CN110732255A

CN110732255A - Hazardous waste material mixer

Info

Publication number: CN110732255A
Application number: CN201911119167.9A
Authority: CN
Inventors: 刘庆和; 王建军; 刘云熇; 王守仁
Original assignee: Laiwu Dezheng Environmental Protection Technology Co Ltd
Current assignee: Laiwu Dezheng Environmental Protection Technology Co Ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-01-31

Abstract

The invention discloses an dangerous waste material stirrer which comprises a rack, a stirring barrel, a suspension component, a stirring shaft, a driving device, a rotating cover and blades, wherein the stirring barrel is arranged on the rack and is constructed in a vertical type, the opening of the stirring barrel is upward, the suspension component is arranged on the rack and extends into the stirring barrel, the stirring shaft is arranged at the lower end of the suspension component through a rotating pair with a horizontal rotating axis, the tail end of the stirring shaft forms a stator, a stator winding is formed on the stator, the driving device is arranged on the suspension component and drives the stirring shaft to swing in a vertical plane with the rotating axis as a normal line based on the rotating pair, the rotating cover is used as a rotor and assembled with the stator in a liquid-tight manner to form a motor, magnets or magnetic steel are arranged in the rotating cover, the power cables are connected to the stator along the suspension component and the stirring shaft, and the blades are arranged on the rotating cover, and the.

Description

Hazardous waste material mixer

Technical Field

The invention relates to an dangerous waste material stirrer.

Background

Hazardous Waste, namely Hazardous Waste (Hazardous Waste), is generated and discharged in the industrial production process, the annular ratio of the Hazardous Waste is gradually increased along with the development of the industry, the Hazardous Waste is produced in the world by up to 3.3 hundred million tons according to incomplete statistics in 2018, and the industrial developed countries have defined the Hazardous Waste as 'political Waste'.

Regarding the treatment of hazardous wastes, in the conventional realization, an environmental protection company needs to make hazardous waste materials fed according to a calculated proportion before handling the hazardous wastes and entering a rotary kiln, and then uniformly stir the proportioned materials before entering a furnace.

An environmental protection company for processing hazardous waste tries to mix the aforesaid hazardous waste materials uniformly in a more standardized way, and typically, for example, chinese patent document CN205361165U discloses stirring tank for harmless processing of industrial hazardous waste liquid, which includes tanks, and is adapted to the tanks and provided with three stirring devices in two sets, wherein, the stirring components of stirring devices in sets are offset, and the stirring components of two stirring devices in sets are arranged in the middle to achieve relatively sufficient stirring.

In addition, the stirring devices used in chinese patent document CN205361165U all adopt a structure that a stirring component is directly mounted on a stirring shaft, and the stirring component has a very large moment of resistance to the stirring shaft during operation, and has a very high requirement on the output torque of an adapted motor.

Chinese patent document CN208994382U discloses a stirring system for dangerous liquid waste storage tanks, in which the entire tank bodies are also tanks with relatively large depth (relatively large length-diameter ratio), two sets of stirring blades are adapted, and sets are provided at the lower end and the middle part of the stirring blades.

In addition, the main reason that influences agitating unit overall arrangement and stirring mode still lies in that current agitating unit's drive division all sets up outside the agitator tank, and agitating unit passes through the (mixing) shaft and intervenes in the agitator tank, and the (mixing) shaft can only be configured to the straight axle based on rotary motion, has restricted agitating unit structural configuration's flexibility greatly.

Disclosure of Invention

The invention provides dangerous waste material mixers which adopt a single stirring device and can also adjust the stirring depth.

According to an embodiment of the present invention, there is provided kinds of hazardous waste material mixers, including:

a frame;

the stirring barrel is arranged on the frame and is constructed into a vertical stirring barrel, and the opening of the stirring barrel is upward;

the suspension component is arranged on the frame and extends into the stirring barrel;

the stirring shaft is arranged at the lower end of the suspension part through a rotating pair with a horizontal rotating axis, the tail end of the stirring shaft forms a stator, and a stator winding is formed on the stator;

the driving device is arranged on the suspension component and drives the stirring shaft to swing in a vertical plane taking the rotation axis as a normal line based on the rotating pair;

the rotating cover is used as a rotor and is assembled with the stator revolving liquid in a sealing way to form a motor, and a magnet or magnetic steel is arranged in the rotating cover;

the power cable is connected to the stator along the suspension part and the stirring shaft; and

a blade mounted on the rotating cowl.

