CN201183018Y

CN201183018Y - Vertical type rotating numerical control air valve

Info

Publication number: CN201183018Y
Application number: CNU2008200632478U
Authority: CN
Inventors: 唐志
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-30
Filing date: 2008-04-30
Publication date: 2009-01-21
Anticipated expiration: 2018-04-30

Abstract

The utility model relates to a vertical type rotary numerical control blast gate, which belongs to jigger blast gates used for washing separation coal. A main shaft is vertically installed between the upper end cover and the lower end cover through a bearing, a valve sleeve is respectively connected with the upper end cover and the lower end cover, the valve core positioned at the inner side of the valve sleeve is installed on the main shaft, a rotating gap is arranged between the valve core and the valve sleeve, and strip-shaped air inlets are respectively and uniformly distributed on the circular side walls of the valve sleeve and the valve core, and an air outlet is arranged on the lower end cover; a motor driving mechanism is also provided. The vertical rotating numerical controlling wind valve has the advantages that the structure is greatly simplified, the opening range of the blast gate is greatly enhanced, the instantaneous air input volume is large, and the reliability is high.

Description

The vertical rotating numerical control wind valve

Technical field

The utility model relates to ore washing industrial equipment, especially for the vertical rotating air-valve of the jigging machine of washed coal.

Background technology

Jigging is a kind of gravity separation method, and to be material in the fluctuating flow that rises and descend realize sorting by material proportion is different for it, and the frequency of this fluctuating flow and amplitude are to directly act on current by compressed air by air-valve to form.Therefore, Air Valves in Jig is the key equipment of decision beneficiating efficiency and ore dressing quality.

The Air Valves in Jig of common use mainly contains two classes in coal mining industry, one class is a jig piston valve, one class is the cover plate air-valve, Chinese patent literature CN2156938Y (" the vertical jig piston valve of jigging machine ", Tangshan Subinst, Coal Science Research Central Inst application), CN2316032Y (" jigging machine curved surface jig piston valve "), CN2316031Y (" jigging machine tapering jig piston valve "), CN2323872Y (" jigging machine shake again vertical jig piston valve ") etc. are the multiple improvement projects of jig piston valve.From general structure, jig piston valve mainly is made up of valve body, spool, cylinder, piston.When spool during with the upper and lower motion of piston, spool staggers with opening on the valve pocket or overlaps, realize air intake and air draft, it drives and adopts the piston-cylinder pneumatic mode, mainly exists high-pressure blast blast consumption height and pneumatic switching mode to be difficult to satisfy the industrial requirements of the compound pulsation of jigging machine.In the another kind of cover plate air-valve, it is exactly its representative that the Ba Dake jigging machine that introduce the Germany has adopted vertical cover plate air-valve, its primary structure is, the air chamber of jigging machine communicates with air intake valve and exhaust valve, the air intake valve is contained in the low pressure bellows, and exhaust valve is contained in the air draft case, is controlled the opening time of air intake valve and exhaust valve by the switching electricity time of magnetic valve, make air intake valve and exhaust valve alternating movement, realize air intake and air draft.This air intake valve is the pneumatic cover plate that is connected under the piston rod with exhaust valve.When the pneumatic cover plate of air intake valve covered, low-pressure air acted on its back side, and moving upward of cylinder piston caused very big resistance, so high-pressure blast consumption and power consumption are bigger.After pneumatic cover plate was opened, the upper and lower pressure reduction pop-off of cover plate made cylinder piston high speed upper punch, causes easily and hits cylinder; The bump of switching repeatedly of the pneumatic cover plate and the mouth of pipe causes its service life lower.

More than two class air-valves have following shortcoming and defect: high voltage device such as magnetic valve, triplet etc. are easy to failure under the bigger operating mode of dust, air humidity, and causing controlling poor reliability influences the coal separation quality; Structure is complicated, and job stability is relatively poor; The valve area scope is less, can not finely satisfy jigging machine combination frequency and amplitude variations and require or the like.

The utility model content

The purpose of this utility model provides a kind of designs simplification, to high dust, better, the safe and reliable high vertical rotating numerical control wind valve of high humility working condition conformability.

The purpose of this utility model is realized by following technical scheme: a kind of vertical rotating numerical control wind valve, main shaft vertically is installed between upper end cover and the bottom end cover through bearing, valve pocket is connected with upper and lower end cap respectively, the spool that is positioned at the valve pocket inboard is installed on the main shaft, leave the uniform respectively bar shaped air inlet that has on the circular side wall of rotating intermittence and valve pocket and spool between spool and the valve pocket, have air outlet on the bottom end cover; Also has motor-driven mechanism.

The course of work of this device is as follows: under the instruction of computer numerical controlled device, control motor-driven mechanism in motor startup and stop, realize the deflection of spool different angles, make spool and valve pocket (maintaining static) mutual dislocation, because the mutual generation dislocation of air inlet on the two peripheral side wall, thereby realize the variation of air inlet aperture size and closing of air inlet, finally satisfy the technological requirement of aspects such as the frequency of the compound pulsation of jigging machine and amplitude.

Compared to existing technology, this novel beneficial effect is:

1, greatly simplified the air-valve structure

Air-valve mainly is made up of spool and valve pocket two big parts, and circular spool places in the circular valve pocket, offers air inlet on the two side, the rotation formation of spool and the mutual dislocation of valve pocket, thereby the variation of realization air inlet aperture size.Add the motorized motions mode that adopts, realize driving by motor.The air-valve structure is very simple, has increased the security reliability of operation, and has improved the adaptability to high dust, high humility work condition environment.Simultaneously, reduced manufacturing cost.

