An internal high-pressure forming emulsification system and control method

Abstract

The present invention discloses an internal high-pressure forming emulsification system and a control method, which include a mold, a supercharger, an emulsification oil tank, and an emulsification liquid sedimentation tank. The mold is connected to the emulsification liquid sedimentation tank. The emulsification liquid sedimentation tank is provided with a first oil suction area and a first oil return area, and a first filter screen NL6 is arranged between the first oil suction area and the first oil return area. The emulsification oil tank is provided with a second oil suction area and a second oil return area, and a second filter screen NL5 is arranged between the second oil suction area and the second oil return area. The first oil suction area in the emulsification liquid sedimentation tank drives a fourth hydraulic pump through a fourth motor to send the emulsification liquid in the first oil suction area of the emulsification liquid sedimentation tank to a third filter NL3. After being filtered by the third filter NL3, it enters the second oil return area of the emulsification oil tank. The second oil return area drives a third hydraulic pump through a third motor to cool the emulsification liquid in the second oil return area through a cooler CL, and then filters it through a second filter NL2 and sends it to the second oil suction area. The present invention realizes the reuse of the emulsification liquid and reduces the production cost.

Description

Technical Field

[0001] The present invention relates to the field of molds, and particularly to an internal high-pressure forming emulsification system and a control method therefor. Background Art

[0002] Internal high-pressure forming, also known as hydroforming, is a process that uses liquid as the forming medium and controls pressure and material fluidity to form hollow parts. With the application of lightweight materials in many pipes, more and more internal high-pressure forming products are emerging. During the forming process, an emulsifying solution of 5-10% is generally used as the forming medium, which needs to be sent into the pipe inside the mold through the operation of a series of actuators and then returned to the emulsifying oil tank after the work is completed. However, the emulsification systems currently used in the market have the following disadvantages:

[0003] 1. The emulsifying liquid is not thoroughly filtered, which easily clogs the valve, greatly reducing the recycling service life of the emulsifying liquid and increasing the procurement cost of the emulsifying liquid and the treatment cost of waste oil;

[0004] 2. Most emulsification systems use three-screw hydraulic pumps, which are prone to screw breakage;

[0005] 3. The screw hydraulic pump is not ideal for medium-pressure applications in the emulsification system. After the screw is worn or the viscosity is too low, the pressure cannot be achieved. These disadvantages all increase the cost of the formed products. Summary of the Invention

[0006] The object of the present invention is to provide an internal high-pressure forming emulsification system and a control method therefor, which have a simple structure, can realize the reuse of the emulsifying liquid, and reduce the product cost in view of the deficiencies of the prior art.

[0007] The technical solution of the present invention is as follows:

[0008] An internal high-pressure forming emulsification system includes a mold, a supercharger, and an emulsification oil tank. The emulsification oil tank is provided with a first hydraulic pump P1 and a second hydraulic pump P2. The first motor M1 drives the first hydraulic pump P1 to be connected to the mold through a first integrated body CF1, for sending the emulsified liquid in the emulsification oil tank to the mold for rapid liquid filling; the second motor M2 drives the second hydraulic pump P2 to be connected to the mold through a second integrated body CF2 and the supercharger ZYQ in sequence, for sending the emulsified liquid in the emulsification oil tank to the mold after being pressurized by the supercharger ZYQ. It further includes an emulsified liquid sedimentation tank. An emulsified liquid water receiving tray is provided at the lower end of the workbench of the mold, and the emulsified liquid water receiving tray is connected to the emulsified liquid sedimentation tank. The emulsified liquid sedimentation tank is provided with a first oil suction area and a first oil return area, and a first filter screen NL6 is arranged between the first oil suction area and the first oil return area; a second oil suction area and a second oil return area are arranged in the emulsification oil tank, and a second filter screen NL5 is arranged between the second oil suction area and the second oil return area. The first oil suction area in the emulsified liquid sedimentation tank drives a fourth hydraulic pump through a fourth motor to send the emulsified liquid in the first oil suction area of the emulsified liquid sedimentation tank to a third filter NL3, and after being filtered by the third filter NL3, it enters the second oil return area of the emulsification oil tank. The second oil return area drives a third hydraulic pump through a third motor to cool the emulsified liquid in the second oil return area through a cooler CL, and then filters it through a second filter NL2 and sends it to the second oil suction area.

