Elliptical buckle-based anti-static polymer vacuum bottle and preparation method thereof

Abstract

The application relates to a high polymer vacuum bottle based on elliptical buckle replacement and anti-static and a preparation method thereof, and aims to solve the technical problems that the inner bottle and the outer bottle of the existing similar products are less fixed by the combination of a large circle and a middle circle, and the carrying and locking modes are relatively single. The main points are that an inner thread of the large circle is provided with a buckle rib, an inner shoulder circle bottom of the large circle is provided with an upward and obliquely arranged bevel circle, an outer diameter above the buckle rib of the large circle is provided with a gear circle rib, the buckle rib of the large circle is buckled and fixed in an inner buckle groove of the middle circle, meanwhile, the large circle is sleeved and fixed in the middle circle through the gear circle rib, and the middle circle and the large circle are connected as a whole; the bottom of the middle circle is buckled and fixed at a top outer bottle mouth of the outer bottle, and a top inner bottle mouth of the outer bottle is abuttingly fixed at the bottom of the bevel circle of the large circle; a top locking piece of an outer cover top is hingedly arranged at one end and rotates, when the top locking piece rotates to one side of the outer cover, the top locking piece is fixed in a locking hole of a bottle locking piece through rivet knob interference locking.

Description

Technical Field

[0001] This invention relates to vacuum bottles, specifically an antistatic polymer vacuum bottle based on elliptical snap-fit ​​replacement and its preparation method. Background Technology

[0002] A vacuum bottle is a container that isolates gas from external temperature or external bacteria. Commercially available vacuum bottles consist of a cylindrical or elliptical container with a piston at the bottom. Its working principle involves using the contraction force of a spring to create a vacuum, preventing air from entering the bottle, and then using atmospheric pressure to push the piston at the bottom forward. Some existing bottles feature inner and outer bottle structures and replaceable packaging designs, such as Chinese patent application number 202110570378.5, published on August 31, 2021, entitled "Lightweight Antistatic Replaceable Vacuum Bottle and its Preparation Method"; and Chinese patent application number 201911021770.3, published on February 21, 2020, entitled "Antibacterial High-Rigidity Octagonal Double-Layer Vacuum Bottle and its Preparation Method". However, the production and assembly of the above-mentioned products and similar products are relatively inconvenient. The inner and outer bottles rarely adopt the fixing method of combining large and medium rings, which is particularly inconvenient to carry. The carrying and locking methods are relatively simple, and the material production and preparation methods need to be further improved. Summary of the Invention

[0003] To overcome the above shortcomings, the purpose of this invention is to provide a method for preparing an antistatic polymer vacuum bottle based on an elliptical snap-fit ​​replacement, thereby solving the technical problems of inconvenient production and assembly of existing similar products, the limited use of large and medium ring fastening methods for the inner and outer bottles, particularly the inconvenience of carrying, the limited carrying and locking methods, and the difficulty in manufacturing components using antistatic polymer materials. This objective is achieved through the following technical solution.

[0004] An antistatic polymer vacuum bottle based on an elliptical snap-fit ​​replacement is disclosed. The vacuum bottle includes an inner bottle and an outer bottle. The inner bottle is housed within the outer bottle. The bottom of the inner bottle has a bottom cap, and a large piston is located inside the inner bottle. A pump core assembly is located at the top of the inner bottle. The top of the outer bottle has a middle ring. A valve rod extending from the pump core assembly is connected to a cap. The outlet of the cap has a nozzle. The replacement device for the vacuum bottle consists of an independent set comprising another inner bottle, another bottom cap, another large piston, and a replacement cap. The external thread of the other inner bottle's opening is connected to the internal thread of the replacement cap. The key structural design features a pump core assembly with a snap-fit ​​mechanism. The large ring's internal thread is fixed to the external thread at the top of the inner bottle, with a gasket at the connection point. The large ring's internal thread has a snap-fit ​​rib on its outer diameter. The bottom of the large ring's inner shoulder ring has an upwardly sloping bevel. A toothed rib is located above the snap-fit ​​rib on the outer diameter of the large ring. The large ring's snap-fit ​​rib engages with the inner groove of the middle ring, while the large ring is simultaneously fitted and fixed inside the middle ring via the toothed rib, forming a single unit. The bottom of the middle ring snaps and is fixed to the top outer bottle opening. The top inner bottle opening of the outer bottle abuts against the bottom of the large ring's bevel. The cap at the bottom of the head cap fits into the hole at the top of the middle ring. The nozzle on the top side of the head cap extends above the hole at the top of the middle ring. The bevel of the large ring further seals the outer and inner bottles, and the outer diameter of the middle ring prevents contamination of the outer shoulder ring at the top of the outer bottle, further extending the service life of the inner ring.

