Anti-blocking sprayer, anti-blocking water spraying device and application of anti-blocking sprayer and anti-blocking water spraying device in coal washing

Abstract

The invention provides an anti-blocking sprayer, an anti-blocking water spraying device and application in coal washing, the anti-blocking sprayer comprises a spraying pipe and a flow guide plate, one end of the spraying pipe is detachably connected to a branch water spraying pipeline, the flow guide plate is of a bent structure, and the flow guide plate is fixedly connected to one side of a nozzle and arranged in the spraying direction of the nozzle; the flow guide plate is bent downwards towards the direction of the nozzle, and the width of the flow guide plate is gradually increased from top to bottom. During spraying, a fan-shaped fog curtain can be formed, the spraying coverage area is enlarged, and the blocking phenomenon is prevented. The structure is simple and the production cost is saved. Maintenance is simple, and practicability is high. The anti-blocking spray head is used for coal washing and medium drainage, the coal washing effect can be improved, and the whole section of the sieve can be covered with fewer branch water spraying pipelines.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying equipment, and particularly to an anti-clogging nozzle, an anti-clogging water spraying device and an application in coal washing. Background Art

[0002] The vibrating screen is the core washing equipment in the coal preparation plant. During the washing process, it is necessary to ensure the medium separation and dehydration effect of the vibrating screen, so as to ensure good medium recovery efficiency, and finally ensure that the washing quality meets the requirements and prevent the loss of medium such as running and leaking. There are many factors for the normal medium separation of the vibrating screen, including the selection of the exciting force of the vibrator, the selection of the screen plate slot, the selection of the processing capacity of the screen, the water spraying effect of the screen nozzles, etc. But the most important is the water spraying effect of the screen nozzles, which is the decisive factor to ensure whether the medium can be recovered by the screen. Because only by ensuring good water spraying of the vibrating screen can the medium on the lump coal or gangue be effectively cleaned and then recovered into the combined medium tank and the dilute medium tank. If the medium is not recovered under the screen in time by spraying water, a large amount of medium will be mixed into the gangue or lump coal, resulting in a large amount of medium loss and financial losses. Commonly used nozzles for coal washing are plastic nozzles or copper nozzles. Due to the reason that the water quality for coal washing contains coal slime, these two types of nozzles are very easy to be blocked or damaged, resulting in a decline in washing quality.

[0003] Commonly used water spraying devices for coal washing and medium separation include copper nozzle type water spraying devices and plastic nozzle type water spraying devices. Their characteristics and existing disadvantages are as follows:

[0004] 1. Copper nozzle type water spraying device: The nozzles for such coal washing generally have a specification of DN50 type, which can meet the daily production requirements and operate relatively stably. However, due to its copper material, the manufacturing cost is high, the procurement cycle is long, and it is very easy to be lost. Therefore, such nozzles are generally not used in general coal preparation plants. At the same time, such nozzles are easy to be blocked, and it is necessary to clean the nozzles irregularly during production. If the water quality is poor during production, it is very easy to affect the coal washing effect and cause the loss and waste of medium.

[0005] 2. Plastic nozzle type water spraying device. This type of water spraying device has the advantage of not being easily blocked, and has specifications such as fan-shaped and duckbill-shaped. The specifications of such nozzles are small, generally made of small nozzles such as DN15 and DN20. In order to ensure the medium separation effect of the entire cross-section of the screen, multiple branch pipes need to be made to cover a certain transverse cross-section of the entire screen. Therefore, there are many branch pipes (usually 10 are required), and the processing cost of the entire water spraying device is large; at the same time, due to the low hardness of the plastic, the wear is relatively serious, so the replacement is relatively frequent, and the labor intensity of workers is large.

[0006] The above common nozzles have their own advantages and disadvantages. By learning from their respective advantages, it is very necessary to invent a nozzle with low manufacturing cost and not easily blocked to solve the problems of high manufacturing cost and large maintenance volume. Summary of the Invention

[0007] The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, embodiments of the present invention provide an anti-clogging nozzle, an anti-clogging water spraying device, and an application in coal washing, which expand the spray coverage area and avoid the situation of nozzle clogging.

