CN217342285U - Back flushing device of vibrating screen pipeline and vibrating screen with back flushing device - Google Patents

Abstract

The utility model provides a blowback device of a vibrating screen pipeline and a vibrating screen with the blowback device, the blowback device of the vibrating screen pipeline comprises a mounting seat, a gas circuit connecting pipe and a blowback pipe, wherein the mounting seat is provided with an inner surface and an outer surface which are arranged oppositely, and the middle part of the mounting seat is provided with an overflowing hole which runs through the inner surface and the outer surface of the mounting seat; the air path connecting pipe is positioned on the outer side of the outer surface of the mounting seat, and one end of the air path connecting pipe is communicated with the overflowing hole; the blowback pipe is located the inboard of the internal surface of mount pad, and the blowback pipe is including being the connecting tube section and the pipe segment of bending that the contained angle set up, and the one end and the overflowing hole of connecting tube section are linked together, and the other end and the pipe segment of bending of connecting tube section communicate, and the internal surface slope setting of the relative mount pad of connecting pipe segment is connected. Through the technical scheme that this application provided, can solve the poor problem of powder material mobility in the material pipeline of shale shaker among the correlation technique.

Description

Back-blowing device of vibrating screen pipeline and vibrating screen with same

Technical Field

The utility model relates to a dairy products apparatus for producing technical field particularly, relates to a blowback device of shale shaker pipeline and have its shale shaker.

Background

Screening the powder through the vibrating screen in the dairy product production device, the powder that the granule is little can flow down from the vibrating screen, the powder that the granule is big can be along with the screen cloth shakes the front end of vibrating screen, get into in the material pipeline of vibrating screen, because the material pipeline of vibrating screen is little with being connected endocyst pipeline slope, pipeline length is long, the large granule powder that the vibrating screen got off, directly get into in the material pipeline of vibrating screen, the large granule powder does not get into elbow department with mobility in the pipeline, use the large granule powder to block up in the material pipeline of vibrating screen for a long time.

Among the prior art, adopt the skin hammer to strike the material pipeline of shale shaker through the manual work, let the material pipeline of shale shaker in the powder flow, at the in-process of strikeing, the slipknot department can ooze the dust and influence sanitation, the skin hammer strikes the pipeline with the pipeline outer wall collision occasionally probably causes the damage of skin hammer to produce the foreign matter risk, long-time skin hammer can cause the pipeline sunken, causes the equipment damage.

SUMMERY OF THE UTILITY MODEL

The utility model provides a blowback device of shale shaker pipeline and have its shale shaker to solve the problem that the mobility is poor in the material pipeline of the shale shaker among the correlation technique.

According to one aspect of the utility model, the back blowing device of the vibrating screen pipeline comprises a mounting seat, a gas circuit connecting pipe and a back blowing pipe, wherein the mounting seat is provided with an inner surface and an outer surface which are oppositely arranged, and the middle part of the mounting seat is provided with an overflowing hole which penetrates through the inner surface and the outer surface of the mounting seat; the air path connecting pipe is positioned on the outer side of the outer surface of the mounting seat, and one end of the air path connecting pipe is communicated with the overflowing hole; the blowback pipe is located the inboard of the internal surface of mount pad, and the blowback pipe is including being the connecting tube section and the pipe segment of bending that the contained angle set up, and the one end and the overflowing hole of connecting tube section are linked together, and the other end and the pipe segment of bending of connecting tube section communicate, and the internal surface slope setting of the relative mount pad of connecting pipe segment is connected.

Furthermore, the included angle between the connecting pipe section and the bent pipe section is 70-100 degrees.

Further, the angle between the connecting pipe section and the inner surface of the mounting seat is between 30 ° and 60 °.

Further, the end wall of the bent pipe section remote from the end of the connecting pipe section is disposed obliquely.

Furthermore, the back blowing device of the vibrating screen pipeline further comprises a compressed air pipe and a quick connector, and two ends of the quick connector are respectively communicated with the air path connecting pipe and the compressed air pipe.

Furthermore, the back blowing device of the vibrating screen pipeline also comprises an air regulating valve, and the air regulating valve is arranged on the compressed air pipe.

