Filter system and wet blasting device

Abstract

The present application relates to wet type shot blasting equipment technical field, specifically to a kind of filtering system and wet type shot blasting device.The filtering system provided by the present application, comprising: first water tank, magnetic separator and second water tank;First water tank, magnetic separator and second water tank are sequentially arranged.First water tank is formed with first sedimentation zone and overflow zone, and first sedimentation zone and overflow zone are communicated;Magnetic separator can be through magnetic force adsorption magnetic material in working fluid, and the magnetic force of magnetic separator can be adjusted setting;Second water tank is formed with water inlet area and clean water area, and water inlet area and clean water area are communicated.First water tank, magnetic separator and second water tank can separate most of solid particles in liquid, and by setting magnetic separator, fine magnetic particles in liquid can be filtered, compared with prior art, the quality of liquid can be greatly improved, thereby the descaling quality can be improved, and equipment wear is delayed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wet shot blasting equipment, in particular to a filtering system and a wet shot blasting device. BACKGROUND

[0002] Wet shot blasting is a process of using high-speed flying shot liquid mixture (shot and working liquid) to impact the surface of the workpiece to achieve rust removal, surface strengthening, etc.

[0003] The wet shot blasting equipment generally includes a filtering system to recycle the working liquid and the shot after shot blasting, thereby reducing the production cost.

[0004] Generally, the working process of the filtering system of the wet shot blasting equipment is sedimentation, rotary separation and vacuum filtration. However, the effect of rotary separation is extremely unstable, which can cause part of the shot to be unable to be recycled through the rotary separator, thereby causing waste of the shot. Moreover, the rotary separation cannot filter the fine magnetic particles in the working liquid, which causes too much suspended matter in the working liquid, thereby affecting the quality of the working liquid, and thus affecting the descaling quality and causing the equipment to be damaged quickly. SUMMARY

[0005] (1) The problem to be solved by the present application is that the filtering system of the existing wet shot blasting equipment generally separates the working liquid and the shot through a rotary separation device, which cannot filter the fine magnetic particles in the working liquid, thereby causing the quality of the filtered working liquid to be poor, affecting the quality of the working liquid, and thus affecting the descaling quality and causing the equipment to be damaged quickly.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the filtering system provided by an embodiment of the present application comprises a first water tank, a magnetic separator and a second water tank.

[0008] The first water tank is formed with a first sedimentation area and an overflow area, the first sedimentation area and the overflow area are communicated, and the first water tank has a first liquid inlet communicating the outside with the first sedimentation area and a first liquid outlet communicating the outside with the overflow area.

[0009] The magnetic separator has a second liquid inlet and a second liquid outlet, the second liquid inlet is communicated with the first liquid outlet, the magnetic separator can adsorb the magnetic substances in the working liquid through magnetic force, and the magnetic force of the magnetic separator is adjustably arranged.

[0010] The second water tank is formed with a water inlet area and a clean water area, the water inlet area and the clean water area are communicated, the second water tank has a third liquid inlet communicating the outside with the water inlet area and a third liquid outlet communicating the outside with the clean water area, and the third liquid inlet is communicated with the second liquid outlet.

[0011] Further, the magnetic separator comprises a housing, a magnetic conducting cylinder, an electromagnet group, a commutator and a carbon brush group corresponding to the commutator;

[0012] The housing is formed with a separation cavity, the second liquid inlet and the second liquid outlet are both communicated with the separation cavity, the magnetic conducting cylinder is at least partially arranged in the separation cavity, and the magnetic conducting cylinder is rotatable;

[0013] The magnetic conducting cylinder is hollow, the electromagnet group is arranged on the inner circumferential surface of the magnetic conducting cylinder, and the electromagnet group is multiple groups, and the multiple groups of electromagnet groups are arranged around the inner circumferential surface of the magnetic conducting cylinder;

[0014] The two ends of the magnetic conducting cylinder in the axial direction are both provided with the commutator, and the two commutators are respectively a first commutator and a second commutator;

[0015] The first commutator comprises a plurality of first current conducting units, the second commutator comprises a plurality of second current conducting units, and the first current conducting units and the second current conducting units correspond one by one;

[0016] The first current conducting unit serves as a current input end, the second current conducting unit serves as a current output end, the first current conducting unit and the corresponding second current conducting unit form a power supply group, and at least one electromagnet group is powered;

[0017] The carbon brush group corresponding to the first commutator is a first carbon brush group, the carbon brush group corresponding to the second commutator is a second carbon brush group, the first carbon brush group and the second carbon brush group are respectively used for electrically connecting with the electrode of the power supply, and the first carbon brush group and the second carbon brush group both have a power supply area and a power-off area in the circumferential direction thereof.

[0018] Further, the first water tank is further formed with a sand return area, and the sand return area is located between the first sedimentation area and the overflow area;

[0019] The first sedimentation area, the sand return area and the overflow area are communicated through overflow;

[0020] The first sedimentation area is provided with a first submerged plate and a plurality of interval arranged flow baffles.

[0021] Further, it further comprises a first conveying assembly;

[0022] One end of the first conveying assembly is located at the bottom of the sand return area, and the other end is communicated with the first sedimentation area, and the first conveying assembly is used for conveying the sediment in the sand return area to the first sedimentation area.

[0023] Further, a second sedimentation area is formed in the second water tank, and the second sedimentation area is located between the water inlet area and the clean water area.

[0024] The water inlet area, the second sedimentation area and the clean water area are communicated through overflow.

[0025] A slow flow plate is arranged in the water inlet area, and a second sink plate and an inclined pipe sedimentation structure are arranged in the second sedimentation area.

[0026] Further, a first filter device is arranged between the magnetic separator and the second water tank.

[0027] The first filter device has a fourth liquid inlet and a fourth liquid outlet.

[0028] The fourth liquid inlet is communicated with the second liquid outlet, and the fourth liquid outlet is communicated with the third liquid inlet.

[0029] Further, the first filter device further has a first overflow port.