[0008] An embodiment of the present invention on one hand provides an anti-clogging nozzle, including: a spray pipe and a deflector. The spray pipe has a first end and a second end along the axial direction. The first end of the spray pipe is detachably connected to a branch water spraying pipe, and the second end of the spray pipe has a spray port. The deflector has a curved structure, and the deflector is fixedly connected to one side of the spray port and is arranged along the direction of spraying from the spray port. The deflector bends downward in the direction towards the spray port, and the width of the deflector gradually increases from top to bottom.

[0009] In some embodiments, the deflector includes a first straight plate section, a second straight plate section, and a bending section. The second straight plate section is located below the first straight plate section, and the bending section is connected between the first straight plate section and the second straight plate section. The first straight plate section is fixedly connected to one side of the spray port and is arranged along the direction of spraying from the spray port, and the bending section bends downward in the direction towards the spray port.

[0010] In some embodiments, the bending section is an arc surface structure.

[0011] In some embodiments, a guiding block is fixedly connected to the inner wall of the spray pipe near the spray port. The guiding block is arranged on the side away from the deflector. The guiding block is a wedge-shaped block with a narrower upper part and a wider lower part, so that the diameter of the spray port is smaller than the inner diameter of the spray pipe. The guiding block has an inclined guiding surface, so that water flows towards the deflector through the guiding surface.

[0012] In some embodiments, the longitudinal section of the guiding block is a right triangle. The arc-shaped side wall of the guiding block is fixedly attached to the inner wall of the spray pipe, and the lower end surface of the guiding block is flush with the lower end surface of the spray port.

[0013] In some embodiments, the materials of the spray pipe, the deflector, and the guiding block are all rust-proof materials.

[0014] In some embodiments, the projections of the deflector in the vertical direction and in the horizontal direction are both trapezoidal structures.

[0015] In some embodiments, the diameter of the spray port is not less than 20 mm.

[0016] In a second aspect embodiment of the present invention, a clogging prevention water spraying device is proposed, which includes the above-mentioned clogging prevention nozzle, and also includes a main water spraying pipeline and branch water spraying pipelines. There are several branch water spraying pipelines, which are respectively connected to the main water spraying pipeline in parallel. Adjacent branch water spraying pipelines are parallel to each other. Each end of the branch water spraying pipeline is connected to a clogging prevention nozzle, and the clogging prevention nozzle is threadedly connected to the branch water spraying pipeline.

[0017] In a third aspect embodiment of the present invention, an application of the above-mentioned clogging prevention water spraying device in coal washing is proposed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above-mentioned and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings.

[0019] Wherein:

[0020] Figure 1 is a schematic structural diagram of the clogging prevention nozzle in the embodiment of the present invention;

[0021] Figure 2 is Figure 1 the left view of

[0022] Figure 3 is Figure 1 the schematic structural diagram from the top view angle of

[0023] Figure 4 is Figure 2 the schematic structural diagram of the diversion plate in being an arc structure;

[0024] Figure 5 is Figure 2 the schematic structural diagram of the diversion plate in being a bending structure formed by two straight plate segments;

[0025] Figure 6 is the schematic structural diagram of the clogging prevention water spraying device in the embodiment of the present invention;

[0026] Reference Signs:

[0027] 1, main water spraying pipeline; 2, branch water spraying pipeline; 3, control valve; 4, clogging prevention nozzle; 41, spray pipe; 42, diversion plate; 421, first straight plate segment; 422, bending segment; 423, second straight plate segment; 43, guiding block; 44, spray opening. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0029] The anti-blocking nozzle, anti-blocking water spraying device of the embodiments of the present invention and their applications in coal washing will be described below with reference to the accompanying drawings.

[0030] As Figures 1-3 shown, on the one hand, an embodiment of the present invention provides an anti-blocking nozzle, including: a spray pipe 41 and a deflector 42. The spray pipe 41 has a first end and a second end along the axial direction. The first end of the spray pipe 41 is detachably connected to the branch water spraying pipe 2, and the second end of the spray pipe 41 has a spray opening 44; the deflector 42 has a curved structure, the deflector 42 is fixedly connected to one side of the spray opening 44 and is arranged along the spraying direction of the spray opening 44. The deflector 42 is bent downward in the direction towards the spray opening 44, and the width of the deflector 42 gradually increases from top to bottom.

