Flow control valve for coal cinder conveying chute

Abstract

The utility model provides a coal cinder conveying chute flow control valve which comprises a displacement driving mechanism connected with a coal cinder conveying chute and a flashboard connected with the displacement driving mechanism, a displacement opening is formed in the coal cinder conveying chute, and the flashboard penetrates through the displacement opening to enter the coal cinder conveying chute. The gate plate is of a wedge-shaped structure. The displacement driving mechanism drives the flashboard to move at the corner of the coal cinder conveying chute so as to control the flow of the coal cinder conveying chute, coal cinder can be effectively prevented from being accumulated on the flashboard through the wedge-shaped structural design of the flashboard, and therefore the control precision of the coal cinder conveying chute flow control valve on the coal cinder flow is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flow control valves, in particular to a flow control valve for a coal slag conveying chute. Background Art

[0002] When a high-placed coal slag conveying chute conveys coal slag to a low-placed coal slag conveying chute, a flow control valve needs to be set at its corner to adjust the flow rate. The corner of the coal slag conveying chute is where the two sections of the conveying chute are at an angle to each other. For the existing flow control valve, the motor controls the screw nut structure to drive the gate displacement and thereby change the cross-sectional area of ​​the chute, thereby controlling the coal slag flow rate.

[0003] The existing flow control valve has the following disadvantages: the gate of the existing flow control valve is a flat plate. When the coal slag falls in the chute, the coal slag will accumulate on the gate. When the coal slag chute is in a state of large flow, the impact is not significant, but when the coal slag chute is in a state of small flow, there will be an impact, and the smaller the flow, the greater the impact. The coal slag will accumulate on the gate during the falling process. After accumulating on the gate, due to the interaction between the coal slag, the coal slag will arch and bridge above the gate of the gate, resulting in a poor falling process or even inability to discharge the coal slag. After the coal slag piles up on the gate, when the flow needs to be increased, the coal slag accumulated on the gate will be brought into the chute during the displacement of the gate, causing a sudden increase in the flow. After the coal slag accumulates on the gate, the coal slag will also fall as the coal slag falls, resulting in inaccurate flow control accuracy. The above problems need to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a flow control valve for a coal slag conveying chute, which controls the flow of the coal slag conveying chute and can prevent the coal slag inside the coal slag conveying chute from accumulating on the gate, thereby improving the control accuracy of the coal slag conveying chute flow control valve on the coal slag flow.

[0005] According to the purpose of the present utility model, the present utility model provides a coal slag conveying chute flow control valve, including a displacement drive mechanism connected to the coal slag conveying chute and a gate plate connected to the displacement drive mechanism. The coal slag conveying chute is provided with a displacement port, and the gate plate passes through the displacement port and enters the interior of the coal slag conveying chute. The gate plate is a wedge-shaped structure.

[0006] Furthermore, the displacement drive mechanism includes a stepping motor and a driving screw, the driving screw is connected to the output shaft of the stepping motor, and the driving screw is threadedly connected to the gate.

[0007] Furthermore, a cover plate is slidably connected above the displacement port, and the cover plate is slidably connected to the wedge-shaped surface of the gate plate.

[0008] Furthermore, a sliding groove is provided on the wedge-shaped surface of the gate plate, and a pulley is provided on the cover plate.

[0009] Furthermore, a rubber sheet is provided at the bottom of the cover plate.

[0010] Furthermore, a brush is provided at the bottom of the cover plate.

[0011] Furthermore, an anti-accumulation component is provided inside the coal slag conveying chute.

[0012] Furthermore, the anti-accumulation component includes a connecting plate and an elastic member arranged at the corner of the coal slag conveying chute, the elastic member is fixed on the inner side of the connecting plate, and the elastic member is made of rubber material.

[0013] Furthermore, the coal slag conveying chute is also provided with an adjusting member, and the adjusting member is connected to the elastic member.

