Sealing reagent tank

Abstract

The utility model relates to sewage treatment, in particular to a sealed reagent tank, which comprises a cuboid polytetrafluoroethylene tank body, and is different from the prior art in that a plurality of cylindrical cavities which are used for containing different reagents and are provided with open upper ends are vertically arranged on the polytetrafluoroethylene tank body, a reagent outlet is arranged at the lowest position of the lower end of each cylindrical cavity, and the upper end of each cylindrical cavity is open. The upper end of each cylindrical cavity is in threaded connection with a polytetrafluoroethylene cover, a screw hole is formed in the upper end of each polytetrafluoroethylene cover, an unthreaded hole with the small diameter is formed in the bottom of each screw hole, a latex duckbill valve is arranged in each unthreaded hole, and a polytetrafluoroethylene inner hexagonal stud is screwed into each screw hole. And an air hole is formed in the polytetrafluoroethylene inner hexagonal stud along the axial direction. Compared with the prior art, the reagent adding and replacing process is simplified, and the operation complexity and the pollution risk are reduced.

Description

Technical Field

[0001] The utility model relates to sewage treatment, and specifically to a sealed reagent tank. Background Art

[0002] It is a common operation for a sewage enrichment instrument to use volatile reagents such as acids, activators, eluents, and stripping agents. These reagents are usually contained in reagent tanks and pumped to corresponding treatment components through a pipeline system. During the pumping process, the reduction of the solvent in the tank may lead to the formation of a negative pressure state. To balance the pressure, ventilation holes or gaps are usually provided on the tank lid, so that the chamber formed by the tank lid and the tank body communicates with the outside world, forming an unsealed chamber. Although this design helps to balance the pressure, it also brings a series of problems.

[0003] Firstly, the volatile solvent volatilizes to the outside through the ventilation holes or gaps, which not only causes environmental pollution, but also may cause changes in the reagent dosage or components, affecting the effect of sewage treatment. For example, in some treatment processes, the volatilization of the mobile phase solvent of the stripping agent may lead to a change in the mobile phase ratio, thereby affecting the elution intensity and ultimately the enrichment effect. In addition, the volatilized reagent may pose a threat to the health of operators, especially in a closed or poorly ventilated environment.

[0004] The prior art, such as the one-way valve sealed bottle cap described in CN211996934U, although adopts the one-way valve sealing structure technology to achieve zero volatilization of the liquid in the reagent bottle, still has some limitations. For example, when adding reagents, it is necessary to first evacuate the pipeline, which not only increases the complexity of the operation, but also may cause pipeline contamination. In addition, when the cover sleeve is removed, the cover core is in a free state and is also easily contaminated. In a multi-reagent application scenario, the individual installation and management of each reagent bottle are also relatively cumbersome. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model aims to provide an improved sealed reagent tank to solve the above problems or one of them, and improve the efficiency and safety in the sewage treatment process. Therefore, the technical solution adopted by the utility model is as follows:

[0006] A sealed reagent tank includes a cuboid-shaped polytetrafluoroethylene tank body. Different from the prior art, a plurality of cylindrical cavities for containing different reagents and open at the upper ends are vertically opened on the polytetrafluoroethylene tank body. A reagent outlet is opened at the lowest position at the lower end of each cylindrical cavity. A polytetrafluoroethylene cover is screwed to the upper end of each cylindrical cavity. A screw hole is opened at the upper end of each polytetrafluoroethylene cover. A small-diameter smooth hole is opened at the bottom of the screw hole. A latex duckbill valve is placed in the smooth hole. A polytetrafluoroethylene internal hexagonal screw is screwed into the screw hole. An air hole is axially opened in the polytetrafluoroethylene internal hexagonal screw.

[0007] Furthermore, the polytetrafluoroethylene cover includes a threaded portion and an abutting portion. In the middle of the upper end surface of the abutting portion, a twisting portion extends upward. The diameter of the threaded portion is greater than or equal to the diameter of the cylindrical cavity, and the diameter of the abutting portion is greater than or equal to the diameter of the threaded portion.

[0008] Furthermore, a latex sealing ring is sleeved at the junction of the threaded portion and the abutting portion.

[0009] Furthermore, a sensor mounting hole is opened near the lower end of each cylindrical cavity, and a liquid level sensor is installed in each sensor mounting hole.

[0010] Furthermore, a plurality of tank fixing holes are opened on the polytetrafluoroethylene tank body between adjacent cylindrical cavities.

[0011] Furthermore, an identification for distinguishing different reagents is provided on the polytetrafluoroethylene tank body corresponding to each cylindrical cavity.

