JP2018199091A - Washer - Google Patents

Abstract

To provide a washer which can prevent air intrusion into a pump and can be operated with a small amount of liquid by reducing the liquid accumulating on a strainer during operation of the pump.SOLUTION: A washer includes: a washing tank 3 in which a washed object is stored; a washing nozzle 4 which jets liquid to the washed object in the washing tank 3; a liquid storage part 5 which is connected to a lower part in the washing tank 3; and a pump 14 which supplies the liquid in the liquid storage part 5 to the washing nozzle 4. A strainer 2 is provided at an upper part of the liquid storage part 5. In a lower part of the liquid storage part 5, a suction port 30 leading to the pump 14 is provided at a position located closer to one side than a center part. As the strainer 2, a first strainer 2A is provided at one side while a second strainer 2B is provided at the other side. A sum of a cross sectional area of an opening of the second strainer 2B is larger than a sum of a cross sectional area of an opening of the first strainer 2A when comparing them per unit area.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cleaning device that performs cleaning by jetting a liquid onto an object to be cleaned.

  Conventionally, as disclosed in Patent Document 1 below, an injection type cleaning device is known. If it demonstrates based on FIG. 1 of the said literature, a washing | cleaning machine will have a washing tank (2) in which a to-be-cleaned object is accommodated, a washing nozzle (3) which injects a liquid to the to-be-washed object in this washing tank, and a washing tank The liquid storage part (4) connected to the lower part of the inside, the water supply means (5) to the liquid storage part, the drainage means (6) from the liquid storage part, and the liquid in the liquid storage part are circulated and supplied to the cleaning nozzle. A circulating means (8) for controlling, and a control means for controlling each means.

JP 2017-23985 (Claim 1, FIG. 1)

  In this type of washer, the main cause of unstable operation is air leakage at the circulation pump of the circulation means. That is, when the circulation pump is operated, the liquid in the liquid storage part is ejected from the cleaning nozzle and returned to the liquid storage part, but the circulation pump sucks in bubbles generated when water falls from the cleaning nozzle to the liquid storage part. Air smears. In order to prevent air leakage, it is necessary to prevent bubbles from reaching the suction port of the circulation pump.

  As one method for preventing air leakage, for example, it is conceivable to provide a strainer at the upper part of the liquid storage part and suppress bubbles by pressure loss. However, if the strainer is simply provided, the flow rate at the time of passing through the strainer decreases due to the pressure loss of the strainer, so that the liquid stays in the upper part of the strainer. That is, even if the liquid level in the liquid storage part is below the strainer, the liquid remains on the upper part of the strainer. In this case, when the circulation pump is operated, the liquid in the liquid storage part is easily depleted, so that it is necessary to store the liquid in the liquid storage part as much as that. In order to prevent such inconvenience, if the strainer's eyes are roughened, the bubbles cannot be effectively removed, and there is a possibility that air bleeding cannot be prevented.

  Therefore, the problem to be solved by the present invention is to provide a washer that can prevent air leakage of the pump with a simple configuration. It is another object of the present invention to provide a washer that can be operated with a small amount of liquid by reducing the accumulation of liquid on the strainer during operation of the pump.

  The present invention has been made to solve the above problems, and the invention according to claim 1 is a cleaning tank in which an object to be cleaned is accommodated, and a cleaning in which a liquid is jetted onto the object to be cleaned in the cleaning tank. A nozzle, a liquid storage unit connected to the lower part in the cleaning tank, and a pump for supplying the liquid in the liquid storage part to the cleaning nozzle, on the lower part of the cleaning tank or the upper part of the liquid storage part, A strainer is provided, and a suction port to the pump is provided at a position closer to one side than a central part at a lower part of the liquid storage part, and a first strainer is provided on the one side as the strainer. On the other hand, when the second strainer is provided on the other side and compared per unit area, the total cross-sectional area of the opening of the second strainer is larger than the total cross-sectional area of the opening of the first strainer. It is a washing machine featuring

