JP6307296B2 - Cleaning device - Google Patents

Description

  The present invention relates to a cleaning apparatus for cleaning an object to be cleaned such as tableware and medical instruments.

  Patent Document 1 discloses a cleaning device that cleans an object to be cleaned such as tableware. This cleaning device is provided with spray nozzles at the top and bottom of a cleaning tank with a water storage section at the bottom, and the cleaning water in the water storage section is sent to each spray nozzle through a conduit by a cleaning pump, and is cleaned from each spray nozzle. A cleaning device is disclosed in which cleaning water is sprayed onto an object. In this cleaning apparatus, the outlet end of the conduit is inserted into the cleaning tank through a through hole formed in each of the upper and lower walls of the cleaning tank, and a cleaning nozzle can be rotated on the outer peripheral surface of the outlet end of the conduit. A supporting holder is screwed and attached. In this cleaning device, an annular packing pressed between the holder and the upper or lower wall of the cleaning tank is interposed on the outer periphery of the outlet end of the conduit, and the cleaning water in the cleaning tank penetrates. It does not leak from the hole.

Utility Model Registration No. 2600919

  In the above-described cleaning apparatus disclosed in Patent Document 1, the through holes formed in the upper and lower walls of the cleaning tank are provided with a holder for mounting a cleaning nozzle on the outer periphery of the outlet end of the conduit and a cleaning tank facing the holder. It is liquid-tightly closed by an annular packing pressed between the upper wall and the lower wall. When performing maintenance such as replacement of parts of the cleaning device, a holder screwed to the outlet end portion of the conduit may be removed, and the holder may be screwed again to the outlet end portion of the conduit. At this time, if the holder to be screwed into the lead-out end portion of the conduit is too tight, the packing is crushed and damaged, or if the holder is too weak, the packing cannot be sufficiently sealed. An object of the present invention is to make sure that a packing provided by pressing between a holder screwed to a lead-out end portion of a conduit and a peripheral wall of a cleaning tank facing the holder can exhibit a sealing performance. And

  In order to solve the above problems, the present invention provides a cleaning tank having a water storage section for storing cleaning water at the bottom, a cleaning nozzle for ejecting cleaning water sent from the water storage section, and a cleaning tank provided in the cleaning tank. A cleaning pump for feeding water to the cleaning nozzle, a conduit having a leading end inserted into the cleaning tank through a through-hole formed in the peripheral wall of the cleaning tank, and a conduit for leading the cleaning water sent from the cleaning pump to the cleaning nozzle; In a cleaning apparatus provided with a holder that is screwed to a lead-out end portion and rotatably supports a cleaning nozzle, and a packing that is pressed between the holder and the peripheral wall of the cleaning tank facing the holder The present invention provides a cleaning apparatus characterized in that a cylindrical member for limiting the crushing cost of the packing is provided between the holder and the peripheral wall of the cleaning tank facing the holder.

In the cleaning apparatus configured as described above, a cylindrical member that limits the crushing allowance of the packing is provided between the holder and the peripheral wall of the cleaning tank facing the holder. When attached together, the packing was pressed and deformed with an appropriate crushing margin by the cylindrical member, and it was possible to prevent water leakage from the through hole.

  In the cleaning apparatus configured as described above, it is preferable to provide the cylindrical member just outside the packing, and in this case, it is possible to prevent the packing from spreading outside, and more reliably leak water from the through hole. I was able to prevent it.

  In the cleaning apparatus configured as described above, the cylindrical member preferably includes a sliding portion having a sliding surface extending between the holder and the packing and sliding with respect to the holder. In this case, when the holder is screwed and attached to the outlet end portion of the conduit, the holder can be prevented from being twisted by sliding the sliding portion of the cylindrical member.

  In the cleaning apparatus configured as described above, it is preferable that the cylindrical member has a flange portion that extends outward on the peripheral wall side of the cleaning tank, and in this case, an appropriate tightening to the outlet end portion of the conduit of the holder is performed. The amount of insertion was confirmed by the fact that the flange contacted the peripheral wall of the cleaning tank.

