Liquid filling machine
By using gear pumps and negative pressure recovery systems in the liquid filling machine, the problem that the filling machine cannot recover residual raw materials in the filling nozzle is solved, and efficient recycling and utilization of raw materials is achieved, reducing losses and pollution.
Patent Information
- Application Number
- CN202420556029.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-21
AI Technical Summary
The existing fully automatic filling machines cannot effectively recover the residual raw materials in the filling nozzle, resulting in large loss of raw materials.
A liquid filling machine is designed, which uses a gear pump to fill, and the filling nozzle is connected to the negative pressure bucket. After filling, the negative pressure bucket recovers the residual raw materials in the filling nozzle through vacuum action and returns them to the material box to reduce raw material loss.
It realizes efficient recycling of residual raw materials in the infusion nozzle, improves the utilization rate of raw materials, and reduces raw material losses and equipment pollution.
Smart Images
Figure CN222572669U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of filling equipment, in particular to a liquid filling machine. Background Art
[0002] Fully automatic filling machines are a type of equipment used to fill liquid products. They are mainly composed of a frame, filling components, liquid product conveying mechanisms, and control systems. They have the advantages of high filling accuracy, high filling efficiency, and easy use. They are widely used in the filling of injections, pesticides, medicines, detergents, shower gels, perfumes, edible oils, lubricants, and liquids in special industries.
[0003] At present, most of the fully automatic filling machines, when in use, transport the filling container to the designated position through the conveyor belt, and fill the liquid product by controlling the filling nozzle to move down into the filling container, so as to ensure that there is no liquid splashing during filling. When the filling is completed, the filling nozzle is lifted up, and then the filling container is transported by the conveyor belt. When the filling nozzle is lifted up after the filling is completed, a part of the liquid product will be attached to it. This part of the liquid product will drip onto the conveying mechanism of the filling container during the transportation of the filling container, which will cause pollution to the production workshop and equipment, increase the cost of cleaning, and also lead to increased loss of raw materials.
[0004] Existing fully automatic filling machines generally set a leak basin under the filling spout. During filling, the leak basin is moved out to the outside of the filling spout. After the filling spout is raised after filling, the leak basin is extended to the bottom of the filling spout to prevent the residual raw materials on the filling spout from dripping. Although this setting can prevent pollution and reduce cleaning costs, it still cannot solve the problem of large raw material loss due to raw materials remaining on the filling spout.
[0005] The technical problem to be solved by the present application is: how to solve the problem that the existing filling machine cannot recycle the raw materials remaining on the filling nozzle, resulting in a large loss of raw materials. Utility Model Content
[0006] In order to overcome the deficiencies of the prior art, the utility model aims to provide a liquid filling machine, which has the advantages of high filling accuracy and the ability to recycle raw materials in the filling nozzle to improve the utilization rate of the raw materials.
[0007] The technical solution adopted by the utility model is: a liquid filling machine, comprising a frame, a feeding mechanism and a filling mechanism respectively mounted on the frame, the feeding mechanism comprising a material box for storing raw materials, and the filling mechanism comprising a filling component for transferring the raw materials in the material box into a container;
[0008] The filling assembly includes a gear pump, a filling nozzle and a lifting power piece. The feed port of the gear pump is connected to the material box, the discharge port of the gear pump is connected to the inlet of the filling nozzle, and the lifting power piece drives the filling nozzle to rise and fall.
[0009] It also includes a recovery mechanism, which includes a negative pressure barrel and a control valve. The feed port of the negative pressure barrel is connected to the suction port of the filling nozzle. The control valve connects the discharge port of the negative pressure barrel and the material box to control the connection and disconnection between the discharge port of the negative pressure barrel and the material box.
