Automatic water and slag discharging system of vacuum equipment

Abstract

The invention discloses an automatic water and slag discharging system of vacuum equipment, which comprises an upper vacuum tank and a lower vacuum tank, the lower vacuum tank is arranged below the upper vacuum tank, the upper vacuum tank and the lower vacuum tank are connected through a first connecting pipeline, a first control valve is arranged on the first connecting pipeline, the upper vacuum tank is also provided with a second pipe orifice, and the second pipe orifice is provided with a second control valve. The upper vacuum tank is provided with a first pipe orifice, the second pipe orifice is connected with the lower vacuum tank through a second connecting pipeline, the second connecting pipeline is provided with a second control valve, the lower vacuum tank is provided with a blow-off pipeline, the blow-off pipeline is provided with a blow-off pump, and the upper vacuum tank and the lower vacuum tank are further provided with a first liquid level meter and a second liquid level meter respectively; according to the scheme, the electromagnetic valve is adopted to control opening and closing of the pneumatic stop valve to conduct vacuum lossless automatic switching, the rapid, efficient, economical and reliable drainage effect is achieved, and safe and reliable operation of a power system is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of tire manufacturing technology, specifically to an automatic drainage and slag removal system for vacuum equipment in a radial tire vulcanization power station. Background Technology

[0002] Many equipment in chemical enterprises require vacuum sources. As a buffer for the vacuum source, pipelines and buffer tanks are necessary. Many vacuum system media contain moisture and impurities, especially in the rubber processing industry. If the water and impurities in the system are not removed in time, they will greatly reduce the vacuum buffer, causing the system vacuum value to drop, the vacuum speed to slow down, the production efficiency to decrease, and even accidents or safety accidents to occur.

[0003] Because water in a sealed storage tank under high vacuum is difficult or even impossible to extract directly with a water pump, it is impossible to reduce the vacuum pressure or stop the vacuum pump to drain water under the constraints of continuous production conditions, which seriously affects production efficiency. Summary of the Invention

[0004] To address the problems mentioned in the background technology, this solution provides an automatic drainage and slag removal system for vacuum equipment. By using a liquid level control valve, it achieves seamless separation and merging of the upper and lower vacuum tanks to change the pressure of the lower vacuum tank, thus achieving a fast, efficient, economical, and reliable drainage effect. This ensures the safe and reliable operation of the power system, reduces investment, and significantly lowers operating costs.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: an automatic drainage and slag removal system for vacuum equipment, including an upper vacuum tank and a lower vacuum tank. The upper vacuum tank is provided with a first port connected to the main vacuum pumping pipeline. The lower vacuum tank is located below the upper vacuum tank. The upper and lower vacuum tanks are connected by a first connecting pipeline, on which a first control valve is installed. The upper vacuum tank is also provided with a second port, which is connected to the lower vacuum tank via a second connecting pipeline. A second control valve is installed on the second connecting pipeline. The lower vacuum tank is provided with a sewage discharge pipeline, on which a sewage pump is installed. A first level gauge and a second level gauge are also respectively installed on the upper and lower vacuum tanks. The control valve, the second control valve, and the sewage pump execute their respective opening or closing commands based on the high and low level output signals of the first and second level gauges. When the first level gauge detects that the liquid level in the upper vacuum tank has reached the low threshold, both the first and second control valves close. When the first level gauge detects that the liquid level in the upper vacuum tank has reached the high threshold, the first control valve opens and the second control valve closes, allowing the liquid in the upper vacuum tank to flow into the lower vacuum tank. When the second level gauge detects that the liquid level in the lower vacuum tank has reached the high threshold, the first control valve closes and the second control valve opens, and the sewage pump starts working. When the second level gauge detects that the liquid level in the lower vacuum tank has reached the low threshold, the sewage pump shuts down.

