Automatic water replenishing device for measuring pressurized absorption amount of super absorbent resin

Abstract

The utility model provides an automatic water replenishing device for measuring the pressurized absorption amount of super absorbent resin, and solves the problems that the design of a shallow base plate has defects, an automatic water replenishing structure is lacked, normal saline supplementation depends on manual operation and is influenced by human factors, and the working efficiency is high in the prior art. The conditions of untimely supplement and inaccurate liquid level control are easy to occur, and the detection efficiency and the accuracy of a test result are low. The utility model provides an automatic water refilling device for measuring the pressurized absorption amount of super absorbent resin, which comprises a shallow base plate, a liquid storage tank, an upper cover and a hole plug, the liquid storage tank is arranged on the shallow base plate, and the liquid storage tank is of a hollow structure with an opening at the upper end and is detachably and hermetically connected with the upper cover; a water outlet hole is formed in the lower portion of the liquid storage tank and is detachably connected with the hole plug in a sealed mode. Through the synergistic effect of the liquid storage tank and the shallow base plate, automatic supply of normal saline is achieved, it is guaranteed that the liquid level in the shallow base plate is constant in the testing process, and the testing accuracy and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high water-absorbing resin determination, in particular to an automatic water replenishing device for measuring the pressure absorption capacity of high water-absorbing resin. Background Art

[0002] Superabsorbent polymer (hereinafter referred to as SAP) is a functional polymer material containing strong hydrophilic groups such as carboxyl and hydroxyl groups, and having a certain degree of crosslinking and network structure. This material is widely used in sanitary products, medical treatment, agriculture and forestry, industry, civil engineering, waste liquid solidification treatment, food preservation, drying and other fields. Among them, the applications in sanitary products include baby diapers, adult incontinence products, feminine hygiene products, medical surgical pads and pet hygiene products. The sanitary products field pays particular attention to the performance index of "pressure absorption capacity" of superabsorbent polymer products.

[0003] At present, for the determination of the pressure absorption capacity of superabsorbent polymer products, it is mainly based on "GB / T 22875-2018 High Absorbent Resins for Diapers and Sanitary Napkins - Appendix I Determination of Pressure Absorption Capacity". The measuring equipment used in this standard includes: a pressure applying device and an absorption container. Among them, the pressure applying device includes:

[0004] 1. Fixed plastic round barrel: The inner diameter is required to be 60.0 mm ± 0.2 mm, the height is required to be 50.0 mm ± 0.5 mm, and a 36 μm nylon mesh is adhered to the bottom surface for placing SAP samples.

[0005] 2. Piston (applying a pressure of 2068 Pa): It is a cylindrical structure composed of a movable plastic round barrel and a metal weight, with an outer diameter of 60 mm, and is in axial sliding fit with the fixed plastic round barrel.

[0006] The absorption container includes:

[0007] Shallow bottom plate: The inner diameter is 85 mm, the height is 20 mm, and a metal wire is adhered to the bottom for supporting the fixed plastic round barrel and serving as a reference for measuring the liquid level.

[0008] According to the determination steps specified in the standard, physiological saline needs to be added into the shallow bottom plate until the liquid level just exceeds the metal wire in the shallow bottom plate.

[0009] The applicant has found that the prior art has at least the following technical problems:

[0010] The design of the shallow chassis has defects and lacks an automatic water replenishment structure. The replenishment of physiological saline requires manual operation. Since some SAP samples have strong absorption capacity, they will quickly absorb the physiological saline on the liquid surface during the detection process, resulting in a decrease in the liquid level of the physiological saline in the shallow chassis and an inability to continuously contact the SAP samples. If the physiological saline is not replenished into the shallow chassis in time at this time, it will cause deviations in the test results of the SAP samples to be measured within the specified time, and the test results cannot be accurately obtained.

[0011] Moreover, during the process of manually replenishing physiological saline, affected by human factors, it is impossible to ensure that the liquid levels of the replenished physiological saline are the same each time. The inconsistency of the liquid levels will cause changes in the liquid pressure, ultimately resulting in inaccurate test results.

