CN111871953B

CN111871953B - Environment-friendly board washing system of testing machine and using method thereof

Info

Publication number: CN111871953B
Application number: CN202010763943.5A
Authority: CN
Inventors: 邓刚; 邓志芳; 肖爱; 罗尚燕; 周敏翠; 芮涛; 王振
Original assignee: Shenzhen Caravan Signs Ltd
Current assignee: Shenzhen Caravan Signs Ltd
Priority date: 2020-08-01
Filing date: 2020-08-01
Publication date: 2021-06-25
Anticipated expiration: 2040-08-01
Also published as: CN111871953A

Abstract

The application relates to an environment-friendly board washing system of a testing machine and a using method thereof, and the environment-friendly board washing system comprises a testing machine body, wherein a washing pool is arranged at the upper end face of the testing machine body, and washing liquid is placed in the washing pool; a liquid collecting tank is fixedly arranged on the vertical side surface of the testing machine body and used for collecting cleaning liquid in the cleaning pool, and a liquid purifying mechanism used for purifying the cleaning liquid is arranged in the liquid collecting tank; the upper end of the liquid collecting box is also fixedly provided with a liquid collecting tank which is respectively communicated with the inside of the cleaning pool and the inside of the liquid collecting box. The application has the effect of reducing the waste of the cleaning liquid.

Description

Environment-friendly board washing system of testing machine and using method thereof

Technical Field

The application relates to the field of testing machines, in particular to an environment-friendly board washing system of a testing machine and a using method of the environment-friendly board washing system.

Background

At present, when a PCB is manufactured, a photoetching machine is firstly required to be used for carrying out laser engraving on the surface of one side of the PCB, the photoetching machine is required to be used for drying and solidifying a PCB after the engraving is finished, then the photoetching surface is required to be cleaned, the photoetching surface is cleaner and is difficult to remain sundries, and the PCB is required to be air-dried after the PCB is cleaned.

The equipment used during cleaning is a testing machine, the exterior of the testing machine is in a cuboid shape, a cleaning part for cleaning the PCB is arranged on the upper end face of the testing machine, as shown in figure 1, the cleaning part comprises a cleaning pool and a brush movably arranged in the cleaning pool, the horizontal section of the cleaning pool is rectangular, cleaning liquid is placed in the cleaning pool, the brush is horizontally arranged in the cleaning pool in a flat plate shape, one side of the brush with bristles faces to a pool opening in the cleaning pool, and a spring is arranged below the brush to support the brush, so that the brush can slide in the cleaning pool in the vertical direction; when the PCB needs to be cleaned, the photoetching surface on the PCB is contacted with the brush hair of the brush, and then the PCB is horizontally moved, so that the photoetching surface of the PCB is rubbed with the brush hair, the photoetching surface is cleaned, and sundries brushed by the brush fall into the cleaning liquid.

In view of the above-mentioned related art, the inventors consider that there is a drawback that the waste of the cleaning liquid is relatively large.

Disclosure of Invention

In order to reduce the waste of cleaning liquid, the application provides an environment-friendly board cleaning system of a testing machine and a using method thereof.

In a first aspect, the application provides an environmental-friendly board washing system for a testing machine, which adopts the following technical scheme:

an environment-friendly board washing system of a testing machine comprises a testing machine body, wherein a washing pool is arranged at the upper end face of the testing machine body, and washing liquid is placed in the washing pool; a liquid collecting tank is fixedly arranged on the vertical side surface of the testing machine body and used for collecting cleaning liquid in the cleaning pool, and a liquid purifying mechanism used for purifying the cleaning liquid is arranged in the liquid collecting tank; the upper end of the liquid collecting box is also fixedly provided with a liquid collecting tank which is respectively communicated with the inside of the cleaning pool and the inside of the liquid collecting box.

