CN201752696U

CN201752696U - Trapezoid sieve

Info

Publication number: CN201752696U
Application number: CN2010201665334U
Authority: CN
Inventors: 穆磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-12
Filing date: 2010-04-12
Publication date: 2011-03-02
Anticipated expiration: 2020-04-12

Abstract

The utility model discloses a trapezoid sieve which belongs to a vibrating sieve and comprises a machine frame, a sieve plate arranged on the machine frame, vibration exciters, a protection baffle and a spring seat, and further comprises a base, coal baffles and a spring seat arranged on the base. The trapezoid sieve is characterized in that: a machine frame main body is ladder-shaped; the spring seat is arranged under the machine frame which is connected on the base through a spring; the vibration exciters are arranged at the outer side faces of cross beams at the two sides of the machine frame along the coal sieving and flowing direction; the sieve plate is arranged on the machine frame; and the large coal baffles at the two sides are arranged on the base and are not connected with the machine frame and a vibrating system. The trapezoid sieve has the beneficial effects of adopting simple and compact structure, saving time and labor in assembling and disassembling, being convenient for maintenance, being light in weight, causing low energy consumption, achieving high efficiency, having long service life, and being suitable for large-scale production.

Description

Trapezoidal sieve

Technical field

The utility model relates to a kind of coal separation vibratory sieve, specifically is a kind of trapezoidal sieve, is specially adapted to that coal industry is extensive, mechanization, series classification operation uses.

Background technology

At present, domestic seat formula linear vibrating screen is made up of parts such as frame, sieve plate, excitation system, motor, bases.Frame mainly surplus two irregular big side plates and ten tie-beam etc. connect to form by high-strength bolt or ring-grooved rivet, sieve plate is in the frame the inside, spring base is welded on the frame outside, base is fixed on the ground, welds spring base above.Connect with shock-absorbing spring between the two-part spring base.Four vibrators symmetry in twos are placed on the side plate, are connected by power transmission shaft between the vibrator, and wherein two of a side vibrators link to each other with motor by tyre coupling, and two motors adopt synchronous incorgruous rotation mode to rotate.There is subordinate's drawback: A in the linear vibrating screen of said structure, a side side plate that links to each other with motor is carried out force analysis: under the situation of only considering exciting force, in one-period, the a certain moment two vibrator can produce first power to relative and opposing power, so side plate can be subjected to the situation of pressurized and tension in one-period.Because motor per minute rotating speed is thousands of approximately inferior, side plate is pressurized and tension frequently, and the easy like this side plate that causes ruptures near the middle normal of the line of relative, back strength, causes the accident.Opposite side comes to the same thing.B, vibrator and side sheet room quality of fit height, it is also very numerous and diverse to connect operation, is that assembling or the dismounting of damage back are all wasted time and energy very much.And after equipment work a period of time, parts can wear and tear, be out of shape, and do not reach the cooperation requirement, can cause the total quality of equipment to descend like this, influence its screening effect.C, after sieve maximizes, the power transmission shaft that vibrator is connected with motor also can change thereupon, length increases, the diameter change causes quality to heighten greatly.Must adopt powerful driven by motor like this.The motor frame becomes big like this, and it is big that power-off protection becomes, and it is big that headspace becomes, and its direct result of heavy-duty motor just has cost to increase in addition.Also can cause the unnecessary loss of the energy.D, the volume of linear vibrating screen own are big, and the complete machine quality is very big like this, will be weakened in the middle of the effect that vibrator produces is invisible, waste energy.E, be prone to screen cloth during than wet stock in screening and stop up.

Summary of the invention

Shake in order to overcome linear vibrating screen side plate fracture, mounting or dismounting inconvenience, ginseng that mechanism is heavy, attached parts cost heightens, is prone to the defective that screen cloth stops up during than wet stock in screening when maximizing, the utility model provides a kind of trapezoidal sieve, can solve the side plate phenomenon of rupture and mounting or dismounting are convenient, invalid mass of vibration is little, the screening efficiency height, screen cloth is difficult for stopping up, maximize to make produce the time, powers of motor etc. also can be constant, is convenient to modularized design and use.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of trapezoidal sieve, comprise frame, rack-mounted sieve plate, vibrator and spring base, also comprise base, the big spillplate of both sides is characterized in that: frame is the ladder-shaped that is connected to form by girder steel; Spring base be installed on frame lower surface and the base with frame on the corresponding position of spring base, frame is connected on the base by shock-absorbing spring; Vibrator is installed on the lateral surface of crossbeam of frame both sides along the screen direction that divide to flow; Sieve plate be installed in frame above; The big spillplate of both sides is installed on the base and is not connected with frame and vibrational system; Screen divides the outside of the direction that flows that protective baffle plate also is installed on frame, and protective baffle plate is flexible coupling with big spillplate.