[0009] Further, the emulsified liquid sedimentation tank adopts a paper tape type filter.

[0010] Further, the emulsified liquid sedimentation tank and the emulsification oil tank are both provided with a liquid level controller, an air filter KL, and an oil drain ball valve QF.

[0011] Further, the first integrated body CF1 includes a first solenoid valve, a first overflow valve fa, and a first cartridge valve, and the second integrated body CF2 includes a second solenoid valve and a second overflow valve fb.

[0012] Further, the first integrated body CF1 is also provided with a first pressure gauge BP1 and a first pressure sensor XP1, the second integrated body CF2 is also provided with a second pressure gauge BP2 and a second pressure sensor XP2, and the supercharger is provided with a third pressure gauge BP3 and a third pressure sensor XP3.

[0013] Further, a first filter NL1 is arranged between the second hydraulic pump and the second integrated body CF2. The first filter NL1 adopts a medium-pressure filter, and a first blockage alarm device SP1 is connected to the first filter NL1;; the second filter NL2 adopts a single-cylinder filter, and a second blockage alarm device SP2 is connected to the second filter NL2; the third filter NL3 is a double-cylinder filter, and a signal sending switch is connected to the third filter NL3.

[0014] Further, a liquid level and liquid temperature gauge YW, a magnetic filter NL4, and a temperature sensor RT are also provided in the second oil return area inside the emulsification oil tank, and a liquid level and liquid temperature gauge YW is also provided in the second oil suction area of the emulsification oil tank.

[0015] Further, the first hydraulic pump P1 is an immersion centrifugal pump, and the second hydraulic pump P2 is a high-pressure vane pump.

[0016] Another technical solution of the present invention is:

[0017] An internal high-pressure forming emulsification control method, using the above-mentioned internal high-pressure forming emulsification system, includes the following steps:

[0018] S001 The supercharger ZYQ pre-works, and the second hydraulic pump P2 is driven by the second motor M2 to send the emulsified liquid in the emulsification oil tank to the supercharger ZYQ through the second integrated body CF2;

[0019] S002 Rapidly fill the mold with liquid, and the first hydraulic pump P1 is driven by the first motor M1 to send the emulsified liquid in the emulsification oil tank to the mold through the first integrated body CF1;

[0020] S003 Pre-boost, and the second hydraulic pump P2 is driven by the second motor M2 to send the emulsified liquid in the emulsification oil tank to the mold through the second integrated body CF2 and the supercharger ZYQ;

[0021] S004 Hydraulic forming, and the supercharger ZYQ sends the emulsified liquid in the supercharger ZYQ to the mold for hydraulic forming;

[0022] S005 Preliminary precipitation of the recycled emulsified liquid, and the emulsified liquid after the mold is formed is sent to the first oil return area of the emulsified liquid sedimentation tank for precipitation, and then flows to the first oil suction area of the emulsified liquid sedimentation tank;

[0023] S006 Filtration of the emulsified liquid, and the fourth hydraulic pump P4 is driven by the fourth motor M4 to send the emulsified liquid in the first oil suction area of the emulsified liquid sedimentation tank to the third filter NL3 for filtration;

[0024] S007 Re-precipitation and filtration of the emulsified liquid, and the emulsified liquid filtered by the third filter NL3 is sent to the second oil return area of the emulsification oil tank. The third hydraulic pump P3 is driven by the third motor M3 to cool the emulsified liquid in the second oil return area of the emulsification oil tank through the cooler CL, and then enters the second oil suction area of the emulsification oil tank after being filtered by the second filter NL2.

[0025] Further, the S007 re-precipitation and filtration of the emulsified liquid further includes: adsorbing magnetic metal particles in the emulsified liquid in the second oil return area of the emulsification oil tank through the magnetic filter NL4.

[0026] The adoption of the above technical solution has the following beneficial effects:

[0027] The structure of the present invention is simple. An emulsion deposition tank is added. The emulsion deposition tank is provided with a first oil absorption area and a first oil return area, and a first filter screen is arranged between the first oil absorption area and the first oil return area; the emulsion tank is provided with a second oil absorption area and a second oil return area, and a second filter screen is arranged between the first oil absorption area and the first oil return area. The emulsion deposited in the emulsion deposition tank is filtered by a third filter NL3 and then sent to the emulsion tank. The emulsion in the emulsion tank is cooled by a cooler and then filtered again by a second filter NL2; the present invention adopts the principle of combining multiple and multiple filters to clean and filter the emulsion, realizes the repeated reuse of the emulsion, and reduces the production cost. Moreover, the emulsion deposition tank deposits and filters the emulsion, occupying a small space.

