Screening equipment for utilizing fly ash-doped solid waste

Abstract

The utility model relates to screening equipment for utilizing fly ash-doped solid waste, which comprises a shell and a feed hopper fixedly arranged at the top of the shell in a penetrating manner, a discharge port and a slag discharge port are respectively formed in the lower half parts of two opposite side walls of the shell, and a discharge inclined plate and a slag discharge inclined plate are respectively and fixedly connected to the inner bottom walls of the discharge port and the slag discharge port. The discharging inclined plate and the slag discharging inclined plate partially extend into the shell, a vertical plate is fixedly connected to the inner bottom wall of the shell, and a guide plate is hinged to the top of the vertical plate. The utility model relates to the technical field of coal ash. After screening is completed, the electric push rod works to drive the guide plate to rotate, so that the guide plate is attached to the slag discharging inclined plate, then the two sieve plates rotate, unqualified coal ash falls onto the guide plate through a gap between the two sieve plates and is discharged through the slag discharging inclined plate and the slag discharging opening, and therefore the unqualified coal ash can be conveniently taken out; and the fly ash can be fully screened.

Description

Technical Field

[0001] The utility model relates to the technical field of coal ash, in particular to a screening device for the utilization of solid waste mixed with fly ash. Background Technique

[0002] Fly ash is the fine ash captured from the flue gas after coal combustion. Fly ash is the main solid waste discharged from coal-fired power plants. If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into the water system, it will cause river siltation, and the toxic chemical substances in it will also harm humans and organisms. However, fly ash can be resourcefully utilized, such as being used as a admixture for concrete, etc.

[0003] For example, the Chinese patent with the publication number CN217392901U discloses a screening device for mixing fly ash solid waste, belonging to the technical field of fly ash treatment equipment. Specifically, it includes a cylindrical outer shell and a cylindrical rotating screen. An annular guide rail is arranged on the inner wall of the cylindrical outer shell. Rollers are installed on the outer walls at both ends of the cylindrical rotating screen. A driving gear ring is installed in the middle of the cylindrical rotating screen. A reduction motor is installed on the cylindrical outer shell. A driving gear is installed on the rotating shaft of the reduction motor. Sealing components are respectively arranged on both sides of the driving gear ring and on both sides of the annular guide rail. A first sealing plate and a feeding hopper are installed at one end of the cylindrical outer shell. A large particle outlet is arranged at one end of the cylindrical rotating screen. The feeding hopper is fixed on the first sealing plate, and the discharge port extends into the cylindrical rotating screen. A ash bin and a large particle discharge pipe are arranged at the bottom of the cylindrical outer shell. The utility model has a simple structure, is easy to use, adopts a fully sealed structure, has little dust pollution and a long service life.

[0004] However, the residence time of fly ash in the cylindrical rotating screen in this patent is short, and it is difficult to fully screen the fly ash. Among the existing screening devices, there are those with a non-inclined sieve plate. The fly ash stays on the sieve plate for a long time and the screening effect is good, but this method is not convenient for taking out the unqualified fly ash. Therefore, this application proposes a screening device that is both convenient for taking out unqualified fly ash and can fully screen fly ash. Content of the Utility Model

[0005] According to the deficiencies of the existing technology, the purpose of the utility model is to provide a screening device for the utilization of solid waste mixed with fly ash, so as to solve the technical problems mentioned in the above background technique.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] A screening device for the utilization of fly ash-containing solid waste, comprising a shell and a feed hopper fixedly penetrating through the top of the shell. Lower parts of opposite side walls of the shell are respectively provided with a discharge port and a slag discharge port. Inner bottom walls of the discharge port and the slag discharge port are respectively fixedly connected with a discharge inclined plate and a slag discharge inclined plate. The discharge inclined plate and the slag discharge inclined plate both partially extend into the shell. An upright plate is fixedly connected to the inner bottom wall of the shell. A guiding plate is hinged to the top of the upright plate. A plurality of first springs are fixedly connected between the bottom of the guiding plate and the inner bottom wall of the shell. When the first springs are in a natural state, the bottom surface of the guiding plate is in contact with the discharge inclined plate. An adjusting part is arranged on one side of the shell, and a slag discharging part is arranged in the upper half of the shell.