[0010] The liquid filling machine of the present application utilizes a gear pump for filling and feeding, and has the characteristics of high feeding accuracy, which can improve the filling accuracy and avoid the waste of raw materials caused by insufficient feeding accuracy. In addition, since the filling nozzle of the liquid filling is generally made of stainless steel, the stainless steel filling nozzle is not easy to hang liquid due to its high surface smoothness, so most of the leakage at the filling nozzle comes from the inside of the filling nozzle. The liquid filling machine of the present application connects the suction port of the filling nozzle with the negative pressure barrel. When the filling of the filling nozzle is completed, the negative pressure is used to absorb the residual raw materials inside the filling nozzle into the negative pressure barrel. When the raw materials in the negative pressure barrel are collected enough, the control valve connects the negative pressure barrel with the material box, so that the raw materials in the negative pressure barrel flow back into the material box, and the raw materials in the filling nozzle are recovered, which reduces the loss of raw materials and avoids the residual raw materials in the filling nozzle from dripping onto the equipment or the workshop floor to cause pollution.
[0011] In some embodiments, the recycling mechanism also includes a return material tee, a first end of the return material tee is connected to the discharge port of the negative pressure barrel, and a second end of the return material tee is connected to the material box, the control valve includes a valve core and a return material drive component, the valve core is built into the return material tee, and the output shaft of the return material drive component extends from the third end of the return material tee into the return material tee and is connected to the valve core to drive the valve core to slide in the return material tee.
[0012] By adopting the above technical solution, the control valve controls the valve core, thereby controlling the connection and disconnection between the negative pressure barrel and the material box. On the one hand, it is convenient to control the movement of the valve core and realize automatic control. On the other hand, it can avoid direct connection between the negative pressure barrel and the material box, which will cause vacuum loss and affect the effect of raw material re-absorption.
[0013] In some embodiments, the recovery mechanism further includes a vacuum generator, which is connected to the negative pressure barrel.
[0014] By adopting the above technical solution, the vacuum generator can provide the required vacuum degree for the negative pressure barrel.
[0015] In some embodiments, the filling mechanism further includes a filling bracket, which includes a supporting frame connected to the frame, a lifting seat slidably connected to the supporting frame, and a lifting drive connecting the supporting frame and the lifting seat, and the filling assembly is installed on the lifting seat.
[0016] By adopting the above technical solution, the height of the lifting seat can be adjusted as needed, thereby adjusting the position of the filling assembly installed on the lifting seat, which is conducive to being suitable for filling containers of different heights and broadening the versatility of the filling machine.
[0017] In some embodiments, the perfusion assembly also includes a fixed plate connected to the lifting seat, the fixed plate is connected to the lifting seat through a sliding rod, the lifting power part is installed on the fixed plate, a mounting plate is arranged between the fixed plate and the lifting seat, the mounting plate is slidably connected to the sliding rod, the output end of the lifting power part is connected to the mounting plate, and the filling nozzle is installed on the mounting plate.
[0018] In some embodiments, the filling mechanism also includes a bottle fork assembly installed on a lifting seat, the bottle fork assembly includes a bottle clamping plate and a bottle fork clamping block that are relatively arranged, the bottle clamping plate and the bottle fork clamping block are arranged directly below the filling nozzle, and the end of the bottle fork clamping block close to the bottle clamping plate is provided with a notch corresponding to the neck of the container, the bottle fork clamping block is connected to the lifting seat through a bottle fork power piece, and the bottle fork power piece drives the bottle fork clamping block to approach or move away from the bottle clamping plate.
[0019] By adopting the above technical solution, during filling, the bottle fork clamp block and the bottle clamp fixing plate can cooperate to clamp the neck of the container to fix the position of the container so that the filling nozzle can be accurately inserted into the container for filling; after the filling is completed, the bottle fork clamp block is separated from the bottle clamp fixing plate to release the constraint of the bottle fork assembly on the container.
[0020] In some embodiments, the filling mechanism further includes a leak-collecting assembly mounted on the lifting seat, the leak-collecting assembly including a leak-collecting box disposed directly below the filling nozzle, and a leak-collecting power member driving the leak-collecting box to move closer to or away from the filling nozzle.
