Excitation striking mechanism for dry screening
The vibration impact mechanism of dry screening directly acts on the impacting parts and vibration components of the screen, solving the problems of high vibration stiffness and high power input of the main body of the equipment in the existing technology, and realizing efficient screening and energy saving and emission reduction.
Patent Information
- Application Number
- CN202423162378.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The existing dry screening vibrating screen has its overall excitation system installed on the main body of the equipment, resulting in excessive vibrating weight. This requires the main body of the equipment to have high vibration stiffness and strength, as well as high power input.
The dry screening vibration impact mechanism directly acts on the screen through the impacting parts and related vibration components, reducing the weight of the vibrating parts. It also drives the impacting parts to vibrate at high frequency through an independent excitation power source, reducing the rigidity and power requirements of the main body of the equipment.
It significantly reduces the vibration burden on the equipment, lowers the power input requirements, improves screening efficiency and reliability, and enhances the flexibility and adaptability of the equipment structure.
Smart Images
Figure CN223669643U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to dry method screening technical field, specifically, relate to a dry method screening's exciting and striking mechanism. BACKGROUND
[0002] In the dry method screening operation, the vibrating screen has been an important component, and currently the vibrating screen of the dry method screening mainly has the circular motion screen, the banana screen, the flip-flow screen and the string screen, and the common point of all vibrating screens is that the whole exciting system is installed on the equipment main body, the exciter drives the screen box to make high-frequency reciprocating motion, so that the screen mesh produces high-frequency vibration to realize the dry method screening of materials.
[0003] But the above vibrating screen form also has the common disadvantage: it is just because that the whole exciting system is installed on the equipment main body, leading to the excessive vibration weight, so the equipment main body needs to have high vibration stiffness and strength to ensure the operation reliability, in addition, also needs the great power input to ensure the normal vibration parameter. UTILITY MODEL CONTENTS
[0004] The utility model provides a dry method screening's exciting and striking mechanism, solves the whole exciting system of related art in installation on the equipment main body, leading to the excessive vibration weight, the problem of high requirement to equipment strength and high power input required.
[0005] The technical scheme of the utility model is as follows:
[0006] A dry method screening's exciting and striking mechanism is used for hitting the screen mesh, and comprises:
[0007] A base body;
[0008] A hitting piece is movably arranged relative to the base body, and the hitting piece is located at one side of the screen mesh;
[0009] A hitting part is arranged on the hitting piece, and the hitting part is configured to be in contact with the screen mesh;
[0010] An exciting vibration power source is arranged on the hitting piece, and the exciting vibration power source is used for driving the hitting piece to move and driving the hitting part to hit the screen mesh.
[0011] As a further technical scheme, further comprising:
[0012] A shaft part is arranged on the base body, and the shaft part is configured below the screen mesh, the hitting piece is sleeved on the shaft part and is rotatably arranged relative to the shaft part, the hitting part is arranged on the top of the hitting piece, and the exciting vibration power source is arranged on the bottom of the hitting piece.
[0013] As a further technical scheme, the exciting vibration power source is an oscillating motor, the hitting parts are two, the two hitting parts are symmetrically arranged, and the two hitting parts are respectively located on the two sides of the shaft part, and the exciting vibration power source is used for driving the hitting part to reciprocate.
[0014] As a further technical scheme, the exciting vibration power source is one, and the hitting parts are several, the several hitting parts are sequentially arranged along the shaft part in the axial direction, and the several hitting parts are all welded on the hitting part.
[0015] As a further technical scheme, it further comprises:
[0016] The hitting bar is sleeved on the hitting part, and the several hitting parts all penetrate the hitting bar, and the hitting bar is a polyurethane hitting bar.
[0017] As a further technical scheme, it further comprises:
[0018] The flange part is arranged on the base body through the flange part at the two ends of the shaft part.
[0019] As a further technical scheme, it further comprises:
[0020] The shock absorbing spring is sleeved on the end of the shaft part, and the shaft part is arranged on the flange part through the shock absorbing spring at the two ends.
[0021] As a further technical scheme, the width of the top of the hitting part is greater than the width of the bottom of the hitting part.
[0022] As a further technical scheme, the cross section of the hitting part is isosceles trapezoidal, and the trapezoidal inclined edge of the hitting part is concave arc surface.
[0023] As a further technical scheme, the exciting vibration power source is detachably arranged on the bottom of the hitting part through the fastener.
[0024] The working principle and beneficial effects of the utility model are as follows:
[0025] 1、Reduce the participation weight: unlike the traditional vibrating screen, the whole exciting system is installed on the equipment main body, the exciting and hitting mechanism of the dry screening method only participates in the vibration through the hitting part and the related exciting parts, and directly acts on the screen, which significantly reduces the participation weight, directly realizes the high-frequency and high-vibration of the screen surface, which makes the equipment main body not need to have too high vibration stiffness and strength, reduces the requirement for the equipment main body structure, and improves the screening efficiency and reliability of the screening machine.
