Stirring tool unit

Abstract

To stir an object to be stirred in a container containing the object to be stirred without mixing air therein. [Solution] A cylindrical member 4 rotatably houses a shaft 3 having a helical screw 2, and has upper and lower through-holes 4A, 4B. The upper end opening of the cylindrical member 4 is closed with a cover member 5. The upper part of the shaft 3 passes through the cover member 5, and an impact driver D is connected to the tip of the shaft. A support means 12 that rotatably supports the shaft 3 so that the central axis of the shaft 3 is aligned with the central axis of the cylindrical member 4 is provided at the lower end of the cylindrical member 4. The rotation of the shaft 3 rotates the helical screw 2, and the material S to be stirred is circulated between the inside and outside of the cylindrical member 4, thereby stirring the material S to be stirred.

Description

[Technical Field]

[0001] The present invention relates to a stirring tool unit used for stirring materials such as various solutions including chemicals, powders, and particles. [Background technology]

[0002] A device that uses the rotation of a screw to mix an object to be mixed is known (see Patent Document 1). The above-mentioned screw is used in a continuous mixing device that is rotatably inserted into a cylindrical casing, a motor is provided to rotate the screw, a plurality of supply ports for the object to be mixed are formed in the casing, a supply device for the object to be mixed is provided at each of the supply ports, and a discharge port for the object to be mixed is formed in the casing, and the object to be mixed continuously supplied from each of the supply devices is conveyed to the discharge port while being mixed by the mixing screw that is rotated by the motor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-334566 Summary of the Invention [Problem to be solved by the invention]

[0004] The screw is used as one of the components of a continuous mixing device, and cannot be used to mix a substance to be mixed in a vessel that contains the substance to be mixed.

[0005] The present invention provides a stirring tool unit that can be used to stir an object to be stirred in a container that contains the object to be stirred. [Means for solving the problem]

[0006] The invention of claim 1 comprises a shaft that is driven to rotate by a power tool, a connecting member that is attached to the upper end of the shaft and to which the power tool is detachably connected, a cylindrical member in which the shaft is rotatably housed and in which a plurality of through holes are provided at a lower portion in the axial direction and spaced apart from each other, a flow generating member that is sandwiched between an upper fixing member and a lower fixing member at the lower portion of the shaft and is provided corresponding to the through holes, and that rotates in the object to be stirred to generate a flow of the object in the axial direction, and the connecting member is made of silicone resin. Near the mounting part a backflow prevention sleeve provided on the outside of the shaft between the upper fixing device and the upper fixing device; a cover member that closes the upper end opening of the tubular member and through which the upper portion of the shaft passes together with the backflow prevention sleeve; a shaft support pipe provided between an upper portion of the shaft and the cover member, the shaft being supported on the outside of the backflow prevention sleeve; The device is characterized by comprising a support means provided at the lower end of the cylindrical member and rotatably supporting the lower portion of the shaft so that the central axis of the shaft is positioned on the central axis of the cylindrical member, and is inserted into a container containing the material to be stirred. The shaft rotates within the material to circulate the material between the inside and outside of the cylindrical member through the through-hole, thereby stirring the material. Here, the flow generating member includes a helical screw and a screw propeller. An impact driver or the like is used as the power tool. The material to be stirred includes liquids, gels, highly viscous materials, etc.

[0007] In this way, the lower part of the cylindrical member that houses the shaft (the part having the through hole) By inserting the part (part) into the object to be stirred (in the container), the flow generating member (shaft) rotates. This causes the material to flow between the inside and outside of the cylindrical member through the through holes. The object to be stirred is circulated and stirred. At this time, the through-holes of the cylindrical member are provided. By making sure that the part that is being stirred is inside the material, air is not mixed in and the material is This prevents air bubbles from being included in the mixture. The backflow prevention sleeve also prevents the material being stirred from flowing back along the shaft periphery. The provision of the connecting member also ensures a secure connection to the power tool.

