Automatic water spraying device for sculping screen

Abstract

The utility model is suitable for the technical field of sculping screens, and provides an automatic sculping screen water spraying device which comprises a sculping screen body. The sieve plate frame is fixed on the inner side wall of the sculping sieve body through bolts; the sieve plate is fixed on the inner side wall of the sieve plate frame through bolts; the water retaining dam is welded at the top of the sieve plate frame close to one side of the sieve plate; the high-pressure water pump is arranged on one side of the sculping screen body; the water conveying pipe is fixed at the output end of the high-pressure water pump through a flange; the shunting pipe is welded at one end of the water conveying pipe; the water spraying pipe is welded on the outer side wall of the flow dividing pipe; the water spraying position and angle are impacted on the connecting position of the water retaining dam and the sieve plate frame, under the condition that the water spraying amount is not changed, sprayed water is concentrated to the water retaining dam and the sieve plate frame to achieve re-wetting, the sprayed water and materials on the sieve are fully mixed, then the materials penetrate through the sieve in a concentrated mode, media are brought below the sieve, and the water spraying amount is reduced on the contrary while it is guaranteed that the material carrying medium is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of media stripping screens, and in particular relates to an automatic water spraying device for media stripping screens. Background Art

[0002] At present, many coal preparation plants adopt the heavy medium coal preparation method, and the heavy medium basically adopts magnetite powder (medium powder). Water, coal slime and medium powder are mixed into qualified medium with appropriate density, and the three products of clean coal, medium coal and gangue are selected through corresponding sorting equipment. The medium is removed through arc screen and de-mediating screen, and the material on the screen and the medium are separated by spraying water on the de-mediating screen. The medium enters under the screen with water to form dilute medium. The dilute medium after de-mediating is recovered by subsequent magnetic separator and enters into qualified medium barrel for repeated recycling, and the tailings enter subsequent operations.

[0003] However, in the medium separation operation, water spraying is the most important factor. When the water spraying pressure is high and the water spraying volume is large, the medium separation effect of the medium separation screen is good and the medium content of the product is small, but the load of the magnetic separator is increased for no reason, which is not good for the subsequent magnetic separation operation. When the water spraying pressure is low and the water spraying volume is small, the medium separation effect of the medium separation screen is poor and the medium content of the product is large, but the load of the magnetic separator is reduced, which is good for the magnetic separation operation.

[0004] Therefore, there is a lack of a structure in which the water can be concentrated and mixed with the material and pass through the screen in time while the overall water volume remains unchanged when spraying water on the de-mediating screen. Therefore, an automatic de-mediating screen water spraying device is proposed. Utility Model Content

[0005] The utility model provides an automatic water spraying device for removing media from a screen, aiming to solve the above-mentioned problem.

[0006] The utility model is realized in this way: an automatic media-removing screen water spraying device comprises: a media-removing screen body; a screen plate frame fixed to the inner side wall of the media-removing screen body by bolts; a screen plate fixed to the inner side wall of the screen plate frame by bolts; a water retaining dam welded to the top of the screen plate frame at a position close to one side of the screen plate; a high-pressure water pump arranged at one side of the media-removing screen body; a water delivery pipe fixed to the output end of the high-pressure water pump by a flange; a diversion pipe welded to one end of the water delivery pipe; a water spraying pipe welded to the outer side wall of the diversion pipe; a water spraying hole opened on the outer side wall of the water spraying pipe, the angle between the water spraying hole and the horizontal plane is 45 degrees, and the water sprayed from the water spraying hole impacts the connection between the water retaining dam and the screen plate frame.

[0007] Preferably, the top of the sieve plate is provided with sieve holes, and the sieve plate frame is a frame structure.

[0008] Preferably, the water retaining dam and the sieve plate frame are perpendicular to each other.

[0009] Preferably, the input end of the high-pressure water pump is connected to the water storage structure of the external water circulation system.

