Phosphate injection device structure

Abstract

The application discloses a phosphate dispensing device structure and belongs to the field of laboratory automation equipment. The dispensing device structure comprises a liquid storage tank, a dispensing pump controlled by a PLC controller device and communicated with the liquid storage tank, a dispensing pipeline fixedly installed on an output port of the dispensing pump, a dispensing head fixedly installed on the dispensing pipeline and away from the dispensing pump, and a heat preservation mechanism arranged on the liquid storage tank and the dispensing pipeline. The heat preservation mechanism comprises a first heating part arranged on an outer side wall of the liquid storage tank and attached to the outer side wall of the liquid storage tank. The heat preservation mechanism further comprises a second heating part arranged on an outer side wall of the dispensing pipeline and wrapped on the dispensing pipeline. The dispensing device structure heats and preserves the liquid in the liquid storage tank and the dispensing pipeline, so that the solution is always in a suitable dissolving state, the low-temperature crystallization phenomenon is avoided, and the clogging probability of the dispensing head is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of laboratory automation equipment technology, specifically a phosphate dispensing device structure. Background Technology

[0002] Phosphate buffer is a solution composed of sodium dihydrogen phosphate and disodium hydrogen phosphate, used for sample dilution. Sodium dihydrogen phosphate is the more acidic component. The solution should be stored below 25°C and protected from light; long-term storage may cause phosphate crystals to precipitate. Buffer solutions stored at low temperatures should be reconstituted in a 37°C water bath before use. This system has limited buffering capacity against strong acids and bases.

[0003] As can be seen from the above characteristics of phosphate buffer, phosphate solutions are widely used in biochemical detection. However, high-concentration phosphates are prone to crystallization. Even after reconstitution, if the operation is carried out at low temperature, crystallization can easily occur, leading to blockage of the dispensing line and affecting dispensing efficiency.

[0004] Therefore, this application provides a phosphate dispensing device structure to solve the above-mentioned problems. Utility Model Content

[0005] This application provides a phosphate dispensing device structure, which aims to solve the problems mentioned in the background art, such as the blockage caused by crystallization of phosphate buffer solution in existing dispensing equipment.

[0006] To achieve the above objectives, this application provides the following technical solution: a phosphate dispensing device structure, comprising a storage tank, a dispensing pump controlled by a PLC controller connected to the storage tank, a dispensing pipeline fixedly installed at the output port of the dispensing pump, a dispensing head fixedly installed at the end of the dispensing pipeline away from the dispensing pump, and a heat preservation mechanism disposed on the storage tank and the dispensing pipeline.

[0007] The heat preservation mechanism includes a first heating part disposed on the outer wall of the liquid storage tank, the first heating part being attached to the outer wall of the liquid storage tank;

[0008] The heat preservation mechanism also includes a second heating part disposed on the outer wall of the dispensing pipeline, the second heating part being wrapped around the dispensing pipeline;

[0009] The control terminals of the first and second heating sections are electrically connected to a temperature controller controlled by a PLC controller. In use, the PLC controller maintains the temperature of the first and second heating sections at 30-40°C, thereby heating and maintaining the liquid in the storage tank and dispensing pipeline. This ensures the solution remains in a suitable dissolving state, preventing low-temperature crystallization and effectively reducing the probability of clogging the dispensing head.

[0010] Preferably, in order to heat the solution, the first heating element is specifically an electric heating film, and several first heating elements are distributed in a ring array on the outer wall of the storage tank to ensure that the solution is in a good dissolution state and to avoid crystallization.

[0011] Preferably, to avoid damage to the pipeline, the second heating part is specifically an electric heating tape. The second heating part is spirally coiled on the dispensing pipeline, and the spiral spacing of each layer of the second heating part is greater than 5cm. The spacing design effectively avoids heat concentration and damage to the pipeline, ensuring safety and stability.

[0012] Preferably, to avoid crystallization adhering to the wall, the dispensing head has a tubular structure, and the end of the dispensing head away from the dispensing pipeline has a tapered constriction structure with a cone angle of 15°-25°. The inner wall of the dispensing head is provided with a hydrophobic coating to further prevent clogging.

[0013] Preferably, to prevent splashing, a support rod is fixedly installed at one end of the dispensing head that connects to the dispensing pipeline. A thin rod inserted into the dispensing pipeline is fixedly installed on the support rod. Three fan-shaped blades adapted to the dispensing pipeline are fixedly installed at the end of the thin rod away from the support rod. The three fan-shaped blades are arranged in layers from top to bottom on the thin rod and distributed circumferentially along the inner wall of the dispensing pipeline, effectively avoiding splashing of corrosive liquids and improving the safety of liquid dispensing.