Through adopting above-mentioned technical scheme, the collecting tank is arranged into to the washing liquid that will wash having used in the pond, then the rethread collecting tank is arranged into the space of collecting tank inside with the washing liquid, make the clean liquid mechanism that is in collecting tank inside purify the washing liquid, thereby let dirty washing liquid change into clear washing liquid once more, so that follow-up again takes out the use with the washing liquid, reach washing liquid reuse's purpose, compare in the direct outside emission of washing liquid after will using, the waste of washing liquid can be reduced to this kind of design, and the washing liquid is difficult still to the environmental pollution.

Preferably, the liquid purifying mechanism comprises: the device comprises a partition plate, a precipitation layer, a neutralization layer and a filtering layer, wherein the partition plate is vertically provided with a plurality of parallel partition plates at intervals, and the precipitation layer, the neutralization layer and the filtering layer are respectively and sequentially positioned in a space formed by every two adjacent partition plates in the plurality of partition plates; the partition plates are provided with circulation holes, the adjacent two spaces at each partition plate are communicated through the circulation holes, and cleaning liquid entering the liquid collection tank sequentially flows through the spaces where the precipitation layer, the neutralization layer and the filter layer are located through the circulation holes.

By adopting the technical scheme, the plurality of independent spaces are formed in the liquid collecting box by the arrangement of the partition plates, so that the sedimentation layer, the neutralization layer and the filtering layer are respectively arranged, and meanwhile, the sedimentation layer, the neutralization layer and the filtering layer are not easy to mutually influence; the arrangement of the precipitation layer, the neutralization layer and the filtering layer enables dirty cleaning liquid to be converted into cleaner cleaning liquid, so that the cleaning liquid can be reused subsequently; the arrangement of the circulation holes enables the cleaning fluid to flow through the precipitation layer, the neutralization layer and the filtering layer in sequence, thereby achieving the purpose of purification.

Preferably, a liquid outlet pipe is arranged at one end of the liquid collecting box, which is far away from the through hole, and the cleaning liquid flows out of the liquid outlet pipe after sequentially passing through the precipitation layer, the neutralization layer and the filter layer; one end of the liquid outlet pipe, which is far away from the liquid collecting box, is communicated with the cleaning pool.

Through adopting above-mentioned technical scheme, the setting of drain pipe for in the washing liquid after being purified can be carried back to the washing pond again, utilize, just so need not take out the washing liquid in the collection liquid case again through other action this moment and use, make the washing liquid used repeatedly can be more convenient.

Preferably, a pressurizing piece is movably arranged between one end of the liquid outlet pipe close to the liquid collecting box and the filter layer and used for pressing the cleaning liquid passing through the filter layer into the liquid outlet pipe.

Through adopting above-mentioned technical scheme, the setting of pressurization spare for during the washing liquid can have more sufficient power to flow back to the washing pond again through the drain pipe, also accelerated the utilization efficiency to the washing liquid simultaneously.

Preferably, the pressurizing piece comprises a pressurizing block and a pull rope, the pressurizing block and one end of the liquid outlet pipe, which is close to the liquid collecting box, are positioned in the same space inside the liquid collecting box, and the pressurizing block can vertically slide along the partition plate and is positioned above the joint of the liquid outlet pipe and the liquid collecting box; one end of the pull rope is fixedly connected with one end of the pressurizing block far away from the liquid outlet pipe, the other end of the pull rope penetrates out of the liquid collecting box, the pull rope is pulled, and the pressurizing block can move upwards along the partition plate.

Through adopting above-mentioned technical scheme, behind operating personnel through the stay cord with the piece upwards pull-up of pressurizeing and release the stay cord, the cleaning liquid that the piece will be in this space of extrudeing downwards under the effect of self gravity to extrude the cleaning liquid in to the drain pipe, the cleaning liquid just can have more sufficient power when in the drain pipe this moment, compare in the mode that sets up the water pump, this kind of mode does not consume the electric energy.

Preferably, the filter layer includes: the cleaning solution passes through the pre-filtering layer, the fine filtering layer and the adsorption layer after the neutralization layer.