[0005] The pump core assembly is fixed to the pump port at the top of the pump body by a snap-fit. A spring is provided on the outer diameter of the valve stem extending out of the snap-fit. The spring is located in the spring cavity formed by the upper spring sleeve of the snap-fit ​​and the lower spring sleeve of the valve stem. A small piston is provided on the outer diameter of the valve stem and valve needle engagement point inside the pump body. The piston port on the inner side of the top of the small piston fits into the sleeve groove at the bottom of the valve stem inside the pump body. The inner piston rib at the bottom of the small piston fits into the ring-shaped sealing groove at the top of the valve needle. A spring sleeve is provided at the liquid inlet hole inside the pump body below the valve needle.

[0006] The outer diameter of the outer shoulder ring above the bottom opening of the middle ring is provided with a raised cover buckle rib. The outer diameter of the raised upper cover of the middle ring above the cover buckle rib is smaller than the outer diameter of the upper cover at the cover buckle rib. The opening of the outer cover is fastened and fixed to the cover buckle rib of the middle ring.

[0007] The outer diameter of the middle ring is provided with an outer cover, and the outer diameter of the outer cover is provided with an outer cap. The outer cap and the outer cover are fitted together as one piece. The top of the outer cap and the outer diameter of the hinge seat are respectively provided with locking plate grooves. One end of the top locking plate is hinged and fixed to the hinge seat of the outer cap. The other end of the top locking plate has a hanging hole with a handle strap. Below the handle strap, one side of the outer cap is provided with a locking button. The locking hook of the locking button inside the outer cap is engaged and fixed in the locking groove on the side of the top locking plate inside the locking plate groove.

[0008] When the top locking piece is flipped to the locking piece groove on the outer cover, a bottle locking piece is correspondingly provided on the outer bottle side below the top locking piece. The handle strap is fixed to the hanging hole of the top locking piece by a rivet knob. The locking hole of the bottle locking piece is aligned with the rivet knob of the top locking piece. The inner diameter of the locking hole of the bottle locking piece has a notch aligned with the I-shaped rivet knob. When the rivet knob of the top locking piece is aligned with the notch at the locking hole of the bottle locking piece, it is inserted. Then the rivet knob is rotated to press the top locking piece into the locking hole of the bottle locking piece by interference locking.

[0009] The outer cover has a square outer diameter, and the inner groove of the outer cap fits into the outer cover as a whole. The outer bottle has an elliptical outer diameter. The outer cover can also be octagonal or other shapes that facilitate the fitting and fixing of the outer cap and the outer cover. The outer bottle can also be cylindrical, hexagonal, or other shapes. The inner bottle's shape just needs to be cylindrical.

