Anti-clogging granulator

Abstract

The present invention relates to the field of municipal sludge drying. An anti-clogging granulator, the upper opening of the shell is a receiving port, the lower opening is a discharging port, the shell is provided with a distributor, a material breaking assembly, a reciprocating material dispenser, and a roller shearing granulation assembly from top to bottom in sequence; the roller shearing granulation assembly includes two parallel toothed shearing rollers that penetrate the shell, the two shearing rollers are respectively an active shearing roller and a driven shearing roller, the active shearing roller and the driven shearing roller extend out of the shell and mesh with partial gears, the active shearing roller is connected to a shearing power device, the active shearing roller and the driven shearing roller have concave and convex shearing teeth on the roller bodies inside the shell, and the shearing teeth on the two shearing rollers mesh with each other. The present invention has a simple structure, can operate reliably and continuously for a long time without clogging, can evenly arrange the material on the mesh belt of the dryer after granulation before the material is dried, and provides good conditions for subsequent drying, the shell of the device has good sealing performance, and does not cause environmental impact around it.

Description

Technical Field

[0001] The invention relates to the field of municipal sludge drying, and in particular to an anti-clogging granulator matched with a belt dryer. Background Art

[0002] There are two main ways to dry sludge: mechanical dehydration and drying. Drying is to use heat source to heat the sludge to promote the evaporation of water in the sludge, thereby reducing the water content of the sludge and creating conditions for further sludge incineration.

[0003] Various forms of belt dryers are the most commonly used equipment in sludge drying. However, in order to achieve good results with the belt dryer, the quality of sludge feeding and distribution in the dryer is extremely important.

[0004] Practice has shown that the drying effect of sludge directly unloading onto the drying mesh belt and the drying effect of sludge granulated before unloading onto the mesh belt are significantly improved compared with the former. Therefore, it has been reached a consensus in the industry that the sludge needs to be granulated before entering the dryer.

[0005] However, the biggest problem with the granulators currently in use is blockage during operation. Municipal sludge contains a large amount of impurities such as hair and plastic fibers. These impurities are extremely tough and difficult to flow, which can easily cause blockage in the granulator, thereby affecting the normal operation of the granulator. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that a sludge granulator is easily blocked, and to provide an anti-blocking granulator which has the functions of crushing materials, shearing and pressing off impurities such as hair and plastic fibers, and evenly distributing the sludge on a belt dryer mesh belt.

[0007] In order to solve the above problems, the present invention adopts the following technical solutions:

[0008] A blocking-proof granulator comprises a shell, wherein the upper opening of the shell is a receiving opening, and the lower opening is a discharging opening. A material distributor, a material breaking assembly, a reciprocating material distributor, and a roller shearing and pressing granulating assembly are sequentially arranged in the shell from top to bottom; the roller shearing and pressing granulating assembly comprises two parallel toothed shearing and pressing rollers penetrating the shell, the two shearing and pressing rollers are respectively an active shearing and pressing roller and a driven shearing and pressing roller, the active shearing and pressing roller and the driven shearing and pressing roller protrude out of the shell and mesh with partial gears, the active shearing and pressing roller is connected to a shearing and pressing power device, the active shearing and pressing roller and the driven shearing and pressing roller have concave and convex shearing and pressing teeth on the roller bodies inside the shells, and the shearing and pressing teeth on the two shearing and pressing rollers mesh with each other.

[0009] Furthermore, the distributor of the above-mentioned anti-clogging granulator is located in the middle of the material receiving port of the shell, and is a material guide trough formed by welding a plurality of steel plates.

[0010] Furthermore, the material breaking assembly of the above-mentioned anti-clogging granulator is located below the distributor, and is composed of a stationary metal grating plate and a scraper bar that performs reciprocating motion. The scraper bar is movably placed on the metal grating plate, and the length direction of the scraper bar is perpendicular to the reciprocating motion direction. The scraper bar and the feeder share a crank connecting rod and a scraper power device that are connected to the reciprocating motion.

