CN215232532U

CN215232532U - Mud screen

Info

Publication number: CN215232532U
Application number: CN202121294417.5U
Authority: CN
Inventors: 杜习营; 杜兴良
Original assignee: Xinxiang Senyou Mechanical And Electrical Co ltd
Current assignee: Xinxiang Senyou Mechanical And Electrical Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-12-21
Anticipated expiration: 2031-06-10

Abstract

The utility model discloses a slurry sieve, which comprises a sieve frame and a sieve box arranged above the sieve frame, wherein a plurality of elastic parts are arranged between the sieve frame and the sieve box, a sieve screen is arranged in the sieve box, a vibrating device used for driving the sieve box to vibrate is arranged above the sieve box, a distributing device positioned outside the sieve box is arranged above the sieve frame, the distributing device is provided with a discharge hole extending into the sieve box and facing the sieve screen, and the opening width of the discharge hole is equal to the width of the sieve screen; the sieve box is internally provided with a plurality of supporting components, and the sieve mesh is attached to the supporting components to form a cambered surface with a high middle part and low two ends. The utility model discloses a mud sieve compact structure, the thick liquids flow gently, and screening efficiency is high.

Description

Mud screen

Technical Field

The utility model relates to a shale shaker technical field, concretely relates to shale shaker.

Background

The prior screening of the slurry is generally to directly convey the slurry from a ball mill into a screen box, a filter screen is arranged in the screen box, the slurry passing through the filter screen is conveyed to the next process, and the slurry remained on the filter screen is removed. However, the slurry fine materials have certain viscosity, and the screen is a whole or two or three pieces of screen cloth which are lapped together and laid on the screen surface; due to the particularity of the slurry, the screen often has the condition of slurry deviation in the using process, so that the slurry is uneven in thickness and cannot be flatly laid on the screen surface. This type of filtration is not very efficient and it is necessary to improve the existing screens.

On the other hand, among the prior art, the side must be sealed by the sealing strip when the screen cloth is taut around, the effect of sealing strip is firstly to prevent to leak the material, secondly bottom screen cloth backup pad wearing and tearing screen cloth when preventing the shale shaker vibration, among the prior art, use the flat sealing strip to bond in the screen cloth backup pad, but this kind of mode can drop because of thick liquids temperature influence and shale shaker vibration, in addition on the one hand because the restriction of screen cloth mounting means, the length of screen cloth backup pad will be less than the length of screen cloth, cause the unable sealed screen cloth tip of flat sealing strip completely and leak the material.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a mud screen for overcoming the defects of the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a mud screen comprises a screen frame and a screen box arranged above the screen frame, wherein a plurality of elastic pieces are arranged between the screen frame and the screen box, a screen is arranged in the screen box, a vibrating device used for driving the screen box to vibrate is arranged above the screen box, a distributing device positioned outside the screen box is arranged above the screen frame, the distributing device is provided with a discharge hole extending into the screen box and facing the screen, and the opening width of the discharge hole is equal to the width of the screen; the sieve box is internally provided with a plurality of supporting components, and the sieve mesh is attached to the supporting components to form a cambered surface with a high middle part and low two ends.

In order to improve the screening efficiency of the mud screen, a working chamber for slurry flowing is formed in the distributor, the working chamber comprises an inner cavity and a transition cavity which are sequentially communicated, and the position of the transition cavity is higher than that of the discharge hole; the feed inlet is arranged on one side of the feed end of the inner cavity in a communicated mode, and the discharge outlet is arranged on one side of the discharge end of the transition cavity in a communicated mode.

In order to effectively slow down the flow velocity of the slurry and enable the flow velocity of the slurry reaching the screen to be moderate, the working chamber further comprises a vertical cavity used for enabling the slurry to flow vertically and an inclined cavity used for enabling the slurry to flow obliquely, the discharge end side of the transition cavity, the vertical cavity and the inclined cavity are sequentially communicated and arranged, the vertical cavity is vertically and downwards arranged along the axial direction of the screen, the discharge opening is formed in the discharge end side of the inclined cavity, and the inclined cavity is downwards inclined towards the inner cavity.

In order to improve the stability of the installation of the distributing device, the screen frame is also provided with a supporting rod for supporting the distributing device.

In order to improve the stability of the screen and adjust the tension degree of the screen, a screen tightening device which tightens the screen is arranged on the screen box.

