CN220554840U - Cleaning rack and cleaning device - Google Patents

Abstract

The application relates to a wash rack and a washing device. The cleaning frame is used for cleaning a substrate of the perovskite solar cell and comprises a main body, a bracket and a surrounding frame, wherein the main body is provided with a first surface and a second surface which are opposite. One bracket is arranged on the first surface and along the edge of the first surface, and the other bracket is arranged on the second surface and along the edge of the second surface. A fence is arranged on a bracket and is arranged along the outer edge of the bracket to form a step structure with the bracket. The other enclosure is arranged on the other bracket, is arranged along the outer edge of the bracket and forms another step structure with the bracket. The cleaning frame has a double-sided design, the first surface and the second surface can bear conductive glass for cleaning, the number of single cleaning is increased exponentially, and the cleaning efficiency is improved.

Description

Cleaning rack and cleaning device

Technical Field

The application relates to the technical field of solar cell manufacturing, in particular to a cleaning frame and a cleaning device.

Background

The conductive glass of perovskite solar cells requires cleaning of the glass surface prior to use to remove the smudge on the glass surface. When cleaning, the cleaning frame is required to be used as a carrier to bear the conductive glass, however, the traditional cleaning frame can only be used for placing one piece of conductive glass, so that the quantity of the conductive glass which is cleaned once is limited, and the cleaning efficiency is low.

Disclosure of Invention

Based on this, it is necessary to provide a washing rack and a washing apparatus for solving the problem that the number of single washing is limited, which is caused by the fact that the conventional washing rack can only place one conductive glass.

A cleaning rack for cleaning a substrate of a perovskite solar cell, the cleaning rack comprising:

a body having opposed first and second surfaces;

the support is arranged on the first surface and along the edge of the first surface, and the other support is arranged on the second surface and along the edge of the second surface; and

the retaining frame is arranged on one bracket, is arranged along the outer edge of the bracket and forms a step structure with the bracket; the other enclosing baffle is arranged on the other support, is arranged along the outer edge of the support and forms another step structure with the support.

In one embodiment, the washing rack further comprises:

a support bar, wherein two ends of at least one support bar are connected with one support, and the second surface is divided into at least two areas; and

the fence strips are arranged in one-to-one correspondence with the support strips, and are arranged on the support strips, and step structures are formed on two sides of the fence strips.

In one embodiment, the main body is square, the support and the enclosure frame are square, two support bars are arranged on the second surface, and the two support bars are crossed.

In one embodiment, each of the enclosure frames is provided with at least one liquid outlet, and the liquid outlets are communicated with the inner side and the outer side of the enclosure frame.

In one embodiment, the support is provided with at least one side hole, and the side hole is communicated with the inner side and the outer side of the support and is communicated with the liquid outlet.

In one embodiment, the main body is provided with a plurality of hollow holes, and the hollow holes penetrate through the first surface and the second surface.

In one embodiment, at least one connecting portion is arranged on the outer side face of the enclosure frame.

A cleaning device comprising:

a wash rack as in any one of the embodiments above; and

the connecting assembly is connected with at least two cleaning frames in series, and two adjacent cleaning frames are arranged at intervals.

A cleaning device comprising:

the cleaning rack is the cleaning rack, and the connecting part is provided with a connecting hole; and

the connecting component is connected with at least two cleaning frames in series, and two adjacent cleaning frames are arranged at intervals;

the connecting assembly comprises a connecting piece and a spacer ring, wherein the connecting piece comprises a connecting section and a threaded section which are connected, the threaded section is in threaded connection with a connecting hole of the cleaning frame, the connecting section penetrates through connecting holes of other cleaning frames, and the spacer ring is sleeved on the connecting section and is used for spacing two adjacent cleaning frames.

In one embodiment, the side of the connecting section away from the end of the threaded section is provided with a groove.

According to the cleaning rack and the cleaning device, the supports are arranged on the edges of the first surface and the second surface of the main body respectively, the enclosing frame is arranged on the outer edge of each support to form the step structure, when the conductive glass of the perovskite solar cell is cleaned, the step surface (the support) of the step structure bears and supports the surface of the conductive glass, the side surface (the enclosing frame) of the step structure is used for limiting the side surface of the conductive glass, and the conductive glass is installed and positioned on the first surface and the second surface, so that the cleaning rack is provided with a double-sided design, and the two surfaces (the first surface and the second surface) can bear the conductive glass for cleaning, so that the number of single cleaning is increased, and the cleaning efficiency is improved.

