CN210710693U - Filling device and filling machine - Google Patents

Abstract

The utility model relates to the technical field of packaging machinery, especially, relate to a filling device and liquid filling machine. The filling device comprises a control valve and a measuring cup; the control valve comprises a valve body and a valve core; the valve core penetrates through a liquid inlet hole, a cavity and a liquid outlet hole on the valve body; the liquid inlet hole is communicated with the flow port; the valve core is provided with a flow restraining ring which is in clearance fit with the liquid inlet hole; the valve core can drive the flow-inhibiting ring to reciprocate in the liquid inlet hole; when the flow restraining ring moves towards the liquid outlet hole, the gap between the flow restraining ring and the liquid inlet hole is gradually increased; when the flow restraining ring moves away from the liquid outlet hole, the gap between the flow restraining ring and the liquid inlet hole is gradually reduced. The filling machine comprises the filling device. The utility model provides a filling device and liquid filling machine to alleviate the difficult technical problem of control of the flow and the velocity of flow of the graduated flask play liquid of the filling device that exists among the prior art.

Description

Filling device and filling machine

Technical Field

The utility model belongs to the technical field of the packaging machinery technique and specifically relates to a filling device and liquid filling machine are related to.

Background

The filling device is used for filling liquid into the container, is widely applied to industries of food, medicine daily chemicals, grease and the like, and can be used for filling liquid with different viscosities.

The filling device generally comprises a measuring cup, wherein a flow opening is formed in the measuring cup, and liquid is filled into a container bottle, a container tank and the like through the flow opening. However, in the initial stage of liquid filling, because the liquid level in the measuring cup is high and the hydraulic pressure is large, the flow rate of liquid flowing out from the flow opening is large and the flow speed is high, so that liquid splashing is easily caused to pollute a working surface and waste of liquid is easily caused; in addition, after pouring a period of time, because liquid level gradually low and hydraulic pressure is gradually little in the graduated flask, the liquid is gradually little, the velocity of flow that flows out from the circulation mouth is slow gradually, has influenced filling efficiency.

Therefore, the present application provides a new filling device and a new filling machine for solving the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a filling device to alleviate the difficult technical problem of control of the flow and the velocity of flow of filling device's graduated flask play liquid that exists among the prior art.

An object of the utility model is to provide a liquid filling machine to further alleviate the difficult technical problem of control of the flow and the velocity of flow of filling device's graduated flask play liquid that exists among the prior art.

Based on the first purpose, the utility model provides a filling device, which comprises a control valve and a measuring cup provided with a flow port; the control valve comprises a valve body and a valve core; the valve core sequentially penetrates through a liquid inlet hole, a cavity and a liquid outlet hole in the valve body; the valve body is connected with the measuring cup, and the liquid inlet hole is communicated with the circulation port; the valve core is provided with a flow restraining ring, and the flow restraining ring is in clearance fit with the first hole section;

the valve core can drive the flow restraining ring to reciprocate in the liquid inlet hole; when the flow restraining ring moves towards the liquid outlet hole, the gap between the flow restraining ring and the liquid inlet hole is gradually increased; when the flow restraining ring moves away from the liquid outlet hole, the gap between the flow restraining ring and the liquid inlet hole is gradually reduced.

In the above technical solution, further, the liquid inlet hole includes a first hole section and a second hole section along an axial direction thereof, and the second hole section is close to the cavity;

the second hole section is a frustum body, and the larger end face of the frustum body is close to the cavity.

In any of the above technical solutions, further, a limit ring is further disposed on the valve core, and the limit ring is disposed in the cavity and is matched with the cavity; the limiting ring is provided with a water passing groove, and the second hole section is communicated with the liquid outlet hole through the water passing groove.

In any one of the above technical solutions, further, the water passing grooves are multiple and are uniformly arranged along the circumferential direction of the limiting ring.

In any of the above technical solutions, further, a sealing ring is disposed on the valve core, and the sealing ring can seal the cavity;

a circulation cavity is further arranged in the valve body, the circulation cavity is arranged between the cavity and the liquid outlet hole, and the sealing ring is in clearance fit with the circulation cavity;

when the valve core moves for a first stroke, the sealing ring moves from the cavity to the flow through cavity, and the flow restraining ring is arranged in the first hole section; when the valve core moves for a second stroke, the flow restraining ring moves from the first hole section to the second hole section, and the sealing ring is arranged in the flow cavity;

the second stroke is greater than the first stroke.