[0010] The outer bottle is an antistatic polymer outer bottle, and the antistatic polymer material is formulated according to the following weight ratios: 100 parts PVC resin, 5-15 parts impact modifier, 3-6 parts antistatic agent, 2-5 parts heat stabilizer, and 1-3 parts processing modifier; the specific preparation steps are as follows: using a 500ml three-necked round-bottom flask, add 100-200ml of... PVC resin slurry is prepared by mechanically stirring to uniformly suspend PVC resin particles in the aqueous phase. 50-100 ml of the slurry is added and stirred until homogeneous. The temperature is raised to 60-90°C. A reducing agent, 1-5 parts of graphene oxide, and 1-5 parts of nano-titanium dioxide are added in a ratio of 1:1-10:1. The mixture is stirred and reacted for 1-3 hours. After the reaction is complete, the temperature is lowered to below 50°C, and the mixture is centrifuged or allowed to stand, then dried and sieved to obtain PVC resin. The impact modifier is chlorinated polyethylene; the processing modifier is a mixture of methacrylate copolymers and acrylate copolymers; and the reducing agent is one or more of sulfites, hypochlorites, and ferrous salts. The sulfite is one or more of free sulfite, bisulfite, metabisulfite, dithionite, trithionite, tetrathionite, and thiosulfate. The specific preparation steps are as follows: PVC resin, impact modifier, antistatic agent, heat stabilizer, and processing modifier are placed in a high-speed mixer according to the specified quantities. The mixture is mixed at a low speed of 200-500 r / min for 2-5 minutes, then at a high speed of 3000-5000 r / min for 4-6 minutes. After uniform mixing, the mixture is cooled for 2-5 minutes and then added to a twin-screw extruder. The temperature is controlled at 165-180℃ for melt blending and extrusion to obtain an antistatic polymer material.

[0011] The antistatic agent comprises the following components in the indicated weight proportions: 100 parts hexamethylene diisocyanate, 120 parts toluene diisocyanate, 40-55 parts polyether polyol, 20-30 parts fatty amine polyoxyethylene ether, 10-20 parts quaternary ammonium salt, 80-140 parts end-capping agent aqueous solution, 0.5-1.5 parts initiator, 0.2-0.8 parts co-solvent, and 200-450 parts solvent; the solvent is selected from one or more of dicumyl peroxide or tetrahydrofuran; the initiator is an azo initiator or an organic peroxide initiator; the co-solvent is isopropanol; the specific preparation steps are as follows: [The process is described in the original text, but the provided text is incomplete and requires further context.] Hexamethyl ethylene diisocyanate, toluene diisocyanate, and a small amount of catalyst were added to a flask. Dehydrated polyether polyol was added dropwise in batches, and the temperature was raised to 90-140℃. The reaction was maintained for 4-8 hours. Dicumyl peroxide was added to dissolve the polyether, isopropanol was added as a co-solvent, and an azo initiator was added. The mixture was stirred until homogeneous, and the temperature was controlled below 50℃. An aqueous solution of NaHSO3 as a capping agent was poured in, and the mixture was stirred rapidly for 10 minutes to form a high-viscosity water-in-oil emulsion. The mixture was then stirred for another 20 minutes until it became transparent and the viscosity decreased rapidly. After dilution with water, water-soluble polyurethane, fatty amine polyoxyethylene ether, and quaternary ammonium salt were added in a ratio of 1:2:1. The mixture was heated to 70℃ and refluxed for 36 hours to obtain an antistatic agent.

[0012] The present invention has a reasonable structural design, is convenient to use, produce and carry, has good sealing and stability, good material performance, and a feasible production method; it is suitable as a double-layer vacuum bottle with replacement function, and a structural improvement of similar products. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural diagram of the present invention, with part A defined in the diagram.

[0014] Figure 2 yes Figure 1 A cross-sectional view of the structure in its open state.

[0015] Figure 3 yes Figure 1 Enlarged view of part A.

[0016] Figure 4 This is a cross-sectional view of the replacement assembly of the present invention.

[0017] Figure 5 yes Figure 1 The diagram shows the external structure of the outer cap assembly and the bottle lock plate structure of the outer bottle, as well as the position structure of the top lock plate after rotation.

[0018] Figure 6 yes Figure 5 A top-view structural diagram, with dashed lines omitted.

