High-speed steel roller casting negative pressure dust removal device

Abstract

The utility model relates to the field of roller casting, and discloses a high-speed steel roller casting negative pressure dust removal device which comprises a shell, an air inlet pipeline and a sleeve installed in the shell. The plurality of filter screens are arranged on the outer surface of the sleeve at equal intervals; the flushing pipe is mounted in the sleeve; the first water outlet is formed in the lower position of the side, close to the air outlet, of the flushing pipe; the second water outlet is formed in the surface of the sleeve and is close to the filter screen; the motor is connected with the transmission shaft at one end of the sleeve. The casing pipe is installed in the shell, the multiple sets of filter screens are fixed to the outer surface of the casing pipe, the motor drives the filter screens to rotate, air enters the position between the two sets of filter screens, particles in the air are attached to the surfaces of the filter screens along with rotation of the filter screens, it is guaranteed that dust makes contact with water on the surfaces of the filter screens, dust precipitation is facilitated, and dust removal is facilitated. And dust attached to the surface of the filter screen is flushed through water discharged from the flushing pipe, so that the filter screen is prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of roller casting, in particular to a negative pressure dust removal device for high-speed steel roller casting. Background Art

[0002] At present, the application of high-speed steel rolls is an important part of the development of modern steel rolling production. It is another major change in the development of the steel industry after micro-alloying and controlled rolling and cooling technology. High-speed steel rolls have been widely used in Japan in the steel rolling production of plates, steel sections, bars and wires. They are not only used for working rolls, but also for support rolls. The good wear resistance of high-speed steel rolls is inseparable from its characteristics that are significantly different from traditional rolls. The casting of high-speed steel rolls is usually carried out in an open factory. During casting, a large amount of hot air and sputtering metal sparks will be generated. A large amount of dust is mixed in the hot air. Small particles of metal sparks will also form suspended dust after cooling, resulting in excessive dust in the factory, affecting the health of workers. Negative pressure dust removal devices are usually used for air purification.

[0003] Existing negative pressure dust removal devices mostly increase the weight of dust by spraying through a spray pipe, so that the dust falls to the bottom of the box. However, during the spraying, it cannot be guaranteed that the particles are completely sprayed, and then they are wetted and settled in the box, affecting the dust removal effect. On the other hand, the dust at the bottom of the box is inconvenient to clean. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a negative pressure dust removal device for high-speed steel roll casting, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solutions:

[0006] The utility model discloses a high-speed steel roll casting negative pressure dust removal device, comprising a shell, and the shell is cylindrical, an air inlet is opened on the top of one side of the shell, and an air inlet duct is welded at the air inlet.

[0007] The sleeve is installed inside the shell and is located on the same axis as the shell;

[0008] The filter screen is divided into a plurality of equidistantly arranged on the outer surface of the sleeve, and the end of the filter screen away from the sleeve is close to the inner wall of the shell;

[0009] Flushing pipe, installed inside the casing;

[0010] Water outlet 1 is located at the lower part of the flushing pipe near the air outlet;

[0011] The second water outlet is opened on the surface of the casing and is close to the filter screen;

[0012] The motor is connected to the transmission shaft at one end of the sleeve.

[0013] Furthermore, a downwardly inclined material guide plate is fixed to the bottom of the shell at the air outlet position, and a collection box is fixed to a position below the shell where the air outlet and the material guide plate are connected.

[0014] Furthermore, a transmission belt is installed inside the collection box near the bottom plate.

[0015] Furthermore, a plurality of scrapers are installed on the surface of the transmission belt.

[0016] Furthermore, a drainage port is provided on one side of the bottom of the collection box.

[0017] Furthermore, a plurality of spray pipes are installed on the top of the shell near the air inlet duct.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The utility model installs a sleeve inside the shell, and fixes several groups of filter screens on the outer surface of the sleeve. The filter screens are driven to rotate by a motor, so that air enters between the two groups of filter screens. As the filter screens rotate, the particulate matter in the air adheres to the surface of the filter screens, ensuring the contact between dust and water on the surface of the filter screens, facilitating the precipitation of dust, and washing away the dust adhering to the surface of the filter screens through the water discharged from the flushing pipe to avoid clogging of the filter screens.

