Improved liquid material dropwise adding device

Abstract

The technical scheme of the utility model relates to an improved liquid material dripping device, which belongs to the technical field of chemical production equipment and liquid material dripping and mainly comprises a high-position metering tank, a quantitative tank, a floating ball valve, a constant-pressure pipe, an overflow pipe, a fluid disperser and the like. The important innovation point is that a floating ball valve and a quantitative tank are introduced into the design of a dropwise adding device, so that the problem of process deviation that the PH value cannot be accurately regulated and controlled due to excessive acid or alkali addition in previous acid-base neutralization and other reactions is solved. And 2, an overflow pipe is additionally arranged in the dripping device, so that the problem of tank overflow caused by overtime feeding of liquid materials due to negligence of staff can be effectively prevented, and the dripping device is very beneficial to environmental protection and staff safety. And 3, a constant-pressure pipe is introduced into the design of the device, and the stability of the liquid material in the dropwise adding process is ensured by using the constant-pressure pipe. The improved liquid material dripping device disclosed by the utility model also has the characteristics of simple structure, small occupied space, convenience in operation and fool and mistake proofing.

Description

Technical Field

[0001] This utility model belongs to the field of fine chemical production equipment and liquid material dripping technology, and specifically relates to an improved liquid material dripping device. Background Technology

[0002] In the synthesis of fine chemicals and pharmaceuticals, the use of high-level dripping and acid-base neutralization devices is commonplace. The high-level metering tank and the reaction vessel transfer materials from top to bottom by means of the vertical difference, which is both safe and accurate, and does not require additional power.

[0003] In actual operation, traditional high-level dripping devices have advantages, but also exhibit some shortcomings and defects. Defect 1: When operational errors occur during the feeding process, such as a lack of concentration or negligence while busy with other tasks, an overflow accident of liquid material in the high-level metering tank may easily occur. The spilled hazardous chemicals not only threaten production safety but are also very detrimental to environmental protection. Defect 2: When the pressure inside the reactor is higher than the pressure inside the high-level tank, dripping will be obstructed, leading to abnormal dripping, or even causing gas or material in the reactor to backflow into the high-level tank. Defect 3: Traditional high-level tanks are equipped with vent pipes at the top. When the high-level tank contains volatile materials, these volatile acids, alkalis, or organic solvents will evaporate into the atmosphere through the vent pipes, which is detrimental to environmental protection. Defect 4: When acid-base neutralization reaction is required, the amount of acid or base used must be very precise if the pH value is strictly controlled. Traditional dropwise addition methods can easily cause the pH value to deviate due to excessive acid or base, which in turn affects product quality or yield.

[0004] Technicians are working to improve traditional high-level metering tanks according to their own needs, transforming them into high-level dripping devices that are both safe and environmentally friendly, and adaptable to different application conditions. This is a goal that colleagues in the industry are striving for. Summary of the Invention

[0005] To address the above problems, this utility model discloses an improved liquid material dripping device. Based on the traditional high-level metering tank, it adds an overflow pipe to prevent operational errors, introduces a metering tank, and installs a constant pressure pipe, which effectively solves the above problems. This is not only beneficial to environmental protection, but also very beneficial to employee safety.

[0006] This utility model discloses an improved liquid material dripping device, comprising: a high-level metering tank, a metering tank, a float valve, a U-shaped bend, a dripping control valve, a fluid disperser, a constant pressure pipe, an overflow pipe, and a feeding pipe. The high-level metering tank has two openings at the top: one connected to the feeding pipe, and the other connected to the constant pressure pipe connected to the metering tank. The bottom of the high-level metering tank is connected to the U-shaped bend, which extends to connect to the float valve located inside the metering tank. The bottom of the metering tank has an opening through which a portion of the pipe extends into the reaction vessel via the dripping control valve, with the end of the pipe connected to the fluid disperser. In this design, the overflow pipe is an effective preventative measure against potential liquid overflow; the constant pressure pipe is a safety measure to maintain consistent pressure between the high-level metering tank and the metering tank; the metering tank is a technical safety measure for accurate dripping; the U-shaped bend ensures smooth forward propagation of the liquid material; and the fluid disperser is used for uniform dripping, avoiding excessive side effects caused by intense localized reactions. Preferably, the improved liquid material dripping device described in this utility model is characterized in that the overflow pipe extends from the top of the high-level metering tank to the liquid material storage tank in the liquid material tank area, and the high-level metering tank and the liquid material storage tank share the vent pipe on the liquid material storage tank through the overflow pipe.

