CN202371191U

CN202371191U - Single disc valve

Info

Publication number: CN202371191U
Application number: CN2011204539713U
Authority: CN
Inventors: 郭玉生; 李楚林; 丁英仁; 刘金贤
Original assignee: Beijing Aerospace Propulsion Institute; Beijing Aerospace Petrochemical Technology and Equipment Engineering Corp Ltd
Current assignee: Beijing Aerospace Propulsion Institute; Beijing Aerospace Petrochemical Technology and Equipment Engineering Corp Ltd
Priority date: 2011-11-16
Filing date: 2011-11-16
Publication date: 2012-08-08
Anticipated expiration: 2021-11-16

Abstract

The utility model relates to the technical field of switching valves for a pneumatic conveying system and in particular discloses a reversely sealed single disc valve. An inlet valve body of the single disc valve has a cylinder structure of which the upper and lower ends are provided with flange plates, and a valve rod hole is formed in the flange plate at the lower end of the inlet valve body; an outlet valve body has a funnel type structure of which the upper and lower ends are provided with flange plates, the flange plate at the upper end of the outlet valve body is matched with the flange plate at the lower end of the inlet valve body, a valve disc has an inverted conical disc structure with sharp edges, and a valve rod component penetrates through the valve rod hole of the inlet valve body and is arranged between the inlet valve body and the outlet valve body, so that the valve rod component can drive the valve disc to open and close a channel on a cylindrical lower end face of the inlet valve body. Due to a funnel type valve cavity in the single disc valve, the influence of material accumulation and slag agglomeration on the action of the valve due can be eliminated; meanwhile, the single disc valve is simple in structure and convenient to maintain, compared with ball sealing valves of the same specification, hardness and density and other material cutting valves, the single disc valve is light in weight, low in cost and long in service life, and a plurality of single disc valves can be connected in series or interchanged with ball valves.

Description

A kind of single-deck valve

Technical field

The utility model belongs to air-transport system and uses the switch valve technical field, is specifically related to a kind of single-deck valve of reverse sealing.

Background technique

The plate valve of double disk structure is because it has obtained application widely in industries such as polysilicons from good characteristics such as cleaning, self-grind, self compensations.Polysilicon industry technology fitness for purpose valve is a two way sealed, and treatment media is mainly silica flour.Mobile better, the prevented from caking of silica flour.The using effect and the life-span of plate valve are much better than hard seal ball valve.

But in air-transport system such as Coal Chemical Industry and power plant and similar operating mode, downstream pressure is big when valve closing, needs oppositely sealing.The medium of handling is coal dust, coal ash etc., though hardness is low, caking easily makes moist.The moushroom valve valve pocket of double disk structure is a cylindrical body, relatively easy buildup, and valve disc contacts with buildup during action, and when caking phenomenon appears in buildup, the action of valve will inevitably be affected.

In the air-transport system of shell SCGP coal gasifying process and other domestic and international Coal Chemical Industry technologies, the feeding valve between the tank body, discharge valve, lock slag valve and equilibrium valve are mainly hard seal ball valve.Because ball valve valve pocket internal memory is in the dead band, material is piled up easily, causes valve event moment to increase, even stuck fully.The abrading section of spheroid is fixed in addition, causes surface treated hardened layer to be destroyed within a short period of time, and generally be no more than half a year in working life of inlet ball valve.The bivalve integral type plate valve of part manufacturer production; With two independently plate valve be incorporated in the valve body; Though part has reduced structure weight, arbitrary cover sealing or moving system lost efficacy and will cause whole valve invalidation in the valve, had reduced the reliability of valve.

The valve of Pneumatic ash conveying system of power plant adopts the dome valve of soft seal more; Though low price; But the sealing position is suffered the wearing and tearing of material easily and is occurred leaking; Dome can suffer washing away of high speed belt ash gas during valve closing, can make dome groove occur when serious and sealing was thoroughly lost efficacy, and causes the system can not pressurize and have to change valve.The life-span of valve is short, and the maintenance cost of system is higher.

