CN109201463B

CN109201463B - vibrating screen

Info

Publication number: CN109201463B
Application number: CN201811097276.0A
Authority: CN
Inventors: 熊杨寿; 黄康; 翟华; 许锋炜
Original assignee: Hefei Polytechnic University
Current assignee: Hefei Polytechnic University
Priority date: 2018-09-17
Filing date: 2018-09-17
Publication date: 2019-12-13
Anticipated expiration: 2038-09-17
Also published as: CN109201463A

Abstract

The invention discloses a vibrating screen which comprises a screen body, a hasp, a mounting seat and a support, wherein the support is detachably mounted on an external fixing surface; the mounting seat is mounted on the bracket by using an elastic connection structure so as to make the mounting seat reciprocate when being subjected to an external regular vibration source; the screen body is slidably arranged in a channel formed in the top of the mounting seat, the mounting seat is slidably connected with the screen body through a hasp, the hasp comprises a connecting piece, a handle, a rotating shaft, a mounting block, a first spring and a locking nut, and the mounting block is fixedly arranged on the side surface of the mounting seat and is provided with a guide groove penetrating through the upper end surface and the lower end surface; the side surface of the handle is provided with a cavity, the mounting block is loosely accommodated in one end of the cavity, the end is provided with a bolt, and the bolt penetrates through the guide groove.

Description

vibrating screen

Technical Field

the invention relates to the technical field of vibrating devices, in particular to a vibrating screen.

Background

a conventional vibrating screen operates by utilizing reciprocating rotary vibration generated by vibrator excitation. The upper rotary heavy hammer of the vibrator makes the screen surface generate plane rotary vibration, the lower rotary heavy hammer makes the screen surface generate conical surface rotary vibration, and the combined effect makes the screen surface generate re-rotary vibration. The vibration locus is a complex space curve. The curve is projected as a circle in the horizontal plane and as an ellipse in the vertical plane. The amplitude can be changed by adjusting the exciting force of the upper and lower rotary weights. And the curve shape of the motion trail of the screen surface can be changed and the motion trail of the materials on the screen surface can be changed by adjusting the space phase angle of the upper and lower heavy hammers.

the shale shaker needs to carry out different improvements in different occasions, when coal in the pit was screened, need make unilateral reciprocating motion to the colliery that just mined out, keeps the screen frame to make reciprocating motion along a straight line promptly to reach the purpose of screening, the shale shaker after long-time the use, the damage appears easily, in the coal industry, accelerate the maintenance and the installation process of shale shaker and be one of the key problem that improves the screening process.

Disclosure of Invention

technical problem to be solved

Aiming at the defects of the prior art, the invention provides the vibrating screen which is more convenient to install and more convenient and accurate to measure.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a vibrating screen comprises a screen body, a hasp, a mounting seat and a support, wherein the support is detachably mounted on an external fixing surface; the mounting seat is mounted on the bracket by using an elastic connection structure so as to make the mounting seat reciprocate when being subjected to an external regular vibration source; the screen frame slidable install in the channel that the mount pad top was seted up, the mount pad utilize the hasp with screen frame slidable connects, the hasp includes connecting piece, handle, pivot, installation piece, spring one and lock nut, wherein:

the mounting block is fixedly mounted on the side surface of the mounting seat and is provided with a guide groove penetrating through the upper end surface and the lower end surface;

A cavity is formed in the side face of the handle, the mounting block is loosely accommodated in one end of the cavity, a bolt is arranged at the end, and the bolt penetrates through the guide groove;

the rotating shaft is rotatably arranged in the middle of the cavity and provided with a first sliding hole penetrating through the side surface;

the connecting piece is loosely held in the cavity, the connecting piece comprises a hook-shaped connecting end, a connecting section, a polished rod section and a thread section, the polished rod section is a straight rod with equal thickness and is fixedly connected with the connecting section at least at an included angle of 110 degrees, the polished rod section is slidably mounted in the first sliding hole, the hook-shaped connecting end is located at the other end of the connecting section, the hook-shaped connecting end penetrates through a sliding groove formed in the mounting seat and is clamped in a connecting hole formed in the screen body, the connecting hole is in interference fit with the hook-shaped connecting end, the connecting section penetrates through the sliding groove and can slide along the length direction of the sliding groove, the spring is sleeved on the thread section, the front end of the spring can be detachably abutted against the rotating shaft, and the position of the rear end of the spring is limited by a locking nut screwed on the.

