Vibrating screen
By designing anti -blocking devices in the vibration screen, the driving mechanism drives the blocking parts with the screen to connect with the screen, which solves the problem of screening of the screen network and improves the screening efficiency.
Patent Information
- Application Number
- CN202420954020.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-06
AI Technical Summary
During the use of existing vibrating screens, the screen holes of the screen mesh are prone to clogging, resulting in reduced screening efficiency and even requiring shutdown and cleaning.
Designed a anti -blocking device, including the driver and the anti -blocking parts. The anti -blocking parts are located on the side of the sieve network near the vibration platform. It moves through the groove and is connected to the screen. Siege the net collision to clear the blockage.
Through the anti -blocking device's shooting action, the blockage of the screening network is effectively removed, the screening efficiency is improved, and the number of stop cleaning is reduced.
Smart Images
Figure CN222402185U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vibrating screen equipment, in particular to a vibrating screen. Background Art
[0002] Vibrating screens are mainly used to separate solid powders, solid particles and liquids, and can classify materials according to particle size. They achieve the material screening process through the horizontal, inclined and vertical three-dimensional movements generated by the vibration motor. During the use of existing vibrating screens, the mesh holes of the screen are prone to blockage. Once a large number of mesh holes are blocked, the screening efficiency will be reduced. In serious cases, it may even be necessary to stop the machine for cleaning, and then screen again after cleaning, which results in low screening efficiency and heavy workload. Utility Model Content
[0003] In order to solve the problem in the prior art that the mesh holes of the screen are easily clogged, the utility model provides a vibrating screen.
[0004] The technical solution adopted by the utility model is: a vibrating screen, including a vibrating platform, at least one screen frame is arranged on the vibrating platform, a screen is arranged in the screen frame, the screen has a plurality of screen holes, and is used to screen materials placed on the screen, the vibrating screen also includes an anti-blocking device, the anti-blocking device includes a driving mechanism and an anti-blocking member; the anti-blocking member is located on the side of the screen close to the vibrating platform; on the side wall of the screen frame, a through groove penetrating the side wall is provided for the movement of the anti-blocking member, and the length direction of the through groove is parallel to the normal direction of the plane of the screen; one end of the anti-blocking member extends from the through groove and is connected to the output end of the driving mechanism, and the driving mechanism drives the anti-blocking member to move toward the screen along the length direction of the through groove and abut against it.
[0005] Furthermore, the anti-blocking device also includes a fixed seat and a lifting assembly; wherein the driving mechanism, the lifting assembly and the anti-blocking piece are all arranged on the fixed seat, and the fixed seat is arranged on the outer wall of the screen frame where the through slot is opened; one end of the anti-blocking piece is connected to the lifting assembly, and the output end of the driving mechanism is connected to the lifting assembly, which is used to drive the lifting assembly to drive the anti-blocking piece to move toward the screen along the length direction of the through slot and abut against it.
[0006] Furthermore, the driving mechanism is a motor, and the lifting assembly includes a lifting screw and a screw sleeve. The output end of the driving mechanism is connected to the lifting screw, and the screw sleeve is sleeved outside the lifting screw. The screw sleeve is slidably connected to the fixed seat, and one end of the anti-blocking member is connected to the screw sleeve.
[0007] Furthermore, the anti-blocking member is a hollow ring, and the diameter d of the anti-blocking member is ≤ the diameter of the screen; the anti-blocking member is connected to the screw sleeve via a connecting rod.
[0008] Furthermore, the anti-blocking member is a disk with a plurality of hollow holes, and the aperture of the hollow holes is larger than the diameter of the sieve holes of the sieve that the anti-blocking member hits.
[0009] Furthermore, the plurality of hollow holes are distributed in a circular array with the center of the disk as the center, and the axes of the plurality of hollow holes are parallel to the axes of the sieve holes of the sieve.
[0010] Furthermore, the anti-blocking device also includes a blocking membrane, which is a component made of polyester or nylon material; the connecting rod passes through the blocking membrane, and the blocking membrane is arranged on the inner wall of the screen frame where the through groove is opened.
[0011] Furthermore, the anti-blocking member is provided with an infrared sensor for acquiring the thermal radiation signal of the material on the screen.
