CN214569134U

CN214569134U - Pneumatic conveying guiding device

Info

Publication number: CN214569134U
Application number: CN202120353191.5U
Authority: CN
Inventors: 刘加增; 刘峻熙
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-11-02
Anticipated expiration: 2031-02-08

Abstract

The utility model discloses a pneumatic conveying guiding device relates to granular material and carries technical field, which comprises a valve body, the valve body is equipped with the chamber of admitting air and the chamber of giving vent to anger of intercommunication, admit air the chamber with it is equipped with the case to go out between the chamber, still be equipped with the total chamber of piston in the valve body, pneumatic conveying guiding device still includes the piston assembly, the piston assembly set up in the total chamber of piston will the air chamber is cut apart into in the total chamber of piston and concentrated air cavity, the one end of piston assembly with the case is connected admit air the chamber with be equipped with first hole pipeline between the air chamber admit air the chamber with concentrate and be equipped with second hole pipeline between the air cavity give vent to anger the chamber with be equipped with third hole pipeline between air chamber, the concentrated air cavity. The low-pressure energy-saving smooth non-blocking operation of the ash conveying system can be ensured without connecting other control gas sources and consuming redundant gas, and the gas resource saving is facilitated.

Description

Pneumatic conveying guiding device

Technical Field

The utility model relates to a technical field is carried to the graininess material, concretely relates to pneumatic conveying draws in ware.

Background

Granular material conveying systems widely applied to the fields of thermal power, metallurgy, chemical industry and the like mostly adopt a bin pump and an ash conveying pipeline to form a positive pressure concentrated phase conveying system.

At present, according to different materials conveyed pneumatically, when the pressure and the air input of a system air source cannot be adjusted and controlled, the air input is large and the materials are small, a high-pressure trend pipeline appears, the elbow has a sand blasting effect, and the abrasion is serious; when the air inflow is large and the amount of materials is large, a high-pressure trend pipeline appears, the elbow vibration is large, the pipe frame is damaged, and the pipeline is seriously abraded; when the air input is small and the amount of materials is large, pipe blockage occurs, so that the economic operation and safe production of equipment are influenced; if the air supply is unstable when the conveying equipment operates, the pressure of the bin pump and the conveying pipeline and the pressure of the air supply device accompanying the tracheal catheter are easily balanced, at the moment, any one check valve cannot be completely closed to cause the failure of the check valve, the phenomenon that the air supply carries ash to flow backwards occurs, and the equipment is damaged. Not only seriously damage equipment wear but also waste air sources, increase the overhaul labor intensity of staff, and also cause environmental pollution, and the traditional equipment and the adjustment mode can not meet the requirements of safety, environmental protection and stable operation. There is a need for a device for intelligently adjusting air pressure and air intake to overcome the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a pneumatic conveying guiding device to solve the above problems.

In order to achieve the above object, the present invention provides the following technical solutions:

a pneumatic conveying guiding device comprises a valve body, wherein the valve body is provided with an air inlet cavity and an air outlet cavity which are communicated, a valve core is arranged between the air inlet cavity and the air outlet cavity, a piston main cavity is further arranged in the valve body, the piston assembly is arranged in the piston main cavity and divides the piston main cavity into an air chamber and a concentrated air cavity, one end of the piston assembly is connected with the valve core, a first inner hole pipeline is arranged between the air inlet cavity and the air chamber, a second inner hole pipeline is arranged between the air inlet cavity and the concentrated air cavity, and a third inner hole pipeline is arranged between the air outlet cavity and the air chamber and the concentrated air cavity;

the valve core can move towards the air inlet side to control the on-off and the opening of the air inlet cavity and the air outlet cavity, the piston main cavity comprises a first piston cavity and a second piston cavity, the second piston cavity is close to the valve core, the piston surface of the first piston cavity is larger than that of the second piston cavity, and the piston assembly comprises a first piston arranged in the first piston cavity, a second piston arranged in the second piston cavity and a piston rod connected with the first piston, the second piston and the valve core.

Further, the first piston and the second piston are diaphragm-shaped pistons.

Furthermore, one end of the piston rod, which is close to the valve core, is in a frustum shape.

Furthermore, the pneumatic conveying guider further comprises a first spring and a second spring, the valve body is further provided with a first spring chamber and a second spring chamber, the first spring is arranged in the first spring chamber, one end of the first spring is abutted against one side, far away from the valve core, of the first piston, the second spring is arranged in the second spring chamber, and one end of the second spring is abutted against one side, far away from the piston assembly, of the valve core.

Further, pneumatic transmission leads to ware still includes the rubber diaphragm pad, the rubber diaphragm pad set up in the air chamber, just the rubber diaphragm pad will the air chamber with first spring room separates, first spring room is equipped with first drain hole.

