Automatic non-condensed steam discharging device of evaporator for producing anhydrous sodium sulphate

Abstract

The invention discloses an evaporator non-condensed steam automatic discharge device for anhydrous sodium sulphate production, and relates to the technical field of discharge devices.The evaporator non-condensed steam automatic discharge device comprises an evaporation tank, a vibration motor, a discharge tank, a detection device, a cooling device and an exhaust device.The vibration motor is arranged in the evaporation tank, the evaporation tank is connected with the vibration motor, and the evaporation tank is communicated with the discharge tank through a pipeline; the exhaust device is connected with the detection device, the discharge tank is connected with the cooling device, the exhaust device is arranged in the discharge tank, the discharge tank is fixedly connected with the exhaust device, anhydrous sodium sulphate is put into the evaporation tank to be evaporated, moisture in the anhydrous sodium sulphate is removed, evaporated water vapor and non-condensable vapor enter the discharge tank, the cooling device condenses the water vapor into water, and the water vapor and the non-condensable vapor enter the discharge tank. The non-condensable gas remains above the exhaust tank, the pressure level above the exhaust tank is detected through the detection device, the exhaust rate of the exhaust device is controlled according to the pressure level detected by the detection device, and the non-condensable gas above the exhaust tank is exhausted.

Description

Technical Field

[0001] The invention relates to the technical field of discharge devices, in particular to an automatic discharge device for non-condensable steam of an evaporator used in the production of sodium sulphate. Background Art

[0002] Anhydrous sodium sulfate, also known as Glauber's salt, is widely used in industry. It is generally obtained by dissolving natural Glauber's salt and clarifying it, vacuum evaporating and dehydrating the clarified liquid, thickening it, centrifuging it, and drying it to obtain anhydrous sodium sulfate.

[0003] At present, the process of producing anhydrous sodium sulfate will produce non-condensable steam, which is a general term for inert gases. When the content of non-condensable steam is high, it will affect the production effect of alum and needs to be discharged. However, the speed of non-condensable steam generation is different in different periods, so it is necessary to control the discharge rate of non-condensable steam to prevent too much heat from being taken away during the discharge process. At the same time, after the evaporation is completed, alum may remain inside the evaporator and is not easy to be completely removed, which brings certain troubles to the workers. Summary of the invention

[0004] The object of the present invention is to provide an automatic discharge device for non-condensable steam of an evaporator used in the production of sodium sulphate, so as to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions: The invention discloses an automatic non-condensable steam discharge device of an evaporator for producing sodium sulphate, comprising an evaporation tank, a vibration motor, a discharge tank, a detection device, a cooling device and an exhaust device. The vibration motor is arranged in the evaporation tank, the evaporation tank is connected to the vibration motor, the evaporation tank is connected to the discharge tank through pipelines, the exhaust device is connected to the detection device, the discharge tank is connected to the cooling device, the exhaust device is arranged in the discharge tank, and the discharge tank and the exhaust device are tightly connected.

[0006] The water in the alum is removed by putting it into an evaporation tank for evaporation. During the evaporation process, the evaporation tank is vibrated by a vibration motor to make the alum in the evaporation tank heated more evenly. The evaporated water vapor and non-condensable gas enter the discharge tank through the evaporation tank, and the water vapor is condensed into water by a cooling device. The non-condensable gas remains above the discharge tank. The pressure level above the discharge tank is detected by a detection device, and the exhaust rate of the exhaust device is controlled according to the pressure level detected by the detection device to discharge the non-condensable gas above the exhaust tank.

[0007] Furthermore, the evaporator includes a tank body and an evaporating cylinder, the tank body is provided with a feed port, a discharge port and a steam hole, the evaporating cylinder is provided with a cleaning device, the steam hole is connected to the discharge tank, the tank body is tightly connected to the vibration motor, and the output end of the vibration motor is tightly connected to the evaporating cylinder.

