Automatic wet sandblasting equipment with high utilization rate of sand water circulation

Abstract

The present invention discloses an automatic wet sandblasting device with a high utilization rate of sand water circulation, which includes a sand water separation device, a sandblasting component, a sand material supply device, a spraying component, and a reflux component; the sand water separation device includes a stirring mechanism and a stirring tank. Under stirring, sandblasting materials can be obtained from the discharge port, and waste sand water is discharged from the water outlet; the sandblasting component is connected to the discharge port, and the workpiece on the sandblasting station is sandblasted based on the sandblasting materials. The spraying component is connected to the water outlet, and the waste sand water can be filtered and used to wash the workpiece, and finally the mixed sand water at the sandblasting station is refluxed to the stirring tank for recycling by the reflux component; among them, part of the sandblasting materials flows into the sand water concentration detection device, and the sand material supply device can be controlled to add sand materials into the stirring tank based on the detection results; a water storage tank with a liquid level sensing detection component is arranged between the spraying component and the water outlet, and water can be added into the water storage tank based on the liquid level change. The technical solution of the present invention realizes automatic operation and has a high utilization rate of sand water circulation.

Description

Technical Field

[0001] The present invention relates to the technical field of wet sandblasting equipment, and particularly to an automatic wet sandblasting equipment with high sand-water circulation utilization rate. Background Art

[0002] Wet sandblasting is a sandblasting process that is gradually widely used. Due to the sand-water mixing operation, compared with traditional dry sandblasting machines, there is no dust problem, it is environmentally friendly and has great development potential.

[0003] Wet sandblasting equipment generally needs to mix sand materials with water, and then stir and separate the sandblasting materials. Some existing wet sandblasting equipment also requires manual supervision of the addition of sand materials and water, with low intelligence. Moreover, the wet sandblasting equipment directly discharges the waste sand water without effectively recycling the waste sand water, resulting in large resource waste, high costs, and serious environmental pollution. Summary of the Invention

[0004] The present invention provides an automatic wet sandblasting equipment with high sand-water circulation utilization rate, aiming to solve the problems of low sand-water circulation utilization rate and low intelligence in existing wet sandblasting equipment.

[0005] To achieve the above object, the present invention provides an automatic wet sandblasting equipment with high sand-water circulation utilization rate, including:

[0006] A sand-water separation device, including a mixing tank and a mixing mechanism arranged in the mixing tank. The mixing tank is used to accommodate the sand-water mixture. The mixing tank is provided with a discharge port for obtaining the sandblasting raw materials and a water outlet for discharging the waste sand water.

[0007] A sandblasting assembly, one end of which is connected to the discharge port, and the other end is arranged corresponding to the workpiece at the sandblasting station. The sandblasting assembly is used to perform sandblasting treatment on the workpiece based on the sandblasting materials discharged from the discharge port. The sandblasting assembly is connected with a sand-water concentration detection device through a shunt pipeline. The sand-water concentration detection device is used to detect the proportion of the sand material concentration in the sandblasting materials.

[0008] A sand material supply device, arranged above the mixing tank. The sand material supply device is used to supply sand materials to the mixing tank when the proportion of the sand material concentration detected by the sand-water concentration detection device is lower than the concentration threshold.

[0009] A spray assembly, one end of which is connected to the water outlet and the other end of which is arranged corresponding to the workpiece on the sandblasting station, and the spray assembly is used to filter the waste sand water discharged from the water outlet and then spray the workpiece with water; wherein a water storage tank with a liquid level sensor detection component is arranged between the spray assembly and the water outlet, and the liquid level sensor detection component is used to detect the liquid level in the water storage tank, and when the liquid level in the water storage tank is lower than the liquid level threshold, control the external water adding equipment to add water into the water storage tank; and,

[0010] A reflux component is also provided on the mixing tank with a water inlet, one end of the reflux component is connected to the water inlet, and the other end is connected to the sandblasting station. The reflux component is used to return the sand-water mixture formed in the sandblasting station to the mixing tank.

[0011] In some embodiments, the stirring mechanism includes a vertically placed stirring shaft and a first driving member for driving the stirring shaft to rotate, and the stirring shaft is provided with a plurality of stirring members near the bottom of the stirring tank.

[0012] In some embodiments, the agitator shaft is hollow and has a cavity, the bottom of the agitator shaft passes through the water outlet and the cavity is connected to the water tank; wherein the agitator shaft is provided with a plurality of water outlet holes near its upper portion, and the water outlet holes are connected to the cavity.

