CN113357379B - Pneumatic feed valve for pneumatic powder conveying - Google Patents
Pneumatic feed valve for pneumatic powder conveying Download PDFInfo
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- CN113357379B CN113357379B CN202110657631.0A CN202110657631A CN113357379B CN 113357379 B CN113357379 B CN 113357379B CN 202110657631 A CN202110657631 A CN 202110657631A CN 113357379 B CN113357379 B CN 113357379B
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- rocker arm
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- shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/16—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
- F16K31/163—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
A pneumatic feed valve for pneumatic powder conveying is provided with a pneumatic actuator, an outer rocker arm, an inner rocker arm, a rocker arm shaft and a universal guide shaft; the piston rod of the pneumatic actuator is hinged with one end of the outer rocker arm, and the other end of the outer rocker arm is connected with the rocker arm shaft; one end of the inner rocker arm is connected with the rocker arm shaft, and the other end of the inner rocker arm is connected with the universal guide shaft for hinging; the universal guide shaft is connected with the top of the valve core; the edge of the through hole is provided with a sealing flange, the lower flange at the bottom of the valve body is fixedly connected with the sealing flange, and a sealing ring is filled between the lower flange and the sealing flange. According to the technical scheme, the valve body is driven by the straight-through type rocker shaft, so that the valve has large drift diameter, strong pressure resistance and high feeding speed; the material is calculated according to the hourly conveying amount, so that the feeding time is saved, the conveying time is increased, the material conveying yield is greatly improved, and the method is particularly suitable for conveying materials with poor mobility and certain adhesiveness; when the sealing ring is excessively worn to generate air leakage, the sealing ring can be recovered only by replacing the sealing ring, so that the maintenance is convenient and the maintenance cost is low.
Description
Technical Field
The invention relates to a pneumatic feed valve, in particular to a pneumatic feed valve for pneumatic powder conveying.
Background
The pneumatic feeding valve is a valve which is necessary to be adopted on powder pneumatic conveying equipment and is a key component of powder pneumatic conveying. The present pneumatic feed valve is mostly a pneumatic dome feed valve, such as the prior art discloses a dome feed valve comprising: the valve seat is arranged in the valve seat and is rotationally connected with the hemispherical valve core; wherein, feed inlet department of disk seat is provided with the flange, sealing connection between flange and the disk seat, and is provided with sealing device between flange and the disk seat, and sealing device includes: the diaphragm sealing ring is clamped between the flange and the valve seat, a sealing space is formed between the diaphragm sealing ring and the flange and between the diaphragm sealing ring and the valve seat, an air inlet pipe communicated with the sealing space is arranged on the flange, and the diaphragm sealing ring is in sealing connection with the hemispherical valve core under the pushing of air pressure. According to the technical scheme, the sealing space is formed by the arranged diaphragm sealing ring, and air is supplied in the sealing space.
The traditional technical scheme has the advantages of poor sealing effect, low material conveying output, easy abrasion and gas leakage in the using process, high overall manufacturing cost, poor stability and short service life, and particularly has worse using effect on materials with poor fluidity and certain adhesiveness, and cannot meet the requirement of powder pneumatic conveying.
Disclosure of Invention
The invention aims to provide a pneumatic feed valve for pneumatic powder conveying, which solves the problems of poor sealing effect, low material conveying yield, easy abrasion, air leakage and the like in the using process of the traditional technology, and is particularly suitable for conveying materials with poor flowability and certain adhesiveness.
The technical scheme for solving the technical problems is as follows: the pneumatic feeding valve for powder pneumatic conveying comprises a valve body, wherein a valve core is arranged in the valve body, the top of the valve body is connected with an upper flange, the bottom of the valve body is connected with the edge of a through hole of powder pneumatic conveying equipment through a lower flange, the valve core is closed or opened at the through hole, and the pneumatic feeding valve further comprises a pneumatic actuator, an outer rocker arm, an inner rocker arm, a rocker arm shaft and a universal guide shaft;
the piston rod of the pneumatic actuator is hinged with one end of the outer rocker arm, and the other end of the outer rocker arm is connected with the rocker arm shaft; one end of the inner rocker arm is connected with the rocker arm shaft, and the other end of the inner rocker arm is connected with the universal guide shaft in a hinged manner; the universal guide shaft is connected with the top of the valve core;
the edge of the through hole is provided with a sealing flange, a lower flange at the bottom of the valve body is fixedly connected with the sealing flange, and a sealing ring is filled between the lower flange and the sealing flange.