furthermore, the elastic connection structure comprises an upper seat body, a lower seat body, a second spring, a screw rod, a locking structure and a limit nut, the upper seat body is detachably mounted at the corner of the mounting seat, the lower seat body is detachably mounted on the bracket and is positioned under the upper seat body, the tops of the upper seat body and the lower seat body are respectively provided with a second sliding hole, the upper seat body and the lower seat body are respectively provided with a sliding cavity communicated with the second sliding hole, two ends of the screw rod are respectively penetrated into the two second sliding holes, and two ends of the screw rod are respectively accommodated in the sliding cavities in a vertically sliding manner, the diameter of the second sliding hole is larger than that of the screw rod, the locking structure is detachably mounted at the upper part of the screw rod and used for limiting the displacement of the screw rod in the second sliding hole of the upper seat body, the limit nut is screwed in the middle part of the screw rod, and the spring is sleeved at the lower part of the screw, and two ends of the second spring are respectively abutted against the lower end face of the limiting nut and the upper end face of the lower seat body.

Preferably, the upper seat body and the lower seat body are both provided with openings, and the openings are communicated with the sliding cavity.

Preferably, the locking structure is composed of two nuts with outer diameters larger than the aperture of the second sliding hole, the two nuts are screwed on the screw rod and are respectively located at the upper end and the lower end of the second sliding hole of the upper base body, and the nut located at the upper end is loosely accommodated in the sliding cavity.

Preferably, the elastic connection structure is further provided with a positioning structure for limiting the position of the second spring, the positioning structure is composed of two annular bases, the two annular bases are fixedly installed on the upper end face of the lower base body and the lower end face of the limiting nut respectively, annular grooves are formed in the two annular bases, and two end portions of the second spring are clamped in the annular grooves respectively.

Further, still be provided with the amplitude indicator on the mount pad, the amplitude indicator includes the bottom plate and sets up isosceles triangle profile on the bottom plate is constituteed, the isosceles triangle profile is invertd and the vibration direction of central line perpendicular screen frame, the bottom plate openly still is provided with perpendicular to central line and the scale identification line that links to each other with two striae of isosceles triangle profile.

(III) advantageous effects

The invention has the following beneficial effects:

The hasp structure is used, the sliding connection of the screen body and the mounting seat is realized, the mounting seat is in sliding fit with the screen body, the hasp comprises a connecting piece, a handle, a rotating shaft, a mounting block, a spring I and a locking nut, after the screen body is hooked by the connecting piece, the end part of the adjusting handle is positioned in the guide groove, the handle is rotated, the position of the locking nut is adjusted afterwards, the angle between the handle and the mounting block is finely adjusted, the bolt is screwed finally, the purpose of controlling and positioning the handle is achieved, meanwhile, when the connecting piece does reciprocating motion along with the screen body, the spring plays a role of buffering, and the distance between the locking nut and the rotating shaft is the maximum stroke of the screen body.

drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a front view of the elastic attachment structure of the present invention;

FIG. 3 is a cross-sectional view of the elastic attachment structure of the present invention;

FIG. 4 is a schematic view of the screen of the present invention mounted on a mounting block;

FIG. 5 is a schematic view of the buckle of the present invention as it is released;

FIG. 6 is a schematic view of the present invention when the fastener is fastened;

FIG. 7 is a top view of the present invention when the fastener is fastened;

FIG. 8 is a schematic view of a handle according to the present invention;

FIG. 9 is a schematic view of a connector of the present invention;

FIG. 10 is a schematic view of a mounting block of the present invention;

FIG. 11 is a schematic view of a spindle according to the present invention;

FIG. 12 is a schematic view of an amplitude indicator of the present invention mounted on a mounting block;

FIG. 13 is a front view of the amplitude indicator of the present invention;

FIG. 14 is a schematic view of the relative positions of the indicating section and the isosceles triangular slot waist edge when the present invention is not vibrated;

FIG. 15 is a schematic view of the relative position of the indicating section and the waist edge of the isosceles triangular slot when the amplitude is 2 mm;

fig. 16 is a schematic diagram of the relative position of the indicating section and the waist edge of the isosceles triangular groove when the amplitude is 2.5 mm;

FIG. 17 is a schematic view of the relative position of the indicating section and the waist edge of the isosceles triangular slot when the amplitude of the signal is 5 mm;

fig. 18 is a schematic diagram of the relative position of the indicating section and the waist edge of the isosceles triangular groove when the amplitude of the signal is 10 mm.