[0019] Attached Figures and Their Names: 1. Outer Cover, 2. Nozzle, 3. Head Cap, 4. Valve Stem, 5. Spring, 6. Bayonet, 7. Large Ring, 701. Snap Rib, 702. Beveled Ring, 703. Gear Ring Rib, 8. Gasket, 9. Middle Ring, 901. Cover Snap Rib, 10. Small Piston, 11. Valve Needle, 12. Spring Sleeve, 13. Pump Body, 14. Inner Bottle, 15. Large Piston, 16. Bottom Cap, 17. Outer Bottle, 18. Replacement Cap, 19. Outer Cap, 20. Locking Button, 21. Handle Strap, 22. Top Locking Plate, 23. Rivet Knob, 24. Bottle Locking Plate. Detailed Implementation

[0020] The structure of the present invention will now be further described with reference to the accompanying drawings. For example... Figures 1-6 As shown, the vacuum bottle includes an inner bottle 14 and an outer bottle 17. The inner bottle is housed inside the outer bottle. The bottom of the inner bottle has a bottom cap 16. The inner bottle contains a large piston 15. The top of the inner bottle has a pump core assembly. The top of the outer bottle has a middle ring 9. A valve rod 4 extending from the pump core assembly is connected to a cap 3. The liquid outlet of the cap has a nozzle 2. The replacement set of the vacuum bottle includes an independent set consisting of another inner bottle, another bottom cap, another large piston, and a replacement cap 19. The external thread of the other inner bottle's opening can be connected to the internal thread of the replacement cap. The pump core assembly's bayonet 6 is fixed to the outer thread of the top bottle opening of the inner bottle via the internal thread of the large ring 7, and a gasket 8 is provided at the connection point; the outer diameter of the inner thread of the large ring is provided with a snap rib 701, the bottom opening of the inner shoulder ring of the large ring is provided with an upwardly inclined bevel ring 702, and the outer diameter above the snap rib of the large ring is provided with a toothed ring rib 703. The snap rib of the large ring is fastened and fixed to the inner groove of the middle ring, and the large ring is fitted and fixed inside the middle ring through the toothed ring rib, and the middle ring and the large ring are connected as one unit; the bottom opening of the middle ring is snapped and fixed to the top outer bottle opening of the outer bottle, and the top inner bottle opening of the outer bottle is abutted and fixed to the bottom of the bevel ring of the large ring; the cap opening at the bottom of the cap is fitted into the ring hole at the top of the middle ring, and the nozzle on the side of the cap above the middle ring is higher than the ring hole at the top of the middle ring. The pump core assembly is fixed to the pump port on the top of the pump body by a snap-fit. A spring 5 is provided on the outer diameter of the valve stem extending out of the snap-fit. The spring is set in the spring cavity formed by the upper spring sleeve of the snap-fit ​​and the lower spring sleeve of the valve stem. A small piston 10 is provided on the outer diameter of the valve stem and valve needle 11 in the pump body. The piston port on the inner side of the top of the small piston fits into the sleeve groove at the bottom of the valve stem in the pump body. The inner piston rib at the bottom of the small piston fits into the ring-shaped sealing groove at the top of the valve needle. A spring sleeve 12 is provided at the liquid inlet hole in the pump body below the valve needle.

[0021] The outer diameter of the outer shoulder ring above the bottom opening of the aforementioned middle ring has a raised cover rib 901. The outer diameter of the raised upper cover above the cover rib is smaller than the outer diameter of the upper cover at the cover rib. The opening of the outer cover is fastened and fixed to the cover rib of the middle ring. The outer diameter of the outer cover is square, and the inner groove of the outer cap fits into the outer cover as a whole. The outer diameter of the bottle is elliptical.

[0022] To use, open the outer cover and press the cap; the liquid inside the vacuum bottle will then flow out from the nozzle on the cap. After the liquid in the inner bottle is used up, open the outer bottle, remove the inner bottle, then open the replacement cap of the replacement kit, insert the inner bottle of the replacement kit, and reinstall the outer bottle; the vacuum bottle can then be reused.