[0021] By adopting the above technical solution, the leak box can receive the raw materials attached to the outer surface of the filling nozzle, so as to avoid the raw materials dripping from the outer surface of the filling nozzle to cause equipment pollution and increase cleaning costs.
[0022] In some embodiments, it also includes a bottle feeding mechanism installed on the frame, the bottle feeding mechanism includes a conveyor belt arranged directly below the filling nozzle, a bottle blocking power member installed on the conveyor belt, and a bottle blocking rod connected to the output end of the bottle blocking power member, the bottle blocking rod is arranged on a side of the filling nozzle close to the output end of the conveyor belt, and the bottle blocking power member drives the bottle blocking rod to extend into the conveyor belt or be pulled out from the conveyor belt.
[0023] By adopting the above technical solution, the conveyor belt is used to convey the containers required for filling, and the bottle blocking power member cooperates with the bottle blocking rod to intercept or release the containers on the conveyor belt, so as to facilitate the filling operation of the containers.
[0024] In some embodiments, the feeding mechanism also includes a feeding assembly, which includes a feeding sensor installed on the material box, a feeding pipe connected to the material box, and a feeding power piece connected to the feeding pipe. The feeding sensor is used to sense the liquid level in the material box. A feeding tee is provided on the feeding pipe. The first end of the feeding tee is connected to the material box, the second end is connected to an external raw material storage device, and the third end is connected to the feeding power piece. A first check valve is built into the first end of the feeding tee, a second check valve is built into the second end of the feeding tee, and a piston is built into the third end of the feeding tee. The output end of the feeding power piece is connected to the piston to drive the piston to slide back and forth in the feeding pipe, and the feeding sensor is signal-connected to the feeding power piece.
[0025] By adopting the above technical scheme, when the raw material in the material box is lower than the preset liquid level, the feeding signal is triggered, and the feeding power part drives the piston to slide back and forth in the feeding tube, so that the external raw material flows through the first end of the feeding tee and then flows into the material box through the second end; when the raw material in the material box reaches the preset liquid level, the feeding stop signal is triggered and the feeding power part stops working; the first check valve and the second check valve arranged in the feeding tee can prevent the raw material from flowing back during the feeding process, thereby improving the feeding efficiency.
[0026] In some embodiments, a heating element is disposed on the outer surface of the tank.
[0027] By adopting the above technical solution, the heating element can heat the raw materials in the material box to reduce the viscosity of the raw materials for easy filling. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a structural schematic diagram of a liquid filling machine of a preferred embodiment of the utility model;
[0029] Figure 2 for Figure 1 Another perspective structural diagram of the liquid filling machine shown, wherein the protective cover is not shown;
[0030] Figure 3 for Figure 2 Another perspective structural diagram of the liquid filling machine shown, wherein the protective cover is not shown;
[0031] Figure 4 for Figure 2 The structural schematic diagram of the feeding mechanism in the liquid filling machine shown;
[0032] Figure 5 for Figure 2 The structural schematic diagram of the bottle feeding mechanism in the liquid filling machine shown;
[0033] Figure 6 for Figure 2The structural schematic diagram of the filling mechanism in the liquid filling machine shown;
[0034] Figure 7 for Figure 6 Another perspective structural diagram of the filling mechanism in the liquid filling machine shown, wherein the gear pump is not shown;
[0035] Figure 8 for Figure 2 The schematic diagram of the structure of the recovery mechanism in the liquid filling machine is shown.
