Liquid suction pipe capable of reducing sediment suction

Abstract

The utility model discloses a pipette for reducing sediment suction, which comprises a flat triangular pipette head, a vertical hard straight tube and a hose, one end of the hard straight tube extends into the pipette head from the upper side surface of the pipette head, and the other end of the hard straight tube is communicated with the hose. The liquid suction pipe has the advantage of reducing suction of sediment.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of liquid suction tubes for reducing the suction of sediment. BACKGROUND

[0002] Before filtration operation, sometimes it is necessary to extract part of supernatant to reduce the burden of filter. The existing liquid extraction device is usually a straight circular tube, which causes the liquid to flow fast in the vertical direction when sucking the supernatant, and the lower sediment material is brought up, so that the material and the supernatant are sucked together. This way of sucking the supernatant by the liquid suction tube can cause a significant decrease in yield when collecting the lower material.

[0003] Chinese patent (CN86203629U) discloses a liquid suction tube with a directional umbrella-shaped filter screen, but this liquid suction tube still sucks the sediment material in the vertical direction, and the filter screen cannot play its due role when the particle size of the sediment material is very small.

[0004] Chinese patent (CN2078815U) discloses a rotatable liquid suction tube, which can suck the supernatant from the upper layer to the lower layer and avoid sucking the sediment material as much as possible. However, it is not suitable for containers with a large aspect ratio, and the position of the liquid suction tube head is still a circular tube, which can cause the exchange of upper and lower liquids and suck the sediment material when sucking the liquid.

[0005] Therefore, the problem of the liquid suction tube sucking the supernatant and easily bringing the lower material needs to be solved. SUMMARY

[0006] To solve the problem of the liquid suction tube sucking the supernatant and easily bringing the lower material, the utility model provides a liquid suction tube for reducing the suction of sediment.

[0007] The liquid suction tube for reducing the suction of sediment, comprising a flat triangular liquid suction head, a vertical rigid tube and a hose, the rigid tube extends into the liquid suction head from the upper side of the liquid suction head at one end, and the other end is communicated with the hose.

[0008] Further, the liquid suction head comprises a bottom plate and a top plate of the same triangle, and two side plates connected between the bottom plate and the top plate. One end of one side plate is connected to one end of the other side plate. The liquid suction cavity with an open front end and a closed rear end is surrounded by the bottom plate, the top plate and the two side plates. The rigid tube extends into the liquid suction cavity perpendicularly to the top plate, and the distance from the extending end to the upper surface of the bottom plate is 0.1-15 cm.

[0009] Further, one side plate is arranged along one edge corresponding to the bottom plate and the top plate, and the other side plate is arranged along the other edge corresponding to the bottom plate and the top plate. The included angle between the two side plates is more than 90°.

[0010] Further, a notch recessed towards the rear end is formed at the position of the top plate at the open end.

[0011] Further, the rigid tube is a transparent plastic tube or a glass tube, the rigid tube comprises an upper tube segment, a middle tube segment and a lower tube segment, the upper tube segment and the middle tube segment are connected through the filter, the lower tube segment is inserted into the liquid suction cavity by being inserted and glued with the top plate, when the rigid tube is the plastic tube, the middle tube segment and the lower tube segment are screw-connected, when the rigid tube is the glass tube, the middle tube segment and the lower tube segment are sleeve-connected, and the soft tube is a plastic tube or a rubber tube.

[0012] Further, the filter comprises a shell and a filter core installed in the shell, and the filtering precision of the filter core is 5-10 μm.

[0013] Beneficial effects: the rigid tube of the liquid suction tube is communicated with the flat liquid suction head, when liquid is sucked, the liquid is first sucked into the horizontal liquid suction head, and then is sucked into the vertical rigid tube, and because the opening of the liquid suction head is wide, the flow speed of the liquid entering the opening is slow, which is obviously smaller than the flow speed when a straight round tube is used to suck liquid, so that the liquid can be prevented from flowing fast and carrying the precipitate, and the rigid tube can be used to conveniently suck liquid and control the liquid suction depth; the rigid tube is inserted into the liquid suction cavity and the inserted end is close to the upper surface of the bottom plate, which is beneficial to liquid suction; one side plate is arranged along one edge corresponding to the bottom plate and the top plate, and the other side plate is arranged along the other edge corresponding to the bottom plate and the top plate, so that the liquid suction head is more regular and beautiful in shape, and the included angle between the two side plates is more than 90°, so that the opening end is wide enough and the liquid flow is slow enough when liquid is sucked; the notch recessed towards the rear end is arranged at the position of the top plate corresponding to the opening end, so that more upper clear liquid can be sucked instead of more lower liquid; the rigid tube is a transparent plastic tube or a glass tube, so that the situation of the sucked liquid can be directly observed to determine whether the liquid is clear, and the filter can be installed to prevent the precipitate from being sucked; the filtering precision of the filter core is 5-10 μm, so that the material with extremely small particle size can be prevented from entering the soft tube; after the liquid suction tube is used to suck liquid, the yield can be increased from 95.0% to 98.5%. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 FIG. 1 is a structural schematic view of the liquid suction tube of the embodiment 1;

[0015] Figure 2 FIG. 2 is a top view of the liquid suction tube of the embodiment 1;

[0016] Figure 3 FIG. 3 is a side view of the liquid suction tube of the embodiment 1;

[0017] Figure 4 FIG. 4 is a top view of the liquid suction tube of the embodiment 2;

[0018] In the figure, 1, bottom plate; 2, top plate; 21, notch; 3, side plate; 4, upper pipe segment; 5, middle pipe segment; 6, lower pipe segment; 7, hose; 8, filter. DETAILED DESCRIPTION

[0019] The utility model will be explained in further detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only schematically show the basic structure of the utility model, so they only show the structure related to the utility model. EMBODIMENT

[0020] As Figures 1-3 shown in the figure, the utility model is a liquid suction tube for reducing sediment inhalation, which comprises a flat triangular liquid suction head, a vertical rigid pipe and a hose 7. One end of the rigid pipe extends into the liquid suction head from the upper side of the liquid suction head, and the other end is communicated with the hose 7.