[0023] like Figure 5 As shown, further, the outer diameter of the outer cover is provided with an outer cover 19, the outer cover and the outer cover are connected as one piece, the top of the outer cover and the outer diameter of the hinge seat are respectively provided with locking plate grooves, one end of the top locking plate 22 is hinged and fixed to the hinge seat of the outer cover, the other end of the top locking plate has a hanging hole with a handle strap 21, and a locking button 20 is provided on one side of the outer cover below the handle strap, the locking hook of the locking button inside the outer cover is engaged and fixed in the locking groove on one side of the top locking plate in the locking plate groove. When the top locking plate is flipped to the locking plate slot on the outer cap, a bottle locking plate 24 is provided on the outer bottle side below the top locking plate. The handle strap is fixed to the hanging hole of the top locking plate by the rivet knob 23. The locking hole of the bottle locking plate is aligned with the rivet knob of the top locking plate. The inner diameter of the locking hole of the bottle locking plate has a notch aligned with the I-shaped rivet knob. When the rivet knob of the top locking plate is aligned with the notch at the locking hole of the bottle locking plate, it is inserted. Then the rivet knob is rotated to press the top locking plate into the locking hole of the bottle locking plate by the interference fit of the rivet knob.

[0024] In use, the vacuum bottle is carried by the top locking plate of the outer cover and the handle strap. Press the locking button, and the top locking plate rotates to the other side of the outer cover. The rivet knob at the connection between the top locking plate and the handle strap aligns with the notch of the lock hole on the bottle lock plate and is inserted. Rotate the rivet knob, and the outer cover can be locked and fixed to the bottle lock plate of the outer bottle by the top locking plate.

[0025] The above-mentioned outer bottle is an antistatic polymer outer bottle. The antistatic polymer material is formulated according to the following weight ratios: Example 1: 100 parts PVC resin, 5 parts impact modifier, 3 parts antistatic agent, 2 parts heat stabilizer, and 1 part processing modifier; the specific preparation steps are as follows: 100 ml of PVC resin slurry is added to a 500 ml three-necked round-bottom flask at room temperature. The PVC resin particles are mechanically stirred to suspend uniformly in the aqueous phase. 50 ml of slurry is added and stirred evenly. The temperature is raised to 60°C. A reducing agent, 1 part graphene oxide, and 1 part nano titanium dioxide are added in a 1:1 ratio. The mixture is stirred and reacted for 1 hour. After the reaction is completed, the temperature is lowered to below 50°C, and the mixture is centrifuged or allowed to stand, dried, and sieved to obtain PVC resin.

[0026] Example 2: 100 parts PVC resin, 10 parts impact modifier, 5 parts antistatic agent, 4 parts heat stabilizer, and 2 parts processing modifier; the specific preparation steps are as follows: In a 500ml three-necked round-bottom flask, 150ml of PVC resin slurry was added at room temperature. Mechanical stirring was used to uniformly suspend the PVC resin particles in the aqueous phase. 80ml of slurry was added and stirred until homogeneous. The temperature was raised to 80℃. A reducing agent, 4 parts graphene oxide, and 3 parts nano-titanium dioxide were added in a 5:1 ratio. The mixture was stirred and reacted for 2 hours. After the reaction was completed, the temperature was lowered to below 50℃, and the mixture was centrifuged or allowed to stand, dried, and sieved to obtain the PVC resin.

