CN2207225Y

CN2207225Y - Explosion-proof dustless universal pulverizer

Info

Publication number: CN2207225Y
Application number: CN 94237907
Authority: CN
Inventors: 林协中; 林凯; 林静
Original assignee: 林协中
Priority date: 1994-08-01
Filing date: 1994-08-01
Publication date: 1995-09-13
Anticipated expiration: 2004-08-01

Abstract

The utility model discloses an explosion-proof dustless universal pulverizer, belonging to the technical field of pulverization. The pulverizer comprises a feed inlet, a pulverizing device, a separator, a loading head and a discharge hole. The feed gate valve below the feed inlet and the discharge gate valve above the discharge hole are double gate valves. The separator is connected with the pulverizing device through a supporting pipe, and a material lifting device is arranged in the supporting pipe. The return hopper of the separator is connected with the feed end of the pulverizing device. The air inlet pipe of the blower is connected with the outlet of the separator. The air discharge pipe of a blower is connected with the loading head which adopts a rotary dust collector. The gas return pipe of the loading head is connected with the feed end of the pulverizing mechanism. The utility model has the advantages of small fineness of pulverized materials, explosion-proof performance, no dust and high pulverizing efficiency.

Description

Explosion-proof dustless universal pulverizer

The utility model belongs to the disintegrating apparatus technical field, is a kind of explosion-proof dustless Universalpulverizer.

The size reduction machinery kind is a lot of at present, but two common weak points are arranged, and the one, forbid to pulverize inflammable explosive article, the 2nd, during these disintegrating apparatus work, dust is bigger, and contaminated environment can not be accomplished dustless operation.

The purpose of this utility model is that a kind of good seal performance will be provided, and no dust pollution can be pulverized the explosion-proof dustless Universalpulverizer of inflammable and explosive material.

The purpose of this utility model realizes with the following methods.This explosion-proof dustless Universalpulverizer comprises charging aperture, reducing mechanism, separator, loading head, discharging opening, charging gate valve under the charging aperture is a double gate valve, discharging gate valve on the discharging opening is a double gate valve, separator is connected with reducing mechanism by stay pipe, the material lifting device is arranged in the stay pipe, the back hopper of separator is connected with the feed end of reducing mechanism, there is the blast pipe of air blast to be connected with the outlet of separator, the discharge pipe of air blast is connected with loading head, loading head adopts the deduster that circles round, and loading head has the gas return path pipe to be connected with the feed end of reducing mechanism.Below in conjunction with the embodiment accompanying drawing the utility model is described in further detail.

Fig. 1 is the utility model structural representation.

Among the figure: 1-charging aperture, 2-reducing mechanism, 3-air-filled pore, the 4-liner plate, 5-hits flitch, and 6-hits the flitch support, 7-transfers the order blade, and 8-transfers order support, 9-fan blade, the 10-blade support, 11-bearing, 12-support, the 13-stay pipe, 14-separator, 15-back hopper, the 16-air blast, 17-air blast fan blade, 18-blade support, the 19-blast regulator, 20-blower motor, 21-discharging gate valve, the 22-discharging opening, 23-loading head, 24-gas return path pipe, 25-dedusting sponge, 26-probe chamber, 27-probe, 28-probe chamber dedusting sponge, the 29-shockproof sponge of popping one's head in, 30-air pump, the 31-flashboard, the 32-blast pipe, 33-discharge pipe, 34-probe tube.

The utility model is on the basis of existing various pulverizers, adding upper sealing device (as advances, the discharging gate valve all adopts double gate valve, be beneficial to sealing), selection by winnowing control smashing fineness, complete machine fills with inert gas, can pulverize various combustible and explosive articles, and the gas circulation pipeline arranged, save the inert gas use amount greatly, in the present embodiment, on loading head (23), the nitrogen gas concn measurement mechanism is arranged, this device comprises the probe tube (34) that is connected on the gas return path pipe (24), in the front portion of probe tube (34) dedusting sponge (25) is arranged, connect probe chamber (26) behind the probe tube, probe (27) and dedusting sponge (28) and shockproof sponge (29) are arranged in the probe chamber, have the air inlet pipe of little air pump (30) to be connected with probe chamber (26), escape pipe is connected with loading head (23).Reducing mechanism (2) can adopt Scroll-type pulverizer or ball mill or garden dish flour mill or raymond mill, and reducing mechanism adopts the Scroll-type pulverizer in the present embodiment.