In the hazardous waste material blender, optionally, the suspension part is a linear motion pair.

Optionally, the linear motion pair is a hydraulic cylinder, a nut screw pair or a rack and pinion pair.

Optionally, a cylinder body seat part of the hydraulic cylinder is mounted on the rack in an upper position, a head is reserved at the lower end of a push rod of the hydraulic cylinder, and a corrugated pipe is assembled between the head and the lower end of the cylinder body;

correspondingly, the upper end of the corrugated pipe is in liquid-tight fit with the cylinder body, and the lower end of the corrugated pipe is in liquid-tight fit with the end head.

Optionally, the connection between the upper end of the corrugated pipe and the cylinder body is a flange connection;

the lower end of the corrugated pipe is matched with the end head through a shaft sleeve and is fixedly connected with the end head through a lateral set screw.

Optionally, the rack forming the rack-and-pinion gear is of a three-segment structure, the middle segment is a rack, and the other two segments are polished rods, wherein the polished rod positioned above the rack forms a guide rod to be guided to a guide sleeve configured on the rack;

another light rod is the portion for the overhanging part to penetrate into the material being stirred.

Optionally, the driving device is a servo motor.

Optionally, the rotating cover is an end-sealed barrel-type cover, the barrel-type cover is sleeved on the stator from an opening end of the barrel-type cover, and the opening end is sealed by an end cover;

the end cover is in liquid sealing fit with the stirring shaft.

Optionally, the liquid-tight fit between the end cap and the stirring shaft is:

stage seal, spiral seal;

second-stage sealing, and framework shaft sealing;

third stage sealing, spiral sealing.

Optionally, the sealing end of the barrel casing is a conical head.

Different from the existing mode of directly using the stirring shaft to extend into the stirring barrel, in the embodiment of the invention, suspension parts are provided, the suspension parts extend into the stirring barrel, the stirring shaft is arranged at the tail end of the suspension parts through a revolute pair, so that the stirring shaft has swinging freedom in a plane taking the axis of the revolute pair as a normal line, furthermore, the stirring shaft is driven to rotate through a driving device, the stirring can be carried out in a larger depth interval, and the rotating angle range of the stirring shaft can be driven to be adaptive to the material adding amount according to different material adding amounts without generating excessive energy consumption.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of a hazardous waste material stirring machine (in the figure, the stirring shaft swings to a horizontal position).

Fig. 2 is a schematic view of an embodiment in which the cylinder is provided with bellows.

Fig. 3 is a main view of the stirring machine for dangerous waste materials (in the figure, the stirring shaft swings to the vertical position).

In the figure: 1. the stirring shaft comprises a servo motor, 2 parts of a stirring shaft, 3 parts of a piston rod, 4 parts of a hydraulic cylinder, 5 parts of blades, 6 parts of a permanent magnet, 7 parts of a rotor, 8 parts of a stator coil, 9 parts of a stator, 10 parts of a flange, 11 parts of a corrugated pipe, 12 parts of a jackscrew and 13 parts of a fixing sleeve.

Detailed Description

Referring to the attached drawing 1 of the specification, a conventional stirring shaft 2 is equivalent to a hydraulic cylinder 4 in fig. 1, and is directly suspended into a stirring barrel from a frame, a motor or other driving components for driving the stirring shaft 2 to rotate are mounted on the frame, and the mounting position is located outside the stirring barrel, so that the diversity of stirring forms is greatly limited, and different stirring blade configurations are adopted for improving the stirring capacity.

In the embodiment of the present invention, assemblies are provided on the configuration of the stirring blades in the structure shown in fig. 1, the assemblies comprise hydraulic cylinders 4 and stirring shafts 2, the stirring shafts 2 are connected with the piston rods 3 of the hydraulic cylinders 4 by hinges to form rotating pairs, then the servo motors 1 are used for driving the stirring shafts to rotate around the axes of the hinges, the rotation angle range or the swing range of the stirring shafts 2 is approximately 180 degrees limited by the blades 5.