[0030] The filter system further comprises a stirring device, and the stirring device comprises a box body and a stirring assembly arranged in the box body, and the box body has a fifth liquid inlet.

[0031] The first overflow port is communicated with the fifth liquid inlet, and / or the first overflow port is communicated with the second water tank.

[0032] Further, the first filter device further comprises a filter screen and a cleaning assembly.

[0033] A filter cavity is formed in the first filter device, the fourth liquid inlet and the fourth liquid outlet are both communicated with the filter cavity, and the filter screen is arranged in the filter cavity.

[0034] The cleaning assembly is used for cleaning the filter screen, and the cleaning assembly has a sewage outlet communicated with the fifth liquid inlet.

[0035] Further, a second filter device and a second conveying assembly are further included.

[0036] The second filter device has a sixth liquid inlet and a sixth liquid outlet.

[0037] One end of the second conveying assembly is located at the bottom of the box body, and the other end is communicated with the sixth liquid inlet, and the second conveying assembly is used for conveying the sediments in the box body to the second filter device; and the sixth liquid outlet is communicated with the fourth liquid inlet.

[0038] Further, a collecting structure for collecting sediments is arranged in the second water tank.

[0039] The second water tank also has a sediment outlet in communication with the outside and the collecting structure.

[0040] The sediment outlet is in communication with the sixth liquid inlet.

[0041] Another aspect of the present application provides a wet-type shot blasting device comprising the filtering system of any of the above embodiments.

[0042] The present application has the following beneficial effects:

[0043] The filtering system comprises a first water tank, a magnetic separator and a second water tank. The first water tank has a first sedimentation area and an overflow area in communication with each other. The first water tank has a first liquid inlet in communication with the outside and the first sedimentation area, and a first liquid outlet in communication with the outside and the overflow area. The magnetic separator has a second liquid inlet and a second liquid outlet. The second liquid inlet is in communication with the first liquid outlet. The magnetic separator can adsorb magnetic substances in working liquid by magnetic force, and the magnetic force of the magnetic separator can be adjusted. The second water tank has a water inlet area and a clean water area in communication with each other. The second water tank has a third liquid inlet in communication with the outside and the water inlet area, and a third liquid outlet in communication with the outside and the clean water area. The third liquid inlet is in communication with the second liquid outlet.

[0044] The first water tank, the magnetic separator and the second water tank arranged in sequence can separate most of the solid particles in the liquid. By arranging the magnetic separator between the first water tank and the second water tank, fine magnetic particles in the liquid can be filtered. Compared with the prior art, the quality of the liquid can be greatly improved, thereby improving the descaling quality and delaying equipment wear. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0046] Figure 1 The structure diagram of the filtering system provided by the embodiments of the present application;

[0047] Figure 2 The structure diagram of the magnetic separator provided by the embodiments of the present application;

[0048] Figure 3This is a schematic diagram of the magnetic separator from the left viewpoint provided in an embodiment of the present invention;

[0049] Figure 4 This is a schematic diagram of the structure of a magnetic separator provided in an embodiment of the present invention;

[0050] Figure 5 This is a partial structural schematic diagram of the magnetic cylinder provided in an embodiment of the present invention;

[0051] Figure 6 for Figure 5 A structural diagram of the left-hand viewpoint in the image;

[0052] Figure 7 for Figure 5 A schematic diagram of the cross-sectional structure along the BB direction;

[0053] Figure 8 This is a schematic diagram of the structure of a magnetic separator from the left viewpoint, provided in another embodiment of the present invention.

[0054] Icons: 1-First water tank; 11-First sedimentation zone; 12-Sand return zone; 13-Overflow zone; 14-First liquid inlet; 15-First liquid outlet; 16-First settling plate; 17-Baffle plate;

[0055] 2-Magnetic separator; 21-Housing; 211-Second liquid inlet; 212-Second liquid outlet; 22-Magnetic guide cylinder; 23-Electromagnet assembly; 231-Electromagnet block; 24-Separation chamber; 25-Commutator; 251-First commutator; 252-Second commutator; 26-Carbon brush assembly; 261-First carbon brush assembly; 262-Second carbon brush assembly; 263-Carbon brush structure; 264-Notch;

[0056] 3-Second water tank; 31-Water inlet area; 32-Second sedimentation area; 33-Clear water area; 34-Third liquid inlet; 35-Third liquid outlet; 36-Slow flow plate; 37-Second settling plate; 38-Inclined tube sedimentation structure; 39-Collection structure; 391-Sediment outlet;

[0057] 4-First filtration device; 41-Fourth inlet; 42-Fourth outlet; 43-First overflow outlet; 44-Filtration chamber; 45-Cleaning assembly; 451-Wastewater outlet;

[0058] 5-Agitator; 51-Box; 52-Agitator assembly; 53-Fifth liquid inlet;

[0059] 6-Second filtration device; 61-Sixth liquid inlet; 62-Sixth liquid outlet;

[0060] 71-Return water pump; 72-Clear water pump; 73-First slurry pump; 74-Second slurry pump; 75-Third slurry pump; 76-Water storage pit;

[0061] 8-wet shot blasting machine. DETAILED DESCRIPTION

[0062] The technical solutions of the present application will be described clearly and completely below in combination with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0063] The filtering system provided by the embodiments of the present application is mainly used for filtering magnetic substances in liquid.

[0064] Optionally, in the embodiments, the filtering system can be applied in a wet shot blasting device to filter shot and oxides in working liquid after the wet shot blasting process is performed.

[0065] The filtering system provided by the embodiments of the present application is mainly used for filtering magnetic substances in liquid. Figure 1 As shown in the figure, the filtering system comprises a first water tank 1, a magnetic separator 2 and a second water tank 3. The first water tank 1 is formed with a first sedimentation area 11 and an overflow area 13, the first sedimentation area 11 and the overflow area 13 are communicated, the first water tank 1 is provided with a first liquid inlet 14 for communicating the outside with the first sedimentation area 11 and a first liquid outlet 15 for communicating the outside with the overflow area 13. The magnetic separator 2 is provided with a second liquid inlet 211 and a second liquid outlet 212, the second liquid inlet 211 is communicated with the first liquid outlet 15, the magnetic separator 2 can adsorb magnetic substances in working liquid by magnetic force, and the magnetic force of the magnetic separator 2 can be adjusted and set. The second water tank 3 is formed with a water inlet area 31 and a clean water area 33, the water inlet area 31 and the clean water area 33 are communicated, the second water tank 3 is provided with a third liquid inlet 34 for communicating the outside with the water inlet area 31 and a third liquid outlet 35 for communicating the outside with the clean water area 33, the third liquid inlet 34 is communicated with the second liquid outlet 212.

