Vacuum bottle material injection device and material injection method

Abstract

The vacuum bottle injection device comprises a shell, a material supplementing tank, a lead screw, an injection unit and a connecting pipe, the shell comprises a second bottom cover and an outer cover, the lower portion of the outer cover is connected with the upper portion of the second bottom cover in a buckled mode, the material supplementing tank is connected with the bottom cover in a sliding mode, and the lead screw penetrates through the second bottom cover and is in threaded connection with the second bottom cover; the material injection unit is located in an area defined by the second bottom cover and the outer cover and movably connected with the upper portion of the lead screw, the connecting pipe penetrates through the second bottom cover, the two ends of the connecting pipe are fixedly connected with the material injection unit and the material supplementing tank respectively, and the material supplementing tank, the material injection unit and the connecting pipe can be driven to ascend and descend by rotating the lead screw. The first one-way valve is installed in the first piston, when material injection is needed, the material injection unit of the material injection device is connected with the first one-way valve, the first piston is pulled to move through the lead screw, materials in the material supplementing tank can be supplemented into the vacuum bottle through the material injection unit in the moving process of the first piston, and material supplementing operation is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to a holding container, more particularly, to a vacuum bottle filling device and a filling method. BACKGROUND

[0002] The cosmetic vacuum bottle is a bottle with a built-in piston, mainly used for holding cosmetics. The existing vacuum bottles are disposable and cannot be refilled after use. Some users may disassemble the vacuum bottle, press down the piston, and then refill the vacuum bottle. However, this method allows the material to come into contact with the air, which is not conducive to the storage of the material. Therefore, there is an urgent need to design a device that can refill the vacuum bottle. SUMMARY

[0003] The present application aims to overcome the shortcomings of the prior art and provide a vacuum bottle filling device and a filling method. A first one-way valve is installed in the first piston. When refilling is needed, the filling unit of the filling device is connected to the first one-way valve, and the first piston is moved by the lead screw. During the movement of the first piston, the material in the refill tank is supplemented into the vacuum bottle, realizing the refilling operation.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a vacuum bottle filling device, comprising a shell, a refill tank, a lead screw, a filling unit and a connecting pipe, the shell comprising a second bottom cover and an outer cover, the lower part of the outer cover being connected to the upper part of the second bottom cover, the refill tank being slidably connected to the bottom cover, the lead screw penetrating through the second bottom cover and being threadedly connected to the second bottom cover, the filling unit being located in the area enclosed by the second bottom cover and the outer cover, the filling unit being movably connected to the upper part of the lead screw, the connecting pipe penetrating through the second bottom cover, the connecting pipe being fixedly connected to the filling unit and the refill tank at both ends, and the lead screw being rotated to drive the refill tank, the filling unit and the connecting pipe to lift.

[0005] Further, the filling unit comprises a support plate and a clamping piece, the clamping piece comprises a support table, the lower part of the support table is movably connected to the upper part of the lead screw, the upper part of the support table is fixedly provided with two protrusions, the support plate comprises a limiting hole corresponding to the protrusions, the protrusions penetrate through the limiting hole and the inner wall of the penetrating end is provided with a second boss, and the distance between the upper ends of the two protrusions is greater than the distance between the lower ends.

[0006] Further, the support plate and the clamping piece are connected by a screw rod, the screw rod penetrates through the support plate from top to bottom and is inserted into the support table for fixation, a first spring is sleeved on the outer side of the screw rod, the upper end of the first spring abuts against the lower part of the support plate and the lower end abuts against the upper part of the support table.

[0007] Further, the screw rod comprises a ring cavity at the upper end, the clamping piece further comprises a third boss at the lower part of the support table, a limiting block is fixed at the lower part of the third boss, the third boss penetrates the opening at the upper part of the ring cavity, the limiting block is located in the ring cavity, and the screw rod and the clamping piece can rotate relative to each other.

[0008] Further, the support plate comprises a second ring-shaped rib at the upper part, the second ring-shaped rib is located at the side of the clamping piece, a second one-way valve is fixed in the second ring-shaped rib, a sleeve shell is threadedly connected to the upper part of the second ring-shaped rib, a valve core is slidably connected in the sleeve shell, and the valve core can move up and down to enable the connecting pipe and the sleeve shell to be in one-way communication or blocked.