[0028] The first integrated body CF1 is provided with a first pressure gauge BP1 and a first pressure sensor XP1. The second integrated body CF2 is further provided with a second pressure gauge BP2 and a second pressure sensor XP2. The supercharger is provided with a third pressure gauge BP3 and a third pressure sensor XP3. The pressure gauges and pressure sensors are used to monitor and display the pressure during product forming to meet the product forming requirements and improve the product quality.

[0029] A first filter NL1 is arranged between the second hydraulic pump and the second integrated body CF2. The first filter NL1 adopts a medium-pressure filter, and a first blockage alarm device SP1 is connected to the first filter NL1. Through the re-filtering treatment of the first filter NL1, it is ensured that the emulsion sent to the supercharger is cleaner.

[0030] The first hydraulic pump adopts an immersion centrifugal pump, effectively controlling the pump procurement cost. The second hydraulic pump adopts a high-pressure vane pump, which can better ensure the pre-pressure requirement and ensure the quality of the formed product.

[0031] A liquid level and liquid temperature gauge YW, a magnetic filter NL4 and a temperature sensor RT are further arranged in the second oil return area of the emulsion tank. A liquid level and liquid temperature gauge YW is also arranged in the second oil absorption area of the emulsion tank. The magnetic filter NL4 adsorbs the magnetic metal particles in the emulsion to achieve the effect of cleaning the emulsion. The liquid level and liquid temperature gauge YW is used to observe the liquid addition amount and the emulsion amount at any time. The temperature sensor RT is used to ensure that the emulsion works at an appropriate temperature.

[0032] A further description will be made in conjunction with the following drawings and specific embodiments. Description of the Drawings

[0033] Figure 1 It is a schematic diagram of the emulsion system principle for Specific Embodiment 1;

[0034] Figure 2It is a flowchart of the control method of Specific Embodiment 1.

[0035] In the attached drawings, 1 is a mold, 2 is a workbench, 3 is an emulsion deposition tank, 3-1 is the first oil return area, 3-2 is the first oil suction area, 4 is an emulsion oil tank, 4-1 is the first oil return area, and 4-2 is the first oil suction area. Specific implementation mode Specific Embodiment 1:

[0037] See Figure 1As shown in the figure, an internal high-pressure forming emulsification system includes a mold 1, a supercharger, an emulsification oil tank 4, and an emulsion deposition tank 3. The emulsification oil tank 4 is provided with a first hydraulic pump P1 and a second hydraulic pump P2. The first motor M1 drives the first hydraulic pump P1 to be connected to the mold through a first integrated body CF1, and is used to send the emulsion in the emulsification oil tank to the mold for rapid liquid filling; the first hydraulic pump P1 is an immersion centrifugal pump, and the first integrated body CF1 includes a first solenoid valve, a first overflow valve fa, and a first cartridge valve. In this specific embodiment: the first integrated body CF1 includes a first overflow valve fa for pressure control, and two first solenoid valves YV101, YV102 and two first cartridge valves ZC101, ZC102 are adopted. The first integrated body CF1 is also provided with a first pressure gauge BP1 and a first pressure sensor XP1, which are used to monitor and display the pressure of rapid liquid filling, and can quickly confirm the working status of the first motor M1, the first hydraulic pump P1, and the first integrated body CF1. When the first solenoid valve YV101 is not energized, the first hydraulic pump P1 is in a unloading state. The second motor M2 drives the second hydraulic pump P2 to be connected to the mold through a second integrated body CF2 and the supercharger ZYQ in sequence, and is used to send the emulsion in the emulsification oil tank to the mold after being pressurized by the supercharger ZYQ. The second hydraulic pump P2 is a high-pressure vane pump, and the second integrated body CF2 includes a second solenoid valve and a second overflow valve fb. In this specific embodiment: the second integrated body CF2 includes a second overflow valve fb for pressure control, and two second solenoid valves YV201, YV202 are adopted. The second integrated body CF2 is also provided with a second pressure gauge BP2 and a second pressure sensor XP2, which are used to monitor and display the pressure of pre-liquid filling, and can quickly confirm the working status of the second motor M2, the second hydraulic pump P2, and the second integrated body CF2. When the second solenoid valve YV201 is not energized, the second hydraulic pump P2 is in a unloading state. The supercharger is provided with a third pressure gauge BP3 and a third pressure sensor XP3, which are used to monitor and display the pressure during product forming to meet the product forming requirements. A first filter NL1 is provided between the second hydraulic pump and the second integrated body CF2. The first filter NL1 is a medium-pressure filter, and a first blockage alarm device SP1 is connected to the first filter NL1; after being filtered by the first filter NL1, it enters the supercharger after the pressure is controlled by the overflow valve fb of the second integrated body CF2 and the direction is controlled by the second solenoid valves YV201, YV202 to reach the pre-working state of the supercharger.

