Chemical raw material premixing and weighing device

Abstract

The utility model belongs to the technical field of chemical raw materials, in particular to a chemical raw material premixing and weighing device, which is characterized in that the lower end of a raw material tank is communicated with a conveying pipe, the tail end of the conveying pipe is fixedly connected with a mixing tank, and the bottom of the conveying pipe is fixedly connected with a raw material pump; the raw material pump pumps raw materials in the raw material tank into the mixing tank through the conveying pipe; according to the chemical raw material premixing and weighing device, by arranging the mixing tank, raw materials in different raw material tanks are directly pumped into the mixing tank through the conveying pipeline and the raw material pump to be premixed, the requirement for equipment precision is reduced, the production volume is increased, and the production cost is reduced; the raw material solution pumped into the mixing tank is weighed and proportioned by arranging the mixing and weighing mechanism, so that the proportioning process is easier to control, the precision is higher, and the mixed solution is easier to meet the process requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical raw materials, in particular to a pre-mixing and weighing device for chemical raw materials. Background Art

[0002] In the process of mixing and processing chemical raw materials, an on-line mixing device is generally adopted, which directly extracts from the raw material tanks containing different chemical raw materials, and controls the flow rate through the flow meter installed on the pipeline, and directly mixes by counter-flow in the pipeline and then transports it out;

[0003] In the prior art, although the mixing and processing of chemical raw materials can be carried out, there are still the following deficiencies:

[0004] However, the requirements for equipment and accuracy are relatively high. It is necessary to control the flow meter through a program to control the flow rate, which increases the production cost and reduces the production volume;

[0005] There is an error in the mixing ratio. In the prior art, a program is used to control the counter-flow mixing of different raw material liquids in the pipeline. As the processing time is longer, the accuracy error is larger, and the larger the mixing error, the easier it is for the prepared mixed solution to not meet the process requirements. Content of the Utility Model

[0006] Based on the existing technical problems in the mixing and processing of chemical raw materials, the utility model proposes a pre-mixing and weighing device for chemical raw materials.

[0007] A pre-mixing and weighing device for chemical raw materials proposed by the utility model includes a raw material tank. The lower end of the raw material tank is connected with a conveying pipe. The end of the conveying pipe is fixedly connected with a mixing tank. The bottom of the conveying pipe is fixedly connected with a raw material pump. The raw material pump pumps the raw materials in the raw material tank into the mixing tank through the conveying pipe;

[0008] One side of the mixing tank is provided with a mixing pump. The inlet and outlet of the mixing pump are respectively connected with the bottom end and the top end of the mixing tank through the conveying pipe. The mixing pump pumps the mixed solution at the bottom of the mixing tank out through the conveying pipe and transports it to the top of the mixing tank.

[0009] Preferably, electromagnetic valves are fixedly connected to the inlet and outlet of the raw material pump, and the electromagnetic valves are linked with the raw material pump.

[0010] Through the above technical solution, when the raw material pump is started, the electromagnetic valve linked with the raw material pump is opened simultaneously, and the raw material pump pumps the raw materials in the raw material tank into the mixing tank for pre-mixing.

[0011] Preferably, a standby mixing pump is provided on one side of the mixing pump. The inlet and outlet of the standby mixing pump are respectively communicated with the inlet and outlet pipelines of the mixing pump through the conveying pipeline. When the mixing pump fails, the standby mixing pump replaces the mixing pump to work.

[0012] Through the above technical solution, when the mixing pump fails, it stops working, and the solenoid valves at the inlet and outlet of the mixing pump automatically close and stop operating. At this time, the standby mixing pump is started, and the solenoid valve on the conveying pipeline connecting the standby mixing pump and the mixing pump is opened, and the pre-mixed solution continues to mix through the standby mixing pump.

[0013] Preferably, a hydraulic pressure gauge and a flow meter are respectively communicated on both sides of the conveying pipeline at the outlet of the mixing pump. When there is pre-mixed solution flowing in the conveying pipeline, part of the raw material mixed solution is respectively communicated with the hydraulic pressure gauge and the flow meter through the conveying pipelines on both sides.

[0014] Through the above technical solution, the hydraulic pressure gauge and the flow meter monitor the mixing state of the pre-mixed solution in the pipeline.

