Aperture type pulverized coal adjusting device

Abstract

According to the aperture type pulverized coal adjusting device, by arranging the adjustable medium through hole in the aperture adjuster, accurate control over the flow of pulverized coal can be achieved, the driving device is started, the driving device drives the aperture adjuster through the driving rod, the size of the adjustable medium through hole can be flexibly adjusted, and therefore the adjusting efficiency is improved. Pulverized coal and dust are jetted forwards through the middle, the problem that the pulverized coal and the dust rush to a valve body or a pipe wall to be abraded during flow adjustment is solved, and meanwhile the flow adjustment function of the pulverized coal and the dust is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal powder regulation, in particular to an aperture type coal powder regulating device. Background Art

[0002] The grating type pulverized coal regulating device plays a vital role in the blast furnace pulverized coal injection system and pulverized coal gasification. This grating type pulverized coal regulating device is installed between the blast furnace pulverized coal injection system, the pulverized coal feeding tank and the gasifier burner. It is used to accurately control the pulverized coal flow rate. It is a key device for accurately controlling the pulverized coal injection flow rate of the blast furnace and accurately controlling the oxygen-coal ratio of the gasifier. Its performance is directly related to whether the gasifier can achieve long-term safe and stable operation. In the prior art, the regulating valve has a structural feature that determines that the valve core changes the airflow direction during the adjustment process. The particles, dust, pulverized coal and other particulates in the airflow cause serious erosion and wear on the gas delivery pipeline and the regulating valve body, which seriously affects the service life of the entire system and increases the labor intensity and production cost of maintenance personnel.

[0003] At present, most of the blast furnace coal powder injection systems use V-type ball valves for cutting and regulation. However, due to the structural characteristics of the V-type ball valve, the airflow direction is guided by the valve core during the regulation process, which causes serious wear on the pipeline and valve body. For example, the utility model patent with application number CN202221553792.1 discloses a dual-axis coal powder regulating valve, the utility model patent with application number CN201520591850.3 discloses a coal powder regulating valve, and the utility model patent with application number CN202320149259.7 discloses a coal powder regulating valve; among them, the utility model patent with application number CN202221553792.1 discloses a dual-axis coal powder regulating valve, which is provided with two gears on the valve stem at one end of the front connecting block in the inspection frame, so that the gears are meshed with each other, and the valve stem with gears A valve stem is fixedly connected to the output shaft of the reducer, and the flow of pulverized coal entering the gasifier is adjusted by rotating the gear driven by the reducer; however, since the inspection frame is open, dust and other particulate matter can easily enter the inspection frame and fall on the meshing position of the two gears, causing the gears to get stuck and unable to drive the valve stem to rotate, thereby failing to achieve the effect of adjusting the flow of pulverized coal entering the gasifier. At the same time, the utility model uses welding at the contact position of the support frame and the pipeline to achieve a fixed connection between the support frame and the pipeline. This method is complicated to operate and can easily cause the pipeline to deform when the pipeline wall is thin, making it impossible to correctly install the pulverized coal regulating valve in the accurate position. Summary of the invention

[0004] In view of this, the utility model provides an aperture type coal powder regulating device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An aperture type coal powder adjustment device comprises an aperture adjustment device, a driving device and a driving rod, wherein the driving device cooperates with the aperture adjustment device to drive through the driving rod, the aperture adjustment device comprises a valve body and an aperture adjuster, an adjustable medium through hole is provided on the aperture adjuster, the driving rod cooperates with the aperture adjuster to drive, and the driving device drives the aperture adjuster through the driving rod to adjust the aperture of the adjustable medium through hole.

[0007] Preferably, the aperture adjuster includes a drive disk, an aperture adjustment assembly and a guide, the aperture adjustment assembly includes a plurality of aperture adjustment blocks, the aperture adjustment blocks are movably arranged on the guide, the drive rod is arranged in the valve body and meshes with the drive disk for transmission, the drive rod drives the drive disk to rotate, and the drive disk drives the aperture adjustment blocks to move on the guide during rotation.