[0038] At the lower end of the workbench 2 of the mold 1, there is an emulsion water receiving tray RJ, and the emulsion water receiving tray RJ is connected to the emulsion sedimentation tank 3. A first partition is provided in the emulsion sedimentation tank 3, dividing the emulsion sedimentation tank into a first oil absorption area 3-2 and a first oil return area 3-1. A first filter screen NL6 is provided between the first oil absorption area 3-2 and the first oil return area 3-1, and the first filter screen NL6 is arranged on the first partition. A second partition is provided in the emulsion oil tank, dividing the emulsion oil tank 4 into a second oil absorption area 4-2 and a second oil return area 4-1. A second filter screen NL5 is provided between the second oil absorption area 4-2 and the second oil return area 4-1, and the second filter screen NL5 is arranged on the second partition. The first oil absorption area in the emulsion sedimentation tank 3 drives a fourth hydraulic pump P4 through a fourth motor to send the emulsion in the first oil absorption area 3-2 of the emulsion sedimentation tank to a third filter NL3. The third filter NL3 is a double-barrel filter, and a signal sending switch is connected to the third filter NL3. Here, the filter is the main oil return pipeline for the emulsion to enter the emulsion system and is the main filter, which needs to filter most of the impurities and is prone to blockage. Therefore, a double-barrel filter NL3 is used. When the signal sending switch SP3.1 configured for the double-barrel filter NL3 alarms and sends a signal, the other channel of the third filter NL3 can be directly switched to use, and the blocked filter element can be replaced. On the contrary, when the signal sending switch SP3.2 alarms and sends a signal, the other channel of the third filter NL3 can be directly switched to use, and the blocked filter element can be replaced. After being filtered by the third filter NL3, it enters the second oil return area of the emulsion oil tank. The second oil return area drives a third hydraulic pump P3 through a third motor to cool the emulsion in the second oil return area through a cooler CL, and then sends it to the second oil absorption area after being filtered by a second filter NL2. The second filter NL2 uses a single-barrel filter, and a second blockage alarm device SP2 is connected to the second filter NL2. The third hydraulic pump P3 and the fourth hydraulic pump P4 use submersible centrifugal pumps.

[0039] Both the emulsion deposition tank and the emulsion oil tank are equipped with a liquid level controller, an air filter KL, and an oil drain ball valve QF. In this specific embodiment: The liquid level controller uses a liquid level relay. A first liquid level relay BQ2.2 is provided in the first oil return area of the emulsion deposition tank. This first liquid level relay BQ2.2 is a high liquid level relay, which is used to prevent the emulsion from overflowing the emulsion deposition tank. When the high liquid level relay BQ2.2 sends a signal, it is necessary to clean the emulsion deposition tank and the first filter NL6. A second liquid level relay BQ2.1 is provided in the first oil suction area of the emulsion deposition tank, and a second low liquid level relay BQ2.1c, a second high liquid level relay BQ2.1b, and a second ultra-high liquid level relay BQ2.1a are respectively provided. When the second low liquid level relay BQ2.1c is touched, the fourth hydraulic pump P4 is controlled to stop working. When the second high liquid level relay BQ2.1b is touched, the fourth hydraulic pump is controlled to start working. When the second ultra-high liquid level relay BQ2.1a is touched, there is a risk that the emulsion will overflow the emulsion deposition tank. Therefore, when the liquid level in the first oil suction area of the emulsion deposition tank exceeds BQ2.1a, the press is in a suspended working state, and each hydraulic pump group in the emulsion oil tank is in a unloading state to prevent the emulsion from flowing into the emulsion deposition tank and filling it up. When the liquid level of the emulsion in the emulsion deposition tank drops to the set BQ2.1b, the press and the emulsion system can continue to work. A third liquid level relay BQ1.2 is provided in the second oil return area of the emulsion oil tank, and a third low liquid level relay BQ1.2c, a third high liquid level relay BQ1.2b, and a third ultra-high liquid level relay BQ1.2a are respectively provided. When the third low liquid level relay BQ1.2c is touched, the third hydraulic pump P3 is controlled to stop working. When the third high liquid level relay BQ1.2b is touched, the fourth hydraulic pump is controlled to start working, which is the normal working liquid level. When the third ultra-high liquid level relay BQ1.2a is touched, the initially added emulsion is controlled to prevent the emulsion from being added in excess. A fourth liquid level relay BQ1.1 is provided in the second oil suction area of the emulsion oil tank, and a fourth low liquid level relay BQ1.1c, a fourth high liquid level relay BQ1.1b, and a fourth ultra-high liquid level relay BQ1.1a are respectively provided. When the fourth low liquid level relay BQ1.1c is touched, the first hydraulic pump P1 and the second hydraulic pump P2 stop working. When the fourth high liquid level relay BQ1.1b is touched, the first hydraulic pump P1 and the second hydraulic pump P2 are controlled to start working, which is the normal working liquid level. When the fourth ultra-high liquid level relay BQ1.1a is touched, the initially added emulsion is controlled to prevent the emulsion from being added in excess.

