Integrated wet-type dust-removal anti-explosion shot blasting machine

Abstract

The invention discloses an integrated wet-type dust-removal explosion-proof shot blasting machine, and relates to the technical field of shot blasting and dust removal, the integrated wet-type dust-removal explosion-proof shot blasting machine comprises a dust falling pipe arranged behind an air outlet of a shot blasting chamber, a spraying system is arranged at the top of the dust falling pipe, a mounting disc is arranged below the spraying system in the dust falling pipe, and a plurality of vertically through accommodating grooves are formed in the mounting disc; a containing groove is formed in the spraying system, a ball body is arranged in the containing groove, the outer diameter of the ball body is smaller than the inner diameter of the containing groove, a gap between the ball body and the containing groove forms an impurity removal channel, and the water mist net is used for stopping impurities. The liquid drops can be attached to form a water mist net in the impurity removal channel, and compared with a suspended state of spraying water mist in a standing state, dust and impurities can be captured for a long time, and a large amount of space and a large amount of water mist sprayed by a water circulation system are not needed to improve the capturing effect in quantity.

Description

Technical Field

[0001] The invention relates to the technical field of shot blasting and dust removal, in particular to an integrated wet dust removal and explosion-proof shot blasting machine. Background Art

[0002] Shot blasting machines are an important industrial equipment widely used in metal surface treatment, rust removal, descaling and strengthening. The core principle is to use high-speed shot beams to impact the surface of the workpiece to achieve the purpose of cleaning or modification. However, traditional shot blasting machines have long faced a major technical pain point in practical applications: insufficient dust pollution control efficiency.

[0003] In terms of dust treatment, the current mainstream technology mostly uses dry dust removal systems (such as bag dust removal or cyclone separation), but its capture efficiency for micron and submicron dust is limited, especially when dealing with high humidity or sticky dust, the filter is prone to clogging, resulting in frequent system maintenance and rising operating costs. Although some improved equipment has tried to introduce wet dust removal technology (such as water curtain spray or atomization dust reduction), these structures have a large space occupancy rate, and the traditional wet dust removal system consumes a lot of water. Water curtain spray and atomization need to be continuous. Although the dust reduction effect is obvious, the overall capture efficiency of the spray is low, and it wins by quantity, thus causing a large amount of sewage. These sewage need to be filtered and treated before they can be circulated, so a large water circulation system is required. To this end, we propose an integrated wet dust removal explosion-proof shot blasting machine. Summary of the invention

[0004] The object of the present invention is to provide an integrated wet dust removal and explosion-proof shot blasting machine to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an integrated wet dust removal and explosion-proof shot blasting machine, comprising a dust reduction pipe arranged behind the air outlet of the shot blasting chamber, the bottom of the dust reduction pipe is an air inlet, the top of the dust reduction pipe is an air outlet, a spray system is arranged on the top of the dust reduction pipe, and a mounting plate is arranged in the dust reduction pipe below the spray system, a plurality of receiving grooves which pass through from top to bottom are opened on the mounting plate, the inner wall of the receiving groove is a spherical surface, a sphere is arranged in the receiving groove, the outer diameter of the sphere is smaller than the inner diameter of the receiving groove, and the outer diameter of the sphere is larger than the opening diameter at the openings at both ends of the receiving groove, the gap between the sphere and the receiving groove forms an impurity removal channel, the spray system generates water droplets which adhere to the surface of the sphere and the receiving groove to form an interlaced water mist net and do not converge into a flow, the unremoved high-pressure airflow is agitated in the impurity removal channel and causes the sphere to move and continuously change the water mist net structure in the impurity removal channel, and the water mist net intercepts impurities.

[0006] Preferably, the upper and lower ends of the sphere along the axial direction of the dust suppression pipe are fixed by limiting ropes. Under the action of high-pressure gas, the sphere swings in the accommodating cavity to change the staggered arrangement of the water mist net in the impurity removal channel.

[0007] Preferably, a plurality of grooves recessed towards the center of the sphere are provided on the surface of the sphere. Under the action of high-pressure air flow, the grooves cause the sphere to rotate and roll in the receiving groove, and during the rolling process, the droplets in the impurity removal channel sputter to capture dust.

[0008] Preferably, a water storage material is provided on the surface of the non-grooved area of the sphere, and droplets are generated on the surface of the receiving groove when the sphere collides with the inner wall of the receiving groove.

