CN217200243U

CN217200243U - Scraper conveyor with spraying device

Info

Publication number: CN217200243U
Application number: CN202122561588.6U
Authority: CN
Inventors: 张晓峰; 马兰英; 亓鹏; 张晓琪
Original assignee: Shandong Lingxiyuan Technology Development Co ltd
Current assignee: Shandong Lingxiyuan Technology Development Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-08-16
Anticipated expiration: 2031-10-22

Abstract

The utility model relates to a material conveying device technical field especially relates to a scraper conveyor with spray set, including material conveyer trough, cyclic annular chain, scraper blade, spray set. The scraper comprises a scraper body and a rolling body, wherein a fixing hole and a sewage discharge hole which are communicated with each other are formed in the scraper body, and the fixing hole and the sewage discharge hole penetrate through the scraper body; the rolling body comprises a shell and balls, an installation cavity is formed in the shell, the balls are installed in the installation cavity, and the shell is provided with a sewage outlet hole communicated with the installation cavity and the sewage discharge hole; the spraying device is arranged at the machine head and/or the machine tail, the machine head and/or the machine tail is provided with a sewage disposal area, the spraying device comprises a water outlet pipe arranged at the sewage disposal area and a spray head arranged at the water outlet pipe, a water outlet hole is formed in the pipe wall of the water outlet pipe, a water spraying channel communicated with the water outlet hole is formed in the spray head, and the sewage disposal area and the moving area of the fixed hole are at least partially overlapped. The spraying device can wash the scraper to reduce impurities accumulated in the mounting cavity, and the rolling performance of the ball is improved.

Description

Scraper conveyor with spraying device

Technical Field

The utility model relates to a material conveying device technical field especially relates to a scraper conveyor with spray set.

Background

A scraper conveyor is a conveying device for conveying coal and materials, and generally includes an annular chain and scrapers mounted on the annular chain, wherein the annular chain can drive the scrapers to move on a material conveying groove of the scraper conveyor. For the friction loss that reduces scraper blade and material conveyer trough, the bottom of current scraper blade is equipped with the rolling element, and the rolling element includes the shell and can be in the rolling ball of shell, and the ball has the part to stretch out the bottom side of shell to can roll on the material conveyer trough, change the sliding friction between scraper blade and the material conveyer trough into rolling friction, and then reduce the running resistance of scraper blade, and reduce wearing and tearing.

But scraper conveyor usually uses under the relatively poor scene of environmental cleanliness such as colliery, has impurity such as buggy, mud usually on the material conveyer trough, and the scraper blade is at the operation in-process, and impurity gets into in the shell easily. After a long time of use, the foreign substances accumulated in the housing increase the rolling resistance of the balls, and even cause the balls to be caught in the housing and to be difficult to rotate.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a scraper conveyor with spray set, its spray set can wash the scraper blade to reduce impurity and pile up in the installation cavity, improve the rolling performance of ball, the effectual problem that exists among the prior art of having solved.

In order to solve the problem, the utility model provides a scraper conveyor with spray set, including material conveyer trough, cyclic annular chain, scraper blade, spray set. The annular chain can circularly move relative to the material conveying groove; the scraper comprises a scraper body and a rolling body, the scraper body is arranged on the annular chain, a fixing hole and a sewage discharge hole which are communicated with each other are formed in the scraper body, and the fixing hole and the sewage discharge hole penetrate through the scraper body; the rolling body is arranged in the fixed hole and comprises a shell and a ball, an installation cavity is formed in the shell, the ball is arranged in the installation cavity, part of the ball extends out of the bottom side of the scraper body, and the shell is provided with a sewage outlet hole communicated with the installation cavity and the sewage discharge hole; the spraying device is arranged at the machine head and/or the machine tail, the machine head and/or the machine tail is provided with a sewage disposal area, the spraying device comprises a water outlet pipe arranged at the sewage disposal area and a spray head arranged at the water outlet pipe, a water outlet hole is formed in the pipe wall of the water outlet pipe, a water spraying channel communicated with the water outlet hole is formed in the spray head, and the sewage disposal area and the moving area of the sewage disposal hole are at least partially overlapped.

