CN114415311A

CN114415311A - Sight glass device

Info

Publication number: CN114415311A
Application number: CN202111521923.8A
Authority: CN
Inventors: 赵彦乐; 陈敏; 肖正明; 邱振雷
Original assignee: SHANGHAI MORIMATSU PHARMACEUTICAL EQUIPMENT ENGINEERING CO LTD
Current assignee: SHANGHAI MORIMATSU PHARMACEUTICAL EQUIPMENT ENGINEERING CO LTD
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-04-29
Anticipated expiration: 2041-12-13
Also published as: CN114415311B

Abstract

The embodiment of the invention relates to the technical field of chemical engineering, and discloses a sight glass device which comprises a sight glass seat, a sight glass main body and a transparent film. Wherein look mirror base is the cavity tube-shape that has two relative openings, and the mirror main part is located an opening part of looking mirror base and is covered this opening, looks another opening circumference of mirror base and connects production facility, and transparent film then locates between mirror base and the mirror main part, keeps apart the inner space of mirror main part and production facility for when production facility operation, transparent film prevents the inside material adhesion of production facility or even corrodes the mirror main part, protects the integrity and the cleanliness of mirror main part, maintains the good observation effect of mirror main part.

Description

Sight glass device

Technical Field

The embodiment of the invention relates to the technical field of chemical industry, in particular to a sight glass device.

Background

On industrial production equipment such as chemical industry, medicine, often through setting up the sight glass so that operating personnel direct observation seals the inside material conditions such as liquid, gas or powder of production equipment such as jar body or pot body in the production process to know production equipment's operational aspect and judge whether production activity is normal.

However, the inventors found that at least the following problems exist in the related art: most materials in chemical production have strong adhesion, and parts of the materials even have corrosivity, so that the cleanness of the sight glass is reduced after the materials are adhered to the sight glass, and the observation effect is poor.

Disclosure of Invention

An object of an embodiment of the present invention is to provide a mirror device that prevents a mirror lens from being contaminated or corroded by a material, maintains the cleanliness of the lens, and ensures that a good observation effect of a mirror is maintained.

To solve the above technical problem, an embodiment of the present invention provides a mirror device including:

the visual mirror seat is a hollow cylinder with two opposite openings;

the sight glass main body covers the opening on one side of the sight glass seat and is used for observing the inside of the production equipment;

and the transparent film is detachably arranged between the sight glass main body and the sight glass seat and used for isolating the sight glass main body from the inside of the production equipment.

In the mirror unit according to the embodiment of the present invention, the mirror main body is provided on one opening of the hollow cylindrical mirror base having two opposite openings, the mirror main body covers the opening, and the transparent film is provided between the mirror main body and the mirror base. Therefore, when the inside of the production equipment is observed by using the sight glass device provided by the embodiment of the invention, the transparent film isolates the internal space of the production equipment from the sight glass main body, so that the adhesion of materials inside the production equipment and even the corrosion of the sight glass main body can be prevented, the integrity and the cleanliness of the sight glass main body are protected, and the good observation effect of the sight glass main body is maintained.

As an alternative embodiment, in the present embodiment, an inflatable cushion is provided between the mirror main body and the surface of the mirror base facing the mirror main body; the inflatable cushion is provided with a first vent hole, the transparent film is abutted against the main body of the sight glass after the inflatable cushion is inflated, and a gap is formed between the main body of the sight glass and the surface of the sight glass seat facing the main body of the sight glass after the inflatable cushion is deflated. The inflatable cushion is arranged between the sight glass main body and the sight glass seat, when the inflatable cushion is not inflated, a gap exists between the sight glass main body and the sight glass seat, so that the transparent film can enter from the gap and extend from one side of the sight glass main body to the other side opposite to the sight glass main body to completely cover the sight glass main body, thereby protecting the sight glass main body to the maximum extent, or the transparent film is arranged between the sight glass main body and the sight glass seat, and after the inflatable cushion shrinks, the fixing of the transparent film is released, so that convenience is provided for replacing the transparent film, and the maintenance difficulty of the sight glass device is reduced; when the inflatable cushion is inflated through the first vent hole, the inflatable cushion expands and extrudes the transparent film, and the transparent film is abutted against the sight glass main body, so that the transparent film can be prevented from shifting, and the transparent film can stably protect the sight glass main body.

As an alternative embodiment, in an embodiment of the present invention, the mirror body is further provided with a second ventilation hole penetrating through the mirror body, and the second ventilation hole is used for ventilating the mirror body toward the transparent film. Set up the second venthole that runs through the sight glass main part on the sight glass main part, accessible second venthole ventilates to one side of sight glass main part orientation transparent film, like this, when needs change transparent film, ventilate to one side of sight glass main part orientation transparent film through the second venthole, and the air current makes transparent film swell, separates with the sight glass main part, and the convenience is changed transparent film.

As an alternative embodiment, in an embodiment of the invention, the surface of the mirror base facing the mirror body is provided with a first groove, and the inflatable cushion is located in the first groove. The first groove is formed in the surface, facing the sight glass main body, of the sight glass seat, and the inflatable cushion is arranged in the first groove, so that the inflatable cushion can be limited and fixed, the inflatable cushion is guaranteed not to shift, the inflatable cushion can continuously abut against and fix the transparent film, and the inflatable cushion can be prevented from shifting to shield an observation area of the sight glass main body.

