CN202186917U - Special-shaped deep-cone concentrator - Google Patents

Abstract

The utility model discloses a heterosexual deep cone concentrator, which includes a flocculant tube, a bridge frame and a pool body. The pool body is composed of three sections of different taper surfaces, and the taper increases sequentially from top to bottom. The taper is controlled by CFD technology. Settlement numerical simulation is determined; there is a beam in the middle of the bridge frame, an annular barrel is fixed at the lower part of the bridge frame, and a distribution tube is connected to the lower part of the ring barrel. The distribution tube is a barrel-shaped busbar with a spline curve. Its shape is determined by the numerical simulation of the mixed flow field by CFD technology; there is a retaining ring on the inner wall of the annular barrel, and the upper cover of the distributing cylinder is placed on the retaining ring; It is connected to the feed pipe; a cylinder is arranged in the middle of the cloth tube, the top of which is fixed on the lower surface of the beam, and a trumpet-shaped deflector is installed at the bottom, and the round steel is passed between the deflector and the distribution tube. Cloth welding; the motor is installed on the beam, the output shaft of the motor is connected with the stirring shaft, the stirring shaft passes through the cylinder and extends to the lower part of the pool body. The geometric structure of the material distributing cylinder and the pool body of the utility model is adapted to the flocculation, settlement and concentration rules of waste water ore pulp, and is beneficial to sludge settlement and discharge. The utility model has the advantages of simple structure, good concentration effect, high efficiency, energy saving and consumption reduction.

Description

Shaped deep cone thickener

technical field

The utility model belongs to environmental protection machinery and relates to tailings water treatment equipment for ore dressing production, in particular to a special-shaped deep-cone concentrator with flocculant added.

Background technique

The tailings wastewater in mineral processing production is generally treated by a deep cone thickener. The tank body of this machine is a vertical cylinder and an inverted cone structure. It is generally equipped with a feeding pipe, a material distribution cylinder, an overflow tank, a stirring device, and a discharging device. The waste water enters the concentrator from the feed pipe, and under the action of the stirring device, it coagulates with the flocculant and destabilizes, and coagulates and granulates to descend and settle. The precipitated and concentrated pulp is discharged through the lower discharge device, and the overflow water after upper clarification can be recycled. use.

The feeding method of the ordinary deep cone thickener is that the waste water is fed directly from the center of the pool, and the function of the distributing cylinder is only to send the material to the specified depth, without the function of coagulation and destabilization; or a stirring device is installed in the cylinder or at its outlet To realize this function, but the structure is complicated and energy consumption is arranged. Most of the outlets of ordinary material distribution tubes are vertically downward without buffer devices. The high-speed feeding suspension is difficult to fully settle, resulting in high overflow concentration; Low. The tank body of the ordinary deep cone thickener is a whole cylinder plus an inverted cone structure, and the taper of the cone surface is fixed, which cannot meet the requirements of flocculation and settlement, concentration and aggregation of ore pulp, and sludge discharge. The mud scraper installed at the bottom of the cone of ordinary deep cone thickeners is generally a flat structure, which often turns up high-concentration suspensions, affecting the concentration of the bottom flow, and has high running resistance and power consumption. the

Utility model content

The purpose of the utility model is to make up for the deficiencies of the prior art, and to provide a special-shaped deep cone concentrator, which is used for concentrating and separating the slurry of tailings water in mineral processing production. the

