Canned Tuna is an important variety of canned fish, canned tuna processing is the main species of albacore tuna and
yellow-fin tuna, canned tuna has many varieties, including Canned Tuna in
Brine, Canned Tuna in Tomato Sauce, Canned Tuna In Sunflower Oil, Canned Tuna
in Vegetable Oil. In addition the tuna muscle more sulfur-containing protein,
generally use the anti sulfur acid tin coating as a whole and canned container.
Canned fishes are made in our sub company-Zhejiang
XingWang LongSheng Food Co.,Ltd. The company now has two factories(can branch
and loin branch) and the main production equipment are: 3 processing capacity
of 60 mt(materials)/day canned fish production lines; 4 processing capacity of
50 mt(materials)/day frozen cooked tuna loin production lines; 3 freezing
capacity of 80 mt/day freezer rooms and 1 disposing capacity of 1000m³/day
waste-water treatment plant. All the key equipment of every plant are imported
from Thailand or Japan.
We will always strive to create more
delicious, natural and safer marine health food.
Canned Tuna Canned Tuna,Canned Tuna In Brine,Canned Tuna In Sunflower Oil,Canned Tuna In Vegetable Oil TAIZHOU XINGWANG AQUATIC PRODUCT CO., LTD. , https://www.tzxingwang.com
The hard-filled seal is attached to the piston rod or packing box by means of the pressure difference between the coil spring or the gas to obtain a self-tight seal. Generally, different types of sealing rings are selected according to the gas pressure difference, the gas property, the sealing requirements, the machine structure, and the habit of use.
3.1 Split-type hard packing seal
3.1.1 Low-pressure three-valve seals Figure 29.6-8 shows the construction and assembly of a low-pressure three-valve seal. The sealing ring is formed by splicing three one-way oblique arc blocks, which are pressed on the piston rod by a coil spring installed on the outer circumference. Each group has two sealing rings, which are staggered and fixed with cylindrical pins to prevent walking. According to the working conditions of the sealing device, many can be composed of eight groups. Since the sealing ring is in the form of a one-way oblique port, the unit pressure of the piston rod is not uniform, and the unit pressure of the acute angle is large, so the wear is also large during operation. After the seal ring wears, there is inevitably a gap at the adjacent two-valve interface, which cannot prevent gas leakage. Therefore, the low-pressure single-inclined three-valve seal is only suitable for working conditions with a pressure difference of 1.0 MPa or less. It is a standardized seal.
The main dimensions and machining accuracy of the three-lobe oblique seal are shown in Tables 29.6-42. d B D D 0 Spring selection Nominal size tolerance Nominal size tolerance 25 +0.023 7 -0.015
-0.055 40 46 0.5×3.5×100 30 45 52 0.5×3.5×100 35 +0.027 50 60 0.5×3.5×111 40 55 70 0.5×3.5×123 45 8 60 78 0.5×3.5×136 50 70 87 0.8×4.8×195 55 +0.030 75 98 0.8×4.8×208 60 80 105 0.8×4.8×223 65 85 112 0.8×4.8×236 70 90 120 0.8×4.8×249 80 105 140 0.8×4.8×289
Figure 29.6-8 Low-pressure three-lobed oblique seal
1—cylinder pin; 2—cylon pin hole; 3—spring
3.1.2 Medium pressure three and six valve seals
The main dimensions and machining accuracy of the three- and six-valve seals are shown in Figure 29.6-10 and Tables 29.6-43.
Split-valve flat packing seals, in addition to the above two standard types, there are several non-standard types, see Table 29.6-44.
Figure 29.6-9 Medium-pressure three- and six-valve sealing device
a) six-petal; b) three-petal
1—cylinder pin; 2—cylon pin hole; 3—spring
Figure 29.6-10 Three- and six-valve seal parts
a) Three-petal; b) Six-petal watch 29.6-43 Three- and six-valve seal size and machining accuracy (mm)
Table 29.6-44 Non-standard split-valve flat seals d D B ? Spring selection Nominal size tolerance Nominal size tolerance 25 +0.023 50 7 -0.015
-0.055 1.5 0.5×3.5×123 30 55 0.5×3.5×123 35 +0.027 60 0.5×3.5×126 40 65 0.5×3.5×147 45 70 8 0.8×4.8×195 50 75 0.8×4.8×208 55 +0.030 80 0.8×4.8×223 60 90 0.8×4.8×249 65 95 0.8×4.8×266 70 100 0.8×4.8×289 80 110 0.8×4.8×307 90 +0.035 120 9 2 1×5.5×335 100 130 1×5.5×364 110 140 1×5.5×394 120 150 1×5.5×420 130 +0.040 160 1×5.5×449 d D B ? d 1 Spring selection Nominal size tolerance Nominal size tolerance Nominal size tolerance 25 +0.023 50 7 -0.015
-0.055 1.5 3 +0.02 0.5×3.5×123 30 50 0.5×3.5×123 35 +0.027 60 0.5×3.5×133 40 65 0.5×3.5×147 45 70 8 4 +0.029 0.8×4.8×195 50 75 0.8×4.8×208 55 +0.030 80 0.8×4.8×223 60 90 0.8×4.8×249 65 95 0.8×4.8×266 70 100 0.8×4.8×289 80 110 0.8×4.8×307 90 +0.035 120 9 2 1×5.5×335 100 130 1×5.5×364 110 140 1×5.5×392 120 150 1×5.5×420 130 +0.040 160 1×5.5×449 name structure diagram Description Wedge ring The cutting arrangement is reasonable, the gap is small, the tightness is good, and the leakage is only equivalent to 1/2 of the standard type. Wedge ring Better than the strength of the cut-off opening, suitable for graphite seals Shoulder seal The use of the oblique shoulder causes the tightening spring to generate an axial component: the structure is simplified, and the 榫 structure blocks the leakage passage, requiring only one turn per stage, and the size between the shafts is small. However, it is easy to break, the joint surface is inconvenient to grind, and the main graphite seal is manufactured.
Hard filler seal
A sealing filler made of metal, graphite, filled with tetrafluoroethylene or the like is called a hard filler seal. It has higher heat resistance, pressure resistance and high speed performance than soft packing seals, and is widely used for reciprocating sealing and rotary sealing of compressors, piston pumps and other equipment. In order to compensate for wear and to accommodate shaft runout, hard-filled seals are typically constructed in a split, open or lip configuration.
Table 29.6-42 Main dimensions and machining accuracy of three-lobed oblique seals (mm)
When the pressure is between 1 and 10 MPa, the three- and six-valve seals shown in Figure 29.6-9 are used. Each set of seals in the sealing device is composed of two sealing rings, one sealing ring on the high pressure side is a three-petal type, and the other sealing ring on the low pressure side is a six-petal type. The interfaces are staggered and fixed to each other by pins, each of which is clamped to the piston rod by a spring ring. Each sealing ring retains about 1.5 to 2 mm in the radial gap during assembly to compensate for the wear of the sealing ring. The radial gap of the inner three lobes of the six-valve seal is blocked in the axial direction by the end face of the three-ring seal, and is sealed in the radial direction by the outer three lobes.