[0013] In some embodiments, the sand and water concentration detection device includes a cylinder for filling sand and water samples, the cylinder is placed vertically, and has a first preset height, a second preset height and a third preset height on its outer side along its height direction, and a first sensor is provided corresponding to the first preset height, a second sensor is provided corresponding to the second preset height, and a third sensor is provided corresponding to the third preset height, and a drain outlet connected to the mixing tank is provided at the bottom of the cylinder.

[0014] In some embodiments, two liquid inlets are relatively arranged at the top of the cylinder, and two liquid inlet areas are formed in the cylinder corresponding to the two liquid inlets. The third sensor is arranged in a avoidance position between the two liquid inlet areas, and a partial area between the two liquid inlets is recessed to form a flow blocking groove.

[0015] In some embodiments, the sand supply device includes a feeding funnel, an adjustment control unit and a second driving member, the second driving member is connected to the adjustment control unit and is used to drive the adjustment control unit to rotate, and the adjustment control unit is alternately provided with blocking parts and recessed parts on its circumference along the rotation direction, and the blocking parts and the recessed parts are docked at the outlet end of the feeding funnel.

[0016] In some embodiments, the spraying assembly includes a cyclone desander and a spraying gun. The water inlet end of the cyclone desander is connected to the water outlet end of the water storage tank. The water outlet end of the cyclone desander is communicated with the spraying gun, and the sand discharging end of the cyclone desander is connected to the mixing tank.

[0017] In some embodiments, a filtering port for filtering fine sand is provided on the side wall of the mixing tank. A filter screen is detachably installed at the filtering port, and the water inlet is arranged towards the filtering port.

[0018] In some embodiments, a fine sand accommodating groove is provided outside the mixing tank corresponding to the filtering port. The fine sand accommodating groove is used for precipitating and separating water and fine sand, and a reflux pipeline is provided between the fine sand accommodating groove and the mixing tank.

[0019] In some embodiments, the reflux assembly includes a sand-water collecting device and a reflux pump. One end of the reflux pump is connected to the water inlet, and the other end is connected to the sand-water collecting device. The sand-water collecting device is arranged at the sandblasting station for collecting the sand-water mixture at the sandblasting station, and is pumped into the mixing tank by the reflux pump.

[0020] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0021] (1) The mixing of sand and water is carried out in the mixing tank, and a discharge port for discharging the sandblasting material and a water outlet for discharging the waste sand water are provided on the mixing tank. Among them, the discharge port is connected to the sandblasting assembly, and the sandblasting assembly can be used for sandblasting the workpiece at the sandblasting station. The water outlet is connected to the spraying assembly, and the spraying assembly can be used for cleaning the workpiece after sandblasting after filtering the waste sand water, and finally the sand-water mixture at the sandblasting station can be refluxed and transported into the mixing tank by the reflux assembly, so as to realize the recycling of sand and water, and the sand-water recycling rate is high.

[0022] (2) A sand-water concentration detection device is provided to detect the proportion of the sand concentration in the sandblasting material obtained. When the proportion of the sand concentration is lower than the concentration threshold, sand can be added to the mixing tank through the sand supply mechanism, and a water storage tank with a liquid level sensing detection component is provided. When the liquid level in the water storage tank is lower than the liquid level threshold, water can be added to the water storage tank through an external water adding device, so as to achieve the purpose of automatic sand and water addition, maintain the sand-water balance, and the degree of automation is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of an automatic wet sandblasting device with a high sand-water recycling rate in an embodiment of the present invention;

[0024] Figure 2 It is a partial cross-sectional structural diagram of a sand-water separation device in an embodiment of the present invention;

[0025] Figure 3 Schematic structural diagram of the stirring mechanism in an embodiment of the present invention;

[0026] Figure 4 Schematic installation structure diagram of the sandblasting component and the mixing tank in an embodiment of the present invention;

[0027] Figure 5 Schematic structural diagram of the sand - water concentration detection device in an embodiment of the present invention;

[0028] Figure 6 is Figure 5 Schematic top - view structure diagram of the sand - water concentration detection device in;

[0029] Figure 7 Schematic structural diagram of the sand supply device in an embodiment of the present invention;

[0030] Figure 8 Schematic installation structure diagram of the spraying component and the mixing tank in an embodiment of the present invention. Detailed implementation manners

