JPS58112014A - Pressure resistant mesh filter cylinder - Google Patents

Abstract

PURPOSE:To enhance filtering efficiency, by providing a filter mesh cylinder to the outer periphery of a rigid cylinder having plural piercing orifices through an auxiliary mesh cylinder to shorten the depth of a filtering orifice. CONSTITUTION:A filter cylinder is constituted from three cylinders, that is, a filter mesh cylinder 1, a reinforcing mesh cylinder 2 and a rigid cylinders 3 in the order of the passing direction of a fluid to be filtered and the filter mesh cylinder 1 is formed by molding a plain weave stainless steel net having a mesh size in conformity with desired filtering preciseness while the reinforcing mesh cylinder 2 is formed from a stainless steel net having a wire diameter resistant to filtering pressure and a mesh size not raising filtering pressure to reinforce the filter mesh cylinder 1 from the inner surface thereof and to prevent the reduction of the discharge passage of the filter mesh cylinder 1 due to direct contact of the inner surface of the filter mesh cylinder 1 with the rigid cylinder 3. The rigid cylinder has plural piercing orifices 4 provided thereto and introduces a filtrate thereinto but the total area of the piercing orifices 4 is wider than the area of an inflow pipe so as not to raise filtering pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a pressure-resistant network f-recess, specifically, a pressure-resistant network suitable for treating a passing fluid containing solids with an accuracy of several micrometers to several tens of micrometers. Regarding mesh f regression.

Conventionally, in precision C-filtering of fluids, the f-recessed part of lines such as bisque sintered metal, sintered metal, and sponge plastics is often used. However, in all of these conventional f-retraction sections, the f-passed fluid is one of them.
The pressure loss when passing through the hole is large, and the height is unnecessarily high.
Overpressure is required, and it is completely impossible to pass through highly viscous fluids, paste-like materials, or pasty-like materials. In addition, it is extremely difficult to recover from clogging, and there is no possibility of automatic recovery from clogging for playback 1 history.

This functional defect of the conventional f-recess is, as will be explained later,
This is due to the fact that the depth of each hole is unusually long. In other words, each of these tubes is made by sintering the constituent material particles into a cylindrical shape, and the one in which the gap between the material particles is continuous and penetrates the tube wall is called one. It has been used as a hole for a long time, and the depth of the hole is the same as the thickness of the cylinder wall.
1 transient degree of several tens of −1, that is, several six times or more of the pore diameter of several tens of μm. However, σ4 filtration is a process in which the fluid to be filtrated is passed through a gap (one hole), and large solids that cannot pass through this are removed.
1 slag) is separated and removed to obtain a 1 filtration fluid (1 liquid) with higher purity.From the origin of this 1 filtration, what is required for the C hole is the size of the void and the void size. It is just that it exists, and there is no sense of necessity in the depth of the void. In this sense, a hole with only a gap and no direction to the center is ideal as a hole,
The voids that exist in dust seeds and are close to the ideal pore are a paulownia-like network.

A mesh is a quadrilateral cylindrical space that is woven by a total of four wire rods, two in length and two in width, and whose length is the wire enclosure (t) - the length of the side and the depth is the diameter of the wire. The cross-sectional area of this mesh space is the smallest area (hereinafter referred to as the narrowest cross-sectional area) in the area surrounded by A, H, c, and u of the one-hole mesh model shown in Figures 1A to 1C. (referred to as a narrow cross-sectional area), and after this point it rapidly widens toward the end.

When the fluid to be evaporated is pressurized into this mesh space due to f-filtration,
Any solid matter larger than the narrowest cross-sectional area mixed in the fluid is blocked from flowing in at the narrowest cross-sectional area, and is separated and left in the space in front of the narrowest cross-sectional area, becoming d4F slag. The small solids that have passed through the narrowest cross-section do not stagnate or stagnate anywhere, but all leak out of the mesh space. In other words, it is the narrowest cross section that effectively plays the role of one hole in separating and removing large solids that exceed precision, and therefore, in a functional sense, the mesh f
Kong's transfer to England is zero. Even if we assume that the depth of the mesh space until the passing fluid flows through 9 is the depth of one hole, f
The forward direction of the hole is only about 1 times the f degree.

