Mixing and stirring kettle with liquid level abnormity alarm function

Abstract

The utility model discloses a mixing and stirring kettle with a liquid level abnormity alarm function, which comprises a stirring kettle, three pipelines and valves, one ends of the three pipelines are respectively communicated with a water weighing device, a methyl ester weighing device and a sodium nitrite weighing device which are provided with feeding control valves, the other ends of the three pipelines are all communicated with the stirring kettle, and the valves are arranged on the stirring kettle. A liquid level meter, a stirring motor and an exhaust pipe are arranged on the stirring kettle, pneumatic valves are arranged at the ends, close to the stirring kettle, of the three pipelines, the three pneumatic valves are electrically connected with a controller, and the controller controls starting and stopping of the stirring motor and an audible and visual alarm through a relay. On the basis of an existing mixing and stirring kettle with the weighing and feeding functions, the pneumatic valve and the controller are additionally arranged, the liquid level meter in the prior art is used for obtaining the liquid level in the stirring kettle, when the liquid level exceeds the set threshold value, the pneumatic valve is closed, the stirring motor is closed, and an alarm is given through the loudspeaker; materials are prevented from being continuously added, loss is reduced, and meanwhile personnel are reminded of faults.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a mixing and stirring kettle with a liquid level abnormality alarm function. Background Art

[0002] Saccharin sodium, also known as sodium o-benzoylsulfonyl imide, requires pre-mixing raw materials such as sodium nitrite, methyl ester, and water, and then reacting the mixed materials in a reactor during the production process. The applicant currently weighs the raw materials in advance during the production process, and introduces the weighed sodium nitrite, methyl ester, and water into the mixing kettle through a pipe with a valve. The mixing kettle is equipped with a liquid level gauge. Since the raw materials are stored and weighed in the raw material workshop, and the mixing kettle and reactor are in the production workshop, the weighing and feeding operators communicate with the stirring and reaction operators through an intercom. The reaction operator sends an operation signal, and the weighing and feeding operators add raw materials through the valve. Since the weighing and feeding operators and the stirring and reaction operators are far away from each other and the stirring and reaction operators control multiple devices at the same time, they may forget whether to add the corresponding raw materials, or the weighing and feeding operators may make mistakes, or the stirring and reaction operators may issue erroneous instructions, resulting in the raw materials being added again after the materials in the mixing kettle are added. This changes the material ratio in the mixing kettle and causes material waste.

[0003] However, since raw material storage and weighing and raw material addition and mixing production are two independent systems, comprehensive automation transformation to achieve information linkage can solve the above problems, but the cost is relatively high. Therefore, how to make small improvements based on the existing production model to solve the above problems is what this application aims to solve. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a mixing kettle with a liquid level abnormality alarm function. By adding pneumatic valves and controllers on the basis of existing equipment, the raw material liquid level can be monitored and alarmed without changing the existing layout and working mode, and the cost is low.

[0005] In order to solve the above technical problems, the utility model provides a technical solution: a mixing kettle with a liquid level abnormality alarm function, comprising a mixing kettle, a pipe and a valve, wherein there are three pipes, one end of the three pipes is respectively connected to a water weighing device, a methyl ester weighing device and a sodium nitrite weighing device with a feeding control valve, and the other ends of the three pipes are all connected to the top of the mixing kettle, the mixing kettle is provided with a liquid level gauge, a stirring motor and an exhaust pipe, and the bottom of the mixing kettle is connected to the reactor through a pipe with a reaction valve, which is characterized in that: a pneumatic valve is provided on one end of the three pipes close to the mixing kettle, the three pneumatic valves are electrically connected to a controller, and the controller controls the start and stop of the stirring motor and the sound and light alarm through a relay.

[0006] Furthermore, a tee is provided on the pipeline between the reaction valve and the stirring tank, and the other end of the tee is connected to the pipeline provided with a manual valve.

[0007] The beneficial effects of the utility model are:

[0008] Based on the existing mixing kettle with weighing and adding function, this application adds a pneumatic valve and a controller, and uses the liquid level meter in the existing technology to obtain the liquid level in the mixing kettle. When the liquid level exceeds the set threshold, the pneumatic valve is closed, the stirring motor is turned off, and an alarm is sounded through the loudspeaker to prevent the continued addition of materials to reduce losses and remind personnel that a fault has occurred. At the same time, under the action of the manual valve on the lower side of the mixing kettle, the mixed material can be discharged after the fault occurs.

[0009] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only two of the drawings in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 This is a schematic diagram of the structure of this application.

