CN219257873U

CN219257873U - Double-speed filling valve

Info

Publication number: CN219257873U
Application number: CN202221017742.1U
Authority: CN
Inventors: 兰小静; 姚治高
Original assignee: Luzhou Hesen Intelligent Equipment Co ltd
Current assignee: Luzhou Hesen Intelligent Equipment Co ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2023-06-27
Anticipated expiration: 2032-04-28

Abstract

The utility model provides a double-speed filling valve, which comprises a filling valve body and a filling nozzle connected with the filling valve body, wherein the filling nozzle is provided with a sealing groove; the inner part of the filling valve body is provided with a liquid inlet channel which is conical, and the inner part of the filling valve body is also provided with a piston matched with the upper part of the liquid inlet channel; the filling valve body is provided with a cylinder stay bar, the cylinder stay bar is connected with a cylinder, the cylinder is connected with a controller, the filling valve body is also provided with a liquid inlet pipe, and the liquid inlet pipe is communicated with the liquid inlet channel; the bottom of the filling nozzle is provided with a filling opening which is communicated with the liquid inlet channel, and the filling opening is also provided with a filter screen. According to the utility model, the length of expansion and contraction of the air cylinder is controlled by the controller, so that the position of the piston in the liquid inlet channel of the filling valve body is controlled, the opening state of the piston is changed, and the speed change of the filling flow of the filling valve is realized, so that the filling valve can simultaneously consider the filling precision and the filling efficiency.

Description

Double-speed filling valve

Technical Field

The utility model relates to the technical field of liquid filling equipment, in particular to a double-speed filling valve.

Background

Filling equipment, mainly a product in a packaging machine, is widely applicable to medicines, foods, beverages, daily chemicals, grease, pesticides and other special industries. The packaging angle of materials can be divided into a liquid filling machine, a paste filling machine, a powder filling machine and a particle filling machine, and the packaging angle of materials can be divided into a semi-automatic filling machine and a full-automatic filling production line from the aspect of the automation degree of production; in terms of filling mode, the filling machine is divided into linear filling equipment; vertical liquid filling equipment and vacuum filling equipment.

The weighing type liquid quantitative filling machine adopts a high-precision electronic weighing technology and combines an automatic filling technology, so that high-precision dynamic metering filling of liquid media is realized, the metering accuracy is not influenced by factors such as pressure, temperature, bubbles and the like, the weighing type liquid quantitative filling machine is simple to install and debug, and is convenient to use and maintain, and the weighing type liquid quantitative filling machine can be applied to quantitative filling of industries such as edible oil, lubricating oil, wine, beverage, building materials, chemical industry and the like.

In liquid filling plants, the filling valve is one of the core components. The filling process of the weighing type liquid filling machine comprises the following steps: and measuring the weight of the container, starting filling by the filling valve, and closing the filling valve after the target filling weight is reached. In the prior art, the reading distortion of the weighing unit is larger due to the impact of the liquid flowing out of the weighing unit in the filling process, so that larger error of the final filling result is caused; if the flow rate of the filling valve is reduced, the impact can be greatly reduced to improve the accuracy of the filling result, but the time of the whole filling process can be increased, and the efficiency is greatly reduced. Therefore, the weighing type liquid filling machine has the problem that the filling efficiency can not be ensured while the filling result is accurate.

Disclosure of Invention

The utility model aims to provide a double-speed filling valve which is used for solving the technical problem that a weighing type liquid filling machine in the prior art cannot guarantee the accuracy of a filling result and simultaneously guarantee the filling efficiency.

To achieve the above object, in one embodiment of the present utility model, a two-speed filling valve is provided, comprising a filling valve body and a filling nozzle connected to the filling valve body;

the inner part of the filling valve body is provided with a liquid inlet channel which is conical, and the inner part of the filling valve body is also provided with a piston matched with the upper part of the liquid inlet channel;

the filling valve body is provided with a cylinder stay bar, the cylinder stay bar is connected with a cylinder, the cylinder is connected with a controller, the filling valve body is also provided with a liquid inlet pipe, and the liquid inlet pipe is communicated with the liquid inlet channel;

the bottom of the filling nozzle is provided with a filling opening which is communicated with the liquid inlet channel, and the filling opening is also provided with a filter screen.

In order to solve the problem of water leakage of the filling valve caused by poor air tightness of connection of the filling valve body and the filling nozzle, a filling nozzle sealing ring is preferably arranged between the filling valve body and the filling nozzle.

Preferably, the piston is sleeved with a return spring and a piston sealing ring.