For example, with 400 mesh plain weave stainless steel mesh,
The opening of the mesh is 42 μm, the wire diameter is 22 μm, and the depth of the C hole is f.
It is only 0.5 times the temperature of Ji11 tank. In addition, the conventional 1-tube kL-231Q type filter with an accuracy of 5 μm (Tanabe Kukou Co., Ltd.'s P hole depth and 400 mesh stainless steel mesh wire material with 18 μm overlay made of 4-karat gold) The same 5μ+aiiv degrees of aM!fli!
Comparing the depth of the e-holes in the metal net, the former has 20 µm, while the latter has 58 μm, and the depth of each hole in the metal net is 1 in the conventional type.
It is only 1/345th of the oversimplified version. Above two 1
Significant differences in the depth of the pores result in significant differences in single function as follows.

(1) Difference in pressure loss over 1j, and therefore also in new equipment overpressure 1) AReY's law states that the fluid flows through the cylinder wall (
The pressure drop when permeating through a porous layer (similar to the structure of a f3 bed) is directly proportional to the fluid's viscosity, permeation rate, and thickness of the porous layer, and permeability (a measure of the permeability of the porous layer) The value is related to the area of 4 pores distributed in the cross section of a unit porous layer.It has been clarified that the unit is inversely proportional to cd.
LILLE's law states that the pressure loss when a fluid flows through a tube, which can also be compared to one of the permeation pores distributed in the porous layer, is a function of the fluid's viscosity, flow rate, and capillary. It shows that it is directly proportional to the length of the tube and inversely proportional to the square of the radius of the tube.

Apart from the purpose of filtration to separate and remove mixed solids, both permeation and f-filtration are the same phenomenon in which fluid flows through pores, and the law regarding permeation is also valid as the law of c-filtration. Therefore, in the case of so-called pressure 1 over, such as 1 over due to 1 oversimplification, the pressure loss of C over is directly proportional to the viscosity of the fluid to be overtaken, the overspeed e, and the end of the r hole, and the rupture of the f hole. Il! [i is inversely proportional to the product, which is also interpreted as 5).

According to the above one-pass law, the pressure loss for one pass is in direct proportion to the length of the f-hole, so as mentioned above, the conventional f-recess with the same one-pass precision where the depth of each hole in the mesh is the same. The fact that it is only a few N towards the center of the 14 holes means that the pressure charged in one passage is only a few hundred -, and it is difficult to manufacture and operate it. The advantages of doing so are immeasurable.

This is the first time that a conventional four-pass cylinder has been used to solve the problem of one-jet cases where it is completely impossible to accurately pass through glue-like, beist-like, and local viscosity fluids. I can understand. For example, according to the catalog for the R-2310 type filter, when water at 15° C. is poured into the same filter, it is possible to pass 7.71 times per minute at an overpressure of 0.2 to 1. Now, using the same filter, replace water with naphthenic 1
Assuming No. 20 cylinder oil 'fP, 15℃
The viscosity of water is 0.011)'()' (JISE)
Since the viscosity of naphthenic No. 120 cylinder oil is 290P, according to the one-pass law of pressure filtration, the C overpressure required for filtration of cylinder oil becomes an ultra-high filtration pressure of R-2.
The pressure limit of the 510 type filter has been far exceeded, and filtration of 7 is completely impossible.

However, if this filtration is performed through mesh holes F,
As mentioned above, since the depth of one hole is only 1/345, the required C overpressure is 1 overpressure within the normal high pressure range, which is absolutely impossible for conventional filter cylinders. The mesh filtration cylinder also provides sufficient filtration.

(2) Difference in the difficulty of clogging recovery The second functional difference brought about by the difference in the depth of the r-hole is the difficulty of clogging recovery. Clogging of conventional filter cylinders occurs at various locations along their long depths. There is no reason to remove the slag that has accumulated in the deep part by washing from the front or back or by pushing, and backwashing is also ineffective as it loses its momentum during the long process. On the other hand, in the mesh f hole, all the slag as large solids exceeding the treetops ft remains and accumulates in the mesh space in front of the narrowest cross section, and the solids stagnate and accumulate in the mesh space after the narrowest cross section. There are no objects. Therefore, clogging F) occurs only in the mesh space in front of the narrowest cross section, and only in these 1
Since all of the slag solids have a size exceeding 1 degree of volume,
In most cases, a large part of it extends outside the mesh space.