In the structure described in the above paragraph, the hydraulic cylinder 4 is a support portion of the stirring apparatus as a suspension member. Accordingly, in the mechanical field, the base portion for mounting other components is generally referred to as a body, which may also be referred to as a frame as a whole, and in an embodiment of the invention, a separate frame (not shown in the figures) is provided. It will be appreciated that the frame is not only the bottom part of the product, but is essentially a three-dimensional body, with no particular limitation on height, and is adapted to the mounting position of the relevant component.

For the mounting of the hydraulic cylinder 4 shown in fig. 1, the seat portion thereof is the upper end of the cylinder body thereof, and may be fixedly mounted on the frame by means of, for example, bolts.

The frame comprises, for example, a frame part of dragon , two legs of a frame of dragon can be arranged on two opposite sides of the stirring barrel, a beam of the frame of dragon is used for mounting the hydraulic cylinder 4, and the position for mounting the hydraulic cylinder 4 is positioned above the stirring barrel.

For the stirring barrel, in the embodiment of the present invention, the barrel mouth is preferably oval, rectangular or kidney-shaped, wherein a middle section corresponding to the major axis of the oval barrel mouth, a middle section parallel to the long side of the rectangle, and the like are taken as vertical planes on which the stirring shaft 2 swings.

For the kidney shape, in the mechanical field, the kidney shape refers to a pattern formed by rectangles and two semicircles, the two semicircles are butted on two opposite edges of the rectangle, and the length of the edge is the diameter of the semicircle.

For a mixing drum (not shown), it needs to have a relatively stable mounting base, and usually needs to be fixedly mounted on a frame, and it needs to have sufficient supporting reliability, and the supporting dispersion degree of the frame is relatively limited compared with that of a pure barrel body.

The mixing drum is arranged vertically, the opening of the mixing drum is upward, and a similar suspension component of the hydraulic cylinder 4 provides vertical support to determine the depth of the mixing device extending into the mixing drum.

In the embodiment of the invention, the overhanging part is similar to the traditional stirring shaft 2 and is used for determining the depth of the stirring device, but the stirring shaft 2 does not rotate, and is arranged at the lower end of a piston rod 3 of a hydraulic cylinder 4 shown in the figure through a rotating pair as shown in figure 1.

The piston rod 3 is connected with the stirring shaft 2 through a cylindrical hinge, in embodiments, a hinge shaft of the cylindrical hinge is connected with a motor shaft of the servo motor 1 shown in fig. 1 through a coupler, the stirring shaft 2 is fixedly connected with the hinge shaft, and in embodiments, the stirring shaft 2 is connected with the hinge shaft through a welding structure.

In comparison, the servo motor 1 has higher driving precision, in embodiments, the driving device drives the stirring shaft 2 to swing by adopting positive and negative rotation control during the rotation of the stirring device, and in embodiments, the driving device moves intermittently.

In , a gear can be mounted on the hinge shaft, and the gear rack can drive the hinge shaft to rotate, so as to drive the stirring shaft 2 to swing.

Wherein the rack realizing the swing is vertically arranged.

As regards the drive means, it is also possible to use, for example, an oscillating cylinder with a determined working stroke, in order to set the maximum stroke of oscillation of the stirring axle 2.

For the stirring shaft 2, the horizontal state is shown in fig. 1, and the vertical state is shown in fig. 3, and assuming that the vertical state of the two states is the maximum depth state of the stirring device, and the horizontal state is the shallowest stirring state, the maximum rotation angle range of the stirring shaft 2 can be adjusted according to different batches of materials, so as to adapt to the stirring of different amounts of materials.

In fig. 1, the right end of the stirring shaft 2 is constructed as a stator 9, a stator coil 8 is arranged on the stator 9 to form a stator winding, and the structure is shown in fig. 1, wherein a rotor 7 is sleeved outside the stator 9, the rotor 7 is integrally rotating covers, the rotating covers are arranged on the stator 9 through bearings, and a liquid sealing structure is formed between the end part and the stirring shaft 2.

It should be noted that when the hazardous waste material is a solid, the permeability of the hazardous waste material is relatively poor, if the hazardous waste material is a solid-liquid mixture or a liquid, the content of organisms in the liquid in the hazardous waste is generally high, the surface tension is high, and the permeability is also relatively poor, so that the sealing difficulty of the liquid is lower than that of pure water, and therefore, the dynamic sealing required by the matching of the rotating cover and the stator 9 can be completely realized under the existing technical conditions.