[0006] Furthermore, the first control valve is a two-way pneumatic valve, and the second control valve is a three-way pneumatic valve. The two ports of the two-way pneumatic valve are respectively connected to the upper vacuum tank and the lower vacuum tank, and the three ports of the three-way pneumatic valve are respectively connected to the upper vacuum tank, the lower vacuum tank, and atmospheric pressure air. When the first level gauge detects that the liquid level in the upper vacuum tank reaches the high-level threshold, the two ports of the two-way pneumatic valve open to connect the upper vacuum tank and the lower vacuum tank, and the first and second ports of the three-way pneumatic valve open to connect the upper vacuum tank and the lower vacuum tank, thus... The lower vacuum tank and the upper vacuum tank are connected to form a vacuum body, and the liquid in the upper vacuum tank flows into the lower vacuum tank. When the second level gauge detects that the liquid level in the lower vacuum tank reaches the high-level threshold, the two valve ports of the two-way pneumatic valve are closed, the first and second valve ports of the three-way pneumatic valve are closed, while the second and third valve ports are connected, allowing outside atmosphere to enter the lower vacuum tank. The lower vacuum tank instantly changes from vacuum to normal pressure, enabling the sewage pump to work normally, while the upper vacuum tank always maintains the vacuum pressure specified by the process without change, ensuring that the vacuum process required in the preceding steps is not affected in any way.

[0007] Furthermore, both the first and second level gauges are magnetic float level gauges, which have a simple structure, are easy to install, have complete detection functions, a large detection range, and high corrosion resistance and explosion-proof capabilities.

[0008] Furthermore, both the upper and lower vacuum tanks are equipped with pressure gauges, which are used to detect the vacuum pressure value inside the vacuum tanks.

[0009] Furthermore, the sewage pump is a vacuum pump, comprising a first water ring vacuum pump and a second water ring vacuum pump. The second water ring vacuum pump is installed in parallel with the first water ring vacuum pump via a pipeline. This scheme uses two water ring pumps in parallel for vacuum-assisted drainage. When the second level gauge detects that the liquid level in the lower vacuum tank reaches the low threshold, the first and second valve ports of the three-way pneumatic valve open, connecting the upper and lower vacuum tanks, making them a single vacuum body. The vacuum pump can evacuate both the upper and lower vacuum tanks to repeat the next round of operation, increasing the stability and efficiency of the equipment. Both the first and second water ring vacuum pumps are equipped with inlet pressure gauges at their inlet ends and outlet pressure gauges at their outlet ends. By comparing the inlet and outlet pressure gauges, it is possible to detect whether the first and second water ring vacuum pumps are running dry, thus determining whether they are operating normally.

[0010] Furthermore, both the upper and lower vacuum tanks are equipped with drain ports for easy manual inspection and cleaning.

[0011] Furthermore, the upper or lower vacuum tank may also be equipped with a spare interface, which can be used for system expansion when necessary.

[0012] Furthermore, it also includes a cooling tower, with a heat medium inlet and a cooling water outlet at the upper and lower ends, respectively. The upper vacuum tank is also provided with a vacuum medium outlet, which is connected to a vacuum medium pipeline. The vacuum medium pipeline is equipped with a first circulating water pump and a third control valve. The vacuum medium pipeline is connected to the heat medium inlet, which introduces the water vapor discharged from the upper vacuum tank into the cooling tower for cooling.

[0013] Furthermore, the cooling tower is also equipped with a water supply pipe, and the water supply pipe is equipped with a fourth control valve, which is an automatic water supply float valve.

[0014] Furthermore, the cooling tower is also equipped with a cooling fan to accelerate the cooling of the circulating water inside the tower and ensure the normal operation of the water ring vacuum pump.

[0015] Furthermore, a drain pipe is connected to the cooling water outlet, and a fifth control valve and a second circulating water pump are installed on the drain pipe.

[0016] Furthermore, a return water pipe is connected to the cooling water outlet, and the other end of the return water pipe extends into the cooling tower. A third circulating water pump is installed on the return water pipe, which can supply water ring seals for the vacuum pump and cool the pump body.

[0017] The beneficial effects of this invention are: This solution uses a liquid level control valve to achieve seamless separation and merging of the upper and lower vacuum tanks to change the pressure of the lower vacuum tank, thereby achieving a non-destructive automatic switching of vacuum and a fast, efficient, economical and reliable drainage effect, ensuring the safe and reliable operation of the power system. Attached Figure Description

[0018] Figure 1 This is a structural block diagram of the present invention. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific examples.

