Negative pressure vibrating screen with screen mesh convenient to replace
By designing inclined slot notches and locking components in the negative pressure vibrating screen, the sliding self-locking of the screen is solved, and the problem of inconvenient replacement of the screen in the prior art is improved, and the replacement efficiency is reduced and the production impact is reduced.
Patent Information
- Application Number
- CN202420832852.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-19
AI Technical Summary
The existing negative pressure vibrating screen requires disassembly of tools when replacing the screen, which is inconvenient and time-consuming, affecting production efficiency.
With an inclined slot notch and locking assembly, the screen body can be slidably inserted and locked, and can be quickly installed and removed through elastic locking pins and hooks, eliminating tool removal steps.
It greatly improves the efficiency and speed of screen replacement, reduces the impact on production, and simplifies the operation process.
Smart Images
Figure CN222174841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vibrating screens, in particular to a negative pressure vibrating screen which is convenient for replacing a screen mesh. Background Art
[0002] Negative pressure vibrating screen is a common screening equipment. Its working principle is to use the inertial force generated by mechanical vibration and the negative pressure effect of the screen to screen and grade the materials. Negative pressure vibrating screen is mainly composed of screen box, screen, vibrator, negative pressure device, etc. During operation, the motor drives the eccentric block to rotate to generate centrifugal force, causing the screen box to vibrate. The material on the screen is subjected to the vibration force to produce jumping, rolling and other movements, thereby loosening and stratifying the material. At the same time, the negative pressure device generates negative pressure, which causes the material to generate adsorption force on the screen, further promoting the loosening and stratification of the material. Particles of different sizes are separated through the mesh of the screen during jumping, rolling and other movements, realizing the screening and grading of the material.
[0003] Negative pressure vibrating screens are widely used in the screening of particulate materials in the chemical, pharmaceutical, food, mining, metallurgical and other industries. They are particularly suitable for materials with large specific gravity, fine particles and easy agglomeration, such as powders and microparticles. For materials with different particle sizes, screens with different mesh sizes need to be replaced. To replace the existing screen, you need to use tools to remove the screen frame above the machine, then take out the mesh frame, replace the new screen, and then use tools to tighten the screen frame bolts. Therefore, the operation is inconvenient and very time-consuming and labor-intensive. In factory production, once the screen needs to be replaced, it will take a long time to shut down. The longer the time to replace the screen, the greater the impact on production. Utility Model Content
[0004] The utility model aims to provide a negative pressure vibration screen which is convenient for replacing the screen, and the screen can be replaced more conveniently and quickly. The screen can be slidably connected and self-locked, thereby reducing the replacement time.
[0005] The embodiment of the utility model is realized through the following technical scheme: a negative pressure vibrating screen which is convenient for replacing the screen, comprising a bracket, a screen box, a screen body and a vibrator, the vibrator being arranged on both sides of the screen box, the inner wall of the screen box being provided with inclined slot openings, and the two sides of the screen body being slidably inserted into the slot openings; the screen box is cross-arranged with at least one horizontally arranged mounting bar, the mounting bar is located below the slot opening, and a locking assembly is installed on the upper surface of the mounting bar, the locking assembly comprises a hook and an elastic locking pin, one end of the hook is fixed on the mounting bar, and the elastic locking pin extends from below the mounting bar; a hanging buckle is provided at the lower end of the screen body, and when the screen body moves along the slot opening, until the hanging buckle is retracted by pressing down the elastic locking pin, the hanging buckle is stuck between the elastic locking pin and the hook.
[0006] Preferably, a U-shaped hanging plate is provided below the mounting bar, the elastic locking pin passes through the U-shaped hanging plate, a reset spring is sleeved on the elastic locking pin, and the reset spring is stuck in the U-shaped hanging plate; the lower end of the elastic locking pin is connected to an electric cylinder.
[0007] Preferably, a shielding plate is further included, one end of which is connected to the edge of the screen body, and the other end of which extends to the edge of the screen box and contacts therewith.
[0008] Preferably, a first discharge port is provided at the front end of the screen box, a second discharge port is provided at the lower end of the screen box, and a feed port is provided at the rear end of the screen box.
[0009] Preferably, the slot opening is inclined toward one side of the first discharge port.
[0010] Preferably, a material receiving funnel is provided beside the first discharge port.
[0011] Preferably, one side of the hook is a sloped structure, and the top of the elastic locking pin is a hemispherical structure.
[0012] Preferably, both side ends of the screen body are round head structures, and the cross section of the slot opening is arc-shaped.
