A sludge feeding device

Abstract

The present application provides a sludge feeding device, which belongs to the technical field of sludge transportation equipment, and includes a sludge hopper and a screw conveyor connected to the bottom thereof; a buffer frame vertically slidably connected to the inside of the sludge hopper, and a tension spring is arranged between the sludge hopper and the buffer frame; two guide plates hinged at the middle of the buffer frame, and the two guide plates are symmetrically arranged with their own hinge axes on the buffer frame as a reference, and the inner wall of the sludge hopper is provided with horizontal guide grooves matching the guide plates; two blocking frames hinged at the bottom of the buffer frame, and the blocking frames are located directly below the guide plates and directly above the discharge port of the sludge hopper; the present application can weaken the impact potential energy of the sludge when it falls, thereby reducing the probability of the conveying auger inside the screw conveyor being offset and damaged due to the impact of the sludge.

Description

Technical Field

[0001] The present application relates to the technical field of sludge transport equipment, and in particular to a sludge feeding device. Background Art

[0002] Sludge feeding usually refers to the process of transporting sludge to treatment equipment or treatment systems for treatment. In the field of sludge treatment, various equipment (such as sludge delivery pumps, screw conveyors and conveyor belts, etc.) are usually used to transport sludge from the collection point to the treatment equipment to achieve sludge treatment and cleaning.

[0003] At present, the sludge feeding work is usually carried out by a sludge hopper to receive the sludge fed, and after the sludge temporarily stored in the sludge hopper enters the screw conveyor, the screw conveyor then conveys the sludge to the lower sludge treatment unit for treatment.

[0004] Referring to the Chinese patent application document with publication number CN116424793A and publication date July 14, 2023, entitled A sludge conveying device and a conveying method thereof, it includes a sludge storage box and a transport mechanism, which can adjust the pipe diameter of the pipeline assembly according to the moisture content of the sludge, so as to select a suitable pipe diameter according to the characteristics of different sludges, thereby improving transportation efficiency.

[0005] Referring to the above technical solution, in the process of sludge entering the screw conveyor from the sludge hopper, the feed port of the screw conveyor is usually arranged directly below the discharge port of the sludge hopper. When a large amount of sludge falls inside the sludge hopper, the impact potential energy of the sludge when falling will gradually increase due to the influence of gravity acceleration. After the sludge enters the screw conveyor, the conveying auger inside the screw conveyor may be impacted by the sludge and become offset and damaged, making it difficult for the conveying auger to rotate normally inside the screw conveyor, thereby resulting in the inability to effectively carry out the subsequent conveying of the sludge. Summary of the invention

[0006] In view of this, the present application provides a sludge feeding device, which is mainly used to solve the problem that the conveying auger inside the screw conveyor is damaged by the impact potential energy generated when a large amount of sludge falls.

[0007] In order to solve the above-mentioned technical problems, the present application provides a sludge feeding device, including a sludge hopper and a screw conveyor connected to the bottom thereof; a buffer frame vertically slidably connected to the inside of the sludge hopper, a tension spring being arranged between the sludge hopper and the buffer frame; two guide plates hinged at the middle of the buffer frame, and the two guide plates are symmetrically arranged with respect to their hinge axes on the buffer frame as a reference, and a horizontal guide groove matching the guide plates is provided on the inner wall of the sludge hopper; two blocking frames hinged at the bottom of the buffer frame, the blocking frames being located directly below the guide plates and directly above the discharge port of the sludge hopper.

[0008] By adopting the above technical solution, when a large amount of sludge is dumped into the sludge hopper, the buffer rack, the guide plate and the blocking rack are used to separate and buffer the sludge step by step, so as to weaken the impact potential energy of the sludge when it falls.

[0009] Optionally, a plurality of buffer plates are arranged inside the sludge hopper, and a plurality of avoidance openings corresponding to the buffer plates one by one are opened on the buffer frame.

[0010] By adopting the above technical solution, during the falling process of the buffer rack, the buffer plate cooperates with the buffer rack to further disperse a large amount of sludge, which is beneficial to the buffering work.

