CN220998366U

CN220998366U - Pneumatic vacuum conveying equipment

Info

Publication number: CN220998366U
Application number: CN202322908095.4U
Authority: CN
Inventors: 李剑; 彭文明
Original assignee: Changsha Jitian Environmental Technology Co ltd
Current assignee: Changsha Jitian Environmental Technology Co ltd
Priority date: 2023-10-27
Filing date: 2023-10-27
Publication date: 2024-05-24
Anticipated expiration: 2033-10-27

Abstract

The utility model relates to pneumatic vacuum conveying equipment. The pneumatic vacuum feeding equipment comprises a pneumatic vacuum feeding machine, a vacuum generator, a pulse back-blowing device and a controller. The pneumatic vacuum feeding machine comprises a feeding barrel, a filter, a hopper and a discharging device. The reversing valve is provided with an extraction opening, a vacuum extraction opening and a bypass opening. The vacuum generator is used for forming vacuum negative pressure in the clean air cavity and the material sucking cavity. The pulse back blowing device is used for carrying out back blowing to the filter in the clean air cavity. The controller is used for controlling the discharging device to operate so as to close the bottom opening of the hopper, the vacuum generator to be opened and the pulse back blowing device to be closed simultaneously, and controlling the discharging device to operate so as to open the bottom opening of the hopper, the vacuum generator to be closed and the pulse back blowing device to be opened simultaneously. The pneumatic vacuum material conveying equipment can realize the cleaning work of the filter in the working process, ensures higher material conveying efficiency, and simultaneously ensures lower probability of dust pollution to surrounding environment and injury to operators.

Description

Pneumatic vacuum conveying equipment

Technical Field

The utility model relates to the technical field of vacuum feeding machines, in particular to pneumatic vacuum feeding equipment.

Background

The vacuum feeder is also called as vacuum conveyor, and is a dust-free closed pipeline conveying equipment for conveying particles and powdery materials by means of vacuum suction, and utilizes the air pressure difference between vacuum and environment space to form gas flow in the pipeline so as to drive the powdery materials to move, thereby completing the conveying of powder.

But because the material and air need to be thoroughly separated by a filter during transport. The filter will be blocked after long-time use, so that the air permeability and the material conveying efficiency of the filter are guaranteed, the filter is required to be frequently detached for cleaning, the cleaning work is troublesome, the material conveying efficiency is also influenced, and dust easily flies into the surrounding environment in the detaching process, thereby influencing the surrounding environment and operators.

Disclosure of utility model

Based on the above, it is necessary to provide a pneumatic vacuum conveying device with higher material conveying efficiency and less dust pollution and damage.

A pneumatic vacuum conveying apparatus comprising:

The pneumatic vacuum feeding machine comprises a feeding barrel, a filter, a hopper and a discharging device; the filter and the hopper are sequentially arranged in the upper charging barrel from top to bottom so as to divide the space in the upper charging barrel into a clean air cavity, a material sucking cavity and a material discharging cavity; the discharging device is arranged at the bottom opening of the hopper and is configured to close or open the opening at the bottom of the hopper; the side wall of the feeding barrel is provided with an air suction port and a back-blowing port which are communicated with the air purifying cavity, a material suction port which is communicated with the material suction cavity and a material discharge port which is communicated with the material discharge cavity;

The vacuum generator is communicated with the air suction port and is used for forming vacuum negative pressure in the clean air cavity and the material suction cavity;

The pulse back-blowing device is communicated with the back-blowing port and is used for carrying out back-blowing on the filter in the clean air cavity;

And the controller is respectively and electrically connected with the discharging device, the vacuum generator and the pulse back-blowing device and is used for simultaneously controlling the discharging device to operate so as to close the bottom opening of the hopper, the vacuum generator to open and the pulse back-blowing device to close, and simultaneously controlling the discharging device to operate so as to open the bottom opening of the hopper, the vacuum generator to close and the pulse back-blowing device to open.

In one embodiment, a pressure relief opening communicated with the discharging cavity is formed on the side wall of the upper charging bucket; a pressure relief pipe is arranged at the pressure relief opening; the pneumatic vacuum conveying equipment further comprises a pressure relief cloth bag; the pressure relief cloth bag is wrapped at one end of the pressure relief pipe, which is far away from the pressure relief opening.