In any of the above technical solutions, further, the filling device further includes an elastic member;

one end of the elastic piece is fixedly connected with the measuring cup, and the other end of the elastic piece is fixed relative to the valve core;

the elastic piece can make the valve core drive the sealing ring to always have the trend of moving towards the cavity.

In any of the above technical solutions, further, the device further includes a driving assembly; the driving assembly comprises an air cylinder and a transmission rod;

the cylinder barrel of the air cylinder is connected with the measuring cup, and the valve core is connected with the piston rod of the air cylinder through the transmission rod.

In any of the above technical solutions, further, the transmission rod and the valve core are in threaded connection.

In any of the above technical solutions, further, a pouring nozzle is disposed at the liquid outlet.

Based on the second purpose, the utility model provides a filling machine, which comprises a liquid storage tank and the filling device;

the liquid storage tank is communicated with the inlet end of the measuring cup through the liquid inlet valve, a weighing sensor is arranged at the bottom of the measuring cup, and the weighing sensor can feed back and adjust the opening and closing states of the liquid inlet valve and the control valve.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:

when in use, the container is placed at the liquid outlet of the valve body. At the initial stage of liquid filling, the valve core drives the flow inhibition ring to move away from the liquid outlet hole through the movement of the valve core, so that the gap between the flow inhibition ring and the liquid inlet hole is gradually reduced. The liquid in the measuring cup flows through the liquid inlet hole and the cavity in sequence and flows to the liquid outlet hole through the gap between the flow restraining ring and the liquid inlet hole, and is poured into the container from the liquid outlet hole.

After a period of time of filling, the valve core moves to drive the flow-inhibiting ring to move towards the liquid outlet hole, so that the gap between the flow-inhibiting ring and the liquid inlet hole is gradually increased. The drift diameter between the flow restraining ring and the liquid inlet hole is large, so that the flow speed of liquid is accelerated, and the filling efficiency is improved.

When filling is to be finished, the valve core moves to drive the flow inhibition ring to move away from the liquid outlet hole again, so that a gap between the flow inhibition ring and the liquid inlet hole is gradually reduced, the drift diameter between the flow inhibition ring and the liquid inlet hole is reduced, the flow speed of liquid is slowed down to achieve a good liquid collecting effect, and when a container or a measuring cup is weighed, the weighing precision can be improved.

In conclusion, the filling device relieves the technical problem that the flow and the flow speed of the measuring cup liquid of the filling device in the prior art are difficult to control.

The utility model provides a filling machine, include the filling device, the utility model provides a filling machine, include the filling device.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a filling device according to an embodiment of the present invention;

fig. 2 is a schematic partial structural diagram of a filling device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a valve core and a transmission rod of a filling device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a valve element of a filling device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first state of a control valve of a filling device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a second state of a control valve of a filling device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a third state of a control valve of a filling device according to an embodiment of the present invention;

fig. 8 is a front view, partially in cross-section, of a filling machine according to an embodiment of the present invention;

fig. 9 is a cross-sectional view of the filling machine shown in fig. 8;

fig. 10 is an enlarged view of a portion a of the filling machine shown in fig. 9.

Icon: 1-a control valve; 11-a valve body; 12-a valve core; 2-measuring cup; 3-a drive assembly; 31-a cylinder; 32-a transmission rod; 41-liquid inlet hole; 411 — first bore section; 412-a second bore section; 42-a cavity; 43-liquid outlet; 44-a flow-through chamber; 5-a flow-inhibiting ring; 6-a limit ring; 61-passing through a water tank; 7-sealing ring; 8-an elastic member; 9-filling a nozzle; 10-a container;

110-a liquid storage tank; 120-liquid inlet valve; 130-load cell.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

Referring to fig. 1 to 7, the present embodiment provides a filling device, which includes a control valve 1 and a measuring cup 2 with a flow port; the measuring cup 2 is used for containing liquids such as wines and beverages.