In order to form sealing among the screen mesh, the supporting plates and the side plates, the screen box comprises the side plates and the supporting plates which are arranged on two sides, the supporting plates on the two sides are installed on the side plates, the supporting component is arranged between the supporting plates on the two sides, and the screen mesh is arranged on the supporting component and the supporting plates on the two sides in a supporting mode; and a sealing assembly is arranged between the screen and the supporting plate in a cushioning manner and is in contact with the side plate.

In order to make the leakproofness better between screen cloth and the curb plate, seal assembly includes the base member, the base member orientation one side of screen cloth is equipped with the caulking groove, the caulking groove cladding screen cloth side is followed the position, the extension of base member upper end is provided with laminating portion, laminating portion with the curb plate contacts.

In order to prevent the two sides of the screen cloth from deviating from the side plate along the top end of the attaching part when moving towards the side plate, so that the sealing performance between the side plate and the screen cloth is further ensured, a space is reserved between the base body and the side plate, and a buffer space is enclosed among the base body, the attaching part, the supporting plate and the side plate.

Further, the screen cloth includes first screen cloth and second screen cloth at least, first screen cloth is located the top of second screen cloth, be provided with connecting device between first screen cloth and the second screen cloth.

Further, the first screen cloth is provided with first colluding the board and the second colludes the board respectively along length direction's both ends, the second screen cloth is provided with the third respectively along length direction's both ends and colludes the board and the fourth colludes the board, connecting device is close to the one end of first screen cloth is provided with the fifth and colludes the board, connecting device is close to the one end of second screen cloth is provided with the sixth and colludes the board, first colludes the board and colludes the tight net device that the homonymy set up, the second colludes the board with the fifth colludes the board and colludes, the third colludes the board and colludes the tight net device that the homonymy set up and colludes, the fourth colludes the board with the sixth colludes the board and colludes the board.

The principle of the utility model is as follows:

1. be provided with the distributing device, this distributing device is fixed on the bank of screens that does not participate in the vibration, and the structure is more stable.

2. The opening width of the discharge port of the distributing device is equal to the width of the screen, and the width of the discharge port, the width of the transition cavity and the width of the inner cavity are equal, so that slurry can be uniformly distributed on the screen, and the screening efficiency of the slurry screen is improved. On the other hand, the distributing device is provided with a transition cavity which can effectively slow down the flow velocity of the pulp, so that the flow velocity of the pulp reaching the screen is alleviated.

3. The sealing component is arranged, the sealing component can be tightly attached and fixed on the supporting plate under the condition that no fixing device is used, and the sealing is formed between the screen and the supporting plate, so that the sealing component and the screen are more convenient to replace, and the service life is long.

4. The mud screen has the advantages of compact structure, smooth slurry flow and high screening efficiency.

Drawings

FIG. 1 is a front view of a shale shaker in an embodiment of the present invention;

FIG. 2 is a side view of an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1;

FIG. 4 is a partial enlarged view of B in FIG. 1;

FIG. 5 is an enlarged view of a portion C of FIG. 1;

fig. 6 is a schematic structural view of a distributor in an embodiment of the present invention;

fig. 7 is a schematic view of the installation and structure of the sealing assembly according to the embodiment of the present invention.

Description of reference numerals:

a screen frame 1, a screen box 2, an elastic piece 3, a vibrating device 4,

A screen 5, a first screen 501, a first hook plate 502, a second hook plate 503, a second screen 504, a third hook plate 505, a fourth hook plate 506,

A connecting device 6, a fifth hook plate 601, a sixth hook plate 602,

A distributing device 7, a feeding hole 701, a discharging hole 702, a working chamber 703, an inner cavity 704, a transition cavity 705, a vertical cavity 706, an inclined cavity 707, a material returning hole 708, a material returning switch 709,

A sealing member 8, a base 801, a caulking groove 802, a bonding portion 803, a buffer space 804,

A support bar 9, a fixing device 10, a net tightening device 11, a side plate 12, a support plate 13, a support component 14,

A bin 15 and a bin outlet 1501.

Detailed Description

In order to make the technical solution, objects and advantages of the present invention more clearly understood, the present invention is further explained with reference to the accompanying drawings and embodiments.