[0010] Preferably, the water flow sprayed from the water spray hole and the material moving on the screen plate just move to the frame of the screen plate.

[0011] Preferably, the water spraying angle of the water spray hole is 45 degrees in the reverse direction.

[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0013] By adjusting the water spraying position and angle to impact the connection between the dam and the screen frame, while ensuring that the water spraying amount remains unchanged, the water spraying is concentrated on the dam and the screen frame to achieve re-wetting, the sprayed water is fully mixed with the material on the screen, and then concentrated through the screen to bring the medium under the screen, ensuring that the material carrying medium is reduced while the water spraying amount is reduced, thereby reducing the circulating water volume of the system, achieving the effect of energy saving and consumption reduction, and also reducing the treatment compliance of the coal slurry water system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the water spray pipe structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the water spray position angle of the utility model;

[0017] Figure 4 This utility model Figure 1 Enlarged view of point A in .

[0018] In the figure: 1. De-mediating screen body; 2. Screen plate frame; 3. Screen plate; 4. Water retaining dam; 5. High-pressure water pump; 6. Water delivery pipe; 7. Diversion pipe; 8. Water spray pipe; 9. Water spray hole. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] The utility model provides an automatic water spraying device for removing the media screen, such as Figure 1-4 As shown, a de-mediating screen body 1 is provided, a sieve plate frame 2 is fixedly connected to an inner wall of one side of the de-mediating screen body 1 by bolts, a sieve plate 3 is fixedly connected to an inner wall of one side of the sieve plate frame 2 by bolts, a sieve hole is opened on the top of the sieve plate 3, the sieve plate frame 2 is a frame structure, a dam 4 is welded to the top of the sieve plate frame 2 at a position close to one side of the sieve plate 3, a high-pressure water pump 5 is arranged at a position on one side of the de-mediating screen body 1, an input end of the high-pressure water pump 5 is connected and communicated with a water storage structure of an external water circulation system, an output end of the high-pressure water pump 5 is fixedly connected to a water pipe 6 through a flange, a diversion pipe 7 is welded to one end of the water pipe 6, a water spray pipe 8 is welded to the outer side wall of the diversion pipe 7, a water spray hole 9 is opened on the outer side wall of one side of the water spray pipe 8 at a position close to the upper side of the water dam 4, the angle between the water spray hole 9 and the horizontal plane is 45 degrees, and the water sprayed from the water spray hole 9 impacts the connection between the water dam 4 and the sieve plate frame 2.

[0022] It should be noted that, since it is difficult for the existing de-mediating screen to achieve concentrated water mixing with the material and timely screen penetration when the overall water volume remains unchanged during the water spraying, the present embodiment adjusts the water spraying position and angle to impact the connection between the dam 4 and the sieve plate frame 2, while ensuring that the water spraying volume remains unchanged, the water spraying is concentrated on the dam 4 and the sieve plate frame 2 to achieve re-wetting, the sprayed water is fully mixed with the material on the screen, and then concentrated to screen, bringing the medium under the screen, ensuring that the material carrying the medium is reduced while the water spraying volume is reduced, thereby reducing the circulating water volume of the system, achieving energy saving and consumption reduction, and also reducing the treatment compliance of the coal slurry water system.

