A concentrated dosing device for a rinsing tank

Abstract

The utility model discloses a kind of concentrated dosing devices of washing light tank, including storage unit, conveying unit and distribution unit;The storage unit includes at least one storage barrel, and storage barrel top is equipped with medicine inlet, bottom is connected conveying unit;The conveying unit includes dosing metering pump, dosing metering pump input end is communicated with storage barrel, and output end is connected distribution unit by pipeline;The distribution unit includes dosing main pipe and multiple dosing branch pipes, each dosing branch pipe is connected with the dosing port of corresponding washing light tank, and control valve is equipped on each dosing branch pipe.The utility model stores medicine water using large-capacity storage barrel, dosing metering pump can extract medicine water from storage barrel, then shunt to each washing light tank through multiple dosing branch pipes, automatically complete dosing, save a lot of manpower time.Meanwhile, washing light equipment can normally run during dosing process, completely eliminate the shutdown loss caused by dosing.

Description

Technical Field

[0001] This utility model relates to the field of fastener processing, and in particular to a centralized chemical dosing device for a washing tank. Background Technology

[0002] Screw cleaning and polishing is a process that uses chemical or physical methods to remove impurities such as oil and oxide layers from the surface of screws, achieving a bright finish. This process directly affects the appearance quality and corrosion resistance of the screws and requires strict adherence to process specifications. Currently, the chemical dosing method in most cleaning and polishing processes involves manually carrying small buckets of chemicals to the cleaning line and pouring them into the cleaning tank one bucket at a time. This method has several drawbacks: adding chemicals takes one hour per shift, during which the cleaning and polishing equipment must be stopped, severely impacting production efficiency; manual handling is labor-intensive, and chemicals are prone to spillage, causing waste and safety hazards; the amount of chemicals added depends on manual experience, making it difficult to ensure consistent chemical concentrations in each cleaning tank, affecting the cleaning and polishing quality. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a centralized dosing device for a washing tank, enabling automated, quantitative, and non-stop dosing.

[0004] Therefore, the technical solution of this utility model is: a centralized dosing device for a polishing tank, comprising a storage unit, a conveying unit, and a distribution unit; the storage unit includes at least one storage tank, with a dosing inlet at the top and a conveying unit at the bottom; the conveying unit includes a dosing metering pump, the input end of which is connected to the storage tank, and the output end of which is connected to the distribution unit via a pipeline; the distribution unit includes a main dosing pipe and multiple branch dosing pipes, one end of which is connected to the dosing metering pump, and the other end of which is connected to the multiple branch dosing pipes, each branch dosing pipe being connected to the dosing port of the corresponding polishing tank, and each branch dosing pipe being equipped with a control valve.

[0005] Based on the above scheme and as a preferred embodiment of the above scheme: it also includes a control unit, which includes a PLC controller and a touch screen, and the control valve on the dosing branch pipe is an electromagnetic control valve; the PLC controller controls the operation of the dosing metering pump and the electromagnetic control valve.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the dosing pipe is equipped with a flow sensor and a one-way valve at the dosing port near the washing tank, and the flow sensor monitors the amount of reagent replenished to the washing tank in real time.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the medicine storage tank is equipped with a liquid level sensor, and the liquid level sensor is connected to an audible and visual alarm.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: a filter unit is provided at the connection between the dosing metering pump and the storage tank.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. Utilizing a large-capacity storage tank to store the chemicals, the metering pump draws chemicals from the tank and distributes them to each washing tank via multiple dosing pipes, automatically completing the dosing process without manual intervention, saving significant manpower and time. Simultaneously, independent dosing pipes connect each washing tank, allowing the washing equipment to operate normally during dosing, completely eliminating downtime losses caused by chemical dosing.

[0011] 2. The drug storage unit uses a large-capacity drug storage tank to reduce the frequency of manual handling and reduce direct contact between personnel and drugs. The conveying and distribution units convey drugs through closed pipelines, and with the help of one-way valves and other components, drug spillage is prevented, safety risks are reduced, and drug waste is reduced.

[0012] 3. The dosing metering pump can accurately control the amount of chemicals delivered. Multiple dosing pipes, in conjunction with control valves, can distribute a fixed amount of chemicals to each cleaning tank and can centrally dosing chemicals to an unspecified number of cleaning tanks. The flow sensors of the dosing pipes monitor the replenishment amount in real time, and the data is fed back to the control unit for timely adjustment, ensuring that the chemical concentration in each cleaning tank is consistent, thereby improving the appearance quality and corrosion resistance stability of the screws.

[0013] 4. The liquid level sensor inside the storage tank is connected to an audible and visual alarm, which promptly reminds you to replenish the drug when it is insufficient, thus avoiding production disruptions due to drug shortages; the filter unit at the connection between the dosing pump and the storage tank can prevent impurities from entering the pump body and pipelines, extending the service life of the equipment and reducing maintenance costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the medicine storage tank of this utility model.

[0016] The following components are marked in the diagram: 1. Drug storage tank; 11. Drug inlet; 12. Liquid level sensor; 13. Sealing cover; 14. Stirring device; 2. Dosing metering pump; 3. Filter; 41. Dosing main pipe; 42. Dosing branch pipe; 43. Electromagnetic control valve; 44. Flow sensor; 45. Check valve; 5. Washing tank. Detailed Implementation

[0017] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0019] See the attached diagram. The centralized dosing device for the washing tank described in this embodiment includes a storage unit, a conveying unit, a distribution unit, and a control unit. The storage unit includes a large-capacity storage tank 1 with a dosing inlet 11 at the top and a conveying unit connected to the bottom. A level sensor 12 is installed inside the storage tank 1, and the level sensor 12 is connected to an audible and visual alarm. The level sensor can monitor both high and low levels. When the reagent is insufficient, a low level triggers a replenishment alarm, promptly reminding the user to replenish the reagent and preventing production disruptions due to reagent shortages. A high level prevents excessive reagent overflow.