[0020] Automatic drainage and slag removal system for vacuum equipment, such as Figure 1As shown, the system includes a medium-temperature cooling tower 3, an upper vacuum tank 1, and a lower vacuum tank 2. The medium-temperature cooling tower 3 has a heat medium inlet at its upper end and a cooling water outlet at its lower end. The upper vacuum tank 1 has a first port connected to the main vacuum pipeline 10 of the vulcanization trench in the vulcanization workshop. The upper vacuum tank 1 also has a vacuum medium outlet, which is connected to the heat medium inlet via a vacuum medium pipeline 11. The lower vacuum tank 2 is located below the upper vacuum tank 1. The upper vacuum tank 1 and the lower vacuum tank 2 are connected by a first connecting pipeline, on which a first control valve 41 is installed. The upper end of the upper vacuum tank 1 also has a second port, which is connected to the lower vacuum tank 2 via a second connecting pipeline, on which a second control valve 42 is installed. The lower end of the lower vacuum tank 2 is connected to a drain pipe, on which a drain pump is installed. In this embodiment, the first control valve 41 is a two-way pneumatic valve, and the second control valve 42 is a three-way pneumatic valve. The two ports of the two-way pneumatic valve are connected to the upper vacuum tank 1 and the lower vacuum tank 2, and the three ports of the three-way pneumatic valve are connected to the upper vacuum tank 1, the lower vacuum tank 2, and atmospheric air, respectively. The upper vacuum tank 1 and the lower vacuum tank 2 are also equipped with a first level gauge 51 and a second level gauge 52, respectively. The first control valve 41, the second control valve 42, and the sewage pump execute their respective opening or closing commands based on the high and low level output signals of the first level gauge 51 and the second level gauge 52. In this embodiment, the first level gauge 51 and the second level gauge 52 will output a 24V power signal when they obtain high and low level signals. After the solenoid valve coil is energized, the two-way pneumatic valve opens, while the three-way pneumatic valve resets (closes, i.e., the upper vacuum tank and the lower vacuum tank are connected, but the lower vacuum tank is not connected to atmospheric air). When the first level gauge 51 detects that the liquid level in the upper vacuum tank 1 has reached the high-level threshold, the first control valve 41 opens and the second control valve 42 closes. The first and second valve ports of the first control valve 41 open, connecting the upper vacuum tank 1 and the lower vacuum tank 2, so that the lower vacuum tank 1 and the upper vacuum tank 2 are connected to form a vacuum body, and the liquid in the upper vacuum tank 1 flows into the lower vacuum tank 2. When the second level gauge 52 detects that the liquid level in the lower vacuum tank 2 has reached the high-level threshold, the first control valve 41 closes and the second control valve 42 opens, and both valve ports of the first control valve 41 close. The first and second valve ports of the second control valve 42 are closed, while the second and third valve ports are connected (i.e., the upper vacuum tank 1 and the lower vacuum tank 2 are not connected, but the lower vacuum tank 2 is connected to atmospheric air), allowing outside air to enter the lower vacuum tank 2. The lower vacuum tank 2 instantly changes from vacuum to atmospheric pressure, enabling the sewage pump to pump water normally, while the upper vacuum tank always maintains the vacuum pressure specified by the process without change, ensuring that the vacuum process required by the preceding process is not affected in any way; this process is repeated to achieve automated control operation, ensuring that the upper vacuum tank 1 and the preceding system always maintain the vacuum pressure value specified by the production process and are stable, reliable and safe.

[0021] Furthermore, both the first level gauge 51 and the second level gauge 52 are magnetic float level gauges, which have a simple structure, are easy to install, have complete detection functions, a large detection range, and high corrosion resistance and explosion-proof capabilities.

[0022] Furthermore, both the upper vacuum tank 1 and the lower vacuum tank 2 are equipped with pressure gauges 53, which are used to detect the vacuum pressure value inside the vacuum tank.

[0023] Furthermore, the upper vacuum tank 1 or the lower vacuum tank 2 may also be provided with a spare interface, which can be used for system expansion when necessary.