[0031] 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 of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0033] It should also be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0034] In addition, the descriptions involving "first", "second", etc. in the present invention are for descriptive purposes only, and should not be construed as indicating or implying their 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 such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] Referring to Figures 1 - 8 As shown, the present invention provides an automatic wet sandblasting device 100 with a high sand-water circulation utilization rate, including a sand-water separation device 10, a sandblasting assembly 20, a sand supply device 40, a spraying assembly 50, and a reflux assembly 70. Among them,

[0036] The sand-water separation device 10 includes a mixing tank 110 and a mixing mechanism 120 arranged in the mixing tank 110. The mixing tank 110 is used to hold the sand-water mixture. The mixing tank 110 is provided with a discharge port 1101 for obtaining the sandblasting raw material and a water outlet 1102 for discharging the waste sand water; one end of the sandblasting assembly 20 is connected to the discharge port 1101, and the other end is arranged corresponding to the workpiece at the sandblasting station. The sandblasting assembly 20 is used to perform sandblasting on the workpiece based on the sandblasting material discharged from the discharge port 1101; the sandblasting assembly 20 is connected with a sand-water concentration detection device 30 through a shunt pipeline. The sand-water concentration detection device 30 is used to detect the proportion of the sand material concentration in the sandblasting material; the sand supply device 40 is arranged above the mixing tank 110. The sand supply device 40 is used to supply sand to the mixing tank 110 when the proportion of the sand material concentration detected by the sand-water concentration detection device 30 is lower than the concentration threshold; the spraying assembly 50, one end is connected to the water outlet 1102, and the other end is arranged corresponding to the workpiece at the sandblasting station. The spraying assembly 50 is used to filter the waste sand water discharged from the water outlet 1102 and then spray and wash the workpiece; among them, a water storage tank 60 with a liquid level sensing detection component 610 is arranged between the spraying assembly 50 and the water outlet 1102. The liquid level sensing detection component 610 is used to detect the liquid level in the water storage tank 60 and control an external water adding device to add water into the water storage tank 60 when the liquid level in the water storage tank 60 is lower than the liquid level threshold; and, the reflux assembly 70, the mixing tank 110 is further provided with a water inlet 1103. One end of the reflux assembly 70 is connected to the water inlet 1103, and the other end is connected to the sandblasting station. The reflux assembly 70 is used to reflux the sand-water mixture formed at the sandblasting station into the mixing tank 110.

[0037] In the technical solution of the present invention, the mixing of sand material and water is carried out in the mixing tank 110, and a discharge port 1101 for discharging the sandblasting material and a water outlet 1102 for discharging the waste sand water are provided on the mixing tank 110. Among them, the discharge port 1101 is connected to the sandblasting assembly 20, and the sandblasting assembly 20 can be used for sandblasting the workpieces at the sandblasting station. The water outlet 1102 is connected to the spraying assembly 50. After filtering the waste sand water, the spraying assembly 50 can be used to clean the workpieces after sandblasting, and finally the sand-water mixture at the sandblasting station can be recycled and transported back to the mixing tank 110 by the reflux assembly 70, so as to realize the recycling of sand and water, and the sand-water recycling rate is high.

[0038] Secondly, a sand-water concentration detection device 30 is provided to detect the proportion of the sand material concentration in the sandblasting material obtained. When the proportion of the sand material concentration is lower than the concentration threshold, sand material can be added to the mixing tank 110 through the sand material supply mechanism 40. A water storage tank 60 with a liquid level sensing detection component 610 is provided. When the liquid level in the water storage tank 60 is lower than the liquid level threshold, water can be added to the water storage tank 60 through an external water adding device, which can achieve the purpose of automatically adding sand and water, maintaining the sand-water balance, and having a high degree of automation.

[0039] In some embodiments, the mixing tank 110 is of a cylindrical structure. The mixing tank 110 is used to accommodate the sand-water mixture, and a stirring member 123 is provided for stirring to fully mix the sand material and water.

[0040] In some embodiments, the discharge port 1101 is provided on the side wall of the mixing tank 10 near the bottom. The mixing mechanism 120 includes a vertically placed stirring shaft 121 and a first driving member 122 for driving the stirring shaft 121 to rotate. A plurality of stirring members 123 are provided on the stirring shaft 121 near the bottom of the mixing tank 110.

