Differential screening device for construction waste

Abstract

The invention relates to a construction waste differential screening device which comprises a supporting seat, a screening device and a driving device. The outer screen is rotationally arranged on the supporting base through a rotating assembly and is in transmission connection with the first motor. The supporting frames are arranged at two ends of the supporting seat; the rotating shaft is arranged in the outer screen, the axis of the rotating shaft is collinear with the axis of the outer screen, the two ends of the rotating shaft are rotationally connected with the corresponding supporting frames, and the high end of the inclined rotating shaft is connected with a second motor. The inner screen is arranged in the outer screen, the axis of the inner screen is parallel to the axis of the outer screen, the inner screen is connected with the rotating shaft through an elastic floating assembly, and the inner screen and the rotating shaft are eccentrically arranged. In the process of rotating the inner screen and the outer screen, the rotating speed of the outer screen is smaller than that of the inner screen, and differential speed is formed between the outer screen and the inner screen. Although the surface area of the inner screen is small and the number of the screen holes is small, the screening efficiency of the inner screen is improved by increasing the rotating speed of the inner screen.

Description

Technical Field

[0001] The invention relates to a screening device, in particular to a differential screening device for construction waste. Background Art

[0002] The screening device is used to screen and classify construction waste according to its particle size. Construction waste of different particle sizes are used to make building aggregates or permeable bricks and other materials.

[0003] In the screening process of conventional construction waste, the speed of the inner screen is consistent with that of the outer screen, and the diameter of the inner screen holes is larger than that of the outer screen holes. In this way, construction waste with particles larger than the inner screen holes, construction waste with particles smaller than the outer screen holes, and construction waste with particles smaller than the inner screen holes and larger than the outer screen holes can be classified for subsequent processing;

[0004] The traditional screening device has an inner screen and an outer screen that rotate synchronously. However, since the surface area of ​​the inner screen is smaller than that of the outer screen, and the number of holes in the outer screen is greater than that of the inner screen, the screening efficiency of the inner screen is lower than that of the outer screen at the same angular velocity.

[0005] In summary, how to improve the screening efficiency of internal screening has become an urgent problem that researchers in this field need to solve. Summary of the invention

[0006] The technical problem to be solved by the present invention is: how to improve the screening efficiency of the inner screen;

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] The present invention is a differential screening device for construction waste, comprising: a support seat, which is tilted and arranged on the workbench; an outer screen, which is rotatably arranged on the support seat through a rotating assembly, and the outer screen is connected to a first motor in transmission; a support frame, which is arranged at both ends of the support seat; a rotating shaft, which is arranged in the outer screen, and its axis is colinear with the axis of the outer screen, and its two ends are respectively connected to the corresponding support frame for rotation, and the end of the tilted rotating shaft located at a high position is connected to a second motor; an inner screen, which is arranged in the outer screen, and its axis is arranged parallel to the axis of the outer screen, and it is connected to the rotating shaft through an elastic floating assembly, and the inner screen is eccentrically arranged with the rotating shaft. Wherein, the diameter of the sieve holes on the peripheral wall of the inner sieve is larger than the diameter of the sieve holes on the peripheral wall of the outer sieve, and the rotation speed of the outer sieve is smaller than the rotation speed of the inner sieve;

[0009] In this scheme, the support seat is installed on the workbench at an angle, and the outer screen is arranged on the support seat through a rotating assembly, so that the outer screen is arranged at an angle; both ends of the rotating shaft are arranged on the support seat through a supporting frame, and the rotating shaft is also arranged at an angle, and the axis of the rotating shaft is colinear with the axis of the outer screen, and the rotating shaft is connected to the inner screen through an elastic floating assembly, and the inner screen is eccentrically arranged with the rotating shaft, and one end of the rotating shaft is connected to the second motor, and the outer screen is driven by the first motor;

[0010] When the construction waste needs to be screened, the construction waste is fed between the rotating shaft and the inner screen. Since the inner screen and the outer screen are inclined, the construction waste moves along the inner wall of the inner screen and the outer screen under the action of gravity. The first motor controls the outer screen to rotate, and the second motor controls the rotating shaft to rotate, thereby controlling the inner screen to rotate. In the process of rotating the inner screen and the outer screen, the rotation speed of the outer screen is less than the rotation speed of the inner screen, and a differential speed is formed between the outer screen and the inner screen.