[0008] Further, the slag discharging part includes two sieve plates hinged to opposite inner walls of the shell. The two sieve plates are in contact with each other. A lead screw is horizontally rotatably connected in the shell. Two sections of threads with opposite helix directions are arranged on the outer peripheral surface of the lead screw. And screw blocks are threadedly connected to both sections of threads on the outer peripheral surface of the lead screw. A connecting rod is hinged to the side wall of the screw block. The top end of the connecting rod is hinged to the bottom of the corresponding sieve plate.

[0009] Further, the orthographic projections of the two sieve plates in the horizontal direction are completely located within the orthographic projection of the guiding plate in the horizontal direction.

[0010] Further, the adjusting part includes a fixing plate fixedly connected to the side wall of the shell. A vertical rod is fixedly connected to the bottom of the fixing plate. A straight rack is slidably sleeved on the lower half of the outer peripheral surface of the vertical rod. A second spring is fixedly connected between the straight rack and the fixing plate. A part of the lead screw extends to the outside of the shell. And a gear is fixedly sleeved on the outer peripheral surface of the lead screw at the part located outside the shell. The gear is meshed with the straight rack. A connecting rope is fixedly connected to the bottom of the guiding plate. The connecting rope slidably passes through the inner bottom wall of the shell. And a linkage part is arranged between the connecting rope and the fixing plate.

[0011] Further, the linkage part includes a side plate fixedly connected to the side wall of the shell. An avoidance opening is formed in the top of the side plate. An electric push rod is fixedly connected to the bottom of the fixing plate. The output end of the electric push rod is fixedly connected with a connecting plate. The connecting plate passes through the avoidance opening. And a driving plate is fixedly connected to the bottom of the connecting plate. A first magnet is fixedly connected to the bottom of the driving plate. A linkage plate is fixedly connected to the end of the connecting rope far away from the guiding plate. A second magnet is fixedly connected to the top of the linkage plate. The first magnet is in contact with the second magnet. A third magnet is fixedly connected to the bottom of the side plate.

[0012] Further, gathering shells are fixedly connected to the side wall of the shell corresponding to the discharge port and the slag discharge port. Both the left and right sides of the gathering shell are open.

[0013] Further, a stirring member is provided in the upper half of the housing.

[0014] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0015] For this fly ash-incorporated solid waste utilization screening device, fly ash is added to the top of the sieve plate through the feed hopper for screening. The qualified fly ash passes through the sieve plate and falls onto the guiding plate, and is discharged through the discharge inclined plate and the discharge port. After the screening is completed, the electric push rod works to drive the guiding plate to rotate, so that the guiding plate fits with the slag discharge inclined plate. Then, the two sieve plates rotate, and the unqualified fly ash falls onto the guiding plate through the gap between the two sieve plates, and is discharged through the slag discharge inclined plate and the slag discharge port, thus facilitating the removal of unqualified fly ash and enabling full screening of fly ash;

[0016] 2. For this fly ash-incorporated solid waste utilization screening device, by stirring the movement of fly ash on the sieve plate with the stirring member, the qualified fly ash can fully pass through the sieve plate, further improving the screening effect of fly ash. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a three-dimensional view of a fly ash-incorporated solid waste utilization screening device according to this embodiment;

[0019] Figure 2 is a front sectional view of a fly ash-incorporated solid waste utilization screening device according to this embodiment;

[0020] Figure 3 is this embodiment Figure 1 an enlarged view of part A;

[0021] Figure 4 is a front sectional view of the linkage part of a fly ash-incorporated solid waste utilization screening device according to this embodiment.

