CN101941756A

CN101941756A - Submersible mixer with cutting function

Info

Publication number: CN101941756A
Application number: CN2010102562433A
Authority: CN
Inventors: 何智锋; 徐乃江; 魏汤尧
Original assignee: ZHEJIANG FENGQIU PUMP CO Ltd
Current assignee: Zhejiang fengball Kerry Pump Industry Co., Ltd.
Priority date: 2010-08-16
Filing date: 2010-08-16
Publication date: 2011-01-12
Anticipated expiration: 2030-08-16
Also published as: CN101941756B

Abstract

The invention discloses a safe and reliable submersible mixer with cutting function, which can effectively prevent the winding of dirt and avoid the motor overload, and has favorable mechanical sealing. The mixer comprises a submersible motor, a rotation shaft arranged at the output shaft end of the submersible motor, a bearing seat arranged at the peripheral region of the rotation shaft, a mechanical sealing seat arranged below the bearing seat, a propeller fixedly connected with the rotation shaft, and a cutting device consisting of a fixed knife and a rotary knife in clearance fit, wherein the fixed knife is arranged on the mechanical sealing seat while the rotary knife is arranged on the propeller; and a cutting area is arranged at the inlet of the propeller. The invention is suitable for the submersible mixer.

Description

The diving mixer of band cutting function

Technical field

The present invention relates to a kind of sewage disposal device, relate in particular to a kind of diving mixer.

Background technology

In the prior art, diving mixer mainly is divided into and mixes stirring-type diving mixer and push flowing diving mixer, be mainly used in the modern Sewage Plant biochemical reaction tank, diving mixer mainly act as stirring, plug-flow, suspension, homogenizing, and prevent the mud deposition of dirt.Characteristics such as existing diving mixer has compact construction, thrust is big, stirring region is broad, convenient operating maintenance, thereby in sewage treatment project, be widely used.

But the application on industrial and mining enterprises and agricultural environmental protection along with the in-depth of sewage treatment process and the expansion of Application Areas, particularly diving mixer, existing diving mixer mainly has the following disadvantages or defective:

1, the particularly fibrous dirt of dirt easily twines, and causes motor overload;

2, granule foreign easily enters the mechanical seal chamber, causes mechanical seal fragile.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of dirt that can effectively prevent and twines, avoids the diving mixer of good, the safe and reliable band cutting function of motor overload, mechanical seal.

In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:

The present invention includes submersible machine, be located at the rotating shaft of submersible machine output axle head, the bearing support of being located at the rotating shaft periphery, the mechanical sealing base of being located at the bearing support below, the propeller of fixedlying connected with rotating shaft, also comprise cutting unit, described cutting unit is made up of the dead knife and the rotating knife of running fit, described dead knife is located on the mechanical sealing base, described rotating knife is located on the propeller, and cutting zone is positioned at water screw ingress.

As preferably, week evenly be provided with slot in the described dead knife, it is shaped as the semicircular opening type, and the quantity of described slot is 12～24.

As preferably, described rotating knife periphery evenly is provided with water-flowing trough, and the quantity of described water-flowing trough is 3～5, and the quantity of described water-flowing trough and the quantity of the slot on the dead knife is prime number each other.

As preferably, described rotating knife peripheral end is provided with two symmetric guide rings, and the axial inclination of described guide ring is 40～60 °.

As preferably, described guide ring side is parabolic shape, and its direction of a curve is consistent with the submersible machine sense of rotation.

The present invention compared with prior art has following outstanding advantage and unusual effect:

1, can prevent effectively that dirt from twining, avoiding motor overload.Because the present invention is provided with cutting unit in water screw ingress, can effectively fibrous dirt be shredded, thereby avoid water screw to be twined by dirt, make motor avoid taking place the overload phenomenon.

2, mechanical seal is good, safe and reliable.Because the present invention is provided with the cutting unit of being made up of the dead knife and the rotating knife of running fit in water screw ingress; dead knife and rotating knife tolerance clearance are less; it is indoor that dirt is difficult for entering mechanical seal; and rotating knife is provided with the side and is parabolic guide ring; being convenient to dirt dishes out toward periphery; can not pile up, thereby protect mechanical seal effectively, make safe and reliable to operation at cutting zone.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structure for amplifying synoptic diagram of dead knife among Fig. 1;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the structure for amplifying synoptic diagram of rotating knife among Fig. 1;

Fig. 5 is the left view of Fig. 4.