[0011] Furthermore, the reciprocating material feeder of the above-mentioned anti-clogging granulator includes a plurality of material feeder rods, which are connected by structural parts to form a frame structure. Each material feeder rod has a material feeder head, which is located above the meshing gap of the toothed rollers of the double-roller shearing granulation assembly and reciprocates above the meshing gap.

[0012] The beneficial effects of the present invention are as follows: the shell of the present invention is equipped with a material breaking component, a reciprocating material feeder, and a roller shearing and pressing granulation component. The sludge is crushed, fed, and sheared, and the hair, plastic, and other garbage that are easy to clog in the sludge are broken into small pieces, and then granulated, which can effectively overcome the clogging problem of the current sludge granulator. The structure is simple, and the material can be evenly arranged on the mesh belt of the dryer after granulation before drying, and the thickness of the cloth can be adjusted to provide good conditions for subsequent drying. The shell of the device has good sealing performance and does not cause environmental impact around it. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the anti-clogging granulator of the present invention.

[0014] Figure 2 yes Figure 1 Left view of .

[0015] Figure 3 It is a schematic diagram of the material breaking component of the new type dryer anti-clogging granulator of the present invention.

[0016] In the figure: 1. Shell; 2. Distributor; 3. Material breaking assembly; 4. Reciprocating material distributor; 401. Material distributor rod; 402. Material distributor head; 5. Double roller shearing and pressing granulation assembly; 6. Metal sieve plate; 7. Scraping strip; 8. Crank connecting rod; 9. Scraping power device; 10. Gear; 11. Scraping power device. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described examples are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0018] like Figure 1 , Figure 2As shown, this example provides an anti-clogging granulator, including a housing 1, the housing is an inverted trapezoidal housing, the upper opening of the inverted trapezoid is a material receiving opening, and the lower opening is a material discharging opening, and a material distributor 2, a material breaking component 3, a reciprocating material distributor 4, and a roller shearing and pressing granulating component 5 are arranged in the housing from top to bottom;

[0019] The anti-clogging granulator distributor 2 is located in the middle of the shell receiving port, and is a guide trough formed by welding a number of steel plates. The sludge entering the granulator is divided from the middle to both sides along the material discharge width direction through the distributor;

[0020] The material breaking assembly 3 is located below the material distributor 2. Figure 3 As shown, it is composed of a stationary metal grating plate 6 and a scraper bar 7 that performs reciprocating motion. The length direction of the scraper bar 7 is perpendicular to the reciprocating motion direction. The scraper bar and the feeder share the same reciprocating crank connecting rod 8 and scraper power device 9.

[0021] The sludge to be dried with a certain moisture content is fed into the feed port of the granulator by the sludge transport equipment. The sludge is distributed to both sides from the feed port under the action of the distributor 2. The basically evenly distributed sludge falls on the metal grid plate 6 of the crushing component 3. The crank connecting rod 8 and the mud power device 9 drive the scraper bar 7 to reciprocate on the upper surface of the metal grid plate 6. The sludge with smaller pieces falling on the grid plate 6 falls from the holes of the grid plate 6, and the sludge with larger pieces is blocked by the grid plate 6. The reciprocating motion of the scraper bar 7 breaks the sludge with larger pieces, and at the same time, the sludge is distributed for the second time along the width direction of the dryer.

[0022] The reciprocating material feeder 4 is composed of a plurality of material feeder rods 401 and structural parts connecting these material feeder rods 401 to form a frame structure. Each material feeder rod has a material feeder head 402, which is located above the meshing gap of two parallel tooth rollers of the roller shearing and pressing granulating assembly 5 and reciprocates above the meshing gap. The sludge crushed and secondary distributed from the grid plate by the crushing assembly 3 falls on the roller shearing and pressing granulating assembly 5.