[0023] Specifically, in this embodiment, the scheme mainly includes a sieve plate frame 2, a water retaining dam 4 and a water spray pipe 8. When in use, the water spray pipe 8 is arranged on the upper side of the connection between the water retaining dam 4 and the sieve plate frame 2, and the water flow direction of the water spray hole 9 on the water spray pipe 8 is made (see the specification). Figure 3The direction of the arrow in the middle is toward the connection between the water retaining dam 4 and the sieve plate frame 2, and the high-pressure water pump 5 draws external water into the water delivery pipe 6. Under the guidance of the water delivery pipe 6, the diversion pipe 7 and the water spraying pipe 8, the water flows out through the water spraying holes 9 to transport the materials to the sieve plate 3 inside the de-mediating screen body 1. The vibration motor on the de-mediating screen body 1 works to vibrate it, and the materials on the sieve plate 3 are transported and moved to one side of the water retaining dam 4. The water retaining dam 4 can prolong the movement time of the materials on the sieve plate 3 on the one hand, and on the other hand On the one hand, it can roll the material to ensure that the material that has been preliminarily classified at the bottom layer can move to the surface when passing through the water retaining dam 4, and the unclassified material on the surface moves to the bottom layer, thereby improving the classification efficiency. The water flow impacts the connection between the water retaining dam 4 and the screen plate frame 2, and the water flow and the material moving on the screen plate 3 just move to the screen plate frame 2. Since the water is sprayed behind the water retaining dam 4, the material here is relatively loose and is wetted again. The water spray and the material on the screen plate 3 are fully mixed, and then concentrated through the screen plate 3 to bring the medium under the screen plate 3.

[0024] In a further preferred embodiment of the present invention, Figure 1 , Figure 2 and Figure 4 As shown, the water retaining dam 4 and the screen plate frame 2 are perpendicular to each other.

[0025] In this embodiment, the water retaining dam 4 can prolong the movement time of the material on the screen plate 3, and on the other hand, it can roll the material, ensuring that the material that has been preliminarily classified at the bottom layer can move to the surface when passing through the water retaining dam 4, and the unclassified material on the surface moves to the bottom layer, thereby improving the classification efficiency.

[0026] In a further preferred embodiment of the present invention, Figure 3 As shown, the water spraying angle of the water spraying hole 9 is 45 degrees in the reverse direction, and the water flow sprayed from the water spraying hole 9 and the materials moving on the screen plate 3 just move to the screen plate frame 2.

[0027] In this embodiment, the water flow can be sprayed behind the water retaining dam 4, where the materials are relatively loose, thereby ensuring that the materials and water are fully mixed.

[0028] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0029] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0030] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0031] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. An automatic water spraying device for removing media from screens, characterized in that: include: The de-mesh screen body (1); A screen plate frame (2) fixed to the inner side wall of the media stripping screen body (1) by means of bolts; A sieve plate (3) fixed to the inner side wall of the sieve plate frame (2) by means of bolts; A water retaining dam (4) welded to the top of the sieve plate frame (2) at a position close to one side of the sieve plate (3); a high-pressure water pump (5) disposed at one side of the de-mediating screen body (1); A water delivery pipe (6) fixed to the output end of the high-pressure water pump (5) via a flange; A diverter pipe (7) welded to one end of the water delivery pipe (6); A water spray pipe (8) welded to the outer side wall of the diverter pipe (7); A water spray hole (9) is provided on the outer side wall of the water spray pipe (8), the angle between the water spray hole (9) and the horizontal plane is 45 degrees, and water sprayed from the water spray hole (9) impacts the connection between the water retaining dam (4) and the screen plate frame (2).

2. The automatic water spraying device for removing media from the screen as claimed in claim 1, characterized in that: The top of the sieve plate (3) is provided with sieve holes, and the sieve plate frame (2) is a frame structure.

3. The automatic water spraying device for removing media from the screen as claimed in claim 1, characterized in that: The water retaining dam (4) and the screen plate frame (2) are perpendicular to each other.

4. The automatic water spraying device for removing media from the screen as claimed in claim 1, characterized in that: The input end of the high-pressure water pump (5) is connected to and communicates with a water storage structure of an external water circulation system.

5. The automatic water spraying device for removing media from the screen as claimed in claim 1, characterized in that: The water flow sprayed from the water spray hole (9) and the material moving on the screen plate (3) just move to the screen plate frame (2).

6. The automatic water spraying device for removing media from the screen as claimed in claim 1, characterized in that: The water spraying angle of the water spraying hole (9) is 45 degrees in the reverse direction.

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