Device and method for quantitatively adding turbid liquid

Abstract

The invention relates to a device and method for quantitatively adding turbid liquid, and the device comprises a material storage chamber which is used for temporarily storing the turbid liquid; the feeding chamber is communicated with the storage chamber through a liquid inlet pipeline; the air inlet pipeline comprises a first air inlet branch and a second air inlet branch, the first air inlet branch extends into the material storage chamber, and the second air inlet branch extends into the feeding chamber; and the gas storage unit is connected with the gas inlet pipeline and is internally provided with protective gas. Compared with the prior art, the solid feeding device is simple in structure, easy and convenient to operate, low in cost and capable of effectively guaranteeing the stability of solids in the solid feeding process.

Description

Technical Field

[0001] The invention belongs to the technical field of suspension liquid addition, and relates to a device and method for quantitatively adding liquid to a suspension liquid. Background Art

[0002] In the process of organic synthesis experiments, it is often necessary to add suspensions or liquid materials containing fine solid particles. These liquid materials are easily added unevenly or directly block the discharge port in traditional dropping funnels due to the sedimentation of solid particles in the liquid.

[0003] At present, the feeding methods are divided into two modes: traditional manual feeding and system automatic feeding. The advantage of the traditional manual method is that it does not require complex equipment support and is simple to operate. However, due to the uncertainty of manual operation, the feeding rate is difficult to accurately estimate and control, which may lead to excessive or insufficient raw materials and affect the quality of the final product. In addition, during the manual feeding process, workers need to come into direct contact with machines and chemicals, which poses a safety hazard. For example, misoperation may cause personal injury or health problems. For example, in the manual feeding method, with the help of a funnel to manually feed, the operator can try to maintain a uniform distribution of solids in the suspension through physical operations such as periodic shaking and flipping. This method can indeed improve the suspension state of solid particles to a certain extent. However, when the feeding is nearing the end, especially in the last 10% to 20% stage, it is still difficult to avoid the sedimentation of solid particles in the storage device. The solids in the suspension cannot be fully and effectively added to the reaction process, which is very likely to affect the accuracy and repeatability of the experimental results.

[0004] When mixing solid and liquid raw materials, automatic feeding sometimes results in unsatisfactory mixing effects, which may be due to inaccurate automatic control parameter settings. In addition, automatic feeding pumps are prone to blockage during continuous operation, especially when handling raw materials with high viscosity or containing solid particles, which not only affects the continuity of feeding, but also increases maintenance costs and downtime. Finally, the program settings of the automation system are often complex and require professional knowledge for configuration and debugging, which requires high skills of the operator and may take a lot of time in the process of program adjustment and optimization. For example, after the suspension is poured into the constant pressure dropping funnel, it is usually difficult to maintain a uniform distribution of solid particles in the suspension during operation. In the initial stage of dropping, although the solid particles can remain suspended to a certain extent in the liquid, this state is usually not long-lasting. Soon, these solid particles will settle above the outlet of the funnel due to gravity, causing the outlet to be blocked. This blockage not only hinders the smooth flow of the suspension, but also makes the flow rate difficult to control, making it impossible to ensure that the solid particles in the suspension can effectively and evenly enter the reactor to participate in the reaction. Summary of the invention

[0005] The purpose of the present invention is to provide a device and method for quantitatively adding liquid to a suspension, which can effectively avoid problems such as blockage and unevenness that may occur during the addition process.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] In one aspect, the present invention provides a device for quantitatively adding a suspension, comprising:

[0008] Storage room, used for temporarily storing suspension;

[0009] A feed chamber, connected to the storage chamber via a liquid inlet pipeline;

[0010] An air intake pipeline, comprising a first air intake branch and a second air intake branch, wherein the first air intake branch extends into the material storage chamber, and the second air intake branch extends into the material feeding chamber;

[0011] and a gas storage unit connected to the gas inlet pipeline and having built-in protective gas.