[0008] Preferably, the aperture adjustment blocks are arranged to form a circle, and adjacent aperture adjustment blocks are slidably fitted together. Guide grooves and guide bosses are respectively provided on both sides of the aperture adjustment blocks, and the guide grooves and guide bosses are respectively slidably fitted with the guide bosses and guide grooves on adjacent aperture adjustment blocks.

[0009] Preferably, a guide pin is provided on the aperture adjustment block, a driving guide groove for inserting the guide pin is provided on the driving disk, one end of the guide pin extends into the driving guide groove and is connected to the driving disk, and the other end of the guide pin passes through the aperture adjustment block and is connected to the guide.

[0010] Preferably, the guide is provided with a positioning guide groove, a mounting hole and a guide circulation hole. The guide circulation hole is a circular hole structure arranged in the center of the guide. A plurality of positioning guide grooves are arranged in an arc-shaped structure. The positioning guide grooves are arranged at equal intervals on the outside of the guide circulation hole with the center of the guide circulation hole as the center. One end of the guide pin passes through the aperture adjustment block and extends into the positioning guide groove to be connected with the guide. The drive disk drives the aperture adjustment block to move along the positioning guide groove through the guide pin.

[0011] Preferably, a driving disk circulation hole is provided on the driving disk, and the driving disk circulation hole is arranged in the center of the driving disk. A plurality of driving guide grooves are arranged in arc-shaped strips, and the driving guide grooves are evenly spaced and distributed on the outside of the driving disk circulation hole with the center of the driving disk circulation hole as the center.

[0012] Preferably, the driving disk is arranged in a disc structure, a gear ring is arranged on the outer ring of the driving disk, a spiral ring is arranged on the driving rod, and the gear ring on the driving rod cooperates with the spiral ring on the driving rod for transmission.

[0013] Preferably, the valve body comprises a left valve body and a right valve body, and a wear-resistant layer is provided on the inner sides of the left valve body and the right valve body.

[0014] The beneficial effect of the utility model is that by setting an adjustable medium through hole on the aperture adjuster, the coal powder flow rate can be accurately controlled, and the driving device is started so that the driving device drives the aperture adjuster through the driving rod, so that the size of the adjustable medium through hole can be flexibly adjusted to adapt to different coal powder flow requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is the front view of the utility model;

[0018] Figure 3 For this utility model Figure 2 Cross-sectional view of the middle AA part;

[0019] Figure 4 This is a cross-sectional view of the grating regulator of the utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the guide of the utility model;

[0021] Figure 6 This is the front view of the guide of the utility model;

[0022] Figure 7 This is a schematic diagram of the three-dimensional structure of the grating adjustment block assembly of the utility model when it is closed;

[0023] Figure 8 This is a schematic diagram of the three-dimensional structure of the grating adjustment block of the utility model;

[0024] Fig. 9 This is a three-dimensional structural schematic diagram of the utility model grating adjustment block assembly when it is half open;

[0025] Fig.10 This is a schematic diagram of the three-dimensional structure of the utility model when the grating adjustment block assembly is fully opened;

[0026] Fig.11 This is a cross-sectional view of the drive disc of the utility model;

[0027] Fig.12 It is a schematic diagram of the three-dimensional structure of the drive disk of the utility model. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model will be further described below in conjunction with the accompanying drawings of the specification.

[0030] The utility model provides the following technical solutions:

[0031] As attached Figure 1-12 As shown, the utility model discloses an aperture type coal powder regulating device, including an aperture regulating device 1, a driving device 2 and a driving rod 9, wherein the driving device 2 is connected to the aperture regulating device 1 through the driving rod 9, and the aperture regulating device 1 includes a valve body 3 and an aperture regulator 4, wherein an adjustable medium through hole 10 is provided on the aperture regulator 4, and the driving rod 9 is connected to the aperture regulator 4, and the driving device 2 drives the adjustable medium through hole 10 on the aperture regulator 4 through the driving rod 9 to adjust the aperture. Specifically, in the present design, by setting the adjustable medium through hole 10 on the aperture regulator 4, the coal powder flow rate can be precisely controlled, and the driving device 2 is started so that the driving device 2 drives the aperture regulator 4 through the driving rod 9, so that the size of the adjustable medium through hole 10 can be flexibly adjusted to meet different coal powder flow rate requirements.

