Material dropwise adding device

Abstract

The utility model discloses a material dripping device which comprises a liquid storage tank and a metering tank, a discharging pipe is arranged at the bottom of the liquid storage tank, a liquid flowmeter is arranged on the discharging pipe, the metering tank is communicated with a feeding pipe through a connecting pipe, a liquid outlet of the metering tank is connected with a feeding port of a reaction kettle, and a dripping mechanism is arranged at the top of the reaction kettle. The dripping mechanism comprises a flow guide plate and a dripping plate which are transversely arranged in the reaction kettle, a flow guide cavity is formed between the flow guide plate and the top of the reaction kettle, and a feeding cavity communicated with the flow guide cavity is formed between the dripping plate and the flow guide plate. According to the material dripping device provided by the utility model, conveyed liquid raw materials can be metered through the liquid storage tank, the liquid flow meter and the metering tank, so that errors in the adding amount of the liquid raw materials are avoided, and the different liquid raw materials can be sufficiently mixed, dispersed and uniformly dripped into reaction materials in the reaction kettle through the feeding mechanism.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and in particular to a material dripping device. Background Technology

[0002] In chemical production processes, the reactor, as a critical reaction vessel, plays a vital role in the smooth progress of the reaction and the quality of the product due to the method of material addition. Traditional reactors typically use a single-channel dripping method for adding liquid materials. This method is relatively simple to operate and has low equipment costs. For some chemical reactions that do not have strict requirements on reaction conditions and are less affected by the uniformity and proportion stability of material mixing, it can meet basic production needs.

[0003] However, with the continuous development of chemical production processes and increasingly stringent requirements for product quality, the traditional single-channel dropwise addition method in reactors, where liquid raw materials are added sequentially through a single feed pipe, results in limited distribution of materials within the reactor during the initial dropwise stage. This makes it difficult for the materials to quickly and uniformly diffuse throughout the entire reaction system. Especially when the reactor is large, the materials require a considerable amount of time to diffuse to all corners, leading to excessively high or low concentrations of different materials in localized areas. This disrupts the uniformity of the reaction, severely impacting reaction consistency and product quality stability. Furthermore, if the amount of any one material added is incorrect, the entire batch often risks being scrapped. Utility Model Content

[0004] The purpose of this invention is to provide a material dripping device to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A material dripping device includes a storage tank and a metering tank. The storage tank has a discharge pipe at its bottom, and a liquid flow meter is installed on the discharge pipe. The metering tank has an inlet and an outlet. The inlet is connected to the discharge pipe via a connecting pipe. The outlet has a feeding pipe connected to a reaction vessel. The reaction vessel has a dripping mechanism at its top. The dripping mechanism includes a guide plate and a dripping plate that run horizontally through the reaction vessel. A guide cavity is formed between the guide plate and the top of the reaction vessel, and a feeding cavity is formed between the dripping plate and the guide plate. The feeding port on the reaction vessel is connected to the guide cavity. A delivery opening connected to the feeding cavity is provided on the side of the guide cavity away from the feeding port. The dripping plate has multiple dripping holes, and a dripping head is provided at the bottom of each dripping hole.

[0007] In the aforementioned material dripping device, there are at least two storage tanks, and each storage tank is equipped with a discharge pipe at its bottom. Both the discharge pipe and the feed pipe are equipped with control valves.

[0008] In the aforementioned material dripping device, the guide plate and the dripping plate are coaxially arranged, and the center positions of the guide plate and the dripping plate are connected by a connecting cylinder.

[0009] In the aforementioned material dripping device, the guide plate includes an inclined plate and a horizontal plate connected together. The inclined plate is disposed on the side near the feed port, and the infusion opening is disposed on the horizontal plate.

[0010] The aforementioned material dripping device also includes a rotating guide assembly disposed within the guide cavity, the rotating guide assembly being connected to a stirring shaft within the reactor.

[0011] The aforementioned material dripping device includes a rotating guide assembly comprising a connecting bushing and rotating blades disposed on the connecting bushing, the connecting bushing being fixedly mounted on the stirring shaft.

[0012] In the aforementioned material dripping device, the dripping plate is provided with an inclined surface in the direction from the side wall of the reactor towards the center, and the dripping through holes are arranged sequentially at intervals along the inclined surface.