[0027] Example 3: 100 parts PVC resin, 15 parts impact modifier, 6 parts antistatic agent, 5 parts heat stabilizer, and 3 parts processing modifier; the specific preparation steps are as follows: In a 500ml three-necked round-bottom flask, 200ml of PVC resin slurry was added at room temperature. Mechanical stirring was used to uniformly suspend the PVC resin particles in the aqueous phase. 100ml of slurry was added and stirred evenly. The temperature was raised to 90℃. A reducing agent, 5 parts graphene oxide, and 5 parts nano-titanium dioxide were added in a 10:1 ratio. The mixture was stirred and reacted for 3 hours. After the reaction was completed, the temperature was lowered to below 50℃, and the mixture was centrifuged or allowed to stand, dried, and sieved to obtain the PVC resin.

[0028] The impact modifier mentioned above is chlorinated polyethylene; the processing modifier is a mixture of methacrylate copolymers and acrylate copolymers; the reducing agent is one or a combination of two or more of sulfites, hypochlorites, and ferrous salts; the sulfite is one or more of free sulfites, bisulfites, metabisulfites, dithionites, trithionites, tetrathionites, and thiosulfates; the specific preparation steps are as follows: PVC resin, impact modifier, antistatic agent, heat stabilizer, and processing modifier are put into a high-speed mixer according to the quantity, mixed at a low speed of 200-500 r / min for 2-5 min, and then mixed at a high speed of 3000-5000 r / min for 4-6 min. After mixing evenly, the mixture is cooled for 2-5 min and then added to a twin-screw extruder. The temperature is controlled at 165-180℃ for melt blending and extrusion to obtain an antistatic polymer material.

[0029] The antistatic agent described above is formulated with the following components in the indicated weight ratios: Example 1: 100 parts hexamethylene diisocyanate, 120 parts toluene diisocyanate, 40 parts polyether polyol, 20 parts fatty amine polyoxyethylene ether, 10 parts quaternary ammonium salt, 80 parts end-capping agent aqueous solution, 0.5 parts initiator, 0.2 parts co-solvent, and 200 parts solvent; Example 2: 100 parts hexamethylene diisocyanate, 120 parts toluene diisocyanate, 50 parts polyether polyol, 25 parts fatty amine polyoxyethylene ether, 15 parts quaternary ammonium salt, and 11 parts end-capping agent aqueous solution. Example 1: 0 parts of initiator, 0.8 parts of co-solvent, and 350 parts of solvent; Example 2: 100 parts of hexamethylene diisocyanate, 120 parts of toluene diisocyanate, 55 parts of polyether polyol, 30 parts of fatty amine polyoxyethylene ether, 20 parts of quaternary ammonium salt, 140 parts of end-capping agent aqueous solution, 1.5 parts of initiator, 0.8 parts of co-solvent, and 450 parts of solvent; the solvent is selected from one or more of dicumyl peroxide or tetrahydrofuran; the initiator is an azo initiator or an organic peroxide initiator; the co-solvent is isopropanol.

[0030] The specific preparation steps are as follows: Hexamethyl ethylene diisocyanate, toluene diisocyanate and a small amount of catalyst are added to a flask equipped with a stirrer, thermometer and nitrogen gas pipe. After adding dehydrated polyether polyol in batches, the temperature is raised to 90-140℃ and the reaction is maintained for 4-8 hours. Dicumyl peroxide dissolver, isopropanol cosolvent and azo initiator are added and stirred evenly. The temperature is controlled below 50℃. NaHSO3 end-capping agent aqueous solution is poured in and stirred rapidly for 10 minutes to form a high viscosity water-in-oil emulsion. After stirring for another 20 minutes, it becomes transparent and the viscosity decreases rapidly. After dilution with water, water-soluble polyurethane and fatty amine polyoxyethylene ether and quaternary ammonium salt are added in a ratio of 1:2:1. The mixture is heated to 70℃ and refluxed for 36 hours to obtain the antistatic agent.