[0020] 2. The utility model installs a transmission belt inside the collection box, fixes several groups of scrapers on the surface of the transmission belt, and connects the transmission shaft of the transmission belt with the transmission shaft of the sleeve through a transmission chain. When the motor is started, the scrapers can be driven to move together, thereby cleaning the dust deposited at the bottom of the collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a left-side three-dimensional structural diagram of the utility model;

[0022] Figure 2 It is a right-side three-dimensional structural diagram of the utility model;

[0023] Figure 3 This is a cutaway three-dimensional structural diagram of the utility model;

[0024] Figure 4 This is a disassembled structural diagram of the casing and flushing pipe in the utility model;

[0025] The numbers in the figure represent: 1. Shell; 2. Air inlet duct; 3. Casing; 4. Filter; 5. Flushing pipe; 6. Water outlet 1; 7. Water outlet 2; 8. Motor; 9. Guide plate; 10. Collection box; 11. Transmission belt; 12. Scraper; 13. Drain; 14. Spray pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0027] See also Figure 1-4, including a shell 1, and the shell 1 is cylindrical, an air inlet is opened on the top of one side of the shell 1, and an air inlet duct 2 is welded at the air inlet. By connecting the negative pressure fan to the air inlet duct 2, the fan sends air with particulate matter into the shell 1 through the air inlet duct 2. An air outlet is opened at the bottom of the shell 1 on the side away from the air inlet. A sleeve 3 is installed inside the shell 1 and is located on the same axis as the shell 1. One side of the sleeve 3 is open and the other side is closed by a connecting piece. A transmission shaft is fixed on the side of the connecting piece close to the inner wall of the shell 1. A mounting hole is opened on the outer wall of the shell 1 corresponding to the position of the transmission shaft. The sleeve 3 is installed by plugging the transmission shaft into the mounting hole. Installed inside the shell 1; the filter screen 4 is divided into several equally spaced ones and arranged on the outer surface of the sleeve 3, and the end of the filter screen 4 away from the sleeve 3 is close to the inner wall of the shell 1, and according to the setting of the air inlet and the air outlet, the number of the filter screens 4 is ≥ 3, thereby preventing the air entering the inside of the shell 1 from being restricted between the two groups of filter screens 4; the flushing pipe 5 is installed inside the sleeve 3, and the water supply pipe is connected from the open side of the sleeve 3, and the support strength of the sleeve 3 is strengthened through the flushing pipe 5; the water outlet 1 6 is opened at the lower position of the flushing pipe 5 near the air outlet side; the water outlet 2 7 is opened on the surface of the sleeve 3 and is close to the filter screen 4; the motor 8 is connected to the sleeve 3 The transmission shaft at one end is connected, and the sleeve 3 is driven to rotate by the motor 8, so that the filter 4 rotates inside the shell 1. When the filter 4 rotates, the air with particulate matter entering the shell 1 is squeezed downward, and the dust floats upward due to inertia, so that the dust adheres to the surface of the filter 4. Water is introduced into the flushing pipe 5. When the water outlet 1 6 and the water outlet 2 7 coincide with each other, the water source in the flushing pipe 5 flows from the flushing pipe 5 to the surface of the filter 4, wetting the surface of the filter 4. After the wet filter 4 contacts the dust, the adhesion between the dust and the filter 4 is enhanced, reducing the possibility of the dust continuing to float as the filter 4 rotates continuously, and To further increase the contact between dust and water, when the dust adhered to the surface of the filter 4 continues to rotate with the filter 4, and the water outlet 1 6 on the side of the filter 4 overlaps with the water outlet 2 7 again, the filter 4 is in a downward tilted state, and the water gushing out from the flushing pipe 5 flushes the surface of the filter 4, so that the dust adhered to the surface of the filter 4 falls to the bottom of the shell 1 along the inclined slope of the filter 4, avoiding clogging of the mesh of the filter 4, and when the sleeve 3 rotates with the filter 4, the position where the water outlet 2 7 overlaps with the water outlet 1 6 constantly changes. When the water outlet 2 7 is misaligned with the water outlet 1 6, the flushing pipe 5 automatically stops discharging water, thereby achieving the effect of saving water.

[0028] A downward-sloping guide plate 9 is fixed to the bottom of the housing 1 at the air outlet. A collection box 10 is fixed below the housing 1 at the junction of the air outlet and the guide plate 9. Particles washed from the surface of the filter 4 fall along the guide plate 9 into the collection box 10, where they are collected and settled. A drive belt 11 is installed near the bottom of the collection box 10. Drive rollers are mounted on both sides of the belt 11 and are attached to the inner wall of the collection box 10. One set of drive rollers extends outside the collection box 10 and is connected to the drive rollers of the sleeve 3 via a drive chain. This allows the motor 8 to rotate the sleeve 3 and, in turn, the drive chain drives the drive belt 11. Several sets of scrapers 12 are mounted on the surface of the belt 11. When dust settles inside the collection box 10 and falls to the bottom of the collection box 10, the scrapers 12 are driven by the belt 11 to move, pushing the settled dust toward one side of the collection box 10. A drain port 13 is provided on one side of the bottom of the collecting box 10 , and the scraper 12 pushes the deposited dust out of the collecting box 10 from the drain port 13 , thereby facilitating the cleaning of the deposited dust inside the collecting box 10 .

