Stirring rod with holes

Abstract

The utility model relates to a stirring rod with holes, which comprises a vertically arranged stirring rod body, a circular stirring plate is fixed at the lower end of the stirring rod body, the stirring plate is horizontally arranged, and a plurality of vertical through holes are distributed on the stirring plate; a stirring head which is vertically arranged is arranged below the stirring plate, an inserting round hole is formed in the top surface of the stirring head, the lower end of the stirring rod body is fixedly inserted into the inserting round hole, and an abutting step surface is formed between the top of the stirring head and the stirring rod body; and the bottom surface of the stirring plate is in contact with the abutting step surface. The stirring rod is simple and reasonable in structural design, the stirring plate in a horizontal state is arranged at the lower end of the stirring rod body, and a plurality of vertical through holes are formed in the stirring plate, so that brought-in air can be reduced in the slow up-and-down stirring process, experimental errors are effectively reduced, and the accuracy of experimental data is improved.

Description

Technical field:

[0002] The utility model relates to a stirring rod with a hole. Background technology:

[0004] At present, during the five-day biochemical oxygen demand experiment, the water sample and dilution water need to be added to the measuring cylinder for stirring and mixing. However, because the dilution water is well aerated, the traditional stirring method is mostly to stir in the measuring cylinder with a handheld glass stirring rod, which easily brings air into the liquid, which will affect the experimental results and cause experimental errors. For this reason, it is necessary to improve the existing glass stirring rod to reduce the amount of air brought in during stirring, and this case is born.

[0005] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Utility model content:

[0007] The utility model makes improvements on the problems existing in the above-mentioned prior art, that is, the technical problem to be solved by the utility model is to provide a stirring rod with holes, which has reasonable design, effectively reduces the air introduced during the stirring process, and reduces experimental errors.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is: a perforated stirring rod, comprising a vertically arranged stirring rod body, a circular stirring plate is fixed to the lower end of the stirring rod body, the stirring plate is horizontally arranged, and a plurality of vertical through holes are distributed on the stirring plate.

[0009] Furthermore, a mounting through hole is provided in the middle of the stirring plate and penetrates vertically, and the lower end of the stirring rod body passes through the mounting through hole.

[0010] Furthermore, the stirring rod body is interference fit with the mounting through hole.

[0011] Furthermore, a vertically arranged stirring head is provided below the stirring plate, a plug-in circular hole is provided on the top surface of the stirring head, the lower end of the stirring rod body is fixedly inserted in the plug-in circular hole, and abutment step surface is formed between the top of the stirring head and the stirring rod body; the bottom surface of the stirring plate is in contact with the abutment step surface.

[0012] Furthermore, the stirring head is in the shape of a stepped shaft with a small diameter at the upper end and a large diameter at the lower end. The bottom surface of the stirring head is provided with two grooves that are centrally symmetrically distributed around the axis of the stirring head. One end of the groove extends to the outer circumferential surface of the stirring head and forms an opening. The lower end of the stirring head is provided with a radial through hole, which is connected to the two grooves.

[0013] Furthermore, the stirring rod body comprises a rigid sleeve, and a metal reinforcing rod is coaxially arranged inside the rigid sleeve.

[0014] Compared with the prior art, the utility model has the following effects: the utility model has a simple and reasonable structural design, and a horizontal stirring plate is arranged at the lower end of the stirring rod body, and a plurality of vertical through holes are opened on the stirring plate, so that the air introduced can be reduced during the slow up and down stirring process, thereby effectively reducing the experimental error and improving the accuracy of the experimental data. Description of the drawings:

[0016] Figure 1 This is a three-dimensional structure diagram of an embodiment of the utility model. Figure 1 ;

[0017] Figure 2 This is a three-dimensional structure diagram of an embodiment of the utility model. Figure 2 ;

[0018] Figure 3 It is a schematic diagram of the use state of an embodiment of the utility model;

[0019] Figure 4 The three-dimensional structure diagram of the stirring head in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 5 The three-dimensional structure diagram of the stirring head in the embodiment of the utility model is shown in FIG. Figure 2 . Specific implementation method:

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] like Figures 1 to 5As shown, the utility model is a stirring rod with holes, comprising a stirring rod body 1 arranged vertically, a circular stirring plate 2 is fixed at the lower end of the stirring rod body 1, the diameter of the stirring plate 2 is slightly smaller than the inner diameter of the measuring cylinder 3, the stirring plate 2 is arranged horizontally, and a plurality of vertical through holes 4 are distributed on the stirring plate 2. When in use, the sample is first added into the measuring cylinder 3, and then the aerated dilution water is added into the measuring cylinder 3, and then the whole stirring rod is vertically extended into the measuring cylinder 3, and then the stirring rod body 1 is slowly moved up and down to achieve stirring. By setting a stirring plate 2 in a horizontal state at the lower end of the stirring rod body 1, and opening a plurality of vertical through holes 4 on the stirring plate 2, the air introduced can be reduced during the slow up and down stirring process, effectively reducing the experimental error and improving the accuracy of the experimental data.