[0036] In the figure: 100, liquid filling machine; 10, frame; 20, feeding mechanism; 21, material box; 22, heating element; 23, feeding assembly; 231, feeding sensor; 232, feeding pipe; 233, feeding power element; 234, feeding tee; 235, first check valve; 236, second check valve; 237, piston; 30, bottle feeding mechanism; 31, conveyor belt; 32, bottle blocking power element; 33, bottle blocking rod; 40, filling mechanism; 41, filling bracket; 411, support frame; 412, lifting seat; 413, lifting Lowering drive component; 42. Infusion assembly; 421. Gear pump; 422. Infusion nozzle; 423. Lifting power component; 424. Fixing plate; 425. Sliding rod; 426. Mounting plate; 43. Bottle fork assembly; 431. Bottle clamp fixing plate; 432. Bottle fork clamp block; 433. Bottle fork power component; 44. Leakage connection assembly; 441. Leakage connection box; 442. Leakage connection power component; 50. Recovery mechanism; 51. Negative pressure barrel; 52. Control valve; 521. Valve core; 522. Return drive component; 53. Return tee; 54. Vacuum generator. DETAILED DESCRIPTION
[0037] 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 in 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.
[0038] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When the number of an element is referred to as "plurality", it may be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0040] See also Figures 1 to 8 , which is a liquid filling machine 100 of a preferred embodiment of the utility model, includes a frame 10, a feeding mechanism 20, a bottle feeding mechanism 30, a filling mechanism 40 and a recovery mechanism 50 respectively installed on the frame 10. The liquid filling machine 100 of the present application has the advantages of high filling accuracy and the ability to recover the raw materials in the filling nozzle 422 to improve the utilization rate of the raw materials and reduce the possibility of raw material dripping.
[0041] like Figures 2 to 4 As shown, the feeding mechanism 20 includes a material box 21 for storing raw materials and a material replenishing component 23 for replenishing raw materials into the material box 21. In this embodiment, the material box 21 is a box body with an arc-shaped bottom, so that the raw materials in the material box 21 can be discharged as much as possible to improve the utilization rate of the raw materials.
[0042] Preferably, a heating element 22 is provided on the outer surface of the material box 21. Since the viscosity of the raw material is related to the temperature, the higher the temperature, the lower the viscosity, and the lower the viscosity, the more conducive to filling. Therefore, by providing a heating element 22 on the outer surface of the material box 21, it is beneficial to heat the raw materials in the material box 21 to increase the temperature of the raw materials. Optionally, the heating element 22 is a silicone rubber heating plate, which is relatively soft in texture and can be set to a desired shape according to needs, and can be better wrapped on the surface of the material box 21 to improve the heat transfer efficiency; further, the silicone rubber heating plate is connected to the material box 21 through a spring, so that the silicone rubber heating plate can be better fitted to the surface of the material box 21.
[0043] like Figure 4As shown, the feeding assembly 23 includes a feeding sensor 231 installed on the material box 21, a feeding pipe 232 connected to the material box 21, and a feeding power piece 233 connected to the feeding pipe 232. The feeding sensor 231 is used to sense the liquid level in the material box 21. The feeding pipe 232 is provided with a feeding tee 234. The first end of the feeding tee 234 is connected to the material box 21, the second end is connected to the external raw material storage device, and the third end is connected to the feeding power piece 233. The first end of the feeding tee 234 is built with a first check valve 235, the second end of the feeding tee 234 is built with a second check valve 236, and the third end of the feeding tee 234 is built with a piston 237. The output end of the feeding power piece 233 is connected to the piston 237 to drive the piston 237 to slide back and forth in the feeding pipe 232. The feeding sensor 231 is connected to the feeding power piece 233 by signal. Optionally, the feeding power piece 233 is a cylinder.
[0044] In this embodiment, the feeding sensor 231 includes a float built into the material box 21 and a trigger rod connected to the float. A first sensor corresponding to the lowest liquid level and a second sensor corresponding to the highest liquid level are respectively arranged on one side of the trigger rod. The first sensor and the second sensor can be contact sensors or photoelectric sensors.
