A constant rate liquid chemical addition device

Abstract

The utility model relates to a kind of liquid chemicals devices of uniform velocity addition, including storage tank, the surface of storage tank is fixedly installed with control system, the inside of storage tank is equipped with cavity, the inside of cavity is fixedly installed with peristaltic pump, the bottom of storage tank is fixedly installed with conveying pipeline, the surface of conveying pipeline is fixedly installed with flowmeter, the end of conveying pipeline away from storage tank is fixedly installed with bellows, the inside of storage tank is fixedly installed with stirring assembly.This liquid chemicals device of uniform velocity addition, by setting through setting sealing assembly adopts electric push rod drive cover plate, cooperate fluorine rubber sealing pad to realize the automatic opening and closing and sealing of feed inlet, avoid the leakage risk caused by artificial operation, meet OSHA dangerous chemicals operation specification;Three groups of stirring rods of spiral distribution form three-dimensional flow field, improve mixing efficiency, ensure that liquid chemicals concentration is consistent, provide quality guarantee for subsequent uniform velocity addition.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment technology for chemical production, specifically a device for uniformly adding liquid chemicals. Background Technology

[0002] In chemical production, laboratory research, and related industrial processes, it is often necessary to add liquid chemicals at a constant rate to the reaction system or other processing steps.

[0003] Currently, traditional liquid chemical addition devices have many shortcomings. On the one hand, in the feeding stage, most devices use manual opening and closing of the feed inlet. This method is not only inefficient, but also makes it difficult to ensure the sealing and stability of the feeding process, which can easily lead to chemical leakage or the introduction of impurities, affecting subsequent production or experimental results. On the other hand, for liquid chemicals in storage tanks, many devices lack effective stirring measures, or the stirring structure is simple and the stirring effect is poor, which makes it easy for chemicals to precipitate and separate during storage, resulting in uneven concentration, which in turn affects the accuracy of addition and the consistency of chemical reaction.

[0004] Therefore, a device for uniformly adding liquid chemicals is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a device for uniformly adding liquid chemicals, which has advantages such as automatic opening and closing of the feed inlet. This solves the problem that most devices rely on manual opening and closing of the feed inlet during the feeding process. This method is not only inefficient, but also makes it difficult to ensure the sealing and stability of the feeding process, which can easily lead to chemical leakage or the introduction of impurities, affecting subsequent production or experimental results.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for uniformly adding liquid chemicals, comprising a storage tank, a control system fixedly installed on the surface of the storage tank, a cavity opened inside the storage tank, a peristaltic pump fixedly installed inside the cavity, a delivery pipe fixedly installed at the bottom of the storage tank, a flow meter fixedly installed on the surface of the delivery pipe, a corrugated pipe fixedly installed at the end of the delivery pipe away from the storage tank, a stirring assembly fixedly installed inside the storage tank, and a sealing assembly fixedly installed inside the storage tank near the top;

[0007] The sealing assembly includes a top plate welded to the top of the storage tank, an installation cavity opened inside the top plate, an electric push rod fixedly installed inside the installation cavity, a cover plate fixedly installed at the drive end of the electric push rod, and a sealing gasket fixedly installed around the periphery of the cover plate.

[0008] The stirring assembly includes a drive motor fixedly installed at the bottom of the top plate, a rotating rod fixedly installed at the output shaft of the drive motor, three sets of stirring rods welded to the outer surface of the rotating rod, a set of connecting plates fixedly installed on the surface of the rotating rod, and scrapers fixedly installed between the set of connecting plates.

[0009] Preferably, the outlet of the peristaltic pump is fixedly connected to the inlet of the delivery pipeline, the cavity, the peristaltic pump and the delivery pipeline are interconnected, and a sealing flange is provided at each connection.

[0010] Preferably, the top of the storage tank is provided with a feed inlet, and the inner wall of the feed inlet is in contact with a sealing gasket, which is made of fluororubber.