As an alternative embodiment, in the embodiment of the present invention, the inflatable cushion is in a ring shape, the inflatable cushion is located on the surface of the side wall of the mirror base facing the mirror main body in a circumferential direction, and the inflatable cushion, the mirror main body and the transparent film enclose a sealed cavity after being inflated. Adopt cyclic annular inflatable packer, and set up inflatable packer along the surperficial circumference of sight glass seat orientation sight glass main part, inflatable packer after aerifing encloses into sealed chamber with sight glass main part and transparent film cooperation, like this, the observation area of sight glass main part will be in sealed space, keep apart the observation area of sight glass main part and the inner space of production facility completely, can guarantee the cleanliness of observation area, maintain good observation effect, in addition, utilize cyclic annular inflatable packer, only need use one inflatable packer can form the sealed chamber of cooperation with sight glass main part and transparent film, the manufacturing process of device has been simplified, and manufacturing cost can be reduced.

As an alternative embodiment, in an embodiment of the present invention, the viewing mirror base is in a hollow square cylinder shape, and the viewing mirror base includes two pairs of side walls disposed oppositely; the number of the inflatable cushions is two, and the inflatable cushions are respectively positioned on the surfaces of the pair of side walls of the sight glass seat facing the sight glass main body; and sealing gaskets are respectively arranged on the surfaces of the other pair of side walls of the sight glass seat facing the sight glass main body, and after the inflation cushion is inflated, a sealing cavity is enclosed by the inflation cushion, the sealing gaskets, the sight glass main body and the transparent film. The mirror seat is in a hollow square cylinder shape, the two inflatable cushions are arranged on the surfaces of one pair of opposite side walls facing the mirror main body, and the sealing gasket is arranged on the surface of the other pair of opposite side walls facing the mirror main body, so that the inflatable cushions, the sealing gasket, the mirror main body and the transparent film are matched to form a sealing cavity to protect the observation area of the mirror main body, the hollow square cylinder shape mirror seat is adopted, the mirror seat is easy to form, the manufacturing difficulty and the manufacturing cost are reduced, the sealing gasket is arranged on the surface of the side wall different from the inflatable cushions, when the transparent film is replaced, the inflatable cushions are arranged in the direction vertical to the moving direction of the transparent film, the transparent film is fixed only at two positions, when the transparent film is replaced, the inflatable cushions at the two ends of the transparent film are deflated, the sealing gaskets are required to be detached, and the transparent film can be loosened, the replacement is carried out, and the operation is simple and convenient.

As an alternative embodiment, in an embodiment of the present invention, a pair of side walls of the mirror base, which are provided with the sealing gaskets, are further provided with a limiting pad on a surface facing the mirror main body, respectively, and the limiting pads are located on a side of the sealing gaskets away from the inside of the hollow cylinder, and are used for ensuring that the gap exists between the mirror main body and the mirror base. The two side walls of the sight glass seat provided with the sealing gasket are provided with the limiting gaskets on the surfaces, and the limiting gaskets are positioned on one side of the sealing gasket far away from the inside of the hollow cylinder, so that a gap for the transparent film to enter can be ensured between the sight glass main body and the sight glass seat, and the sealing effect of the sealing cavity formed by the inflatable gasket, the sealing gasket, the sight glass main body and the transparent film is not influenced.

As an alternative embodiment, in an embodiment of the present invention, the mirror unit includes a film reserve roll and a film collection roll, one end of the transparent film is fixed to the film reserve roll, and the other end is fixed to the film collection roll;

the film collection roll drives the film backup roll to rotate when rotating so as to replace the transparent film between the sight glass main body and the sight glass seat. Set up the reserve book of film and the film collection book in transparent film's both sides, and transparent film's one end is fixed in the reserve book of film, transparent film's the other end is fixed in the film and collects the book, like this, when needs change transparent film, only need to rotate the film collection book, the transparent film who covers in the sight glass main part will be collected by the film and roll up the pull and take away, the reserve book of film then rotates under transparent film's drive, reserve transparent film random movement covers the surface to the sight glass main part, accomplish transparent film's change, change easy operation, can reduce the maintenance degree of difficulty of device.

As an alternative embodiment, in an embodiment of the present invention, the first vent hole and the second vent hole are communicated with a compressed air path, and the compressed air path is connected to an air compressor. The first vent hole and the second vent hole are connected with the air compressor through the compression air circuit, so that when the air is required to be ventilated towards one side of the transparent film of the inflatable cushion and/or the sight glass main body, only the air compressor needs to be started, and the operation is simple.