The structure formed by the stator 9 cooperating with the rotor 7 in the configuration shown in fig. 1 is configured as an electric motor, thus requiring the introduction of power cables which, to avoid winding on the rotor 7, require the connection of a downhanging part-the stirring shaft to said stator 9.

The motor formed in the way described above is most common in shaftless propulsion devices, which are most often used on ships, such as submarines, and which are adapted to a very high hydraulic sealing capacity, such as a submarine design depth of 600 meters, corresponding to approximately 60 atmospheres, while for stirring the hydraulic sealing capacity is very low and is not difficult to achieve.

In addition, for the shaftless propeller on the ship, the blades 5 are arranged on the rotor 7, in the embodiment of the invention, the blades 5 are directly arranged on the rotor 7, and the connection between the rotor 7 and the blades 5 can adopt a welding structure or a screw connection.

For the assembling structure of the rotor 7 and the stator 9 shown in fig. 1, reference can be made to the structure of an electric push shaftless propeller, such as a detachable shaftless propeller disclosed in chinese patent document CN 109319076A.

Correspondingly, magnets or magnetic steel, such as the permanent magnet 6 shown in fig. 1, are arranged in the rotor 7, and the permanent magnets are bar magnets and are uniformly distributed in the circumferential direction of the rotor 7.

Under the condition that the stirring shaft 2 can rotate and can have better adaptability to the material quantity, the suspension part can be a fixed part, such as an independent vertical fixed rod, and under the condition, the suspension part still has better adaptability to the material quantity based on the swinging range of the stirring shaft 2.

In a preferred embodiment, the suspension part is a linear motion pair, in other words, the mounting position of the stirring shaft 2 is in a state of being capable of being lifted in the vertical direction, and thus the stirring barrel can have a larger barrel depth.

In the structure shown in fig. 1, when the hydraulic cylinder 4 is used as the hanging part and adapted as the hydraulic cylinder 4, the cylinder body seat part of the hydraulic cylinder 4 is mounted on the frame upward, and the push rod of the hydraulic cylinder, i.e., the piston rod 3 shown in fig. 1, leaves a tip at its lower end, as shown in fig. 2, which is a part for connecting with the stirring shaft 2. In fig. 2, a bellows 11 is fitted between the head and the lower end of the cylinder body of the hydraulic cylinder 4 for protecting the piston rod 3.

Correspondingly, the upper end of the corrugated pipe 11 is in liquid-tight fit with the cylinder body, and the lower end of the corrugated pipe is in liquid-tight fit with the end head. With this structure, the dynamic seal is changed to a static seal, that is, the dynamic seal between the piston rod 3 and the end cover of the hydraulic cylinder 4 is changed to a static seal by the flexibility of the bellows 11. The bellows 11 in such applications resembles an organ cover in the field of machine tools. Specifically, the end of the bellows 11 is connected with the protected end in a static seal manner, and when the piston rod 3 is extended, the bellows 11 is extended, and when the piston rod 3 is retracted, the bellows 11 is retracted, so that the dynamic seal can be changed into a static seal.

Further, it is understood that the bellows 11 is not susceptible to fatigue failure because the depth of agitation need not be changed frequently.

In the preferred embodiment, because the bellows 11 forms a static seal with the corresponding end, which is equivalent to changing the seal to a static seal, the selectivity of the sealing manner is stronger, and the sealing level is easier to guarantee. In fig. 2, the right end cover of the hydraulic cylinder 4 and the bellows 11 may be flange-connected, and sealed by a gasket.

At the right end of fig. 2, the right end of the corrugated pipe 11 is sleeve structures, the side surface of the sleeve is provided with a set screw hole, or is provided with a necking structure, and the holding hoop can be matched with the sealing ring for fastening.

When adopting the set screw hole, open the set screw hole at the right-hand member counterpoint of piston rod, set up the rubber inside lining in the sleeve pipe, use the set screw to fasten.

A set screw, colloquially referred to as a jackscrew 12, as shown in fig. 2, may be used to achieve axial locking by means of a radial connection.

In the embodiments, the suspension part adopts a rack and pinion mechanism, wherein a rack in the rack and pinion mechanism is used as a component suspended into the stirring barrel, and a rack and pinion pair is formed on the frame, namely used as an output gear of the driving mechanism arranged on the frame.