Claims

1. A kind of high polymer vacuum bottle based on elliptical buckle position replacement anti-static, the vacuum bottle includes inner bottle (14) and outer bottle (17), outer bottle is provided with inner bottle, the bottom bottle mouth of inner bottle is equipped with bottom cover (16), inner bottle is equipped with big piston (15), the top bottle mouth of inner bottle is equipped with pump core group erection, the top bottle mouth of outer bottle is equipped with middle ring (9), the valve stem (4) of pump core assembly that extends is connected with head cap (3), the liquid outlet hole of head cap is equipped with nozzle (2);The replacement of the vacuum bottle includes another inner bottle, another bottom cover, another big piston and replacement cover (18) independent set, the outer thread of the bottle mouth of another inner bottle is connected with the inner thread of replacement cover and can be;Its characterized in that The pump core assembly's bayonet (6) is fixedly arranged at the top bottle opening of the inner bottle (14) by the internal thread of the large ring (7), and the connection is provided with a gasket (8); the internal thread outer diameter of the large ring is provided with a buckle rib (701), the bottom ring opening of the internal shoulder ring of the large ring is provided with an upwardly and obliquely arranged bevel ring (702), the outer diameter above the buckle rib of the large ring is provided with a gear ring rib (703), the buckle rib of the large ring is fixedly buckled to the internal buckle groove of the middle ring, and at the same time, the large ring is fixedly sleeved in the middle ring, and the middle ring and the large ring are integrally connected; the bottom ring opening of the middle ring is buckled and fixed to the top outer bottle opening of the outer bottle, the top inner bottle opening of the outer bottle is abuttingly fixed to the bottom of the bevel ring of the large ring, the cap opening of the head cap is sleeved into the ring hole of the top of the middle ring, and the nozzle (2) on one side of the head cap above the middle ring protrudes from the ring hole of the top of the middle ring; the outer diameter of the middle ring (9) is provided with an outer cover (1), the outer diameter of the outer cover is provided with an outer cover (19), the outer cover and the outer cover are integrally connected, the top of the outer cover and the outer diameter of the hinge seat on one side are respectively provided with a lock piece groove, one end of the top lock piece (22) is hingedly fixed to the hinge seat of the outer cover, the other end of the top lock piece is provided with a handle strap (21), one side of the outer cover below the handle strap is provided with a lock knob (20), and the lock hook of the lock knob in the outer cover is buckled and fixed to the lock groove on one side of the top lock piece in the lock piece groove; when the top lock piece (22) is turned to the lock piece groove on one side of the outer cover (19), the outer bottle (17) on one side below the top lock piece is correspondingly provided with a bottle lock piece (24), the handle strap (21) is fixed to the hanging hole of the top lock piece by a rivet knob (23), the lock hole of the bottle lock piece is aligned with the rivet knob of the top lock piece, and the inner diameter of the lock hole of the bottle lock piece is provided with a notch aligned with the rivet knob; when the rivet knob of the top lock piece is aligned with the notch of the lock hole of the bottle lock piece, the rivet knob is inserted, and then the rivet knob is rotated, and the top lock piece is fixedly locked to the lock hole of the bottle lock piece by the rivet knob; the outer diameter of the outer cover (1) is square, the inner groove hole of the outer cover (19) is integrally connected with the outer cover, and the bottle body of the outer bottle (17) has an oval outer diameter.

2. The elliptical buckle-based replacement anti-static polymer vacuum bottle according to claim 1, wherein The bayonet (6) of the pump core assembly is fixedly buckled to the pump opening at the top of the pump body (13), the valve rod (4) of the protruding bayonet is provided with a spring (5), the spring is arranged in the spring cavity formed by the upper spring sleeve of the bayonet and the lower spring sleeve of the valve rod, the outer diameter of the buckling part of the valve rod and the valve needle (11) in the pump body is provided with a small piston (10), the piston opening on the top inner side of the small piston is sleeved into the sleeve opening groove at the bottom of the valve rod in the pump body, the inner side piston rib at the bottom of the small piston is sleeved into the sealing groove of the ring-shaped top of the valve needle, and the poppet (12) is arranged at the liquid inlet hole below the valve needle in the pump body.