[0009] Further, the valve core comprises a sealing plate, a valve rod and a third through hole, the sealing plate is in sealing cooperation with the inner wall of the sleeve shell, the valve rod exceeds the upper and lower ends of the sealing plate, the lower end of the valve rod can abut against the second one-way valve, the third through hole is located between the valve rod and the sealing plate, a second spring is sleeved on the outer side of the valve rod, the upper end of the second spring abuts against the lower part of the sealing plate, and the lower end of the second spring abuts against the upper part of the second one-way valve.

[0010] Further, the support plate further comprises a third ring-shaped rib and a second through hole, the end of the connecting pipe is inserted into the third ring-shaped rib and fixed, and the second through hole communicates the inside of the second ring-shaped rib and the connecting pipe.

[0011] Further, the shell is connected with the material supplementing tank through a connecting plate, the material supplementing tank comprises a stud at the lower part, one end of the connecting plate is sleeved on the outer side of the screw rod, and the other end of the connecting plate is fixed with the stud through a screw;

[0012] The screw rod comprises a limiting rib located below the second bottom cover, the upper part of the connecting plate can abut against or be separated from the lower part of the limiting rib, a handle is fixed at the lower part of the screw rod, a third spring is sleeved on the outer side of the screw rod, the upper end of the third spring abuts against the lower part of the connecting plate, and the lower end of the third spring abuts against the upper part of the handle, a support block is fixed at the upper part of the connecting plate, the connecting pipe penetrates the support block, and the upper part of the support block can abut against or be separated from the lower part of the second bottom cover.

[0013] A material supplementing method of a vacuum bottle, comprising a vacuum bottle, the vacuum bottle comprising a bottle body, a first piston and a first bottom cover, the first piston is located in the interior of the bottle body, the first piston is in sealing cooperation with the inner wall of the bottle body, a first one-way valve is fixed in the first piston, a plug cover is sealed and covered on the first one-way valve, the lower end of the bottle body is an opening, the first bottom cover covers the opening at the lower end of the bottle body, and the area in the interior of the bottle body above the first piston is a storage cavity.

[0014] The injection unit of the injection device is connected with the first one-way valve, and the first piston is moved by the lead screw, and the material in the supplement tank is supplemented into the vacuum bottle through the injection unit during the movement of the first piston, so that the supplement operation is realized.

[0015] Further, the steps include:

[0016] S1, opening the first bottom cover and the plug cover of the vacuum bottle;

[0017] S2, inserting the lead screw, injection unit and connecting pipe into the bottle body, and after completion, the second bottom cover is buckled with the lower part of the bottle body, the clamping part is clamped and fixed with the first piston, and the valve core opens the first one-way valve and the second one-way valve respectively;

[0018] S3, rotating the lead screw, pulling the first piston down through the clamping part, and the first piston, the injection unit and the connecting pipe are lowered synchronously during the descent of the first piston, and the negative pressure is generated in the storage cavity, the material in the supplement tank enters the storage cavity through the connecting pipe, the second one-way valve and the first one-way valve, and the closed injection is realized;

[0019] S4, the first piston is lowered to the lowest point, and the injection is completed;

[0020] S5, holding the supplement tank, rotating the lead screw in the opposite direction, the lead screw pushes the clamping part up, the clamping part is separated from the first piston, and at this time the vacuum bottle is lifted, and the vacuum bottle is separated from the injection device;

[0021] S6, re-fixing the first bottom cover and the plug cover.