Further, divide into two at least regions with the second surface through setting up the support strip to set up the fender strip on the support strip and form the step structure, with the support, enclose the step structure cooperation that the fender frame formed, and bear less conductive glass, therefore, the step structure that the first surface of wash rack formed can bear great conductive glass, the step structure that its second surface formed can bear less conductive glass, two surfaces of wash rack can bear the conductive glass of different specifications respectively promptly and wash, saved the material, further increase single washing glass's quantity, the cleaning efficiency is higher.

Drawings

Fig. 1 is a schematic structural view of a cleaning rack according to an embodiment of the present application.

Fig. 2 is a top view of the cleaning frame of fig. 1.

Fig. 3 is a front view of the cleaning frame of fig. 1.

Fig. 4 is a top view of the cleaning frame of fig. 1 with a substrate mounted on a first surface.

Fig. 5 is a bottom view of the cleaning frame of fig. 1 with a substrate mounted to a partial area of the second surface.

Fig. 6 is a front view of a cleaning device according to an embodiment of the present application.

Fig. 7 is a schematic structural view of a connector of the connection assembly of the cleaning device of fig. 6.

Fig. 8 is a schematic view of the spacer ring of the connection assembly of the cleaning device of fig. 6.

Reference numerals illustrate:

100. a cleaning frame; 101. a main body; A. a first surface; B. a second surface; 102. a hollowed hole; 201. a bracket; 202. a bracket strip; 301. a fence frame; 302. a liquid outlet; 303. a connection hole; 304. a surrounding barrier strip; 401/402, substrate;

500. a cleaning device; 501. a connecting piece; 502. a threaded section; 503. a groove; 601. a spacer ring.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Referring to fig. 1 to 5, fig. 1 shows a schematic structural diagram of a cleaning frame according to an embodiment of the present application, fig. 2 shows a top view of the cleaning frame in fig. 1, fig. 3 shows a front view of the cleaning frame in fig. 1, fig. 4 shows a top view of the cleaning frame in fig. 1 when a substrate is mounted on a first surface of the cleaning frame, and fig. 5 shows a bottom view of the cleaning frame in fig. 1 when a substrate is mounted on a partial area of a second surface of the cleaning frame. The washing rack 100 includes a main body 101, a bracket 201, and a fence 301. The body 101 has opposite first and second surfaces a and B. A stand 201 is provided on the first surface a and along the edge of the first surface a. The other support 201 is disposed on the second surface B and along an edge of the second surface B. A fence 301 is provided on a stand 201 and along the outer edge of the stand 201 to form a stepped structure with the stand 201. The other enclosure 301 is disposed on the other stand 201 and along the outer edge of the stand 201 to form another step structure with the stand 201.

The step structure is formed by arranging the supports 201 on the edges of the first surface A and the second surface B of the main body 101 and arranging the enclosing frame 301 on the outer edge of each support 201, when the conductive glass is cleaned, the step surface (the supports 201) of the step structure bears and supports the surface of the conductive glass, the side surfaces (the enclosing frame 301) of the step structure limit the side surfaces of the conductive glass, and the conductive glass is arranged and positioned on two sides of the first surface A and the second surface B, so that the cleaning frame 100 has a double-sided design, and the two surfaces (the first surface A and the second surface B) can bear the conductive glass for cleaning, thereby the number of single cleaning is increased and the cleaning efficiency is improved.

It should be noted that, the edge of the conductive glass may be provided with a through hole, and the through hole may allow the cleaning solution to flow in or out, so as to clean the inner surface of the conductive glass. Or, the support 201 is provided with a side hole which is communicated with the inner side and the outer side of the support 201, and when in cleaning, cleaning liquid can enter the inner side of the support 201 through the through hole to infiltrate the inner side surface of the conductive glass; after the cleaning is completed, the cleaning liquid can be discharged through the through holes. Or, the main body 101 is provided with a flow channel, the flow channel is communicated with the inner space and the outer space of the step structure, and the flow channel can be used for flowing in or flowing out the cleaning liquid. Furthermore, the conductive glass can be fixed on the step structure by tight fit and clamping.

