Abrasive slurry continuous jet device and control method thereof

Abstract

The invention provides an abrasive slurry continuous jet device and a control method thereof. The high-pressure power assembly comprises an oil tank, a hydraulic oil pump and a reversing valve assembly; according to the diaphragm continuous slurry supply assembly, a diaphragm pump can pump abrasive slurry in an abrasive slurry box into a first diaphragm tank or a second diaphragm tank; a first cavity of the first diaphragm tank and a first cavity of the second diaphragm tank are connected to the oil tank through the reversing valve assembly. A second cavity of the first diaphragm tank is connected to the abrasive slurry box through a first stop valve, and a second cavity of the second diaphragm tank is connected to the abrasive slurry box through a second stop valve; and the processing execution assembly comprises an abrasive slurry jet flow nozzle, and the abrasive slurry jet flow nozzle is connected to the second cavity of the first diaphragm tank through a third stop valve and connected to the second cavity of the second diaphragm tank through a fourth stop valve. The first diaphragm tank and the second diaphragm tank are adopted for alternately injecting and spraying abrasive slurry, and the abrasive slurry can be continuously sprayed.

Description

Technical Field

[0001] The invention relates to the field of high energy beam processing, and in particular to an abrasive slurry continuous jet device and a control method thereof. Background Art

[0002] High-pressure abrasive jets are widely used in mining, metallurgy, manufacturing, aerospace and other fields, including auxiliary rock breaking, surface pretreatment, cleaning, cutting processing and manufacturing. According to the different ways of mixing abrasives and water, abrasive water jets are divided into pre-mixed abrasive water jets and post-mixed abrasive water jets. Pre-mixed abrasive water jets pre-mix abrasives and water in the abrasive tank in front of the nozzle. This system usually provides a better mixing effect. Under the same pump pressure conditions, its jet power and energy are often better than post-mixed abrasive water jets. However, the disadvantages of pre-mixed abrasive water jets are that the system is complex, the feed is discontinuous, and the abrasive particles may cause greater wear on components such as pipes and nozzles. Post-mixed abrasive water jets mix abrasives and water inside the nozzle. Although it has the advantages of simple structure and long system life, its disadvantage is that the abrasive particles and water flow are mixed unevenly, resulting in a lower energy density and power of the jet. Traditional pre-mixed abrasive jet systems usually use a single high-pressure tank for operation. On the one hand, the tank is responsible for mixing abrasive and water, and on the other hand, it needs to store the mixed slurry. At the same time, it also bears extremely high operating pressure. Therefore, the tank volume is generally small, and there are problems such as discontinuous supply of abrasive slurry, uneven mixing, and inability to recycle, which limits the continuous and stable operation of the system. When dual high-pressure tanks are used for parallel operation, although continuous operation is achieved, the reversing valve is easily worn by abrasive particles during the switching process of the dual tanks, resulting in failure. The stability and life of the system cannot be guaranteed. Summary of the invention

[0003] In order to solve the problems of discontinuous supply, uneven mixing, short service life, and inability to recycle abrasive slurry in the prior art, an embodiment of the present invention provides an abrasive slurry continuous jetting device and a control method thereof.

[0004] The abrasive slurry continuous jetting device provided by the embodiment of the present invention comprises:

[0005] A high-pressure power assembly, including an oil tank, a hydraulic oil pump and a reversing valve assembly, wherein the hydraulic oil pump can pump the hydraulic oil in the oil tank into the diaphragm continuous slurry supply assembly;

[0006] A diaphragm continuous slurry supply assembly comprises an abrasive slurry box, a diaphragm pump, a first diaphragm tank and a second diaphragm tank, wherein the diaphragm pump can pump the abrasive slurry in the abrasive slurry box into the first diaphragm tank or the second diaphragm tank; wherein the first cavity of the first diaphragm tank and the first cavity of the second diaphragm tank are respectively connected to the oil tank through a reversing valve assembly, and the hydraulic oil can be controlled to flow into the first cavity of the first diaphragm tank or into the first cavity of the second diaphragm tank by controlling the flow direction of the hydraulic oil in the reversing valve assembly; the second cavity of the first diaphragm tank is connected to the abrasive slurry box through a first stop valve, and the second cavity of the second diaphragm tank is connected to the abrasive slurry box through a second stop valve, and the diaphragm pump can pump the abrasive slurry in the abrasive slurry box into the second cavity of the first diaphragm tank or the second cavity of the second diaphragm tank by controlling the on and off of the first stop valve and the second stop valve;

[0007] A processing execution component includes an abrasive slurry jet nozzle, a third stop valve and a fourth stop valve. The abrasive slurry jet nozzle is connected to the second cavity of the first diaphragm tank through the third stop valve, and is connected to the second cavity of the second diaphragm tank through the fourth stop valve. By controlling the on-off of the third stop valve and the fourth stop valve, the abrasive slurry in the second cavity of the first diaphragm tank or the abrasive slurry in the second cavity of the second diaphragm tank is selected to be sprayed from the abrasive slurry jet nozzle to the workpiece.