As shown in fig. 1-2, a mud sieve comprises a sieve frame 1, a sieve box 2, a vibrating device 4 and elastic pieces 3, wherein the sieve box 2 is arranged above the sieve frame 1, a plurality of elastic pieces 3 are arranged between the sieve frame 1 and the sieve box 2, the top of the sieve box 2 is provided with the vibrating device 4 for driving the sieve box 2 to vibrate, a storage bin 15 is arranged below the sieve box 2, a sieve screen 5 is arranged in the sieve box 2, a distributing device 7 is arranged above the sieve frame 1, the distributing device 7 is positioned outside the sieve box 2, and the distributing device 7 is provided with a discharge hole 702 extending into the sieve box 2 and facing the sieve screen 5. A net tightening device 11 for tightening the screen 5 is arranged in the screen box 2.

In order to improve the stability of the installation of the distributor 7, the screen frame 1 is further provided with a support rod 9 for supporting the distributor 7. In order to facilitate the collection of the slurry after vibration filtration, a bin 15 is arranged below the screen box 2, and a bin outlet 1501 is arranged at the outlet end of the bin 15. In order to ensure the better fixation of the elastic part 3 and the normal operation of the screen box 2, a plurality of fixing devices 10 are respectively arranged on two sides of the screen box 2, one end of the elastic part 3 is connected with the fixing devices 10, and the other end of the elastic part 3 is connected with the screen frame 1. In order to make the vibrating effect of the mud screen better, the vibrating devices 4 are provided with two vibrating devices 4 which are symmetrically arranged.

As shown in fig. 3 to 5, the screen 5 at least includes a first screen 501 and a second screen 504, the first screen 501 is located above the second screen 504, and a connecting device 6 is disposed between the first screen 501 and the second screen 504. First screen cloth 501 is provided with first board 502 and the second board 503 of colluding respectively along length direction's both ends, second screen cloth 504 is provided with third board 505 and the fourth board 506 of colluding respectively along length direction's both ends, connecting device 6 is close to first screen cloth 501's one end is provided with the fifth board 601 of colluding, connecting device 6 is close to second screen cloth 504's one end is provided with the sixth board 602 of colluding, first board 502 of colluding colludes with the tight net device 11 of homonymy setting, second board 503 of colluding with the fifth board 601 of colluding colludes, the third colludes board 505 and colludes with the tight net device 11 of homonymy setting and colludes, the fourth board 506 of colluding with the sixth board 602 of colluding colludes.

The thick liquids flow from the discharge gate 702 of distributing device 7, evenly distributed to the first screen cloth 501 in sieve case 2, sieve case 2 vibrates under the drive of vibrating device 4, drive first screen cloth 501 and the vibration of second screen cloth 504 in sieve case 2, thick liquids flow to second screen cloth 504 from first screen cloth 501, and the final thick liquids waste residue of process vibration is discharged through row's cinder notch, and the thick liquids that pass through the filtration of screen cloth 5 fall to feed bin 15, discharge from feed bin export 1501.

As shown in fig. 6, a distributor 7 is provided to distribute the slurry uniformly over the screen 5 and to moderate the flow rate of the slurry reaching the screen 5. A working chamber 703 for slurry flowing is formed inside the distributor 7, the working chamber 703 comprises an inner cavity 704 and a transition cavity 705 which are sequentially communicated, and the horizontal position of the transition cavity 705 is higher than that of the inner cavity 704; a feed inlet 701 is communicated with one side of the feed end of the inner cavity 704, a vertical cavity 706 for vertical flow of slurry and an inclined cavity 707 for inclined flow of slurry are sequentially communicated with one side of the discharge end of the transition cavity 705, the vertical cavity 706 is vertically and downwardly arranged along the axial direction of the screen 5, the discharge end side of the vertical cavity 706 is connected with the inclined cavity 707, a discharge outlet 702 is arranged on the discharge end side of the inclined cavity 707, and the inclined cavity 707 is downwardly inclined towards the inner cavity 704. The opening of the discharge port 702 is provided with a screen 5, and the feed port 701, the inner cavity 704, the transition cavity 705, the vertical cavity 706, the inclined cavity 707 and the discharge port 702 are sequentially communicated to form the working chamber 703. The bottom of the inner cavity 704 is provided with a feed back opening 708, and the feed back opening 708 is connected with a feed back switch 709. A funnel-shaped guide mechanism is arranged between the material return opening 708 and the material return switch 709. The material return opening 708 is used for discharging old materials staying in the inner cavity 704, and the material return opening 708 is provided with a funnel-shaped guide mechanism, so that the old materials can be discharged better. In addition, when the cloth crying needs to be cleaned, the material return opening 708 is convenient for discharging waste water.