[0040] An air filter KL is provided in the first oil suction area, the first oil return area of the emulsion deposition tank, the second oil suction area, and the second oil return area of the emulsion tank for the circulation and filtration of air during the operation of the system. Drain ports are provided on the sides of the first oil suction area, the first oil return area of the emulsion deposition tank, the second oil suction area, and the second oil return area of the emulsion tank, and oil drain ball valves QF are provided at the drain ports.

[0041] A liquid level and liquid temperature gauge YW, a magnetic filter NL4, and a temperature sensor RT are also provided in the second oil return area of the emulsion tank. The magnetic filter NL4 adsorbs magnetic metal particles in the emulsion to clean the emulsion. A liquid level and liquid temperature gauge YW is also provided in the second oil suction area of the emulsion tank.

[0042] Possibly, the emulsion deposition tank uses a paper tape filter. The emulsion flowing down from the water receiving tray directly returns to the emulsion tank after passing through the paper tape filter, but its cost is relatively higher than that of the emulsion deposition tank and it occupies a larger space.

[0043] Possibly, the first integrated body and the second integrated body are controlled to be opened and closed by an electric or pneumatic gate valve to reduce valve jamming. However, the opening and closing time of the electric valve or pneumatic gate valve is relatively long, which is not conducive to product forming and cycle time control.

[0044] See Figure 2 As shown, an internal high-pressure forming emulsion control method uses the above-mentioned internal high-pressure forming emulsion system. After the press is powered on, the emulsion system is started, and the motor is started, the following steps are included:

[0045] S001 The supercharger ZYQ pre-works. The second hydraulic pump P2 is driven by the second motor M2 to send the emulsion in the emulsion tank to the supercharger ZYQ through the second integrated body CF2. The second hydraulic pump P2 is arranged in the second oil suction area of the emulsion tank. The emulsion in the second oil suction area is sent to the first filter NL1 for filtration through the second hydraulic pump. After being filtered by the first filter NL1, it enters the supercharger ZYQ after pressure control by the second overflow valve fb of the second integrated body CF2 and control by the second solenoid valves YV201 and YV202 to reach the pre-working state of the supercharger ZYQ. A first blockage alarm device SP1 is equipped on the first filter NL1. When an alarm message appears, the filter element of the first filter NL1 needs to be replaced.

[0046] S002 quickly fills the mold with liquid. The first hydraulic pump P1 is driven by the first motor M1 to send the emulsion in the emulsion tank to the mold through the first integrated body CF1. The first hydraulic pump P1 is arranged in the second oil suction area of the emulsion tank. After the pressure control of the first hydraulic pump P1 through the first overflow valve fa of the first integrated body CF1 and the control of the first solenoid valves YV101 and YV102 on the first cartridge valves ZC101 and ZC102, it enters the pipe in the mold to meet the process requirements of quick liquid filling. The first pressure gauge BP1 and the first pressure sensor XP1 are used to monitor and display the pressure of quick liquid filling, and can quickly confirm the working status of the first motor M1, the first hydraulic pump P1, and the first integrated body CF1. When the first solenoid valve YV101 is not energized, the first hydraulic pump P1 is in the unloading state.