[0014] The dispensing device uses a PLC controller to control the temperature controller, keeping the temperature of the first and second heating sections between 30-40°C. This heats and keeps the liquid in the storage tank and dispensing pipeline at a suitable dissolution state, preventing low-temperature crystallization and effectively reducing the probability of clogging the dispensing head.

[0015] The dispensing device has a structure in which the end of the dispensing head with fan-shaped blades is inserted into the dispensing pipeline. When the liquid is pumped out by the dispensing pump, it flows through the gaps between the layered fan-shaped blades, reducing the liquid flow rate and effectively preventing the splashing of corrosive liquids, thus improving the safety of the liquid discharge. Attached Figure Description

[0016] Figure 1 A schematic diagram of the outer tube structure of a phosphate dispensing device;

[0017] Figure 2 This is a cross-sectional structural diagram of a phosphate dispensing device.

[0018] Figure 3 A schematic diagram of the dispensing head structure of a phosphate dispensing device;

[0019] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 5 This is an electrical connection block diagram of a phosphate dispensing device.

[0021] In the picture:

[0022] 1. Storage tank; 2. Dispensing pump; 3. Dispensing pipeline; 4. Dispensing head; 41. Hydrophobic coating; 42. Support rod; 43. Thin rod; 44. Fan-shaped plate; 5. Insulation mechanism; 51. First heating section; 52. Second heating section; 53. Temperature controller. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] Example 1

[0025] This embodiment provides a phosphate dispensing device structure, such as... Figure 1-5 As shown, the dispensing device structure includes a storage tank 1, a dispensing pump 2 controlled by a PLC controller connected to the storage tank 1, a dispensing pipeline 3 fixedly installed on the output port of the dispensing pump 2, a dispensing head 4 fixedly installed on the dispensing pipeline 3 at the end away from the dispensing pump 2, and a heat preservation mechanism 5 installed on the storage tank 1 and the dispensing pipeline 3.

[0026] The heat preservation mechanism 5 includes a first heating part 51 disposed on the outer wall of the liquid storage tank 1, and the first heating part 51 is attached to the outer wall of the liquid storage tank 1;

[0027] The heat preservation mechanism 5 also includes a second heating part 52 disposed on the outer wall of the dispensing pipe 3, the second heating part 52 being wrapped around the dispensing pipe 3;

[0028] Temperature controller 53, controlled by a PLC controller device, is electrically connected to the control terminals of the first heating unit 51 and the second heating unit 52.

[0029] In use, the dispensing pump 2 is started by the PLC controller to pump the phosphate solution in the storage tank 1 into the dispensing pipeline 3, and then dispensed through the dispensing head 4 to complete the distribution.

[0030] It should be noted that before dispensing, the temperature controller 53 needs to be controlled by the PLC controller to control the temperature of the first heating part 51 and the second heating part 52 at 30-40℃, so as to heat and keep the liquid in the storage tank 1 and the dispensing pipeline 3, so that the solution is always in a suitable dissolution state, avoids low-temperature crystallization, and effectively reduces the probability of blockage of the dispensing head 4.

[0031] Specifically, the first heating part 51 is an electric heating film, and several first heating parts 51 are arranged in a ring array on the outer wall of the liquid storage tank 1.

[0032] When in use, attach the electric heating film to the surface of the storage tank 1 to heat the solution inside the tank, ensuring that the solution is in a good dissolved state and avoiding crystallization.

[0033] It should be noted that the structure and circuit layout of the electric heating film are existing technologies, and its working principle is common knowledge to those skilled in the art, so there is no need to elaborate. When arranging the film, the appropriate power and area of ​​the material can be selected according to the size of the liquid storage tank 1.

[0034] More specifically, the second heating part 52 is an electric heating tape, which is spirally coiled on the dispensing pipe 3, and the spiral spacing of each layer of the second heating part 52 is greater than 5cm.

[0035] During use, the spirally wound electric heating tape evenly heats the injection pipeline 3, ensuring stability and reliability. The spacing design effectively avoids heat concentration damage to the pipeline, ensuring safety and stability.

[0036] It should be noted that the structure and circuit layout of the electric heating tape are existing technologies, and its working principle is common knowledge to those skilled in the art, so there is no need to elaborate. When arranging the tape, the appropriate power and length of the material can be selected according to the diameter and length of the distribution pipe 3.