[0022] In summary, the present application has the following beneficial effects:

[0023] Rotating the lead screw drives the support plate and the clamping part to descend, and because of the planar cooperation of the second boss and the notch, the clamping part can drive the first piston to descend when it descends, and during the descent of the injection unit, the negative pressure is generated in the discharge cavity of the bottle body, so that the second piston in the supplement tank moves downward, the material in the supplement tank enters the storage cavity through the connecting pipe, the second one-way valve and the first one-way valve, and the supplement operation of the vacuum bottle is realized, and during the supplement process, the material flow pipeline is a closed pipeline and does not contact with the outside air, so it does not affect the material. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a sectional view of the vacuum bottle;

[0025] Figure 2 is Figure 1 partial structure schematic view;

[0026] Figure 3 is a structure schematic view of the first piston;

[0027] Figure 4 is a structural schematic view of the injection device;

[0028] Figure 5 is a sectional view of the injection device;

[0029] Figure 6 is Figure 5 is an enlarged view at A;

[0030] Figure 7 is a structural schematic view of the injection unit;

[0031] Figure 8 is a sectional view of the injection device when injecting;

[0032] Figure 9 is Figure 8 is a partial schematic view of

[0033] Figure 10 is a partial schematic view of Figure 8

[0034] Reference signs: 1, bottle body; 11, bottle mouth; 12, protrusion; 13, storage cavity; 2, inner cover; 21, pump body; 22, pressing head; 3, first piston; 31, sealing sleeve; 32, skeleton; 321, first annular rib; 322, first through hole; 323, first boss; 324, notch; 325, limiting table; 33, first one-way valve; 34, plug cover; 4, first bottom cover; 41, air hole; 5, shell; 51, second bottom cover; 52, limiting plate; 53, outer cover; 6, replenishment tank; 61, second piston; 62, sliding rail; 63, stud; 7, screw rod; 71, annular cavity; 72, limiting rib; 73, handle; 8, injection unit; 81, support plate; 811, limiting hole; 812, second annular rib; 813, third annular rib; 814, second through hole; 82, clamping piece; 821, support table; 822, protruding rib; 823, second boss; 824, third boss; 825, limiting block; 83, screw rod; 84, first spring; 85, second one-way valve; 86, sleeve; 87, valve core; 871, sealing plate; 872, valve rod; 873, third through hole; 88, second spring; 9, connecting pipe; 100, connecting plate; 101, support block; 200, third spring. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] As​Figures 1 to 3 The embodiment shown discloses a vacuum bottle filling device for filling a vacuum bottle. The vacuum bottle comprises a bottle body 1, an inner cover 2, a pump body 21, a pressing head 22, a first piston 3 and a first bottom cover 4. The bottle body 1 comprises a bottle opening 11. The inner cover 2 is threadedly connected with the bottle opening 11. The pump body 21 is fixed inside the inner cover 2. The lower end of the pump body 21 is inserted into the bottle body 1, and the upper end is fixed with the pressing head 22. The first piston 3 is located inside the bottle body 1. The first piston 3 is in sealing cooperation with the inner wall of the bottle body 1. The first bottom cover 4 covers the lower end opening of the bottle body 1. The first bottom cover 4 comprises an air hole 41. The area inside the bottle body 1 above the first piston 3 is a storage cavity 13 for storing material. The pump body 21 is a prior art, and its specific structure is not described in this specification. By pressing the pressing head 22, the material can be discharged. The material will drive the first piston 3 to rise during the discharging process. When the first piston 3 rises to the highest position, the storage cavity 13 needs to be refilled.

[0037] The first piston 3 is fixed with a first one-way valve 33. The first one-way valve 33 is sealed and covered with a plug cover 34. The lower end of the bottle body 1 is an opening. The air hole 41 is unidirectionally communicated with the storage cavity 13 through the first one-way valve 33 or blocked by the plug cover 34. Specifically, the plug cover 34 is a rubber sleeve. The first piston 3 comprises a sealing sleeve 31 and a framework 32. The sealing sleeve 31 is rubber. The framework 32 is plastic. The sealing sleeve 31 is sleeved outside the framework 32 and integrally formed with the framework 32. The framework 32 comprises a first annular rib 321 and a first through hole 322. The first one-way valve 33 is fixed in the first annular rib 321. The first through hole 322 is located at the upper part of the first one-way valve 33 and is communicated with the storage cavity 13. The plug cover 34 is sleeved outside the first annular rib 321 and blocks the lower part of the first annular rib 321.