[0047] S003 pre-boosts the pressure. The second hydraulic pump P2 is driven by the second motor M2 to send the emulsion in the emulsion tank to the mold through the second integrated body CF2 and the booster ZYQ. The second motor M2 drives the second hydraulic pump P2 to draw out the emulsion. After being filtered by the first filter NL1, it enters the pipe in the mold after the pressure control of the second overflow valve fb of the second integrated body CF2 and the direction control of the second solenoid valves YV201 and YV202 to meet the process requirements of pre-boosting the pressure. The second pressure gauge BP2 and the second pressure sensor XP2 are used to monitor and display the pressure of pre-liquid filling, and can quickly confirm the working status of the second motor M2, the second hydraulic pump P2, and the second integrated body CF2. When the second solenoid valve YV201 is not energized, the second hydraulic pump P2 is in the unloading state.

[0048] S004 performs hydroforming. The booster ZYQ sends the emulsion in the booster ZYQ to the mold for hydroforming. The booster ZYQ works to push the emulsion in the booster into the pipe in the mold to complete the bulging process at an appropriate pressure. The third pressure gauge BP3 and the third pressure sensor XP3 are used to monitor and display the pressure during product forming to meet the product forming requirements. After the product is formed, the mold is opened so that the emulsion in the pipe is collected and roughly filtered through the water receiving tray, and then flows into the first oil return area of the emulsion sedimentation tank through the pipeline. At the same time, the second motor M2 drives the second hydraulic pump P2 to draw out the emulsion. After being filtered by the first filter NL1, it enters the booster after the pressure control of the second overflow valve fb of the second integrated body CF2 and the direction control of the second solenoid valves YV201 and YV202 to reach the pre-working state of the booster.

[0049] The preliminary precipitation of the S005 emulsion liquid recovery: The emulsion liquid after die forming is sent to the first oil return area of the emulsion liquid sedimentation tank for precipitation, and after precipitation, it flows to the first oil suction area of the emulsion liquid sedimentation tank; when the liquid level of the emulsion liquid in the first oil return area of the emulsion liquid sedimentation tank rises to a certain height, it passes through the first filter screen NL6 on the partition to filter floating substances and automatically flows into the first oil suction area of the emulsion liquid sedimentation tank. The first oil return area in the emulsion liquid sedimentation tank is equipped with a first high liquid level relay BQ2.2 to prevent the emulsion liquid from overflowing the sedimentation tank. When the first high liquid level relay BQ2.2 sends a signal, it is necessary to clean the emulsion liquid sedimentation tank and the first filter screen NL6.

[0050] The S006 emulsion liquid filtration: The fourth hydraulic pump P4 is driven by the fourth motor M4 to send the emulsion liquid in the first oil suction area of the emulsion liquid sedimentation tank to the third filter NL3 for filtration; when the liquid level in the first oil suction area of the emulsion liquid sedimentation tank rises to a certain height, the fourth motor M4 is automatically started to drive the fourth hydraulic pump P4 to pump out the emulsion liquid in the first oil suction area of the emulsion liquid sedimentation tank. After being filtered by the third filter NL3, it enters the second oil return area of the emulsion oil tank. The filter here is the main oil return pipeline for the emulsion liquid to enter the emulsion system and is the main filter. It needs to filter most of the impurities and is prone to blockage. Therefore, the third filter NL3 adopts a double-barrel filter, that is, a double-barrel magnetic oil return filter. When the signal switch SP3.1 alarms and sends a signal, the other channel of the third filter NL3 can be directly switched and the blocked filter element can be replaced. Conversely, when the signal switch SP3.2 alarms and sends a signal, the other channel of the third filter NL3 can be directly switched and the blocked filter element can be replaced. Among them, the first oil suction area in the emulsion liquid sedimentation tank is equipped with a second liquid level relay BQ2.1. When it reaches the second low liquid level relay BQ2.1c, the fourth hydraulic pump P4 stops working. When it reaches the second high liquid level relay BQ2.1b, the fourth hydraulic pump P4 starts working. When it reaches the second ultra-high liquid level relay BQ2.1a, there is a risk that the emulsion liquid will overflow the emulsion liquid sedimentation tank. Therefore, when the liquid level in the first oil suction area of the emulsion liquid sedimentation tank exceeds BQ2.1a, the press is in a suspended working state, and each hydraulic pump group in the emulsion oil tank is in a unloading state to prevent the emulsion liquid from flowing into the emulsion liquid sedimentation tank and filling up the emulsion liquid sedimentation tank. When the liquid level of the emulsion liquid in the emulsion liquid sedimentation tank drops to the set BQ2.1b, the press and the emulsion system can continue to work.