[0009] Preferably, the inner wall surface of the receiving groove is subjected to frosted treatment so that liquid water forms droplets on its surface.

[0010] Preferably, a droplet groove for forming single droplets is provided on the inner wall of the receiving groove.

[0011] Preferably, the opening of the droplet groove faces downward.

[0012] Preferably, both the surface of the sphere and the inner wall of the receiving groove are made of hydrophilic materials.

[0013] Preferably, the unilateral gap between the sphere and the inner wall of the receiving groove is less than or equal to the radius of the droplets in the droplet groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By constructing a spraying system and an impurity removal structure of the sphere and the receiving groove located under the spraying system, the present invention can make droplets adhere to form a water mist net in the impurity removal channel, and its residence state relative to the standing spraying water mist can achieve long-term capture of dust impurities without the need for a large amount of space and a water circulation system to spray water mist to improve the capture effect by quantity; The grooves on the sphere in the present invention can make the sphere rotate and create a more complex impurity removal channel environment, making the air flow more turbulent, and more dust and impurities carried therein come into contact with the droplets and are captured, thereby efficiently removing impurities; The water storage material in the present invention can keep a stable humid environment in the impurity removal channel all the time, supplement the droplets on the surface after impact, and thus keep the dust capture process stable all the time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the axial end face structure of the mounting plate of the present invention; Figure 3 is a schematic diagram of the structure in the impurity removal channel when the sphere moves upward; Figure 4 is Figure 3 a schematic diagram of partial movement trajectories of the air flow and impurities in the impurity removal channel in the Figure 5Schematic diagram of the state where the sphere is at the lowest position in the receiving groove; Figure 6 Schematic diagram of the static state of the sphere under the action of the limiting rope; Figure 7 Schematic diagram of the moving state of the sphere under the action of the limiting rope; Figure 8 Schematic diagram of the structure of the water mist net in the impurity removal channel; Figure 9 Schematic diagram of the state process of the sphere fitting against the inner wall of the receiving groove; Figure 10 Schematic diagram of the state process of the sphere being driven away from the inner wall of the receiving groove; Figure 11 Schematic diagram of one implementation state of the droplet groove of the receiving groove; Figure 12 To be different from Figure 11 Another implementation state diagram of the droplet groove of the receiving groove.