[0011] Construction waste with larger particles is discharged from the inner screen, construction waste with medium particles is discharged from the ends of the inner and outer screens, and construction waste with smaller particles is discharged from the outer screen. Although the surface area of ​​the inner screen is smaller and the number of screen holes is smaller, the screening efficiency of the inner screen is improved by increasing the rotation speed of the inner screen.

[0012] In order to collect the construction waste after screening, the present invention adopts a first discharge tray disposed outside the lower end of the inclined inner screen; a second discharge tray disposed outside the lower end of the inclined outer screen; and a third discharge tray disposed below the outer screen;

[0013] The first discharging tray is used to collect construction waste with larger particles, the second collecting tray is used to collect construction waste with medium particles, and the third discharging tray is used to collect construction waste with smaller particles.

[0014] In order to illustrate the specific structure of the rotating assembly, the rotating assembly adopted by the present invention includes: a plurality of driven wheels are arranged on one side of the support seat along the length direction of the support seat and are arranged at equal intervals; a plurality of driving wheels are arranged on the other side of the support seat along the length direction of the support seat and are arranged at equal intervals; the outer screen is in contact with the driven wheel and the driving wheel; a series shaft connected to the first motor at one end, which connects the plurality of driving wheels;

[0015] In this solution, multiple driven wheels and driving wheels are respectively arranged on both sides of the length direction of the support seat, and the outer screen is placed on the multiple driven wheels and driving wheels, wherein the multiple driving wheels are connected to the series shaft, and the second motor and the series shaft are transmitted to realize the synchronous rotation of the multiple driving wheels, and the self-rotation of the outer screen is realized by the friction between the outer screen and the driven wheel and the driving wheel.

[0016] In order to further increase the screening efficiency of the outer screen, the present invention adopts a stirring angle steel, which is arranged on the outer peripheral wall of the inner screen along the axial direction of the inner screen, and the connection between the stirring angle steel and the inner screen is located at the extreme position of the inner screen away from the center of the rotating shaft;

[0017] In this solution, since the inner screen and the rotating shaft are eccentrically set, and the rotating shaft and the outer screen are concentrically set, the distance between the inner screen and the outer screen is the smallest, and the distance to the rotating shaft is the largest. The stirring angle steel rotates with the inner screen, and is used to periodically push the construction waste placed on the outer screen, thereby improving the screening efficiency of the outer screen.

[0018] To illustrate the specific structure of the elastic floating assembly, the elastic floating assembly adopted by the present invention includes: a first connecting rod, one end of which is connected to the rotating shaft; a first guide sleeve, which is connected to the inner wall of the inner screen, the other end of the first connecting rod is inserted into the first guide sleeve, and the connection between the first guide sleeve and the inner screen is located at the extreme position of the inner screen close to the center of the rotating shaft; a first elastic member, which is arranged in the first guide sleeve, and its end is against the end of the first connecting rod; a second connecting rod, one end of which is connected to the rotating shaft; a second guide sleeve, which is connected to the inner wall of the inner screen, the other end of the second connecting rod is inserted into the second guide sleeve, and the connection between the second guide sleeve and the inner screen is located at the extreme position of the inner screen away from the center of the rotating shaft; a second elastic member, which is arranged in the second guide sleeve, and its end is against the end of the second connecting rod; wherein the elastic force of the second elastic member is greater than the elastic force of the first elastic member, and the length of the second connecting rod is greater than the length of the first connecting rod;

[0019] In this solution, the eccentric setting of the rotating shaft and the inner screen is realized by the elastic floating assembly, one end of the first guide sleeve is connected to the inner screen, one end of the first connecting rod is connected to the rotating shaft, the other end is inserted into the first guide sleeve, and is connected to the first elastic member, similarly, one end of the second guide sleeve is connected to the inner screen, one end of the second connecting rod is connected to the rotating shaft, the other end is inserted into the second guide sleeve, and is connected to the second elastic member, the first connecting rod and the second connecting rod are symmetrically arranged, the elastic force of the second elastic member is greater than the elastic force of the first elastic member, and the length of the second connecting rod is greater than the length of the first connecting rod;

