CN201020445Y

CN201020445Y - Eccentric oscillating screen

Info

Publication number: CN201020445Y
Application number: CNU2007201009742U
Authority: CN
Inventors: 张志飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-05
Filing date: 2007-04-05
Publication date: 2008-02-13
Anticipated expiration: 2017-04-05

Abstract

The utility model relates to a screening device in the screening mechanical field, in particular to an eccentric vibrating screen, and solves the current problems in the structure of the vibrating screen. A vibrating support is fixed around the body, a screw rod is positioned in the vibrating support, a pressure spring is sleeved on the screw rod, and a lateral bracing rod is fixed at the lower end of the screw rod behind the body. The utility model also comprises a bracing base frame, and back moving springs are respectively positioned around the bracing base frame and fixed with the body. The screen frame and the bracing base frame are fixed as an integral part. The screen frame comprises a mesh screen stagewise distributed at an end. Both sides of the mesh screen are respectively fixed between two layers of laminated sheets, and a material outlet is respectively arranged below each layer of the mesh screen. The screen frame of the utility model is hung on the body through a braced structure and can regulate the tilt angle of the whole screen frame through the screw rod, the pressure spring and other regulating devices. The screen frame is of a split type and the quantity of the mesh screen can be increased at random as per the customer requirement, so that the device has the advantages of small floor space, compact and simple structure, reasonable design and convenient maintenance.

Description

Eccentric vibrating screen

Technical field

The utility model relates to the screening plant in sieving machine field, is specially good, the easy to maintenance eccentric vibrating screen of a kind of screenability.

Background technology

Vibratory sieve is to drive a kind of plant equipment that screen box carries out screening operation by vibrator.At present, building stones, ore are being carried out in the assorting room, extensive use be vibratory sieve, this vibratory sieve mainly is by frame, be fixed on screen box, motor, the eccentric wheel on the frame and be fixed in the interior compositions such as screen cloth of screen box, driven by motor eccentric wheel rotation, eccentric wheel drive screen box and screen cloth vibration by shackle rod etc. again, thereby according to the size of building stones or ore it are separated into different grades.But existing most of vibratory sieves are the following defective of ubiquity in use: 1, screen box and frame are fixed, and cause the angle of inclination that can not regulate screen box in the assorting room according to actual needs; 2, screen cloth is fixed in the screen box, be overall structure with screen box, this structure is given in actual use and is changed and maintenance has caused great inconvenience, and the maintenance personal need crawl into and keep in repair in the casing and to the operation that changes of screen cloth, thereby cause long-time parking, influence ordinary production; 3, screen cloth negligible amounts when if desired the building stones of multiple different-grain diameter being separated, does not then reach requirement; 4, the discharging opening of most of vibratory sieves is positioned at frame the place ahead, makes that the entire equipment floor space is bigger.

Summary of the invention

There is the problem on the said structure in the utility model and provides a kind of screenability good, easy to maintenance eccentric vibrating screen in order to solve existing vibratory sieve.

The utility model is to adopt following technical scheme to realize: eccentric vibrating screen, comprise frame, screen frame and vibrating device, be fixed with vibration rack around the frame respectively, run through in the vibration rack screw rod is set, be with holddown spring on the screw rod, bolt clamping on holddown spring upper end and the screw rod, the upper surface clamping of lower end and vibration rack is fixed with transverse support bar between the screw rod lower end at frame rear; This vibratory sieve also comprises the support underframe that hangs on the frame top, around supporting underframe back-moving spring is set respectively, the other end and the frame of back-moving spring are fixed, and support the screw rod in both sides, underframe the place ahead and frame the place ahead and fix, and the transverse support bar that supports on underframe rear and the frame is fixed; Described screen frame is fixed as one with the support underframe and is skewed, screen frame comprises the screen cloth of at least two and the stepped distribution of an end face, the gap size of each screen cloth reduces from top to bottom gradually, the screen cloth both sides are separately fixed between two laminates, adjacent pressing plates is fixed by locating piece, the below of every layer of screen cloth is respectively equipped with discharging opening, and discharging opening is fixed on the frame below.

Screen cloth described in the utility model is formed by braided steel wire, and the gap size of screen cloth can require to determine according to the appearance and size and the sorting of building stones or ore.Screen frame described in the utility model is split type, and promptly each layer screen cloth both sides are separately fixed between two laminates, and adjacent pressing plates is fixed by locating piece, when screen cloth is changed or keeps in repair, only needs two laminates are opened, and screen cloth is extracted out get final product; Described screen frame is fixed in and supports on the underframe, support underframe and hang on the frame top by the back-moving spring around it, be positioned at around the frame and and can play a supporting role supporting underframe and screen frame with the vibration rack that the support underframe is fixed, by regulating screw rod and the holddown spring in the vibration rack, make this equipment can regulate the angle of inclination of whole screen frame simultaneously according to actual sorting requirement.During work, the Vibration on Start-up device, pour building stones into topmost one deck screen cloth, under the driving of vibrating device, whole screen frame begins vibrations, utilizes the difference of the gap size of each layer screen cloth that building stones are divided into different brackets, wherein the building stones of maximum particle diameter are by the end landing of the top one deck screen cloth, the building stones of minimum grain size fall into discharging opening after passing bottom one deck screen cloth, and the building stones of all the other grades are fallen by the discharging opening of other corresponding screen cloth belows, thereby reach the purpose of classification.