As an alternative embodiment, in an embodiment of the present invention, the compressed gas path includes:

the first air path is connected with the air compressor and the first vent hole, a first air inlet valve is arranged between the air compressor and the first vent hole, a first branch air path is arranged between the first air inlet valve and the first vent hole, and a first air outlet valve is arranged on the branch air path; and

the second gas circuit is connected with the air compressor and the second vent hole, the second gas circuit is arranged between the air compressor and the second vent hole, a second air inlet valve is arranged between the second air inlet valve and the second vent hole, a vacuum generator is arranged between the second air inlet valve and the second vent hole, the vacuum generator is further provided with a second branch gas circuit, and a second air outlet valve is arranged on the second branch gas circuit. Starting an air compressor, wherein through the arrangement of the air paths, when the transparent film needs to be replaced, a first air inlet valve on a first air path is closed, a first air outlet valve on a first branch air path is opened, the air in the inflatable cushion can be discharged through the first air path and the first branch air path, the inflatable cushion shrinks after leaking air, the sealing of the sight glass main body and the sight glass seat is released, meanwhile, a second air inlet valve of a second air path is opened, a second air outlet valve on the second branch air path is closed, the vacuum generator fails, under the operation of the air compressor, the air enters one side of the sight glass main body facing the transparent film through the second air path, the transparent film is blown up, the transparent film is completely loosened, the transparent film can be replaced by rotating the film collecting roll, after the film is sucked and replaced, the first air inlet valve of the first air path is opened, the first air outlet valve of the first branch air path is closed, air enters the inflatable cushion under the pushing of the air compressor, the inflatable cushion expands and supports and fixes the transparent film, meanwhile, a second air outlet valve of a second air path is opened, the vacuum generator operates to enable the transparent film to form low pressure towards one side of the sight glass main body, the transparent film is enabled to be attached to the sight glass main body by utilizing the air pressure difference of the two sides of the transparent film, and finally the replacement of the transparent film is completed. The transparent film is replaced by utilizing the gas path design, so that the automation degree of the replacement process can be improved, the replacement procedure is simplified, and the workload of operators is reduced.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

FIG. 1 is a schematic block diagram of one embodiment of the present invention;

FIG. 2 is a top cross-sectional view of one embodiment of the present invention;

FIG. 3 is an enlarged view of the area S of one embodiment of the present invention;

FIG. 4 is a schematic view of a circular inflatable cushion in accordance with an embodiment of the present invention;

FIG. 5 is a side sectional view of one embodiment of the present invention;

FIG. 6 is a schematic view of the attachment of a transparent film according to one embodiment of the present invention;

FIG. 7 is a schematic view of an air circuit connection according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another embodiment of the present invention;

FIG. 9 is a top cross-sectional view of another embodiment of the present invention;

FIG. 10 is a side sectional view of another embodiment of the present invention;

FIG. 11 is a schematic view of an air circuit connection according to another embodiment of the present invention;

FIG. 12 is a schematic view of a square annular inflatable cushion in accordance with another embodiment of the present invention;

FIG. 13 is a top cross-sectional view of a square annular inflatable cushion in accordance with another embodiment of the present invention;

FIG. 14 is a schematic view of an air passage connection of a square annular inflatable cushion in accordance with another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

In the embodiments of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "opened," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present invention will be further explained with reference to the following embodiments and accompanying drawings.

The core of the embodiment of the invention is that the sight glass device comprises a sight glass seat 100, a sight glass main body 200 and a transparent film 300, wherein a gap L is arranged between the sight glass seat 100 and the sight glass main body 200, the transparent film 300 penetrates through the gap L and covers the surface of the sight glass main body 200 to isolate the sight glass main body 200 from the internal environment of production equipment through the transparent film 300, so that when the sight glass device provided by the embodiment of the invention is used for observing the inside of the production equipment, the transparent film 300 isolates the internal space of the production equipment from the sight glass main body 200, the adhesion of materials inside the production equipment and the corrosion of the sight glass main body 200 can be prevented, the integrity and the cleanliness of the sight glass main body 200 are protected, and the good observation effect of the sight glass main body 200 is maintained.

The following describes in detail the implementation of the mirror device of the present embodiment, and the following is provided only for the sake of understanding and is not necessary to implement the present embodiment.

Fig. 1 shows a schematic structural view of the mirror device in this embodiment, and in this embodiment, the mirror device includes a mirror base 100, a mirror main body 200, and a transparent film 300. The mirror base 100 is a hollow cylinder with two opposite openings, the mirror main body 200 is disposed at one opening of the mirror base 100 and covers the opening of the mirror base 100, the transparent film 300 is disposed between the mirror main body 200 and the mirror base 100 and covers one surface of the mirror main body 200 facing the mirror base 100, and the other opening of the mirror base 100 faces the inside of the production equipment.

By arranging the transparent film 300 between the sight glass seat 100 and the sight glass main body 200, one surface of the sight glass main body 200 facing the inside of the production equipment is covered by the transparent film 300, so that when the inside of the production equipment is observed by using the sight glass device provided by the embodiment of the invention, the transparent film 300 isolates the inner space of the production equipment from the sight glass main body 200, the adhesion of materials inside the production equipment and even the corrosion of the sight glass main body 200 can be prevented, the integrity and the cleanliness of the sight glass main body 200 are protected, and the good observation effect of the sight glass main body 200 is maintained.

Alternatively, the main body 200 may be made of glass, quartz, transparent acrylic or other materials, as long as it has certain rigidity, is not easily stressed or deformed by heat, and is transparent, so that an operator can normally observe the inside of the production equipment through the main body 200, which is not specifically limited in the embodiment of the present invention.

