CN111256481A

CN111256481A - New-type wind accuse flow valve and bed of combing

Info

Publication number: CN111256481A
Application number: CN202010112575.8A
Authority: CN
Inventors: 胡海兵; 许广丰; 钱旺龙; 苑明华; 贾小朋
Original assignee: Nanjing C Hope Cement Engineering Group Co Ltd
Current assignee: Nanjing C Hope Cement Engineering Group Co Ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2020-06-09
Also published as: WO2021168932A1

Abstract

The invention discloses a novel air control flow valve and a grate bed. This air control flow valve includes the valve body, the downside of valve body is the air intake, and its upper side is the air outlet, the internal diameter of valve body reduces along air intake to air outlet direction gradually, be fixed with air intake center pin fixed cross beam on the valve body of air intake side, be fixed with air outlet center pin fixed cross beam on the valve body of air outlet side, be fixed with the center pin between air intake center pin fixed cross beam and the air outlet center pin fixed cross beam, center pin outside sliding connection has the case, the external diameter of case is less than the internal diameter of air outlet. The invention has the advantages of simple structure, convenient manufacture and installation, flexible and smooth adjustment of the valve core, small abrasion, strong adaptability to the external environment, good butt joint and exchange with the existing equipment and the like.

Description

New-type wind accuse flow valve and bed of combing

Technical Field

The invention relates to the field of cement manufacturing equipment, in particular to a novel air control flow valve and a grate bed.

Background

The cooler is one of main machines and key equipment applied to the cement building material industry and the metallurgical industry, and plays a main role in cooling, conveying, crushing, system heat recovery and the like of cement production clinker. Air is used as a medium to cool the clinker, and the cooling effect of the clinker directly influences the crystallization characteristic of clinker particles and the heat value of heat exchange recovery. The cooling effect is good, the crystalline grains of the clinker are fine and have more micro cracks, and the cement grinding and the cement strength improvement are facilitated. And the corresponding heat exchange recovery heat value is high, and the temperature of the secondary air and the tertiary air is ensured, so that the operation efficiency of the kiln is improved, and the economic cost can be greatly reduced. The cooler develops into a structural form of a fifth generation stepping horizontal bed, the cooling air supply of the grate plates adopts a concentrated air supply form, and the ventilation control flow valve controls the ventilation air quantity of each grate plate in each area. The main structure of the existing wind control valve is of a pendulum hammer valve clack type and a spring plate type, but the main structure of the existing wind control valve has the problems of insensitive reaction, poor actual use effect and the like, so that the clinker in a certain block area on a grate bed is not uniformly cooled, and the discharged material has the phenomena of red material and the like. Therefore, whether the air control valve can flexibly adjust the ventilation quantity of each grate plate according to the grate load and the air chamber load can greatly influence the cooling effect of the discharged clinker.

Disclosure of Invention

The invention aims to provide a novel air control flow valve and a grate bed aiming at the defects in the prior art.

In order to achieve the purpose, the invention provides a novel air control flow valve which comprises a valve body, wherein an air inlet is formed in the lower side of the valve body, an air outlet is formed in the upper side of the valve body, the inner diameter of the valve body is gradually reduced along the direction from the air inlet to the air outlet, an air inlet central shaft fixing cross beam is fixed on the valve body on the air inlet side, an air outlet central shaft fixing cross beam is fixed on the valve body on the air outlet side, a central shaft is fixed between the air inlet central shaft fixing cross beam and the air outlet central shaft fixing cross beam, a valve core is connected to the outer side of the central shaft in a sliding mode, and.

Furthermore, the inner sides of the air inlet central shaft fixing cross beam and the air outlet central shaft fixing cross beam are respectively provided with a first magnet, a second magnet is arranged on the valve core at a position opposite to the first magnet, and one side of the second magnet, which has the same polarity as the first magnet, is arranged oppositely.

Furthermore, the first magnet and the second magnet are respectively and fixedly arranged at the middle parts of the air inlet central shaft fixing cross beam, the air outlet central shaft fixing cross beam and the valve core, and the first magnet and the second magnet are in annular shapes and are sleeved outside the central shaft.

Furthermore, the first magnet and the second magnet are neodymium iron boron magnets.

Furthermore, the outer side of the first magnet is provided with a limiting ring, the first magnet and the limiting ring are respectively bonded on the inner sides of the air inlet central shaft fixing cross beam and the air outlet central shaft fixing cross beam, and the second magnet comprises two magnets which are respectively bonded on the upper side and the lower side of the valve core.

Further, the air inlet center shaft fixing cross beam and the air outlet center shaft fixing cross beam are respectively welded on the valve body, the upper end of the center shaft is welded and fixed with the air outlet center shaft fixing cross beam, and the lower end of the center shaft is fixedly connected with the air inlet center shaft fixing cross beam through bolts.

Furthermore, a fixed support is fixed in the middle of the outer side of the valve body.

Furthermore, the valve core is in a round table shape, and a plurality of ventilation balance holes are formed in the middle of the valve core.

Further, the ventilation balance holes comprise 4 to 8 and are arranged in a circular array at the center of the valve core.