[0015] Preferably, a weighing mechanism is provided on the outer surface of the bottom of the mixing tank. The weighing mechanism includes a load-bearing frame, and an electronic weighing device is fixedly connected to the bottom of the supporting feet of the load-bearing frame.

[0016] Through the above technical solution, when the raw material pump pumps the raw material solution in the raw material tank into the mixing tank, the weight of the raw material solution is weighed by the electronic weighing device, and the mixing solution is proportioned according to the weight of the raw material solution.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. By providing a mixing tank, the raw materials in different raw material tanks are directly pumped into the mixing tank through the conveying pipeline and the raw material pump for pre-mixing, which reduces the requirements for equipment accuracy, increases the production volume, and reduces the production cost.

[0019] 2. By providing a mixing and weighing mechanism to weigh and proportion the raw material solution pumped into the mixing tank, the proportioning process is easier to control, with higher accuracy, and the mixed solution is easier to meet the process requirements. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of a chemical raw material pre-mixing and weighing device proposed by the present utility model;

[0021] Figure 2 It is a schematic diagram of the connection mechanism between the raw material tank and the mixing tank of a chemical raw material pre-mixing and weighing device proposed by the present utility model;

[0022] Figure 3 It is a schematic diagram of the mixing mechanism of a chemical raw material pre-mixing and weighing device proposed by the present utility model

[0023] Figure 4 Schematic diagram of the weighing mechanism of a chemical raw material premixing and weighing device proposed by the present utility model;

[0024] Figure 5 Schematic diagram of the solenoid valve connection mechanism of a chemical raw material premixing and weighing device proposed by the present utility model.

[0025] In the figure: 1, raw material tank; 2, conveying pipe; 3, mixing tank; 4, raw material pump; 5, mixing pump; 6, solenoid valve; 7, standby mixing pump; 8, hydraulic pressure gauge; 9, flow meter; 10, load-bearing frame; 11, electronic weighing scale. Specific implementation mode

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0027] Refer to Figures 1-5 , a chemical raw material premixing and weighing device, including a raw material tank 1, the lower end of the raw material tank 1 is communicated with a conveying pipe 2, the end of the conveying pipe 2 is fixedly connected with a mixing tank 3, the bottom of the conveying pipe 2 is fixedly connected with a raw material pump 4, the inlet and outlet of the raw material pump 4 are fixedly connected with a solenoid valve 6, the solenoid valve 6 and the raw material pump 4 perform linkage actions. When the raw material pump 4 is started, the solenoid valve 6 is opened simultaneously. The raw material pump 4 pumps the raw materials in the raw material tank 1 into the mixing tank 3 through the conveying pipe 2 for premixing. The overall mechanism reduces the requirements for equipment accuracy, increases the production volume, and reduces the production cost.

[0028] The inlet and outlet of the mixing pump 5 are fixedly connected to the conveying pipe 2 through a solenoid valve 6 and are respectively connected to the bottom end and the top end of the mixing tank 3 in a through manner. On both sides of the conveying pipe 2 at the outlet of the mixing pump 5, a hydraulic pressure gauge 8 and a flow meter 9 are respectively communicated. The solenoid valve 6 is arranged to control the conveying pipe 2 of the hydraulic pressure gauge 8 and the flow meter 9. When the raw material solution passes through the conveying pipe 2 of the hydraulic pressure gauge 8 and the flow meter 9, the solenoid valve 6 is opened. The hydraulic pressure gauge 8 and the flow meter 9 monitor the pressure and flow rate in the conveying pipe 2 to prevent the raw material solution in the conveying pipe 2 from having too high pressure and flow rate, causing a load on the conveying pipe and affecting the circulating mixing action of the raw material melt solution.

[0029] In order to complete the mixing action, the mixing pump 5 pumps the mixed solution at the bottom of the mixing tank 3 through the conveying pipe 2 and sends it to the top of the mixing tank 3 for circulating mixing action. Solenoid valves 6 are arranged between the inlet and outlet of the mixing pump 5 and the conveying pipe 2 between the mixing tanks 3. The conveying pipe 2 is communicated. The mixing pump 5 pumps the melt solution at the bottom of the mixing tank 3 into the top of the mixing tank 3 for circulating mixing action.

