Mixing tool unit

Abstract

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

Description

Technical Field

[0001] The present invention relates to a stirring tool unit used for stirring various solutions such as chemical solutions, powders, granules, and the like.

Background Art

[0002] There is known a device that utilizes the rotation of a screw for stirring an object to be stirred (see Patent Document 1). The above-described screw is rotatably inserted into a cylindrical casing, a motor for rotationally driving the screw is provided, a plurality of supply ports for the mixture to be stirred are formed in the casing, a supply device for the mixture to be stirred is provided at each supply port, a discharge port for the mixture to be stirred is formed in the casing, and the mixture to be stirred continuously supplied from each supply device is conveyed to the discharge port while being mixed by the stirring screw rotationally driven by the motor. It is used in a continuous mixing device configured as such.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The above screw is used as one of the components of a continuous mixing device and cannot be used for stirring the stirred material in a container for accommodating the object to be stirred.

[0005] The present invention provides a stirring tool unit that can be used for stirring the stirred material in a container for accommodating the object to be stirred.

Means for Solving the Problems

[0006] The invention of claim 1 is characterized by a stirring of the material to be stirred by circulating the material to be stirred between the inside and outside of the cylindrical member through the through holes, the material to be stirred being circulated between the inside and outside of the cylindrical member

[0007] In this way, by inserting the lower part of the cylindrical member housing the shaft (the part with the through-hole) into the material to be stirred (in the container), the rotation of the flow generating member (shaft) creates a flow in the material to be stirred. The material to be stirred is then circulated and stirred between the inside and outside of the cylindrical member through the through-hole. At this time, by ensuring that the part of the cylindrical member with the through-hole is inside the material to be stirred, air is not mixed in by the stirring, and the inclusion of air bubbles in the material to be stirred is avoided.

[0008] In this case, it is desirable that, as described in claim 2, a shaft support pipe is provided between the upper portion of the shaft and the lid member to support the shaft, and, as described in claim 3, the shaft support pipe extends further downward than the lower end of the lid member.

[0009] In this way, the shaft rotation is stabilized by the shaft support pipe.

[0010] As described in claim 4, it is desirable that the upper portion of the shaft is provided with a backflow prevention sleeve on the outside.

[0011] This prevents the agitated material from flowing back along the shaft.

[0012] As described in claim 5, it is desirable that a connecting member for connecting the power tool is provided at the upper end of the shaft.

[0013] This ensures a secure connection with the power tool.

[0014] As described in claim 6, it is preferable that the plurality of through holes are 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 material to be stirred can be efficiently circulated and stirred between the inside and outside of the cylindrical member through the through-hole.

[0016] As described in claim 7, the support means preferably comprises a support fitting through which the lower portion of the shaft passes, and a fixing device for fixing the support fitting inside the cylindrical member such that the central axis of the shaft is positioned on the central axis of the cylindrical member.

[0017] This way, a simple structure can be used to prevent the lower end of the shaft from wobbling. [Effects of the Invention]

[0018] The present invention has the following excellent effects: By inserting it into the material to be stirred, the rotation of the flow generating member (shaft) causes the material to be stirred to circulate between the inside and outside of the cylindrical member through the through hole of the cylindrical member housing the shaft, thereby stirring without entraining air. In other words, it is possible to avoid the inclusion of air bubbles in the material to be stirred through stirring. [Brief explanation of the drawing]

[0019] [Figure 1] Fig. 1(a) shows a longitudinal sectional view and Fig. 1(b) shows a sectional view taken along line A-A of Fig. 1(a), showing an embodiment of the stirring tool unit according to the present invention. [Figure 2] It is an explanatory view showing the components of the stirring tool unit, excluding the spiral screw, in a disassembled state. [Figure 3] Fig. 3(a) is a front view, Fig. 3(b) is a sectional view taken along line B-B of Fig. 3(a), Fig. 3(c) is a sectional view taken along line C-C of Fig. 3(a), and Fig. 3(d) is a side view, showing the cylindrical member. [Figure 4] It is a front view showing the spiral screw. [Figure 5] It is an explanatory view showing the state of use. [Figure 6] Fig. 6(a) is a view similar to Fig. 1(a) showing another embodiment, and Fig. 6(b) is an explanatory view of the screw propeller. [Figure 7] It is an explanatory view of the guide member. [Figure 8] It is a view similar to Fig. 1(a) showing another embodiment.

Embodiments for Carrying Out the Invention

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

[0021] Fig. 1 shows an embodiment of the stirring tool unit according to the present invention. Fig. 1(a) is a longitudinal sectional view, Fig. 1(b) is a sectional view taken along line A-A of Fig. 1(a), and Fig. 2 is an explanatory view showing the components of the stirring tool unit, excluding the cylindrical member and the spiral screw, in a disassembled state.

