CN214422233U

CN214422233U - Positive displacement filling mechanism

Info

Publication number: CN214422233U
Application number: CN202023199704.6U
Authority: CN
Inventors: 毛志军; 倪峰
Original assignee: Changzhou Terry Packing Sci Tech Co ltd
Current assignee: Changzhou Terry Packing Sci Tech Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-10-19
Anticipated expiration: 2030-12-25

Abstract

The utility model relates to the technical field of filling mechanisms, in particular to a positive displacement filling mechanism, which comprises a material box, a first valve, a central pipe, a piston rod, a piston cylinder, a filling pipeline, a second valve, a blanking nozzle and a linear adjusting mechanism; a sliding hole matched with the central pipe penetrates through the piston rod, a piston is fixed at the bottom end of the piston rod, a storage cavity communicated with the bottom end of the central pipe is formed between the end cover and the piston, an inlet of the filling pipeline is communicated with the storage cavity, an outlet of the filling pipeline is communicated with an inlet of the second valve, and an outlet of the second valve is communicated with the blanking nozzle; the sharp adjustment mechanism is used for adjusting the piston rod and rises or descends, the utility model discloses utilize and store the chamber and can advance quantitative storage well treat the liquid of filling to this ensures that the filling volume is invariable, utilizes sharp adjustment mechanism to drive the piston rod simultaneously and rise or descend together with the piston, can change the capacity of storing the chamber, thereby can be according to the nimble adjustment filling volume of actual demand, and simple structure, with low costs.

Description

Positive displacement filling mechanism

Technical Field

The utility model belongs to the technical field of filling mechanism technique and specifically relates to a positive displacement filling mechanism.

Background

In the industries of daily chemicals, food, medicine and the like, a filling mechanism is mainly used for filling liquid into a packaging bottle, the filling amount is calculated by the filling mechanism and the flow rate and time during filling at present, however, the density of the liquid fluctuates along with the change of temperature and pressure, so that the filling amount fluctuates along with the fluctuation of the density, and the filling amount is inaccurate.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problem that the filling quantity is inaccurate because the filling quantity is calculated by the flow and time when the filling mechanism adopts filling in the prior art, the invention provides a positive displacement filling mechanism.

The utility model provides a technical scheme that its technical problem adopted is: a positive displacement filling mechanism comprises a material box, a first valve, a central pipe, a piston rod, a piston cylinder, a filling pipeline, a second valve, a blanking nozzle and a linear adjusting mechanism;

a sliding hole matched with the central pipe penetrates through the piston rod, the bottom end of the central pipe is slidably mounted in the sliding hole, the top end of the central pipe is communicated with a discharge hole of the first valve, a feed inlet of the first valve is communicated with the interior of the material box, a piston is fixed at the bottom end of the piston rod and is slidably mounted in a piston cylinder, an end cover is fixed at the bottom end of the piston cylinder and is fixed on the base, a storage cavity communicated with the bottom end of the central pipe is formed between the end cover and the piston, an inlet of the filling pipeline is communicated with the storage cavity, an outlet of the filling pipeline is communicated with an inlet of the second valve, and an outlet of the second valve is communicated with the blanking nozzle;

the linear adjusting mechanism is used for adjusting the piston rod to ascend or descend.

Utilize in this scheme to store the chamber and can store the liquid of treating the filling in advance quantitatively to this guarantees that the filling volume is invariable, utilizes sharp adjustment mechanism to drive the piston rod simultaneously and rises or descend together with the piston, can change the capacity of storing the chamber, thereby can be according to the nimble adjustment filling volume of actual demand.

Further, the linear adjusting mechanism comprises a screw rod, a guide rod, a nut and a movable plate, the screw rod is rotatably installed on the base and is axially fixed relative to the base, the nut is in threaded transmission connection with the screw rod, the movable plate is fixedly connected with the nut, the piston rod is fixedly connected with the movable plate, the axis of the guide rod is parallel to the axis of the screw rod, the guide rod is fixed on the base, and the movable plate is in sliding connection with the guide rod; through rotating the screw rod, the nut is driven by the screw thread of the screw rod to move along the axis direction of the screw rod, so that the movable plate drives the piston rod to ascend or descend.

Furthermore, a fixing plate is fixed at the top end of the guide rod, the top end of the screw rod is rotatably installed on the fixing plate, and the fixing plate is fixedly connected with the central tube; through the setting of fixed plate, can form both ends to the lead screw and support, prevent that the lead screw from taking place the skew, ensure the degree of accuracy that the lead screw was adjusted.

Furthermore, a guide sleeve is fixed on the movable plate, and the guide sleeve is sleeved outside the guide rod and is connected with the guide rod in a sliding manner; by means of the arrangement of the guide sleeve, the friction resistance between the movable plate and the guide rod can be reduced, and the movable plate can move conveniently during adjustment.

Furthermore, a hand wheel is fixed at the end part of the bottom end of the screw rod; the hand wheel can provide an acting point to realize that the lead screw is driven to rotate manually.

Further, be fixed with the connector on the end cover, connector and filling pipeline fixed connection, the passageway has in the connector, the import and the storage chamber intercommunication of passageway, the export and the filling pipeline intercommunication of passageway.