[0013] In the above technical solution, the material dripping device provided by this utility model includes a storage tank and a metering tank. A discharge pipe is provided at the bottom of the storage tank, and a liquid flow meter is installed on the discharge pipe. The metering tank is connected to the feeding pipe via a connecting pipe. The outlet of the metering tank is connected to the feeding port of the reaction vessel. A dripping mechanism is provided at the top of the reaction vessel. The dripping mechanism includes a guide plate and a dripping plate horizontally disposed within the reaction vessel. A guide cavity is formed between the guide plate and the top of the reaction vessel, and a feeding cavity connected to the guide cavity is formed between the dripping plate and the guide plate. Thus, during use, liquid raw materials are transported from the storage tank to the metering tank, and the liquid flow meter can measure the liquid transported from the storage tank. Once the liquid is delivered to the metering tank, it can be measured again to avoid errors in the amount of liquid raw materials added. Furthermore, the liquid raw materials can be buffered and mixed within the metering tank. The liquid is then transported to the flow guiding chamber through the feed pipe and feed port, where it is buffered and guided. It is then transported to the feed chamber through the liquid inlet and dispersed into the reactor through multiple drop holes and drop heads on the drop plate. In this way, the liquid raw material can be evenly distributed and added to the reaction material in the reactor. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the material dripping device provided in an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the dripping mechanism provided in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Storage tank; 11. Discharge pipe; 12. Liquid flow meter; 13. Control valve; 2. Metering tank; 21. Connecting pipe; 22. Feeding pipe; 3. Reactor; 31. Feeding port; 32. Stirring shaft; 4. Dropping mechanism; 41. Guide plate; 411. Inclined plate; 412. Horizontal plate; 413. Infusion opening; 42. Guide cavity; 43. Dropping plate; 431. Dropping through hole; 432. Dropping head; 44. Feeding chamber; 5. Rotary guide assembly; 51. Connecting bushing; 52. Rotating blade. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0020] like Figure 1-2 As shown, this utility model provides a material dripping device, including a storage tank 1 and a metering tank 2. A discharge pipe 11 is provided at the bottom of the storage tank 1, and a liquid flow meter 12 is installed on the discharge pipe 11. The metering tank 2 is provided with an inlet and an outlet. The inlet is connected to a feeding pipe 22 via a connecting pipe 21, and the outlet is connected to a feeding pipe 22 that is connected to a reaction vessel 3. A dripping mechanism 4 is provided at the top of the reaction vessel 3. The dripping mechanism 4 includes a component that is horizontally positioned at the top of the reaction vessel 3. The flow guide plate 41 and the drip plate 43 form a flow guide cavity 42 between the flow guide plate 41 and the top of the reactor 3, and a feeding cavity 44 between the drip plate 43 and the flow guide plate 41. The feeding port 31 on the reactor 3 is connected to the flow guide cavity 42. A liquid delivery opening 413 connected to the feeding cavity 44 is provided on the side of the flow guide cavity 42 away from the feeding port 31. The drip plate 43 is provided with multiple drip through holes 431, and a drip head 432 is provided at the bottom of each drip through hole 431.

[0021] Specifically, the storage tank 1 is used to store the liquid raw materials to be added. There can be one, two, or more storage tanks 1, so that different liquid raw materials can be stored in each storage tank 1. A discharge pipe 11 is provided at the bottom of the storage tank 1, which is used to output the liquid raw materials in the storage tank 1. The discharge pipe 11 is connected to the connecting pipe 21. If there are two, three, or more storage tanks 1, each discharge pipe 11 is connected to the connecting pipe 21. A liquid flow meter 12 is provided on each discharge pipe 11, which can measure the liquid raw materials being transported. The metering tank 2 is provided with an inlet and an outlet. The inlet is connected to the connecting pipe 21, so that various liquid raw materials can be transported into the metering tank 2 through the inlet. The metering tank 2 can measure the liquid raw materials. If there are two or more liquid raw materials, the metering tank 2 can buffer and mix the liquid raw materials, and then the mixed liquid raw materials are transported into the reaction vessel 3.