In some embodiments, as shown in FIG. 2, an inflatable cushion 110 is disposed between the mirror base 100 and the mirror main body 200, the inflatable cushion 110 is disposed on a surface of the mirror base 100 facing the mirror main body 200, and the inflatable cushion 110 is provided with a first vent hole 111, so that the inflatable cushion 110 can be inflated or the inflatable cushion 110 can be deflated through the first vent hole 111. By arranging the inflatable cushion 110 between the mirror seat 100 and the mirror main body 200 and arranging the first vent hole 111 on the inflatable cushion 110, after the inflatable cushion 110 is inflated through the first vent hole 111, the inflatable cushion 110 expands, the transparent film 300 is pressed and supported on the surface of the mirror main body 200 facing the transparent film 300, the position of the transparent film 300 can be fixed, the transparent film 300 stably protects the mirror main body 200, when the inflatable cushion 110 is deflated through the first vent hole 111, the inflatable cushion 110 shrinks, a gap L appears between the mirror main body 200 and the mirror seat 100, the transparent film 300 can extend from one side of the mirror main body 200 to the other side of the mirror main body 200 and completely covers the mirror main body 200, thereby protecting the mirror main body 200, or the transparent film 300 is arranged between the mirror main body 200 and the mirror seat 100, after the inflatable cushion 110 shrinks, the fixation of the transparent film 300 is released, can provide convenience for replacing the transparent film 300 and reduce the maintenance difficulty of the sight glass device.

In some embodiments, the mirror base 100 is hollow and cylindrical, and the inflatable cushion 110 is located on and circumferentially disposed along a surface of the mirror base 100 facing the mirror body 200, the inflatable cushion 110 being annular. When the cross-sectional shape of the mirror base 100 is circular, the inflatable cushion 110 is circular. As shown in fig. 2 and 4, the annular inflatable cushion 110 is annular, the annular inflatable cushion 110 is located on the surface of the mirror base 100 facing the mirror main body 200 and is disposed along the circumferential direction of the surface, and after the annular inflatable cushion 110 is inflated, the annular inflatable cushion 110, the mirror main body 200 and the transparent film 300 together form a sealed cavity. The circular inflatable cushion 110 is adopted, the circular inflatable cushion 110 is arranged along the circumferential direction of the surface of the sight glass seat 100 facing the sight glass main body 200, the circular inflatable cushion 110 after inflation is matched with the sight glass main body 200 and the transparent film 300 to form a sealed cavity, in this way, the observation area of the sight glass main body 200 completely falls into the sealed cavity, materials in production equipment are difficult to enter the sealed cavity, the phenomenon that lenses in the observation area of the sight glass main body 200 are adhered and even corroded by the materials inside the production equipment is avoided, the observation area of the sight glass main body 200 is completely separated from the inner space of the production equipment, the cleanliness of the observation area can be ensured, and a good observation effect is maintained.

Alternatively, the cross-sectional shape of the mirror base 100 may be a triangular ring shape, an elliptical ring shape, a polygonal ring shape or other shapes, the shape of the inflatable cushion 110 is the same as the cross-sectional shape of the mirror base 100, the inflatable cushion 110 may cooperate with the mirror main body 200 and the transparent film 300 to form a sealed cavity without affecting the viewing effect of the mirror main body 200, and the inflatable cushion 110 may also be a transparent inflatable cushion made of a transparent material, so that even if the transparent inflatable cushion is displaced due to an external force, the viewing effect of the mirror main body 200 is maintained, which is not particularly limited in the embodiment of the present invention.

In some embodiments, as shown in fig. 2 and 3, a second vent hole 210 penetrating through the mirror main body 200 is formed in an S region of the mirror main body 200, a vent hole connector 211 is formed at the second vent hole 210, the vent hole connector 211 is located in the second vent hole 210, and the vent hole connector 211 can be used to vent the side, facing the transparent film 300, of the mirror main body 200 through the second vent hole 210, so that when the transparent film 300 needs to be replaced, the side, facing the transparent film 300, of the mirror main body 200 is vented through the second vent hole 210, and the transparent film 300 is expanded by the airflow and separated from the mirror main body 200, thereby facilitating replacement of the transparent film 300; after the transparent film 300 is replaced, the inflatable cushion 110 is inflated to fix the transparent film 300 on the surface of the mirror main body 200 facing the transparent film 300, the inflatable cushion 110, the mirror main body 200 and the transparent film 300 together form a sealed cavity, at this time, the gas in the sealed cavity can be pumped out through the second vent 210, so that the inside of the sealed cavity is in a vacuum state, and the transparent film 300 is extruded and attached to the mirror main body 200 by the air outside the sealed cavity.

Alternatively, the second ventilation hole 210 may be disposed in another area of the mirror main body 200, as long as the observation effect of the observation area of the mirror main body 200 is not affected after the second ventilation hole 210 is disposed in the area, and the mirror main body 200 can be ventilated toward the transparent film 300, which is not particularly limited in the embodiment of the present invention.

In some embodiments, as shown in fig. 2 and 5, the surface of the mirror base 100 facing the mirror main body 200 is provided with a first groove 120, and the inflatable cushion 110 is disposed in the first groove 120, so that the inflatable cushion 110 is limited and fixed by the first groove 120, and the inflatable cushion 110 is ensured not to be displaced, so that the inflatable cushion 110 stably supports against the transparent film 300, and the displacement of the inflatable cushion 110 is prevented, which results in the blocking of the viewing area of the mirror main body 200 and the influence on the viewing effect.