[0066] In the embodiments, the filtering system comprises the first water tank 1, the magnetic separator 2 and the second water tank 3 arranged in sequence. Liquid enters the first water tank 1 and is deposited, and most of the solid particles are deposited in the first water tank 1. The deposited liquid is transported to the magnetic separator 2, and the magnetic separator 2 filters most of the magnetic substances in the deposited liquid. The liquid filtered by the magnetic separator 2 is transported to the second water tank 3, and the remaining solid particles are deposited again after being deposited in the second water tank 3, and finally the liquid is relatively clean.

[0067] The cleaner liquid in the second water tank 3 can be transported to the using equipment again to realize the recycling use of the liquid.

[0068] Specifically, the first water tank 1 is in a long strip groove structure, and the first water tank 1 is formed with a first sedimentation area 11 and an overflow area 13, and the first sedimentation area 11 is communicated with the overflow area 13. The first water tank 1 is provided with a first liquid inlet 14 and a first liquid outlet 15, wherein the first liquid inlet 14 is used for communicating the outside with the first sedimentation area 11, and the second liquid outlet 212 is used for communicating the outside with the overflow area 13. It should be noted that the first liquid inlet 14 is not limited to a hole, as long as it can transport liquid to the first sedimentation area 11. In operation, liquid is transported from the outside to the first sedimentation area 11 through the first liquid inlet 14, and the liquid is deposited in the first sedimentation area 11. Most of the solid particles in the liquid are deposited at the bottom of the first sedimentation area 11. A small amount of solid particles will overflow with the liquid into the overflow area 13 and be transported to the next process. By providing the first sedimentation area 11, most of the solid particles in the liquid can be separated, and by providing the overflow area 13, the solid particles deposited at the bottom of the first sedimentation area 11 can be prevented from entering the next process with the liquid.

[0069] Optionally, in the embodiment, the first sedimentation area 11 and the overflow area 13 can be separated by providing an overflow plate.

[0070] That is, the first sedimentation area 11 and the overflow area 13 are communicated by overflow, which can prevent the solid particles deposited at the bottom of the first sedimentation area 11 from entering the overflow area 13 with the liquid, so that most of the solid particles stay in the first sedimentation area 11.

[0071] Optionally, in the embodiment, the first sedimentation area 11 and the overflow area 13 can also be communicated by a hole plate, and in order to prevent the solid particles from flowing into the overflow area 13 with the liquid, a filter structure such as a filter screen can be provided on the hole plate.

[0072] Preferably, in the embodiment, the first liquid outlet 15 is located at the bottom of the overflow area 13 to avoid forming a local dead zone in the overflow area 13.

[0073] In the embodiment, the next step of the first water tank 1 is the magnetic separator 2, which is a device for separating magnetic substances and non-magnetic substances by magnetic force. The magnetic separator 2 has a second liquid inlet 211, a second liquid outlet 212, and a solid particle outlet. The second liquid inlet 211 is communicated with the first liquid outlet 15. Optionally, a conveying pipeline is arranged between the first liquid outlet 15 and the second liquid inlet 211, and a backwater pump 71 is arranged on the conveying pipeline, which is used to flow the liquid in the conveying pipeline. Under the action of the magnetic separator 2, the magnetic components in the liquid are filtered, and through experiments, 80% of the magnetic suspended matters in the liquid can be filtered out. The filtered magnetic substances are discharged to the waste tank through the solid particle outlet. The filtered liquid is conveyed to the next step through the second liquid outlet 212.

[0074] In the embodiment, the magnetic force of the magnetic separator 2 can be adjusted, so that the operator can adjust the adsorption effect of the magnetic separator 2 according to the content of the magnetic substances in the liquid.

[0075] In the embodiment, the liquid discharged from the magnetic separator 2 enters the second water tank 3 through the third liquid inlet 34, and the second water tank 3 has a water inlet area 31 and a clean water area 33. The water inlet area 31 can further precipitate the solid particles in the liquid. The water inlet area 31 and the clean water area 33 are communicated, and the communication mode can refer to the first precipitation area 11 and the overflow area 13, which will not be described here. After the liquid is deposited in the water inlet area 31, it overflows into the clean water area 33, and the liquid overflowing into the clean water area 33 has met the standard for secondary use through experiments.

[0076] The filtering system provided by the embodiment can separate most of the solid particles in the liquid by sequentially arranging the first water tank 1, the magnetic separator 2, and the second water tank 3, and can filter the fine magnetic particles in the liquid by arranging the magnetic separator 2 between the first water tank 1 and the second water tank 3, which can greatly improve the quality of the liquid compared with the prior art, thereby improving the descaling quality and delaying the equipment wear.