By adopting the technical scheme, the arrangement of the pre-filtering layer and the fine filtering layer can intercept sundries with larger volume in the cleaning liquid as much as possible, thereby being beneficial to improving the cleaning liquid purifying effect; the setting of adsorbed layer for the relatively little debris of volume can be held back through absorptive mode in the washing liquid, and cooperation prefilter layer, smart filter layer just can be purified more easily in the washing liquid.

Preferably, two adjacent circulation holes are diagonally arranged in a space partitioned by two adjacent partition plates.

Through adopting above-mentioned technical scheme for when the washing liquid passes through the space between two adjacent baffles, need pass deposit layer, neutralization layer or filter layer completely, the difficult condition of avoiding deposit layer, neutralization layer or filter layer that appears, thereby reach the purpose that promotes the washing liquid purification efficiency.

Preferably, the lower extreme lateral wall in the space of sediment layer place is provided with the blowdown hole, is provided with the closure piece in the blowdown hole, closure piece and blowdown hole detachable connection.

By adopting the technical scheme, the arrangement of the sewage draining holes is convenient for cleaning the sludge in the sediment layer outwards; the plug is arranged so that the waste hole can be opened when needed and closed when not needed.

Preferably, the bottom of the sump is inclined toward a position near where the sump communicates with the sump tank.

Through adopting above-mentioned technical scheme for hydroenergy in the collecting tank can be discharged to the collecting tank more easily, also is difficult for appearing the condition that the washing liquid spills over in the extrusion groove moreover.

In a second aspect, the application provides a use method of an environment-friendly board washing system of a testing machine, which adopts the following technical scheme:

a use method of an environment-friendly board washing system of a testing machine comprises the following steps:

s1, placing a PCB in a cleaning pool for cleaning, so that sundries on the PCB are mixed into cleaning liquid;

s2, lifting the pressurizing block upwards through a pull rope;

s3, after the cleaning liquid sequentially passes through the precipitation layer, the neutralization layer and the filtering layer to reach the space where the pressurizing part is located, the pull rope is loosened, and the pressurizing part moves downwards under the action of self gravity, so that the cleaning liquid is squeezed into the liquid outlet pipe;

and S4, returning the cleaning liquid flowing out of the liquid outlet pipe to the cleaning pool again for utilization.

By adopting the technical scheme, the cleaning liquid can be recycled, the waste of the cleaning liquid is reduced, and the cleaning liquid is not easy to influence the environment.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is an enlarged schematic view of a portion B of fig. 2.

Description of reference numerals: 1. a tester body; 11. a cleaning tank; 2. a liquid collection tank; 21. a sewage draining hole; 211. a packing member; 22. a liquid outlet pipe; 3. a liquid purifying mechanism; 31. a partition plate; 311. a flow-through hole; 32. a precipitate layer; 33. a neutralizing layer; 331. a liquid injection pipe; 34. a filter layer; 341. a pre-filter layer; 342. a fine filtration layer; 343. an adsorption layer; 4. a liquid collecting tank; 41. perforating; 42. a through hole; 5. pressing a block; 6. and pulling a rope.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a board system is washed in test machine environmental protection. Referring to fig. 1, the environment-friendly plate washing system comprises a testing machine body 1, wherein the whole testing machine body 1 is in a cuboid shape, a washing pool 11 is integrally arranged on the upper end face of the testing machine body 1, and washing liquid is placed in the washing pool 11; a liquid collecting tank 2 is fixedly arranged on one vertical side surface of the testing machine body 1, the liquid collecting tank 2 is used for collecting cleaning liquid in the cleaning pool 11, and a liquid purifying mechanism 3 for purifying the cleaning liquid is further arranged in the liquid collecting tank 2; the upper end department of header tank 2 still fixedly is provided with collecting tank 4, and collecting tank 4 communicates with inside and header tank 2 inside washing pond 11 respectively.

