A plastic storage tank that is easy to sample and test

Abstract

This utility model discloses a plastic storage tank for easy sampling and testing. The tank includes a delivery pipe on one side, with multiple sampling tubes fixedly connected to its outer surface. One end of each sampling tube penetrates the plastic storage tank and extends into its interior. A sampling valve is fixedly connected to the outer surface of each sampling tube. An annular threaded seat is fixedly connected to the outer surface of the bottom end of each sampling tube, and a sampling vessel is threadedly connected to the inner wall of the annular threaded seat. This utility model, by distributing multiple sampling tubes at different depths within the plastic storage tank, in conjunction with the sampling valve, and with the sampling vessel installed at the bottom of the annular threaded seat, can obtain liquid samples from different layers according to sampling needs. This solves the problem of compositional differences in liquids caused by gravity and storage time, comprehensively reflecting the overall quality of the liquid within the tank, and making the test results more accurate and reliable.

Description

Technical Field

[0001] This utility model relates to the field of plastic storage tanks, and in particular to a plastic storage tank that is easy to sample and test. Background Technology

[0002] Plastic storage tanks are large containers made from thermoplastic plastics such as polyethylene and polypropylene through processes such as rotational molding and blow molding. They have advantages such as being lightweight and strong, corrosion-resistant, having good insulation, and being inexpensive. They are widely used in industries such as chemical, food, and pharmaceutical to store various liquid and powder materials.

[0003] Currently, when storing liquids in plastic storage tanks, it is necessary to sample and test the stored liquids. Sampling is typically done from the bottom outlet. However, due to factors such as gravity and storage time, the composition, concentration, and other physicochemical properties of the liquid vary at different depths within the tank. This makes it difficult to obtain raw material samples from different depths inside the tank, failing to comprehensively reflect the overall quality of the liquid and resulting in poor accuracy of the sampling and testing results. Therefore, we propose a plastic storage tank that facilitates sampling and testing to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a plastic storage tank that facilitates sampling and testing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A plastic storage tank for easy sampling and testing includes a plastic storage tank, a delivery pipe on one side of the plastic storage tank, a plurality of sampling tubes fixedly connected to the outer surface of the delivery pipe, one end of each sampling tube penetrating the plastic storage tank and extending into the interior of the plastic storage tank, a sampling valve fixedly connected to the outer surface of each sampling tube, and an annular threaded seat fixedly connected to the outer surface of the bottom end of the sampling tube, with a sampling vessel threadedly connected to the inner wall of the annular threaded seat.

[0006] In a further embodiment, a variable frequency motor is fixedly installed on the bottom surface of the plastic storage tank, a stirring rod is fixedly installed on the output end of the variable frequency motor, a plurality of stirring blades are fixedly connected to the outer surface of the stirring rod, a sealed bearing is fixedly embedded in the inner bottom wall of the plastic storage tank, and the outer surface of the stirring rod is fixedly connected to the inner ring of the sealed bearing.

[0007] In a further embodiment, the upper surface of the plastic storage tank is fixedly connected to a filling pipe, a sealing plug is provided above the filling pipe, the bottom surface of the plastic storage tank is fixedly connected to a discharge pipe, and the outer surface of the discharge pipe is fixedly connected to a discharge valve.

[0008] In a further embodiment, a breather valve is fixedly connected to the upper surface of the plastic storage tank, and multiple support seats are fixedly connected to the bottom surface of the plastic storage tank.

[0009] In a further embodiment, the upper surface of the sampling vessel is provided with an array of vent holes, the outer surface of the sampling vessel is fixedly inlaid with a liquid level observation plate, and the outer surface of the plastic storage tank is fixedly inlaid with a transparent observation plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes multiple sampling tubes distributed at different depths within a plastic storage tank, along with a sampling valve and a sampling vessel mounted on the bottom of a ring-shaped threaded seat. This allows for the acquisition of liquid samples from different layers according to sampling needs, addressing the issue of compositional differences caused by gravity and storage time. It comprehensively reflects the overall quality of the liquid within the tank, resulting in more accurate and reliable test results. Furthermore, during discharge, a variable frequency motor drives the rotation of the stirring rod and blades, preventing prolonged sedimentation and stratification of the liquid, ensuring uniform composition of the discharged liquid, and avoiding the impact of localized concentration differences on subsequent production and use. Attached Figure Description

[0011] Figure 1 A three-dimensional structural diagram of a plastic storage tank viewed from the front for easy sampling and testing. Figure 2 A cross-sectional view of a plastic storage tank taken from the front for easy sampling and testing; Figure 3 A bottom-view cross-sectional view of a plastic storage tank for easy sampling and testing; Figure 4 A bottom-view cross-sectional view of a sampling vessel for a plastic storage tank, used for convenient sampling and testing.