As a preferable scheme of the pneumatic feeding valve for pneumatic powder conveying, an avoidance groove is formed on the side part of the valve body, and the rocker shaft is inserted into the avoidance groove from the outer side of the valve body;
the outer rocker arm is positioned at the outer side of the valve body, and is connected with a rocker arm shaft at the outer side of the valve body in a key slot mode;
the inner rocker arm is positioned in the valve body, and the inner rocker arm is connected with a rocker arm shaft in the valve body through a key groove.
As the preferable scheme of the pneumatic feeding valve for powder pneumatic conveying, the rocker shaft is sleeved with a return spring, and the return spring is positioned in the valve body; the side part of the inner rocker arm is connected with a positioning head, one end of the return spring is contacted with the positioning head, and the other end of the return spring is contacted with the inner wall of the valve body.
As the preferable scheme of the pneumatic feeding valve for pneumatic powder conveying, the outer side of the valve body is provided with a mounting seat, and the bottom of the pneumatic actuator is connected with the mounting seat;
the included angle between the piston rod of the pneumatic actuator and the horizontal plane is 10-20 degrees.
As the preferable scheme of the pneumatic feeding valve for pneumatic powder conveying, the lower flange at the bottom of the valve body is connected with the sealing flange through fastening screws.
As the preferable scheme of the pneumatic feeding valve for powder pneumatic conveying, the inner side of the sealing ring is matched with the outer wall of the valve core, and the outer diameter of the valve core is smaller than the inner diameter of the sealing flange.
As the preferable scheme of the pneumatic feeding valve for powder pneumatic conveying, the abrasion thickness and the height of the sealing ring are reserved in the sealing ring, and the extension stroke of the piston rod of the pneumatic actuator is reserved to enable the valve core to be lifted upwards to reserve the abrasion stroke.
As the preferable scheme of the pneumatic feeding valve for powder pneumatic conveying, the valve core is designed by adopting a 30-degree cone, and the valve core and the sealing ring are in soft sealing in a line contact mode.
The valve body is internally provided with a valve core, the top of the valve body is connected with an upper flange, the bottom of the valve body is connected with the edge of a through hole of powder pneumatic conveying equipment through a lower flange, the valve core is closed or opened at the through hole, and the valve body is further provided with a pneumatic actuator, an outer rocker arm, an inner rocker arm, a rocker arm shaft and a universal guide shaft; the piston rod of the pneumatic actuator is hinged with one end of the outer rocker arm, and the other end of the outer rocker arm is connected with the rocker arm shaft; one end of the inner rocker arm is connected with the rocker arm shaft, and the other end of the inner rocker arm is connected with the universal guide shaft for hinging; the universal guide shaft is connected with the top of the valve core; the edge of the through hole is provided with a sealing flange, the lower flange at the bottom of the valve body is fixedly connected with the sealing flange, and a sealing ring is filled between the lower flange and the sealing flange. According to the technical scheme, the valve body is driven by the straight-through type rocker shaft, so that the valve has large drift diameter, strong pressure resistance and high feeding speed; the material is calculated according to the hourly conveying amount, so that the feeding time is saved, the conveying time is increased, the material conveying yield is greatly improved, and the method is particularly suitable for conveying materials with poor mobility and certain adhesiveness; the device has the obvious advantages of low cost, stable performance, long service life and the like; when the sealing ring is excessively worn to generate air leakage, the sealing ring can be recovered only by replacing the sealing ring, so that the maintenance is convenient and the maintenance cost is low.