  According to the first aspect of the present invention, by providing a strainer at the lower part of the cleaning tank or the upper part of the liquid storage part, it is possible to suppress the arrival of bubbles to the pump and to prevent the air from flowing into the pump. it can. At that time, a first strainer is arranged on the side of the suction port to the pump, which is relatively fine (that is, the total sectional area of the openings per unit area is small) to suppress the arrival of bubbles to the pump. be able to. On the other hand, on the opposite side of the suction port to the pump, a second strainer with a relatively coarse mesh (that is, a large total cross-sectional area of the opening per unit area) is arranged so that liquid stays on the strainer. Can be reduced. Thereby, a washing | cleaning machine can be drive | operated in the state which suppressed the storage amount of the liquid. Since the liquid after passing through the second strainer has a longer distance to the suction port of the pump than the liquid after passing through the first strainer, bubbles disappear during that time.

  The invention according to claim 2 is characterized in that each strainer is formed in a net shape, and an opening ratio of the second strainer is larger than an opening ratio of the first strainer. It is a washer.

  According to the second aspect of the present invention, by providing a net-like strainer at the lower part of the washing tank or the upper part of the liquid storage part, the arrival of bubbles to the pump is suppressed, and the pumping of the pump air is prevented. be able to. At that time, a first strainer having a small opening ratio can be arranged on the suction port side of the pump to suppress the arrival of bubbles to the pump. On the other hand, a second strainer having a large opening ratio can be arranged on the side opposite to the suction port to the pump, so that the liquid can be prevented from staying on the strainer. Thereby, a washing | cleaning machine can be drive | operated in the state which restrained the storage amount of the liquid. Since the liquid after passing through the second strainer has a longer distance to the suction port of the pump than the liquid after passing through the first strainer, bubbles disappear during that time.

  Furthermore, in the invention according to claim 3, the suction port to the pump is provided on the lower surface of one side in the longitudinal direction of the liquid storage part, and the longitudinal direction is provided at the lower part of the cleaning tank or the upper part of the liquid storage part. The washing machine according to claim 1 or 2, wherein the first strainer is provided on one side, and the second strainer is provided on the other in the longitudinal direction.

  According to the third aspect of the present invention, the first strainer and the second strainer are provided in the middle in the longitudinal direction of the liquid storage portion, thereby preventing the pump air from being smeared with a simple configuration. Can do. In addition, it is possible to reduce the amount of liquid remaining on the strainer during operation of the pump and to operate with a small amount of liquid.

  According to the cleaning device of the present invention, it is possible to prevent air from flowing in the pump with a simple configuration. In addition, it is possible to reduce the amount of liquid remaining on the strainer during operation of the pump and to operate with a small amount of liquid.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the washing | cleaning device of one Example of this invention, and shows one part in cross section. It is a longitudinal cross-sectional view of the side view which shows the lower part of the washing | cleaning device of FIG. 1, and one part is abbreviate | omitted and shown.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic view showing a cleaning device 1 according to an embodiment of the present invention, and a part thereof is shown in cross section. FIG. 2 is a longitudinal sectional view in side view showing the lower part of the cleaning device 1 of FIG.

  Hereinafter, first, the overall configuration and operation method of the cleaning device 1 will be described, and then the strainer 2 which is a characteristic part of the present invention will be described. In the following, for convenience of explanation, the left-right direction in FIG. 1 is the left-right direction of the cleaning device 1, the up-down direction in FIG. 1 is the up-down direction of the cleaning device 1, and the direction orthogonal to the paper surface in FIG. A direction (front side is front) will be described. Since FIG. 2 is a side view of FIG. 1, the left-right direction in FIG. 2 is the front-rear direction of the cleaning device 1 (here, the left side of FIG. 2 is the front of the cleaning device 1).