[0011] Preferably, each group of stirring rods consists of three rods, and one end of the scraper is in contact with the inner wall of the cavity.

[0012] Preferably, the surface of the control system is embedded with a control panel, and the control panel is electrically connected to the peristaltic pump, flow meter, electric actuator and drive motor through wires.

[0013] Preferably, the bottom of the storage tank is fixedly equipped with three support legs, and the bottom of each of the three support legs is provided with an anti-slip pad.

[0014] Preferably, the three sets of stirring rods and connecting plates are spirally distributed in the cavity, and a rubber strip is fixedly installed on one side of the scraper, with the rubber strip in contact with the inner wall of the cavity.

[0015] Preferably, the cavity is circular, and the cover plate is adapted to the shape of the feed inlet.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0017] 1. This uniform liquid chemical addition device uses an electrically driven push rod to automatically open and close the inlet and seal it through a sealing assembly, which, together with a fluororubber sealing gasket, avoids the risk of leakage caused by manual operation and complies with OSHA hazardous chemical handling guidelines. At the same time, three sets of spirally distributed stirring rods form a three-dimensional flow field, improving mixing efficiency and ensuring consistent liquid chemical concentration, providing quality assurance for subsequent uniform addition. The scraper continuously removes adhering substances from the inner wall of the chamber, preventing chemical residue and deterioration, reducing material waste, and lowering the frequency of cleaning and maintenance.

[0018] 2. This uniform liquid chemical addition device drives liquid flow by controlling a peristaltic pump within the chamber. The peristaltic pump periodically squeezes the tubing with rollers, pumping the liquid out of the storage tank. The pumped liquid is then transported through a delivery pipe at the bottom of the storage tank. A flow meter on the delivery pipe monitors the liquid flow rate in real time and feeds the data back to the control system. The control system compares and analyzes the preset flow rate value with the data fed back by the flow meter, and dynamically adjusts the speed of the peristaltic pump using a PID algorithm to ensure stable liquid flow. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural view of the device for uniformly adding liquid chemicals according to this utility model;

[0020] Figure 2 This is a front sectional view of the structure of the device for uniformly adding liquid chemicals according to this utility model;

[0021] Figure 3 This is a top view of the sealing assembly structure of this utility model;

[0022] Figure 4 This is a three-dimensional view of the stirring assembly structure of this utility model.

[0023] In the diagram: 1. Storage tank; 2. Control system; 3. Cavity; 4. Peristaltic pump; 5. Delivery pipeline; 6. Flow meter; 7. Bellows; 8. Stirring assembly; 801. Drive motor; 802. Rotary rod; 803. Stirring rod; 804. Connecting plate; 805. Scraper; 9. Sealing assembly; 901. Top plate; 902. Mounting cavity; 903. Electric push rod; 904. Cover plate; 905. Sealing gasket. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4This embodiment of a device for uniformly adding liquid chemicals includes a storage tank 1, a control system 2 fixedly installed on the surface of the storage tank 1, a cavity 3 inside the storage tank 1, a peristaltic pump 4 fixedly installed inside the cavity 3, a delivery pipe 5 fixedly installed at the bottom of the storage tank 1, a flow meter 6 fixedly installed on the surface of the delivery pipe 5, a corrugated pipe 7 fixedly installed at the end of the delivery pipe 5 away from the storage tank 1, a stirring assembly 8 fixedly installed inside the storage tank 1, a sealing assembly 9 fixedly installed inside the storage tank 1 near the top, the outlet of the peristaltic pump 4 fixedly connected to the inlet of the delivery pipe 5, the cavity 3, the peristaltic pump 4 and the delivery pipe 5 are interconnected, and sealing flanges are provided at all connections.