In the figure: a screen body-1, a mounting seat-2, a bracket-3, an elastic connecting structure-4, a hasp-5, an amplitude indicator-6, a connecting hole-10, a channel-20, a chute-21, a connecting piece-50, a handle-51, a rotating shaft-52, a mounting block-53, a spring-54, a locking nut-55, a cavity-510, a bolt-511, a guide groove-530, a slide hole-520, a hook-shaped connecting end-500, a connecting section-501, a polish rod section-502, a thread section-503, an upper seat body-40, a lower seat body-41, a spring-42, a screw-43, a locking structure-44, a limiting nut-45, a slide hole-46, a slide cavity-47, an opening-48, an annular base-49, a vibration amplitude indicator-6, Nut-440, annular groove-490, bottom plate-60, isosceles triangle outline-61, scale identification line-62.

Detailed Description

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 4-11, the present invention provides a technical solution: a vibrating screen comprises a screen body 1, a hasp 5, a mounting seat 2 and a support 3, wherein the support 3 is detachably mounted on an external fixing surface; the mounting seat 2 is mounted on the bracket 3 by using an elastic connecting structure 4, so that the mounting seat 2 does reciprocating motion when being subjected to an external regular vibration source; the screen body 1 is slidably mounted in a channel 20 formed in the top of the mounting seat 2, the mounting seat 2 is slidably connected with the screen body 1 by using a hasp 5, the hasp 5 comprises a connecting piece 50, a handle 51, a rotating shaft 52, a mounting block 53, a first spring 54 and a lock nut 55, wherein:

The mounting block 53 is fixedly mounted on the side surface of the mounting base 2 and is provided with a guide groove 530 penetrating through the upper and lower end surfaces;

The side of the handle 51 is provided with a cavity 510, the mounting block 53 is loosely accommodated in one end of the cavity 510, and the end is provided with a bolt 511, the bolt 511 is inserted into the guide slot 530, it is pointed out that the bolt 511 can be used as a direction member to enable the handle 51 to move along the guide slot 530, meanwhile, the handle 51 can also rotate by taking the bolt 511 as a fulcrum, and when the bolt 511 is locked, the handle 51 is limited to slide in the guide slot 530 and rotate the handle 51;

The rotating shaft 52 is rotatably arranged in the middle of the cavity 510, and the rotating shaft 52 is provided with a first sliding hole 520 penetrating through the side surface;

The connecting element 50 is loosely accommodated in the cavity 510, the connecting element 50 includes a hook-shaped connecting end 500, a connecting section 501, a polished rod section 502 and a threaded section 503, the polished rod section is a straight rod with the same thickness as 502 and is fixedly connected with the connecting section 501 at an included angle of at least 110 degrees, the polished rod section 502 is slidably installed in a first slide hole 520, the hook-shaped connecting end 500 is located at the other end of the connecting section 501, the hook-shaped connecting end 500 passes through a sliding groove 21 formed on the mounting base 2 and is clamped in a connecting hole 10 formed on the screen body 1, the connecting hole 10 is in interference fit with the hook-shaped connecting end 500, further, when the hook-shaped connecting end 500 is clamped in the connecting hole 10, the front end of the hook-shaped connecting end 500 entering the screen body 1 can be designed into an arc shape to reinforce the connection between the hook-shaped connecting end 500 and the first slide hole 520, the connecting section 501 passes through the sliding groove 21 and can slide, only the groove structure is used for the connection section 501 to pass through, the connection section 501 and the edge of the sliding groove are parallel and do not interfere, the first spring 54 is sleeved on the thread section 503, the front end can be detachably abutted against the rotating shaft 52, and the position of the rear end of the first spring 54 is limited by using the lock nut 55 screwed on the threaded section 503, and it is worth pointing out that the first spring 54 is not only sleeved on the threaded section 503, and also fits over polished rod segment 502, while locknut 55 limits the length of first spring 54 in threaded segment 503, i.e., reduces the position of first spring 54 on threaded segment 503, i.e., reduces the travel of connector 50, when the screwing amount of the locking nut 55 is small enough, the threaded section 503 may also slide into the sliding hole one 520, so as to achieve the purpose of increasing the stroke of the connecting member 50, i.e. the purpose of controlling the sliding distance of the screen body 1 relative to the mounting base 2.

