Compared with the unregulated spacer throttle plate, the maximum bending deformation of the throttle valve is reduced when the valve is opened, and the valve opening pressure and speed are lowered. In order to open the valve at the same speed, when adjusting the gasket inside the throttle plate, the thickness of the designed single-piece throttle plate should be greater than the design thickness h when the original gasket is not adjusted; on the contrary, it should be smaller than the original adjustment pad. The design thickness h of the film.
It can be seen from the above formula that the maximum amount of bending deformation of the valve piece when the valve is opened is related to the thickness h of the adjusting pad. When the thickness of the adjusting gasket is increased, the amount of deformation of the valve opening of the throttle valve is reduced, and the valve opening pressure and speed are decreased; otherwise, the valve opening pressure and speed are increased.
It can be ensured that the bending deformation of the superimposed throttle plate is the same as that of the single-piece throttle valve when the equivalent thickness of the superimposed valve plate is equal to the design thickness of the single-piece valve plate, which is equal to the design thickness h of the single-piece valve plate, so as to realize synchronous valve opening.
Adjusting the effect of the gasket on the valve opening speed The effect of adjusting the gasket on the valve opening speed of the oil and gas spring is related to the orientation and thickness of the adjusting gasket relative to the throttle plate. When the adjusting washer is inside the throttle plate, the valve opening speed of the oil and gas spring will decrease; when the adjusting washer is outside the throttle plate, the valve opening speed of the oil and gas spring will increase. The valve opening speed change value is related to the thickness of the adjusting valve plate. When the thickness of the adjusting valve plate is increased, the pressure change value will increase; otherwise, the pressure change value will decrease.
The rate of change of the valve opening speed caused by the adjusting washer is GV=hah0 (8). When the adjusting washer ha is inside the throttle plate, the valve opening speed reduction amount $VK is proportional to the adjusting washer thickness ha. When the adjustment pad ha is outside the throttle plate, the valve opening speed increase amount $VK is proportional to the adjustment pad thickness ha.
Adjust the thickness of the gasket ha in the range of 00.8mm. When the thickness of the adjusting gasket is different, the rate of change of the valve opening speed, the speed change and the valve opening speed are shown. The rate of change of the valve opening speed is adjusted with the adjusting pad. The sheet thickness variation curves are shown separately.
Conclusion Through the analysis and test of the influence of the adjusting gasket on the characteristics of the oil and gas spring, it can be known that for the oil-oil spring throttle valve, when the stress of the single-piece valve plate exceeds the allowable stress.
The multi-piece superimposed valve piece is split and designed according to the equivalent relationship of deformation such as the same pressure, and the valve opening speed can be reduced by adjusting the gasket. When the thickness of the adjusting gasket is equal to the difference between the sum of the thicknesses of the stacked valve sheets and the equivalent thickness, simultaneous valve opening at the same equivalent thickness can be achieved.
If the multi-piece superimposed throttle valve is not provided with the adjusting washer, in order to realize the synchronous opening of the valve with the original design single-thickness throttle valve, the superimposed valve plate can only be designed according to the synchronous valve opening equivalent relationship. Therefore, at this time, the equivalent thickness of the superimposed valve plate is smaller than the design thickness of the single-piece valve plate, which inevitably makes the damping force after the valve opening of the oil-gas spring is smaller than the damping force of the original monolithic valve oil-gas spring, that is, n-piece superposition In the case of the valve without the adjusting gasket, in order to ensure the synchronous opening of the valve is to reduce the equivalent thickness of the superimposed throttle plate.
Interior & floor tiles
First, according to the space classification:
Kitchen
Tiles, Living Room Tiles, Restaurant Tiles, Balcony Tiles, Bathroom
Tiles, Study Tiles, Bedroom Tiles, Wall Tiles, Stairs Tiles
Second, according to the function classification:
Anti-skid
tiles, wear-resistant tiles, anti-fouling tiles, anion tiles,
electrostatic tiles, high strength tiles, permeable tiles, waterproof
tiles, antifreeze tiles
Third, in accordance with the production process points:
There are mainly glazed tiles, unglazed tiles, whole body tiles, polished tiles
Glazed tiles: the body surface to impose zirconium white glaze, glaze protection, transparent glaze glaze medium ceramic tiles;
Unglazed brick: the body surface does not impose various types of glaze, directly naked ceramic tile burning;
Full-body brick: ceramic tile body through the fabric, seepage and other technology coloring glazed brick and unglazed brick
Polished: refers to the surface of the tile after a polished brick process.
Fourth, the main tile category commentary
1 Full cast glaze tile
Full
cast glaze tile is a glaze polishing process can be a special formula
glaze, which is applied to the last of the antique brick glaze, the
current general transparent glaze or transparent convex glaze, applied
to the all-thrown Glaze full throw glaze set of polished brick and
antique brick advantages in one.