[0008] The tank body is used as the main installation foundation for the installation and positioning of other devices. An electronic valve is set on the discharge port, and the opening and closing of the discharge port is controlled by the electronic valve. The alum is sent to the evaporating cylinder through the feed port. During the evaporation process, the evaporated steam and non-condensable gas enter the discharge tank through the steam hole for cooling and discharge. After the evaporation is completed, the alum flows out through the discharge port. The residual alum in the evaporating cylinder is cleaned by the cleaning device and flows out through the discharge port.

[0009] Furthermore, the cleaning device includes a driving motor, a cleaning plate, a rotating motor and a cleaning brush. The output end of the driving motor is tightly connected to the cleaning plate. The cleaning plate is provided with an installation cavity. The rotating motor is placed in the installation cavity. The rotating motor is tightly connected to the installation cavity. The output end of the rotating motor is tightly connected to the cleaning brush.

[0010] When evaporation is completed, the electronic valve on the discharge port opens, allowing the alum in the evaporation tube to flow out. When the alum stops flowing out, the cleaning plate is driven to rotate by the output torque of the driving motor. At the same time, the output torque of the rotating motor drives the cleaning brush to rotate. The alum in the evaporation tube is broken up by the cleaning brush. The broken alum falls to the bottom of the evaporation tube under the action of gravity, and then flows out from the discharge port.

[0011] Furthermore, a drain pipe is provided on the discharge tank, and the drain pipe is connected to the discharge tank pipeline. An air inlet and an air outlet are also provided on the discharge tank, and the air inlet and the steam hole are connected.

[0012] An electronic valve is provided on the drain pipe, and the water vapor is condensed into water through the cooling device. The condensed water is stored in the discharge tank. The drain pipe is controlled by the electronic valve to release the water in the discharge tank. The gas evaporated from the alum in the evaporating cylinder flows into the discharge tank through the steam hole and the air inlet hole, and then is cooled and discharged by the cooling device and the exhaust device.

[0013] Furthermore, the cooling device includes a heat sink, a water inlet pipe, a water outlet pipe and a cooler. The heat sink is placed in a discharge tank. A cooling water pipe is provided in the heat sink. The cooling water pipe is connected to the water inlet pipe. The end of the cooling water pipe away from the water inlet pipe is connected to the water outlet pipe. The water inlet pipe passes through the discharge tank and is connected to the output end of the cooler. The water inlet pipe is firmly connected to the discharge tank. The water outlet pipe passes through the discharge tank and is connected to the input end of the cooler. The water inlet pipe is firmly connected to the discharge tank.

[0014] The radiator serves as the main condensing device. When the water vapor with higher temperature enters the discharge tank through the air inlet, the water vapor with higher temperature contacts the radiator with lower temperature and condenses into water droplets. The condensed water droplets then flow from the higher position of the radiator to the edge of the radiator and finally fall into the discharge tank. At the same time, the cooler cools the water and then sends it into the radiator through the water inlet pipe, taking away the heat on the radiator and accelerating the cooling rate of the steam. The heated water flows out from the water outlet pipe and enters the cooler for cooling, thus performing circulating cooling.

[0015] Furthermore, the detection device includes a shell, a waterproof breathable membrane and a chip. The shell and the exhaust device are tightly connected. The shell is provided with an air pressure hole. The outer surface of the shell is covered with a waterproof breathable membrane. The chip is placed in the shell. The chip and the shell are tightly connected.

[0016] The shell serves as the main installation base for the installation of other components. It filters the moisture in the environment through a waterproof and breathable membrane, allowing only gas to enter the shell. The air pressure is detected by a chip, and then the cross-sectional area of ​​the exhaust device passing the water vapor is controlled, thereby controlling the exhaust rate.

[0017] Furthermore, the exhaust device includes a support frame, an exhaust plate and an exhaust motor. The support frame is tightly connected to the discharge tank, the exhaust plate is placed in the support frame, the exhaust plate and the support frame are rotatably connected, the exhaust motor and the support frame are tightly connected, the exhaust motor output end and the exhaust plate are tightly connected, and the support frame and the shell are tightly connected.

[0018] The exhaust motor serves as the main driving device. The exhaust motor outputs torque to drive the exhaust plate to rotate. The exhaust plate rotates and is sent into the support frame to form a certain gap, so that the non-condensable gas flows out from the gap. The working state of the exhaust motor is controlled according to the pressure detected by the chip, thereby controlling the size of the gap and ultimately controlling the emission rate of the non-condensable gas.