Furthermore, the first inner hole pipeline is provided with a first throttle rod for adjusting the opening degree, the second inner hole pipeline is provided with a second throttle rod for adjusting the opening degree, the third inner hole pipeline is provided with a third throttle rod for adjusting the opening degree, and the third throttle rod is arranged on the third inner hole pipeline between the air chamber and the centralized air chamber.

Furthermore, a valve seat is arranged in the valve body, the valve core is movably arranged in the valve seat, and one side of the valve core close to the piston assembly can be pressed and sealed with a sealing surface of the valve seat.

Furthermore, the air outlet cavity is provided with a second sewage draining outlet, an ash blocking device and a check valve, the ash blocking device and the check valve are both far away from the valve core, and the check valve is positioned on one side of the ash blocking device far away from the valve core.

Further, the piston assembly further comprises a third piston, the piston assembly cavity further comprises a third piston cavity, the third piston cavity is located on one side, close to the valve core, of the second piston cavity, the third piston is arranged in the third piston cavity, the third piston is fixed to the piston rod, and an exhaust hole is formed between the second piston cavity and the third piston cavity.

Furthermore, the pneumatic conveying lead-through device also comprises an adjusting screw, the adjusting screw is screwed on the valve body, and the threaded end of the adjusting screw is positioned in the second piston cavity.

The utility model has the advantages of as follows:

the utility model provides a pneumatic conveying guiding device, the chamber of admitting air is connected with the air supply, and the chamber of giving vent to anger is connected with pipeline. When the conveying pipeline is blocked, the pressure of the conveying pipeline is higher, the pressure of the conveying pipeline is transmitted to the concentrated air cavity and the air chamber along the third inner hole pipeline, the piston assembly is forced to move towards the valve core, so that the valve core is driven to move, a channel between the air inlet cavity and the air outlet cavity is opened or the opening degree of the channel between the air inlet cavity and the air outlet cavity is increased, and the air in the air inlet cavity enters the air outlet cavity through a gap between the valve core and the valve seat, so that the conveying pipeline is dredged by utilizing high-pressure air (high relative to the pressure of the air outlet cavity) in the air inlet cavity, other control air sources do not need to be connected, unnecessary air is not consumed, the low-pressure energy-saving smooth and non-blocking operation of the ash conveying system can be ensured, and the gas resource saving is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the range which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic structural view of a pneumatic conveying guider according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a valve body of the pneumatic conveying guider according to the embodiment of the present invention;

fig. 3 is a schematic view of the installation of the valve seat and the valve core according to the embodiment of the present invention.

In the figure: 1-upper valve body, 2-lower valve body, 3-first spring chamber, 4-first piston chamber, 5-second piston chamber, 6-third piston chamber, 7-gas outlet chamber, 8-second spring chamber, 9-gas inlet chamber, 10-upper wire pressing cover, 11-first drain outlet, 12-lower wire pressing cover, 13-partition plate, 14-first inner hole pipeline, 15-second inner hole pipeline, 16-third inner hole pipeline, 17-top cover, 18-first throttle lever, 19-explosion-proof pressure gauge, 20-second throttle lever, 21-rubber diaphragm pad, 22-valve seat, 23-sealing surface, 24-guide positioning column, 25-valve core, 26-gas chamber, 27-concentrated gas chamber, 28-first piston, 29-second piston, 30-third piston, 31-piston rod, 32-first spring, 33-second spring, 34-second sewage draining outlet, 35-ash blocking device, 36-check valve, 37-exhaust hole and 38-adjusting screw.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. 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 present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

As shown in fig. 1 to 3, an intelligent pressure-reducing energy-saving pneumatic transmission guiding device, also called a pneumatic transmission guiding device, includes a valve body, and a valve core, a piston assembly, a compression spring, etc. disposed in the valve body.