The control valve 1 comprises a valve body 11 and a valve core 12; the valve core 12 sequentially passes through a liquid inlet hole 41, a cavity 42 and a liquid outlet hole 43 on the valve body 11; the valve body 11 is connected with the measuring cup 2, and the liquid inlet hole 41 is communicated with the circulation port; the valve core 12 is provided with a flow restraining ring 5, and the flow restraining ring 5 is in clearance fit with the liquid inlet hole 41.

The valve core 12 can drive the flow-restraining ring 5 to reciprocate in the liquid inlet hole 41; when the flow restraining ring 5 moves towards the liquid outlet hole 43, the gap between the flow restraining ring 5 and the liquid inlet hole 41 is gradually increased; when the flow restraining ring 5 moves away from the liquid outlet hole 43, the gap between the flow restraining ring 5 and the liquid inlet hole 41 is gradually reduced. The valve body 12 moves, and the valve body 12 moves in the axial direction.

In use, the container 10 is placed in the liquid outlet 43 of the valve body 11. Referring to fig. 6, in the initial stage of liquid filling, the valve core moves to drive the flow-suppressing ring to move away from the liquid outlet hole, so that the gap between the flow-suppressing ring and the liquid inlet hole is gradually reduced. The liquid in the measuring cup flows through the liquid inlet hole and the cavity in sequence and flows to the liquid outlet hole through the gap between the flow restraining ring and the liquid inlet hole, and is poured into the container from the liquid outlet hole.

Referring to fig. 7, after a period of time of filling, the valve core moves to drive the flow-suppressing ring to move towards the liquid outlet hole, so that the gap between the flow-suppressing ring and the liquid inlet hole is gradually increased. The drift diameter between the flow restraining ring and the liquid inlet hole is large, so that the flow speed of liquid is accelerated, and the filling efficiency is improved.

Referring to fig. 6, when filling is to be completed, the valve core moves to drive the flow-restraining ring to move away from the liquid outlet hole again, so that a gap between the flow-restraining ring and the liquid inlet hole is gradually reduced, the drift diameter between the flow-restraining ring and the liquid inlet hole is reduced, the flow rate of liquid is slowed down to achieve a good liquid collecting effect, and when a container or a measuring cup is weighed, the weighing precision can be improved.

In conclusion, the filling device relieves the technical problem that the flow and the flow speed of the measuring cup liquid of the filling device in the prior art are difficult to control.

Preferably, referring to fig. 5-7, the liquid inlet hole 41 includes a first hole section 411 and a second hole section 412 along the axial direction thereof, and the second hole section 412 is adjacent to the cavity 42; the second bore section 412 is frustoconical with the larger end of the frustoconical body being adjacent the cavity 42. That is, the flow suppressing ring 5 is in clearance fit with both the first hole section 411 and the second hole section 412, and since the second hole section 412 is a frustum, when the flow suppressing ring 5 moves to approach the liquid outlet hole 43, the flow suppressing ring 5 moves from the first hole section 411 to the second hole section 412, and the clearance between the flow suppressing ring 5 and the second hole section 412 is gradually increased.

Referring to fig. 6, in the initial stage of liquid filling, the valve core moves to drive the flow-suppressing ring to move to the first hole section 411, and since the flow-suppressing ring 5 is in clearance fit with the first hole section 411, the liquid in the measuring cup 2 sequentially flows through the second hole section 412 and the cavity 42 and flows to the liquid outlet 43 through the clearance between the flow-suppressing ring 5 and the first hole section 411, and is filled into the container 10 from the liquid outlet 43, the through diameter between the flow-suppressing ring 5 and the first hole section 411 is small at this time, so that the flow rate of the liquid is slow to avoid liquid splashing, thereby avoiding polluting the working surface and causing liquid waste. Referring to fig. 7, after a period of filling, the valve core 12 moves to make the valve core 12 drive the flow-suppressing ring 5 to move from the first hole section 411 to the second hole section 412, and at this time, the drift diameter between the flow-suppressing ring 5 and the second hole section 412 is larger, so that the flow rate of the liquid is accelerated, and the filling efficiency is improved. Referring to fig. 6, when filling is about to be completed, the valve core 12 moves, so that the valve core 12 drives the flow-suppressing ring 5 to move to the first hole section 411 again, so as to reduce the drift diameter between the flow-suppressing ring 5 and the first hole section 411, and slow the flow rate of the liquid to achieve a better liquid-collecting effect.