Therefore, clogging can be very easily recovered by cleaning or brushing only the side where the fluid flows in.

The above is the same in the case of a mesh filtration tube made by reinforcing the mesh to withstand pressure, and the cross-sectional area f of the passage for filtered fluid provided in the pressure-resistant reinforcing mechanism is sufficiently larger than the narrowest cross-sectional area of the mesh space of the mesh. As long as the holes are kept wide, the location where clogging occurs and the method for clogging are no different from those using mesh f-holes alone. Therefore, by preparing a mechanism for gently rotating the mesh filtration cylinder while bringing its f exit into contact with the fixed brush, and a settling chamber for the removed slag and its extraction port,
It is now possible to recover from clogging while the filter tube is assembled inside the filter without taking it out of the filter, and by automating these operations, it is possible to repair the clogging of the filter tube, which was previously considered impossible. Automatic recovery from clogging is also fully possible with water or similar low viscosity fluids.

The gold mesh f-hole has the excellent advantage of having minimal pressure loss during filtration as mentioned above, and not requiring much overpressure for filtration, but when the filtration conditions become severe, , a high r overpressure corresponding to the conditions is required. However,
There is still no pressure-resistant mesh filter cylinder that is completely equipped with the required pressure resistance to meet this requirement. In fact, special measures are required to provide the required rigidity and pressure resistance without sacrificing the advantages of low pressure loss and easy recovery from clogging.

The present invention firstly discovered and confirmed the excellent characteristics of the gold maple mesh as one hole, and then selected it as an F-hole for a convenience bottle. The pressure-resistant mesh filtration cylinder according to the present invention has been developed based on both of the above conditions and special structural innovations to impart pressure resistance.
A rigid tube in which a cylindrical portion m is provided with a large number of through holes through which the passed fluid can flow, and a desired 1-periphery #i...disposed on the outer side of the rigid tube 1. Is it possible to make the straight path area between the 1-mesh tube and the outer circumferential direction of the rigid tube for guiding the 1-pass fluid to the N hole wider than the narrowest thl product of the mesh of the e-mesh tube? A reinforcing mesh tube having a diameter of It has a reinforced mesh tube that has the strength to withstand overpressure and one-overpressure vessel internal pressure.

Hereinafter, the pressure-resistant mesh 1-pass cylinder 夷#lshio 1j according to the present invention will be explained with reference to the drawings.゛The pressure-resistant mesh 1 is curved as shown in Fig. 2A to Fig. 2B.
It consists of three tubes: a mesh tube 1, a reinforced mesh tube 2, and a rigid tube 6. 1
The mesh tube 1 is made by molding a plain weave stainless W4# mesh into a cylindrical shape with an opening that meets the given 1-overaccuracy, and is disposed on the outside 1M+1 side of the rigid tube 6, which will be described later. At present, the accuracy of plain weave stainless steel mesh is limited to 400 mesh and 42 μm, and higher accuracy must be achieved by overlaying woven wire with plating. However, since there are some disadvantages in reducing the void ratio and making it easier to recover from clogging, it is fundamentally necessary to use a higher level of steelmaking technology, such as using woven wire with a metal wire that has better malleability than stainless steel. We must continue to improve our skills.

The rigid cylinder 6 is a cylinder made of a strong material to provide sufficient rigidity to withstand one overpressure and one overpressure inside the vessel. The target pressure resistance of the rigid cylinder is essentially C overpressure. The magnitude of C overpressure is determined by the pressure loss of f over, which is determined by the viscosity of the target fluid, 1 overload, 1 overspeed, etc., as well as the pressure loss of the pipes before and after the r overpressure, etc. However, this value does not necessarily end up as a steady value, but increases as one pass progresses and one pass cylinder begins to become clogged, and reaches a maximum when it is completely clogged. The pressure applied to the retraction section then becomes the internal pressure of the evaporator and continues to rise until it reaches the safety valve pressure of the evacuator. Therefore, the pressure that the C-recessed section must ultimately withstand is the safety valve pressure of this single-pass device, and the rigid cylinder must maintain rigidity to withstand this safety valve pressure.