Furthermore, the outlet pipe stridees across the region of decontaminating, and the outlet pipe interval sets up a plurality of apopores to a plurality of shower nozzles of installation.

Further, the cleaning area comprises a partial conveying area in which the scraper moves in a straight line, a transition area in which the scraper moves in an arc line, and a turnover area in which the scraper moves in a roughly vertical direction, wherein the transition area is positioned between the conveying area and the turnover area; among the plurality of spray heads, at least one spray head is positioned in the conveying area, at least one spray head is positioned in the transition area, and at least one spray head is positioned in the turnover area.

Furthermore, the water outlet pipe is an arc-shaped water outlet pipe, and the arc-shaped water outlet pipe extends from the conveying area to the overturning area.

Furthermore, the water outlet pipe is arranged on the edge of the dirt cleaning area and extends along the edge of the dirt cleaning area, and at least one spray head extends towards the scraper blade positioned in the dirt cleaning area in an inclined mode.

Furthermore, the included angle between the extending direction of the spray head and the horizontal direction is alpha, and alpha is more than or equal to 45 degrees and less than or equal to 55 degrees.

Furthermore, a guide groove is formed on one side, away from the water outlet hole, of the spray head, the guide groove forms a part of the water spraying channel, and the guide groove extends in the radial direction of the spray head.

Furthermore, the spraying device further comprises a connecting piece, the connecting piece comprises a connecting ring sleeved on the water outlet pipe and a connecting column formed on the side wall of the connecting ring, and the connecting column extends towards the direction far away from the water outlet pipe.

Furthermore, the scraper conveyor also comprises a sewage discharge filter screen, the sewage discharge filter screen is installed in the sewage discharge hole, and the sewage discharge filter screen is separated into the sewage discharge hole and the outer side of the scraper body.

Further, the distance between the top surface of the sewage discharge filter screen and the top edge of the sewage discharge hole is not less than 3 mm.

The beneficial effects of the utility model reside in that, when the scraper blade removed to the region of decontaminating, spray set can spray the blowoff hole of scraper blade body, and rivers get into the installation intracavity in order to dilute impurity, make impurity become the fluid form, and the blowoff hole is discharged from more easily to the impurity of fluid form. And, under hydraulic effect, the impurity in scraper blade body and the roll can be washed out by rivers, reduces the impurity card in scraper blade body and roll. In addition, after washing, a small amount of moisture can be retained in the mounting cavity, and when materials are conveyed, impurities entering the mounting cavity are mixed with the moisture, so that the mobility of the impurities can be improved, and the resistance of the impurities to the balls is reduced. In addition, the water flow sprayed by the spraying device can play a role in assisting in cooling the ball. The utility model discloses a scraper conveyor with spray set has effectually solved the problem that exists among the prior art.

Drawings

The accompanying drawings, which 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 do not constitute a limitation on the invention. In the drawings:

fig. 1 is a schematic view of a partial three-dimensional structure of a scraper conveyor according to an embodiment of the present invention.

Fig. 2 is a schematic partial front sectional view of a scraper conveyor according to an embodiment of the present invention.

Fig. 3 is a schematic top view of a part of a scraper conveyor according to an embodiment of the present invention.

Fig. 4 is a schematic top sectional view of a portion of a scraper conveyor according to another embodiment of the present invention.

Fig. 5 is a schematic side view, partially in section, of a scraper conveyor according to another embodiment of the present invention.

Fig. 6 is a partially enlarged schematic view of a portion a of fig. 5.

Fig. 7 is a schematic view of a partial three-dimensional structure of a spraying device according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a scraper according to an embodiment of the present invention.

Fig. 9 is a schematic partial sectional view of a scraper according to an embodiment of the present invention.