In addition, since the second hole section 412 is a frustum, when the flow suppressing ring 5 is located in the second hole section 412, the flow suppressing ring 5 is located at different positions in the second hole section 412, and the gap between the flow suppressing ring 5 and the second hole section 412 is also different.

This arrangement can facilitate adjustment of the drift diameter between the second bore section 412 and the flow-suppressing collar 5. When the valve core 12 moves to make the flow restraining ring 5 move in the second hole section 412 to the direction close to the liquid outlet hole 43, the drift diameter between the second hole section 412 and the flow restraining ring 5 is gradually increased, so that the flow speed of the liquid is gradually increased; conversely, when the valve core 12 moves to move the flow suppressing ring 5 away from the liquid outlet hole 43 in the second hole section 412, the path between the second hole section 412 and the flow suppressing ring 5 gradually decreases, and thus the flow rate of the liquid gradually decreases. In summary, by adjusting the position of the flow-restraining ring 5 in the second hole section 412, the drift diameter between the second hole section 412 and the flow-restraining ring 5 can be adjusted, thereby facilitating the adjustment of the liquid outlet speed of the control valve 1.

Preferably, referring to fig. 3 and 4, the valve core 12 is further provided with a position-limiting ring 6, please refer to fig. 5-7, the position-limiting ring 6 is arranged in the cavity 42 and matched with the cavity 42; the limiting ring 6 is provided with a water passing groove 61, and the second hole section 412 is communicated with the liquid outlet hole 43 through the water passing groove 61.

Due to the arrangement, when the valve core 12 moves, the limiting ring 6 can move in the cavity 42, and the limiting ring 6 is matched with the cavity 42, so that the valve core 12 can be limited by the limiting ring 6, the valve core 12 is prevented from shaking along the radial direction, and the higher concentricity between the valve core 12 and the cavity 42 is kept.

Referring to fig. 6, there are a plurality of water passing grooves 61, and the water passing grooves 61 are uniformly arranged along the circumferential direction of the stop collar 6. Due to the arrangement, liquid in the second hole section can uniformly penetrate through the limiting ring 6, so that the liquid outlet of the liquid outlet hole 43 is more uniform, and the liquid waste caused by splashing or liquid outlet direction change and the like when the liquid is discharged is further prevented.

Preferably, as shown in fig. 3-7, the valve core 12 is provided with a sealing ring 7, and the sealing ring 7 can seal the cavity 42; a circulation cavity 44 is further arranged in the valve body 11, the circulation cavity 44 is arranged between the cavity 42 and the liquid outlet hole 43, and the sealing ring 7 is in clearance fit with the circulation cavity 44.

Referring to fig. 6, when the spool 12 moves for a first stroke, the sealing ring 7 moves from the cavity 42 into the flow-through cavity 44, and the flow-suppressing ring 5 is in the first bore section 411. Referring to fig. 7, when the spool 12 moves a second stroke, the flow suppressing ring 5 moves from the first bore section 411 to the second bore section 412, and the sealing ring 7 flows in the flow-through chamber 44. The second stroke is greater than the first stroke.

That is, referring to fig. 5, in the initial state, the valve core 12 is not moved, and the sealing ring 7 is located in the cavity 42, so that the cavity 42 is sealed, and the control valve 1 is in the closed state.

Referring to fig. 6, when the valve core 12 moves for the first stroke, the sealing ring 7 moves from the cavity 42 to the circulation cavity 44, and the sealing ring 7 is in clearance fit with the circulation cavity 44, so that a clearance is formed between the sealing ring 7 and the circulation cavity 44, and the liquid can enter the circulation cavity 44 from the cavity 42 and further output through the liquid outlet hole 43, and the control valve 1 is in an open state; and the flow-suppressing ring 5 is in the first hole section 411 at this time, so that the flow rate of the liquid entering the cavity 42 through the first hole section 411 is slow and the flow rate is small. In summary, at this time, the control valve 1 is in the open state, and the control valve 1 controls the flow rate of the liquid output from the measuring cup 2 to be slow and small, so that the method is suitable for the initial stage of liquid filling.

