A front-mixed abrasive water jet machining device and method for tungsten plate cutting

Abstract

The present invention discloses a front-mixed abrasive water jet machining device and method for tungsten plate cutting, belonging to the technical field of front-mixed abrasive water jets. The present invention is used to solve the technical problems that the amount of abrasive in the abrasive box gradually decreases, the feeding concentration constantly changes, resulting in shutdown for feeding, multiple and time-consuming repeated feeding processes; when water jet cutting, the bottom plate in contact with the tungsten plate is easily cut synchronously, resulting in a large replacement cost. The present invention includes a processing table, and a water storage tank is fixedly installed at a corner of the top of the processing table, and a supercharger is fixedly installed at one end of the water storage tank. The present invention adjusts the flow rate of clear water passing through the check valve I through the regulating valve to assist the first conveying pipe, and uses siphon traction to draw the abrasive in the leakage tank into the first conveying pipe to be preliminarily mixed with the clear water; the high-pressure clear water is sprayed on the stirring paddle blades through the check valve II to assist the stirring paddle to accelerate axial rotation, and at the same time, the high-pressure clear water combines with the stirring paddle to promote the secondary mixing of the mixed water and the clear water input into the mixing tank in proportion.

Description

Technical Field

[0001] The present invention relates to the technical field of pre-mixed abrasive water jets, and particularly to a pre-mixed abrasive water jet processing device and method for tungsten plate cutting. Background Art

[0002] An abrasive water jet is a high-energy beam jet formed by mixing abrasive particles with high-speed flowing water and passing through a nozzle. Since a certain number of abrasive particles are mixed into the high-speed water, the flow characteristics of the jet and the way of acting on an object are changed. The water jet serves as an abrasive carrier, transferring the kinetic energy of the high-pressure water jet beam to the abrasive particles, changing the static pressure action of the constant-velocity core of the continuous water jet on an object into a high-frequency erosion and grinding action on the object, and greatly improving the working efficiency of the jet. Since the abrasive water jet is a cold-state single-point kinetic energy source, it has a strong erosion effect on materials and does not change the mechanical, physical, and chemical properties of the materials during the erosion process. Therefore, it has unique cleaning, crushing, and cutting properties and can be used for cutting heat-sensitive, pressure-sensitive, brittle, plastic, composite materials, and flammable and explosive materials;

[0003] Tungsten is a difficult-to-machine metal material with the characteristics of high hardness (HM7.5), high density (19.35 g / cm 3 ), and high melting point (3410 °C). When using an abrasive water jet device to cut a tungsten plate formed by rolling, due to the characteristics of the tungsten plate itself, the processing and cutting are very time-consuming. The existing pre-mixed abrasive water jet abrasive mixing device relies on the self-weight of the abrasive and the pressure difference of the balanced water path to make the abrasive enter the mixing chamber located at the lower part of the high-pressure abrasive tank and mix with the high-pressure water. Under long-term continuous use, the capacity of the abrasive box is limited, the amount of abrasive in the abrasive box gradually decreases, and the feeding concentration constantly changes, resulting in multiple and time-consuming processes of stopping the machine to add abrasive and repeated feeding; when the existing water jet cuts, it is easy to synchronously cut the bottom plate in contact with the tungsten plate, resulting in a large replacement cost;

[0004] In view of the above technical defects, a solution is proposed now. Summary of the Invention

[0005] The purpose of the present invention is to provide a pre-mixed abrasive water jet processing device and method for tungsten plate cutting to solve the problems that the capacity of the abrasive box is limited, the amount of abrasive in the abrasive box gradually decreases, the feeding concentration constantly changes, resulting in multiple and time-consuming processes of stopping the machine to add abrasive and repeated feeding; when the existing water jet cuts, it is easy to synchronously cut the bottom plate in contact with the tungsten plate, resulting in a large replacement cost.

[0006] The purpose of the present invention can be achieved through the following technical solutions: a pre-mixed abrasive water jet processing device and method for tungsten plate cutting, including a processing table, a water storage tank is fixedly installed at one corner of the top of the processing table, a supercharger is fixedly installed at one end of the water storage tank, a return water tank is fixedly connected to the side of the supercharger, a mixing box is fixedly connected to one end of the supercharger, the mixing box includes a stirring paddle, a water inlet pipe and a feed pipe 2 are arranged in a ring on the side of the stirring paddle, an abrasive box 1 and an abrasive box 2 are symmetrically installed on both sides of the mixing box, a leakage groove is provided inside the abrasive box 1, a feed pipe 1 connected to the feed pipe 2 is provided at the bottom of the abrasive box 1, and a cutting groove is provided on one side of the abrasive box 1;

[0007] The cutting groove includes a bottom plate, and a plurality of leakage holes and a second slide groove are provided on the bottom plate body. A plurality of top rods are sleeved on the top of the leakage holes. A sliding sleeve is slidably connected inside the second slide groove, and a telescopic rod is sleeved on the top of the sliding sleeve. A water collecting groove is provided on the bottom wall of the cutting groove, and a filter plate is arranged between the water collecting groove and the bottom plate. Water jet mechanisms are slidably provided on both sides of the cutting groove.