In a second aspect, the invention also provides a grate bed, which comprises a module main beam and a plurality of grate plates arranged on the upper side of the module main beam, wherein the module main beam on the lower side of each grate plate is provided with the novel air control flow valve.

Has the advantages that: the invention has the advantages of simple structure, convenient manufacture and installation, flexible and smooth adjustment of the valve core, small abrasion, strong adaptability to the external environment, good butt joint and exchange with the existing equipment and the like.

Drawings

FIG. 1 is a schematic perspective view of a novel air control flow valve according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a novel air control flow valve of an embodiment of the present invention;

FIG. 3 is a schematic view of a novel air control flow valve according to an embodiment of the present invention in a maximum air volume state;

FIG. 4 is a schematic view of a novel air control flow valve in a minimum air volume state according to an embodiment of the invention;

FIG. 5 is a partial structural view of the grate bed according to the embodiment of the present invention.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 4, the embodiment of the invention provides a novel air control flow valve, which comprises a valve body 1, an air inlet 2 is arranged at the lower side of the valve body 1, the upper side of the valve body is provided with an air outlet 3, the valve body 1 is a reducing pipe, specifically, the inner diameter of the valve body 1 is gradually reduced along the direction from the air inlet 2 to the air outlet 3, an air inlet central shaft fixing beam 4 is fixed on the valve body 1 at the side of the air inlet 2, an air outlet central shaft fixing beam 5 is fixed on the valve body 1 at the side of the air outlet 3, a central shaft 6 is fixed between the air inlet central shaft fixing beam 4 and the air outlet central shaft fixing beam 5, a valve core 7 is connected to the outer side of the central shaft 6 in a sliding mode, the valve core 7 can reciprocate up and down on the central shaft 6 along the axis, the up-and-down reciprocating motion changes the size of a ventilation area between the valve body 1 and the valve core 7, and therefore the size of cooling air volume is adjusted in a correcting mode. When case 7 is located the bottom, area of ventilation is the biggest, and when case 7 was located the top, area of ventilation was the minimum, and the external diameter of case 7 is less than the internal diameter of air outlet 3 to when guaranteeing that case 7 was located the top, guarantee to have minimum air volume. The central shaft 6 is preferably made of austenitic stainless steel, and has no magnetic permeability, so that a balanced gap exists between the valve core 7 and the central shaft 6. The whole body of the valve core 7 is galvanized and passivated after being manufactured, the smoothness is better, the weight of the valve core 7 is relatively lighter, the friction force borne by the valve core 7 when the central shaft 6 moves up and down can be ignored relative to loads under the grate and the like, and the valve core 7 can flexibly move up and down under related loads, so that the size of a ventilation area is regulated and controlled until the ventilation area is balanced.

In the embodiment of the invention, the inner sides of the air inlet central shaft fixing beam 4 and the air outlet central shaft fixing beam 5 are respectively provided with a first magnet 8, a second magnet 9 is arranged on the valve core 7 at a position opposite to the first magnet 8, and the first magnet 8 and the second magnet 9 preferably adopt neodymium iron boron magnets. Second magnet 9 sets up with the same one side of first magnet 8 polarity relatively to when case 7 was in the bottom and the top position of center pin 6, produce repulsion between first magnet 8 and the second magnet 9, guarantee that case 7 does not block with center pin 6 etc. and bump when two kinds of extreme positions, make case 7 action more sensitive smooth and easy. As a preferred embodiment, the first magnet 8 and the second magnet 9 are respectively and fixedly disposed at the middle portions of the air inlet center shaft fixing beam 4, the air outlet center shaft fixing beam 5 and the valve core 7, and the first magnet 8 and the second magnet 9 are disposed in a ring shape and are both sleeved outside the center shaft 6.

In order to facilitate the first magnet 8 and the second magnet 9 to be fixed on the air inlet central shaft fixing beam 4, the air outlet central shaft fixing beam 5 and the valve core 7 respectively, the limiting ring 10 is arranged on the outer side of the first magnet 8, and the first magnet 8 and the limiting ring 10 are well paired and then fixed on the air inlet central shaft fixing beam 4 and the air outlet central shaft fixing beam 5 by strong glue. The two second magnets 9 are preferably adopted, and the two second magnets 9 are respectively bonded with the upper side and the lower side of the valve core 7 by using super glue.

According to the embodiment of the invention, the air inlet central shaft fixing beam 4 and the air outlet central shaft fixing beam 5 are preferably welded on the valve body 1 respectively, the upper end of the central shaft 6 and the air outlet central shaft fixing beam 5 are also preferably welded and fixed, and the lower end of the central shaft 6 and the air inlet central shaft fixing beam 4 are preferably fixed through bolts. Specifically, a threaded hole can be formed in the center of the lower end of the central shaft 6, and a bolt 11 is adopted to penetrate through the air inlet central shaft fixing cross beam 4 and be screwed into the threaded hole of the central shaft 6. In order to install the device on the grate bed, a fixed support 12 is fixed in the middle of the outer side of the valve body 1, a fixed hole can be formed in the fixed support 12, and the fixed support 12 can be fixed on the grate bed through a bolt.