[0026] 2. Reduce the power demand: due to the reduced mass of the vibration, the required power input is greatly reduced when reaching the same screening effect, the vibration effect of the screen surface is more obvious, which is beneficial to energy saving and emission reduction.
[0027] 3. The flexibility and adaptability of the device structure are enhanced: the relatively independent design of the excitation striking mechanism makes it convenient to apply to different specifications and different types of screen systems, and can be arranged in series and parallel, and the vibration parameters can be adjusted according to the material form to realize efficient screening of different materials. BRIEF DESCRIPTION OF DRAWINGS
[0028] The above characteristics, technical features, advantages and implementation modes of the present application will be further described in a clear and understandable manner in combination with the preferred embodiments and the accompanying drawings.
[0029] Figure 1 It is a schematic diagram of the excitation striking mechanism for dry screening in the present application;
[0030] Figure 2 It is an initial state diagram of the striking member in the present application;
[0031] Figure 3 It is a first state diagram of the striking member swing in the present application;
[0032] Figure 4 It is a second state diagram of the striking member swing in the present application;
[0033] Figure 5 It is a schematic diagram of the shock absorbing spring in the present application;
[0034] Figure 6 It is the present application Figure 1 A enlarged view of the A part in the present application.
[0035] In the figure: 1, screen, 2, base body, 3, striking member, 301, inner concave arc surface, 4, striking part, 5, excitation power source, 6, shaft part, 7, striking bar, 8, flange, 9, shock absorbing spring. DETAILED DESCRIPTION
[0036] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the specific implementation modes of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor, and other implementation modes can also be obtained.
[0037] For the sake of simplicity of the drawings, only the parts related to the utility model are shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown schematically, or only one of them is marked. In this text, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".
[0038] In this text, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0039] In addition, in the description of the present application, the terms "first", "second" and the like are only used for differentiation and description, and cannot be understood as indicating or implying relative importance.
[0040] Reference Figures 1-6 For the first embodiment of the utility model, a dry screening vibration striking mechanism is proposed for striking the screen 1, which comprises: a base body 2; a striking part 3 is movably arranged relative to the base body 2, and the striking part 3 is located on one side of the screen 1; a striking part 4 is arranged on the striking part 3, and the striking part 4 is configured to contact the screen 1; a vibration power source 5 is arranged on the striking part 3, and the vibration power source 5 is used to drive the striking part 3 to move and drive the striking part 4 to strike the screen 1.
[0041] In this embodiment, the working process of the dry screening vibration striking mechanism is as follows:
[0042] The vibration power source 5 is started and power output is generated, and then the striking part 3 moves relative to the base body 2 according to the set motion track under the action of the vibration power source 5, for example, it can be up and down reciprocating motion, left and right swing or rotary motion, etc. With the movement of the striking part 3, the striking part 4 detachably mounted or welded on the striking part 3 moves synchronously, and periodically contacts the screen 1, so that the material on the screen surface jumps, stratifies and sieves, thereby realizing the dry and efficient screening operation of the material; in the whole process, by controlling the parameters of the vibration power source 5, such as frequency, amplitude, force, etc., the vibration characteristics of the screen 1 can be adjusted to adapt to different materials and screening requirements.
[0043] At present, the possible forms of the striking part 3 are as follows:
[0044] First, no matter how to select the vibration excitation source 5, the up-down reciprocating linear motion and the left-right swinging motion need to be opened in the corresponding sliding groove in the base body 2 in advance, the corresponding part of the hitting piece 3 is integrally formed with a protrusion, the protrusion is clamped in the sliding groove, and the hitting piece 3 can be guaranteed to move along the specified path reciprocatingly; secondly, for the rotating motion, a rotating shaft is needed to be configured, and the hitting piece 3 can be set through the bearing sleeve.
[0045] At the same time, the configuration form of each component is as follows:
[0046] The base body 2 can adopt a frame structure and be welded from a metal material (such as carbon steel or stainless steel), has sufficient strength and stability, and can be installed on one side or the bottom of the screen box through bolt connection or welding and the like.
[0047] The hitting piece 3 can be designed in different shapes such as a rod, a block or a disc, for example, when the rod-shaped hitting piece 3 is adopted, one end thereof is connected with the vibration excitation source 5, and the other end is installed with the hitting part 4, and the length and diameter of the rod are designed to adjust the transmission effect of the hitting force; for example, when the block-shaped hitting piece 3 is adopted, a plurality of hitting parts 4 can be arranged at different positions on the surface thereof to increase the hitting area and the uniformity of the hitting effect; for example, when the disc-shaped hitting piece 3 is adopted, the disc can be designed as a disc with an eccentric protrusion, and when the disc rotates, the eccentric protrusion serves as the hitting part 4 to hit the screen 1.