[0008] In this case, the method according to claim 2 As mentioned above, It is desirable that the shaft support pipe extend further downward than the lower end of the cover member.

[0009] In this way, the shaft support pipe stabilizes the rotation of the shaft.

[0014] Claim 3 As described above, the plurality of through holes are preferably upper and lower through holes provided in portions corresponding to the upper and lower ends of the flow generating member.

[0015] In this way, the object to be stirred can be efficiently circulated between the inside and outside of the cylindrical member through the through-holes, and stirred.

[0016] Claim 4 As described above, the support means is a support through which the lower part of the shaft passes. a metal fitting, and a support metal fitting so that the central axis of the shaft is positioned on the central axis of the cylindrical member; It is preferable that the device further comprises a fixing device for fixing the device in the tubular member.

[0017] In this way, it is possible to prevent the lower end of the shaft from vibrating with a simple structure. [Effects of the Invention]

[0018] The present invention has the following excellent effects. That is, by inserting the shaft into the object to be stirred, the rotation of the flow generating member (shaft) circulates the object to be stirred between the inside and outside of the cylindrical member through the through-hole (of the container) of the cylindrical member that houses the shaft, and stirring can be performed without entraining air. In other words, it is possible to prevent air bubbles from being included in the object to be stirred. [Brief explanation of the drawings]

[0019] [Figure 1]1A and 1B show an embodiment of a stirring tool unit according to the present invention, in which FIG. 1A is a longitudinal cross-sectional view and FIG. 1B is a cross-sectional view taken along line AA in FIG. 1A. [Figure 2] FIG. 2 is an explanatory diagram showing the components of the stirring tool unit, excluding the helical screw, in an exploded view. [Figure 3] 3(a) is a front view, FIG. 3(b) is a cross-sectional view taken along line BB in FIG. 3(a), FIG. 3(c) is a cross-sectional view taken along line CC in FIG. 3(a), and FIG. 3(d) is a side view showing a cylindrical member. [Figure 4] FIG. 2 is a front view showing a helical screw. [Figure 5] FIG. [Figure 6] FIG. 6(a) is a view similar to FIG. 1(a) showing another embodiment, and FIG. 6(b) is an explanatory diagram of a screw propeller. [Figure 7] FIG. [Figure 8] FIG. 1(a) is a view similar to FIG. 1(a) showing another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0021] FIG. 1 shows one embodiment of a stirring tool unit according to the present invention, in which FIG. 1(a) is a longitudinal cross-sectional view, FIG. 1(b) is a cross-sectional view taken along line AA in FIG. 1(a), and FIG. 2 is an explanatory view showing an exploded view of the components of the stirring tool unit excluding the cylindrical member and the helical screw.

[0022] 1 and 2, the stirring tool unit 1 includes a shaft 3 having a helical screw 2 (flow generating member), and the main portion of this shaft 3 is rotatably supported and housed in a cylindrical member 4 that is open at the top and bottom. The entire shaft 3 is a threaded rod, but it is also possible to make only a portion of it a threaded rod.

[0023] As shown in Figures 3(a) to 3(d), the cylindrical member 4 is provided with two upper and two lower through-holes 4A and 4B spaced apart in the axial direction. That is, the upper through-hole 4A is provided near the portion corresponding to the upper end of the helical screw 2, and the lower through-hole 4B is an elongated hole that is long in the axial direction and provided in the portion corresponding to the lower end of the helical screw 2. The upper through-hole 4A is offset by approximately 90 degrees from the lower through-hole 4B in the circumferential direction of the cylindrical member 4. The shape and number of the through-holes 4A and 4B are not particularly limited; for example, the lower through-hole may be a round hole and the upper through-hole may be an elongated hole.

[0024] The upper through-hole 4A and the lower through-hole 4B are provided near the portions corresponding to the upper and lower ends of the helical screw 2 so that the suction and discharge caused by the rotation of the helical screw 2 can be smooth.