A large number of through holes 4 are provided in the cylindrical wall of the rigid cylinder, penetrating both the inside and the outside, and serve as passages for discharging the evaporated fluid from the evaporator to the outside of the evaporator. The larger the diameter of the through-hole, the smaller the pressure loss and the elimination of concerns about an increase in overpressure when fluid flows through the tube, but if it is too large, the strength of the rigid cylinder itself will be reduced. Reinforcing nets, etc. disposed above it that impede retention and make it difficult to withstand pressure. It is desirable that the number of through-holes be as large as possible, and that the total cross-sectional area of the through-holes should be at least one permeable fluid (σ) that is larger than the cross-sectional area of the inlet pipe on the rigid cylinder wall surface. , 'The two parts of the 1-mesh tube and the rigid tube are enough to adjust the rigidity of 1 hole and 1 body of the pressure-resistant mesh 1-trans-tube; If you simply place the f-mesh tube directly on the rigid tube, the following will occur. This will cause serious problems.

(1) If the mesh is placed over the X hole and receives direct C overpressure without being supported by the other σ), the delicate and fragile woven wire material will not be able to withstand this. , there is a great risk of breakage and irreversible deformation.

(2) If the f mesh is placed directly on the rigid cylinder wall surface without any other intervention, the back side of the mesh hole 1 will be blocked by the wall surface, and the passage for draining the fluid that has passed through the mesh will be lost. , the only hole that can function as one hole is the one hole in the mesh portion located above the through hole, resulting in a severe decrease in the permeability efficiency of the cylinder as a whole.

The reinforcing mesh tube 2 is made by forming a plain weave stainless steel net with an appropriate mesh size into a cylindrical shape for the purpose of preventing the above-mentioned problems. It is placed between the two and plays the following roles: If it is necessary to use a plurality of reinforcing net tubes due to the rarity of circumstances 451, it is obvious that the thicker the reinforcing net tubes, the closer to the rigid part they are placed.

(If it is located above the through hole, it will first withstand the overpressure applied by itself with withstanding pressure, and eventually the safety valve pressure of one overpass, and at the same time support the e-mesh using the woven wire material.) , which can withstand the pressure of the safety valve of one overpass.

(1-a) The stainless steel preparation net is above the through hole, and D0
The conditions for withstanding the safety valve pressure seen are as follows.

Assume that a plain weave stainless steel net with a wire diameter d (m, a tensile strength σ~, and an opening of 1 cWL is placed over a through hole with a hole diameter XcWL and receives a safety valve pressure p'%.The net portion above the through hole x 117 woven wire rods are supported on the edges of the through-holes as a group of supporting holes at both ends, and the total pressure (7
) is subjected to a load equal to 2·π, and a total reaction force equal to the load (-y)t-ff-1) is generated on the cross section at each fulcrum.

On the other hand, the corresponding allowable stress is 2・(i) for each tension, assuming a safety factor is that takes into account a sufficient degree of safety.
2・E@−;, the whole group of both ends support Paris is 1
112 a (,)2 m @a.

becomes. Between this total allowable stress and total reaction force, ■・2・(i
) 2・E-1 ≧ (i) 2・E-p holds true, which indicates that the stainless steel mesh will break when it is placed over a through hole with a hole diameter of X (m) and receives a safety valve pressure of p ~. This is a condition for complete pressure resistance without undergoing any irreversible deformation.If both sides are assumed to be equal, x
l, that is, 4d2 σ It is.

Therefore, any stainless steel net whose value of . For example, if the safety factor is 8 and the safety valve pressure is 25~, the value of This applies to all meshes thicker than 48 mesh (mesh number smaller than 48).Therefore, even if a plain weave stainless steel mesh that is thicker than 48 mesh 7e falls over, it will fall over a through hole with a hole diameter of 1 CIrL. It can be said that this is a stainless steel JR net that can fully satisfy the first condition as a reinforcing net, being able to withstand the safety valve pressure of ~. (See Table 1) Table 1 Specifications of stainless steel net; □□ (1-Port) The conditions μ for the reinforcing net to support the 1 net and withstand the applied safety valve pressure are as follows.

