Automatic cleaning device for a compounding kettle

Abstract

This utility model belongs to the field of chemical equipment cleaning technology, specifically an automatic cleaning device for preparation tanks. It includes two material tanks, spray tanks corresponding to each material tank, and multiple preparation tanks. The bottom outlet of each material tank selectively delivers material to the preparation tank or cleaning solvent to the corresponding spray tank via a first pipeline system. The top of each preparation tank has a spray nozzle, and the outlet of each spray tank selectively pumps cleaning solvent to the spray nozzle of any preparation tank via a second pipeline system. This application achieves parallel operation of material delivery and cleaning by setting up independent material tanks and spray tanks and using separate delivery routes. Simultaneously, it precisely adjusts the amount of cleaning solvent used and the spraying time through a magnetic pump and a pneumatic shut-off valve, thus improving cleaning efficiency and effectiveness.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment cleaning technology, specifically an automatic cleaning device for a mixing tank. Background Technology

[0002] In the chemical, pharmaceutical, and food industries, mixing tanks are core equipment used for material mixing, reaction, and synthesis processes. During production, to ensure product purity and prevent cross-contamination between different batches, the mixing tank must be thoroughly cleaned when changing products or batches.

[0003] Currently, the cleaning solvent used in the preparation vessel cleaning process also comes from the material tank. Because the flow meter on the material conveying pipeline needs to accurately measure the amount of material fed into the preparation vessel, the pipeline system cannot be used simultaneously to deliver cleaning solvent to another preparation vessel. This results in the entire material pipeline being occupied when one preparation vessel is being fed, forcing other preparation vessels requiring cleaning to wait until the feeding operation is completed. This causes equipment downtime and idle capacity, severely impacting the efficiency of continuous production and equipment utilization.

[0004] Furthermore, cleaning operations for preparation vessels generally rely on traditional manual methods. Operators must first manually connect the pipeline supplying the cleaning solvent to the target preparation vessel. This vessel typically has four spray nozzles on top for comprehensive cleaning coverage. During cleaning, operators must manually open the valve corresponding to each spray nozzle sequentially, relying on their experience to control the opening time of each valve to complete the entire spray cleaning process in segments. This cleaning method demands a high level of operator experience. If an operator neglects to open a spray valve or misjudges the situation, resulting in insufficient cleaning time at a single spray point, the corresponding area inside the vessel may not be adequately rinsed, creating cleaning dead zones and increasing the risk of cross-contamination of the product.

[0005] Therefore, there is an urgent need to design an automatic cleaning device for the preparation vessel to solve the above-mentioned technical problems. Utility Model Content

[0006] To address the problems mentioned above, this utility model provides an automatic cleaning device for a mixing vessel, which has the advantages of improving cleaning efficiency and avoiding pipeline occupancy conflicts.

[0007] The present invention adopts the following technical solution:

[0008] An automatic cleaning device for preparation vessels includes two material tanks, spray tanks corresponding to the two material tanks, and multiple preparation vessels, wherein:

[0009] The bottom outlet of the material tank can selectively deliver materials to the preparation vessel or cleaning solvent to the corresponding spray tank through the first pipeline system;

[0010] The top of the preparation vessel is equipped with a spray nozzle, and the outlet of the spray tank can be selectively pumped with cleaning solvent to the spray nozzle of any preparation vessel through a second pipeline system.

[0011] Furthermore, the first pipeline system includes a first pipe and a second pipe connected to the bottom outlet of the material tank. The first pipe is connected to the inlet of each preparation vessel, and the second pipe is connected to the inlet of the corresponding spray tank.

[0012] Furthermore, the second piping system includes a third pipe connected to the outlet of the spray tank, the third pipe being connected to the top spray ports of multiple preparation vessels via branch pipes, and a magnetic pump being installed on the third pipe.

[0013] Furthermore, both the first and third pipes are equipped with flow meters.

[0014] Furthermore, pneumatic shut-off valves are installed on the first pipeline and branch pipelines.

[0015] Furthermore, each preparation vessel is equipped with four spray nozzles circumferentially on its top, and each spray nozzle is connected to a third pipeline through a branch pipe.

[0016] Furthermore, both spray tanks are equipped with level gauges.

[0017] Furthermore, the installation height of the material tank is higher than that of the spray tank.

[0018] Furthermore, it also includes a control system, which is communicatively connected to the first pipeline system and the second pipeline system.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This application achieves parallel operation of material conveying and cleaning by setting up independent material tanks and spray tanks and adopting branch conveying. At the same time, it has the advantages of improving cleaning efficiency and cleaning effect by precisely adjusting the amount of cleaning solvent and spraying time through magnetic pumps and pneumatic shut-off valves. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 An automatic cleaning device for a preparation vessel is provided in one embodiment of this application;

[0023] Figure 2 This is an enlarged view of a spray tank provided in an embodiment of this application;

[0024] Figure 3 An enlarged view of the preparation vessel provided in an embodiment of this application;

[0025] Among them: 1-material tank, 2-spray tank, 3-preparation kettle, 4-first pipeline, 5-second pipeline, 6-third pipeline, 7-branch pipeline, 8-magnetic pump, 9-flow meter, 10-pneumatic shut-off valve, 11-level gauge. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] The following is in conjunction with the appendix Figure 1 To be continued Figure 3 The present invention will be described in detail with specific embodiments.

