Search

CN-224198730-U - Pneumatic control box for pneumatic feeding machine

CN224198730UCN 224198730 UCN224198730 UCN 224198730UCN-224198730-U

Abstract

The utility model discloses a pneumatic control box for a pneumatic feeder, which comprises a high-pressure air source, and a mechanical opening valve, a mechanical stopping valve, a material sucking circulation pneumatic control valve assembly and a material sucking circulation pneumatic control switching valve which are all connected with the high-pressure air source, wherein the material sucking circulation pneumatic control valve assembly comprises a material sucking pneumatic control valve group and a material discharging pneumatic control valve group, the material sucking pneumatic control valve group comprises a bottom valve opening and closing valve, a vacuum valve opening valve and a material sucking and discharging switching valve, the mechanical opening valve can enable the bottom valve to be closed, a vacuum generator is started to start material sucking, the material discharging pneumatic control valve group comprises a pulse valve opening valve, a flow aid opening valve and a material discharging switching valve, and the mechanical stopping valve can trigger the material sucking circulation pneumatic control switching valve to switch from an opening position PA to a closing position AR to stop material sucking. According to the utility model, the mechanical opening valve is adopted to realize the circulation control of the suction and the discharge by one key, and the mechanical stopping valve is adopted to jump out of the circulation control of the suction and the discharge by one key, so that the whole process does not need electricity, the operation is simple and quick, and the use safety in an explosion-proof environment is greatly improved.

Inventors

  • Tian Ruizhan
  • ZOU DI

Assignees

  • 上海孚遐技术有限公司

Dates

Publication Date
20260505
Application Date
20250616

Claims (10)

  1. 1. The pneumatic control box for the pneumatic feeder is characterized by comprising a high-pressure air source, and a mechanical opening valve, a mechanical stop valve, a material sucking circulation pneumatic control valve assembly and a material sucking circulation pneumatic control switching valve which are all connected with the high-pressure air source; The material sucking circulation pneumatic control valve assembly comprises a material sucking pneumatic control valve group and a material discharging pneumatic control valve group; the material sucking pneumatic control valve group comprises a bottom valve opening and closing valve, a vacuum valve opening valve and a material sucking and discharging switching valve; The bottom valve opening and closing valve is provided with a closing position PA and an opening position PB which are respectively used for controlling the closing and opening of the bottom valve; the vacuum valve opening valve and the suction circulation pneumatic control switching valve are provided with an opening position PA and a closing position AR communicated with the atmosphere; the suction and discharge switching valve is a pneumatic control delay valve and is provided with an opening position PB and a delay closing position PA, wherein the delay closing position PA of the suction and discharge switching valve can delay to open the opening position PB of the base valve opening and closing valve; The mechanical opening valve can enable the opening and closing valve of the bottom valve to be in a closing position PA, and simultaneously enable the pneumatic control switching valve of the suction circulation to be in an opening position PA; When the suction circulation pneumatic control switching valve is positioned at the opening position PA, the opening position PA of the vacuum valve opening valve and the opening position PB of the suction and discharge switching valve are sequentially communicated; The discharging pneumatic control valve group comprises a pulse valve opening valve, a flow aid opening valve and a discharging switching valve; The pulse valve opening valve and the auxiliary flow device opening valve are respectively provided with an opening position PA communicated with the opening position PB of the bottom valve opening and closing valve, wherein the opening position PA of the pulse valve opening valve is used for controlling the opening of the pulse valve; the mechanical stop valve can trigger the suction cycle pneumatic control switching valve to switch from the open position PA to the closed position AR.
  2. 2. The pneumatic control box for the pneumatic feeder of claim 1, wherein the mechanical opening valve and the mechanical stopping valve are two-position three-way mechanical valves, each mechanical valve is provided with a trigger button, an opening position PA and a closing position AR, wherein the touch buttons are used for triggering the respective opening positions PA, and the closing positions AR are communicated with the atmosphere.
  3. 3. The pneumatic control box for the pneumatic feeder according to claim 1 or 2 is characterized in that the bottom valve opening and closing valve is a two-position five-way double pneumatic control valve, and is provided with a first pneumatic control interface adjacent to an A port of the bottom valve opening and closing valve and a second pneumatic control interface adjacent to a B port of the bottom valve opening and closing valve, wherein the first pneumatic control interface is connected with the A port of the mechanical opening valve, and the second pneumatic control interface is connected with the A port of the suction and discharge switching valve.
  4. 4. The pneumatic control box for the pneumatic feeder of claim 3, wherein a one-way valve is arranged on a connecting gas path of the opening A of the mechanical opening valve and the pneumatic control interface I of the base valve opening and closing valve, so that gas can only flow unidirectionally from the opening A of the mechanical opening valve to the pneumatic control interface I of the base valve opening and closing valve.
  5. 5. The pneumatic control box for the pneumatic feeder of claim 3, wherein a throttle valve is further arranged on a connecting gas path of the opening A of the mechanical opening valve and the pneumatic control interface I of the opening and closing valve of the bottom valve.
  6. 6. The pneumatic control box for the pneumatic feeder is characterized in that the vacuum valve opening valve is a two-position three-way single pneumatic control valve, the material sucking circulation pneumatic control switching valve is a two-position three-way double pneumatic control valve, and is provided with a pneumatic control interface III adjacent to an A port of the pneumatic control switching valve and a pneumatic control interface IV deviating from the A port of the pneumatic control switching valve, wherein the pneumatic control interface III is connected with the A port of the mechanical opening valve, and the pneumatic control interface IV is connected with the A port of the mechanical stopping valve.
  7. 7. The pneumatic control box for the pneumatic feeding machine is characterized in that the suction and discharge switching valve is a two-position five-way single pneumatic control delay valve, a pneumatic control interface of the suction and discharge switching valve is connected with an A port of a suction and discharge circulating pneumatic control switching valve, the delay closing position PA of the suction and discharge switching valve is delayed to be conducted after the suction and discharge delay time is set, and a P port of the suction and discharge switching valve is connected with an A port of a vacuum valve opening valve.
  8. 8. The pneumatic control box for the pneumatic feeder is characterized in that the pulse valve opening valve is a two-position three-way single pneumatic control valve, a pneumatic control interface of the pulse valve opening valve is connected with a port B of the bottom valve opening and closing valve, a port A of the pulse valve opening valve is connected with an opening execution port of the pulse valve, and a port P of the pulse valve opening valve is connected with a high-pressure air source.
  9. 9. The pneumatic control box for the pneumatic feeder of claim 3, wherein the flow aid opening valve is a two-position three-way single pneumatic control valve, a pneumatic control interface of the flow aid opening valve is connected with a port B of the bottom valve opening and closing valve, a port A of the flow aid opening valve is connected with the flow aid, and a port P of the flow aid opening valve is connected with a high-pressure air source.
  10. 10. The pneumatic control box for the pneumatic feeder is characterized in that the discharging and sucking switching valve is a two-position two-way single-pneumatic control delay valve, a pneumatic control interface of the discharging and sucking switching valve is connected with a port B of a base valve opening and closing valve, a port A of the discharging and sucking switching valve is connected with a pneumatic control interface I of a base valve pneumatic valve, and a port P of the discharging and sucking switching valve is connected with a high-pressure air source.

