CN218565464U

CN218565464U - Improved double-core adjustable shrinkage cavity

Info

Publication number: CN218565464U
Application number: CN202221658930.2U
Authority: CN
Inventors: 丁宇; 刘家宝
Original assignee: Jiangsu Jingcheng Machinery Manufacturing Co ltd
Current assignee: Jiangsu Jingcheng Machinery Manufacturing Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2023-03-03
Anticipated expiration: 2032-06-29

Abstract

The utility model relates to a coal supply pipe shrinkage cavity technical field, concretely relates to adjustable shrinkage cavity of improved generation twin-core. The device comprises a shell, wherein two independent cavities are arranged in the shell, and an adjusting mechanism and a hole shrinking mechanism are respectively arranged in the two cavities; the adjusting mechanism comprises a screw rod, a hand wheel and a sliding block, the screw rod is arranged in one cavity, threads in opposite directions are arranged at two ends of the screw rod, the hand wheel is arranged at one end of the screw rod, and the sliding block is arranged on the screw rod through the threads respectively; the hole shrinkage mechanism comprises a core plate, and the core plate is respectively arranged on the sliding blocks; the inlet pipe and the outlet pipe are respectively arranged on two sides of the shell. Through setting up two independent cavities to can avoid the buggy to get into and cause piling up of buggy in the adjustment mechanism, avoid the buggy to the destruction of lead screw, make the lead screw can operate in a flexible way, normally use. And the two core plates can move outwards or inwards relatively, so that the air flow can always pass through the center of the shrinkage cavity, and the service life of the core plates is prolonged.

Description

Improved double-core adjustable shrinkage cavity

Technical Field

The utility model relates to a coal supply pipe shrinkage cavity technical field, concretely relates to adjustable shrinkage cavity of improved generation twin-core.

Background

An adjustable shrinkage cavity device is arranged in a coal supply pipeline of the power plant boiler and is used for adjusting the flow rate of the pulverized coal in time according to the load of the generator. At present, its structure of the shrinkage cavity device of prior art adjusts the lead screw and communicates with shrinkage cavity core plate cavity body, and in the use, adjustment mechanism can gather the buggy, often adjusts the long-pending powder of lead screw and leads to the core jam to make the lead screw operate dumb, influence the use. Although the core plate cavity and the adjusting mechanism are separated, the other adjustable shrinkage cavity structure needs to be connected and driven by a chain wheel or a gear, the structure is complex, the driving structure is easy to damage, and the overhaul is inconvenient. Meanwhile, one end of the existing core plate is opened and closed, and the air flow is not centered and deviates to one side when passing through the shrinkage cavity, so that one side of the pipeline is quickly abraded, and the service life is influenced to be short.

The above problems are problems that the art needs to solve.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an adjustable shrinkage cavity of improved generation twin-core to make its flexible operation, improve the life-span of using widely.

In order to solve the technical problem, the utility model provides a scheme is: an improved double-core adjustable shrinkage cavity comprises a shell, wherein two independent cavities are arranged in the shell, and an adjusting mechanism and a shrinkage cavity mechanism are respectively arranged in the two cavities;

the adjusting mechanism comprises a screw rod, a hand wheel and a sliding block, the screw rod is arranged in one cavity, threads in opposite directions are arranged at two ends of the screw rod, the hand wheel is arranged at one end of the screw rod, and the sliding block is arranged on the screw rod through the threads respectively;

the hole shrinkage mechanism comprises core plates, and the core plates are respectively arranged on the sliding blocks;

the inlet pipe and the outlet pipe are respectively arranged on two sides of the shell.

As a further improvement, the core plate is provided with a sealing seat in the clearance of the shell, and a sealing packing is arranged in the sealing seat.

As a further improvement of the utility model, a sliding groove for the core plate to move is arranged on the shell.

As a further improvement of the utility model, the sliding groove is provided with a blowing hole.

As a further improvement, the shell is provided with a scale plate, the core plate is provided with an indicator.

The utility model has the advantages that:

the utility model discloses rational in infrastructure, simple, the simple operation is through setting up two independent cavitys of installing adjustment mechanism and shrinkage cavity mechanism to can avoid the buggy to get into and cause piling up of buggy in the adjustment mechanism, avoid the buggy to the destruction of lead screw, make the lead screw can operate in a flexible way, normally use. And the hand wheel is manually rotated to drive the screw rod to integrally rotate, and because the directions of threads at two ends are opposite, when the screw rod rotates, the sliding blocks can simultaneously move in the same direction or in the opposite direction, so that the two core plates can be controlled to be simultaneously closed in the same direction or opened in the opposite direction. The core plates at the two ends can move simultaneously, so that the air flow can always pass through the center of the shrinkage cavity, the abrasion to one side of the pipeline is avoided, and the service life of the pipeline is prolonged.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a schematic view of the screw rod of the present invention;

fig. 4 is a schematic structural view of the core plate and the sliding groove of the present invention.

Reference numerals: 1. a housing; 2. a screw rod; 3. a hand wheel; 4. a slider; 5. a thread; 6. a core board; 7. an inlet pipe; 8. an outlet pipe; 9. a chute; 10. a purge hole; 11. a scale plate; 12. an indicator; 13. a sealing seat; 14. and (6) sealing the packing.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not limited to the present invention.

