Industrial solid waste dehydration device

Abstract

The utility model relates to an industrial solid waste dewatering device, which comprises an annular screen mesh, a scraping end nested in the screen mesh, an annular anti-abrasion groove and a casing, the scraping end is fixedly connected with a rotating shaft, the screen mesh is arranged above the annular anti-abrasion groove and is adjacent to the annular anti-abrasion groove, a notch of the annular anti-abrasion groove faces the rotating shaft, and the casing is fixedly connected with the rotating shaft. The diameter of the lower edge of the screen is matched with the inner diameter of the upper edge of the annular anti-abrasion groove, the annular anti-abrasion groove is fixed to the machine shell, and the rotating shaft is connected with a driving mechanism. The waste material screening device has the advantages that moisture and fine materials in waste materials can be screened and separated, and abrasion of equipment caused by coarse materials can be greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of dewatering equipment, and in particular to an industrial solid waste dewatering device. Background Technology

[0002] In the process of waste sorting, to separate metal scrap from the garbage, the garbage is often first soaked in water. The different buoyancy of substances with different densities separates the garbage into layers. Floating materials such as plastics and cotton are removed, while the sand, gravel, and metal scrap at the bottom are dehydrated before further separation and recycling. Since most dehydration devices utilize centrifugal dehydration, the centrifugal force not only throws out the water but also forces solid materials from the waste onto the inner walls of the screens and containers, causing severe wear and tear on equipment components. This necessitates frequent shutdowns for component replacement, significantly increasing equipment maintenance costs and disrupting the normal dehydration process. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide an industrial solid waste dewatering device that can not only separate moisture and fine materials from waste materials but also significantly reduce wear and tear on the equipment caused by coarse materials.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An industrial solid waste dewatering device includes an annular screen, a scraper end nested within the screen, an annular anti-wear groove, and a housing. The scraper end is fixedly connected to a rotating shaft. The screen is positioned above and adjacent to the annular anti-wear groove, with the groove opening facing the rotating shaft. The lower edge diameter of the screen matches the upper edge inner diameter of the annular anti-wear groove. The annular anti-wear groove is fixed to the housing. The rotating shaft is connected to a drive mechanism.

[0006] More preferably, the outer diameter of the annular anti-wear groove is smaller than the inner diameter of the housing.

[0007] More preferably, the lower edge of the screen is fixedly connected to a differential connector, and the differential connector is also sleeved on the outer circumferential surface of the rotating shaft. The drive mechanism drives the rotating shaft and the differential connector to rotate at different speeds.

[0008] More preferably, the differential connection includes an outer ring, a plurality of connecting rods, an inner ring, and a sleeve. The lower edge of the screen is fixedly connected to the outer ring. The outer ring and the inner ring are connected by connecting rods, and the plurality of connecting rods are spaced apart. The sleeve is fixed below the inner ring. The rotating shaft passes through the sleeve. The upper end of the rotating shaft is fixed to the scraper end. The lower end of the rotating shaft is connected to the drive mechanism. The lower end of the sleeve is connected to the drive mechanism.

[0009] More preferably, the drive mechanism includes a drive shaft, a second drive gear and a first drive gear mounted and fixed on the drive shaft from top to bottom, a first differential gear mounted and fixed on the rotating shaft, and a second differential gear mounted and fixed on the differential connector; the first differential gear meshes with the first drive gear, and the second differential gear meshes with the second drive gear; the drive shaft is connected to the motor via a belt.

[0010] More preferably, the housing is provided with a mounting base inside, the mounting base is fixedly connected to the inner wall of the housing, and the drive mechanism, the rotating shaft and the sleeve of the differential connecting component are all mounted on the mounting base.

[0011] More preferably, a water receiving groove is provided between the outer peripheral wall of the annular anti-wear groove and the inner wall of the housing, and the housing is provided with a plurality of water outlet holes, which are connected to the water receiving groove.

[0012] More preferably, the upper part of the housing is provided with a cover, the top of the cover is provided with a feed inlet, the feed inlet is coaxially arranged with the scraper end; the bottom of the housing is provided with a discharge outlet.

[0013] More preferably, the screen is a frustum-shaped screen with openings at the top and bottom, and the shape of the scraper end matches the screen.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model relates to an industrial solid waste dewatering device, which can separate water and fine materials to obtain dewatered coarse material containing metal waste. At the same time, by setting an annular anti-wear groove on the machine casing, and the annular anti-wear groove is set close to the lower part of the scraper end or the lower part of the screen, the coarse material with greater centrifugal force is thrown into the anti-wear groove. The anti-wear groove can collect coarse material to form a sand and gravel layer, so that the coarse material thrown into the anti-wear groove later only impacts the sand and gravel layer in the anti-wear groove. The "sand hitting sand" protects the machine casing from wear by the coarse material.