[0012] Furthermore, airflow stirring components are provided at the ends of the first air intake branch and the second air intake branch extending into the storage chamber and the feeding chamber respectively.

[0013] Furthermore, the airflow stirring component is a porous bubbler. The porous bubbler here is a commonly used bubbling element in the art, and can be, for example, an annular tube connected to the first air inlet branch and the second air inlet branch, and the tube is sealed with airflow holes of millimeter level or even smaller. More specifically, the airflow holes are arranged in multiple directions such as up, down, left, and right of the annular tube to improve the uniform stirring effect.

[0014] Furthermore, the first air intake branch and the second air intake branch are connected to the air storage unit after being joined.

[0015] Furthermore, a three-way connecting vessel is provided at the junction of the first air intake branch and the second air intake branch.

[0016] Furthermore, the storage chamber is provided with a raw material inlet for feeding the suspension raw material, and a pressure relief port for discharging the internal gas.

[0017] Furthermore, a protective gas outlet is provided on the feed chamber;

[0018] The bottom of the feed chamber is also provided with a liquid outlet, and a liquid outlet cock is arranged at the liquid outlet.

[0019] Furthermore, the liquid inlet pipeline is also provided with a liquid inlet cock for controlling the on-off and opening degree of the pipeline.

[0020] Furthermore, a weighing unit is provided at the bottom of the storage chamber.

[0021] Furthermore, the storage chamber and the air intake chamber are both arranged in the box body.

[0022] In another aspect, the present invention further provides a method for quantitatively adding liquid to a suspension, which is based on the device for quantitatively adding liquid to a suspension as described above, and the method comprises the following steps:

[0023] (1) Pressing the suspension raw material into the storage chamber, introducing protective gas into the storage chamber through the first air inlet branch to evenly distribute the suspension in the storage chamber, and then opening the liquid inlet pipeline to introduce the suspension into the feed chamber;

[0024] (2) Open the second air inlet branch and introduce protective gas into the feed chamber, add the suspension into the feed chamber through the liquid inlet pipeline, prevent sedimentation under the action of bubbles formed by the protective gas, and then add the suspension into the reactor through the outlet of the feed chamber at a constant speed and quantity.

[0025] When the existing device encounters solid sedimentation, the conventional idea is to add a mechanical stirring element to break up the settled solids. However, the present invention has found through research that this mechanical stirring method is not only difficult to break up the solids in the bottom dead corner area, but also generates heat during the stirring process, resulting in the inactivation of the suspension that is more sensitive to temperature. The advantage of the present invention introducing "airflow stirring" to replace "mechanical stirring" is that the gas itself does not generate heat energy, so the heat energy generated by the mechanical stirring process can be avoided; the bottom of the "mechanical stirring" has always been a stirring dead corner, while the "airflow stirring" of the present invention can break up the solids in the dead corner of the "mechanical stirring". In addition, the existing suspension is prone to sedimentation during the quantitative addition process of a large dose. In addition to the airflow stirring component provided in the traditional storage chamber, the present invention further provides an adaptive airflow stirring component in the quantitative addition feed chamber, making it possible to prevent sedimentation during the quantitative addition process.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] (1) The present invention introduces the use of protective gas, which not only provides a relatively safe reaction environment for the suspension, but also plays a key role. The protective gas can be used for airflow stirring through the airflow stirring assembly in the feed chamber and the airflow stirring assembly in the storage chamber, and the solid particles are kept in a suspended state, thereby avoiding blockage and unevenness problems that may occur during the feeding process.

[0028] (2) The present invention is easy to operate, and even if the operator does not understand the principle of the device, he or she can quickly get started. In addition, there is sufficient modification space to add devices such as electronic balances and pressure gauges as needed to further enhance the accuracy of the experiment.

[0029] (3) The present invention allows the suspension to be added to the reactor at a constant speed and in a constant quantity, thereby avoiding the situation where the addition of materials is unstable and thus causes experimental failure.