Embodiment

The present invention is described in further detail below in conjunction with the drawings and the specific embodiments:

As shown in Figure 1: the preferred embodiment of the present invention one: comprise submersible machine 1, be located at submersible machine 1 output axle head rotating shaft 2, be located at rotating shaft 2 peripheries bearing support 3, be located at the mechanical sealing base 5 of bearing support 3 belows, the propeller 6 of fixedlying connected with rotating shaft 1, also comprise cutting unit, cutting unit is made up of with rotating knife 8 dead knife 7 of running fit, dead knife 7 is located on the mechanical sealing base 5, rotating knife 8 is located on the propeller 6, and cutting zone is positioned at water screw 6 ingresss.

Dead knife 7 links together by screw 20 and mechanical sealing base 5, bearing support 3, rotating knife 8 is connected as a single entity by wringing fit and water screw 6, water screw 6 is coaxial with submersible machine 1, during work, submersible machine 1 drives water screw 6 rotations, sewage enters water screw 6 inlet side by blower inlet casing 30 guiding, and axially flows out from water screw 6 outlet limits, and the current that water screw 6 produces have the intensive mixing effect.

Extremely shown in Figure 5 as Fig. 2: week evenly be provided with slot 9 in the dead knife 7, it is shaped as the semicircular opening type, and the quantity of slot 9 is 12, adopts this structure to help the dirt cutting evenly, and running is steady; Rotating knife 8 peripheries evenly are provided with water-flowing trough 10, and the quantity of water-flowing trough 10 is 3 on the rotating knife 8, and the quantity of the slot 9 on the quantity of water-flowing trough 10 and the dead knife 7 is prime number each other, both can increase the cutting number of times, also can prevent the generation of common rolling phenomenon; Rotating knife 8 peripheral ends are provided with two

symmetric guide rings

11,12, and the axial inclination of

guide ring

11,12 is 40 °, and

guide ring

11,12 sides are parabolic shape, and its direction of a curve is consistent with submersible machine 1 sense of rotation.

The preferred embodiment of the present invention two: basic structure is identical with preferred embodiment one, and the quantity of different is slot 9 is 18, and the quantity of water-flowing trough 10 is 5 on the rotating knife 8, and the axial inclination of

guide ring

11,12 is 50 °.

The preferred embodiment of the present invention three: basic structure is identical with preferred embodiment one, and the quantity of different is slot 9 is 24, and the quantity of water-flowing trough 10 is 5 on the rotating knife 8, and the axial inclination of

guide ring

11,12 is 60 °.

Among the present invention because dead knife 7 and rotating knife 8 running fit, and the gap is less, dirt is before entering water screw 6 inlet side, the

guide ring

11,12 that at first is rotated cutter 8 is introduced cutting zones and is cut, slot 9 quantity on the dead knife 7 are more, be 12-24, water-flowing trough 10 quantity on the rotating knife 8 are 3～5, therefore be cut nearly more than 300 times by dirt per second kind of the present invention, thereby good cutting effect, dirt is effectively shredded, thereby avoids dirt winding screw oar 6 effectively, prevents motor overload.

In addition, because dead knife 7 is less with rotating knife 8 tolerance clearances, dirt is difficult for entering in the mechanical seal chamber 5, has effectively protected mechanical seal; The setting of

guide ring

11,12 on the rotating knife 8 simultaneously; and

guide ring

11,12 sides are parabolic shape; direction of a curve is consistent with sense of rotation; being convenient to dirt like this dishes out outward; can not pile up at cutting zone; can not enter in the mechanical seal chamber 5 simultaneously, protect mechanical seal effectively, prevent the generation of submersible machine drainage.

Claims

1. diving mixer with cutting function, comprise submersible machine, be located at the rotating shaft of submersible machine output axle head, the bearing support of being located at the rotating shaft periphery, the mechanical sealing base of being located at the bearing support below, the propeller of fixedlying connected with rotating shaft, it is characterized in that also comprising cutting unit, described cutting unit is made up of the dead knife and the rotating knife of running fit, described dead knife is located on the mechanical sealing base, described rotating knife is located on the propeller, and cutting zone is positioned at water screw ingress.

2. the diving mixer of band cutting function according to claim 1 is characterized in that week evenly being provided with slot in the described dead knife, and it is shaped as the semicircular opening type, and the quantity of described slot is 12～24.

3. the diving mixer of band cutting function according to claim 2 is characterized in that described rotating knife periphery evenly is provided with water-flowing trough, and the quantity of described water-flowing trough is 3～5, and the quantity of described water-flowing trough and the quantity of the slot on the dead knife is prime number each other.

4. the diving mixer of band cutting function according to claim 1 is characterized in that described rotating knife peripheral end is provided with two symmetric guide rings, and the axial inclination of described guide ring is 40～60 °.

5. the diving mixer of band cutting function according to claim 4 is characterized in that described guide ring side is parabolic shape, and its direction of a curve is consistent with the submersible machine sense of rotation.