Further, the washing rack 100 further includes a rack bar 202 and a fence bar 304. Both ends of at least one of the holder bars 202 are connected to one of the holders 201, and the second surface B is divided into at least two areas. At least one enclosing strip 304 is arranged in one-to-one correspondence with at least one support strip 202, the enclosing strip 304 is arranged on the support strip 202, and step structures are formed on two sides of the enclosing strip 304. The second surface B is divided into at least two areas by arranging the support bars 202, the barrier bars 304 are arranged on the support bars 202 to form a step structure, and the step structure is matched with the step structure formed by the support 201 and the barrier bars 301 to bear the smaller substrate 402, so that the step structure formed by the first surface A of the cleaning frame 100 can bear the larger substrate 401, the step structure formed by the second surface B of the cleaning frame can bear the smaller substrate 402, namely, two surfaces of the cleaning frame 100 can bear conductive glass with different specifications for cleaning respectively, the material is saved, the number of single-time cleaning glass is further increased, and the cleaning efficiency is higher.

In this embodiment, the main body 101 is square, the support 201 and the enclosure frame 301 are square, two support bars 202 are disposed on the second surface B, the two support bars 202 are crossed, the second surface B is divided into four areas, and correspondingly, the two enclosure bars 304 are crossed and disposed on the support bars 202. Further, the intersection of the two support bars 202 is located at the center of the second surface B, so that the areas of the four areas are the same. Obviously, the basic architecture on the second surface B is the same as that of the first surface a, except that the area of the conductive glass that the second surface B can clean is 1/4 of that of the first surface a, i.e. the sum of the areas of the 4 pieces of conductive glass that the second surface B cleans is equal to that of the first surface a cleaning one piece of conductive glass.

It should be noted that, in other embodiments, two support bars 202 may be disposed side by side, and the second surface B is divided into three areas, and two enclosure bars 304 are disposed correspondingly; alternatively, the three support bars 202 are arranged side by side or intersect, and the second surface B is divided into four or six areas, and the three enclosure bars 304 are correspondingly arranged; alternatively, more stent strips 202 may be positioned side-by-side or intersecting. Moreover, the shapes of the main body 101, the holder 201, and the enclosure frame 301 are not limited to square, and may be specifically determined depending on the shape of the conductive glass to be cleaned.

In this embodiment, a plurality of hollow holes 102 are formed in the main body 101, and the hollow holes 102 penetrate through the first surface a and the second surface B. The main body 101 is used as a substrate of the cleaning frame 100, 4 groups of round hollow holes 102 are formed in the main body 101, each group of hollow holes 102 is arranged corresponding to one area of the second surface B, and the hollow holes 102 are used for communicating cleaning liquid between the conductive glass on two sides so as to better clean the inner side surfaces of the conductive glass.

In this embodiment, the body 101 of the cleaning rack 100 has a square shape 220mm by 220mm, the overall thickness is 15mm, and four corners are rounded to form a circular arc transition with a radius of 3mm. The main body 101 is integrally formed, and is made of polytetrafluoroethylene, and has certain hardness and corrosion resistance. The hollow holes 102 have a diameter of 8mm and are arranged in 4 groups around, and 36 groups are arranged in a 6×6 form. The distance between two adjacent hollow holes 102 between groups is 39mm, and the distance between two adjacent hollow holes 102 between each group is 13mm. The size and shape of the main body 101 and the hollow hole 102 are not limited to the above, and may be determined according to the size and shape of the conductive glass to be cleaned, and the main body 101 may be made of stainless steel, ceramics, composite materials, or the like.

Further, in the first surface a, the outer ring square (outer edge) of the holder 201 and the enclosure frame 301 is identical in size to the main body 101, and the inner ring square (inner edge) is 190mm in size. In the second surface B, the outer ring square size of the stent 201 in the single region is 108mm×108mm, and the inner ring square size in the single region is 98mm×98mm. The width of the crisscross enclosure bars 304 is 3mm. Thus, the first surface a may clean a sheet of 200mm by 200mm conductive glass and the second surface B may clean 4 sheets of 100mm by 100mm conductive glass. It will be appreciated that the dimensions of the stand 201 and the enclosure 301 are not limited to the above, and may be determined according to the dimensions of the conductive glass to be cleaned.

In this embodiment, the height of the stand 201 is 4.5 mm-5 mm, the stand 201 supports the conductive glass, the conductive glass is suspended on the stand 201, four sides of the conductive glass are contacted with the stand 201, and the back surface of the conductive glass is separated from the main body 101, so that the conductive glass is easy to clean.