[0014] Furthermore, the adjusting member includes a connecting column and a screw sleeve arranged on the connecting column, the connecting column passes through the connecting plate, the screw sleeve is located on the outside of the connecting plate, and the screw sleeve is threadedly connected to the connecting column.

[0015] The technical solution of the utility model drives the gate plate to move at the corner of the coal slag conveying chute through a displacement driving mechanism to control the flow of the coal slag conveying chute. The wedge-shaped structure design of the gate plate can effectively prevent coal slag from accumulating on the gate plate, thereby improving the control accuracy of the coal slag conveying chute flow control valve on the coal slag flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0018] Figure 2 This is another structural diagram of an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the anti-accumulation component inside the coal slag conveying chute according to an embodiment of the present utility model.

[0021] In the figure: 1. cover plate; 2. gate plate; 3. displacement drive mechanism; 4. connecting plate; 5. elastic member; 6. connecting column; 7. screw sleeve; 8. slide groove; 9. pulley; 10. rubber sheet. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0025] Example 1

[0026] like Figure 1-Figure 4 As shown:

[0027] A flow control valve for a coal slag conveying chute comprises a displacement drive mechanism 3 connected to the coal slag conveying chute and a gate plate 2 connected to the displacement drive mechanism 3. A displacement port is provided on the coal slag conveying chute, and the gate plate 2 passes through the displacement port and enters the interior of the coal slag conveying chute. The flow rate of the coal slag conveying chute is controlled by the gate plate 2.

[0028] Specifically, in this embodiment, the displacement drive mechanism 3 includes a stepper motor and a drive screw. The drive screw is connected to the output shaft of the stepper motor, and the drive screw is threadedly connected to the gate plate 2. The stepper motor drives the drive screw to rotate, thereby driving the gate plate 2 to move. The stepper motor drive allows for remote control. Sometimes, the motor switch position is set relatively high, which is inconvenient and dangerous to operate manually. Remotely controlling the motor facilitates controlling the slag flow rate.

[0029] like Figure 3 As shown, to prevent coal slag from accumulating on the gate plate 2, the cross-section of the gate plate 2 is improved: the gate plate 2 has a wedge-shaped cross-section. When the cross-section is a wedge-shaped surface, coal slag cannot accumulate on the gate plate 2, and instead falls into the chute below along the wedge-shaped surface of the gate plate 2. Since the gate plate 2 will move at the coal slag conveying chute pipe mouth and the height of the gate plate 2 will change, in order to prevent a large amount of dust in the coal slag from escaping, a cover plate 1 is provided above the displacement port for sliding engagement. The cover plate 1 slides with the wedge-shaped surface of the gate plate 2. When the gate plate 2 is driven to move by the displacement drive mechanism 3, the cover plate 1 and the wedge-shaped surface of the gate plate 2 slide relative to each other.

[0030] When the gate plate 2 is driven by the displacement driving mechanism 3 to move, the wedge-shaped surfaces of the cover plate and the gate plate slide relative to each other. Combined with PLC programming design and host computer screen production, precise control of the coal slag flow rate in the chute is achieved.

[0031] Specifically, the structure between the gate plate 2 and the cover plate 1 is as follows: a concave chute 8 is provided on the wedge-shaped surface of the gate plate 2, a pulley 9 is provided on the cover plate 1, and a rubber sheet 10 is provided on the bottom surface of the cover plate 1. When the displacement drive mechanism 3 drives the gate plate 2 to move, it simultaneously drives the pulley 9 to slide in the chute 8, thereby driving the cover plate 1 to move above the displacement port. The rubber sheet 10 is pressed against the top of the wedge-shaped surface to reduce the escape of coal dust. A dust-proof brush strip can also be fixed on the outside of the rubber sheet 10 to further reduce dust escape.

