CN2183815Y

CN2183815Y - Mixer

Info

Publication number: CN2183815Y
Application number: CN 94227581
Authority: CN
Inventors: 于吉元
Original assignee: Baoshan Iron And Steel Group Co ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 1994-01-20
Filing date: 1994-01-20
Publication date: 1994-11-30
Anticipated expiration: 2004-01-20

Abstract

The utility model discloses a sand lime proof water mixer, which is used on a sewage tank. A mixer is enclosed by a casing with multiple nodes, and a water sealed chamber is arranged between a mixing impeller and the casing arranged at the lower end of a mixing shaft in order to prevent the invasion of sand lime water. Industrial soft water is led into a water inlet pipe to form positive pressure in a sealed chamber formed by the casing with multiple nodes, and the intrusion of sand lime water can be prevented when the sealed ring of the water sealed chamber is worn out. The industrial soft water can overflow from the water outlet pipe of the casing arranged on the upper part of the water sealed chamber. Bearing seats are all arranged at the both ends of each node of the casing, the bearing seats are matched with a mixing shaft through a bearing arranged on the bearing seats in order to increase the supporting points of the mixing shaft, the shaft diameter of the mixing shaft can be reduced, and the vibration of the mixing shaft can be reduced.

Description

Mixer

The utility model relates to the agitator of dedusting sewage groove with anti-sand-lime water.

The a large amount of dust that produce in the factory and enterprise production process generally are to use cleaner and these dust are entered in the sump, prevent to the pollution of environment with to operating personnel's harm.Contain in the sewage of dust at these, contain in various degree grit and impurity,, will cause the difficulty of cleaning sump if the impurity in these sewage (promptly containing sand-lime water) is deposited at the bottom of the sump.In order to solve the problem that impurity is deposited on bottom land, normally in sump by adorning an agitator, utilize the stirring of agitator arm to make to contain sand-lime water and be in suspended state, at the bottom of avoiding sand-lime impurity etc. to be deposited on sump, be applied to the agitator (especially at large-scale sump) in the sump, usually employing suspension agitator on the shaft coupling of the lower end of motor and speed reducer vertically is inserted in the sump, utilize the rotation of the agitator arm of agitator lower end, impurity such as sand-lime are suspended in the sewage.And this agitator length is longer, and its stirring diameter of axle requires bigger, and the long more then axle head swing of shaft is big more, vibrates also corresponding bigger.For swing and the vibration problem that solves agitator, at the lower end of agitator and bottom land by the bearing block of the dress (see figure 2) that is connected, but such structure, not only by dress inconvenience, and easily corrode bottom end bearing part (Fig. 2 39) owing to contain sand-lime water, cause bearing wear big, in very short time, just need to change bearing, and such structural repair is also extremely inconvenient.The utility model is that a kind of diameter of axle is less, vibrates very for a short time, and can prevent the agitator of bearing and shaft wearing and tearing.

Agitator of the present utility model is by in the shaft periphery more piece overcoat being set, and is provided with cartridge housing that bearing and shaft match to increase the supporting-point of shaft between two overcoats; Between the cartridge housing of shaft foot and agitator arm, water tight compartment is set; And in more piece overcoat and water tight compartment, the feeding industrial soft water forms the loop by the outlet pipe on the cartridge housing of top, prevents to contain the intrusion of sand-lime water, reduces to become the diameter of axle, the agitator of vibrationless anti-sand-lime water.

The mixing tool body structure of anti-sand-lime water of the present utility model is seen Fig. 1, shaft (4) is connected with cycloidal planetary gear speed reducer (2), motor (1) by shaft coupling (3), cycloidal planetary gear speed reducer and motor are connected with the support of agitator by skirt (5), upper bearing (metal) shell (6), with fixing whole agitator.In the shaft periphery, more piece overcoat (9 and 12) also is set, outside every joint, put cartridge housing (6,25 and 21) all is set, and match by bearing (7,8,11 and 22) and shaft.Locating near agitator arm (19), be provided with a water tight compartment (15), in order to prevent from the containing in the sand-lime water intrusion overcoat of sump, have shell (16), gland (18) and sealing ring (17) to wait in the water tight compartment end to realize sealing.By the overcoat of such multi-section type, make shaft form fulcrum more than and support, with this corresponding swing that reduces the shaft diameter and reduce shaft, thereby reach the purpose that reduces the shaft vibration.