Referring to fig. 1, when the PCB is washed in washing pond 11, the impurity that is washed down on the PCB will mix together with the washing liquid, then along with the flow of washing liquid, the washing liquid that mixes impurity will flow into collecting tank 4 from washing pond 11, later flow into collecting tank 2 from collecting tank 4 again, it purifies to be purified by clean liquid mechanism 3 in collecting tank 2, the washing liquid that mixes impurity this moment will change into comparatively clean clear washing liquid again, use the washing liquid with waiting for later repetition, thereby reach washing liquid reuse's purpose, the waste of washing liquid has been reduced.

Referring to fig. 1, specifically, the horizontal section of the cleaning tank 11 is rectangular, and the cleaning tank 11 is located at the center of the upper end face of the testing machine.

Referring to fig. 1 and 2, the liquid collecting tank 4 is cuboid and made of hard plastic, a notch of the liquid collecting tank 4 is vertically upward, and the liquid collecting tank 4 is adhered to the side wall of the testing machine close to one side of the liquid collecting tank 2 through glue; a plurality of perforations 41 have been seted up on the lateral wall of collecting tank 4 near test machine one side, a plurality of perforations 41 are the straight line along collecting tank 4's length direction and arrange, perforation 41 is kept away from collecting tank 4 one end port and is washd the inside intercommunication of pond 11, make the washing liquid can flow in collecting tank 4 from wasing pond 11, and in the washing liquid that conveniently washs in the pond 11 flows in collecting tank 4, in this embodiment, perforation 41 is close to and washs 11 one section ports in the one end department that is close to the bottom of the pool of pond 11 pool wall, make the washing liquid can be more convenient enter into in collecting tank 4.

Referring to fig. 2, a through hole 42 is further formed at one end of the bottom of the liquid collecting tank 4, in this embodiment, a port of the through hole 42, which is far away from one end of the liquid collecting tank 4, directly penetrates through the upper end of the liquid collecting tank 2 to be communicated with the inside of the liquid collecting tank 2, so that the cleaning liquid in the liquid collecting tank 4 can enter the liquid collecting tank 2 through the through hole 42, and in other embodiments, a port of the through hole 42, which is far away from one end of the liquid collecting tank 4, can be communicated with the inside of the liquid collecting tank 2 through a plastic hose, so that the cleaning liquid in.

Referring to fig. 1 and 2, in order to make the cleaning liquid in the liquid collecting tank 4 flow into the liquid collecting tank 2 more conveniently, in this embodiment, the bottom of the liquid collecting tank 4 is inclined toward the side of the through hole 42, so that the liquid in the liquid collecting tank 4 can flow into the through hole 42 more conveniently and then flow into the liquid collecting tank 2 through the through hole 42.

Referring to fig. 1, the liquid collecting tank 2 is rectangular and made of hard plastic, and the liquid collecting tank 2 is fixed to one side surface of the testing machine body 1 by bolts.

Referring to fig. 1 and 2, the liquid cleaning mechanism 3 includes: the partition plate 31 is flat and made of hard plastic, a plurality of partition plates 31 are vertically arranged at intervals and parallel, the edge of each partition plate 31 is welded with the inner side wall of the liquid collecting tank 2, the specific number of the partition plates 31 can be selected according to actual needs, and in the embodiment, the number of the partition plates 31 is six, so that seven small spaces are formed; the sedimentation layer 32, the neutralization layer 33 and the filter layer 34 are respectively and sequentially arranged in the space separated by every two adjacent partitions 31, and the sedimentation layer 32, the neutralization layer 33 and the filter layer 34 are adjacent; the partition plate 31 is further provided with a flow hole 311, the flow hole 311 communicates two adjacent spaces at each partition plate 31, and the cleaning liquid entering the liquid collecting tank 2 sequentially flows through the spaces where the settling layer 32, the neutralizing layer 33 and the filtering layer 34 are located through the flow hole 311, so that the cleaning liquid with impurities sequentially passes through the settling layer 32, the neutralizing layer 33 and the filtering layer 34 and can be purified.