[0032] As attached Figure 1-12 As shown, the utility model discloses an aperture type coal powder adjustment device, a driving device 2 and a driving rod 9, wherein the driving device 2 cooperates with the aperture adjustment device 1 to drive through the driving rod 9, the aperture adjustment device 1 comprises a valve body 3 and an aperture adjuster 4, an adjustable medium through hole 10 is provided on the aperture adjuster 4, the driving rod 9 cooperates with the aperture adjuster 4 to drive, and the driving device 2 drives the aperture adjuster 4 through the driving rod 9 so that the adjustable medium through hole 10 can be adjusted to enlarge and reduce the aperture.

[0033] Further, the aperture adjuster 4 includes a driving disk 6, an aperture adjustment assembly 7 and a guide 8, the aperture adjustment assembly 7 includes a plurality of aperture adjustment blocks 701, the aperture adjustment blocks 701 are movably arranged on the guide 8, the driving rod 9 is arranged in the left valve body 301 and meshes with the driving disk 6 for transmission, the driving rod 9 drives the driving disk 6 to rotate, and the aperture adjustment blocks 701 are driven to move on the guide 8 during the rotation of the driving disk 6. The aperture adjustment blocks 701 slide inwards and outwards as the driving rod 9 drives the driving disk 6 to rotate forwards and backwards, the aperture adjustment blocks 701 slide inwards to reduce the medium through hole 10, thereby achieving the purpose of adjusting the inward diameter of the middle part to reduce the medium flow area and reduce the flow rate, and vice versa, sliding outwards to enlarge the medium through hole 10, thereby achieving the purpose of adjusting the outward expansion of the middle part to enlarge the medium flow area and increase the pneumatic flow rate, so that the medium in front of the valve is always ejected from the center of the valve cavity to the rear of the valve, reducing the wear on the rear of the valve and the inner wall of the pipeline.

[0034] Furthermore, the aperture adjustment blocks 701 are arranged to form a circle, and adjacent aperture adjustment blocks 701 are slidably matched with each other. Guide grooves 704 and guide bosses 705 are respectively provided on both sides of the aperture adjustment block 701. The guide grooves 704 and guide bosses 705 are respectively slidably matched with the guide bosses 705 and guide grooves 704 on adjacent aperture adjustment blocks 701, so that several aperture adjustment blocks 701 can achieve the purpose of synchronously matching internal and external displacement.

[0035] Furthermore, a guide pin 702 is provided on the aperture adjustment block 701, and a driving guide groove 601 for inserting the guide pin 702 is provided on the driving disk 6, one end of the guide pin 702 extends into the driving guide groove 601 and is connected to the driving disk 6, and the other end of the guide pin 702 passes through the aperture adjustment block 701 and is connected to the guide 8.

[0036] Furthermore, the guide 8 is provided with a positioning guide groove 803, a mounting hole 802 and a guide circulation hole 804. The guide circulation hole 804 is a circular hole structure arranged at the center of the guide 8. A plurality of positioning guide grooves 803 are arranged in an arc structure. The positioning guide grooves 803 are arranged at equal intervals on the outside of the guide circulation hole 804 with the center of the guide circulation hole 804 as the center. One end of the guide pin 702 passes through the aperture adjustment block 701 and extends into the positioning guide groove 803 to be connected to the guide 8. The drive disk 6 drives the aperture adjustment block 701 to move along the positioning guide groove 803 through the guide pin 702.