[0038] As Figure 2As shown, the communication direction of the first one-way valve 33 is from bottom to top one-way communication, the first one-way valve 33 is a prior art, which has a certain communication resistance, in normal use, the plug 34 blocks the lower end of the first one-way valve 33, thereby avoiding the outside air from entering the storage cavity 13 through the first one-way valve 33, and ensuring normal discharge, when the material needs to be replenished, the injection unit 8 of the replenishment device can be sleeved outside the outer wall of the first annular rib 321, and the first one-way valve 33 is opened, at this time the material in the replenishment device can enter the storage cavity 13 from the first one-way valve 33 to replenish the material, during the replenishment, the replenishment device is connected with the first annular rib 321, so that the outside air cannot enter the storage cavity 13 during the replenishment process, and after the replenishment is completed, the first one-way valve 33 is affected by the spring inside and rebounds to block the storage cavity 13 from the outside, avoiding air entering, at this time the plug 34 is closed to the first one-way valve 33, so it can be seen that through the above design, the closed replenishment of the bottle body 1 can be realized, thereby realizing the repeated use of the vacuum bottle.

[0039] Further, the first bottom cover 4 is threadedly connected with the bottle body 1, and the first bottom cover 4 is convenient to disassemble and assemble through the threaded connection.

[0040] Among them, the bottle body 1 comprises a plurality of protrusions 12, the protrusions 12 are located above the threaded segment connecting the bottle cap and the first bottom cover 4 and protrude from the threaded segment, and the protrusions 12 are used for connecting the replenishment device.

[0041] As shown in the drawings, Figure 3 As shown, the skeleton 32 further comprises a first boss 323, the first boss 323 is located at the axis of the skeleton 32, the two sides of the first boss 323 are provided with notches 324, the lower surface of the notch 324 is a plane and the upper surface is an inclined surface, the two sides of the first boss 323 are connected with limit tables 325, the clamping piece 82 of the replenishment device can clamp the notch 324 and pull down the first piston 3 to replenish the material, and the limit table 325 is used for limiting the clamping piece 82 of the replenishment device.

[0042] Specifically, as shown in the drawings, Figures 4 to 10 A vacuum bottle injection device, comprising a shell 5, a replenishment tank 6, a lead screw 7, an injection unit 8 and a connecting pipe 9, the shell 5 comprises a second bottom cover 51 and an outer cover 53, the lower part and the upper part of the outer cover 53 are buckled and connected, the injection unit 8 is located in the area surrounded by the second bottom cover 51 and the outer cover 53, by providing the outer cover 53, the injection unit 8 can be protected, avoiding the injection unit 8 from being opened by mistake, the replenishment tank 6 is slidably connected with the second bottom cover 51, the second bottom cover 51 is fixed with an arc-shaped limiting plate 52, the arc-shaped limiting plate 52 comprises a dovetail groove, the replenishment tank 6 comprises a sliding rail 62 corresponding to the dovetail groove, the sliding rail 62 is inserted into the dovetail groove and can slide along it;

[0043] The screw rod 7 penetrates the second bottom cover 51 and is screwed with the second bottom cover 51, the injection unit 8 is movably connected on the upper part of the screw rod 7, the connecting pipe 9 penetrates the second bottom cover 51, and the connecting pipe 9 is fixedly connected with the injection unit 8 and the replenishment tank 6 at two ends respectively, and rotating the screw rod 7 can drive the replenishment tank 6, the injection unit 8 and the connecting pipe 9 to ascend and descend.

[0044] As shown in Figure 7 and Figure 10 The injection unit 8 comprises a supporting plate 81 and a clamping piece 82, the supporting plate 81 is connected with the clamping piece 82 through a screw rod 83, specifically, the clamping piece 82 comprises a supporting table 821, two protruding ribs 822 are fixed on the upper part of the supporting table 821, the supporting plate 81 comprises limiting holes 811 corresponding to the protruding ribs 822, the protruding ribs 822 penetrate the limiting holes 811 and the inner wall of the penetrating end is provided with second bosses 823, the distance between the upper ends of the two protruding ribs 822 is greater than the distance between the lower ends, that is, the two protruding ribs 822 are outwardly inclined, the screw rod 83 penetrates the supporting plate 81 from top to bottom and is inserted into the supporting table 821 and fixed, the first spring 84 is sleeved on the outer side of the screw rod 83, the upper end of the first spring 84 abuts against the lower part of the supporting plate 81 and the lower end abuts against the upper part of the supporting table 821, so it can be seen that when the supporting plate 81 is in place, the screw rod 7 can continue to drive the clamping piece 82 to move and compress the first spring 84.