Referring to fig. 2-3, the elastic connection structure 4 includes an upper seat 40, a lower seat 41, a second spring 42, a screw 43, a locking structure 44 and a limit nut 45, the upper seat 40 is detachably mounted at a corner of the mounting seat 2, preferably, the upper seat 40 should be symmetrically distributed in an array, the lower seat 41 is detachably mounted on the bracket 3, the lower seat 41 is located right below the upper seat 40, the top of the upper seat 40 and the top of the lower seat 41 are both provided with a second sliding hole 46, the upper seat 40 and the lower seat 41 are both provided with a sliding cavity 47 communicated with the second sliding hole 46, two ends of the screw 43 are respectively inserted into the two sliding holes 46, and two ends of the screw are respectively accommodated in the sliding cavity 47 in a vertically slidable manner, the diameter of the second sliding hole 46 is larger than that of the screw 43, the locking structure 44 is detachably mounted at the upper portion of the screw 43 for limiting the displacement of the screw 43 in the second sliding hole of the upper seat 40, the limit nut 45 is screwed in the middle of the screw 43, the second spring 42 is sleeved on the lower portion of the screw 43, and two ends of the second spring 42 respectively abut against the lower end face of the limit nut 45 and the upper end face of the lower seat body 41.

It is simple but worth pointing out that the slide chamber 47 needs to leave enough space to satisfy the requirement of the screw 43 extending and retracting in the slide chamber 47, and the width and length of the bottom area are required to satisfy the requirement of the locking structure 44. Meanwhile, the locking structure 44 limits the displacement of the screw 43 in the vertical direction and the horizontal direction in the sliding cavity 47 of the screw 43 when the lock is locked, and limits the displacement of the screw 43 in the vertical direction when the lock is not locked, but can adjust the position of the screw relative to the sliding hole two 46 to realize the position adjustment of the mounting seat 2 in the horizontal plane.

Preferably, the upper housing 40 and the lower housing 41 are each provided with an opening 48, the opening 48 and the sliding cavity 47, the opening facilitating the operation of the screw 43 and the locking structure 44.

Preferably, the locking structure 44 is composed of two nuts 440 with an outer diameter larger than the diameter of the second sliding hole 46, the two nuts 440 are both screwed on the screw 43 and respectively located at the upper end and the lower end of the second sliding hole 46 of the upper seat body 40, the nut 440 located at the upper end is loosely accommodated in the sliding cavity 47, the nut 440 can be easily rotated through the opening 48 to achieve the purpose of controlling the screw 43, and generally, the nut 440 located at the lower end of the first sliding hole 520 is not rotated to ensure that the vertical height of the screw 43 in the upper seat body 40 is not changed.

preferably, the elastic connection structure 4 is further provided with a positioning structure for limiting the horizontal position of the second spring 42, the positioning structure is composed of two annular bases 49, the two annular bases 49 are respectively and fixedly installed on the upper end face of the lower base body 41 and the lower end face of the limiting nut 45, annular grooves 490 are respectively formed in the two annular bases 49, and two end portions of the second spring 42 are respectively clamped in the annular grooves 490.

Referring to fig. 12-18, the mounting base 2 is further provided with an amplitude indicator 6, the amplitude indicator 6 includes a bottom plate 60 and an isosceles triangle profile 61 disposed on the bottom plate, the isosceles triangle profile 61 is inverted, a central line of the isosceles triangle profile 61 is perpendicular to a vibration direction of the screen body 1, a scale identification line 62 perpendicular to the central line and connected to two waist lines of the isosceles triangle profile 61 is further disposed on a front surface of the bottom plate 60, it is necessary to point out that when the amplitude indicator 6 detects an amplitude of a vibrating object, the amplitude indicator 6 only needs to be mounted on the vibrating object, and the vibration direction of the vibrating object is perpendicular to the central line of the isosceles triangle profile 61.