Fig. 10 is a schematic partial sectional view of a scraper body according to an embodiment of the present invention.

Fig. 11 is a schematic top view of a scraper according to an embodiment of the present invention.

Fig. 12 is a schematic partial sectional view of a squeegee according to another embodiment of the present invention.

Wherein: 1. a material conveying groove; 2. an endless chain; 3. a squeegee; 31. a scraper body; 311. a fixing hole; 313. a sewage draining hole; 32. a rolling body; 321. a housing; 3211. a sewage outlet hole; 3212. a mounting cavity; 322. a ball bearing; 4. a spraying device; 41. a water outlet pipe; 42. a spray head; 421. a water spray channel; 4211. a guide groove; 43. a connecting member; 431. a connecting ring; 432. connecting columns; 5. cleaning the area; 51. a delivery zone; 52. a transition zone; 53. a turning-over area; 8. a sewage discharge filter screen; 9. a moving area.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are connected without a connection relationship by an excessive structure and are connected to each other only by the connection structure to form a whole. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The utility model discloses in, as shown in fig. 1 to 12, provide a scraper conveyor with spray set 4, including material conveyer trough 1, cyclic annular chain 2, scraper blade 3, spray set 4. The annular chain 2 can circularly move relative to the material conveying groove 1; the scraper 3 comprises a scraper body 31 and a rolling body 32, the scraper body 31 is installed on the annular chain 2, a fixing hole 311 and a sewage discharge hole 313 which are communicated with each other are arranged in the scraper body 31, and the fixing hole 311 and the sewage discharge hole 313 penetrate through the scraper body 31; the rolling body 32 is arranged in the fixing hole 311, the rolling body 32 comprises a shell 321 and a ball 322, a mounting cavity 312 is formed in the shell 321, the ball 322 is arranged in the mounting cavity 312, part of the ball 322 extends out of the bottom side of the scraper body 31, and the shell 321 is provided with a sewage outlet hole communicated with the mounting cavity 312 and the sewage outlet hole 313; the spraying device 4 is arranged at the machine head and/or the machine tail, the machine head and/or the machine tail is provided with a cleaning area 5, the spraying device 4 comprises a water outlet pipe 41 arranged at the cleaning area 5 and a spray head 42 arranged at the water outlet pipe 41, a water outlet hole is arranged on the pipe wall of the water outlet pipe 41, the spray head 42 forms a water spraying channel 421 communicated with the water outlet hole, and the cleaning area 5 and the moving area of the sewage discharge hole 313 are at least partially overlapped.

In the embodiment shown in fig. 3, the area within the dashed box is substantially the purge area 5 and the area within the dotted box is substantially the movement area 9 of the drain hole 313. When the scraper 3 moves to the cleaning region 5, the shower device 4 can shower the drain hole 313 of the scraper body 31. The sprayed water flows into the mounting cavity 3212 through the sewage discharge hole 313 and the sewage discharge hole 3211 to dilute impurities inside the scraper body 31 and the rolling body 324, so that the impurities are fluid-like, and the fluid-like impurities are more easily discharged from the sewage discharge hole 313. Especially, when the scraper body 31 is turned downwards, the diluted impurities can be discharged under the action of gravity, and the scraper body 31 can vibrate during operation, and the diluted impurities are more easily discharged through the sewage discharge holes 313 under the action of vibration.

In addition, under the effect of water pressure, softer impurity is broken into finer granule by the impact force of rivers easily, is difficult for blocking in installation cavity 3212, outlet 3211 and blowdown hole 313, discharges more easily. And the impact force of rivers can produce thrust to impurity, and impurity can be discharged under thrust to further reduce the impurity card in scraper blade body 31 and rolling element 32.

Moreover, after the washing, a small amount of moisture can be retained in the mounting cavity 312, and when materials are conveyed, impurities entering the mounting cavity 312 are mixed with the moisture, so that the flowability of the impurities can be improved, and the resistance of the impurities to the balls 322 is reduced. Especially in the coal mine, the coal slime entering the installation cavity 312 is mixed with water, so that the effect of lubricating the balls 322 can be achieved, and the rolling performance of the balls 322 is improved.

