CN221093690U - Multistation filling equipment - Google Patents

Abstract

The utility model relates to multi-station filling equipment. The automatic filling machine comprises a linear transmission line provided with a guardrail structure, a plurality of groups of filling head devices are arranged above the linear transmission line, and an adjusting and mounting device is used for adjusting the longitudinal position of each filling head device and the distance between two adjacent filling head devices; the adjusting and mounting device comprises a longitudinal adjusting seat, a transverse adjusting seat is mounted on the longitudinal adjusting seat, a plurality of groups of filling head seats which are connected with the transverse adjusting seat and used for mounting all filling head devices are also included, and the interval between two adjacent groups of filling head seats can be adjusted; the lifting driving structure is used for driving the longitudinal adjusting seat to longitudinally move, and the lifting driving structure is used for adjusting the stroke of the longitudinal adjusting seat. The utility model can meet the filling requirements of packaging bottles with different specifications and sizes, and has strong applicability and high working efficiency.

Description

Multistation filling equipment

Technical Field

The utility model belongs to the technical field of filling equipment, and particularly relates to multi-station filling equipment.

Background

Filling is a critical process for packaging liquid products, and typical filling methods are a secondary filling method and a primary filling method, and sometimes a combined filling method is also used. The filling machine is a main mechanical device in the filling operation process and is widely applied to the food industry, the beverage industry and the chemical industry.

In the actual working process, the packaging bottles are driven to move by the conveying device, the filling operation is completed when the packaging bottles pass through the lower part of the filling device of the filling machine, the conveying device continues to drive the packaging bottles to move, at the moment, the packaging bottle cap supplying device supplies the bottle caps to the packaging bottles one by one, namely, the bottle caps are placed on the bottle mouths of the packaging bottles, then the packaging bottles continue to move, and the bottle caps are buckled on the bottle mouths of the packaging products by the subsequent capping device/cap screwing device. In the actual working process, when the filling production is related to large-batch filling production, the working efficiency of the filling machine becomes an important index for evaluating the filling equipment; in addition, since packaging bottles have various sizes, another index of evaluation on the filling equipment is the suitability of the filling equipment, i.e., the filling equipment is required to be able to perform efficient filling for packaging bottles of different sizes.

However, in the use process, the existing filling equipment has low filling efficiency and poor applicability, and generally can only fill the packaging bottles with fixed specification and size, but cannot meet the filling requirements for the packaging bottles with various different specification and sizes, so that the design of the filling equipment is needed to solve the problems.

Disclosure of utility model

The utility model provides multi-station filling equipment which is reasonable in structural design, high in working efficiency and strong in applicability, and solves the technical problems existing in the prior art.

The utility model adopts the technical proposal for solving the technical problems in the prior art that: the multi-station filling equipment comprises a linear transmission line provided with a guardrail structure, a plurality of groups of filling head devices are arranged above the linear transmission line, and an adjusting and mounting device is used for adjusting the longitudinal position of each filling head device and the distance between two adjacent filling head devices; the adjusting and mounting device comprises a longitudinal adjusting seat, a transverse adjusting seat is mounted on the longitudinal adjusting seat, a plurality of groups of filling head seats which are connected with the transverse adjusting seat and used for mounting all filling head devices are also included, and the interval between two adjacent groups of filling head seats can be adjusted; the lifting driving structure is used for driving the longitudinal adjusting seat to longitudinally move, and the lifting driving structure is used for adjusting the stroke of the longitudinal adjusting seat.

The utility model has the advantages and positive effects that: the utility model provides multi-station filling equipment, which can simultaneously perform filling operation on a plurality of packaging bottles by arranging a plurality of groups of filling head devices which are distributed in parallel, and has high working efficiency compared with the traditional single-station filling; through setting up adjusting installation device, the longitudinal position of each filling head device and the interval between two adjacent filling head devices to satisfy the filling demand of different specification and size's packaging bottle, the suitability is strong.

