JP6542561B2 - Cleaning apparatus and cleaning method - Google Patents

Description

  The present invention relates to a cleaning apparatus and a cleaning method for cleaning a lining member such as a reaction tank and piping (straight pipe) used in, for example, a manufacturing process of a drug or the like.

  Chemical resistant sheet (for example, made of PTFE) suitable as a lining material for reaction towers, reaction vessels, reservoirs, transport and storage tanks, containers for liquids, containers for chemicals and electronic parts, and piping parts In the lining members lined with metal and plants such as the chemical industry and the food industry, a lining glass layer is coated on the inner wall surface of the reactor, storage tank, and piping parts to prevent corrosion of the inner wall surface. Lining members, etc.

  As a cleaning method of these lining members, although there was a method of cleaning the inside of the tank with a shower nozzle or a shower ball, there was no method of cleaning the nozzle part and piping parts provided in the tank.

  The nozzle unit is installed for use as, for example, inserting a stirring rod, inserting a chemical solution supply pipe, or a viewing window or an illumination window.

  There is a need for an apparatus that can be easily adapted to existing lining members and can clean the inside of the nozzle, the stirring rod inserted into the nozzle, the insertion pipe, the inside of the piping component, and the like.

JP-A-8-89919 Japanese Patent Application Laid-Open No. 63-77561

Therefore, in view of the above circumstances, the present invention is a cleaning device and cleaning capable of cleaning the inside of a nozzle portion (including a viewing window and an illumination window) , a stirring rod inserted into the nozzle portion, an insertion tube, and piping components. It is intended to provide a way.

According to a first aspect of the present invention, there is provided a ring-shaped cleaning device body, a cleaning solution supply port provided in the cleaning device body, for supplying a cleaning solution to the inside of the cleaning device body, and a cleaning solution supply port provided in the cleaning device body And a cleaning solution injection port for injecting the cleaning solution supplied from the inner side in the radial direction of the cleaning apparatus main body, the cleaning apparatus being attached by being pinched by the flange from both sides in the axial direction And a cleaning liquid supply member for guiding a cleaning liquid supplied from the cleaning liquid supply port to the cleaning liquid jet port, the flange joint end surface being inclined toward the axial center of the cleaning liquid supply member. It has a first inclined surface, and a second inclined surface connected to the first inclined surface and inclined inward in the radial direction of the cleaning liquid supply member .

A reinforcing member is combined with the cleaning solution supply member.

  The cleaning solution supply member is made of fluorine resin, and the reinforcing member is made of metal.

  The cleaning solution injection port is inclined upward and radially inward from the radially outer side of the cleaning device main body.

  The cleaning device is a tank nozzle cleaning device which is installed at a nozzle portion of a tank and cleans the inside of the nozzle portion.

  The second invention is a cleaning method for cleaning the inside of the nozzle portion by installing the cleaning device of the present invention in the nozzle portion and injecting the cleaning liquid from the cleaning liquid injection port.

  According to the first aspect of the present invention, the cleaning device main body is installed at the nozzle portion of the tank, and the cleaning liquid supplied from the cleaning liquid supply port is sprayed radially inward from the cleaning liquid injection port. Thus, the cleaning liquid is poured into the inside of the nozzle portion, and the nozzle portion is cleaned.

  Further, since the reinforcing member is assembled to the cleaning liquid supply member, the reinforcing member opposes the compressive load even when a compressive load acts on the cleaning device body when the cleaning device is installed at the nozzle portion of the tank. This increases the strength of the cleaning device body.

  In addition, since the cleaning liquid supply member is made of fluorocarbon resin, it has chemical resistance and can maintain high purity of the cleaning liquid. Since the reinforcing member is made of metal, the strength of the reinforcing member is increased.

  In addition, the cleaning liquid is jetted in the direction opposed to the gravity because the cleaning liquid injection port is inclined upward and radially inward from the radial outer side of the cleaning device body. As a result, the flying distance of the cleaning liquid is increased and the diffusivity is enhanced. As a result, the cleaning solution is poured into a wide area inside the nozzle portion, and the cleaning effect is enhanced.

  According to the second aspect of the present invention, by installing the cleaning device of the present invention at the nozzle portion and injecting the cleaning liquid from the cleaning liquid injection port, the cleaning of the inside of the nozzle portion becomes easy.

  According to the present invention, it is possible to clean not only the inside of the tank nozzle but also the inside of the lining pipe (straight pipe).

It is a side view of the washing device of a 1st embodiment of the present invention. FIG. It is sectional drawing cut | disconnected between AA of FIG. It is sectional drawing cut | disconnected between BB of FIG. It is a figure when installing the washing | cleaning apparatus of 1st Embodiment of this invention in a tank, and wash | cleaning a nozzle part. It is a figure when installing the washing | cleaning apparatus of 1st Embodiment of this invention in a tank, and washing | cleaning insertion members, such as piping inserted in the nozzle part. It is a longitudinal cross-sectional view of the state which connected the flange to the washing | cleaning-liquid supply port of the washing | cleaning apparatus of this invention.