[0022] In the figure, 1 is the housing; 2 is the feed hopper; 3 is the discharge port; 4 is the slag discharge port; 5 is the discharge inclined plate; 6 is the slag discharge inclined plate; 7 is the vertical plate; 8 is the guiding plate; 9 is the first spring; 10 is the adjusting part; 101 is the fixing plate; 102 is the vertical rod; 103 is the straight rack; 104 is the second spring; 105 is the gear; 106 is the connecting rope; 107 is the linkage part; 1071 is the side plate; 1072 is the avoidance opening; 1073 is the electric push rod; 1074 is the connecting plate; 1075 is the driving plate; 1076 is the first magnet; 1077 is the linkage plate; 1078 is the second magnet; 1079 is the third magnet; 11 is the slag discharge part; 111 is the sieve plate; 112 is the lead screw; 113 is the screw block; 114 is the connecting rod; 12 is the converging housing; 13 is the stirring member. Detailed implementation mode

[0023] The following further elaborates on the present utility model in detail with reference to the accompanying drawings.

[0024] Embodiment:

[0025] Refer to Figures 1 to 4 , a screening device for the utilization of fly ash-containing solid waste disclosed by the present utility model includes a housing 1 and a feed hopper 2 fixedly penetrating through the top of the housing 1. Discharge ports 3 and slag discharge ports 4 are respectively formed in the lower half of the opposite side walls of the housing 1. The inner bottom walls of the discharge ports 3 and the slag discharge ports 4 are respectively fixedly connected with a discharge inclined plate 5 and a slag discharge inclined plate 6. Both the discharge inclined plate 5 and the slag discharge inclined plate 6 partially extend into the housing 1. The inner bottom wall of the housing 1 is fixedly connected with a vertical plate 7. The top of the vertical plate 7 is hinged with a guiding plate 8. A plurality of first springs 9 are fixedly connected between the bottom of the guiding plate 8 and the inner bottom wall of the housing 1. When the first springs 9 are in a natural state, the bottom surface of the guiding plate 8 is in contact with the discharge inclined plate 5. An adjusting part 10 is arranged on one side of the housing 1, and a slag discharge part 11 is arranged in the upper half of the housing 1.

[0026] In this embodiment, fly ash enters the housing 1 through the feed hopper 2. Both the discharge inclined plate 5 and the slag discharge inclined plate are inclined downward on the side close to the inner wall of the housing 1. In the initial state, the first springs 9 are in a natural state, and the bottom surface of the guiding plate 8 is in contact with the discharge inclined plate 5. Therefore, the fly ash falling on the guiding plate 8 will slide onto the discharge inclined plate 5 under the action of gravity and pass through the discharge port 3 to discharge from the housing 1.

[0027] In a further preferred embodiment of the present utility model, as Figure 2 shown, the slag discharge part 11 includes two sieve plates 111 hinged to the opposite inner walls of the housing 1. The two sieve plates 111 are in contact with each other. A lead screw 112 is horizontally rotatably connected in the housing 1. Two sections of threads with opposite helix directions are arranged on the outer peripheral surface of the lead screw 112, and screw blocks 113 are threadedly connected to both sections of the threads on the outer peripheral surface of the lead screw 112. A connecting rod 114 is hinged to the side wall of the screw block 113, and the top end of the connecting rod 114 is hinged to the bottom of the corresponding sieve plate 111.

[0028] In this embodiment, in the initial state, the two sieve plates 111 are in contact with each other. Fly ash falls onto the top of the sieve plate 111 through the feed port. The sieve plate 111 screens the fly ash. The qualified fly ash passes through the sieve plate 111 and falls onto the guiding plate 8, and is discharged through the discharge inclined plate 5 and the discharge port 3. The unqualified fly ash remains on the sieve plate 111.

[0029] When the lead screw 112 rotates, it drives the two screw blocks 113 to move in opposite directions. The screw block 113 drives the connecting rod 114 to move, and the connecting rod 114 drives the sieve plate 111 to rotate, so that a gap is generated between the two sieve plates 111. The unqualified fly ash can pass through the gap between the two sieve plates 111 and fall onto the guiding plate 8.

[0030] In a further preferred embodiment of the present utility model, as Figure 2 shown, the positive projections of the two sieve plates 111 in the horizontal direction are completely located within the positive projection of the guiding plate 8 in the horizontal direction.