Preferably: the quantitative liquid supply device is connected with the liquid source and is used for quantitatively supplying liquid to each filling head device.

Preferably: still include the installing support, straight line transmission line and ration buffer unit are all installed on the installing support, still include the bottle device of holding up of installing on the installing support for to remove the packing bottle to filling station and fix a position the centre gripping.

Preferably: the lifting driving structure comprises an upper guide rod connecting plate and a lower guide rod connecting plate which are distributed up and down, an adjusting guide rod which is longitudinally arranged is fixedly connected between the upper guide rod connecting plate and the lower guide rod connecting plate, a longitudinal adjusting seat is movably connected with the adjusting guide rod, and the lifting driving structure further comprises an adjusting driving piece which is used for driving the lower guide rod connecting plate to longitudinally move.

Preferably: the upper limit adjusting structure comprises an adjusting screw rod which is arranged longitudinally and is rotationally connected on the upper guide rod connecting plate, a longitudinal adjusting seat is connected with the adjusting screw rod through a screw nut, and an adjusting hand wheel which is connected with the adjusting screw rod.

Preferably: the filling head device comprises a filling nozzle provided with a liquid inlet and a liquid outlet, and a valve mounting cylinder coaxially fixedly connected with the filling nozzle; and a filling valve mounted on the valve mounting cylinder for controlling the filling nozzle.

Preferably: the filling valve comprises a valve cylinder with a downward extending end connected with the valve mounting cylinder, and a valve piston is mounted at the extending end of the valve cylinder and is in sliding connection with the inner wall of the filling nozzle.

Preferably: the quantitative caching device comprises a plurality of caching barrels which are transversely and parallelly distributed, the inner cavity of each caching barrel is slidably connected with a discharging piston, each caching barrel is connected with a three-way joint and an electromagnetic valve, and each caching barrel is respectively connected with a liquid source and a corresponding filling nozzle through the three-way joint and a liquid pipeline; the device also comprises a discharging lifting seat connected with each discharging piston, and the discharging lifting seat connects a plurality of groups of discharging pistons into a whole; the feeding driving structure is used for driving the discharging lifting seat to longitudinally move.

Preferably: the feeding driving structure comprises a discharging guide seat, a discharging lifting seat and a longitudinally arranged discharging screw rod, wherein the discharging guide seat is connected with the discharging lifting seat in a sliding manner, and the discharging screw rod is rotationally connected on the discharging guide seat; the device also comprises a discharging driving piece which is arranged on the discharging guide seat and used for driving the discharging screw rod to rotate.

Preferably: the bottle holding device comprises a positioning bracket arranged on the mounting bracket, the positioning bracket spans the transmission surface of the linear transmission line, a fixed bottle holding plate with adjustable space and bottle holding grooves are arranged on the positioning bracket, and a plurality of groups of bottle holding grooves distributed at equal intervals along the transmission direction of the linear transmission line are formed on the movable bottle holding plate; the bottle holding driving piece is fixedly connected to the positioning bracket, and the extending end of the bottle holding driving piece is perpendicular to the transmission direction of the linear transmission line and is connected with the movable bottle holding plate; the bottle holding device also comprises a plurality of groups of bottle holding guide rods fixedly connected on the movable bottle holding plate, and each bottle holding guide rod is in sliding connection with the positioning bracket through a linear bearing.

Drawings

FIG. 1 is a schematic diagram of the front view of the present utility model;

FIG. 2 is a schematic perspective view of the adjustment mounting device and the filling head device of the present utility model;

FIG. 3 is a schematic view of a partial cross-sectional structure of a filling valve of the present utility model;

FIG. 4 is a schematic perspective view of a quantitative buffer apparatus according to the present utility model;

Fig. 5 is a schematic perspective view of the bottle holding device in the present utility model.

