Tube cap inner pad of digestion colorimetric tube and tube cap of digestion colorimetric tube

Abstract

The utility model discloses a digestion colorimetric tube cap inner pad and a digestion colorimetric tube cap, and relates to the field of test instruments, the digestion colorimetric tube cap inner pad comprises a cylindrical inner pad body, one side of the inner pad body is provided with a protruding part, the length direction of the protruding part is perpendicular to the cross section of the inner pad body, and the periphery of the inner pad body is provided with a clamping groove; according to the inner pad of the tube cover, condensate on the inner pad is gathered through the lug bosses, so that the condensate gradually drips down during heating digestion, the condensate is prevented from gathering on the inner edge of the tube cover, the violent fluctuation of the pressure in the tube in the digestion process is avoided, and the hidden danger of bursting of the digestion colorimetric tube is eliminated.

Description

Technical Field

[0001] The utility model belongs to the field of test instruments, and more specifically relates to an inner pad of a tube cover of a digestion colorimetric tube and a tube cover of the digestion colorimetric tube. Background Art

[0002] The inner pad of the tube cover of the digestion colorimetric tube used for measuring chemical oxygen demand COD or total phosphorus TP, total nitrogen TN and other indicators is in the shape of a disc. Condensate tends to gather in a circle around the inner side of the tube cover until it suddenly falls when the weight is too heavy to be supported by the surface tension, causing a large pressure fluctuation in the heated digestion colorimetric tube, increasing the risk of the digestion colorimetric tube bursting. Utility Model Content

[0003] The purpose of the utility model is to provide an inner pad for a tube cover of a digestion colorimetric tube and a tube cover for a digestion colorimetric tube in view of the deficiencies in the prior art. The inner pad for the tube cover gathers condensed liquid on the inner pad through a raised portion so that it gradually drips during heated digestion, and the condensed liquid is prevented from gathering in large quantities on the inner edge of the tube cover, thereby avoiding drastic fluctuations in the pressure in the tube during the digestion process and eliminating the hidden danger of bursting of the digestion colorimetric tube.

[0004] In order to achieve the above object, the utility model provides a tube cover inner pad for a digestion colorimetric tube, comprising:

[0005] The inner pad body is cylindrical, a protrusion is arranged on one side of the inner pad body, the length direction of the protrusion is perpendicular to the cross section of the inner pad body, and a clamping groove is arranged on the outer periphery of the inner pad body.

[0006] Optionally, two protrusions are provided, and the protrusions are evenly arranged on the inner pad body.

[0007] Optionally, there is one protrusion, which is centrally arranged on the inner pad body.

[0008] Optionally, a conical surface is provided on the outer periphery of the raised portion, and the axis of the conical surface coincides with the axis of the raised portion.

[0009] Optionally, the conical surface extends to an outer surface of one side of the inner pad body, and an axis of the conical surface coincides with an axis of the inner pad body.

[0010] Optionally, the interior of the conical surface is a hollow structure.

[0011] Optionally, an opening is provided on the other side of the inner pad body, and a cavity communicating with the opening is provided inside the inner pad body.

[0012] The utility model also provides a tube cover for a digestion colorimetric tube, comprising the above-mentioned tube cover inner pad and a tube cover body of the digestion colorimetric tube, wherein a mounting groove is arranged at the bottom of the tube cover body, and the other side of the inner pad body is arranged in the mounting groove.

[0013] Optionally, a boss that cooperates with the snap-in groove is provided on the inner wall of the installation groove, and the inner pad body and the tube cover body are detachably connected.

[0014] The utility model provides an inner pad for a tube cover of a digestion colorimetric tube and a tube cover for a digestion colorimetric tube, the beneficial effects of which are: a raised portion is centrally arranged on the lower side of the inner pad of the tube cover, and a conical surface is arranged between the outer periphery of the raised portion and the outer edge of the inner pad body; when condensate appears on the inner pad body, the condensate will be drained through the conical surface and the raised portion and gathered to the lower end of the raised portion, so that the condensate falls drop by drop when it falls, avoiding causing violent fluctuations in the pressure in the tube.

[0015] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0017] Figure 1 A schematic structural diagram of an inner gasket of a tube cover of a digestion colorimetric tube according to an embodiment of the utility model is shown.

[0018] Figure 2 Shows Figure 1 Bottom view of .

[0019] Figure 3 Shows Figure 1 Stereoscopic diagram.

[0020] Description of reference numerals:

[0021] 1. Inner pad body; 2. Raised portion; 3. Conical surface. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0023] The utility model provides a tube cover inner pad for a digestion colorimetric tube, comprising:

[0024] The inner pad body is cylindrical, a protrusion is arranged on one side of the inner pad body, the length direction of the protrusion is perpendicular to the cross section of the inner pad body, and a clamping groove is arranged on the outer periphery of the inner pad body.