In order to prevent shaft in use for some time, because the wearing and tearing of water tight compartment sealing ring (17) contain in sand-lime water intrusion water tight compartment and the overcoat.Therefore, at the inner water inlet pipe (Fig. 1 14) of installing of overcoat, make the industrial soft water source inject overcoat, simultaneously, by the hole of offering on each cartridge housing (Fig. 16,25,21), the outlet pipe (28) that is provided with via upper bearing (metal) shell (Fig. 1 6) and overflowing makes inflow and spill-out be in balance by the control valve on the water inlet pipe and adorns attitude, simultaneously the circuit water alarm device can be installed on outlet pipe, with the reliability of monitoring seal water system.

Agitator of the present utility model can reduce the wearing and tearing of shaft upper bearing (metal) and shaft widely, has prolonged the time between overhauls(TBO) and the service life of agitator.

Concrete structure of the present utility model and embodiment.

Fig. 1: the structure chart of anti-sand-lime water agitator

1, motor 2, cycloidal planetary gear speed reducer 3, shaft joint 4, shaft 5, skirt

6, upper bearing (metal) shell 7, bearing 8, bearing 9, last overcoat 10, bottom bracket 11, bearing

12, following overcoat 13, step 14, water inlet pipe 15, water tight compartment 16, shell

17, sealing ring 18, gland 19, agitator arm 20, oil sealing 21, lower bearing shell

22, bearing 23, oil sealing 24, oil sealing 25, middle (center) bearing shell 26, oil sealing 27, oil sealing

28, outlet pipe 29, oil sealing

Fig. 2: the agitator structure figure (known technology) of band lower support

30, motor 31, cycloidal planetary gear speed reducer 32, shaft 33, shaft coupling 34, skirt

35, cartridge housing 36, bearing 37, bearing 38, agitator arm 39, lower bearing assembly

Embodiment:

In large-scale steam power plant sump, by the agitator that an anti-sand-lime water is housed, its main body is the shaft of a φ 85 * 3800, and this axle is connected with Y160M-4 type motor, XLD11-6-1/9 type single-stage cycloidal pin gear speed reducer by B5 elastic cylindrical pin shaft coupling perpendicular to sump.Motor, reductor are connected with skirt (being supporting seat), and by on the bracing frame that is loaded on sump top (being frame).In the upper bearing (metal) shell of skirt bottom, match by 120# single-row radial ball bearing and 38220# angular contact ball bearing and shaft.The space of water tight compartment to a sealing of shaft formation saved by two joint overcoats and in lower portion at shaft, because the sealing of overcoat and water tight compartment makes to contain in the sump in the unlikely infiltration overcoat of sand-lime water.Have only the agitator arm of shaft end directly to contact, because the rotation of agitator arm is suspended in the sewage sand-lime in the sewage with sewage.Between overcoat and shaft, be provided with water inlet pipe; (being the skirt bottom) is provided with the outlet pipe of spilling water and in the upper end of shaft; when forming balance with water yield in the full overcoat of industrial soft water stream; when even the water tight compartment airtight and watertight padding is worn and torn owing to long-term operation; also can guarantee to contain in the unlikely infiltration overcoat of sand-lime water, thereby protect shaft and support bearing.

The agitator that turns round in containing sand-lime water adopts the bearing of this spline structure than the bearing that adopts band lower support agitator, and its life-span can be improved 50 times.

Claims

1, the agitator of anti-sand-lime water, the shaft that vertically connects agitator by motor by decelerator, shaft coupling, an agitator arm is installed in the bottom of shaft, the shaft end is installed in the bearing block that is fixed on bottom of gullet, the agitator of anti-sand-lime water of the present utility model, it is characterized in that this agitator is by in the shaft periphery more piece overcoat being set, the strong point of shaft being set between two overcoats; Between the agitator arm of the shaft lower bearing strong point and shaft lower end, water tight compartment is set; In more piece overcoat and water tight compartment, feed water inlet pipe, and on the cartridge housing of every joint overcoat, establish gap, connect spilling water forms current with outlet pipe path at upper bearing shell place.

2, the agitator of anti-sand-lime water according to claim 1 is characterized in that, the end that reaches overcoat between two overcoats is equipped with cartridge housing, and is matched with shaft by corresponding bearing.

According to the agitator of the described anti-sand-lime water of claim 1～2, it is characterized in that 3, the sealing of water tight compartment is the sealing ring that adopts the folder fabric.

According to the agitator of the described anti-sand-lime water of claim 1～3, it is characterized in that 4, the water inlet pipe of industrial soft water passes more piece and is set to water tight compartment outward in the feeding overcoat.