[0008] Furthermore, the reversing valve assembly includes a first two-position three-way reversing valve and a second two-position three-way reversing valve, wherein the first end of the first two-position three-way reversing valve is connected to the oil tank, the second end is connected to the oil tank through a hydraulic oil pump, and the third end is connected to the first diaphragm tank; the first end of the second two-position three-way reversing valve is connected to the oil tank, the second end is connected to the oil tank through a hydraulic oil pump, and the third end is connected to the second diaphragm tank.

[0009] Furthermore, a first filter is provided between the first diaphragm tank and the first two-position three-way reversing valve, and a second filter is provided between the second diaphragm tank and the second two-position three-way reversing valve to filter the hydraulic oil.

[0010] Furthermore, the abrasive slurry continuous jetting device further comprises:

[0011] The slurry configuration and recovery component includes a fluid collection pool arranged below the workpiece, one side of the fluid collection pool is connected to an abrasive slurry grading recovery device, the abrasive slurry grading recovery device is connected to an abrasive slurry mixing device, the abrasive slurry mixing device is also connected to a water pool and a sand box respectively, the water pool is connected to the abrasive slurry mixing device through a water pump and a first flow meter, the sand box is connected to the abrasive slurry mixing device through a second flow meter, and the abrasive slurry mixing device is connected to the abrasive slurry box.

[0012] Furthermore, the abrasive slurry recovery and classification device includes an abrasive filter and a classification conveying device, which can filter and remove impurities outside the abrasive and convey the filtered slurry to the abrasive slurry mixing device.

[0013] Furthermore, the first diaphragm tank and the second diaphragm tank are diaphragm tanks with the same structure. A diaphragm is arranged between the first cavity and the second cavity of the diaphragm tank. The diaphragm is used to isolate the first cavity and the second cavity and to transfer pressure between the first cavity and the second cavity. Pressure sensors are connected to the first cavity and the second cavity to monitor and feedback the pressure signals inside the first cavity and the second cavity.

[0014] Furthermore, a first one-way valve is provided between the first diaphragm tank and the abrasive slurry box, and a second one-way valve is provided between the second diaphragm tank and the abrasive slurry box to control the flow direction of the abrasive slurry.

[0015] Furthermore, the abrasive slurry continuous jet device also includes a monitoring and control system for detecting the flow rate and flow velocity of the hydraulic oil and abrasive slurry in the abrasive slurry continuous jet device, and controlling the hydraulic oil pump, the diaphragm pump, the first stop valve, the second stop valve, the third stop valve and the fourth stop valve. Another aspect of the present invention also provides a control method for the abrasive slurry continuous jet device, the method comprising:

[0016] S1, controlling the second cavity of the first diaphragm tank to be connected with the abrasive slurry box, pumping abrasive slurry into the second cavity of the first diaphragm tank, and performing energy storage operation of the first diaphragm tank; at this time, the first cavity of the first diaphragm tank is connected with the oil tank, so that the hydraulic oil in the first cavity of the first diaphragm tank flows back to the oil tank; controlling the first cavity of the second diaphragm tank to be connected with the oil tank through the hydraulic oil pump, pumping hydraulic oil into the first cavity of the second diaphragm tank, transmitting the pressure to the second cavity of the second diaphragm tank through the diaphragm of the second diaphragm tank, so that the abrasive slurry in the second cavity of the second diaphragm tank is ejected;

[0017] S2. When the abrasive slurry in the second cavity of the first diaphragm tank is fully charged, the first cavity of the first diaphragm tank is controlled to be connected with the oil tank through the hydraulic oil pump, and hydraulic oil is pumped into the first cavity of the first diaphragm tank, and the pressure is transmitted to the second cavity of the first diaphragm tank through the diaphragm of the first diaphragm tank, so that the abrasive slurry in the second cavity of the first diaphragm tank is ejected; the second cavity of the second diaphragm tank is controlled to be connected with the abrasive slurry box, and abrasive slurry is pumped into the second cavity of the second diaphragm tank to perform the energy storage operation of the second diaphragm tank;

[0018] S3. When the abrasive slurry in the second cavity of the second diaphragm tank has completed energy storage, return to step S1.