[0008] Preferably, a circulation pump connected to the return water tank is provided on one side of the interior of the supercharger, an output end of the circulation pump is connected to the water storage tank, and a high-pressure pump connected to the water storage tank is installed in parallel on one side of the circulation pump.

[0009] Preferably, the abrasive box 1 and the abrasive box 2 have the same structure, the top of the abrasive box 1 is sealed with a cover, the leakage groove is conical, and a check valve 1 is provided at the bottom of the leakage groove, the bottom of the check valve 1 is connected with a sleeve of the feed pipe, the other end of the feed pipe 1 is flange-connected to the output end of the high-pressure pump, and a regulating valve connected to the feed pipe 1 is provided at the bottom of the outer wall of the abrasive box 1.

[0010] Preferably, the stirring paddle is mounted in the middle of one side of the inner cavity of the mixing box, a driving motor rotatably connected to the stirring paddle is installed in the inner cavity on the other side of the mixing box, multiple groups of check valves two facing the stirring paddle are arranged on the inner wall of one side of the mixing box, the multiple groups of check valves two are respectively connected to the water inlet pipe and the feed pipe two, the other end of the water inlet pipe is flange-connected to the output end of the high-pressure pump, and an external valve is penetrated on the outer wall of the mixing box on the side close to the cutting groove.

[0011] Preferably, a ceramic filter element is sleeved in the middle of one side of the inner cavity of the return water tank, a plurality of water pipes connected to a circulation pump are provided on the inner cavity wall of the return water tank, and the bottom of the return water tank is connected to the water collecting tank through the water pipe.

[0012] Preferably, the bottom plate is clamped in the middle of the cutting groove, and multiple groups of leakage holes are arranged in an array with equal spacing. The aperture of the leakage holes is larger at the top and smaller at the bottom. A filter sleeve is provided at the bottom of the top rod and is sleeved with the leakage holes. The top plate of the top rod is sleeved with a rubber sleeve, and the top plate of the filter sleeve is sleeved with a sleeve plate in contact with the bottom plate.

[0013] Preferably, the second chute is cross-shaped and formed on the bottom plate body. A slide bar slidably sleeved with the sliding sleeve is erected in the middle of the second chute. The bottom of the telescopic rod penetrates through the sliding sleeve and is slidably connected therein. A spring member contacting the sliding sleeve is sleeved on the bottom rod body of the telescopic rod. A limiting block is arranged at the top of the telescopic rod.

[0014] Preferably, first chutes are symmetrically formed on both sides of the cutting groove. Sliding blocks I slidably connected with the first chutes are arranged on both sides of the water jet mechanism. A column is fixedly installed at the top of the sliding block I. A sliding frame is slidably arranged on the side wall of the column. A sliding block II is slidably connected to the sliding frame of the sliding block II. An electric push rod is fixedly installed on the side wall of the sliding block II. A nozzle is flange-connected to the bottom of the electric push rod. A protective cover is clamped on the side of the nozzle. A connecting pipe connected to the nozzle penetrates through the top of one side of the electric push rod. The other end of the connecting pipe is flange-connected to an external valve.

[0015] A pre-mixed abrasive water jet machining method for tungsten plate cutting comprises the following steps:

[0016] Step 1: A plurality of ejector rods are arranged and fixed on the sleeve plate according to the tungsten plate cutting route. The sleeve plate is secondarily fixed by sleeving a filter sleeve with a leakage hole on the bottom plate. The tungsten plate is stably placed in the cutting groove. The ejector rod contacts the tungsten plate through a rubber sleeve, which is not only used for anti-slip support of the tungsten plate, but also used to prevent the water jet cutting from passing through the tungsten plate, causing damage to the support part and reducing the replacement cost of the support part. Push a plurality of sliding sleeves close to the side of the tungsten plate, and pull the telescopic rod along the axial direction of the sliding sleeve. The limiting block at the top of the telescopic rod is clamped with the side of the tungsten plate. At the same time, the spring member at the bottom of the telescopic rod is compressed to push the telescopic rod to slide along the axial direction of the sliding sleeve, so as to fix the tungsten plate in the cutting groove, and avoid the tungsten plate shaking and displacing during water jet cutting, affecting the water jet cutting accuracy of the tungsten plate.