Both sides, described support underframe the place ahead are provided with hook, and the screw rod lower end in frame the place ahead is hook solid, support underframe by hook and the socket of screw rod lower end, and this kind connected mode can be convenient to support the dismounting of underframe and frame.

Described screen frame both sides are provided with the rectangular fastening bolt that is used for fixing each screen cloth, be fixed with horizontal stiffener on being positioned at screen frame both sides and mutual corresponding rectangular fastening bolt, each screen cloth tightly can be fixed together, avoid loosening between each screen cloth in the vibrations process.

Owing to consider the complexity of structure and to the requirement of stone classification, described screen frame comprises four screen clothes that are arranged in order from top to bottom, wherein topmost the end of one deck screen cloth is the one-level discharging opening, and secondly the discharging opening of each screen cloth below is followed successively by secondary discharge port, three grades of discharging openings, level Four discharging opening, Pyatyi discharging opening from top to bottom.

For the ease of the maintenance personal screen frame is keeped in repair, changes, also be fixed with column on the described frame, the column upper end is provided with the rotational slide suspension bracket, and described rotational slide suspension bracket is existing known products, and its structure and using method are that those of ordinary skill in the art knows.

Described vibrating device can adopt various ways, the utility model vibrating device comprises the power transmission shaft that traverses in supporting the underframe below, power transmission shaft is connected with the bearing block that is fixed on support underframe below, eccentric wheel is equipped with at the power transmission shaft two ends, belt pulley is equipped with in the eccentric wheel outside, and belt pulley is connected by the output shaft of belt with the motor that is fixed on the frame bottom.

Compared with prior art, the utlity model has following advantage:

1, screen frame hangs on the frame by supporting construction, by the angle of inclination of adjusting device tunable integer screen frames such as screw rod, holddown spring, to satisfy production requirement;

2, screen frame is split type, and is fixed with the rotational slide suspension bracket on the frame, is convenient to the maintenance of screen cloth and changes;

3, the quantity of screen cloth can arbitrarily increase according to user's demand, can with building stones, ore sorting thoroughly, batch mixing not;

4, discharging opening is fixed in frame below, and floor space is less, makes the entire equipment compact conformation,

In a word, the utility model is simple in structure, reasonable in design, easy to maintenance, can be widely used in the sieving machine field.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is the left view of Fig. 1

Among the figure: 1-frame 2-screen frame 3-vibration rack 4-screw rod 5-holddown spring 6-bolt 7-transverse support bar 8-supports the horizontal stiffener 15 of the underframe 9-back-moving spring 10-pressing plate 11-locating piece 12-hook rectangular fastening bolt 14-of 13-, 16,17, three grades of discharging opening 28-of 18-screen cloth 19-column 20-power transmission shaft 21-eccentric wheel 22-belt pulley 23-belt 24-motor 25-one-level discharging opening 26-secondary discharge port 27-level Four discharging opening 29-Pyatyi discharging opening 30-bearing block

The specific embodiment

Eccentric vibrating screen, comprise frame 1, screen frame 2 and vibrating device, vibrating device comprises the power transmission shaft 20 that traverses in supporting underframe 8 belows, power transmission shaft 20 is connected with the bearing block 30 that is fixed on support underframe 8 belows, eccentric wheel 21 is equipped with at power transmission shaft 20 two ends, belt pulley 22 is equipped with in eccentric wheel 21 outsides, belt pulley 22 is connected by the output shaft of belt 23 with the motor 24 that is fixed on frame 1 bottom, also be fixed with column 19 on the frame 1, column 19 upper ends are provided with the rotational slide suspension bracket, be fixed with vibration rack 3 respectively around the frame 1, vibration rack 3 can be made one with frame 1, runs through in the vibration rack 3 screw rod 4 is set, be with holddown spring 5 on the screw rod 4, bolt 6 clampings on holddown spring 5 upper ends and the screw rod 4, the upper surface clamping of lower end and vibration rack 3 is fixed with transverse support bar 7 between the screw rod lower end at frame 1 rear; This vibratory sieve also comprises the support underframe 8 that hangs on frame 1 top, around supporting underframe 8 back-moving spring 9 is set respectively, the other end of back-moving spring 9 and frame 1 are fixing, support both sides, underframe 8 the place ahead hook 12 is set, the screw rod lower end in frame 1 the place ahead is hook solid, support underframe 8 by hook 12 and the socket of screw rod lower end, the transverse support bar 7 that supports on underframe 8 rears and the frame 1 is fixing; Described screen frame 2 is fixed as one with support underframe 8 and is skewed, screen frame 2 comprises four screen clothes that are arranged in order from top to bottom 15,16,17,18, and the stepped distribution of an end face, the gap size of each screen cloth reduces from top to bottom gradually, the screen cloth both sides are separately fixed between two laminates 10, adjacent pressing plates is fixing by locating piece 11, screen frame 2 both sides are provided with the rectangular fastening bolt 13 that is used for fixing each screen cloth, rectangular fastening bolt 13 upper ends that are positioned at screen frame both sides and mutual correspondence are fixed with horizontal stiffener 14, screen cloth 15,16,17,18 belows are respectively equipped with secondary discharge port 26, three grades of discharging openings 27, level Four discharging opening 28 and Pyatyi discharging opening 29, screen cloth 15 ends are one-level discharging opening 25, and discharging opening all is fixed on frame 1 below.

