CN201729699U

CN201729699U - Thickening and dewatering device and vertical sand tank adopting same

Info

Publication number: CN201729699U
Application number: CN201020257326XU
Authority: CN
Inventors: 苗润田
Original assignee: Changsha Design Institute of Nonferrous Metallurgy
Current assignee: CINF Engineering Corp Ltd
Priority date: 2010-07-14
Filing date: 2010-07-14
Publication date: 2011-02-02
Anticipated expiration: 2020-07-14

Abstract

The utility model discloses a thickening and dewatering device and a vertical sand tank adopting the same, which belong to the field of mining machinery. The thickening and dewatering device comprises a collecting barrel, a feeder screen, a conical slurry-collecting plate and a retarding ring, the feeder screen is positioned in the collecting barrel, the periphery of the feeder screen is provided with meshes, the slurry-collecting plate is firmly connected on the outer wall of the collecting barrel in a surrounding manner, the lower end of the retarding ring is connected with the outer wall of the lower part of the collecting barrel, the upper end of the retarding ring is connected with the outer circumference of the slurry-collecting plate, and the lower end of the feeder screen is provided with a baffle for preventing mortar from falling. The vertical sand tank adopts the thickening and dewatering device. The utility model can ensure that mortar and flocculant can be sufficiently mixed, consequently, the utilization rate of flocculant is high, mortar can be stably fed, the flowing travel of mortar is lengthened, thickening and dewatering effects are more obvious, moreover, the overflow concentration is effectively decreased, the loss of mortar is reduced, and the subsequent overflowed water purification treatment cost is reduced.

Description

A kind of dense dewatering unit and use the vertical sand warehouse of this device

Technical field

The utility model relates to the mining machinery field, especially for a kind of dense dewatering unit at the vertical sand warehouse top at filling in mine station.

Background technology

In the filling in mine station produced, vertical sand warehouse generally adopted central straight to tap into the material mode, and the sand-feeding tube road directly enters inside, sand storehouse; The general employing of flocculation agent together added with sand-feeding tube.

Because the settling area of vertical sand warehouse sedimentation own is little, settling height is shorter, causes overflow water to be difficult to clarification; Simultaneously central straight taps into the material mode and also can cause mortar directly to wash away causing the settled sand face that has formed to return muddy, has more aggravated this drawback.And adopt the conventional sand mode of advancing, and flocculation agent is difficult to reach sufficient the mixing with mortar, and the utilization ratio of flocculation agent is not high, and effect is not strong, makes the effluent concentration instability, even takes away the higher concentration slip.

Summary of the invention

For the utilization ratio that overcomes existing vertical sand warehouse flocculation agent not high, effect is not strong, make the effluent concentration instability, even take away the defective of higher concentration slip, the utility model aims to provide a kind of dense dewatering unit, this device is applied in the vertical sand warehouse, can improve the utilization ratio of flocculation agent significantly.

To achieve these goals, the technical scheme that the utility model adopted is: described dense dewatering unit, its constructional feature is, comprise aggregate tube, be positioned at aggregate tube and circumferentially have the feeder screen of sieve aperture, around and be fixedly connected on the sludge collecting board of the taper on the aggregate tube outer wall, the lower end is connected with aggregate tube bottom outer wall and upper end and the baulk ring that is connected in sludge collecting board outer week; Described feeder screen bottom is provided with the blocking material plate that stops mortar to fall.

Further, the bus inclination angle of the sludge collecting board of described taper is 45 ° ~ 75 °, more preferably 60 °.And the baulk ring of described back taper is many knuckles back taper that horizontal section and tilting section are alternately arranged, described baulk ring tilting section and aggregate tube axial line angle are 45 ° ~ 75 °, more preferably 60 °.

Described baulk ring docks with sludge collecting board and circumferentially forms dish shape chamber at aggregate tube.

Further purpose of the present utility model provides a kind of vertical sand warehouse, comprises the sand warehouse, and sand-feeding tube also comprises aforesaid dense dewatering unit; In this dense dewatering unit, described feeder screen is contained in sand-feeding tube outlet below, and described aggregate tube links to each other with sand warehouse top, and described baulk ring places the settled layer in sand storehouse.

Described sludge collecting board upper end is arranged in the clear layer in sand storehouse, and the sludge collecting board lower end is arranged in the settled layer in sand storehouse.

By said structure, from advance effusive mortar of sand storehouse sandpipe and flocculation agent can be feeder screen thorough mixing, bring into play the effect of flocculation agent better, and prolonged the mobile stroke of mortar significantly, thereby improved the dense dehydrating effect in sand storehouse.