[0041] In this embodiment, the first driving member 122 drives the stirring shaft 121 to rotate, and the stirring member 123 rotates accordingly. Then, during the stirring process, the sand-water mixture in the mixing tank 110 can be driven to rotate in the rotation direction of the stirring shaft 121, and the sand material and water are fully mixed under continuous stirring. Among them, based on the centrifugal force during the rotation process, the sand material gradually moves towards the outer side and rotates (that is, rotates along the inner wall of the mixing tank 110). It can be understood that during the continuous rotation of the sand material, when it is close to the discharge port 1101, it will be thrown out from the discharge port 1101 based on the centrifugal force, that is, the sandblasting material can be obtained at the discharge port 1101.

[0042] In some embodiments, the water outlet 1102 is provided at the exact middle position of the bottom of the mixing tank 110. The mixing shaft 121 is designed with a hollow interior to form a cavity 1211. The bottom of the mixing shaft 121 penetrates through the water outlet 1102 and the cavity 1211 communicates with the water storage tank 60. Among them, a plurality of water outlet holes 1212 are provided near the upper part of the mixing shaft 121, and the water outlet holes 1212 communicate with the cavity 1211.

[0043] In this embodiment, through the structural arrangement of the water outlet holes 1212 and the cavity 1211, the mixing tank 110 is connected to the water storage tank 60. During the process of continuously adding water to the mixing tank 110, a part of the mixed sand water can be discharged through the mixing shaft 121 to ensure that the water content in the mixing tank 110 remains in a relatively stable state. Among them, during the stirring process of the sand-water mixture, the sand material is mostly located at the bottom and near the outer side of the mixing tank 110. When a part of the mixed sand water rises to the position of the water outlet holes 1212, it will enter the cavity 1211 through the water outlet holes 1212 for transmission, and after precipitation, it will finally be output into the water storage tank 60. In some preferred embodiments, a plurality of water outlet holes 1212 are arranged in an array on the side wall of the stirring member 123.

[0044] In some embodiments, there are at least two stirring members 123. The at least two stirring members 123 are arranged on the outer wall of the mixing shaft 121 at equal intervals along the axial direction of the mixing shaft 121. That is, when there are two stirring members 123, the two stirring members 123 are arranged on the opposite outer walls of the mixing shaft 121. When there are three stirring members 123, the three stirring members 123 are arranged on the circumferential outer wall of the mixing shaft 121 with an included angle between each other. Further, each stirring member 123 includes a first stirring blade 1231, a second stirring blade 1232, and a connecting member 1233 for connecting the first stirring blade 1231 and the second stirring blade 1232. The connecting member 1233 can ensure that the first stirring blade 1231 and the second stirring blade 1232 are in a relatively stable state. Among them, both the first stirring blade 1231 and the second stirring blade 1232 are inclined at an angle with the vertical direction, which is beneficial to driving the sand-water mixture to rotate. And the first stirring blade 1231 and the second stirring blade 1232 are arranged in two parallel layers up and down. Setting multiple stirring blades can improve the stirring effect of the stirring member 123.

[0045] Refer to Figure 2As shown, in some embodiments, a plurality of blocking blocks 1106 are provided at intervals along the inner wall of the mixing tank 110. The plurality of blocking blocks 1106 can make the sand and water mix more evenly. It is understandable that part of the sand may be in a clump state after being added to the mixing tank 110. When the clumps of sand rotate and hit the blocking blocks 1106, the clumps of sand can be broken up, thereby ensuring that each grain can be fully mixed with water. In some preferred embodiments, the blocking blocks 1106 are placed vertically in a design similar to a triangular prism, one side of which fits the side wall of the mixing tank 110, and when the sand-water mixture rotates and flows, it can flow along the other side of the triangular prism, and try to avoid too many blocking blocks affecting the centrifugal rotation of the sand-water mixture.

[0046] In some embodiments, a sedimentation tank 130 is provided on the outside of the stirring tank 110 corresponding to the water outlet 1102 . The sedimentation tank 130 is in the shape of a conical funnel, and the upper half of the sedimentation tank 130 is connected to the water storage tank 60 .

[0047] In this embodiment, the sedimentation tank 130 and the stirring tank 110 can be integrated, and the sedimentation tank 130 is arranged below the stirring tank 110 to transfer the waste sand water discharged from the water outlet 1102. Among them, the conical funnel-shaped design is more conducive to the sedimentation of sand in the waste sand water, and the water precipitated above the sedimentation tank 130 can flow into the water storage tank 60.

