A new shredding device for the pretreatment of metal dry sludge

Abstract

The utility model relates to dry sludge fragmentation technical field especially is a kind of new fragmentation device for the pretreatment of metal dry sludge, including horizontal fragmentation cylinder, and one motor set is equipped in horizontal fragmentation cylinder outer end side portion, and motor set driving shaft extends to inside by penetrating horizontal fragmentation cylinder, and one transverse placement rotating rod is equipped in horizontal fragmentation cylinder axis, and rotating rod one end is connected with horizontal fragmentation cylinder inner wall by sleeve setting mode, and rotating rod one end is connected with motor set driving shaft, and motor set driving shaft drives rotating rod axial rotation;Rotating rod surface layer includes push plate and cutter group, and cutter group includes multiple arrayed main cutters, and multiple vice cutters are equipped in array on main cutter;While push plate end portion is equipped with the scraper that is contacted with horizontal fragmentation cylinder inner wall;The technical scheme is that the vice cutter that is equipped is additionally added on the basis of existing main cutter, so as to increase cutter and metal dry sludge cutting surface and cutting angle in cylinder body, can optimize its fragmentation effect.

Description

Technical Field

[0001] This utility model relates to the field of dry sludge shredding technology, and in particular to a novel shredding device for pretreatment of dry metal sludge. Background Technology

[0002] Heavy metals are a key factor limiting the large-scale application of sewage sludge. While the composition of sewage sludge varies considerably depending on its source, it generally contains a certain amount of heavy metals. Heavy metals such as lead, cadmium, arsenic, and mercury can be concentrated and enter the sludge during wastewater treatment, exerting long-term pollution and toxic effects on soil and aquatic environments. Current research on soil pollution caused by sewage sludge application mainly focuses on the migration and accumulation of heavy metals such as mercury, lead, cadmium, and arsenic, and their impact on plant growth and soil health.

[0003] In existing metal sludge treatment processes, there are two methods: dry metal sludge treatment and wet metal sludge treatment. Dry sludge treatment mainly involves drying and thawing wet sludge before further processing. Before processing, the sludge needs to be crushed to form fine particles, thereby reducing the difficulty of subsequent sludge processing.

[0004] In the process of metal dry sludge crushing, common phenomena include the following aspects: (1) The metal dry sludge may still contain too much moisture, which is usually due to the failure of the previous drying process to completely remove the moisture from the sludge. Incompletely dried sludge tends to be wet during the crushing process, causing the sludge to adhere to the inner wall of the crusher's cavity. This not only affects the crushing effect but may also increase the difficulty of cleaning and maintaining the equipment; (2) The existing crushing method generally uses a crushing cutter added to the rotating shaft in the center of the cavity for processing; however, during the crushing process, finely crushed dry sludge often adheres to the inner wall of the cavity, affecting the overall crushing efficiency. To solve this problem, many crushers have also installed scraper assemblies on the inner wall of the cavity to scrape off the sludge adhering to the inner wall. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] A novel shredding device for pretreatment of dry metal sludge includes a frame on which a horizontal shredding cylinder is assembled. The upper end of the horizontal shredding cylinder has a feed hopper, and the lower end has a discharge hopper. A motor unit is located on the outer side of the horizontal shredding cylinder, with its drive shaft extending through the cylinder into its interior. A horizontally positioned rotating rod is located at the center of the cylinder's shaft. One end of the rotating rod is connected to the inner wall of the cylinder via a sleeve, and the other end is connected to the motor unit's drive shaft, which drives the rotating rod to rotate axially. The rotating rod's surface includes a push plate and a cutter assembly. The cutter assembly includes multiple arrayed main cutters, each with multiple arrayed secondary cutters. Simultaneously, the push plate's end has a scraper that contacts the inner wall of the horizontal shredding cylinder.

[0007] Furthermore, multiple main cutting blades are arranged in a row along the X-axis direction of the rotation axis.