The valve core 7 of the embodiment of the invention is preferably circular truncated cone-shaped in appearance, the bevel edge of the outer side of the valve core is matched with the inner shape of the valve body 1, a plurality of ventilation balance holes 13 are arranged in the middle of the valve core 7, the number of the ventilation balance holes 13 is 4-8, preferably 6, and the ventilation balance holes 13 are preferably arranged in a circular array around the center of the valve core 7, so that the ventilation and the stress are uniform. When the material loading layer of the grate plate changes, the air volume can be increased through the ventilation balance holes 13 to instantaneously change the load of the upper end and the lower end of the valve core, and the upper position and the lower position of the valve core 7 are adjusted in time, so that the ventilation air volume is corrected.

As shown in fig. 5, based on the above embodiments, it can be understood by those skilled in the art that the invention also provides a grate bed in another aspect, which comprises a module main beam 14 and a plurality of grate plates 15 arranged on the upper side of the module main beam 14, wherein the module main beam 14 on the lower side of each grate plate 15 is provided with one of the above-mentioned novel air control flow valves.

The working principle of the invention is as follows:

each grid plate 15 is independently provided with an air control flow valve, each grid plate 15, the module main beam 14 and the air control flow valve form an independent small space, and each air chamber integrally forms a large space. When the air flow control valve normally works, when the material powder on the grate plate 15 is large or the material layer is thick, the ventilation resistance of the grate plate 15 is large, and the sum of the load on the upper part of the valve core 7 (namely the load of the single small space under the grate plate) and the self weight of the valve core is larger than the sum of the repulsive force between the load of the whole air chamber and the magnet, the valve core 7 moves downwards, the ventilation area between the valve body 1 and the valve core 7 is increased, the air flow is increased until the upper load and the lower load are balanced, and the optimal air flow. On the contrary, when the material on the grid plate 15 is less or the particle crystal is larger, the ventilation resistance of the grid plate 15 is small, and the sum of the load on the upper part of the valve core 7 and the self weight of the valve core 7 is less than the sum of the load of the whole air chamber and the repulsive force between the magnets, the valve core 7 moves upwards, the ventilation area between the valve body 1 and the valve core 7 is reduced, and the air volume is reduced until the upper load and the lower load are balanced.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described are within the prior art or common general knowledge to those of ordinary skill in the art. Without departing from the principle of the invention, several improvements and modifications can be made, and these improvements and modifications should also be construed as the scope of the invention.

Claims

1. The utility model provides a new-type air control flow valve, its characterized in that, includes the valve body, the downside of valve body is the air intake, and its upper side is the air outlet, the internal diameter of valve body reduces along air intake to air outlet direction gradually, be fixed with air intake center pin fixed cross beam on the valve body of air intake side, be fixed with air outlet center pin fixed cross beam on the valve body of air outlet side, be fixed with the center pin between air intake center pin fixed cross beam and the air outlet center pin fixed cross beam, center pin outside sliding connection has the case, the external diameter of case is less than the internal diameter of air outlet.

2. The new-type air control flow valve according to claim 1, characterized in that the inner sides of the air inlet center shaft fixing beam and the air outlet center shaft fixing beam are respectively provided with a first magnet, the valve core is provided with a second magnet at a position opposite to the first magnet, and the second magnet is arranged opposite to one side of the first magnet with the same polarity.

3. The novel air control flow valve according to claim 2, characterized in that the first magnet and the second magnet are respectively and fixedly arranged in the middle of the air inlet central shaft fixing beam, the air outlet central shaft fixing beam and the valve core, and the first magnet and the second magnet are in ring shapes and are both sleeved outside the central shaft.

4. The new pneumatic flow valve of claim 2 wherein the first and second magnets are neodymium iron boron magnets.

5. The new-type air control flow valve according to claim 3, characterized in that the first magnet is provided with a limiting ring at the outer side, the first magnet and the limiting ring are respectively bonded at the inner sides of the air inlet central shaft fixing beam and the air outlet central shaft fixing beam, and the second magnet comprises two magnets which are respectively bonded at the upper side and the lower side of the valve core.

6. The novel air control flow valve according to claim 1, characterized in that the air inlet center shaft fixing beam and the air outlet center shaft fixing beam are respectively welded on the valve body, the upper end of the center shaft is welded and fixed with the air outlet center shaft fixing beam, and the lower end of the center shaft is fixed with the air inlet center shaft fixing beam through bolts.

7. The new pneumatic flow valve as claimed in claim 1, wherein a fixed bracket is fixed to the middle of the outside of the valve body.

8. The novel air control flow valve according to claim 1, characterized in that the valve core is in the shape of a circular truncated cone, and a plurality of ventilation balance holes are arranged in the middle of the valve core.

9. The new pneumatic flow valve of claim 8 where the vent balancing holes comprise 4 to 8 and are arranged in a circular array centered on the spool.

10. A grate bed comprises a module main beam and a plurality of grate plates arranged on the upper side of the module main beam, and is characterized in that a novel air control flow valve according to any one of claims 1 to 9 is arranged on the module main beam on the lower side of each grate plate.