CN112845031A

CN112845031A - Hydraulic high-frequency screen

Info

Publication number: CN112845031A
Application number: CN201911100309.7A
Authority: CN
Inventors: 刘辉; 刘鸿滨
Original assignee: Nanchang Mineral Systems Co Ltd
Current assignee: Nanchang Mineral Systems Group Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2021-05-28

Abstract

The invention discloses a hydraulic high-frequency screen, which comprises a steel structure platform, a screen frame and screen layers, wherein the screen frame is obliquely arranged on the steel structure platform, the number of the screen layers is multiple, each screen layer consists of a plurality of screen meshes, the plurality of screen meshes are distributed in a step manner, the tension degrees of the plurality of screen meshes on each screen layer are sequentially reduced from high to bottom, a transition plate is arranged between every two adjacent screen meshes, two sides of each screen mesh are respectively connected with the side wall of the screen frame through side leakage-proof parts, one end of each oblique screen mesh is arranged on a screen box through a fixing device, and the other end of each oblique screen mesh is arranged on the screen box through an adjustable device; the upper and lower screen mesh layers of the hydraulic high-frequency screen are relatively independent screening units, the interlayer spacing can be adjusted, so that the problems of cleaning and replacing the lower screen face do not exist, the apertures of the screen meshes of the upper screen mesh layer and the lower screen mesh layer can be the same or different, the same material can be screened, different materials can be screened, and products with various specifications can be obtained while the equipment handling capacity is improved.

Description

Hydraulic high-frequency screen

Technical Field

The invention relates to the field of high-frequency vibrating screens, in particular to a hydraulic high-frequency screen with a novel structure.

Background

The hydraulic high-frequency screen is a screening device which supplies power to a vibration source through a hydraulic source and drives a hydraulic high-frequency screen vibration device, so that the screen surface vibrates to screen materials.

No matter the sifting surface of former high frequency sieve is one deck or multilayer, all only a pan feeding device has inhibited the throughput of hydraulic pressure high frequency sieve to when hydraulic pressure high frequency sieve was the multilayer, lower floor sifting surface also produced stifled hole, clear up the sifting surface inconvenient, change sifting surface scheduling problem such as difficult very easily, made the throughput of equipment can not the biggest performance, along with the market demand of grit aggregate rises, urgent need solve the problem of high frequency sieve throughput.

For solving the problem of single pan feeding, in CN200810235238.7, the design of multichannel feed has been adopted, lean on the vibrating motor of sieve case top to provide exciting force, drive the vibration of whole sieve case, thereby reach the effect of screening material, each layer sifter aperture of sieve machine is unanimous, the productivity that equipment can be improved to this kind of design, but because the characteristics that the sieve case participated in the vibration, the interlamellar spacing problem between the sifter should not too big yet, be unfavorable for the change and the clearance of sifter, can produce certain restriction to the upsizing design of equipment, and each layer sifter aperture is unanimous, also be unfavorable for obtaining more specification products.

According to the screening theory, the screening movement consists of two parts of layering and separation, wherein layering means that coarse particles rise to the top of a vibrating material layer in the process, and fine materials reach the bottom of the material layer through a gap; separation is the process where the material reaches the position of the screen openings, is rejected if the particles are larger than the openings, and passes smoothly through the screen if the particles are smaller than the openings.

According to the relation between layering and separation, the optimal vibration parameters of different materials with different thicknesses are different, the screening of the coarse materials needs to be configured with vibration parameters with large amplitude and low frequency, the large amplitude is beneficial to the height of the throwing motion of the coarse materials, the low frequency reduces the contact of the materials and a screen surface, so that the materials can be efficiently layered and the abrasion to the screen surface is reduced; the screening of fine materials requires small amplitude and high frequency, and the high frequency is beneficial to increasing the contact times of the materials and the screen surface in unit time.