[0019] Furthermore, a vacuum device is provided on one side of the discharge tank, and the air outlet is connected to a pipeline of the vacuum device.

[0020] A negative pressure area is formed below the air outlet through vacuum equipment, and the non-condensable gas flowing into the top of the exhaust plate is sucked out from the air outlet through the negative pressure to achieve automatic exhaust.

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. A cleaning device is provided. The cleaning device can be used to clean the residual sodium sulfate inside the evaporator at the end of evaporation, and the sodium sulfate inside the evaporator can be completely collected.

[0022] 2. The waterproof and breathable membrane can effectively prevent the chip from being damaged by water vapor and increase the service life of the chip.

[0023] 3. A detection device and an exhaust device are set up. The internal pressure is detected by the detection device, and then the opening size of the exhaust device is controlled to control the discharge rate of non-condensable steam, thereby reducing the heat loss in the evaporation cylinder and increasing the water vapor evaporation rate of the alum. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the discharge tank of the present invention; Figure 3 for Figure 2 An enlarged view of a part A; Figure 4 It is a schematic diagram of the structure of the cooling device of the present invention; Figure 5 It is a schematic diagram of the structure of the cleaning device of the present invention; Figure 6 for Figure 5 An enlarged view of detail B.

[0025] In the figure: 1. evaporator; 11. tank body; 111. feed port; 112. discharge port; 113. steam hole; 12. evaporator tube; 121. cleaning device; 122. drive motor; 123. cleaning plate; 1231. installation cavity; 124. rotating motor; 125. cleaning brush; 2. vibration motor; 3. discharge tank; 31. drain pipe; 32. air inlet; 33. air outlet; 4. detection device; 41. shell; 411. air pressure hole; 42. waterproof breathable membrane; 43. chip; 5. cooling device; 51. heat sink; 52. water inlet pipe; 53. water outlet pipe; 54. cooler; 6. exhaust device; 61. support frame; 62. exhaust sheet; 63. exhaust motor. DETAILED DESCRIPTION

[0026] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0027] Example: Figure 1-Figure 6 As shown, the present invention provides a technical solution of an automatic non-condensable steam discharge device of an evaporator for producing sodium sulphate, comprising an evaporator 1, a vibration motor 2, a discharge tank 3, a detection device 4, a cooling device 5 and an exhaust device 6, wherein the vibration motor 2 is arranged in the evaporator 1, the evaporator 1 is connected to the vibration motor 2, the evaporator 1 is connected to the discharge tank 3 through a pipeline, the exhaust device 6 is connected to the detection device 4, the discharge tank 3 is connected to the cooling device 5, the exhaust device 6 is arranged in the discharge tank 3, and the discharge tank 3 and the exhaust device 6 are fastened.

[0028] The water in the sodium sulphate is removed by putting sodium sulphate into an evaporation tank 1 for evaporation. During the evaporation process, the evaporation tank 1 is vibrated by a vibration motor 2 so that the sodium sulphate in the evaporation tank 1 is heated more evenly. The evaporated water vapor and non-condensable gas enter the discharge tank 3 through the evaporation tank 1. The water vapor is condensed into water by a cooling device 5, and the non-condensable gas remains above the discharge tank 3. The pressure level above the discharge tank 3 is detected by a detection device 4. The exhaust rate of the exhaust device 6 is controlled according to the pressure level detected by the detection device 4 to discharge the non-condensable gas above the exhaust tank.

[0029] like Figure 1 and Figure 2 As shown, the evaporation tank 1 includes a tank body 11 and an evaporation tube 12. The tank body 11 is provided with a feed inlet 111, a discharge port 112 and a steam hole 113. The evaporation tube 12 is provided with a cleaning device 121. The steam hole 113 is connected to the discharge tank 3. The tank body 11 is firmly connected to the vibration motor 2, and the output end of the vibration motor 2 is firmly connected to the evaporation tube 12.