[0013] The technical solution of the embodiments of the utility model has at least the following advantages and beneficial effects: compared with the prior art, the utility model sets a slot opening so that the screen is inserted from one end of the slot opening, and because the slot opening is in an inclined state, when the screen body gradually moves downward, the hook will contact the elastic locking pin and press the hook to complete the locking. When the screen body needs to be disassembled and replaced, the screen body can be pulled out and replaced by simply pressing down the elastic locking pin, which greatly improves the replacement efficiency and does not require disassembly tools, shortens the replacement time, and reduces the impact on production. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 A schematic diagram of the structure of the vibrating screen provided in an embodiment of the utility model before the screen is installed;
[0016] Figure 2 A longitudinal cross-sectional view of a negative pressure vibrating screen for easy replacement of the screen mesh in the utility model;
[0017] Figure 3 for Figure 2 A local enlarged view of point A in FIG.
[0018] Figure 4 It is a transverse cross-sectional view of the negative pressure vibrating screen in the utility model for facilitating the replacement of the screen mesh;
[0019] Figure 5 for Figure 3 A local enlarged view of point B in FIG.
[0020] Figure 6 It is a structural schematic diagram of the screen body in the utility model.
[0021] Icons: 1- bracket, 2- screen box, 21- slot opening, 22- first discharge port, 23- feed port, 24- second discharge port, 3- screen body, 31- hanging buckle, 4- vibrator, 5- mounting bar, 6- locking assembly, 61- hook, 62- elastic locking pin, 63- U-shaped hanging plate, 64- reset spring, 65- electric cylinder, 7- shielding plate, 8- receiving funnel. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0025] Example
[0026] The following is further described in conjunction with specific embodiments. Figure 1-Figure 6As shown, the present embodiment is a negative pressure vibrating screen which is convenient for replacing the screen, comprising a bracket 1, a screen box 2, a screen body 3 and a vibrator 4, the vibrator 4 being arranged on both sides of the screen box 2, the inner wall of the screen box 2 being provided with an inclined slot opening 21, the two sides of the screen body 3 being slidably inserted into the slot opening 21; the screen box 2 is cross-arranged with at least one horizontally arranged mounting bar 5, the mounting bar 5 is located below the slot opening 21, and a locking assembly 6 is installed on the upper surface of the mounting bar 5, the locking assembly 6 comprises a hook 61 and an elastic locking pin 62, one end of the hook 61 is fixed on the mounting bar 5, and the elastic locking pin 62 extends from below the mounting bar 5; a hanging buckle 31 is provided at the lower end of the screen body 3, when the screen body 3 moves along the slot opening 21 until the hanging buckle 31 is retracted by pressing down the elastic locking pin 62, so that the hanging buckle 31 is stuck between the elastic locking pin 62 and the hook 61; specifically, the vibrating screen in the present utility model By setting the slot openings 21, the two ends of the screen body 3 can be inserted into the slot openings 21 for sliding, and because the slot openings 21 are in an inclined state, the installation strip 5 is located below the slot openings 21 in a horizontal state, and then the screen body 3 is gradually moved down along the slot openings 21. Under the action of gravity and manual push, the screen body 3 can be pushed for installation with relatively little effort. When the distance between the screen body 3 and the installation strip 5 gradually becomes smaller, until the hook 31 contacts the elastic locking pin 62 to squeeze and shrink it, and then the hook 31 is locked in the closed opening of the hook 61 and the elastic locking pin 62, the elastic locking pin 62 is reset and extended, and the screen body 3 is pulled back at this time. It cannot move due to the obstruction of the elastic locking pin 62, thereby completing the sliding docking self-locking; and when the screen body 3 is replaced according to actual use needs, it is only necessary to rely on external force to pull down the elastic locking pin 62 to move downward, and then pull the screen body 3 out as a whole, and the operation is simple and fast.
[0027] It is worth noting that, in order to facilitate the replacement of the screen body 3, a handle or a hanging ring can be provided at the rear end of the screen body 3, so that the screen body 3 can be separated from the slot opening 21 by pulling by hand or by a rope.
[0028] Reference Figure 5 As shown, a U-shaped hanging plate 63 is provided under the mounting strip 5 in this embodiment, and an elastic locking pin 62 passes through the U-shaped hanging plate 63. A reset spring 64 is sleeved on the elastic locking pin 62, and the reset spring 64 is stuck in the U-shaped hanging plate 63; the lower end of the elastic locking pin 62 is connected to an electric cylinder 65; specifically, when it is necessary to replace the screen body 3, an electric control switch can be used to energize the electric cylinder 65, so that the electric cylinder 65 pulls the elastic locking pin 62 to compress the reset spring 64 and move it downward, so that the opening of the hook 61 is normally opened, and the screen body 3 can be taken out toward the high side of the slot opening 21.