[0012] Furthermore, the latex duckbill valve includes a tube body with an outer diameter less than or equal to the inner diameter of the light hole. The lower end of the tube body is a closed end, and a single slit or a cross slit is opened on the closed end. The upper end of the tube body extends outward to form a clamping edge, and the diameter of the clamping edge is less than or equal to the inner diameter of the screw hole.

[0013] Furthermore, the lower end of the polytetrafluoroethylene hexagon socket head cap screw abuts against the upper end of the clamping edge.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] 1. The sealing performance of the reagent tank is improved, effectively preventing the leakage of volatile reagents and reducing environmental pollution.

[0016] 2. The reagent addition and replacement process is simplified, reducing the operation complexity and pollution risk.

[0017] 3. By centrally managing multiple reagents, the efficiency and operation convenience in the sewage treatment process are improved.

[0018] 4. The design takes into account the safety of operators and reduces the impact of volatile reagents on health. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the utility model.

[0020] Figure 2 It is a schematic structural diagram of the utility model from another perspective.

[0021] Figure 3 It is a schematic structural diagram of the polytetrafluoroethylene cover of the utility model.

[0022] Figure 4 This is a cross-sectional view of the present utility model.

[0023] Figure 5 is Figure 4 a partial enlarged view of part A in

[0024] Reference numerals in the figure: polytetrafluoroethylene tank body - 701, cylindrical cavity - 702, reagent outlet - 704, polytetrafluoroethylene cover - 703, threaded part - 7031, abutting part - 7032, torsion part - 7033, screw hole - 705, smooth hole - 706, latex duckbill valve - 707, pipe body - 7071, clamping edge - 7072, polytetrafluoroethylene internal hexagonal stud - 708, air hole - 709, latex sealing ring - 710, liquid level sensor - 711, tank body fixing hole - 712, identification - 713. Detailed implementation manners

[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 thus cannot be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "communicated" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Such as Figures 1-5A sealed reagent tank as shown includes a rectangular poly-tetrafluoroethylene tank body 701. Four cylindrical cavities 702 that are vertically opened on the poly-tetrafluoroethylene tank body 701 for holding different reagents and are open at the upper ends are provided. A reagent outlet 704 is opened at the lowest position at the lower end of each cylindrical cavity 702. A poly-tetrafluoroethylene cover 703 is screwed to the upper end of each cylindrical cavity 702. A screw hole 705 is opened at the upper end of each poly-tetrafluoroethylene cover 703. A smaller-diameter smooth hole 706 is opened at the bottom of the screw hole 705. A latex duckbill valve 707 is inserted into the smooth hole 706. A poly-tetrafluoroethylene internal hexagonal screw 708 is screwed into the screw hole 705. An air hole 709 is axially opened in the poly-tetrafluoroethylene internal hexagonal screw 708. The use of a rectangular poly-tetrafluoroethylene tank body provides good chemical stability and corrosion resistance. Multiple cylindrical cavities for holding different reagents are vertically opened on the poly-tetrafluoroethylene tank body to realize the centralized management and use of multiple reagents. A reagent outlet is opened at the lowest position at the lower end of each cylindrical cavity to facilitate the precise delivery of reagents. A poly-tetrafluoroethylene cover is screwed to the upper end of each cylindrical cavity to ensure the sealing of each reagent cavity. A screw hole is opened at the upper end of the poly-tetrafluoroethylene cover, and a smaller-diameter smooth hole is opened at the bottom of the screw hole, with a latex duckbill valve inserted to achieve one-way flow and prevent volatilization. A poly-tetrafluoroethylene internal hexagonal screw is screwed into the screw hole, and an air hole is axially opened in the internal hexagonal screw to ensure gas exchange while preventing liquid leakage.

[0029] In another preferred embodiment, the poly-tetrafluoroethylene cover 703 includes a threaded portion 7031 and an abutting portion 7032. A twisting portion 7033 extends upward from the middle of the upper end surface of the abutting portion 7032. The diameter of the threaded portion 7031 is greater than or equal to the diameter of the cylindrical cavity 702. The diameter of the abutting portion 7032 is greater than or equal to the diameter of the threaded portion 7031. Designing the diameter of the threaded portion 7031 to be greater than or equal to the diameter of the cylindrical cavity 702 has the advantage of making the tank opening large enough to facilitate the operator to fill reagents into the tank. The abutting portion is the part where the cover directly contacts the tank body, and its diameter is designed to be greater than or equal to the diameter of the threaded portion 7031 to ensure good sealing performance and structural stability. Especially, the sealing performance is better after a latex sealing ring 710 is sleeved.

[0030] In another preferred embodiment, a sensor mounting hole is opened near the lower end of each cylindrical cavity 702, and a liquid level sensor 711 is installed in each sensor mounting hole. The function of these sensors is to monitor the liquid level state of the reagents in each cylindrical cavity 702 in real time, helping the operator or the automatic control system to understand the remaining amount of reagents and replenish or replace them in a timely manner. The design of the sensor mounting hole makes the installation, maintenance, or replacement of the liquid level sensor 711 simple and fast.