[0019] Furthermore, the method further comprises:

[0020] The abrasive slurry classification recovery device recovers the abrasive slurry in the fluid collection pool and transports it to the abrasive slurry mixing device, and according to the concentration of the abrasive slurry in the abrasive slurry mixing device, clean water and sand are added to obtain a suitable abrasive slurry concentration.

[0021] The abrasive slurry continuous jet device provided by the present invention has the following beneficial effects:

[0022] 1. The first diaphragm tank and the second diaphragm tank are used to alternately inject and spray the abrasive slurry, so that the abrasive slurry can be sprayed continuously and uninterruptedly;

[0023] 2. When the system is operating, the diaphragm pump pumps the pre-mixed abrasive slurry in the abrasive slurry box into the diaphragm tank. Through pre-mixing, the abrasive particles are more evenly distributed in the jet, which can improve the surface quality after processing. At the same time, pre-mixing is conducive to abrasive particle acceleration, enhancing the jet cutting ability and improving operation efficiency;

[0024] 3. The first diaphragm tank and the second diaphragm tank work simultaneously. The stop valve and the control system are used to realize the automatic alternation of injecting and ejecting abrasive slurry from the two diaphragm tanks, thus avoiding the problem that the sliding solenoid valve is easily damaged by abrasive particles, and realizing the continuous jetting of abrasive slurry while ensuring the long life of equipment parts.

[0025] 4. The diaphragm has strong toughness and can effectively resist the erosion of abrasive slurry. At the same time, the diaphragm is used as the medium for energy transfer to achieve static pressure energy transfer, with small pressure loss, low energy consumption and stable system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a system schematic diagram of the abrasive slurry continuous jetting device of the present invention;

[0027] Among them: 11-oil tank; 12-hydraulic oil pump; 13-first pressure sensing device; 14-two-position three-way reversing valve; 15-filter; 21-first diaphragm tank; 22-first one-way valve; 23-first stop valve; 24-abrasive slurry box; 25-second pressure sensing device; 26-diaphragm pump; 31-abrasive slurry jet nozzle; 32-third stop valve; 41-fluid collecting tank; 42-abrasive slurry classification recovery device; 43-water pump; 44-water tank; 45-abrasive slurry mixing device; 46-second flow meter; 47-abrasive box; 50-monitoring and control system. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0029] The present invention provides a continuous jetting device for abrasive slurry. Figure 1As shown, the abrasive slurry continuous jet device provided by the example of the present invention includes: a high-pressure power component 10, a diaphragm continuous slurry supply component 20, a processing execution component 30, a slurry configuration and recovery component 40 and a monitoring and control component 50, wherein the high-pressure power component 10 can provide injection pressure to the diaphragm continuous slurry supply component 20, so that the abrasive slurry in the diaphragm continuous slurry supply component 20 is sprayed onto the workpiece through the processing execution component 30.

[0030] Specifically, the high-pressure power assembly 10 includes an oil tank 11 , a hydraulic oil pump 12 and a reversing valve assembly, wherein the hydraulic oil pump 12 can pump the hydraulic oil in the oil tank 11 into the diaphragm continuous slurry supply assembly 20 . The diaphragm continuous slurry supply assembly 20 includes an abrasive slurry box 24, a diaphragm pump 26, a first diaphragm tank 21 and a second diaphragm tank. The diaphragm pump 26 can pump the abrasive slurry in the abrasive slurry box 24 into the first diaphragm tank 21 or the second diaphragm tank; wherein the first cavity of the first diaphragm tank 21 and the first cavity of the second diaphragm tank are respectively connected to the oil tank 11 through a reversing valve assembly, and the hydraulic oil flow direction in the reversing valve assembly can be controlled to control the hydraulic oil to flow into the first cavity of the first diaphragm tank 21 or into the first cavity of the second diaphragm tank; the second cavity of the first diaphragm tank 21 is connected to the abrasive slurry box 24 through a first stop valve 23, and the second cavity of the second diaphragm tank is connected to the abrasive slurry box 24 through a second stop valve. By controlling the on-off of the first stop valve 23 and the second stop valve, the diaphragm pump 26 can pump the abrasive slurry in the abrasive slurry box 24 into the second cavity of the first diaphragm tank 21 or the second cavity of the second diaphragm tank. The processing execution component 30 includes an abrasive slurry jet nozzle 31, a third stop valve 32 and a fourth stop valve. The abrasive slurry jet nozzle 31 is connected to the second cavity of the first diaphragm tank 21 through the third stop valve 32, and is connected to the second cavity of the second diaphragm tank through the fourth stop valve. By controlling the on-off of the third stop valve 32 and the fourth stop valve, the abrasive slurry in the second cavity of the first diaphragm tank 21 or the abrasive slurry in the second cavity of the second diaphragm tank is selected to be sprayed from the abrasive slurry jet nozzle 31 to the workpiece. It should be noted that in the embodiment of the present invention, the first diaphragm tank 21 and the second diaphragm tank have the same structure. Figure 1 Only the first diaphragm tank 21 is marked, and correspondingly, only the first stop valve 23 is marked in the first stop valve 23 and the second stop valve, and only the third stop valve 32 is marked in the third stop valve 32 and the fourth stop valve.