In some embodiments, as shown in fig. 5, a plurality of fastening grooves 130 are further disposed on the mirror base 100, a plurality of fastening through holes 220 penetrating through the mirror body 200 are disposed at an edge of the mirror body 200, the fastening through holes 220 are disposed corresponding to the fastening grooves 130, the fastening through holes 220 are connected to the fastening grooves 130 by fastening screws a, so that the mirror base 100 is connected to the mirror body 200, the mirror base 100 is connected to the mirror body 200 by the fastening screws a, the mirror body 200 can be prevented from being separated from the mirror base 100, and the mirror device can be prevented from being damaged.

Further, the fastening screw a is further sleeved with a limiting pad B, the limiting pad B is located between the sight glass seat 100 and the sight glass main body 200, and the limiting pad B is arranged between the sight glass seat 100 and the sight glass main body 200, so that a gap L between the sight glass seat 100 and the sight glass main body 200 can be ensured, and therefore the transparent film 300 can enter a space between the sight glass seat 100 and the sight glass main body 200 through the gap L, and the transparent film 300 can protect the sight glass main body 200 finally. The width of clearance L can be adjusted through adjusting the thickness of adjusting spacing pad B.

In some embodiments, as shown in FIG. 6, the mirror unit further comprises a film backup roll 310 and a film collection roll 320, wherein one end of the transparent film 300 is fixed to the film backup roll 310, and the other end of the transparent film 300 is fixed to the film collection roll 320, and when the film collection roll 320 rotates, the film backup roll 310 is rotated, so as to replace the transparent film 300 between the mirror body 200 and the mirror base 100. Through setting up the reserve book of film 310 and the film collection book 320 respectively at transparent film 300 both ends to make transparent film 300's one end be fixed in the reserve book of film 310, the other end is fixed in the film collection book 320, when needing to be changed transparent film 300, only need rotate film collection book 320, can drive the reserve book of film 310 and rotate, thereby make transparent film 300 that is located between sight glass main part 200 and sight glass seat 100 move along the direction h that shows the figure, and then accomplish the change of transparent film 300, whole change operation process is simple, can reduce the maintenance degree of difficulty of sight glass device.

Alternatively, the transparent film 300 may be a polyethylene film, a polypropylene film, a polyester film or a film made of other materials, as long as the film has a certain flexibility, can be attached to the main body 200, and is transparent, so that the inside of the production equipment can be observed normally through the film, and the positions of the film standby roll 310 and the film collecting roll 320 can also be reversed, so that the transparent film 300 moves in the direction opposite to the direction h when being replaced, which is not particularly limited in the embodiment of the present invention.

In some embodiments, as shown in fig. 7, the first and second vent holes 111 and 210 are connected to the compression air passage 400, and the compression air passage 400 is connected to the air compressor 500. The first vent hole 111 and the second vent hole 210 are connected by the compressed air circuit 400, so that when the mirror main body 200 and/or the inflatable cushion 110 need to be ventilated, only the air compressor 500 needs to be started, and the operation is simple.

It will be appreciated that the ventilation to the side of the mirror body 200 facing the transparent film 300 and/or the inflatable cushion 110 includes: the air is supplied only to the inflatable cushion 110, or the air is supplied only to the side of the mirror body 200 facing the transparent film 300, or both the side of the mirror body 200 facing the transparent film 300 and the inflatable cushion 110.

In some embodiments, as shown in fig. 7, the compression air path 400 includes a first air path 410 and a second air path 420, the first air path 410 connects the air compressor 500 and the first vent hole 111, and the second air path 420 connects the air compressor 500 and the vent hole connector 211, wherein the air compressor 500 and the first vent hole 111 are provided with a first air inlet valve 411, a first branch air path 412 is further provided between the first air inlet valve 411 and the first vent hole 111, and a first air outlet valve C is further provided on the first branch air path 412; a second air inlet valve 421 is arranged between the air compressor 500 and the second vent hole 210, a vacuum generator 422 is further arranged between the second air inlet valve 421 and the second vent hole 210, the vacuum generator 422 is connected with a second branch air passage 423, and a second air outlet valve D is arranged on the second branch air passage 423. Through the arrangement of the air paths, when the transparent film 300 needs to be replaced, the air compressor 500 is started, the first air inlet valve 411 on the first air path 410 is closed, the first air outlet valve C on the first branch air path 412 is opened, the air in the inflatable cushion 110 can be discharged through the first air path 410 and the first branch air path 412, at this time, the inflatable cushion 110 is deflated and then shrinks, the sealing between the sight glass main body 200 and the sight glass base 100 is released, meanwhile, the second air inlet valve 421 of the second air path 420 is opened, the second air outlet valve D on the second branch air path 423 is closed, at this time, the vacuum generator 422 fails, under the operation of the air compressor 500, the air enters the side, facing the transparent film 300, of the sight glass main body 200 through the second vent hole 210, the transparent film 300 is blown up, at this time, the transparent film 300 can be replaced by rotating the film collecting roll 320, after the transparent film 300 is pumped and replaced, the first air inlet valve 411 of the first air path 410 is opened, the first air outlet valve C of the first branch air path 412 is closed, air enters the inflatable cushion 110 under the pushing of the air compressor 500, the inflatable cushion 110 expands to support and fix the transparent film 300, meanwhile, the second air outlet valve D of the second branch air path 423 is opened, the vacuum generator 422 operates to enable the transparent film 300 to form low pressure towards one side of the sight glass main body 200, the transparent film 300 is enabled to be attached to the sight glass main body 200 by utilizing the air pressure difference of the two sides of the transparent film 300, and finally the replacement of the transparent film 300 is completed. The air path design is utilized to replace the transparent film 300, so that the automation degree of the replacement process can be improved, the replacement procedure is simplified, and the workload of operators is reduced.