The valve body includes valve body 1 and lower valve body 2, goes up valve body 1 and connects in the top of lower valve body 2. A first spring chamber 3, a first piston cavity 4, a second piston cavity 5, a third piston cavity 6, an air outlet cavity 7, a second spring chamber 8 and an air inlet cavity 9 which are communicated with each other are arranged in the valve body; the first piston cavity 4, the second piston cavity 5 and the third piston cavity 6 are collectively called as a piston total cavity, the piston surface of the first piston cavity 4 is larger than that of the second piston cavity 5, the piston surface of the second piston cavity 5 is larger than that of the third piston cavity 6, one end of the air outlet cavity 7 is communicated with the third piston cavity 6 and the second spring chamber 8, and the air inlet cavity 9 is located on the horizontal side of the second spring chamber 8. A first through hole is formed in the top of the upper valve body 1, an upper screw pressing cover 10 is connected to the first through hole in a sealing mode, and the first through hole and the upper screw pressing cover 10 form a first spring chamber 3; a first drain outlet 11 is arranged at the end part of the upper wire pressing cover 10, and the first drain outlet 11 is plugged by a compression screw under normal conditions; a second through hole is formed in the lower portion of the lower valve body 2, the lower pressing screw cover 12 is connected to the second through hole in a sealing mode, and the second through hole and the lower pressing screw cover 12 form a second spring chamber 8; the through hole is hermetically connected with the screw pressing cover, and the form of threads and a sealing ring can be adopted; the first through hole and the second through hole can be formed in the valve body in a direct machining mode, and a hollow cylinder can be additionally arranged on the valve body, so that an inner hole of the hollow cylinder serves as the through hole. A partition 13 for reducing the flow area is provided at the connection of the inlet chamber 9 and the second spring chamber 8. Be equipped with first hole pipeline 14, second hole pipeline 15 and third hole pipeline 16 in the valve body, first hole pipeline 14 intercommunication admit air chamber 9 and first piston chamber 4, second hole pipeline 15 intercommunication second spring chamber 8 and first piston chamber 4, third hole pipeline 16 intercommunication first piston chamber 4, wherein, third hole pipeline and first piston chamber 4 are through two position intercommunications. In an alternative of the embodiment, a top cover 17 is connected to the upper valve body 1 through a compression screw, and the top cover 17 is connected with the upper valve body 1 in a sealing mode. One end of the first inner hole pipeline 14 and one end of the third inner hole pipeline 16 are both provided with a distance from the top cover 17 so as to be communicated with the first piston cavity 4 in the valve body; and the other position of the third bore line 16 communicating with the first piston chamber 4 may be in communication with a communication hole. A first throttle lever 18 for controlling the opening degree is arranged on the first inner hole pipeline 14, an explosion-proof pressure gauge 19 is arranged on the outer side of the valve body, the pressure gauge 19 is communicated with the first inner hole pipeline 14, and a second throttle lever 20 for controlling the opening degree is arranged on the second inner hole pipeline 15; under the action of the first throttle lever 18 and the second throttle lever 20, the ventilation volume of the first inner hole pipeline 14 is greater than the ventilation volume of the second inner hole pipeline 15, so that the gas pressures applied to the first piston 28 and the second piston 29 are balanced, and the pressures of the first inner hole pipeline 14 and the second inner hole pipeline 15 are not enough to push the piston assembly to move downwards against the elastic force of the second spring 33, that is, the valve core 25 is in a normally closed state. A rubber diaphragm pad 21 is arranged at the communication between the first spring chamber 3 and the first piston chamber 4 to prevent dust impurities from entering the first spring chamber 3 and affecting the operation of the first spring 32.

A valve seat 22 is arranged in the valve body, the lower end of the valve seat 22 is communicated with the second spring chamber 8, the upper end of the valve seat is communicated with the air outlet cavity 7, the lower end opening of the valve seat 22 is smaller than the upper end opening of the valve seat 22, so that a limiting surface is formed at the upper end of the valve seat 22 and serves as a sealing surface 23 sealed with the valve core 25, and a guide positioning column 24 with a certain gap with the valve core 25 is arranged outside the circumference of the valve seat 22. The valve core 25 is arranged in the valve seat 22, the valve core 25 can move towards the lower end of the valve seat 22, when the upper side surface of the valve core 25 is pressed with the sealing surface 23 at the upper end of the valve seat 22, the valve core 25 is sealed, and the opening degree can be adjusted when the valve core 25 moves downwards.

The piston assembly is arranged in the piston assembly cavity to divide the piston assembly cavity into an air chamber 26 and an air collecting cavity 27, and one end of the piston assembly is connected with the valve core 25; wherein, the first inner hole pipeline 14 is communicated with the air chamber 26, the rubber diaphragm pad 21 is arranged in the air chamber 26, the second inner hole pipeline 15 is communicated with the concentrated air chamber 27, and the third inner hole pipeline 16 is also respectively communicated with the concentrated air chamber 27 and the air chamber 26 besides being communicated with the air outlet chamber 7. Specifically, the piston assembly includes, from top to bottom, a first piston 28 disposed in the first piston chamber 4, a second piston 29 disposed in the second piston chamber 5, a third piston 30 disposed in the third piston chamber 6, and a piston rod 31 connecting the first piston 28, the second piston 29, the third piston 30, and the valve element 25. The first piston 28 and the second piston 29 are spacer-like pistons, and the area difference between the first piston 28 and the second piston 29 is increased. One end of the piston rod 31 close to the valve core 25 is in a frustum shape, that is, the lower end of the piston rod 31 is in a frustum shape, so that the resistance of the piston rod 31 to the gas flowing into the gas outlet cavity 7 from the gap between the valve core 25 and the valve seat 22 is effectively reduced. The three pistons and the three piston cavities are respectively arranged in a sliding mode and are sealed. The three pistons are integrally formed or separately formed with the piston rod 31.

