Crushing and spraying device special for sludge blending combustion of garbage power plant

Abstract

The utility model discloses a special crushing and spraying device for sludge blending combustion in a garbage power plant, which comprises a processing bin, a feed port is arranged on the upper side of the processing bin, a discharge port is arranged on the lower side of the processing bin, a roller is rotatably mounted in the processing bin, crushing blades are mounted on the roller, and the crushing blades are arranged on the processing bin. A second driving piece used for driving the crushing blades to move in the radial direction of the roller is arranged in the roller, an air pipe is arranged at the bottom of the processing bin, and an air blower is connected to one side of the air pipe. Large sludge blocks are put into the feeding port of the processing bin, then the first driving piece drives the crushing blades to rotate through the roller, the sludge blocks are scattered, when the scattered sludge blocks move to the discharging port, the crushing blades retract into the roller, and the scattered sludge blocks fly out of the discharging port under the inertia effect of the crushing blades. And the scattered sludge blocks are blown into the incinerator through the air blower and the air pipe, so that the discharging efficiency of the scattered sludge blocks is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge crushing, in particular to a special crushing and spraying device for co-incinerating sludge in a waste power plant. Background Art

[0002] For a waste incineration power plant that mainly incinerates domestic waste and co-incinerates dried sludge, the best way to feed the dried sludge into the furnace is to transport it to the waste pit by truck and use a waste grab to put the domestic waste and the dried sludge into the feed hopper of the incinerator.

[0003] However, the sludge blocks fed by the grab are relatively large, and the water content in the sludge blocks is relatively high, so it is easy to have an insufficient combustion situation. Generally, the existing method is to break the larger sludge blocks into fine particles and then send them into the incinerator. The specific working method is to send the sludge blocks into the processing bin, and drive the crushing blades to rotate through a roller, so as to break up the larger sludge blocks, and then discharge them from the discharge port of the processing bin.

[0004] However, because the roller drives the crushing blades to rotate relatively fast, when the crushing blades drive the broken sludge blocks to move to the discharge port, some sludge blocks move out of the discharge port, and some sludge blocks are carried by the crushing blades and move to the upper side of the processing bin again for cyclic crushing and processing, thus affecting the discharge efficiency of the sludge particles at the discharge port. Summary of the Utility Model

[0005] In order to solve at least one technical problem mentioned in the background art, the purpose of the utility model is to provide a special crushing and spraying device for co-incinerating sludge in a waste power plant to improve the discharge efficiency of the discharge port.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: A special crushing and spraying device for co-incinerating sludge in a waste power plant, including a processing bin, an inlet is opened on the upper side of the processing bin, an outlet is opened on the lower side of the processing bin, a roller is rotatably installed inside the processing bin, crushing blades are installed on the roller, a first driving member for driving the roller to rotate is arranged on the processing bin, a second driving member for driving the crushing blades to move radially along the roller is arranged inside the roller, an air duct is arranged at the bottom of the processing bin, one side of the air duct is connected with a blower, and when the crushing blades move to the outlet, the crushing blades contract inside the roller.

[0007] Further, the second driving member includes an elastic member for driving the crushing blade to move towards the axis of the drum. A cam is fixedly installed on the processing chamber and inside the drum. A notch is formed on the circumferential side of the cam, and the opening of the notch faces the discharge port. A connecting rod is fixedly installed on the crushing blade, and a roller is rotatably installed on the connecting rod. The roller abuts against the circumferential side of the cam. When the roller moves to the notch, the crushing blade retracts into the drum.

[0008] Further, the notch includes a contraction surface and an inclined support surface. The contraction surface passes through the axis of the drum, and the inclined support surface is an arc surface.

[0009] Further, the first driving member includes a motor, a belt pulley mechanism, and a shaft rod. The belt pulley mechanism includes an output end and an input end. The output end is fixedly connected to the motor, and the input end is fixedly connected to the shaft rod. The shaft rod is fixedly connected to the side surface of the drum shaft.