It is sectional drawing of the washing | cleaning apparatus by this invention. It is a perspective view which shows a washing | cleaning pump and a part of conduit | pipe. It is an expanded sectional view of the lower part of the washing tank of FIG.

  Hereinafter, a cleaning apparatus according to the present invention will be described with reference to the drawings. The cleaning device 10 according to the present invention is for cleaning objects to be cleaned such as tableware and medical instruments. As shown in FIG. 1, the cleaning device 10 includes a cleaning tank 20 that houses an object to be cleaned in a housing 11. A door 12 for opening and closing the inside of the cleaning tank 20 is provided on the front surface of the housing 11 so as to be openable and closable. The washing tub 20 accommodates an object to be washed and has a water storage part 21 for storing washing water at the bottom. The water reservoir 21 is provided with a heater 22 for heating the cleaning water and a temperature sensor 23 for detecting the temperature of the cleaning water. In addition, a water supply pipe, a hot water supply pipe, and a hot water supply device (all not shown) are connected to the cleaning tank 20, and water, hot water, or hot water is supplied from the water supply pipe, the hot water supply pipe, and the hot water supply apparatus to the cleaning tank 20. The washing water which becomes becomes to be supplied.

  Cleaning nozzles 24 and 25 for jetting the cleaning water sent from the water storage unit 21 to the object to be cleaned are rotatably provided at the lower and upper portions of the cleaning tank 20. A cleaning pump 26 for sending the cleaning water in the water storage unit 21 to the cleaning nozzles 24 and 25 is provided at the lower part of the housing 11. The suction port of the cleaning pump 26 is connected to the water storage unit 21 by a suction pipe 27, and the outlet of the cleaning pump 26 is connected to the cleaning nozzles 24 and 25 by a conduit 30.

  The conduit 30 is for guiding the cleaning water delivered from the cleaning pump 26 to the cleaning nozzles 24 and 25, and includes a first flat conduit 31 connected to the outlet of the cleaning pump 26. As shown in FIGS. 1 and 2, the first flat conduit 31 has a shape that is thin in the vertical direction and spreads in the horizontal direction, and extends in the front-rear direction below the cleaning tank 20. An introduction pipe portion 31 a protruding downward is formed on the lower surface of the front end side of the first flat conduit 31, and the introduction pipe portion 31 a is connected to the delivery port of the cleaning pump 26. On the upper surface on the front end side of the first flat conduit 31, a lead pipe portion (lead end portion) 31 b protruding upward is formed, and the lead pipe portion 31 b is a lower wall of the cleaning tank 20 as shown in FIG. 3. The cleaning tank 20 is inserted through a through hole 20a formed in the (peripheral wall). A connecting pipe portion 31c protruding upward is formed on the upper surface of the rear end side of the first flat conduit 31, and the lower end portion of the connecting conduit 32 is connected to the connecting pipe portion 31c. The connecting conduit 32 stands substantially vertically on the rear side of the cleaning tank 20, and a second flat conduit 33 is connected to the upper end of the connecting conduit 32. Similar to the first flat conduit 31, the second flat conduit 33 has a shape that is vertically thin and expands in the left-right direction, and extends in the front-rear direction above the cleaning tank 20. The second flat conduit 33 is formed with a connecting pipe portion 33a projecting downward on the lower surface on the rear end side, and the upper end portion of the connecting conduit 32 is connected to the connecting pipe portion 33a. The second flat conduit 33 is formed with a lead-out pipe part (lead-out end part) 33b projecting downward on the lower surface of the front end part, and the lead-out pipe part 33b is a through-hole formed in the upper wall (peripheral wall) of the cleaning tank 20. The cleaning tank 20 is inserted from 20b.

