circle. The first end 102a of the outer ring band 102 is located on the outer peripheral wall of the cover body 101. Specifically, in this embodiment, the first end 102a is located on the outer peripheral wall of the cover body 101 close to the bottom end, and the bottom end of the first end 102a is flush with the bottom end of the outer peripheral wall of the cover body 101. The second end 102b of the outer ring band 102 is connected to the binding ring 103. The direction in which the first end 102a extends to the second end 102b is the same as the direction in which the cover body 101 is rotated to open the cover, so that the rotation to open the cover can be realized.

[0065] The outer ring band 102 is located outside the outer peripheral wall of the cover body 101, and a first breakpoint connection structure is provided in the horizontal direction between the inner wall of the outer ring band 102 and the outer peripheral wall of the cover body 101 for connection, and a second breakpoint connection structure is provided in the vertical direction between the bottom surface of the cover body 101 and the binding ring 103 for connection.

[0066] When the cover body 101 is grasped and rotated to open the cover, the first breakpoint connection structure and the second breakpoint connection structure are broken by force, and the cover body 101 is unscrewed and separated from the suction nozzle tube 2, and the binding ring 103 still remains rotatably connected to the suction nozzle tube 2. The cover body 101 is connected to the binding ring 103 through the outer ring band 102, and then connected to the suction nozzle tube 2, so that children cannot swallow the cover body 101, and at the same time, the suction nozzle cover 1 is prevented from being discarded alone, which is convenient for recycling.

[0067] In this embodiment, the first breakpoint connection structure includes a plurality of first broken bridges 102c, and the plurality of first broken bridges 102c are evenly distributed along the length direction of the outer ring belt 102;

[0068] Before the cover is opened, a plurality of the first broken bridges 102c are formed by the inner wall of the outer ring belt 102 protruding toward the central axis direction of the cover body 101, and the width of the first broken bridge 102c gradually decreases toward the central axis direction to form the narrow end of the first broken bridge 102c, and the narrow end of the first broken bridge 102c is connected to the outer peripheral wall of the cover body 101, and the first broken bridge 102c is approximately a triangular or trapezoidal structure.

[0069] In this embodiment, the second breakpoint connection structure includes a plurality of second broken bridges 101a, and the second broken bridges 101a also have a triangular or trapezoidal structure;

[0070] Before the cover is opened, a plurality of the second broken bridges 101a are formed by protruding downward from the bottom surface of the cover body 101, and the width of the second broken bridges 101a gradually decreases toward the binding ring 103 to form the narrow end of the second broken bridge 101a, and the narrow end of the second broken bridge 101a is connected to the top of the binding ring 103.

[0071] Specifically, the outer side surface of the cover body 101 is provided with convex strips 101c along the vertical direction to increase friction and have an anti-slip effect; the inner side surface of the cover body 101 and the suction nozzle tube 2 are provided with matching screw threads.

[0072] The bottom surface of the cover body 101 protrudes downward to form at least two (specifically two in this embodiment) lifting blocks 101b, and the bottom end of the lifting block 101b is lower than the bottom end of the second broken bridge 101a.

[0073] The top of the binding ring 103 is provided with a plurality of (two) air-avoiding gaps 103a adapted to the lifting step 101b, and the air-avoiding gaps 103a are formed by being sunken downward or penetrating from the top of the binding ring 103;

[0074] When the cover is not opened, the cover body 101 and the binding ring 103 are connected through the second breakpoint connection structure, and the lifting step 101b sinks into the air-avoiding gap 103a;

[0075] When the cover body 101 is grasped and rotated to open, the first side wall of the lifting step 101b rotates circumferentially and collides with the second side wall of the air avoidance gap 103a, and is then lifted up and separated from the air avoidance gap 103a, thereby assisting the first breakpoint connection structure and the second breakpoint connection structure to break.

[0076] In this embodiment, the lifting step block 101b and the second broken bridge 101a are located in the same circumferential direction and are distributed circumferentially, and both sides of each lifting step block 101b in the circumferential direction are the second broken bridge 101a;

[0077] When the cover 101 is grasped and rotated to open, the first side wall is inclined downward from the bottom surface of the cover 101 and in the direction of tightening the cover 101, and the second side wall is inclined upward from the bottom surface of the air-avoiding gap 103a and in the direction of twisting the cover 101. The first side wall and the second side wall are both inclined surfaces and can slide relative to each other.

[0078] The side wall on the lifting step 101b opposite to the first side wall is set as a third side wall, and the side wall in the avoidance gap 103a opposite to the second side wall is set as a fourth side wall, and the third side wall and the fourth side wall are both vertical surfaces.

[0079] In this embodiment, the binding ring 103 has an annular top, the outer diameter of the annular top is greater than the width of the outer circumferential wall of the cover body 101 , and the inner diameter of the annular top is smaller than the width of the outer circumferential wall of the cover body 101 .