[0031] Furthermore, the reversing valve assembly includes a first two-position three-way reversing valve 14 and a second two-position three-way reversing valve, wherein the first end of the first two-position three-way reversing valve 14 is connected to the oil tank 11, the second end is connected to the oil tank 11 through the hydraulic oil pump 12, and the third end is connected to the first diaphragm tank 21; the first end of the second two-position three-way reversing valve is connected to the oil tank 11, the second end is connected to the oil tank 11 through the hydraulic oil pump 12, and the third end is connected to the second diaphragm tank.

[0032] Specifically, when the first end of the first two-position three-way reversing valve 14 is connected to the third end, the hydraulic oil in the first diaphragm tank 21 can flow directly into the oil tank 11, and when the second end of the first two-position three-way reversing valve 14 is connected to the third end, the hydraulic oil in the oil tank 11 is pumped into the first diaphragm tank 21 through the hydraulic oil pump 12. Correspondingly, when the first end of the second two-position three-way reversing valve is connected to the third end, the hydraulic oil in the second diaphragm tank can flow directly into the oil tank 11, and when the second end of the second two-position three-way reversing valve is connected to the third end, the hydraulic oil in the oil tank 11 is pumped into the second diaphragm tank through the hydraulic oil pump 12. The present invention avoids the problem that the sliding solenoid valve is easily damaged by abrasive erosion by abrasive particles by setting two two-position three-way reversing valves to connect the oil circuit, and realizes continuous jetting of abrasive slurry on the basis of ensuring the long life of equipment parts.

[0033] Furthermore, a first pressure sensor 13 is provided on the communication path of the hydraulic oil pump 12 for detecting the hydraulic oil pressure on the hydraulic oil pipeline.

[0034] Furthermore, a first filter 15 is provided between the first diaphragm tank 21 and the first two-position three-way reversing valve 14, and a second filter is provided between the second diaphragm tank and the second two-position three-way reversing valve to filter the hydraulic oil. The present invention can filter not only the hydraulic oil pumped into the diaphragm tank, but also the hydraulic oil returned to the hydraulic oil tank 11 through the first filter 15 and the second filter, thereby ensuring the recycling of the hydraulic oil.

[0035] Furthermore, in the embodiment of the present invention, the first diaphragm tank 21 and the second diaphragm tank are diaphragm tanks of the same structure, and a diaphragm is provided between the first cavity and the second cavity of the diaphragm tank. The diaphragm has the function of separation and sealing, and is used to isolate the first cavity and the second cavity, thereby completely isolating the hydraulic oil in the first cavity from the abrasive slurry in the second cavity.

[0036] In addition, the diaphragm can also transfer pressure between the first cavity and the second cavity, that is, when hydraulic oil is pumped into the first cavity, the pressure of the first cavity increases, and the pressure is transferred to the second cavity through the diaphragm, so that the abrasive slurry in the second cavity flows out of the second cavity; correspondingly, when abrasive slurry is pumped into the second cavity, the pressure of the second cavity increases, and the pressure is transferred to the first cavity through the diaphragm, so that the hydraulic oil in the first cavity flows back from the first cavity to the hydraulic oil tank 11. In addition, pressure sensors are connected to both the first cavity and the second cavity, which can monitor and feedback the pressure signals inside the first cavity and the second cavity.

[0037] In the present invention, the diaphragm has strong toughness and can effectively resist the erosion of abrasive slurry. At the same time, the diaphragm is used as a medium for energy transfer to achieve static pressure energy transfer, with small pressure loss, low energy consumption and stable system operation.