  The first flat conduit 31 is a resin molded product made of a poniphenylene sulfide material, and includes a shallow dish-shaped upper portion 31d, a lower portion 31e, and an outer peripheral portion 31f provided on these outer peripheral portions. Each of the upper part 31d and the lower part 31e of the first flat conduit 31 is manufactured as a primary molded product by injecting a resin material from a cylinder heated to 330 to 340 ° C into a low-temperature mold of 60 to 65 ° C. The Each primary molded product composed of the upper portion 31d and the lower portion 31e is suppressed from being crystallized by a mold that is intentionally cooled. In a state where the primary molded products of the upper part 31d and the lower part 31e are assembled vertically, a resin material is injected from a cylinder heated to 330 to 340 ° C. into a low temperature mold of 60 to 65 ° C. An outer peripheral part 31f is formed on the outer peripheral part of the part 31d and the lower part 31e to produce a secondary molded product. By annealing the secondary molded product at 180 ° C. for 1 hour, the residual stress of the secondary molded product is reduced, and the resin material is crystallized to improve the adhesive strength of the portions 31d to 31f. The second flat conduit 33 is also performed in the same manner.

  Threaded portions are formed on the outer periphery of the outlet tube portion 31b of the first flat conduit 31 and the outlet tube portion 33b of the second flat conduit 33, and the cleaning nozzles 24 and 25 are rotated on the outlet tube portions 31b and 33b. A holder 41 that can be supported is attached by screwing. As shown in FIG. 3 (FIG. 3 shows the lower part of the cleaning tank, and the upper part of the cleaning tank is omitted because it is substantially the same as the lower part turned upside down). The holder 41 has a substantially cylindrical shape with a closed end having a water passage so that washing water delivered from the conduit 30 can be passed through the washing nozzles 24, 25. The inner peripheral surface is formed with a threaded portion for screwing into each of the outlet tube portions 31b and 33b. Further, a water supply port 41 a for sending cleaning water to the cleaning nozzles 24 and 25 is formed on the peripheral surface on the tip side of the holder 41. The base end portion of the holder 41 has a larger diameter than other portions, and an annular recess 41 b is formed on the base end surface of the holder 41.

  A packing 42 and a cylindrical member 43 are interposed on the outer periphery of the outlet tube portion 31b of the first flat conduit 31 and the outlet tube portion 33b of the second flat conduit 33. As shown in FIG. 3, the packing 42 is formed by annularly molding a rubber material that can be elastically deformed. The packing 42 is provided by being pressed between the holder 41 and the lower wall or the upper wall of the cleaning tank 20, and has a function of preventing water leakage from the through holes 20 a and 20 b on the upper wall or the lower wall of the cleaning tank 20. Have. The packing 42 includes an annular flat plate portion 42a disposed on the lower side of the lower wall or the upper side of the upper wall around the through holes 20a and 20b of the cleaning tank 20, and the lower wall of the holder 41 and the cleaning tank 20 or An annular seal portion 42b fitted to the outer periphery of each of the outlet pipe portions 31b and 33b is provided between the upper wall and the flat plate portion 42a and the seal portion 42b are integrally formed.

  As shown in FIG. 3, the cylindrical member 43 limits the crushing allowance of the packing 42, and the annular recess 41b of the holder 41 and the lower wall or upper wall (peripheral wall) of the cleaning tank 20 facing the annular recess 41b. It is provided in between. The cylindrical member 43 includes a cylindrical cylindrical portion 43 a that covers the outside of the seal portion 42 b of the packing 42. The cylinder portion 43a is slightly lower than the height of the seal portion 42b of the packing 42, and the crushing margin of the seal portion 42b of the packing 42 is set so as not to crush the seal portion 42b of the packing 42 from the height of the cylinder portion 43a. Restricted. Since the cylindrical portion 43a is provided outside the seal portion 42b of the packing 42, it has a function of preventing the seal portion 42b from spreading outward and a function of preventing the seal portion 42b from being exposed to high-temperature cleaning water. doing.