[0030] (4) The present invention places the entire equipment in a box, which can effectively protect the operator and reduce the harm of chemicals to the human body during operation.

[0031] (5) The protective gas used in the present invention can be recycled by installing a recovery device to avoid waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the present invention;

[0033] Description of the markings in the figure:

[0034] 1-gas cylinder, 2-feeding chamber, 3-liquid outlet, 4-feeding chamber air flow stirring assembly, 5-liquid outlet plug, 6-liquid inlet plug, 7-protective gas outlet, 8-three-way connecting vessel, 9-storage chamber, 10-raw material inlet, 11-pressure relief port, 12-storage chamber air flow stirring assembly. DETAILED DESCRIPTION

[0035] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the following implementation manners or examples, unless otherwise specified, functional components or structures are conventional components or conventional structures used in the art to achieve corresponding functions.

[0039] In order to ensure the stability of solids during the process of adding suspension, the present invention provides a device for quantitatively adding suspension, see Figure 1 As shown, including:

[0040] Storage chamber 9, used for temporarily storing the suspension;

[0041] The feed chamber 2 is connected with the storage chamber 9 through a liquid inlet pipeline;

[0042] An air intake pipeline includes a first air intake branch and a second air intake branch, wherein the first air intake branch extends into the storage chamber 9, and the second air intake branch extends into the feed chamber 2;

[0043] and a gas storage unit connected to the gas inlet pipeline and having built-in protective gas.

[0044] In some specific embodiments, the ends of the first air intake branch and the second air intake branch extending into the storage chamber 9 and the feed chamber 2 respectively are also provided with air flow stirring components.

[0045] In a more specific embodiment, the airflow stirring component is a porous bubbler. For example, it can be an annular tube connected to the first air inlet branch and the second air inlet branch, and the tube is sealed with airflow holes of millimeter level or even smaller. More specifically, the airflow holes are arranged in multiple directions such as up, down, left, right, etc. of the annular tube to improve the stirring effect.

[0046] In some specific embodiments, the first air intake branch and the second air intake branch are connected to the air storage unit. Exemplarily, the air storage unit may be a gas cylinder 1 with a switch.

[0047] In a more specific embodiment, a three-way connector 8 is provided at the junction of the first intake branch and the second intake branch. Exemplarily, the three-way connector 8 may be a three-way valve.

[0048] In some specific embodiments, the storage chamber 9 is provided with a raw material inlet 10 for feeding the suspension raw material, and a pressure relief port 11 for discharging the internal gas.

[0049] In some specific embodiments, the feed chamber 2 is further provided with a protective gas outlet;

[0050] The bottom of the feed chamber 2 is also provided with a liquid outlet 3, and a liquid outlet cock 5 is provided at the liquid outlet 3 to control the on-off and opening degree of the pipeline.

[0051] In some specific implementations, the liquid inlet pipeline is further provided with a liquid inlet cock 6 for controlling the on-off and opening degree of the pipeline.

[0052] In some specific embodiments, a weighing unit is further provided at the bottom of the storage chamber 9. Exemplarily, the weighing unit may be an electronic balance for real-time monitoring and feedback of the overall mass of the storage chamber 9, so as to facilitate control of the mass of the suspension poured into the feed chamber 2.

[0053] In some specific implementations, the storage chamber 9 and the air inlet chamber are both arranged in the box body, which can effectively protect the operator and reduce the harm of chemicals to the human body during operation.

[0054] The above embodiments may be implemented individually or in any combination of two or more.

[0055] The above implementation is described in more detail below in conjunction with specific examples.

[0056] Embodiment 1:

[0057] In order to ensure the stability of solids during the process of adding suspension, the present invention provides a device for quantitatively adding suspension, see Figure 1 As shown, including:

[0058] Storage chamber 9, used for temporarily storing the suspension;

[0059] The feed chamber 2 is connected with the storage chamber 9 through a liquid inlet pipeline;

[0060] An air intake pipeline includes a first air intake branch and a second air intake branch, wherein the first air intake branch extends into the storage chamber 9, and the second air intake branch extends into the feed chamber 2;

[0061] and a gas storage unit connected to the gas inlet pipeline and having built-in protective gas.