[0037] Furthermore, the dispensing head 4 has a tubular structure, and the end of the dispensing head 4 away from the dispensing pipe 3 has a tapered constriction structure with a cone angle of 15°-25°. The inner wall of the dispensing head 4 is provided with a hydrophobic coating 41.

[0038] When in use, the conical design makes the dispensing head 4 more concentrated when dispensing liquid, and the inner wall is coated with a hydrophobic coating 41 made of polytetrafluoroethylene, which reduces the probability of crystals adhering to the wall and thus further avoids clogging.

[0039] Example 2

[0040] Unlike Example 1, excessively rapid liquid dispensing may cause splashing and pose a safety hazard. Therefore, a support rod 42 is fixedly installed on one end of the dispensing head 4 that is connected to the dispensing pipeline 3. A thin rod 43 inserted into the dispensing pipeline 3 is fixedly installed on the support rod 42. Three fan-shaped blades 44 adapted to the dispensing pipeline 3 are fixedly installed on the end of the thin rod 43 away from the support rod 42. The three fan-shaped blades 44 are arranged in layers from top to bottom on the thin rod 43 and distributed circumferentially along the inner wall of the dispensing pipeline 3.

[0041] When in use, insert the end of the dispensing head 4 with the fan-shaped blades 44 into the dispensing pipe 3. When the liquid is pumped out by the dispensing pump 2, it flows through the gaps between the layered fan-shaped blades 44, which reduces the liquid flow rate, effectively avoids the splashing of corrosive liquid, and improves the safety of the liquid output.

[0042] Understandably, the fan-shaped blade 44 not only reduces the liquid flow rate, but also, when the dispensing head 4 is pulled out, the thin rod 43 pulls the fan-shaped blade 44 to scrape the inner wall of the dispensing pipe 3 near the dispensing head 4. When it is pushed out, the inside of the end of the dispensing pipe 3 is cleaned and any crystallized or condensed solution residue is scraped off, which facilitates the next installation and liquid dispensing.

[0043] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A phosphate dispensing device structure, comprising a storage tank (1), a dispensing pump (2) controlled by a PLC controller connected to the storage tank (1), a dispensing pipeline (3) fixedly installed on the output port of the dispensing pump (2), a dispensing head (4) fixedly installed on the dispensing pipeline (3) at one end away from the dispensing pump (2), and a heat preservation mechanism (5) provided on the storage tank (1) and the dispensing pipeline (3), characterized in that: The heat preservation mechanism (5) includes a first heating part (51) disposed on the outer wall of the liquid storage tank (1), the first heating part (51) being attached to the outer wall of the liquid storage tank (1); The heat preservation mechanism (5) further includes a second heating part (52) disposed on the outer wall of the dispensing pipeline (3), the second heating part (52) being wrapped around the dispensing pipeline (3); The control terminals of the first heating unit (51) and the second heating unit (52) are electrically connected to a temperature controller (53) controlled by a PLC controller device.

2. The structure of the phosphate dispensing device according to claim 1, characterized in that: The first heating element (51) is specifically an electric heating film, and several first heating elements (51) are arranged in a ring array on the outer wall of the liquid storage tank (1).

3. The structure of the phosphate dispensing device according to claim 1, characterized in that: The second heating part (52) is specifically an electric heating tape. The second heating part (52) is spirally coiled on the injection pipeline (3). The spiral spacing of each layer of the second heating part (52) is greater than 5cm.

4. The structure of the phosphate dispensing device according to claim 1, characterized in that: The dispensing head (4) has a tubular structure. The end of the dispensing head (4) away from the dispensing pipeline (3) has a tapered constriction structure with a cone angle of 15°-25°. The inner wall of the dispensing head (4) is provided with a hydrophobic coating (41).

5. The structure of a phosphate dispensing device according to claim 4, characterized in that: A support rod (42) is fixedly installed on one end of the dispensing head (4) that is connected to the dispensing pipeline (3). A thin rod (43) inserted into the dispensing pipeline (3) is fixedly installed on the support rod (42). Three fan-shaped pieces (44) adapted to the dispensing pipeline (3) are fixedly installed on the thin rod (43) at the end away from the support rod (42). The three fan-shaped pieces (44) are arranged in layers from top to bottom on the thin rod (43) and distributed circumferentially along the inner wall of the dispensing pipeline (3).

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