Further, the mount pad includes the installation section of thick bamboo, and the installation section of thick bamboo includes bottom plate and the bounding wall of being connected along the outside of bottom plate, and the bounding wall extends along the circumference of bottom plate, and the discharge orifice runs through the setting on the bottom plate, and the bounding wall is connected with the material pipeline of shale shaker.

Further, the mount pad still includes the annular plate, and the annular plate is located the one end of keeping away from the bottom plate of bounding wall, and the interior border of annular plate is connected with the lateral wall of bounding wall, and the end wall of annular plate is laminated mutually with the lateral wall of the material pipeline of shale shaker.

Furthermore, a hoop mounting groove is formed in the outer side wall of the enclosing plate, and extends along the circumferential direction of the enclosing plate; and/or a sealing ring mounting groove is formed in the end wall, far away from the enclosing plate, of the annular plate and extends along the circumferential direction of the annular plate.

According to the utility model discloses an on the other hand provides a vibrating screen, and the vibrating screen includes: a material pipeline; the back blowing device of the vibrating screen pipeline is arranged on the side wall of the material pipeline, and the back blowing device of the vibrating screen pipeline is the back blowing device of the vibrating screen pipeline.

Use the technical scheme of the utility model, the blowback device of shale shaker pipeline includes the mount pad, gas circuit connecting pipe and blowback pipe, both ends through the overflowing hole with the mount pad communicate with the connecting pipe section of gas circuit connecting pipe and blowback pipe respectively, because the gas circuit connecting pipe is located the outside of the surface of mount pad, the connecting pipe section of blowback pipe is located the inboard of the internal surface of mount pad, thereby high-pressure gas can successively pass through the gas circuit connecting pipe, the overflowing hole, connecting pipe section and bend pipe section, to bend in the pipe section stretches into the material pipeline of shale shaker, realize that high-pressure gas from the outside of mount pad surface to the inboard blowback of mount pad internal surface, increase the mobility of powder in the material pipeline of the inboard shale shaker of mount pad internal surface. And, because the intercommunication pipeline section is the contained angle setting with the bending pipeline section, the internal surface slope setting of connecting pipe section relative mount pad for the axis of discharge orifice is kept away from to the one end of bending pipeline section of keeping away from the connecting pipe section, thereby the blowback pipe can be more to sedimentary large granule powder when the blowback, through the blowback, highly-compressed air drives the large granule powder and flows, makes the inboard powder mobility of mount pad internal surface better, and then increases the mobility of the interior powder of the material pipeline of shale shaker.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a blowback device of a vibrating screen pipeline provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram illustrating another angle of a blowback device of a vibrating screen pipe according to an embodiment of the present invention;

fig. 3 shows a schematic structural diagram of a back-blowing device of a vibrating screen pipeline, which is provided by the embodiment of the present invention, installed in a material pipeline;

fig. 4 is a schematic structural diagram of a vibrating screen provided by an embodiment of the present invention;

fig. 5 shows a schematic structural diagram of a material pipeline of a vibrating screen provided by an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a mounting seat; 14. mounting the cylinder; 141. a base plate; 142. enclosing plates; 1421. a hoop mounting groove; 15. an annular plate; 151. a sealing ring mounting groove;

20. the gas circuit connecting pipe;

30. a blowback pipe; 31. connecting the pipe sections; 32. bending the pipe section;

40. a quick connector; 50. a material pipeline; 60. a back-blowing device of the vibrating screen pipeline; 70. a compressed air pipe; 80. an air regulating valve;

A. the included angle between the connecting pipe section and the bending pipe section;

B. the included angle between the connecting pipe section and the inner surface of the mounting seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the embodiment of the utility model provides a blowback device of shale shaker pipeline, this blowback device of shale shaker pipeline includes mount pad 10, gas circuit connecting pipe 20 and blowback pipe 30, wherein, mount pad 10 has the internal surface and the surface of relative setting, the middle part of mount pad 10 is provided with the discharge orifice that runs through the internal surface and the surface of mount pad 10, gas circuit connecting pipe 20 is located the outside of the surface of mount pad 10, the one end and the discharge orifice of gas circuit connecting pipe 20 are linked together, blowback pipe 30 is located the inboard of the internal surface of mount pad 10, blowback pipe 30 is including connecting pipe section 31 and the pipe section 32 of bending that is the contained angle setting, the one end and the discharge orifice of connecting pipe section 31 are linked together, the other end and the pipe section 32 of bending of connecting pipe section 31 are linked together, the internal surface slope setting of connecting pipe section 31 relative mount pad 10.