[0012] The beneficial effect of the utility model is that an anti-blocking piece is arranged on the side of the screen close to the vibration platform, and a driving device is used to drive the anti-blocking piece to approach the screen and abut against it. Since the screen is always in vibration, the anti-blocking piece and the screen are constantly colliding, so that the anti-blocking piece beats the screen, so that the material blocked in the sieve holes of the screen falls off the screen, unblocking the screen, thereby improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of a vibrating screen of the utility model;
[0014] Figure 2 for Figure 1 A magnified view of the middle A;
[0015] Figure 3 for Figure 1 A magnified view of the second perspective at center A;
[0016] Figure 4 This is a three-dimensional diagram of a vibrating screen of the utility model;
[0017] Figure 5 This is a schematic diagram of the structure of an anti-blocking member in one of the embodiments;
[0018] Figure 6 is a schematic structural diagram of an anti-blocking member in another embodiment;
[0019] Figure 7 The figure is the position relationship diagram of the screen and the anti-blocking parts;
[0020] Figure 8 This is a diagram of the position relationship between the screen and the anti-blocking piece after they are in contact.
[0021] Figure numerals: 1. vibration platform, 2. screen frame, 21. through groove, 3. screen, 31. screen hole, 4. driving mechanism, 5. anti-blocking part, 51. hollow hole, 6. fixing seat, 7. lifting screw, 8. screw sleeve, 9. connecting rod, 10. barrier membrane. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.
[0023] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other examples, in order to avoid obscuring the present invention, well-known structures, circuits, materials or methods are not specifically described.
[0024] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0025] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present invention.
[0026] The following is combined with Figure 1-8 The embodiments of the present utility model are described in detail.
[0027] Example 1
[0028] The utility model relates to a vibrating screen, comprising a vibrating platform 1, wherein at least one screen frame 2 is arranged on the vibrating platform 1, a screen 3 is arranged in the screen frame 2, the screen 3 has a plurality of screen holes 31, and is used to screen materials placed on the screen 3, and is characterized in that the vibrating screen also comprises an anti-blocking device, wherein the anti-blocking device comprises a driving mechanism 4 and an anti-blocking component 5; the anti-blocking component 5 is located on a side of the screen 3 close to the vibrating platform 1; a through slot 21 penetrating the side wall of the screen frame 2 is provided for the anti-blocking component 5 to move, and the length direction of the through slot 21 is parallel to the normal direction of the plane of the screen 3; one end of the anti-blocking component 5 extends out from the through slot 21 and is connected to the output end of the driving mechanism 4, and the driving mechanism 4 drives the anti-blocking component 5 to move toward the screen 3 along the length direction of the through slot 21 and abut against it.
[0029] Specifically, Figure 1 and 4 As shown, the vibrating screen is cylindrical, so it is also called a circular vibrating screen, including a vibrating platform 1 placed on the ground and a screen frame 2 located on the vibrating platform 1. There is at least one screen frame 2, usually two or more. Multiple screen frames 2 are installed and fixed in sequence along the vertical direction of the vibrating platform 1, and screens 3 with different apertures are installed as required. Two adjacent screen frames 2 can be installed and fixed by bolts, thereby realizing multi-stage screening of materials; and each screen frame 2 has an opening on one side for outputting the screened material through the opening.
[0030] Since the screen 3 is often blocked during use, once the screen 3 is blocked, the screening efficiency will be greatly affected. Therefore, in view of the blockage of the screen 3, an anti-blocking device is provided in the present application, including a driving mechanism 4 and an anti-blocking member 5. Since the material is input to the screen 3 from the material input port at the top of the vibrating screen, if Figure 7 and Figure 8 As shown, the anti-blocking member 5 is arranged on the side of the screen 3 close to the vibration platform 1, that is, on the side of the screen 3 away from the material input port. The anti-blocking member 5 can be several parallel straight rods or a hollow frame of a circle or other shape, and the output end of the driving mechanism 4 is connected to the anti-blocking member 5. In order to enable the anti-blocking member 5 to move up and down in the screen frame 2, a through slot 21 is opened on the side wall of the screen frame 2, so that one end of the anti-blocking member 5 can extend from the through slot 21 and be connected to the driving device.
[0031] It should be noted that the top and bottom ends of the through slot 21 are respectively the upper and lower sides of the screen frame 2, that is, the anti-blocking member 5 can move from the bottom of the screen frame 2 to the top of the screen 3, such as Figure 8 As shown, when it moves to contact with the screen 3, since the screen 3 is in continuous vibration, the anti-blocking member 5 continuously collides with the vibrating screen 3, and the screen 3 continuously hits the anti-blocking member 5, causing the material blocked in the screen hole 31 to fall out of the screen hole 31.
