Screen anti-blocking device

Abstract

The utility model provides a screen anti-blocking device. The screen anti-blocking device comprises a screen body, a sliding plate, a rotating assembly, a dredging rod, a rack and a driving piece. The sliding plate is slidably connected to the back face of the screen body, the rotating assembly is rotationally connected to the sliding plate, the rack is fixedly arranged on the back face of the screen body, and sliding of the sliding plate can drive the rotating assembly to rotate through the rack. A plurality of filtering holes are formed in the screen body, a plurality of dredging rods are arranged on the rotating assembly, and the dredging rods are flexible rods and can be inserted into the filtering holes; the driving piece is arranged on the back face of the screen body and connected with the sliding plate, and the driving piece can drive the sliding plate to slide. The dredging rod in the screen mesh anti-blocking device can penetrate into the filtering holes back and forth to dredge the blocked filtering holes.

Description

Technical Field

[0001] The utility model relates to the technical field of sand making, in particular to a screen anti-blocking device. Background Art

[0002] The mined large stones such as limestone are directly provided to the coarse crushing workshop as raw materials. The stones are fed to the feeding equipment such as the grizzly feeder, and then ground into sand step by step. The particle size of the sand particles varies greatly during the sand making process. It is necessary to go through multiple coarse and fine crushing and screening to obtain the sand of the required particle size. The whole process requires the use of vibrating screens, anti-blocking screens and other screen structures. However, due to the different specifications of the sand particles during the crushing, the hardness is relatively large, the shape is irregular and even sharp, and then when passing through the screen, it is easy to get stuck in the screen hole, affecting the normal operation of the screen. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model proposes a screen anti-blocking device to solve the technical problem that the screen is easily blocked in the sand making process mentioned in the above background technology.

[0004] In order to solve this technical problem, the technical solution adopted by the utility model is:

[0005] A screen anti-blocking device comprises a screen body, a sliding plate, a rotating assembly, a dredging rod, a rack and a driving member;

[0006] The sliding plate is slidably connected to the back of the screen body, the rotating assembly is rotatably connected to the sliding plate, the rack is fixedly arranged on the back of the screen body, and the sliding of the sliding plate can drive the rotating assembly to rotate through the rack;

[0007] The screen body is provided with a plurality of filtering holes, and the rotating assembly is provided with a plurality of dredging rods, wherein the dredging rods are flexible rods and can be inserted into the filtering holes;

[0008] The driving member is arranged on the back side of the screen body and is connected to the sliding plate. The driving member can drive the sliding plate to slide.

[0009] Further, the filter hole is a trumpet hole, and the end close to the rotating assembly is larger than the end away from the rotating assembly. Further, the rotating assembly includes a rotating rod and a gear; the rotating rod is rotatably connected to the sliding plate, and the gear is coaxially fixed on the rotating rod and meshes with the rack. Further, the rotating rod is also detachably coaxially provided with a fixing sleeve, and the dredging rod is fixed on the fixing sleeve.

[0010] Furthermore, the driving member is a motor, which is connected to the sliding plate via a connecting rope, and is also provided with an elastic rope, one end of which is connected to the screen body, and the other end of which is connected to the sliding plate.

[0011] Compared with the prior art, the advancement of this application is:

[0012] In the present application, the sliding of the sliding plate drives the rotating component to slide and rotate during the sliding process, and the dredging rods on the rotating component slide and rotate therewith. Due to their own flexible characteristics, each dredging rod is in an extruded state between each filter hole. When passing through the filter hole, it is pushed into the filter hole by its own elasticity to dredge the filter. In this way, the filter holes of the screen body are dredged, and blockage of the screen body is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0014] Figure 1 A schematic diagram of a screen anti-blocking device provided in one embodiment of the utility model;

[0015] Figure 2 for Figure 1 A cross-sectional schematic diagram of a screen anti-blocking device shown;

[0016] Reference numerals:

[0017] The screen body 1, the filter hole 11, the sliding plate 2, the rotating assembly 3, the rotating rod 31, the gear 32, the dredging rod 4, the rack 5, the driving member 6, the connecting rope 7, the elastic rope 8, and the fixing sleeve 9. DETAILED DESCRIPTION

[0018] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0019] Please also read Figure 1 and Figure 2 , this embodiment provides a screen anti-blocking device, including a screen body 1, a sliding plate 2, a rotating assembly 3, a dredging rod 4, a rack 5 and a driving member 6;

[0020] The sliding plate 2 is slidably connected to the back of the screen body 1, the rotating component 3 is rotatably connected to the sliding plate 2, and the rack 5 is fixed on the back of the screen body 1. The sliding of the sliding plate 2 can drive the rotating component 3 to rotate through the rack 5; it should be understood that the front side of the screen body 1 is the feeding side, and the back side is the discharging side. The sliding plate 2 moves in a straight line, and its sliding direction is parallel to the rack 5. The sliding of the sliding plate 2 causes the rack 5 to squeeze the rotating component 3, thereby causing the rotating component 3 to rotate.