Referring to fig. 7, the valve core 12 continues to move for a certain distance until the valve core 12 moves for a second stroke, and the control valve 1 is still in an open state at this time because the sealing ring 7 is still in the flow-through cavity 44; and the flow suppressing ring 5 moves from the first orifice section 411 to the second orifice section 412, the liquid entering the chamber 42 through the first orifice section 411 has a fast flow rate and a large flow rate. In conclusion, the control valve 1 is in an open state, and the control valve 1 controls the flow rate of the liquid output from the measuring cup 2 to be fast and the flow rate to be large, so that the liquid measuring device is suitable for the middle section of liquid filling.

Therefore, the filling device can control the on-off of the liquid outlet of the measuring cup 2 through the control valve 1, and can control the liquid outlet speed and flow when the measuring cup 2 is used for discharging liquid.

Preferably, as shown in fig. 1 and 2, the filling device further comprises an elastic member 8; one end of the elastic element 8 is fixedly connected with the measuring cup 2, and the other end is fixed relative to the valve core 12; the elastic element 8 can make the valve core 12 and the sealing ring 7 always have the tendency of moving towards the cavity 42.

That is, in this arrangement, in the initial state, under the pre-tightening force of the elastic element 8, the elastic element 8 makes the sealing ring 7 always be in the cavity 42 to maintain the sealing of the cavity 42, so that the sealing state of the cavity 42 is maintained, and at this time, the control valve 1 is in the off state to prevent the control valve 1 from accidentally leaking.

Alternatively, the elastic member 8 is a spring, a leaf spring, a pressure spring, or the like, and is not limited herein.

Optionally, as shown in fig. 1 and 2, a driving assembly 3 is further included. Wherein, the driving assembly 3 comprises a cylinder 31 and a transmission rod 32; the cylinder of the cylinder 31 is connected to the measuring cup 2, and the valve core 12 is connected to the piston rod of the cylinder 31 through a transmission rod 32. When the piston rod extends and retracts relative to the cylinder, the transmission rod 32 can drive the valve core 12 to move.

The driving unit 3 may be a ball screw, a linear module, or the like, and is not limited thereto as long as the driving spool 12 can reciprocate.

Preferably, the cylinder 31 is a two-stroke cylinder, also called a two-stage cylinder, capable of delivering two different strokes, for example a first stroke and a second stroke, respectively.

Alternatively, the transmission rod 32 is connected to the piston rod of the cylinder 31 by bolting or snapping, fastening, etc. The transmission rod 32 is connected with the valve core 12 through a threaded connection, a clamping connection or a buckling connection.

Preferably, as shown in FIG. 3, the drive rod 32 is threadably coupled to the valve cartridge 12. For example, the valve core 12 is provided with a connecting hole, and an internal thread is arranged in the connecting hole; the transmission rod 32 is provided with an external thread matched with the internal thread; the transmission rod 32 is connected with the valve core 12 through the matching connection of the internal thread and the external thread, and the length of the transmission rod 32 can be adjusted by controlling the depth of the transmission rod 32 screwed in the valve core 12.

Or, the transmission rod 32 is provided with a connecting hole, and an internal thread is arranged in the connecting hole; the valve core 12 is provided with an external thread matched with the internal thread; the transmission rod 32 is connected with the valve core 12 through the matching connection of the internal thread and the external thread, and the length of the transmission rod 32 can be adjusted through the depth of the control valve 1 screwed in the transmission rod 32.

In summary, the length of the transmission rod 32 is adjusted to adjust the position of the valve core 12 in the valve body 11, so as to compensate for the machining error of the valve core 12.

Preferably, as shown in fig. 1, the pouring nozzle 9 is arranged at the liquid outlet hole 43. This arrangement facilitates the introduction of the liquid from the liquid outlet hole 43 into the container 10 by placing the container 10 under the spout 9.