[0030] The tank body 11 is used as the main installation foundation for the installation and positioning of other devices. An electronic valve is arranged on the discharge port 112, and the opening and closing of the discharge port 112 is controlled by the electronic valve. The alum is delivered to the evaporating tube 12 through the feed port 111. During the evaporation process, the evaporated steam and non-condensable gas enter the discharge tank 3 through the steam hole 113 for cooling and discharge. After the evaporation is completed, the alum flows out through the discharge port 112. The residual alum in the evaporating tube 12 is cleaned by the cleaning device 121 and flows out through the discharge port 112.

[0031] like Figure 4-Figure 6 As shown, the cleaning device 121 includes a driving motor 122, a cleaning plate 123, a rotating motor 124 and a cleaning brush 125. The output end of the driving motor 122 is fastened to the cleaning plate 123. The cleaning plate 123 is provided with an installation cavity 1231. The rotating motor 124 is placed in the installation cavity 1231. The rotating motor 124 and the installation cavity 1231 are fastened, and the output end of the rotating motor 124 is fastened to the cleaning brush 125.

[0032] When evaporation is completed, the electronic valve on the discharge port 112 opens, allowing the alum in the evaporation tube 12 to flow out. When the alum stops flowing out, the driving motor 122 outputs a torque to drive the cleaning plate 123 to rotate. At the same time, the rotating motor 124 outputs a torque to drive the cleaning brush 125 to rotate. The alum in the evaporation tube 12 is broken up by the cleaning brush 125. The broken alum falls to the bottom of the evaporation tube 12 under the action of gravity, and then flows out from the discharge port 112.

[0033] like Figure 1 and Figure 2As shown, the discharge tank 3 is provided with a drain pipe 31, which is connected to the discharge tank 3 pipeline. The discharge tank 3 is also provided with an air inlet 32 ​​and an air outlet 33, which is connected to the steam hole 113.

[0034] An electronic valve is provided on the drain pipe 31, and the water vapor is condensed into water by the cooling device 5. The condensed water is stored in the discharge tank 3. The drain pipe 31 is controlled by the electronic valve to discharge the water in the discharge tank 3. The gas evaporated from the alum in the evaporation tube 12 flows into the discharge tank 3 through the steam hole 113 and the air inlet 32, and then is cooled and discharged by the cooling device 5 and the exhaust device 6.

[0035] like Figure 1 , Figure 2 and Figure 4 As shown, the cooling device 5 includes a radiator 51, a water inlet pipe 52, a water outlet pipe 53 and a cooler 54. The radiator 51 is placed in the discharge tank 3. A cooling water pipe is provided in the radiator 51. The cooling water pipe is connected to the water inlet pipe 52. The end of the cooling water pipe away from the water inlet pipe 52 is connected to the water outlet pipe 53. The water inlet pipe 52 passes through the discharge tank 3 and is connected to the output end of the cooler 54. The water inlet pipe 52 and the discharge tank 3 are tightly connected. The water outlet pipe 53 passes through the discharge tank 3 and is connected to the input end of the cooler 54. The water inlet pipe 52 and the discharge tank 3 are tightly connected.

[0036] The radiator 51 serves as the main condensing device. When the water vapor with a higher temperature enters the discharge tank 3 through the air inlet 32, the water vapor with a higher temperature contacts the radiator 51 with a lower temperature and condenses into water droplets. The condensed water droplets then flow from a higher position of the radiator 51 to the edge of the radiator 51 and finally fall into the discharge tank 3. At the same time, the cooler 54 cools the water and then sends it to the radiator 51 through the water inlet pipe 52, taking away the heat on the radiator 51 and accelerating the cooling rate of the steam. The heated water flows out from the water outlet pipe 53 and enters the cooler 54 for cooling, thereby performing circulating cooling.

[0037] like Figure 2 and Figure 3 As shown, the detection device 4 includes a shell 41, a waterproof breathable membrane 42 and a chip 43. The shell 41 and the exhaust device 6 are tightly connected. An air pressure hole 411 is provided on the shell 41. The outer surface of the shell 41 is covered with a waterproof breathable membrane 42. The chip 43 is placed in the shell 41, and the chip 43 and the shell 41 are tightly connected.