[0024] Furthermore, the sewage pump adopts a water ring vacuum pump, which includes a first water ring vacuum pump 61 and a second water ring vacuum pump 62 (one on and one on standby). The first water ring vacuum pump 61 and the second water ring vacuum pump 62 are installed in parallel on the main vacuum pipeline through a pipeline. The two vacuum pumps are in a one-on-one standby configuration. If one vacuum pump fails, the other vacuum pump can be activated immediately to ensure the normal operation of the system. When the second level gauge 52 detects that the liquid level in the lower vacuum tank 2 has reached the low threshold, the first control valve 41 opens and the second control valve 42 closes to connect the upper vacuum tank 1 and the lower vacuum tank 2, making the lower vacuum tank 1 and the upper vacuum tank 2 connected as a vacuum body. The vacuum pump can evacuate the upper vacuum tank 1 and the lower vacuum tank 2 until the vacuum degree in the upper vacuum tank 1 and the lower vacuum tank 2 reaches the standard, and then control the first water ring vacuum pump 61 or the second water ring vacuum pump 62 to shut down, so as to repeat the next round of operation, thereby increasing the stability of the equipment.

[0025] Furthermore, both the upper vacuum tank 1 and the lower vacuum tank 2 are equipped with drain ports for easy manual cleaning.

[0026] Furthermore, one-way valves are installed on the first connecting pipe and the sewage pipe. The one-way valves ensure that the water and impurities in the upper vacuum tank 1 can only flow from the upper vacuum tank 1 to the lower vacuum tank 2 in one direction, and from the lower vacuum tank 2 to the sewage pump, and then be discharged by the sewage pump.

[0027] Furthermore, the vacuum medium pipeline 11 is equipped with a first circulating water pump 63 and a third control valve 43. In this embodiment, the first circulating water pump 63 is also arranged in a parallel configuration of two pumps.

[0028] Furthermore, the medium-temperature cooling tower 3 is also equipped with a water supply pipe, and the water supply pipe is equipped with a fourth control valve 44. The fourth control valve 44 is an automatic water supply float valve, and the medium-temperature cooling tower is equipped with a liquid level float 31 that controls the opening and closing of the fourth control valve 44.

[0029] Furthermore, the medium-temperature cooling tower 3 is also equipped with a cooling fan to accelerate the cooling of the circulating water inside the tower and ensure the normal operation of the water ring vacuum pump.

[0030] Furthermore, a drain pipe is connected to the cooling water outlet, and a fifth control valve 45 and a second circulating water pump 64 are installed on the drain pipe. In this embodiment, the second circulating water pump 64 is also arranged in a parallel configuration.

[0031] Furthermore, the medium-temperature cooling tower 3 is also equipped with a return water pipe. One end of the return water pipe is connected to the cooling water outlet, and the other end extends into the medium-temperature cooling tower 3. A third circulating water pump is installed on the return water pipe. The third circulating water pump injects the room-temperature water cooled by the medium-temperature cooling tower into the first water ring vacuum pump 61 or the second water ring vacuum pump 62 for pump body cooling and rotor sealing. Then, the water is discharged from the first water ring vacuum pump 61 or the second water ring vacuum pump 62 back into the medium-temperature cooling tower for cooling, and this cycle continues continuously.

[0032] In this embodiment, the lower end of the upper vacuum tank 1 is connected to the lower vacuum tank 2 located below it via a two-way pneumatic valve, and the upper end of the upper vacuum tank 1 is connected to the lower vacuum tank 2 via a three-way pneumatic shut-off valve to maintain the vacuum level of both tanks. When the three-way pneumatic valve is closed and the two-way pneumatic valve is open, the two tanks are connected to form a vacuum buffer tank. The liquid and impurities in the upper vacuum tank 1 flow by gravity to the lower vacuum tank 2. This repeated replacement and drainage achieves automatic vacuum switching and drainage of the vacuum equipment without damage.

[0033] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the scope of the patent application and the description of the invention shall still fall within the scope of the patent of the present invention.

