Safety interlocking device for manual cleaning machine

Abstract

The utility model provides a safety interlocking device for a manual cleaning machine, and aims to solve the technical problem that toxic smoke generated in the pickling process diffuses in a workshop when air draft of the conventional manual cleaning machine is stopped or reduced. The safety interlocking device comprises a main groove, an auxiliary groove, an exhaust module and a safety interlocking module. The main tank is used for acid pickling of broken silicon materials and is arranged in the manual cleaning machine. The auxiliary tank is connected with the main tank through a pump. The exhaust module is installed on the manual cleaning machine. The safety interlocking module comprises an air pressure detection meter which is installed on the air exhaust module and used for detecting the air pressure of the air exhaust module. When air draft of the manual cleaning machine breaks down, the acid liquor in the main tank is pumped into the auxiliary tank by starting the pump, and the situation that the broken silicon materials in the main tank react with the acid liquor to continuously generate toxic smoke to pollute a workshop is prevented.

Description

Technical Field

[0001] The present application relates to a safety interlocking device, and in particular to a safety interlocking device for a manual cleaning machine. Background Art

[0002] Manual cleaning machines often produce a large amount of yellow toxic smoke containing nitrogen oxides when pickling crushed silicon materials. If the above-mentioned toxic smoke is not discharged in time, it will cause pollution to the workshop, thereby posing a safety hazard to the operator. The prior art generally installs an exhaust device on the manual cleaning machine, and discharges the toxic smoke in the manual cleaning machine through the exhaust device. However, the exhaust device is prone to reduced exhaust volume or cessation of exhaust due to long-term operation or power outages in the workshop. At this time, as the acid in the manual cleaning machine reacts with the silicon material, toxic smoke continues to be produced. These toxic fumes gradually spread to the entire manual cleaning workshop because they cannot be discharged through the exhaust device in time. Utility Model Content

[0003] The present application aims to provide a safety interlocking device for a manual cleaning machine. When the exhaust of the manual cleaning machine fails, the acid liquid in the main tank is pumped into the auxiliary tank by starting the pump to prevent the broken silicon material in the main tank from reacting with the acid liquid to continue to produce toxic smoke to pollute the workshop.

[0004] The technical solutions provided by this application are as follows:

[0005] A safety interlocking device for a manual cleaning machine, comprising:

[0006] A main tank is used for pickling of broken silicon materials and is arranged in a manual cleaning machine; a secondary tank is connected to the main tank through a pump; an exhaust module is installed in the manual cleaning machine; a safety interlocking module includes an air pressure detection gauge, which is installed in the exhaust module and is used to detect the air pressure of the exhaust module.

[0007] Furthermore, the auxiliary tank is arranged outside the manual cleaning machine.

[0008] Furthermore, the safety interlocking module also includes a PLC logic controller installed in the exhaust duct; the input end of the PLC logic controller is electrically connected to the wind pressure detection meter, and the output end is electrically connected to the pump for controlling the pump to be turned on or off.

[0009] Furthermore, the exhaust module includes an exhaust fan and an exhaust duct; the exhaust fan is installed above the main tank and is arranged in the manual cleaning machine; the exhaust duct is arranged at the top of the manual cleaning machine; the wind pressure detection gauge is installed at the exhaust duct.

[0010] Furthermore, the exhaust duct is opened at the top of the manual cleaning machine.

[0011] Furthermore, the wind pressure detection gauge has a set pressure value, and when the detection value of the wind pressure detection gauge is less than the set pressure value, the PLC logic controller controls the pump to turn on.

[0012] Furthermore, the safety interlocking module also includes a power supply, which is electrically connected to the wind pressure detection meter, the PLC logic controller and the pump respectively.

[0013] Furthermore, the power supply is a UPS uninterruptible power supply.

[0014] Furthermore, a drainage channel is provided on the side wall of the auxiliary groove.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] When the exhaust module of the manual cleaning machine fails, the wind pressure detection meter detects the change in the air pressure signal and controls the pump to start through the PLC logic controller to quickly pump the acid in the main tank into the auxiliary tank, preventing the toxic smoke generated by the broken silicon material and the acid in the main tank from spreading to the workshop and causing harm to the operating staff. At the same time, the acid pumped to the auxiliary tank can continue to be used, which improves the utilization rate of the acid.

[0017] By adding an additional power supply to the wind pressure detection meter, PLC logic controller and pump, it is ensured that in the event of a power outage in the manual cleaning machine, the pump can still pump the acid in the main tank into the secondary tank in time to eliminate safety hazards in the workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a cross-sectional schematic diagram of a safety interlocking device for a manual cleaning machine in operation according to this embodiment;

[0020] Figure 2 This is a principle block diagram of a safety interlock device for a manual cleaning machine according to this embodiment.