Description

Pneumatic control box for pneumatic feeding machine Technical Field The utility model relates to a pneumatic control box for powder hopper butt joint equipment, in particular to a pneumatic control box for a pneumatic feeding machine. Background The pneumatic feeder is a device for generating vacuum through Venturi effect to suck the mixture of materials and air into a storage cavity of the pneumatic feeder. As shown in fig. 2, the pneumatic loader 20 includes a loader body 21, a suction pipe 22, a filter assembly, a vacuum adsorption assembly, and a discharge assembly. The feeder body has a storage cavity 211, and the suction pipeline 22 is arranged at one side of the storage cavity. The filter assembly comprises a filter material 23 and a pulse valve 231, wherein the filter material is arranged in a storage cavity above a suction pipeline, the top of the filter material is externally connected with a high-pressure air source through an air blowing pipeline, and the pulse valve is arranged on the air blowing pipeline and can perform pulse air blowing on the filter material from top to bottom. The vacuum adsorption assembly comprises a vacuum generator 24 and a vacuum valve 241, wherein the vacuum generator is arranged at the top of the storage cavity, and the air inlet end of the vacuum generator is connected with a high-pressure air source through the vacuum valve. The discharging assembly comprises a bottom valve 25 and a flow aid 26, wherein the bottom valve is arranged at the bottom of the storage cavity, and the flow aid is arranged on the outer side wall of the bottom of the feeding machine body above the bottom valve. The storage cavity below the filter material is also called an aggregate cavity, has small volume, is convenient for continuously and stably feeding, and avoids feeding fluctuation. Because the volume of the aggregate cavity is small, the cyclic material sucking and discharging actions are needed during feeding, and then the powder material with stable material level in the aggregate cavity is maintained. 1. The material sucking process comprises the following steps: 1A, the bottom valve, the flow aid and the pulse valve are all in a closed state. 1B, the vacuum valve is opened, and the vacuum generator is started, so that the storage cavity is in a vacuum negative pressure state. And 1C, enabling the powder to enter the storage cavity through the material suction pipeline, so as to realize material suction. 2. When the suction is to be carried out for a set time length, starting the discharging process, specifically: 2A, closing the vacuum valve, stopping the vacuum generator, releasing the negative pressure in the storage cavity, and stopping the material suction of the material suction pipeline. 2B, a bottom valve, a flow aid and a pulse valve are simultaneously opened, wherein powder in the material storage cavity enters a material using point through the bottom valve, the flow aid shakes the bottom of the material loading machine body to assist the material storage cavity to discharge materials, the pulse valve provides downward pulse back-blowing air flow for the top of the filter material, and the pulse valve can assist the material discharge while enabling the powder adhered on the filter material to fall into the material storage cavity below. 3. And when the discharging reaches the set time length, starting a new round of material sucking, so that the material sucking and discharging circulation is performed until the feeding is finished. At present, the opening sequence and the duration of the bottom valve, the flow aid, the pulse valve and the vacuum valve are controlled by adopting a PLC system, so that the construction of a plurality of cables can be involved, sometimes the power supply distance is far, the cost can be increased, equipment is used in an explosion-proof area, in order to avoid explosion risks, partial customers can hope that the field control system does not involve electricity, and therefore, the use requirements of the customers can not be met by the existing pneumatic control box. Disclosure of utility model The utility model aims to solve the technical problems of the prior art, and provides the pneumatic control box for the pneumatic feeding machine, which can be used in an explosion-proof environment without circuit control, realizes the circulation control of sucking and discharging by mechanically opening a valve and a key, can jump out of the circulation control of sucking and discharging by a mechanical stop valve, does not need electricity in the whole process, is simple and quick to operate, and greatly improves the use safety in the explosion-proof environment. In order to solve the technical problems, the utility model adopts the following technical scheme: The pneumatic control box for the pneumatic feeder comprises a high-pressure air source, and a mechanical opening valve, a mechanical stopping valve, a material sucking circulation pneumat