[0045] The lower part of the supporting table 821 is movably connected with the upper part of the screw rod 7, specifically, the screw rod 7 comprises an annular cavity 71 at the upper end, the clamping piece 82 further comprises a third boss 824 at the lower part of the supporting table 821, the lower part of the third boss 824 is fixed with a limiting block 825, the third boss 824 penetrates the opening of the upper part of the annular cavity 71, and the limiting block 825 is located in the annular cavity 71, the screw rod 7 and the clamping piece 82 can rotate relative to each other, and the clamping piece 82 can be rotationally limited through the cooperation of the protruding ribs 822 and the limiting holes 811, so when the supporting plate 81 is in place, rotating the screw rod 7 can only drive the supporting plate 81 and the clamping piece 82 to ascend and descend, and cannot drive the clamping piece 82 to rotate.

[0046] As shown in Figures 8 to 10As shown, the support plate 81 includes a second annular rib 812 on the upper portion, which is located on the side of the clamping piece 82, and a second one-way valve 85 is fixed in the second annular rib 812. A sleeve 86 is threadedly connected to the upper portion of the second annular rib 812. When the support plate 81 is in place, the upper portion of the support plate 81 abuts the lower portion of the first piston 3, and the clamping piece 82 clamps the first piston 3. Specifically, the second boss 823 of the clamping piece 82 is inserted into the gap 324 for limiting, and the lower portion of the second boss 823 cooperates with the bottom plane of the gap 324. At the same time, the sleeve 86 is sealingly sleeved outside the first annular rib 321. The first one-way valve 33 and the second one-way valve 85 are both open, and the second bottom cover 51 can be completely sleeved outside the bottle body 1 and buckled and fixed with the protrusion 12 of the bottle body 1.

[0047] As shown in Figure 3 and Figure 7 The limiting table 325 is located on both sides of the gap 324, thereby blocking both sides of the gap 324 to prevent the clamping piece 82 from coming out from both sides of the gap 324. The size of the limiting table 325 is greater than the distance between the two protruding ribs 822 located at one end of the second boss 823. Therefore, if the injection device is installed off-center, the upper portion of the clamping piece 82 will abut against the end of the limiting table 325, and the second bottom cover 51 will not be buckled with the bottle body 1. At this time, the vacuum flask can be rotated until the clamping piece 82 is opposite to the gap 324. Then the injection device can continue to move, so that the second bottom cover 51 is buckled with the bottle body 1, and the clamping piece 82 is buckled with the gap 324.

[0048] After the injection unit 8 is in place, one hand holds the vacuum flask, and the other hand rotates the lead screw 7 to drive the support plate 81 and the clamping piece 82 to descend. Since the second boss 823 cooperates with the plane of the gap 324, the clamping piece 82 can drive the first piston 3 to descend when it descends. During the descending process of the injection unit 8, negative pressure is generated in the discharge cavity 13 of the bottle body 1, causing the second piston 61 in the replenishment tank 6 to move downward. The material in the replenishment tank 6 flows into the storage cavity 13 through the connecting pipe 9, the second one-way valve 85 and the first one-way valve 33 for storage, thereby achieving the replenishment of the vacuum flask. During the replenishment process, the material flow pipeline is airtight and does not contact with the outside air, so it does not affect the material.

[0049] The shell 5 and the replenishment tank 6 are connected by a connecting plate 100. The replenishment tank 6 includes a stud 63 located on the lower portion. One end of the connecting plate 100 is sleeved outside the lead screw 7, and the other end is fixed with the stud 63 by a screw.