[0045] See also Figure 2 and Figure 5 The bottle feeding mechanism 30 includes a conveyor belt 31 arranged directly below the filling nozzle 422, a bottle blocking power member 32 installed on the conveyor belt 31, and a bottle blocking rod 33 connected to the output end of the bottle blocking power member 32. The bottle blocking rod 33 is arranged on the side of the filling nozzle 422 close to the output end of the conveyor belt 31, and the bottle blocking power member 32 drives the bottle blocking rod 33 to extend into the conveyor belt 31 or to be pulled out from the conveyor belt 31. Preferably, since the filling containers have different sizes, in order to facilitate the adjustment of the position of the bottle blocking rod 33 according to the size of the filling container, the bottle blocking power member 32 is slidably connected to the frame of the conveyor belt 31. In this embodiment, the bottle blocking power member 32 is a cylinder. Preferably, an optical fiber sensor is also arranged on the conveyor belt 31 to sense whether the filling container passes by. The optical fiber sensor is arranged on the side of the bottle blocking rod 33 close to the feeding end of the conveyor belt 31, and the optical fiber sensor is connected to the bottle blocking power member 32 for signal.
[0046] See also Figure 2 and 6 The filling mechanism 40 includes a filling bracket 41 and a filling assembly mounted on the filling bracket 41. The filling bracket 41 includes a support frame 411 connected to the frame 10, a lifting seat 412 slidably connected to the support frame 411, and a lifting drive member 413 connecting the support frame 411 and the lifting seat 412. In this embodiment, the lifting drive member 413 is a lead screw, and a hand wheel is connected to one end of the lead screw. The lifting seat 412 can be raised and lowered by rotating the hand wheel.
[0047] like Figure 6 As shown, the filling assembly 42 is used to transfer the raw materials in the material box 21 into the container. The filling assembly 42 includes a gear pump 421, a filling nozzle 422 and a lifting power member 423. The feed port of the gear pump 421 is connected to the material box 21, the discharge port of the gear pump 421 is connected to the inlet of the filling nozzle 422, and the lifting power member 423 drives the filling nozzle 422 to rise and fall. In this embodiment, the gear pump 421 is driven by a servo motor. The servo motor drives the gear pump 421 to operate to achieve accurate feeding. The lifting power member 423 is a cylinder. Furthermore, the perfusion assembly 42 also includes a fixed plate 424 connected to the lifting seat 412, the fixed plate 424 is connected to the lifting seat 412 through a sliding rod 425, the lifting power member 423 is installed on the fixed plate 424, a mounting plate 426 is arranged between the fixed plate 424 and the lifting seat 412, the mounting plate 426 is slidably connected to the sliding rod 425, the output end of the lifting power member 423 is connected to the mounting plate 426, and the filling nozzle 422 is installed on the mounting plate 426.
[0048] Preferably, the filling mechanism 40 also includes a bottle fork assembly 43 installed on the lifting seat 412, the bottle fork assembly 43 includes a bottle clamping fixing plate 431 and a bottle fork clamp block 432 which are relatively arranged, the bottle clamping fixing plate 431 and the bottle fork clamp block 432 are arranged directly below the filling nozzle 422, and the bottle fork clamp block 432 is provided with a notch corresponding to the container neck at one end close to the bottle clamping fixing plate 431, the bottle fork clamp block 432 is connected to the lifting seat 412 through a bottle fork power member 433, and the bottle fork power member 433 drives the bottle fork clamp block 432 to approach or move away from the bottle clamping fixing plate 431.
[0049] Furthermore, in order to improve the filling efficiency, in this embodiment, the number of the filling nozzles 422 is two, one of which is fixedly mounted on the mounting plate 426, and the other is slidably mounted on the mounting plate 426. A slide groove corresponding to the filling nozzle 422 is provided on the mounting plate 426, so that the position of the other filling nozzle 422 can be adjusted according to the size of the filling container to improve versatility. Correspondingly, the number of the fork bottle clamp block 432 is also two, and a U-shaped groove corresponding to the fork bottle clamp block 432 is provided on the lifting seat 412, so as to adjust the position of the fork bottle clamp block 432 according to the position of the filling nozzle 422. Similarly, a long hole is provided on the bottle clamp fixing plate 431, so as to adjust the position of the bottle clamp fixing plate 431 to match the position of the fork bottle clamp block 432. It should be noted that the number of the filling nozzles 422 and the fork bottle clamp block 432 corresponds to each other, and the number of the filling nozzles 422 and the fork bottle clamp block 432 can be set according to actual needs, and the number of the two is not specifically limited.