[0038] The shell 41 serves as the main installation base for installing other components. The moisture in the environment is filtered through the waterproof and breathable membrane 42, and only the gas is allowed to enter the shell 41. The air pressure is detected by the chip 43, and then the cross-sectional area of ​​the exhaust device 6 passing the water vapor is controlled, thereby controlling the exhaust rate.

[0039] like Figure 2 and Figure 4 As shown, the exhaust device 6 includes a support frame 61, an exhaust plate 62 and an exhaust motor 63. The support frame 61 is tightly connected to the discharge tank 3, the exhaust plate 62 is placed in the support frame 61, the exhaust plate 62 and the support frame 61 are rotatably connected, the exhaust motor 63 is tightly connected to the support frame 61, the output end of the exhaust motor 63 is tightly connected to the exhaust plate 62, and the support frame 61 is tightly connected to the shell 41.

[0040] The exhaust motor 63 serves as the main driving device. The exhaust motor 63 outputs a rotational torque to drive the exhaust plate 62 to rotate. The exhaust plate 62 rotates and is sent into the support frame 61 to form a certain gap, so that the non-condensable gas flows out from the gap. The working state of the exhaust motor 63 is controlled according to the pressure detected by the chip 43, thereby controlling the size of the gap, and finally controlling the emission rate of the non-condensable gas.

[0041] like Figure 1 As shown, a vacuum device is provided on one side of the discharge tank 3, and the air outlet 33 is connected to the vacuum device pipeline.

[0042] A negative pressure area is formed below the air outlet 33 by a vacuum device, and the non-condensable gas flowing into the top of the exhaust plate 62 is sucked out from the air outlet 33 by the negative pressure, thereby achieving automatic exhaust.

[0043] The working principle of the present invention is as follows: sodium sulfate is sent to the evaporation tube 12 through the feed port 111. During the evaporation process, the gas evaporated from the sodium sulfate in the evaporation tube 12 flows into the discharge tank 3 through the steam hole 113 and the air inlet 32. The water vapor with a higher temperature contacts the heat sink 51 with a lower temperature and condenses into water droplets. The condensed water droplets then flow from a higher position of the heat sink 51 to the edge of the heat sink 51 and finally fall into the discharge tank 3. At the same time, the cooler 54 cools the water and then sends it to the heat sink 51 through the water inlet pipe 52, taking away the heat on the heat sink 51 and accelerating the cooling rate of the steam. The heated water flows out from the water outlet pipe 53 and enters the cooler 54 for cooling. The circulating cooling is performed, and the non-condensable gas continues to diffuse upward. Then, the air pressure in the discharge tank 3 is detected by the chip 43, and the exhaust motor 63 is controlled according to the air pressure. Working state, so that the exhaust motor 63 outputs a rotational torque to drive the exhaust plate 62 to rotate, and the exhaust plate 62 rotates and is sent to the support frame 61 to form a certain gap, and the non-condensable gas flows out from the gap, and then the vacuum equipment forms a negative pressure area below the air outlet 33, and the non-condensable gas flowing into the top of the exhaust plate 62 is sucked out from the air outlet 33 through the negative pressure, so as to realize automatic exhaust. After evaporation is completed, the electronic valve on the discharge port 112 opens, so that the alum in the evaporation tube 12 flows out, until the alum no longer flows out, and the driving motor 122 outputs a rotational torque to drive the cleaning plate 123 to rotate, and at the same time, the rotating motor 124 outputs a rotational torque to drive the cleaning brush 125 to rotate, and the alum in the evaporation tube 12 is broken up by the cleaning brush 125, and the broken alum falls to the bottom of the evaporation tube 12 under the action of gravity, and then flows out from the discharge port 112.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic discharge device for non-condensable steam from an evaporator for producing sodium sulfate, characterized in that: The automatic discharge device comprises an evaporation tank (1), a vibration motor (2), a discharge tank (3), a detection device (4), a cooling device (5) and an exhaust device (6); the evaporation tank (1) is provided with a vibration motor (2); the evaporation tank (1) and the vibration motor (2) are connected; the evaporation tank (1) and the discharge tank (3) are connected via a pipeline; the exhaust device (6) and the detection device (4) are connected; the discharge tank (3) and the cooling device (5) are connected; the exhaust device (6) is placed in the discharge tank (3); and the discharge tank (3) and the exhaust device (6) are tightly connected.