[0020] The rotating shaft and the inner screen are arranged in a floating manner rather than a rigid manner. When there is a lot of construction waste between the inner screen and the outer screen, the eccentric rotation of the inner screen is interfered with, and the second elastic member contracts, and the first elastic member stretches, so that the center of the inner screen is closer to the center of the rotating shaft, so that the inner screen can pass smoothly, and the inner screen can be prevented from stopping rotating, thereby preventing the second motor from burning out.

[0021] In addition, construction waste is placed on the inner screen. If the construction waste is too heavy, the center of the inner screen will be far away from the center of the rotating shaft, resulting in rigid contact between the inner screen and the outer screen.

[0022] In the present solution, when the construction waste is placed on the inner screen, the second elastic member is stretched. Since the elastic force of the second elastic member is greater than that of the first elastic member, the stretched length of the second elastic member is smaller than that of the first elastic member under the same weight, thereby preventing rigid contact between the inner screen and the outer screen. That is, the floating space of the center of the inner screen can be controlled by the cooperation of the first elastic member and the second elastic member.

[0023] In order to prevent the accumulation of construction waste on the first guide sleeve and the second guide sleeve, the second guide sleeve and the first guide sleeve are provided with an arc structure at the end surface edge close to the rotating shaft in the present invention;

[0024] By providing the arc structure, when garbage falls onto the first guide sleeve and the second guide sleeve, the arc structure can prevent the construction garbage from accumulating on the first guide sleeve and the second guide sleeve.

[0025] The beneficial effects of the present invention are as follows: the present invention is a differential screening device for construction waste. When construction waste needs to be screened, the construction waste is fed in from between the rotating shaft and the inner screen. Since the inner screen and the outer screen are inclined, the construction waste moves along the inner walls of the inner screen and the outer screen under the action of gravity. The first motor controls the rotation of the outer screen, and the second motor controls the rotation of the rotating shaft, thereby controlling the rotation of the inner screen. In the process of rotating the inner screen and the outer screen, the rotation speed of the outer screen is lower than the rotation speed of the inner screen, and a differential speed is formed between the outer screen and the inner screen. Construction waste with larger particles is discharged from the inner screen, construction waste with medium particles is discharged from the ends of the inner screen and the outer screen, and construction waste with smaller particles is discharged from the outer screen. Although the surface area of ​​the inner screen is smaller and the number of sieve holes is smaller, the screening efficiency of the inner screen is improved by increasing the rotation speed of the inner screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 is a side view of the present invention;

[0029] Figure 3 It is the coordination diagram of the rotating shaft, inner screen and outer screen in state one;

[0030] Figure 4 This is the coordination diagram of the rotating shaft, inner screen and outer screen in state 2;

[0031] Figure 5 It is the coordination diagram of the three states of the rotating shaft, the inner screen and the outer screen;

[0032] Figure 6 It is the coordination diagram of the rotating shaft, inner screen and outer screen in the fourth state;

[0033] Figure 7 It is a schematic diagram of the coordination of the rotating shaft and the inner screen;

[0034] In the figure: 1-support seat, 2-workbench, 3-external screen, 4-rotating assembly, 41-driven wheel, 42-driving wheel, 43-tandem shaft, 5-first motor, 6-support frame, 7-rotating shaft, 8-inner screen, 81-first discharge tray, 82-second discharge tray, 83-third discharge tray, 84-angle steel, 9-elastic floating assembly, 91-first connecting rod, 92-first guide sleeve, 93-first elastic member, 94-second connecting rod, 95-second guide sleeve, 96-second elastic member, 97-arc structure. DETAILED DESCRIPTION