Glazed
polished glazed tiles as smooth as bright as polished, at the same time
glazed colors such as antique brick-like pattern rich, thick colors or
brilliant. Touch by hand, the surface light and soft, smooth does not
protrude, appears crystal clear, underglaze stone texture clear and
natural, and the upper transparent glaze fusion, like a layer of
transparent crystal glaze film covering, making the overall level more
three-dimensional clarity.
Full
cast glazed tile surface as long as there is about 0.5-1mm glaze layer
on it. The polished brick also 2-3mm of fine material; polishing glaze
pattern simulation is easy to do, the cost is low. Full cast glaze tile
production more environmentally friendly, glazed layer firing faster,
lower energy consumption, glaze polishing than the lower energy
consumption and higher yields. Glazing after the ultra-flat glaze and
other products, is the full cast glaze product upgrades.
2 ceramic stone
In
the line known as ceramic glass ceramic composite board, is a layer of
3-5mm glass-ceramic composite ceramic vitrified surface, after the
second sintering completely integrated into high-tech products, in
simple terms, microcrystalline Stone and other ceramic tile products is
the biggest difference between the surface layer of glass-ceramic.
Microcrystalline stone tile,
as a polished brick, antique tile after another of the most attractive
new category, also known as micro-ceramic stone micro-jade, jade spar,
etc.;
3 Rustic porcelain tile
Antique
tiles is a kind of glazed ceramic tile. The embryo body is made of
porcelain (about 3% of water absorption) or quality (about 8% of water
absorption). It is used for building wall and floor. Because of the
color and texture, it is similar to stone veneer After a long time, the
industry generally referred to as antique brick.
Antique
brick is not a product of China's building ceramics industry, is
imported from abroad. Antique brick is evolved from the color glazed
tiles, in essence, glazed porcelain tiles. Compared with ordinary glazed
tiles, the difference is mainly reflected in the glaze color above.
4 polished tiles
Polished
brick is the surface of the whole body of brick polished by a bright
brick, is a kind of whole body brick. Relative to the whole brick, the
polished surface to be much more smooth.
Hard
wear-resistant polished tiles, suitable for use in the toilet, kitchen
and other interior space. In the use of seepage technology, based on the
polished tiles can make a variety of Faux Stone Tiles, faux beick tiles effect.
Polished
tiles are also divided into seepage-type polished tiles, micro-brick
(superfine powder), multi-tube fabric, ceramic stone, anti-static
polishing brick and other categories.
Wood
grain brick is a kind of surface appearance of wood grain decorative
patterns of new environmentally friendly building materials.
Sub-original edge (when firing is a long strip, without cutting) and
hardcover side (brick, post-cut paving) two categories, each with
advantages and disadvantages.
Wood
grain brick refers to the surface with natural wood texture pattern
decorative ceramic tiles, divided into two kinds of glazed tiles and
split brick. The former is through the screen printing process or paste
ceramic paper flowers to make the product surface grainy pattern, while
the latter is the use of two or more different colors were burned in the
billet with a vacuum screw extruder spiral mixing After the cut through
the mouth of the formation of the wood-like texture of its usual block
of products split brick.
With
the improvement of technology, wood grain brick products have matured,
according to the surface gloss division, in addition to the traditional
matte wood bricks, but also can be divided into bright wood grain bricks
(full cast glaze wood bricks), soft light Wood grain brick.
6 Faux marble tile
Marble
tiles, refers to a natural marble with realistic texture, color and
texture of a class of ceramic tile products, with natural marble
realistic decorative effect and the superior performance of ceramic
tiles, to abandon the natural marble various natural defects, it is the
epoch-making ceramic industry Innovator is also a masterpiece of the
modern top-level ceramic tile manufacturing process. It is a new ceramic
tile category following porcelain tiles, polished tiles, antique tiles
and ceramic tiles.
Marble tiles have a whole body marble tiles, soft marble tiles, gold marble tiles.
7 tiles
Porcelain
refers to the surface of the wall with a secondary surface of the
patch, is a kind of interior wall, the surface is smooth, belonging to
the whole body brick. Suitable for family and public places in the
bathroom, kitchen;
8 polishing crystal brick tile (K gold brick)
Polished
crystal tiles, also known as K gold tiles, throw glaze, glazed polished
tiles. Under the glaze color technology and the body surface covered
with a layer of transparent frit, the secondary calcination at high
temperature, (gold-plated), polished, the surface of the product
three-dimensional sense of strong, glazed delicate, crystal clear, noble
and luxurious, is a tile In the high-end products.
Interior & Floor Tiles,Tiles For Interior Wall,Tiles For Floor,Tile For Interior Floor
UMS New Materials Industry Co.,LTD , http://www.ums-factory.com