[0028] This invention provides an automatic cleaning device for preparation tanks, comprising two material tanks 1, spray tanks 2 corresponding to the two material tanks 1, and multiple preparation tanks 3. The bottom outlet of each material tank 1 can selectively supply material to the preparation tank 3 or supply cleaning solvent to the corresponding spray tank 2 via a first pipeline system. Each preparation tank 3 has a spray nozzle at its top, and the outlet of each spray tank 2 can selectively pump cleaning solvent to the spray nozzle of any preparation tank 3 via a second pipeline system. In this embodiment, the two material tanks 1 are a DMC premium tank and an EMC premium tank, respectively. Their bottoms can be connected to two branches via three-way valves, used to supply material to the preparation tank 3 or to the spray tank 2, respectively. By adding spray tanks 2, the material tanks 1 have a dual function: both supplying material for production and storing solvent for the spray tanks 2.

[0029] This application enables material filling and cleaning operations to be performed in parallel by independently setting up spray tank 2, first pipeline system and second pipeline system. When a certain preparation vessel 3 needs to be cleaned, the cleaning solvent in spray tank 2 is pumped to the spray port at the top of the preparation vessel 3 through the branch pipeline of the second pipeline system. Since spray tank 2 is independent of material tank 1, the cleaning operation can be performed simultaneously when other preparation vessels 3 are filled with materials.

[0030] For further details, please refer to [link / reference]. Figure 1The first pipeline system includes a first pipe 4 and a second pipe 5 connected to the bottom outlet of the material tank 1. The first pipe 4 is connected to the inlet of each preparation vessel 3, and the second pipe 5 is connected to the inlet of the corresponding spray tank 2. When the material tank 1 delivers material to the target preparation vessel 3 through the first pipe 4, the second pipe 5 can simultaneously deliver the cleaning solvent to the corresponding spray tank 2. The first pipe 4 adopts a branch connection method, controlling the material filling of the preparation vessel 3 through valves. The second pipe 5 is directionally connected to the corresponding spray tank 2, so that the cleaning solvent forms a storage pool in the spray tank 2. The independent operation mechanism of the two pipeline systems enables the material filling operation and the cleaning solvent storage operation to form a parallel operation mode, eliminating the equipment waiting problem caused by shared pipelines in traditional technologies.

[0031] For further details, please refer to [link / reference]. Figure 2 The second piping system includes a third pipe 6 connected to the outlet of the spray tank 2. The third pipe 6 is connected to the top spray nozzles of each preparation vessel 3 via branch pipes 7, and a magnetic pump 8 is installed on the third pipe 6. The third pipe 6 is a dedicated pipe for conveying the cleaning solvent, and the branch pipes 7 are branch lines connecting the third pipe 6 to each spray nozzle. The cleaning solvent in the spray tank 2 is pressurized by the magnetic pump 8 and enters the third pipe 6, then is distributed to the spray nozzles of multiple preparation vessels 3 via the branch pipes 7. When a preparation vessel 3 needs cleaning, the valve of the corresponding branch pipe 7 opens, and the pressurized cleaning solvent forms a high-speed jet covering the inner wall of the vessel. This application ensures thorough cleaning coverage through the stable pressure output of the magnetic pump 8.

[0032] Furthermore, both the first pipe 4 and the third pipe 6 are equipped with flow meters 9. When materials are transported from the material tank 1 to the preparation vessel 3 through the first pipe 4, the flow meters collect the material flow data in real time and transmit it to the control system to ensure that the amount of material added meets the process requirements. When the cleaning solvent is pumped from the spray tank 2 to the spray nozzle through the third pipe 6, the flow meter 9 on it simultaneously monitors the solvent flow and transmits it to the control system to ensure accurate dosage of the cleaning solvent and thorough cleaning.

[0033] For further details, please refer to [link / reference]. Figure 3 Both the first pipeline 4 and the branch pipeline 7 are equipped with pneumatic shut-off valves 10. The pneumatic shut-off valve 10 is an actuator that uses compressed air to open and close the pipeline. The valve's opening and closing is controlled by a solenoid valve, achieving a millisecond-level response speed, and is used to precisely control the opening sequence of the spray nozzles. During the cleaning process, the pneumatic shut-off valves 10 of the first pipeline 4 and each branch pipeline 7 open sequentially according to the programmed sequence, preventing pressure fluctuations caused by multiple spray nozzles opening simultaneously. After cleaning, the pneumatic shut-off valves 10 close and shut off the pipeline.