  The cleaning device 1 of this embodiment is connected to a cleaning tank 3 in which an object to be cleaned is accommodated, a cleaning nozzle 4 for injecting a liquid to the object to be cleaned in the cleaning tank 3, and a lower part in the cleaning tank 3. Liquid storage unit 5, water supply unit 6 to liquid storage unit 5, drainage unit 7 from liquid storage unit 5, chemical solution supply unit 8 to liquid storage unit 5, and cleaning nozzle 4 for cleaning the liquid in liquid storage unit 5 Is provided with a circulating means 9 for supplying the liquid, a heating means 10 for heating the liquid in the liquid reservoir 5, and a control means (not shown) for controlling these means 6-10.

  The object to be cleaned is not particularly limited, but is a medical instrument such as forceps. In the cleaning tank 3, cleaning nozzles 4 are provided in a plurality of upper and lower stages, and an object to be cleaned is disposed between the upper and lower cleaning nozzles 4. At this time, the object to be cleaned is placed on a grid-like (or net-like) shelf. Further, the object to be cleaned may be accommodated in a basket or the like as desired.

  The cleaning tank 3 is a hollow container that accommodates an object to be cleaned. In the present embodiment, the cleaning tank 3 has a substantially rectangular hollow box shape. The cleaning tank 3 can be opened and closed by a door (not shown). The object to be cleaned can be taken in and out of the cleaning tank 3 by opening the door. The door is provided on the front surface of the cleaning tank 3, but may be provided on both the front surface and the back surface of the cleaning tank 3.

  The cleaning nozzle 4 injects liquid onto the object to be cleaned in the cleaning tank 3. The cleaning nozzle 4 is provided in the cleaning tank 3 in a plurality of stages. In the present embodiment, a base end portion of an arm-shaped support member 11 is held in one side portion of the cleaning tank 3 in a plurality of upper and lower stages. Extend towards. And the longitudinal direction center part of the washing nozzle 4 is hold | maintained at the extension front-end | tip part so that rotation around a vertical axis is possible.

  The cleaning nozzle 4 is formed with a plurality of nozzle holes (not shown) for ejecting the liquid supplied through the support member 11. When a liquid is supplied into the cleaning nozzle 4 through the support member 11, the liquid is ejected from the nozzle hole of the cleaning nozzle 4. By this jet flow, the cleaning nozzle 4 rotates around the bearing portion at the end of the support member 11. The cleaning nozzle 4 provided at the upper end in the cleaning tank 3 ejects liquid only downward, and the cleaning nozzle 4 provided at the lower end in the cleaning tank 3 ejects liquid upward only, The cleaning nozzles 4 other than the unit eject liquid in both the upper and lower directions.

  By the way, as indicated by the one-dot chain line in FIG. In the illustrated example, the cleaning nozzles 4 provided at both upper and lower ends are provided in the cleaning tank 3 itself, and the other cleaning nozzles 4 are provided in the cleaning rack 12. A water distribution member 13 is provided on one side of the cleaning rack 12, support members 11 are provided on the water distribution member 13 in a plurality of upper and lower stages, and the cleaning nozzle 4 is rotatably held by each support member 11. Yes. The cleaning rack 12 is provided with shelves for the objects to be cleaned at the upper part of each cleaning nozzle 4 and the lower part of the cleaning rack 12. When the cleaning rack 12 is stored in the cleaning tank 3, a pipe from a circulation pump 14 described later is connected to the water distribution member 13.

  A liquid storage unit 5 is connected to the lower part of the cleaning tank 3. In other words, the cleaning tank 3 includes the liquid storage unit 5 in the lower part. In the present embodiment, the lower wall of the cleaning tank 3 is formed on an inclined surface 3a that slopes downward as the left and right ends go inward in the left-right direction, and tilts downward as the front and rear ends go inward in the front-rear direction. It is formed on the inclined surface 3b. A recess 15 is formed in the central portion of the cleaning tank 3 in the left-right direction and in the front-rear direction. The recess 15 is recessed downward in a substantially rectangular shape, and the lower portion in the cleaning tank 3 includes the recess 15. Is the liquid reservoir 5.