The isosceles triangle contour 61 will generate a lot of afterimages when vibrating, and the size of the vibration amplitude can be known by the position of the scale identification line 62 where the point where the innermost waist lines of these afterimages intersect.

it should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. a vibrating screen is characterized in that: the screen comprises a screen body, a hasp, a mounting seat and a support, wherein the support is detachably mounted on an external fixing surface; the mounting seat is mounted on the bracket by using an elastic connection structure so as to make the mounting seat reciprocate when being subjected to an external regular vibration source; the screen frame slidable install in the channel that the mount pad top was seted up, the mount pad utilize the hasp with screen frame slidable connects, the hasp includes connecting piece, handle, pivot, installation piece, spring one and lock nut, wherein:

the connecting piece is loosely held in the cavity, the connecting piece comprises a hook-shaped connecting end, a connecting section, a polished rod section and a thread section, the polished rod section is a straight rod with equal thickness and is fixedly connected with the connecting section at least at an included angle of 110 degrees, the polished rod section is slidably mounted in the first sliding hole, the hook-shaped connecting end is located at the other end of the connecting section, the hook-shaped connecting end penetrates through a sliding groove formed in the mounting seat and is clamped in a connecting hole formed in the screen body, the connecting hole is in interference fit with the hook-shaped connecting end, the connecting section penetrates through the sliding groove and can slide along the length direction of the sliding groove, the spring is sleeved on the thread section, the front end of the spring can be detachably abutted against the rotating shaft, and the position of the rear end of the spring is limited by a locking nut screwed on.

2. A vibratory screen as set forth in claim 1 wherein: the elastic connection structure comprises an upper seat body, a lower seat body, a spring II, a screw rod, a locking structure and a limiting nut, the upper seat body is detachably mounted at the corner of the mounting seat, the lower seat body is detachably mounted on the support, the lower seat body is positioned under the upper seat body, the tops of the upper seat body and the lower seat body are respectively provided with a sliding hole II, the upper seat body and the lower seat body are respectively provided with a sliding cavity communicated with the sliding hole II, two ends of the screw rod are respectively penetrated in the two sliding holes II, two end parts of the screw rod are respectively accommodated in the sliding cavities in a vertically sliding manner, the diameter of the sliding hole II is larger than that of the screw rod, the locking structure is detachably mounted at the upper part of the screw rod and used for limiting the displacement of the screw rod in the sliding hole II of the upper seat body, the limiting nut is screwed in the middle part of the screw rod, and the spring is sleeved at, and two ends of the second spring are respectively abutted against the lower end face of the limiting nut and the upper end face of the lower seat body.

3. A vibratory screen as set forth in claim 2 wherein: the upper seat body and the lower seat body are both provided with openings which are communicated with the sliding cavity.

4. a vibratory screen as set forth in claim 2 wherein: the locking structure is composed of two nuts with the outer diameter larger than the aperture of the second sliding hole, the two nuts are screwed on the screw rod and are respectively positioned at the upper end and the lower end of the second sliding hole of the upper base body, and the nut positioned at the upper end is loosely accommodated in the sliding cavity.

5. A vibratory screen as set forth in claim 2 wherein: the elastic connection structure is further provided with a positioning structure for limiting the position of the second spring, the positioning structure is composed of two annular bases, the two annular bases are fixedly installed on the upper end face of the lower base body and the lower end face of the limiting nut respectively, annular grooves are formed in the two annular bases, and the two end portions of the second spring are clamped in the annular grooves respectively.

6. a vibratory screen as set forth in claim 1 wherein: still be provided with the amplitude indicator on the mount pad, the amplitude indicator includes the bottom plate and sets up isosceles triangle profile on the bottom plate constitutes, the vibration direction of isosceles triangle profile inversion and the perpendicular screen frame of central line, the bottom plate openly still is provided with the scale identification line that perpendicular to central line and two striae link to each other with the isosceles triangle profile.