In the figure: 1. a mounting bracket; 2. a linear transmission line; 3. a guardrail structure; 4. a bottle supporting device; 4-1, a bottle supporting driving piece; 4-2, bottle supporting guide rods; 4-3, a movable bottle supporting plate; 4-4, bottle holding grooves; 4-5, fixing the bottle supporting plate; 5. adjusting the mounting device; 5-1, adjusting the driving piece; 5-2, connecting the lower guide rod with the plate; 5-3, a guide sleeve; 5-4, adjusting a guide rod of the guide rod; 5-5, a longitudinal adjusting seat; 5-6, adjusting a screw rod; 5-7, connecting the upper guide rod with the plate; 5-8, adjusting handwheels; 5-9, filling the headstock; 5-10, a transverse adjusting seat; 6. a quantitative buffer device; 6-1, a discharging driving piece; 6-2, a discharging guide seat; 6-3, discharging a lead screw; 6-4, a discharging lifting seat; 6-5, a discharging piston; 6-6, caching the charging barrel; 6-7, a three-way joint; 6-8, a charging barrel frame; 7. a filling head device; 7-1, filling mouth; 7-2, a valve mounting cylinder; 7-3, filling valve; 7-3-1, valve piston; 7-3-2, valve cylinder; 8. a storage tank; 9. packaging bottle.

Detailed Description

For a further understanding of the utility model, its features and advantages, the following examples are set forth in detail:

Referring to fig. 1, a mounting bracket 1 with multiple groups of supporting legs is mounted at the bottom of the multi-station filling device of the present utility model, and a linear transmission line 2 is fixedly connected to the mounting bracket 1, where in this embodiment, the linear transmission line 2 is a chain plate transmission line. The side wall of the linear transmission line 2 is provided with a guardrail structure 3 for limiting the packaging bottle 9 transmitted on the linear transmission line 2, and in addition, a notch is arranged at the downstream of the guardrail structure 3.

As shown in fig. 1, a plurality of groups of filling head devices 7 are arranged above the linear transmission line 2, and an adjusting and mounting device 5 is further included for adjusting the longitudinal position of each filling head device 7 and the interval between two adjacent filling head devices 7. In addition, in order to guarantee when filling, the packing bottle 9 can be in stable upright state, avoids filling head device 7 spun liquid to strike packing bottle 9 and lead to packing bottle 9 to empty, and this embodiment still includes the bottle holding device 4 of installing on installing support 1 for to remove and fix a position the centre gripping to packing bottle 9 of filling station.

In the actual working process, the linear transmission line 2 transmits the packaging bottles 9 which are arranged in sequence to the filling station, the bottle holding device 4 is started to clamp the bottleneck of the packaging bottles 9, the adjusting and mounting device 5 drives the multiple groups of filling head devices 7 to move downwards to a preset position, at this time, the liquid outlet ends of the filling head devices 7 go deep into the inner cavities of the corresponding packaging bottles 9 to fill, after the filling liquid in the packaging bottles 9 reaches a preset amount, the filling head devices 7 stop filling and move upwards to reset under the driving of the adjusting and mounting device 5, the bottle holding device 4 is started again to release the clamping operation on the packaging bottles 9, and then the linear transmission line 2 drives the packaging bottles 9 to move forwards.

As shown in fig. 5, in this embodiment, the bottle holding device 4 includes a positioning bracket mounted on the mounting bracket 1, the positioning bracket spans the transmission surface of the linear transmission line 2, a fixed bottle holding plate 4-5 and bottle holding grooves 4-4 with adjustable spacing are mounted on the positioning bracket, and a plurality of groups of bottle holding grooves 4-4 distributed at equal intervals along the transmission direction of the linear transmission line 2 are formed on the movable bottle holding plate 4-3; the bottle holding device also comprises a bottle holding driving piece 4-1 which is fixedly connected on the positioning bracket and is transversely arranged, and the extending end of the bottle holding driving piece 4-1 is perpendicular to the transmission direction of the linear transmission line 2 and is connected with the movable bottle holding plate 4-3; the bottle holding device also comprises a plurality of groups of bottle holding guide rods 4-2 fixedly connected on the movable bottle holding plate 4-3, and each bottle holding guide rod 4-2 is in sliding connection with the positioning bracket through a linear bearing.