Further, at least one liquid drain port 302 is provided on each enclosure frame 301, and the liquid drain ports 302 are communicated with the inner side and the outer side of the enclosure frame 301. The enclosure frame 301 is located above the stand 201 to define the position of the conductive glass not to be moved, however, in order to facilitate the discharge of the cleaning liquid, the enclosure frame 301 is provided with a liquid discharge port 302, so that the enclosure frame 301 is discontinuous, and the cleaning liquid can be discharged immediately after the cleaning. Wherein, at least one side hole is arranged on the support 201, the side hole is communicated with the inner side and the outer side of the support 201 and is arranged corresponding to the liquid outlet 302 to be communicated with the liquid outlet 302, and the liquid outlet 302 and the side hole can be simultaneously formed by only arranging a notch at the corresponding position of the cleaning frame 100, thereby being convenient for processing.

In this embodiment, the width of the enclosure frame 301 is 9mm. The drain 302 has two sizes, 20mm and 10mm, respectively. Two liquid discharge ports 302 are formed in each side of the enclosure frame 301, at least one large liquid discharge port 302 and at least one small liquid discharge port 302 are formed in each side of one pair of opposite sides, and at least two small liquid discharge ports 302 are formed in each side of the other pair of opposite sides on the first surface a. At least two large drain openings 302 are provided in each side edge on the second surface B. The number and size of the liquid discharge ports 302 are not limited to the above, and may be adjusted according to actual requirements.

In order to combine the plurality of cleaning frames 100, the outer side surface of the enclosure frame 301 is provided with at least one connection portion, through which the plurality of cleaning frames 100 can be stacked together while simultaneously cleaning the plurality of conductive glass sheets, further improving cleaning efficiency. Furthermore, the washing rack 100 may also serve as a carrier for draining, drying and post-treatment, having various uses. Most importantly, the cleaning frame 100 can also be used as a jig for cleaning large-sized conductive glass on a mass production line.

In this embodiment, a protruding connection portion is respectively disposed on the left and right sides of the enclosure frame 301, and a connection hole 303 is formed on the connection portion, and the connection hole 303 is used for the connection member to pass through, so as to superimpose a plurality of cleaning frames 100. Further, the radius of the connection hole 303 is 6mm, and the radius of the binaural convex connection portion is 13.64mm. It should be noted that, in other embodiments, the connection portion may be provided with a lateral clamping groove, which may be clamped laterally on the protruding structure of the connection member, so as to place the cleaning rack 100 layer by layer.

In this embodiment, the material of the support 201, the enclosure frame 301, the support bar 202 and the enclosure bar 304 may be polytetrafluoroethylene, and is integrally formed with the main body 101, without assembling. It is obvious that in other embodiments, the material of the support 201, the enclosure frame 301, the support bar 202 and the enclosure bar 304 may be stainless steel, and the different components may be connected by welding.

Referring to fig. 6 to 8, fig. 6 is a front view of a cleaning device according to an embodiment of the present application, fig. 7 is a schematic structural view of a connector of a connection assembly of the cleaning device according to fig. 6, fig. 8 is a schematic structural view of a spacer ring of the connection assembly of the cleaning device according to fig. 6, and a cleaning device 500 according to an embodiment of the present application includes a cleaning rack 100 and a connection assembly, the connection assembly is connected in series with at least two cleaning racks 100, and two adjacent cleaning racks 100 are arranged at intervals. The specific structure of the cleaning rack 100 refers to the above embodiment, and since the cleaning device 500 of this embodiment adopts all the technical solutions of all the embodiments, the cleaning device also has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

In order to further prevent the conductive glass located at the lower layer from falling during cleaning, a supporting structure may be disposed on the enclosure frame 301 on the second surface B of the cleaning frame 100, where the supporting structure is used to support the conductive glass on the second surface B, so as to prevent the conductive glass from falling due to the loose clamping or cleaning vibration. Wherein, the bearing structure can be fixed by clamping, magnetic attraction or vacuum adsorption.

In this embodiment, the connection assembly includes a connection member 501 and a spacer 601, the connection member 501 includes a connection section and a thread section 502, the thread section 502 is in threaded connection with the connection hole 303 of one cleaning rack 100, the connection section is threaded through the connection hole 303 of another cleaning rack 100, and the spacer 601 is sleeved on the connection section for spacing two adjacent cleaning racks 100.

In this embodiment, a groove 503 is formed on a side surface of one end of the connecting section away from the threaded section 502, which is used as a hand grip for taking a person or an instrument, so as to facilitate taking and placing the cleaning device 500.

In this embodiment, the connecting piece 501 has a diameter of 15mm and a length of 200mm. The threaded section 502 has a diameter of 12mm and a length of 15mm. The recess 503 is formed by retracting the side face by 4mm and has an opening length of 25mm. The spacer ring 601 has an outer diameter of 20mm, an inner diameter of 15.2mm and a length of 10mm. It will be appreciated that the dimensions of the various portions of the connector 501 and the spacer ring 601 are not limited to those described above, and may be specifically configured as appropriate.