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0036] like Figure 1-7 As shown, the present invention is a differential screening device for construction waste, comprising: a support seat 1, which is tilted and arranged on the workbench 2; an outer screen 3, which is rotatably arranged on the support seat 1 through a rotating component 4, and the outer screen is connected to a first motor 5 in a transmission manner; a support frame 6, which is arranged at both ends of the support seat 1; a rotating shaft 7, which is arranged in the outer screen 3, whose axis is colinear with the axis of the outer screen 3, and whose two ends are respectively connected to the corresponding support frames 6 for rotation, and a second motor (not shown in the figure) is connected to one end of the tilted rotating shaft 7 located at a high position; an inner screen 8, which is arranged in the outer screen 3, whose axis is arranged parallel to the axis of the outer screen 3, and which is connected to the rotating shaft 7 through an elastic floating component 9, and the inner screen 8 is eccentrically arranged with the rotating shaft 7; wherein the diameter of the sieve holes on the peripheral wall of the inner screen 8 is larger than the diameter of the sieve holes on the peripheral wall of the outer screen 3, and the rotation speed of the outer screen 3 is smaller than the rotation speed of the inner screen 8;

[0037] In this scheme, the support seat 1 is installed on the workbench 2 at an angle, and the outer screen 3 is arranged on the support seat 1 through the rotating component 4, so that the outer screen 3 is arranged at an angle; both ends of the rotating shaft 7 are arranged on the support seat 1 through the supporting frame 6, and the rotating shaft 7 is also arranged at an angle, and the axis of the rotating shaft 7 is colinear with the axis of the outer screen 3, and the rotating shaft 7 is connected to the inner screen 8 through the elastic floating component 9, and the inner screen 8 is eccentrically arranged with the rotating shaft 7, and one end of the rotating shaft 7 is connected to the second motor, and the outer screen 3 is driven by the first motor 5;

[0038] like Figure 3As shown, when the construction waste needs to be screened, the construction waste is fed between the rotating shaft 7 and the inner screen 8. Since the inner screen 8 and the outer screen 3 are inclined, the construction waste moves along the inner wall of the inner screen 8 and the outer screen 3 under the action of gravity. The first motor 5 controls the outer screen 3 to rotate, and the second motor controls the rotating shaft 7 to rotate, thereby controlling the inner screen 8 to rotate. In the process of rotating the inner screen 8 and the outer screen 3, the rotation speed of the outer screen 3 is less than the rotation speed of the inner screen 8, and a differential speed is formed between the outer screen 3 and the inner screen 8.

[0039] Construction waste with larger particles is discharged from the inner screen 8, construction waste with medium particles is discharged from the inner screen 8 and the ends of the outer screen 3, and construction waste with smaller particles is discharged from the outer screen 3; although the surface area of ​​the inner screen 8 is small and the number of screen holes is small, the screening efficiency of the inner screen 8 is improved by increasing the rotation speed of the inner screen.

[0040] like Figure 1 As shown, in order to collect the construction waste after screening, the present invention adopts a first discharge tray 81 disposed outside the lower end of the inclined inner screen 8; a second discharge tray 82 is disposed outside the lower end of the inclined outer screen 3; and a third discharge tray 83 is disposed below the outer screen 3;

[0041] The first discharging tray is used to collect construction waste with larger particles, the second collecting tray is used to collect construction waste with medium particles, and the third discharging tray is used to collect construction waste with smaller particles.

[0042] like Figure 1-6 As shown, in order to illustrate the specific structure of the rotating assembly, the present invention adopts a rotating assembly 4 including: a plurality of driven wheels 41 are arranged on one side of the supporting seat 1 along the length direction of the supporting seat 1 and are arranged at equal intervals; a plurality of driving wheels 42 are arranged on the other side of the supporting seat 1 along the length direction of the supporting seat 1 and are arranged at equal intervals; the outer screen 3 is in contact with the driven wheel 41 and the driving wheel 42; a series shaft 43 connected to the first motor 5 at one end, which is connected to the plurality of driving wheels 42;

[0043] In this solution, multiple driven wheels 41 and driving wheels 42 are respectively arranged on both sides of the length direction of the support seat 1, and the outer screen 3 is placed on the multiple driven wheels 41 and driving wheels 42, wherein the multiple driving wheels 42 are connected to the series shaft 43, and the second motor 5 and the series shaft 43 are transmitted to realize the synchronous rotation of the multiple driving wheels 42, and the self-rotation of the outer screen 3 is realized by the friction between the outer screen 3 and the driven wheel 41 and the driving wheel 42.