[0026] In this embodiment, the liquid is stored in the storage tank 1. When it is necessary to add liquid to the equipment at a constant rate, it can be connected to the equipment through the corrugated pipe 7. Then, the peristaltic pump 4 serves as the power source. The liquid flow is driven by controlling the peristaltic pump 4 in the cavity 3. The peristaltic pump 4 periodically squeezes the hose through the roller to pump the liquid out of the storage tank 1. The pumped liquid is transported through the delivery pipe 5 at the bottom of the storage tank 1. The flow meter 6 on the delivery pipe 5 monitors the liquid flow rate in real time and feeds the data back to the control system 2. The control system 2 compares and analyzes the preset flow rate value with the data fed back by the flow meter 6, and dynamically adjusts the speed of the peristaltic pump 4 through the PID algorithm to ensure stable liquid flow. The corrugated pipe 7 at the end of the delivery pipe 5 plays a buffering and compensation role, reducing the impact of equipment vibration or installation errors on the stability of liquid delivery, and finally achieving the constant rate addition of liquid chemicals.

[0027] The sealing assembly 9 includes a top plate 901 welded to the top of the storage tank 1, an installation cavity 902 opened inside the top plate 901, an electric push rod 903 fixedly installed inside the installation cavity 902, a cover plate 904 fixedly installed at the drive end of the electric push rod 903, and a sealing gasket 905 fixedly installed around the periphery of the cover plate 904.

[0028] The storage tank 1 is provided with a feed inlet at the top, and the inner wall of the feed inlet is in contact with the sealing gasket 905, which is made of fluororubber.

[0029] In this embodiment, when the liquid is delivered into the storage tank 1, the cover plate 904 is moved by the electric push rod 903, so that the sealing gasket 905 on the cover plate 904 is completely in contact with the inner wall of the feed inlet, ensuring the sealing effect. The automatic design reduces the need for manual opening of the feed inlet and improves convenience.

[0030] The stirring assembly 8 includes a drive motor 801 fixedly installed at the bottom of the top plate 901, a rotating rod 802 fixedly installed at the output shaft of the drive motor 801, three sets of stirring rods 803 welded to the outer surface of the rotating rod 802, a set of connecting plates 804 fixedly installed on the surface of the rotating rod 802, and scrapers 805 fixedly installed between the set of connecting plates 804.

[0031] In this embodiment, the drive motor 801 is fixed to the bottom of the top plate 901. After starting, it drives the rotating rod 802 at the output shaft to rotate at high speed, thereby driving the three sets of stirring rods 803 welded to the outer surface of the rotating rod 802 to rotate together. The stirring rods 803 stir the liquid chemicals in the cavity 3 in all directions, so that the different components are fully mixed. At the same time, the scraper 805 fixed between the connecting plates 804 on the surface of the rotating rod 802 rotates synchronously with the rotating rod 802. One end of the scraper 805 is tightly attached to the inner wall of the cavity 3, scraping off the chemicals attached to the inner wall of the cavity 3 to avoid sedimentation and wall hanging.

[0032] In this embodiment, the design of the stirring assembly 8 greatly improves the uniformity and efficiency of mixing liquid chemicals; the three sets of stirring rods 803 are spirally distributed, which can form a three-dimensional stirring flow field in the cavity 3, ensuring the uniform concentration of liquid chemicals and providing quality assurance for subsequent uniform addition; the scraper 805 continuously scrapes off the deposits on the inner wall of the cavity 3, preventing chemical residues from deteriorating, reducing material waste, and reducing the frequency of cleaning and maintenance.

[0033] In summary, this uniform liquid chemical addition device, through the setting of the sealing component 9, uses an electric push rod 903 to drive the cover plate 904, and in conjunction with the fluororubber sealing gasket 905, to achieve automatic opening, closing and sealing of the inlet, avoiding the risk of leakage caused by manual operation, and complying with OSHA hazardous chemical handling procedures; at the same time, the three sets of spirally distributed stirring rods 803 form a three-dimensional flow field, improving mixing efficiency and ensuring consistent liquid chemical concentration, providing quality assurance for subsequent uniform addition; the scraper 805 continuously scrapes off the adhering substances on the inner wall of the cavity 3, preventing chemical residue and deterioration, reducing material waste, and reducing the frequency of cleaning and maintenance.