The heterosexual deep cone thickener includes a flocculant tube, a bridge frame and a pool body. It is characterized in that: the pool body is tapered and is composed of a cone surface determined by CFD technology for flocculation and settlement numerical simulation. The cone surface includes three sections of different tapers and The taper increases sequentially from top to bottom; there is a beam in the middle of the bridge frame, and an annular barrel is fixed on the lower part of the bridge frame. The lower part of the annular barrel is connected with a distribution tube located in the pool through a flange. The numerical simulation of the flow field determines that the generatrix is a barrel-shaped spline curve, and its upper and lower cross-sectional dimensions are larger than the middle cross-sectional dimension; the inner wall of the annular barrel is provided with a retaining ring, and the upper cover of the distribution tube is placed on the retaining ring; The upper part of the cylinder is connected with the feed pipe along the tangential direction, and the flocculant pipe is connected to the feed pipe outside the tank; a cylindrical cylinder is arranged in the middle of the distribution cylinder, and its top passes through the center hole on the upper cover of the distribution cylinder and is fixed on the beam On the lower surface of the lower surface, a deflector is installed at the bottom, and the shape of the deflector is trumpet-shaped determined by the numerical simulation of the mixed flow field by CFD technology; the deflector and the distribution cylinder are evenly welded by round steel; A motor is installed on the beam, and the output shaft of the motor is connected to the stirring shaft through a coupling. The stirring shaft passes through the cylinder and extends to the lower part of the pool body. The bottom of the stirring shaft is fixed with a loosening mechanism, and the loosening mechanism includes: The central hub is set on the stirring shaft, and several comb rakes are evenly distributed on the central hub.

The heterosexual deep cone concentrator is characterized in that it includes a bearing seat located in the tank body, a bearing is installed in the bearing seat, the bearing is set on the lower part of the stirring shaft, and a support is fixedly connected between the bearing seat and the inner wall of the pool pole.

The heterosexual deep cone concentrator is characterized in that: the bottom of the pool body is provided with a mud discharge port.

The heterosexual deep cone concentrator is characterized in that: the upper cover of the cloth cylinder is distributed with air holes.

The heterosexual deep cone concentrator is characterized in that the pool body is supported and fixed by pillars.

The working process is that the flocculant is added to the feeding pipe outside the pool, and is initially mixed with the wastewater during the flow; and enters the upper section of the distribution cylinder along the tangent, rotates and descends along the inner wall of the distribution cylinder, and generates a vortex to further mix the flocculant with the wastewater ;In the middle section of the distribution tube, as the cross section decreases, the flow rate of the material increases, the flocculant and the wastewater are fully mixed, and the coagulation and destabilization stage is completed; The material is distributed along the horizontal, without impact and disturbance on the lower sediment. As the section of the lower cone section continues to increase and the flow velocity decreases, the conditions required for flocculation are formed and flocculation begins. Since the materials have been fully mixed in the distribution drum, no stirring device is needed here. During the rising process of the material, as the cross section of the tank body increases, the flow rate further decreases, and the particles are continuously precipitated to form flocs, which settle on the tank body and complete the coagulation and granulation stage; the water flow continues to rise, and finally forms clear water to flow out from the overflow tank. The taper of the upper section of the pool body is small and the settlement area is large; the taper of the cone surface of the middle section of the pool body is increased to achieve rapid settlement and facilitate the sliding of flocs; the taper of the lower section of the pool body is larger to facilitate the discharge of flocs at the bottom of the pool. The comb-shaped mud scraping rake can effectively reduce the floc hanging on the wall and avoid consolidation, the resistance and power consumption are small, and it is not easy to press the rake; the bottom mud is discharged from the mud discharge port.

The utility model has the advantages of:

The geometric structure of the material distributing cylinder and the pool body in the utility model is adapted to the flocculation, settlement and concentration rules of wastewater ore pulp, and is beneficial to sludge settlement and discharge; the utility model has the advantages of simple structure, good concentration effect, high efficiency, energy saving and consumption reduction.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is an enlarged view of the connection part between the distribution tube and the bridge frame.