Summary of the invention

The purpose of the utility model is to provide a kind of air-transport system and similar operating mode to use the single-deck valve, can effectively solve problems such as the buildup that occurs in air-transport system and the similar operating mode, stuck, erosion.

The technological scheme of the utility model is following: a kind of single-deck valve; It comprises inlet valve body, outlet valve body, valve rod assembly and valve disc; Wherein, The inlet valve body has the cylindrical drum structure of flange plate for two ends up and down, and the axis of this cylindrical drum do not overlap with the axis of lower end disc structure flange plate, and on the valve body lower end flange plate that enters the mouth, has and the valve rod hole of the cylindrical hole structure that the valve body cylindrical drum that enters the mouth is parallel to each other; The outlet valve body has the funnel form structure of flange plate for two ends up and down; Its upper flanges dish is complementary with the lower end flange plate of inlet valve body, and outlet valve body lower end cylindrical drum structure and lower end flange plate thereof are identical with the cylindrical drum and the upper flanges dish symmetrical configuration thereof of inlet valve body, and on same axis; Valve rod assembly passes the valve rod hole of inlet valve body, and is installed between inlet valve body and the outlet valve body, makes valve rod assembly can drive the passage that valve disc that an edge becomes sharp edge inverted cone disc structure opens or closes the valve body cylindrical drum lower end surface that enters the mouth.

Described valve rod assembly comprises valve shaft, following guide sleeve and goes up guide sleeve that wherein, following guide sleeve and last guide sleeve are ladder cylindrical hole structure; Following guide sleeve be installed in the outlet valve intracoelomic cavity with the corresponding step groove of inlet valve body valve rod hole in, above guide sleeve down, be equipped with successively connecting plate and on guide sleeve, last guide sleeve is fixed in the valve body valve rod hole that enters the mouth; Valve shaft passes guide sleeve, connecting plate and following guide sleeve successively; And be fixedly connected with connecting plate, rocking arm and valve shaft upper end be through quartet connection, and compress through screw and pad; The opposite side of connecting plate is connected with valve disc, and valve disc is fitted tightly the lower end in inlet valve body cylindrical drum.

Also be provided with ash stop plate B between the right side of described connecting plate and the last guide sleeve, also be provided with ash stop plate C between the right side of connecting plate and the following guide sleeve, and connecting plate and ash stop plate B and the contacted zone of ash stop plate C have certain degree of finish; The left side of connecting plate is fixedly connected with the sleeve of cylindrical drum structure, and in sleeve, spring and spring seat is installed successively, and ash stop plate A is installed on spring seat; The upper end of sleeve places the cylinder groove of valve disc lower end, and the spring after the compression withstands on the lower end surface of valve disc through spring seat, and the valve disc upper-end surface is fitted tightly on the valve seat of inlet valve body cylindrical drum lower end.

In the annular chamber between described valve shaft and the inlet valve body upper valve rod hole filler assembly is installed, and compresses through Gland, realize the sealing to valve rod assembly, wherein, Gland is connected with the inlet valve body through screw bolt and nut B.

Between described inlet valve body and the outlet valve body valve body pad is housed, and compresses through stud and nut A connection.

The end of described rocking arm is connected with the driving mechanism cylinder through bearing pin, wherein the driving mechanism cylinder through Bearing Installation on the support that is fixed on the valve body lower end flange plate that enters the mouth.

Described inlet valve body is separately installed with wear-resisting lined steel pipe A and lined steel pipe B with exporting in the valve body in the cylindrical drum barrel, and in the funnel form valve pocket of outlet valve body, is coated with wearable hard alloy.

The upper flanges dish of described inlet valve body all has several through holes along circumference with the lower end flange plate of outlet valve body, can realize the connected in series of a plurality of single-deck valves.