Referring further to fig. 2, in this embodiment, the adjusting and mounting device 5 includes a longitudinal adjusting seat 5-5, a transverse adjusting seat 5-10 mounted on the longitudinal adjusting seat 5-5, and a plurality of groups of filling head seats 5-9 connected to the transverse adjusting seat 5-10 for mounting each filling head device 7, wherein the spacing between two adjacent groups of filling head seats 5-9 is adjustable. The method comprises the following steps: the lateral surface of the transverse adjusting seat 5-10 is provided with a strip-shaped hole extending along the transmission direction of the linear transmission line 2, the lateral surface of the filling seat 5-9 is provided with a protruding block penetrating through the strip-shaped hole in a sliding way, and the transverse adjusting seat further comprises a locking piece connected with the protruding block and used for locking/releasing the position of the filling seat 5-9, wherein in the embodiment, the locking piece is a locking screw penetrating through the strip-shaped hole.

The adjusting and mounting device 5 further comprises a lifting driving structure for driving the longitudinal adjusting seat 5-5 to longitudinally move and an upper limit adjusting structure for adjusting the stroke of the longitudinal adjusting seat 5-5.

As shown in fig. 2, in this embodiment, the lifting driving structure includes an upper guide rod connecting plate 5-7 and a lower guide rod connecting plate 5-2 which are distributed up and down, an adjusting guide rod 5-4 which is longitudinally arranged is fixedly connected between the upper guide rod connecting plate 5-7 and the lower guide rod connecting plate 5-2, and a guide sleeve 5-3 which is fixedly connected on the mounting bracket 1, wherein the adjusting guide rod 5-4 is slidably connected with the guide sleeve 5-3 through a linear bearing, and in this embodiment, the adjusting guide rod 5-4 is provided with two groups. In this embodiment, the longitudinal adjusting seat 5-5 is movably connected with the adjusting guide rod 5-4, that is, the longitudinal adjusting seat 5-5 is movably connected with the adjusting guide rod 5-4 through a straight line, specifically: the longitudinal adjusting seat 5-5 is provided with an installing sleeve, and the inner cavity of the installing sleeve is provided with a linear bearing which is in sliding connection with the adjusting guide rod 5-4. The lifting driving structure further comprises an adjusting driving piece 5-1 for driving the lower guide rod connecting plate 5-2 to longitudinally move, in the embodiment, the adjusting driving piece 5-1 adopts a linear air cylinder, a cylinder barrel of the air cylinder is connected with the mounting bracket 1, and an extending end of the air cylinder is connected with the lower guide rod connecting plate 5-2.

As shown in FIG. 2, the upper limit adjusting structure comprises a longitudinally arranged adjusting screw 5-6 rotatably connected to an upper guide rod connecting plate 5-7, a longitudinal adjusting seat 5-5 connected with the adjusting screw 5-6 through a screw nut, and an adjusting hand wheel 5-8 connected with the adjusting screw 5-6.

In the working process, the adjusting driving piece 5-1 is started to drive the longitudinal adjusting seat 5-5 to longitudinally move, so that the multiple groups of filling head devices 7 are driven to move between the filling position and the position waiting for filling, when the packaging bottles 9 with different specifications and sizes are required to be filled, the adjusting hand wheel 5-8 can be rotated according to the height of the packaging bottles 9, and then the distance between the longitudinal adjusting seat 5-5 and the upper guide rod connecting plate 5-7 is adjusted, so that the movement stroke of the filling head devices 7 can meet the filling requirement of new packaging bottles 9, and meanwhile, the distance between two adjacent filling head seats 5-9 is adjusted according to the diameter of the packaging bottles 9, so that the distance between the two adjacent filling head devices 7 can meet the filling requirement of the new packaging bottles 9, and the applicability of the filling equipment is improved.