[0044] like Figure 3-7As shown, in order to further increase the screening efficiency of the outer screen, the present invention adopts a stirring angle steel 84, which is arranged along the axial direction of the inner screen 8 and on the outer peripheral wall of the inner screen 8, and the connection between the stirring angle steel 84 and the inner screen 8 is located at the extreme position of the inner screen 8 away from the center of the rotating shaft 7;

[0045] like Figure 3 , 4 As shown, in the present scheme, since the inner screen 8 and the rotating shaft 7 are eccentrically arranged, and the rotating shaft 7 and the outer screen 3 are concentrically arranged, the distance between the inner screen 8 and the outer screen 3 is the smallest, and the distance between the inner screen 8 and the rotating shaft 7 is the largest. The stirring angle steel 84 rotates with the inner screen 8, and is used to periodically push the construction waste placed on the outer screen 3, thereby improving the screening efficiency of the outer screen 3.

[0046] like Figure 3-7 As shown, in order to illustrate the specific structure of the elastic floating assembly, the elastic floating assembly 9 adopted in the present invention includes: a first connecting rod 91, one end of which is connected to the rotating shaft 7; a first guide sleeve 92, which is connected to the inner wall of the inner screen 8, the other end of the first connecting rod 91 is inserted into the first guide sleeve 92, and the connection between the first guide sleeve 92 and the inner screen 8 is located at the extreme position of the inner screen 8 close to the center of the rotating shaft 7; a first elastic member 93, which is arranged in the first guide sleeve 92, and the end thereof is against the end of the first connecting rod 91; a second connecting rod 94, one end of which is connected to the rotating shaft 7; a second guide sleeve 95, which is connected to the inner wall of the inner screen 8, the other end of the second connecting rod 94 is inserted into the second guide sleeve 95, and the connection between the second guide sleeve 95 and the inner screen 8 is located at the extreme position of the inner screen 8 away from the center of the rotating shaft 7; a second elastic member 96, which is arranged in the second guide sleeve 95, and its end is against the end of the second connecting rod 94; wherein the elastic force of the second elastic member 96 is greater than the elastic force of the first elastic member 93, and the length of the second connecting rod 94 is greater than the length of the first connecting rod 91;

[0047] In this solution, the eccentric setting of the rotating shaft 7 and the inner screen 8 is realized by the elastic floating component 9, one end of the first guide sleeve 92 is connected to the inner screen 8, one end of the first connecting rod 91 is connected to the rotating shaft 7, the other end is inserted into the first guide sleeve 92, and is connected to the first elastic member 93, similarly, one end of the second guide sleeve 95 is connected to the inner screen 8, one end of the second connecting rod 94 is connected to the rotating shaft 7, the other end is inserted into the second guide sleeve 95, and is connected to the second elastic member 96, the first connecting rod 91 and the second connecting rod 94 are symmetrically arranged, the elastic force of the second elastic member 96 is greater than the elastic force of the first elastic member 93, and the length of the second connecting rod 94 is greater than the length of the first connecting rod 91;

[0048] like Figure 5As shown, the rotating shaft 7 and the inner screen 8 are arranged in a floating manner rather than a rigid manner. When there is a lot of construction waste between the inner screen 8 and the outer screen 3, the eccentric rotation of the inner screen 8 is interfered with, and the second elastic member 96 is contracted, and the first elastic member 93 is stretched, so that the center of the inner screen 8 is closer to the center of the rotating shaft 7, so that the inner screen 8 can pass smoothly, and the inner screen 8 can be prevented from stopping rotating, thereby preventing the second motor from burning out.