[0011] Optionally, both of the two blocking frames can abut against the inclined bottom wall of the sludge hopper, and a plurality of frame beams on the two blocking frames are staggered in a one-to-one interval manner, and both hinged ends of the two blocking frames are provided with rake claws.

[0012] By adopting the above technical solution, when the sludge is discharged from the discharge port at the bottom of the sludge hopper, the rake claws can be used to force the sludge to move toward the discharge port at the bottom of the sludge hopper.

[0013] Optionally, the length of the blocking frame is greater than the length of the rake claw, and both blocking frames are provided with a limiting plate matching the rake claw.

[0014] By adopting the above technical solution, the center of gravity of the whole composed of the blocking frame and the rake claw will be maintained on the blocking frame. Under normal conditions, when the whole composed of the blocking frame and the rake claw is rotated to a horizontal state with the hinged end of the blocking frame as a reference, the rake claw will abut against the limit plate to keep the blocking frame in a horizontal static state.

[0015] Optionally, the buffer frame is internally rotatably connected with a plurality of stirring shafts, each stirring shaft is provided with two stirring blades, and a plurality of pulling ropes are provided between the two stirring blades on the same stirring shaft, and a linkage is provided between the buffer frame and the guide plate, which is used to rotate the stirring shaft when the buffer frame undergoes vertical displacement.

[0016] By adopting the above technical solution, when the buffer frame moves vertically downward inside the sludge hopper, the stirring shaft, the stirring blades and the pull rope will rotate together to stir the sludge through the cooperation of the linkage parts.

[0017] Optionally, the linkage comprises two racks slidably connected to the inside of the buffer frame via elastic members, a gear capable of meshing with the racks is provided in the middle of the stirring shaft, and a traction rope capable of driving the two racks to slide when the buffer frame undergoes vertical displacement is provided at the bottom of the two guide plates.

[0018] By adopting the above technical solution, when the buffer rack moves vertically downward inside the sludge hopper, the traction rope will be tightened as the guide plate is unfolded, so that the two racks will slide inside the buffer rack. Under the influence of the meshing connection relationship between the rack and the gear, the stirring shaft will rotate accordingly.

[0019] Optionally, the buffer rack and the material guide plate are both provided with guide wheels matching the traction rope.

[0020] By adopting the above technical solution, when the traction rope pulls the rack as the guide plate is unfolded, the guide wheel can provide a certain steering support for the traction rope.

[0021] Optionally, the stirring blade on the stirring shaft close to the gear side is sleeved on the central axis of the stirring shaft in a fixed connection manner, and the stirring blade on the stirring shaft away from the gear side is sleeved on the main shaft of the stirring shaft in a rotatable connection manner.

[0022] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0023] 1. When a large amount of sludge is dumped into the sludge hopper, the large amount of sludge is dispersed into multiple small batches of independent individuals by step-by-step partitioning and buffering, so as to weaken the impact potential energy of the sludge when it falls, thereby reducing the probability of the conveying auger inside the screw conveyor being offset and damaged due to the impact of the sludge.

[0024] 2. During the discharge of sludge from the sludge hopper, the sludge is urged to move toward the discharge port at the bottom of the sludge hopper by means of raking claws, thereby reducing the probability of sludge accumulation at the bottom of the sludge hopper due to buffering and deceleration.

[0025] 3. During the falling process of the sludge, the sludge can be stirred and broken up to a certain extent, and when the sludge originally in a vertical falling state is subjected to a stirring force different from its own falling direction, the falling speed of the sludge will be further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a sludge feeding device for this application;

[0027] Figure 2 A cross-sectional view of the sludge hopper for this application;

[0028] Figure 3 For this application Figure 2 A partial enlarged view of the middle area A;

[0029] Figure 4 This is a front cross-sectional view of the sludge hopper of this application;

[0030] Figure 5This is a schematic diagram of the structure of the blocking frame of this application;

[0031] Figure 6 A cross-sectional view of the buffer rack of this application;

[0032] Figure 7 For this application Figure 6 A partial enlarged view of the middle area B;

[0033] Figure 8 For this application Figure 2 A partial enlarged view of area C in the middle.