In addition, the water flow sprayed by the spraying device 4 can play a role in assisting in cooling the balls 322.

It should be noted that, in the present invention, the state in which the balls 322 partially extend out of the bottom side of the housing 321 is based on the state in which the balls 322 face downward with respect to the scraper body 31, and it can be understood that, when the balls 322 face upward with respect to the scraper body 31, the balls 322 partially extend out of the top side of the housing 321. The fact that the movement regions of the dirt removing region 5 and the dirt discharge holes 313 at least partially overlap means that when the scraper 3 moves to the dirt removing region 5, the dirt discharge holes 313 of the scraper body 31 are completely located in the dirt removing region 5, or only part of the dirt discharge holes 313 of the scraper body 31 are located in the dirt removing region 5, and in the above case, the spray heads 42 can spray the dirt discharge holes 313.

In the preferred embodiment, more specifically, the outlet pipe 41 spans the decontamination area 5, and a plurality of outlet holes are spaced on the outlet pipe 41 to mount a plurality of spray heads 42.

After the scraper 3 enters the decontamination area 5, the plurality of spray heads 42 can increase the number of times the scraper 3 is washed to improve the washing effect. Specifically, when the scraper 3 moves to the position of the first spray head 42, the spray heads 42 primarily wash the scraper 3, at least part of impurities in the installation cavity 312 flow down along with water flow, and then when the scraper 3 moves to the next spray head 42, the spray head 42 can wash the scraper 3 more deeply, especially can wash the installation cavity 312 more deeply, so that the impurities in the installation cavity 312 can be further reduced under the washing of a plurality of spray heads 42.

With regard to the arrangement of the spray heads 42, more specifically, the cleaning region 5 includes a partial conveying region 51 in which the scrapers 3 move in a straight line, a transition region 52 in which the scrapers 3 move in an arc line, and a turning region 53 in which the scrapers 3 move in a substantially vertical direction, the transition region 52 being located between the conveying region 51 and the turning region 53; of the plurality of spray heads 42, at least one spray head 42 is located in the delivery zone 51, at least one spray head 42 is located in the transition zone 52, and at least one spray head 42 is located in the inversion zone 53.

As shown in fig. 3, when the scraper 3 is in the conveying area 51, the top surface of the scraper is substantially upward, the spray head 42 located in the conveying area 51 can directly spray the top surface of the scraper body 31, and water flows from the sewage discharge hole 313 and the sewage discharge hole 3211 into the installation cavity 3212 to dilute impurities. When the scraper 3 is in the transition area 52, the scraper is in an inclined state, and impurities are easily discharged from the sewage hole 313 along with water flow during the washing process. When the scraper 3 is in the turnover area 53, the side surface of the scraper body 31 is turned upwards, and impurities are easier to discharge from the sewage discharge hole 313 along with water flow. As a result, the blade 3 has a plurality of states when moving in the cleaning region 5, and the shower device 4 washes the blade 3 in each state, thereby improving the washing efficiency.

Note that, in the present embodiment, since there is an error in the movement of the squeegee 3 in the vertical direction, "substantially vertical direction" includes the vertical direction, and also includes a direction deviating from the vertical direction by a small amount.

As to the form of the water outlet pipe 41, more specifically, the water outlet pipe 41 is an arc-shaped water outlet pipe 41, and the arc-shaped water outlet pipe 41 extends from the conveying area 51 to the turning area 53. As shown in fig. 4, the curved outlet pipe 41 facilitates the arrangement of the spray head 42 in a plurality of orientations to further wash the blade 3 in a plurality of orientations to enhance the washing effect. In particular, when the scraper 3 is in the turning area 53, the part of the spray heads 42 on the arc-shaped water outlet pipe 41 of the turning area 53 can spray the sewage discharge holes 313 towards the top surface of the scraper body 31.