[0032] The driving mechanism 4 here can be a cylinder, a hydraulic cylinder or a motor, etc. For example, when it is a cylinder, the cylinder is located below the anti-blocking member 5, and the gas enters the cylinder cavity from the inflated air pipe joint, pushing the piston rod out of the cylinder body. The pushed-out piston rod pushes the anti-blocking member 5 to move toward the screen 3 and finally abuts against the screen 3. After beating the screen 3, the other air pipe joint of the cylinder is inflated to make the piston rod return to the cylinder body. Since there is no piston rod to push the anti-blocking member 5, the anti-blocking member 5 slowly returns to its initial position, that is, the initial position away from the screen 3. For another example, when it is a motor, such as Figure 2 and 3 As shown, a fixed seat 6 and a lifting assembly are also required, and the motor, the lifting assembly and the anti-blocking member 5 are all fixed on the fixed seat 6. The lifting assembly here can be a screw and a sleeve, that is, the output end of the motor is connected to the screw, and a sleeve is arranged outside the screw, and an internal thread matching the external thread of the screw is arranged inside the sleeve, and the sleeve is connected to the anti-blocking member 5. In order to move the anti-blocking member 5 in the through groove 21, the sleeve can slide on the fixed seat 6 through the slide rod arranged thereon and the slide groove matching the slide rod provided on the fixed seat 6, thereby driving the anti-blocking member 5 to move toward the screen 3. Since the screen is always vibrating, the anti-blocking member 5 abutting against the screen 3 continuously collides with the screen 3, and the screen 3 continuously hits the anti-blocking member 5, so that the material blocked in the screen hole 31 falls out of the screen hole 31.
[0033] Example 2
[0034] This embodiment is an improvement on the embodiment 1, and the difference is that the anti-blocking device also includes a fixed seat 6 and a lifting assembly; wherein the driving mechanism 4, the lifting assembly and the anti-blocking member 5 are all arranged on the fixed seat 6, and the fixed seat 6 is arranged on the outer wall of the screen frame 2 where the through slot 21 is opened; one end of the anti-blocking member 5 is connected to the lifting assembly, and the output end of the driving mechanism 4 is connected to the lifting assembly, which is used to drive the lifting assembly to drive the anti-blocking member 5 to move toward the screen 3 along the length direction of the through slot 21 and abut against it.
[0035] Specifically, in order to fix the anti-blocking device on the screen frame 2, as shown in FIG. Figure 3 As shown, the anti-blocking device also includes a fixed seat 6 and a lifting assembly, wherein the fixed seat 6 can be fixed on the screen frame 2 by bolts, and the driving mechanism 4 and the lifting assembly are both installed above the fixed seat 6.
[0036] When the driving mechanism 4 is a cylinder, the cylinder is arranged on the fixed seat 6, and the lifting assembly can be a lifting plate, which is slidably connected to the fixed seat 6, and one end of the lifting plate is connected to the anti-blocking member 5, so that the lifting of the lifting plate will drive the anti-blocking member 5 to rise and fall, and the cylinder is located below the lifting plate. When the cylinder is started, the piston rod in the cylinder extends from the cylinder and drives the lifting plate to rise, thereby driving the anti-blocking member 5 connected to the lifting plate to rise, and the anti-blocking member 5 rises to abut against the screen 3. Since the screen is always vibrating, the anti-blocking member 5 abutting against the screen 3 continuously collides with the screen 3, and the screen 3 continuously hits the anti-blocking member 5, so that the material blocked in the screen hole 31 falls out of the screen hole 31.
[0037] When the driving mechanism is a motor, Figure 3 As shown, the lifting assembly is a lifting screw 7 and a screw sleeve 8, the screw sleeve 8 is connected to the anti-blocking member 5, the screw sleeve 8 has an internal thread matching the external thread of the lifting screw 7, and the output end of the motor is connected to the lifting screw 7. At this time, a slide groove is provided on the opposite sides of the fixed seat 6, a slider is provided in the slide groove, and the screw sleeve 8 is connected to the slider, for example, a connecting rod is provided on the outer wall of the screw sleeve 8, and the connecting rod and the slider are welded or fused together. When the motor drives the lifting screw 7 to rotate, the lifting sleeve cannot rotate along the lifting screw 7 due to the existence of the connecting rod, but moves up and down in the slide groove, and the screw sleeve 8 moves up and drives the anti-blocking member 5 connected thereto to move up in the through groove 21. Since the screen is always vibrating, the anti-blocking member 5 after contacting the screen 3 continuously collides with the screen 3, and the screen 3 continuously hits the anti-blocking member 5, so that the material blocked in the screen hole 31 falls out of the screen hole 31.