In the preferred embodiment, the rack in the rack and pinion mechanism used as the suspension member is a three segment structure, the middle segment is the rack for engaging with the output gear, the other two segments are the polished rods, wherein the polished rod on the upper portion forms a guide sleeve for guiding the guide sleeve arranged on the machine frame, and the other polished rod is the portion for the suspension member to penetrate into the stirred material, so that the rack does not directly penetrate into the hazardous waste material to protect the rack and pinion pair.

In , a nut screw mechanism is used as the suspension component, a screw in the nut screw mechanism is also of a multi-segment structure, and a thread segment is located in the middle part and does not penetrate into the material as much as possible.

In the structure shown in fig. 1, the rotating cover is a -end sealed barrel-type cover, the barrel-type cover is sleeved on the stator 9 from the open end thereof, the open end is sealed by an end cover, the end cover is fixedly connected with the barrel-type cover to form a static seal, and the end cover forms a dynamic seal with the stirring shaft 2.

In a preferred embodiment, the liquid-tight fit between the end cap and the stirring shaft is:

stage seal, spiral seal;

second-stage sealing, and framework shaft sealing;

third stage sealing, spiral sealing.

The screw seal is a common seal structure of types, the screw seal does not form a screw pair, the structure is similar to a screw conveyor, more specifically, the screw conveyor is equivalent to a reverse screw conveyor, which comprises a screw rod and a sleeve body, for screw conveying, materials are conveyed from the end to the end, for screw seal, the opposite is performed, the screw thread is reversed, namely the materials are pushed against the incoming material direction, or even if the materials flow into the screw seal structure under pressure, the fluids are not deeply conveyed due to the reverse conveying of the screw.

It will be appreciated that in the configuration shown in fig. 1, the direction of screw conveyance should be from right to left, whereby the configuration can prevent the fluid in the agitating barrel from flowing in from left to right.

the step of cooperating with the framework shaft seal sealing structure can avoid the direct inflow of fluid based on pressure, and the joint spiral seal can obtain better sealing effect.

In the configuration shown in fig. 1, the rotor has a conical head at the right end, which belongs to a fairing for the propeller, reducing the flow resistance by improving the aerodynamic or hydrodynamic profile. In the embodiment of the present invention, the blades 5 are preferably helical blades, which is distinguished from most stirring blades, which generally stir the fluid circumferentially. In the embodiment of the present invention, helical blades are preferred to generate helical thrust, and in this case, the rotor 7 has a conical head with a flow-straightening effect to reduce the negative influence on the fluid to be thrust.

Claims

1, kinds of danger waste material mixer, its characterized in that includes:

a frame;

a blade mounted on the rotating cowl.

2. The hazardous waste material blender of claim 1, wherein the depending member is a linear motion pair.

3. The hazardous waste material blender of claim 2, wherein the linear motion pair is a hydraulic cylinder, a screw-lead screw pair or a rack and pinion pair.

4. The hazardous waste material blender of claim 3, wherein the cylinder body seat of the hydraulic cylinder is mounted on the frame at the top, the lower end of the push rod of the hydraulic cylinder leaves a head, and a corrugated pipe is arranged between the head and the lower end of the cylinder body;

5. The hazardous waste material blender of claim 4, wherein the connection between the upper end of the bellows and the cylinder is a flange connection;

6. The hazardous waste material mixer of claim 3, wherein the rack forming the rack-and-pinion gear is a three-segment structure, the middle segment is a rack, and the other two segments are polished rods, wherein the polished rod on the upper portion forms a guide rod to guide the guide sleeve arranged on the frame;

7. The hazardous waste material blender of claim 1, wherein the drive means is a servo motor.

8. The hazardous waste material mixer of claim 1, wherein the rotating housing is an end-sealed barrel casing that fits over the stator from its open end, and the open end is sealed by an end cap;

the end cover is in liquid sealing fit with the stirring shaft.

9. The hazardous waste material blender of claim 8, wherein the liquid tight fit between the end cap and the blending shaft is:

stage seal, spiral seal;

second-stage sealing, and framework shaft sealing;

third stage sealing, spiral sealing.

10. The hazardous waste material blender of claim 8, wherein the sealing end of the barrel housing is a conical head.