[0023] The roller shearing and pressing granulation assembly 5 includes two parallel active shearing and pressing rollers and a driven shearing and pressing roller that penetrate the shell 1. The ends of the two shearing and pressing rollers are provided with mutually meshing gears 10, wherein the active shearing and pressing rollers are connected with a shearing and pressing power device 11, and the roller bodies of the two shearing and pressing rollers are provided with shearing and pressing teeth with concave and convex alternating patterns, and the shearing and pressing teeth on the two rollers are meshed with each other. The shearing and pressing power device 11 drives the active shearing and pressing rollers of the roller shearing and pressing granulation assembly 5, and the active shearing and pressing rollers rotate while driving the driven shearing and pressing rollers to rotate in the opposite direction, rolling the sludge falling on the toothed rollers into the meshing gap of the two toothed rollers, and shearing and pressing the sludge rolled into the meshing gap into thin strips and arranged below the meshing gap. At the same time, the crank connecting rod 8 and the scraping mud power device 9 drive the material dispensing device 4 to reciprocate above the meshing gap of the roller shearing and pressing granulation assembly 5, and push the sludge that is arched on the two toothed rods and cannot fall into the meshing gap by itself into the meshing gap. The reciprocating feeder further distributes the sludge evenly during the feeding process. The shearing roller has concave and convex shearing teeth that squeeze the sludge into granules. The shearing function of the shearing teeth cuts off the hair, plastic fiber and other impurities in the sludge while squeezing the sludge, thereby solving the problem of hair and other impurities in the sludge blocking the granulator.

[0024] In the application of this example, the discharge port of the granulator is closely connected with the feed port of the dryer, and the sludge coming out of the granulator falls directly onto the mesh belt of the dryer. At the same time, the rotation speed of the roller shearing granulation assembly 5 and the running speed of the belt dryer mesh belt can be adjusted according to the amount of sludge, so as to realize the effective control of the thickness of the cloth on the mesh belt.

[0025] In summary, the present invention provides an anti-clogging granulator, which can effectively overcome the clogging problem of the current sludge granulator. It has a simple structure, and can evenly arrange the material on the mesh belt of the dryer after granulation before drying. The thickness of the cloth can be adjusted to provide good conditions for subsequent drying. The device shell has good sealing performance and does not cause environmental impact on the surroundings.

[0026] The above examples are merely illustrative of the present invention and are not intended to limit the present invention and its protection scope. Any design that is identical or similar to the new belt design belongs to the protection scope of the present invention.

Claims

1. An anti-clogging granulator, comprising a housing (1), wherein the upper opening of the housing is a material receiving opening, and the lower opening is a material discharging opening, characterized in that: The shell body is provided with a material distributor (2), a material breaking assembly (3), a reciprocating material distributor (4) and a roller shearing and pressing granulation assembly (5) in order from top to bottom; the material breaking assembly (3) is composed of a stationary metal grating plate (6) and a scraping strip (7); the scraping strip (7) is movably placed on the metal grating plate (6); the length direction of the scraping strip (7) is perpendicular to the reciprocating motion direction; the scraping strip and the material distributor share a crank connecting rod (8) and a scraping power device (9) for connecting the reciprocating motion; the reciprocating material distributor (4) comprises a plurality of material distributor rods (401); the material distributor rods (401) are connected by structural parts to form a frame structure; each material distributor rod (401) has a material distributor head (402); The head (402) is located above the meshing seam of the toothed rollers of the roller shearing and granulating assembly (5) and reciprocates above the meshing seam; the roller shearing and granulating assembly (5) comprises two parallel toothed shearing rollers penetrating the shell (1); the two shearing rollers are respectively an active shearing roller and a driven shearing roller; the active shearing roller and the driven shearing roller extend out of the shell and mesh with gears; the active shearing roller is connected to a shearing power device (11); the active shearing roller and the driven shearing roller have shearing teeth with alternating concave and convex shapes on the roller bodies inside the shell; the shearing teeth on the two shearing rollers mesh with each other; the shearing teeth extrude the sludge into granules; the shearing function of the shearing teeth shears off impurities such as hair and plastic fibers in the sludge while squeezing the sludge.

2. The anti-clogging granulator according to claim 1, characterized in that: The shell (1) is in the shape of an inverted trapezoidal shell, and the distributor (2) is located in the middle of the material receiving port of the shell and is a material guide trough formed by welding a plurality of steel plates.

3. The anti-clogging granulator according to claim 1, characterized in that: The shell is an inverted trapezoidal shell.

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