[0021] Specifically, the liquid suction head comprises identical bottom plate 1 and top plate 2 which are substantially isosceles triangles, and two side plates 3 connected between the bottom plate 1 and the top plate 2. The materials of the bottom plate 1, the top plate 2 and the side plates 3 are all plastic. The lengths of the two side plates 3 are the same as the waists of the isosceles triangles, both being 9.6 cm. One side plate 3 is arranged along one of the corresponding waists of the bottom plate 1 and the top plate 2, and the other side plate 3 is arranged along the other of the corresponding waists of the bottom plate 1 and the top plate 2. The two side plates 3 are connected at the top point of the triangle. The included angle between the two side plates 3 is 90°. The bottom plate 1 and the top plate 2 are parallel. The distance between the bottom plate 1 and the top plate 2 is 1 cm. The bottom plate 1, the top plate 2 and the two side plates 3 enclose a liquid suction cavity which is open at the front end and closed at the rear end. The rigid pipe extends into the liquid suction cavity perpendicularly to the top plate 2, that is, the included angle between the rigid pipe and the upper surface of the top plate 2 is 90°. The distance from the extending end to the upper surface of the bottom plate 1 is 0.5 cm. The distance from the center of the extending end to the connecting part of the two side plates 3 is 2 cm. A notch 21 recessed towards the rear end is formed in the part of the top plate 2 located at the open end. The notch 21 is an isosceles trapezoid with an upper base of 9 cm, a lower base of 13 cm and a height of 2 cm.

[0022] The rigid pipe is a transparent plastic pipe with an inner diameter of 2.8 cm and an outer diameter of 3 cm. The rigid pipe comprises an upper pipe segment 4, a middle pipe segment 5 and a lower pipe segment 6. The upper pipe segment 4 and the middle pipe segment 5 are connected through a filter 8. The middle pipe segment 5 and the lower pipe segment 6 are screw-connected. The lower pipe segment 6 is tightly inserted into the top plate 2 and glued to extend into the liquid suction cavity. The above-mentioned hose 7 is a rubber pipe with an inner diameter slightly larger than the outer diameter of the upper pipe segment 4 of the rigid pipe, so as to seal and cover the rigid pipe and be tightened by iron hoops, straps and the like. The filter 8 comprises a shell and a filter core installed in the shell. The filtering precision of the filter core is 5-10 μm.

[0023] In actual use, the liquid suction head can be placed at the liquid surface, so that the liquid flow rate is slow in the vertical direction, and most of the suctioned liquid is surface liquid, and few sediments are sucked out. When in use, the liquid condition can be directly observed through the transparent rigid pipe, and the liquid suction depth can be changed or the liquid suction can be stopped in time. The end of the flexible pipe 7 away from the rigid pipe can be connected to various water pumps such as diaphragm pumps and centrifugal pumps to provide suction. Embodiment

[0024] In Embodiment 1, the connection of the two side plates 3 is changed to an arc shape, and the corners of the bottom plate 1 and the top plate 2 where the two side plates 3 are connected are also changed to the same arc shape. The outer pipe wall of the extended end abuts against the arc surface. Except for this, it is the same as Embodiment 1, and the structure is as shown in Figure 4 Thus, the liquid suction operation is more convenient. Embodiment

[0025] In Embodiment 1, the included angle between the rigid pipe and the upper surface of the top plate 2 is changed to 80°, and when the rigid pipe is vertical, the end of the bottom plate 1 located at the opening end of the liquid suction head is higher than the end located at the rear end. Except for this, it is the same as Embodiment 1. In this way, the top plate 2 is inclined relative to the rigid pipe, and the liquid can be sucked from the supernatant layer as much as possible.

[0026] The above-mentioned technologies not specifically mentioned refer to the prior art.

[0027] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the present application. The technical scope of the present application is not limited to the contents in the specification.

Claims

1. A pipette with reduced sediment aspiration, characterized in that, The liquid suction head comprises a flat triangular shape, a vertical rigid tube and a flexible tube, one end of the rigid tube extends into the liquid suction head from the upper side of the liquid suction head, and the other end is communicated with the flexible tube; The liquid suction head comprises a flat triangular shape, a vertical rigid tube and a flexible tube, one end of the rigid tube extends into the liquid suction head from the upper side of the liquid suction head, and the other end is communicated with the flexible tube; 2. The pipette of claim 1, wherein, One side plate is arranged along one corresponding edge of the bottom plate and the top plate, and the other side plate is arranged along the other corresponding edge of the bottom plate and the top plate, and the included angle between the two side plates is greater than 90°.

3. The pipette of claim 2, wherein, The top plate is provided with a notch at the position of the open end, which is recessed towards the rear end.

4. The pipette of claim 3, wherein, The rigid tube is a transparent plastic tube or a glass tube, the rigid tube comprises an upper tube segment, a middle tube segment and a lower tube segment, the upper tube segment and the middle tube segment are connected through a filter, the lower tube segment is inserted and glued with the top plate and extends into the liquid suction cavity; when the rigid tube is a plastic tube, the middle tube segment and the lower tube segment are screw-connected; when the rigid tube is a glass tube, the middle tube segment and the lower tube segment are snap-fit connected; the flexible tube is a plastic tube or a rubber tube.

5. The pipette of claim 4, wherein, The filter comprises an outer shell and a filter element installed in the outer shell, and the filtering precision of the filter element is 5-10 μm.

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