[0048] In some embodiments, the sand and water concentration detection device 30 includes a cylinder 310 for filling sand and water samples. The cylinder 310 is placed vertically, and has a first preset height h1, a second preset height h2 and a third preset height h3 on its outer side along its height direction. A first sensor 320 is provided corresponding to the first preset height h1, a second sensor 330 is provided corresponding to the second preset height h2, and a third sensor 340 is provided corresponding to the third preset height h3, and a drain outlet 3103 is provided at the bottom of the cylinder 310 for docking with the mixing tank 110.

[0049] In this embodiment, the sand-water sample is part of the sandblasting material flowing in; by detecting the position of the sand material in the sand-water sample through the first sensor 320 and the second sensor 330 and controlling the volume of the sand-water sample entering the cylinder 310 through the third sensor 340, the automatic detection of the sand-water concentration can be realized. Specifically, when it is necessary to detect the sand-water concentration in the sandblasting material, the diversion pipeline is opened, and the sand-water sample is transported into the cylinder 310 through the diversion pipeline. When the liquid level of the sand-water sample reaches the third preset height h3, the third sensor 340 outputs a signal to control the stop of the sand-water sample from entering. After the sand material in the cylinder 310 has settled, the first sensor 320 and the second sensor 330 start to detect the sand material content. If the measured height of the sand material is lower than the second preset height h2, it means that the proportion of the sand material in the mixed sand-water in the mixing tank 110 is insufficient, and a signal is output to control the sand material supply device 40 to add sand material into the mixing tank 110. If the measured height of the sand material is higher than the second preset height h2, there is no need to add sand material into the mixing tank 110 through the sand material supply device 40. That is, under normal conditions, the concentration ratio of the sand material in the sandblasting material should not be lower than h1 / h3.

[0050] In some embodiments, the cylinder 310 is made of a transparent material, and the first sensor 320, the second sensor 330, and the third sensor 340 are photoelectric sensors.

[0051] Further, the first sensor 320, the second sensor 330, and the third sensor 340 each include a signal transmitting end and a signal receiving end, and the signal transmitting end and the signal receiving end are respectively arranged on both sides of the cylinder 310.

[0052] In this embodiment, the first sensor 320 and the second sensor 330 are both photoelectric sensors, and each sensor includes a signal transmitting end and a signal receiving end. The signal transmitting end and the signal receiving end are arranged on both sides outside the cylinder 310, and the cylinder 310 is made of a transparent material, such as transparent glass, transparent plastic, etc. During operation, the signal transmitting end of the sensor emits an optical signal, and the optical signal passes through the cylinder 310 and is received by the signal receiving end located on the other side of the cylinder 310. When the liquid level of the sand-water reaches the third preset height h3, since the sand-water mixture is opaque, it blocks the optical signal of the third sensor 340, so that the third sensor outputs a signal to the sandblasting machine. Similarly, after the sand material has settled, the sand material blocks the optical signal of the first sensor 320 or the second sensor 330, so that the first sensor 320 or the second sensor 330 outputs a signal.

[0053] In some embodiments, two liquid inlets 3101 are oppositely arranged at the top of the cylinder 310. Two liquid inlet areas are formed in the cylinder 310 corresponding to the two liquid inlets 3101. The third sensor 340 is arranged in a position-avoiding manner between the two liquid inlet areas, and a flow blocking groove 3102 is recessed in a partial area between the two liquid inlets 3101.

[0054] In this embodiment, the liquid inlet area formed by the liquid inlet hole is arranged away from the third sensor 340, so that the sand and water sample entering the cylinder 310 will not block the light signal emitted by the third sensor 340. There are two liquid inlet holes, and a blocking groove 3102 is provided in a part of the area between the two liquid inlet holes. The length of the blocking groove 3102 is greater than the size of the liquid inlet 3101, that is, both ends extend over the liquid inlet 3101. The sand and water sample enters from the liquid inlet 3101. Due to the fluidity of the liquid, the sand and water sample may diffuse to the outside of the liquid inlet 3101. Since the blocking groove 3102 is arranged between the two liquid inlets 3101, the diffused sand and water sample is blocked, and the third sensor 340 is prevented from sending an erroneous signal.

[0055] In some embodiments, a scale 350 for observing the position of the test sample is provided on the outside of the cylinder 310. The scale 350 is used to observe the concentration of sand and water in the cylinder 310 in real time. The concentration value of the scale 350 is set according to the volume of the cylinder 310, and the scale 350 is placed vertically on the outside of the cylinder 310.