As shown in fig. 3, in this embodiment, the filling head device 7 includes a filling nozzle 7-1 provided with a liquid inlet and a liquid outlet, and further includes a filling valve 7-3 mounted on the filling nozzle 7-1. Further, a liquid passage is arranged at the center of the filling nozzle 7-1, and a liquid inlet and a liquid outlet of the filling nozzle 7-1 are communicated with the liquid passage; the filling head device 7 further comprises a valve mounting cylinder 7-2 coaxially fixedly connected to the filling nozzle 7-1, and the inner cavity of the valve mounting cylinder 7-2 is communicated with the liquid passage of the filling nozzle 7-1. In addition, the filling valve 7-3 is connected with the valve mounting cylinder 7-2, the filling valve 7-3 comprises a valve cylinder 7-3-2 with a downward extending end connected with the valve mounting cylinder 7-2, and a valve piston 7-3-1 which is connected with the inner wall of the liquid passage of the filling nozzle 7-1 in a sliding manner is arranged at the extending end of the valve cylinder 7-3-2.

The liquid inlet of the filling nozzle 7-1 is connected with a liquid source through a liquid pipeline, so as to realize quantitative filling operation and further improve the function of the filling equipment, and as shown in fig. 1, the embodiment further comprises a quantitative buffer device 6 connected with the liquid source and used for quantitatively supplying liquid to each filling head device 7. In addition, the liquid source in this embodiment is a storage tank 8 mounted on the mounting bracket 1, and the quantitative buffer device 6 is connected with the storage tank 8.

As shown in fig. 4, the quantitative buffer device 6 comprises a plurality of buffer barrels 6-6 which are transversely and parallelly distributed, wherein the inner cavities of the buffer barrels 6-6 are respectively and slidably connected with a discharge piston 6-5, the upper parts of the buffer barrels 6-6 are respectively provided with a liquid inlet and outlet pipe orifice, and a three-way joint 6-7 and an electromagnetic valve are arranged at the liquid inlet and outlet pipe orifice and used for controlling the opening and closing of a passage of the three-way joint 6-7. In the embodiment, each buffer charging barrel 6-6 is respectively connected with a liquid source and a corresponding filling nozzle 7-1 through a three-way joint 6-7 and a liquid pipeline; namely, a plurality of buffer charging barrels 6-6 are respectively arranged in one-to-one correspondence with a plurality of filling head devices 7, and the liquid inlet of the filling nozzle 7-1 is connected with one pipe orifice of the three-way joint 6-7 through a liquid pipeline; the storage tank 8 is provided with liquid outlets corresponding to the cache barrels 6-6 in number, each liquid outlet is connected with the other pipe orifice of the three-way joint 6-7 through a liquid pipeline, and ball valves are arranged on each liquid outlet.

The quantitative caching device 6 also comprises a discharge lifting seat 6-4 connected with each discharge piston 6-5, and the discharge lifting seat 6-4 connects a plurality of groups of discharge pistons 6-5 into a whole; and the feeding driving structure is used for driving the discharging lifting seat 6-4 to longitudinally move.

Wherein, the feed driving structure includes ejection of compact guide holder 6-2, ejection of compact elevating seat 6-4 and ejection of compact guide holder 6-2 sliding connection, still include the vertical ejection of compact lead screw 6-3 that sets up of rotation connection on ejection of compact guide holder 6-2, ejection of compact elevating seat 6-4 is connected with ejection of compact lead screw 6-3 through the screw. The feeding driving structure also comprises a discharging driving piece 6-1 which is arranged on the discharging guide seat 6-2 and used for driving the discharging screw rod 6-3 to rotate. Wherein, the discharging driving piece 6-1 is a gear motor. In this embodiment, the discharging guide seat 6-2 is fixedly connected with the mounting bracket 1, and mainly comprises two mounting plates distributed up and down, a guide rod longitudinally arranged is fixedly connected between the two mounting plates, and the discharging lifting seat 6-4 is slidably connected with the guide rod of the discharging guide seat 6-2 through a linear bearing.