[0034] Furthermore, the liquid flow is driven by controlling the peristaltic pump 4 inside the cavity 3. The peristaltic pump 4 periodically squeezes the hose through rollers to pump the liquid out of the storage tank 1. The pumped liquid is transported through the delivery pipe 5 at the bottom of the storage tank 1. The flow meter 6 on the delivery pipe 5 monitors the liquid flow rate in real time and feeds the data back to the control system 2. The control system 2 compares and analyzes the preset flow rate value with the data fed back by the flow meter 6, and dynamically adjusts the speed of the peristaltic pump 4 through a PID algorithm to ensure stable liquid flow.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, including an element by a statement does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for uniformly adding liquid chemicals, comprising a storage tank (1), characterized in that: A control system (2) is fixedly installed on the surface of the storage tank (1). A cavity (3) is opened inside the storage tank (1). A peristaltic pump (4) is fixedly installed inside the cavity (3). A conveying pipe (5) is fixedly installed at the bottom of the storage tank (1). A flow meter (6) is fixedly installed on the surface of the conveying pipe (5). A corrugated pipe (7) is fixedly installed at the end of the conveying pipe (5) away from the storage tank (1). A stirring assembly (8) is fixedly installed inside the storage tank (1). A sealing assembly (9) is fixedly installed inside the storage tank (1) near the top. The sealing assembly (9) includes a top plate (901) welded to the top of the storage tank (1), an installation cavity (902) is provided inside the top plate (901), an electric push rod (903) is fixedly installed inside the installation cavity (902), a cover plate (904) is fixedly installed at the drive end of the electric push rod (903), and a sealing gasket (905) is fixedly installed around the cover plate (904). The stirring assembly (8) includes a drive motor (801) fixedly installed at the bottom of the top plate (901), a rotating rod (802) fixedly installed at the output shaft of the drive motor (801), three sets of stirring rods (803) welded to the outer surface of the rotating rod (802), a set of connecting plates (804) fixedly installed on the surface of the rotating rod (802), and scrapers (805) fixedly installed between the set of connecting plates (804).

2. The device for uniformly adding liquid chemicals according to claim 1, characterized in that: The outlet of the peristaltic pump (4) is fixedly connected to the inlet of the delivery pipe (5). The cavity (3), the peristaltic pump (4) and the delivery pipe (5) are interconnected, and sealing flanges are provided at the connection points.

3. The device for uniformly adding liquid chemicals according to claim 1, characterized in that: The storage tank (1) is provided with a feed inlet at the top, and the inner wall of the feed inlet is in contact with a sealing gasket (905), which is made of fluororubber.

4. The device for uniformly adding liquid chemicals according to claim 1, characterized in that: Each set of stirring rods (803) consists of three rods, and one end of the scraper (805) is in contact with the inner wall of the cavity (3).

5. The device for uniformly adding liquid chemicals according to claim 1, characterized in that: The surface of the control system (2) is embedded with a control panel, and the control panel is electrically connected to the peristaltic pump (4), flow meter (6), electric push rod (903) and drive motor (801) through wires.

6. The device for uniformly adding liquid chemicals according to claim 1, characterized in that: The storage tank (1) is fixedly equipped with three support legs at the bottom, and the bottom of each of the three support legs is provided with an anti-slip pad.

7. The device for uniformly adding liquid chemicals according to claim 1, characterized in that: The three sets of stirring rods (803) and connecting plates (804) are spirally distributed in the cavity (3). A rubber strip is fixedly installed on one side of the scraper (805), and the rubber strip is in contact with the inner wall of the cavity (3).

8. The device for uniformly adding liquid chemicals according to claim 2, characterized in that: The cavity (3) is circular, and the cover plate (904) is adapted to the shape of the feed inlet.

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