Gas cleaning device for crusher

Abstract

The utility model discloses a gas cleaning device for a crusher. The gas cleaning device comprises a dust washing unit for removing gas dust, a drying unit for removing gas moisture, a monitoring unit for monitoring oxygen concentration in gas and a one-way valve which are connected in sequence. The dust washing unit is communicated with an air outlet of the crusher through a high-pressure pump and a guide pipe; the one-way valve is communicated with a second air inlet of the crusher through a guide pipe; the high-pressure pump, the monitoring unit and the one-way valve are all electrically connected with the controller. The gas in the crusher is sampled and pumped out of the crusher, the to-be-detected gas subjected to dust washing and drying does not damage an oxygen monitoring sensor in the monitoring unit, and the monitoring unit can accurately measure the oxygen concentration.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection equipment, in particular to a gas cleaning device for a crusher. Background Art

[0002] To prevent explosions, recycled lithium batteries must be crushed under nitrogen protection. The oxygen content in the protective gas must be monitored in real time. If the oxygen content exceeds a set value, the machine must be shut down until normal operation is restored. Currently, oxygen monitoring sensors are commonly installed in the crushing chamber to monitor oxygen concentration. However, due to the high dust content within the crushing chamber, the probes of the oxygen monitoring sensors quickly become covered with dust, affecting monitoring accuracy. This necessitates frequent removal and cleaning of the sensors, which not only affects the nitrogen protection environment in the crushing chamber but also increases the workload of workers. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a gas cleaning device for a crusher, which solves the problem in the prior art that the oxygen monitoring sensor is easily covered with dust, thereby affecting the monitoring accuracy.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is:

[0005] Provided is a gas cleaning device for a crusher, comprising a dust washing unit for removing dust from the gas, a drying unit for removing moisture from the gas, a monitoring unit for monitoring the oxygen concentration in the gas, and a one-way valve, which are connected in sequence;

[0006] The dust washing unit is connected to the air outlet of the crusher through a high-pressure pump and a conduit, and the one-way valve is connected to the second air inlet of the crusher through the conduit; the high-pressure pump, the monitoring unit and the one-way valve are all electrically connected to the controller.

[0007] The beneficial effects of this utility model are as follows: a high-pressure pump draws the gas to be tested into a conduit and into the interior of the gas cleaning device. The gas to be tested first passes through a dust scrubber to remove any dust, and then passes through a drying unit to remove moisture. The treated gas is free of dust, preventing dust from adhering to the oxygen monitoring sensor, thereby enabling accurate oxygen concentration measurement. Furthermore, the tested gas is re-introduced into the crusher, forming a sealed circuit between the gas cleaning device and the crusher, thus preventing gas waste.

[0008] Preferably, the dust-cleaning unit comprises a sealed housing containing dust-cleaning water. A conduit is sealedly connected to the inlet and outlet of the housing, with the inlet conduit extending into the dust-cleaning water and the outlet conduit positioned above the surface of the water. Nitrogen and oxygen are both insoluble in water. After being pumped into the water by a high-pressure pump, their low density causes them to automatically rise to the top of the housing and be discharged through the conduit, leaving the dust inside.

[0009] Preferably, the drying unit includes drying particles located within a sealed bottle. A conduit is sealedly connected to the inlet and outlet of the bottle, respectively. The inlet conduit is connected to the dust scrubber, and the outlet conduit is connected to a one-way valve. The drying particles can absorb moisture from the gas to be tested.

[0010] Preferably, the monitoring unit comprises an oxygen monitoring sensor which is installed inside the bottle body near the outlet.

[0011] Preferably, a condensing unit is connected between the dust-washing unit and the drying unit. The condensing unit includes a gas inlet and a gas outlet. The gas inlet is connected to the dust-washing unit via a conduit, and the gas outlet is connected to the drying unit. The condensing unit can pre-treat the gas, removing most of the water vapor in the gas through condensation. Any remaining water vapor is then removed by the drying unit, significantly reducing the frequency of replacement of the drying particles in the drying unit.

[0012] Preferably, the condensing unit is a shell and tube heat exchanger, which includes a shell and heat exchange tubes inside the shell; the gas inlet and gas outlet are both opened on the outer wall of the shell, and the outer wall of the shell is also provided with a cooling medium inlet, a condensed water outlet and a cooling medium outlet; the gas inlet, gas outlet and condensed water outlet are connected to the interior of the shell; the cooling medium inlet and cooling medium outlet are connected to the heat exchange tubes.