Compared with prior art, the beneficial effects of the utility model are: described dense dewatering unit is applied in the vertical sand warehouse, mortar is mixed with flocculation agent fully, flocculation agent utilization ratio height, the mortar charging is stable, and the mobile stroke of mortar is extended, dense dehydrating effect is more obvious, and reduced effluent concentration effectively, reduced the loss of mortar, reduced follow-up purifying treatment cost overflow water.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is used for the diagrammatic cross-section of vertical sand warehouse for the described dense dewatering unit of the utility model embodiment;

Fig. 2 is the vertical view of Fig. 1.

In the drawings

The 1-baulk ring; The 2-sludge collecting board; The 3-aggregate tube;

The 4-feeder screen; 5-sand warehouse; The 6-sand-feeding tube.

α is the angle between baulk ring 1 tilting section and aggregate tube 3 axial lines.

Embodiment

A kind of vertical sand warehouse as shown in Figure 1 comprises sand warehouse 5, sand-feeding tube 6 and dense dewatering unit; Described dense dewatering unit comprises the aggregate tube 3 of lower ending opening, be positioned at aggregate tube 3 and circumferentially have the feeder screen 4 of sieve aperture, around and be fixedly connected on the sludge collecting board 2 of the taper on aggregate tube 3 outer walls, the lower end is connected with aggregate tube 3 bottom outer walls and upper end and the baulk ring 1 that is connected in sludge collecting board 2 outers week; Described feeder screen 4 bottoms are provided with the blocking material plate that stops mortar to fall.The bus inclination angle of the sludge collecting board 2 of described taper is preferably 60 °.The baulk ring 1 of described back taper is many knuckles back taper that horizontal section and tilting section are alternately arranged, described baulk ring 1 tilting section and aggregate tube 3 axial line angles are preferably 60 °.

In this dense dewatering unit, described feeder screen 4 is contained in sand-feeding tube 6 outlet belows, and described aggregate tube 3 links to each other with sand warehouse 5 tops, and described baulk ring 1 places the settled layer in sand storehouse.

Described sludge collecting board 2 upper ends are arranged in the clear layer in sand storehouse, and the lower end is arranged in the settled layer in sand storehouse.

Mortar and flocculation agent collaborate before entering vertical sand warehouse, enter in the feeder screen 4 through sand-feeding tube 6 then, be subjected to the stopping of blocking material plate of feeder screen 4 bottoms, greatly reduce surging force, overflow from the sieve aperture of feeder screen 4 peripheries, also make mortar and flocculation agent in feeder screen 4, obtain further thorough mixing simultaneously.Mortar that overflows from feeder screen 4 sieve apertures and flocculant mixture sink along aggregate tube 3 inwalls, this in period the mortar particle rely on the adsorption of flocculation agent and aggregate tube 3 inwalls to begin flocculating settling, enter into baulk ring 1 below then, by baulk ring 1 distinctive many beveled structures own, fully prolong the mobile stroke of mortar, the retardance mortar is held under the arm and is wrapped up in tailings and enter clear layer, in this further dense dehydration; Small part enters the sand fine particle of clear layer attached to sludge collecting board 2 surfaces, can all not taken away by water, totally gets final product by periodic flushing at last.

Claims

1. dense dewatering unit, it is characterized in that, comprise aggregate tube (3), be positioned at aggregate tube (3) and circumferentially have the feeder screen (4) of sieve aperture, around and be fixedly connected on the sludge collecting board (2) of the taper on aggregate tube (3) outer wall, the lower end is connected with aggregate tube (3) bottom outer wall and upper end and the baulk ring (1) that is connected in sludge collecting board (2) outer week; Described feeder screen (4) bottom is provided with the blocking material plate that stops mortar to fall.

2. dense dewatering unit according to claim 1 is characterized in that, the bus inclination angle of the sludge collecting board of described taper (2) is 45 ° ~ 75 °.

3. dense dewatering unit according to claim 1, it is characterized in that, the baulk ring of described back taper (1) is many knuckles back taper that horizontal section and tilting section are alternately arranged, described baulk ring (1) tilting section and aggregate tube (3) axial line angle α are 45 ° ~ 75 °.

4. a vertical sand warehouse comprises sand warehouse (5), and sand-feeding tube (6) is characterized in that, also comprises the described dense dewatering unit of one of claim 1 ~ 3; In this dense dewatering unit, described feeder screen (4) is contained in sand-feeding tube (6) outlet below, and described aggregate tube (3) links to each other with sand warehouse (5) top, and described baulk ring (1) places the settled layer in sand storehouse.

5. vertical sand warehouse according to claim 4 is characterized in that, described sludge collecting board (2) upper end is arranged in the clear layer in sand storehouse, and sludge collecting board (2) lower end is arranged in the settled layer in sand storehouse.