During use, earlier charge into nitrogen (or inert gas) if pulverize combustible and explosive articles (as producing aluminium silver powder etc.) by air-filled pore (3), oxygen in the eliminating machine, when oxygen content is less than 8%, combustible and explosive articles can not burn and blast, nitrogen recycles in machine, make and keep 0 to press or pressure-fired in the entire equipment, material enters in the charging gate valve (31) through charging aperture (1) and the gate valve above the charging gate valve (31), closes top gate valve, opens following gate valve again, then material enters the feed end of reducing mechanism (2), two gate valves are not opened simultaneously, can prevent in the machine and the outer gas exchange of machine, guarantee that charging aperture place free from dust flies upward.Reducing mechanism (2) work, material is pulverized, the powder of pulverizing is in the bottom slips into the material lifting device in the stay pipe (13) (as bucket elevator), powder is thus lifted to separator (14), when falling from top to bottom, because air blast (16) work, in separator (14), produce negative pressure by blast pipe (22), the powder that reaches the requirement fineness in separator is inhaled into blast pipe (32) through air blast (16), discharge pipe (33) is to loading head (23), oarse-grained material is then fallen after rise to the feed end of reducing mechanism (2) by back hopper (15) under the gravity effect in separator (14) lining, enters again in the reducing mechanism to pulverize once more.Air blast (16) is delivered to loading head (23) with the powder of fineness up to specification from separator (14).The size of the control wind-force by regulating air quantity device (19), and can obtain the powder of required fineness.This process is a selection by winnowing.What loading head (23) adopted is cyclone dust collectors, and in loading head, material is separated from the gas, and the feed end that nitrogen (or inert gas) is got back to reducing mechanism (2) along gas return path pipe (24) recycles.Sink to loading head (23) bottom after the pulverized feed separation, through discharging gate valve (21), discharging opening (22) discharging packing.Nitrogen gas concn for gas in the controller; measure nitrogen content by the nitrogen gas concn measurement mechanism; because the effect of air pump (30); suck a small amount of gas by probe tube (34) from gas return path pipe (24), enter probe chamber (26) through dedusting sponge (15), probe (27) can also can show by instrument by the measurement gas composition; pass through automatic control circuit in addition; by controlling automatic warning, autostop and addition are regulated nitrogen gas concn automatically, reach explosion-proof effect.

The utility model is all-sealed; charging, discharging all are double gate valve; no dust from flying; smashing fineness control adopts selection by winnowing, discharging fineness to regulate (reaching as high as 600 orders) arbitrarily between the 40-325 order; can recycle nitrogen (or inert gas) protective gas, burn-proof and explosion prevention is effective; owing to recycle, the nitrogen consumption is few, can reduce use cost greatly.The utility model can be widely used in the powder process of the high thin powder process processing of the various materials of industries such as mine, building materials, chemical industry, metallurgy, pharmacy, food as lithopone, titanium dioxide, gangue, shell, granite, aluminium silver powder, magnesium aluminium powder etc., the efficient height, be existing various disintegrating apparatus 2-3 doubly.

Claims

1, a kind of explosion-proof dustless Universalpulverizer, comprise charging aperture (10), reducing mechanism (2), separator (14), loading head (23), discharging opening (22), it is characterized in that the charging gate valve (31) under the charging aperture (1) is a double gate valve, discharging gate valve (21) on the discharging opening (22) is a double gate valve, separator (14) is connected with reducing mechanism (2) by stay pipe (13), stay pipe has the material lifting device in (13), the back hopper (15) of separator (14) is connected with the feed end of reducing mechanism (2), there is the blast pipe (32) of air blast (16) to be connected with the outlet of separator (14), the discharge pipe (33) of air blast (16) is connected with loading head (23), loading head (23) adopts the deduster that circles round, and loading head (23) has gas return path pipe (24) to be connected with the feed end of reducing mechanism (2).

2, explosion-proof dustless Universalpulverizer according to claim 1, it is characterized in that on the loading head (23) the nitrogen gas concn measurement mechanism being arranged, this device comprises the probe tube (34) that is connected on the gas return path pipe (24), after having dedusting sponge (25), probe tube, the front portion of probe tube (34) connects probe chamber (26), probe (27) and dedusting sponge (29) and shockproof sponge (29) are arranged in the probe chamber, have the air inlet pipe of little air pump (30) to be connected with probe chamber (26), escape pipe is connected with aggregate pipe (23).

3, explosion-proof dustless Universalpulverizer according to claim 1 and 2 is characterized in that reducing mechanism (2) adopts Scroll-type pulverizer or ball mill or garden dish flour mill or raymond mill.