[0025] Specifically, the inner pad of the tube cover includes an inner pad body and a protrusion. When the tube cover body is installed on the tube cover and connected and fixed to the colorimetric tube, the protrusion is located in the colorimetric tube and is in a vertical downward setting. The tube cover body is connected to the tube cover through a snap-fit ​​groove to avoid the problem of the inner pad of the tube cover falling off when the colorimetric tube is connected to the tube cover, resulting in test failure. During the test, condensate will gather on the lower side of the inner pad of the tube cover. Since the protrusion is provided, the condensate will be drained to the lower end of the protrusion, thus avoiding the condensate from suddenly falling after gathering in a circle around the inner side of the tube cover, effectively controlling the phenomenon of violent fluctuations in the pressure in the tube during the digestion process, and eliminating the hidden danger of bursting of the digestion colorimetric tube.

[0026] In the structure of the inner pad of the tube cover, the raised portion is set to be cylindrical, and a hemispherical surface is set at the lower end of the raised portion, so that the condensed liquid can move downward along the raised portion and finally converge through the hemispherical surface at the lower end. In this way, the condensed liquid is gathered at one point and finally falls drop by drop onto the liquid surface, avoiding large-scale aggregation, so as not to cause an increase in pressure fluctuations in the tube.

[0027] Optionally, two protrusions are provided, and the protrusions are evenly arranged on the inner pad body.

[0028] Specifically, since the cross-section of the colorimetric tube is small and the size of the inner pad body is not large, the number of protrusions set on the side of the inner pad body cannot be more than two. The two protrusions are set at intervals and a certain distance is ensured between the protrusions. In this way, after the condensate is gathered through the protrusions, when the condensate on the two protrusions falls, there will be no excessive pressure fluctuation in the tube.

[0029] Optionally, one protrusion is provided, and the protrusion is centrally arranged on the inner pad body.

[0030] Specifically, when there is only one protrusion, the protrusion can be set in the center, so that when the condensate falls from the protrusion to the liquid surface in the tube, the pressure fluctuation in the tube will not have a great impact on the wall of the colorimetric tube, eliminating the hidden danger of the digestion colorimetric tube bursting.

[0031] Optionally, a conical surface is provided on the outer periphery of the protrusion, and the axis of the conical surface coincides with the axis of the protrusion.

[0032] Optionally, the conical surface extends to an outer surface of one side of the inner pad body, and the axis of the conical surface coincides with the axis of the inner pad body.

[0033] Specifically, the outer circumference of the raised portion forms a circle of conical surface, and the outer circumference of the conical surface extends to the side surface of the inner pad body. When a raised portion is provided, the axis of the raised portion, the axis of the conical surface and the axis of the inner pad body can be set to coincide with each other, so that the condensation liquid on the inner pad body will converge on the raised portion along the conical surface, and will not form a circle around the pipe cover.

[0034] Optionally, the interior of the conical surface is a hollow structure.

[0035] Optionally, an opening is provided on the other side of the inner pad body, and a cavity communicating with the opening is provided inside the inner pad body.

[0036] Specifically, the conical surface and the inner pad body adopt a hollow structure, which can reduce the weight of the inner pad of the pipe cover and prevent the inner pad of the pipe cover from vibrating and falling off the pipe cover; in addition, an opening is provided on the side of the inner pad body without a raised portion, which can cause the inner pad body to undergo surface deformation, making it easier to connect the inner pad of the pipe cover to the pipe cover.

[0037] The utility model also provides a tube cover for a digestion colorimetric tube, comprising the above-mentioned tube cover inner pad and a tube cover body of the digestion colorimetric tube, wherein a mounting groove is arranged at the bottom of the tube cover body, and the other side of the inner pad body is arranged in the mounting groove.

[0038] Specifically, the tube cover and the digestion colorimetric tube are threadedly connected. In order to achieve a fixed connection between the tube cover and the inner gasket of the tube cover, it is necessary to set a circle of flange on the inner side of the tube cover, and form a mounting groove by flanges of equal height, so that the outer periphery of the inner gasket of the tube cover can be clamped in the mounting groove. In addition, the height of the flange is set to be no greater than the height of the inner gasket body. When the tube cover is connected to the colorimetric tube, the outer peripheral surface of the flange fits the inner wall of the colorimetric tube, so that condensation will only be produced on the inner gasket of the tube cover; when condensation appears in the colorimetric tube, the condensation will eventually gather on the raised portion along the lower side and conical surface of the inner gasket of the tube cover, and only condensation drop points equal to the number of raised portions will appear on the tube cover, thus avoiding drastic fluctuations in the pressure in the tube.

[0039] Optionally, a boss that cooperates with the snap-in groove is provided on the inner wall of the installation groove, and the inner pad body and the tube cover body are detachably connected.