[0022] In this embodiment, a feeding pipe 22 is provided on the outlet of the metering tank 2, and a feeding port 31 is provided on the reactor 3. The feeding pipe 22 is connected to the feeding port 31. A dripping mechanism 4 is provided on the top of the reactor 3. The dripping mechanism 4 can disperse and drip liquid raw materials into the reactor 3. Thus, when there are two, three, or more raw materials being dripped, the dripping mechanism 4 can buffer and mix the liquid raw materials, so that the liquid raw materials can be fully mixed together before being dripped into the reactor 3. The dripping mechanism 4 includes a guide plate 41 and a dripping plate 43. Both the guide plate 41 and the dripping plate 43 are horizontally arranged on the inner wall of the reactor 3, that is, both the guide plate 41 and the dripping plate 43 are arranged perpendicular to the axis of the reactor 3. The guide plate 41 is located directly above the dripping plate 43. A guide cavity 42 is formed between the guide plate 41 and the top of the reactor 3. The guide cavity 42 is connected to the feeding port 31 of the reactor 3.

[0023] In this embodiment, there is a certain gap between the dripping plate 43 and the guide plate 41, so that the gap between the dripping plate 43 and the guide plate 41 forms a feeding chamber 44. The guide plate 41 is provided with a liquid infusion opening 413, which is located on the side of the guide plate 41 away from the feeding port 31. The guide chamber 42 and the feeding chamber 44 are connected through the liquid infusion opening 413. Multiple dripping through holes 431 are provided on the dripping plate 43, and the multiple dripping through holes 431 are arranged sequentially at intervals along the circumference of the dripping plate 43. A dripping head 432 is provided on each dripping through hole 431.

[0024] This utility model provides a material dripping device, including a storage tank 1 and a metering tank 2. The bottom of the storage tank 1 is provided with a discharge pipe 11, and a liquid flow meter 12 is provided on the discharge pipe 11. The metering tank 2 is connected to the feeding pipe 22 through a connecting pipe 21. The liquid outlet of the metering tank 2 is connected to the feeding port 31 of the reaction vessel 3. The top of the reaction vessel 3 is provided with a dripping mechanism 4. The dripping mechanism 4 includes a guide plate 41 and a dripping plate 43 that are horizontally arranged on the top of the reaction vessel 3. A guide cavity 42 is formed between the guide plate 41 and the top of the reaction vessel 3. A feeding cavity 44 that is connected to the guide cavity 42 is formed between the dripping plate 43 and the guide plate 41. In this way, during use, the liquid raw material is transported to the metering tank 2 through the storage tank 1, and the liquid transported by the storage tank 1 can be metered by the liquid flow meter 12. The liquid is transported to the metering tank 2, and the metering tank 2 can be metered again to avoid errors in the amount of liquid raw material added. The liquid raw material can be buffered and mixed in the metering tank 2. The liquid is then transported to the guide chamber 42 through the feed pipe 22 and the feed port 31. It is buffered and guided in the guide chamber 42 and then transported to the feed chamber 44 through the liquid delivery opening 413. It is then dispersed and dripped into the reaction vessel 3 through multiple dripping holes 431 and dripping heads 432 on the dripping plate 43, so that the liquid raw material is evenly dripped into the reaction material in the reaction vessel 3.

[0025] In this embodiment, preferably, there are at least two liquid storage tanks 1, each of which stores different liquid raw materials. Each liquid storage tank 1 is provided with a discharge pipe 11 at its bottom. Both the discharge pipe 11 and the feeding pipe 22 are provided with control valves 13. The discharge pipe 11 and the feeding pipe 22 can be controlled by the control valves 13 to open or close them. In this way, during use, the liquid raw materials can be delivered to the metering tank 2 according to a preset ratio through the control valves 13 and the liquid flow meter 12.

[0026] In this embodiment, preferably, the guide plate 41 and the dripping plate 43 are coaxially arranged, and the center positions of the guide plate 41 and the dripping plate 43 are connected to each other through a connecting cylinder. The connecting cylinder is used for the rotating installation of the stirring shaft 32 in the reactor 3. The reactor 3 is provided with a stirring device for stirring the reactor 3. The stirring device includes a drive unit, a stirring shaft 32 and a stirring component. The stirring device in the reactor 3 is prior art and will not be described in detail. The connecting cylinder is used for the stirring shaft 32 to pass through.