Use the technical scheme of the utility model, the blowback device of shale shaker pipeline includes mount pad 10, gas circuit connecting pipe 20 and blowback pipe 30, both ends through the discharge orifice with mount pad 10 are linked together with gas circuit connecting pipe 20 and blowback pipe 30's connecting tube section 31 respectively, because gas circuit connecting pipe 20 is located the outside of mount pad 10's surface, blowback pipe 30's connecting tube section 31 is located the inboard of mount pad 10's internal surface, thereby high-pressure gas can successively pass through gas circuit connecting pipe 20, discharge orifice, connecting tube section 31 and bending tube section 32, to bend tube section 32 stretch into in the material pipeline 50 of shale shaker, realize that high-pressure gas from the inboard blowback of mount pad 10 internal surface to the outside of mount pad 10 surface, increase the mobility of powder in the material pipeline 50 of the inboard shale shaker of mount pad 10 internal surface. And, because the intercommunication pipeline section is the contained angle setting with the pipe section 32 of bending, the relative internal surface slope setting of mount pad 10 of connecting pipe section 31, make the one end of the pipe section 31 of bending of keeping away from of pipe section 32 keep away from the axis of overflowing hole, thereby blowback pipe 30 can be more to sedimentary large granule powder when the blowback, through the blowback, highly-compressed air drives the flow of large granule powder, make the inboard powder mobility of mount pad 10 internal surface better, and then increase the mobility of the powder in the material pipeline 50 of shale shaker.

In this embodiment, the length of blowback pipe 30 is 80mm, the diameter of blowback pipe 30 is 10mm, the sum of the length of the pipe section 32 of bending promptly and connecting pipe section 31 is 80mm, the diameter of the pipe section 32 of bending and connecting pipe section 31 is 10mm, gas circuit connecting pipe 20 and blowback pipe 30 all with mount pad welded connection, have the advantage of connecting reliably and simple structure, and the welding department is polished smoothly, avoid the powder to take place the friction with the welding department and cause the dust explosion, thereby improve production safety.

It should be noted that, the middle portion of the mounting seat 10 refers to the central position of the mounting seat 10, the overflowing hole is disposed at the central position of the mounting seat 10, and the overflowing hole penetrates through the inner surface and the outer surface of the mounting seat 10.

Specifically, connecting pipe section 31 and the pipe section 32 of bending are the contained angle setting and indicate, and the pipe section 32 of bending sets up for connecting pipe section 31 relatively, and the pipe section 32 of bending uses connecting pipe section 31 to buckle as the benchmark, has the contained angle between the axis of connecting pipe section 31 and the axis of the pipe section 32 of bending.

In this embodiment, the one end that connecting tube section 31 was kept away from to the pipe section 32 of bending is located the below of discharge orifice axis for when blowback pipe 30 blowback, high-pressure gas blows down from the pipe section 32 of bending, thereby high-pressure gas directly blows the powder, increases powder flow nature in the material pipeline 50 of shale shaker.

As shown in fig. 2, the included angle a between the connecting tube segment 31 and the bent tube segment 32 is between 70 ° and 100 °. By adopting the included angle A within the angle range, when the blowback pipe 30 performs blowback, high-pressure air is ensured to smoothly enter the material pipeline 50 of the vibrating screen on the inner side of the inner surface of the mounting seat 10, and the flowability of powder in the material pipeline 50 is increased.

If contained angle A is greater than 100, then unable effective utilization be the intercommunication pipeline section and the pipeline section 32 of bending that the contained angle set up, make the one end of keeping away from connecting pipeline section 31 of bending pipeline section 32 can't fully keep away from the axis in discharge orifice, thereby blowback pipe 30 is poor to sedimentary large granule powder blowback effect, the mobility of large granule powder is poor among the material pipeline 50, if contained angle A is less than 70, the pipeline section 32 of bending can block the high-pressure gas that connecting pipeline section 31 flows, cause high-pressure gas loss of pressure, reduce blowback effect of blowback pipe 30.