The invention also provides a sight glass device, and the sight glass seat 100 in the embodiment is in a square hollow cylinder shape.

As shown in fig. 8, 9 and 10, the mirror base 100 is a square hollow cylinder, and includes two pairs of side walls disposed oppositely, at this time, two inflatable cushions are provided, and includes a first inflatable cushion 1101 and a second inflatable cushion 1102, which are respectively disposed on the surfaces of a pair of side walls of the mirror base 100 facing the mirror main body 200, and the surfaces of the other pair of side walls of the mirror base 100 facing the mirror main body 200 are respectively provided with a sealing cushion, which includes a first sealing cushion 140 and a second sealing cushion 150, and after the first inflatable cushion 140 and the second inflatable cushion 150 are inflated, the first sealing cushion 140, the second sealing cushion 150, the mirror main body 200 and the transparent film 300 are enclosed together to form a sealed cavity. The mirror base 100 is in the shape of a hollow square tube, two inflatable cushions are arranged on the surfaces of one pair of opposite side walls facing the mirror main body 200, and a sealing gasket is arranged on the surface of the other pair of opposite side walls facing the mirror main body 200, so that the inflatable cushions, the sealing gasket, the mirror main body 200 and the transparent film 300 are matched to form a sealing cavity to protect the observation area of the mirror main body, the mirror base 100 is in the shape of a hollow square tube, the manufacturing difficulty and the manufacturing cost can be reduced, the sealing gasket is arranged on the surface of the side wall different from the inflatable cushions, when the transparent film 300 is replaced, the inflatable cushions are arranged in the direction vertical to the moving direction of the transparent film 300, the transparent film 300 is fixed only at two positions, when the transparent film 300 is replaced, the inflatable cushions at two ends of the transparent film 300 only need to be deflated, the sealing gaskets do not need to be disassembled, the transparent film 300 can be loosened for replacement, and the operation is simple.

Alternatively, the cross section of the hollow cylindrical mirror holder 100 in the opening direction may also be triangular, circular, oval or other polygonal shapes, as long as the mirror holder 100 can mount the mirror main body 200, cooperate with the mirror main body 200, the inflatable cushion and the sealing gasket to form a sealed cavity, and enable the transparent film 300 to be replaced normally, which is not limited in the embodiment of the present invention.

In some embodiments, as shown in FIG. 9, the mirror base 100 has a second groove 160 on the sidewall of the first inflatable cushion 1101, a third groove 170 on the sidewall of the second inflatable cushion 1102, the first inflatable cushion 1101 is disposed in the second groove 160, the second inflatable cushion 1102 is disposed in the third groove 170, and the inflatable cushion is retained by the grooves to prevent the inflatable cushion from shifting.

Further, as shown in fig. 10, a fourth groove 180 is further disposed on the side wall of the mirror base 100 where the first sealing gasket 140 is disposed, a fifth groove 190 is further disposed on the side wall of the second sealing gasket 150, and the first sealing gasket 140 is disposed in the fourth groove 180, and the second sealing gasket 150 is disposed in the fifth groove 190, so that the first sealing gasket 140 and the second sealing gasket 150 can be prevented from shifting, and the sealing performance of a sealed cavity enclosed by the inflated first inflatable cushion 1101, the inflated second inflatable cushion 1102, the first sealing gasket 140, the inflated second sealing gasket 150, the mirror main body 200, and the transparent film 300 is ensured, thereby effectively protecting the mirror main body 200.

Alternatively, the first and

second gaskets

140 and 150 may be made of a sealing material with a certain elasticity, such as rubber or silicone, so that the sealing performance of the sealing cavity can be ensured by pressing the gaskets, and a buffer can be formed between the mirror base 100 and the mirror main body 200 to prevent the mirror base 100 and the mirror main body 200 from being pressed against each other and damaged.

Further, as shown in fig. 10, the mirror base 100 is further provided with a plurality of fastening grooves 130 on the side wall provided with the fourth groove 180 and the fifth groove 190, the fastening grooves 130 are located on one side of the outside of the fourth groove 180 and the fifth groove 190, which is close to the edge of the mirror main body 200, the mirror main body 200 is provided with a plurality of fastening through holes 220, the fastening through holes 220 and the fastening grooves 130 are arranged in a one-to-one correspondence, and the fastening screws a pass through the fastening through holes 220 and enter the fastening grooves 130, thereby connecting the mirror base 100 and the mirror main body 200, so that the mirror main body 200 is fixed to the mirror base 100, preventing the mirror main body 200 from being separated from the mirror base 100, and avoiding the mirror device from being damaged.