[0012] In view of this, the present utility model is specifically proposed. Summary of the Utility Model

[0013] The purpose of the present utility model is to provide an automatic water replenishment device for measuring the pressure absorption capacity of superabsorbent resins, so as to solve the technical problems existing in the prior art, such as the design of the shallow chassis has defects, lacks an automatic water replenishment structure, the replenishment of physiological saline depends on manual operation, is affected by human factors, is prone to the situations of untimely replenishment and inaccurate liquid level control, and has low detection efficiency and test result accuracy. The many technical effects that can be produced by the preferred technical solutions provided by the present utility model are described in detail below.

[0014] To achieve the above purpose, the present utility model provides the following technical solutions:

[0015] An automatic water replenishment device for measuring the pressure absorption capacity of superabsorbent resins provided by the present utility model includes a shallow chassis, a liquid storage tank, an upper cover, and a hole plug. The liquid storage tank is arranged on the shallow chassis. The liquid storage tank is a hollow structure with an open upper end and is detachably and sealingly connected to the upper cover. A water outlet hole is opened at the lower part of the liquid storage tank and is detachably and sealingly connected to the hole plug.

[0016] Preferably, metal wires are arranged on the shallow chassis. The number of the metal wires is two and they are arranged in parallel.

[0017] Preferably, the upper end of the water outlet hole is higher than the upper end of the metal wire.

[0018] Preferably, a sealing ring is arranged on the outer peripheral edge of the upper cover.

[0019] Preferably, a hand-held part is arranged on the upper end surface of the upper cover.

[0020] Preferably, the water outlet hole is located at the connection between the liquid storage tank and the shallow chassis.

[0021] Preferably, the shallow chassis and the liquid storage tank are integrally formed.

[0022] Preferably, the inner diameter of the shallow chassis is 130 mm - 170 mm, and the height is 10 mm - 50 mm;

[0023] The inner diameter of the liquid storage tank is 30 mm - 70 mm, and the volume is 80 mL - 120 mL;

[0024] The length of the water outlet hole is 8 mm - 12 mm, and the height is 4 - 6 mm;

[0025] The diameter of the metal wire is 2 mm.

[0026] The preferred technical solution of the present utility model can at least further produce the following technical effects:

[0027] The present utility model effectively avoids the technical problems existing in the prior art, such as the defective design of the shallow chassis, the lack of an automatic water replenishment structure, the dependence on manual operation for the replenishment of physiological saline, being affected by human factors, prone to the situations of untimely replenishment and inaccurate liquid level control, and low detection efficiency and test result accuracy. The present utility model provides an automatic water replenishment device for measuring the pressure absorption amount of superabsorbent resin. The automatic water replenishment device for measuring the pressure absorption amount of superabsorbent resin provided by the present utility model includes a shallow chassis, a liquid storage tank, an upper cover and a hole plug. The liquid storage tank is arranged on the shallow chassis. The liquid storage tank is a hollow structure with an open upper end and is detachably and sealingly connected to the upper cover; a water outlet hole is opened at the lower part of the liquid storage tank and is detachably and sealingly connected to the hole plug. Through the coordinated action of the liquid storage tank and the shallow chassis, the present utility model realizes the automatic replenishment of physiological saline. During the test, when the liquid level in the shallow chassis drops below the water outlet hole, the physiological saline in the liquid storage tank will automatically flow out and be replenished into the shallow chassis, ensuring the constancy of the liquid level in the shallow chassis during the test, avoiding the deviation of the test results caused by untimely or uneven water replenishment, and improving the accuracy and efficiency of the test. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is the front view of an automatic water replenishment device for measuring the pressure absorption amount of superabsorbent resin provided by the present utility model;

[0030] Figure 2It is a side view of an automatic water replenishing device provided by the present utility model for measuring the pressure absorption amount of superabsorbent resin;

[0031] Figure 3 It is a top view of an automatic water replenishing device provided by the present utility model for measuring the pressure absorption amount of superabsorbent resin.

[0032] In the figure:

[0033] 1. Shallow bottom plate; 2. Liquid storage tank; 21. Water outlet hole; 3. Upper cover; 31. Handheld part; 32. Sealing ring; 4. Metal wire. Specific embodiments

[0034] To make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.