[0022] As shown in Figs. 1 and 2, the stirring tool unit 1 includes a shaft 3 having a spiral screw 2 (flow generating member). The main part of this shaft 3 is rotatably supported and housed within a cylindrical member 4 that is open at both the upper and lower ends and is cylindrical. Although the entire shaft 3 is a threaded rod, it is also possible to make only a part of it a threaded rod.

[0023] As shown in Figures 3(a) to 3(d), the cylindrical member 4 has two upper and two lower through holes 4A and 4B spaced apart in the axial direction. Specifically, the upper through holes 4A are located near the upper end of the helical screw 2, and the lower through holes 4B are elongated holes in the axial direction located at the lower end of the helical screw 2. The upper through holes 4A are offset by approximately 90 degrees in the circumferential direction of the cylindrical member 4 compared to the lower through holes 4B. The shape and number of the through holes 4A and 4B are not particularly limited; for example, the lower through holes can be round or the upper through holes can be elongated.

[0024] The upper through-hole 4A and the lower through-hole 4B are provided near the upper and lower ends of the helical screw 2 to ensure smooth suction and discharge due to the rotation of the helical screw 2.

[0025] The upper end opening of the cylindrical member 4 is closed by a lid member 5 with an inverted trapezoidal cross-section (for example, made of a resin or metal with chemical resistance properties such as silicone resin that does not corrode even when stirred with organic solvents, oils, acids, alkalis, etc.), and the upper end of the upper part 3A of the shaft 3 (the shaft portion above the spiral screw 2) passes through the center of this lid 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 Figure 5), which is an electric tool.

[0026] Furthermore, a backflow prevention sleeve 7 (for example, a resin or metal with chemical resistance that does not corrode even when stirred, such as organic solvents, oils, acids, alkalis, etc.) is provided in the upper part 3A of the shaft 3, specifically from near the mounting 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 mounting portion of the connecting member 11, but it can be shortened to a extent that prevents backflow.

[0027] Furthermore, a shaft support pipe 8 (for example, made of stainless steel) is provided between the upper portion 3A (backflow prevention sleeve 7) of the shaft 3 and the lid member 5 to support the shaft 3 and prevent it from wobbling. The shaft support pipe 8 extends from inside the lid member 5 to the outside below, firmly supporting the shaft 3 so that it does not wobble.

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

[0029] The support means 12 includes a cylindrical support fitting 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 fix the support fitting 13 inside the cylindrical member 4 so that the central hole 13a aligns with the central axis of the cylindrical member 4. Each fastener 6B is screwed into the threaded hole 13b of the support fitting 13 through the mounting hole 15 of the cylindrical member 4. The support fitting 13 is also fixed in a predetermined position in the axial direction by fasteners 6C, 6D (e.g., nuts), but the fasteners 6D can be omitted to facilitate maintenance after use.

[0030] As shown in Figure 4, the helical screw 2 has a structure in which helical blades are provided on the outer circumference of a cylindrical shaft, and includes a restricting part 2B provided at the upper end to restrict the upward movement of the material to be stirred S. The shaft 3 passes through it and is fixed to a predetermined position on the shaft 3 by two fasteners 6A and 6C. The helical screw 2 has upper and lower end surfaces 2C and 2D that come into contact with the fasteners 6A and 6C. An upper through hole 4A is provided below the upper end surface 2C (restricting part 2B), and a lower through hole 4B is provided above the lower end surface 2D.

[0031] Furthermore, a support handle 21 is provided to facilitate handling during stirring and to allow the operator to firmly grip it. 22 is a spacer. Note that the number of screw sections 2A is not limited to two. Also, the support handle 21 and spacer 22 can be omitted, and the stirring operation can be performed by holding the top of the cylindrical member 4 by hand. The support handle 21 can be manufactured using synthetic resin or the like, but its material is not limited to synthetic resin.

[0032] As shown in Figure 5, in this stirring tool unit 1, an impact driver D (electric tool) is 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, which is housed inside the cylindrical member 4, into the liquid material S contained in the container C. As a result, the entire helical screw 2 is positioned within the liquid material S. Consequently, the upper through-hole 4A is positioned below the liquid surface of the material S.

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

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

[0036] Since the upper and lower portions of the shaft 3 are supported by the cylindrical member 4, the structure prevents the shaft 3 from shaking during the stirring operation, resulting in stable rotation of the shaft 3, which is advantageous in improving stirring efficiency.

[0037] Thus, by using the stirring tool unit 1, which is lightweight, compact, and easy to transport, and can be connected to an electric tool, such as an impact driver D, the material to be stirred S in the container C can be efficiently stirred without manual work, without introducing air bubbles. In other words, air is not introduced through stirring, and the inclusion of air bubbles in the material to be stirred is avoided.