[0020] A sealing cap 13 can be added to the inlet 11 of the storage tank 1 to prevent the evaporation of the medicine and the entry of impurities. Regarding the material selection for the storage tank 1, depending on the nature of the stored medicine, if it is a highly corrosive medicine, a material resistant to strong acids and alkalis, such as PE engineering plastic or 316 stainless steel, should be selected. Depending on the usage requirements, a conventional stirring device 14, such as a stirring paddle, can also be installed inside the storage tank 1, equipped with a motor drive, to ensure that the medicine inside the storage tank is always in a uniformly mixed state.

[0021] The delivery unit includes a metering pump 2, whose input end is connected to the storage tank 1, and whose output end is connected to the distribution unit via a pipeline. The metering pump 2 can precisely control the amount of chemicals delivered. A filter 3 can be added to the input end of the metering pump 2. The filter 3 can be a Y-type or bag filter with a PP material filter screen and a PVC shell to prevent impurities in the chemicals from entering the pump body, causing blockage or damage, and affecting metering accuracy and service life. Simultaneously, the filter should be designed with a detachable and washable structure for easy regular maintenance and to avoid flow attenuation due to filter screen blockage. Furthermore, the head of the metering pump needs to match the pipeline resistance of the subsequent distribution unit, especially when multiple branch lines are open simultaneously. It is necessary to ensure that the pump output pressure can meet the dosing requirements of the furthest washing tank. Therefore, a pressure sensor can be added to the delivery unit to monitor the pipeline pressure in real time and ensure metering accuracy.

[0022] The distribution unit includes a main dosing pipe 41 and multiple branch dosing pipes 42. One end of the main dosing pipe 41 is connected to the dosing metering pump 2, and the other end is connected to the multiple branch dosing pipes 42. Each branch dosing pipe 42 is connected to the dosing port of the corresponding washing tank 5, and each branch dosing pipe 42 is equipped with an electromagnetic control valve 43. Each branch dosing pipe 42 has a flow sensor 44 and a one-way valve 45 near the dosing port of the washing tank 5. The flow sensor 44 monitors the amount of chemicals supplied to the washing tank 5 in real time. This allows for real-time monitoring of the actual amount of chemicals added to each washing tank 5, and timely feedback to the PLC controller for adjustment when an abnormal dosing amount occurs.

[0023] When multiple branch lines are opened simultaneously, the flow distribution within the main pipe may become uneven due to differences in pipe length and diameter. Therefore, a pressure regulating valve can be added to the main dosing line, and the opening of the corresponding solenoid control valve can be dynamically adjusted via PLC using data from the flow sensors of each branch line to achieve precise flow distribution. Furthermore, the material of the solenoid control valve must be compatible with the chemical (e.g., 316 stainless steel valve body for corrosive chemicals) to prevent valve core corrosion and jamming caused by prolonged use.

[0024] In terms of control units, a PLC controller and touch screen are introduced to facilitate parameter setting and operation control, enabling automated control of the dosing metering pump and solenoid control valve. To enhance the system's intelligence, it can be connected to a host computer for remote monitoring and operation, allowing staff to manage the entire dosing system from the central control room.

[0025] During use, staff can select the washing tank number to be added on the touch screen (this can be one or more washing tanks). The PLC controller opens the corresponding solenoid control valve 43 of the washing tank, and then controls the amount of chemicals delivered by the dosing metering pump 2 according to the number of washing tanks. After the chemicals are sent into the main dosing pipe by the dosing metering pump, they flow into the washing tank through the corresponding dosing branch pipe. At the same time, the touch screen displays the data detected by the flow sensor 44 on the dosing branch pipe, which monitors the amount of chemicals replenished in the washing tank 5 in real time. This allows for automatic adjustment by the PLC or manual adjustment by the staff, ultimately ensuring that the amount of chemicals replenished in the washing tank meets the requirements.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A concentrated dosing device for a rinsing tank, characterized in that: The system includes a drug storage unit, a conveying unit, and a distribution unit. The drug storage unit includes at least one drug storage tank with a drug inlet at the top and a conveying unit at the bottom. The conveying unit includes a dosing metering pump with its input end connected to the drug storage tank and its output end connected to the distribution unit via a pipeline. The distribution unit includes a main dosing pipe and multiple branch dosing pipes. One end of the main dosing pipe is connected to the dosing metering pump, and the other end is connected to the multiple branch dosing pipes. Each branch dosing pipe is connected to the dosing port of the corresponding washing tank, and each branch dosing pipe is equipped with a control valve.

2. A concentrated dosing device for a rinsing tank as claimed in claim 1, characterized in that: It also includes a control unit, which includes a PLC controller and a touch screen. The control valve on the dosing branch pipe is an electromagnetic control valve. The PLC controller controls the operation of the dosing metering pump and the electromagnetic control valve.

3. A concentrated dosing device for a rinsing tank as claimed in claim 1, characterized in that: The dosing pipe is equipped with a flow sensor and a one-way valve at the dosing port near the washing tank. The flow sensor monitors the amount of chemicals supplied to the washing tank in real time.

4. A concentrated dosing device for a rinsing tank as claimed in claim 1, characterized in that: The medicine storage tank is equipped with a liquid level sensor, which is connected to an audible and visual alarm.

5. The centralized chemical dosing device for a washing tank as described in claim 1, characterized in that: A filter unit is installed at the connection point between the dosing metering pump and the drug storage tank.

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