[0017] Step 2: Start the operation of the supercharger. The high-pressure pump extracts clear water from the water storage tank and divides it into the first feeding pipe and the water inlet pipe. The flow rate of the clear water in the first feeding pipe is adjusted by a regulating valve. When the clear water in the first feeding pipe passes through the first check valve, the abrasive in the leakage tank is drawn into the first feeding pipe by siphonage to be preliminarily mixed with the clear water. The first feeding pipe is connected to the second feeding pipe, and the second feeding pipe delivers the mixed water into the mixing tank through the second check valve. The drive motor in the mixing tank drives the stirring paddle to rotate. The water inlet pipe guides the high-pressure clear water to enter the mixing tank through the second check valve. The high-pressure clear water is sprayed on the blades of the stirring paddle through the second check valve to assist the stirring paddle to accelerate its axial rotation. At the same time, the high-pressure clear water combines with the stirring paddle to promote the proportional secondary mixing of the mixed water and the clear water input into the mixing tank. When the abrasive in the first abrasive tank is insufficient, open the regulating valve on the side of the second abrasive tank and close the regulating valve on the side of the first abrasive tank. The second abrasive tank continuously provides mixed water for the mixing tank. Open the top cover of the first abrasive tank to add abrasive to the inside of the first abrasive tank, realizing continuous replacement of abrasive without stopping the machine, ensuring the continuous processing efficiency of the water jet. The mixing tank is connected to the connecting pipe through an external valve to continuously provide high-pressure water flow for the nozzle. The water jet mechanism slides axially back and forth along the first chute through the first slider, slides up and down axially along the column through the sliding frame, and slides left and right axially along the frame body of the sliding frame through the second slider. The electric push rod expands and contracts to adjust the distance between the nozzle and the tungsten plate. The protective cover is sleeved around the nozzle to prevent the cutting water flow and the tungsten plate debris from rebounding and splashing;

[0018] Step 3: The cut water flow slides down along the ejector rod onto the bottom plate and accumulates on the bottom plate. The water flow is preliminarily filtered by the filter sleeve and seeps into the leakage holes through the gaps of the filter sleeve. The water flow drips onto the filter plate along the leakage holes for secondary filtration and seepage, and then drips onto the bottom wall of the cutting groove. It accumulates at the water collecting tank along the bottom wall of the cutting groove. The water delivery pipe in the water return tank is communicated with the water collecting tank. The circulating pump operates to provide suction for the water delivery pipe, extracting and delivering the water flow collected in the water collecting tank into the water return tank. The water flow is purified three times by the ceramic filter element, and the purified water flow in the water return tank is delivered into the water storage tank by the circulating pump, realizing multiple purification and recycling of the water used for the water jet, saving water cost, reducing water pollution, and realizing the recovery of metal debris and abrasive during the cutting of the tungsten plate.

[0019] Advantages of the present invention:

[0020] (1) The present invention adjusts the flow rate of clear water passing through the check valve I through the regulating valve and the auxiliary material conveying pipe I, and uses siphon to draw the abrasive in the leakage tank into the material conveying pipe I for preliminary mixing with the clear water, and then enters the mixing tank along the material conveying pipe II. The water inlet pipe guides the high-pressure clear water to enter the mixing tank through the check valve II. The high-pressure clear water is sprayed on the stirring paddle blades through the check valve II to assist the stirring paddle to accelerate the axial rotation. At the same time, the high-pressure clear water combines with the stirring paddle to promote the secondary mixing of the mixed water and the clear water input into the mixing tank in proportion. The mixing tank provides water source for the nozzle through the external valve and the connecting pipe. The water jet mechanism adjusts the movement of the nozzle above the tungsten plate and the distance between the nozzle and the tungsten plate. A protective cover is arranged around the nozzle to prevent the cutting water flow and the tungsten plate debris from rebounding and splashing.

[0021] (2) A plurality of groups of ejector rods are arranged and fixed on the sleeve plate according to the cutting route of the tungsten plate, which is not only used for anti-slip support of the tungsten plate, but also used to prevent the water jet cutting from passing through the tungsten plate, causing damage to the support part and reducing the replacement cost of the support part. The limit block at the top of the telescopic rod is clamped with the side of the tungsten plate to fix the tungsten plate in the cutting groove, avoiding the shaking and displacement of the tungsten plate during water jet cutting and affecting the water jet cutting accuracy of the tungsten plate. The cut water passes through the filter sleeve, the filter plate and the ceramic filter element, and is pumped by the circulating pump to the return water tank and the water storage tank, realizing the multiple purification and recycling of the water used for water jet cutting, saving water cost, reducing water pollution, and realizing the recovery of metal debris and abrasive during tungsten plate cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings;

[0023] Figure 1 is a three-dimensional view of the overall structure of the present invention;

[0024] Figure 2 is a schematic cross-sectional structure view of the mixing tank of the present invention;

[0025] Figure 3 is a schematic top view of one side of the workbench of the present invention close to the mixing tank;

[0026] Figure 4 is a schematic top view of the bottom plate part of the present invention;

[0027] Figure 5 is a schematic side view of the cutting groove part of the present invention;

[0028] Figure 6 is a schematic side view of the water jet mechanism of the present invention.