[0031] In the embodiment of the present invention, by arranging the deflector 42 with a curved shape and gradually increasing width at the spray opening 44, a fan-shaped mist curtain can be formed during spraying, expanding the coverage area of spraying. The structure is simple, and it can be processed by using simple steel pipes and steel plates, saving production costs. The maintenance is simple. By using simple tools such as pliers, the angle or bending degree of the deflector 42 can be adjusted, thereby changing the spraying area, and the damaged anti-blocking nozzle can be quickly replaced. It has strong practicability.

[0032] Furthermore, the deflector 42 can be an arc structure, as Figure 4 shown; it can also be a bending structure formed by two straight plate segments, as Figure 5 shown; it can also be a curved structure formed by two straight plate segments and an arc segment, as Figure 2 shown.

[0033] In some embodiments, as Figures 1-3 shown, the deflector 42 includes a first straight plate segment 421, a second straight plate segment 423 and a bending segment 422. The second straight plate segment 423 is located below the first straight plate segment 421, and the bending segment 422 is connected between the first straight plate segment 421 and the second straight plate segment 423. The first straight plate segment 421 is fixedly connected to one side of the spray opening 44 and is arranged along the spraying direction of the spray opening 44, and the bending segment 422 is bent downward in the direction towards the spray opening 44.

[0034] Furthermore, the included angle between the first straight plate segment 421 and the second straight plate segment 423 is an obtuse angle.

[0035] In some embodiments, as Figure 2 shown, the bending segment 422 is an arc surface structure. This enables the water flow to smoothly transition at the arc-shaped bending segment 422, reducing the impact on the second straight plate segment 423 and the consumption of the water flow impact force, thereby increasing the impact force on the spraying target.

[0036] In some embodiments, as Figure 2 , 3As shown, a guiding block 43 is fixedly connected to the inner wall of the spray pipe 41 near the spray nozzle 44. The guiding block 43 is arranged on the side away from the flow guiding plate 42. The guiding block 43 is a wedge-shaped block with a narrower upper part and a wider lower part, so that the diameter of the spray nozzle 44 is smaller than the inner diameter of the spray pipe 41. The guiding block 43 has an inclined guiding surface, so that water flows to the flow guiding plate 42 through the guiding surface.

[0037] By providing the guiding block 43 to reduce the diameter of the spray nozzle 44, the instantaneous flow rate of water at the spray nozzle 44 can be increased, thereby improving the spraying effect.

[0038] In some embodiments, as Figure 2 shown, the longitudinal section of the guiding block 43 is a right triangle. The arc-shaped side wall of the guiding block 43 is fixedly attached to the inner wall of the spray pipe 41. The lower end surface of the guiding block 43 is flush with the lower end surface of the spray nozzle 44.

[0039] In some embodiments, the materials of the spray pipe 41, the flow guiding plate 42 and the guiding block 43 are all rust-proof materials, which can prevent rusting and extend the service life.

[0040] Furthermore, the materials of the spray pipe 41, the flow guiding plate 42 and the guiding block 43 can be stainless steel, galvanized or other rust-proof materials.

[0041] In some embodiments, as Figure 1 、 3 shown, the projections of the flow guiding plate 42 in the vertical direction and in the horizontal direction are both trapezoidal structures.

[0042] In some embodiments, the diameter of the spray nozzle 44 is not less than 20 mm, which is larger than the inner diameter of a conventional spray head, completely eliminating the occurrence of blockage of the spray nozzle 44 caused by poor water quality.

[0043] As Figure 6 shown, an anti-blocking water spraying device according to the second aspect of the present invention includes the above anti-blocking spray head 4, and also includes a main water spraying pipe 1 and branch water spraying pipes 2. There are several branch water spraying pipes 2, which are respectively connected in parallel to the main water spraying pipe 1. Adjacent branch water spraying pipes 2 are parallel to each other. The end of each branch water spraying pipe 2 is respectively connected to an anti-blocking spray head 4. The anti-blocking spray head 4 and the branch water spraying pipe 2 are connected by threads.