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

[0039] (i) In the embodiment described above, a helical screw 2 having a structure in which spiral blades are provided on the outer circumference of a cylindrical shaft is used as the flow generating member. However, instead, a structure using multiple screw propellers 14 is also possible, for example, as shown in Figures 6(a) and 6(b). In this case, the screw propeller 14 has five blades 14b that protrude spirally around a cylindrical shaft 14a and is fixed to the shaft 3 with two fasteners 6E (for example, nuts) at a certain distance apart. Note that the screw propeller 14 can also be made of only one blade, and the number of blades 14b is not limited to five.

[0040] Furthermore, a restricting section (corresponding to restricting section 2B) can be provided above the section where the screw propeller 14 is installed, similar to the embodiment described above, to restrict the upward movement of the material to be stirred S. In addition, to restrict the upward movement of the material to be stirred S, it is also possible to provide a structure that prevents backflow of the material to be stirred S (upward flow from the vicinity of the through hole 4A) by providing multiple screw propellers 14' (screw propellers 14' mounted in the opposite direction to the lower screw propeller 14) on the upper side to cause a downward flow, as shown in Figure 8. In this case, there may be as few as two screw propellers 14' that cause a downward flow, and a screw section with the shape shown in Figure 1 can also 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 the upper fastener 6A can be omitted by threading the helical screw 2 (screw portion 2A), as the lower fastener 6C can be used to position it.

[0042] Similarly, the screw propeller 14 can also be fixed without using two fasteners 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) If the stirring material S is to be discharged from the upper through-hole 4A so that the stirring material S can be circulated smoothly, then, as shown in Figure 7, for example, an elbow-shaped guide member 23 (for example, made of synthetic resin) can be provided in the upper through-hole 4 to actively guide the flow of the stirring material S coming out of the upper through-hole 4A downwards. This eliminates wasted flow of the stirring material S and ensures smooth circulation of the stirring material S.

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

[0045] (iv) The structure of the helical 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 single-stage structure having one continuous long screw section (i.e., one screw component). In addition, the structure of the helical screw is not particularly limited as long as it can stir the material S to be stirred.

[0046] (v) The stirring tool unit 1 can be used not only when the material to be stirred S is transferred to a container C with a large stirring port as shown in Figure 5, but also when the material to be stirred S is in a container with a small diameter stirring port, such as a 18-liter can. As long as the stirring tool unit 1 can be inserted through the small diameter stirring port, the material to be stirred S can be stirred while the stirring port is housed inside the small diameter container. In this case, after use, the stirring port can be closed with a cap or other lid, allowing the remaining material to be stirred S to be stored with the stirring port housed inside the small diameter container.

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

[0048] 1. Stirring tool unit 2. Helical screw (flow generating member) 2A Screw section 2B Regulatory Department 2C Top surface 2D bottom surface 3 shafts 3A, 3B Shaft section 4. Cylindrical member 4A, 4B Through holes 5. Lid 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 component) 15 mounting holes 21 Support handle 22 Spacers 23 Guide member

Claims

1. A shaft that is detachably connected to a power tool and rotated by the power tool, A flow generating member provided on the shaft rotates within the material to be stirred, thereby generating a flow of the material in the direction of the rotation axis, A cylindrical member having a shaft that is rotatably housed and having a plurality of through holes spaced apart in the axial direction, A lid member that closes the upper end opening of the cylindrical member and through which the upper part of the shaft passes the center, The cylindrical member comprises a support means provided at the lower end of the cylindrical member, which rotatably supports the lower portion of the shaft such that the central axis of the shaft is located on the central axis of the cylindrical member, A stirring tool unit characterized by stirring the material to be stirred by circulating the material to be stirred between the inside and outside of the cylindrical member through the through hole.

2. The stirring tool unit according to claim 1, wherein a shaft support pipe for supporting the shaft is provided between the upper portion of the shaft and the lid member.

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

4. The stirring tool unit according to claim 2 or 3, wherein the upper portion of the shaft is provided with a backflow prevention sleeve on the outside.

5. The stirring tool unit according to any one of claims 1 to 4, wherein a connecting member for connecting the electric tool is provided at the upper end of the shaft.

6. The stirring tool unit according to any one of claims 1 to 5, wherein the plurality of through holes are upper and lower through holes provided in portions corresponding to the upper and lower ends of the flow generating member.

7. The stirring tool unit according to any one of claims 1 to 7, wherein the support means comprises a support fitting through which the lower portion of the shaft passes, and a fixing device for fixing the support fitting inside the cylindrical member such that the central axis of the shaft is positioned on the central axis of the cylindrical member.

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