[0056] In some embodiments, the sand supply device 40 includes a feed hopper 410, an adjustment control unit 420 and a second driving member 430. The second driving member 430 is connected to the adjustment control unit 420 for driving the adjustment control unit 420 to rotate. The adjustment control unit 420 is alternately provided with blocking portions 4201 and recessed portions 4202 on its circumferential side along the rotation direction. The blocking portions 4201 and the recessed portions 4202 are connected to the outlet end of the feed hopper 410.

[0057] In this embodiment, the sand can be stored in the discharge hopper 410 by manual or mechanical feeding, and the sand can be discharged from the outlet end based on its own gravity. In the process of gradual rotation of the control unit 420, the discharge state of the sand supply mechanism 40 can be controlled. It can be understood that when the blocking part 4201 is facing the outlet end, the blocking part 4201 completely or partially blocks the outlet end, the feeding funnel 410 is in a closed or semi-closed state, and the sand supply device 40 will not feed or will feed slowly; during the continued rotation of the adjustment control unit 420, the recessed part 4202 adjacent to the blocking part 4201 gradually docks with the outlet end, and the feeding funnel 410 will drop part of the sand into the recessed cavity of the recessed part 4202 through the outlet end, and when the recessed part 4202 rotates to the side of the adjustment control unit 420 opposite to the feeding funnel 410, the stored sand is poured into the mixing tank 110; after the adjustment control unit 420 continues to rotate, the blocking part 4201 gradually docks with the outlet end, and the feeding funnel 410 will be closed or semi-closed again.

[0058] Among them, the second driving member 430 can be a rotary motor, and the feeding speed of the abrasive supply device 40 can be adjusted by controlling the rotation speed of the rotary motor. Exemplarily, when the rotation speed of the rotary motor is slow, not only the speed of the blocking portion 4201 rotating to the recessed portion 4202 is slow, but also the speed of the recessed portion 4202 rotating to the side of the regulating member 420 opposite to the feeding funnel 410 is slow, and thus the rate of pouring the abrasive into the mixing tank 110 is slow; when the rotation speed of the rotary motor is fast, both the feeding speed of the feeding funnel 410 and the pouring speed of the regulating member 420 will be increased, and thus the feeding speed of the abrasive supply mechanism 40 will also be increased.

[0059] In some embodiments, the abrasive supply mechanism 40 further includes a fixed housing 440, which is used to stably mount the feeding funnel 410, the regulating member 420 and the driving member. On the side of the fixed housing 440 facing the mixing tank 110, there is a feeding port for adding the abrasive to the mixing tank 110, and the abrasive in the recessed portion 4202 is discharged through the feeding port.

[0060] In some embodiments, the spraying assembly 50 includes a hydrocyclone 510 and a spraying gun 520. The water inlet end 5101 of the hydrocyclone 510 is docked with the water outlet end 5102 of the water storage tank 60. The water outlet end of the hydrocyclone 510 is communicated with the spraying gun 520, and the sand discharging end 5103 of the hydrocyclone 510 is connected to the mixing tank 110.

[0061] Among them, two hydrocyclones 510 can be provided. The hydrocyclone 510 uses the principle of centrifugal separation to remove sand. The water flow with relatively few impurities is finally used to clean the sandblasted workpiece through the connected spraying gun 520. The hydrocyclone 510 is arranged above the mixing tank 110. After the sand discharging end 5103 of the hydrocyclone 510 is opened, the filtered sand can directly fall into the mixing tank 110 under the action of its own gravity for re-stirring and separation, further improving the utilization rate of sand and water.

[0062] In some embodiments, the side wall of the mixing tank 110 is provided with a filtering port 1104 for filtering fine sand. The filtering port 1104 is detachably installed with a filter net, and the water inlet 1103 is arranged facing the filtering port 1104.

[0063] In this embodiment, the filtering port 1104 is used to filter the fine sand whose particle size of the abrasive does not reach the specified range. During the mixing process, also based on the action of centrifugal force, when the abrasive rotates to the filtering port 1104, the small-particle-size abrasive (fine sand) will be filtered from the filtering port 1104 to the outside of the mixing tank 110, thereby increasing the proportion of the large-particle-size abrasive (coarse sand) in the sandblasting material obtained at the discharge port 1101, and further improving the sandblasting effect and efficiency.

[0064] Among them, the filtered fine sand includes some unqualified sand materials provided by the sand supply device 40 and the sand materials that have been worn during the sandblasting process. The operator can replace the filter screens with different mesh numbers according to actual needs. Exemplarily, the particle size of the sand material shall not be less than 0.7 mm, and at this time, a 25-mesh filter screen can be selected; when the particle size of the sand material shall not be less than 0.6 mm, a 30-mesh filter screen can be selected.