Referring to fig. 1 and 2, specifically, the neutralizing layer 33 is an acidic solution, the acidic solution is added through a liquid injection pipe 331, the liquid injection pipe 331 is a rubber hose, the liquid injection pipe 331 penetrates into the internal space of the liquid collection tank 2 from the side wall of the liquid collection tank 2 far away from the testing machine, the liquid injection pipe 331 further extends vertically and downwardly after entering the internal space of the liquid collection tank 2 from the position of the side wall of the liquid collection tank 2 close to the upper end, a plurality of liquid outlet holes are uniformly formed in the pipe wall of the liquid injection pipe 331 in the internal space of the liquid collection tank 2, and the acidic solution flows out from the liquid outlet holes after entering the internal space of the liquid collection tank 2 along the liquid injection pipe 331, so that the neutralizing layer 33 is formed to neutralize alkaline substances.

Referring to fig. 1 and 2, the filter layer 34 includes: the cleaning liquid cleaning device comprises a pre-filtering layer 341, a fine filtering layer 342 and an adsorption layer 343, wherein the pre-filtering layer 341 is sand with a larger diameter, the fine filtering layer 342 is a filter element, the filter element is fixed on the side surface of the partition plate 31 through screws, and the filter element separates two through holes 311 in the space where the filter element is located, so that the cleaning liquid in the space where the filter element is located can pass through the filter element when flowing from one through hole 311 to the other through hole 311 in the space, so that the purpose of filtering the cleaning liquid by the filter element is achieved; the adsorption layer 343 is activated carbon; the pre-filter layer 341, the fine filter layer 342, and the adsorption layer 343 are disposed adjacent to each other, and the cleaning solution passes through the pre-filter layer 341, the fine filter layer 342, and the adsorption layer 343 in sequence after passing through the neutralization layer 33, so that impurities are not easily left in the cleaning solution.

Referring to fig. 2, in order to further improve the purifying effect of the sediment layer 32, the neutralizing layer 33 and the filtering layer 34 on the cleaning liquid containing impurities, in this embodiment, two adjacent flow holes 311 are diagonally arranged in a space partitioned by two adjacent partition plates 31, so that the cleaning liquid in the purifying operation can sequentially and more completely pass through the sediment layer 32, the neutralizing layer 33 and the filtering layer 34, thereby achieving the purpose of improving the purifying effect.

Referring to fig. 2 and 3, in order to clean the sediment in the sediment layer 32, a sewage draining hole 21 is further formed in the side wall of the lower end of the space where the sediment layer 32 is located, a plug 211 is arranged in the sewage draining hole 21, the plug 211 is made of soft rubber, and the plug 211 completely plugs the sewage draining hole 21, so that the cleaning liquid is not easy to flow out from the sewage draining hole 21; the plug 211 is in interference fit with the drainage hole 21, when the sediment in the sediment layer 32 needs to be cleaned, the plug 211 needs to be pulled out of the drainage hole 21, then the sediment is cleaned from the drainage hole 21, and after the sediment is cleaned, the plug 211 is plugged back into the drainage hole 21.

Referring to fig. 1 and 2, a liquid outlet pipe 22 is further connected to a space adjacent to the adsorption layer 343 in the liquid collecting tank 2, the liquid outlet pipe 22 is located at one end of the liquid collecting tank 2, which is far away from the through hole 42, and the connection point of the liquid outlet pipe 22 and the liquid collecting tank 2 is located at the lower end of the side wall of the liquid collecting tank 2, and the cleaning liquid sequentially passes through the precipitation layer 32, the neutralization layer 33 and the filter layer 34 and then flows out of the liquid outlet pipe 22; one end of the liquid outlet pipe 22, which is far away from the liquid collecting tank 2, is communicated with the cleaning pool 11, so that the cleaned cleaning liquid returns to the cleaning pool 11 through the liquid outlet pipe 22 for reuse.