[0008] Furthermore, the main cutting blades are divided into two groups, and the pusher plate is one group in the shape of a plate. The two groups of main cutting blades and the pusher plate are equidistantly distributed on the axial section of the rotating shaft.

[0009] Furthermore, the horizontal shredder has an assembly layer on the other end wall opposite to the motor unit, and an electric heating tube is installed in the assembly layer. The inner wall of the horizontal shredder near the electric heating tube is made of thermally conductive aluminum or copper.

[0010] Furthermore, the inner wall of the horizontal crushing cylinder, as well as the push plate, cutter assembly, and rotating rod, are coated with an anti-sticking material, which is made of polytetrafluoroethylene or ceramic coating.

[0011] Furthermore, a screen communicating with the outside is provided on the lower surface of the horizontal crushing drum, and a collection bucket with an open top is provided at the lower end of the horizontal crushing drum.

[0012] Furthermore, a bearing for mounting the rotating shaft is provided on the inner wall of the horizontal crushing cylinder, and a frame for fixing the motor unit is provided on the outer wall of the horizontal crushing cylinder.

[0013] The beneficial effects of this utility model are:

[0014] (1) A secondary cutter is added on the basis of the existing main cutter, thereby increasing the cutting surface and cutting angle of the cutter and the metal dry sludge in the cylinder, which can optimize its crushing effect.

[0015] (2) At the same time, a push plate and a scraper at the end of the push plate are added to the surface of the rotating rod to achieve the stirring and agitation of the internal dry metal sludge, thereby ensuring that the dry metal sludge and the cutter are in further full contact, and at the same time, the inside of the cylinder is scraped and cleaned to reduce the adhesion of the inner wall of the cylinder.

[0016] (3) The internal heating tube and heat-conducting material are combined to form internal heating treatment of the cylinder, further evaporating the moisture in the sludge and improving the internal crushing effect.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the axial cross-section of this utility model.

[0020] The attached diagrams are labeled as follows: Frame-1, Horizontal Crusher-2, Feed Hopper-3, Discharge Hopper-4, Motor Unit-5, Rotating Rod-6, Push Plate-7, Secondary Cutter-8, Scraper-9, Assembly Layer-10, Electric Heating Element-11, Anti-sticking Material-12, Collection Bucket-13, Bearing-14, Frame-15, Main Cutter-16. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] It should be noted that the directional terms such as up, down, front, back, left, and right used in this application are all in the form of... Figure 1 Based on the orientation shown, the present invention will be further described below with reference to the accompanying drawings.

[0023] Please see Figures 1-2This utility model includes a frame 1, on which a horizontal crushing cylinder 2 is assembled. The upper end of the horizontal crushing cylinder 2 is provided with a feed hopper 3, and the lower end of the horizontal crushing cylinder 2 is provided with a discharge hopper 4. A motor unit 5 is provided on the outer side of the horizontal crushing cylinder 2. The drive shaft of the motor unit 5 extends through the horizontal crushing cylinder 2 into the interior. A horizontally placed rotating rod 6 is provided at the axis of the horizontal crushing cylinder 2. One end of the rotating rod 6 is connected to the inner wall of the horizontal crushing cylinder 2 by a sleeve, and the other end of the rotating rod 6 is connected to the drive shaft of the motor unit 5. The drive shaft of the motor unit 5 drives the rotating rod 6 to rotate axially. The surface of the rotating rod 6 includes a push plate 7 and a cutter assembly. The cutter assembly includes multiple arrayed main cutters 16, and multiple auxiliary cutters 8 are arrayed on the main cutters 16. At the same time, the end of the push plate 7 is provided with a scraper 9 that contacts the inner wall of the horizontal crushing cylinder 2.