Detailed ways

Referring to accompanying drawings 1 and 2, a special-shaped deep cone concentrator includes a distribution tube 1, a pool body, a loosening mechanism, a bridge frame 5, and a feeding pipe 18. An annular overflow groove 19 is arranged on the upper edge of the pool body, and the bridge frame 5 passing through the center of the pool body is provided. The bridge frame 5 is provided with handrails 6 for people to pass through. The flocculant pipe 17 is connected to the feed pipe 18 outside the pool, and the feed pipe 18 enters the upper section of the distribution cylinder 1 along a tangent. The distribution tube 1 is in the shape of a barrel whose generatrix is a spline curve, the upper and lower sections are large, and the middle is small, and its shape is determined by numerical simulation of the mixed flow field by CFD technology. Connected to the annular barrel 4, the annular barrel 4 and the bridge frame 5 are welded and fixed, the inner wall of the annular barrel 4 is welded with a retaining ring 3, and the distribution tube upper cover 20 is placed on it, and the distribution tube upper cover 20 is Cloth a number of φ10 air holes. A slender cylinder 23 is arranged in the middle of the distributing tube 1 , the upper part of which is connected to the flange 14 through bolts 15 , the flange 14 is welded to the crossbeam 16 , and the crossbeam 16 is welded to the bridge 5 and fixed. The bottom of the cylinder 23 is equipped with a trumpet-shaped deflector 26 whose shape is determined by numerical simulation of the mixed flow field by CFD technology. Described cloth tube 1 and deflector 26 are evenly distributed and welded with round steel 25, and are connected as a whole. The pool body is composed of three sections of conical surfaces 24, 29, and 35 with different tapers connected. The taper increases sequentially. The taper is determined by numerical simulation of flocculation and settlement by CFD technology. The bottom of the pool is provided with a mud discharge port 36. The loosening mechanism is arranged at the bottom of the middle pool body 29, and its stirring shaft 27 is connected with the motor 7 by the bolt 10 through the connecting flange 9, and is driven to rotate by the key 8. The weight of the agitating shaft 27 and the comb-shaped scraper assembled thereon acts on the bearing seat 12 through the thrust ball bearing 11, and the bearing seat 12 is connected to the flange 14 with screws 13. The lower part of the stirring shaft 27 is supported by a sliding bearing 30, and the sliding bearing 30 is installed on a bearing seat 32, and the bearing seat 32 is welded and fixed with three supporting rods 31 and the pool body 29 evenly. The comb-shaped scraper rake is installed on the lower end of the stirring shaft 27, and its central hub 33 and the stirring shaft 27 are driven by keys, and several comb-shaped rakes 34 are evenly distributed on the central hub 33. The inverted cone pool body 24, 29, 35 is supported and fixed by several pillars 28.

Claims (5)

1. Heterotropic deep cone thickener, including flocculant pipe, bridge frame and pool body, characterized in that: the pool body is made of conical surface determined by numerical simulation of flocculation and settlement by CFD technology, and the cone surface includes three different sections The taper increases sequentially from top to bottom; there is a beam in the middle of the bridge frame, and an annular barrel is fixed on the lower part of the bridge frame. The lower part of the annular barrel is connected with a distribution tube located in the pool through a flange. The numerical simulation of the mixed flow field determines that the busbar is a barrel-shaped spline curve, and its upper and lower section dimensions are larger than the middle section size; the inner wall of the annular barrel is provided with a retaining ring, and the upper cover of the distribution tube is placed on the retaining ring The upper part of the distributing cylinder is connected with the feeding pipe along the tangential direction, and the flocculant pipe is connected to the feeding pipe outside the pool; a cylindrical cylinder is arranged in the middle of the distributing cylinder, and the top of the distributing cylinder is fixed after passing through the center hole on the upper cover of the distributing cylinder On the lower surface of the beam, a deflector is installed at the bottom, and the shape of the deflector is a trumpet shape determined by the numerical simulation of the mixed flow field by CFD technology; Welding; a motor is installed on the beam, and the output shaft of the motor is connected to the stirring shaft through a coupling. The stirring shaft passes through the cylinder and extends to the lower part of the pool body. The bottom of the stirring shaft is fixed with a loosening mechanism. It includes a central hub set on the stirring shaft, and several comb-shaped rakes are evenly distributed on the central hub. 2. The heterosexual deep cone concentrator according to claim 1, characterized in that: it includes a bearing seat located in the pool body, a bearing is installed in the bearing seat, and the bearing is sleeved on the bottom of the stirring shaft, and the bearing seat and Support rods are fixedly connected between the inner walls of the pool. 3. The heterosexual deep cone concentrator according to claim 1, characterized in that: the bottom of the pool body is provided with a mud discharge port. 4. The heterosexual deep-cone concentrator according to claim 1, characterized in that air holes are distributed on the upper cover of the cloth tube. 5. The heterosexual deep cone concentrator according to claim 1, characterized in that: the pool body is supported and fixed by pillars.

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