[0029] like Figure 2 , Figure 4 and Figure 6As shown, the present embodiment further includes a baffle plate 7, one end of which is connected to the edge of the screen body 3, and the other end of the baffle plate 7 extends to the edge of the screen box 2 and contacts therewith; specifically, the baffle plate 7 is provided to block the slot opening 21 and the surface of the screen body 3, so as to prevent the screened material particles from entering the gap between the screen body 3 and the slot opening 21, causing the screen body 3 and the slot to be stuck.
[0030] like Figure 1 As shown, a first discharge port 22 is provided at the front end of the screen box 2, a second discharge port 24 is provided at the lower end of the screen box 2, and a feed port 23 is provided at the rear end of the screen box 2; specifically, the material to be screened is vertically input from one end of the feed port 23, the liquid and objects with smaller particle sizes flow out from the second discharge port 24, and the materials with larger particle sizes are discharged from the first discharge port 22.
[0031] In addition, if Figure 1 As shown, the slot opening 21 in this embodiment is inclined toward the first discharge opening 22 .
[0032] like Figure 1 As shown, in order to facilitate the centralized collection of materials, a material receiving funnel 8 is provided beside the first discharge port 22 .
[0033] Reference Figure 5 As shown, one side of the hook 31 in this embodiment is a sloped structure, and the top of the elastic locking pin 62 is a hemispherical structure; specifically, when the screen body 3 slides downward along the slot opening 21, one side of the sloped structure contacts the rolling slope of the hemispherical structure at the top of the elastic locking pin 62, so that the elastic locking pin 62 can be pressed down; and when the hook 31 is completely moved to the left side of the elastic locking pin 62, the hook 31 can no longer be pulled back.
[0034] Reference Figure 2-3 As shown, in order to reduce the friction force during the sliding process between the screen body 3 and the slot opening 21, the two side ends of the screen body 3 are rounded structures, and the cross section of the slot opening 21 is arc-shaped.
[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A negative pressure vibrating screen for easy replacement of screens, comprising a bracket (1), a screen box (2), a screen body (3) and a vibrator (4), wherein the vibrator (4) is arranged on both sides of the screen box (2), and is characterized in that: The inner wall of the screen box (2) is provided with slot openings (21) arranged obliquely, and the two sides of the screen body (3) are slidably inserted into the slot openings (21); The screen box (2) is provided with at least one horizontally arranged mounting bar (5) across, the mounting bar (5) being located below the slot opening (21), and a locking assembly (6) being installed on the upper surface of the mounting bar (5), the locking assembly (6) comprising a hook (61) and an elastic locking pin (62), one end of the hook (61) being fixed on the mounting bar (5), and the elastic locking pin (62) extending from below the mounting bar (5); A hook (31) is provided at the lower end of the screen body (3). When the screen body (3) moves along the slot opening (21), until the hook (31) is retracted by pressing down the elastic locking pin (62), the hook (31) is clamped between the elastic locking pin (62) and the hook (61).
2. The negative pressure vibrating screen for easy replacement of screen mesh according to claim 1, characterized in that: A U-shaped hanging plate (63) is provided below the installation bar (5), the elastic locking pin (62) passes through the U-shaped hanging plate (63), a return spring (64) is sleeved on the elastic locking pin (62), and the return spring (64) is clamped in the U-shaped hanging plate (63); The lower end of the elastic locking pin (62) is connected to an electric cylinder (65).
3. The negative pressure vibrating screen for easy replacement of the screen according to claim 2, characterized in that: It also comprises a shielding plate (7), one end of which is connected to the edge of the screen body (3), and the other end of which extends to the edge of the screen box (2) and contacts therewith.
4. The negative pressure vibrating screen for easy replacement of screen mesh according to claim 3, characterized in that: The front end of the screen box (2) is provided with a first discharge port (22), the lower end of the screen box (2) is provided with a second discharge port (24), and the rear end of the screen box (2) is provided with a feed port (23).
5. The negative pressure vibrating screen for easy replacement of screen mesh according to claim 4, characterized in that: The slot opening (21) is inclined toward one side of the first discharge opening (22).
6. The negative pressure vibrating screen for easy replacement of screen mesh according to claim 5, characterized in that: A material receiving funnel (8) is provided beside the first material outlet (22).
7. The negative pressure vibrating screen for easy replacement of screen mesh according to claim 1, characterized in that: One side of the hook (31) is a sloped structure, and the top end of the elastic locking pin (62) is a hemispherical structure.
8. The negative pressure vibrating screen for easy replacement of screen mesh according to claim 1, characterized in that: Both side ends of the screen body (3) are rounded structures, and the cross section of the slot opening (21) is arc-shaped.