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 will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the scope of the invention.
FIG. 1 is a schematic diagram of a pneumatic feed valve for pneumatic powder conveying in a closed state structure according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an open state structure of a pneumatic feeding valve for pneumatic powder conveying according to an embodiment of the present invention.
In the figure, 1, a valve body; 2. a valve core; 3. an upper flange; 4. a lower flange; 5. a pneumatic actuator; 6. an outer rocker arm; 7. an inner rocker arm; 8. a rocker shaft; 9. a universal guide shaft; 10. a sealing flange; 11. a seal ring; 12. a through port; 13. an avoidance groove; 14. A return spring; 15. a positioning head; 16. a mounting base; 17. and (5) fastening a screw.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 and 2, there is provided a pneumatic feeding valve for pneumatic powder conveying, comprising a valve body 1, wherein a valve core 2 is arranged in the valve body 1, the top of the valve body 1 is connected with an upper flange 3, the bottom of the valve body 1 is connected with the edge of a through hole 12 of a pneumatic powder conveying device through a lower flange 4, the valve core 2 is closed or opened at the through hole 12, and the pneumatic feeding valve further comprises a pneumatic actuator 5, an outer rocker arm 6, an inner rocker arm 7, a rocker arm shaft 8 and a universal guide shaft 9;
the piston rod of the pneumatic actuator 5 is hinged with one end of the outer rocker arm 6, and the other end of the outer rocker arm 6 is connected with the rocker arm shaft 8; one end of the inner rocker arm 7 is connected with the rocker arm shaft 8, and the other end of the inner rocker arm 7 is connected with the universal guide shaft 9 in a hinged manner; the universal guide shaft 9 is connected with the top of the valve core 2;
the edge of the through hole 12 is provided with a sealing flange 10, a lower flange 4 at the bottom of the valve body 1 is fixedly connected with the sealing flange 10, and a sealing ring 11 is filled between the lower flange 4 and the sealing flange 10.
In the embodiment, the valve body 1 is mainly of a steel structure, the valve core 2 is formed by hot pressing a carbon plate, the sealing conical surface of the valve core 2 is precisely machined, the surface is subjected to wear-resistant treatment, the smoothness is high, the friction resistance is small, the sealing ring 11 is formed by adopting silicon fluororubber in a compression molding mode, and the toughness, the wear resistance and the temperature resistance are good.
In this embodiment, a relief groove 13 is formed on the side of the valve body 1, and the rocker shaft 8 is inserted into the relief groove 13 from the outside of the valve body 1; the outer rocker arm 6 is positioned at the outer side of the valve body 1, and the outer rocker arm 6 is connected with a rocker arm shaft 8 at the outer side of the valve body 1 in a key groove mode; the inner rocker arm 7 is positioned inside the valve body 1, and the inner rocker arm 7 is connected with a rocker arm shaft 8 inside the valve body 1 through a key groove. The design of the avoidance groove 13 enables the movable space of the inner rocker arm 7 and the outer rocker arm 6 to be larger, so that larger powder passing area is reserved when the inner rocker arm 7 drives the valve core 2 to move to one side. The outer rocker arm 6 and the inner rocker arm 7 are connected with the rocker arm shaft 8 by adopting key grooves, so that the rocker arm shaft 8 can be followed or driven to run.
In this embodiment, an installation seat 16 is provided on the outer side of the valve body 1, and the bottom of the pneumatic actuator 5 is connected with the installation seat 16; the included angle between the piston rod of the pneumatic actuator 5 and the horizontal plane is 10-20 degrees. The piston rod of the pneumatic actuator 5 has a certain included angle with the horizontal plane, which is beneficial for the piston rod to drive the outer rocker arm 6 to operate. The pneumatic actuator 5 is arranged outside the compression area, and no air leakage phenomenon caused by the damage of the shaft seal can be generated.
