CN201543470U

CN201543470U - Discharge cone with flow-adjustable feedback hole for ball mill

Info

Publication number: CN201543470U
Application number: CN2009200944864U
Authority: CN
Inventors: 孙德成
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-10
Filing date: 2009-10-10
Publication date: 2010-08-11
Anticipated expiration: 2019-10-10

Abstract

A discharge cone with a flow-adjustable feedback hole for a ball mill belongs to construction material mechanical technique field. The ball mill in prior art has fixed material-ball ratio, the discharging capacity of the ball mill is greater than the production capacity for open flow; as a result and firstly, the internal ball-material ratio of the ball mill is too small, part of the grinding body occurs empty grinding situation inside the ball mill and the ball loss is increased; secondly, the material surface difference is greater, the flow velocity of the material is higher so that the crushing and grinding are insufficient and the rough running situation occurs accordingly. The current solution includes that part of grate holes are blocked by steel bars to reduce the through-hole rate, or the grate is replaced by a cabin partition grate plate with lower through-hole rate, and the implementation of the cabin partition grate plate is more troublesome. In the utility model, a feedback hole is machined on the conical surface between two adjacent guiding fins of the discharge cone in prior art, the discharge cone with the feedback hole is used as the outer cone, an inner cone is additionally arranged in the discharge cone and is in clearance fit with the outer cone, the inner core is a hollow truncated cone, the height and conical degree of the truncated cone and the discharge core are the same, inner cone feedback holes with the same amount and position are machined on the conical surface of the inner cone. The utility model is applicable to construction material ball mills.

Description

Ball mill is bored with the discharging with the adjustable back material hole of flow

Technical field

The utility model relates to a kind of ball mill with the discharging awl with the adjustable back material hole of flow, improves existing dry method ball mill discharging awl, is used for the raw material pulverizing and the grinding step of construction material production process, belongs to the construction material field of mechanical technique.

Background technology

Have the ball mill part of using in the building material industry field relevant now and form, see shown in Figure 1 by cylindrical shell 1, impacting house 2, mistake feed bin, grinding storehouse 3 with the utility model.In cylindrical shell 1, the punishment in advance position in storehouse is between impacting house 2 and grinding storehouse 3.Cylindrical shell 1 is cylindric.Crossing feed bin is made up of compartment grate plate 4, compartment blind plate 5, discharging awl 6.Compartment grate plate 4, compartment blind plate 5 all are circular, and annulus endoporus aperture is identical, and the annulus excircle contacts with cylindrical shell 1 inwall and be fixing.Discharging awl 6 is hollow round table-like, and the circumference of the bottom surface 7 of round platform embeds in the compartment grate plate 4 annulus endoporus and fixes.Formation punishment in advance mouth 9 between the circumference of the table top 8 of discharging awl 6 and compartment blind plate 5 annulus endoporus.Densely covered comb hole 10 on compartment grate plate 4.Bore some triangle guide fins 11 that are equally spaced vertically on 6 male cone (strobilus masculinus)s in discharging, see shown in Fig. 1～4, these guide fins 11 are divided into several portions with punishment in advance mouth 9.Some lifting blades 12 are installed between compartment grate plate 4, compartment blind plate 5, and lifting blade 12 is seen shown in Figure 2 being the shape that curls gradually from compartment grate plate 4 or compartment blind plate 5 annulus endoporus to annulus excircle direction.The course of work of described ball mill is, the whole rotation of ball mill, material enters impacting house 2, entered feed bin from cylindrical shell 1 bottom through comb hole 10 after crushed, by lifting blade 12 elevators to cylindrical shell 1 first half, afterwards being slipped under the gravity effect on the discharging awl 6, under the dredging of guide fin 11, fall into grinding storehouse 3 from punishment in advance mouth 9 along the conical surface of discharging awl 6.

Because the production procedure difference of each construction material manufacturer, ball mill manufacturer can only be by the corresponding construction of the discharge ability design ball mill of making closed circuit flow process, and the material ball ratio of ball mill is fixed.For the open circuit flow process, the discharge ability of ball mill causes the interior material ball ratio of ball mill too small much larger than production capacity first, causes the empty mill of part abrasive body in the ball mill, has increased the ball consumption; Second cause the charge level difference excessive, material flow is fast, thereby pulverizes, grinds insufficient, thick phenomenon occurs running.And one of existing solution is to reduce the through-hole rate of compartment grate plate 4, and measure is with reinforcing bar blocking portion comb hole 10, perhaps changes the lower compartment grate plate 4 of through-hole rate.And that this scheme implementation gets up is cumbersome.