[0051] The S007 emulsion is precipitated and filtered again. The emulsion after being filtered by the third filter NL3 is sent to the second oil return area of the emulsion tank. The emulsion in the second oil return area of the emulsion tank is cooled by the cooler CL driven by the third motor M3, and then enters the second oil suction area of the emulsion tank after being filtered by the second filter NL2. The magnetic filter NL4 adsorbs the magnetic metal particles in the emulsion in the second oil return area of the emulsion tank. The second oil return area in the emulsion tank is used for secondary precipitation, and at the same time, the magnetic filter NL4 is equipped to adsorb the magnetic metal particles in the emulsion to achieve the effect of cleaning the emulsion. The third motor M3 drives the third liquid pump P3 to pump out the emulsion in the second oil return area of the emulsion tank, which is cooled by the cooler CL and then flows into the second oil suction area after being filtered by the second filter NL2. The coolant source is the industrial-grade drain ball valve CW equipped, and its cooling medium is pure water, which effectively protects the cooler CL. The operation of the drain ball valve is controlled by the temperature sensor RT to ensure that the emulsion works at an appropriate temperature. The second oil return area and the second oil suction area of the emulsion tank are both equipped with liquid level relays. The fourth liquid level relay BQ1.1 is installed in the second oil suction area, and the third liquid level relay BQ1.2 is installed in the second oil return area to detect the height of the emulsion. When the emulsion reaches the third low liquid level relay BQ1.2c, the third hydraulic pump P3 is controlled to stop working. When the emulsion reaches the third high liquid level relay BQ1.2b, it is the normal working liquid level, and the third hydraulic pump P3 works. When the emulsion reaches the third ultra-high liquid level relay BQ1.2a, the initial addition of the emulsion is controlled to prevent excessive addition of the emulsion. When the emulsion reaches the fourth low liquid level relay BQ1.1c in the second oil suction area, both the first hydraulic pump P1 and the second hydraulic pump P2 stop working. When the emulsion reaches the fourth high liquid level relay BQ1.1b, it is the normal working liquid level, and the first hydraulic pump P1 and the second hydraulic pump P2 work. When the emulsion reaches the fourth ultra-high liquid level BQ1.1a, the initial addition of the emulsion is controlled to prevent excessive addition of the emulsion. The liquid level and liquid temperature gauge YW of the emulsion tank is used to observe the liquid addition amount and the emulsion amount at any time. The second filter screen NL5 is configured on the partition between the second oil return area and the second oil suction area of the emulsion tank to filter floating objects to ensure that there are no floating objects in the second oil suction area of the emulsion tank as much as possible. Drain ball valves QF are installed at the bottom of both the emulsion sedimentation tank and the emulsion tank for draining water during cleaning. At the same time, air filters KL are installed on the covers of the emulsion sedimentation tank and the emulsion tank for air circulation and filtration during system operation.

[0052] After completing the above steps, rapid liquid filling into the mold starts from S002, and the cycle work enters the next workpiece forming process.