Referring to fig. 1, 2 and other 3, an embodiment of the present invention includes a housing 1, two independent cavities are provided inside the housing 1, and an adjusting mechanism and a hole shrinking mechanism are respectively provided inside the two cavities; the adjusting mechanism comprises a screw rod 2, a hand wheel 3 and a sliding block 4, the screw rod 2 is arranged in a cavity, threads 5 in opposite directions are arranged at two ends of the screw rod 2, the hand wheel 3 is arranged at one end of the screw rod 2, and the sliding block 4 is arranged on the screw rod 2 through the threads 5 respectively; the hole reducing mechanism comprises a core plate 6, and the core plates 6 are respectively arranged on the sliding blocks 4; an inlet pipe 7 and an outlet pipe 8 are respectively provided at both sides of the case 1.

In the use, through setting up two independent cavitys of installing adjustment mechanism and shrinkage cavity mechanism to can avoid the buggy to enter into and cause piling up of buggy in the adjustment mechanism, avoid the buggy to lead screw 2's destruction, make lead screw 2 to operate in a flexible way, normally use. And the hand wheel 3 is manually rotated to drive the screw rod 2 to integrally rotate, and because the directions of the threads 5 at the two ends are opposite, when the screw rod 2 rotates, the sliding blocks 4 can simultaneously move in the same direction or in the opposite direction, so that the two core plates 6 can be controlled to be simultaneously closed in the same direction or opened in the opposite direction. The core plates 6 at the two ends can move simultaneously, so that the air flow can always pass through the center of the shrinkage cavity, the abrasion to one side of the pipeline is avoided, and the service life of the pipeline is prolonged.

As shown in fig. 1, in order to prevent the inflow of the pulverized coal from the gap between the core plate 6 and the casing 1, a seal seat 13 is provided in the gap between the core plate 6 and the casing 1, and a seal packing 14 is provided in the seal seat 13. Under the sealing of the sealing packing 14, the pulverized coal cannot enter the cavity of the adjusting mechanism through the gap between the shell 1 and the core plate 6, so that the condition of powder accumulation in the cavity of the adjusting mechanism is avoided, and smooth adjustment of the equipment is ensured.

As shown in fig. 4, the housing 1 is provided with a slide groove 9 for moving the core plate 6. Through the spacing of spout 9, can make core 6 can move inside spout 9, improve accuracy and the stability that core 6 removed.

As shown in fig. 1, the chute 9 is provided with a purge hole 10. Usually, 4 blowing holes 10 are arranged, so that a user can blow the sliding groove 9 through the blowing holes 10 at proper time, and the situation that the powder accumulation core plate 6 is jammed at any position of the sliding groove 9 is guaranteed.

As shown in fig. 1, a scale plate 11 is disposed on the housing 1, and an indicator 12 is disposed on the core 6 corresponding to the scale plate 11. Through the cooperation of scale tablet 11 and indicator 12, indicator 12 moves along with core 6, and through the scale that indicator 12 pointed at scale tablet 11, and then can observe the size that core 6 opened and shut directly.

During actual work, the hand wheel 3 is rotated, so that the screw rod 2 rotates to drive the core plate 6 to move outwards or inwards, the adjustable shrinkage cavity flow area is changed accordingly, when the core plate 6 is moved, the scale of the indicator 12 on the scale plate 11 is changed, and therefore a user can achieve the effect of synchronously adjusting the core plate 6 through the indicator 12 and the scale plate 11.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

As the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientation or positional relationship is based on that shown in the drawings, merely for convenience in describing the invention and simplifying the description, and does not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

The appearances of the terms first, second, and third, if any, are used for descriptive purposes only and are not intended to be limiting or imply relative importance.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above only is the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent structures that are used in the content of the specification and the attached drawings of the present invention can be changed or directly or indirectly used in other related technical fields, and all the same principles are included in the patent protection scope of the present invention.

Claims

1. The improved double-core adjustable shrinkage cavity is characterized by comprising a shell (1), wherein two independent cavities are arranged in the shell (1), and an adjusting mechanism and a shrinkage cavity mechanism are respectively arranged in the two cavities;

the adjusting mechanism comprises a screw rod (2), a hand wheel (3) and a sliding block (4), the screw rod (2) is arranged in one cavity, threads (5) in opposite directions are arranged at two ends of the screw rod (2), the hand wheel (3) is arranged at one end of the screw rod (2), and the sliding block (4) is arranged on the screw rod (2) through the threads (5) respectively;

the hole shrinkage mechanism comprises core plates (6), and the core plates (6) are respectively arranged on the sliding blocks (4);

the inlet pipe (7) and the outlet pipe (8) are respectively arranged on two sides of the shell (1).

2. The improved double-core adjustable shrinkage cavity as claimed in claim 1, characterized in that a sealing seat (13) is arranged at the gap between the core plate (6) and the shell (1), and a sealing packing (14) is arranged in the sealing seat (13).

3. An improved twin core adjustable shrinkage cavity according to claim 1, characterised in that the housing (1) is provided with runners (9) for movement of the core (6).

4. An improved twin core adjustable shrinkage cavity according to claim 3, characterised in that the chute (9) is provided with purge holes (10).

5. An improved double-core adjustable shrinkage cavity according to claim 1, characterized in that a scale plate (11) is arranged on the shell (1), and an indicator (12) is arranged on the core plate (6) corresponding to the scale plate (11).