The working process comprises the following steps:

When the device works, firstly, liquid to be filled is injected into the storage tank 8, and at the moment, the ball valves at all liquid outlets of the storage tank 8 are in a closed state; when the material taking operation is required, the ball valves are opened, then the electromagnetic valve controls the passage of the three-way joint 6-7, so that the material storage tank 8 and the buffer material cylinder 6-6 in the quantitative buffer device 6 are in a communication state, the discharging pistons 6-5 are driven by the feeding driving structure to move downwards, so that vacuum is formed in the material storage cylinders 6-6, and liquid in the material storage tank 8 is absorbed by negative pressure to enter the material storage cylinders 6-6, so that the material taking operation is completed;

The method comprises the steps that an empty packaging bottle 9 is placed on a linear transmission line 2 by workers, the packaging bottle 9 is transmitted to a filling station by the linear transmission line 2, a bottle holding device 4 clamps the bottleneck of the packaging bottle 9, a plurality of groups of filling head devices 7 are driven by an adjusting and installing device 5 to move downwards, the filling head devices 7 penetrate into inner cavities of the corresponding packaging bottles 9, then a three-way joint 6-7 is controlled by an electromagnetic valve, a buffer charging barrel 6-6 in a quantitative buffer device 6 is communicated with a filling nozzle 7-1 in the filling head devices 7, then each discharging piston 6-5 moves upwards under the driving of a feeding driving structure, liquid in each buffer charging barrel 6-6 flows to the corresponding filling nozzle 7-1 under the extrusion action of the corresponding discharging piston 6-5, after filling is completed, the filling head devices 7-1 are filled into the packaging bottles 9, a liquid outlet of the filling nozzle 7-1 is closed by a filling valve 7-3 in the filling head devices 7, and filling operation is stopped; then the adjusting and installing device 5 is started again to drive the multiple groups of filling head devices 7 to move upwards for resetting, the bottle holding device 4 is started again to release the clamping operation on the packaging bottles 9, and then the linear transmission line 2 drives the packaging bottles 9 to move forwards to the next working procedure;

When the packaging bottles 9 with different specification and sizes are required to be filled, the adjusting and mounting device 5 can be adjusted according to the specification and size of the packaging bottles 9 (the specific adjusting process is as above and is not repeated here), so that the position of the filling head device 7 can meet the filling requirement.

Claims (10)

1. A multistation filling equipment, characterized by: the automatic filling machine comprises a linear transmission line (2) provided with a guardrail structure (3), a plurality of groups of filling head devices (7) are arranged above the linear transmission line (2), and an adjusting and mounting device (5) is used for adjusting the longitudinal position of each filling head device (7) and the distance between two adjacent filling head devices (7); the adjusting and mounting device (5) comprises a longitudinal adjusting seat (5-5), wherein a transverse adjusting seat (5-10) is mounted on the longitudinal adjusting seat (5-5), and the adjusting and mounting device also comprises a plurality of groups of filling head seats (5-9) which are connected with the transverse adjusting seat (5-10) and are used for mounting each filling head device (7), and the space between two adjacent groups of filling head seats (5-9) is adjustable; the lifting driving structure is used for driving the longitudinal adjusting seat (5-5) to longitudinally move, and the lifting driving structure is also used for adjusting the stroke of the longitudinal adjusting seat (5-5).

2. The multi-station filling apparatus of claim 1, wherein: the quantitative liquid supply device is characterized by further comprising a quantitative buffer device (6) connected with a liquid source and used for quantitatively supplying liquid to each filling head device (7).

3. The multi-station filling apparatus of claim 1, wherein: still include installing support (1), straight line transmission line (2) and ration buffer unit (6) are all installed on installing support (1), still include bottle holding device (4) of installing on installing support (1) for to remove to packing bottle (9) of filling station and fix a position the centre gripping.