[0010] Further, a hopper is fixedly installed on the upper side of the processing chamber, and the hopper is located directly above the feed port.

[0011] Further, there are multiple groups of crushing blades, which are distributed along the axial direction of the drum. Each group has multiple blades, which are distributed along the circumferential direction of the drum.

[0012] Further, the elastic member includes a sleeve fixedly installed on the inner wall of the drum. The crushing blade is slidably arranged in the sleeve. A spring is fixedly installed between the inside of the sleeve and the crushing blade. A through groove for the connecting rod to pass through is formed on the side wall of the sleeve.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: Larger sludge blocks are put into the feed port of the processing chamber. Then, the first driving member drives the crushing blade to rotate through the drum to break up the sludge blocks. When the broken-up sludge blocks move to the discharge port, the crushing blades will retract into the drum, so that they will not entangle the broken sludge blocks and rotate in the processing chamber again. The broken-up sludge blocks fly out of the discharge port under the action of their own inertia. Then, through the blower and the air duct, air is blown at the discharge port to blow the broken-up sludge blocks into the incinerator, thereby improving the discharge efficiency of the broken-up sludge blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a full-sectional schematic diagram of the overall structure of the present utility model;

[0016] Figure 3 is a sectional view of the drum structure of the present utility model;

[0017] Figure 4 is for the present utility model in Figure 3Schematic diagram of the structure at position A in [device name].

[0018] In the figure: 1, processing bin; 2, feed inlet; 3, discharge outlet; 4, roller; 5, crushing blade; 6, first driving member; 61, motor; 62, belt pulley mechanism; 63, shaft rod; 7, second driving member; 71, elastic member; 711, sleeve; 712, spring; 713, through groove; 72, cam; 73, notch; 731, contraction surface; 732, inclined support surface; 74, connecting rod; 75, roller; 8, air duct; 9, blower; 10, hopper. Specific implementation mode

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0020] In the existing sludge co-incineration in waste power plants, it is usually directly fed into the incinerator by a grab bucket for combustion. In this feeding method, the sludge blocks are relatively large, the combustion is incomplete, and the sludge blocks are prone to accumulate at the bottom of the incinerator.

[0021] Please refer to Figure 1 and Figure 2 , to solve the above technical problems, this embodiment provides a special crushing and spraying device for sludge co-incineration in waste power plants, including a processing bin 1, a feed inlet 2 is opened on the upper side of the processing bin 1, a discharge outlet 3 is opened on the lower side of the processing bin 1, a roller 4 is rotatably installed inside the processing bin 1, a crushing blade 5 is installed on the roller 4, and a first driving member 6 for driving the roller 4 to rotate is arranged on the processing bin 1.

[0022] Larger sludge blocks are put into the feed inlet 2 of the processing bin 1, and then the first driving member 6 drives the roller 4 to rotate, thereby driving the crushing blade 5 to rotate. The rotating crushing blade 5 strikes and disperses the sludge blocks. The dispersed sludge blocks will move out from the discharge outlet 3 on the lower side of the processing bin 1 along with the rotation and gravity of the crushing blade 5, and then be sent into the incinerator.

[0023] Since the temperature inside the incinerator is relatively high, about 400 to 600 degrees, the crushing device is generally about three to five meters away from the incinerator. It is difficult for the sludge blocks after being dispersed to fly into the incinerator only relying on their own inertia.

[0024] Please refer to Figure 1 and Figure 2In order to facilitate the entry of the broken sludge blocks into the incinerator, an air duct 8 is provided at the bottom of the processing bin 1, and a blower 9 is connected to one side of the air duct 8. Through the blower 9 and the air duct 8, air is blown to the discharge port 3, and the wind direction is toward the incinerator. Since the broken sludge blocks are light in weight, the sludge blocks will float into the incinerator under the wind, which is convenient for the transportation of the broken sludge blocks.