[0034] Explanation of the accompanying drawings: 1. Sludge hopper; 2. Screw conveyor; 3. Buffer frame; 31. Tension spring; 32. Guide plate; 33. Horizontal guide groove; 34. Buffer plate; 4. Blocking frame; 41. Rake claw; 42. Limit plate; 5. Agitator shaft; 51. Agitator blade; 52. Drag rope; 6. Linkage member; 61. Rack; 62. Elastic member; 63. Gear; 64. Traction rope; 65. Guide wheel. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 8 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0036] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides a sludge feeding device, including a sludge hopper 1 and a screw conveyor 2 connected to the bottom thereof.

[0037] A buffer frame 3 is vertically slidably connected inside the sludge hopper 1, and the buffer frame 3 is a T-shaped structure. A tension spring 31 is arranged between the sludge hopper 1 and the buffer frame 3. Two guide plates 32 are hingedly connected to the middle part of the buffer frame 3, and the two guide plates 32 are symmetrically arranged with their own hinge axes on the buffer frame 3 as a reference. The inner wall of the sludge hopper 1 is provided with a horizontal guide groove 33 matching the guide plate 32. Two blocking frames 4 are hingedly connected to the bottom of the buffer frame 3, and the blocking frames 4 are located directly below the guide plates 32 and directly above the discharge port of the sludge hopper 1.

[0038] When a large amount of sludge is dumped into the sludge hopper 1, the buffer frame 3 will overcome the tension of the tension spring 31 due to the gravity of the sludge and move vertically downward inside the sludge hopper 1. At this time, the two guide plates 32 will be horizontally expanded along the horizontal guide groove 33, and the two blocking frames 4 will also move downward with the buffer frame 3 and gradually approach the discharge port at the bottom of the sludge hopper 1. The buffer frame 3, the guide plate 32 and the blocking frame 4 are used to separate and buffer the sludge step by step, so that a large amount of sludge is dispersed into multiple small batches of independent individuals, thereby weakening the impact potential energy of the sludge when it falls, thereby reducing the probability of the conveying auger inside the screw conveyor 2 being offset and damaged due to the impact of the sludge.

[0039] Reference Figure 2 and Figure 4 A plurality of buffer plates 34 are arranged inside the sludge hopper 1 , and a plurality of avoidance openings corresponding to the buffer plates 34 are opened on the buffer frame 3 .

[0040] During the falling process of the buffer rack 3, the buffer plate 34 cooperates with the buffer rack 3 to further disperse a large amount of sludge, which is beneficial to the buffering work.

[0041] Reference Figure 2 , Figure 4 and Figure 5 The two blocking frames 4 can both abut against the inclined bottom wall of the sludge hopper 1, and the multiple frame beams on the two blocking frames 4 are staggered in a one-to-one interval form, and the hinged ends of the two blocking frames 4 are both provided with rake claws 41.

[0042] When the two blocking frames 4 move downward along with the buffer frame 3, the two blocking frames 4 will abut against the inclined bottom wall of the sludge hopper 1, so that the two blocking frames 4 will rotate appropriately based on their own hinged ends, so that the two blocking frames 4 can correctly adapt to the size of the discharge port at the bottom of the sludge hopper 1 when the sludge falls. At the same time, the rake claws 41 arranged at the hinged ends of the two blocking frames 4 will prompt the sludge to move toward the discharge port at the bottom of the sludge hopper 1, thereby reducing the probability of sludge accumulation at the bottom of the sludge hopper 1 due to buffering and deceleration.

[0043] Reference Figure 2 , Figure 4 and Figure 5 The length of the blocking frame 4 is greater than the length of the rake claw 41 , and both blocking frames 4 are provided with a limiting plate 42 matching the rake claw 41 .