[0030] Furthermore, a spare mixing pump 7 is provided on one side of the mixing pump 5. The inlet and outlet of the spare mixing pump 7 are respectively communicated with the inlet and outlet of the mixing pump 5 through the conveying pipe 2. The inlets and outlets between the spare mixing pump 7 and the mixing pump 5 are both connected through the conveying pipe 2, and solenoid valves 6 are provided at the connection points for control. When the mixing pump 5 fails, components are replaced and it stops working. The solenoid valves 6 at the inlets and outlets of the mixing pump 5 automatically close and stop operating. At this time, the spare mixing pump 7 is started, and the solenoid valve 6 on the conveying pipe 2 connecting the spare mixing pump 7 and the mixing pump 5 is opened, and the premixed solution continues to be mixed by the spare mixing pump 7.

[0031] Furthermore, a weighing mechanism is provided on the outer surface of the bottom of the mixing tank 3. The weighing mechanism includes a load-bearing frame 10, and an electronic weighing scale 11 is fixedly connected to the bottom of the support feet of the load-bearing frame 10.

[0032] When the raw material pump 4 pumps the raw material solution in the raw material tank 1 into the mixing tank 3, the weight of the raw material solution is weighed by the electronic weighing scale 11. According to different weight requirements of the raw material solution, the ratio of the mixed solution is adjusted, making the ratio process of the raw material solution easier to control, with higher precision, and the mixed solution is more likely to meet the process requirements.

[0033] Working principle: When chemical raw materials are mixed, first, the raw materials in different raw material tanks 1 are pumped into the mixing tank 3 by the raw material pump 4. A weighing mechanism is provided at the bottom of the mixing tank 3 to weigh and proportion the raw material solution entering the mixing tank 3. Then, the raw material solution in the mixing tank 3 is connected through the conveying pipe 2 by the mixing pump 5 and pumped from the bottom of the mixing tank 3 to the top of the mixing tank 3 for cyclic mixing operation. The pressure and flow rate of the raw material solution in the conveying pipe 2 are monitored by the hydraulic pressure gauge 8 and the flow meter 9 to prevent the excessive pressure and flow rate of the raw material solution in the conveying pipe 2 from causing a load on the conveying pipe and affecting the cyclic mixing operation of the raw material solution. Solenoid valves 6 are provided between the conveying pipe 2, the mixing pump 5, and the raw material pump 1 to control the operation of the raw material solution in the pipeline. At the same time, a spare mixing pump 7 is also provided. When the mixing pump 5 needs to be repaired and components are replaced, the spare mixing pump 7 can be used to replace the mixing pump 5 for work when a failure occurs.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A chemical raw material premixing weighing device, comprising a raw material tank (1), characterized in that: The lower end of the raw material tank (1) is connected to a delivery pipe (2), the end of the delivery pipe (2) is fixedly connected to a mixing tank (3), the bottom of the delivery pipe (2) is fixedly connected to a raw material pump (4), and the raw material pump (4) pumps the raw material in the raw material tank (1) into the mixing tank (3) through the delivery pipe (2); The inlet and outlet of the mixing pump (5) are respectively connected to the bottom and top of the mixing tank (3) through the delivery pipe (2), and the mixing pump (5) extracts the mixed solution at the bottom of the mixing tank (3) through the delivery pipe (2) and delivers it to the top of the mixing tank (3).

2. A chemical raw material premix weighing device according to claim 1, characterized in that: The inlet and outlet of the raw material pump (4) are fixedly connected to a solenoid valve (6), and the solenoid valve (6) and the raw material pump (4) are linked to each other.

3. A chemical raw material premix weighing device according to claim 1, characterized in that: A backup mixing pump (7) is provided on one side of the mixing pump (5); the inlet and outlet of the backup mixing pump (7) are respectively connected to the inlet and outlet delivery pipes (2) of the mixing pump (5) through the delivery pipe (2); when the mixing pump (5) fails, the backup mixing pump (7) replaces the mixing pump (5) to work.

4. A chemical raw material premix weighing device according to claim 3, characterized in that: Both sides of the delivery pipe (2) at the outlet of the mixing pump (5) are respectively connected to a hydraulic gauge (8) and a flow meter (9).

5. A chemical raw material premix weighing device according to claim 1, characterized in that: A weighing mechanism is provided on the outer surface of the bottom of the mixing tank (3), the weighing mechanism comprising a load-bearing frame (10), and an electronic weighing device (11) is fixedly connected to the bottom of the supporting foot of the load-bearing frame (10).

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