During work, starter motor, motor passes to eccentric wheel by belt and belt pulley successively with power, power transmission shaft, bearing block, afterwards drive and support underframe and the vibrations of whole screen frame, pour building stones or ore into topmost one deck screen cloth this moment, vibrations along with whole screen frame, wherein the building stones of maximum particle diameter are by the one-level discharging opening landing of one deck screen cloth 15 ends, the top, the building stones of minimum grain size pass screen cloth 15,16,17,18, fall by Pyatyi discharging opening 29, building stones greater than the gap of screen cloth 16 are fallen by secondary discharge port 26 particle diameter less than the gap of screen cloth 15, building stones greater than the gap of screen cloth 17 are fallen by three grades of discharging openings 27 particle diameter less than the gap of screen cloth 16, building stones greater than the gap of screen cloth 18 are fallen by level Four discharging opening 28 particle diameter less than the gap of screen cloth 17, thus, building stones are divided into five grades from big to small, and classification is even, thoroughly.In said process, can be by the bolt on the screw rod around the adjusting frame, to adjust the angle of inclination of whole screen frame.

Claims

1. eccentric vibrating screen, comprise frame (1), screen frame (2) and vibrating device, it is characterized in that: frame (1) is fixed with vibration rack (3) all around respectively, run through in the vibration rack (3) screw rod (4) is set, be with holddown spring (5) on the screw rod (4), bolt (6) clamping on holddown spring (5) upper end and the screw rod (4), the upper surface clamping of lower end and vibration rack (3) is positioned between the screw rod lower end at frame (1) rear and is fixed with transverse support bar (7); This vibratory sieve also comprises the support underframe (8) that hangs on frame (1) top, support underframe (8) back-moving spring (9) is set respectively all around, the other end of back-moving spring (9) and frame (1) are fixing, support the screw rod in underframe (8) both sides, the place ahead and frame (1) the place ahead and fix, the transverse support bar (7) that supports on underframe (8) rear and the frame (1) is fixing; Described screen frame (2) is fixed as one with support underframe (8) and is skewed, screen frame (2) comprises the screen cloth of at least two and the stepped distribution of an end face, the gap size of each screen cloth reduces from top to bottom gradually, the screen cloth both sides are separately fixed between two laminates (10), adjacent pressing plates is fixing by locating piece (11), the below of every layer of screen cloth is respectively equipped with discharging opening, and discharging opening is fixed on frame (1) below.

2. eccentric vibrating screen according to claim 1 is characterized in that supporting underframe (8) both sides, the place ahead hook (12) is set, and the screw rod lower end in frame (1) the place ahead is hook solid, supports underframe (8) by hook (12) and the socket of screw rod lower end.

3. eccentric vibrating screen according to claim 1 and 2, it is characterized in that screen frame (2) both sides are provided with the rectangular fastening bolt (13) that is used for fixing each screen cloth, rectangular fastening bolt (13) upper end that is positioned at screen frame both sides and mutual correspondence is fixed with horizontal stiffener (14).

4. eccentric vibrating screen according to claim 1 and 2 is characterized in that described screen frame (2) comprises four screen clothes that are arranged in order from top to bottom (15,16,17,18).

5. eccentric vibrating screen according to claim 1 and 2 is characterized in that also being fixed with on the frame (1) column (19), and column (19) upper end is provided with the rotational slide suspension bracket.

6. eccentric vibrating screen according to claim 1 and 2, it is characterized in that described vibrating device comprises the power transmission shaft (20) that traverses in supporting underframe (8) below, power transmission shaft (20) is connected with the bearing block (30) that is fixed on support underframe (8) below, eccentric wheel (21) is equipped with at power transmission shaft (20) two ends, belt pulley (22) is equipped with in eccentric wheel (21) outside, and belt pulley (22) is connected by the output shaft of belt (23) with the motor (24) that is fixed on frame (1) bottom.