Example two

The second embodiment provides a filling machine, the filling machine includes the filling device of the first embodiment, the technical features of the filling device disclosed in the first embodiment are also applicable to the second embodiment, and the technical features of the filling device disclosed in the first embodiment are not described repeatedly. Embodiments of the filling machine will be described in further detail below with reference to the accompanying drawings.

For economy of space, the improved features of this embodiment are embodied in fig. 8-10, and thus the solution of this embodiment is described in connection with fig. 8-10.

Referring to fig. 8-10, the filling machine provided in this embodiment, including the above-mentioned filling device, further alleviates the technical problem existing in the prior art that the flow rate and flow rate of the liquid discharged from the measuring cup 2 of the filling device are not easy to control.

The filling machine further comprises a liquid storage tank 110, the liquid storage tank 110 is communicated with the inlet end of the measuring cup 2 through a liquid inlet valve 120, a weighing sensor 130 is arranged at the bottom of the measuring cup 2, and the weighing sensor 130 can feed back and adjust the opening and closing states of the liquid inlet valve 120 and the control valve 1.

Wherein, the liquid storage tank 110 feeds liquid for the measuring cup 2 through the liquid inlet valve 120, and the measuring cup 2 fills liquid for the container 10 through the control valve 1. The load cell 130 located at the bottom of the measuring cup 2 is able to detect the weight of the measuring cup 2 and the liquid inside it.

The filling machine determines the filling capacity of the container 10 by the combined action of the weighing sensor 130, the liquid inlet valve 120 and the control valve 1, thereby increasing the filling accuracy of the filling machine. Specifically, when control valve 1 is closed, feed liquor valve 120 is opened, and the interior liquid of liquid storage pot 110 pours into graduated flask 2 into through feed liquor valve 120, and when weighing sensor 130 detected the weight of graduated flask 2 and its inside liquid and reached preset first weight, feed liquor valve 120 closed, stopped the feed liquor.

Opening the control valve 1, filling the liquid into the container 10 by the measuring cup 2 through the control valve 1, detecting that the weight of the measuring cup 2 and the liquid in the measuring cup 2 is gradually reduced by the weighing sensor 130 at the moment, closing the control valve 1 and stopping filling the liquid into the container 10 until the weight of the measuring cup 2 and the liquid in the measuring cup is reduced to a second weight, wherein the difference value between the first weight and the second weight is the weight of the liquid filled into the container 10.

Preferably, the filling machine further includes a controller (e.g., a single chip microcomputer, a PLC, etc.), the liquid inlet valve 120 and the control valve 1 are both electrically operated valves, and both the liquid inlet valve 120 and the control valve 1 are electrically connected to the controller.

When the liquid storage tank 110 is required to fill the measuring cup 2, the controller controls the control valve 1 to close and the liquid inlet valve 120 to open correspondingly, liquid in the liquid storage tank 110 is injected into the measuring cup 2 through the liquid inlet valve 120 until the weighing sensor 130 detects that the weight of the measuring cup 2 and the weight of the liquid inside the measuring cup 2 reach a preset first weight, a first signal is sent to the controller, and the controller controls the liquid inlet valve 120 to close correspondingly and stops liquid inlet.

When the measuring cup 2 is required to fill the container 10, the controller correspondingly controls to open the control valve 1, the measuring cup 2 fills the container 10 through the control valve 1, at the moment, the weighing sensor 130 detects that the weight of the measuring cup 2 and the liquid in the measuring cup 2 is gradually reduced until the weight of the measuring cup 2 and the liquid in the measuring cup 2 is reduced to a second weight, a second signal is sent to the controller, the controller correspondingly controls to close the control valve 1, and the filling of the container 10 is stopped.

It should be noted that the controller and the opening and closing of the liquid inlet valve 120 controlled by the controller are common knowledge in the art, and therefore, the detailed description thereof is omitted. The controller controls the control valve 1 by controlling the valve core 12 to drive the flow suppressing ring 5 to reciprocate in the liquid inlet hole 41, specifically, the controller is realized by controlling the piston rod of the cylinder 31 correspondingly, and the controller drives the valve core 12 of the control valve 1 to move by controlling the piston rod of the cylinder. Moreover, the controller controls the movement of the piston rod of the cylinder is a common knowledge in the art, and therefore, the detailed description thereof is omitted.