Specifically, the included angle a between the connecting tube segment 31 and the bending tube segment 32 may be 70 °, 80 °, 90 °, 100 ° and any other value between 70 ° and 100 °.

In this embodiment, the included angle a between the connecting pipe segment 31 and the bent pipe segment 32 is 85 °.

As shown in fig. 2, the angle B between the connecting tube section 31 and the inner surface of the mounting socket 10 is between 30 ° and 60 °. By adopting the included angle B within the angle range, when the blowback pipe 30 performs blowback, high-pressure air is ensured to smoothly enter the material pipeline 50 of the vibrating screen on the inner side of the inner surface of the mounting seat 10, and the flowability of powder in the material pipeline 50 is increased.

If the included angle B is smaller than 30 °, the connecting pipe section 31 will block the high-pressure gas flowing out from the overflow hole, resulting in pressure loss of the high-pressure gas, and reducing the back-blowing effect of the back-blowing pipe 30, if the included angle B is larger than 60 °, the normal direction of the gas flowing out from the bent pipe section 32 is nearly perpendicular to the axis of the material pipeline 50, after the high-pressure gas blows the powder in the material pipeline 50, the powder cannot obtain the movement trend of effectively flowing along the material pipeline 50, and the fluidity of the powder in the material pipeline 50 cannot be increased.

Specifically, the included angle a between the connecting tube segment 31 and the bending tube segment 32 may be 30 °, 40 °, 50 °, 60 ° and any other value between 30 ° and 60 °.

As shown in fig. 2, the end wall of the bent pipe section 32 away from the end of the connecting pipe section 31 is disposed obliquely. Adopt the bending pipe section 32 of above-mentioned structure, because the end wall slope setting of the one end of connecting pipe section 31 is kept away from to bending pipe section 32 for when high-pressure gas blows down from bending pipe section 32, increase the area of contact of powder in high-pressure gas and the material pipeline 50 of shale shaker, thereby increase the scope that high-pressure gas blows the powder, increase the mobility of powder in the material pipeline 50 of shale shaker.

In this embodiment, the end wall slope setting of the one end that connecting pipe section 31 was kept away from to bend pipe section 32 indicates that bend pipe section 32 keeps away from the port department cutting slope mouth of the one end of connecting pipe section 31 to the cutting department is polished smoothly, avoids the powder and takes place the friction with the cutting department and causes dust explosion, thereby improves production safety.

As shown in FIG. 1, the blowback device of the vibrating screen pipeline further comprises a compressed air pipe 70 and a quick connector 40, wherein two ends of the quick connector 40 are respectively communicated with the air path connecting pipe 20 and the compressed air pipe 70. By adopting the structure, the quick connector 40 realizes that the compressed air pipe 70 is communicated with the air path connecting pipe 20, so that the compressed air pipe 70 provides high-pressure air for the back blowing device of the vibrating screen pipeline, and the quick connector 40 is adopted for connection, so that the back blowing device of the vibrating screen pipeline is simple in structure and convenient to install and connect.

In this embodiment, the diameter of the quick coupling 40 is 10mm, and the quick coupling 40 is connected and fastened with the air path connecting pipe 20 through a threaded connection, so that the connection of the blowback device of the vibrating screen pipe is reliable and convenient.

As shown in fig. 1, the blowback device of the vibrating screen pipe further comprises an air adjusting valve 80, and the air adjusting valve 80 is disposed on the compressed air pipe 70. When the blowback pipe 30 is blowback, the air regulating valve 80 is arranged at the rear end of the compressed air pipe 70, and when the powder blockage conditions of different degrees are met, the pressure of high-pressure air conveyed by the compressed air pipe 70 to the blowback device of the vibrating screen pipeline is changed by regulating the air regulating valve 80, so that the use flexibility of the blowback device of the vibrating screen pipeline is improved.