Furthermore, the central tube, the piston rod and the piston cylinder are all made of glass fiber reinforced plastics; the strength of the structure can be improved.

Further, the first valve is a three-way valve, and an air inlet capable of being communicated with the discharge hole is formed in the first valve.

Further, the second valve is a solenoid valve.

The utility model has the advantages that: the utility model discloses positive displacement filling mechanism utilizes and stores the chamber and can advance quantitative storage well treat the liquid of filling to this ensures that the filling volume is invariable, utilizes sharp adjustment mechanism to drive the piston rod simultaneously and rise or descend together with the piston, can change the capacity of storing the chamber, thereby can be according to the nimble adjustment filling volume of actual demand, and simple structure, with low costs.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic view of the positive displacement filling mechanism of the present invention;

fig. 2 is a schematic cross-sectional view of the positive displacement filling mechanism of the present invention.

In the figure: 1. the device comprises a material box, 2, a first valve, 3, a central pipe, 4, a piston rod, 401, a slide hole, 5, a piston cylinder, 6, a filling pipeline, 7, a second valve, 8, a discharging nozzle, 9, a piston, 10, an end cover, 11, a base, 12, a storage cavity, 13, a screw rod, 14, a guide rod, 15, a nut, 16, a movable plate, 17, a fixed plate, 18, a guide sleeve, 19, a hand wheel, 20, a connector, 2001 and a channel.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the invention only in a schematic way, and thus show only the components that are relevant to the invention, and the directions and references (e.g., upper, lower, left, right, etc.) may be used only to help describe the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

Example 1

As shown in fig. 1-2, a positive displacement filling mechanism comprises a material box 1, a first valve 2, a central tube 3, a piston rod 4, a piston cylinder 5, a filling pipeline 6, a second valve 7, a discharging nozzle 8 and a linear adjusting mechanism;

a sliding hole 401 matched with the central tube 3 penetrates through the piston rod 4, the bottom end of the central tube 3 is slidably mounted in the sliding hole 401, the top end of the central tube 3 is communicated with a discharge hole of the first valve 2, a feed inlet of the first valve 2 is communicated with the interior of the material box 1, a piston 9 is fixed at the bottom end of the piston rod 4, the piston 9 is slidably mounted in the piston cylinder 5, an end cover 10 is fixed at the bottom end of the piston cylinder 5, the end cover 10 is fixed on the base 11, a storage cavity 12 communicated with the bottom end of the central tube 3 is formed between the end cover 10 and the piston 9, an inlet of the filling pipeline 6 is communicated with the storage cavity 12, an outlet of the filling pipeline 6 is communicated with an inlet of the second valve 7, and an outlet of the second valve 7 is communicated with the blanking nozzle 8;

the linear adjusting mechanism is used for adjusting the piston rod 4 to ascend or descend.

The linear adjusting mechanism comprises a screw rod 13, a guide rod 14, a nut 15 and a movable plate 16, the screw rod 13 is rotatably mounted on the base 11 and is axially fixed relative to the base 11, the nut 15 is in threaded transmission connection with the screw rod 13, the movable plate 16 is fixedly connected with the nut 15, the piston rod 4 is fixedly connected with the movable plate 16, the axis of the guide rod 14 is parallel to the axis of the screw rod 13, the guide rod 14 is fixed on the base 11, and the movable plate 16 is in sliding connection with the guide rod 14; by rotating the screw rod 13, the nut 15 is displaced along the axial direction of the screw rod 13 under the thread transmission of the screw rod 13, so that the movable plate 16 drives the piston rod 4 to ascend or descend.

A fixing plate 17 is fixed at the top end of the guide rod 14, the top end of the screw rod 13 is rotatably installed on the fixing plate 17, and the fixing plate 17 is fixedly connected with the central tube 3; through the setting of fixed plate 17, can form both ends to lead screw 13 and support, prevent that lead screw 13 from taking place the skew, ensure the degree of accuracy that lead screw 13 adjusted.

A guide sleeve 18 is fixed on the movable plate 16, and the guide sleeve 18 is sleeved outside the guide rod 14 and is connected with the guide rod 14 in a sliding manner; with the arrangement of the guide sleeve 18, the frictional resistance between the movable plate 16 and the guide bar 14 can be reduced, facilitating the movement of the movable plate 16 during adjustment.

A hand wheel 19 is fixed at the bottom end of the screw rod 13; the handwheel 19 can provide an acting point to realize the manual rotation of the screw rod 13.

The end cover 10 is fixed with a connector 20, the connector 20 is fixedly connected with the filling pipeline 6, a channel 2001 is arranged in the connector 20, an inlet of the channel 2001 is communicated with the storage cavity 12, and an outlet of the channel 2001 is communicated with the filling pipeline 6.

The central tube 3, the piston rod 4 and the piston cylinder 5 are all made of glass fiber reinforced plastics; the strength of the structure can be improved.

The first valve 2 is a three-way valve, and an air inlet which can be communicated with the discharge hole is formed in the first valve 2.