[0016] In the figure: 1 - dust - settling pipe; 2 - spraying system; 3 - mounting plate; 4 - receiving groove; 5 - sphere; 6 - impurity removal channel; 7 - limiting rope; 8 - groove; 9 - water - storage material; 10 - droplet groove. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 8 , the present invention provides a technical solution: an integrated wet - type dust - removing and explosion - proof shot - blasting machine, including a dust - settling pipe 1. The dust - settling pipe 1 is arranged vertically upward. The port at its bottom is docked with the air outlet of the shot - blasting chamber of the shot - blasting machine, and the port at the top is connected to an air outlet pipe. A spraying system 2, a mounting plate 3, and a water - circulation system (not shown) are sequentially arranged from top to bottom along the axial direction of the dust - settling pipe 1. The spraying system 2 is composed of a plurality of atomizing nozzles, and the spraying system 2 sprays atomized water downward; The outer diameter of the installation disk 3 is the same as the inner diameter of the dust-removing pipe 1, and it is fixedly installed on the inner wall of the dust-removing pipe 1. The installation disk 3 is composed of two disks that are symmetrical up and down. A number of receiving grooves 4 are provided on the installation disk 3. The cross-section of the receiving groove 4 is in the shape of a wine barrel. The upper and lower ends of the receiving groove 4 are connected. The liquid water generated by the spraying system 2 enters the water circulation system through the receiving groove 4. The sphere 5 is received in the receiving groove 4. The whole sphere 5 is made of relatively light materials, that is, it can be blown by high-pressure air flow, so that the sphere 5 can move within a small range in the receiving groove 4. The outer diameter of the sphere 5 is smaller than the inner diameter of the receiving groove 4 so that the sphere 5 can move back and forth or rotate. And in order to prevent the sphere 5 from flying out, the diameters of the openings at the upper and lower ends of the receiving groove 4 (referring to the edge line diameters at the upper and lower openings) are smaller than the diameter of the sphere 5; The gap area between the outer surface of the sphere 5 and the inner surface of the receiving groove 4 is the impurity removal channel 6. The movement and rolling of the sphere 5 under the action of high-pressure air flow will continuously change the gaps in different areas of the impurity removal channel 6. The atomized droplets will adhere to the sphere 5 at the opening end of the receiving groove 4 as the sphere 5 rotates. On the other hand, the sprayed droplets will flow into the receiving groove 4. Under the collision of the sphere 5, the droplets will continuously disperse, fuse and splash, thereby turning the impurity removal channel 6 into a water mist net structure composed of droplets (as Figure 8 shown), and this environment changes continuously, causing the impurities in the air flow to agitate in the impurity removal channel 6, so that the impurities are intercepted and captured by the droplets; Specifically, the high-pressure air flow enters from the bottom of the dust-removing pipe 1, and the spraying system 2 sprays. Different from the spraying of traditional wet dust removal, the spraying system 2 in this solution is mainly to generate enough droplets in the impurity removal channel 6. Therefore, it is not necessary to generate a large amount of water mist like traditional spraying. This solution only needs to ensure that there is a certain amount of droplets in the impurity removal channel 6. And if the flow rate of the spraying system 2 is too large, it will instead cause a large amount of water to fill the impurity removal channel 6 rather than droplets. The water mist or the liquid water flowing into the impurity removal channel 6 (not filling it up in large quantities) will, under the action of the sphere 5, generate as Figure 3In the state shown, when the sphere 5 moves upward, it causes some droplets in the position below the center of the sphere to separate due to excessive gaps, while the upper part squeezes the droplets into a flattened shape. When moving in the reverse direction, the opposite occurs, with the lower part fusing and the upper part separating. Therefore, the water mist net formed by the droplets for intercepting and capturing is constantly changing, and is different from the state of the water spray generated in the air, which requires continuous large amounts of spraying to maintain. Instead, only a small amount of spraying is needed for supplementation, and because the impurity removal channel 6 is relatively narrow, the collision of impurities between the inner walls makes it easier for them to be captured by the droplets, thereby improving efficiency while reducing water consumption. After spraying, the water mist net formed by the staggered droplets in the impurity removal channel 6 is equivalent to a static water spray and can also change continuously with the movement of the sphere 5. Therefore, compared with the direct water spray method, the droplets can be used multiple times to capture impurities such as dust; Both the surface of the sphere 5 and the inner wall of the receiving groove 4 are made of hydrophilic materials. The hydrophilic material can better make the droplets adhere, reducing the possibility of their movement and mixing, and improving the stability of the water mist net.

[0019] Refer to Figure 6 and Figure 7 , as one of the embodiments for installing the sphere 5, the upper and lower vertices of the sphere 5 are fixed by the limiting ropes 7, so that the main movement mode of the sphere 5 is to sway within the horizontal position, and the movement in the up and down directions is restricted. In the initial state, as shown in Figure 6 , in the state without air flow, it is in a calm state. Droplets fill the space between the outer wall of the sphere 5 and the inner wall of the receiving groove 4, and the spacing is just right for the droplets to adhere to both sides. At the same time, due to flow control, no continuous water puddles are formed in the impurity removal channel 6. When the high-pressure air flow reaches the impurity removal channel 6, the air flow causes the sphere 5 to sway, so that the gaps in a part of the impurity removal channel 6 shrink, while the gaps in the relative part increase. The droplets in the part of the impurity removal channel 6 with shrinking gaps will fuse with each other to form a continuous sheet of liquid puddle, while in the part with expanding gaps, some droplets will break away from the inner wall of the sphere 5 or the receiving groove 4. Repeating this process continuously changes the state, and at the same time, some droplets will splash under the extrusion of the sphere 5, making the overall environment more complex and making it easier for dust to be intercepted.

