CN1021076C

CN1021076C - Stirrer capable of forward or backward rotating and reciprocally moving

Info

Publication number: CN1021076C
Application number: CN 91111095
Authority: CN
Inventors: 孙建中; 潘勤敏; 顾培韵; 潘祖仁
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 1991-11-22
Filing date: 1991-11-22
Publication date: 1993-06-02
Anticipated expiration: 2006-11-22
Also published as: CN1061267A

Abstract

The present invention relates to a device and a stirrer with positive and reverse rotation and reciprocating movement. An input shaft connected by an eccentric arm is connected with another eccentric arm and a swinging shaft by a connecting rod. A gear on the swinging shaft enables a rotating shaft to do positive and reverse rotation and movement through a gear transmission mechanism. An external spline on the rotating shaft cooperates with an internal spline on a lead screw which is in mesh with a nut, and a paddle is arranged at the output end of the lead screw, and thereby, the rotating shaft can do complicated positive and reverse rotation and upward and downward reciprocating movement. The material stirred by the present invention forms an axial flow and a radial flow in a non-steady state which is favorable for rapidly mixing. The present invention can be widely used in industries, such as chemical reactor, paint, foods, medicine, etc.

Description

Stirrer capable of forward or backward rotating and reciprocally moving

The present invention relates to have the device of the double moving movement of rotation, the double stirrer that moves back and forth motion of especially a kind of positive and negative rotation.

At home and abroad in the prior art field, the device that material is stirred generally has following two classes, one class is as the device that relates to the positive and negative rotation of stirring shaft energy in day this film paulownia five Lang Fabiao " the positive and reverse return stirrer transition " paper, but the angle of its positive and negative rotation is no more than 90 °, though the efficient height that the stirrer that the stirrer that is made of this device rotates than traditional single direction mixes, but because the angle of positive and negative rotation is less, and can not back and forth move up and down, limit the raising of mixing efficiency.Another kind of as China Zhu Xiu woods at " China Synthetic Rubber Industry " (№ .6,1984), relate to the device that a kind of revolution that is used for stirrer is held concurrently and back and forth moved up and down in " turning round power consumpiton and the mixing efficiency held concurrently when moving stirrer mixing non-Newtonian fluid up and down " paper of delivering, it is in constant sense of rotation, produce and periodically back and forth move up and down, make paddle in the material that is stirred, form comparatively complicated motion, mixing efficiency is greatly improved, but because the sense of rotation of the stirrer that this device constitutes is changeless, do not produce positive and negative rotatablely moving, limited mixing efficiency yet and further improved.

The objective of the invention is to be: it provides a kind of can make the positive and negative rotation reciprocating device of holding concurrently, rotating shaft is in positive and negative rotation, rotating shaft back and forth moves up and down, if this device is constituted stirrer, can be used for multiple material is stirred, be applicable in the high stirrer of range of viscosities broad and mixing efficiency.

The technical solution used in the present invention is: an end is housed in casing is connected the input shaft that (can be motor or the power source through slowing down), the other end be connected with eccentric arm with power source, the connecting rod that is connected with eccentric arm is by the eccentric arm of another different length, be connected with an end of swing axis, the gear that links to each other with swing axis makes rotating shaft can obtain positive and negative rotatablely moving by gear drive again.External splines on the rotating shaft end matches with the internal spline of screw mandrel endoporus, and the spiral chute of screw mandrel and the ball engagement that is contained in the nut on the casing transverse slat back and forth move up and down to reach generation.

The invention will be further described below in conjunction with accompanying drawing.

The structure principle chart of Fig. 1, this device;

The A-A sectional view of Fig. 2, this device.