When the slurry flows out of the discharge port 702, the slurry flows vertically in the vertical cavity 706, so that the slurry can flow out of the downward inclined cavity 707 after the flow of the slurry is stable, the flow rate of the slurry can be further buffered by the arrangement of the inclined cavity 707, the flow rate of the slurry reaching the screen 5 can be moderated while the slurry is uniformly distributed on the screen 5, and the impact force on the screen 5 can be effectively reduced. Specifically, the transition cavity 705 is horizontally disposed. And the position of the transition cavity 705 is higher than that of the discharge hole 702, when slurry enters from the feed hole 701, the slurry can enter the inner cavity 704 to flow to fully cover the whole inner cavity 704, at the moment, the slurry flows from the inner cavity 704 to the transition cavity 705, and the slurry flows out after horizontally flowing through the transition cavity 705, so that the flow rate of the slurry can be effectively reduced.

Due to the need to ensure that the slurry is all spread on the screen 5, on the other hand, due to the installation requirement, the width of the outlet 702 is equal to the width of the screen 5, and in practical application, the width of the screen 5 is slightly larger than the width of the outlet 702, and the width of the outlet 702 is equal to the width of the inner cavity 704 and the width of the transition cavity 705. This structural design can make thick liquids evenly distributed to on the screen cloth 5 to improve the screening efficiency of mud sieve.

The working process of the distributor 7 is as follows: before the work starts, the feed back port 708 is closed. After the operation starts, slurry enters from the feed port 701, flows into the inner cavity 704 to be fully paved on the whole inner cavity 704, flows from the inner cavity 704 to the transition cavity 705, sequentially flows through the transition platform, the vertical cavity 706 and the inclined cavity 707, and finally flows out from the discharge port 702 to be uniformly distributed on the screen 5 for screening. After the work is finished, the material return port 708 is opened, and old materials staying in the work cavity are discharged.

In order to improve the sealing performance of the mud screen, as shown in fig. 1, 2 and 7, the screen box 2 comprises side plates 12 and support plates 13 arranged on two sides, the support plates 13 on two sides are mounted on the side plates 12, a plurality of support assemblies 14 are arranged between the support plates 13 on two sides, and the screen 5 is supported and arranged on the support assemblies 14 and the upper sides of the support plates 13 on two sides; the screen 5 is attached to a support component 14 to form an arc surface with a high middle part and low two ends, a sealing component 8 is arranged between the screen 5 and the support plate 13 in a cushioning mode, and the sealing component 8 is in contact with the side plate 12. The sealing assembly 8 comprises a base body 801, wherein the base body 801 faces one side of the screen 5 and is provided with an embedded groove 802, the embedded groove 802 wraps the side edge of the screen 5, the upper end of the base body 801 extends to form a bonding portion 803, and the bonding portion 803 is in contact with the side plate 12.

In this embodiment, the sealing member 8 is made of a flexible material, preferably a rubber material. The sealing assembly 8 comprises a base body 801, wherein a caulking groove 802 is formed in one side, facing the screen 5, of the base body 801, and the caulking groove 802 wraps the side edge of the screen 5. The base 801 has a C-shaped cross section, and an opening of the C-shaped side facing the screen 5 is the caulking groove 802. The upper end of the base 801 is extended with the attaching portion 803, and the attaching portion 803 contacts with the side plate 12. A space is formed between the base 801 and the side plate 12, and a buffer space 804 is defined by the base 801, the attaching portion 803, the support plate 13 and the side plate 12. When the screen cloth 5 is subjected to the net tightening operation by the net tightening device 11, the both sides of the screen cloth 5 close to the side plate 12 move toward the side plate 12, and the buffer space 804 prevents the tip of the abutting portion 803 from separating from the side plate 12 when the both sides of the screen cloth 5 move toward the side plate 12, thereby further ensuring the sealing property between the side plate 12 and the screen cloth 5.

When the net fastening device 11 fastens the screen 5, the two ends of the screen 5 are pressed downwards, the support assembly 14 supports the middle position of the screen 5, the screen 5 is bent integrally, and downward pressing forces are applied to the two sides of the screen 5, so that the sealing assembly 8 can be tightly fixed on the support plate 13 without using any fixing device 10, and a seal is formed between the screen 5 and the support plate 13. The attaching portion 803 is in contact with the side plate 12, and the attaching portion 803 forms a seal between the side plate 12 and the mesh 5. In this configuration, there are no fixtures 10 between the seal assembly 8 and the screen 5, the support plate 13 and the side plates 12, making it even more convenient to replace the seal assembly 8 and the screen 5.