  In the case of the illustrated example, a partition plate 16 made of a punching metal is provided below the cleaning tank 3. The hole diameter formed in the partition plate 16 is sufficiently larger than the eyes of the strainer 2 described later. In the present embodiment, the partition plate 16 is used as a boundary, and the cleaning tank 3 and the liquid storage unit 5 are divided. Therefore, in the case of the illustrated example, the liquid reservoir 5 is substantially constituted by the recess 15. However, the position of the partition plate 16 between the cleaning tank 3 and the liquid storage unit 5 can be appropriately changed as long as it is below the lowermost cleaning nozzle 4. In some cases, the installation of the partition plate 16 may be omitted.

  The water supply means 6 supplies water to the liquid storage unit 5 through the water supply path 17. A water supply valve 18 is provided in the water supply path 17. By opening the water supply valve 18, water can be supplied to the liquid storage unit 5. In the illustrated example, the water supply channel 17 is connected to the cleaning tank 3 to supply water to the liquid storage unit 5 via the cleaning tank 3, but the water supply unit 17 is connected to the liquid storage unit 5 to supply water. May be supplied directly to the liquid reservoir 5. The water supply means 6 may be configured to be able to supply water selected from a plurality of types of water (for example, tap water, warm water, membrane filtered water, etc.).

  The drainage means 7 drains water from the liquid storage part 5 through the drainage channel 19. A drain valve 20 is provided in the drain channel 19. By opening the drain valve 20, the water can be drained from the cleaning tank 3 or the liquid storage unit 5.

  The chemical liquid supply means 8 supplies the chemical liquid from the chemical liquid tank 21 to the liquid reservoir 5 via the liquid supply path 22. A chemical liquid pump 23 is provided in the liquid supply path 22. By operating the chemical pump 23, a set amount of chemical can be supplied to the liquid storage unit 5. In the illustrated example, the chemical liquid is directly supplied to the liquid storage section 5 by connecting the liquid supply path 22 to the liquid storage section 5, but the chemical liquid is washed by connecting the liquid supply path 22 to the cleaning tank 3. It may be supplied to the liquid reservoir 5 via the tank 3. The chemical solution supply means 8 may be configured to be able to supply a chemical solution selected from a plurality of types of chemical solutions (for example, alkaline detergents, enzyme-containing detergents, lubricating rust preventives, drying accelerators, etc.).

  The circulation means 9 circulates and supplies the liquid in the liquid storage unit 5 to the cleaning nozzle 4. Specifically, the circulation means 9 includes a circulation pipe 24 and a circulation pump 14. The circulation pipe 24 is a pipe from the liquid storage unit 5 to the support member 11 of each cleaning nozzle 4, and the circulation pump 14 is provided in the middle thereof. In the illustrated example, the piping from the liquid storage section 5 to the circulation pump 14 in the circulation piping 24 is a common conduit with the drainage channel 19 on the upstream side. A check valve 25 is provided on the outlet side of the circulation pump 14 in the circulation pipe 24. When the circulation pump 14 is actuated, the liquid in the liquid reservoir 5 is supplied to the cleaning nozzle 4 via the circulation pipe 24 and the support member 11 and injected, and returned to the liquid reservoir 5 in the lower part of the cleaning tank 3. it can.

  In this embodiment, the heating means 10 is composed of a heater 26 provided in the liquid storage unit 5. The heater 26 is an electric heater in the illustrated example, but may be a steam heater in some cases. In the case of an electric heater, on / off control is typically performed, but the output may be adjusted depending on circumstances. On the other hand, in the case of a steam heater, steam can be supplied into the steam pipe, and the condensed water of the steam is discharged to the outside through a steam trap. And the opening / closing or opening degree of the steam supply valve provided in the steam supply path is controlled.