Traditional hydraulic pressure high frequency sieve is in the sieve material process, to same screen cloth layer, the vibration source of the same vibration frequency and amplitude of general adoption, however, the distribution of material screen cloth layer is different, the sifter that is close to the feed inlet causes the material of the inequality waiting to be sieved to pile up easily, it is high to need to provide the vibration frequency, the vibration that the amplitude is little, and keep away from the feed inlet, the material is less than the material that is close to the feed inlet position on the sifter that is close to the discharge gate position, and the material particle diameter that is close to the discharge gate position is bigger than normal (most small-particle diameter material has been sieved), it need provide the vibration that the amplitude is bigger than normal, vibration frequency is little, and because the material is less, it can reduce vibration power, reduce the energy consumption, to same screen cloth layer adoption same vibration source among.

Disclosure of Invention

The invention aims to provide a hydraulic high-frequency sieve which has high vibration efficiency, adjustable sieve screen position and good sieving effect and can sieve various materials simultaneously.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a hydraulic pressure high frequency sieve, includes steel construction platform, reel and screen cloth layer, the reel slope is installed on steel construction platform, its characterized in that: the screen layers are in a plurality of quantity, each screen layer is composed of a plurality of inclined screens, the inclination angles of the screens and the screen frame are the same, the inclined screens are distributed in a stepped mode, the tension degrees of the screens on each screen layer are sequentially reduced from high to bottom, namely under the condition of the same vibration source, the amplitude of the screen at a higher position is smaller, a transition plate is arranged between every two adjacent screens, the transition plate extends from the screen at the higher position to the upper part of the screen at the lower position, the transmission of materials among different screens of the same screen layer is facilitated, two sides of each screen are respectively connected with the side wall of the screen frame through a side leakage-proof piece and a fixing folded plate, the falling of the materials from the gap between the screens and the side wall of the screen frame can be avoided, the screening effect is influenced, the higher end of each inclined screen is arranged at the mounting position in the screen box through a fixing device in an adjustable mode, the bottom of each screen is provided with a plurality of vibrating beams, two ends of each vibrating beam are fixed on the screen frame through shear type rubber springs, the bottom of each vibrating beam is provided with at least one main vibrating source, the main vibrating source drives the vibrating beams and the screen to vibrate, and the shear type rubber springs at the two ends of each vibrating beam can effectively reduce the vibration of the screen frame driven by the vibrating beams; the working amplitude and vibration frequency of the main vibration source at the bottom of different screens are different; a plurality of supporting seats are welded on each vibrating beam, supporting claws are arranged on the supporting seats, and the supporting claws are supported at the bottom of the screen.

Furthermore, the number of the screen layers is two, the screen layers comprise an upper screen layer and a lower screen layer, a first feeding device, a first receiving device, a second feeding device and a third receiving device which correspond to the upper screen layer and the lower screen layer are respectively arranged on the screen frame, a slide carriage is arranged below the upper screen layer, a second receiving device is arranged at the lower end of the slide carriage, a chute is arranged below the lower screen layer, a discharge port is formed in the lower end of the chute, the upper layer and the lower layer of the hydraulic high-frequency screen are relatively independent screening units, and the interlayer spacing can be adjusted, so that the problems of cleaning and replacement of the lower screen surface do not exist.

Furthermore, secondary vibration sources are installed at the bottoms of the slide carriage and the chute, the bottom of the slide carriage is connected with the side wall of the screen frame through a damping device and angle steel, the damping device can be a damping spring or a rubber pad, the secondary vibration source is preferably a hydraulic vibrator or an electromagnetic vibrator, the accumulated materials of the slide carriage and the chute can be reduced, and the vibration of the screen frame is avoided.

Further, be connected on reel one end passes through articulated mounting and the steel construction platform, and the other end passes through adjusting device and lifting rope and is connected with the steel construction platform, and articulated mounting's structure can be for installing the axis of rotation at the steel construction platform, reel and a structure of axis of rotation fixed connection through the bearing, and it satisfies the reel and rotates for the steel construction platform along articulated mounting, and adjusting device receive and releases the lifting rope to the inclination of the whole reel of adjustment, adjusting device can be electronic loop wheel machine.