[0012] In the diagram: 1. Plastic storage tank; 2. Delivery pipe; 3. Sampling pipe; 4. Sampling valve; 5. Annular threaded seat; 6. Sampling vessel; 7. Liquid level observation plate; 8. Vent; 9. Variable frequency motor; 91. Sealed bearing; 92. Stirring rod; 93. Stirring blade; 10. Discharge pipe; 11. Discharge valve; 12. Injection pipe; 13. Sealing plug plate; 14. Breather valve; 15. Transparent observation plate; 16. Support base. Detailed Implementation

[0013] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] 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.

[0016] Please see Figures 1-4 In this utility model, a plastic storage tank that facilitates sampling and testing includes a plastic storage tank 1. A conveying pipe 2 is provided on one side of the plastic storage tank 1. Multiple sampling pipes 3 are fixedly connected to the outer surface of the conveying pipe 2. One end of each sampling pipe 3 penetrates the plastic storage tank 1 and extends into the interior of the plastic storage tank 1. A sampling valve 4 is fixedly connected to the outer surface of each sampling pipe 3. An annular threaded seat 5 is fixedly connected to the outer surface of the bottom end of the sampling pipe 3. A sampling vessel 6 is threadedly connected to the inner wall of the annular threaded seat 5. By using multiple sampling pipes 3, combined with the sampling valve 4, the annular threaded seat 5, and the sampling vessel 6, sampling can be performed by screwing on the sampling vessel 6 and opening the sampling valve 4 to obtain liquid samples from different layers. This breaks through the limitation of traditional single bottom sampling in storage tanks and solves the problem of uneven composition of liquid caused by gravity and storage time.

[0017] In a further embodiment, a variable frequency motor 9 is fixedly installed on the bottom surface of the plastic storage tank 1, and a stirring rod 92 is fixedly installed at the output end of the variable frequency motor 9. Multiple stirring blades 93 are fixedly connected to the outer surface of the stirring rod 92. A sealed bearing 91 is fixedly embedded in the inner bottom wall of the plastic storage tank 1. The outer surface of the stirring rod 92 is fixedly connected to the inner ring of the sealed bearing 91. By driving the stirring rod 92 to rotate through the variable frequency motor 9, the stirring blades 93 can be driven to stir the liquid. The setting of the sealed bearing 91 can ensure that the stirring rod 92 rotates stably, effectively preventing the liquid from settling and separating after a long period of time, and making the output composition uniform.

[0018] In a further embodiment, a filling pipe 12 is fixedly connected to the upper surface of the plastic storage tank 1, and a sealing plug plate 13 is provided above the filling pipe 12. A discharge pipe 10 is fixedly connected to the bottom surface of the plastic storage tank 1, and a discharge valve 11 is fixedly connected to the outer surface of the discharge pipe 10. A breather valve 14 is fixedly connected to the upper surface of the plastic storage tank 1. Multiple support seats 16 are fixedly connected to the bottom surface of the plastic storage tank 1. An array of vent holes 8 are opened on the upper surface of the sampling vessel 6, and a liquid level indicator is fixedly embedded on the outer surface of the sampling vessel 6. The outer surface of the plastic storage tank 1 is fixedly inlaid with a transparent observation plate 7. It is used for the addition and storage protection of liquid materials through the injection pipe 12 and the sealing plug plate 13. The liquid output can be controlled by the discharge pipe 10 and the discharge valve 11. The breather valve 14 can balance the air pressure inside the tank to ensure the safety of the plastic storage tank 1. The support base 16 will stabilize the plastic storage tank 1. Through the vent hole 8 on the sampling vessel 6 and the liquid level observation plate 7, it is convenient to observe the liquid level status during liquid sampling and the gas discharge during sampling in real time.

[0019] The working principle of this utility model is as follows: When sampling is required, the sampling vessel 6 is screwed onto the bottom end of the sampling tube 3 through the annular threaded seat 5, and the sampling valve 4 on the corresponding sampling tube 3 is opened, allowing the liquid to flow into the interior of the sampling vessel 6. Since the sampling tubes 3 are distributed at different depths, liquid samples from different layers can be obtained respectively. Then the sampling vessel 6 can be removed for testing. In addition, when discharging, the variable frequency motor 9 is started to drive the stirring rod 92 and stirring blade 93 to rotate, which can stir the liquid in the tank and avoid the sedimentation and stratification of components due to long-term standing, making the liquid material more uniform after discharge.

[0020] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

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