  The cylindrical member 43 includes a sliding portion 43 b that extends between the holder 41 and the seal portion 42 b of the packing 42 and has a sliding surface that slides with the holder 41. The sliding part 43b extends from the upper end (when provided at the lower part of the cleaning tank 20) or the lower end (when provided at the upper part of the cleaning tank 20) to the center side, and the holder 41 is connected to each outlet pipe part of the conduit 30. It has a function of preventing the seal portion 42b of the packing 42 from being twisted by the holder 41 when screwed into the holes 31b and 33b.

  The cylindrical member 43 includes a flange portion 43c that extends outward on the lower wall or upper wall side of the cleaning tank 20. The flange portion 43c of the cylindrical member 43 extends outward from the lower end of the cylindrical portion 43a in the lower part of the cleaning tank 20, and extends outward from the upper end of the cylindrical part 43a in the upper part of the cleaning tank 20. The flange portion 43 c is in close contact with the lower or upper wall of the cleaning tank 20 and has a function of preventing the holder 41 from loosening from the outlet pipe portions 31 b and 33 b of the conduit 30.

  In the cleaning apparatus 10 configured as described above, when an object to be cleaned is stored in the cleaning tank 20 and a cleaning program is executed, a water supply pipe, a hot water supply pipe, or a hot water supply apparatus (all of which are stored in the water storage unit 21 of the cleaning tank 20). Washing water is supplied from (not shown), the washing water in the water storage section 21 is guided to the washing nozzles 24 and 25 by the conduit 30 by the operation of the washing pump 26, and the object to be washed is jetted from the washing nozzles 24 and 25. The cleaning water that has been cleaned with the cleaning water and sprayed onto the object to be cleaned returns to the water storage unit 21 again.

  In the cleaning apparatus 10 configured as described above, each part may be removed and replaced as appropriate during maintenance. The cleaning device 10 includes a seal portion of a packing 42 between a holder 41 for attaching the cleaning nozzles 24 and 25 to the outlet pipe portions 31b and 33b of the conduit 30 and a lower wall or an upper wall of the cleaning tank 20 facing the holder 41. A cylindrical member 43 for limiting the crushing cost of 42b is provided. When the holder 41 is screwed and attached to the lead-out pipe portions 31b and 33b again, both ends in the axial direction of the cylindrical member 43 are connected to the annular recess 41b on the base end surface of the holder 41 and the lower or upper wall of the cleaning tank If the holder 41 is tightened and screwed to the lead-out pipe portions 31b and 33b to the position where both of them are in contact with each other, the seal portion 42b of the packing 42 is elastically deformed with an appropriate crushing margin, and the cleaning tank 20 It was possible to prevent water leakage from the through holes 20a and 20b formed in the lower wall or the upper wall.

  Further, when the holder 41 is screwed into the outlet tube portions 31 b and 33 b of the conduit 30, the seal portion 42 b of the packing 42 is outside between the base end surface of the holder 41 and the lower wall or the upper wall of the cleaning tank 20. It is crushed to spread. However, since the cylindrical portion 43a of the cylindrical member 43 is provided just outside the seal portion 42b of the packing 42, the seal portion 42b of the packing 42 does not spread outward by the cylindrical portion 43a, and the seal portion 42b is led out to each The tube portions 31b and 33b are in close contact with each other and can be sufficiently sealed between them, and the sealing performance of the packing 42 can be improved. Further, since the cylindrical portion 43a of the cylindrical member 43 is provided immediately outside the seal portion 42b of the packing 42, the seal portion 42b is not exposed to high temperature or cleaning water containing detergent, and the seal portion 42b Deterioration could be prevented.