[0048] The hitting part 4 can use a rubber block, a metal ball or a hard alloy protrusion, can control the impact force on the screen 1 in the hitting process, and reduces the wear of the screen 1; the vibration excitation source 5 usually selects an electric vibration exciter such as an eccentric motor, a linear vibration motor, a pneumatic or hydraulic vibration exciter, and the installation position can be determined according to the motion form and structure design of the hitting piece 3, is generally installed near the center of gravity of the hitting piece 3 or at a position capable of generating the maximum driving torque to ensure the stability and efficiency of the motion of the hitting piece 3.
[0049] Further, the shaft part 6 is arranged on the base body 2, the shaft part 6 is arranged below the screen 1, the hitting piece 3 is sleeved on the shaft part 6 and is arranged to rotate relative to the shaft part 6, the hitting part 4 is arranged at the top of the hitting piece 3, and the vibration excitation source 5 is arranged at the bottom of the hitting piece 3.
[0050] In the embodiment, the reciprocating left-right arc swinging movement is arranged, the eccentric inertia force of the vibration motor can be better utilized, compared with the simple linear reciprocating motion, the vibration excitation source can provide more uniform and more continuous vibration force distribution, the cylindrical shaft part 6 is arranged to provide stable support for the hitting piece 3, the shaft part 6 can be integrally formed with the base body 2 or assembled by using a flange structure, and the shaft part 6 is arranged below the screen 1, the space below the screen 1 is fully utilized, the layout of the whole vibration hitting mechanism is more compact and reasonable, and space interference is not caused to the material feeding, screening process and discharge of the materials on the screen and below the screen and the like above the screen 1.
[0051] In order to ensure the hitting effect, the hitting part 4 is in contact with the screen 1 above the hitting part 3, the hitting part 4 needs to be arranged at the top of the hitting part 3, the transmission path of the force is relatively short and direct, so that the screen 1 can receive stronger and more concentrated exciting force; and the exciting vibration source 5 is arranged at the bottom of the hitting part 3, which provides stable driving torque on the one hand, and has obvious convenience in the installation and maintenance process of the equipment on the other hand.
[0052] Further, the exciting vibration source 5 is an oscillating motor, the hitting part 4 is two, the two hitting parts 4 are symmetrically arranged, and the two hitting parts 4 are respectively located on both sides of the shaft part 6, and the exciting vibration source 5 is used to drive the hitting part 3 to reciprocating swing.
[0053] In the embodiment, Figures 2-4 For one vibration period, the two hitting parts 4 symmetrically arranged on both sides of the shaft part 6 can make the screen 1 uniformly stressed in the horizontal direction when hitting the screen 1. This uniform stress mode can effectively prevent the screen 1 from being deformed or damaged due to excessive local stress, on the one hand, and on the other hand, it is suitable for the hitting part 3 to reciprocating swing left and right in an arc, the two hitting parts 4 alternately hit the screen 1, the exciting effect is more significant, and it is more suitable for some materials that are difficult to screen or occasions that require high screening precision.
[0054] Further, the exciting vibration source 5 is one, the hitting part 4 is several, the several hitting parts 4 are sequentially arranged along the shaft part 6 in the axial direction, and the several hitting parts 4 are all welded on the hitting part 3.
[0055] In the embodiment, in order to simplify the structure and at the same time ensure that the hitting area covers most of the screen 1, one exciting vibration source 5 and several hitting parts 4 are configured, the several hitting parts 4 are sequentially arranged along the shaft part 6 in the axial direction, and the length direction of the shaft part 6 basically covers the length direction of the entire screen 1, avoiding the situation that the materials are locally accumulated or not fully processed on the screen 1.
[0056] The single exciting vibration source 5 is arranged at the center bottom of the entire hitting part 3 sleeved on the shaft part 6 through fasteners, plays an exciting role, and can also meet the demand for power; and the hitting part 4 adopts a welding mode, which can ensure the stable connection between the hitting part 4 and the hitting part 3, and avoid looseness.
[0057] Further, it further comprises: a hitting strip 7 sleeved on the hitting part 4, and the several hitting parts 4 all penetrate the hitting strip 7, and the hitting strip 7 is a polyurethane hitting strip.