[0016] 2. This utility model relates to an industrial solid waste dewatering device, which uses a drive mechanism to make the scraper end and the screen rotate at different speeds, effectively preventing screen hole clogging and screen wear. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded view of the present invention;

[0019] Figure 3 This is a cross-sectional view of the present invention;

[0020] Figure 4This is a schematic diagram of the differential connection component of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Screen; 2. Scraper end; 3. Annular anti-wear groove; 4. Machine housing; 41. Water outlet; 42. Water receiving trough; 43. Discharge port; 5. Rotating shaft; 6. Differential connecting piece; 61. Outer ring; 62. Connecting rod; 63. Inner ring; 64. Sleeve; 7. Drive mechanism; 71. Drive shaft; 72. Second drive gear; 73. First drive gear; 74. First differential gear; 75. Second differential gear; 8. Motor; 9. Mounting base; 10. Housing cover; 101. Feed inlet. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0024] See Figure 1An industrial solid waste dewatering device includes an annular screen 1, a scraper end 2 nested within the screen 1, an annular anti-wear groove 3, and a housing 4. Exemplarily, the screen 1 is a frustoconical screen with openings at both ends, and the shape of the scraper end 2 matches that of the screen 1. The scraper end 2 is fixedly connected to a rotating shaft 5. The screen 1 is positioned above and adjacent to the annular anti-wear groove 3, and the lower edge diameter of the screen 1 matches the upper edge inner diameter of the annular anti-wear groove 3. The opening of the annular anti-wear groove 3 faces the rotating shaft 5, and the annular anti-wear groove 3 is fixed to the inner wall of the housing 4. The rotating shaft 5 is connected to a drive mechanism 7. Waste material requiring dewatering is poured into screen 1 through the upper opening. The scraper end 2 in screen 1 rotates rapidly under the action of the drive mechanism 7. Simultaneously, the scraper end 2 drives the waste material to rotate rapidly. Under centrifugal force, the waste material is thrown towards screen 1. Moisture and fine particles, such as fine sand and small stones, in the waste material are thrown out through the screen holes of screen 1, completing the waste dewatering. At the same time, coarse materials such as metal scrap and large stones are thrown out through the lower opening of screen 1. At this point, most of the coarse material has just left the scraper end 2, and it still possesses significant centrifugal force. Therefore, the coarse material is quickly thrown out as soon as it leaves screen 1, and it is thrown onto the inner wall of the casing 4. In existing technology, the inner wall of the casing 4 near the bottom of screen 1 often suffers severe wear, and replacing the entire casing 4 is costly. In this invention, an annular anti-wear groove 3 is formed on the inner wall of the casing 4 below the screen 1. The height of the annular anti-wear groove 3 can be set and adjusted based on experience or the actual height of the wear layer on the casing 4. The function of the annular anti-wear groove 3 is to collect coarse materials such as sand and gravel thrown onto the inner wall of the casing 4. After the coarse materials thrown into the annular anti-wear groove 3 accumulate into a thin layer, they will not directly impact the casing 4 during the subsequent dewatering process. During the dewatering process, the annular anti-wear groove 3 continuously accumulates coarse materials, creating a sand-on-sand effect. The accumulation of sand and gravel in the annular anti-wear groove 3 forms an anti-wear layer, protecting the casing 4. This design makes full use of the internal space of the casing 4, has a simple and ingenious structure, eliminates wear on the casing 4, and reduces equipment maintenance costs.

[0025] Please see Figure 2 and Figure 3 Preferably, the outer diameter of the annular anti-wear groove 3 is smaller than the inner diameter of the housing 4. This can shield the housing 4 within a certain height below the annular anti-wear groove 3, further protecting the housing 4 located below the annular anti-wear groove 3. Since the centrifugal force of the coarse material thrown from the screen 1 gradually weakens during the fall of the coarse material, when the fall height of the coarse material exceeds the height of the annular anti-wear groove 3 and the height of the housing 4 that can be shielded by the annular anti-wear groove 3, the centrifugal force of the coarse material is no longer sufficient to cause the coarse material to impact the inner wall of the housing 4. Therefore, the design of the annular anti-wear groove 3 of this utility model can almost completely eliminate the wear on the inner wall of the housing 4, and the damage prevention effect is significant.