[0025] like Figure 2 As shown, because the drum 4 drives the crushing blade 5 to rotate faster, when the crushing blade 5 drives the broken sludge blocks to move to the discharge port 3, it is easy for some sludge blocks to move out of the discharge port 3, and some sludge blocks are moved to the upper side of the processing bin 1 again under the influence of the crushing blade 5, and the crushing process is circulated, so that the discharge efficiency of the discharge port 3 is low.

[0026] See also Figure 2 To solve the above technical problems, a second driving member 7 is provided inside the drum 4 for driving the crushing blade 5 to move radially along the drum 4 . When the crushing blade 5 moves to the discharge port 3 , the crushing blade 5 shrinks inside the drum 4 .

[0027] Therefore, when the broken up sludge blocks move to the discharge port 3, they move from the discharge port 3 under the action of inertia, and the crushing blade 5 will shrink into the drum 4 when moving to the discharge port 3, so that the broken up sludge blocks will not be entrained to rotate in the processing chamber 1, causing some of the broken up sludge blocks to remain in the processing chamber 1.

[0028] See also Figures 2-4 The second driving member 7 includes an elastic member 71 for driving the crushing blade 5 to move toward the axis of the drum 4. A cam 72 is fixedly installed on the processing chamber 1 and located inside the drum 4. A slot 73 is provided on the side of the cam 72. The slot 73 opens toward the discharge port 3. A connecting rod 74 is fixedly installed on the crushing blade 5. A roller 75 is rotatably installed on the connecting rod 74. The roller 75 abuts against the side of the cam 72. When the roller 75 moves to the slot 73, the crushing blade 5 retracts into the drum 4.

[0029] When the crushing blade 5 is not at the notch 73, the crushing blade 5 is in a state of extending out of the roller 75, and the end of the crushing blade 5 away from the roller 75 is 5mm-10mm away from the inner wall of the processing chamber 1, which is relatively small, so that it is convenient to break up and crush the sludge blocks in the processing chamber 1. When the roller 75 moves to the notch 73 of the cam 72, there is a lack of support for the roller 75 by the cam 72, so that the crushing blade 5 moves toward the axis of the drum 4 (that is, it shrinks into the drum 4) driven by the elastic member 71, so that the broken sludge blocks can be separated from the processing chamber 1. After the crushing blade 5 passes over the discharge port 3, the roller 75 moves along the side wall of the notch 73 to the outer wall of the cam 72, so that the crushing blade 5 extends out of the drum 4 again to break up and crush the sludge blocks.

[0030] Please refer to Figure 2 , the notch 73 includes a contraction surface 731 and a brace surface 732. The contraction surface 731 passes through the axis of the roller 4, and the brace surface 732 is an arc surface.

[0031] When the roller 75 on the crushing blade 5 passes through the contraction surface 731, the crushing blade 5 will directly contract into the roller 4 under the drive of the elastic member 71. At this time, the part of the crushing blade 5 outside the roller 4 is the shortest. During the process of the roller 75 passing through the brace surface 732, the roller 75 will roll along the brace surface 732, and the crushing blade 5 will gradually extend out of the outside of the roller 4 until the roller 75 moves to the outermost side surface of the cam 72, and the crushing blade 5 has also completely extended out of the outside of the roller 4.

[0032] Please refer to Figure 1 , the first driving member 6 includes a motor 61, a belt pulley mechanism 62 and a shaft rod 63. The belt pulley mechanism 62 includes an output end and an input end. The output end is fixedly connected to the motor 61, the input end is fixedly connected to the shaft rod 63, and the shaft rod 63 is fixedly connected to the side surface of the axis of the roller 4. The motor rotates and is transmitted to the shaft rod 63 through the belt pulley mechanism 62, so that the shaft rod 63 starts to rotate, and then drives the roller 4 to rotate.