The remarkable result of the utility model is: the funnel form valve pocket of the described a kind of single-deck valve middle outlet valve body of the utility model can be eliminated because of solid accumulation, lump to the influence of valve event; Simultaneously, the single-deck structure has reduced action frictional force, has reduced the influence of the radial imbalance force of valve rod assembly to filler assembly, has improved the working life of stem packing assembly; Simultaneously, the single-deck valve arrangement is simple, and is easy to maintenance, more in light weight than unclassified stores cutting-off valves such as the hard density blocking of same specification valves, cost is low, the life-span is long, and a plurality of single-deck valve can connect, or installs and uses with the exchange of ball valve.

Description of drawings

Fig. 1 is a kind of single-deck valve arrangement schematic representation shown in the utility model;

Fig. 2 is an A-A sectional drawing among Fig. 1;

Fig. 3 is the plan view of a kind of single-deck valve shown in the utility model;

Fig. 4 is described two the single-deck valve cascaded structure schematic representation of the utility model;

Among the figure: 1, inlet valve body; 2, outlet valve body; 3, valve rod assembly; 4, filler assembly; 5, spring; 6, ash stop plate A; 7, spring seat; 8, valve disc; 9, sleeve; 10, connecting plate; 11, ash stop plate B; 12, following guide sleeve; 13, ash stop plate C; 14, go up guide sleeve; 15, Gland; 16, valve body pad; 17, stud; 18, nut A; 19, rocking arm; 20, valve shaft; 21, pad; 22, screw; 23, valve seat; 24, lined steel pipe A; 25, lined steel pipe B; 26, bolt; 27, nut B; 28, driving mechanism cylinder; 29, bearing; 30, bearing pin; 31, support.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is done further explain.

Shown in Fig. 1～4; A kind of single-deck valve comprises inlet valve body 1, outlet valve body 2, valve rod assembly 3 and valve disc 8, wherein; Inlet valve body 1 has the cylindrical drum structure of flange plate for two ends up and down; Upper flanges rim circumference evenly has some through holes, and lower end flange plate axis is inconsistent with inlet valve body 1 cylindrical drum axis, and on the flange plate of lower end, has and the valve rod hole of the cylindrical hole structure that valve body 1 cylindrical drum that enters the mouth is parallel to each other; Outlet valve body 2 has the funnel form structure of flange plate for two ends up and down; Its upper flanges dish is complementary with the lower end flange plate of inlet valve body 1; Outlet valve body 2 lower end cylindrical drum structures and lower end flange plate are identical with the cylindrical drum and the upper flanges dish structure of inlet valve body 1, and on same axis; Valve rod assembly 3 comprises valve shaft 20, following guide sleeve 12 and goes up guide sleeve 14; Wherein, Following guide sleeve 12 is ladder cylindrical hole structure with last guide sleeve 14; Following guide sleeve 12 be installed in outlet valve body 2 inner chambers with the corresponding step groove of inlet valve body 1 valve rod hole in, above guide sleeve 12 down, install successively ash stop plate C13, connecting plate 10, ash stop plate B11 and on guide sleeve 14, last guide sleeve 14 is fixed in valve body 1 valve rod hole that enters the mouth; Between inlet valve body 1 and the outlet valve body 2 valve body pad 16 is housed; And connect through stud 17 and nut A18 and to compress, with connecting plate 10 and down guide sleeve 12 be pressed between inlet valve body 1 and the outlet valve body 2, and realize sealing to the single-deck valve body; Valve shaft 20 stretches into valve rod hole; Pass guide sleeve 14, connecting plate 10 and following guide sleeve 12 successively, and be fixedly connected, filler assembly 4 is installed in the annular chamber between valve shaft 20 and the valve rod hole with connecting plate 10; And compress through Gland 15; Realization is to the sealing of valve rod assembly 3, and wherein, Gland 15 is connected with inlet valve body 1 with nut B27 through bolt 26; Rocking arm 19 and valve shaft 20 upper ends are through quartet connection; And compress; the end of rocking arm 19 links to each other with driving mechanism cylinder 28 on being fixed on support 31 through bearing pin 30, and wherein, support 31 is fixed on the valve body 1 lower end flange plate that enters the mouth; driving mechanism cylinder 28 is fixed on the support 31 through bearing 28, and driving mechanism cylinder 28 is swung up and down around bearing 28 through screw 22 and pad 21; Valve disc 8 has the inverted cone disk of cylinder groove for the lower end, and the edge of valve disc 8 is sharp edge, and material is had scraping action; Connecting plate 10 right sides and ash stop plate B11 and the contacted zone of ash stop plate C13 have higher degree of finish; Can reduce the surface friction drag that connecting plate 10 is produced when rotating with ash stop plate B11 and ash stop plate C13; The left side of connecting plate 10 is fixedly connected with the sleeve 9 of cylindrical drum structure; And spring 5 and spring seat 7 are installed in sleeve 9 successively, and ash stop plate A6 is installed on spring seat 7, prevent that material from getting in the spring 5; The upper end of sleeve 9 places the cylinder groove of valve disc 8 lower ends; And the spring 5 after the compression withstands on the lower end surface of valve disc 8 through spring seat 7; Make connecting plate 10 drive valve disc 8 when valve shaft 20 rotates, valve disc 8 fits tightly on the valve seat 23 of inlet valve body 1 cylindrical drum lower end; Inlet valve body 1 is separately installed with wear-resisting lined steel pipe A24 and lined steel pipe B25 with exporting in the valve body 2 in the cylindrical drum barrel, and in the funnel form valve pocket of outlet valve body 2, is coated with wearable hard alloy.