[0027] In this embodiment, preferably, the guide plate 41 includes a connected inclined plate 411 and a horizontal plate 412. The inclined plate 411 is located on the side near the feed port 31, that is, the inclined plate 411 is located directly below the feed port 31. The infusion opening 413 is located on the horizontal plate 412. When the liquid raw material is transported from the feed port 31 to the guide cavity 42, the liquid raw material is first transported to the inclined plate 411, flows through the inclined plate 411 to the horizontal plate 412, and finally is transported from the infusion opening 413 into the feed cavity 44. In this way, the inclined plate 411 can buffer the liquid raw material.

[0028] In this embodiment, preferably, a rotary guide assembly 5 is also included, which is disposed in the guide cavity 42 and connected to the stirring shaft 32. The rotary guide assembly 5 includes a connecting bushing 51 and rotating blades 52 disposed on the connecting bushing 51. The connecting bushing 51 is fixedly installed on the stirring shaft 32. The number of rotating blades 52 can be one, two, three or more. When the stirring shaft 32 rotates, it drives the connecting bushing 51 and the rotating blades 52 to rotate, thereby causing the rotating blades 52 to rotate in the guide cavity 42 to stir different liquid raw materials and mix them. In this way, in the guide cavity 42, the guide plate 41 can buffer the liquid and reduce the flow rate of the liquid, and the rotating blades 52 can stir the liquid, so that different liquids are fully mixed.

[0029] In this embodiment, preferably, the drip plate 43 is provided with an inclined surface in the direction from the side wall of the reactor 3 toward the center, and the drip through holes are arranged sequentially at intervals along the inclined surface. In this way, after the liquid is transported from the infusion opening 413 to the feeding chamber 44, it is transported sequentially to each drip head through multiple drip through holes, and then dispersed and transported to the reactor 3 through the drip heads.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A material dropwise adding device characterized by comprising: The application relates to a liquid feeding device, which comprises a liquid storage tank and a metering tank, wherein the bottom of the liquid storage tank is provided with a discharge pipe, the discharge pipe is provided with a liquid flow meter, the metering tank is provided with a liquid inlet and a liquid outlet, the liquid inlet is connected with the discharge pipe through a connecting pipe, the liquid outlet is provided with a feeding pipe connected with a reaction kettle, the top of the reaction kettle is provided with a drop feeding mechanism, the drop feeding mechanism comprises a flow guide plate and a drop feeding plate arranged in the reaction kettle, a flow guide cavity is formed between the flow guide plate and the top of the reaction kettle, a feeding cavity is formed between the drop feeding plate and the flow guide plate, a feeding opening of the reaction kettle is connected with the flow guide cavity, the side of the flow guide cavity away from the feeding opening is provided with a liquid feeding opening connected with the feeding cavity, the drop feeding plate is provided with a plurality of drop liquid through holes, and the bottom of each drop liquid through hole is provided with a drop liquid head.

2. The material dosing apparatus according to claim 1, characterized in that The liquid storage tank is at least two, the bottom of each liquid storage tank is provided with the discharge pipe, and the discharge pipe and the feeding pipe are provided with control valves.

3. The material dosing apparatus according to claim 1, characterized in that The flow guide plate and the drop feeding plate are coaxially arranged, and the center positions of the flow guide plate and the drop feeding plate are connected through a connecting cylinder.

4. The material dosing apparatus according to claim 1, characterized in that The flow guide plate comprises a connecting inclined plate and a horizontal plate, the connecting inclined plate is arranged on the side close to the feeding opening, and the liquid feeding opening is arranged on the horizontal plate.

5. The material dosing apparatus according to claim 1, characterized in that The application further comprises a rotating flow guide assembly arranged in the flow guide cavity, and the rotating flow guide assembly is connected with a stirring shaft in the reaction kettle.

6. The material dosing apparatus according to claim 5, characterized in that The rotating flow guide assembly comprises a connecting shaft sleeve and rotating blades arranged on the connecting shaft sleeve, and the connecting shaft sleeve is fixedly installed on the stirring shaft.

7. The material dosing apparatus of claim 1, wherein The drop feeding plate is provided with an inclined surface in the direction from the side wall of the reaction kettle to the center, and the drop feeding through holes are sequentially and spacedly arranged along the inclined surface.

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