Preferably, the piston is further sleeved with a piston rod guide sleeve, and the piston rod guide sleeve is positioned below the reset spring.

Preferably, an O-shaped ring is arranged between the piston rod guide sleeve and the piston.

Preferably, a spring seat is arranged above the reset spring, a nut is arranged on the spring seat, the nut is connected with a bolt, and one end of the bolt is connected with the piston.

Preferably, the cylinder is fixedly connected with the cylinder stay rod through a bolt.

In summary, the beneficial effects of the utility model are as follows:

1. according to the utility model, the length of expansion and contraction of the air cylinder is controlled by the controller, so that the position of the piston in the liquid inlet channel of the filling valve body is controlled, the opening state of the piston is changed, and the speed change of the filling flow of the filling valve is realized, so that the filling valve can simultaneously consider the filling precision and the filling efficiency.

2. A filling nozzle sealing ring is arranged between a filling valve body and a filling nozzle. The sealing ring is arranged for ensuring the air tightness between the filling valve body and the filling nozzle, so that the water leakage of the filling valve caused by poor air tightness between the filling valve body and the filling nozzle is avoided.

3. The piston of the utility model is sleeved with a return spring, the bottom of the filling nozzle is provided with a filling opening which is communicated with the liquid inlet channel, and the filling opening is also provided with a filter screen. The cylinder makes piston and feed liquor passageway be in the cooperation state through reset spring's effect, and the inside liquid of filling valve body and filling mouth prevents outside air to get into the cavity under filter screen and liquid surface tension's effect this moment, and inside liquid no longer flows.

4. A spring seat is arranged above the reset spring, a nut is arranged on the spring seat, the nut is connected with a bolt, and one end of the bolt is connected with a piston. According to the utility model, the gap between the bolt and the cylinder can be adjusted by adjusting the bolt connected with the piston, so that the filling speed difference of the filling valve is larger, and more filling requirements can be met.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is an exploded view of one embodiment of the present utility model;

FIG. 3 is a state diagram of full speed filling of a filling valve in one embodiment of the utility model;

FIG. 4 is a state diagram of slow filling of a filling valve in one embodiment of the utility model;

fig. 5 is a state diagram of stopping filling of the filling valve in one embodiment of the present utility model.

The device comprises a 1-filling valve body, a 2-filling nozzle, a 3-liquid inlet channel, a 4-piston, a 5-cylinder stay bar, a 6-cylinder, a 7-liquid inlet pipe, an 8-filling port, a 9-filter screen, a 10-filling nozzle sealing ring, an 11-return spring, a 12-piston rod guide sleeve, a 13-O-shaped ring, a 14-spring seat, a 15-nut, a 16-bolt and a 17-piston sealing ring.

Detailed Description

The utility model provides a double-speed filling valve, which comprises a filling valve body 1 and a filling nozzle 2 connected with the filling valve body 1, wherein the filling valve body 1 is communicated with the filling nozzle 2. A filling nozzle sealing ring 10 is arranged between the filling valve body 1 and the filling nozzle 2, and is used for ensuring the air tightness between the filling valve body 1 and the filling nozzle 2, so that the water leakage of the filling valve caused by poor air tightness between the filling valve body 1 and the filling nozzle 2 is avoided.

The filling valve body 1 is provided with a cylinder stay bar 5, the cylinder stay bar 5 is connected with a cylinder 6, the cylinder 6 is fixedly connected with the cylinder stay bar 5 through a bolt 16, the cylinder 6 is also connected with a controller, and the cylinder 6 is a double-stroke cylinder. The controller controls the length of the expansion and contraction of the air cylinder 6, and further controls the position of a liquid inlet channel 3 of a piston 4 in the filling valve body 1, so that the opening state of the piston 4 is changed.

The inside of the filling valve body 1 is provided with a liquid inlet channel 3, and the liquid inlet channel 3 is conical. The purpose of the tapering of the inlet channel 3 is that a subsequent change in the filling valve flow rate can be achieved by changing the position of the piston 4 described below. The interior of the filling valve body 1 is also provided with a piston 4 matched with the upper part of the liquid inlet channel 3, and when the piston 4 is in a state matched with the upper part of the liquid inlet channel 3, the liquid inlet channel 3 is in a sealing state.