[0029] Legend: 1. Processing table; 101. First chute; 2. Water storage tank; 3. First abrasive box; 301. Regulating valve; 302. Sealing cover; 303. Leakage trough; 304. First check valve; 305. First feeding pipe; 306. Second abrasive box; 4. Supercharger; 401. Circulation pump; 402. High-pressure pump; 5. Return water tank; 501. Water delivery pipe; 502. Ceramic filter element; 6. Cutting groove; 601. Bottom plate; 602. Leakage hole; 603. Sleeve plate; 604. Thrust rod; 605. Second chute; 606. Sliding sleeve; 607. Spring element; 608. Telescopic rod; 609. Limit block; 610. Filter plate; 611. Water collecting trough; 612. Filter sleeve; 613. Rubber sleeve; 614. Slide bar; 7. Water jet mechanism; 701. First slider; 702. Column; 703. Sliding frame; 704. Second slider; 705. Electric push rod; 706. Sprayer; 707. Protective cover; 708. Connecting pipe; 8. Mixing box; 801. Water inlet pipe; 802. Second check valve; 803. Second feeding pipe; 804. Stirring paddle. Specific implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1:

[0032] This embodiment is used to solve the problems of limited capacity of the abrasive box, gradual reduction of the amount of abrasive in the abrasive box, continuous change of the feeding concentration, resulting in shutdown for feeding, multiple and time-consuming repeated feeding processes.

[0033] Please refer to Figure 1-3 As shown in the figure, this embodiment is a pre-mixed abrasive water jet processing device and method for tungsten plate cutting, including a processing table 1. A water storage tank 2 is fixedly installed at one corner of the top of the processing table 1. A supercharger 4 is fixedly installed at one end of the water storage tank 2. A return water tank 5 is fixedly connected to the side of the supercharger 4. One end of the supercharger 4 is fixedly connected to a mixing box 8. The mixing box 8 includes a stirring paddle 804. The water inlet pipe 801 and the second feeding pipe 803 are arranged annularly on the side of the stirring paddle 804. The first abrasive box 3 and the second abrasive box 306 are symmetrically installed on both sides of the mixing box 8. A leakage trough 303 is arranged inside the first abrasive box 3. A first feeding pipe 305 connected to the second feeding pipe 803 is arranged at the bottom of the first abrasive box 3. The regulating valve 301 is used to assist the first feeding pipe 305 to adjust the flow rate of clean water passing through the first check valve. The siphon is used to draw the abrasive in the leakage trough 303 into the first feeding pipe 305 to be preliminarily mixed with clean water; a cutting groove 6 is arranged on one side of the first abrasive box 3.

[0034] A circulating pump 401 connected to the return water tank 5 is provided on one side of the booster 4 , and an output end of the circulating pump 401 is connected to the water storage tank 2 . A high-pressure pump 402 connected to the water storage tank 2 is installed in parallel on one side of the circulating pump 401 .

[0035] The abrasive box 1 3 has the same structure as the abrasive box 2 306. The top of the abrasive box 1 3 is sealed with a cover 302. The leakage groove 303 is conical and a check valve 1 304 is provided at the bottom of the leakage groove 303. The bottom of the check valve 1 304 is sleeved with a feed pipe 1 305. The other end of the feed pipe 1 305 is flange-connected to the output end of the high-pressure pump 402. A regulating valve 301 connected to the feed pipe 1 305 is provided at the bottom of the outer wall of the abrasive box 1 3.

[0036] The stirring paddle 804 is mounted in the middle of one side of the inner cavity of the mixing box 8, and a driving motor 805 rotatably connected to the stirring paddle 804 is installed in the inner cavity on the other side of the mixing box 8. A plurality of groups of check valves 802 facing the stirring paddle 804 are arranged on the inner wall of one side of the mixing box 8. The plurality of groups of check valves 802 are respectively connected to the water inlet pipe 801 and the feed pipe 803. The other end of the water inlet pipe 801 is flange-connected to the output end of the high-pressure pump 402. An external valve 806 is penetrated on the outer wall of the mixing box 8 close to the cutting groove 6.