[0049] like Figure 6 As shown, in addition, construction waste is placed on the inner screen 8. If the construction waste is too heavy and placed on the inner screen 8, the center of the inner screen 8 will be far away from the center of the rotating shaft 7, resulting in rigid contact between the inner screen 8 and the outer screen 3;

[0050] In the present solution, when construction waste is placed on the inner screen 8, the second elastic member 96 is stretched. Since the elastic force of the second elastic member 96 is greater than that of the first elastic member 93, the stretched length of the second elastic member 96 is smaller than that of the first elastic member 93 when it bears a certain weight, thereby preventing rigid contact between the inner screen 8 and the outer screen 3. That is, the cooperation of the first elastic member 93 and the second elastic member 96 can control the floating space of the center of the inner screen 8.

[0051] like Figure 3-7 As shown, in order to prevent the accumulation of construction waste on the first guide sleeve and the second guide sleeve, the second guide sleeve 95 and the first guide sleeve 92 are provided with an arc structure 97 at the end edge close to the rotating shaft 7 in the present invention;

[0052] By providing the arc structure 97 , when garbage falls onto the first guide sleeve 92 and the second guide sleeve 95 , the arc structure 97 can prevent the construction garbage from accumulating on the first guide sleeve 92 and the second guide sleeve 95 .

[0053] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A construction waste differential screening device, characterized in that: include: A support seat, which is tilted and arranged on the workbench; An outer screen is rotatably arranged on the support seat through a rotating assembly, and the outer screen is drivingly connected to the first motor; A support frame, which is provided at both ends of the support seat; A rotating shaft, which is arranged in the outer screen, with its axis being colinear with the axis of the outer screen, and its two ends being rotatably connected to the corresponding support frame, and a second motor is connected to the end of the inclined rotating shaft located at a high position; An inner screen is arranged inside the outer screen, and its axis is arranged parallel to the axis of the outer screen. The inner screen is connected to the rotating shaft through an elastic floating component, and the inner screen is eccentrically arranged with respect to the rotating shaft. The diameter of the sieve holes on the inner sieve peripheral wall is larger than the diameter of the sieve holes on the outer sieve peripheral wall, and the rotation speed of the outer sieve is smaller than the rotation speed of the inner sieve.

2. A construction waste differential screening device according to claim 1, characterized in that: A first discharging tray is arranged outside the lower end of the inclined inner screen; A second discharge tray is arranged outside the lower end of the inclined outer screen; A third discharging tray is arranged below the outer sieve.

3. The differential screening device for construction waste according to claim 1, characterized in that: The rotating assembly comprises: A plurality of driven wheels are arranged on one side of the support base along the length direction of the support base and are arranged at equal intervals; A plurality of driving wheels are arranged at equal intervals on the other side of the support seat along the length direction of the support seat; the outer screen is in contact with the driven wheel and the driving wheel; A tandem shaft, one end of which is connected to the first motor, is connected to the plurality of driving wheels.

4. A construction waste differential screening device according to claim 1, characterized in that: Also includes: The stirring angle steel is arranged on the outer peripheral wall of the inner screen along the axial direction of the inner screen, and the connection between the stirring angle steel and the inner screen is located at the extreme position of the inner screen away from the center of the rotating shaft.

5. The differential screening device for construction waste according to claim 1, characterized in that: The elastic floating assembly comprises: A first connecting rod, one end of which is connected to the rotating shaft; A first guide sleeve connected to the inner wall of the inner screen, the other end of the first connecting rod is inserted into the first guide sleeve, and the connection between the first guide sleeve and the inner screen is located at the extreme position of the inner screen close to the center of the rotating shaft; a first elastic member, which is disposed in the first guide sleeve and has an end portion abutting against an end portion of the first connecting rod; A second connecting rod, one end of which is connected to the rotating shaft; A second guide sleeve, which is connected to the inner wall of the inner screen, the other end of the second connecting rod is inserted into the second guide sleeve, and the connection between the second guide sleeve and the inner screen is located at the extreme position of the inner screen away from the center of the rotating shaft; a second elastic member, which is disposed in the second guide sleeve and has an end portion abutting against an end portion of the second connecting rod; The elastic force of the second elastic member is greater than the elastic force of the first elastic member, and the length of the second connecting rod is greater than the length of the first connecting rod.

6. A construction waste differential screening device according to claim 5, characterized in that: The second guide sleeve and the first guide sleeve are arranged at their end surface edges close to the rotating shaft as arc-shaped structures.

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