[0050] Preferably, the filling mechanism 40 further comprises a leakage collecting assembly 44 mounted on the lifting seat 412, and the leakage collecting assembly 44 comprises a leakage collecting box 441 arranged directly below the filling nozzle 422, and a leakage collecting power member 442 driving the leakage collecting box 441 to approach or move away from the filling nozzle 422. When filling some liquids with high viscosity, such liquids are easily left inside the filling nozzle 422 and are easily attached to the outer surface of the filling nozzle 422. By providing the leakage collecting box 441, the liquid attached to the outer surface of the filling nozzle 422 can be received, and the liquid attached to the outer surface of the filling nozzle 422 can be prevented from dripping and causing pollution.
[0051] Optionally, the leakage connection power component 442 and the bottle fork power component 433 are both cylinders.
[0052] Please also read Figure 2 , Figure 3 and Figure 8 The recovery mechanism 50 includes a negative pressure barrel 51 and a control valve 52. The feed port of the negative pressure barrel 51 is connected to the suction port of the filling nozzle 422. The control valve 52 connects the discharge port of the negative pressure barrel 51 and the material box 21, and is used to control the connection and disconnection between the discharge port of the negative pressure barrel 51 and the material box 21.
[0053] Specifically, the recycling mechanism 50 further includes a return material tee 53, the first end of which is connected to the discharge port of the negative pressure barrel 51, the second end of which is connected to the material box 21, the control valve 52 includes a valve core 521 and a return material driving member 522, the valve core 521 is built in the return material tee 53, the output shaft of the return material driving member 522 extends from the third end of the return material tee 53 into the return material tee 53 and is connected to the valve core 521, so as to drive the valve core 521 to slide in the return material tee 53. Optionally, the recycling mechanism 50 further includes a vacuum generator 54, which is connected to the negative pressure barrel 51. In this embodiment, the vacuum generator 54 is installed on the top of the negative pressure barrel 51.
[0054] The liquid filling machine 100 further includes a controller (not shown), which is disposed on one side of the protective cover on the top of the frame 10. The controller is used to control the coordinated operation of various mechanisms of the filling machine.
[0055] During filling, the conveyor belt 31 starts to run and starts to convey the filling container. When the optical fiber sensor on the conveyor belt 31 detects the arrival of the filling container, the bottle blocking power piece 32 drives the bottle blocking rod 33 to extend to intercept the filling container in the filling area. Then the bottle fork power piece 433 drives the bottle fork clamp block 432 to move toward the bottle clamp fixing plate 431, so that the bottle fork clamp block 432 cooperates with the bottle clamp fixing plate 431 to clamp the bottle mouth or neck position of the filling container. Then the lifting power piece 423 drives the filling nozzle 422 to descend, so that the lower end of the filling nozzle 422 is inserted into the filling container. Then the servo motor drives the gear pump 421 to rotate, and the raw materials in the material box 21 are passed through The raw materials are transported to the filling nozzle 422 through a pipeline and then enter the filling container. After the preset capacity is filled, the filling nozzle 422 is closed. At the same time, the vacuum generator 54 starts to work, and the residual raw materials in the filling nozzle 422 are sucked back into the negative pressure barrel 51 by negative pressure. Then the lifting power part 423 drives the filling nozzle 422 to reset. At the same time, the leakage receiving power part 442 drives the leakage receiving box 441 to extend to the bottom of the filling nozzle 422 and pause for a specified time before automatically resetting. Then the bottle clamping power part drives the bottle fork clamping block 432 to reset, and the bottle blocking power part 32 drives the bottle blocking rod 33 to reset. The filled container is taken away along the conveyor belt 31. The above actions are repeated for continuous filling.