[0044] Since the length of the blocking frame 4 is greater than the length of the rake claw 41, the center of gravity of the whole composed of the blocking frame 4 and the rake claw 41 will remain on the blocking frame 4. Under normal conditions, when the whole composed of the blocking frame 4 and the rake claw 41 is rotated to a horizontal state with the hinged end of the blocking frame 4 as a reference, the rake claw 41 will abut against the limit plate 42 to keep the blocking frame 4 in a horizontal static state.

[0045] Reference Figure 2 , Figure 4 and Figure 6 A plurality of stirring shafts 5 are rotatably connected inside the buffer frame 3, two stirring blades 51 are provided on each stirring shaft 5, and a plurality of pulling ropes 52 are provided between the two stirring blades 51 on the same stirring shaft 5, and a linkage 6 is provided between the buffer frame 3 and the guide plate 32, which is used to rotate the stirring shaft 5 when the buffer frame 3 is vertically displaced.

[0046] When the buffer rack 3 moves vertically downward inside the sludge hopper 1, with the cooperation of the linkage 6, the stirring shaft 5, the stirring blades 51 and the pull rope 52 will rotate together to stir the sludge, and the sludge originally in a vertical falling state will be further reduced when it is subjected to a stirring force different from its own falling direction.

[0047] Reference Figure 2 , Figure 4 , Figure 6 and Figure 7 The linkage member 6 includes a rack 61, an elastic member 62, a gear 63 and a traction rope 64. The buffer frame 3 has two racks 61 slidably connected thereto through the elastic member 62, the middle of the stirring shaft 5 is provided with a gear 63 capable of meshing with the rack 61, and the bottom of the two guide plates 32 is provided with a traction rope 64 capable of driving the two racks 61 to slide when the buffer frame 3 is vertically displaced.

[0048] When the buffer rack 3 moves vertically downward inside the sludge hopper 1, the traction rope 64 will be tightened as the guide plate 32 is unfolded, so that the two racks 61 slide inside the buffer rack 3, and the agitator shaft 5 rotates accordingly due to the meshing connection between the racks 61 and the gears 63.

[0049] Reference Figure 7 and Figure 8 The buffer frame 3 and the guide plate 32 are both provided with guide wheels 65 matching with the traction rope 64 .

[0050] When the traction rope 64 pulls the rack 61 as the guide plate 32 is unfolded, the guide wheel 65 can provide a certain steering support for the traction rope 64 , thereby reducing the probability of wear of the traction rope 64 .

[0051] Reference Figure 6 The stirring blade 51 on the stirring shaft 5 close to the gear 63 is sleeved on the central axis of the stirring shaft 5 in a fixed connection manner, and the stirring blade 51 on the stirring shaft 5 away from the gear 63 is sleeved on the main shaft of the stirring shaft 5 in a rotational connection manner.

[0052] When the stirring shaft 5 rotates, the stirring blade 51 fixedly connected to the stirring shaft 5 will rotate accordingly. At this time, the stirring blade 51 fixedly connected to the stirring shaft 5 will prompt the pulling rope 52 to be transformed into a spirally tightened state, and then the stirring blade 51 connected to the stirring shaft 5 will rotate driven by the pulling rope 52, so that the stirring direction of the sludge by the pulling rope 52 changes, which is beneficial to the sludge buffering work.

[0053] The implementation principle of a sludge feeding device in the embodiment of the present application is:

[0054] When a large amount of sludge is dumped into the sludge hopper 1, the buffer frame 3 will overcome the tension of the tension spring 31 due to the gravity of the sludge and move vertically downward inside the sludge hopper 1. At this time, the two guide plates 32 will be horizontally expanded along the horizontal guide groove 33, and the two blocking frames 4 will also move downward with the buffer frame 3 and gradually approach the discharge port at the bottom of the sludge hopper 1. The buffer frame 3, the guide plate 32 and the blocking frame 4 are used to separate and buffer the sludge step by step, so that a large amount of sludge is dispersed into multiple small batches of independent individuals, thereby weakening the impact potential energy of the sludge when it falls, thereby reducing the probability of the conveying auger inside the screw conveyor 2 being offset and damaged due to the impact of the sludge.