In one embodiment, the feeding barrel comprises a top cover, a filtering barrel body, a discharging barrel body and a butt flange; the filter barrel body, the discharging barrel body and the butt flange are hollow barrel structures with two open ends; two ends of the discharging barrel body are detachably connected with one end of the filtering barrel body and one end of the butt flange respectively; the top cover is detachably covered at one end of the filtering barrel body, which is away from the discharging barrel body; the filter is arranged in the filter barrel body, and the hopper is arranged in the discharge barrel body; the top cover is provided with the air suction port and the back blowing port; the side wall of the filter barrel body below the filter is provided with the material sucking opening; the bottom of the discharging barrel body is provided with the discharging opening.

In one embodiment, two ends of the discharging cylinder are detachably connected with one end of the filtering cylinder and one end of the butt flange respectively through quick-opening clamps.

In one embodiment, the discharging device comprises a discharging door, a rotary cylinder and a discharging valve; one end of the discharging door is rotatably arranged on the inner wall of the charging barrel or the edge part of the bottom opening of the hopper; the rotary cylinder is used for providing a driving force for driving the discharging door to rotate along the direction towards the hopper; the discharge valve is used for communicating the rotary cylinder with an external air source; the controller is electrically connected with the discharge valve.

In one embodiment, the device further comprises an embedded steel wire hose, a suction nozzle communicated with one end of the embedded steel wire hose and an air pipe communicated with the embedded steel wire hose; and one end of the steel wire hose, which is far away from the suction nozzle, is communicated with the suction opening.

In one embodiment, the embedded steel wire hose is respectively communicated with the suction nozzle and the air pipe through three-way connectors.

In one embodiment, the air pipe is provided with an on-off control valve.

The pneumatic vacuum conveying equipment is characterized in that the controller is used for controlling the operation of the discharging device, the opening and closing of the vacuum generator and the opening and closing of the pulse back-blowing device respectively when the pneumatic vacuum conveying equipment works, so that the vacuum generator is in a working state and the pulse back-blowing device is in a closing state when the discharging device seals the bottom opening of the hopper, and the vacuum generator is in a closing state and the pulse back-blowing device is in a working state when the discharging device opens the bottom opening of the hopper. So, above-mentioned pneumatic vacuum conveying equipment just can realize the clean work of filter in the course of the work, need not to shut down, also need not to dismantle, labour saving and time saving still can avoid the dust excessive, when guaranteeing that conveying efficiency is higher, still makes dust pollution surrounding environment and causes the probability of injury lower to operating personnel. Simultaneously, the pneumatic generator and the pulse back blowing device can be arranged on the pneumatic vacuum feeding machine, so that the occupied area of the pneumatic vacuum feeding equipment is greatly reduced.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

FIG. 1 is a schematic diagram of a pneumatic vacuum conveying apparatus in accordance with a preferred embodiment of the present utility model;

FIG. 2 is a schematic structural view of a pneumatic vacuum feeder in the pneumatic vacuum feeder apparatus shown in FIG. 1;

Fig. 3 is a cross-sectional view of the pneumatic vacuum feeder shown in fig. 2.

Reference numerals in the detailed description indicate: 100. pneumatic vacuum material conveying equipment; 110. pneumatic vacuum feeding machine; 111. feeding a charging barrel; 1111. a clean air cavity; 1112. a material suction cavity; 1113. a discharge cavity; 1114. a material suction port; 1115. a discharge port; 1116. a pressure relief port; 1117. a top cover; 1118. a filtering barrel body; 1119. a discharging barrel body; 1020. a butt flange; 1121. quick-opening clamp; 112. a filter; 113. a hopper; 114. a discharging device; 1141. a discharging door; 1142. a rotary cylinder; 115. a pressure relief tube; 116. a pressure relief cloth bag; 120. a vacuum generator; 130. a pulse back-blowing device; 140. a steel wire hose is embedded; 150. a suction nozzle; 160. an air pipe; 170. a three-way joint; 180. and switching the control valve.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

When an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present unless otherwise specified. It will also be understood that when an element is referred to as being "between" two elements, it can be the only one between the two elements or one or more intervening elements may also be present.

Where the terms "comprising," "having," and "including" are used herein, another component may also be added unless a specifically defined term is used, such as "consisting of only," "… …," etc. Unless mentioned to the contrary, singular terms may include plural and are not to be construed as being one in number.

Fig. 1 shows the structure of a pneumatic vacuum conveying apparatus in an embodiment of the present utility model. Fig. 2 and 3 show the structure of a pneumatic vacuum feeder according to an embodiment of the present utility model. For convenience of explanation, the drawings show only structures related to the embodiments of the present utility model.