[0031] In this embodiment, the fly ash passing through the sieve plate 111 will completely fall onto the guiding plate 8. Both the front and rear sides of the sieve plate 111 are in contact with the inner wall of the housing 1, and both the front and rear sides of the guiding plate 8 are in contact with the inner wall of the housing 1.

[0032] In a further preferred embodiment of the present utility model, as Figures 1 to 4 shown, the adjusting part 10 includes a fixing plate 101 fixedly connected to the side wall of the housing 1. A vertical rod 102 is fixedly connected to the bottom of the fixing plate 101. A straight rack 103 is slidably sleeved on the lower half of the outer peripheral surface of the vertical rod 102. A second spring 104 is fixedly connected between the straight rack 103 and the fixing plate 101. A part of the lead screw 112 extends to the outside of the housing 1, and a gear 105 is fixedly sleeved on the outer peripheral surface of the lead screw 112 at the position outside the housing 1. The gear 105 meshes with the straight rack 103. A connecting rope 106 is fixedly connected to the bottom of the guiding plate 8. The connecting rope 106 slidably passes through the inner bottom wall of the housing 1, and a linkage part 107 is arranged between the connecting rope 106 and the fixing plate 101.

[0033] The linkage part 107 includes a side plate 1071 fixedly connected to the side wall of the housing 1. An avoidance opening 1072 is formed at the top of the side plate 1071. An electric push rod 1073 is fixedly connected to the bottom of the fixing plate 101. The output end of the electric push rod 1073 is fixedly connected with a connecting plate 1074. The connecting plate 1074 passes through the avoidance opening 1072, and a driving plate 1075 is fixedly connected to the bottom of the connecting plate 1074. A first magnet 1076 is fixedly connected to the bottom of the driving plate 1075. One end of the connecting rope 106 far from the guiding plate 8 is fixedly connected with a linkage plate 1077. A second magnet 1078 is fixedly connected to the top of the linkage plate 1077. The first magnet 1076 is in contact with the second magnet 1078. A third magnet 1079 is fixedly connected to the bottom of the side plate 1071.

[0034] In this embodiment, in the initial state, the second spring 104 is in a natural state. The first magnet 1076 and the second magnet 1078 are arranged with opposite magnetic polarities, and the third magnet 1079 and the second magnet 1078 are arranged with opposite magnetic polarities. The driving plate 1075 can move upward through the avoidance opening 1072, and the driving plate 1075 is located directly below the straight rack 103. When the driving plate 1075 moves upward, it will contact the straight rack 103.

[0035] In the initial state, the first magnet 1076 and the second magnet 1078 are in contact with each other, and the driving plate 1075 is located below the side plate 1071. After the fly ash screening is completed, the electric push rod 1073 works to drive the driving plate 1075 to move upward. The driving plate 1075 drives the linkage plate 1077 to move upward synchronously through the magnetic adsorption force between the first magnet 1076 and the second magnet 1078. The linkage plate 1077 pulls the connecting rope 106 to move, and the connecting rope 106 pulls the guiding plate 8 to rotate, and the first spring 9 elongates.

[0036] When the linkage plate 1077 moves upward to fit against the bottom surface of the side plate 1071, the linkage plate 1077 cannot pass through the avoidance opening 1072, and the second magnet 1078 and the third magnet 1079 are adsorbed and fitted together. At this time, the bottom surface of the guiding plate 8 is in contact with the slag discharge inclined plate 6, and the adsorption force between the second magnet 1078 and the third magnet 1079 is greater than the restoring force of the first spring 9 at this time. The electric push rod 1073 continues to work, driving the driving plate 1075 to continue moving upward. The driving plate 1075 separates from the linkage plate 1077. The driving plate 1075 moves upward to contact the straight rack 103, pushing the straight rack 103 to move upward. The straight rack 103 drives the gear 105 and the lead screw 112 to rotate. The rotation of the lead screw 112 drives the two sieve plates 111 to rotate. The unqualified fly ash falls onto the guiding plate 8 through the gap between the two sieve plates 111 and is discharged from the housing 1 through the slag discharge inclined plate 6 and the slag discharge port 4.