In this embodiment, the lower flange 4 at the bottom of the valve body 1 is connected with the sealing flange 10 through fastening screws 17. The inner side of the sealing ring 11 is matched with the outer wall of the valve core 2, and the outer diameter of the valve core 2 is smaller than the inner diameter of the sealing flange 10. The seal ring 11 is reserved with wear thickness and height, and the piston rod of the pneumatic actuator 5 is reserved with an extension stroke to enable the valve core 2 to be lifted upwards for reserved wear stroke. The valve core 2 is designed by adopting a 30-degree cone, and the valve core 2 and the sealing ring 11 are in soft sealing in a line contact mode.
Specifically, the external diameter of the sealing ring 11 is consistent with the external diameters of the lower flange 4 and the sealing flange 10 of the valve body 1, the internal diameter of the sealing ring 11 is smaller than the internal diameter of the lower flange 4 of the valve body 1, the step of the sealing ring 11 is in clearance fit with the internal diameter of the sealing flange 10, the step height of the sealing ring 11 is slightly lower than the thickness of the sealing flange 10, the sealing position of the sealing ring 11 is preferably an R5mm semi-circular angle, the unilateral thickness is 25mm, and then the lower flange 4, the sealing ring 11 and the sealing flange 10 of the valve body 1 are fastened by fastening screws 17, so that the periphery of the sealing ring 11 is fully wrapped, and excessive deformation after extrusion can not be generated when the valve core 2 rises and is tensioned.
Specifically, since the seal ring 11 is reserved with sufficient wear thickness and height, the outer diameter of the valve core 2 is slightly smaller than the inner diameter of the seal flange 10. The piston rod of the pneumatic actuator 5 also reserves enough extension stroke, so that the valve core 2 can be lifted upwards by 25mm to reserve wear stroke, and when the sealing ring 11 is worn due to frequent opening and closing of the pneumatic feed valve, the pneumatic actuator has enough compensation space and keeps good sealing performance.
Specifically, the valve core 2 adopts a 30-degree cone design, the valve core 2 is lifted upwards when closed, and the valve core 2 and the sealing ring 11 realize soft sealing in a line contact mode. Since the 30 ° cone spool 2 is lifted upward, the material possibly adhering to the surface of the spool 2 automatically falls off when the spool 2 moves upward, so that it cannot adhere to the surface. Therefore, the method is particularly suitable for the working conditions of powder materials, materials with poor fluidity and materials with certain adhesiveness.
In the embodiment, the inner rocker arm 7 is connected with the valve core 2 by adopting the universal guide shaft 9, and plays an important role in automatic core positioning when the valve core 2 moves up and down and is closed, so that the valve core 2 is closed more tightly without dead angles, and the valve core 2 can be flexibly and freely compensated even if the sealing ring 11 is gradually worn in use. When powder is conveyed, the valve core 2 is tightly closed in operation due to the jacking effect of the pressure in the pump. Before the pressure in the pump is not released to normal pressure, the pneumatic feed valve cannot be opened, so that an effective safety protection effect is achieved.
In one embodiment of the pneumatic feeding valve for pneumatic powder conveying, the pneumatic feeding valve is additionally provided with a signal feedback switch, the working state of the valve is detected, and remote intelligent control is conveniently realized.
In one embodiment of the pneumatic feeding valve for powder pneumatic conveying, the rocker shaft 8 is sleeved with a return spring 14, and the return spring 14 is positioned inside the valve body 1; the side part of the inner rocker arm 7 is connected with a positioning head 15, one end of the return spring 14 contacts the positioning head 15, and the other end of the return spring 14 contacts the inner wall of the valve body 1. The return spring 14 is a double-acting force return torsion spring, and when the pneumatic actuator 5 is out of pressure, the valve core 2 cannot fall down and be automatically opened due to the out-of-pressure.