[0021] Reference numerals:

[0022] 1. Main tank; 20. Auxiliary tank; 21. Drainage channel; 3. Pump; 41. Exhaust duct; 42. Exhaust fan; 5. Wind pressure detection gauge. DETAILED DESCRIPTION

[0023] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0024] In the description of the present invention, it should be understood that the terms "upper", "top", "inner", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are usually placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0027] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0028] The utility model embodiment provides a safety interlocking device for a manual cleaning machine, such as Figure 1As shown. The safety interlocking device for the manual cleaning machine includes a main tank 1, a sub-tank 20, an exhaust module and a safety interlocking module. The exhaust module is installed on the manual cleaning machine and is used to discharge toxic smoke gas from the main tank 1. The main tank 1 and the sub-tank 20 are connected by a pump 3. When the safety interlocking module detects that there is an abnormality in the pressure of the exhaust module, the pump 3 is controlled to start and extract the acid liquid in the main tank 1 into the sub-tank 20, so as to avoid the phenomenon that a large amount of smoke in the main tank 1 is not discharged in time and spreads to the workshop.

[0029] The main tank 1 is used for pickling of broken silicon materials and is arranged in the manual cleaning machine. When the main tank 1 is used to clean the silicon materials, a large amount of yellow toxic smoke containing nitrogen oxides will be generated in the tank.

[0030] The auxiliary tank 20 is connected to the main tank 1 through the pump 3. The auxiliary tank 20 is arranged outside the manual cleaning machine. The pump 3 can quickly pump the acid liquid in the main tank 1 to the auxiliary tank 20 according to the process requirements. The side wall of the auxiliary tank 20 is provided with a drainage channel 21. The acid liquid in the auxiliary tank 20 can be discharged through the drainage channel 21 and transferred to the main tank 1 again, thereby improving the utilization rate of the acid liquid. Among them, the way of transferring the acid liquid from the auxiliary tank 20 to the main tank 1 is not limited: the acid liquid can be extracted by an extraction pump, or the acid liquid can be discharged to a liquid storage tank through the drainage channel 21, and then the liquid stored in the liquid storage tank is poured into the main tank 1, etc.

[0031] The exhaust module includes an exhaust fan 42 and an exhaust pipe 41. The exhaust fan 42 is arranged above the main tank 1. The exhaust fan 42 is installed near the top of the manual cleaning machine. The exhaust pipe 41 is arranged at the top of the manual cleaning machine. The exhaust fan 42 exhausts the toxic smoke in the manual cleaning machine to the exhaust pipe 41 by exhausting air.

[0032] Safety interlock modules, such as Figure 1 or Figure 2 As shown, it includes a wind pressure detection meter 5, a PLC logic controller and a UPS uninterruptible power supply. The PLC logic controller receives the signal fed back by the wind pressure detection meter 5. When the signal is a signal that the wind pressure detection meter 5 detects that the pressure of the exhaust pipe 41 is less than the set pressure value of the wind pressure detection meter 5, the PLC logic controller controls the pump 3 to open, and the acid solution in the main tank 1 is extracted into the auxiliary tank 20 in time.

[0033] The wind pressure detection meter 5 is installed on the exhaust pipe 41. The wind pressure detection meter 5 has a set pressure value and is used to detect the change of the air pressure signal of the exhaust pipe 41.

[0034] The PLC logic controller is installed in the exhaust pipe 41. The input end of the PLC logic controller is electrically connected to the output end of the above-mentioned wind pressure detection meter 5, and the output end of the PLC logic controller is electrically connected to the pump 3. When the wind pressure detection meter 5 detects that the pressure of the exhaust pipe 41 is less than the above-mentioned set pressure value, it is determined that the exhaust module is abnormal.

[0035] When the wind pressure detection meter 5 detects that the pressure of the exhaust pipe 41 is less than the above-mentioned set pressure value, that is, when the exhaust module cannot work normally, the pump 3 is started by the PLC logic controller to quickly pump the acid in the main tank 1 into the auxiliary tank 20. This prevents the toxic smoke generated by the broken silicon material and the acid in the manual cleaning machine from spreading to the workshop due to failure to be discharged in time. At the same time, the acid extracted from the main tank 1 to the auxiliary tank 20 can continue to be used, thereby improving the utilization rate of the acid.