Furthermore, the main vibration source is a hydraulic vibrator, the main vibration source is connected with the hydraulic source through a hydraulic pipeline and a liquid distribution valve, the flow of hydraulic oil flowing to different hydraulic vibrators is controlled through the liquid distribution valve, the rotating speed of a hydraulic motor is further controlled, and the vibration frequency of different hydraulic vibrators is adjusted; the amplitude of the hydraulic vibrator is adjusted by adjusting the included angle of the eccentric block and changing the eccentric static moment to realize the amplitude adjustment of the vibrating beam.

Furthermore, divide the liquid valve to include a inlet and a plurality of liquid outlet, be equipped with an adjust knob on every liquid outlet, a similar ball valve structure is constituteed with a liquid outlet to one of them adjust knob, and is rotatory through adjust knob, controls the sectional area of liquid outlet, and then plays the flow and the amplitude of adjusting hydraulic pressure vibration valve.

Furthermore, the adjustable device comprises fixed angle steel, movable angle steel and a connecting hook, the fixed angle steel is fixed on the screen frame through a bolt, the side wall of the screen frame is provided with a plurality of groups of threaded holes connected with the fixed angle steel, and the fixed angle steel is fixed at different positions of the screen frame by selecting different threaded holes to be matched; be equipped with rectangular shape hole on the fixed angle steel, it installs on fixed angle steel with the cooperation of rectangular shape hole to remove the angle steel, through installing the different positions in rectangular shape hole, make the relative position transform of removing angle steel and fixed angle steel, thereby play the position control effect, be equipped with the boss on the lateral wall of removing the angle steel, the hook portion of the bending at hookup hook and screen cloth both ends back, it will cross cab apron and hook and fix on the boss to revolve to opposite bolt through two screw threads, install the position on fixed angle steel through adjusting the removal angle steel, and then adjust the screen cloth.

Furthermore, the fixing device consists of a fixing plate, a cross beam, a split bolt and channel steel, the fixing plate is fixed on the screen frame through the bolt, the side wall of the screen frame is provided with a plurality of groups of threaded holes connected with the fixing plate, the fixing plate is fixed at different positions of the screen frame through selecting different threaded holes to be matched, and the effect of adjusting the distance between screen layers can be achieved through selecting the installation positions of the adjustable device and the fixing device on the screen frame; the crossbeam is the I-steel structure, the both ends of crossbeam with respectively with a fixed plate welded fastening, be equipped with the screw hole on the crossbeam, be equipped with the through-hole on the channel-section steel, the lateral wall of channel-section steel is with the crooked hook portion of screen cloth hook closure back to it is fixed with the through-hole cooperation through split bolt and screw hole.

Further, the top that supports claw and screen cloth contact is equipped with the wear cap that elasticity wear-resisting material made, the contact surface of wear cap and screen cloth is the arc surface, and the laminating screen cloth that the arc surface can be better avoids the local deformation of screen cloth too big, the damage of screen cloth with higher speed.

Further, the rectangle structure that lateral part leak protection piece was made for the canvas, the both sides of lateral part leak protection piece all are equipped with the buckle of a plurality of equipartitions, and the buckle lock is passed through on the mesh of screen cloth in one side of lateral part leak protection piece, and the opposite side passes through the buckle lock on the link of reel lateral wall, the link is located the top of screen cloth for the screen cloth forms recessed cell type structure with the lateral part leak protection piece of both sides, adopts the buckle structure, makes things convenient for the dismouting of lateral part leak protection piece, can guarantee the laminating of lateral part leak protection piece and reel and screen cloth simultaneously.

In conclusion, the invention has the following beneficial effects:

1. the tensity of a plurality of screens on the same screen cloth layer is reduced from high to bottom in proper order and is set up to divide the sieve operating mode according to the vibration, can adjust the amplitude and the frequency of the vibration source of different screen cloth bottoms, divide the sieve with the vibration that satisfies different screen cloths, improve traditional hydraulic pressure shale shaker and adopt the not enough of same amplitude and vibration frequency, reduce the energy consumption, improve and divide the sieve effect.