[0025] The upper opening of the cylindrical member 4 is closed by a cover member 5 having an inverted trapezoidal cross section (made of a chemical-resistant resin such as silicone resin or metal that is not corroded by the object S to be stirred, such as organic solvents, oils, acids, and alkalis), and the upper end of the upper part 3A of the shaft 3 (the shaft part above the helical screw 2) penetrates the center of the cover member 5 and protrudes to the outside. A connecting member 11 is provided at the upper end of the upper part 3A for detachably connecting an impact driver D (see FIG. 5), which is a power tool.

[0026] Furthermore, a backflow prevention sleeve 7 (for example, a resin or metal with chemical resistance such as silicone resin that is not corroded by the stirred material S, including organic solvents, oils, acids, and alkalis) is provided on the upper portion 3A of the shaft 3, specifically, from near the attachment portion of the connecting member 11 to the upper fixing device 6A (for example, a nut) of the helical screw 2. This sleeve 7 extends to near the attachment portion of the connecting member 11, but can be shortened as long as it can prevent backflow.

[0027] Furthermore, a shaft support pipe 8 (made of, for example, SUS) is provided between the upper portion 3A of the shaft 3 (backflow prevention sleeve 7) and the cover member 5 to support the shaft 3 and prevent axial vibration. The shaft support pipe 8 extends from the inside of the cover member 5, protruding downward to the outside, and firmly supports the shaft 3 to prevent it from vibrating.

[0028] On the other hand, the lower end of the lower part 3B of the shaft 3 is rotatably supported by a support means 12 at the lower end of the cylindrical member 4 so that the central axis of the shaft 3 is positioned on the central axis of the cylindrical member 4 and so as not to obstruct the flow of the material to be stirred S through the lower end opening of the cylindrical member 4.

[0029] The support means 12 includes a cylindrical support bracket 13 having a central hole 13a through which the lower shaft portion 3B of the helical screw 2 passes, and two fasteners 6B (e.g., screws) that secure the support bracket 13 within the tubular member 4 so that the central hole 13a coincides with the central axis of the tubular member 4. Each fastener 6B is threaded into a threaded hole 13b of the support bracket 13 through an attachment hole 15 in the tubular member 4. The support bracket 13 is fixed at a predetermined position in the axial direction by fasteners 6C and 6D (e.g., nuts), but it is possible to omit the fastener 6D to facilitate maintenance after use.

[0030] As shown in Fig. 4, the helical screw 2 includes two screw sections 2A, 2A, each having a structure in which a helical blade is provided on the outer periphery of a cylindrical shaft, and a restricting section 2B, which is provided at the upper end and restricts the upward movement of the material to be stirred S. The screw 2 is passed through by a shaft 3 and is fixed to a predetermined position on the shaft 3 by two fasteners 6A, 6C. The helical screw 2 has upper and lower end faces 2C, 2D, which are in contact with the fasteners 6A, 6C. An upper through-hole 4A is provided below the upper end face 2C (restricting section 2B), and a lower through-hole 4B is provided above the lower end face 2D.

[0031] Furthermore, a support handle 21 is provided to facilitate handling during stirring and to enable the operator to grip it firmly. Reference numeral 22 denotes a spacer. The number of screw portions 2A is not limited to two. It is also possible to omit the support handle 21 and spacer 22 and hold the upper part of the cylindrical member 4 by hand during stirring. The support handle 21 can be made of synthetic resin or the like, but the material is not limited to synthetic resin or the like.

[0032] As shown in Figure 5, this stirring tool unit 1 has an impact driver D (power tool) connected to the upper end (connecting member 11) of the shaft 3, and by driving the impact driver D, the helical screw 2 fixed to the shaft 3 is rotated.

[0033] When performing the stirring operation, it is first necessary to insert the helical screw 2 housed in the cylindrical member 4 into the liquid object S in the container C that contains the liquid object S. This positions the entire helical screw 2 within the liquid object S. This positions the upper through-hole 4A below the liquid surface of the object S.