[0055] When the buffer rack 3 moves vertically downward inside the sludge hopper 1, with the cooperation of the linkage 6, the stirring shaft 5, the stirring blades 51 and the pull rope 52 will rotate together to stir the sludge, and the sludge originally in a vertical falling state will be further reduced when it is subjected to a stirring force different from its own falling direction.

[0056] When the two blocking frames 4 move downward along with the buffer frame 3, the two blocking frames 4 will abut against the inclined bottom wall of the sludge hopper 1, so that the two blocking frames 4 will rotate appropriately based on their own hinged ends, so that the two blocking frames 4 can correctly adapt to the size of the discharge port at the bottom of the sludge hopper 1 when the sludge falls. At the same time, the rake claws 41 arranged at the hinged ends of the two blocking frames 4 will prompt the sludge to move toward the discharge port at the bottom of the sludge hopper 1, thereby reducing the probability of sludge accumulation at the bottom of the sludge hopper 1 due to buffering and deceleration.

[0057] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A sludge feeding device, comprising a sludge hopper (1) and a screw conveyor (2) connected to the bottom thereof, characterized in that: Also includes: A buffer frame (3) vertically slidably connected to the interior of the sludge hopper (1), a tension spring (31) being provided between the sludge hopper (1) and the buffer frame (3); Two guide plates (32) are hingedly connected to the middle of the buffer frame (3), and the two guide plates (32) are symmetrically arranged with their hinge axes on the buffer frame (3) as a reference, and the inner wall of the sludge hopper (1) is provided with a horizontal guide groove (33) matching the guide plates (32); Two blocking frames (4) hingedly connected to the bottom of the buffer frame (3), the blocking frames (4) being located directly below the guide plate (32) and directly above the discharge port of the sludge hopper (1); The buffer frame (3) is internally rotatably connected to a plurality of stirring shafts (5), each stirring shaft (5) is provided with two stirring blades (51), and a plurality of pull ropes (52) are provided between the two stirring blades (51) on the same stirring shaft (5), and a linkage member (6) is provided between the buffer frame (3) and the guide plate (32) for rotating the stirring shaft (5) when the buffer frame (3) is vertically displaced; The linkage member (6) comprises two racks (61) slidably connected to the inside of the buffer frame (3) via elastic members (62); a gear (63) capable of meshing with the racks (61) is disposed in the middle of the stirring shaft (5); and a traction rope (64) capable of driving the two racks (61) to slide when the buffer frame (3) undergoes vertical displacement is disposed at the bottom of the two guide plates (32).

2. A sludge feeding device according to claim 1, characterized in that: A plurality of buffer plates (34) are arranged inside the sludge hopper (1), and a plurality of avoidance openings corresponding one to one with the buffer plates (34) are provided on the buffer frame (3).

3. A sludge feeding device according to claim 1, characterized in that: The two blocking frames (4) are both capable of abutting against the inclined bottom wall of the sludge hopper (1), and a plurality of frame beams on the two blocking frames (4) are staggered in a one-to-one interval manner, and the hinged ends of the two blocking frames (4) are both provided with rake claws (41).

4. A sludge feeding device according to claim 3, characterized in that: The length of the blocking frame (4) is greater than the length of the rake claw (41), and both blocking frames (4) are provided with a limit plate (42) matching the rake claw (41).

5. A sludge feeding device according to claim 1, characterized in that: The buffer frame (3) and the material guide plate (32) are both provided with guide wheels (65) matching the traction rope (64).

6. A sludge feeding device according to claim 1, characterized in that: The stirring blade (51) on the stirring shaft (5) close to the gear (63) is sleeved on the central axis of the stirring shaft (5) in a fixed connection manner, and the stirring blade (51) on the stirring shaft (5) away from the gear (63) is sleeved on the main shaft of the stirring shaft (5) in a rotationally connected manner.

Images