[0007] Preferably, the improved liquid material dripping device described in this utility model is characterized in that the constant pressure tube is connected to the top of the high-level metering tank and the quantitative tank, and the diameter of the constant pressure tube is 15-40mm.

[0008] Preferably, the improved liquid material dripping device described in this utility model is characterized in that the metering tank has a design capacity of 10-30L and a float valve is installed inside the metering tank.

[0009] Preferably, the improved liquid material dripping device described in this utility model is characterized in that the float valve installed inside the metering tank is made entirely of plastic and consists of a main valve core, a crank arm connecting rod, a float, and a flow port, wherein the float always floats on the liquid surface.

[0010] Preferably, the improved liquid material dripping device described in this utility model is characterized in that the fluid disperser located inside the reaction vessel and at the end of the dripping pipe is a hollow cylinder or ellipsoid made of PP or PE material, and the lower surface of the fluid disperser has 50 to 100 micropores with a diameter of 3 to 5 mm.

[0011] The improved liquid material dripping device described in this utility model has the following significant advantages: 1. The addition of a float valve and a metering tank solves the problem of excessive acid or alkali addition leading to inaccurate pH control in previous acid-base neutralization reactions; 2. The addition of an overflow pipe effectively prevents overflow caused by overfeeding due to employee negligence, which is beneficial for environmental protection and employee safety; 3. The introduction of a constant pressure pipe in this device is a safety measure to maintain consistent pressure between the high-level metering tank and the metering tank, ensuring the stability of the liquid material during the dripping process; 4. The addition of a fluid disperser inside the reaction vessel ensures uniform liquid material dripping, effectively preventing excessive side effects caused by intense local reactions. This improved liquid material dripping device also features a simple structure, compact layout, convenient operation, and error-proof design. Attached Figure Description

[0012] 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.

[0013] Figure 1 This is a schematic diagram of the planar structure of an improved liquid material dripping device according to an embodiment of the present invention.

[0014] Figure 1 Medium: High-level metering tank 01, overflow port 101, level gauge 102, metering tank bottom valve 103, metering tank 02, float valve 201, crank arm connecting rod 202, float 203, liquid outlet 204, constant pressure pipe 205, metering tank bottom valve 206, reaction vessel 03, drip control valve 301, fluid disperser 302, feed pipe 04, overflow pipe 05, U-shaped bend 06. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0016] Reference Figure 1The improved liquid material dripping device described in this specific embodiment includes: a high-level metering tank 01, an overflow port 101, a level gauge 102, a metering tank bottom valve 103, a metering tank 02, a float valve 201, a crank arm connecting rod 202, a float 203, a flow port 204, a constant pressure pipe 205, a metering tank bottom valve 206, a reaction vessel 03, a dripping control valve 301, a fluid disperser 302, a feeding pipe 04, an overflow pipe 05, and a U-shaped bend 06. This embodiment of the improved liquid material dripping device is characterized by having two openings at the top of the high-level metering tank 01. One opening connects to the feeding pipe 04, and the other opening connects to the constant pressure pipe 205 connected to the metering tank 02. A U-shaped bend 06 is connected to the bottom of the high-level metering tank 01, extending to a float valve 201 located inside the metering tank 02. The metering tank 02 has an opening at its bottom, through which a dripping control valve 301 and a portion of a pipe extend into the reaction vessel 03. The end of the pipe is connected to a fluid disperser 302. In this design, the overflow pipe 05 is an effective preventative measure against potential liquid overflow, the constant pressure pipe 205 is a safety measure to maintain consistent pressure between the high-level metering tank 01 and the metering tank 02, the metering tank 02 is a technical safety measure for accurate dripping, the U-shaped bend 06 is an effective measure to ensure the smooth forward propagation of the liquid material, and the fluid disperser 302 is used for uniform dripping, avoiding excessive side effects caused by intense local reactions.

[0017] Furthermore, in the improved liquid material dripping device described in this specific embodiment, the overflow pipe extends from the top of the high-level metering tank to the liquid material storage tank in the liquid material tank area, and the high-level metering tank and the liquid material storage tank share the vent pipe on the liquid material storage tank through the overflow pipe.

[0018] Furthermore, in the improved liquid material dripping device described in this specific embodiment, the constant pressure tube is connected to the top of the high-level metering tank and the quantitative tank, and the diameter of the constant pressure tube is 15-40 mm.

[0019] Furthermore, the improved liquid material dripping device described in this specific embodiment is characterized in that the metering tank has a design capacity of 10-30L, and a float valve is installed inside the metering tank.