The utility model content

In order to control the discharge ability, material ball ratio and the charge level of adjusting ball mill easily are poor, thereby solve the sky mill of mechanical milling process appearance and run thick problem, at this scheme that is entitled as ball mill with the discharging awl with the adjustable back material hole of flow is proposed, this scheme has realized the adjustable of ball mill discharge ability, overcomes the problem that prior art exists.

The utility model is characterized in that, bore on 6 two conical surfaces between the adjacent guide fin 11 in existing discharging and to offer back material hole 13, the discharging awl 6 that will have back material hole 13 is as outer cone 14, see Fig. 5, shown in Figure 6, set up inner cone 15 in existing discharging awl 6, the two is a matched in clearance, see shown in Figure 7, it is hollow round table-like that inner cone 15 is, and it is 6 identical that the height h of round platform, tapering and discharging are bored, and offers quantity, position and all bore 6 identical inner cone back material holes 16 with discharging on inner cone 15 conical surfaces.

Its effect of the utility model is, in the course of work of ball mill, material part by lifting blade 12 hoisting cranes normally falls into grinding storehouse 3, a part is then returned impacting house 2 by back material hole 13 and inner cone back material hole 16, adjust the relative position of inner cone back material hole 16 and back material hole 13 by rotation inner cone 15, thereby adjust the ball mill mass flow, make it to adapt to different material varieties, granularity, moisture, make in impacting house 2, have suitable material ball ratio and charge level poor, avoid empty mill and run thick.

Description of drawings

Fig. 1 has ball mill part its structural representation relevant with the utility model that uses in the building material industry field now.Fig. 2 is the structural relation schematic diagram that existing ball mill is crossed compartment grate plate in the feed bin, discharging awl, lifting blade three parts, should figure be partial left side view with respect to Fig. 1.Fig. 3 is existing discharging awl right view.Fig. 4 is existing discharging awl front view.Fig. 5 is the discharging awl outer cone right view of the utility model.Fig. 6 is the discharging awl outer cone front view of the utility model.Fig. 7 is the discharging awl inner cone right view of the utility model.Fig. 8 is the discharging awl inner cone front view of the utility model.Fig. 9 is awl outside the utility model, inner cone assembling schematic diagram, and this figure double as is a Figure of abstract.

The specific embodiment

Its specific embodiment of the utility model is, bore on 6 two conical surfaces between the adjacent guide fin 11 in existing discharging and to offer back material hole 13, the discharging awl 6 that will have back material hole 13 is as outer cone 14, see Fig. 5, shown in Figure 6, back material hole 13 is fan-shaped, quantity is smaller or equal to the quantity of guide fin 11, and the conical surface area between the adjacent back material hole 13 is more than or equal to the area of a back material hole 13.In existing discharging awl 6, set up inner cone 15, the two matched in clearance, see shown in Figure 7, it is hollow round table-like that inner cone 15 is, it is 6 identical that the height h of round platform, tapering and discharging are bored, offer quantity, position and all bore 6 identical inner cone back material holes 16 with discharging on inner cone 15 conical surfaces, inner cone back material hole 16 shapes, size, quantity are identical with back material hole 13.

Claims

1. a ball mill is bored with the discharging with the adjustable back material hole of flow, discharging awl (6) is hollow round table-like, some triangle guide fins (11) vertically are equally spaced on discharging awl (6) male cone (strobilus masculinus), it is characterized in that, on the conical surface between discharging (6) two adjacent guide fins of awl (11), offer back material hole (13), the discharging awl (6) that will have back material hole (13) is as outer cone (14), in discharging awl (6), set up inner cone (15), the two matched in clearance, inner cone (15) is hollow round table-like, the height of round platform (h), tapering is identical with discharging awl (6), offers quantity on inner cone (15) conical surface, (6) identical inner cone back material hole (16) is all bored with discharging in the position.

2. ball mill according to claim 1 is bored with the discharging with the adjustable back material hole of flow, it is characterized in that, back material hole (13) is fan-shaped, and quantity is smaller or equal to the quantity of guide fin (11), and the conical surface area between the adjacent back material hole (13) is more than or equal to the area of a back material hole (13).

3. ball mill according to claim 1 is characterized in that with the discharging awl with the adjustable back material hole of flow, and inner cone back material hole (16) shape, size, quantity are identical with back material hole (13).