The concrete working procedure of the described a kind of single-deck valve of the utility model is: electronic, surge or the type hand driving mechanism drives rocking arm 19 swings; the valve shaft that rocking arm 19 drives in the valve components 3 rotates; thereby through connecting plate 10; driving valve disc 8 be that rotate at the center with valve shaft 20, realizes the enter the mouth switch motion of valve body 1 lower value seat 23 of 8 pairs of valve discs; Funnel form valve pocket in the outlet valve body 2 can effectively be avoided the accumulation of material, and the sharp edge of valve disc 8 can have scraping action to material, prevents that material from getting into valve disc 8 and valve seat 23 formed sealing surfaces; Ash stop plate B11 between last guide sleeve 14 and the connecting plate 10, and down guide sleeve 12 and ash stop plate C13 between the connecting plate 10 can avoid material to get into going up causing the scuffing of guide sleeve 14, following guide sleeve 12 and valve shaft 20 in guide sleeve 14 and the following guide sleeve 12.

The described a kind of single-deck valve of the utility model is identical with the structure length of the U.S. mark of same specification ball valve; Can realize using with the exchange of ball valve; Simultaneously, can two identical this kind single-deck valves series connection is used, and behind one section of the on-line operation; Two single-deck valves exchange and use up and down, improve the working life of valve.

Claims

1. single-deck valve; It is characterized in that: it comprises inlet valve body (1), outlet valve body (2), valve rod assembly (3) and valve disc (8); Wherein, Inlet valve body (1) has the cylindrical drum structure of flange plate for two ends up and down, and the axis of this cylindrical drum do not overlap with the axis of lower end disc structure flange plate, and on valve body (1) the lower end flange plate that enters the mouth, has and the valve rod hole of the cylindrical hole structure that the valve body that enters the mouth (1) cylindrical drum is parallel to each other; Outlet valve body (2) has the funnel form structure of flange plate for two ends up and down; Its upper flanges dish is complementary with the lower end flange plate of inlet valve body (1), and outlet valve body (2) lower end cylindrical drum structure and lower end flange plate thereof are identical with the cylindrical drum and the upper flanges dish symmetrical configuration thereof of inlet valve body (1), and on same axis; Valve rod assembly (3) passes the valve rod hole of inlet valve body (1); And be installed between inlet valve body (1) and outlet valve body (2), make valve rod assembly (3) can drive the passage that valve disc (8) that an edge becomes sharp edge inverted cone disc structure opens or closes valve body (1) the cylindrical drum lower end surface that enters the mouth.