2. The automatic non-condensable steam discharge device of the evaporator for producing sodium sulfate according to claim 1, characterized in that: The evaporation tank (1) comprises a tank body (11) and an evaporation cylinder (12); the tank body (11) is provided with a feed inlet (111), a discharge outlet (112) and a steam hole (113); the evaporation cylinder (12) is provided with a cleaning device (121); the steam hole (113) is connected to a discharge tank (3); the tank body (11) is tightly connected to a vibration motor (2); and the output end of the vibration motor (2) is tightly connected to the evaporation cylinder (12).

3. The automatic non-condensable steam discharge device of the evaporator for producing sodium sulfate according to claim 2, characterized in that: The cleaning device (121) comprises a driving motor (122), a cleaning plate (123), a rotating motor (124) and a cleaning brush (125); the output end of the driving motor (122) is tightly connected to the cleaning plate (123); a mounting cavity (1231) is provided on the cleaning plate (123); the rotating motor (124) is placed in the mounting cavity (1231); the rotating motor (124) and the mounting cavity (1231) are tightly connected; and the output end of the rotating motor (124) is tightly connected to the cleaning brush (125).

4. The automatic non-condensable steam discharge device of the evaporator for producing sodium sulfate according to claim 3, characterized in that: The discharge tank (3) is provided with a drain pipe (31), the drain pipe (31) is connected to the discharge tank (3) pipeline, and the discharge tank (3) is also provided with an air inlet (32) and an air outlet (33), the air inlet (32) is connected to the steam hole (113).

5. The automatic discharge device for non-condensable steam from an evaporator for producing sodium sulfate according to claim 4, characterized in that: The cooling device (5) comprises a heat sink (51), a water inlet pipe (52), a water outlet pipe (53) and a cooler (54); the heat sink (51) is disposed in a discharge tank (3); a cooling water pipe is disposed in the heat sink (51); the cooling water pipe is connected to the water inlet pipe (52); an end of the cooling water pipe away from the water inlet pipe (52) is connected to the water outlet pipe (53); the water inlet pipe (52) passes through the discharge tank (3) and is connected to the output end pipe of the cooler (54); the water inlet pipe (52) and the discharge tank (3) are tightly connected; the water outlet pipe (53) passes through the discharge tank (3) and is connected to the input end pipe of the cooler (54); the water inlet pipe (52) and the discharge tank (3) are tightly connected.

6. The automatic non-condensable steam discharge device of the evaporator for producing sodium sulfate according to claim 5, characterized in that: The detection device (4) comprises a housing (41), a waterproof breathable membrane (42) and a chip (43); the housing (41) and the exhaust device (6) are tightly connected; an air pressure hole (411) is provided on the housing (41); the outer surface of the housing (41) is covered with a waterproof breathable membrane (42); the chip (43) is placed inside the housing (41); and the chip (43) and the housing (41) are tightly connected.

7. The automatic discharge device for non-condensable steam from an evaporator for producing sodium sulfate according to claim 6, characterized in that: The exhaust device (6) comprises a support frame (61), an exhaust plate (62) and an exhaust motor (63); the support frame (61) is tightly connected to the exhaust tank (3); the exhaust plate (62) is placed in the support frame (61); the exhaust plate (62) and the support frame (61) are rotatably connected; the exhaust motor (63) and the support frame (61) are tightly connected; the output end of the exhaust motor (63) and the exhaust plate (62) are tightly connected; and the support frame (61) and the housing (41) are tightly connected.

8. The automatic non-condensable steam discharge device of the evaporator for producing sodium sulfate according to claim 4, characterized in that: A vacuum device is provided on one side of the discharge tank (3), and the air outlet (33) is connected to a pipeline of the vacuum device.

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