  A liquid level detector 27 is provided in the liquid storage unit 5. Although the liquid level detector 27 does not ask | require the structure in particular, For example, it is comprised from the pressure sensor installed in the bottom part of the liquid storage part 5. FIG. In this case, the liquid level is grasped by utilizing the fact that the water pressure changes according to the liquid level in the liquid storage unit 5 and the cleaning tank 3.

  A temperature sensor 28 is provided in the liquid storage unit 5. By controlling the heater 26 based on the temperature detected by the temperature sensor 28, the temperature of the stored liquid in the liquid storage unit 5 can be adjusted.

  In addition, the cleaning device 1 is provided with an ultrasonic transducer 29 as desired. In the illustrated example, ultrasonic transducers 29 are provided on the left and right inclined surfaces 3 a below the cleaning tank 3. The ultrasonic transducer 29 is connected to an ultrasonic oscillator and controlled in oscillation.

  The control means is a controller (not shown) connected to the liquid level detector 27 and the temperature sensor 28 in addition to the means 6 to 10 described above. Specifically, the water supply valve 18, the drain valve 20, the chemical liquid pump 23, the circulation pump 14, the heater 26, the ultrasonic oscillator, the liquid level detector 27, the temperature sensor 28, and the like are connected to the controller. The controller then cleans the object to be cleaned in the cleaning tank 3 according to a predetermined procedure (program). At this time, at least the shower cleaning operation described below can be executed.

  In the shower cleaning operation, a liquid is stored in the liquid storage section 5, and the liquid is circulated and supplied to the cleaning nozzle 4 by the circulation means 9 and is ejected from the cleaning nozzle 4 onto the object to be cleaned. Specifically, first, water is supplied to the liquid reservoir 5 by the water supply means 6 until the liquid level detector 27 detects the set water level. Further, if necessary, a desired chemical solution is charged into the liquid storage unit 5 by the chemical solution supply means 8. The chemical solution supplied by the chemical solution supply means 8 is supplied in a set amount so as to have a set concentration with respect to the water supplied by the water supply means 6. Furthermore, the stored water in the liquid storage unit 5 is heated to the set temperature by the heating means 10 as necessary. The introduction of the chemical solution and the heating of the stored water are not limited to before the operation of the circulation means 9 and may be performed during the operation of the circulation means 9. In any case, in a state where a desired amount of liquid is stored in the liquid storage section 5, the circulation pump 14 is operated, and the stored liquid is supplied to the cleaning nozzle 4 via the circulation pipe 24 and the support member 11 and injected. Then, the object to be cleaned is cleaned while rotating the cleaning nozzle 4. Then, the liquid ejected from each cleaning nozzle 4 is returned to the liquid storage section 5 below the cleaning tank 3. When a predetermined end condition (for example, a set time elapses) is satisfied, the circulation pump 14 is stopped and the liquid in the liquid storage unit 5 is discharged by the drainage means 7. Then, if desired, such a shower cleaning operation is repeated to wash and rinse the object to be cleaned. For example, pre-cleaning with room temperature water without adding chemicals, main cleaning with warm water with detergent as required (typically multiple times), rinsing with warm water with rinsing agent as required (typically multiple times) Etc. are made sequentially.

Next, the strainer 2 provided in the cleaning device 1 of the present embodiment will be described.
The strainer 2 of the present embodiment is provided at the upper part of the liquid storage unit 5, but may be provided at the lower part of the cleaning tank 3 in some cases. In other words, the strainer 2 may be provided in the upper part in the liquid storage part 5 or may be provided above the liquid storage part 5 and below the lowermost cleaning nozzle 4. When the partition plate 16 is provided at the lower part in the cleaning tank 3, the strainer 2 is provided below the partition plate 16. In the illustrated example, a concave portion 15 is formed in the lower portion of the cleaning tank 3 via the front, rear, left, and right inclined surfaces 3a and 3b as described above, but the strainer 2 is formed in the upper portion of the concave portion 15. Provided.