Referring to fig. 1 and 2, in order to enable the cleaning liquid to more conveniently flow into the liquid outlet pipe 22 from the liquid collecting tank 2 and further flow back to the cleaning pool 11, a pressurizing member is movably arranged in a space between one end of the liquid outlet pipe 22 close to the liquid collecting tank 2 and the filter layer 34, and the pressurizing member is used for pressing the cleaning liquid passing through the filter layer 34 into the liquid outlet pipe 22, so that the cleaning liquid can more smoothly flow back to the cleaning pool 11 through the liquid outlet pipe 22.

Referring to fig. 1 and 2, in the present embodiment, the pressurizing member includes a pressurizing block 5 and a pull rope 6, the pressurizing block 5 includes an inner iron casting block and a hard plastic shell completely wrapping the iron casting block, the upper end of the pressurizing block 5 is arc-shaped, the pressurizing block 5 and one end of the liquid outlet pipe 22 close to the liquid collecting tank 2 are located in the same space inside the liquid collecting tank 2, and the pressurizing block 5 can vertically slide along a partition plate 31 and is located above the connection position of the liquid outlet pipe 22 and the liquid collecting tank 2; the drawing is the nylon rope, and drain pipe 22 one end fixed connection is kept away from with pressurization piece 5 to 6 one ends of stay cord, and the liquid collecting box 2 is upwards worn out to the other end, upwards stimulates

stay cord

6, and 31 upward movements of baffle can be followed to pressurization piece 5.

Referring to fig. 1 and 2, when the cleaning liquid in the space where the pressurizing block 5 is located needs to be pressurized, an operator manually pulls the pull rope 6 to move upwards, so that the pull rope 6 pulls the pressurizing block 5 to move upwards, the cleaning liquid also enters the space below the pressurizing block 5 at the moment, then the pull rope 6 is loosened, the pressurizing block 5 downwards extrudes the cleaning liquid below the pressurizing block under the action of self gravity, and the position where the liquid outlet pipe 22 is connected with the liquid collecting box 2 is located below the liquid collecting box 2, so that the pressurizing block 5 can press the cleaning liquid into the liquid outlet pipe 22, and the cleaning liquid is pressed into the cleaning pool 11 through the liquid outlet pipe 22.

The use method of the environment-friendly board washing system of the testing machine comprises the following steps:

s1, placing a PCB in a cleaning pool 11 for cleaning, so that impurities on the PCB are mixed into cleaning liquid, then the cleaning liquid mixed with the impurities enters a liquid collecting tank 4 through a through hole 41, then the cleaning liquid enters a liquid collecting tank 2 from a through hole 42 of the liquid collecting tank 4, and finally the cleaning liquid enters a space where a pressurizing block 5 is located after sequentially passing through a precipitation layer 32, a neutralization layer 33 and a filter layer 34 in the liquid collecting tank 2;

s2, lifting the pressurizing block 5 upwards through the pull rope 6, so that the cleaning liquid passing through the filter layer 34 enters a space below the pressurizing layer;

s3, loosening the pull rope 6, and enabling the pressurizing piece to move downwards under the action of self gravity, so that the cleaning liquid is squeezed into the liquid outlet pipe 22;

s4, the cleaning liquid flowing out of the liquid outlet pipe 22 returns to the cleaning pool 11 again to be utilized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a board system is washed in test machine environmental protection which characterized in that: the testing machine comprises a testing machine body (1), wherein a cleaning pool (11) is arranged on the end face of the upper end of the testing machine body (1), and cleaning liquid is placed in the cleaning pool (11); a liquid collecting tank (2) is fixedly arranged on one vertical side surface of the testing machine body (1), the liquid collecting tank (2) is used for collecting cleaning liquid in the cleaning pool (11), and a liquid purifying mechanism (3) used for purifying the cleaning liquid is arranged in the liquid collecting tank (2); a liquid collecting tank (4) is fixedly arranged at the upper end of the liquid collecting tank (2), and the liquid collecting tank (4) is respectively communicated with the inside of the cleaning pool (11) and the inside of the liquid collecting tank (2);