  Next, a cleaning apparatus and a cleaning method according to an embodiment of the present invention will be described. In addition, although the washing | cleaning apparatus and washing | cleaning method of this invention are used for washing | cleaning of lining members, such as a tank nozzle or piping, for example, a use is not specifically limited. However, in the following embodiments, the configuration of the cleaning device for the tank nozzle will be described as an example.

  As shown in FIGS. 4 and 5, the cleaning device 10 is installed at the nozzle portion 32 of the tank 30 to clean the inside of the nozzle portion 32.

  As the cleaning solution, water, an organic solvent such as a volatile liquid, or a mixture thereof is used.

  As shown in FIGS. 1 to 3, the cleaning device 10 mainly includes a ring-shaped cleaning device main body 12 installed at the nozzle portion 32 of the tank 30, and the cleaning device main body 12. A cleaning solution supply port 14 for supplying a cleaning solution, and a cleaning solution injection port 16 provided in the cleaning apparatus body 12 for injecting the cleaning solution supplied from the cleaning solution supply port 14 radially inward of the cleaning apparatus body 12; There is.

  The cleaning device body 12 is formed in a ring shape as a whole, and has a cleaning liquid supply member 18 for guiding the cleaning liquid supplied from the cleaning liquid supply port 14 to the cleaning liquid jet port 16 and a reinforcing member 20 combined with the cleaning liquid supply member 18. doing.

  The cleaning solution supply member 18 is formed in a ring shape as a whole, and is preferably made of, for example, a fluorine resin.

  Here, as the fluorine resin, for example, a fluorine resin which is excellent in chemical resistance and heat resistance is preferable. For example, polytetrafluoroethylene (PTFE), tetrafluoroethylene / hexafluoropropylene copolymer (FEP) And tetrafluoroethylene / perfluoro (alkyl vinyl ether) copolymer (PFA), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVA), ethylene / tetrafluoroethylene copolymer (ETFE) and the like.

  In addition, PTFE is a homopolymer of tetrafluoroethylene, or a modified PTFE containing a modifier such as a trace amount of hexafluoropropylene, fluoroalkoxytrifluoroethylene, fluoroalkylethylene, chlorotrifluoroethylene, etc. in a minor amount of less than 1% by weight. It is also good.

  In particular, PTFE is preferable because it is excellent in low permeability and stress crack resistance of a chemical solution, and modified PTFE is preferable because it is excellent in creep resistance and has high welding strength at the time of molding.

  The cleaning solution supply member 18 is particularly preferably an antistatic fluororesin comprising a fluororesin and a conductive filler. Preferred examples of materials, compounding amounts, and production methods are known techniques, and are based on JP-A 2008-4762 and the like. When the cleaning liquid supply member 18 is made of antistatic fluorine resin, the static electricity generated by the friction when the cleaning liquid flows in the inside of the cleaning device such as the cleaning liquid flow channel 22 and the inside of the lining member such as the tank nozzle 32 is charged. In particular, when the cleaning liquid is a volatile fluid, it is possible to prevent the ignition and explosion of the cleaning liquid due to the charging of the cleaning liquid injection port 16.

  In the cleaning liquid supply member 18, a cleaning liquid flow passage 22 for communicating the cleaning liquid supply port 14 and the cleaning liquid injection port 16 is formed. The cleaning solution flow passage 22 is formed in a ring shape, and the cleaning solution flows. The cleaning liquid supply member 18 and the cleaning liquid flow path 22 are formed by cutting resin, injection molding, or the like.

  The first inclined surface 24 inclined toward the axial center of the cleaning liquid supply member 18 and the first inclined surface 24 are formed on the flange joining end face of the cleaning liquid supply member 18 in the radial direction of the cleaning liquid supply member 18. A second inclined surface 26 inclined inward is formed.

  Since the first inclined surface 24 is formed, the deformation is absorbed by the first inclined surface 24 when the cleaning liquid supply member 18 receives a compressive load and is compressed and deformed. Therefore, deformation or crushing of the cleaning solution injection port 16 due to the compressive load is suppressed.

  The formation of the second inclined surface 26 makes the cleaning liquid injection port 16 face the upper side (upstream side in the gravity acting direction) by forming the cleaning liquid injection port 16 on the second inclined surface 26. Thus, the cleaning liquid is sprayed upward.

  The reinforcing member 20 is made of, for example, metal. The reinforcing member 20 is composed of, for example, a split ring divided into two. After the split rings are attached to the cleaning solution supply member 18, the split rings are fixed to each other by fasteners 28 such as bolts.

  The cleaning liquid supply port 14 is constituted by, for example, an opening connection portion, and is connected to an external cleaning liquid supply facility (not shown). The cleaning liquid is supplied to the cleaning liquid supply port 14 from an external cleaning liquid supply facility. The cleaning solution supply port 14 is in communication with the cleaning solution flow passage 22.

  The cleaning liquid jet port 16 is an opening from which the cleaning liquid supplied to the cleaning liquid supply port 14 is sprayed radially inward of the cleaning device main body 12. The cleaning solution injection port 16 is in communication with the cleaning solution flow passage 22.