[0038] It should be noted that in order to make the control smoother, in a specific embodiment of the present invention, when arranging the diaphragm tank, the first cavity is set at the top as the upper cavity, and the second cavity is set at the bottom as the lower cavity. At this time, the abrasive slurry in the lower cavity is not only affected by the pressure of the hydraulic oil, but also by its own gravity, which promotes the ejection of the abrasive slurry.

[0039] Furthermore, in addition to the first stop valve 23, a first one-way valve 22 is also provided in the connection passage between the first diaphragm tank 21 and the abrasive slurry box 24, and in addition to the second stop valve, a second one-way valve is also provided in the connection passage between the second diaphragm tank and the abrasive slurry box 24. The one-way valve can control the flow direction of the abrasive slurry. Specifically, the first one-way valve 22 allows the abrasive slurry in the abrasive slurry box 24 to flow in one direction to the first diaphragm tank 21, and the second one-way valve allows the abrasive slurry in the abrasive slurry box 24 to flow in one direction to the second diaphragm tank.

[0040] Furthermore, after the abrasive slurry flow paths of the first diaphragm tank 21 and the second diaphragm tank are integrated into the first main passage, they are connected to the abrasive slurry box 24, and the diaphragm pump 26 is arranged on the first main passage, and the pumping of the abrasive slurry in the two diaphragm tanks can be controlled by one diaphragm pump 26. In addition, a second pressure sensor 25 is also arranged on the first main passage, which is used to detect the pressure of the abrasive slurry on the first main passage.

[0041] Furthermore, in the processing execution component 30, the first diaphragm tank 21 passes through the third stop valve 32 and the second diaphragm tank passes through the fourth stop valve and is converged to the second main passage at the abrasive slurry jet nozzle 31, thereby realizing the circulation of the abrasive slurry to the abrasive slurry jet nozzle 31.

[0042] In addition, the geometric shape and jet target distance of the abrasive slurry jet nozzle 31 are adjustable. The geometric shape and jet target distance of the abrasive nozzle can be flexibly adjusted to cope with different working objects and working conditions, so that the system has higher working efficiency and processing quality.

[0043] Furthermore, the abrasive slurry continuous jet device provided in the embodiment of the present invention also includes: a slurry configuration and recovery component 40, including a fluid collection pool 41 arranged below the workpiece, an abrasive slurry grading recovery device 42 is connected to one side of the fluid collection pool 41, the abrasive slurry grading recovery device 42 is connected to the abrasive slurry mixing device 45, the abrasive slurry mixing device 45 is also respectively connected to the water pool 44 and the sand box 47, and the abrasive slurry mixing device 45 is connected to the abrasive slurry box 24.

[0044] Furthermore, the abrasive slurry recovery and classification device includes an abrasive filter and a classification conveying device, which can filter and remove impurities outside the abrasive and convey the filtered slurry to the abrasive slurry mixing device 45.

[0045] Furthermore, the water pool 44 is connected to the abrasive slurry mixing device 45 through the water pump 43 and the first flow meter, and the sand box 47 is connected to the abrasive slurry mixing device 45 through the second flow meter 46. After the recovered and separated slurry is transported to the abrasive slurry mixing device 45, clean water and sand particles can be added in a certain proportion to prepare a suitable abrasive slurry concentration.

[0046] Furthermore, the present invention transmits the configured abrasive slurry to the abrasive slurry box 24 through the passage between the abrasive slurry mixing device 45 and the abrasive slurry box 24. Through pre-adjustment and mixing, the distribution of abrasive particles in the jet is more uniform, which can improve the surface quality after processing. At the same time, it is also beneficial to accelerate the abrasive particles, enhance the jet cutting ability, and improve the working efficiency.

[0047] Furthermore, the abrasive slurry continuous jet device provided in the embodiment of the present invention further includes: the abrasive slurry continuous jet device also includes a monitoring and control system 50, which is used to detect the flow rate and flow velocity of the hydraulic oil and abrasive slurry in the abrasive slurry continuous jet device, and control the hydraulic oil pump 12, the diaphragm pump 26, the first stop valve 23, the second stop valve, the third stop valve 32 and the fourth stop valve. Specifically, it includes a signal receiver for monitoring the system pressure and flow, and a wireless control device that can automatically / manually adjust the system parameters in real time.