[0032] Although the cross-sectional shape of the gate plate 2 is improved, in order to prevent the coal slag conveying chute from being in a low flow state or the coal slag from agglomerating after being damp, etc., in a low flow state, the gate plate 2 at the material outlet may arch, form a bridge, or even block the coal slag conveying chute, so further improvements are made:

[0033] like Figure 4As shown, an anti-accumulation component is provided inside the coal slag conveying chute, and the anti-accumulation component includes a connecting plate 4 arranged at the corner of the coal slag conveying chute, an elastic member 5 arranged inside the coal slag conveying chute, and an adjusting member connected to the elastic member 5. The elastic member 5 is made of rubber material, and the adjusting member is a connecting column 6 and a screw sleeve 7 arranged on the connecting column 6. The connecting column 6 passes through the connecting plate 4, and the screw sleeve 7 is located on the outside of the connecting plate 4.

[0034] like Figure 4 As shown, the arching situation formed in the coal slag conveying chute is mainly because the gap between the gate plate 2 and the inner wall of the coal slag conveying chute is small when the coal slag is in a low flow state. Due to the friction between the coal slag and the supporting force of the inner wall of the coal slag conveying chute, the coal slag arches and bridges on the inner wall of the coal slag conveying chute. Therefore, by setting the rubber material of the elastic member 5 in the coal slag conveying chute, the supporting force of the inner wall of the coal slag conveying chute on the coal slag is reduced, thereby reducing the arching and bridging situation. The position of the elastic member 5 can also be adjusted by changing the position of the screw sleeve 7 on the connecting column 6 to prevent the coal slag from arching and bridging inside the chute. There is another way to use the anti-accumulation component. When arching and bridging occur, the connecting column 6 is manually pulled to drive the elastic member 5 to move, thereby temporarily increasing the gate cross-sectional area, which can not only prevent arching and bridging but also prevent blockage.

[0035] The utility model is used for controlling the flow of the coal slag conveying chute, and can also prevent the coal slag inside the coal slag conveying chute from accumulating on the gate, thereby improving the control accuracy of the coal slag conveying chute flow control valve on the coal slag flow.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flow control valve for a coal slag conveying chute, characterized in that: It includes a displacement drive mechanism connected to the coal slag conveying chute and a gate plate connected to the displacement drive mechanism, the coal slag conveying chute is provided with a displacement port, the gate plate passes through the displacement port and enters the interior of the coal slag conveying chute, and the gate plate is a wedge-shaped structure; the interior of the coal slag conveying chute is provided with an anti-accumulation component; the anti-accumulation component includes a connecting plate and an elastic member arranged at the corner of the coal slag conveying chute, the elastic member is fixed on the inner side of the connecting plate, and the elastic member is made of rubber material; the coal slag conveying chute is also provided with an adjusting member, and the adjusting member is connected to the elastic member.

2. The flow control valve for the slag conveying chute according to claim 1, characterized in that: The displacement driving mechanism includes a stepping motor and a driving screw, wherein the driving screw is connected to the output shaft of the stepping motor, and the driving screw is threadedly connected to the gate.

3. The flow control valve for the slag conveying chute according to claim 1, characterized in that: A cover plate is slidably connected above the displacement port, and the cover plate is slidably connected to the wedge-shaped surface of the gate plate.

4. The flow control valve for the slag conveying chute according to claim 3, characterized in that: A sliding groove is provided on the wedge-shaped surface of the gate plate, and a pulley is provided on the cover plate.

5. The flow control valve for the slag conveying chute according to claim 3, characterized in that: A rubber sheet is provided at the bottom of the cover plate.

6. The flow control valve for the slag conveying chute according to claim 3, characterized in that: A brush is also provided on the bottom of the cover plate.

7. The flow control valve for the slag conveying chute according to claim 1, characterized in that: The adjusting member includes a connecting column and a screw sleeve arranged on the connecting column, the connecting column passes through the connecting plate, the screw sleeve is located on the outer side of the connecting plate, and the screw sleeve is threadedly connected to the connecting column.

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