The compression springs comprise a first spring 32 pre-stressed in the first spring chamber 3 and a second spring 33 pre-stressed in the second spring chamber 8; one end of the first spring 32 abuts against the first piston 28, and the other end of the first spring 32 abuts against the upper wire pressing cover 10; one end of the second spring 33 abuts against the valve body 25, and the other end of the second spring 33 abuts against the lower push cap 12.

In this embodiment, the air outlet chamber 7 is provided with a second sewage outlet 34, an ash blocking device 35 and a check valve 36, the ash blocking device 35 and the check valve 36 are both far away from the valve core 25, and the check valve 36 is positioned on one side of the ash blocking device 35 far away from the valve core 25, so that the device cannot be damaged by air return and ash pouring under any medium working condition, and the device is stable and reliable in operation and durable in use.

When the piston assembly moves downwards, the second piston 29 approaches the bottom surface of the second piston cavity 5, and air is compressed to form high pressure; when the piston assembly moves upwards, the second piston 29 is far away from the bottom surface of the second piston cavity 5, and then the piston assembly is vacuumized to form low pressure, which is not beneficial to the flexible movement of the piston assembly, therefore, an exhaust hole 37 is arranged between the second piston cavity 5 and the third piston cavity 6, so that air is not compressed, and the piston assembly is not vacuumized. In an alternative embodiment, the pneumatic transport lead-through further comprises an adjusting screw 38, the adjusting screw 38 is screwed to the valve body, and the threaded end of the adjusting screw 38 is located in the second piston chamber 5, so that the downward displacement position of the second piston 29 can be adjusted.

In this embodiment, the cross-sectional area of the valve spool 25 is smaller than the cross-sectional areas of the first piston 28 and the second piston 29, and in the normal state, the second spring 33 overcomes the pressure of the medium on the piston assembly, and always gives a tightening force to the valve spool 25 to ensure sealing.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A pneumatic conveying guiding device comprises a valve body, wherein an air inlet cavity and an air outlet cavity are formed in the valve body and communicated with each other, and a valve core is arranged between the air inlet cavity and the air outlet cavity;

2. The pneumatic conveying primer according to claim 1, wherein the first and second pistons are diaphragm-shaped pistons.

3. The pneumatic conveying primer according to claim 1, wherein one end of the piston rod near the valve core is frustum-shaped.

4. The pneumatic conveying primer according to claim 1, further comprising a first spring and a second spring, wherein the valve body further comprises a first spring chamber and a second spring chamber, the first spring is disposed in the first spring chamber, one end of the first spring abuts against one side of the first piston away from the valve core, the second spring is disposed in the second spring chamber, and one end of the second spring abuts against one side of the valve core away from the piston assembly.

5. The pneumatic conveying leading device according to claim 4, further comprising a rubber diaphragm pad disposed in the air chamber, and the rubber diaphragm pad separates the air chamber from the first spring chamber, and the first spring chamber is provided with a first drain port.

6. The pneumatic conveying primer according to claim 1, wherein the first bore line is provided with a first throttle lever for adjusting the opening degree, the second bore line is provided with a second throttle lever for adjusting the opening degree, the third bore line is provided with a third throttle lever for adjusting the opening degree, and the third throttle lever is disposed on the third bore line between the air chamber and the air collecting chamber.

7. The pneumatic conveying primer according to claim 1, wherein a valve seat is provided in the valve body, the valve core is movably disposed in the valve seat, and a side of the valve core adjacent to the piston assembly is capable of pressing and sealing with a sealing surface of the valve seat.

8. The pneumatic conveying guider according to claim 1, wherein said air outlet cavity is provided with a second sewage outlet, an ash stopper and a check valve, said ash stopper and said check valve are both far away from said valve core, and said check valve is located on one side of said ash stopper far away from said valve core.

9. The pneumatic conveying primer according to claim 1, wherein the piston assembly further comprises a third piston, the piston assembly further comprises a third piston cavity, the third piston cavity is located on one side of the second piston cavity close to the valve core, the third piston is arranged in the third piston cavity, the third piston is fixed to the piston rod, and a vent hole is arranged between the second piston cavity and the third piston cavity.

10. The pneumatic conveying opener according to claim 1, further comprising an adjusting screw screwed to the valve body, a threaded end of the adjusting screw being located in the second piston chamber.