[0077] The filtering system provided by the embodiment, like Figures 1 to 8As shown, the magnetic separator 2 comprises a housing 21, a magnetic conducting cylinder 22, an electromagnet group 23, a commutator 25 and a carbon brush group 26 corresponding to the commutator 25; the housing 21 is formed with a separation cavity 24, the second liquid inlet 211 and the second liquid outlet 212 are both communicated with the separation cavity 24, the magnetic conducting cylinder 22 is at least partially arranged in the separation cavity 24 and can rotate; the magnetic conducting cylinder 22 is hollow, the electromagnet group 23 is arranged on the inner circumferential surface of the magnetic conducting cylinder 22, and the electromagnet group 23 is multiple groups, multiple groups of the electromagnet group 23 are arranged at intervals around the inner circumferential surface of the magnetic conducting cylinder 22; the axial both ends of the magnetic conducting cylinder 22 are both provided with the commutator 25, and the two commutators 25 are respectively a first commutator 251 and a second commutator 252; the first commutator 251 comprises multiple first current conducting units, the second commutator 252 comprises multiple second current conducting units, and the first current conducting unit and the second current conducting unit correspond one by one; the first current conducting unit serves as a current input end, the second current conducting unit serves as a current output end, the first current conducting unit and the corresponding second current conducting unit form a power supply group, and at least one group of the electromagnet group 23 is powered; the carbon brush group 26 corresponding to the first commutator 251 is a first carbon brush group 261, the carbon brush group 26 corresponding to the second commutator 252 is a second carbon brush group 262, and the first carbon brush group 261 and the second carbon brush group 262 are respectively used for electrically connecting with the electrode of a power supply, for example, the first carbon brush group 261 is used for electrically connecting with the positive electrode of a power supply, and the second carbon brush group 262 is used for electrically connecting with the negative electrode of a power supply. The first carbon brush group 261 and the second carbon brush group 262 both have a power supply area and a power-off area in the circumferential direction thereof.

[0078] In the embodiment, the magnetic separator 2 comprises a shell 21, a magnetic conducting cylinder 22, an electromagnet group 23, two commutators 25 and two carbon brush groups 26. The shell 21 is internally formed with a separation cavity 24, and the shell 21 is provided with the second liquid inlet 211 and the second liquid outlet 212, both of which are communicated with the separation cavity 24. At least a part of the magnetic conducting cylinder 22 is rotatably arranged in the separation cavity 24. The magnetic conducting cylinder 22 is a hollow cylindrical structure, and the electromagnet group 23 is arranged on the inner circumferential surface of the magnetic conducting cylinder 22. The electromagnet group 23 is provided with multiple groups, and all the electromagnet groups 23 are arranged at intervals on the inner circumferential surface of the magnetic conducting cylinder 22. For the convenience of description, the two commutators 25 are respectively a first commutator 251 and a second commutator 252, and the first commutator 251 and the second commutator 252 are arranged at two ends of the rotating shaft of the magnetic conducting cylinder 22. Each commutator 25 comprises multiple current supply units. For the convenience of understanding, the first current supply unit is taken as the current input end, and the second current supply unit is taken as the current output end. The first current supply unit and the corresponding second current supply unit jointly form a power supply group, and at least one of the power supply groups is electrically connected with one of the electromagnet groups 23 and supplies power to it. Correspondingly, the two carbon brush groups 26 are respectively a first carbon brush group 261 and a second carbon brush group 262. The first carbon brush group 261 is located on the outer circumferential side of the first commutator 251, and the second carbon brush group 262 is located on the outer circumferential side of the second commutator 252. The first carbon brush group 261 is used for electrical connection with the positive pole of the external power supply, and the second carbon brush group 262 is used for electrical connection with the negative pole of the external power supply. Each carbon brush group 26 has a power supply area and a power-off area in the circumferential direction. The two commutators 25, the multiple electromagnet groups 23 and the magnetic conducting cylinder 22 rotate synchronously. During the rotation of the magnetic conducting cylinder 22, the multiple power supply groups switch between the power supply area and the power-off area. The electromagnet groups 23 electrically connected with the power supply groups in the power supply area are in the current-on state and generate electromagnetic force, and the electromagnet groups 23 electrically connected with the power supply groups in the power-off area are in the current-off state and do not generate electromagnetic force, so that the outer circumferential side of the magnetic conducting cylinder 22 has a magnetic force area and a non-magnetic area.

[0079] In the embodiment, the electromagnet group 23 is in contact with the inner circumferential surface of the magnetic conducting cylinder 22, and there is no interval between the two. The magnetic force of the outer circumferential surface of the magnetic conducting cylinder 22 is increased, the adsorption effect is better, and the magnetic force of the outer circumferential surface of the magnetic conducting cylinder 22 can be adjusted by controlling the size of the current, so that the magnetic separator 2 has a wider application range.

[0080] It should be noted that, in the embodiment, the magnetic conducting cylinder 22 rotates counterclockwise.

[0081] Preferably, the electromagnet groups 23 are arranged at equal intervals on the inner circumferential surface of the magnetic conducting cylinder 22. In this way, it is ensured that any electromagnet group 23 can be switched between the energized state and the de-energized state.

[0082] In the present embodiment, the electromagnet groups 23 comprise a plurality of electromagnet blocks 231, which are arranged at equal intervals along the axial direction of the magnetic conducting cylinder 22. In this way, it is prevented that the electromagnet blocks 231 are too long, which would result in a stronger magnetic property at the two ends of the electromagnet blocks 231 and a weaker magnetic property in the middle region, thereby resulting in a non-uniform magnetic property of the electromagnet blocks 231.

[0083] In the present embodiment, the number of electromagnet blocks 231 in each electromagnet group 23 is equal. In this way, it is ensured that the magnetic force distribution of the entire magnetic conducting cylinder 22 is more uniform.

[0084] It should be noted that in the present application, the shapes and sizes of the plurality of electromagnet blocks 231 can be the same, and more preferably, the shapes and sizes of at least some of the plurality of electromagnet blocks 231 are different. In this way, even if the voltage or current between the plurality of power supply groups is equal through the carbon brush group 26, the magnetic force generated on each electromagnet block 231 is not the same. The shapes and sizes of the electromagnet blocks 231 can be adjusted according to the actual needs, thereby adjusting the magnetic force of each electromagnet group 23 on the magnetic conducting cylinder 22.

[0085] In the present embodiment, the portion of each electromagnet block 231 facing the inner wall surface of the magnetic conducting cylinder 22 is directly in contact with the inner wall surface of the magnetic conducting cylinder 22, and another portion of each electromagnet block 231 facing the inner wall surface of the magnetic conducting cylinder 22 is adhesively connected to the inner wall surface of the magnetic conducting cylinder 22. In this way, the electromagnet blocks 231 are directly in contact with the inner wall surface of the magnetic conducting cylinder 22, thereby ensuring that the magnetic conducting cylinder 22 has sufficient adsorption capacity.