Owing to adopted said structure, join the ratio that shakes with original same treatment ability linear vibrating screen, frame weight saving, energy consumption is little.Simultaneously, vibrator number, power of motor etc. also reduce to some extent.Be not prone to phenomenons such as fracture.Mechanism is simply compact, and mounting or dismounting are convenient, and are reasonable more economically.

The beneficial effects of the utility model are, and are simple and compact for structure, install and remove time saving and energy saving, easy to maintenance, in light weight, energy consumption is little, efficient is high, the life-span is long, can maximize to make and use.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the front view of first embodiment in the utility model;

Fig. 2 is a frame plan of installing vibrator.

Fig. 3 is the front view of the another embodiment of the utility model.

Among the figure: 1. frame, 2. vibrator, 3. protective baffle plate, 3-1, discharging swash plate, 3-2, little side plate, 4. sieve plate, 5. big spillplate, 6. spring base, 7. shock-absorbing spring, 8. base, mechanism 9. is flexible coupling.

The specific embodiment

Embodiment as depicted in figs. 1 and 2, frame 1 is ladder-shaped, adopts high-strength bolt to connect to form by girder steel.Girder steel is selected rectangle steel, square steel, circular steel or the H shape steel of different cross section shape according to concrete actual needs.By the mechanics of materials as can be known rectangle be better than square, square is better than circle, and H shaped steel is more reasonable than the square-section.So present embodiment adopts H shaped steel.Mounting spring seat 6 below frame 1, stressed more reasonable.On the H shaped steel lateral surface of the mobile direction both sides of screen branch single horizontal vibrating motor is installed and is made vibrator 2, vibrator 2 can adopt single horizontal vibrating motor, dual horizontal vibrating motor or common electric machine to drag outward.Also be equipped with on the H of this side section steel beam in order to protect the protective baffle plate 3 that single horizontal vibrating motor is without prejudice, protective baffle plate 3 is integral slabs of a bending in the present embodiment; Base 8 is fixed on the ground, and base 8 is connected with shock-absorbing spring 7 with frame, and the big spillplate 5 of both sides is installed on the base 8, is not connected with frame and vibrational system, does not therefore participate in vibration.Protective baffle plate 3 is realized being flexible coupling with the big spillplate 5 of both sides by the mechanism 9 that is flexible coupling; The high-strength rubber strip of mechanism's 9 employings is flexible coupling.Sieve plate 4 usefulness high-strength bolts are installed in above the frame 1, and sieve plate 4 adopts the elastic screen surface sieve plate, owing to be installed in above the frame 1, so the size of sieve plate 4 is not retrained by frame, can increase compass screen surface, enlarges the treating capacity in the unit interval.

As shown in Figure 3, protective baffle plate 3 is made up of discharging swash plate 3-1 and the little side plate 3-2 that is engaged on discharging swash plate 3-1 upper end.The convenient processing of this kind structure.

Claims

1. a trapezoidal sieve comprises frame (1), rack-mounted sieve plate (4), vibrator (2) and spring base (6), also comprises base (8), and the big spillplate (5) of both sides is characterized in that: frame (1) is the ladder-shaped that is connected to form by girder steel; Spring base (6) be installed on frame (1) lower surface and the base with frame (1) on the corresponding position of spring base, frame is connected on the base (8) by shock-absorbing spring (7); Vibrator (2) is installed on the lateral surface of crossbeam of frame both sides along the screen direction that divide to flow; Sieve plate (4) be installed in frame above; The big spillplate (5) of both sides is installed on the base (8) and is not connected with frame and vibrational system; Screen divides the outside of the direction that flows that protective baffle plate (3) also is installed on frame, and protective baffle plate (3) is flexible coupling with big spillplate (5).

2. trapezoidal sieve according to claim 1 is characterized in that: the girder steel of described composition frame is selected rectangle steel, square steel, circular steel or the H shape steel of different cross section shape according to concrete actual needs.

3. trapezoidal sieve according to claim 1 is characterized in that: vibrator (2) adopts single horizontal vibrating motor, dual horizontal vibrating motor or common electric machine to drag outward.

4. trapezoidal sieve according to claim 1 is characterized in that: sieve plate (4) adopts the sieve plate of elastic screen surface.

5. trapezoidal sieve according to claim 1 is characterized in that: protective baffle plate (3) is flexible coupling with big spillplate (5) by the mechanism that is flexible coupling (9).

6. trapezoidal according to claim 1 or 5 sieve is characterized in that: the described mechanism that is flexible coupling (9) adopts high-strength rubber strip.

7. trapezoidal sieve according to claim 1 is characterized in that: protective baffle plate (3) is the integral slab of a bending.

8. trapezoidal sieve according to claim 1 is characterized in that: protective baffle plate (3) is made up of discharging swash plate (3-1) and the little side plate (3-2) that is engaged on discharging swash plate (3-1) upper end.