[0024] The shredding equipment primarily utilizes a support platform 1 as its foundation, supporting the horizontal shredding cylinder 2 and collection tank 13. The horizontal shredding cylinder 2 is designed to be placed horizontally. The stable structure of the support platform 1 ensures the overall stability and smooth operation of the equipment. A feed hopper 3 is located at the upper end of the horizontal shredding cylinder 2, used to feed the dry metal sludge to be shredded into the cylinder by gravity or mechanical means. A discharge hopper 4 is located at the lower end of the horizontal shredding cylinder 2, working in conjunction with a screen connected to the outside at the lower surface of the cylinder. The screen's function is to separate the shredded sludge particles, ensuring that materials of suitable particle size are discharged promptly. The screen aperture can be adjusted according to processing requirements to screen out particles that meet specifications. Meanwhile, larger particles that do not pass through the screen remain inside the horizontal shredding cylinder 2 for further shredding.

[0025] The core design of this equipment focuses on the cutting tools and scraper on the rotating shaft inside the horizontal shredder 2. Firstly, a horizontally positioned rotating rod 6 is located at the axis of the horizontal shredder 2. One end of the rotating rod 6 is connected to the inner wall of the horizontal shredder 2 via a sleeve connection, and the other end is connected to the drive shaft of the motor unit 5. The drive shaft of the motor unit 5 drives the rotating rod 6 to rotate axially, thereby causing the cutting tools and scraper on the pusher plate 7 to work inside the cylinder. The rotation of the rotating rod 6 causes the cutting tools to cut the dry metal sludge, while the scraper on the pusher plate 7 is responsible for pushing and cleaning the shredded material, ensuring the efficient execution of the shredding process.

[0026] In addition, a bearing 14 for mounting the rotating shaft is provided on the inner wall of the horizontal crushing cylinder 2. The function of the bearing 14 is to support and fix the rotating shaft 6, enabling it to rotate smoothly and steadily, reducing wear and friction, and ensuring that the rotating shaft 6 can maintain stable operation under high load. The design of the bearing 14 improves the service life and reliability of the equipment, and reduces vibration and noise caused by imbalance or friction of the rotating shaft 6.

[0027] The outer wall of the horizontal crushing drum 2 is provided with a frame 15 for fixing the motor unit 5. The function of the frame 15 is to stably support the motor unit 5 and ensure accurate power transmission between the motor unit 5 and the rotating rod 6; the structure of the frame 15 can reduce the vibration between the motor unit 5 and the rotating rod 6, ensure the stability and low noise operation of the system, and at the same time make the installation and maintenance of the equipment more convenient.

[0028] The rotating shaft is mainly equipped with two sets of cutting blades and a set of push plates 7. Multiple main cutters 16 on each cutting blade set are arranged in a row along the X-axis of the rotating shaft and are equidistantly distributed on the axial section of the shaft, specifically arranged at thirds intervals along the axial direction. The rotation of the push plates 7 agitates the internal dry metal sludge, ensuring that the cutting blades are in full contact with the dry metal sludge to be shredded during each rotation, thus achieving optimal shredding results. Each cutting blade set consists of multiple main cutters 16 and secondary cutters 8. The main cutters 16 are responsible for coarse cutting, while the secondary cutters 8 are used for fine cutting and further crushing. By adjusting the cutting surface and cutting angle of the cutters, the shredding effect can be optimized, ensuring more efficient treatment of the dry metal sludge.

[0029] Meanwhile, a scraper 9 is provided at the end of the pusher plate 7 to contact the inner wall of the horizontal crushing cylinder 2. The purpose of adding the scraper 9 is to prevent fine dry sludge from adhering to the inner wall of the cavity during the crushing process inside the horizontal crushing cylinder 2. Therefore, the scraper 9 is used to scrape and clean the inside of the cylinder to reduce the adhesion to the inner wall of the cylinder.