The state in which the P net is on the reinforcement net and receives the safety valve pressure is similar to the situation in which the reinforcement net is on the through hole and receives the safety valve pressure, and the reinforcement net is supported by the edge of the through hole and withstands the safety valve pressure. As shown in FIG. It is supported by the edge of the space and can withstand the pressure of the safety valve.Therefore, one of the woven wire rods with a wire diameter DC1 ft, tensile strength σ~, and opening 2 is placed on the edge of the mesh space with side d1. The necessary condition for the net to withstand the safety valve pressure p~ is the total reaction force generated on the cross section of the negative threaded woven wire 1+[(d-1-i
)'p and the corresponding stress resistance value 2 - damage resistance 1.
2・(”)2-E-!!-(However, safety factor for S) 1)-)-
2 stops・2・(i)′・E・i≧(d−4−i)”・pL between L 2 S・
l-)-1 In other words, the following relationship holds true.

When both sides r are equal, the value of cl+i indicates the length of one side of the marginal reinforcing net space edge by which the f net is supported and can withstand the safety valve pressure of the p ma9. It is. That is, all stainless steel nets for reinforcing nets that satisfy this requirement have a wire diameter i) cfIL
, tensile strength σ, eye opening 1cFIL supporting rl14 p'%! It is a stainless steel mesh with openings that can withstand the pressure of the safety valve.

For example, one mesh is made of 40 Rometsushie plain weave stainless steel mesh and the f overload degree is 42μm, and the other is 0.0861cWL.
becomes. The first shift of d-1-i is this o, os3tcIIL
When looking for smaller stainless steel meshes among ready-made commercially available plain weave stainless steel meshes (see Table 1), all of the meshes (fine mesh Q than 32 mesh 7U) (mesh larger than mesh 5d32) fall under this category. . In other words, all nets finer than 62 mesh fully satisfy the second condition as reinforcing nets with appropriate openings that can support one mesh of 4υ0 mesh and 7 units and withstand the pressure of the safety valve of 25. This means that it is a stainless steel mesh.

As is clear from what has been described above, the reinforcing net is grease 1 with a filtration accuracy of 42 μm that can simultaneously satisfy the two conditions (1-a) and (1-mouth) regarding pressure resistance listed in 1.
If the same sound is applied to the applicable e-tube, the reinforcing net for the same 1-pass tube is 48 meters and 7 yu.
2.36.42.48 Each mesh must be made of stainless steel S4.

In order for the reinforcement net to be finally selected as the reinforcement net,
In addition to meeting these two conditions regarding withstand pressure, it also does not allow the passing of fluids that have already passed.

(2) A passage gap is formed between the woven wire metal and the wall surface of the rigid cylinder to guide the evaporated fluid to the through hole. The cross-sectional area of this gap must be sufficiently large so that there is no concern about clogging or increase in pressure loss when the evaporated fluid passes, and the evacuated fluid flowing into the mesh space must be sufficiently large. The line cross-section t* must be wide enough to allow the entire amount of water to be discharged out of the space without any hindrance. Therefore, the woven wire material of the reinforcing net must have a sufficient wire diameter to make this possible, and the reinforcing net is determined only after careful examination of this point and confirmation of its sufficiency. It turns out.

For example, when we examine one of the 32-mesh stainless steel meshes mentioned above for reinforcing meshes with 42μm precision grease for one pass and one pass, the wire diameter of the woven wire is 29υ.
μm corresponds to 6.9 times the opening of the C mesh, which is 42 μm, and the cross-sectional area of the gap formed between this thick wire and the rigid cylinder wall is approximately 81,500 μl112, and the narrowest cross-sectional area of the 1-hole mesh space. It is approximately 46 times larger than 1764μl, and there is almost no possibility that clogging will occur due to solids smaller than 1764μl112 that have passed through the e-hole and are mixed in the fluid that has passed through the passage. In addition, since the pressure loss per 1 overpressure is inversely proportional to the cross-sectional area of the C hole, its influence on the 1overpressure is small, and there is no special arrangement.