[0048] The control method of the abrasive slurry continuous jetting device of the present invention is further described in detail below. When the abrasive slurry is continuously jetted, the control method is as follows:

[0049] S1, control the second cavity of the first diaphragm tank 21 to be connected with the abrasive slurry box 24, pump abrasive slurry into the second cavity of the first diaphragm tank 21, and perform energy storage operation of the first diaphragm tank 21; at this time, the first cavity of the first diaphragm tank 21 is connected with the oil tank 11, so that the hydraulic oil in the first cavity of the first diaphragm tank 21 flows back to the oil tank 11; control the first cavity of the second diaphragm tank to be connected with the oil tank 11 through the hydraulic oil pump 12, pump hydraulic oil into the first cavity of the second diaphragm tank, and transmit the pressure to the second cavity of the second diaphragm tank through the diaphragm of the second diaphragm tank, so that the abrasive slurry in the second cavity of the second diaphragm tank is ejected;

[0050] S2, when the abrasive slurry in the second cavity of the first diaphragm tank 21 is fully stored, the first cavity of the first diaphragm tank 21 is controlled to be connected with the oil tank 11 through the hydraulic oil pump 12, and hydraulic oil is pumped into the first cavity of the first diaphragm tank 21, and the pressure is transmitted to the second cavity of the first diaphragm tank 21 through the diaphragm of the first diaphragm tank 21, so that the abrasive slurry in the second cavity of the first diaphragm tank 21 is ejected; the second cavity of the second diaphragm tank is controlled to be connected with the abrasive slurry box 24, and abrasive slurry is pumped into the second cavity of the second diaphragm tank to perform the storage operation of the second diaphragm tank;

[0051] S3. When the abrasive slurry in the second cavity of the second diaphragm tank has completed energy storage, return to step S1.

[0052] The present invention enables the first diaphragm tank 21 and the second diaphragm tank to work simultaneously, and the first diaphragm tank 21 and the second diaphragm tank are used to alternately drive and spray the abrasive slurry, so that the abrasive slurry can be sprayed continuously and uninterruptedly.

[0053] Further, in the specific operation flow in step S1, the first end of the first two-position three-way reversing valve 14 is connected to the third end, so that the first diaphragm tank 21 is directly connected to the oil tank 11, and the second end of the second two-position three-way reversing valve is connected to the third end, so that the first diaphragm tank 21 is connected to the oil tank 11, so that when the abrasive slurry is pumped into the second cavity, the hydraulic oil in the first cavity of the first diaphragm tank 21 is returned to the oil tank 11 under the action of the abrasive slurry pressure, and the hydraulic oil pump 12 pumps the hydraulic oil from the oil tank 11 into the first cavity of the second diaphragm tank. At the same time, the first stop valve 23 between the first diaphragm tank 21 and the abrasive slurry box 24 is opened, and the second stop valve between the second diaphragm tank and the abrasive slurry box 24 is closed, so that the diaphragm pump 26 pumps the abrasive slurry in the abrasive slurry box 24 into the first diaphragm tank 21. At the same time, the third stop valve 32 between the first diaphragm tank 21 and the abrasive slurry jet nozzle 31 is closed, and the fourth stop valve between the second diaphragm tank and the abrasive slurry jet nozzle 31 is opened, so that when the hydraulic oil pump 12 pumps the hydraulic oil from the oil tank 11 into the first cavity of the second diaphragm tank, the abrasive slurry in the second cavity of the second diaphragm tank is sprayed out from the abrasive slurry jet nozzle 31.

[0054] Further, in the specific operation flow in step S2, the second end of the first two-position three-way reversing valve 14 is connected to the third end, so that the first diaphragm tank 21 is connected to the oil tank 11 through the hydraulic oil pump 12, and the first end of the second two-position three-way reversing valve is connected to the third end, so that the first diaphragm tank 21 is connected to the oil tank 11, so that when the abrasive slurry is pumped into the second cavity, the hydraulic oil in the first cavity of the second diaphragm tank is returned to the oil tank 11 under the action of the abrasive slurry pressure, and the hydraulic oil pump 12 pumps the hydraulic oil from the oil tank 11 into the first cavity of the first diaphragm tank 21. At the same time, the first stop valve 23 between the first diaphragm tank 21 and the abrasive slurry box 24 is closed, and the second stop valve between the second diaphragm tank and the abrasive slurry box 24 is opened, so that the diaphragm pump 26 pumps the abrasive slurry in the abrasive slurry box 24 into the second diaphragm tank. At the same time, the third stop valve 32 between the second diaphragm tank and the abrasive slurry jet nozzle 31 is opened, and the fourth stop valve between the second diaphragm tank and the abrasive slurry jet nozzle 31 is closed, so that the abrasive slurry in the second cavity of the first diaphragm tank 21 is ejected from the abrasive slurry jet nozzle 31 .