Claims

1. An internal high-pressure forming emulsification system, comprising a mold, a supercharger, and an emulsification oil tank. The emulsification oil tank is provided with a first hydraulic pump P1 and a second hydraulic pump P2. A first motor M1 drives the first hydraulic pump P1 to be connected to the mold through a first integrated body CF1, for sending the emulsifying liquid in the emulsification oil tank to the mold for rapid liquid filling; a second motor M2 drives the second hydraulic pump P2 to be connected to the mold through a second integrated body CF2 and the supercharger ZYQ in sequence, for sending the emulsifying liquid in the emulsification oil tank to the mold after being pressurized by the supercharger ZYQ. It is characterized in that: It also includes an emulsion deposition tank. A water receiving tray for emulsion is provided at the lower end of the workbench of the mold. The water receiving tray for emulsion is connected to the emulsion deposition tank. A first oil absorption area and a first oil return area are provided in the emulsion deposition tank. A first filter screen NL6 is provided between the first oil absorption area and the first oil return area. A second oil absorption area and a second oil return area are provided in the emulsion tank. A second filter screen NL5 is provided between the second oil absorption area and the second oil return area. A liquid level and liquid temperature gauge YW, a magnetic filter NL4, and a temperature sensor RT are also provided in the second oil return area of the emulsion tank. A liquid level and liquid temperature gauge YW is also provided in the second oil absorption area of the emulsion tank. The emulsion in the first oil absorption area in the emulsion deposition tank is sent to a third filter NL3 by a fourth hydraulic pump driven by a fourth motor. After being filtered by the third filter NL3, it enters the second oil return area of the emulsion tank. The emulsion in the second oil return area is cooled by a cooler CL by a third hydraulic pump driven by a third motor and then filtered by a second filter NL2 and sent to the second oil absorption area. A first filter NL1 is provided between the second hydraulic pump and the second integrated body CF2. The first filter NL1 adopts a medium-pressure filter. A first blockage alarm device SP1 is connected to the first filter NL1. The second filter NL2 adopts a single-cylinder filter. A second blockage alarm device SP2 is connected to the second filter NL2. The third filter NL3 is a double-cylinder filter. A signal switch is connected to the third filter NL3.

2. The internal high-pressure forming emulsification system according to claim 1, wherein: The emulsion deposition tank adopts a paper tape filter.

3. The internal high-pressure forming emulsification system according to claim 1, wherein: Both the emulsion deposition tank and the emulsion tank are provided with a liquid level controller, an air filter KL, and an oil drain ball valve QF.

4. The internal high-pressure forming emulsification system according to claim 1, wherein: The first integrated body CF1 includes a first electromagnetic valve, a first overflow valve fa, and a first cartridge valve. The second integrated body CF2 includes a second electromagnetic valve and a second overflow valve fb.

5. The internal high-pressure forming emulsification system according to claim 1, characterized in that: The first integrated body CF1 is also provided with a first pressure gauge BP1 and a first pressure sensor XP1. The second integrated body CF2 is also provided with a second pressure gauge BP2 and a second pressure sensor XP2. The intensifier is provided with a third pressure gauge BP3 and a third pressure sensor XP3.

6. The internal high-pressure forming emulsification system according to claim 1, characterized in that The first hydraulic pump P1 adopts an immersion centrifugal pump. The second hydraulic pump P2 adopts a high-pressure vane pump.

7. An internal high-pressure forming emulsification control method, characterized in that: Using the internal high-pressure forming emulsion system according to any one of claims 1 to 6, it includes the following steps: S001 The intensifier ZYQ pre-works. The second hydraulic pump P2 is driven by a second motor M2 to send the emulsion in the emulsion tank to the intensifier ZYQ through the second integrated body CF2. S002 Rapidly fill the mold with liquid. The first hydraulic pump P1 is driven by a first motor M1 to send the emulsion in the emulsion tank to the mold through the first integrated body CF1. S003 Pre-pressurize. The second hydraulic pump P2 is driven by a second motor M2 to send the emulsion in the emulsion tank to the mold through the second integrated body CF2 and the intensifier ZYQ. S004 Hydraulic forming. The intensifier ZYQ sends the emulsion in the intensifier ZYQ to the mold for hydraulic forming. The preliminary precipitation of the S005 emulsion recycling: The emulsion after die forming is sent to the first oil return area of the emulsion sedimentation tank for precipitation, and after precipitation, it flows to the first oil suction area of the emulsion sedimentation tank; The S006 emulsion filtration: The fourth hydraulic pump P4 is driven by the fourth motor M4 to send the emulsion in the first oil suction area of the emulsion sedimentation tank to the third filter NL3 for filtration; The S007 emulsion secondary precipitation and filtration: The emulsion filtered by the third filter NL3 is sent to the second oil return area of the emulsion tank. The third hydraulic pump P3 is driven by the third motor M3 to cool the emulsion in the second oil return area of the emulsion tank through the cooler CL, and then it enters the second oil suction area of the emulsion tank after being filtered by the second filter NL2.

8. The internal high-pressure forming emulsification control method according to claim 7, characterized in that The S007 emulsion secondary precipitation and filtration further includes: Adsorbing the magnetic metal particles in the emulsion in the second oil return area of the emulsion tank through the magnetic filter NL4.

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