[0037] After all the unqualified fly ash is discharged from the housing 1, the electric push rod 1073 moves in the reverse direction, driving the driving plate 1075 to move downward to its original position. During this process, the straight rack 103 returns to its original position under the restoring force of the second spring 104. The driving plate 1075 pushes the linkage plate 1077 to move downward, and the guiding plate 8 returns to its original position under the restoring force of the first spring 9.

[0038] In a further preferred embodiment of the present utility model, as Figure 2 shown, gathering shells 12 are fixedly connected to the side walls of the housing 1 corresponding to the discharge port 3 and the slag discharge port 4. Both the left and right sides of the gathering shell 12 are open.

[0039] In this embodiment, the connecting rope 106 slides through the corresponding gathering shell 12, and the gathering shell 12 gathers the fly ash discharged from the housing 1, facilitating the staff to collect the fly ash.

[0040] In a further preferred embodiment of the present utility model, as Figure 2 shown, a stirring member 13 is provided in the upper half of the housing 1.

[0041] In this embodiment, the stirring member 13 includes a motor fixedly connected to the side wall of the housing 1. The output end of the motor is drivingly connected with a reciprocating lead screw. A sliding strip is threadedly connected to the outer peripheral surface of the reciprocating lead screw. The sliding strip is slidably connected within the housing 1. A plurality of stirring plates are fixedly connected to the bottom of the sliding strip, and the bottom surface of the stirring plate is in contact with the top surface of the sieve plate 111. During the fly ash screening process, the motor operates to drive the stirring plate to reciprocate horizontally, thereby driving the fly ash on the sieve plate 111 to move, enabling the qualified fly ash to fully pass through the sieve plate 111, further improving the screening effect of the fly ash.

[0042] The implementation principle of the above embodiment is as follows:

[0043] Fly ash falls onto the sieve plate 111 through the feed hopper 2. The stirring member 13 operates to stir the fly ash. The qualified fly ash passes through the sieve plate 111 and falls onto the guiding plate 8, and is discharged through the discharge inclined plate 5 and the discharge port 3. The unqualified fly ash remains on the sieve plate 111.

[0044] When the fly ash screening is completed, the electric push rod 1073 operates to drive the driving plate 1075 to move upward. The driving plate 1075 drives the linkage plate 1077 to move upward synchronously through the magnetic adsorption force between the first magnet 1076 and the second magnet 1078. The linkage plate 1077 pulls the connecting rope 106 to move, and the connecting rope 106 pulls the guiding plate 8 to rotate. The first spring 9 elongates until the linkage plate 1077 is in contact with the side plate 1071 and the second magnet 1078 is in contact with the third magnet 1079. At this time, the bottom surface of the guiding plate 8 is in contact with the slag discharge inclined plate 6. The electric push rod 1073 continues to operate, driving the driving plate 1075 to continue moving upward. The driving plate 1075 separates from the linkage plate 1077. The driving plate 1075 moves upward to contact the straight rack 103, pushing the straight rack 103 to move upward. The straight rack 103 drives the gear 105 and the lead screw 112 to rotate. The rotation of the lead screw 112 drives the two sieve plates 111 to rotate. The unqualified fly ash falls onto the guiding plate 8 through the gap between the two sieve plates 111 and is discharged from the housing 1 through the slag discharge inclined plate 6 and the slag discharge port 4.

[0045] After the unqualified fly ash is completely discharged from the housing 1, the electric push rod 1073 moves in the reverse direction, driving the driving plate 1075 to move downward to its original position. During this process, the straight rack 103 returns to its original position under the restoring force of the second spring 104, the driving plate 1075 pushes the linkage plate 1077 to move downward, and the guiding plate 8 returns to its original position under the restoring force of the first spring 9.

[0046] The embodiments of this specific implementation manner are all preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model shall be covered within the protection scope of the present utility model.