[0086] In the present embodiment, the carbon brush group 26 is arc-shaped, and the arc-shaped carbon brush group 26 is a part of a circular ring, so that the carbon brush group 26 has a gap 264. The arc-shaped portion of the carbon brush group 26 corresponds to the power supply region, and the gap 264 corresponds to the de-energized region. The carbon brush group 26 comprises at least one carbon brush structure 263. When the carbon brush structure 263 is one, one carbon brush structure 263 corresponds to the plurality of power supply groups in the power supply region. When the carbon brush structure 263 is a plurality, the plurality of carbon brush structures 263 correspond to the plurality of power supply groups in the power supply region one by one. In this way, when the two commutators 25, the electromagnet groups 23, and the magnetic conducting cylinder 22 rotate synchronously, the external power supply supplies power to the power supply groups in the arc-shaped portion of the commutator 25 corresponding to the carbon brush group 26 in the circumferential direction through the arc-shaped carbon brush group 26, so that the electromagnet groups 23 electrically connected to the power supply groups have magnetic properties. The power supply groups corresponding to the gap 264 of the carbon brush group 26 are de-energized, so that the electromagnet groups 23 electrically connected to the power supply groups do not have magnetic properties.

[0087] It should be noted that, in the embodiment as shown in Figure 6 The carbon brush group 26 is an integral arc structure, and the multiple groups of power supply groups in the power supply area of the commutator 25 are arranged in parallel. When at least one of the voltage or the current between the multiple groups of power supply groups is equal, the magnetic force of each group of electromagnets 23 in the magnetic force area on the magnetic conducting cylinder 22 is equal. In another embodiment as shown in Figure 8 The carbon brush group 26 is multiple arc-shaped carbon brush structures 263 arranged at intervals, one carbon brush structure 263 in the carbon brush group 26 is in electrical communication with one group of power supply groups in the power supply area, and the multiple groups of power supply groups in the power supply area of the commutator 25 are arranged independently. The voltage value or the current value arranged on the multiple carbon brush structures 263 can be adjusted according to actual needs, so as to adjust the magnetic force of each group of electromagnets 23 on the magnetic conducting cylinder 22.

[0088] The filtering system provided by the embodiment of the present application, as shown in Figure 1 The first water tank 1 further forms a sand return area 12, which is located between the first sedimentation area 11 and the overflow area 13. The first sedimentation area 11, the sand return area 12 and the overflow area 13 are communicated through overflow. The first sedimentation area 11 is provided with a first sedimentation plate 16 and multiple flow blocking plates 17 arranged at intervals.

[0089] In the embodiment, the first water tank 1 further forms a sand return area 12, which is located behind the first sedimentation area 11, and is beneficial to the deposition of the remaining solid particles in the liquid.

[0090] In the embodiment, the first sedimentation area 11 is provided with multiple flow blocking plates 17, which can play a certain flow slowing effect and are beneficial to the deposition of solid particles. Therefore, most of the solid particles will deposit in the first sedimentation area 11, and the remaining solid particles will overflow with the liquid to the sand return area 12. The sand return area 12 is far away from the first liquid inlet 14, and the water flow is relatively uniform, so it is beneficial to the deposition of solid particles.

[0091] In the embodiment, the first sedimentation area 11, the sand return area 12 and the overflow area 13 are all communicated through overflow, that is, two overflow plates are arranged in the first water tank 1 to separate the first water tank 1 into the first sedimentation area 11, the sand return area 12 and the overflow area 13.

[0092] Optionally, the first sedimentation area 11, the sand return area 12 and the overflow area 13 can also be communicated through the hole plate as described above, which will not be described here.

[0093] In the embodiment, the sand return area 12 and the accessories such as the flow baffle 17 and the first submerged plate 16 can replace the rotary separator in the prior art, most of the shot can be recycled, and the shot can be saved.

[0094] The filtering system provided by the embodiment of the application, as shown in Figure 1 The first conveying assembly is located at one end of the bottom of the sand return area 12 and is in communication with the first sedimentation area 11 at the other end, and the first conveying assembly is used for conveying the sediment in the sand return area 12 to the first sedimentation area 11.

[0095] In the embodiment, the first conveying assembly includes a conveying pipeline and a first slurry pump 73, one end of the conveying pipeline is located at the bottom of the sand return area 12, and the other end is in communication with the first liquid inlet 14, under the action of the first slurry pump 73, the solid particles in the sand return area 12 are punched back into the first sedimentation area 11 with the liquid, and the solid particles are beneficial to be recycled.

[0096] Alternatively, the end of the conveying pipeline can be located at the bottom of the sand return area 12 by opening a hole at the bottom of the sand return area 12, or the end of the conveying pipeline can be directly inserted into the bottom of the sand return area 12, and the former is adopted in the embodiment.

[0097] The filtering system provided by the embodiment of the application, as shown in Figure 1 The second water tank 3 further forms a second sedimentation area 32, the second sedimentation area 32 is located between the water inlet area 31 and the clean water area 33, the water inlet area 31, the second sedimentation area 32 and the clean water area 33 are in communication through overflow, the water inlet area 31 is provided with a flow retarder 36, and the second sedimentation area 32 is provided with a second submerged plate 37 and an inclined pipe sedimentation structure 38.

[0098] In the embodiment, the second water tank 3 further divides the second sedimentation area 32, and the second sedimentation area 32 is used for further depositing the solid particles in the liquid and improving the quality of the liquid in the clean water area 33.

[0099] Specifically, the water inlet area 31 is provided with the flow retarder 36, the liquid can be dispersed and the flow can be slowed down, and the flow retarder 36 is used for depositing and separating the heavier solid particles in the liquid. The liquid in the water inlet area 31 overflows into the second sedimentation area 32, the second sedimentation area 32 is provided with the second submerged plate 37 and the inclined pipe sedimentation structure 38, under the action of the second submerged plate 37, the liquid can enter the inclined pipe sedimentation structure 38 to promote the solid-liquid separation. After the liquid is treated by the water inlet area 31 and the second sedimentation area 32, the liquid entering the clean water area 33 can be as clean as possible, and the liquid is beneficial to be recycled and reused.