[0013] The beneficial effects of the above technical solution are: the cooling medium in the condensing unit exchanges heat with the gas to be tested, the gas to be tested is cooled, and the water carried in the gas is liquefied and separated, and the gas to be tested after dehydration enters the drying unit.

[0014] Preferably, a drain valve electrically connected to the controller is provided on the condensed water outlet, and the condensed water is discharged by controlling the drain valve by the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a gas cleaning device for a crusher;

[0016] Figure 2 This is an enlarged schematic diagram of the condensing unit.

[0017] Among them, 10, crusher; 11, first air inlet; 12, second air inlet; 13, air outlet; 20, high-pressure pump; 30, dust washing unit; 40, duct; 50, condensation unit; 51, gas inlet; 52, cooling medium inlet; 53, condensate outlet; 54, cooling medium outlet; 55, gas outlet; 56, drain valve; 60, drying unit; 61, drying particles; 70, monitoring unit; 80, one-way valve. DETAILED DESCRIPTION

[0018] The specific implementation methods of the present invention are described below to facilitate understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific implementation methods. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the appended claims, these changes are obvious, and all utility model creations using the concept of the present invention are protected.

[0019] like Figure 1 As shown, the gas cleaning device for a crusher of this embodiment includes a dust washing unit 30 for removing dust from the gas, a drying unit 60 for removing moisture from the gas, a monitoring unit 70 for monitoring the oxygen concentration in the gas, and a one-way valve 80, which are connected in sequence. The gas to be tested first passes through the dust washing unit 30 to remove dust from the gas, and then passes through the drying unit 60 to remove moisture from the gas. After treatment, the gas to be tested is free of dust, which can prevent dust from adhering to the oxygen monitoring sensor, thereby accurately measuring the oxygen concentration.

[0020] The dust washing unit 30 is connected to the gas outlet 13 of the crusher 10 through the high-pressure pump 20 and the conduit 40. The high-pressure pump 20 draws the gas to be tested into the conduit 40 and into the interior of the gas cleaning device. The one-way valve 80 is connected to the second air inlet 12 of the crusher 10 through the conduit 40. The one-way valve 80 can be a one-way solenoid valve to prevent the gas from flowing in the opposite direction and prevent the gas to be tested from directly entering the gas cleaning device from the second air inlet 12, resulting in monitoring failure. The crusher 10 is also provided with a first air inlet 11 for introducing nitrogen. The gas after testing will be re-introduced into the crusher 10, and the gas cleaning device and the crusher 10 form a sealed circuit to avoid gas waste. The high-pressure pump 20, the monitoring unit 70, and the one-way valve 80 are all electrically connected to the controller.

[0021] In one embodiment of the present invention, the dust-washing unit 30 comprises a sealed housing containing dust-washing water. A conduit 40 is sealedly connected to the inlet and outlet of the housing. The inlet conduit 40 extends into the dust-washing water, while the outlet conduit 40 is located above the surface of the water. Nitrogen and oxygen are both insoluble in water. After being pumped into the water by a high-pressure pump, their low density causes them to automatically rise to the top of the housing and be discharged through the conduit 40, leaving the dust inside.

[0022] The drying unit 60 includes drying particles 61, which are located inside a sealed bottle body. A conduit 40 is sealed and connected to the inlet and outlet of the bottle body respectively. The inlet conduit 40 is connected to the dust washing unit 30, and the outlet conduit 40 is connected to the one-way valve 80. The drying particles 41 can absorb moisture in the gas to be tested. The drying particles 41 can be activated carbon, silica gel or aluminum oxide, all of which have high hygroscopic properties and will not chemically react with nitrogen and oxygen. The monitoring unit 70 includes an oxygen monitoring sensor, which is installed inside the bottle body near the outlet. The oxygen monitoring sensor can be a zirconium oxide detector probe, which can transmit monitoring signal data to the controller. If the oxygen content is higher than the set value, the crusher 10 is controlled to stop.

[0023] As an embodiment of the present invention, a condensing unit 50 can also be provided between the dust washing unit 30 and the drying unit 60. The cooling medium in the condensing unit 50 exchanges heat with the gas to be tested, the gas to be tested is cooled, and the water carried in the gas is liquefied and separated. The gas to be tested after dehydration enters the drying unit 60. The condensing unit 50 includes a gas inlet 51 and a gas outlet 55. The gas inlet 51 is connected to the dust washing unit 30 through the conduit 40, and the gas outlet 55 is connected to the drying unit 60. The provision of the condensing unit 50 can pre-treat the gas, remove most of the water vapor in the gas by condensation, and then the drying unit 60 removes any residual water vapor, which greatly reduces the replacement frequency of the drying particles in the drying unit 60.

