CN201606508U - Wear resistant dust-gas butterfly valve - Google Patents

Abstract

A wear resistant dust-gas butterfly valve resolves problems that an inner cavity of a valve body is worn serially due to air flow impact, and a butterfly valve is poor in sealing effect, can not cut off a gas medium and leaks the gas medium externally. The wear resistant dust-gas butterfly valve is characterized in that a butterfly board (3) is disposed in the middle inside a cylindrical valve body (1), the lower end of the butterfly board (3) is connected with a lower valve stem (2) while the upper end of the butterfly board (3) is connected with an upper valve stem (4), packing (5) is arranged between the upper valve stem (4) and the valve body (1), the upper end of the valve body (1) is provided with a packing gland (6), and a transmission support (7) is arranged on the packing gland (6). The water resistant dust-gas butterfly valve has the advantages of having simple structure and convenient use and maintenance and guaranteeing using property, and is applicable to adjusting and partitioning blast furnace gas dry-method dust removal pipeline systems in the metallurgical industry.

Description

Wear resistant dust and gas butterfly valve

Technical field:

The utility model is specifically related to a kind of wear resistant dust and gas butterfly valve, belongs to the valve machinery manufacturing technology field, is a kind of high temperature resistant, corrosion-resistant, is used for metallurgical industry blast furnace gas dry dusting pipe-line system and plays adjusting, partition effect.

Background technique

Wear resistant dust and gas butterfly valve is a kind of and the matching used a kind of butterfly valve of metallurgical industry blast furnace gas dry dusting pipe-line system, be character and characteristics according to dust-containing airflow, design the equipment that uses for cleaning shaft specially, be mainly used in the cleaning shaft of metallurgy industry blast furnace gas, play adjusting, partition effect, also can be widely used in the ventilation dust-containing airflow pipeline of industries such as smelting, electric power, chemical industry, building materials.Because suitable conduit system temperature height (≤650 ℃), the applying working condition inclement condition, the medium dust loading is big, flow velocity is high, erosion is big, the dust and gas butterfly valve that so just requires system support to use can have good Wear-resistant, high-temperature resistant performance, guarantee life-span and the sealing effect of valve in the spreadable life, and the environmental pollution of avoiding coal gas to leak outside being caused, energy waste, dangerous take place etc., just known to the inventor, the common valve that uses can not satisfy above work requirements at present.

Summary of the invention:

The purpose of this utility model is exactly because the applying working condition inclement condition in order to solve, the system temperature height, the medium dust loading is big, the problem that existing dust and gas butterfly valve wears no resistance, the distortion of valve body butterfly plate is serious, can not use for a long time, but a kind of resolution system medium temperature height that provides, dust loading is big, impurity is many, flow velocity is high, erosion is big can normally use, Wear-resistant, high-temperature resistant, the working life that also can improve valve, the wear resistant dust and gas butterfly valve of the sealing effect of assurance valve.

The utility model is to adopt following technological scheme to realize: a kind of wear resistant dust and gas butterfly valve, be provided with butterfly plate (3) in the middle of it is characterized in that in cylindrical valve body (1), be connected with lower valve rod (2) in the lower end of butterfly plate (3), be connected with upper valve rod (4) in the upper end of butterfly plate (3), between upper valve rod (4) and valve body (1), be provided with filler (5), the upper end of valve body (1) is provided with Gland (6), and Gland (6) is provided with driving support seat (7).During use, because valve body and valve seat adopts cast steel material, and in the batching of cast steel material, add an amount of manganese chromium element, make the wear-resistant abrasion resistance energy of this kind valve seat good, guaranteed at high flow rate dust-containing airflow medium system, wear resistant dust and gas butterfly valve can block the coal gas medium under unexpected situation, guaranteed the usability of wear resistant dust and gas butterfly valve.At medium behind the valve closing body tube of valve body and valve seat and valve seat location is washed away and seriously easily to cause the body tube to penetrate, adopt the width of valve seat and enlarged in thickness improved wear resistance and to valve body near the position wall thickness thickening of valve seat with raising working life and wear resistance.Adopt valve seat to contact by original face and be improved to the line contact, reduce area of contact, help the integral heat sink effect of valve with the seal form of butterfly plate.

The utility model wear resistant dust and gas butterfly valve has that it is simple in structure, uses easy to maintenancely, has guaranteed the advantage of the usability of dust and gas butterfly valve.

Description of drawings:

Accompanying drawing is the wear resistant dust and gas butterfly valve structural representation

Among the figure: 1. valve body, 2. lower valve rod, 3. butterfly plate, 4. upper valve rod, 5. filler, 6. Gland, 7. driving support seat.

Embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing embodiment, wear resistant dust and gas butterfly valve as shown in drawings, and its structure setting is that valve body (1) and butterfly plate (3) all adopt the cast steel high-abrasive material, wear-resistant abrasion resistance can be good; Valve seat and valve body (1) are cast inblock, have guaranteed in high flow rate dust-containing airflow medium system safe in utilization.When operating mode is used, be installed on each a plurality of filler that upper valve rod (4) and lower valve rod (2) locate and tightly seal up valve body by being communicated with of valve rod and the external world, make valve be in whole sealing status, it is zero promptly reaching external leakage, thereby has guaranteed the safe in utilization of valve.When being used in high-temperature operating mode pipeline, owing to adopted the structural type of last lower valve rod, strengthened the heat diffusion area of valve, temperature between valve body and valve rod is reduced fast, it is short working life to have solved filler, the external leakage problem that radiating effect difference between valve (1) and valve rod causes, the use amount of having saved section bar simultaneously reduces the overall weight of valve.This structure has solved body cavity and has been subjected to the air-flow impact wear serious, butterfly valve seal weak effect, the problem that can not block the coal gas medium; This structure has solved the outer leakage problem of valve, and is safe in utilization; Particularly use when high temperature media, rapid heat dissipation has increased the usability of valve; This model utility valve mechanism is simple, and grasp just work side, safe in utilization, for ease of maintenaince, has improved the life-span of valve, and usability promotes greatly.

Claims (1)

1. wear resistant dust and gas butterfly valve, be provided with butterfly plate (3) in the middle of it is characterized in that in cylindrical valve body (1), be connected with lower valve rod (2) in the lower end of butterfly plate (3), be connected with upper valve rod (4) in the upper end of butterfly plate (3), between upper valve rod (4) and valve body (1), be provided with filler (5), the upper end of valve body (1) is provided with Gland (6), and Gland (6) is provided with driving support seat (7).

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