[0020] Refer to Figure 4 and Figure 5 , grooves 8 are provided on the outer surface of the sphere 5. The grooves 8 are preferably hemispherical groove bodies and are evenly distributed on the surface of the sphere 5. The grooves 8 have multiple functions. Firstly, as shown in Figure 4As shown, since the groove 8 increases the surface area of the surface of the sphere 5 and forms pits on the surface, when the air flow passes through the impurity removal channel 6, the degree of air flow agitation will increase, making it more likely for dust and other impurities to be captured by the droplets. On the other hand, due to the concavity of the groove 8, it will affect the distribution of the air flow. The air flow will flow more quickly at the groove 8, thereby changing the air pressure, and when the air flow acts on the groove 8, it will cause the sphere 5 to roll and move under force, further changing the environment in the impurity removal channel 6, so that the dust has more impact processes and is thus captured by the droplets. Also, opening the groove 8 on the sphere 5 can avoid the situation where the sphere 5 is blocked. For example, Figure 5 as shown, when the sphere 5 is in contact with the bottom of the inner wall of the receiving groove 4 at the lower part, due to the surface tension of the liquid level, the sphere 5 will not move up briefly. At this time, the cleaning liquid generated by the upper spray will accumulate in the impurity removal channel 6. Because the mass of the liquid increases, the sphere 5 will be completely blocked. However, due to the setting of the groove 8, the outer wall of the sphere 5 and the inner wall of the receiving groove 4 will not be completely fitted and closed because of the groove 8, thus avoiding the problem of complete blockage.

[0021] Refer to Figure 9 and Figure 10 As shown in, when the droplets sprayed by the spraying system 2 adhere to the side wall of the sphere 5 or the receiving groove 4, during the impact process of the movement or rolling of the sphere 5, only a small amount of droplets on the surface will be splashed by the impact, and the impact position after the impact will basically form a cleared state, and only the subsequent spraying system 2 can make up for it. This is not conducive to the capture of dust. Therefore, a water storage material 9 is provided on the surface of the sphere 5 at the non-groove 8 part, such as a water-absorbing sponge or a honeycomb-shaped rubber made of a hydrophilic material. When the sphere 5 rotates to the end opening of the receiving groove 4, the liquid in the spray will directly fall on the water storage material 9 and be stored. When the sphere 5 rotates, part of it will be thrown out due to centrifugal force, and when the water storage material 9 collides with the inner wall of the receiving groove 4, the water storage material 9 will be squeezed and more liquid will splash, and when leaving, such as Figure 10 the inner wall of the receiving groove 4 will, due to the contact with the liquid on the surface of the water storage material 9 under the action of surface tension, leave some liquid on the inner wall of the receiving groove 4, thus avoiding a completely empty state and maintaining the integrity of the overall water mist net; Furthermore, to avoid the mutual contact and fusion of liquids, the inner wall surface of the receiving groove 4 is subjected to a matte treatment. The matte treatment increases the surface roughness of the inner wall of the receiving groove 4, thereby enhancing the surface tension formed by contact with the droplets and making the attachment of the droplets more stable. When there is no other external force, the droplets maintain a stable independent state with each other.

[0022] Refer to Figure 9 and Figure 10, a droplet groove 10 is formed on the inner wall of the receiving groove 4. The diameter of the droplet groove 10 is less than 1 mm. The function of the droplet groove 10 is to form stable single droplets, and then form a water mist net composed of staggered droplets. Because of the action of the droplet groove 10, the water droplets adhere more stably and are not easily moved and mixed under the action of gravity and air flow; Furthermore, the sizes of the droplet grooves 10 are different. The function of the different sizes is that adjacent single or multiple droplet grooves 10 can form one or more droplets, that is, one-to-one or multiple droplet grooves 10 form a larger droplet. In this way, the formation of droplets is irregular, and under the impact of the sphere 5, the water mist net has more possibilities, so as to better capture dust; Furthermore, because the water droplets will form turbid water droplets after capturing dust, it is easy to form dirt and adhere to the droplet groove 10, and finally cause blockage and lose its function. Therefore, the droplet groove 10 is opened in a state where the opening is inclined downward. With the impact of the sphere 5 and the replenishment of the splashing water droplets, the water droplets with dust can fall downward more easily, as Figure 11 and Figure 12 shown. The opening downward means that the lowest point of the edge line of the opening will not be higher than the lowest point of the inner wall, and as Figure 12 shown in the cross-section, in any vertical cross-section of the droplet groove 10 from the inside to the outside of the opening, the lower half decreases in height from the inside to the outside.