Claims

1. A screening device for the utilization of fly ash-incorporated solid waste, comprising a housing (1) and a feed hopper (2) fixedly penetrating through the top of the housing (1), characterized in that: On the lower parts of the opposite side walls of the housing (1), a material discharge port (3) and a slag discharge port (4) are respectively provided. On the inner bottom walls of the material discharge port (3) and the slag discharge port (4), a material discharge inclined plate (5) and a slag discharge inclined plate (6) are respectively fixedly connected. The material discharge inclined plate (5) and the slag discharge inclined plate (6) both partially extend into the housing (1). On the inner bottom wall of the housing (1), a vertical plate (7) is fixedly connected. At the top of the vertical plate (7), a guiding plate (8) is hinged. Between the bottom of the guiding plate (8) and the inner bottom wall of the housing (1), a plurality of first springs (9) are fixedly connected. When the first springs (9) are in a natural state, the bottom surface of the guiding plate (8) is in contact with the material discharge inclined plate (5). On one side of the housing (1), an adjusting part (10) is provided. In the upper half of the housing (1), a slag discharging part (11) is provided.

2. The screening device for the utilization of fly ash-containing solid waste according to claim 1, characterized in that: The slag discharging part (11) includes two sieve plates (111) hinged to the opposite inner walls of the housing (1). The two sieve plates (111) are in contact with each other. A lead screw (112) is horizontally rotatably connected in the housing (1). On the outer peripheral surface of the lead screw (112), there are two threads with opposite helix directions. And on both threads of the outer peripheral surface of the lead screw (112), a nut block (113) is threadedly connected. The side wall of the nut block (113) is hinged with a connecting rod (114). The top end of the connecting rod (114) is hinged to the bottom of the corresponding sieve plate (111).

3. The screening device for utilization of fly ash-containing solid waste according to claim 2, wherein: The horizontal orthographic projections of the two sieve plates (111) are all completely located within the horizontal orthographic projection of the guiding plate (8).

4. A screening device for the utilization of fly ash-incorporated solid waste according to claim 3, characterized in that: The adjusting part (10) includes a fixing plate (101) fixedly connected to the side wall of the housing (1). At the bottom of the fixing plate (101), a vertical rod (102) is fixedly connected. On the lower half of the outer peripheral surface of the vertical rod (102), a straight rack (103) is slidably sleeved. Between the straight rack (103) and the fixing plate (101), a second spring (104) is fixedly connected. A part of the lead screw (112) extends to the outside of the housing (1). And on the outer peripheral surface of the lead screw (112) at the outside of the housing (1), a gear (105) is fixedly sleeved. The gear (105) is meshed with the straight rack (103). A connecting rope (106) is fixedly connected to the bottom of the guiding plate (8). The connecting rope (106) slidably passes through the inner bottom wall of the housing (1). And between the connecting rope (106) and the fixing plate (101), a linkage part (107) is provided.

5. A screening device for the utilization of fly ash-incorporated solid waste according to claim 4, characterized in that: The linkage part (107) includes a side plate (1071) fixedly connected to the side wall of the housing (1). An avoidance opening (1072) is formed at the top of the side plate (1071). An electric push rod (1073) is fixedly connected to the bottom of the fixing plate (101). The output end of the electric push rod (1073) is fixedly connected to a connecting plate (1074). The connecting plate (1074) passes through the avoidance opening (1072), and a driving plate (1075) is fixedly connected to the bottom of the connecting plate (1074). A first magnet (1076) is fixedly connected to the bottom of the driving plate (1075). One end of the connecting rope (106) far from the guiding plate (8) is fixedly connected to a linkage plate (1077). A second magnet (1078) is fixedly connected to the top of the linkage plate (1077). The first magnet (1076) is attached to the second magnet (1078). A third magnet (1079) is fixedly connected to the bottom of the side plate (1071).

6. The screening device for the utilization of fly ash-incorporated solid waste according to claim 5, characterized in that: Gathering shells (12) are fixedly connected to the side wall of the housing (1) corresponding to the material discharge port (3) and the slag discharge port (4). Both the left and right sides of the gathering shell (12) are open.

7. The screening device for utilization of fly ash-containing solid waste according to claim 6, characterized in that: A stirring member (13) is arranged in the upper half of the housing (1).

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