[0029] A plurality of spray pipes 14 are installed at the top of the shell 1 near the air inlet duct 2. When air containing particulate matter enters the shell 1 through the air inlet duct 2, the air is sprayed by the spray pipes 14, so that the dust in the air is more quickly brought into contact with the water mist. When the spray pipes 14 spray, the water mist sprayed by the spray pipes 14 settles and falls onto the surface of the filter 4, thereby increasing the humidity on the surface of the filter 4 and enhancing the adhesion between the dust and the filter 4.

[0030] Working principle: air containing particulate matter passes through the negative pressure fan and the air inlet duct 2 into the interior of the shell 1. When entering the interior of the shell 1, it is filtered by the two groups of filter screens 4, and is sprayed by the spray pipe 14, so that the particles increase their own weight and fall onto the surface of the filter screen 4. As the motor 8 drives the filter screen 4 to rotate, the particles that have not come into contact with the water mist are squeezed downward by the filter screen 4 and confined between the two groups of filter screens 4. The particles stay in the upper space due to inertia. When the filter screen 4 is pressed down, the particles in the air come into contact with the surface of the filter screen 4, and the filter screen 4 is wetted by the water from the flushing pipe 5 and the spraying pipe 14, which increases the stickiness between the particles and the filter screen 4. When the sleeve 3 is rotated by the motor 8, the water outlet 2 7 opened on the surface of the sleeve 3 and the water outlet 1 opened on the flushing pipe 5 6 overlaps intermittently. When the water outlet 1 6 and the water outlet 2 7 overlap, the water inside the flushing pipe 5 flows to the surface of the filter 4 to flush the filter 4. The dust accumulated on the surface of the filter 4 slides to the surface of the guide plate 9 as the flushing pipe 5 and the filter 4 are tilted, and falls into the collection box 10 under the guidance of the guide plate 9. The dust settles and falls to the bottom of the collection box 10. While the motor 8 drives the sleeve 3 to rotate, the transmission chain drives the transmission shaft of the transmission belt 11 to rotate, thereby driving the transmission belt 11 to rotate. While the transmission belt 11 rotates, the scraper 12 on the surface of the transmission belt 11 cleans the dust settled at the bottom of the collection box 10, and pushes the dust out of the drain port 13 to the inside of the collection box 10, reducing the difficulty of cleaning the sediment inside the collection box 10.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A negative pressure dust removal device for high-speed steel roll casting, comprising a housing (1), wherein the housing (1) is cylindrical, an air inlet is provided at the top of one side of the housing (1), and an air inlet duct (2) is welded to the air inlet. It is characterized in that Also included are: The sleeve (3) is installed inside the housing (1) and is located on the same axis as the housing (1); The filter screen (4) is divided into a plurality of equidistantly arranged on the outer surface of the sleeve (3), and the end of the filter screen (4) away from the sleeve (3) is close to the inner wall of the shell (1); A flushing pipe (5) is installed inside the casing (3); A water outlet (6) is provided at a lower position of the flushing pipe (5) near the air outlet; The second water outlet (7) is provided on the surface of the sleeve (3) and is close to the filter screen (4); The motor (8) is connected to the transmission shaft at one end of the sleeve (3).

2. The negative pressure dust removal device for high-speed steel roll casting according to claim 1, characterized in that: A downwardly inclined material guide plate (9) is fixed to the bottom of the housing (1) at the air outlet position, and a collection box (10) is fixed to a position below the housing (1) that is connected to the air outlet and the material guide plate (9).

3. The negative pressure dust removal device for high-speed steel roll casting according to claim 2, characterized in that: A transmission belt (11) is installed inside the collection box (10) near the bottom plate.

4. The negative pressure dust removal device for high-speed steel roll casting according to claim 1, characterized in that: A plurality of scrapers (12) are installed on the surface of the transmission belt (11).

5. The negative pressure dust removal device for high-speed steel roll casting according to claim 2, characterized in that: A drainage outlet (13) is provided on one side of the bottom of the collection box (10).

6. The negative pressure dust removal device for high-speed steel roll casting according to claim 1, characterized in that: A plurality of spray pipes (14) are installed on the top of the housing (1) near the air inlet duct (2).

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