2. The upper and lower sieve mesh layers of the hydraulic high-frequency sieve are relatively independent sieving units, and the interlayer spacing can be adjusted, so that the problems of cleaning and replacing the lower sieve face do not exist, meanwhile, the apertures of the sieve meshes of the upper sieve mesh layer and the lower sieve mesh layer can be the same or different, so that the same material can be sieved, different materials can be sieved, the product with various specifications can be obtained while the treatment capacity of the equipment is improved, and the performance of the equipment can be better reflected.

3. The both sides of screen cloth are passed through the lateral part leak protection piece and are connected with the reel lateral wall for the screen cloth forms recessed cell type structure with the lateral part leak protection piece of both sides, avoids the material to leak lower floor carriage apron or chute from the clearance of screen cloth and reel, and the cell type structure also avoids the material to pile up in the position that is close to the reel lateral wall, increases and divides the sieve effect.

4. The hydraulic high-frequency screen with the new structure has the characteristic that the screen frame does not vibrate, under the condition that the floor area is not changed, the number of the screen surface layers, the number of the material receiving devices and the number of the material feeding devices can be increased, the larger equipment treatment capacity can be obtained, products with more specifications can be obtained, and the large-scale design of equipment is facilitated.

Drawings

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

FIG. 2 is a schematic view showing the structure of the connection part of the screen frame and the slide carriage;

FIG. 3 is a schematic view of a screen surface and its attachment;

FIG. 4 is a schematic diagram of the construction of the adjustable device;

FIG. 5 is a schematic view of the structure of the primary vibration source;

FIG. 6 is a schematic view of the structure of the fixture;

FIG. 7 is a schematic view of the construction of a single screen and its attachment;

FIG. 8 is a schematic view of a screen and its attachment;

FIG. 9 is a schematic structural view of a dispensing valve;

figure 10 is a schematic view of the construction of the side leakage barriers.

In the figure, 1, a steel structure platform; 2. a screen frame; 3. a primary vibration source; 4. an upper screen layer; 5. a first material receiving device; 6. a second material receiving device; 7. a third material receiving device; 8. a feeding device I; 9. a feeding device II; 10. a lower screen layer; 11. a slide carriage; 12. a secondary vibration source; 13. a chute; 14. a hydraulic source; 15. angle steel; 16. a damping device; 17. a hinge device; 18. an adjustment device; 19. a lifting rope; 20. fixing the folded plate; 21. a discharge port; 22. a wear cap; 23. fixing angle steel; 24. moving the angle steel; 25. a connecting hook; 26. a transition plate; 27. a vibrating beam; 28; a supporting seat; 29. a support claw; 30. a fixing plate; 31. a cross beam; 32. oppositely pulling the bolts; 33. channel steel; 34. screening a screen; 35. a side leakage prevention member; 36. a retaining ring; 37. a shear type rubber spring; 38. a liquid separating valve; 39. a liquid inlet; 40. a liquid outlet; 41. adjusting a knob; 42. a boss; 43. and (5) hanging a ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, 2, 3, 4 and 8, a hydraulic high-frequency screen comprises a steel structure platform 1, a screen frame 2 and screen layers, wherein the screen frame 2 is obliquely installed on the steel structure platform 1, the number of the screen layers is multiple, the screen 34 and the screen frame 2 are integrally inclined at the same angle, each screen layer is composed of multiple inclined screen 34, the multiple inclined screen 34 are distributed in a stepped manner, the tension of the multiple screen 34 on each screen layer is sequentially reduced from high to bottom, namely, under the condition of the same vibration source, the amplitude of the screen 34 at a higher position is smaller, a transition plate 26 is installed between two adjacent screen 34, the transition plate 26 extends from the screen 34 at a higher position to above the screen 34 at a lower position, so as to facilitate the transmission of materials among different screen 34 of the same screen layer, two sides of each screen 34 are respectively connected with the side wall of the screen frame 2 through a side leakage-proof piece 35 and a fixed flap 20, the screening device can prevent materials from falling from a gap between the screen cloth 34 and the side wall of the screen frame 2 and affecting the screening effect, the higher end of each inclined screen cloth 34 is installed on the screen box 2 through a fixing device, the lower end of each inclined screen cloth 34 is installed on the screen box 2 through an adjustable device, the installation positions of the fixing device and the adjustable device in the screen frame 2 are adjustable, a plurality of vibrating beams 27 are installed at the bottom of each screen cloth 34, two ends of each vibrating beam 27 are fixed on the screen frame 2 through shear type rubber springs 37, at least one main vibration source 3 is installed at the bottom of each vibrating beam 27, and the working amplitudes and vibration frequencies of the main vibration sources 3 at the bottoms of different screen cloths 34 are different; as shown in fig. 5, a plurality of supporting seats 28 are welded on each vibration beam 27, and supporting claws 29 are provided on the supporting seats 28, and the supporting claws 29 are supported at the bottom of the screen 34.