[0024] Specifically, the condensing unit 50 may be a shell-and-tube heat exchanger, which includes a shell and heat exchange tubes inside the shell, such as Figure 2 As shown, both the gas inlet 51 and the gas outlet 55 are provided on the outer wall of the housing. The outer wall of the housing also includes a cooling medium inlet 52, a condensed water outlet 53, and a cooling medium outlet 54. The gas inlet 51, gas outlet 55, and condensed water outlet 53 communicate with the interior of the housing; the cooling medium inlet 52 and cooling medium outlet 54 communicate with the heat exchange pipes. A drain valve 56 electrically connected to the controller is provided at the condensed water outlet 53, and the controller controls the discharge of the condensed water by controlling the drain valve 56.

[0025] The gas to be tested that enters the condensing unit 50 goes through the shell side, enters the shell from the gas inlet 51, and is discharged from the gas outlet 55. The cooling medium goes through the tube side, enters from the cooling medium inlet 52, passes through the tube of the heat exchange tube, and is discharged from the cooling medium outlet 54. During the cooling process, the water vapor in the gas will condense into liquid water and remain inside the shell. The condensed water can be discharged from the condensed water outlet 53, and its drainage speed is controlled by the drain valve 56. The drain valve 56 can adopt a vacuum solenoid valve, and its model can be AirTac vacuum solenoid 3V2MNCF1F, to ensure that the condensed water can be effectively discharged without introducing air. The controller electrically connected to the drain valve 56 can be an industrial controller with a PLC component.

[0026] In summary, this solution samples the gas from the crusher and draws it into a gas cleaning device, where the gas to be tested is subjected to dust washing and drying treatments in sequence to prevent dust and moisture from affecting the monitoring accuracy.

Claims

1. A gas cleaning device for a crusher, characterized in that: It comprises a dust washing unit (30) for removing dust from the gas, a drying unit (60) for removing moisture from the gas, a monitoring unit (70) for monitoring the oxygen concentration in the gas, and a one-way valve (80) which are connected in sequence; The dust washing unit (30) is connected to the air outlet (13) of the crusher (10) via the high-pressure pump (20) and the conduit (40); the one-way valve (80) is connected to the second air inlet (12) of the crusher (10) via the conduit (40); and the high-pressure pump (20), the monitoring unit (70) and the one-way valve (80) are all electrically connected to a controller.

2. The gas cleaning device for a crusher according to claim 1, characterized in that: The dust washing unit (30) comprises a sealed box body, the interior of which is filled with dust washing water; a conduit (40) is sealedly connected to the inlet and outlet of the box body respectively, the conduit (40) at the inlet extends into the dust washing water; the conduit (40) at the outlet is located above the surface of the dust washing water.

3. The gas cleaning device for a crusher according to claim 1, characterized in that: The drying unit (60) comprises drying particles (61), the drying particles (61) are located inside a sealed bottle body, and a conduit (40) is sealedly connected to the inlet and outlet of the bottle body respectively, the inlet conduit (40) is communicated with the dust washing unit (30), and the outlet conduit (40) is connected to the one-way valve (80).

4. The gas cleaning device for a crusher according to claim 3, characterized in that: The monitoring unit (70) comprises an oxygen monitoring sensor which is installed inside the bottle body near the outlet.

5. The gas cleaning device for a crusher according to claim 1, characterized in that: A condensing unit (50) is connected between the dust washing unit (30) and the drying unit (60); the condensing unit (50) comprises a gas inlet (51) and a gas outlet (55); the gas inlet (51) is connected to the dust washing unit (30) via a conduit (40); and the gas outlet (55) is connected to the drying unit (60).

6. The gas cleaning device for a crusher according to claim 5, characterized in that: The condensing unit (50) is a shell-and-tube heat exchanger, which comprises a shell and heat exchange tubes inside the shell; the gas inlet (51) and the gas outlet (55) are both opened on the outer wall of the shell, and the outer wall of the shell is also provided with a cooling medium inlet (52), a condensed water outlet (53) and a cooling medium outlet (54); The gas inlet (51), the gas outlet (55) and the condensed water outlet (53) are in communication with the interior of the shell; the cooling medium inlet (52) and the cooling medium outlet (54) are in communication with the heat exchange tube.

7. The gas cleaning device for a crusher according to claim 6, characterized in that: The condensate outlet (53) is provided with a drain valve (56) electrically connected to the controller.

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