[0055] The present invention realizes the simultaneous operation of the first diaphragm tank 21 and the second diaphragm tank, and realizes the continuous and uninterrupted injection of the abrasive slurry.

[0056] Furthermore, in the embodiment of the present invention, while continuously spraying the abrasive slurry, the following steps may also be included:

[0057] S4, the abrasive slurry classification recovery device 42 recovers the abrasive slurry in the fluid collection pool 41 and transports it to the abrasive slurry mixing device 45, and according to the concentration of the abrasive slurry in the abrasive slurry mixing device 45, adds clean water and sand to obtain a suitable abrasive slurry concentration.

[0058] In the embodiment of the present invention, the first flow meter and the second flow meter 46 are used to control the amount of clean water and sand flowing into the abrasive slurry mixing device 45 respectively, so as to adjust the concentration of the abrasive slurry.

[0059] The abrasive slurry continuous jet device provided by the present invention has the following beneficial effects:

[0060] 1. The first diaphragm tank 21 and the second diaphragm tank are used to alternately inject and spray the abrasive slurry, so that the abrasive slurry can be sprayed continuously and uninterruptedly;

[0061] 2. When the system is in operation, the diaphragm pump 26 pumps the pre-mixed abrasive slurry in the abrasive slurry box 24 into the diaphragm tank. Through pre-mixing, the distribution of abrasive particles in the jet is more uniform, which can improve the surface quality after processing. At the same time, pre-mixing is conducive to abrasive particle acceleration, enhancing the jet cutting ability and improving the operation efficiency;

[0062] 3. The first diaphragm tank 21 and the second diaphragm tank work simultaneously, and the two diaphragm tanks are automatically alternately injected and ejected with abrasive slurry through the stop valve and the control system, thereby avoiding the problem that the sliding solenoid valve is easily damaged by abrasive particles, and realizing continuous jetting of abrasive slurry while ensuring the long life of equipment parts.

[0063] 4. The diaphragm has strong toughness and can effectively resist the erosion of abrasive slurry. At the same time, the diaphragm is used as the medium for energy transfer to achieve static pressure energy transfer, with small pressure loss, low energy consumption and stable system operation.

[0064] The above specific implementation methods and cases demonstrate the effectiveness and innovation of the present invention, and focus on explaining the system design principle and surface treatment advantages of the abrasive slurry continuous jet device.

Claims

1. A continuous jetting device for abrasive slurry, characterized in that: include: The high-pressure power assembly includes an oil tank, a hydraulic oil pump and a reversing valve assembly. The hydraulic oil pump can pump the hydraulic oil in the oil tank into the diaphragm continuous slurry supply assembly. A first pressure sensing device is also provided near the hydraulic oil pump to detect the hydraulic oil pressure in the hydraulic oil transmission pipeline. A diaphragm continuous slurry supply assembly comprises an abrasive slurry box, a diaphragm pump, a first diaphragm tank and a second diaphragm tank, wherein the diaphragm pump can pump the abrasive slurry in the abrasive slurry box into the first diaphragm tank or the second diaphragm tank; wherein the first cavity of the first diaphragm tank and the first cavity of the second diaphragm tank are respectively connected to the oil tank through a reversing valve assembly, and the hydraulic oil can be controlled to flow into the first cavity of the first diaphragm tank or into the first cavity of the second diaphragm tank by controlling the flow direction of the hydraulic oil in the reversing valve assembly; the second cavity of the first diaphragm tank is connected to the abrasive slurry box through a first stop valve, and the second cavity of the second diaphragm tank is connected to the abrasive slurry box through a second stop valve, and the diaphragm pump can pump the abrasive slurry in the abrasive slurry box into the second cavity of the first diaphragm tank or the second cavity of the second diaphragm tank by controlling the on and off of the first stop valve and the second stop valve; A processing execution component includes an abrasive slurry jet nozzle, a third stop valve and a fourth stop valve. The abrasive slurry jet nozzle is connected to the second cavity of the first diaphragm tank through the third stop valve, and is connected to the second cavity of the second diaphragm tank through the fourth stop valve. By controlling the on-off of the third stop valve and the fourth stop valve, the abrasive slurry in the second cavity of the first diaphragm tank or the abrasive slurry in the second cavity of the second diaphragm tank is selected to be sprayed from the abrasive slurry jet nozzle to the workpiece.