[0037] A ceramic filter element 502 is sleeved in the middle of one side of the inner cavity of the return water tank 5. The filtration aperture of the ceramic filter element 502 is 400 meshes. A plurality of water pipes 501 connected to the circulation pump 401 are arranged on the inner cavity wall of the return water tank 5. The bottom of the return water tank 5 is connected to the water collecting tank 611 through the water pipes 501.

[0038] The regulating valve 301 is used to assist the feed pipe 1 305 in regulating the flow of clean water passing through the check valve 1, and the abrasive in the leakage groove 303 is drawn into the feed pipe 1 305 by siphon to be initially mixed with the clean water; the high-pressure clean water is sprayed onto the blades of the stirring paddle 804 through the check valve 2 802, and the stirring paddle 804 is assisted to accelerate the axial rotation. At the same time, the high-pressure clean water is combined with the stirring paddle 804 to promote the secondary mixing of the mixed water and the clean water input in the mixing box 8 in proportion.

[0039] Embodiment 2:

[0040] This embodiment is used to solve the problem that the bottom plate in contact with the tungsten plate is easily cut synchronously during the conventional water jet cutting, resulting in a large replacement cost.

[0041] See also Figure 1 , Figure 4 , Figure 5 , Figure 6As shown in the figure, the front-mixed abrasive water jet machining device and method for tungsten plate cutting in this embodiment. The cutting groove 6 includes a bottom plate 601. Multiple groups of leakage holes 602 and second chutes 605 are formed on the plate body of the bottom plate 601. Multiple groups of ejector rods 604 are sleeved on the top of the leakage holes 602. Multiple groups of ejector rods 604 are arranged and fixed on the sleeve plate 603 according to the tungsten plate cutting route, which is not only used for anti-slip support of the tungsten plate, but also used to prevent the water jet cutting from passing through the tungsten plate, causing damage to the support part and reducing the replacement cost of the support part; a sliding sleeve 606 is slidably connected inside the second chute 605. A telescopic rod 608 is sleeved on the top of the sliding sleeve 606. A water collecting groove 611 is formed on the bottom wall of the cutting groove 6. A filter plate 610 is arranged between the water collecting groove 611 and the bottom plate 601. The mesh aperture of the filter plate 610 is 200 mesh. Water jet mechanisms 7 are slidably arranged on both sides of the cutting groove 6.

[0042] The bottom plate 601 is clamped in the middle of the groove of the cutting groove 6. Multiple groups of leakage holes 602 are arranged in an equidistant array. The aperture of the leakage holes 602 is large at the top and small at the bottom. A filter sleeve 612 sleeved with the leakage hole 602 is arranged at the bottom of the ejector rod 604. A rubber sleeve 613 is sleeved on the top plate of the ejector rod 604. A sleeve plate 603 in contact with the bottom plate 601 is sleeved on the top plate of the filter sleeve 612. The mesh aperture of the filter sleeve 612 is 100 mesh.

[0043] The second chute 605 is formed in a cross shape on the plate body of the bottom plate 601. A sliding rod 614 slidably sleeved with the sliding sleeve 606 is arranged in the middle of the groove of the second chute 605. The bottom of the telescopic rod 608 passes through the sliding sleeve 606 and is slidably connected. A spring member 607 in contact with the sliding sleeve 606 is sleeved on the bottom rod body of the telescopic rod 608. A limit block 609 is arranged at the top of the telescopic rod 608.

[0044] First chutes 101 are symmetrically formed on both sides of the cutting groove 6. Sliders 701 slidably connected with the first chutes 101 are arranged on both sides of the water jet mechanism 7. Columns 702 are fixedly installed on the tops of the sliders 701. A sliding frame 703 is slidably arranged on the side wall of the column 702. A slider 704 is slidably connected on the frame of the sliding frame 703. An electric push rod 705 is fixedly installed on the side wall of the slider 704. A spray head 706 is flange-connected to the bottom of the electric push rod 705. A protective cover 707 is clamped on the side of the spray head 706. A connecting pipe 708 connected to the spray head 706 is arranged through the top of one side of the electric push rod 705. The other end of the connecting pipe 708 is flange-connected to an external valve 806.

[0045] Multiple groups of ejector rods 604 are arranged and fixed on the sleeve plate 603 according to the tungsten plate cutting route, which is not only used for anti-slip support of the tungsten plate, but also used to prevent the water jet cutting from passing through the tungsten plate, causing damage to the support part and reducing the replacement cost of the support part; the limit block 609 at the top of the telescopic rod 608 is clamped with the side of the tungsten plate to prevent the tungsten plate from shaking and displacing during water jet cutting; the water after cutting passes through the filter sleeve, the filter plate and the ceramic filter element, and is pumped by the circulation pump and transported to the return water tank and the water storage tank to realize multiple purification and recycling of the water used for water jet.