The piston 4 is sleeved with a return spring 11 and a piston sealing ring 17, the return spring 11 is used for resetting the cylinder 6, and the piston sealing ring 17 is used for enhancing the sealing performance of the piston 4. The piston 4 is also sleeved with a piston rod guide sleeve 12, and the piston rod guide sleeve 12 is positioned below the return spring 11. An O-shaped ring 13 is arranged between the piston rod guide sleeve 12 and the piston 4, the O-shaped ring 13 plays a role in sealing and concentric positioning, the piston rod guide sleeve is made of polytetrafluoroethylene, the piston rod guide sleeve reaches food-grade standards, and the piston 4 has certain self-lubricating property when in reciprocating motion, so that the friction coefficient can be reduced.

A spring seat 14 is arranged above the return spring 11, and the spring seat 14 plays a role in shock absorption. The spring seat 14 is provided with a nut 15, the nut 15 is connected with a bolt 16, one end of the bolt 16 is connected with the piston 4, and the bolt 16 is a hexagon bolt. The gap between the bolt 16 and the cylinder 6 can be kept, and the gap between the bolt 16 and the cylinder 6 can be adjusted by adjusting the bolt 16 connected with the piston 4, so that the filling speed difference of the filling valve is larger, and the filling valve is suitable for more filling requirements. When the controller controls the air cylinder 6 to stretch and retract, the air cylinder 6 pushes the piston 4 to move by pushing the bolt 16, so that the opening state of the piston 4 is changed.

The filling valve body 1 is also provided with a liquid inlet pipe 7, and the liquid inlet pipe 7 is communicated with the liquid inlet channel 3. The filling liquid enters the liquid inlet channel 3 through the liquid inlet pipe 7, and then enters the filling container through a filling opening 8 on the filling nozzle 2.

The bottom of the filling nozzle 2 is provided with a filling opening 8, the filling opening 8 is communicated with the liquid inlet channel 3, and a filter screen 9 is further arranged on the filling opening 8. The filter screen 9 is used for converging the flowing-out filling liquid, so that the flowing-out liquid is soft, the impact effect of the filling liquid is reduced, and the accuracy of the filling result is further improved. When the return spring 11 returns the cylinder 6, the piston 4 seals the liquid inlet channel 3, and liquid in the filling valve body 1 and the filling nozzle 2 is prevented from entering the cavity by the external air under the action of the tension of the filter screen 9 and the surface of the liquid, so that the liquid in the cavity is not discharged.

Working principle and process: the controller controls the position of the piston 4 in the liquid inlet channel 3 of the filling valve body 1 by controlling the telescopic length of the cylinder 6, so that the opening state of the piston 4 is changed, the speed change of the filling flow of the filling valve is realized, and the filling valve can simultaneously consider the filling precision and the filling efficiency. When the cylinder 6 is in a long stroke, the piston 4 is in a fully opened state, and the filling valve is used for quick filling; when the cylinder 6 is in a short stroke, the piston 4 is in a slightly opened state, and the filling valve is used for filling at a low speed.

The filling process is as follows: firstly, measuring the weight of a container, then executing long-stroke quick filling by an air cylinder 6 on a filling valve under the control of a controller, executing short-stroke quick filling by the air cylinder 6 after the weight reaches a set quick filling amount, and resetting the air cylinder 6 after the weight reaches a target filling amount to finish filling.

Although specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, it should not be construed as limiting the scope of protection of the present patent. Various modifications and variations which may be made by those skilled in the art without the creative effort are within the scope of the patent described in the claims.

Claims

1. A two-speed filling valve, characterized by: comprises a filling valve body and a filling nozzle connected with the filling valve body;

the filling valve body is internally provided with a liquid inlet channel which is conical, and the filling valve body is internally provided with a piston matched with the upper part of the liquid inlet channel;

2. A two-speed filling valve as defined in claim 1 wherein: and a filling nozzle sealing ring is arranged between the filling valve body and the filling nozzle.

3. A two-speed filling valve as defined in claim 1 wherein: and the piston is sleeved with a reset spring and a piston sealing ring.

4. A two-speed filling valve as defined in claim 3, wherein: the piston is also sleeved with a piston rod guide sleeve, and the piston rod guide sleeve is positioned below the reset spring.

5. A two-speed filling valve as defined in claim 4 wherein: an O-shaped ring is arranged between the piston rod guide sleeve and the piston.

6. A two-speed filling valve as defined in claim 3, wherein: the spring seat is arranged above the reset spring, a nut is arranged on the spring seat, the nut is connected with a bolt, and one end of the bolt is connected with the piston.

7. A two-speed filling valve as defined in claim 1 wherein: the cylinder is fixedly connected with the cylinder stay bar through a bolt.