The valve body 1 is internally provided with a valve core 2, the top of the valve body 1 is connected with an upper flange 3, the bottom of the valve body 1 is connected with the edge of a through hole 12 of powder pneumatic conveying equipment through a lower flange 4, the valve core 2 is closed or opened at the through hole 12, and a pneumatic actuator 5, an outer rocker arm 6, an inner rocker arm 7, a rocker arm shaft 8 and a universal guide shaft 9 are further arranged; the piston rod of the pneumatic actuator 5 is hinged with one end of the outer rocker arm 6, and the other end of the outer rocker arm 6 is connected with a rocker arm shaft 8; one end of the inner rocker arm 7 is connected with a rocker arm shaft 8, and the other end of the inner rocker arm 7 is connected with a universal guide shaft 9 in a hinged manner; the universal guide shaft 9 is connected with the top of the valve core 2; the edge of the through hole 12 is provided with a sealing flange 10, the lower flange 4 at the bottom of the valve body 1 is fixedly connected with the sealing flange 10, and a sealing ring 11 is filled between the lower flange 4 and the sealing flange 10. When the piston rod of the pneumatic actuator 5 is retracted, the inner rocker arm 7 and the valve core 2 move downwards, so that the pneumatic feed valve is opened, and powder can enter. When the piston rod of the pneumatic actuator 5 stretches out, the inner rocker arm 7 and the valve core 2 move upwards, so that the pneumatic feeding valve is closed, and powder stops entering. The inner rocker arm 7 is connected with the valve core 2 by adopting a universal guide shaft 9, plays an important role in automatic core positioning when the valve core 2 moves up and down and is closed, so that the valve core 2 is closed more tightly without dead angles, and the valve core 2 can be flexibly and freely compensated even if the sealing ring 11 is gradually worn in use. When powder is conveyed, the valve core 2 is tightly closed in operation due to the jacking effect of the pressure in the pump. Before the pressure in the pump is not released to normal pressure, the pneumatic feed valve cannot be opened, so that an effective safety protection effect is achieved. Since the 30 ° cone spool 2 is lifted upward, the material possibly adhering to the surface of the spool 2 automatically falls off when the spool 2 moves upward, so that it cannot adhere to the surface. Therefore, the method is particularly suitable for the working conditions of powder materials, materials with poor fluidity and materials with certain adhesiveness. According to the technical scheme, the valve body 1 is driven by the straight-through type rocker shaft 8, so that the valve is large in drift diameter, strong in pressure resistance and high in feeding speed; the material is calculated according to the hourly conveying amount, so that the feeding time is saved, the conveying time is increased, the material conveying yield is greatly improved, and the method is particularly suitable for conveying materials with poor mobility and certain adhesiveness; the device has the obvious advantages of low cost, stable performance, long service life and the like; when the sealing ring 11 is excessively worn to generate air leakage, the air leakage can be recovered only by replacing the sealing ring 11, so that the maintenance is convenient and the maintenance cost is low.
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 invention, which are described in detail and are not to be construed as limiting the scope of the invention. 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 invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (5)
1. The pneumatic feeding valve for powder pneumatic conveying comprises a valve body (1), wherein a valve core (2) is arranged in the valve body (1), an upper flange (3) is connected to the top of the valve body (1), the bottom of the valve body (1) is connected with the edge of a through hole (12) of powder pneumatic conveying equipment through a lower flange (4), and the valve core (2) is closed or opened in the through hole (12), and the pneumatic feeding valve is characterized by further comprising a pneumatic actuator (5), an outer rocker arm (6), an inner rocker arm (7), a rocker arm shaft (8) and a universal guide shaft (9); the piston rod of the pneumatic actuator (5) is hinged with one end of the outer rocker arm (6), and the other end of the outer rocker arm (6) is connected with the rocker arm shaft (8); one end of the inner rocker arm (7) is connected with the rocker arm shaft (8), and the other end of the inner rocker arm (7) is hinged with the universal guide shaft (9); the universal guide shaft (9) is connected with the top of the valve core (2); the edge of the through hole (12) is provided with a sealing flange (10), a lower flange (4) at the bottom of the valve body (1) is fixedly connected with the sealing flange (10), and a sealing ring (11) is filled between the lower flange (4) and the sealing flange (10); an avoidance groove (13) is formed on the side part of the valve body (1), and the rocker shaft (8) is inserted into the avoidance groove (13) from the outer side of the valve body (1); the outer rocker arm (6) is positioned at the outer side of the valve body (1), and the outer rocker arm (6) is connected with a rocker arm shaft (8) at the outer side of the valve body (1) in a key slot mode; the inner rocker arm (7) is positioned in the valve body (1), and the inner rocker arm (7) is connected with a rocker arm shaft (8) in the valve body (1) through a key groove.