[0020] Furthermore, the improved liquid material dripping device described in this specific embodiment is characterized in that the float valve installed inside the metering tank is made entirely of plastic and consists of a main valve core, a crank arm connecting rod, a float, and a flow port, wherein the float always floats on the liquid surface.

[0021] Furthermore, the improved liquid material dripping device described in this specific embodiment is characterized in that the fluid disperser located inside the reaction vessel and at the end of the dripping pipe is a hollow cylinder or ellipsoid made of PP or PE material, and the lower surface of the fluid disperser has 50 to 100 micropores with a diameter of 3 to 5 mm.

[0022] Furthermore, the improved liquid material dripping device described in this specific embodiment has the following simple operation method: Refer to... Figure 1 First, open the bottom valve 103 of the high-level metering tank 01 to allow the liquid material to be added to enter the metering tank 02 along the U-shaped bend 06 and the float valve 201. When the crank arm connecting rod 202 connecting the float 203 is parallel to the bottom surface of the metering tank 02, the float valve closes and the liquid flow stops. Then, open the bottom valve 206 of the metering tank and the dripping control valve 301, and the liquid material begins to drip into the reactor through the fluid disperser 302. When the crank arm connecting rod 202 connecting the float 203 inside the metering tank 02 is perpendicular to the bottom surface of the metering tank 02, the float valve 201 is opened by the force of the float and the crank arm connecting rod, and the liquid material begins to be injected into the metering tank 02 again. Repeating this process can achieve precise quantitative dripping of the liquid material. During the dripping process, the overflow pipe and the constant pressure pipe play a safety protection role.

[0023] The improved liquid material dripping device described in this utility model has the following significant advantages: 1. The addition of a float valve and a metering tank solves the problem of excessive acid or alkali addition during acid-base neutralization reactions, which can lead to inaccurate pH control. 2. The addition of an overflow pipe effectively prevents overflow caused by overfeeding due to employee negligence, thus protecting the environment and employee safety. 3. The constant pressure pipe is a safety feature that maintains consistent pressure between the high-level metering tank and the metering tank, ensuring the stability of the liquid material during the dripping process. 4. The addition of a fluid disperser inside the reaction vessel ensures uniform liquid material dripping, effectively preventing excessive side effects caused by intense local reactions.

[0024] This device, an improved liquid material dripping device described in this utility model, also features a simple structure, compact layout, convenient operation, and error-proof design.

[0025] Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model shall be included within the protection scope of this utility model. The protection scope of this utility model shall conform to the widest range consistent with the principles and novel features described herein.

Claims

1. An improved liquid material drop application device comprising: The high-level metering tank, the quantitative tank, the float ball valve, the U-shaped bend, the drop control valve, the fluid disperser, the constant pressure pipe, the overflow pipe and the feeding pipe are characterized in that two openings are designed on the top of the high-level metering tank, one opening is connected with the feeding pipe, the other opening is connected with the constant pressure pipe connected with the quantitative tank, the bottom of the high-level metering tank is connected with the U-shaped bend, the U-shaped bend is extended and connected with the float ball valve arranged in the quantitative tank, the bottom of the quantitative tank is designed with an opening, the drop control valve and part of the pipe are extended and inserted into the reaction kettle, and the pipe end is connected with the fluid disperser.

2. The improved liquid material dropping device according to claim 1, wherein The overflow pipe is extended from the top of the high-level metering tank to the liquid material storage tank in the liquid material tank area, and the high-level metering tank and the liquid material storage tank share the vent pipe on the liquid material storage tank through the overflow pipe.

3. The improved liquid material dropping device according to claim 1, wherein The constant pressure pipe is connected with the top of the high-level metering tank and the quantitative tank, and the diameter of the constant pressure pipe is 15-40 mm.

4. The improved liquid material dropping device according to claim 1, wherein The quantitative tank is designed with a capacity of 10-30 L, and the float ball valve is arranged in the quantitative tank.

5. The improved liquid material dropping device according to claim 1, wherein The float ball valve arranged in the quantitative tank is made of full plastic material and is composed of a main valve core, a curved arm connecting rod, a float ball and a liquid outlet, and the float ball is always floated on the liquid surface.

6. The improved liquid material dropping device according to claim 1, wherein The fluid disperser arranged at the end of the drop pipe in the reaction kettle is a hollow cylinder or ellipsoid made of PP or PE material, and 50-100 micropores with a diameter of 3-5 mm are formed on the middle and lower surfaces of the fluid disperser.

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