[0062] In this embodiment, the ends of the first air inlet branch and the second air inlet branch extending into the storage chamber 9 and the feeding chamber 2, respectively, are also provided with air flow stirring components, namely, the storage chamber air flow stirring component 12 and the feeding chamber air flow stirring component 4. In this embodiment, the two air flow stirring components adopt an annular tube connected to the first air inlet branch and the second air inlet branch, and the tube is sealed with air flow holes of millimeter level or even smaller. More specifically, the air flow holes are arranged in multiple directions such as up, down, left, right, etc. of the annular tube to improve the uniform stirring effect.

[0063] The first air intake branch and the second air intake branch are connected to the air storage unit after being joined. In this embodiment, the air storage unit is a gas cylinder 1 with a switch.

[0064] A three-way connector 8 is provided at the junction of the first air inlet branch and the second air inlet branch. In this embodiment, the three-way connector 8 is a three-way valve. The storage chamber 9 is provided with a raw material inlet 10 for feeding the suspension raw material and a pressure relief port 11 for exhausting the internal gas.

[0065] The feed chamber 2 is also provided with a protective gas outlet; the bottom of the feed chamber 2 is also provided with a liquid outlet 3, and a liquid outlet cock 5 is provided at the liquid outlet 3 to control the on-off and opening degree of the pipeline. The liquid inlet pipeline is also provided with a liquid inlet cock 6 to control the on-off and opening degree of the pipeline. The bottom of the storage chamber 9 is also provided with a weighing unit. In this embodiment, the weighing unit is an electronic balance, which is used to monitor and feedback the overall mass of the storage chamber 9 in real time to facilitate the control of the mass of the suspension poured into the feed chamber 2. The storage chamber 9 and the air inlet chamber are both arranged in the box body, which can effectively protect the operator from reducing the harm of chemicals to the human body during operation.

[0066] The working principle of the device of this embodiment is as follows:

[0067] The present invention presses the suspension raw material into the storage chamber 9 through the raw material inlet 10. The protective gas is pressed into the first air inlet branch through the gas cylinder 1, and under the action of the storage chamber airflow stirring component 12, the suspension in the storage chamber 9 is evenly distributed by stirring the protective gas flow. Then, the inlet cock 6 is opened to pass the suspension into the feed chamber 2, and the feed chamber 2 also has a feed chamber airflow stirring component 4, which can also ensure the uniform distribution of the suspension. The liquid outlet cock 5 at the liquid outlet 3 is adjusted to drip into the reactor below at a constant speed and in a quantitative manner.

[0068] In this method, the shielding gas is sent into the storage chamber 9 by mobilizing the three-way communication device 8 so that the shielding gas can cover the storage chamber 9. After the suspension is poured into the feed chamber 2, the three-way communication device 8 is adjusted again, so that the shielding gas can be passed into the feed chamber 2 from the feed chamber airflow stirring assembly 4 of the second air inlet branch, forming airflow stirring, effectively curbing the sedimentation of the suspension, thereby solving the problem of uneven distribution of solid components in the suspension during the dropwise addition process. And the mass of the suspension poured into the feed chamber 2 can be controlled by installing an electronic balance under the storage chamber 9, thereby ensuring that the suspension of precise mass can be obtained before the dropwise addition experiment, avoiding the phenomenon of excessive dropwise addition due to human operating errors during the experiment. The shielding gas in the feed chamber 2 can be discharged through the shielding gas outlet 7, or recycled as needed, thereby reducing the experimental cost and the impact on the environment.