The working principle of the embodiment is as follows:

according to the amount of the filling liquid to be filled in the bottle body, the adjusting screw rod 13 drives the piston rod 4 and the piston 9 to displace, so that the capacity of the storage cavity 12 is changed to the position between the discharge port of the first valve 2 and the inlet of the second valve 7 when the filling liquid is filled in the position between the discharge port of the first valve 2 and the inlet of the second valve 7, the filling liquid pre-stored in the position between the discharge port of the first valve 2 and the inlet of the second valve 7 at the moment is equal to the amount of the filling liquid to be filled in the bottle body, therefore, the filling amount is ensured to be constant, the filling liquid can be pre-stored in advance in the moving process of the bottle body, and the waiting time of filling is shortened.

After the amount of the filling liquid to be filled is set, the second valve 7 is closed, the first valve 2 is switched to a feed port and communicated with a discharge port, an air inlet is isolated from the discharge port, at the moment, the liquid in the material box 1 reaches the central pipe 3 through the discharge port of the first valve 2, flows into the storage cavity 12 from the central pipe 3, then flows into the channel 2001 of the connector 20, and finally reaches the filling pipeline 6 until the liquid fills the part between the discharge port of the first valve 2 and the inlet of the second valve 7;

when the second valve 7 is opened, the filling liquid falls down from the blanking nozzle 8 under the action of the dead weight of the filling liquid and enters the bottle body, so that quantitative filling is realized; when first valve 2 is the three-way valve, open second valve 7, first valve 2 switches to the feed inlet and is isolated with the discharge gate, and air inlet and discharge gate intercommunication, air inlet department let in gas, and filling liquid falls down from unloading mouth 8 under its dead weight and gaseous effect fast, gets into in the bottle, realizes quantitative filling, utilizes gaseous promotion, can reduce the wall sticking phenomenon of liquid, can improve filling efficiency simultaneously.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A positive displacement filling mechanism which characterized in that: the automatic feeding device comprises a material box (1), a first valve (2), a central pipe (3), a piston rod (4), a piston cylinder (5), a filling pipeline (6), a second valve (7), a discharging nozzle (8) and a linear adjusting mechanism;

the automatic filling machine is characterized in that a sliding hole (401) matched with the central pipe (3) penetrates through the piston rod (4), the bottom end of the central pipe (3) is slidably mounted in the sliding hole (401), the top end of the central pipe (3) is communicated with a discharge hole of the first valve (2), a feed inlet of the first valve (2) is communicated with the inside of the material box (1), a piston (9) is fixed at the bottom end of the piston rod (4), the piston (9) is slidably mounted in the piston cylinder (5), an end cover (10) is fixed at the bottom end of the piston cylinder (5), the end cover (10) is fixed on the base (11), a storage cavity (12) communicated with the bottom end of the central pipe (3) is formed between the end cover (10) and the piston (9), an inlet of the filling pipeline (6) is communicated with the storage cavity (12), and an outlet of the filling pipeline (6) is communicated with an inlet of the second valve (7), the outlet of the second valve (7) is communicated with the blanking nozzle (8);

the linear adjusting mechanism is used for adjusting the piston rod (4) to ascend or descend.

2. A volumetric filling mechanism according to claim 1, wherein: the linear adjusting mechanism comprises a screw rod (13), a guide rod (14), a nut (15) and a movable plate (16), the screw rod (13) is rotatably installed on the base (11) and is axially fixed relative to the base (11), the nut (15) is in threaded transmission connection with the screw rod (13), the movable plate (16) is fixedly connected with the nut (15), the piston rod (4) is fixedly connected with the movable plate (16), the axis of the guide rod (14) is parallel to the axis of the screw rod (13), the guide rod (14) is fixed on the base (11), and the movable plate (16) is in sliding connection with the guide rod (14).

3. A volumetric filling mechanism according to claim 2, wherein: the top end of the guide rod (14) is fixed with a fixing plate (17), the top end of the screw rod (13) is rotatably installed on the fixing plate (17), and the fixing plate (17) is fixedly connected with the central tube (3).

4. A volumetric filling mechanism according to claim 2, wherein: a guide sleeve (18) is fixed on the movable plate (16), and the guide sleeve (18) is sleeved outside the guide rod (14) and is in sliding connection with the guide rod (14).

5. A volumetric filling mechanism according to claim 2, wherein: and a hand wheel (19) is fixed at the end part of the bottom end of the screw rod (13).

6. A volumetric filling mechanism according to claim 2, wherein: be fixed with connector (20) on end cover (10), connector (20) and filling pipeline (6) fixed connection, have passageway (2001) in connector (20), the import and the storage chamber (12) intercommunication of passageway (2001), the export and the filling pipeline (6) intercommunication of passageway (2001).

7. A volumetric filling mechanism according to claim 1, wherein: the central tube (3), the piston rod (4) and the piston cylinder (5) are all made of glass fiber reinforced plastics.

8. A volumetric filling mechanism according to claim 1, wherein: first valve (2) are the three-way valve, have on first valve (2) can with the air inlet of discharge gate intercommunication.

9. A volumetric filling mechanism according to claim 1, wherein: the second valve (7) is an electromagnetic valve.