With regard to the arrangement of the outlet pipe 41 and the spray heads 42, in a preferred embodiment, the outlet pipe 41 is further provided at the edge of the cleaning area 5 and extends along the edge of the cleaning area 5, and at least one spray head 42 extends obliquely towards the scraper 3 located at the cleaning area 5. As shown in fig. 5 and 6, the spray heads 42 spray obliquely toward the scraper 3 at the edge of the dirt removing area 5, as compared with spraying the scraper 3 in the vertical direction or in the horizontal direction, and the spraying range can be expanded. Particularly, when the scraper 3 is provided with a plurality of rolling bodies 32, one spray head 42 can simultaneously spray the sewage discharge holes 313 corresponding to the plurality of rolling bodies 32, thereby improving the washing efficiency.

More specifically, the included angle between the extending direction of the nozzle 42 and the horizontal direction is α, and α is greater than or equal to 45 ° and less than or equal to 55 °. As shown in fig. 6, α is within the above range, the spray head 42 can spray the sewage discharge hole 313, and can increase the spray range, improve the utilization rate of the water flow, and improve the washing effect.

The "horizontal direction" in the present embodiment is based on a state in which the scraper conveyor is horizontally placed.

As for the structure of the head 42, more specifically, a side of the head 42 remote from the nozzle hole is formed with a guide groove 4211, the guide groove 4211 constitutes a part of the water spray passage 421, and the guide groove 4211 extends in a radial direction of the head 42. As shown in fig. 7, the guide groove 4211 can guide the water flow to be sprayed along the groove wall, and one water flow can be dispersed in multiple directions, thereby expanding the spraying range. Especially, when the scraper 3 is provided with a plurality of rolling bodies 32, one spray head 42 can spray the sewage discharge holes 313 corresponding to the plurality of rolling bodies 32 at the same time, thereby improving the washing efficiency.

In the embodiment shown in fig. 7, more specifically, the spraying device 4 further includes a connecting member 43, the connecting member 43 includes a connecting ring 431 sleeved on the water outlet pipe 41 and a connecting column 432 formed on a side wall of the connecting ring 431, and the connecting column 432 extends in a direction away from the water outlet pipe 41. When the water outlet pipe 41 is fixed, the water outlet pipe can be fixed on the rack through the connecting column 432. In addition, the connecting ring 431 circumferentially wraps the water outlet pipe 41, so that the supporting stability of the connecting ring 431 can be improved, and particularly when water flows are introduced into the water outlet pipe 41, the shaking of the water outlet pipe 41 can be reduced, the stability of the spraying direction of the spray head 42 is improved, and the washing effect is improved.

It should be noted that the present embodiment does not limit the form of the connecting column 432, and in one embodiment, the connecting column 432 is a threaded column.

Further specifically, the scraper conveyor further comprises a sewage discharge filter screen 8, the sewage discharge filter screen 8 is installed in the sewage discharge hole 313, and the sewage discharge filter screen 8 is separated into the sewage discharge hole 3211 and the outer side of the scraper body 31. As shown in fig. 11 and 12, the dirt discharging screen 8 can block large-particle materials from entering the installation cavity 312 during the material conveying process of the scraper 3. When scraper blade 3 moves to the regional 5 of decontaminating, the rivers that spray set 4 jetted can be got into in scraper blade body 31 and the rolling element 32 by blowdown filter screen 8 to dilute impurity, impurity after diluting can be discharged by blowdown filter screen 8.

It should be noted that the present embodiment does not limit the manner in which the drain strainer 8 is installed in the drain hole 313, and in one embodiment, the drain strainer 8 is installed in the drain hole 313 in an interference manner.