[0080] The position of the annular top close to the central axis is set as the inner ring portion 103c, and the position away from the central axis is set as the outer ring portion 103b.

[0081] The outer ring band 102 is located above the outer ring portion 103b, the second end 102b of the outer ring band 102 is connected to the top surface of the outer ring portion 103b, the outer side of the second end 102b is flush with the outer side of the outer ring portion 103b, and the outer side of the outer ring band 102 before opening the cover does not exceed the outer side of the outer ring portion 103b;

[0082] The second breakpoint connection structure and the lifting step 101b are located on the top surface of the inner ring portion 103c, and the inner sides of the second breakpoint connection structure and the lifting step 101b are flush with the inner sides of the inner ring portion 103c, and the inner ring portion 103c penetrates downward to form a plurality of the air-avoiding gaps 103a.

[0083] In this embodiment, the bottom of the outer ring portion 103 b protrudes downward and extends to form a cylindrical structure 103 d , and the cylindrical structure 103 d serves as the main body of the binding ring 103 .

[0084] The bottom of the inner ring portion 103c is suspended, and a limiting protrusion is provided below the inner ring portion 103c. The outer wall of the nozzle tube 2 is provided with an outwardly protruding ring groove along the circumferential direction, and the notch of the ring groove faces the periphery. The limiting protrusion is pressed and then rotated to engage in the ring groove, and the groove width of the ring groove is greater than the maximum height of the limiting protrusion in the vertical direction.

[0085] Reference Fig.10 In this embodiment, the ring groove is formed by an upper ring rib 201 and a lower ring rib 202 distributed along the axial direction of the nozzle tube 2, and the outer width of the lower ring rib 202 is greater than the outer width of the upper ring rib 201;

[0086] The outer width of the upper ring rib 201 is greater than the inner diameter of the inner ring portion 103c, and the upper ring rib 201 prevents the inner ring portion 103c from entering the groove of the ring clamping groove. The outer width of the lower ring rib 202 is greater than the outer width of the bottom end of the binding ring 103.

[0087] In this embodiment, the binding ring 103 is pressed to cause elastic deformation so that the limiting protrusion is snapped into the ring clamping groove. The limiting protrusion is composed of a plurality of protrusions 103e, and the protrusions 103e are distributed along the circumference of the inner wall of the cylindrical structure 103d.

[0088] The bottom surface of the protrusion 103e is an inclined surface, and the bottom surface of the protrusion 103e extends and inclines upward and toward the central axis direction from the inner side wall of the cylindrical structure 103d.

[0089] The outer circumference of the ring groove is cut at two opposite positions to form flat surfaces 203 .

[0090] Example 2

[0091] like Figures 8 to 10 As shown, the difference between this embodiment and embodiment 1 is that the outer ring belt 102 is arranged around the outer peripheral wall of the cover body 101 and is close to half a circle, and the remaining structure is the same as that of embodiment 1 and is not described in detail.

[0092] According to the disclosure and teaching of the above specification, the technicians in the field of the utility model can also change and modify the above implementation mode. Therefore, the utility model is not limited to the specific implementation modes disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. An outer ring belt type suction nozzle assembly that is easy to recycle, comprising a suction nozzle tube and a suction nozzle cover, characterized in that: The nozzle cover comprises a cover body, a binding ring and a bendable outer ring belt; The cover body is screwed and installed on the nozzle tube, the binding ring is arranged below the cover body and is kept rotatingly connected to the nozzle tube, and the binding ring and the cover body are kept connected by the outer ring belt; The outer ring band is arranged around the outer peripheral wall of the cover body, the first end of the outer ring band is located on the outer peripheral wall of the cover body, the second end of the outer ring band is connected to the binding ring, and the direction in which the first end extends to the second end is the same as the direction in which the cover body is rotated to open the cover; The outer ring belt is located outside the outer peripheral wall of the cover body, and a first breakpoint connection structure is provided between the inner side wall of the outer ring belt and the outer peripheral wall of the cover body in the horizontal direction for connection, and a second breakpoint connection structure is provided between the bottom surface of the cover body and the binding ring in the vertical direction for connection; When the cover body is grasped and rotated to open, the first breakpoint connection structure and the second breakpoint connection structure are broken by force, the cover body is unscrewed and separated from the suction nozzle tube, the binding ring still remains rotatably connected to the suction nozzle tube, and the cover body remains connected to the binding ring through the outer ring belt, and further remains connected to the suction nozzle tube.

2. The outer ring belt type nozzle assembly for easy recycling according to claim 1, characterized in that: The first breakpoint connection structure includes a plurality of first broken bridges; Before the cover is opened, a plurality of the first broken bridges are formed by the inner side wall of the outer ring band protruding toward the central axis direction of the cover body, and the width of the first broken bridges gradually decreases toward the central axis direction to form the narrow ends of the first broken bridges, and the narrow ends of the first broken bridges are connected to the outer peripheral wall of the cover body.