[0037] Furthermore, a driving disk circulation hole 602 is provided on the driving disk 6, and the driving disk circulation hole 602 is arranged at the center of the driving disk 6. A plurality of driving guide grooves 601 are arranged in the shape of arc-shaped long strips. The driving guide grooves 601 are evenly spaced and distributed on the outside of the driving disk circulation hole 602 with the center of the driving disk circulation hole 602 as the center. The positioning guide grooves 803 on the guide 8 together limit the movement law of the guide pin 702 on the aperture adjustment block 701.

[0038] Further, the driving disc 6 is provided in a disc structure, a gear ring is provided on the outer ring of the driving disc 6, a spiral ring is provided on the driving rod 9, and the gear ring on the driving rod 9 is meshed with the spiral ring on the driving rod 9 for transmission. The driving rod 9 can be a worm, a rack, or a screw, the outer ring of the driving disc 6 can be a worm gear, or a gear ring, and the driving device can be an electric device, a cylinder or an oil cylinder as the driving device, or a manual device as the driving device.

[0039] Furthermore, the valve body 3 includes a left valve body 301 and a right valve body 302 , and a wear-resistant layer 303 is disposed on the inner side of the left valve body 301 and the right valve body 302 to improve the wear resistance thereof.

[0040] Furthermore, the aperture adjuster 4 includes a driving disk 6, an aperture adjustment assembly 7 and a guide 8, the aperture adjustment assembly 7 includes a plurality of aperture adjustment blocks 701, the aperture adjustment blocks 701 are movably arranged on the guide 8, one end of the driving rod 9 is connected to the driving disk 6, the driving rod 9 drives the driving disk 6 to rotate, and the driving disk 6 drives the aperture adjustment block 701 to move on the guide 8 during the rotation. Specifically, in the present embodiment, the aperture adjustment block 701 has a pointed end and a curved end. When the adjustable medium through hole 10 is in a completely closed state, all the aperture adjustment blocks 701 located on the guide 8 are driven by the driving disk 6 to move toward the center of the guide 8, so that the pointed ends on the aperture adjustment block 701 gradually come together and achieve a perfect fit to achieve sealing; when the adjustable medium through hole 10 needs to be opened for the coal powder to pass through, the driving disk 6 rotates in the opposite direction, and then drives the aperture adjustment block 701 to move on the guide 8 toward a position away from the center of the guide 8, thereby opening the adjustable medium through hole 10. The movement of the aperture adjustment block 701 can change the aperture size of the adjustable medium through hole 10, thereby achieving precise control of the coal powder flow rate.

[0041] Further, the aperture adjustment blocks 701 are arranged to form a circle, and the adjacent aperture adjustment blocks 701 are slidably matched with each other. The two sides of the aperture adjustment block 701 are respectively provided with a guide groove 704 and a guide boss 705, and the guide groove 704 and the guide boss 705 are respectively slidably matched with the guide boss 705 and the guide groove 704 on the adjacent aperture adjustment block 701. Specifically, in this embodiment, the shapes of the guide groove 704 and the guide boss 705 are correspondingly set to be T-shaped. After the T-shaped guide boss 705 is inserted into the T-shaped guide groove 704, it can not only play a guiding role, but also prevent the aperture adjustment block 701 from loosening in the left and right directions during the sliding process, thereby ensuring stability during the sliding process; in other embodiments, the shapes of the guide groove 704 and the guide boss 705 are correspondingly set to be V-shaped.

[0042] Further, the aperture adjustment block 701 is provided with a guide pin 702, and the drive disk 6 is provided with a drive guide groove 601 for inserting the guide pin 702. One end of the guide pin 702 extends into the drive guide groove 601 and is connected to the drive disk 6, and the other end of the guide pin 702 passes through the aperture adjustment block 701 and is connected to the guide 8. Specifically, in this embodiment, the guide pin 702 is designed to ensure that the movement path of the aperture adjustment block 701 on the guide 8 is accurate. At the same time, the drive disk 6 drives the guide pin 702 through the drive guide groove 601, thereby realizing precise control of the aperture adjustment block 701. One end of the guide pin 702 extends into the driving guide groove 601 to form a fixed connection with the driving disk 6, and the other end passes through the aperture adjustment block 701 and is connected to the guide 8. In this way, when the driving disk 6 rotates, the guide pin 702 will drive the aperture adjustment block 701 to move on the guide 8 under the guidance of the driving guide groove 601, thereby realizing precise control of the aperture size of the adjustable medium through hole 10.