[0031] In another preferred embodiment, a plurality of tank fixing holes 712 are formed in the polytetrafluoroethylene tank body 701 between adjacent cylindrical cavities 702. By forming the fixing holes in non-critical areas, the structural integrity of the tank body 701 is maintained, ensuring that the overall structural strength of the tank body 701 is not affected. Penetration of the cylindrical cavity 702 is avoided, which means that the holes do not penetrate into the space for containing reagents, thus maintaining the sealing and independence of each cylindrical cavity.

[0032] In another preferred embodiment, identification marks 713 for differentiating different reagents are provided on the polytetrafluoroethylene tank body 701 corresponding to each cylindrical cavity 702. These identification marks may include, but are not limited to, reagent names, chemical formulas, hazard signs or other relevant information to ensure that operators can quickly identify and correctly use each reagent.

[0033] In another preferred embodiment, the latex duckbill valve 707 includes a tube body 7071 whose outer diameter is less than or equal to the inner diameter of the light hole 706, ensuring that it can be adapted and correctly installed in the threaded hole 705. The lower end of the tube body 7071 is a closed end, and a single slit or a cross slit is formed in the closed end. The slit formed in the closed end allows the reagent to flow out when needed, while controlling the flow rate and direction. The upper end of the tube body 7071 extends outward to form a clamping edge 7072, and the diameter of the clamping edge 7072 is less than or equal to the inner diameter of the threaded hole 705, ensuring that it can be tightly fitted and fixed in place. The lower end of the polytetrafluoroethylene socket head cap screw 708 abuts against the upper end of the clamping edge 7072 to ensure the stability and sealing of the valve.

[0034] Although the present invention has been described in detail with general descriptions and specific embodiments above, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

[0035] What the present invention does not elaborate in detail is the prior art or common general knowledge in the art.

Claims

1. A sealed reagent tank, comprising a rectangular polytetrafluoroethylene tank body (701), characterized in that: A plurality of cylindrical cavities (702) for containing different reagents and open at the upper end are vertically provided on the polytetrafluoroethylene tank body (701), a reagent outlet (704) is provided at the lowest point of the lower end of each cylindrical cavity (702), a polytetrafluoroethylene cover (703) is screwed to the upper end of each cylindrical cavity (702), a screw hole (705) is provided at the upper end of each polytetrafluoroethylene cover (703), a light hole (706) with a smaller diameter is provided at the bottom of the screw hole (705), a latex duckbill valve (707) is inserted into the light hole (706), a polytetrafluoroethylene hexagonal stud (708) is screwed into the screw hole (705), and an air hole (709) is provided in the polytetrafluoroethylene hexagonal stud (708) along the axial direction.

2. A sealed reagent tank according to claim 1, characterized in that: The polytetrafluoroethylene cover (703) comprises a threaded portion (7031) and an abutment portion (7032), wherein the middle portion of the upper end surface of the abutment portion (7032) extends upward to form a torsion portion (7033), the diameter of the threaded portion (7031) is greater than or equal to the diameter of the cylindrical cavity (702), and the diameter of the abutment portion (7032) is greater than or equal to the diameter of the threaded portion (7031).

3. A sealed reagent tank according to claim 2, characterized in that: A latex sealing ring (710) is sleeved at the intersection of the threaded portion (7031) and the abutting portion (7032).

4. A sealed reagent tank according to claim 1, characterized in that: A sensor installation hole is provided near the lower end of each cylindrical cavity (702), and a liquid level sensor (711) is installed in each sensor installation hole.

5. A sealed reagent tank according to claim 1, characterized in that: A plurality of tank body fixing holes (712) are provided on the polytetrafluoroethylene tank body (701) between adjacent cylindrical cavities (702).

6. A sealed reagent tank according to claim 1, characterized in that: A mark (713) for distinguishing different reagents is provided on the polytetrafluoroethylene tank (701) corresponding to each cylindrical cavity (702).

7. A sealed reagent tank according to claim 1, characterized in that: The latex duckbill valve (707) includes a tube body (7071) whose outer diameter is less than or equal to the inner diameter of the light hole (706), the lower end of the tube body (7071) is a closed end, and a straight slit or a cross slit is provided on the closed end, and the upper end of the tube body (7071) extends outward to form a clamping edge (7072), and the diameter of the clamping edge (7072) is less than or equal to the inner diameter of the screw hole (705).

8. A sealed reagent tank according to claim 7, characterized in that: The lower end of the polytetrafluoroethylene hexagonal screw (708) abuts against the upper end of the clamping edge (7072).

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