[0033] Please refer to Figure 1 , a hopper 10 is fixedly installed on the upper side of the processing bin 1, and the hopper 10 is located directly above the feed inlet 2. The output sludge blocks are sent into the feed inlet 2 through the hopper 10.

[0034] There are multiple groups of crushing blades 5, which are distributed along the axial direction of the roller 4, and each group has multiple ones, which are distributed along the circumferential direction of the roller 4. The crushing and hitting area of the sludge blocks is increased, thereby improving the crushing efficiency.

[0035] The elastic member 71 includes a sleeve 711 fixedly installed on the inner wall of the roller 4. The crushing blade 5 is slidably arranged in the sleeve 711. A spring 712 is fixedly installed between the inside of the sleeve 711 and the crushing blade 5. A through groove 713 for the connecting rod 74 to pass through is formed on the side wall of the sleeve 711.

[0036] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A special crushing and spraying device for co-firing sludge in a waste power plant, comprising a processing bin (1), an inlet (2) is arranged on the upper side of the processing bin (1), an outlet (3) is arranged on the lower side of the processing bin (1), a roller (4) is rotatably installed inside the processing bin (1), crushing blades (5) are installed on the roller (4), and a first driving member (6) for driving the roller (4) to rotate is arranged on the processing bin (1), characterized in that, A second driving member (7) for driving the crushing blade (5) to move radially along the drum (4) is arranged inside the drum (4). An air duct (8) is arranged at the bottom of the processing bin (1). One side of the air duct (8) is connected with a blower (9). When the crushing blade (5) moves to the discharge port (3), the crushing blade (5) contracts inside the drum (4).

2. The special crushing and spraying device for co-incinerating sludge in a waste power plant according to claim 1, wherein, The second driving member (7) includes an elastic member (71) for driving the crushing blade (5) to move towards the axis of the drum (4). A cam (72) is fixedly installed on the processing bin (1) and inside the drum (4). A notch (73) is formed on the circumferential surface of the cam (72). The notch (73) opens towards the discharge port (3). A connecting rod (74) is fixedly installed on the crushing blade (5). A roller (75) is rotatably installed on the connecting rod (74). The roller (75) abuts against the circumferential surface of the cam (72). When the roller (75) moves to the notch (73), the crushing blade (5) contracts into the drum (4).

3. The special crushing and spraying device for co-incinerating sludge in a waste power plant according to claim 2, wherein, The notch (73) includes a contraction surface (731) and an inclined support surface (732). The contraction surface (731) passes through the axis of the drum (4). The inclined support surface (732) is an arc surface.

4. The special crushing and spraying device for co-incinerating sludge in a waste power plant according to claim 1, wherein, The first driving member (6) includes a motor (61), a belt pulley mechanism (62) and a shaft rod (63). The belt pulley mechanism (62) includes an output end and an input end. The output end is fixedly connected with the motor (61), and the input end is fixedly connected with the shaft rod (63). The shaft rod (63) is fixedly connected with the axial side of the drum (4).

5. The special crushing and spraying device for co-incinerating sludge in a waste power plant according to claim 1, characterized in that, A hopper (10) is fixedly installed on the upper side of the processing bin (1). The hopper (10) is located directly above the feed inlet (2).

6. The special crushing and spraying device for co-incinerating sludge in a waste power plant according to claim 1, characterized in that, There are multiple groups of the crushing blades (5), which are distributed along the axial direction of the drum (4). Each group has multiple blades, which are distributed along the circumferential direction of the drum (4).

7. The special crushing and spraying device for co-firing sludge in a waste power plant according to claim 2, characterized in that, The elastic member (71) includes a sleeve (711) fixedly installed on the inner wall of the drum (4). The crushing blade (5) is slidably arranged inside the sleeve (711). A spring (712) is fixedly installed between the inside of the sleeve (711) and the crushing blade (5). A through groove (713) for the connecting rod (74) to pass through is formed on the side wall of the sleeve (711).

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