[0043] Further, the guide 8 is provided with a positioning guide groove 803, a mounting hole 802 and a guide flow hole 804, the guide flow hole 804 is arranged in the center of the guide 8 in a circular hole structure, a plurality of positioning guide grooves 803 are arranged in an arc structure, and the positioning guide grooves 803 are arranged at equal intervals on the outside of the guide flow hole 804 with the center of the circle of the guide flow hole 804 as the center, one end of the guide pin 702 passes through the aperture adjustment block 701 and extends into the positioning guide groove 803 to connect with the guide 8, and the driving disk 6 drives the aperture adjustment block 701 to move along the positioning guide groove 803 through the guide pin 702. Specifically, in the present embodiment, the positioning guide groove 803 is designed to further ensure the stability and accuracy of the aperture adjustment block 701 during movement. Since the positioning guide grooves 803 are arranged at equal intervals with the center of the guide flow hole 804 as the center, the aperture adjustment block 701 can maintain a consistent spacing and angle during the movement along the positioning guide grooves 803, thereby ensuring that the aperture size of the adjustable medium through hole 10 can be accurately controlled. In addition, the installation hole 802 is provided to facilitate the fixing of the guide 8 on the valve body 3 to ensure that it will not move or shake during use. The guide flow hole 804 is the main channel for the circulation of coal powder, and its circular hole structure can reduce the resistance of coal powder during circulation and improve circulation efficiency.

[0044] Furthermore, the driving disk 6 is provided with a driving disk circulation hole 602, and the driving disk circulation hole 602 is arranged at the center of the driving disk 6. The driving guide grooves 601 are arranged in a plurality of arc-shaped strips, and the driving guide grooves 601 are evenly spaced and distributed on the outside of the driving disk circulation hole 602 with the center of the driving disk circulation hole 602 as the center. Specifically, in the present embodiment, the driving disk circulation hole 602 is designed to ensure that the coal powder can pass smoothly through the aperture adjuster 4. Since the driving disk circulation hole 602 is arranged at the center of the driving disk 6, the coal powder can pass quickly when flowing through it, which reduces the resistance and improves the circulation efficiency. In addition, the arc-shaped strip design of the driving guide groove 601 enables the driving disk 6 to smoothly drive the guide pin 702 to move along the driving guide groove 601 when rotating, thereby realizing the precise control of the aperture adjustment block 701. Since the driving guide grooves 601 are evenly spaced with the center of the driving disk flow hole 602 as the center, the moving distances and angles of the aperture adjustment blocks 701 can remain consistent during the rotation of the driving disk 6, thereby ensuring that the aperture size of the adjustable medium through hole 10 can be precisely controlled.

[0045] Further, the driving disk 6 is provided in a disc structure, a gear ring is provided on the outer ring of the driving disk 6, a spiral ring is provided on the driving rod 9, and the gear ring on the driving rod 9 cooperates with the spiral ring on the driving rod 9 for transmission. Specifically, in this embodiment, the driving device 2 is a motor, and a driving gear is provided on the output shaft of the motor, and the driving gear meshes with the gear ring on the driving rod 9. When the motor is started, the driving gear drives the driving rod 9 to rotate, and the spiral ring on the driving rod 9 cooperates with the gear ring on the driving disk 6 for transmission, thereby driving the driving disk 6 to rotate.

[0046] Furthermore, the valve body 3 includes a left valve body 301 and a right valve body 302, and a wear-resistant layer 303 is provided on the inner side of the left valve body 301 and the right valve body 302. Specifically, in this embodiment, the valve body composed of the left valve body 301 and the right valve body 302 is convenient for disassembly and assembly, and the provision of the wear-resistant layer 303 can effectively extend the service life of the valve body and improve the durability of the equipment. The wear-resistant layer 303 can be made of wear-resistant material, which can resist the wear of the inner wall of the valve body by coal powder and ensure the long-term stable operation of the equipment.