3. The elliptical buckle-based replacement anti-static polymer vacuum bottle according to claim 1, wherein The outer diameter of the step of the outer shoulder ring above the bottom ring opening of the middle ring (9) is provided with a protruding cover buckle rib (901), the outer diameter of the protruding upper cover sleeve of the middle ring above the cover buckle rib is smaller than the outer diameter of the upper cover sleeve at the cover buckle rib, and the cover opening of the outer cover (1) is fixedly buckled to the cover buckle rib of the middle ring.

4. The preparation method of the anti-static high polymer vacuum bottle based on elliptical buckle replacement according to claim 1, characterized in that The outer bottle is an anti-static high polymer outer bottle, and the anti-static high polymer material is prepared by mixing the following components in the following weight proportions: 100 parts of PVC resin, 5-15 parts of impact modifier, 3-6 parts of anti-static agent, 2-5 parts of heat stabilizer, and 1-3 parts of processing modifier. The preparation steps are as follows: using a 500ml three-necked round bottom flask, adding 100-200ml PVC resin slurry at room temperature, mechanically stirring to make the PVC resin particles uniformly suspended in the aqueous phase, adding 50-100ml slurry, stirring uniformly, heating to 60-90℃, adding reducing agent in a ratio of 1:1-10:1, and adding 1-5 parts of graphene oxide and 1-5 parts of nano titanium dioxide, stirring for 1-3h, after the reaction is completed, cooling to below 50℃, centrifuging or standing, drying and sieving to obtain the PVC resin; the above impact modifier is chlorinated polyethylene; the processing modifier is a mixture of methacrylate copolymer and acrylate copolymer; the reducing agent is one or a combination of two or more of sulfite, hypochlorite and ferrous salt; the sulfite is one or more of free sulfite, bisulfite, pyrosulfite, dithionite, trithionate, tetrathionate and thiosulfate; the preparation steps are as follows: placing the PVC resin, impact modifier, antistatic agent, thermal stabilizer and processing modifier into a high-speed mixer according to the quantity, mixing at a low speed of 200-500r / min for 2-5min, then mixing at a high speed of 3000-5000r / min for 4-6min, mixing uniformly, cooling for 2-5min, and then adding into a twin-screw extruder, controlling the temperature at 165-180℃ for melt blending and extrusion to obtain the antistatic high polymer material.

5. The preparation method of the anti-static high polymer vacuum bottle based on elliptical buckle replacement according to claim 4, characterized in that The antistatic agent is prepared by proportioning the components in the following weight fractions: hexamethylene diisocyanate 100 parts, toluene diisocyanate 120 parts, polyether polyol 40-55 parts, fatty amine polyoxyethylene ether 20-30 parts, quaternary ammonium salt 10-20 parts, water solution of capping agent 80-140 parts, initiator 0.5-1.5 parts, cosolvent 0.2-0.8 parts and solvent 200-450 parts; the solvent is selected from one or more of dicumyl peroxide or tetrahydrofuran; the initiator is an azo initiator or an organic peroxide initiator; the cosolvent is isopropyl alcohol; The preparation steps are as follows: adding hexamethylene diisocyanate, toluene diisocyanate and a small amount of catalyst into a flask equipped with a stirrer, thermometer and nitrogen inlet tube, adding the dehydrated polyether polyol in batches dropwise, heating to 90-140℃, maintaining the reaction for 4-8h, adding dicumyl peroxide, isopropyl alcohol cosolvent and azo initiator, stirring uniformly, controlling the temperature to be less than 50℃, pouring the water solution of capping agent NaHSO3, stirring rapidly for 10min to form a high-viscosity water-in-oil emulsion, continuing to stir for 20min to make it transparent, rapidly reducing the viscosity, diluting with water, adding water-soluble polyurethane and fatty amine polyoxyethylene ether, quaternary ammonium salt in a ratio of 1:2:1, heating to 70℃ for reflux for 36h to obtain the antistatic agent.

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