  The cylindrical member 43 includes an annular sliding portion 43 b having a sliding surface that extends between the holder 41 and the seal portion 42 b of the packing 42 and slides with the holder 41. Thereby, when the holder 41 is screwed and attached to the outlet pipe portions 31 b and 33 b of the conduit 30, the packing 42 is twisted by the holder 41 sliding on the sliding portion 43 b of the cylindrical member 43. Was able to prevent. Moreover, since the cylindrical member 43 is provided with the flange part 43c extended outside on the lower wall or upper wall side of the cleaning tank 20, an appropriate tightening amount for the outlet pipe parts 31b and 33b of the conduit 30 of the holder 41 can be obtained. The fact that the flange portion 43c abuts on the lower wall or the upper wall of the cleaning tank 20 can be confirmed. Further, the flange 41c of the cylindrical member 43 is brought into close contact with the lower wall or the upper wall of the cleaning tank 20, so that the holder 41 is less likely to loosen from the outlet pipe portions 31b and 33b of the conduit 30.

  In the above embodiment, the cleaning nozzles 24 and 25 are provided in the lower part and the upper part of the cleaning tank 20, but the present invention is not limited to this, and the cleaning nozzle is provided in the lower part or the upper part of the cleaning tank 20. It may be. In this case, the packing 42 and the cylindrical member 43 may be provided between the holder 41 and the upper wall or the lower wall of the cleaning tank 20.

  In the above embodiment, the cylindrical portion 43a of the cylindrical member 43 has a cylindrical shape. However, the present invention is not limited to this, and the cylindrical portion 43a may have a regular polygonal cylindrical shape, for example. Similar effects can be obtained even in the case of the above.

  In the above embodiment, the cylindrical member 43 is formed by integrally forming the cylindrical portion 43a, the sliding portion 43b, and the flange portion 43c. The present invention is not limited to this, and the cylindrical member 43 includes a cylindrical portion 43a, a cylindrical portion 43a and a sliding portion 43b integrally formed, or a cylindrical portion 43a and a flange portion 43c. May be formed integrally. In addition, when the cylindrical member 43 does not include the sliding portion 43b, twisting of the sealing portion 42b of the packing 42 can be prevented by separately inserting a washer member between the holder 41 and the sealing portion 42b of the packing 42. Can do.

  DESCRIPTION OF SYMBOLS 10 ... Cleaning apparatus, 20 ... Cleaning tank, 20a, 20b ... Through-hole, 21 ... Water storage part, 24, 25 ... Cleaning nozzle, 26 ... Cleaning pump, 30 ... Conduit, 31b, 33b ... Outlet end part (outlet pipe part) , 41 ... Holder, 42 ... Packing, 43 ... Cylindrical member, 43b ... Sliding part, 43c ... Flange part.

Claims (4)

A washing tank having a water storage section for storing washing water at the bottom;
A cleaning nozzle provided in the cleaning tank and ejecting cleaning water sent from the water reservoir;
A cleaning pump for sending the cleaning water of the water reservoir to the cleaning nozzle;
A conduit for leading the cleaning water sent from the cleaning pump to the cleaning nozzle, the leading end of which is inserted into the cleaning tank through a through-hole formed in the peripheral wall of the cleaning tank;
A holder that is screwed onto the outlet end of the conduit and rotatably supports the cleaning nozzle;
In a cleaning apparatus comprising a packing provided by pressing between the holder and the peripheral wall of the cleaning tank facing the holder,
A cleaning apparatus comprising a cylindrical member for limiting a crushing cost of the packing between the holder and a peripheral wall of the cleaning tank facing the holder. The cleaning device according to claim 1,
A cleaning apparatus, wherein the cylindrical member is provided immediately outside the packing. The cleaning apparatus according to claim 1 or 2,
The said cylindrical member was equipped with the sliding part which extended between the said holder and the said packing, and had the sliding surface which slides with respect to the said holder, The cleaning apparatus characterized by the above-mentioned. In the cleaning device according to any one of claims 1 to 3,
The said cylindrical member was equipped with the flange part extended on the outer side in the surrounding wall side of the said washing tank, The washing | cleaning apparatus characterized by the above-mentioned.

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