[0058] In this embodiment, based on the above, further considerations are made to enhance the hitting synergy of the plurality of hitting parts 4 and to avoid damage to the screen 1, and to have a certain buffering protection effect, a polyurethane hitting strip 7 is added, which is shaped to fit the plurality of hitting parts 4 arranged along the shaft part 6 in sequence, and is connected to form a whole. This synergy helps to produce more uniform and stable vibration effect on the screen 1. As for the selection of polyurethane, due to its wear resistance and corrosion resistance, it can maintain good performance state and reduce part noise in long-term frequent contact with the screen 1 and in screening working environment (may exist dust, water vapor, etc.).
[0059] Further, the shaft part 6 is arranged on the base body 2 through the flange 8 at both ends.
[0060] Further, the shaft part 6 is arranged on the base body 2 through the flange 8 at both ends.
[0061] In this embodiment, in order to facilitate disassembly and maintenance, the shaft part 6 is arranged on the base body 2 through the flange 8 at both ends. On the one hand, a reliable and accurate connection method is provided. On the other hand, the shaft part 6 can be further sleeved with a shock absorbing spring 9 at the end to realize flexible connection of the shaft part 6 and the flange 8, avoid vibration friction between the shaft part 6 following the high-frequency vibration of the hitting part 3 and the rigidly connected flange 8, and thus cause rapid damage to the workpiece. Specifically, the shock absorbing spring 9 can be selected as a rubber shock absorbing spring 9 to effectively absorb and buffer the impact force and vibration generated by the hitting part 3 during movement, improve the stability and reliability of the equipment operation.
[0062] Further, the top width of the hitting part 3 is greater than the bottom width of the hitting part 3.
[0063] Further, the hitting part 3 is in the shape of an isosceles trapezoid, and the trapezoidal bevel of the hitting part 3 is in the shape of a concave arc surface 301.
[0064] Further, the vibration power source 5 is detachably arranged at the bottom of the hitting part 3 through a fastener.
[0065] In this embodiment, specifically, the cross section of the hitting part 3 is configured as an isosceles trapezoid, and a concave arc surface 301 is arranged on the bevel thereof. The design idea of being wide at the top and narrow at the bottom is adopted, mainly to facilitate the arrangement of the hitting part 4 and the hitting strip 7 at the top, and to reduce the overall vibration weight and improve the vibration effect.
[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.
Claims
1. A dry screening excitation striking mechanism for striking a screen (1), characterized in that, It includes: The base (2); The striker (3) is movably arranged relative to the base (2), and the striker (3) is located on one side of the screen (1); The hitting part (4) is arranged on the striker (3), and the hitting part (4) is configured to contact the screen (1); The vibration excitation source (5) is arranged on the striker (3), and the vibration excitation source (5) is used to drive the striker (3) to move and drive the hitting part (4) to hit the screen (1); It also includes: The shaft part (6) is arranged on the base (2), the shaft part (6) is arranged below the screen (1), the striker (3) is sleeved on the shaft part (6), and the striker (3) is rotatably arranged relative to the shaft part (6), the hitting part (4) is arranged on the top of the striker (3), and the vibration excitation source (5) is arranged on the bottom of the striker (3).
2. A vibratory impact mechanism for dry screening according to claim 1, wherein, The vibration excitation source (5) is an oscillating motor, the hitting part (4) is two, the two hitting parts (4) are symmetrically arranged, and the two hitting parts (4) are respectively located on both sides of the shaft part (6), and the vibration excitation source (5) is used to drive the striker (3) to reciprocate.
3. A vibratory impact mechanism for dry screening according to claim 1, wherein, The vibration excitation source (5) is one, the hitting part (4) is several, the several hitting parts (4) are arranged in sequence along the shaft part (6) in the axial direction, and the several hitting parts (4) are all welded on the striker (3).
4. A vibratory impact mechanism for dry screening according to claim 3, wherein, It also includes: The hitting bar (7) is sleeved on the hitting part (4), and the several hitting parts (4) all penetrate the hitting bar (7), and the hitting bar (7) is a polyurethane hitting bar.
5. A vibratory impact mechanism for dry screening according to claim 1, wherein, It also includes: The flange (8) is arranged on the base (2) through the flange (8) at both ends of the shaft part (6).
6. A dry screening impingement mechanism according to claim 5, wherein, It also includes: The shock absorbing spring (9) is sleeved on the end of the shaft part (6), and the shaft part (6) is arranged on the flange (8) through the shock absorbing spring (9) at both ends.
7. A vibratory impact mechanism for dry screening according to claim 1, wherein, The top width of the striker (3) is greater than the bottom width of the striker (3).
8. A vibratory impact mechanism for dry screening according to claim 7, wherein, The cross section of the striker (3) is isosceles trapezoidal, and the trapezoidal inclined edge of the striker (3) is a concave arc surface (301).
9. A vibratory impact mechanism for dry screening according to claim 1, wherein, The vibration excitation source (5) is detachably arranged on the bottom of the striker (3) through the fastener.