2. The abrasive slurry continuous jet device according to claim 1, characterized in that: The reversing valve assembly includes a first two-position three-way reversing valve and a second two-position three-way reversing valve. The first end of the first two-position three-way reversing valve is connected to the oil tank, the second end is connected to the oil tank through a hydraulic oil pump, and the third end is connected to the first diaphragm tank; the first end of the second two-position three-way reversing valve is connected to the oil tank, the second end is connected to the oil tank through a hydraulic oil pump, and the third end is connected to the second diaphragm tank.

3. The abrasive slurry continuous jet device according to claim 2, characterized in that: A first filter is arranged between the first diaphragm tank and the first two-position three-way reversing valve, and a second filter is arranged between the second diaphragm tank and the second two-position three-way reversing valve to filter the hydraulic oil.

4. The abrasive slurry continuous jet device according to claim 1, characterized in that: The abrasive slurry continuous jetting device also includes: The slurry configuration and recovery component includes a fluid collection pool arranged below the workpiece, one side of the fluid collection pool is connected to an abrasive slurry grading recovery device, the abrasive slurry grading recovery device is connected to an abrasive slurry mixing device, the abrasive slurry mixing device is also connected to a water pool and a sand box respectively, the water pool is connected to the abrasive slurry mixing device through a water pump and a first flow meter, the sand box is connected to the abrasive slurry mixing device through a second flow meter, and the abrasive slurry mixing device is connected to the abrasive slurry box.

5. The abrasive slurry continuous jet device according to claim 3, characterized in that: The abrasive slurry recovery and classification recovery device includes an abrasive filter and a classification conveying device, which can filter and remove impurities outside the abrasive and convey the filtered slurry to the abrasive slurry mixing device.

6. The abrasive slurry continuous jet device according to claim 1, characterized in that: The first diaphragm tank and the second diaphragm tank are diaphragm tanks with the same structure. A diaphragm is arranged between the first cavity and the second cavity of the diaphragm tank. The diaphragm is used to isolate the first cavity and the second cavity and to transfer the pressure between the first cavity and the second cavity. The first cavity and the second cavity are both connected to pressure sensors, which can monitor and feedback the pressure signals inside the first cavity and the second cavity.

7. The abrasive slurry continuous jetting device according to claim 1, characterized in that: A first one-way valve is arranged between the first diaphragm tank and the abrasive slurry box, and a second one-way valve is arranged between the second diaphragm tank and the abrasive slurry box to control the flow direction of the abrasive slurry.

8. The abrasive slurry continuous jetting device according to claim 1, characterized in that: The abrasive slurry continuous jet device also includes a monitoring and control system for detecting the flow and flow rate of the hydraulic oil and abrasive slurry in the abrasive slurry continuous jet device, and controlling the hydraulic oil pump, diaphragm pump, first stop valve, second stop valve, third stop valve and fourth stop valve.

9. A control method for a continuous jetting device of an abrasive slurry, characterized in that: The method comprises: S1, controlling the second cavity of the first diaphragm tank to be connected with the abrasive slurry box, pumping abrasive slurry into the second cavity of the first diaphragm tank, and performing energy storage operation of the first diaphragm tank; at this time, the first cavity of the first diaphragm tank is connected with the oil tank, so that the hydraulic oil in the first cavity of the first diaphragm tank flows back to the oil tank; controlling the first cavity of the second diaphragm tank to be connected with the oil tank through the hydraulic oil pump, pumping hydraulic oil into the first cavity of the second diaphragm tank, transmitting the pressure to the second cavity of the second diaphragm tank through the diaphragm of the second diaphragm tank, so that the abrasive slurry in the second cavity of the second diaphragm tank is ejected; S2. When the abrasive slurry in the second cavity of the first diaphragm tank is fully charged, the first cavity of the first diaphragm tank is controlled to be connected with the oil tank through the hydraulic oil pump, and hydraulic oil is pumped into the first cavity of the first diaphragm tank, and the pressure is transmitted to the second cavity of the first diaphragm tank through the diaphragm of the first diaphragm tank, so that the abrasive slurry in the second cavity of the first diaphragm tank is ejected; the second cavity of the second diaphragm tank is controlled to be connected with the abrasive slurry box, and abrasive slurry is pumped into the second cavity of the second diaphragm tank to perform the energy storage operation of the second diaphragm tank; S3. When the abrasive slurry in the second cavity of the second diaphragm tank has completed energy storage, return to step S1.

10. The method according to claim 9, characterized in that The method further comprises: The abrasive slurry classification recovery device recovers the abrasive slurry in the fluid collection pool and transports it to the abrasive slurry mixing device, and according to the concentration of the abrasive slurry in the abrasive slurry mixing device, clean water and sand are added to obtain a suitable abrasive slurry concentration.

Images