[0050] As shown in Figure 5As shown, the lead screw 7 includes a limiting rib 72 located below the second bottom cover 51, the upper part of the connecting plate 100 can abut or be separated from the lower part of the limiting rib 72, the lower part of the lead screw 7 is fixed with a handle 73, the outer side of the lead screw 7 is sleeved with a third spring 200, the upper end of the third spring 200 abuts against the lower part of the connecting plate 100 and the lower end abuts against the upper part of the handle 73, the upper part of the connecting plate 100 is fixed with a supporting block 101, the connecting pipe 9 penetrates through the supporting block 101, and the upper part of the supporting block 101 can abut or be separated from the lower part of the second bottom cover 51. Therefore, when the lead screw 7 rotates downward, the limiting rib 72 and the connecting plate 100 can pull the material supplementing tank 6 and the connecting pipe 9 to descend synchronously, and when the material injection is completed, the material injection unit 8 is located at the lowest point, at this time, the lead screw 7 can be twisted in the opposite direction, and because the storage cavity 13 and the material supplementing tank 6 have a large resistance, the lead screw 7 only drives the clamping piece 82 to move upward during the twisting process, and the convex rib 822 of the clamping piece 82 expands outward during the upward movement, so that the second convex boss 823 is separated from the gap 324, at this time, the material injection device can be directly pulled out outward.

[0051] As shown in Figure 6 , Figure 7 and Figure 9 , the sleeve shell 86 is slidably connected with a valve core 87, the valve core 87 can move up and down to make the connecting pipe 9 and the sleeve shell 86 one-way communicate or block, specifically, the valve core 87 includes a sealing plate 871, a valve rod 872 and a third through hole 873, the sealing plate 871 is sealingly matched with the inner wall of the sleeve shell 86, the valve rod 872 extends beyond the upper and lower ends of the sealing plate 871, the lower end of the valve rod 872 can abut against the second one-way valve 85, the third through hole 873 is located between the valve rod 872 and the sealing plate 871, and the outer side of the valve rod 872 is sleeved with a second spring 88, the upper end of the second spring 88 abuts against the lower part of the sealing plate 871 and the lower end abuts against the upper part of the second one-way valve 85.

[0052] As shown in Figure 6 , when the material injection device is not used, the valve core 87 is not in contact with the second one-way valve 85 under the action of the second spring 88, and in this state, the material supplementing tank 6 is in a closed state, when the material needs to be supplemented, as shown in Figure 9 , during the sleeving of the sleeve shell 86 on the first annular rib 321, the first annular rib 321 pushes the valve core 87 to descend, so that the valve core 87 moves downward, at this time, the two ends of the valve core 87 can push open the first one-way valve 33 and the second one-way valve 85 respectively, so that the first one-way valve 33 and the second one-way valve 85 are communicated, that is, the material supplementing tank 6 is communicated with the storage cavity 13, for material supplementing.

[0053] As shown in Figure 6As shown, the support plate 81 further comprises a third annular rib 813 and a second through hole 814, the end of the connecting pipe 9 is inserted into the third annular rib 813 and fixed, and the second through hole 814 communicates the inside of the second annular rib 812 and the connecting pipe 9. The connecting pipe 9 is a stainless steel metal pipe and is fixed by screwing with the third annular rib 813. During the lifting of the injection unit 8, the connecting pipe 9 is a force receiving member, so it is designed as a metal member to avoid damage to the connecting pipe 9.

[0054] In the method, the injection unit 8 of the injection device is connected with the first one-way valve 33 and moves by pulling the first piston 3 through the lead screw 7. During the movement of the first piston 3, the material in the replenishment tank 6 is replenished into the vacuum bottle through the injection unit 8 to realize the replenishment operation.

[0055] Specifically, the method comprises the following steps:

[0056] S1, opening the first bottom cover 4 and the plug cover 34 of the vacuum bottle;

[0057] S2, inserting the lead screw 7, the injection unit 8 and the connecting pipe 9 into the bottle body 1, and then buckling the second bottom cover 51 with the lower part of the bottle body 1, clamping and fixing the first piston 3 by the clamping member 82, and opening the first one-way valve 33 and the second one-way valve 85 by the valve core 87 respectively;

[0058] S3, rotating the lead screw 7 to pull down the first piston 3 by the clamping member 82. During the descending process of the first piston 3, the replenishment tank 6, the injection unit 8 and the connecting pipe 9 descend synchronously, and a negative pressure is generated in the storage cavity 13. The material in the replenishment tank 6 enters the storage cavity 13 through the connecting pipe 9, the second one-way valve 85 and the first one-way valve 33 to realize the closed injection.