[0036] The power supply is electrically connected to the wind pressure detection meter 5, the PLC logic controller and the pump 3 respectively. When the manual cleaning machine cannot normally discharge the toxic smoke therein due to a power outage, the power supply can continue to supply electricity to the wind pressure detection meter 5, the PLC logic controller and the pump 3. This ensures that when the manual cleaning machine is powered off, the wind pressure detection meter 5 can still detect the air pressure signal of the exhaust duct 41 and transmit the air pressure signal to the PLC logic controller. Subsequently, the start of the pump 3 is controlled by the PLC logic controller, so that the pump 3 can still pump the acid in the main tank 1 into the auxiliary tank 20 in time, eliminating the safety hazards in the workshop. The power supply can be a UPS uninterruptible power supply.

[0037] The specific working mode of the utility model is as follows:

[0038] When the wind pressure detection meter 5 detects that the pressure of the exhaust pipe 41 is equal to or greater than the above-mentioned set pressure value, the manual cleaning device exhausts the toxic smoke generated by the main tank 1 to the exhaust pipe 41 through the exhaust fan 42;

[0039] When the wind pressure detection meter 5 detects that the pressure of the exhaust pipe 41 is lower than the above-mentioned set pressure value, the wind pressure detection meter 5 detects the change of the air pressure signal and controls the pump 3 to start through the PLC logic controller to quickly pump the acid liquid in the main tank 1 into the auxiliary tank 20.

[0040] Based on the above embodiments, the utility model has the following advantages:

[0041] (1) When the exhaust module of the manual cleaning machine fails, the wind pressure detection meter 5 detects the change in the air pressure signal and controls the pump 3 to start through the PLC logic controller, so as to quickly pump the acid in the main tank 1 into the auxiliary tank 20, thereby preventing the toxic smoke generated by the broken silicon material and the acid in the main tank 1 from being discharged in time and spreading to the workshop, causing harm to the operating staff; at the same time, the acid pumped to the auxiliary tank 20 by the pump 3 can continue to be used, thereby improving the utilization rate of the acid.

[0042] (2) By providing an additional power supply to the wind pressure detection meter 5, the PLC logic controller and the pump 3, it is ensured that in the event of a power outage in the manual cleaning machine, the pump 3 can still pump the acid in the main tank 1 into the auxiliary tank 20 in a timely manner, thereby eliminating safety hazards in the workshop.

Claims

1. A safety interlocking device for a manual cleaning machine, characterized in that: The safety interlocking device for the manual cleaning machine comprises: A main tank is used for pickling of broken silicon materials and is arranged in a manual cleaning machine; a secondary tank is connected to the main tank through a pump; an exhaust module is installed in the manual cleaning machine; a safety interlocking module includes an air pressure detection gauge, which is installed in the exhaust module and is used to detect the air pressure of the exhaust module.

2. The safety interlocking device for a manual cleaning machine according to claim 1, characterized in that: The auxiliary tank is arranged outside the manual cleaning machine.

3. The safety interlocking device for a manual cleaning machine according to any one of claims 1 or 2, characterized in that: The safety interlocking module also includes a PLC logic controller; the PLC logic controller is installed in the exhaust duct; the input end of the PLC logic controller is electrically connected to the wind pressure detection meter, and its output end is electrically connected to the pump for controlling the pump to be turned on or off.

4. The safety interlocking device for a manual cleaning machine according to claim 3, characterized in that: The exhaust module includes an exhaust fan and an exhaust duct; the exhaust fan is installed above the main tank and is arranged in the manual cleaning machine; the exhaust duct is arranged on the top of the manual cleaning machine; the wind pressure detection meter is installed on the exhaust duct.

5. The safety interlocking device for a manual cleaning machine according to claim 4, characterized in that: The exhaust duct is opened on the top of the manual cleaning machine.

6. The safety interlocking device for a manual cleaning machine according to claim 4, characterized in that: The wind pressure detection gauge has a set pressure value. When the detection value of the wind pressure detection gauge is less than the set pressure value, the PLC logic controller controls the pump to turn on.

7. The safety interlocking device for a manual cleaning machine according to any one of claims 4 to 6, characterized in that: The safety interlocking module also includes a power supply, which is electrically connected to the wind pressure detection meter, the PLC logic controller and the pump respectively.

8. The safety interlocking device for a manual cleaning machine according to claim 7, characterized in that: The power supply is a UPS uninterruptible power supply.

9. The safety interlocking device for a manual cleaning machine according to any one of claims 1 or 2 or claims 4 to 6 or claim 8, characterized in that: The side wall of the auxiliary groove is provided with a drainage channel.

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