2. A pneumatic feed valve for pneumatic powder transport according to claim 1, characterized in that the rocker shaft (8) is sleeved with a return spring (14), the return spring (14) being inside the valve body (1); the side part of the inner rocker arm (7) is connected with a positioning head (15), one end of the return spring (14) is contacted with the positioning head (15), and the other end of the return spring (14) is contacted with the inner wall of the valve body (1).
3. The pneumatic feed valve for powder pneumatic conveying according to claim 1, wherein a mounting seat (16) is arranged on the outer side of the valve body (1), and the bottom of the pneumatic actuator (5) is connected with the mounting seat (16); the included angle between the piston rod of the pneumatic actuator (5) and the horizontal plane is 10-20 degrees.
4. Pneumatic feed valve for pneumatic powder transport according to claim 1, characterized in that the lower flange (4) at the bottom of the valve body (1) is connected with the sealing flange (10) by fastening screws (17).
5. A pneumatic feed valve for pneumatic powder transport according to claim 4, characterized in that the inner side of the sealing ring (11) cooperates with the outer wall of the valve core (2), the outer diameter of the valve core (2) being smaller than the inner diameter of the sealing flange (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110657631.0A CN113357379B (en) | 2021-06-13 | 2021-06-13 | Pneumatic feed valve for pneumatic powder conveying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110657631.0A CN113357379B (en) | 2021-06-13 | 2021-06-13 | Pneumatic feed valve for pneumatic powder conveying |
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| Publication Number | Publication Date |
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| CN113357379A CN113357379A (en) | 2021-09-07 |
| CN113357379B true CN113357379B (en) | 2023-05-12 |
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| CN202110657631.0A Active CN113357379B (en) | 2021-06-13 | 2021-06-13 | Pneumatic feed valve for pneumatic powder conveying |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES280734Y (en) * | 1984-07-27 | 1985-09-16 | Quimica Espacial, S.A. | PNEUMATIC REMOTE OPERATION VALVE. |
| CN2071137U (en) * | 1989-07-05 | 1991-02-13 | 徐忠琦 | Rocker arm type air pump |
| CN201588999U (en) * | 2009-12-17 | 2010-09-22 | 贵州省平坝县新峰机电设备有限公司 | Bell type valve |
| CN202132572U (en) * | 2011-07-21 | 2012-02-01 | 天津天成合力阀门有限公司 | Clamp hoop check valve |
| CN202346414U (en) * | 2011-10-27 | 2012-07-25 | 江苏欧卓输送设备科技有限公司 | Pneumatic conveying bell cover valve |
| CN204453826U (en) * | 2015-01-23 | 2015-07-08 | 上海隆麦机械设备工程有限公司 | Pneumatic material conveying system box-type cone valve |
| CN205001620U (en) * | 2015-09-02 | 2016-01-27 | 上海中沪阀门（集团）有限公司 | Pneumatic clock valve |
| CN205428730U (en) * | 2016-01-11 | 2016-08-03 | 南通亨特电器有限公司 | Travel switch |
| CN207364279U (en) * | 2017-06-23 | 2018-05-15 | 岳波 | A kind of conic ceramic inlet valve |
| CN208024921U (en) * | 2018-04-13 | 2018-10-30 | 吉永业 | A kind of anti-gas-leak Pneumatic bell valve |
| CN208221722U (en) * | 2018-05-09 | 2018-12-11 | 宁波极盛贸易有限公司 | Storehouse pumps inlet valve |
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