[0026] After solving the problem of wear on the inner wall of the casing 4, this utility model further improves the screen 1 by rotating the screen 1 coaxially at a speed lower than that of the scraper end 2. This not only prevents waste material from clogging the screen but also reduces wear on the screen 1. The specific implementation process is as follows:

[0027] The lower edge of the screen 1 is fixedly connected to a differential speed connector 6, which is also sleeved on the outer circumferential surface of the rotating shaft 5. The drive mechanism drives the rotating shaft 5 and the differential speed connector 6 to rotate at different speeds. Please refer to [link / reference]. Figure 4The differential connection 6 includes an outer ring 61, several connecting rods 62, an inner ring 63, and a sleeve 64. The lower edge of the screen 1 is fixedly connected to the outer ring 61. The outer ring 61 and the inner ring 63 are connected by connecting rods 62, and several connecting rods 62 are spaced apart. The sleeve 64 is fixed below the inner ring 63. The rotating shaft 5 passes through the sleeve 64. The upper end of the rotating shaft 5 is fixed to the scraper end 2. The lower end of the rotating shaft 5 is connected to the drive mechanism 7. The lower end of the sleeve 64 is connected to the drive mechanism 7. The drive mechanism 7 includes a drive shaft 71, a second drive gear 72 and a first drive gear 73 mounted and fixed on the drive shaft 71 from top to bottom, a first differential gear 74 mounted and fixed on the rotating shaft 5, and a second differential gear 75 mounted and fixed on the differential connector 6. The first differential gear 74 meshes with the first drive gear 73, and the second differential gear 75 meshes with the second drive gear 72. The drive shaft 71 is connected to the motor 8 via a belt. According to the basic principle of gear transmission, in a pair of meshing gears, the transmission ratio is equal to the ratio of the number of teeth of the driving gear to the number of teeth of the driven gear, i.e., i = Z1 / Z2, where i is the transmission ratio, Z1 is the number of teeth of the driving gear, and Z2 is the number of teeth of the driven gear. The transmission ratio reflects the relationship of angular velocity changes. The larger the transmission ratio, the smaller the angular velocity of the driven gear relative to the driving gear. Therefore, for two concentric driven differential gears 74 and 75, as long as their tooth counts are different, they will have different angular velocities under the same input speed of the drive shaft 71. This allows the screen 1 to rotate at a speed lower than that of the scraper end 2. The rotation of the screen 1 can cause the coarse material that impacts the screen 1 but fails to pass through the screen holes to rotate as well. Under the action of centrifugal force, the coarse material is removed from the screen 1, preventing it from clogging the screen holes. At the same time, the differential rotation of the scraper end 2 and the screen 1 creates relative friction between the coarse material attached to these two components. The coarse material is also removed from the components under the action of friction, playing a certain cleaning role and preventing the screen holes from clogging. When the coarse material is thrown onto the inner wall of screen 1 under the action of centrifugal force, the speed of the coarse material is reduced to the speed of screen 1, rather than dropping to 0, because screen 1 has a certain rotation speed. According to the law of conservation of energy, the greater the speed difference, the greater the force. Therefore, the rotating screen 1 can also reduce the speed difference when the coarse material is thrown onto screen 1, reduce the impact force on screen 1, and thus greatly reduce the wear of screen 1.

[0028] In this embodiment, a mounting base 9 is provided inside the housing 4, and the mounting base 9 is fixedly connected to the inner wall of the housing 4. The drive mechanism 7, the rotating shaft 5, and the sleeve 64 of the differential connector 6 are all mounted on the mounting base 9, and the positions of the drive mechanism 7, the rotating shaft 5, and the sleeve 64 of the differential connector 6 are fixed by the mounting base 9.

[0029] In this embodiment, the water and fine material spun out from the screen 1 are collected by a water receiving trough 42 and then discharged through a water outlet 41. Specifically, a water receiving trough 42 is provided between the outer peripheral wall of the annular anti-wear groove 3 and the inner wall of the housing 4. The housing 4 is provided with a plurality of water outlets 41, which are connected to the water receiving trough 42. A cover 10 is provided on the top of the housing 4, and a feed inlet 101 is provided on the top of the cover 10. The feed inlet 101 is coaxially arranged with the scraper end 2. The cover 10 can also collect water and fine material, allowing them to fall into the water receiving trough 42. A discharge outlet 43 is provided at the bottom of the housing 4, through which the coarse material containing metal waste that has been spun out is discharged.

[0030] The working principle of this device is as follows:

[0031] Step 1: Start the motor 8, and transmit the power output of the motor 8 to the drive shaft 71 through the belt. The drive shaft 71 drives the first drive gear 73 and the second drive gear 72 to rotate. The first differential gear 74 drives the rotating shaft 5 to rotate. The second differential gear 75 drives the differential connecting piece 6 to rotate. The scraper end 2 and the screen 1 rotate at different speeds, and the speed of the scraper end 2 is greater than the speed of the screen 1.

[0032] Step 2: Pour the waste material that needs to be dehydrated into the screen 1 through the feed port 101, so that the waste material will rotate under the rotating thrust of the scraper end 2. Under the action of centrifugal force, the waste material is thrown towards the wall of the screen 1. The water and fine material in the waste material can be thrown out through the screen holes, while the coarse material in the waste material gradually falls down.