[0046] As Figure 1-6 shown, a pre-mixed abrasive water jet machining method for tungsten plate cutting includes the following steps:

[0047] Step 1: Multiple sets of ejector rods 604 are arranged and fixed on the sleeve plate 603 according to the tungsten plate cutting route. The sleeve plate 603 is secondarily fixed by being sleeved with the leakage holes 602 on the bottom plate 601 through the filter sleeve 612. The tungsten plate is stably placed in the cutting groove 6. The ejector rods 604 are in contact with the tungsten plate through the rubber sleeves 613, which are not only used for anti-slip support of the tungsten plate but also for preventing the water jet cutting from passing through the tungsten plate, causing damage to the support part and reducing the replacement cost of the support part. Push multiple sets of sliding sleeves 606 close to the side of the tungsten plate, and pull the telescopic rod 608 axially along the sliding sleeve 606, so that the limit block 609 at the top of the telescopic rod 608 is clamped with the side of the tungsten plate. At the same time, the spring member 607 at the bottom of the telescopic rod 608 is compressed to push the telescopic rod 608 to slide axially along the sliding sleeve 606, realizing the fixation of the tungsten plate in the cutting groove 6 and preventing the tungsten plate from shaking and displacing during water jet cutting, which affects the water jet cutting accuracy of the tungsten plate;

[0048] Step 2: Start the operation of the supercharger 4. The high-pressure pump 402 extracts clear water from the water storage tank 2 and divides it into the first feed pipe 305 and the water inlet pipe 801. The flow rate of the clear water in the first feed pipe 305 is adjusted by the regulating valve 301. When the clear water in the first feed pipe 305 passes through the first check valve 304, the abrasive in the leakage tank 303 is drawn into the first feed pipe 305 by siphon to be preliminarily mixed with the clear water. The first feed pipe 305 is connected to the second feed pipe 803. The second feed pipe 803 transports the mixed water to the mixing tank 8 through the second check valve 802. The driving motor in the mixing tank 8 drives the stirring paddle 804 to rotate. The water inlet pipe 801 guides the high-pressure clear water to enter the mixing tank 8 through the second check valve 802. The high-pressure clear water is sprayed on the blades of the stirring paddle 804 through the second check valve 802, assisting the stirring paddle 804 to accelerate axial rotation. At the same time, the high-pressure clear water combines with the stirring paddle 804 to promote the proportional secondary mixing of the mixed water and the clear water input into the mixing tank 8. When the abrasive in the first abrasive tank 3 is insufficient, open the regulating valve 301 on the side of the second abrasive tank 306 and close the regulating valve 301 on the side of the first abrasive tank 3. The second abrasive tank 306 continuously provides mixed water for the mixing tank 8. Open the top cover 302 of the first abrasive tank 3 to add abrasive to the inside of the first abrasive tank 3, realizing continuous replacement of the abrasive without stopping the machine, ensuring the continuous processing efficiency of the water jet. The mixing tank 8 is connected to the connecting pipe 708 through an external valve to continuously provide high-pressure water flow for the nozzle 706. The water jet mechanism 7 slides axially back and forth along the chute 101 through the first slider 701, slides up and down along the column 702 axially by the sliding frame 703, and the second slider 704 slides left and right along the axial direction of the sliding frame 703. The electric push rod 705 expands and contracts to adjust the distance between the nozzle 706 and the tungsten plate. The protective cover 707 is sleeved around the nozzle 706 to prevent the cutting water flow and the tungsten plate debris from rebounding and splashing;

[0049] Step 3: The cut water flow slides down along the ejector rod 604 onto the bottom plate 601 and converges on the bottom plate 601. The water flow is preliminarily filtered by the filter sleeve 612 and seeps into the leakage holes 602 through the gaps of the filter sleeve 612. The water flow drips onto the filter plate 610 along the leakage holes 602, and after secondary filtration and leakage, it drips onto the bottom wall of the cutting groove 6. It converges at the water collecting tank 611 along the bottom wall of the cutting groove 6. The water delivery pipe 501 in the water return tank 5 is communicated with the water collecting tank 611. The circulation pump 401 operates to provide suction for the water delivery pipe 501, and pumps the water flow converged in the water collecting tank 611 into the water return tank 5. The water flow is purified by the ceramic filter element 502 for three times, and the purified water flow in the water return tank 5 is delivered to the water storage tank 2 by the circulation pump 401, realizing the multiple purification and recycling of the water used for water jet, saving water cost, reducing water pollution, and realizing the recovery of metal chips and abrasives during tungsten plate cutting.