[0025] In this embodiment, the plurality of vertical through holes 4 are divided into two circles, each circle of vertical through holes is evenly distributed around the axis of the stirring plate, and the two circles of vertical through holes are distributed sequentially from the inside to the outside. Further, the vertical through holes are circular holes.

[0026] In this embodiment, a vertically penetrating mounting through hole 5 is provided in the middle of the stirring plate 2, and the lower end of the stirring rod body 1 passes through the mounting through hole 5. Preferably, the stirring rod body and the mounting through hole are interference fit.

[0027] In this embodiment, in order to prevent the sample from sinking to the bottom of the measuring cylinder and thus affecting the uniformity of stirring, a vertically arranged stirring head 6 is provided below the stirring plate 2. The stirring head 6 is connected to the lower end of the stirring rod body 1, and the axes of the stirring head, the stirring plate and the stirring rod body coincide.

[0028] In this embodiment, a plug-in circular hole 7 is provided on the top surface of the stirring head 6, and the lower end of the stirring rod body 1 is fixedly inserted in the plug-in circular hole 7, so that the stirring rod body and the stirring head are connected as a whole.

[0029] In this embodiment, a contact step surface is formed between the top of the stirring head 6 and the stirring rod body 1; the bottom surface of the stirring plate 2 is in contact with the contact step surface, and the contact step surface can support the stirring plate.

[0030] In this embodiment, the stirring head 6 is in the shape of a stepped shaft with a small diameter at the upper end and a large diameter at the lower end, and the diameter of the upper end of the stirring head 6 is larger than the diameter of the stirring rod body 1 .

[0031] In this embodiment, in order to facilitate the flow of liquid during stirring and improve the uniformity of stirring, the bottom surface of the stirring head 6 is provided with two grooves 8 which are centrally symmetrically distributed around the axis of the stirring head 6, and the depth of the groove 8 is along the axial direction of the stirring head 6; one side end of the groove 8 extends to the outer circumferential surface of the stirring head 6 and forms an opening, and the lower end of the stirring head 6 is provided with a radial through hole 9, and the radial through hole 9 is connected to the two grooves 8.

[0032] In another embodiment, the stirring rod body includes a rigid sleeve, and a metal reinforcing rod is coaxially arranged inside the rigid sleeve. By arranging the metal reinforcing rod inside the rigid sleeve, the overall structural strength of the stirring rod body can be improved, the bending deformation can be effectively reduced, and compared with the traditional glass stirring rod, the breaking can be effectively avoided.

[0033] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except where it is obviously impossible to use an one-piece molding process).

[0034] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar or close thereto.

[0035] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A stirring rod with a hole, comprising a stirring rod body arranged vertically, characterized in that: A circular stirring plate is fixed to the lower end of the stirring rod body, the stirring plate is horizontally arranged, and a plurality of vertical through holes are distributed on the stirring plate; a vertically arranged stirring head is provided below the stirring plate, and a plug-in circular hole is provided on the top surface of the stirring head, and the lower end of the stirring rod body is fixedly inserted in the plug-in circular hole, and abutting step surface is formed between the top of the stirring head and the stirring rod body; the bottom surface of the stirring plate is in contact with the abutting step surface.

2. A stirring rod with holes according to claim 1, characterized in that: A mounting through hole is provided in the middle of the stirring plate and penetrates vertically, and the lower end of the stirring rod body passes through the mounting through hole.

3. A stirring rod with holes according to claim 2, characterized in that: The stirring rod body is interference fit with the mounting through hole.

4. A stirring rod with holes according to claim 1, characterized in that: The stirring head is in the shape of a stepped shaft with a small diameter at the upper end and a large diameter at the lower end. The bottom surface of the stirring head is provided with two grooves that are centrally symmetrically distributed around the axis of the stirring head. One end of the groove extends to the outer circumferential surface of the stirring head and forms an opening. The lower end of the stirring head is provided with a radial through hole, which is connected to the two grooves.

5. The stirring rod with holes according to claim 1, characterized in that: The stirring rod body comprises a rigid sleeve, and a metal reinforcing rod is coaxially arranged inside the rigid sleeve.

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