[0035] As Figures 1-3 shown, an automatic water replenishing device provided by the present utility model for measuring the pressure absorption amount of superabsorbent resin includes a shallow bottom plate 1, a liquid storage tank 2, an upper cover 3 and a hole plug. The liquid storage tank 2 is arranged on the shallow bottom plate 1. The liquid storage tank 2 is a hollow structure with an open upper end and is detachably and hermetically connected to the upper cover 3. A water outlet hole 21 is opened at the lower part of the liquid storage tank 2 and is detachably and hermetically connected to the hole plug.

[0036] Through the coordinated action of the liquid storage tank 2 and the shallow bottom plate 1, the automatic replenishment of physiological saline is realized, reducing manual intervention. During the test, when the liquid level in the shallow bottom plate 1 drops below the water outlet hole 21, the physiological saline in the liquid storage tank 2 will automatically flow out and be replenished into the shallow bottom plate 1 to ensure the constancy of the liquid level in the shallow bottom plate 1 during the test, effectively avoiding the detection error of the SAP absorption amount that may be caused by untimely or uneven manual water replenishment, and improving the accuracy and efficiency of the test.

[0037] Furthermore, the liquid storage tank 2 is a cylindrical structure with an open upper end, and the shape of the water outlet hole 21 can be set as circular or rectangular, preferably rectangular.

[0038] The shallow bottom plate 1 and the liquid storage tank 2 are made of quartz glass or polypropylene materials, which have good corrosion resistance and transparency, can resist the erosion of physiological saline, ensure the stability and reliability of the test device, and although the transparency of the polypropylene material is not as good as that of the quartz glass material, it can also provide sufficient visibility to facilitate the intuitive observation of the liquid level change during the test.

[0039] As an optional implementation, a wire 4 is provided on the shallow chassis 1. The number of wires 4 is two, and they are arranged in parallel for supporting and fixing the plastic round barrel.

[0040] The wire 4 is made of 304 stainless steel, with good structural strength and corrosion resistance. It can not only effectively support the plastic round barrel, but also resist the erosion of physiological saline, extend the service life, and ensure the stability and reliability of the testing device.

[0041] As an optional implementation, the upper end of the water outlet hole 21 is higher than the upper end of the wire 4.

[0042] With such a setting, it can be ensured that during the test, when the liquid level in the shallow chassis 1 drops below the position of the water outlet hole 21, the physiological saline in the liquid storage tank 2 will automatically flow out through the water outlet hole 21 and be replenished into the shallow chassis 1 to achieve automatic water replenishment.

[0043] As an optional implementation, a sealing ring 32 is provided on the outer peripheral edge of the upper cover 3.

[0044] With such a setting, the sealing ring 32 can closely fit at the interface between the upper cover 3 and the liquid storage tank 2, enhancing the sealing between the upper cover 3 and the liquid storage tank 2. So that during liquid replenishment, the internal pressure of the liquid storage tank 2 can be maintained higher than the external environment, and the physiological saline can smoothly flow into the shallow chassis 1 through the water outlet hole 21.

[0045] As an optional implementation, a hand-held part 31 is provided on the upper end surface of the upper cover 3.

[0046] Furthermore, the hand-held part 31 includes a protruding handle, a groove or other existing structures that are easy to grasp. It is convenient to hold more easily when opening or closing the upper cover 3, improving the convenience of operation.

[0047] As an optional implementation, the water outlet hole 21 is located at the connection between the liquid storage tank 2 and the shallow chassis 1.

[0048] When the liquid level in the shallow chassis 1 drops, the physiological saline in the liquid storage tank 2 can flow into the shallow chassis 1 through the water outlet hole 21 faster to maintain the stability of the liquid level.

[0049] As an optional implementation, the shallow chassis 1 and the liquid storage tank 2 are integrally formed.

[0050] With such a setting, the structure is simplified, and the integrity and durability of the device are improved.

[0051] As an optional implementation, the inner diameter of the shallow chassis 1 is 130 mm - 170 mm, preferably 150 mm. The height of the shallow chassis 1 is 10 mm - 50 mm, preferably 30 mm.