[0030] Furthermore, since metal sludge may contain a certain amount of moisture, excessive moisture may affect the efficiency of the crushing process, preventing the dry metal sludge from being effectively cut and crushed. Therefore, a heating system is installed in the equipment to evaporate the moisture in the sludge, ensuring that the sludge entering the crushing drum is processed at a suitable humidity level, thereby improving the crushing effect. Specifically, an assembly layer 10 is provided on the other end wall of the horizontal crushing drum 2 opposite to the motor unit 5. An electric heating tube 11 is installed inside the assembly layer 10, and the inner wall of the horizontal crushing drum 2 near the electric heating tube 11 is made of thermally conductive aluminum or copper. Heating is achieved by controlling the electric heating tube 11 through an external controller, with heat transferred to the interior through the thermally conductive material of the inner wall of the horizontal crushing drum 2. Additionally, a temperature controller can be added to monitor the internal temperature of the horizontal crushing drum 2. The evaporated gas can exit from the feed hopper 3 and the discharge hopper 4.

[0031] Furthermore, an anti-sticking material 12 is coated on the inner wall of the horizontal crushing cylinder 2, as well as on the push plate 7, the cutter assembly, and the rotating rod 6. The anti-sticking material 12 is made of polytetrafluoroethylene or a ceramic coating. The coating of the anti-sticking material 12 is mainly to solve the problem of uneven crushing or low crushing efficiency caused by adhesion or material retention.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A novel crushing device for pretreatment of dry metal sludge, comprising a frame (1), on which a horizontal crushing cylinder (2) is assembled, the upper end of the horizontal crushing cylinder (2) is provided with a feed hopper (3), and the lower end of the horizontal crushing cylinder (2) is provided with a discharge hopper (4), characterized in that: A motor unit (5) is provided on the outer side of the horizontal crushing cylinder (2). The drive shaft of the motor unit (5) extends through the horizontal crushing cylinder (2) to the inside. A horizontally placed rotating rod (6) is provided at the axis of the horizontal crushing cylinder (2). One end of the rotating rod (6) is connected to the inner wall of the horizontal crushing cylinder (2) by a sleeve. One end of the rotating rod (6) is connected to the drive shaft of the motor unit (5). The drive shaft of the motor unit (5) drives the rotating rod (6) to rotate axially. Among them, the surface of the rotating rod (6) includes a push plate (7) and a cutting blade assembly. The cutting blade assembly includes multiple main cutting blades (16) arranged in an array, and multiple secondary cutting blades (8) are arranged in an array on the main cutting blades (16). Meanwhile, the end of the push plate (7) is provided with a scraper (9) that contacts the inner wall of the horizontal crushing cylinder (2).

2. The novel shredding device for pretreatment of dry metal sludge according to claim 1, characterized in that: Multiple main cutters (16) are arranged in a row along the X-axis direction of the rotation axis.

3. The novel shredding device for pretreatment of dry metal sludge according to claim 1, characterized in that: The cutter group is divided into two groups, and the pusher plate (7) is one group and is plate-shaped. The two groups of cutters and the pusher plate (7) are equidistantly distributed on the axial section of the rotating shaft.

4. The novel shredding device for pretreatment of dry metal sludge according to claim 1, characterized in that: An assembly layer (10) is provided on the other end wall of the horizontal shredder (2) relative to the motor unit (5). An electric heating tube (11) is provided in the assembly layer (10). The inner wall of the horizontal shredder (2) near the electric heating tube (11) is made of thermally conductive aluminum or copper.

5. The novel shredding device for pretreatment of dry metal sludge according to claim 1, characterized in that: The inner wall of the horizontal crushing cylinder (2), as well as the push plate (7), the cutter assembly, and the rotating rod (6), are all coated with an anti-adhesion material (12). The anti-adhesion material (12) is made of polytetrafluoroethylene or ceramic coating.

6. The novel shredding device for pretreatment of dry metal sludge according to claim 1, characterized in that: The horizontal crushing cylinder (2) has a screen that communicates with the outside at the lower surface, and a collection bucket (13) with an open top is provided at the lower end of the horizontal crushing cylinder (2).

7. The novel shredding device for pretreatment of dry metal sludge according to claim 1, characterized in that: The horizontal crushing cylinder (2) is also provided with a bearing (14) for mounting the rotating shaft rod on the inner wall, and a frame (15) for fixing the motor unit (5) is provided on the outer wall of the horizontal crushing cylinder (2).

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