2. a kind of single-deck valve according to claim 1; It is characterized in that: described valve rod assembly (3) comprises valve shaft (20), following guide sleeve (12) and goes up guide sleeve (14); Wherein, following guide sleeve (12) and last guide sleeve (14) are ladder cylindrical hole structure, following guide sleeve (12) be installed in outlet valve body (2) inner chamber with the corresponding step groove of inlet valve body (1) valve rod hole in; Connecting plate (10) is being installed successively and is going up guide sleeve (14) above the guide sleeve (12) down; Last guide sleeve (14) is fixed in inlet valve body (1) valve rod hole, and valve shaft (20) passes guide sleeve (14), connecting plate (10) and following guide sleeve (12) successively, and is fixedly connected with connecting plate (10); rocking arm (19) and valve shaft (20) upper end are through quartet connection; and compress through screw (22) and pad (21), the opposite side of connecting plate (10) is connected with valve disc (8), and valve disc (8) is fitted tightly the lower end in inlet valve body (1) cylindrical drum.

3. a kind of single-deck valve according to claim 2; It is characterized in that: also be provided with ash stop plate B (11) between the right side of described connecting plate (10) and the last guide sleeve (14); Also be provided with ash stop plate C (13) between the right side of connecting plate (10) and the following guide sleeve (12), and connecting plate (10) has certain degree of finish with ash stop plate B (11) and the contacted zone of ash stop plate C (13); The left side of connecting plate (10) is fixedly connected with the sleeve (9) of cylindrical drum structure, and spring (5) and spring seat (7) are installed in sleeve (9) successively, and ash stop plate A (6) is installed on spring seat (7); The upper end of sleeve (9) places the cylinder groove of valve disc (8) lower end, and the spring (5) after the compression withstands on the lower end surface of valve disc (8) through spring seat (7), valve disc (8) upper-end surface is fitted tightly enter the mouth on the valve seat (23) of valve body (1) cylindrical drum lower end.

4. according to claim 2 or 3 described a kind of single-deck valves; It is characterized in that: in the annular chamber between described valve shaft (20) and inlet valve body (1) the upper valve rod hole filler assembly (4) is installed; And compress through Gland (15); Realization is to the sealing of valve rod assembly (3), and wherein, Gland (15) is connected with inlet valve body (1) with nut B (27) through bolt (26).

5. a kind of single-deck valve according to claim 1 is characterized in that: between described inlet valve body (1) and the outlet valve body (2) valve body pad (16) is housed, and compresses through stud (17) and nut A (18) connection.

6. according to claim 2 or 3 described a kind of single-deck valves; It is characterized in that: the end of described rocking arm (19) is connected with driving mechanism cylinder (28) through bearing pin (30), and wherein driving mechanism cylinder (28) is installed on the support (31) that is fixed on inlet valve body (1) lower end flange plate through bearing (28).

7. according to each described a kind of single-deck valve of claim 1～3; It is characterized in that: be separately installed with wear-resisting lined steel pipe A (24) and lined steel pipe B (25) in the cylindrical drum barrel in described inlet valve body (1) and the outlet valve body (2), and in the funnel form valve pocket of outlet valve body (2), be coated with wearable hard alloy.

8. according to each described a kind of single-deck valve of claim 1～3, it is characterized in that: the upper flanges dish of described inlet valve body (1) all has several through holes along circumference with the lower end flange plate of outlet valve body (2), can realize the connected in series of a plurality of single-deck valves.