[0050] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A front-mixed abrasive water jet machining device for tungsten plate cutting, comprising a machining table (1), characterized in that, At one corner of the top of the processing table (1), a water storage tank (2) is fixedly installed. One end of the water storage tank (2) is fixedly installed with a supercharger (4). The side of the supercharger (4) is fixedly connected with a water return tank (5). One end of the supercharger (4) is fixedly connected with a mixing tank (8). The mixing tank (8) includes a stirring paddle (804). The side of the stirring paddle (804) is annularly arranged with a water inlet pipe (801) and a second material conveying pipe (803). On both sides of the mixing tank (8), an abrasive box one (3) and an abrasive box two (306) are symmetrically installed. Inside the abrasive box one (3), there is a leakage groove (303). At the bottom of the abrasive box one (3), there is a first material conveying pipe (305) connected to the second material conveying pipe (803). On one side of the abrasive box one (3), there is a cutting groove (6). The cutting groove (6) includes a bottom plate (601). Multiple groups of leakage holes (602) and a second sliding groove (605) are formed on the plate body of the bottom plate (601). Multiple groups of ejector rods (604) are sleeved on the top of the leakage holes (602). A sliding sleeve (606) is slidably connected inside the second sliding groove (605). A telescopic rod (608) is sleeved on the top of the sliding sleeve (606). A water collecting tank (611) is formed on the bottom wall of the cutting groove (6). A filter plate (610) is arranged between the water collecting tank (611) and the bottom plate (601). Water jet mechanisms (7) are slidably arranged on both sides of the cutting groove (6). The bottom plate (601) is clamped in the middle of the groove of the cutting groove (6). Multiple groups of the leakage holes (602) are arranged in an equidistant array. The aperture of the leakage holes (602) is larger at the top and smaller at the bottom. A filter sleeve (612) sleeved with the leakage holes (602) is arranged at the bottom of the ejector rod (604). A rubber sleeve (613) is sleeved on the top plate of the ejector rod (604). A sleeve plate (603) contacting the bottom plate (601) is sleeved on the top plate of the filter sleeve (612).

2. The pre-mixed abrasive water jet machining device for tungsten plate cutting according to claim 1, characterized in that, Inside one side of the supercharger (4), there is a circulating pump (401) communicated with the water return tank (5). The output end of the circulating pump (401) is communicated with the water storage tank (2). A high-pressure pump (402) communicated with the water storage tank (2) is installed in parallel on one side of the circulating pump (401).

3. The pre-mixed abrasive water jet machining device for tungsten plate cutting according to claim 1, characterized in that, The abrasive box one (3) has the same structure as the abrasive box two (306). The top of the abrasive box one (3) is hermetically sleeved with a cover (302). The leakage groove (303) is conical, and a check valve one (304) is arranged at the bottom of the leakage groove (303). The bottom of the check valve one (304) is sleeved with the first material conveying pipe (305). The other end of the first material conveying pipe (305) is flange-connected with the output end of the high-pressure pump (402). A regulating valve (301) connected to the first material conveying pipe (305) is arranged at the bottom of the outer wall of the abrasive box one (3).

4. The pre-mixed abrasive water jet machining device for tungsten plate cutting according to claim 1, characterized in that, The stirring paddle (804) is installed in the middle of one side of the inner cavity of the mixing tank (8). A driving motor (805) rotatably connected to the stirring paddle (804) is installed in the inner cavity of the other side of the mixing tank (8). A plurality of check valves II (802) facing the stirring paddle (804) are arranged on the inner wall of one side of the mixing tank (8). The plurality of check valves II (802) are respectively connected to the water inlet pipe (801) and the second material conveying pipe (803). The other end of the water inlet pipe (801) is flange-connected to the output end of the high-pressure pump (402). An external valve (806) is provided through the outer wall of the mixing tank (8) near the cutting groove (6).

5. The pre-mixed abrasive water jet machining device for tungsten plate cutting according to claim 1, wherein, A ceramic filter element (502) is sleeved in the middle of one side of the inner cavity of the water return tank (5). A plurality of water conveying pipes (501) connected to the circulating pump (401) are provided on the inner cavity wall of the water return tank (5). The bottom of the water return tank (5) is communicated with the water collecting tank (611) through the water conveying pipe (501).

6. The pre-mixed abrasive water jet machining device for tungsten plate cutting according to claim 1, characterized in that, The second chute (605) is formed in a cross shape on the plate body of the bottom plate (601). A sliding rod (614) slidably sleeved with the sliding sleeve (606) is installed in the middle of the second chute (605). The bottom of the telescopic rod (608) penetrates through the sliding sleeve (606) and is in sliding connection. A spring member (607) contacting the sliding sleeve (606) is sleeved on the bottom rod body of the telescopic rod (608). A limiting block (609) is provided at the top of the telescopic rod (608).