  By the way, in the lower part of the liquid storage part 5, the suction port to the circulation pump 14 is located at a position closer to one side than the central part in the plan view (the central part in the front-rear direction and / or the central part in the left-right direction). 30 is provided. That is, the opening 30 of the connection pipe 24 to the circulation pump 14 is formed in the bottom wall (or any one of the front, rear, left and right side walls) constituting the liquid storage unit 5.

  As the strainer 2, the first strainer 2A is provided on the one side (that is, the suction port 30 side), and the second strainer 2B is provided on the other side (that is, the side opposite to the suction port 30). . Here, when each strainer 2A, 2B is compared per unit area, the total sectional area of the opening of the second strainer 2B is larger than the total sectional area of the opening of the first strainer 2A. More specifically, this embodiment is configured as follows.

  That is, in the cleaning device 1 of the present embodiment, the liquid storage portion 5 constituted by the substantially rectangular concave portion 15 is arranged along the longitudinal direction in the front-rear direction as shown in FIG. And in the example of illustration, the suction port 30 (connection opening of the circulation piping 24 with respect to the liquid storage part 5) to the circulation pump 14 is provided in the bottom wall of the near side of the liquid storage part 5. FIG.

  On the other hand, the strainer 2 is provided in the upper part in the liquid storage part 5 so that the upper opening of the liquid storage part 5 may be covered. At that time, the first strainer 2A is disposed on the suction port 30 side (here, the front half of the cleaning tank 3), and on the side opposite to the suction port 30 (here, the rear half of the cleaning tank 3) Two strainers 2B are provided. In the illustrated example, the boundary between the first strainer 2A and the second strainer 2B is the center in the front-rear direction (longitudinal direction center) of the liquid storage unit 5. It may be shifted.

  The first strainer 2A and the second strainer 2B have different eye roughness. As described above, when compared per unit area, the total sectional area of the opening of the second strainer 2B is larger than the total sectional area of the opening of the first strainer 2A. Typically, each of the strainers 2A and 2B is formed in a uniform net shape regardless of the location, and the opening ratio of the second strainer 2B is larger than the opening ratio of the first strainer 2A. In other words, each strainer 2A, 2B is formed from a mesh, and the opening of the second strainer 2B is larger than the opening of the first strainer 2A.

  According to the cleaning device 1 of the present embodiment, the net-like strainer 2 is provided on the upper part of the liquid storage unit 5, thereby suppressing the arrival of bubbles to the circulation pump 14 and preventing the air from flowing into the circulation pump 14. can do. In that case, the 1st strainer 2A with a small opening ratio can be arrange | positioned by the side of the suction inlet 30 to the circulation pump 14, and arrival of the bubble to the circulation pump 14 can be suppressed. On the other hand, the second strainer 2B having a large opening ratio can be arranged on the side opposite to the suction port 30 to the circulation pump 14 to reduce the retention of liquid on the strainer 2. Thereby, the washing | cleaning device 1 can be drive | operated in the state which restrained the storage amount of the liquid.

  That is, when the circulation pump 14 is operated, the liquid can be prevented from staying on the strainer 2, and the liquid can be quickly returned to the liquid storage unit 5. Therefore, compared with the case where the liquid stays on the strainer 2 (for example, the case where the entire strainer 2 is configured from the first strainer 2A), the liquid level in the liquid storage unit 5 can be kept relatively high, and the circulation It is easy to prevent air leakage from the pump 14. In the shower cleaning operation described above, the amount of water supplied to the liquid storage unit 5 can be reduced. And reducing the amount of water supply leads to a reduction in the amount of chemical solution input and the amount of heating, so that the running cost can be reduced. In addition, the operation efficiency can be improved by shortening the time for water supply and drainage. Since the liquid after passing through the second strainer 2B has a longer moving distance to the suction port 30 of the circulation pump 14 than the liquid after passing through the first strainer 2A, bubbles disappear during that time.