Referring to fig. 1 to 3, a pneumatic vacuum loading apparatus 100 according to a preferred embodiment of the present utility model includes a pneumatic vacuum loading machine 110, a vacuum generator 120, a pulse back-blowing device 130 and a controller (not shown).

The pneumatic vacuum feeder 110 includes a loading basket 111, a filter 112, a hopper 113, and a discharge device 114. The filter 112 and the hopper 113 are sequentially installed in the upper bucket 111 from top to bottom to divide the space in the upper bucket 111 into a clean air chamber 1111, a suction chamber 1112 and a discharge chamber 1113. The discharging device 114 is provided at the bottom opening of the hopper 113, and is configured to be able to close or open the opening of the bottom of the hopper 113. The side wall of the upper bowl 111 is formed with an air suction port (not shown) and a blowback port (not shown) which are communicated with the clean air chamber 1111, a suction port 1114 which is communicated with the suction chamber 1112, and a discharge port 1115 which is communicated with the discharge chamber 1113. Specifically, the discharge opening 1115 is located at the bottom of the upper bucket 111, and the bottom opening of the hopper 113 is aligned with the discharge opening 1115.

The vacuum generator 120 communicates with the suction port and is used to create a vacuum negative pressure in the clean air chamber 1111 and the suction chamber. The vacuum generator 120 is a device that can provide a vacuum source when in operation, and can generate negative pressure by using a positive pressure air source.

The pulse back-blowing device 130 communicates with the back-blowing port and is used to back-blow air to the filter 112 in the clean air chamber 1111.

The controller is electrically connected to the discharging device 114, the vacuum generator 120 and the pulse back-blowing device 130, and is used for controlling the discharging device 114 to operate to close the bottom opening of the hopper 113, the vacuum generator 120 to open and the pulse back-blowing device 130 to close at the same time, and controlling the discharging device 114 to operate to open the bottom opening of the hopper 113, the vacuum generator 120 to close and the pulse back-blowing device 130 to open at the same time.

When the discharging device 114 closes the bottom opening of the hopper 113, the pneumatic vacuum feeding device performs only one action, namely feeding, specifically: under the negative pressure provided by the vacuum generator 120, external materials are sucked into the material suction cavity 1112 through the material suction opening 1114, and the material airflow in the material suction cavity 1112 realizes the complete separation of the materials and air under the action of the filter 112, and the separated materials fall into the hopper 113 under the action of self gravity;

when the discharging device 114 opens the bottom opening of the hopper 113, the pneumatic vacuum material conveying apparatus performs two actions at the same time, that is, after the discharging device 114 operates to open the bottom opening of the hopper 113, the material in the hopper 113 falls into the material receiving parts such as the material receiving hopper and the material storage bin needing to be charged under the action of self gravity through the material discharging hole 1115, so as to realize the material charging work; secondly, the pulse back-blowing device 130 works and blows air back into the filter 112 through the air cleaning cavity 1111 to back-blow dust on the surface of the filter 112, thereby achieving the purpose of automatically cleaning the filter 112.

Therefore, the pneumatic vacuum material conveying equipment can automatically clean the filter 130 in the working process, does not need to stop or disassemble, can ensure the air permeability of the filter 112 in the working process, can avoid the dust overflow in the working process, ensures higher material conveying efficiency, and simultaneously ensures lower probability of dust pollution to surrounding environment and injury to operators.

Meanwhile, the vacuum generator 120 and the pulse back-blowing device 130 can be installed on the pneumatic vacuum feeder 110, so that the occupied area of the pneumatic vacuum feeding device 100 is greatly reduced.

In some embodiments, the sidewall of the upper bowl 111 is formed with a pressure relief vent 1116 in communication with the discharge chamber 1113. A pressure relief tube 115 is provided at the pressure relief vent 1116. The pneumatic vacuum infusion apparatus 100 also includes a pressure relief cloth bag 116. The pressure relief cloth bag 116 is wrapped at one end of the pressure relief tube 115 away from the pressure relief opening 1116.

The pressure release opening 1116 is used for guaranteeing pressure balance inside and outside the discharging cavity 1113, so that air pressure of the discharging cavity 1113 is stable, and materials in the hopper 113 can be guaranteed to smoothly and rapidly fall into receiving pieces needing to be fed, such as a receiving hopper, a material storage bin and the like, when the bottom opening of the hopper 113 is opened. The pressure relief cloth bag 116 prevents the dust in the discharge cavity 1113 from diffusing into the surrounding environment through the pressure relief opening 1116 while ensuring the free circulation of air at the pressure relief opening 1116, thereby further reducing the probability of dust pollution and dust damage to operators in the working process of the pneumatic vacuum conveying device 100.