[0100] Optionally, the overflow structure between the water inlet area 31, the second sedimentation area 32 and the clear water area 33 is the same as the overflow structure between the first sedimentation area 11, the sand return area 12 and the overflow area 13, which will not be described here.

[0101] Further, in order to improve the filtering effect, the filtering system further comprises a first filtering device 4, which is arranged between the magnetic separator 2 and the second water tank 3; the first filtering device 4 has a fourth liquid inlet 41 and a fourth liquid outlet 42; the fourth liquid inlet 41 is communicated with the second liquid outlet 212, and the fourth liquid outlet 42 is communicated with the third liquid inlet 34.

[0102] In the embodiment, the first filtering device 4 is arranged between the magnetic separator 2 and the second water tank 3, and is used for filtering solid particles in the liquid. The liquid adsorbed by the magnetic separator 2 is transported into the first filtering device 4 through the fourth liquid inlet 41, and in the first filtering device 4, the solid particles in the liquid are further filtered to improve the quality of the liquid. After being filtered by the first filtering device 4, the liquid is discharged from the first filtering device 4 through the fourth liquid outlet 42 and enters the water inlet area 31 of the second water tank 3 through the third liquid inlet 34.

[0103] Optionally, in the embodiment, the first filtering device 4 is a flat bed filter using filter screen filtering and vacuum negative pressure principle.

[0104] The filtering system provided by the embodiment of the present application has the advantages that Figure 1 As shown in the figure, the first filtering device 4 further has a first overflow port 43; the filtering system further comprises a stirring device 5, which comprises a box body 51 and a stirring assembly 52 arranged in the box body 51; the box body 51 has a fifth liquid inlet 53; the first overflow port 43 is communicated with the fifth liquid inlet 53, and / or the first overflow port 43 is communicated with the second water tank 3.

[0105] In the embodiment, the first filtering device 4 further has the first overflow port 43, which is communicated with the filtering cavity 44 of the first filtering device 4 and the outside, and the first overflow port 43 is arranged lower than the fourth liquid inlet 41. When the first filtering device 4 cannot work abnormally, such as filter screen blockage, the liquid in the filtering cavity 44 can be discharged from the first overflow port 43.

[0106] In the embodiment, the filtering system further comprises the stirring device 5, which comprises the box body 51 and the stirring assembly 52 arranged in the box body 51, and is used for stirring the liquid in the box body 51 to prevent the solid particles from sinking to the bottom.

[0107] In the embodiment, the stirring device 5 is mainly used for receiving the wastewater after the filter screen is cleaned by the cleaning assembly 45, which will be described in detail below.

[0108] In the embodiment, the first overflow port 43 can be in communication with the second water tank 3, i.e., the fourth liquid inlet port 41, can be in communication with the stirring device 5, i.e., the fifth liquid inlet port 53, or can be in communication with both the fourth liquid inlet port 41 and the fifth liquid inlet port 53 by means of a branch pipe, and the latter is preferred in the embodiment.

[0109] In the embodiment, when the first filtering device 4 fails, the liquid in the filtering cavity 44 is preferentially discharged into the stirring device 5, and if the stirring device 5 cannot bear the liquid, the liquid in the filtering cavity 44 is discharged into the second water tank 3. The discharging can be realized by setting an on-off valve on the corresponding branch.

[0110] The filtering system provided by the embodiment of the present application, as shown in Figure 1 The first filtering device 4 further comprises a filter screen and a cleaning assembly 45; the first filtering device 4 forms a filtering cavity 44 therein, the fourth liquid inlet port 41 and the fourth liquid outlet port 42 are both in communication with the filtering cavity 44, and the filter screen is arranged in the filtering cavity 44; the cleaning assembly 45 is used for cleaning the filter screen, and the cleaning assembly 45 has a sewage outlet 451 in communication with the fifth liquid inlet port 53.

[0111] In the embodiment, the first filtering device 4 comprises a filter screen and a cleaning assembly 45, both of which are arranged in the filtering cavity 44. The filter screen is used for filtering solid particles in the liquid, and the cleaning assembly 45 is used for cleaning the filter screen to avoid too many solid particles remaining on the filter screen and affecting the normal use of the filtering system. The cleaning assembly 45 generates sewage in the process of cleaning the filter screen, and the cleaning assembly 45 has a sewage outlet 451 in communication with the fifth liquid inlet port 53.

[0112] In the embodiment, the stirring assembly 52 of the stirring device 5 continuously stirs the liquid in the tank 51 when the filtering system is working, so as to avoid the deposition of solid particles in the liquid.

[0113] Optionally, in the embodiment, the stirring assembly 52 comprises a stirring paddle and a stirring motor, the stirring motor is in transmission connection with the stirring paddle and drives the stirring paddle to rotate.

[0114] In the embodiment, the solid particles in the liquid in the stirring device 5 are the above-mentioned pellets and oxides, and the pellets can also be recycled.

[0115] Specifically, the filtering system provided by the embodiment of the present application, as shown in Figure 1As shown, it also includes a second filtration device 6 and a second conveying assembly. The second filtration device 6 has a sixth inlet 61 and a sixth outlet 62; one end of the second conveying assembly is located at the bottom of the housing 51, and the other end is connected to the sixth inlet 61. The second conveying assembly is used to convey the sediment in the housing 51 to the second filtration device 6; the sixth outlet 62 is connected to the fourth inlet 41.

[0116] In this embodiment, the filtration system further includes a second filtration device 6 and a second conveying assembly. The second filtration device 6 is also used to filter solid particles in the liquid. The second filtration device 6 has a sixth inlet 61 and a sixth outlet 62. The second conveying assembly includes a conveying pipeline and a second slurry pump 74. One end of the conveying pipeline is located at the bottom of the housing 51, and the other end is connected to the sixth inlet 61. Under the action of the second slurry pump 74, solid particles in the housing 51 are conveyed along with the liquid to the second filtration device 6 through the conveying pipeline.