Claims

1. An automatic drainage and slag removal system for vacuum equipment, characterized in that, The system includes an upper vacuum tank and a lower vacuum tank. The upper vacuum tank has a first port connected to the main vacuum pipeline. The lower vacuum tank is located below the upper vacuum tank. The upper and lower vacuum tanks are connected by a first connecting pipeline, on which a first control valve is installed. The upper vacuum tank also has a second port, which is connected to the lower vacuum tank by a second connecting pipeline, on which a second control valve is installed. The lower vacuum tank has a drain pipe, on which a drain pump is installed. The upper and lower vacuum tanks are also equipped with a first level gauge and a second level gauge, respectively. When the first level gauge detects that the liquid level in the upper vacuum tank has reached the high-level threshold, the first control valve opens and the second control valve opens, allowing the liquid in the upper vacuum tank to flow into the lower vacuum tank; when the second level gauge detects that the liquid level in the lower vacuum tank has reached the high-level threshold, the first control valve closes and the second control valve closes, and the sewage pump starts working.

2. The automatic drainage and slag removal system for vacuum equipment according to claim 1, characterized in that, The first control valve is a two-way pneumatic valve, and the second control valve is a three-way pneumatic valve.

3. The automatic drainage and slag removal system for vacuum equipment according to claim 2, characterized in that, The two ports of the two-way pneumatic valve are respectively connected to the upper vacuum tank and the lower vacuum tank, and the three ports of the three-way pneumatic valve are respectively connected to the upper vacuum tank, the lower vacuum tank, and atmospheric air. When the first level gauge detects that the liquid level in the upper vacuum tank reaches the high-level threshold, the two ports of the two-way pneumatic valve open to connect the upper and lower vacuum tanks, and the first and second ports of the three-way pneumatic valve open to connect the upper and lower vacuum tanks, so that the lower and upper vacuum tanks are connected to form a vacuum body, and the liquid in the upper vacuum tank flows into the lower vacuum tank. When the second level gauge detects that the liquid level in the lower vacuum tank reaches the high-level threshold, the two ports of the two-way pneumatic valve close, the first and second ports of the three-way pneumatic valve close, and the second and third ports of the three-way pneumatic valve open, allowing outside air to enter the lower vacuum tank, changing the pressure inside the lower vacuum tank from vacuum to atmospheric pressure, so that the sewage pump can work normally, while the upper vacuum tank always remains a vacuum.

4. The automatic drainage and slag removal system for vacuum equipment according to claim 1, characterized in that, Both the first and second level gauges are magnetic float level gauges.

5. The automatic drainage and slag removal system for vacuum equipment according to claim 1, characterized in that, Both the upper and lower vacuum tanks are equipped with pressure gauges.

6. The automatic drainage and slag removal system for vacuum equipment according to claim 1, characterized in that, The sewage pump includes a first water ring vacuum pump and a second water ring vacuum pump, which are installed in parallel on the sewage pipe.

7. The automatic drainage and slag removal system for vacuum equipment according to claim 6, characterized in that, Both the first and second water ring vacuum pumps are equipped with inlet pressure gauges at their inlet ends, and both the first and second water ring vacuum pumps are equipped with outlet pressure gauges at their outlet ends.

8. The automatic drainage and slag removal system for vacuum equipment according to claim 1, characterized in that, The upper vacuum tank is also equipped with a spare interface for system expansion.

9. The automatic drainage and slag removal system for vacuum equipment according to claim 1, characterized in that, It also includes a cooling tower, with a heat medium inlet and a cooling water outlet at the upper and lower ends, respectively. The upper vacuum tank is connected to the heat medium inlet of the cooling tower through a vacuum medium pipeline, and a first circulating water pump and a third control valve are provided on the vacuum medium pipeline.

10. The automatic drainage and slag removal system for vacuum equipment according to claim 9, characterized in that, The cooling tower is also equipped with a water supply pipe, which is equipped with a fourth control valve; the cooling water outlet is connected to a drain pipe and a return water pipe, the drain pipe is equipped with a fifth control valve and a second circulating water pump, and the return water pipe is equipped with a third circulating water pump.

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