[0059] S4, the first piston 3 descends to the lowest point to complete the injection;

[0060] S5, holding the replenishment tank 6 and reversely rotating the lead screw 7. The lead screw 7 pushes the clamping member 82 to ascend, and the clamping member 82 is separated from the first piston 3. At this time, the vacuum bottle is lifted and separated from the injection device.

[0061] S6, re-fixing the first bottom cover 4 and the plug cover 34.

[0062] By using the above steps, the replenishment operation of the vacuum bottle can be realized to realize the repeated use of the vacuum bottle.

[0063] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principles of the present application shall also be considered as the protection scope of the present application.

Claims

1. A vacuum bottle filling apparatus, characterised in that, The utility model provides a material injection device, which comprises a shell (5), a material supplementing tank (6), a screw rod (7), a material injection unit (8) and a connecting pipe (9), the shell (5) comprises a second bottom cover (51) and an outer cover (53), the lower part of the outer cover (53) is connected with the upper part of the second bottom cover (51) through buckling, the material supplementing tank (6) is slidably connected with the second bottom cover (51), the screw rod (7) penetrates the second bottom cover (51) and is threadedly connected with the second bottom cover (51), the material injection unit (8) is located in the area surrounded by the second bottom cover (51) and the outer cover (53), the material injection unit (8) is movably connected with the upper part of the screw rod (7), the connecting pipe (9) penetrates the second bottom cover (51), and the two ends of the connecting pipe (9) are fixedly connected with the material injection unit (8) and the material supplementing tank (6) respectively, and rotating the screw rod (7) can drive the material supplementing tank (6), the material injection unit (8) and the connecting pipe (9) to ascend and descend.

2. The vacuum bottle filling device of claim 1, wherein, The material injection unit (8) comprises a supporting plate (81) and a clamping piece (82), the clamping piece (82) comprises a supporting table (821), the lower part of the supporting table (821) is movably connected with the upper part of the screw rod (7), the upper part of the supporting table (821) is fixedly connected with two convex ribs (822), the supporting plate (81) comprises limiting holes (811) corresponding to the convex ribs (822), the convex ribs (822) penetrate the limiting holes (811) and are provided with second convex tables (823) on the end walls of the penetrating ends, and the distance between the upper ends of the two convex ribs (822) is greater than the distance between the lower ends.

3. A device for filling a vacuum flask according to claim 2, wherein, The supporting plate (81) and the clamping piece (82) are connected through a screw rod (83), the screw rod (83) penetrates the supporting plate (81) from top to bottom and is inserted into the supporting table (821) and fixed, a first spring (84) is arranged on the outer side of the screw rod (83), the upper end of the first spring (84) abuts against the lower part of the supporting plate (81), and the lower end of the first spring (84) abuts against the upper part of the supporting table (821).

4. The vacuum bottle filling apparatus of claim 2, wherein, The screw rod (7) comprises an annular cavity (71) located at the upper end, the clamping piece (82) further comprises a third convex table (824) located at the lower part of the supporting table (821), the lower part of the third convex table (824) is fixedly connected with a limiting block (825), the third convex table (824) penetrates an opening in the upper part of the annular cavity (71), and the limiting block (825) is located in the annular cavity (71), so that the screw rod (7) and the clamping piece (82) can rotate relative to each other.

5. The vacuum bottle filling apparatus of claim 2, wherein, The supporting plate (81) comprises a second annular rib (812) located at the upper part, the second annular rib (812) is located on the side of the clamping piece (82), a second one-way valve (85) is fixedly arranged in the second annular rib (812), a sleeve shell (86) is threadedly connected to the upper part of the second annular rib (812), a valve core (87) is slidably connected in the sleeve shell (86), and the valve core (87) can move up and down, so that the connecting pipe (9) and the sleeve shell (86) are in one-way communication or blocked.