[0056] After a certain period of filling, the raw material in the material box 21 will become less and less, and the liquid level will begin to drop. When the material replenishment sensor 231 senses that it has reached the lower limit of the liquid level detection, after identification, the material replenishment power part 233 starts to work and drives the piston 237 to move back and forth, sucking the material at the material end into the material replenishment pipe 232, and pushing these materials toward the material box 21, and continuously operates to push the materials into the material box 21 until the liquid level of the material box 21 reaches the upper limit of the liquid level detection, and then the material replenishment will stop. At the same time, after the filling nozzle 422 sucks back for a certain period of time, the raw material in the negative pressure barrel 51 will accumulate, and the return material driving part 522 needs to drive the valve core 521 to move, so that the negative pressure barrel 51 is connected with the material box 21, and the raw material in the negative pressure barrel 51 automatically flows into the material box 21, and then the return material driving part 522 drives the valve core 521 to move to separate the negative pressure barrel 51 from the material box 21, and repeat the above actions to perform continuous material replenishment.
[0057] The liquid filling machine 100 of the present application uses the gear pump 421 for filling and feeding, which has the characteristics of high feeding accuracy, can improve the filling accuracy, and can also avoid the waste of raw materials caused by insufficient feeding accuracy; in addition, since the liquid filling nozzle 422 is generally made of stainless steel, the stainless steel nozzle 422 is not easy to hang liquid due to its high surface smoothness, so most of the leakage at the nozzle 422 comes from the inside of the nozzle 422. The suction port 422 is connected with the negative pressure barrel 51. When the filling of the filling nozzle 422 is completed, the negative pressure is used to absorb the residual raw materials inside the filling nozzle 422 into the negative pressure barrel 51. When the raw materials in the negative pressure barrel 51 are collected enough, the control valve 52 connects the negative pressure barrel 51 with the material box 21, so that the raw materials in the negative pressure barrel 51 flow back into the material box 21, so that the raw materials in the filling nozzle 422 can be recovered, thereby reducing the loss of raw materials and preventing the residual raw materials in the filling nozzle 422 from dripping onto the equipment or the workshop floor to cause pollution.
[0058] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A liquid filling machine (100), comprising a frame (10), a feeding mechanism (20) and a filling mechanism (40) respectively mounted on the frame (10), wherein the feeding mechanism (20) comprises a material box (21) for storing raw materials, and the filling mechanism (40) comprises a filling component (42) for transferring the raw materials in the material box (21) into a container, characterized in that: The pouring assembly (42) comprises a gear pump (421), a pouring nozzle (422) and a lifting power member (423); the feed port of the gear pump (421) is connected to the material box (21); the discharge port of the gear pump (421) is connected to the inlet of the pouring nozzle (422); and the lifting power member (423) drives the pouring nozzle (422) to rise and fall; The invention also comprises a recovery mechanism (50), wherein the recovery mechanism (50) comprises a negative pressure barrel (51) and a control valve (52), wherein the feed port of the negative pressure barrel (51) is connected to the suction port of the filling nozzle (422), and the control valve (52) is connected to the discharge port of the negative pressure barrel (51) and the material box (21), and is used to control the connection and disconnection between the discharge port of the negative pressure barrel (51) and the material box (21).
2. The liquid filling machine (100) according to claim 1, characterized in that: The recycling mechanism (50) further comprises a return material tee (53), a first end of the return material tee (53) being in communication with a material outlet of the negative pressure barrel (51), a second end of the return material tee (53) being in communication with a material box (21), the control valve (52) comprising a valve core (521) and a return material driving member (522), the valve core (521) being built in the return material tee (53), an output shaft of the return material driving member (522) extending from a third end of the return material tee (53) into the return material tee (53) and connected to the valve core (521), so as to drive the valve core (521) to slide in the return material tee (53).
3. The liquid filling machine (100) according to claim 1, characterized in that: The recovery mechanism (50) further comprises a vacuum generator (54), wherein the vacuum generator (54) is in communication with the negative pressure barrel (51).