[0034] Furthermore, each preparation vessel 3 has four spray nozzles circumferentially arranged on its top, and each spray nozzle is connected to the third pipe 6 via a branch pipe 7. Circumferential arrangement means that the four spray nozzles are evenly distributed around the top circumference of the preparation vessel 3, creating a circular cleaning path within the spray coverage area. Specifically, during cleaning of the preparation vessel 3, the desired cleaning solvent is selected, the magnetic pump 8 on the corresponding spray tank 2 is pneumatically activated, and the pneumatic shut-off valves 10 corresponding to the four spray nozzles on the preparation vessel 3 open sequentially. The spray interval between each spray nozzle is 8 seconds. After the four sets of valves have finished cleaning, the magnetic pump 8 automatically shuts off, and the cleaning is complete.

[0035] Furthermore, both spray tanks 2 are equipped with level gauges 11. The level gauge 11 is a sensor device used to measure the liquid level inside the container; specifically, it can be an ultrasonic level gauge or a pressure level gauge. It collects real-time data on the liquid level of the cleaning solvent in the spray tank 2 and transmits the signal to the control system. When the cleaning solvent is pumped to the preparation vessel 3, the level gauge 11 continuously monitors the remaining solvent level. When the level falls below a preset threshold, the control system automatically triggers a replenishment program to inject new solvent into the spray tank 2; when the level reaches the upper limit, the replenishment program immediately stops to prevent overflow. This process achieves dynamic solvent balance through real-time level feedback, ensuring continuous cleaning operations.

[0036] Furthermore, the installation height of material tank 1 is higher than that of spray tank 2. For example, material tank 1 is installed on the second floor and spray tank 2 is installed on the first floor. When the cleaning solvent stored in material tank 1 needs to be transferred to spray tank 2, the liquid flows naturally into spray tank 2 along the pipe under the action of gravitational potential energy. This process does not require the intervention of additional power equipment, thus reducing pumping energy consumption.

[0037] Furthermore, it also includes a control system, which is communicatively connected to the first and second pipeline systems. The control system automatically generates the timing logic for material conveying and cleaning operations by analyzing production plan information. During the cleaning phase, the control system triggers the magnetic pump 8 to pump solvent to the target preparation vessel 3 based on the liquid level data of the spray tank 2, and sequentially opens different spray nozzles through the pneumatic shut-off valve 10 on the branch pipeline 7. The opening duration of each spray nozzle is precisely controlled based on a preset program; for example, each spray nozzle can be set to open continuously for 8 seconds to ensure uniform coverage of the inner wall of the vessel. This application achieves automated coordination of material conveying and cleaning operations, enabling the feeding and cleaning processes of the preparation vessel 3 to be carried out simultaneously, significantly improving equipment utilization.

[0038] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. An automatic cleaning device for a mixing vessel, characterized in that, It includes two material tanks, spray tanks corresponding one-to-one with the two material tanks, and multiple preparation kettles, wherein: The bottom outlet of the material tank can selectively deliver materials to the preparation vessel or deliver cleaning solvent to the corresponding spray tank through the first pipeline system; The top of the preparation vessel is equipped with a spray nozzle, and the outlet of the spray tank can selectively pump cleaning solvent to the spray nozzle of any of the preparation vessels through a second pipeline system.

2. The automatic cleaning device for a formulation kettle according to claim 1, characterized by The first pipeline system includes a first pipe and a second pipe connected to the bottom outlet of the material tank. The first pipe is connected to the inlets of the plurality of preparation vessels, and the second pipe is connected to the inlet of the corresponding spray tank.

3. The automatic cleaning device for the preparation vessel according to claim 2, characterized in that, The second pipeline system includes a third pipeline connected to the outlet of the spray tank, the third pipeline being connected to the top spray ports of multiple preparation vessels via branch pipelines, and a magnetic pump being installed on the third pipeline.

4. The apparatus according to claim 3, wherein Both the first and third pipes are equipped with flow meters.

5. The automatic cleaning device for the preparation vessel according to claim 3, characterized in that, Pneumatic shut-off valves are installed on the first pipeline and the branch pipeline.

6. The automatic cleaning device for a formulation kettle according to claim 3, characterized by The top circumferential of the preparation vessel is provided with four spray nozzles, and each spray nozzle is connected to the third pipeline through a branch pipe.

7. The automatic cleaning device for a formulation kettle according to claim 1, characterized by Both spray tanks are equipped with level gauges.

8. The automatic cleaning device for a formulation kettle according to claim 1, characterized by, The installation height of the material tank is higher than that of the spray tank.

9. The automatic cleaning device for the preparation vessel according to any one of claims 1 to 8, characterized in that, It also includes a control system, which is communicatively connected to the first pipeline system and the second pipeline system.

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