[0034] In this state, by rotating the shaft 3 with the impact driver D, the helical screw 2 rotates, and, for example, the material to be stirred S is sucked in through the lower end opening of the cylindrical member 4 or the lower through-hole 4B, flows upward between the cylindrical member 4 and the helical screw 2, and the upward flow is restricted by the restricting portion 2B, and is discharged to the outside through the upper through-hole 4A. The discharged material to be stirred S descends along the outer periphery of the cylindrical member 4, that is, between the inner wall surface of the container C and the outer periphery of the cylindrical member 4, and is again sucked in through the lower end opening of the cylindrical member 4 or the lower through-hole 4B. It is also possible to reverse the rotation direction of the shaft 3 so that the material to be stirred S is sucked in through the upper through-hole 4A and discharged to the outside through the lower end opening of the cylindrical member 4 or the lower through-hole 4B.

[0035] In this way, the material S can be efficiently stirred by rotating the helical screw 2 and circulating the material S between the inside and outside of the cylindrical member 4. At this time, both the upper through-hole 4A and the lower through-hole 4B are submerged in the material S, so there is no risk of air getting mixed into the material S during the stirring operation.

[0036] Since the upper and lower parts of the shaft 3 are supported by the cylindrical member 4, the structure prevents the shaft 3 from vibrating during the stirring operation, stabilizing the rotation of the shaft 3 and providing an advantage in increasing the stirring efficiency.

[0037] In this way, the stirring tool unit 1 is lightweight, compact, and easy to transport, and by connecting it to an electric tool, such as an impact driver D, it is possible to efficiently stir the object S to be stirred in the container C without manual labor and without mixing in air bubbles (air). In other words, air is not mixed in during stirring, and the inclusion of air bubbles in the object to be stirred is avoided.

[0038] The present invention is not limited to the above-described embodiment, and can be carried out with some modifications. An example is shown below.

[0039] (i) In the above-described embodiment, the flow generating member is a helical screw 2 having a structure in which helical blades are provided on the outer periphery of a cylindrical shaft portion. However, instead of this, a structure using multiple screw propellers 14 is also possible, as shown in Figures 6(a) and 6(b), for example. In this case, the screw propeller 14 is provided with five blades 14b protruding in a spiral shape around a cylindrical shaft portion 14a, and is fixed to the shaft 3 with two fasteners 6E (e.g., nuts) at a fixed interval. Note that the screw propeller 14 may have only one blade, and the number of blades 14b is not limited to five.

[0040] Furthermore, as in the above-described embodiment, a restricting section (corresponding to restricting section 2B) that restricts the upward movement of the material S to be stirred can be provided above the section where the screw propeller 14 is provided. Also, in order to restrict the material S from moving upward, it is possible to provide a structure in which, as shown in FIG. 8, multiple screw propellers 14' that cause a downward flow (screw propellers 14' attached upside down from the lower screw propeller 14) are provided above, preventing a reverse flow of the material S to be stirred (a flow upward from the vicinity of the through-hole 4A). In this case, two screw propellers 14' that cause a downward flow may be provided, and a screw section of the shape shown in FIG. 1 may be used.

[0041] (ii) The helical screw 2 is fixed to a predetermined position on the shaft 3 by two fasteners 6A and 6C, but by threading the helical screw 2 (screw portion 2A), the upper fastener 6A can be omitted because it can be positioned by the lower fastener 6C.

[0042] Similarly, the screw propeller 14 can be fixed without using two fixing devices 6E by threading the shaft portion 14a (center hole) of the screw propeller 14 and partially threading the lower portion 3B of the shaft 3 at a predetermined position.

[0043] (iii) When the material S is discharged from the upper through-hole 4A to ensure smooth circulation of the material S, it is possible to provide an elbow-shaped guide member 23 (e.g., made of synthetic resin) in the upper through-hole 4, as shown in Fig. 7, which actively guides the flow of the material S discharged from the upper through-hole 4A downward. This eliminates unnecessary flow of the material S, realizing smooth circulation of the material S.