In summary, the filling principle of the filling machine for the container 10 is mass quantitative filling, the filling capacity is measured by adopting a weight reduction method, and the filling precision of the filling machine is improved by combining the combined action of the control valve 1.

The filling machine of this embodiment has the advantages of the filling device of the first embodiment, which have been described in detail in the first embodiment, and will not be repeated here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A filling device is characterized by comprising a control valve (1) and a measuring cup (2) provided with a flow opening; the control valve (1) comprises a valve body (11) and a valve core (12); the valve core (12) sequentially penetrates through a liquid inlet hole (41), a cavity (42) and a liquid outlet hole (43) on the valve body (11); the valve body (11) is connected with the measuring cup (2), and the liquid inlet hole (41) is communicated with the circulation port; the valve core (12) is provided with a flow restraining ring (5), and the flow restraining ring (5) is in clearance fit with the liquid inlet hole (41);

the valve core (12) can drive the flow restraining ring (5) to reciprocate in the liquid inlet hole (41); when the flow restraining ring (5) moves towards the liquid outlet hole (43), the gap between the flow restraining ring (5) and the liquid inlet hole (41) is gradually increased; when the flow restraining ring (5) moves away from the liquid outlet hole (43), the gap between the flow restraining ring (5) and the liquid inlet hole (41) is gradually reduced.

2. The filling apparatus according to claim 1, wherein the liquid inlet aperture (41) comprises, in its axial direction, a first aperture section (411) and a second aperture section (412), and the second aperture section (412) is adjacent to the cavity (42);

the second hole section (412) is a frustum body, and the larger end face of the frustum body is close to the cavity (42).

3. The filling device according to claim 2, wherein a spacing collar (6) is further disposed on the valve core (12), and the spacing collar (6) is disposed in the cavity (42) and is matched with the cavity (42); a water passing groove (61) is formed in the limiting ring (6), and the second hole section (412) is communicated with the liquid outlet hole (43) through the water passing groove (61).

4. The filling device according to claim 3, wherein the water passing grooves (61) are provided in plurality, and the water passing grooves (61) are uniformly arranged along the circumferential direction of the limiting ring (6).

5. The filling device according to claim 2, wherein a sealing ring (7) is arranged on the valve core (12), and the sealing ring (7) can seal the cavity (42);

a circulation cavity (44) is further arranged in the valve body (11), the circulation cavity (44) is arranged between the cavity (42) and the liquid outlet hole (43), and the sealing ring (7) is in clearance fit with the circulation cavity (44);

when the valve core (12) moves for a first stroke, the sealing ring (7) moves from the cavity (42) to the circulation cavity (44), and the flow restraining ring (5) is arranged in the first hole section (411); when the valve core (12) moves for a second stroke, the flow restraining ring (5) moves from the first hole section (411) to the second hole section (412), and the sealing ring (7) is in the circulation cavity (44);

the second stroke is greater than the first stroke.

6. A filling device according to claim 5, further comprising a resilient member (8);

one end of the elastic piece (8) is fixedly connected with the measuring cup (2), and the other end of the elastic piece is fixed relative to the valve core (12);

the elastic piece (8) can enable the valve core (12) to drive the sealing ring (7) to always have the trend of moving towards the cavity (42).

7. The filling device according to any one of claims 1 to 6, further comprising a drive assembly (3); the driving assembly (3) comprises a cylinder (31) and a transmission rod (32);

the cylinder barrel of the air cylinder (31) is connected to the measuring cup (2), and the valve core (12) is connected to the piston rod of the air cylinder (31) through the transmission rod (32).

8. The filling device according to claim 7, wherein the drive rod (32) and the valve cartridge (12) are screwed together.

9. A filling device according to claim 7, wherein a filling nozzle (9) is arranged at the exit opening (43).

10. A filling machine, characterized by comprising a fluid reservoir (110) and a filling device according to any one of claims 1-9;

the liquid storage tank (110) is communicated with the inlet end of the measuring cup (2) through a liquid inlet valve (120), a weighing sensor (130) is arranged at the bottom of the measuring cup (2), and the weighing sensor (130) can feed back and adjust the opening and closing states of the liquid inlet valve (120) and the control valve (1).

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