In some embodiments, upper bowl 111 includes top cap 1117, filter bowl 1118, drain bowl 1119, and docking flange 1020. The filter vat 1118, the discharge vat 1119 and the docking flange 1020 are hollow cylinder structures with two open ends. Both ends of the discharge tub 1119 are detachably connected to one end of the filter tub 1118 and one end of the docking flange 1020, respectively. The cap 1117 is removably secured to an end of the filter vat 1118 facing away from the drainage vat 1119. The filter 112 is mounted in the filter bowl 1118 and the hopper 113 is mounted in the discharge bowl 1119. The top cover 1117 is provided with an air suction port and a back-blowing port. The side wall of the filter barrel 1118 below the filter 112 is provided with a suction inlet 1114. A discharge outlet 1115 is formed in the bottom of the discharge barrel 1119.

When the pneumatic vacuum conveying equipment 100 is large-scale feeding equipment, the feeding barrel 111 is divided into four parts of the top cover 1117, the filtering barrel 1118, the discharging barrel 1119 and the butt flange 1020, so that the processing difficulty of the feeding barrel 111 can be reduced, and the processing precision can be improved. Meanwhile, the top cover 1117, the filtering barrel 1118, the discharging barrel 1119 and the butt flange 1020 are connected in a mutually detachable manner, so that the assembly and disassembly of parts in the feeding barrel 111 are facilitated, the pneumatic vacuum feeder 110 is easier to assemble, the pneumatic vacuum feeder can be disassembled and transported in the transportation process of the large pneumatic vacuum feeding equipment 100, and the pneumatic vacuum feeding equipment can be assembled on site, so that the problem of high transportation difficulty of the large pneumatic vacuum feeding equipment 100 is solved.

Further, in some embodiments, the two ends of the discharge cartridge are removably connected to one end of the filter cartridge 1118 and one end of the docking flange 1020, respectively, by quick-open clips 1121. The quick opening clamp 1121 is provided to enable the disassembly and assembly between the filter vat 1118 and the discharge vat 1119, and between the discharge vat 1119 and the docking flange 1020 to be quicker and quicker, and further enable the disassembly and cleaning of the pneumatic vacuum feeder 110 to be more convenient and quicker.

In some embodiments, discharge device 114 includes a discharge gate 1141, a revolving cylinder 1142, and a discharge valve (not shown). One end of the discharging door 1141 is rotatably installed on the inner wall of the upper barrel 111 or the edge of the bottom opening of the hopper 113. The revolving cylinder 1142 is configured to provide a driving force for driving the discharge gate 1141 to rotate in a direction toward the hopper 113. The discharge valve is used for communicating the rotary cylinder 1142 with an external air source. The controller is electrically connected with the discharge valve.

When the bottom opening of the hopper 113 is closed and opened, the controller controls the discharge valve to be opened to supply air to the rotary cylinder 1142, thereby driving the discharge door 1141 to rotate toward the hopper 113 by the rotary cylinder 1142 to close the bottom opening of the hopper 113; when the bottom opening of the hopper 113 needs to be opened, the controller controls the discharge valve to be closed, and cuts off the air supply to the rotary cylinder 1142, at this time, the discharge door 1141 rotates in a direction away from the bottom of the hopper 113 under the rotation of its own weight to open the bottom opening of the hopper 113.

Of course, in other embodiments, the discharging device may also have other structures, such as an electromagnetic adsorption door structure, a linear pushing door structure, and so on.

In some embodiments, the steel wire hose 150 has the advantages of high elasticity, high negative pressure resistance, corrosion resistance and the like, so that the first PVC steel wire hose 150 is connected between the electric blower 130 and the suction opening 121, the installation between the electric blower 130 and the pneumatic vacuum feeder 110 can be reduced by the distance between the two and the field space environment,

In some embodiments, the pneumatic vacuum infusion apparatus 100 further comprises an in-line steel hose 140, a suction nozzle 150 in communication with one end of the in-line steel hose, and an air tube 160 in communication with the in-line steel hose 140. The end of the embedded steel wire hose 140 remote from the suction nozzle 150 communicates with the suction opening 1114. When in use, the material sucking nozzle 150 can be directly placed in a material pile to suck materials, at this time, under the action of negative pressure generated by the vacuum generator 120, the materials sucked into the embedded steel wire hose 140 through the fine material nozzle 170 and the vacuum air sucked into the embedded steel wire hose through the air pipe 160 form a logistics air flow together, and the logistics air flow enters the material sucking cavity 1112 through the fine material opening 1114 and is separated from the air at the filter 130, so that the pneumatic vacuum material conveying equipment 100 is more convenient to use.