[0012] In the figure, 1-stirring tank, 2-water weighing device, 3-methyl ester weighing device, 4-sodium nitrite weighing device, 5-pipeline, 6-liquid level gauge, 7-stirring motor, 8-exhaust pipe, 9-reaction valve, 10-pneumatic valve, 11-manual valve, 12-controller, 13-sound and light alarm. DETAILED DESCRIPTION

[0013] The following describes embodiments of the present invention in detail with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0014] It should be understood that the steps described in the method embodiments of the present invention may be performed in a different order. Furthermore, the method embodiments may include additional steps or omit the steps shown. The scope of the present invention is not limited in this respect.

[0015] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only used for illustrative purposes and are not used to limit the scope of these messages or information. Example 1

[0016] like Figure 1 As shown, a mixing stirred tank with a liquid level abnormality alarm function includes a stirring tank 1, a pipe 5 and a valve. There are three pipes 5. One end of the three pipes 5 is respectively connected to a water weighing device 2, a methyl ester weighing device 3 and a sodium nitrite weighing device 4 with a feeding control valve, and the other ends of the three pipes 5 are all connected to the top of the stirring tank 1. The stirring tank 1 is provided with a liquid level gauge 6, a stirring motor 7 and an exhaust pipe 8. The bottom of the stirring tank 1 is connected to the reactor through a pipe 5 with a reaction valve 9. A pneumatic valve 10 is provided on one end of the three pipes 5 close to the stirring tank 1. The three pneumatic valves 10 are electrically connected to a controller 12. The controller 12 controls the start and stop of the stirring motor 7 and the sound and light alarm 13 through a relay; and the liquid level gauge 6 in the prior art is used to obtain the liquid level in the stirring tank 1. When the liquid level exceeds the set threshold, the pneumatic valve 10 is closed, the stirring motor 7 is turned off and an alarm is issued through a loudspeaker.

[0017] Among them, a tee is provided on the pipeline 5 between the reaction valve 9 and the stirring tank 1, and the other end of the tee is connected to the pipeline 5 provided with a manual valve 11; under the action of the manual valve 11 on the lower side of the stirring tank 1, the mixed material after the failure can be discharged, and the stirring tank 1 can be quickly emptied and the raw materials can be added again.

[0018] The use process of the technical solution formed by the above embodiments is as follows: the weighing and adding operator weighs the water, methyl ester and potassium nitrite solution in advance. After the reaction operator sends the adding information to the weighing and adding operator through the intercom, the weighing and adding operator adds the raw materials to the stirring tank 1 in sequence through the adding control valve. While adding the raw materials, the stirring motor 7 works to stir. The controller 12 obtains the liquid level in the stirring tank 1 through the liquid level meter 6. When the weighing and adding operator makes an operation error and misoperates the adding control valve to add raw materials, the liquid level in the reactor rises. When the liquid level exceeds the threshold, the controller 12 closes the pneumatic valve 10 to prevent the raw materials from continuing to enter the reactor, reducing the loss of pre-weighed raw materials. At the same time, the stirring motor 7 stops working, and the sound and light alarm 13 sounds an alarm. After receiving the sound and light alarm information, the stirring and reaction operator sends a message to the weighing and adding operator through the intercom, and the weighing and adding operator closes the adding control valve.

[0019] The controller 12 can be any mature industrial computer in the prior art, and can be connected to the valve and liquid level meter 6 according to the instructions. At the same time, the valve and liquid level sensor can also be of the commonly used models in the prior art.

[0020] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are readily apparent to those skilled in the art without departing from the scope of protection of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the appended claims.

Claims

1. A mixing and stirring kettle with a liquid level abnormality alarm function, comprising a mixing kettle, pipes, and valves, wherein the pipes are three, one end of each of the three pipes being connected to a water weighing device, a methyl ester weighing device, and a sodium nitrite weighing device, each of which has a feeding control valve, and the other end of each of the three pipes being connected to the top of the mixing kettle, which is provided with a liquid level gauge, a stirring motor, and an exhaust pipe. The bottom of the mixing kettle is connected to the reactor via a pipe with a reaction valve, and the invention is characterized in that: Pneumatic valves are provided on one end of the three pipes close to the stirring kettle. The three pneumatic valves are electrically connected to a controller. The controller controls the start and stop of the stirring motor and the sound and light alarm through a relay.

2. The mixing and stirring kettle with a liquid level abnormality alarm function according to claim 1, characterized in that: A tee is provided on the pipeline between the reaction valve and the stirring kettle, and the other end of the tee is communicated with the pipeline provided with a manual valve.

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