The above three cylinders constituting the pressure-resistant mesh filtration cylinder are adhesively molded at each joint without any gaps, and the three cylinders are adhered to each other without any gaps at their upper and lower ends, so that the fluid to be filtered is sequentially passed through the IP network. It must be configured to flow through the mesh, the mesh of the reinforcing mesh, and the through holes of the -1j strip.

By manufacturing the pressure-resistant mesh one-pass cylinder according to the present invention with the configuration described above, it can be attached to the floor and has the following excellent functional advantages not found in other single-sieve cylinders. reach.

(1) Reinforcement network formed by the discharge path tl of the 1-filtered fluid,
The gaps between the reinforcing net and the rigid cylinder wall, the through-holes, and their respective cross-sections are all significantly larger than the cross-sectional area of one hole in the mesh, and when the fluid passes through them, The pressure loss is extremely small compared to the original pressure loss per passage. Therefore, the excellent advantage of the mesh P hole, which is the small pressure loss in one pass, is the same as the advantage of one pass.

(2) The location where clogging occurs is limited to the space in the direction of mesh hole iII, and recovery from it is extremely easy.
The excellent length/fi of the 1st hole in 14th is also the same as this P
lil! This is an advantage.

(5) The heathered one-pass cylinder can withstand quite high pressures, and withstanding pressures of about 213'm filtration pressure and 251 degrees of safety valve pressure are not very difficult. Therefore, the filtration pressure of 20~ is not a very high filtration pressure as just 1 overpressure, but it is 1
This one overpressure is sufficient for most fluids that flow too much.
I'm sure it will be treated well.

From the above point of view, it can be concluded that all fluids suitable for e-transfer can be subjected to d4-transfer at one overpressure within the normal high pressure range of 25% or less, according to the first summary. Become. This can truly be said to be a summary of the advantages of pressure-resistant mesh filter cylinders.

Next, an example of application of a pressure-resistant mesh one-pass tube using heathering will be explained.

FIG. 6 is a cross-sectional view of a grease 1-pass tube assembled with a heather 1-pass tube. Reference numeral 11 denotes a filter cylinder, an operating handle 12 is attached to the upper part of the filter cylinder, and a concave portion 16 of the tapered pulp is formed below the filter cylinder. 14 is a through hole, 15 is a reinforced mesh tube, 1
6 is fitted with an f-mesh tube. Reference numeral 17 denotes a lid of the first passer, 18 a threaded portion for attaching an air vent peacock, and 19 a female screw portion for tightening with the first passer main body. Reference numeral 20 is the main body of the 1st overpass, 21 is a male screw part for tightening the 1st overpass lid with a screw, and 2
Reference numeral 2 denotes a Q+) ring mounting groove, and 26 a convex portion of the tapered valve corresponding to the concave portion 16. Reference numeral 24 indicates an inflow hole for the fluid to be passed through, and reference numeral 25 indicates an outflow hole for the fluid to be passed through.

When assembling the filter tube 11tf' into the filter 20 for 1 filtration, insert the f-recessed part 11 into the filter body 20 while following the handle 12, cover with the lid 17, and tighten the screws. do. As the screw tightening progresses, the first direction 11 is attached to the main body 2 via the handle 12.
00, the concave valve portion 16 is airtightly attached to the convex pulp portion 26. In addition, since the O ring in s22 is held down by the inner part of 17, the fluid inside the first passage vessel is completely sealed from the outside of the vessel.

As described above, when the f-recessed part is assembled into the first passer, the 4IItf It is only communicated by Therefore, all the passing fluids are
The fluid passes through the f-hole and flows into the inside of the one-pass cylinder 11, and during this period, the intended one-pass is performed, and the fluid that has undergone one pass is discharged from the outflow hole 25 to the outside of the vessel. If there is a device to take out the other part outside the vessel due to a sudden earthquake, close each pulp on the inlet side of the fluid to be passed through and the outflow side of the fluid that has passed through the vessel, and then open the peacock. By removing the lid 17, the e-recessed portion can be easily taken out of the device.