[0065] During the continuous filtering process, it is inevitable that sand materials will adhere to the filter screen, resulting in blockage of the filter screen. In this embodiment, the water inlet 1103 is arranged opposite to the filter screen. When adding water, the impact force of the water flow can be used to clean the sand materials adhering to the filter screen, thereby ensuring the fine sand filtering effect.

[0066] In some embodiments, a fine sand receiving tank 80 is provided outside the mixing tank 110 corresponding to the filtering port 1104. The fine sand receiving tank 80 is used for sedimentation separation of water and fine sand, and a reflux pipeline 1105 is provided between the fine sand receiving tank 80 and the mixing tank 110.

[0067] In this embodiment, when filtering fine sand and flushing the sand materials adhering to the filter screen with water, some medium water will also be discharged from the filtering port 1104. To avoid waste of water resources, a reflux system can be set up to reflux the water precipitated in the fine sand receiving tank 80 back to the first receiving tank through the reflux system. Among them, reflux pipelines 1105 are provided on both the fine sand receiving tank 80 and the mixing tank 110, and the reflux system is arranged between the two reflux pipelines 1105.

[0068] In some embodiments, the reflux assembly 70 includes a sand-water collection device and a reflux pump 710. One end of the reflux pump 710 is connected to the water inlet 1103, and the other end is connected to the sand-water collection device. The sand-water collection device is arranged at the sandblasting station and is used for concentrating the sand-water mixture at the sandblasting station and pumping it into the mixing tank 110 by the reflux pump 710.

[0069] Refer to Figure 1 、 Figure 8 As shown in [relevant figures], in some embodiments, the reflux assembly 70 includes a sand-water collection device (not shown in the attached drawings) and a reflux pump 710. One end of the reflux pump 710 is connected to the water inlet 1103, and the other end is connected to the sand-water collection device. The sand-water collection device is arranged at the sandblasting station. Among them, the sand-water collection device can be designed as a funnel-shaped collector arranged below the sandblasting station. The sand materials and water at the sandblasting station will concentrate the sand-water mixture at the sandblasting station based on the inclined surface of the funnel shape and pump it into the mixing tank 110 by the reflux pump 710.

[0070] In summary, the sand water circulation supply system provided by the technical solution of the present invention has the following sand water reflux paths:

[0071] (1) After the sandblasting material discharged from the mixing tank 110 through the discharge port 1101 is used to perform sandblasting on the workpiece through the sandblasting gun 210, it will flow back into the mixing tank 110 through the reflux assembly 70;

[0072] (2) The waste sand water discharged from the mixing tank 110 through the water storage port is filtered by the hydrocyclone 510. Among them, after the filtered water flow is used to wash the workpiece through the spray gun 520, it will flow back into the mixing tank 110 through the reflux assembly 70, and the filtered sand material (with part of the water) will flow back into the mixing tank 110 through the sand discharge end 5103;

[0073] (3) After the sandblasting material passing through the sand-water concentration detection device has completed the detection of the proportion of the sand material concentration in the sandblasting material, it can flow back into the mixing tank 110 through the drain port 3103;

[0074] (4) The water discharged through the filter port 1104, after the sand-water separation in the fine sand holding tank 80, part of the separated water can be returned to the mixing tank 110 through the reflux system.

[0075] And it can automatically add sand material and water into the mixing tank 110 according to the detection results of the sand-water concentration detection device 30 and the liquid level sensing detection component 610.

[0076] Therefore, the present invention can not only monitor the proportion of the concentration of sand and water and achieve the function of automatic feeding, but also the technical solution of the present invention can greatly improve the utilization efficiency of sand and water in the sandblasting equipment, achieving the technical effects of environmental protection, energy saving and cost reduction.

[0077] The above are only partial or preferred embodiments of the present invention. Whether in terms of text or drawings, the scope of protection of the present invention cannot be limited thereby. All equivalent structural transformations made by using the content of the specification and drawings of the present invention under the overall concept of the present invention, or directly / indirectly applied in other related technical fields are included in the scope of protection of the present invention.