As a preferred scheme, the number of the screen layers is two, and the screen layers include an upper screen layer 4 and a lower screen layer 10, a feeding device i 8 and a receiving device i 5 corresponding to the upper screen layer 4, a feeding device ii 9 and a receiving device iii 7 corresponding to the lower screen layer 10 are respectively arranged on the screen frame 2, a slide carriage 11 is arranged below the upper screen layer 4, a receiving device ii 6 is arranged at the lower end of the slide carriage 11, a chute 13 is arranged below the lower screen layer 10, a discharge port 21 is arranged at the lower end of the chute 13, and the upper and lower screen layers of the hydraulic high-frequency screen form relatively independent screening units, wherein the apertures of the screen meshes 34 of the upper screen layer 4 and the lower screen layer 10 can be the same or different, so as to screen the same material or different materials, and when the processing capacity of the equipment is increased, products of various specifications can be obtained, and the performance of the equipment can be better reflected.

Further, secondary vibration sources 12 are mounted at the bottoms of the slide carriage 11 and the chute 13, the bottom of the slide carriage 11 is connected with the side wall of the screen frame 2 through a damping device 16 and an angle iron 15, preferably, the damping device 16 can be a damping spring or a rubber pad, and the secondary vibration sources 12 are preferably hydraulic vibrators or electromagnetic vibrators, so that material accumulation of the slide carriage 11 and the chute 13 can be reduced, and vibration of the screen frame 2 is avoided.

Further, 2 one end of reel is passed through hinge means 17 and is connected with steel structure platform is last 1, the other end passes through adjusting device 18 and lifting rope 19 and is connected with steel structure platform 1, wherein, hinge means 17's structure is for installing at steel structure platform's axis of rotation and reel 2 and a structure of axis of rotation fixed connection through the bearing, also can for other meeting reel 2 along hinge means 17 for steel structure platform 1 rotates, adjusting device 18 receive and releases lifting rope 19 to adjust the inclination of whole reel 2, adjusting device 18 is preferably electric loop wheel machine.

Further, the main vibration source 3 is a hydraulic vibrator, the main vibration source 3 is connected with the hydraulic source 14 through a hydraulic pipeline and a liquid dividing valve 38, and the flow rate of hydraulic oil flowing to different hydraulic vibrators is controlled through the liquid dividing valve 38, so that the rotating speed of a hydraulic motor is controlled, and the vibration frequency of different hydraulic vibrators is adjusted; the amplitude of the hydraulic vibrator is adjusted by adjusting the included angle of the eccentric block and changing the eccentric static moment to realize the amplitude adjustment of the vibrating beam.

As shown in fig. 9, the liquid dividing valve 38 includes a liquid inlet 39 and a plurality of liquid outlets 40, each of the liquid outlets 40 is provided with an adjusting knob 41, one of the adjusting knobs 41 and one of the liquid outlets 40 form a structure similar to a ball valve, and the cross-sectional area of the liquid outlet 41 is controlled by rotating the adjusting knob 41, so as to adjust the flow rate and the amplitude of the hydraulic vibration valve.