4. The multi-station filling apparatus of claim 1, wherein: the lifting driving structure comprises an upper guide rod connecting plate (5-7) and a lower guide rod connecting plate (5-2) which are distributed up and down, an adjusting guide rod (5-4) which is longitudinally arranged is fixedly connected between the upper guide rod connecting plate (5-7) and the lower guide rod connecting plate (5-2), a longitudinal adjusting seat (5-5) is movably connected with the adjusting guide rod (5-4), and an adjusting driving piece (5-1) which is used for driving the lower guide rod connecting plate (5-2) to longitudinally move.

5. The multi-station filling apparatus of claim 1, wherein: the upper limit adjusting structure comprises a longitudinally arranged adjusting screw rod (5-6) rotationally connected with the upper guide rod connecting plate (5-7), a longitudinal adjusting seat (5-5) is connected with the adjusting screw rod (5-6) through a screw nut, and an adjusting hand wheel (5-8) connected with the adjusting screw rod (5-6).

6. The multi-station filling apparatus of claim 1, wherein: the filling head device (7) comprises a filling nozzle (7-1) provided with a liquid inlet and a liquid outlet, and a valve mounting cylinder (7-2) coaxially fixedly connected with the filling nozzle (7-1); also comprises a filling valve (7-3) which is arranged on the valve mounting cylinder (7-2) and used for controlling the filling nozzle (7-1).

7. The multi-station filling apparatus of claim 6, wherein: the filling valve (7-3) comprises a valve cylinder (7-3-2) with a downward extending end connected with the valve mounting cylinder (7-2), a valve piston (7-3-1) is mounted at the extending end of the valve cylinder (7-3-2), and the valve piston (7-3-1) is in sliding connection with the inner wall of the filling nozzle (7-1).

8. The multi-station filling apparatus of claim 2, wherein: the quantitative caching device (6) comprises a plurality of caching barrels (6-6) which are transversely distributed in parallel, the inner cavity of each caching barrel (6-6) is connected with a discharging piston (6-5) in a sliding mode, each caching barrel (6-6) is connected with a three-way joint (6-7) and an electromagnetic valve, and each caching barrel (6-6) is connected with a liquid source and a corresponding filling nozzle (7-1) through the three-way joint (6-7) and a liquid pipeline respectively; the device also comprises a discharging lifting seat (6-4) connected with each discharging piston (6-5), wherein the discharging lifting seat (6-4) connects a plurality of groups of discharging pistons (6-5) into a whole; the device also comprises a feeding driving structure for driving the discharging lifting seat (6-4) to longitudinally move.

9. The multi-station filling apparatus of claim 8, wherein: the feeding driving structure comprises a discharging guide seat (6-2), a discharging lifting seat (6-4) is in sliding connection with the discharging guide seat (6-2), and further comprises a longitudinally arranged discharging lead screw (6-3) which is rotationally connected on the discharging guide seat (6-2), wherein the discharging lifting seat (6-4) is connected with the discharging lead screw (6-3) through a screw nut; the device also comprises a discharging driving piece (6-1) which is arranged on the discharging guide seat (6-2) and used for driving the discharging screw rod (6-3) to rotate.

10. A multi-station filling apparatus according to claim 3, wherein: the bottle holding device (4) comprises a positioning bracket arranged on the mounting bracket (1), the positioning bracket spans the transmission surface of the linear transmission line (2), a fixed bottle holding plate (4-5) and bottle holding grooves (4-4) with adjustable intervals are arranged on the positioning bracket, and a plurality of groups of bottle holding grooves (4-4) distributed at equal intervals along the transmission direction of the linear transmission line (2) are arranged on the movable bottle holding plate (4-3); the bottle holding device also comprises a bottle holding driving piece (4-1) which is fixedly connected on the positioning bracket and is transversely arranged, and the extending end of the bottle holding driving piece (4-1) is perpendicular to the transmission direction of the linear transmission line (2) and is connected with the movable bottle holding plate (4-3); the bottle holding device also comprises a plurality of groups of bottle holding guide rods (4-2) fixedly connected on the movable bottle holding plate (4-3), and each bottle holding guide rod (4-2) is in sliding connection with the positioning bracket through a linear bearing.