[0117] In this embodiment, optionally, the end of the conveying pipe is located at the bottom of the box 51 by opening a hole in the bottom of the box 51, or the conveying pipe is directly extended from inside the box 51 to the bottom of the box 51. In this embodiment, the former is preferred.

[0118] It is understood that in this embodiment, the second filtration device 6 is a filter press.

[0119] In this embodiment, the sixth liquid outlet 62 is connected to the fourth liquid inlet 41. The liquid filtered by the second filter device 6 is transported to the first filter device 4, filtered by the first filter device 4, deposited in the second water tank 3, and then recycled.

[0120] Optionally, in this embodiment, the filtration system further includes a water storage pit 76, into which the liquid discharged from the sixth outlet 62 is discharged. A water pump is installed in the water storage pit 76 to transport the liquid in the water storage pit 76 to the fourth inlet 41 of the first filtration device 4 and the cleaning component 45 of the second filtration device 6.

[0121] Optionally, in this embodiment, the box 51 is also provided with a second overflow port. When the stirring device 5 malfunctions, the liquid in the box 51 is discharged from the box 51 through the second overflow port. The second overflow port is connected to the water storage pit 76, and the overflowed liquid is discharged into the water storage pit 76.

[0122] In this embodiment, the liquid overflowing from the tank 51 contains solid particles. Therefore, the water in the water storage pit 76 will be transported to the first filtration device 4 for further filtration before it can be discharged into the second water tank 3.

[0123] The filtering system provided by the embodiment of the present application, for example Figure 1 As shown in the figure, the second water tank 3 is provided with a collecting structure 39 for collecting the sediment; the second water tank 3 is further provided with a sediment outlet 391 for connecting the outside and the collecting structure 39; the sediment outlet 391 is communicated with the sixth liquid inlet 61.

[0124] In the embodiment, the second water tank 3 is provided with a collecting structure 39 for collecting the sediment, specifically, the collecting structure 39 is a collecting bin arranged at the bottom of the second water tank 3, and the collecting structure 39 is used to collect the sediment in the water inlet area 31, the second sedimentation area 32 and the clear water area 33 at the same time, the sediment collected by the collecting structure 39 is discharged through the sediment outlet 391 and transported to the second filtering device 6 for filtering and recycling.

[0125] Optionally, a conveying pipeline and a third slurry pump 75 for making the liquid flow in the conveying pipeline are further arranged between the sediment outlet 391 and the sixth liquid inlet 61.

[0126] The filtering system provided by the embodiment of the present application takes the wet-type shot blasting device as an example, the shot blasting device includes a wet-type shot blasting machine 8, and the liquid to be filtered is the working liquid mixed with steel sand and oxides.

[0127] In use, the wet blasting machine 8 sprays the working liquid mixed with steel sand to the upper and lower surfaces of the steel plate, under the action of the steel sand, the oxide skin on the surface of the steel plate is cleaned, the working liquid mixed with the steel sand and the oxide skin is discharged to the first sedimentation area 11 of the first water tank 1 through the wet blasting machine 8, under the action of the flow baffle 17 in the first sedimentation area 11, the flow rate of the working liquid is gradually slowed down, and the steel sand and the oxide skin are promoted to deposit. Most of the steel sand and the oxide skin will deposit in the first sedimentation area 11, and the remaining small amount of steel sand and the oxide skin will overflow with the working liquid to the sand return area 12. Since the sand return area 12 is far away from the liquid inlet position, and the water flow in the sand return area 12 is relatively uniform under the action of the flow baffle 17 in the first sedimentation area 11, the remaining steel sand and the oxide skin will deposit in the sand return area 12. Under the action of the first slurry pump 73, the steel sand and the oxide skin at the bottom of the sand return area 12 are pumped back to the first sedimentation area 11 for subsequent recovery of the steel sand. The working liquid in the sand return area 12 continues to overflow to the overflow area 13, and the working liquid in the overflow area 13 is transported to the magnetic separator 2 by the water return pump 71. Under the action of the magnetic separator 2, most of the magnetic suspended matter (oxide skin and fine steel sand) is filtered by the magnetic separator 2, and the magnetic particles adsorbed are discharged into a waste bucket. The working liquid filtered by the magnetic separator 2 is discharged into the flat bed filter (the first filtering device 4), and the flat bed filter filters the fine suspended matter (oxide skin and fine steel sand) in the working liquid for the second time to improve the quality of the working liquid. The working liquid filtered by the flat bed filter is transported to the second water tank 3. The working liquid first enters the water inlet area 31 of the second water tank 3, and under the action of the slow flow plate 36 in the water inlet area 31, the flow rate of the working liquid is slowed down, and the remaining steel sand and oxide skin in the working liquid continue to deposit. The working liquid in the water inlet area 31 overflows to the second sedimentation area 32, and under the action of the second sedimentation plate 37 and the inclined pipe sedimentation structure 38, the steel sand and the oxide skin complete the final deposition. At this point, the working liquid overflowing to the clean water area 33 is clean and can be directly used. The clean water pump 72 is arranged between the clean water area 33 and the wet blasting machine 8, and under the action of the clean water pump 72, the working liquid in the clean water area 33 is transported to the wet blasting machine 8 for secondary use.

[0128] In the working process of the cleaning assembly 45, the working liquid mixed with the steel sand and the oxide skin is discharged into the tank 51 through the sewage outlet 451, and the stirring assembly 52 in the tank 51 continuously stirs the working liquid in the tank 51. The working liquid in the tank 51 is transported to the filter press (the second filtering device 6) for filtration under the action of the second slurry pump 74, and the filtered working liquid is discharged into the water storage pit 76, and the working liquid in the water storage pit 76 is pumped back to the flat bed filter.

[0129] Another aspect of the embodiment of the present application also provides a wet blasting device, which comprises the filtering system described in any of the above embodiments.