[0052] The inner diameter of the liquid storage tank 2 is 30 mm - 70 mm, preferably 50 mm. The volume of the liquid storage tank 2 is 80 mL - 120 mL, preferably 100 mL. The length of the water outlet hole 21 is 8 mm - 12 mm, preferably 10 mm. The height of the water outlet hole 21 is 4 - 6 mm, preferably 4 mm.

[0053] The diameter of the wire 4 is 2 mm.

[0054] It should be noted that the specific specifications of the shallow chassis 1, the liquid storage tank 2 and the water outlet hole 21 can be set according to the test requirements.

[0055] The usage method of the present utility model:

[0056] S1: Block the water outlet hole 21 of the liquid storage tank 2 with a hole plug, and add an appropriate amount of normal saline (not to be filled up). Subsequently, tightly cover the upper cover 3 so that the liquid storage tank 2 stores the normal saline to be used, and the water outlet hole 21 is sealed by the hole plug to prevent premature outflow.

[0057] S2: When the test starts, pull out the hole plug to open the water outlet hole 21, and the internal and external air pressures are balanced. The normal saline flows out into the shallow chassis 1 due to the action of gravity. When the liquid level in the shallow chassis 1 is higher than the water outlet hole 21 of the liquid storage tank 2, due to the action of atmospheric pressure, the water will stop flowing out, forming a liquid level balance.

[0058] S3: As the SAP sample starts to absorb water, the liquid level of the normal saline in the shallow chassis 1 gradually decreases; once the liquid level drops below the water outlet hole 21, since the pressure inside the liquid storage tank 2 is still relatively high compared to the outside, the water will automatically flow out again until the liquid level in the shallow chassis 1 is higher than the water outlet hole 21 again, forming a liquid level balance to ensure that the SAP sample is always fully wetted by the normal saline during the test.

[0059] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not detailed in some embodiments can be seen in the same or similar content of other embodiments.

[0060] In the description of the present utility model, it should be noted that unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and 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 therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0061] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. 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 circumstances.

[0062] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "an example" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] As described above, the above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. An automatic water replenishing device for measuring the pressure absorption capacity of superabsorbent resins, characterized in that, It includes a shallow chassis, a liquid storage tank, an upper cover and a hole plug. The liquid storage tank is arranged on the shallow chassis. The liquid storage tank is a hollow structure with an open upper end and is detachably and sealingly connected to the upper cover. A water outlet hole is formed in the lower part of the liquid storage tank and is detachably and sealingly connected to the hole plug.

2. The automatic water replenishing device for measuring the pressure absorption amount of superabsorbent resin according to claim 1, wherein, Two metal wires are arranged on the shallow chassis and are parallel to each other for supporting and fixing a plastic drum.

3. The automatic water replenishing device for measuring the pressure absorption amount of superabsorbent resin according to claim 2, wherein, The upper end of the water outlet hole is higher than the upper end of the metal wire.

4. The automatic water replenishing device for measuring the pressure absorption amount of superabsorbent resin according to claim 1, wherein A sealing ring is arranged on the outer peripheral edge of the upper cover.

5. The automatic water replenishing device for measuring the pressure absorption amount of superabsorbent resin according to claim 4, characterized in that, A handle is arranged on the upper end face of the upper cover.

6. The automatic water replenishing device for measuring the pressure absorption amount of superabsorbent resin according to claim 1, wherein, The water outlet hole is located at the connection between the liquid storage tank and the shallow chassis.

7. An automatic water replenishing device for measuring the pressure absorption capacity of superabsorbent resin according to claim 1, characterized in that, The shallow chassis and the liquid storage tank are integrally formed.

8. The automatic water replenishing device for measuring the pressure absorption amount of superabsorbent resin according to claim 3, characterized in that, The inner diameter of the shallow chassis is 130 mm - 170 mm and the height is 10 mm - 50 mm; The inner diameter of the liquid storage tank is 30 mm - 70 mm and the volume is 80 mL - 120 mL; The length of the water outlet hole is 8 mm - 12 mm and the height is 4 - 6 mm; The diameter of the metal wire is 2 mm.

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