3. The outer ring belt type nozzle assembly for easy recycling according to claim 1 or 2, characterized in that: The second breakpoint connection structure includes a plurality of second broken bridges; Before the cover is opened, a plurality of the second broken bridges are formed by protruding downward from the bottom surface of the cover body, and the width of the second broken bridges gradually decreases toward the binding ring to form the narrow end of the second broken bridge, and the narrow end of the second broken bridge is connected to the top of the binding ring.

4. The outer ring belt type nozzle assembly for easy recycling according to claim 3, characterized in that: The bottom surface of the cover body protrudes downward to form at least two lifting blocks, and the bottom end of the lifting block is lower than the bottom end of the second broken bridge; The top of the binding ring is provided with a plurality of gaps adapted to the lifting step blocks, and the gaps are formed by being sunken downward or penetrating from the top of the binding ring; When the cover is not opened, the cover body and the binding ring are kept connected through the second breakpoint connection structure, and the lifting step is sunken into the air-avoiding gap; When the cover body is grasped and rotated to open, the first side wall of the lifting step rotates circumferentially and collides with the second side wall of the air avoidance gap and is then lifted up and separated from the air avoidance gap, thereby assisting the first breakpoint connection structure and the second breakpoint connection structure to break.

5. The outer ring belt type nozzle assembly for easy recycling according to claim 4, characterized in that: The lifting step blocks and the second broken bridges are located in the same circumferential direction and are distributed circumferentially, and both sides of each lifting step block in the circumferential direction are second broken bridges; When the cover is grasped and rotated to open, the first side wall is inclined downward from the bottom surface of the cover and in the direction of tightening the cover, and the second side wall is inclined upward from the bottom surface of the gap and in the direction of twisting the cover, and the first side wall and the second side wall are both inclined surfaces and can slide relative to each other; The side wall on the lifting step opposite to the first side wall is set as a third side wall, and the side wall in the avoidance gap opposite to the second side wall is set as a fourth side wall, and the third side wall and the fourth side wall are both vertical surfaces.

6. The outer ring belt type nozzle assembly for easy recycling according to claim 4, characterized in that: The binding ring has an annular top, the outer diameter of the annular top is greater than the width of the outer peripheral wall of the cover body, and the inner diameter of the annular top is less than the width of the outer peripheral wall of the cover body; The position of the annular top close to the central axis is set as the inner ring part, and the position away from the central axis is set as the outer ring part; The outer ring band is located above the outer ring portion, the second end of the outer ring band is connected to the top surface of the outer ring portion, the outer side of the second end is flush with the outer side of the outer ring portion, and the outer side of the outer ring band before the cover is opened does not exceed the outer side of the outer ring portion; The second breakpoint connection structure and the lifting step block are located on the top surface of the inner ring portion, the inner sides of the second breakpoint connection structure and the lifting step block are flush with the inner sides of the inner ring portion, and the inner ring portion is recessed downward or penetrated to form a plurality of air avoidance gaps.

7. The outer ring belt type nozzle assembly for easy recycling according to claim 6, characterized in that: The bottom of the outer ring portion protrudes downward and extends to form a cylindrical structure, and the cylindrical structure serves as the main body of the binding ring; The bottom of the inner ring portion is suspended, a limiting protrusion is provided below the inner ring portion, an outer wall of the nozzle tube is circumferentially provided with an outwardly protruding ring clamping groove, the notch of the ring clamping groove faces the outer periphery, the limiting protrusion is pressed and then rotated to engage in the ring clamping groove, and the groove width of the ring clamping groove is greater than the maximum height of the limiting protrusion in the vertical direction.

8. The outer ring belt type nozzle assembly for easy recycling according to claim 7, characterized in that: The ring groove is formed by an upper ring rib and a lower ring rib distributed along the axial direction of the nozzle tube, and the outer width of the lower ring rib is greater than the outer width of the upper ring rib; The outer width of the upper ring rib is greater than the inner diameter of the inner ring portion, and the upper ring rib prevents the inner ring portion from entering the groove of the ring clamping groove. The outer width of the lower ring rib is greater than the outer width of the bottom end of the binding ring.

9. The outer ring belt type nozzle assembly for easy recycling according to claim 8, characterized in that: The outer circumference of the ring clamping groove is cut at two opposite positions to form a plane, and the limiting protrusion is composed of a plurality of bumps, which are distributed along the circumference of the inner wall of the cylindrical structure. The binding ring is pressed to cause elastic deformation so that the bumps are inserted into the ring clamping groove.

10. The outer ring belt type suction nozzle assembly for easy recycling according to claim 9, characterized in that: The bottom surface of the protrusion is an inclined surface, and the bottom surface of the protrusion extends and inclines upward and toward the central axis direction from the inner side wall of the cylindrical structure.

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