In some embodiments, as shown in fig. 10, the mirror body 200 is provided with a sixth groove 230 and a seventh groove 240 at positions corresponding to the fourth groove 180 and the fifth groove 190, the sixth groove 230 is used for disposing the first gasket 140, the seventh groove 240 is used for disposing the second gasket 150, when the mirror housing 100 is coupled with the mirror body 200, the first gasket 140 is disposed between the fourth groove 180 and the sixth groove 230, and the second gasket 150 is disposed between the fifth groove 190 and the seventh groove 240. The first sealing gasket 140 and the second sealing gasket 150 can be prevented from shifting in the using process of the sight glass device by limiting and fixing the grooves on the two sides, and the observation work is ensured to be smoothly carried out.

Further, as shown in fig. 10, the fastening screw a is sleeved with a position-limiting pad B, which is located between the mirror base 100 and the mirror main body 200, so that when the mirror base 100 is connected to the mirror main body 200, the position-limiting pad B can ensure that a certain distance is maintained between the mirror base 100 and the mirror main body 200, even if there is a gap L between the mirror base 100 and the mirror main body 200, the transparent film 300 can enter the space between the mirror base 100 and the mirror main body 200 through the gap L, thereby protecting the mirror main body.

It can be understood that, when the first gasket 140 and the second gasket 150 are disposed between the mirror base 100 and the mirror main body 200, the spacing pad B may not be disposed between the mirror base 100 and the mirror main body 200, and it can be known that the first gasket 140 and the second gasket 150 are disposed on the surface of the mirror base 100 facing the mirror main body 200 of a pair of opposite sidewalls, and at this time, the mirror base 100 and the mirror main body 200 are affected by the first gasket 140 and the second gasket 150, and a gap L exists between the other pair of sidewalls and the mirror main body 200, and the transparent film 300 can enter between the mirror base 100 and the mirror main body 200 through the gap L.

Further, as shown in fig. 11, a first inflation inlet 1101a is disposed on the first inflation cushion 1101, a second inflation inlet 1102a is disposed on the second inflation cushion 1102, the first inflation inlet 1101a and the second inflation inlet 1102a are sequentially connected to the air compressor 500 through a first air channel 410, a first air inlet valve 411 is disposed between the first inflation inlet 1101a and the air compressor 500, a first branch air channel 412 is disposed between the first air inlet valve 411 and the first inflation inlet 1101a, a first air outlet valve C is disposed on the first branch air channel, the second air vent 210 is connected to the compressor 500 through a second air channel 420, a second air inlet valve 421 is disposed between the second air vent 210 and the air compressor 500, a vacuum generator 422 is further disposed between the second air inlet valve 421 and the second air vent 210, a second branch air channel 423 is further disposed at the vacuum generator 422, and a second air outlet valve D is disposed on the second branch air channel 423. When the transparent film 300 needs to be replaced, the air compressor 500 is started, the first air inlet valve 411 is closed, the first air outlet valve C is opened, the air in the first inflatable cushion 1101 and the second inflatable cushion 1102 is exhausted through the first air outlet valve C, the first inflatable cushion 1101 and the second inflatable cushion 1102 shrink and do not squeeze the transparent film 300 any more, at this time, the second air inlet valve 421 is opened, the vacuum generator 422 fails, the air compressor 500 supplies air to the side, facing the transparent film 300, of the mirror main body 200 through the second air passage 420 and the second air passage 210, the transparent film 300 is blown up, at this time, the transparent film 300 can be replaced by rotating the film collecting roll 320, when the transparent film 300 is replaced, the first air inlet valve 411 is opened, the first air outlet valve C is closed, at this time, the air compressor 500 supplies air to the first air inlet 1101a and the second air inlet 1102a through the first air passage 410, so as to fill the first inflatable cushion 1101 and the second inflatable cushion 1102, after the first inflatable cushion 1101 and the second inflatable cushion 1102 are inflated, the transparent film 300 is extruded and fixed, the first air inlet valve 411 is closed, meanwhile, the second air outlet valve D is opened, at the moment, the vacuum generator 422 is started, a sealed cavity formed by the first inflatable cushion 1101, the second inflatable cushion 1102, the first sealing gasket 140, the second sealing gasket 150, the transparent film 300 and the sight glass main body 200 is vacuumized, the transparent film 300 is extruded by air towards one side of the sight glass base 100 and clings to the sight glass main body 200, the second air inlet valve 421 and the second air outlet valve D are closed, finally, the transparent film 300 is replaced, the whole replacement process can be controlled and completed through the control equipment in a unified mode, an operator only needs to start the air compressor 500, and the air valve state can be adjusted, and the operation is simple.

In other embodiments, as shown in fig. 12 and 13, the inflatable cushion is a square annular inflatable cushion 1103, and no sealing gasket is provided at this time, the square annular inflatable cushion 1103 is circumferentially disposed along the side of the mirror base 100 facing the mirror main body 200 and located on the surface of the square annular inflatable cushion 1103 facing the mirror main body 200, and at this time, the square annular inflatable cushion 1103 is provided with a vent hole 1103a, and after the square annular inflatable cushion 1103 is inflated, a sealed cavity is defined by the square annular inflatable cushion 1103, the mirror main body 200 and the transparent film 300, so as to effectively protect the surface of the mirror main body 200 facing the transparent film 300. By arranging the square annular inflatable cushion 1103, a sealed cavity can be formed by only one inflatable cushion matched with the sight glass main body 200 and the transparent film 300, and the manufacturing difficulty and the manufacturing cost of the sight glass device are reduced.