[0040] Specifically, the formation of condensation in the colorimetric tube may cause corrosion of the inner gasket of the tube cover. In order to ensure that the condensation in the tube gathers to one point and falls onto the reagent liquid surface, the inner gasket of the tube cover can be replaced in time without replacing the entire colorimetric tube, thereby effectively controlling the cost of the test equipment.

[0041] Example

[0042] like Figures 1 to 3 As shown, the utility model provides a tube cover inner pad for a digestion colorimetric tube, comprising:

[0043] The inner pad body 1 is cylindrical, and a protrusion 2 is arranged on one side of the inner pad body 1. The length direction of the protrusion 2 is perpendicular to the cross section of the inner pad body 1, and a snap-in groove is arranged on the outer periphery of the inner pad body 1.

[0044] In this embodiment, two protrusions 2 are provided, and the protrusions 2 are evenly arranged on the inner pad body 1 .

[0045] In this embodiment, only one protrusion 2 is provided, and the protrusion 2 is centrally arranged on the inner pad body 1 .

[0046] In this embodiment, a conical surface 3 is provided on the outer periphery of the protruding portion 2 , and the axis of the conical surface 3 coincides with the axis of the protruding portion 2 .

[0047] In this embodiment, the conical surface 3 extends to the outer surface of one side of the inner pad body 1 , and the axis of the conical surface 3 coincides with the axis of the inner pad body 1 .

[0048] In this embodiment, the interior of the conical surface 3 is a hollow structure.

[0049] In this embodiment, an opening is provided on the other side of the inner pad body 1 , and a cavity communicating with the opening is provided inside the inner pad body 1 .

[0050] The utility model also provides a tube cover for a digestion colorimetric tube, comprising the above-mentioned tube cover inner pad and a tube cover body of the digestion colorimetric tube, wherein a mounting groove is arranged at the bottom of the tube cover body, and the other side of the inner pad body is arranged in the mounting groove.

[0051] In this embodiment, a boss that matches the snap-in groove is provided on the inner wall of the installation groove, and the inner pad body and the tube cover body are detachably connected.

[0052] In summary, the tube cover inner gasket sets the thickness of the inner gasket body 1 to 1.6mm, sets the axial lengths of the conical surface 3 and the raised portion 2 to 3mm, sets the diameter of the inner gasket body 1 to 13.3mm, sets the outer edge diameter of the conical surface 3 to 9.9mm, and sets the outer edge diameter of the raised portion 2 to 1mm; the tube cover inner gasket of this size is installed in the tube cover, so that when condensation appears in the colorimetric tube, it will be drained by the conical surface 3 and gathered on the raised portion 2, and finally fall from the raised portion 2 to the liquid surface of the colorimetric tube, so that the pressure in the tube will not fluctuate violently.

[0053] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A tube cover inner pad for a digestion colorimetric tube, characterized in that: include: The inner pad body is cylindrical, a protrusion is arranged on one side of the inner pad body, the length direction of the protrusion is perpendicular to the cross section of the inner pad body, and a clamping groove is arranged on the outer periphery of the inner pad body.

2. The tube cover inner pad of the digestion colorimetric tube according to claim 1, characterized in that: The protrusions are provided with two, and the protrusions are evenly arranged on the inner pad body.

3. The tube cover inner pad of the digestion colorimetric tube according to claim 1, characterized in that: The protrusion is provided with one protrusion, and the protrusion is centrally arranged on the inner pad body.

4. The tube cover inner pad of the digestion colorimetric tube according to claim 1, characterized in that: A conical surface is arranged on the outer periphery of the protrusion, and the axis of the conical surface coincides with the axis of the protrusion.

5. The tube cover inner pad of the digestion colorimetric tube according to claim 4, characterized in that: The conical surface extends to the outer surface of one side of the inner pad body, and the axis of the conical surface coincides with the axis of the inner pad body.

6. The tube cover inner pad of the digestion colorimetric tube according to claim 4, characterized in that: The interior of the conical surface is a hollow structure.

7. The tube cover inner pad of the digestion colorimetric tube according to claim 1, characterized in that: An opening is arranged on the other side of the inner pad body, and a cavity communicating with the opening is arranged inside the inner pad body.

8. A tube cover for a digestion colorimetric tube, characterized in that: It comprises a tube cover inner pad and a tube cover body of the digestion colorimetric tube according to any one of claims 1 to 7, wherein a mounting groove is arranged at the bottom of the tube cover body, and the other side of the inner pad body is arranged in the mounting groove.

9. The tube cover of the digestion colorimetric tube according to claim 8, characterized in that: A boss matched with the clamping groove is arranged on the inner wall of the installation groove, and the inner pad body and the tube cover body are detachably connected.

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