As shown in fig. 1 and 2, the mounting seat 10 includes a mounting cylinder 14, the mounting cylinder 14 includes a bottom plate 141 and a surrounding plate 142 connected to an outer edge of the bottom plate 141, the surrounding plate 142 extends along a circumferential direction of the bottom plate 141, an overflow hole penetrates through the bottom plate 141, and the surrounding plate 142 is connected to a material pipe 50 of the vibrating screen. Adopt the installation section of thick bamboo 14 of above-mentioned structure, be connected with the material pipeline 50 of shale shaker through bounding wall 142 for the blowback device of shale shaker pipeline is connected with the material pipeline 50 of shale shaker, because the discharge orifice runs through the setting on bottom plate 141, bounding wall 142 is connected with the outside border of bottom plate 141, and bounding wall 142 extends along the circumference of bottom plate 141, make the material pipeline 50 of shale shaker only through discharge orifice and high pressurized air source intercommunication, thereby guarantee the blowback effect of high-pressure gas to powder in the material pipeline 50 of shale shaker.

The inner surface and the outer surface of the mounting seat 10, which are oppositely arranged, refer to the inner surface and the outer surface of the base plate 141, the air passage connecting pipe 20 is located at the outer side of the outer surface of the base plate 141, and the connecting pipe section 31 of the blowback pipe 30 is located at the inner side of the inner surface of the base plate 141.

As shown in fig. 1 and 2, the mounting seat 10 further includes an annular plate 15, the annular plate 15 is located at one end of the enclosure 142 far from the bottom plate 141, an inner edge of the annular plate 15 is connected with an outer side wall of the enclosure 142, and an end wall of the annular plate 15 is attached to a side wall of the material pipe 50 of the vibrating screen. Adopt above-mentioned annular plate 15, the lateral wall through the end wall of annular plate 15 and the material pipeline 50 of shale shaker is laminated mutually, realize that the blowback device of shale shaker pipeline installs on the lateral wall of material pipeline 50, and the axis of annular plate 15 is mutually perpendicular with the axis of material pipeline 50, when the blowback device of shale shaker pipeline carries out the blowback to the powder in the material pipeline 50, make the blowback device of shale shaker pipeline occupy less space in the material pipeline 50, thereby can not cause the material pipeline 50 pipe diameter undersize of the blowback device of installing the shale shaker pipeline, avoid causing the powder to block up because of the pipe diameter undersize of material pipeline 50, and then guarantee that the powder is mobile in the material pipeline 50.

In the present embodiment, the diameter of the annular plate 15 is 150 mm.

As shown in fig. 1, a clip mounting groove 1421 is provided on an outer side wall of the surrounding plate 142, and the clip mounting groove 1421 extends in a circumferential direction of the surrounding plate 142. By adopting the clamp installation groove 1421, the reverse blowing device of the vibrating screen pipeline and the material pipeline 50 can be connected through the clamp, so that the connection reliability and the installation convenience are improved.

As shown in fig. 2, a seal ring mounting groove 151 is provided on an end wall of the annular plate 15 remote from the shroud plate 142, the seal ring mounting groove 151 extending in the circumferential direction of the annular plate 15. By adopting the sealing ring mounting groove 151, a sealing ring can be arranged in the sealing ring mounting groove 151, so that the air tightness of the joint of the back flushing device of the vibrating screen pipeline and the material pipeline 50 is increased, and the back flushing effect of high-pressure gas on powder in the material pipeline 50 of the vibrating screen is ensured.

As shown in fig. 3 to 5, another embodiment of the present invention provides a vibrating screen, which includes a material pipeline 50 and a back-blowing device 60 of the vibrating screen pipeline, wherein the back-blowing device 60 of the vibrating screen pipeline is disposed on the side wall of the material pipeline 50, and the back-blowing device 60 of the vibrating screen pipeline is the back-blowing device of the vibrating screen pipeline provided above. Consequently, through the blowback device 60 that sets up the shale shaker pipeline on material pipeline 50, reduce the process that personnel's skin hammer strikes material pipeline 50, foreign matter and dust risk have been eliminated, and high-pressure gas carries out the blowback to sedimentary powder in material pipeline 50, increase the mobility of powder in the material pipeline 50, make the large granule powder that gets off from the shale shaker, the blowback gets into in the material pipeline 50 of shale shaker, the large granule powder flows in the pipeline, get into the endocyst through the elbow and collect the large granule bag, reduce the condition of using the large granule powder to block up in the material pipeline of shale shaker for a long time.