Illustratively, the operation of the cleaning apparatus 500 will be described using the example of cleaning 3 sheets of 200mm by 200mm and 8 sheets of 100mm by 100mm conductive glass: firstly, 3 pieces of 200 mm/200 mm conductive glass are placed at corresponding positions of the first surface A of 3 cleaning frames 100, 8 pieces of 100 mm/100 mm conductive glass are respectively placed at corresponding positions of the second surface B of 2 cleaning frames 100, connecting pieces 501 are respectively connected in series to form 3 cleaning frames 100, and layers are separated by a spacing ring 601; then, the whole cleaning device 500 is slowly placed into the cleaning liquid to carry out ultrasonic cleaning by putting the whole cleaning device on a conveyor belt and the mechanical arm grabbing the groove 503 of the connecting piece 501, and after the ultrasonic cleaning is finished, the mechanical arm lifts the cleaning device to be air-dried, and then the cleaning device is conveyed to a next cleaning pool by the same method, so that the cleaning is repeatedly carried out until the cleaning requirement is met; finally, the mechanical arm separates each layer and sequentially transmits the layers to the UV-Vis or Plasma for treatment, so that the cleaning process is completed.

In summary, the cleaning device 500 and the cleaning rack 100 of the present application can be compatible with two-size conductive glass cleaning, different-size glass, and the cleaning rack 100 of different specifications can be manufactured in a scaled-up and scaled-down manner according to the scale design, thereby saving materials. The connection assembly is matched with the connection hole 303, so that a plurality of cleaning frames 100 can be combined, and a plurality of pieces of conductive glass can be cleaned at the same time, thereby remarkably improving the production efficiency. The design of the groove 503 of the connecting piece 501 of the connecting component can be combined with the mechanical arm of the production line to carry out automatic cleaning, and the device can be popularized to the production line.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. A cleaning rack for cleaning a substrate of a perovskite solar cell, the cleaning rack comprising:

a body having opposed first and second surfaces;

the support is arranged on the first surface and along the edge of the first surface, and the other support is arranged on the second surface and along the edge of the second surface; and

the retaining frame is arranged on one bracket, is arranged along the outer edge of the bracket and forms a step structure with the bracket; the other enclosing baffle is arranged on the other support, is arranged along the outer edge of the support and forms another step structure with the support.

2. The cleaning frame of claim 1, further comprising:

a support bar, wherein two ends of at least one support bar are connected with one support, and the second surface is divided into at least two areas; and

the fence strips are arranged in one-to-one correspondence with the support strips, and are arranged on the support strips, and step structures are formed on two sides of the fence strips.

3. The cleaning rack of claim 2, wherein the main body is square, the support and the enclosure rack are square, two support strips are arranged on the second surface, and the two support strips are intersected in a cross shape.

4. A cleaning rack according to any one of claims 1 to 3 wherein each of the enclosure racks is provided with at least one drain port communicating with the inside and outside of the enclosure rack.

5. The cleaning rack of claim 4, wherein the bracket is provided with at least one side hole, and the side hole is communicated with the inner side and the outer side of the bracket and is communicated with the liquid outlet.

6. A cleaning frame according to any one of claims 1 to 3 wherein the body is provided with a plurality of hollowed-out apertures extending through the first and second surfaces.

7. A washing rack according to any one of claims 1 to 3, wherein the outer side of the enclosure rack is provided with at least one connection.

8. A cleaning device, comprising:

a washing rack, which is the washing rack according to any one of claims 1 to 7; and

the connecting assembly is connected with at least two cleaning frames in series, and two adjacent cleaning frames are arranged at intervals.

9. A cleaning device, comprising:

a cleaning rack, wherein the cleaning rack is as claimed in claim 7, and the connecting part is provided with a connecting hole; and

the connecting component is connected with at least two cleaning frames in series, and two adjacent cleaning frames are arranged at intervals;

the connecting assembly comprises a connecting piece and a spacer ring, wherein the connecting piece comprises a connecting section and a threaded section which are connected, the threaded section is in threaded connection with a connecting hole of the cleaning frame, the connecting section penetrates through connecting holes of other cleaning frames, and the spacer ring is sleeved on the connecting section and is used for spacing two adjacent cleaning frames.

10. The cleaning device of claim 9, wherein the side of the connecting section distal to the threaded section is fluted.