As shown in Figure 1 and Figure 2, base 1 is used for installing, bearing 18,20 respectively is housed up and down also compresses the input axle 19 that also respectively is installed on casing transverse slat 13 and the bearing block 12 with gland 17, to rotatablely move from the constant of motor, by eccentric arm 30, connecting rod 31 and eccentric arm 29, make bearing 15,11 and compress and respectively be installed in swinging axle 16 on casing transverse slat 13 and the bearing block 12 with gland 14 and obtain periodic positive and negative rotation and move respectively is housed up and down. This kind positive and negative rotation is moved, pass to the gear drive that the gear 22 that is contained on the bridge shaft 21, gear 23 and gear 24 form by the gear 10 that links to each other with swinging axle 16, linking to each other with gear 24 and being installed in respectively bearing block 25, casing transverse slat 9 by two bearings 26,8 obtains the rotation angles with the rotating shaft 27 of external splines and moves for the positive and negative rotation more than ± 540 °. Casing transverse slat 13, bearing block 12, bearing block 25, casing transverse slat 9 all are fixed on the box side 28. Screw mandrel 6 with internal spline screws in the nut 7 that is fixed on the casing transverse slat 9, when rotating shaft 27 is rotated in a clockwise direction, transmission by means of external splines in the rotating shaft 27 and screw mandrel 6 internal splines, make screw mandrel 6 along the same direction of rotation rotation of rotating shaft 27, be meshed with three balls 4 on the nut and have three helicla flutes on the screw mandrel outer cylinder, ball 4 is fixed in the nut bore by spring 3, screw 2, and its purpose is the friction that reduces when back and forth moving up and down. When rotating shaft 27 turned over 540 °, the motion that screw mandrel 6 is rotating forward stopped, and namely arrived the maximum position of stroke. When then axle 27 beginnings were counterclockwise rotated, screw mandrel 6 backward motion with regard to opposite spin, and when rotating shaft 27 turned over 540 ° in the other direction, the motion that screw mandrel 6 is rotating backward stopped, and namely arrives the minimum position of stroke, has finished the motion in a cycle. Then just begin the cycle movement of repetition. If a shaft 5 is installed and is equipped with energy at the output of screw mandrel 6 Be applicable to the blade of the suitable pattern of different material and range of viscosities, just can have consisted of the positive and negative motion reciprocating mixer of holding concurrently.

Embodiment 1, motor is linked to each other with the input shaft of this device by retarder, on the screw mandrel output terminal, adorn a stirring shaft, quadrature is installed two two leaf triangle oars on stirring shaft, a ribbon (shape of cross section of triangle oar is equilateral triangle, blade hollow) is installed between two triangle oars, and stirrer is placed in the vertical stirring chest.The stirrer of Gou Chenging is used for the coating mixing that viscosity is 1～50,000 Chan pool thus, obtains the good mixing effect.

Embodiment 2, and with stirrer among the embodiment 1 and the horizontal installation of stirring chest, blade changes two-layer 12 leaf modification plectane oars into, and the stirrer of Gou Chenging has good gas-liquid surface and upgrades and mixed effect as gas-liquid reactor thus.

The present invention compared with prior art its advantage is:

Mix device, because having obtained axial flow, the radial flow that material forms that be stirred that complicated positive and negative rotation mixes on holding concurrently back and forth in the groove, stirrer paddle all goes after profit or gain all the time in the rapid mixing of material, if when being stirred the viscosity of material and being 1～10 scope, adopt the agitator of this device, required incorporation time obviously shortens than between existing. The agitator of this kind device it can extensive use in the industries such as chemical reactor, medicine.

Claims

1, a kind of positive and negative rotation reciprocating stirrer of holding concurrently, it is characterized in that: an end is housed in casing is connected with power source, the input shaft [19] that the other end is connected with eccentric arm [29], the connecting rod [31] that is connected with eccentric arm [29] is connected with an end of swing axis [16] by the eccentric arm of another different length, the gear [10] that fuses with swing axis [16] passes through gear drive, make rotating shaft [27] obtain positive and negative rotatablely moving, external splines on rotating shaft [27] end matches with the internal spline of screw mandrel [6] endoporus, the stirring shaft [5] of the output terminal dress band blade of screw mandrel [6], the spiral chute of screw mandrel be contained in casing transverse slat [9] on nut in ball be meshed, back and forth move up and down to reach generation.

2, stirrer according to claim 1, it is characterized in that: at the output terminal dress stirring shaft [5] of screw mandrel [6], go up quadrature at stirring shaft [5] two blades (as the triangle oar) are installed, a ribbon is installed between two blades, and this stirrer is placed in the vertical stirring chest.

3, stirrer according to claim 1 is characterized in that: at the output terminal dress stirring shaft [5] of screw mandrel [6], go up installation blade (as two-layer 12 leaf modification plectane oars), the horizontal installation of stirrer and stirring chest at stirring shaft [5].