[0023] The unilateral gap between the sphere 5 and the inner wall of the receiving groove 4 is less than or equal to the radius of the water droplets in the droplet groove 10. Specifically, the unilateral gap is less than or equal to the diameter of the water droplets in the droplet groove 10, which can make the water droplets adhere between the side walls of the sphere 5 and the receiving groove 4, while the bilateral gap is greater than the diameter of the water droplets in the droplet groove 10, so that the water droplets can be mixed and pulled to disperse again, thus continuously forming a new water mist net structure.

[0024] Because the water mist net formed in the impurity removal channel 6 is equivalent to the water mist formed by static spraying and can be continuously changed, it can stably remove impurities in a small range, effectively reduce the space, and at the same time, because of the stagnation of the water droplets, which is equivalent to the suspended state of the water mist, a large amount of spraying is not required to form continuity, effectively reducing the water consumption of the water circulation system. Therefore, it is better used in the limited space of the shot blasting machine, and multiple groups of mounting plates 3 can be set to further improve the impurity removal efficiency; Similarly, the air flow will also pass under the spraying system 2, so there will also be an effect of spraying and removing impurities, forming two impurity removal processes.

[0025] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated wet dust removal explosion-proof shot blasting machine, characterized in that: The invention comprises a dust removal pipe (1) arranged behind the air outlet of the shot blasting chamber, the bottom of the dust removal pipe (1) is an air inlet, the top is an air outlet, a spray system (2) is arranged at the top of the dust removal pipe (1), and a mounting plate (3) is arranged below the spray system (2) in the dust removal pipe (1), a plurality of receiving grooves (4) extending vertically are arranged on the mounting plate (3), the inner wall of the receiving groove (4) is a spherical surface, a sphere (5) is arranged in the receiving groove (4), and the outer diameter of the sphere (5) is smaller than the inner diameter of the receiving groove (4). The outer diameter of the sphere (5) is larger than the opening diameter of the openings at both ends of the receiving groove (4); the gap between the sphere (5) and the receiving groove (4) forms an impurity removal channel (6); water droplets generated by the spray system (2) adhere to the surface of the sphere (5) and the receiving groove (4) to form a staggered water mist net and do not converge into a flow; the unremoved high-pressure airflow is agitated in the impurity removal channel (6) and causes the sphere (5) to move, thereby continuously changing the water mist net structure in the impurity removal channel (6); and the water mist net intercepts impurities.

2. The integrated wet dust removal and explosion-proof shot blasting machine according to claim 1, characterized in that: The upper and lower ends of the sphere (5) along the axial direction of the dust suppression pipe (1) are fixed by limiting ropes (7). Under the action of the high-pressure gas, the sphere (5) swings in the accommodating cavity to change the staggered arrangement of the water mist net in the impurity removal channel (6).

3. The integrated wet dust removal and explosion-proof shot blasting machine according to claim 1 is characterized in that: The surface of the sphere (5) is provided with a plurality of grooves (8) which are concave toward the center of the sphere. Under the action of the high-pressure airflow, the grooves (8) cause the sphere (5) to rotate and roll in the receiving groove (4). During the rolling process, droplets in the impurity removal channel (6) are splashed to capture dust.

4. The integrated wet dust removal and explosion-proof shot blasting machine according to claim 3 is characterized in that: The surface of the non-groove (8) area of ​​the sphere (5) is provided with a water storage material (9), and when the sphere (5) collides with the inner wall of the receiving groove (4), liquid droplets are generated on the surface of the receiving groove (4).

5. The integrated wet dust removal and explosion-proof shot blasting machine according to claim 4 is characterized in that: The inner wall surface of the containing tank (4) is frosted so that the liquid water forms droplets on the surface.

6. An integrated wet dust removal explosion-proof shot blasting machine according to claim 1, 2, 3 or 4, characterized in that: The inner wall of the containing tank (4) is provided with a liquid droplet groove (10) for forming a single liquid droplet.

7. The integrated wet dust removal and explosion-proof shot blasting machine according to claim 6, characterized in that: The opening of the droplet groove (10) faces downward.

8. The integrated wet dust removal and explosion-proof shot blasting machine according to claim 1, characterized in that: The surface of the sphere (5) and the inner wall of the containing groove (4) are both made of hydrophilic materials.

9. The integrated wet dust removal and explosion-proof shot blasting machine according to claim 6, characterized in that: The single-sided gap between the sphere (5) and the inner wall of the containing groove (4) is less than or equal to the radius of the liquid drop in the liquid drop groove (10).

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