2, greatly improve the valve area scope, can satisfy the technological requirement of jigging machine composite vein dynamic frequency and amplitude change better.

Under the same external dimensions condition, compare with the cover plate air-valve with existing jig piston valve, on the one hand, owing to adopt motor-driven spool mode, this is novel to have that conversion speed is fast, intake changes advantage greatly; On the other hand, because air inlet is arranged at the bottom of the valve and the periphery of the whole sidewall of valve pocket on, its maximum opening can reach the over half of the whole peripheral side wall area of spool, thereby, the excursion of the air inlet aperture of this novel air-valve is more than the several times of existing air-valve, has big, the security under high dust, high humility operating mode of moment intake, advantage that reliability is high.

Description of drawings

Fig. 1 is this novel structure chart;

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

Fig. 3 is the stereogram of valve pocket shown in Figure 1;

Fig. 4 Fig. 5 is respectively the front view and the left view of upper end cover shown in Figure 1;

Fig. 6 is the stereogram of upper end cover shown in Figure 4;

Fig. 7 is the front view of spool shown in Figure 1;

Fig. 8 is the stereogram of spool shown in Figure 7;

Fig. 9 stereogram that to be spool shown in Figure 8 dissectd after half.

The specific embodiment

Fig. 1 Fig. 2 illustrates, this novel vertical rotation numerical control wind valve structure is: main shaft 14 vertically is installed between upper end cover 18 and the bottom end cover 15 through bearing, valve pocket 16 is connected with upper end cover 18 and bottom end cover 15 respectively, the spool 17 that is positioned at valve pocket 16 inboards is installed on the main shaft 14, leave uniform respectively bar shaped air inlet 16a, the 17a of having on the circular side wall of rotating intermittence and valve pocket 16 and spool 17 between spool and the valve pocket, have air outlet 15a on the bottom end cover 15; Preferably, valve pocket 16 is connected to one with upper end cover 18, and valve pocket is connected with bottom end cover 15 contacts.On the contact-making surface of valve pocket 16 bottoms and bottom end cover 15 sealing ring can be set.Leave running clearance between the upper surface of spool 17 lower surfaces and bottom end cover.Embodiment: the overall diameter of spool 17 is 300mm, and the bar shaped air inlet on spool 17 and the valve pocket 16 is 12 (referring to Fig. 3, Fig. 7, Fig. 8, Fig. 9).Certainly, the external diameter of spool can have a series of specifications, and the bar shaped air inlet on spool and the valve pocket can correspondingly be offered a plurality of.

Referring to Fig. 1, motor-driven mechanism is: motor 1 is connected with decelerator 3 through shaft coupling 2, and decelerator main shaft 4 is connected with main shaft 14 through hitch bar.Decelerator 3 is installed on the base plate 5, and base plate 5 is fixed on upper end cover 18 end faces through four

support columns

6,7,8,9.The hitch bar structure is: decelerator main shaft 4 and main shaft 14 butt joints (contact), and the two connects through flat key 12, and is set with axle sleeve 10 on the connecting portion of the two, and axle sleeve 10 lower ends are fixed on the upper end cover 18.Have screw thread on the contraction position of axle sleeve 10 epimeres, locking nut 11 spins on it, be fitted between the shoulder of locking nut 11 and axle sleeve 10 as the positioning disk 13 of sensor installation.Can select existing other shaft coupling for use between decelerator main shaft 4 and the main shaft 14, as, positive coupling, yielding coupling, NZ arch jaw coupling, gear coupling etc. connect.

Claims

1, a kind of vertical rotating numerical control wind valve, it is characterized in that: main shaft (14) vertically is installed between upper end cover (18) and the bottom end cover (15) through bearing, valve pocket (16) is connected with upper and lower end cap (18,15) respectively, being positioned at the inboard spool (17) of valve pocket (16) is installed on the main shaft (14), leave the uniform respectively bar shaped air inlet (16a, 17a) that has on the circular side wall of rotating intermittence and valve pocket (16) and spool (17) between spool and the valve pocket, have air outlet (15a) on the bottom end cover (15); Also has motor-driven mechanism.

2, according to the described vertical rotating numerical control wind valve of claim 1, it is characterized in that: described valve pocket (16) is connected to one with upper end cover (18), is connected with bottom end cover (15) contact.

3, according to the described vertical rotating numerical control wind valve of claim 2, it is characterized in that: the overall diameter of described spool (17) is 300mm, and the bar shaped air inlet on spool (17) and the valve pocket (16) is 12.

4, according to claim 1 or the described vertical rotating numerical control wind valve of 2 or 3 arbitrary claims, it is characterized in that: described motor-driven mechanism is: motor (1) is connected with decelerator (3) through shaft coupling (2), and decelerator main shaft (4) is connected with main shaft (14) through hitch bar.

5, according to the described vertical rotating numerical control wind valve of claim 4, it is characterized in that: described decelerator (3) is installed on the base plate (5), and base plate (5) is fixed on upper end cover (18) end face through four support columns (6,7,8,9).

6, according to the described vertical rotating numerical control wind valve of claim 5, it is characterized in that: described hitch bar structure is: decelerator main shaft (4) docks with main shaft (14), the two connects through flat key (12), and be set with axle sleeve (10) on the connecting portion of the two, axle sleeve (10) lower end is fixed on the upper end cover (18).

7, according to the described vertical rotating numerical control wind valve of claim 6, it is characterized in that: have screw thread on the contraction position of described axle sleeve (10) epimere, locking nut (11) spins on it and is fitted between the shoulder of locking nut (11) and axle sleeve (10) as the positioning disk (13) of sensor installation.