  Here, the cleaning liquid jet port 16 is formed to be inclined upward and radially inward from the radial outer side of the cleaning device body 12. That is, one end of the cleaning liquid jet port 16 is connected to the cleaning liquid flow passage 22, the other end is connected to the second inclined surface 26, and the whole is formed to be inclined upward.

  One or more cleaning liquid jet ports 16 are formed. In particular, by forming a plurality of cleaning solution injection ports 16 at regular intervals on the circumference of the ring-shaped cleaning device body 12, the cleaning solution is injected from the plurality of ports in the outer peripheral direction of the cleaning device body 12, respectively. The effect is higher. Further, the shape and size of the cleaning solution injection port 16 are not particularly limited, and can be designed according to, for example, the shape of the cleaning apparatus main body 12 and the cleaning target range, and the required cleaning solution flow rate and injection pressure. .

  Next, the operation and effects of the cleaning device and the cleaning method according to the embodiment of the present invention will be described.

  The cleaning device 10 is, for example, fastened and fixed to the flange 34 of the nozzle portion 32 of the tank 30, as shown in FIGS. 4 and 5. Since the cleaning device 10 is formed in a ring shape as a whole, it can be easily attached to the nozzle portion 32.

  At this time, a compressive load from the flange acts on the cleaning device 10, but the reinforcing member 20 can resist the compressive load. For example, even if the chemical solution supply pipe or the like attached to the nozzle portion 32 is heavy and a large load is applied to the cleaning apparatus main body 12, deformation due to creep of the resin of the cleaning solution supply member 18 is suppressed and stable for a long time Enable washout spouts.

  The cleaning liquid (water or cleaning chemical solution) supplied from the cleaning liquid supply port 14 of the cleaning apparatus 10 is injected from the cleaning liquid injection port 16 through the cleaning liquid flow passage 22. Thereby, an insertion member 36 such as a chemical solution supply pipe, a stirring rod, and a baffle plate which is attached to the inside of the nozzle portion 32 or the observation window attached to the inner surface of the nozzle portion 32 or the nozzle portion 32 and inserted into the tank. It is poured and washed.

Here, since the cleaning liquid jet port 16 is inclined upward and radially inward from the radial outer side of the cleaning device body 12, the cleaning liquid is lifted in the direction against the gravity. As a result, the flying distance of the cleaning liquid is increased, and it becomes possible to spray the cleaning liquid from the installation location of the cleaning apparatus body 12 to a higher position, and the diffusivity becomes high. As a result, the cleaning liquid is poured inside a wide area of the nozzle portion 32, the cleaning effect is rather high.

  According to the present invention, it is possible to clean not only the inside of the tank nozzle but also the inside of the lining pipe (straight pipe).

  The position of the nozzle portion is not limited to the outside position of the upper portion of the tank shown in FIGS. 4 and 5 and may be disposed at the center position of the upper portion of the tank, the side surface of the tank, or the like.

  Here, as an example at the time of use of the cleaning apparatus 10, as shown in FIG. 6, the flange 38 may be connected to the cleaning liquid supply port 14 of the cleaning apparatus 10 and used.

DESCRIPTION OF SYMBOLS 10 cleaning apparatus 12 cleaning apparatus main body 14 cleaning liquid supply port 16 cleaning liquid injection port 18 cleaning liquid supply member 20 reinforcing member 22 cleaning liquid flow path 24 first inclined surface 26 second inclined surface 28 fixing tool 30 tank 32 nozzle part 34 flange 36 inserted member 38 Flange

Claims (6)

A ring-shaped cleaning device body,
A cleaning liquid supply port provided in the cleaning apparatus main body and supplying a cleaning liquid to the inside of the cleaning apparatus main body;
A cleaning solution injection port provided in the cleaning apparatus main body and configured to inject the cleaning solution supplied from the cleaning solution supply port radially inward of the cleaning apparatus main body;
A cleaning device having a pair of flanges mounted on both sides of the flange in the axial direction,
The cleaning device body is
And a cleaning liquid supply member for guiding a cleaning liquid supplied from the cleaning liquid supply port to the cleaning liquid jet port, comprising a flange joint end face;
The flange connection end face is
A first inclined surface inclined toward the axial center side of the cleaning liquid supply member;
A second inclined surface connected to the first inclined surface and inclined inward in the radial direction of the cleaning liquid supply member;
A cleaning device characterized by having: The cleaning device according to claim 1, wherein a reinforcing member is combined with the cleaning solution supply member . The cleaning solution supply member is made of fluorocarbon resin,
The cleaning device according to claim 2, wherein the reinforcing member is made of metal.   The cleaning liquid according to any one of claims 1 to 3, wherein the cleaning liquid injection port is inclined upward and radially inward from the radial outer side of the cleaning apparatus main body.   The said washing | cleaning apparatus is installed in the nozzle part of a tank, and wash | cleans the inside of the said nozzle part, The washing | cleaning apparatus of any one of the Claims 1 thru | or 4 characterized by the above-mentioned.   A cleaning method comprising: installing the cleaning device according to any one of claims 1 to 4 at a nozzle portion and injecting a cleaning solution from a cleaning solution injection port to clean the inside of the nozzle portion.

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