[0033] Step 3: When the coarse material is just thrown off the screen 1, the centrifugal force is relatively large, and it moves towards the inner wall of the casing 4. A portion of the coarse material impacts the annular anti-wear groove 3, and its direction of movement is as follows... Figure 3 Arrow A indicates that, protected by the sand and gravel layer within the annular anti-wear groove 3, coarse material collides with and falls after impacting the sand and gravel layer. The remaining sand and gravel that does not impact the annular anti-wear groove 3 moves in the following direction: Figure 3 As indicated by arrow B, the angle between the direction of motion and the horizontal direction is relatively large when it is thrown out (i.e., the angle between it and the axis is smaller). Therefore, as the centrifugal force gradually disappears during the downward movement, the coarse material is unlikely to impact the inner wall of the casing 4, thus eliminating the problem of inner wall wear caused by friction between the coarse material and the casing 4.

[0034] Step 4: The water and fine material thrown out from the screen 1 are thrown onto the inner wall of the shell cover 10 and slide down into the water receiving tank 42 under their own gravity. They are then discharged through the water outlet 41, while the coarse material containing metal is discharged from the discharge port of the screen 1.

[0035] This utility model discloses an industrial solid waste dewatering device. By incorporating an annular anti-wear groove on the machine casing, positioned immediately below the scraper end or the screen, coarse materials with high centrifugal force are thrown into the anti-wear groove. The groove accumulates the coarse material, forming a sand and gravel layer. Subsequent coarse material thrown into the groove only impacts this layer, effectively protecting the machine casing from wear by the coarse material. Furthermore, this utility model utilizes scraper ends and screens with varying rotational speeds to prevent screen clogging and wear.

[0036] The above description is only a specific embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An industrial solid waste dewatering device, characterized in that: The device includes an annular screen, a scraper end nested within the screen, an annular anti-wear groove, and a housing. The scraper end is fixedly connected to a rotating shaft. The screen is positioned above and adjacent to the annular anti-wear groove, with the groove opening facing the rotating shaft. The lower edge diameter of the screen matches the upper edge inner diameter of the annular anti-wear groove. The annular anti-wear groove is fixed to the housing. The rotating shaft is connected to a drive mechanism.

2. The industrial solid waste dewatering device according to claim 1, characterized in that: The outer diameter of the annular anti-wear groove is smaller than the inner diameter of the housing.

3. The industrial solid waste dewatering device according to claim 1, characterized in that: The lower edge of the screen is fixedly connected to a differential connector, and the differential connector is also sleeved on the outer circumferential surface of the rotating shaft. The drive mechanism drives the rotating shaft and the differential connector to rotate at different speeds.

4. The industrial solid waste dewatering device according to claim 3, characterized in that: The differential coupling includes an outer ring, several connecting rods, an inner ring, and a sleeve. The lower edge of the screen is fixedly connected to the outer ring. The outer ring and the inner ring are connected by connecting rods, and the several connecting rods are spaced apart. The sleeve is fixed below the inner ring. The rotating shaft passes through the sleeve. The upper end of the rotating shaft is fixed to the scraper end. The lower end of the rotating shaft is connected to the drive mechanism. The lower end of the sleeve is connected to the drive mechanism.

5. An industrial solid waste dewatering device according to claim 3 or 4, characterized in that: The drive mechanism includes a drive shaft, a second drive gear and a first drive gear mounted and fixed on the drive shaft from top to bottom, a first differential gear mounted and fixed on the rotating shaft, and a second differential gear mounted and fixed on the differential connector; the first differential gear meshes with the first drive gear, and the second differential gear meshes with the second drive gear. The drive shaft is connected to the motor via a belt.

6. The industrial solid waste dewatering device according to claim 4, characterized in that: The housing is equipped with a mounting base, which is fixedly connected to the inner wall of the housing. The drive mechanism, the rotating shaft, and the sleeve of the differential connection are all mounted on the mounting base.

7. An industrial solid waste dewatering device according to claim 3, characterized in that: A water receiving groove is provided between the outer peripheral wall of the annular anti-wear groove and the inner wall of the housing. The housing is provided with several water outlet holes, which are connected to the water receiving groove.

8. An industrial solid waste dewatering device according to claim 3, characterized in that: The machine housing is provided with a cover on top, and the top of the cover is provided with a feed inlet, which is coaxially arranged with the scraper end; the bottom of the machine housing is provided with a discharge outlet.

9. An industrial solid waste dewatering device according to claim 1, characterized in that: The screen is a frustum-shaped screen with openings at the top and bottom, and the shape of the scraper end matches the screen.

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