As shown in fig. 1 and 4, the adjustable device includes a fixed angle iron 23, a movable angle iron 24 and a connecting hook 25, the side wall of the screen frame 2 is provided with a plurality of groups of threaded holes (not shown in the figure) connected with the fixed angle iron 23, and the fixed angle iron 23 is fixed at different positions of the screen frame 2 by selecting different threaded holes to match; the fixed angle steel 23 is fixed on the screen frame 2 through bolts, the fixed angle steel 23 is provided with elongated holes, the movable angle steel 24 is installed on the fixed angle steel 23 through the bolts and the elongated holes in a matched mode, the side wall of the movable angle steel 24 is provided with a boss 42, after the connecting hook 25 is hooked with the curved hook parts at the two ends of the screen 34, the transition plate 26 and the connecting hook 25 are fixed on the boss 42 through two bolts with opposite thread turning directions.

As shown in fig. 1 and 6, the fixing device is composed of a fixing plate 30, a cross beam 31, a split bolt 32 and a channel steel 33, the fixing plate 30 is fixed on the screen frame 2 through bolts, the side wall of the screen frame 2 is provided with a plurality of groups of threaded holes connected with the fixing plate 30, the fixing plate 30 is fixed at different positions of the screen frame 2 through selecting different threaded holes to be matched, and the distance between screen layers can be adjusted through selecting the installation positions of the adjustable device and the fixing device on the screen frame 2; the crossbeam 31 is the I-steel structure, and the both ends of crossbeam 31 with respectively with a fixed plate 30 welded fastening, be equipped with the screw hole on the crossbeam 31, be equipped with the through-hole on the channel-section steel 33, the crooked hook portion of the lateral wall of channel-section steel 33 and screen cloth 34 closes the back to it is fixed with the through-hole cooperation through split bolt 32 and screw hole.

Further, as shown in fig. 5, a wear cap 22 made of an elastic wear-resistant material is arranged at the top of the support claw 29, which is in contact with the screen 34, and the contact surface between the wear cap 22 and the screen 34 is an arc surface, which can better fit the screen 34, so as to avoid excessive local deformation of the screen 34, thereby accelerating the damage of the screen 34.

As shown in fig. 7, 8 and 10, the lateral leakage prevention member 35 is a rectangular structure made of canvas, a plurality of uniformly distributed retaining rings 36 are arranged on both sides of the lateral leakage prevention member 35, one side of the lateral leakage prevention member 35 is buckled on the meshes of the screen 34 through the retaining rings 36, the other side of the lateral leakage prevention member is buckled on a hanging ring 43 on the side wall of the screen frame 2 through the retaining rings 36, and the hanging ring 43 is located above the screen 34, so that the screen 34 and the lateral leakage prevention members 35 on both sides form a concave groove-shaped structure, the retaining ring structure is adopted, the disassembly and assembly of the lateral leakage prevention member 35 are facilitated, and the attachment of the lateral leakage prevention member 35 with the screen frame 2 and the screen 34 can be ensured.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a hydraulic pressure high frequency sieve, includes steel construction platform (1), reel (2) and screen cloth layer, reel (2) slope installation is on steel construction platform (1), its characterized in that: the screen mesh layer is multiple in number, each screen mesh layer is composed of multiple inclined screen meshes (34), the inclined screen meshes (34) are distributed in a stepped mode, the tension degree of the screen meshes (34) on each screen mesh layer is sequentially reduced from high to bottom, a transition plate (26) is installed between every two adjacent screen meshes (34), two sides of each screen mesh (34) are respectively connected with the side wall of the screen frame (2) through a side leakage-proof piece (35) and a fixing folded plate (20), the higher end of each inclined screen mesh (34) is installed on the screen box (2) through a fixing device, the lower end of each inclined screen mesh (34) is installed on the screen box (2) through an adjustable device, the fixing device and the adjustable device are arranged in the mounting position inside the screen frame (2) in an adjustable mode, multiple vibration beams (27) are installed at the bottom of each screen mesh (34), two ends of each vibration beam (27) are fixed on the screen frame (2) through shear type rubber springs (37), the bottom of each vibration beam (27) is at least provided with one main vibration source (3), and the working amplitude and the vibration frequency of the main vibration sources (3) at the bottoms of different screens (34) are different; a plurality of supporting seats (28) are welded on each vibrating beam (27), supporting claws (29) are arranged on the supporting seats (28), and the supporting claws (29) are supported at the bottom of the screen (34).