[0047] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aperture type coal powder regulating device, characterized in that: The invention comprises an aperture adjustment device (1), a driving device (2) and a driving rod (9); the driving device (2) cooperates with the aperture adjustment device (1) to drive via the driving rod (9); the aperture adjustment device (1) comprises a valve body (3) and an aperture adjuster (4); an adjustable medium through hole (10) is provided on the aperture adjuster (4); the driving rod (9) cooperates with the aperture adjuster (4) to drive; the driving device (2) drives the aperture adjuster (4) via the driving rod (9) so that the adjustable medium through hole (10) can adjust the aperture.

2. The aperture type coal powder regulating device according to claim 1 is characterized in that: The aperture adjuster (4) comprises a drive disk (6), an aperture adjustment assembly (7) and a guide (8); the aperture adjustment assembly (7) comprises a plurality of aperture adjustment blocks (701); the aperture adjustment blocks (701) are movably arranged on the guide (8); the drive rod (9) is arranged in the valve body (3) and meshes with the drive disk (6) for transmission; the drive rod (9) drives the drive disk (6) to rotate; and during the rotation of the drive disk (6), the aperture adjustment blocks (701) are driven to move on the guide (8).

3. The aperture type coal powder regulating device according to claim 2 is characterized in that: The aperture adjustment blocks (701) are arranged to form a circle, and adjacent aperture adjustment blocks (701) are slidably matched with each other. Guide grooves (704) and guide bosses (705) are respectively provided on both sides of the aperture adjustment block (701), and the guide grooves (704) and guide bosses (705) are respectively slidably matched with the guide bosses (705) and guide grooves (704) on adjacent aperture adjustment blocks (701).

4. The aperture type coal powder regulating device according to claim 2 is characterized in that: A guide pin (702) is provided on the aperture adjustment block (701), and a drive guide groove (601) for inserting the guide pin (702) is provided on the drive disk (6), one end of the guide pin (702) extends into the drive guide groove (601) to be connected to the drive disk (6), and the other end of the guide pin (702) passes through the aperture adjustment block (701) to be connected to the guide (8).

5. The aperture type coal powder regulating device according to claim 4 is characterized in that: The guide (8) is provided with a positioning guide groove (803), a mounting hole (802) and a guide circulation hole (804); the guide circulation hole (804) is arranged in the form of a circular hole at the center of the guide (8); a plurality of positioning guide grooves (803) are arranged in the form of an arc structure; the positioning guide grooves (803) are arranged at equal intervals on the outside of the guide circulation hole (804) with the center of the guide circulation hole (804) as the center; one end of the guide pin (702) passes through the aperture adjustment block (701) and extends into the positioning guide groove (803) to be connected to the guide (8); and the drive disk (6) drives the aperture adjustment block (701) to move along the positioning guide groove (803) via the guide pin (702).

6. The aperture type coal powder regulating device according to claim 4, characterized in that: The driving disk (6) is provided with a driving disk circulation hole (602), the driving disk circulation hole (602) being arranged at the center of the driving disk (6), a plurality of driving guide grooves (601) being arranged in the shape of arc-shaped strips, the driving guide grooves (601) being distributed at equal intervals on the outside of the driving disk circulation hole (602) with the center of the driving disk circulation hole (602) as the center.

7. The aperture type coal powder regulating device according to claim 6, characterized in that: The driving disk (6) is arranged in a disc structure, a gear ring is arranged on the outer ring of the driving disk (6), a spiral ring is arranged on the driving rod (9), and the gear ring on the driving rod (9) cooperates with the spiral ring on the driving rod (9) for transmission.

8. The aperture type coal powder regulating device according to claim 1, characterized in that: The valve body (3) comprises a left valve body (301) and a right valve body (302), and a wear-resistant layer (303) is provided on the inner sides of the left valve body (301) and the right valve body (302).

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