[0038] Example 3
[0039] This embodiment is an improvement on the basis of Embodiment 2, the difference being that the driving mechanism 4 is a motor, the lifting assembly comprises a lifting screw 7 and a screw sleeve 8, the output end of the driving mechanism 4 is connected to the lifting screw 7, the screw sleeve 8 is sleeved outside the lifting screw 7, the screw sleeve 8 is slidably connected to the fixed seat 6, and one end of the anti-blocking member 5 is connected to the screw sleeve 8.
[0040] Specifically, Figure 3 As shown, the driving mechanism 4 is a motor, the lifting assembly is a lifting screw 7 and a screw sleeve 8, the screw sleeve 8 is connected to the anti-blocking component 5, and the screw sleeve 8 has an internal thread matching the external thread of the lifting screw 7, and the output end of the motor is connected to the lifting screw 7.
[0041] In order to enable the anti-blocking member 5 to move in the through groove 21, sliding grooves are opened on the opposite sides of the fixed seat 6, and a slider is arranged in the sliding groove, and the screw sleeve 8 is connected to the slider. For example, a connecting rod is arranged on the outer wall of the screw sleeve 8, and the connecting rod and the slider are welded or melted together. When the motor drives the lifting screw 7 to rotate, the lifting sleeve cannot rotate along the lifting screw 7 due to the existence of the connecting rod, but moves up and down in the sliding groove. When the screen 3 needs to be tapped, the screw sleeve 8 moves up and drives the anti-blocking member 5 connected thereto to move up in the through groove 21.
[0042] Example 4
[0043] This embodiment is an improvement made on the basis of Embodiment 1, the difference being that the anti-blocking member 5 is a hollow ring, and the diameter d of the anti-blocking member 5 is ≤ the diameter of the screen 3 ; the anti-blocking member 5 is connected to the screw sleeve 8 via a connecting rod 9 .
[0044] Specifically, Figure 5 As shown, the anti-blocking member 5 is a hollow ring, because the hollow ring anti-blocking member 5 can effectively prevent the material from accumulating on the screen 3 to form a blockage; at the same time, its diameter is less than or equal to the diameter of the screen 3, ensuring that the anti-blocking member 5 will not cause excessive interference to the material during the screening process, thereby ensuring the screening efficiency. Since the anti-blocking member 5 is annular, it is connected to the screw sleeve 8 through a connecting rod 9, and the shape of the connecting rod 9 can be rectangular, triangular, etc., preferably a cylindrical rod, because the material screened from the screen 3 will not be retained on the cylindrical connecting rod 9.
[0045] Example 5
[0046] This embodiment is an improvement made on the basis of Embodiment 4, the difference being that the anti-blocking member 5 is a disc having a plurality of hollow holes 51 , and the aperture of the hollow holes 51 is larger than the diameter of the sieve holes 31 of the sieve 3 that the anti-blocking member 5 hits.
[0047] Specifically, since the hollow annular anti-blocking member 5 is prone to cause stress concentration on the screen 3, thereby affecting the service life and screening efficiency of the screen 3, in order to avoid the above-mentioned stress concentration phenomenon, Figure 6 As shown, the anti-blocking member 5 is configured as a disc having a plurality of hollow holes 51 , and in order to prevent the material screened from the screen 3 from being retained on the disc, the aperture of the hollow holes 51 is configured to be larger than the diameter of the sieve holes 31 of the screen 3 that the anti-blocking member 5 hits.
[0048] Example 6
[0049] This embodiment is an improvement on the embodiment 5, the difference being that the plurality of hollow holes 51 are distributed in a circular array with the center of the disk as the center, and the axes of the plurality of hollow holes 51 are parallel to the axes of the sieve holes 31 of the sieve 3.
[0050] Specifically, in order to allow the material on the screen 3 to pass smoothly through the hollow holes 51 of the disc, rather than being retained in the hollow holes 51, the axis of the hollow holes 51 is parallel to the axis of the screen holes 31 of the screen 3, that is, the axis direction of the hollow holes 51 is consistent with the direction in which the material falls from the screen 3, and both are perpendicular to the ground. In addition, such a design also allows the screened material to be unaffected by the anti-blocking member 5 after being transferred from the screen 3 to the anti-blocking member 5, and to fall directly onto the next screen 3, without affecting the screening efficiency.
[0051] Example 7
[0052] This embodiment is an improvement on the embodiment 6, the difference being that the anti-blocking device further comprises a blocking membrane 10, and the blocking membrane 10 is made of polyester or nylon; the connecting rod 9 passes through the blocking membrane 10, and the blocking membrane 10 is arranged on the inner wall of the screen frame 2 where the through groove 21 is opened.