The above is only the preferred embodiment of the present invention, and to the technical personnel in the technical field, without departing from the present invention, the embodiment can still be modified, and the corresponding modification should also be regarded as the protection scope of the present invention.

Claims

1. A mud screen, its characterized in that: the vibrating screen comprises a screen frame (1) and a screen box (2) arranged above the screen frame (1), wherein a plurality of elastic pieces (3) are arranged between the screen frame (1) and the screen box (2), a screen (5) is arranged in the screen box (2), a vibrating device (4) for driving the screen box (2) to vibrate is arranged above the screen box (2), a distributor (7) positioned on the outer side of the screen box (2) is arranged above the screen frame (1), the distributor (7) is provided with a discharge port (702) extending into the screen box (2) and facing the screen (5), and the opening width of the discharge port (702) is equal to the width of the screen (5); a plurality of supporting components (14) are arranged in the screen box (2), and the screen (5) is attached to the supporting components (14) to form a cambered surface with a high middle part and low two ends.

2. The shale shaker as claimed in claim 1, wherein a working chamber (703) for slurry flow is formed inside said distributor (7), said working chamber (703) comprises an inner cavity (704) and a transition cavity (705) which are sequentially communicated, said transition cavity (705) is higher than said discharge hole (702); a feed inlet (701) is communicated with one side of the feed end of the inner cavity (704), and a discharge outlet (702) is communicated with one side of the discharge end of the transition cavity (705).

3. The shale shaker of claim 2, wherein the working chamber (703) further comprises a vertical cavity (706) for vertical flow of slurry and an inclined cavity (707) for inclined flow of slurry, the discharge end side of the transition cavity (705), the vertical cavity (706) and the inclined cavity (707) are sequentially communicated, the vertical cavity (706) is vertically arranged downwards along the axial direction of the screen (5), the discharge port (702) is arranged at the discharge end side of the inclined cavity (707), and the inclined cavity (707) is arranged downwards towards the inner cavity (704).

4. The shale shaker as claimed in claim 1, wherein said screen frame (1) is further provided with a support bar (9) for supporting said distributor (7).

5. A shale shaker as claimed in claim 1, wherein said screen box (2) is provided with a screen tightening means (11) for tensioning said screen mesh (5).

6. The mud screen according to claim 1, wherein the screen box (2) comprises two side plates (12) and two support plates (13), the two side support plates (13) are arranged on the side plates (12), the support component (14) is arranged between the two side support plates (13), and the screen cloth (5) is supported and arranged on the upper sides of the support component (14) and the two side support plates (13); a sealing assembly (8) is arranged between the screen (5) and the supporting plate (13) in a cushioning mode, and the sealing assembly (8) is in contact with the side plate (12).

7. The mud screen of claim 6, wherein the sealing assembly (8) comprises a base body (801), a caulking groove (802) is formed in one side, facing the screen mesh (5), of the base body (801), the caulking groove (802) covers the side edge of the screen mesh (5), an attaching portion (803) extends from the upper end of the base body (801), and the attaching portion (803) is in contact with the side plate (12).

8. The shale shaker of claim 7, wherein there is a spacing between the base body (801) and the side plates (12), the base body (801), the abutment portion (803), the support plate (13) and the side plates (12) enclosing a buffer space (804).

9. A shale shaker as claimed in claim 5, wherein said screen (5) comprises at least a first screen (501) and a second screen (504), said first screen (501) being located above said second screen (504), said first screen (501) and second screen (504) having a connection means (6) arranged therebetween.

10. The shale shaker of claim 9, wherein both ends of the first screen (501) along the length direction are respectively provided with a first hook plate (502) and a second hook plate (503), a third hook plate (505) and a fourth hook plate (506) are respectively arranged at two ends of the second screen (504) along the length direction, a fifth hook plate (601) is arranged at one end of the connecting device (6) close to the first screen (501), a sixth hook plate (602) is arranged at one end of the connecting device (6) close to the second screen (504), the first hook plate (502) is hooked with the net fastening device (11) arranged on the same side, the second hook plate (503) is hooked with the fifth hook plate (601), the third hook plate (505) is hooked with a net fastening device (11) arranged on the same side, and the fourth hook plate (506) is hooked with the sixth hook plate (602).