The device provided by the embodiment has the following beneficial effects:

(1) the bent pipe section 32 extends into the material pipeline 50 of the vibrating screen, and high-pressure gas can successively pass through the gas path connecting pipe 20, the overflowing hole, the connecting pipe section 31 and the bent pipe section 32, so that the back blowing of the high-pressure gas from the outer side of the outer surface of the mounting seat 10 to the inner side of the inner surface of the mounting seat 10 is realized, and the flowability of powder in the material pipeline 50 of the vibrating screen on the inner side of the inner surface of the mounting seat 10 is increased;

(2) the back-blowing device 60 of the vibrating screen pipeline is arranged on the material pipeline 50, so that the process that a person hammers the material pipeline 50, and foreign matter and dust risks are eliminated.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …", "above … …", "above … …, on a surface", "above", and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A back blowing device of a vibrating screen pipeline is characterized by comprising a mounting seat (10), an air passage connecting pipe (20) and a back blowing pipe (30), wherein,

the mounting seat (10) is provided with an inner surface and an outer surface which are oppositely arranged, and an overflowing hole penetrating through the inner surface and the outer surface of the mounting seat (10) is formed in the middle of the mounting seat (10);

the air path connecting pipe (20) is positioned on the outer side of the outer surface of the mounting seat (10), and one end of the air path connecting pipe (20) is communicated with the overflowing hole;

blowback pipe (30) are located the inboard of the internal surface of mount pad (10), blowback pipe (30) are including connecting pipe section (31) and the bending pipe section (32) that are the contained angle setting, the one end of connecting pipe section (31) with the discharge orifice is linked together, the other end of connecting pipe section (31) with bending pipe section (32) are linked together, it is relative to connect pipe section (31) the internal surface slope setting of mount pad (10).

2. A blow back device for vibrating screen pipes according to claim 1, characterized in that the angle between the connecting pipe section (31) and the bent pipe section (32) is between 70 ° and 100 °.

3. A blow back device for vibrating screen pipes according to claim 1, characterised in that the angle between the connecting pipe section (31) and the inner surface of the mounting seat (10) is between 30 ° and 60 °.

4. Blowback arrangement for vibrating screen pipes according to claim 1, characterised in that the end wall of the bent pipe section (32) at the end remote from the connecting pipe section (31) is arranged obliquely.

5. The blowback apparatus of a vibrating screen pipeline of claim 1, further comprising a compressed air pipe (70) and a quick coupling (40), wherein two ends of said quick coupling (40) are respectively connected to said air path connecting pipe (20) and said compressed air pipe (70).

6. The blowback apparatus of a vibrating screen pipe of claim 5, further comprising an air regulating valve (80), said air regulating valve (80) being disposed on said compressed air pipe (70).

7. The blowback apparatus of a vibrating screen pipe according to claim 1, wherein the mounting seat (10) comprises a mounting cylinder (14), the mounting cylinder (14) comprises a bottom plate (141) and a surrounding plate (142) connected with the outer edge of the bottom plate (141), the surrounding plate (142) extends along the circumferential direction of the bottom plate (141), the overflowing hole is penetratingly arranged on the bottom plate (141), and the surrounding plate (142) is connected with a material pipe (50) of the vibrating screen.

8. The blowback apparatus of shale shaker pipeline of claim 7, characterized in that, mount pad (10) still includes annular plate (15), annular plate (15) are located the one end of bounding wall (142) far away from bottom plate (141), the inner fringe of annular plate (15) with the lateral wall of bounding wall (142) is connected, the end wall of annular plate (15) with the lateral wall of shale shaker material pipeline (50) is laminated mutually.

9. Blowback apparatus for vibrating screen tubing of claim 8,

the outer side wall of the enclosing plate (142) is provided with a clamp installation groove (1421), and the clamp installation groove (1421) extends along the circumferential direction of the enclosing plate (142); and/or the presence of a gas in the gas,

and a sealing ring mounting groove (151) is formed in the end wall, far away from the enclosing plate (142), of the annular plate (15), and the sealing ring mounting groove (151) extends along the circumferential direction of the annular plate (15).

10. A vibratory screen, comprising:

a material conduit (50);

a blow-back device (60) of the vibrating screen pipe, which is arranged on the side wall of the material pipe (50), wherein the blow-back device (60) of the vibrating screen pipe is the blow-back device of the vibrating screen pipe according to any one of claims 1 to 9.

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