[0044] Using the anti-blocking spray head 4 in the water spraying device can expand the spraying coverage area and prevent blockage. The structure is simple, easy to process, saving production costs. The maintenance is simple. The angle or bending degree of the flow guiding plate 42 can be adjusted by using simple tools such as pliers, thereby changing the spraying area, and the damaged anti-blocking spray head can be quickly replaced. It has strong practicability.

[0045] Further, a control valve 3 is connected to the main water spraying pipe 1 to control the on / off and flow rate of the main water spraying pipe 1.

[0046] Further, the main water spraying pipe 1 and the branch water spraying pipes 2 are both made of stainless steel or galvanized materials, which can prevent the pipes from rusting, reduce the frequency of pipe replacement caused by rust, and extend the service life.

[0047] Further, the arrangement form of the branch water spraying pipes 2 can be arranged side by side or in a circular arrangement.

[0048] Further, the number of the branch water spraying pipes 2 is determined according to the width of the sieve and the actual situation at the production site. For example, if the width of the sieve is 3 meters, 6 branch water spraying pipes 2 are arranged side by side.

[0049] An embodiment of the third aspect of the present invention provides an application of the above anti-blocking water spraying device in coal washing.

[0050] Applying the above anti-blocking water spraying device to coal washing and desliming can improve the coal washing effect. With fewer branch water spraying pipes 2, the entire cross-section of the sieve can be covered. It can prevent blockage. The structure is simple, easy to process, and can save production costs. The maintenance is simple. The angle or bending degree of the deflector 42 can be adjusted by using simple tools such as pliers, thereby changing the spraying area, and the damaged anti-blocking nozzles can be quickly replaced. It has strong practicability.

[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0052] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0053] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0055] In the present invention, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0056] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A blockage-proof nozzle, characterized in that: include: A spray pipe, wherein the spray pipe has a first end and a second end in the axial direction, the first end of the spray pipe is detachably connected to the branch water spray pipe, and the second end of the spray pipe has a nozzle; The guide plate has a curved structure, is fixedly connected to one side of the nozzle and is arranged along the spraying direction of the nozzle, is bent downward toward the nozzle, and has a width that gradually increases from top to bottom.

2. The anti-clogging nozzle according to claim 1, characterized in that: The guide plate includes a first straight plate section, a second straight plate section and a bent section, the second straight plate section is located below the first straight plate section, the bent section is connected between the first straight plate section and the second straight plate section, the first straight plate section is fixedly connected to one side of the nozzle and is arranged along the spraying direction of the nozzle, and the bent section is bent downward toward the direction of the nozzle.

3. The anti-clogging nozzle according to claim 2, characterized in that: The bending section is a curved surface structure.

4. The anti-clogging nozzle according to claim 1, characterized in that: The inner wall of the spray pipe is fixedly connected with a guide block at a position close to the nozzle, and the guide block is arranged on a side away from the guide plate. The guide block is a wedge-shaped block that is narrow at the top and wide at the bottom, so that the diameter of the nozzle is smaller than the inner diameter of the spray pipe. The guide block has an inclined guide surface so that water flows toward the guide plate through the guide surface.

5. The anti-clogging nozzle according to claim 4, characterized in that: The longitudinal section of the guide block is a right triangle, the arc-shaped side wall of the guide block is fixedly attached to the inner wall of the spray pipe, and the lower end surface of the guide block is flush with the lower end surface of the nozzle.

6. The anti-clogging nozzle according to claim 4, characterized in that: The materials of the spray pipe, the guide plate and the guide block are all rust-proof materials.

7. The anti-clogging nozzle according to claim 1, characterized in that: The projection of the guide plate in the vertical direction and in the horizontal direction both present a trapezoidal structure.

8. The anti-clogging nozzle according to claim 1, characterized in that: The diameter of the nozzle is not less than 20 mm.

9. An anti-blocking water spray device, characterized in that: It comprises the anti-blocking nozzle as described in any one of claims 1 to 8, and also comprises a main water spray pipe and a branch water spray pipe, wherein a plurality of branch water spray pipes are provided and are respectively connected in parallel to the main water spray pipe, and two adjacent branch water spray pipes are parallel to each other, and an anti-blocking nozzle is respectively connected to the end of each branch water spray pipe, and the anti-blocking nozzle is connected to the branch water spray pipe by a threaded connection.

10. Use of the anti-blocking water spraying device according to claim 9 in coal washing.

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