[0053] Specifically, since the material is easy to fall out of the through slot 21 during the screening process, in order to avoid the above problem, Figure 1 and Figure 2 As shown, a blocking film 10 is also provided on the inner wall of the screen frame 2. More specifically, the blocking film 10 is provided on the inner wall of the screen frame 2 where the through slot 21 is provided, and the blocking film 10 is made of polyester or nylon, and the connecting rod 9 passes through the center of the blocking film 10. Since the connecting rod 9 needs to be raised and lowered in the through slot 21, when the blocking film 10 is installed, the edge of the blocking film 10 is fixed on the inner wall of the screen frame 2, and the blocking film 10 is in a relaxed state, that is, the blocking film 10 has a margin for the connecting rod 9 to move.
[0054] Example 8
[0055] This embodiment is an improvement made on the basis of Embodiment 7, and the difference lies in that an infrared sensor for acquiring the thermal radiation signal of the material on the screen 3 is provided on the anti-blocking member 5 .
[0056] Specifically, in order to further improve the automation of the device, an infrared sensor for detecting blockage of the mesh 31 of the screen 3 can also be provided on the anti-blocking member 5. Of course, in this case, a controller needs to be used together, that is, the infrared sensor can determine whether the screen 3 is blocked by detecting the thermal radiation of the material on the screen 3. When the screen 3 is blocked, the material will form a layer of coverage on the screen 3, which will affect the thermal radiation characteristics of the material on the screen 3. The infrared sensor can capture this change and determine whether the screen 3 is blocked by analyzing the difference in the thermal radiation signal, and then feed the signal back to the controller to control the motor to drive the lifting assembly to rise and drive the anti-blocking member 5 to move toward the screen 3 in the through slot 21 and abut against it.
[0057] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.
Claims
1. A vibrating screen, comprising a vibrating platform, on which is disposed at least one screen frame, in which is disposed a screen mesh, the screen mesh having a plurality of screen holes for screening materials placed on the screen mesh, characterized in that: The vibrating screen further comprises an anti-blocking device, which comprises a driving mechanism and an anti-blocking member; The anti-blocking member is located on a side of the screen close to the vibration platform; A through slot is provided on the side wall of the screen frame and penetrates the side wall for movement of the anti-blocking member, and the length direction of the through slot is parallel to the normal direction of the screen plane; One end of the anti-blocking member extends from the through slot and is connected to the output end of the driving mechanism. The driving mechanism drives the anti-blocking member to move toward the screen along the length direction of the through slot and abut against the screen.
2. The vibrating screen according to claim 1, characterized in that: The anti-blocking device also includes a fixed seat and a lifting assembly; wherein the driving mechanism, the lifting assembly and the anti-blocking piece are all arranged on the fixed seat, and the fixed seat is arranged on the outer wall of the screen frame where the through slot is opened; one end of the anti-blocking piece is connected to the lifting assembly, and the output end of the driving mechanism is connected to the lifting assembly, which is used to drive the lifting assembly to drive the anti-blocking piece to move toward the screen along the length direction of the through slot and abut against it.
3. The vibrating screen according to claim 2, characterized in that: The driving mechanism is a motor, and the lifting assembly includes a lifting screw and a screw sleeve. The output end of the driving mechanism is connected to the lifting screw, and the screw sleeve is sleeved outside the lifting screw. The screw sleeve is slidably connected to the fixed seat, and one end of the anti-blocking member is connected to the screw sleeve.
4. The vibrating screen according to claim 1, characterized in that: The anti-blocking member is a hollow circular ring, and the diameter d of the anti-blocking member is less than or equal to the diameter of the screen; the anti-blocking member is connected to the screw sleeve via a connecting rod.
5. The vibrating screen according to claim 4, characterized in that: The anti-blocking member is a disk with a plurality of hollow holes, and the aperture of the hollow holes is larger than the diameter of the mesh of the sieve that the anti-blocking member hits.
6. The vibrating screen according to claim 5, characterized in that: The plurality of hollow holes are distributed in a circular array with the center of the disk as the center, and the axes of the plurality of hollow holes are parallel to the axis of the sieve holes of the sieve.
7. The vibrating screen according to claim 6, characterized in that: The anti-blocking device also includes a blocking film, which is a component made of polyester or nylon; the connecting rod passes through the blocking film, and the blocking film is arranged on the inner wall of the screen frame where the through groove is opened.
8. The vibrating screen according to claim 7, characterized in that: The anti-blocking member is provided with an infrared sensor for acquiring the thermal radiation signal of the material on the screen.