7. The pre-mixed abrasive water jet machining device for tungsten plate cutting according to claim 1, wherein, Chutes I (101) are symmetrically opened on both sides of the cutting groove (6). Sliders I (701) slidably connected to the chutes I (101) are provided on both sides of the water jet mechanism (7). A column (702) is fixedly installed at the top of the slider I (701). A sliding frame (703) is slidably arranged on the side wall of the column (702). A slider II (704) is slidably connected to the frame of the sliding frame (703). An electric push rod (705) is fixedly installed on the side wall of the slider II (704). The bottom of the electric push rod (705) is flange-connected to a spray head (706). A protective cover (707) is clamped on the side of the spray head (706). A connecting pipe (708) connected to the spray head (706) is provided through the top of one side of the electric push rod (705). The other end of the connecting pipe (708) is flange-connected to the external valve (806).

8. A pre-mixed abrasive water jet machining method for tungsten plate cutting, characterized in that, It includes the following steps: Step 1: A plurality of ejector rods (604) are arranged and fixed on the sleeve plate (603) according to the tungsten plate cutting route. The sleeve plate (603) is secondarily fixed by being sleeved with the leakage holes (602) on the bottom plate (601) through the filter sleeve (612). The tungsten plate is stably placed in the cutting groove (6). The ejector rods (604) contact the tungsten plate through the rubber sleeves (613). Push a plurality of sliding sleeves (606) close to the side of the tungsten plate, and pull the telescopic rod (608) along the axial direction of the sliding sleeve (606). Clamp the limiting block (609) at the top of the telescopic rod (608) with the side of the tungsten plate. At the same time, the spring member (607) at the bottom of the telescopic rod (608) is compressed to push the telescopic rod (608) to slide along the axial direction of the sliding sleeve (606). Step 2: Start the operation of the supercharger (4). The high-pressure pump (402) pumps the clear water in the water storage tank (2) and divides it into the first material conveying pipe (305) and the water inlet pipe (801). The first material conveying pipe (305) adjusts the clear water flow through the regulating valve (301). When the clear water in the first material conveying pipe (305) passes through the first check valve (304), the abrasive in the siphon traction leakage tank (303) is drawn into the first material conveying pipe (305) by siphonage and is preliminarily mixed with the clear water. The first material conveying pipe (305) is connected to the second material conveying pipe (803). The second material conveying pipe (803) conveys the mixed water into the mixing tank (8) through the second check valve (802). In the mixing tank (8), the driving motor drives the stirring paddle (804) to rotate. The water inlet pipe (801) guides the high-pressure clear water to enter the mixing tank (8) through the second check valve (802). The high-pressure clear water is sprayed on the blades of the stirring paddle (804) through the second check valve (802), assisting the stirring paddle (804) to accelerate the axial rotation. At the same time, the high-pressure clear water combines with the stirring paddle (804) to promote the secondary proportional mixing of the mixed water and the clear water input into the mixing tank (8). When the abrasive in the first abrasive tank (3) is insufficient, open the regulating valve (301) on the side of the second abrasive tank (306), close the regulating valve (301) on the side of the first abrasive tank (3), and the second abrasive tank (306) continuously provides the mixed water for the mixing tank (8). Open the top cover (302) of the first abrasive tank (3) to add abrasive to the inside of the first abrasive tank (3), realizing the continuous replacement of abrasive without stopping the machine, ensuring the continuous processing efficiency of the water jet. The mixing tank (8) is connected to the connecting pipe (708) through an external valve to continuously provide high-pressure water flow for the nozzle (706). The water jet mechanism (7) slides axially back and forth along the first chute (101) through the first slider (701), the sliding frame (703) slides axially up and down along the column (702), the second slider (704) slides left and right along the axial direction of the sliding frame (703), and the electric push rod (705) expands and contracts to adjust the distance between the nozzle (706) and the tungsten plate; Step 3: The cut water flow slides down along the ejector rod (604) to the bottom plate (601), gathers on the bottom plate (601), is preliminarily filtered by the filter sleeve (612), and seeps into the leakage holes (602) from the gaps of the filter sleeve (612). The water flow drips onto the filter plate (610) along the leakage holes (602), undergoes secondary filtration and leakage, and drips onto the bottom wall of the cutting groove (6). It gathers at the water collecting groove (611) along the bottom wall of the cutting groove (6). The water delivery pipe (501) in the water return tank (5) is communicated with the water collecting groove (611). The circulation pump (401) operates to provide suction for the water delivery pipe (501), extracts and conveys the water flow gathered in the water collecting groove (611) into the water return tank (5). The water flow is purified by the ceramic filter element (502) three times, and the purified water flow in the water return tank (5) is conveyed into the water storage tank (2) by the circulation pump (401).

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