Further, as shown in fig. 13, a groove M is formed around the mirror base 100 on the side of the mirror base 100 facing the mirror main body 200, the square annular inflatable cushion 1103 is disposed in the groove M, and the square annular inflatable cushion 1103 can be fixed by disposing the square annular inflatable cushion 1103 in the groove M, so as to prevent the square annular inflatable cushion 1103 from being displaced, thereby ensuring the sealing property of the sealed cavity and protecting the mirror main body 200.

In some embodiments, as shown in FIG. 14, the square ring shaped inflatable cushion 1103 is connected to the compressed air path 400 through the vent holes 1103a, and the compressed air path 400 is connected to the air compressor 500. The fitting of the viewing mirror device with the compressed air channel 400 and the air compressor 500 is substantially the same as that of the above-described embodiments, except that the square annular inflatable cushion 1103 is connected with the first air channel 410 only through the vent holes 1103a, so that the air channel connection is simpler and the operation is simple.

According to the embodiment of the invention, the transparent film 300 is arranged between the sight glass seat 100 and the sight glass main body 200, so that the sight glass main body 200 is isolated from materials in production equipment, the sight glass main body 200 is prevented from being polluted by the materials and even corroded, the sight glass main body 200 is effectively protected, and the sight glass main body 200 maintains a good observation effect.

The above-mentioned detailed description of the mirror device provided in the embodiment of the present invention is provided, and the principle and the embodiment of the present invention are explained in the present specification by applying specific examples, and the above description of the embodiment is only for helping understanding the idea of the present invention, and the content of the present specification should not be construed as limiting the present invention in all aspects of the embodiment and the application.

Claims

1. A sight glass apparatus, characterized in that, the sight glass apparatus is provided on a production facility, the sight glass apparatus includes:

the visual mirror seat is a hollow cylinder with two opposite openings;

and the transparent film is arranged between the sight glass main body and the sight glass seat and used for isolating the sight glass main body from the inside of the production equipment.

2. The mirror unit according to claim 1, wherein an inflatable cushion is provided between the mirror body and a surface of the mirror foot facing the mirror body;

the inflatable cushion is provided with a first vent hole, the transparent film is abutted against the main body of the sight glass after the inflatable cushion is inflated, and a gap is formed between the main body of the sight glass and the surface of the sight glass seat facing the main body of the sight glass after the inflatable cushion is deflated.

3. The mirror unit according to claim 2, wherein a second vent hole penetrating the mirror body is provided in the mirror body, and the second vent hole is configured to vent the mirror body toward the transparent film.

4. The mirror unit according to claim 2, wherein the surface of the mirror foot facing the mirror body is provided with a first recess, the inflatable cushion being located in the first recess.

5. The viewing mirror assembly according to claim 2, wherein said inflatable cushion is annular, and is circumferentially disposed on a surface of said viewing mirror base facing said viewing mirror body, and said inflatable cushion, when inflated, forms a sealed chamber with said viewing mirror body and said transparent film.

6. The sight glass apparatus according to claim 2, wherein the sight glass base is in the shape of a hollow square cylinder, the sight glass base comprising two pairs of oppositely arranged side walls;

the number of the inflatable cushions is two, and the inflatable cushions are respectively positioned on the surfaces of the pair of side walls of the sight glass seat facing the sight glass main body; and sealing gaskets are respectively arranged on the surfaces of the other pair of side walls of the sight glass seat facing the sight glass main body, and after the inflation cushion is inflated, a sealing cavity is enclosed by the inflation cushion, the sealing gaskets, the sight glass main body and the transparent film.

7. The sight glass apparatus of claim 6, wherein the pair of side walls of the sight glass base provided with the sealing gasket are respectively provided with a limiting pad on the surface facing the sight glass main body, and the limiting pads are positioned on one side of the sealing gasket away from the inside of the hollow cylinder and are used for ensuring that the gap exists between the sight glass main body and the sight glass base.

8. The viewing mirror unit according to any one of claims 1 to 7, wherein the viewing mirror unit comprises a film reserve roll and a film collection roll, one end of the transparent film being fixed to the film reserve roll and the other end being fixed to the film collection roll;

the film collection roll drives the film backup roll to rotate when rotating so as to replace the transparent film between the sight glass main body and the sight glass seat.

9. The sight glass apparatus of claim 3, wherein the first and second vent holes are in communication with a compressed air circuit, the compressed air circuit being connected to an air compressor.

10. The sight glass apparatus of claim 9, wherein the compressed gas circuit comprises:

the second gas circuit is connected with the air compressor and the second vent hole, the second gas circuit is arranged between the air compressor and the second vent hole, a second air inlet valve is arranged between the second air inlet valve and the second vent hole, a vacuum generator is arranged between the second air inlet valve and the second vent hole, the vacuum generator is further provided with a second branch gas circuit, and a second air outlet valve is arranged on the second branch gas circuit.