[0044] In addition to or instead of the guide member 23 provided in the upper through-hole 4A, a guide member for guiding the flow of the material to be stirred S can be provided in the lower through-hole 4B.

[0045] (iv) The structure of the spiral screw 2 is a two-stage structure having two screw sections 2A, 2A (i.e., two screw components), but it can also be a three-stage or more structure having three screw sections (i.e., three or more screw components), or a one-stage structure having one continuous long screw section (i.e., one screw component).The structure of the spiral screw is not particularly limited as long as it is a structure that can stir the object to be stirred S.

[0046] (v) The stirring tool unit 1 can be used not only when transferring the object to be stirred S to a container C with a large agitator insertion opening as shown in Fig. 5, but also when the container has a small diameter agitator insertion opening, such as a 18L can, as long as the stirring tool unit 1 can be inserted through the small diameter agitator insertion opening, the object to be stirred S can be stirred with the agitator insertion opening stored in the small diameter container. In this case, by closing the agitator insertion opening with a lid such as a cap after use, the remaining object to be stirred S can be stored with the agitator insertion opening stored in the small diameter container.

[0047] (vi) In the above embodiment, the stirring tool unit 1 is configured to have one shaft 3 having a helical screw 2, but it can also be configured to have multiple shafts. In that case, the inner diameter of the tubular member can be increased to accommodate multiple shafts, or multiple tubular members each having one shaft can be connected together. [Explanation of symbols]

[0048] 1 Mixing tool unit 2. Helical screw (flow generating element) 2A screw part 2B Regulatory Department 2C Top surface 2D bottom surface 3 shafts 3A, 3B shaft part 4 Cylindrical member 4A, 4B through holes 5 Cover member 6A~6E Fixtures 7 Backflow prevention sleeve 8 Shaft support pipe 11 Connecting member 12 Support means 13 Support bracket 13a Center hole 14,14' screw propeller (flow generating element) 15 mounting holes 21 Support handle 22 spacer 23 Guide member

Claims

1. a shaft that is driven to rotate by a power tool; a connecting member attached to an upper end of the shaft and to which the power tool is detachably connected; a cylindrical member in which the shaft is rotatably housed and in which a plurality of through holes are provided at a lower portion in the axial direction and spaced apart from one another; A flow generating member is provided at the lower portion of the shaft, sandwiched between an upper fixture and a lower fixture, and corresponds to the through hole, and rotates in the material to be stirred to generate a flow of the material to be stirred in the axial direction; a backflow prevention sleeve made of silicone resin and provided on the outside of the shaft between the vicinity of the attachment portion of the connecting member and the upper fixing device; a cover member that closes the upper end opening of the cylindrical member and through which the upper portion of the shaft penetrates together with the backflow prevention sleeve; a shaft support pipe provided between an upper portion of the shaft and the cover member, the shaft being supported on the outside of the backflow prevention sleeve; a support means provided at a lower end of the cylindrical member and configured to rotatably support a lower portion of the shaft so that the central axis of the shaft is positioned on the central axis of the cylindrical member; A stirring tool unit characterized by being inserted into a container that holds the material to be stirred, rotating the shaft within the material to be stirred, and circulating the material between the inside and outside of the cylindrical member through the through hole, thereby stirring the material.

2. 2. The stirring tool unit according to claim 1, wherein the shaft support pipe extends further downward than the lower end of the lid member.

3. 3. The stirring tool unit according to claim 1, wherein the plurality of through holes are upper and lower through holes provided in portions of the flow generating member corresponding to the upper and lower ends thereof.

4. 2. The stirring tool unit according to claim 1, wherein the support means comprises a support bracket through which the lower portion of the shaft passes, and a fixture for fixing the support bracket within the tubular member so that the central axis of the shaft is positioned on the central axis of the tubular member.

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