4. The liquid filling machine (100) according to claim 1, characterized in that: The filling mechanism (40) further comprises a filling support (41), wherein the filling support (41) comprises a support frame (411) connected to the frame (10), a lifting seat (412) slidably connected to the support frame (411), and a lifting drive member (413) connecting the support frame (411) and the lifting seat (412), and the filling assembly (42) is mounted on the lifting seat (412).
5. The liquid filling machine (100) according to claim 4, characterized in that: The pouring assembly (42) further comprises a fixing plate (424) connected to the lifting seat (412); the fixing plate (424) is connected to the lifting seat (412) via a sliding rod (425); the lifting power member (423) is mounted on the fixing plate (424); a mounting plate (426) is provided between the fixing plate (424) and the lifting seat (412); the mounting plate (426) is slidably connected to the sliding rod (425); an output end of the lifting power member (423) is connected to the mounting plate (426); and the pouring nozzle (422) is mounted on the mounting plate (426).
6. The liquid filling machine (100) according to claim 4, characterized in that: The filling mechanism (40) further comprises a bottle fork assembly (43) mounted on the lifting seat (412), the bottle fork assembly (43) comprising a bottle clamping fixing plate (431) and a bottle fork clamping block (432) arranged opposite to each other, the bottle clamping fixing plate (431) and the bottle fork clamping block (432) being arranged directly below the filling nozzle (422), a notch corresponding to the neck of the container being arranged at one end of the bottle fork clamping block (432) close to the bottle clamping fixing plate (431), the bottle fork clamping block (432) being connected to the lifting seat (412) via a bottle fork power member (433), and the bottle fork power member (433) driving the bottle fork clamping block (432) to approach or move away from the bottle clamping fixing plate (431).
7. The liquid filling machine (100) according to claim 4, characterized in that: The filling mechanism (40) further comprises a leak connection assembly (44) mounted on the lifting seat (412), wherein the leak connection assembly (44) comprises a leak connection box (441) arranged directly below the filling nozzle (422), and a leak connection power member (442) for driving the leak connection box (441) to move closer to or away from the filling nozzle (422).
8. The liquid filling machine (100) according to claim 1, characterized in that: The invention also comprises a bottle conveying mechanism (30) mounted on the frame (10), the bottle conveying mechanism (30) comprising a conveyor belt (31) arranged directly below the filling nozzle (422), a bottle-blocking power member (32) mounted on the conveyor belt (31), and a bottle-blocking rod (33) connected to the output end of the bottle-blocking power member (32), the bottle-blocking rod (33) being arranged on one side of the filling nozzle (422) close to the output end of the conveyor belt (31), and the bottle-blocking power member (32) driving the bottle-blocking rod (33) to extend into the conveyor belt (31) or to be drawn out from the conveyor belt (31).
9. The liquid filling machine (100) according to claim 1, characterized in that: The feeding mechanism (20) further comprises a feeding assembly (23), wherein the feeding assembly (23) comprises a feeding sensor (231) installed in the material box (21), a feeding pipe (232) connected to the material box (21), and a feeding power member (233) connected to the feeding pipe (232), wherein the feeding sensor (231) is used to sense the liquid level in the material box (21), and the feeding pipe (232) is provided with a feeding tee (234), wherein a first end of the feeding tee (234) is connected to the material box (21), and a second end of the feeding tee (234) is connected to an external raw material storage The device is connected to the third end thereof, and the third end thereof is connected to a feeding power piece (233). A first check valve (235) is built into the first end of the feeding tee (234), a second check valve (236) is built into the second end of the feeding tee (234), a piston (237) is built into the third end of the feeding tee (234), an output end of the feeding power piece (233) is connected to the piston (237) to drive the piston (237) to slide back and forth in the feeding pipe (232), and the feeding sensor (231) is connected to the feeding power piece (233) for signal connection.
10. The liquid filling machine (100) according to claim 1, characterized in that: The outer surface of the material box (21) is provided with a heating element (22).