Further, the distance between the top surface of the sewage discharge filter screen and the top edge of the sewage discharge hole is not less than 3 mm. When the material fell on scraper blade body 31, in the bold material was difficult for getting into blowdown hole 313, can reduce the bold material and directly impact blowdown filter screen 8, reduce blowdown filter screen 8 and damage. In addition, when spraying the blowdown filter screen 8, the rivers of part bounce-back receive the restriction of blowdown hole 313 pore wall can flow to blowdown filter screen 8 once more, and then flow to in the installation cavity 3212 in order to dilute impurity to improve the effect of washing impurity. Moreover, the sewage discharge filter screen 8 is closer to the sewage outlet 3211, so that the stroke of impurities flowing out of the sewage discharge filter screen 8 along with water flow can be shortened, the blockage of the impurities is reduced, and the sewage discharge efficiency is improved.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art to which the present application pertains. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A scraper conveyor with spray means, comprising:

a material conveying groove;

the annular chain can move circularly relative to the material conveying groove;

the scraper comprises a scraper body and a rolling body, the scraper body is arranged on the annular chain, a fixing hole and a sewage discharge hole which are communicated with each other are formed in the scraper body, and the fixing hole and the sewage discharge hole penetrate through the scraper body; the rolling body is arranged in the fixing hole and comprises a shell and a ball, an installation cavity is formed in the shell, the ball is arranged in the installation cavity, part of the ball extends out of the bottom side of the scraper body, and the shell is provided with a sewage outlet communicated with the installation cavity and the sewage outlet;

the spraying device is arranged at the machine head and/or the machine tail, the machine head and/or the machine tail is provided with a sewage disposal area, the spraying device comprises a water outlet pipe arranged at the sewage disposal area and a spray head arranged at the water outlet pipe, a water outlet hole is formed in the pipe wall of the water outlet pipe, the spray head forms a water spraying channel communicated with the water outlet hole, and the sewage disposal area and the moving area of the sewage disposal hole are at least partially overlapped.

2. The scraper conveyor with a spraying device as claimed in claim 1, wherein the outlet pipe spans the dirt cleaning area, and a plurality of outlet holes are arranged on the outlet pipe at intervals so as to install a plurality of spray heads.

3. The scraper conveyor with spray assembly of claim 2, wherein the decontamination region comprises a partial conveying zone in which the scraper moves in a straight line, a transition zone in which the scraper moves in an arc, and a turn-over zone in which the scraper moves in a substantially vertical direction, the transition zone being located between the conveying zone and the turn-over zone; in the plurality of spray heads, at least one spray head is positioned in the conveying area, at least one spray head is positioned in the transition area, and at least one spray head is positioned in the turnover area.

4. The scraper conveyor with spraying apparatus as claimed in claim 3, wherein the water outlet pipe is an arc-shaped water outlet pipe, and the arc-shaped water outlet pipe extends from the conveying area to the turning area.

5. The scraper conveyor with spraying apparatus as claimed in any one of claims 1 to 4, wherein said outlet pipe is provided at an edge of said dirt-removing area and extends along the edge of said dirt-removing area, and at least one of said nozzles extends obliquely toward said scraper located at said dirt-removing area.

6. The scraper conveyor with spraying device as claimed in claim 5, wherein the angle between the extension direction of the spray head and the horizontal direction is α, 45 ° ≦ α ≦ 55 °.

7. The scraper conveyor with spraying apparatus according to claim 1, wherein a side of the spray head away from the water outlet hole is formed with a guide groove that constitutes a part of the water spray passage, the guide groove extending in a radial direction of the spray head.

8. The scraper conveyor with the spraying device as claimed in claim 1, wherein the spraying device further comprises a connecting piece, the connecting piece comprises a connecting ring sleeved on the water outlet pipe and a connecting column formed on the side wall of the connecting ring, and the connecting column extends in a direction away from the water outlet pipe.

9. The scraper conveyor with spray assembly of claim 1 further comprising a blowdown screen mounted at the blowdown port, the blowdown screen separating the blowdown port and the scraper body exterior side.

10. The scraper conveyor with spray assembly of claim 9, wherein the distance between the top surface of the drain screen and the top edge of the drain hole is no less than 3 mm.