[0130] In the description of the present application, it should be noted that the terms "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the 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 cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0131] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "communication", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly communicated, or it can be indirectly communicated through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0132] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A filtration system, characterized in that, include: First water tank (1), magnetic separator (2), and second water tank (3); The first water tank (1) has a first sedimentation zone (11) and an overflow zone (13) formed inside it. The first sedimentation zone (11) and the overflow zone (13) are connected. The first water tank (1) has a first inlet (14) that connects to the outside and the first sedimentation zone (11) and a first outlet (15) that connects to the outside and the overflow zone (13). The magnetic separator (2) has a second inlet (211) and a second outlet (212). The second inlet (211) is connected to the first outlet (15). The magnetic separator (2) can adsorb magnetic substances in the working fluid by magnetic force, and the magnetic force of the magnetic separator (2) can be adjusted. The second water tank (3) has an inlet area (31) and a clear water area (33) formed inside. The inlet area (31) and the clear water area (33) are connected. The second water tank (3) has a third liquid inlet (34) that connects to the outside and the inlet area (31) and a third liquid outlet (35) that connects to the outside and the clear water area (33). The third liquid inlet (34) is connected to the second liquid outlet (212). The magnetic separator (2) includes: a housing (21), a magnetic cylinder (22), an electromagnet assembly (23), a commutator (25), and a carbon brush assembly (26) corresponding to the commutator (25). A separation chamber (24) is formed inside the housing (21). The second liquid inlet (211) and the second liquid outlet (212) are both connected to the separation chamber (24). The magnetic tube (22) is at least partially disposed inside the separation chamber (24) and the magnetic tube (22) is rotatable. The magnetic cylinder (22) is hollow, and the electromagnet group (23) is arranged on the inner circumferential surface of the magnetic cylinder (22). There are multiple groups of electromagnet groups (23), and the multiple groups of electromagnet groups (23) are arranged around the inner circumferential surface of the magnetic cylinder (22). The magnetic cylinder (22) is provided with commutators (25) at both ends of its axial direction. The two commutators (25) are the first commutator (251) and the second commutator (252). The first commutator (251) includes a plurality of first energizing units, and the second commutator (252) includes a plurality of second energizing units, with the first energizing units and the second energizing units corresponding one-to-one; The first energizing unit serves as the current input terminal, and the second energizing unit serves as the current output terminal. The first energizing unit and the corresponding second energizing unit form a power supply group and supply power to at least one group of electromagnets (23). The carbon brush group (26) corresponding to the first commutator (251) is the first carbon brush group (261), and the carbon brush group (26) corresponding to the second commutator (252) is the second carbon brush group (262). The first carbon brush group (261) and the second carbon brush group (262) are respectively used to electrically connect to the electrodes of the power supply. The first carbon brush group (261) and the second carbon brush group (262) both have a power supply area and a power off area in their circumferential direction.

2. The filtration system according to claim 1, characterized in that, A sand return zone (12) is also formed inside the first water tank (1), and the sand return zone (12) is located between the first sedimentation zone (11) and the overflow zone (13); The first sedimentation zone (11), the sand return zone (12), and the overflow zone (13) are connected by an overflow; The first sedimentation zone (11) is provided with a first settling plate (16) and a plurality of baffles (17) spaced apart.

3. The filtration system according to claim 2, characterized in that, It also includes a first conveying component; One end of the first conveying component is located at the bottom of the sand return zone (12), and the other end is connected to the first sedimentation zone (11). The first conveying component is used to convey the sediment in the sand return zone (12) to the first sedimentation zone (11).

4. The filtration system according to claim 1, characterized in that, A second sedimentation zone (32) is also formed in the second water tank (3), which is located between the water inlet zone (31) and the clear water zone (33); The water inlet zone (31), the second sedimentation zone (32), and the clear water zone (33) are connected by an overflow; The water inlet zone (31) is provided with a flow slowing plate (36), and the second sedimentation zone (32) is provided with a second settling plate (37) and an inclined tube sedimentation structure (38).

5. The filtration system according to claim 1, characterized in that, It also includes a first filtration device (4), which is disposed between the magnetic separator (2) and the second water tank (3); The first filtration device (4) has a fourth liquid inlet (41) and a fourth liquid outlet (42). The fourth liquid inlet (41) is connected to the second liquid outlet (212), and the fourth liquid outlet (42) is connected to the third liquid inlet (34).

6. The filtration system according to claim 5, characterized in that, The first filtration device (4) also has a first overflow port (43); The filtration system also includes a stirring device (5), which includes a housing (51) and a stirring assembly (52) disposed in the housing (51). The housing (51) has a fifth liquid inlet (53). The first overflow port (43) is connected to the fifth liquid inlet (53), and / or the first overflow port (43) is connected to the second water tank (3).

7. The filtration system according to claim 6, characterized in that, The first filtration device (4) also includes a filter screen and a cleaning assembly (45); The first filtration device (4) has a filtration chamber (44) formed inside it. The fourth liquid inlet (41) and the fourth liquid outlet (42) are both connected to the filtration chamber (44). The filter screen is disposed inside the filtration chamber (44). The cleaning assembly (45) is used to clean the filter screen. The cleaning assembly (45) has a wastewater outlet (451) which is connected to the fifth liquid inlet (53).

8. The filtration system according to claim 7, characterized in that, It also includes a second filtration device (6) and a second conveying assembly; The second filtration device (6) has a sixth liquid inlet (61) and a sixth liquid outlet (62); One end of the second conveying component is located at the bottom of the box (51), and the other end is connected to the sixth liquid inlet (61). The second conveying component is used to convey the sediment in the box (51) to the second filtration device (6); the sixth liquid outlet (62) is connected to the fourth liquid inlet (41).

9. The filtration system according to claim 8, characterized in that, The second water tank (3) is equipped with a collection structure (39) for collecting sediment. The second water tank (3) also has a sediment outlet (391) that connects to the outside world and the collection structure (39). The sediment outlet (391) is connected to the sixth liquid inlet (61).

10. A wet shot blasting device, characterized in that, Includes the filtration system as described in any one of claims 1 to 9.

Images