the liquid purification mechanism (3) comprises: the filter comprises a partition plate (31), a settling layer (32), a neutralizing layer (33) and a filter layer (34), wherein the partition plate (31) is vertically provided with a plurality of mutually spaced and parallel partition plates, and the settling layer (32), the neutralizing layer (33) and the filter layer (34) are respectively and sequentially positioned in a space formed by every two adjacent partition plates (31); the partition plate (31) is provided with a circulation hole (311), the adjacent two spaces of each partition plate (31) are communicated through the circulation hole (311), and the cleaning liquid entering the liquid collecting tank (2) sequentially flows through the spaces where the settling layer (32), the neutralizing layer (33) and the filtering layer (34) are located through the circulation hole (311);

a liquid outlet pipe (22) is arranged at one end of the liquid collecting box (2) far away from the through hole (42), and cleaning liquid flows out of the liquid outlet pipe (22) after sequentially passing through the precipitation layer (32), the neutralization layer (33) and the filter layer (34); one end of the liquid outlet pipe (22) far away from the liquid collecting box (2) is communicated with the cleaning pool (11);

a pressurizing piece is movably arranged between one end of the liquid outlet pipe (22) close to the liquid collecting box (2) and the filter layer (34), and is used for pressing the cleaning liquid passing through the filter layer (34) into the liquid outlet pipe (22); the pressurizing piece comprises a pressurizing block (5) and a pull rope (6), one end of the pressurizing block (5) and one end of the liquid outlet pipe (22) close to the liquid collecting box (2) are located in the same space inside the liquid collecting box (2), and the pressurizing block (5) can vertically slide along the partition plate (31) and is located above the joint of the liquid outlet pipe (22) and the liquid collecting box (2); one end of the pull rope (6) is fixedly connected with one end, far away from the liquid outlet pipe (22), of the pressurizing block (5), the other end of the pull rope penetrates out of the liquid collecting box (2), the pull rope (6) is pulled, and the pressurizing block (5) can move upwards along the partition plate (31).

2. The environmentally friendly plate washing system for testing machines of claim 1, wherein: the filter layer (34) comprises: the cleaning solution cleaning device comprises a pre-filtering layer (34), a fine filtering layer (34) and an adsorption layer (343), wherein the pre-filtering layer (34), the fine filtering layer (34) and the adsorption layer (343) are arranged adjacently, and cleaning solution passes through the pre-filtering layer (34), the fine filtering layer (34) and the adsorption layer (343) in sequence after passing through a neutralization layer (33).

3. The environmentally friendly plate washing system for testing machines of claim 1, wherein: the two adjacent circulation holes (311) are arranged diagonally in the space partitioned by the two adjacent partition plates (31).

4. The environmentally friendly plate washing system for testing machines of claim 1, wherein: the sewage draining hole (21) is formed in the side wall of the lower end of the space where the settling layer (32) is located, a plugging piece (211) is arranged in the sewage draining hole (21), and the plugging piece (211) is detachably connected with the sewage draining hole (21).

5. The environmentally friendly plate washing system for testing machines of claim 1, wherein: the bottom of the liquid collecting groove (4) is obliquely arranged towards the position close to the communication between the bottom and the liquid collecting box (2).

6. The use method of the environment-friendly board washing system of the testing machine is based on any one of claims 1 to 5, and is characterized by comprising the following steps of:

s1, placing a PCB in a cleaning pool (11) for cleaning, so that sundries on the PCB are mixed into cleaning liquid;

s2, lifting the pressurizing block (5) upwards through the pull rope (6);

s3, after the cleaning liquid sequentially passes through the settling layer (32), the neutralizing layer (33) and the filtering layer (34) to reach the space where the pressurizing piece is located, the pull rope (6) is loosened, and the pressurizing piece moves downwards under the action of self gravity, so that the cleaning liquid is squeezed into the liquid outlet pipe (22);

s4, the cleaning liquid flowing out of the liquid outlet pipe (22) returns to the cleaning pool (11) again to be utilized.