Claims

1. An automatic wet sandblasting device with high utilization rate of sand water circulation, characterized in that, Including: A sand-water separation device, including a stirring tank and a stirring mechanism arranged in the stirring tank. The stirring tank is used to hold a sand-water mixture. The stirring tank is provided with a discharge port for obtaining sandblasting raw materials and a water outlet for discharging waste sand water. A sandblasting assembly, with one end connected to the discharge port and the other end corresponding to a workpiece at the sandblasting station. The sandblasting assembly is used to perform sandblasting on the workpiece based on the sandblasting material discharged from the discharge port. The sandblasting assembly is connected with a sand-water concentration detection device through a shunt pipeline. The sand-water concentration detection device is used to detect the proportion of the sand material concentration in the sandblasting material. A sand material supply device, arranged above the stirring tank. The sand material supply device is used to supply sand material to the stirring tank when the proportion of the sand material concentration detected by the sand-water concentration detection device is lower than the concentration threshold. A spraying assembly, with one end connected to the water outlet and the other end corresponding to a workpiece at the sandblasting station. The spraying assembly is used to filter the waste sand water discharged from the water outlet and then spray and wash the workpiece. Among them, a water storage tank with a liquid level sensing detection component is arranged between the spraying assembly and the water outlet. The liquid level sensing detection component is used to detect the liquid level in the water storage tank and control an external water addition device to add water to the water storage tank when the liquid level in the water storage tank is lower than the liquid level threshold. And, A reflux assembly. The stirring tank is also provided with a water inlet. One end of the reflux assembly is connected to the water inlet and the other end is connected to the sandblasting station. The reflux assembly is used to reflux the sand-water mixture formed at the sandblasting station back into the stirring tank. The sand-water concentration detection device includes a cylinder for filling sand-water samples. The cylinder is placed vertically. The outer side of the cylinder has a first preset height, a second preset height, and a third preset height along the height direction of the cylinder. A first sensor is provided corresponding to the first preset height, a second sensor is provided corresponding to the second preset height, and a third sensor is provided corresponding to the third preset height. And a drain port connected to the stirring tank is arranged at the bottom of the cylinder. The spraying assembly includes a hydrocyclone and a spraying gun. The water inlet end of the hydrocyclone is connected to the water outlet end of the water storage tank. The water outlet end of the hydrocyclone is connected to the spraying gun. And the sand discharge end of the hydrocyclone is connected to the stirring tank. The reflux assembly includes a sand-water collection device and a reflux pump. One end of the reflux pump is connected to the water inlet and the other end is connected to the sand-water collection device. The sand-water collection device is arranged at the sandblasting station and is used to concentrate the sand-water mixture at the sandblasting station and pump it into the stirring tank by the reflux pump.

2. The automatic wet sandblasting equipment with high sand water circulation utilization rate according to claim 1, characterized in that, The stirring mechanism includes a vertically placed stirring shaft and a first driving member for driving the stirring shaft to rotate. A plurality of stirring members are arranged near the bottom of the stirring tank on the stirring shaft.

3. The automatic wet sandblasting equipment with high sand water circulation utilization rate according to claim 2, characterized in that The stirring shaft is designed with a hollow cavity. The bottom of the stirring shaft penetrates through the water outlet and the cavity communicates with the water storage tank. Among them, a plurality of water outlet holes are arranged near the upper part of the stirring shaft, and the water outlet holes communicate with the cavity.

4. The automatic wet sandblasting equipment with high sand water circulation utilization rate according to claim 1, characterized in that, Two liquid inlets are relatively arranged at the top of the cylinder, and two liquid inlet areas are formed in the cylinder corresponding to the two liquid inlets. The third sensor is arranged between the two liquid inlet areas, and a flow blocking groove is formed in a partial area between the two liquid inlets.

5. The automatic wet sandblasting equipment with high sand water circulation utilization rate according to claim 1, characterized in that, The sand material supply device includes a feeding funnel, an adjustment control unit and a second driving unit, wherein the second driving unit is connected to the adjustment control unit and is used to drive the adjustment control unit to rotate. The adjustment control unit is provided with blocking parts and recessed parts alternately arranged on its circumference along the rotation direction, and the blocking parts and the recessed parts are connected to the outlet end of the feeding funnel.

6. The automatic wet sandblasting equipment with high sand water circulation utilization rate according to claim 1, characterized in that The side wall of the mixing tank is provided with a filter port for filtering fine sand, the filter port is detachably provided with a filter screen, and the water inlet is arranged toward the filter port.

7. The automatic wet sandblasting equipment with a high utilization rate of sand water circulation according to claim 6, characterized in that, A fine sand containing tank is provided outside the mixing tank corresponding to the filter port, the fine sand containing tank is used for settling and separating water and fine sand, and a reflux pipe is provided between the fine sand containing tank and the mixing tank.

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