  The cleaning device 1 of the present invention is not limited to the configuration of the above embodiment and can be changed as appropriate. In particular, the strainer 2 is provided in the lower part of the cleaning tank 3 or in the upper part of the liquid storage part 5, and in the lower part of the liquid storage part 5, a suction port 30 to the pump 14 is located at a position closer to one side than the center part. The first strainer 2A is provided on the one side as the strainer 2, and the second strainer 2B is provided on the other side. When compared per unit area, the opening of the second strainer 2B is broken. As long as the total area is larger than the total cross-sectional area of the opening of the first strainer 2A, other configurations can be changed as appropriate.

  For example, in the above-described embodiment, the liquid storage unit 5 is configured by the substantially rectangular recess 15 that is elongated in the front-rear direction, but may be configured by the approximately rectangular recess 15 that is elongated in the left-right direction. Also in that case, the suction port 30 to the circulation pump 14 is provided at a position (preferably one end portion of the liquid storage section 5) closer to one side than the central portion in the longitudinal direction of the liquid storage section 5. One strainer 2A may be provided, and the second strainer 2B may be provided on the other side.

  In addition, the shape of the liquid storage unit 5 is not limited to a substantially rectangular shape, and may be, for example, a circular or elliptical concave portion in plan view. Also in that case, if the suction port 30 to the circulation pump 14 is provided at a position shifted from the center of the recess 15, the first strainer 2A is provided on the suction port 30 side, and the second strainer 2B is provided on the opposite side. Good.

  Furthermore, in the said Example, you may further provide an air blower so that the to-be-cleaned thing after washing | cleaning can be dried. In this case, the wet object to be cleaned after cleaning is dried by the hot air supplied to the cleaning tank 3.

1 Washer 2 Strainer (2A: First Strainer, 2B: Second Strainer)
3 Washing tank (3a: left and right inclined surfaces, 3b: front and rear inclined surfaces)
DESCRIPTION OF SYMBOLS 4 Washing nozzle 5 Liquid storage part 6 Water supply means 7 Drainage means 8 Chemical solution supply means 9 Circulation means 10 Heating means 11 Support member 12 Washing rack 13 Water distribution member 14 Circulation pump 15 Recessed part 16 Partition plate 17 Water supply path 18 Water supply valve 19 Drainage path 20 Drain valve 21 Chemical liquid tank 22 Liquid supply path 23 Chemical liquid pump 24 Circulation piping 25 Check valve 26 Heater 27 Liquid level detector 28 Temperature sensor 29 Ultrasonic transducer 30 Suction port

Claims (3)

A cleaning tank in which an object to be cleaned is accommodated, a cleaning nozzle for injecting a liquid to the object to be cleaned in the cleaning tank, a liquid reservoir connected to a lower part in the cleaning tank, and a liquid in the liquid reservoir A pump for supplying to the washing nozzle,
A strainer is provided at the lower part of the washing tank or the upper part of the liquid storage part,
In the lower part of the liquid storage part, a suction port to the pump is provided at a position closer to one side than the central part,
As the strainer, a first strainer is provided on the one side, while a second strainer is provided on the other side.
When compared per unit area, the total sectional area of the openings of the second strainer is larger than the total sectional area of the openings of the first strainer. Each strainer is formed in a net shape,
The cleaning device according to claim 1, wherein an opening ratio of the second strainer is larger than an opening ratio of the first strainer. The suction port to the pump is provided on the lower surface of one side in the longitudinal direction of the liquid reservoir,
The lower part of the cleaning tank or the upper part of the liquid storage part is provided with the first strainer on one side in the longitudinal direction and the second strainer on the other side in the longitudinal direction. The washer according to 2.

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