[0069] The specific use of the device is as follows: before the experiment begins, adjust the angle of the three-way connector 8 so that the air intake pipeline of the gas cylinder 1 can be connected to the storage chamber 9. Open the gas cylinder 1, and introduce the protective gas into the storage chamber 9, so that the protective gas forms a covering layer in the storage chamber 9, thereby effectively preventing the suspension from directly contacting the outside air during the subsequent feeding process, and adjusting the internal air pressure to a slightly positive pressure state by adjusting the pressure relief port 11. Pour the suspension into the storage chamber 9 from the raw material inlet 10. The protective gas increases the protective gas flow rate through the vent of the airflow stirring assembly 12 of the storage chamber to enhance the airflow stirring effect, so as to ensure that the solid particles in the liquid are fully and evenly dispersed.

[0070] Adjust the three-way connector 8 so that the pipeline of the gas cylinder 1 is connected to the storage chamber 9 and the feed chamber 2 at the same time. Open the inlet cock 6 and slowly add the suspension into the feed chamber 2. At this time, the protective gas will pass from the bottom of the suspension through the airflow stirring assembly 4 in the feed chamber. The bubbles generated by the gas in the liquid will form airflow stirring to disrupt the sedimentation of the suspension. At this time, adjust the outlet cock 5 to add the suspension into the reactor at a constant speed and quantity.

[0071] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. A device for quantitatively adding liquid to a suspension, characterized in that: include: Storage room, used for temporarily storing suspension; A feed chamber, connected to the storage chamber via a liquid inlet pipeline; An air intake pipeline, comprising a first air intake branch and a second air intake branch, wherein the first air intake branch extends into the material storage chamber, and the second air intake branch extends into the material feeding chamber; and a gas storage unit connected to the gas inlet pipeline and having built-in protective gas.

2. A device for quantitatively adding liquid to a suspension according to claim 1, characterized in that: The ends of the first air intake branch and the second air intake branch extending into the storage chamber and the feeding chamber respectively are also provided with air flow stirring components.

3. A device for quantitatively adding liquid to a suspension according to claim 2, characterized in that: The airflow stirring component is a porous bubbler.

4. The device for quantitatively adding liquid to a suspension according to claim 1, characterized in that: The first air intake branch and the second air intake branch are connected to the air storage unit after being joined; A three-way connecting vessel is provided at the junction of the first air intake branch and the second air intake branch.

5. The device for quantitatively adding liquid to a suspension according to claim 1, characterized in that: A weighing unit is also provided at the bottom of the storage chamber.

6. The device for quantitatively adding liquid to a suspension according to claim 1, characterized in that: The storage chamber is provided with a raw material inlet for feeding the suspension raw material and a pressure relief port for discharging the internal gas.

7. The device for quantitatively adding liquid to a suspension according to claim 1, characterized in that: The feed chamber is also provided with a protective gas outlet; The bottom of the feed chamber is also provided with a liquid outlet, and a liquid outlet cock is arranged at the liquid outlet.

8. The device for quantitatively adding liquid to a suspension according to claim 1, characterized in that: The liquid inlet pipeline is also provided with a liquid inlet cock for controlling the on-off and opening degree of the pipeline.

9. The device for quantitatively adding liquid to a suspension according to claim 1, characterized in that: The material storage chamber and the air intake chamber are both arranged in the box body.

10. A method for quantitatively adding liquid to a suspension, based on the device for quantitatively adding liquid to a suspension as claimed in any one of claims 1 to 9, characterized in that: The method comprises the following steps: (1) Pressing the suspension raw material into the storage chamber, introducing protective gas into the storage chamber through the first air inlet branch to evenly distribute the suspension in the storage chamber, and then opening the liquid inlet pipeline to introduce the suspension into the feed chamber; (2) Open the second air inlet branch and introduce protective gas into the feed chamber, add the suspension into the feed chamber through the liquid inlet pipeline, prevent sedimentation under the action of bubbles formed by the protective gas, and then add the suspension into the reactor through the outlet of the feed chamber at a constant speed and quantity.

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