[0021] The screen body 1 is provided with a plurality of filter holes 11, and the rotating assembly 3 is provided with a plurality of dredging rods 4, which are flexible rods and can be inserted into the filter holes 11; it should be understood that the size of the dredging rods 4 corresponds to the filter holes 11, and is preferably a thin rod or a needle-shaped rod, and the dredging rods 4 are bent in the area outside the filter holes 11 by the extrusion of the screen body 1. During the sliding of the sliding plate 2, the dredging rods 4 rotate with the rotation of the rotating assembly 3, and then pass through and out of each filter hole 11 in turn. Preferably, the dredging rods 4 can be made of modified PP material.

[0022] The driving member 6 is arranged on the back of the screen body 1 and connected to the sliding plate 2. The driving member 6 can drive the sliding plate 2 to slide. Specifically, the driving member 6 can be a cylinder or the like.

[0023] In the present application, the sliding of the sliding plate 2 drives the rotating component 3 to slide and rotate during the sliding process, and the dredging rod 4 on the rotating component 3 slides and rotates therewith. Due to its own flexible characteristics, each dredging rod 4 is in an extruded state between each filter hole 11. When passing through the filter hole 11, it pushes into the filter hole 11 due to its own elasticity, and then dredges the filter hole 11, thereby achieving dredging of the filter hole 11 of the screen body 1 and avoiding blockage of the screen body 1.

[0024] In other embodiments, the filter hole 11 is a trumpet hole, and the end close to the rotating assembly 3 is larger than the end away from the rotating assembly 3. Thus, the dredging rod 4 is more convenient to insert into the filter hole 11.

[0025] In other embodiments, the rotating assembly 3 includes a rotating rod 31 and a gear 32; the rotating rod 31 is rotatably connected to the sliding plate 2, and the gear 32 is coaxially fixed to the rotating rod 31 and meshes with the rack 5. It should be understood that the gear 32 and the rack 5 correspond one to one, and the rack 5 can be provided on one side or both sides of the rotating rod.

[0026] In other embodiments, a fixing sleeve 9 is detachably and coaxially provided on the rotating rod 31, and the dredging rod 4 is fixed on the fixing sleeve 9. It should be understood that the fixing sleeve 9 can be detachably fixed on the rotating rod 31 by screws, limit rods, etc. Preferably, the fixing sleeve 9 is a flexible plate that can be connected into a ring.

[0027] In other solutions, the driving member 6 is a motor, which is connected to the sliding plate 2 via a connecting rope 7, and an elastic rope 8 is provided, one end of the elastic rope 8 is connected to the screen body 1, and the other end is connected to the sliding plate 2. By setting the driving member 6 as a motor, the bottom space can be saved.

[0028] The dredging rod 4 in the above-mentioned screen anti-blocking device can penetrate into the filter hole 11 back and forth to dredge the blocked filter hole 11.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A screen anti-blocking device, characterized in that: It includes a screen body, a sliding plate, a rotating assembly, a dredging rod, a rack and a driving member; The sliding plate is slidably connected to the back of the screen body, the rotating assembly is rotatably connected to the sliding plate, the rack is fixedly arranged on the back of the screen body, and the sliding of the sliding plate can drive the rotating assembly to rotate through the rack; The screen body is provided with a plurality of filtering holes, and the rotating assembly is provided with a plurality of dredging rods, wherein the dredging rods are flexible rods and can be inserted into the filtering holes; The driving member is arranged on the back side of the screen body and is connected to the sliding plate. The driving member can drive the sliding plate to slide.

2. A screen anti-blocking device according to claim 1, characterized in that: The filter hole is a trumpet hole, and the end close to the rotating component is larger than the end far from the rotating component.

3. A screen anti-blocking device according to claim 2, characterized in that: The rotating assembly comprises a rotating rod and a gear; the rotating rod is rotatably connected to the sliding plate, and the gear is coaxially fixed on the rotating rod and meshes with the rack.

4. A screen anti-blocking device according to claim 3, characterized in that: The rotating rod is also detachably and coaxially provided with a fixing sleeve, and the dredging rod is fixed on the fixing sleeve.

5. A screen anti-blocking device according to claim 4, characterized in that: The driving member is a motor, which is connected to the sliding plate through a connecting rope. An elastic rope is also provided, one end of which is connected to the screen body, and the other end is connected to the sliding plate.

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