6. A device for filling a vacuum flask according to claim 5, wherein, The valve core (87) comprises a sealing plate (871), a valve rod (872) and a third through hole (873), the sealing plate (871) is in sealing fit with the inner wall of the sleeve shell (86), the valve rod (872) extends beyond the upper and lower ends of the sealing plate (871), the lower end of the valve rod (872) can abut against the second one-way valve (85), the third through hole (873) is located between the valve rod (872) and the sealing plate (871), and the outer side of the valve rod (872) is sleeved with the second spring (88), the upper end of the second spring (88) abuts against the lower part of the sealing plate (871), and the lower end abuts against the upper part of the second one-way valve (85).

7. The vacuum bottle filling apparatus of claim 5, wherein, The support plate (81) further comprises a third annular rib (813) and a second through hole (814), the end of the connecting pipe (9) is inserted into the third annular rib (813) for fixation, and the second through hole (814) communicates the inside of the second annular rib (812) with the connecting pipe (9).

8. The vacuum bottle filling apparatus of claim 1, wherein, The shell (5) is connected with the material supplement tank (6) through the connecting plate (100), the material supplement tank (6) comprises a stud (63) located at the lower part, one end of the connecting plate (100) is sleeved outside the lead screw (7), and the other end is fixed with the stud (63) through a screw; The lead screw (7) comprises a limiting rib (72), the limiting rib (72) is located below the second bottom cover (51), the upper part of the connecting plate (100) can abut against or be separated from the lower part of the limiting rib (72), the lower part of the lead screw (7) is fixed with a handle (73), the outer side of the lead screw (7) is sleeved with a third spring (200), the upper end of the third spring (200) abuts against the lower part of the connecting plate (100), and the lower end abuts against the upper part of the handle (73), the upper part of the connecting plate (100) is fixed with a support block (101), the connecting pipe (9) penetrates through the support block (101), and the upper part of the support block (101) can abut against or be separated from the lower part of the second bottom cover (51).

9. A method of filling a vacuum bottle using a vacuum bottle filling device as claimed in any one of claims 1 to 8, characterised in that, The vacuum bottle comprises a bottle body (1), a first piston (3) and a first bottom cover (4), the first piston (3) is located inside the bottle body (1), the peripheral side of the first piston (3) is in sealing fit with the inner wall of the bottle body (1), a first one-way valve (33) is fixed inside the first piston (3), a plug cover (34) is sealed and covered on the first one-way valve (33), the lower end of the bottle body (1) is open, the first bottom cover (4) covers the lower end opening of the bottle body (1), and the area inside the bottle body (1) above the first piston (3) is a material storage cavity (13). The material injection unit (8) of the material injection device is connected with the first one-way valve (33) and moves the first piston (3) by pulling the lead screw (7), and the material in the material supplement tank (6) is supplemented into the vacuum bottle through the material injection unit (8) during the movement of the first piston (3), so that the material supplement operation is realized.

10. The method of claim 9, wherein the vacuum bottle is a cylindrical vacuum bottle. The method comprises the following steps: S1, opening the first bottom cover (4) and the plug cover (34) of the vacuum bottle; S2, insert the screw rod (7), the injection unit (8) and the connecting pipe (9) into the bottle body (1), after completion, the second bottom cover (51) is buckled with the lower part of the bottle body (1), the clamping part (82) is clamped and fixed with the first piston (3), and the valve core (87) respectively opens the first one-way valve (33) and the second one-way valve (85); S3, rotate the screw rod (7), pull down the first piston (3) through the clamping part (82), the first piston (3) descends in the process, the feeding tank (6), the injection unit (8) and the connecting pipe (9) descend synchronously, and the negative pressure is generated in the storage cavity (13), the material in the feeding tank (6) enters into the storage cavity (13) through the connecting pipe (9), the second one-way valve (85) and the first one-way valve (33), and closed injection is realized; S4, the first piston (3) descends to the lowest point, and the injection is completed; S5, hold the feeding tank (6), rotate the screw rod (7) reversely, the screw rod (7) pushes the clamping part (82) to ascend, the clamping part (82) is separated from the first piston (3), at this time, the vacuum bottle is lifted, and the vacuum bottle is separated from the injection device; S6, re-fix the first bottom cover (4) and the plug cover (34).

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