FIG. 4 is a cross-sectional view of a lubricating oil field one-pass tube in which a heather one-pass tube is assembled into the piping of a lubricating oil manufacturing apparatus. For installing Os/G
Grease 1 in FIG. 6 is applied except that 122 is provided on the outside of the first pass cylinder 11, and the O ring is held inward by the first pass cylinder 2U and sealed against the outside of the vessel. The structure is almost the same as the one-pass device.

[Brief explanation of the drawing]

Figure 1A is a plan view of the one-hole mesh model, Figure 1B is a cross-sectional side view taken along line X-X in Figure 1A, Figure 1C is a full cross-sectional view taken along Y-Y' line in Figure 1A, and Figure 2A is a side view of the cross-section taken along line Y-Y' in Figure 1A. Figure 2B is an enlarged view of part A in Figure 2A, and Figure 6 is a side view of the embodiment of the pressure-resistant mesh e-recessed part according to the present invention. Cross-sectional view of applied example FIG. 4 is a cross-sectional view of an applied example of the present invention to a lubricating oil single-pass container having a one-simplified pressure-resistant mesh. 1...1 mesh tube 2...reinforced mesh tube 6...rigid tube 4...through hole 11...1 passer 14...through hole 15...reinforced mesh tube 16... 1 mesh tube 20 ... 1 passing device body 24 ... 1 passing fluid inflow hole 25 ... 1 passing fluid outflow hole Agent Patent attorney Isochika Fujimoto 18■ + Ic Figure 5 Kasumi procedure amendment September 25, 1980 ['' Commissioner of the Patent Office 1, Indication of the case 1988 Patent 1 No. 210948 2, Title of the invention Pressure-resistant mesh filter tube 3, Relationship with the person making the amendment Patent applicant 4, Agent Address: 103 Telephone: O5-274-54
668, Contents of amendment As shown in Attachment 9, Attachment 1lII @ Kama Contents of amendment for which a request for examination of the application was submitted at the same time (li. The statement of the scope of claims is corrected as shown in Attachment. (2) Specification ``There is no necessity.'' in lines 11 to 12 of Book #I, page 3, is corrected to read, ``There is no necessity, and if it were, it would actually cause a functional defect as described later.'' (3) Same as No. 4 Correct “depth of space” in line 15 of the same page to “total depth of space”. (4) Correct “also” in line 20 of page 4 to “therefore”. (5) Page 10 of the same page. Line 18 to page 11, line 12 “
For......explain. '' is corrected to ``It consists of special structural devices such as the following.'' (6) In the same page 11, lines 17 to 18, "created,......arranged." It is corrected as follows. (7) "Steel manufacturing" in line 5 of page 12 is corrected to "net manufacturing." (8) “Reinforcement mesh tube 2” on page 14, lines 9 to 11.
is......made," is replaced with "reinforced mesh tube 2r.
It is made by forming a plain-woven stainless steel mesh thicker than the I and R meshes into a cylindrical shape, and is intended to prevent the above-mentioned problems from occurring.'' (9) In the first line of page 25 of the same document, next to ``Not even though'', add ``If the pressure loss of filtration is extremely small with the withdrawal of this pressure-resistant mesh f''. Scope of claims

Claims (1)

[Claims] The cylindrical body has numerous through holes through which the C-filtered fluid can flow, and has the rigidity to withstand overpressure and internal pressure, and is compatible with the desired C-overflow. A gold m-wire mesh having a mesh opening is molded into a cylindrical shape, and the fluid that has passed through the space between the mesh tube and the outer circumferential surface of the rigid tube is 111 A metal wire mesh having a wire diameter that can make the passage surface I* for leading to the through hole wider than the narrowest cross-sectional area of the mesh of the one mesh strip is formed into a cylindrical shape, and is connected to the rigid tube.
11 A reinforcing mesh tube disposed between No. 1 and No. 1 mesh tube, which has the strength to support the No. 1 mesh tube and is strong enough to withstand the No. 1 overpressure above the MiJ through hole and the No. 1 overpressure inside the vessel. 2y'
A pressure-resistant mesh filtration cylinder, characterized in that the flow is arranged so as to flow through the mesh of the J mesh cylinder, the mesh of the reinforced mesh cylinder, and the through hole of the 1rid rigid cylinder.