Moreover, the length of the embedded steel wire hose 140 can be selected according to the distance between the material pile and the pneumatic vacuum feeder 110, so that the installation of the pneumatic vacuum feeder 110 is prevented from being limited by the material taking position and the surrounding ring. Because the embedded steel wire hose 140 has the advantages of high elasticity, high negative pressure resistance, corrosion resistance and the like, the embedded steel wire hose 140 has longer service life, and the use convenience and the applicability of the pneumatic vacuum conveying equipment 100 are improved.

Specifically, the embedded steel wire hose 140 is a food-grade PVC steel wire hose, so as to help the pneumatic vacuum conveying apparatus 100 to be applied to material conveying occasions with high requirements on edible safety, such as food industry, pharmaceutical industry, grain industry, etc.

Of course, in other embodiments, the embedded steel wire hose 140 may also be an industrial grade PVC steel wire hose.

Further, in some embodiments, the in-line steel hose 140 communicates with the suction nozzle 150 and the air tube 160, respectively, via a three-way connection 170. The three-way joint 170 is arranged, so that the embedded steel wire hose 140 is detachably and hermetically connected with the suction nozzle 150 and the air pipe 160 respectively, the assembly and the disassembly are convenient, and the use convenience is further improved.

Further, in some embodiments, an on-off control valve 180 is provided on the air tube 160. In the actual use process, when the pneumatic vacuum conveying equipment 100 does not work for a long time, the passage between the air pipe 160 and the embedded steel wire hose 140 can be cut off by closing the switch control valve 180; when the pneumatic vacuum material conveying device 100 needs to work, the switch control valve 180 can be opened to ensure that the external air can smoothly enter the embedded steel wire hose 140, ensure that the material sucking work is smoothly carried out, and ensure the safety and reliability of the device.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A pneumatic vacuum conveying apparatus, comprising:

2. A pneumatic vacuum conveying apparatus according to claim 1, wherein a pressure relief port communicating with the discharge chamber is formed in a side wall of the upper barrel; a pressure relief pipe is arranged at the pressure relief opening; the pneumatic vacuum conveying equipment further comprises a pressure relief cloth bag; the pressure relief cloth bag is wrapped at one end of the pressure relief pipe, which is far away from the pressure relief opening.

3. A pneumatic vacuum conveying apparatus according to claim 1, wherein the upper bowl comprises a top cover, a filter bowl, a discharge bowl and a butt flange; the filter barrel body, the discharging barrel body and the butt flange are hollow barrel structures with two open ends; two ends of the discharging barrel body are detachably connected with one end of the filtering barrel body and one end of the butt flange respectively; the top cover is detachably covered at one end of the filtering barrel body, which is away from the discharging barrel body; the filter is arranged in the filter barrel body, and the hopper is arranged in the discharge barrel body; the top cover is provided with the air suction port and the back blowing port; the side wall of the filter barrel body below the filter is provided with the material sucking opening; the bottom of the discharging barrel body is provided with the discharging opening.

4. A pneumatic vacuum conveying apparatus according to claim 3, wherein both ends of the discharge cylinder are detachably connected to one end of the filter cylinder and one end of the butt flange, respectively, through quick-opening clips.

5. A pneumatic vacuum transfer apparatus as claimed in claim 1, wherein the discharge means comprises a discharge gate, a rotary cylinder and a discharge valve; one end of the discharging door is rotatably arranged on the inner wall of the charging barrel or the edge part of the bottom opening of the hopper; the rotary cylinder is used for providing a driving force for driving the discharging door to rotate along the direction towards the hopper; the discharge valve is used for communicating the rotary cylinder with an external air source; the controller is electrically connected with the discharge valve.

6. The pneumatic vacuum conveying apparatus according to claim 1, further comprising an embedded steel wire hose, a suction nozzle communicated with one end of the embedded steel wire hose, and an air pipe communicated with the embedded steel wire hose; and one end of the steel wire hose, which is far away from the suction nozzle, is communicated with the suction opening.

7. A pneumatic vacuum conveying apparatus according to claim 6, wherein said embedded steel wire hose is respectively communicated with said suction nozzle and said air pipe through three-way connectors.

8. A pneumatic vacuum conveying apparatus according to claim 6, wherein an on-off control valve is provided on the air pipe.