2. The hydraulic high-frequency screen as claimed in claim 1, wherein: the screen mesh layer number is two, including last screen mesh layer (4) and lower screen mesh layer (10), be equipped with pan feeding device (8), receiving device (5) that correspond with last screen mesh layer (4) and pan feeding device two (9), receiving device three (7) that correspond with lower floor's screen mesh (10) on reel (2) respectively, be equipped with carriage apron (11) below last screen mesh layer (4), carriage apron (11) lower extreme is equipped with receiving device two (6), is equipped with chute (13) below lower screen mesh layer (10), and chute (13) lower extreme is equipped with discharge gate (21).

3. The hydraulic high-frequency screen as claimed in claim 2, wherein: the secondary vibration source (12) is installed at the bottom of each of the slide carriage (11) and the chute (13), and the bottom of the slide carriage (11) is connected with the side wall of the screen frame (2) through a damping device (16) and angle steel (15).

4. A hydraulic high-frequency screen according to claim 1 or 3, characterized in that: one end of the screen frame (2) is connected with the steel structure platform (1) through a hinge device (17), and the other end of the screen frame is connected with the steel structure platform (1) through an adjusting device (18) and a lifting rope (19).

5. The hydraulic high-frequency screen as claimed in claim 4, wherein: the main vibration source (3) is a hydraulic vibrator, and the main vibration source (3) is connected with the hydraulic source (14) through a hydraulic pipeline and a liquid separating valve (38).

6. The hydraulic high-frequency screen as claimed in claim 5, wherein: the liquid separating valve (38) comprises a liquid inlet (39) and a plurality of liquid outlets (40), and each liquid outlet (40) is provided with an adjusting knob (41).

7. The hydraulic high-frequency screen as claimed in claim 6, wherein: adjustable device is including fixed angle steel (23), remove angle steel (24) and coupling hook (25), fixed angle steel (23) pass through the bolt fastening on reel (2), be equipped with rectangular shape hole on fixed angle steel (23), it installs on fixed angle steel (23) to remove angle steel (24) through bolt and the cooperation of rectangular shape hole, be equipped with boss (42) on the lateral wall of removal angle steel (24), coupling hook (25) and the crooked hook portion hook at screen cloth (34) both ends close the back, it will cross cab apron (26) and coupling hook (25) and fix on boss (42) through two screw threads to opposite bolt soon.

8. The hydraulic high-frequency screen as claimed in claim 7, wherein: fixing device comprises fixed plate (30), crossbeam (31), split bolt (32) and channel-section steel (33), fixed plate (30) are passed through the bolt fastening and are on reel (2), crossbeam (31) are the I-steel structure, the both ends of crossbeam (31) with respectively with a fixed plate (30) welded fastening, be equipped with the screw hole on crossbeam (31), be equipped with the through-hole on channel-section steel (33), the lateral wall of channel-section steel (33) and the crooked hook portion of screen cloth (34) hook the back to it is fixed with the through-hole cooperation through split bolt (32) and screw hole.

9. The hydraulic high-frequency screen as claimed in claim 8, wherein: wear-resisting cap (22) that elasticity wear-resisting material made is equipped with on the top that support claw (29) and screen cloth (34) contact, the contact surface of wear-resisting cap (22) and screen cloth (34) is the arc surface.

10. The hydraulic high-frequency screen as claimed in claim 9, wherein: the utility model discloses a screen frame, including lateral part leak protection piece (35), lateral part leak protection piece (35) are the rectangle structure that the canvas was made, and the both sides of lateral part leak protection piece (35) all are equipped with buckle (36) of a plurality of equipartitions, and one side of lateral part leak protection piece (35) is passed through buckle (36) lock on the mesh of screen cloth (34), and the opposite side passes through buckle (36) lock on link (43) of reel (2) lateral wall, link (43) are located the top of screen cloth (34) for screen cloth (34) and lateral part leak protection piece (35) of both sides form recessed cell type structure.