Magnetic transmission erasing type sight glass

Abstract

A magnetic transmission erasing type sight glass comprises a sight glass pipe section, glass lenses are fixed on two sides of the middle of the sight glass pipe section through flanges respectively, and the magnetic transmission erasing type sight glass is characterized in that a supporting sleeve is fixedly inserted into the upper end of the middle of the sight glass pipe section, a sealing sleeve is arranged in the supporting sleeve in a penetrating mode, and a transmission sleeve is connected to the lower end of the sealing sleeve in the sight glass pipe section in a sealing mode. A transmission shaft is rotatably mounted in the sealing sleeve, a wiping shaft is rotatably mounted in the transmission sleeve, the transmission shaft is in vertical transmission connection with the wiping shaft, flexible scrapers are respectively fixed at two ends of the wiping shaft through a pair of clamping plates, and the flexible scrapers are respectively attached to the corresponding glass lenses; a driving device is supported at the upper end of the sealing sleeve through a support, and the output end of the driving device is in transmission connection with the upper end of the transmission shaft through a magnetic coupler to drive the transmission shaft and the wiping shaft to rotate so as to drive the scraper to wipe. The utility model has the advantages of automatic wiping of the lens, good cleaning effect, long service life, no leakage of the sight glass, and safe and reliable work.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sight glass, especially a magnetic transmission erasing type sight glass. BACKGROUND

[0002] At present, the existing manual erasing type straight-through sight glass on the market is four-way pipe section type, a rotating shaft is sealingly arranged at the center of the mirror on the two ends of the pipe section, a wrench is arranged at the outer end of the rotating shaft, and a scraper is fixed on the rotating shaft at the inner side of the mirror, the pipe section is installed in the pipeline through the flanges on the other two ends during use, and is used for observing the fluid state in the pipeline or container.

[0003] 1. The operator needs to manually rotate the rotating shaft to wipe the glass mirror regularly to keep the field of view clear, especially in the case that the medium is easy to form scale, crystallize or adhere, the cleaning frequency is high, the manual operation is highly dependent, and the labor cost is increased.

[0004] 2. Frequent wiping may cause the sealing element (such as a shaft skeleton oil seal) to wear or loosen, causing leakage risk, and the sealing element is easily damaged due to frequent wiping or medium corrosion, and needs to be replaced regularly, increasing maintenance cost; in a high-temperature, high-pressure, corrosive or toxic medium environment, manual wiping may expose the operator to danger.

[0005] 3. Wiping sometimes needs to pause the equipment operation (especially in high-pressure or dangerous working conditions), which affects the production efficiency.

[0006] 4. The manual wiping type sight glass is usually designed simply, which may not be suitable for extremely high pressure, high temperature or strong corrosive environment, and the working condition range is narrow.

[0007] In summary, the manual erasing type straight-through sight glass has high manual dependence, unstable cleaning effect, limited structural reliability, high maintenance cost, easy leakage and other problems. UTILITY MODEL CONTENTS

[0008] The utility model solves the technical problem to provide a magnetic transmission erasing type sight glass which can automatically wipe the mirror, has good cleaning effect, long service life, ensures that the sight glass will not leak, and is safe and reliable in work.

[0009] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0010] A magnetically driven erasing sight glass includes a sight glass tube section, with glass lenses fixed to both sides of the middle section via flanges. The key feature is that a support sleeve is fixedly inserted into the upper middle section of the sight glass tube section, a sealing sleeve passes through the support sleeve, and a transmission sleeve is sealed and connected to the lower end of the sealing sleeve within the sight glass tube section. A transmission shaft is rotatably installed within the sealing sleeve, and a wiping shaft is rotatably installed within the transmission sleeve. The transmission shaft and the wiping shaft are perpendicularly connected. Flexible scrapers are fixed to both ends of the wiping shaft via a pair of clamps, and the flexible scrapers are respectively attached to the corresponding glass lenses.

[0011] A drive unit is supported by a bracket at the upper end of the sealing sleeve. The output end of the drive unit is connected to the upper end of the transmission shaft through a magnetic coupler. It is used to drive the transmission shaft and the wiping shaft to rotate, thereby driving the scraper to wipe.

[0012] As a further preferred embodiment, the transmission sleeve is formed by vertically welding a connecting sleeve and a wiping bushing. The connecting sleeve is connected to the lower end of the sealing sleeve by a thread, and a locking nut is connected to the upper end of the support sleeve on the sealing sleeve by a thread to lock the sealing sleeve and the transmission sleeve.

[0013] As a further preferred option, a sealing gasket is provided between the lower end of the sealing sleeve and the connecting sleeve to improve the sealing effect.

[0014] As a further preferred embodiment, copper sleeves are provided near both ends inside the sealing sleeve, and the drive shaft is rotatably mounted inside the sealing sleeve through the two copper sleeves.

[0015] As a further preferred embodiment, copper sleeves and skeleton oil seals are respectively provided near both ends inside the wiping bushing. The wiping shaft is rotatably installed inside the wiping bushing through the two copper sleeves and passes through the skeleton oil seal.

[0016] As a further preferred embodiment, the drive shaft and the wiping shaft are vertically connected via a pair of bevel gears.

[0017] As a further preferred embodiment, the support has an integrated isolation plate in the middle to improve sealing and prevent the medium in the sight glass section from entering the support through the sealing sleeve and causing leakage.

[0018] As a further preferred embodiment, the drive device is an explosion-proof DC motor, which is fixed to the upper end of the support by a motor mount. An explosion-proof housing is threaded onto the motor mount, and the explosion-proof housing is fitted over the DC motor to improve the explosion-proof performance.

[0019] As a further preferred embodiment, the magnetic coupler is a planar magnetic coupling.

[0020] The beneficial effects of this utility model are:

[0021] 1. The glass lens has no mechanical penetration design, which can avoid the leakage of media caused by the wear of traditional dynamic seals. It is especially suitable for toxic, flammable and explosive media, and the safety is significantly improved. The cleaning process does not require opening the sight glass or interrupting production, ensuring continuous operation. The flexible scraper can remove hard crystals or sticky residues that may be attached to the glass lens, which can realize automatic wiping of the lens, with good cleaning effect and maintain a clear field of vision. Operators do not need to be near high temperature, high pressure or hazardous environment, reducing occupational exposure risk.

[0022] 2. Magnetic drive achieved through magnetic coupler eliminates mechanical wear, avoiding media leakage caused by wear of traditional dynamic seals and significantly extending equipment lifespan; only periodic checks of magnetic coupling efficiency and scraper condition are required, making maintenance cycles much longer than manual wipe-off sight glasses; modular structure supports quick replacement of worn parts (such as scrapers or magnetic couplers), reducing downtime. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 yes Figure 1 A cross-sectional view of the flexible scraper after it has been rotated 90 degrees.

[0025] Figure 3 yes Figure 1 BB cross-sectional view.

[0026] Figure 4 This is a schematic diagram of the wiping shaft installation.

[0027] In the diagram: sight glass section 1, flange 2, glass lens 3, transmission sleeve 4, support sleeve 5, locking nut 6, sealing sleeve 7, magnetic coupler 8, support 9, motor base 10, explosion-proof housing 11, drive unit 12, copper sleeve 13, transmission shaft 14, sealing gasket 15, flexible scraper 16, clamping plate 17, skeleton oil seal 18, copper sleeve 19, bevel gear 20, wiping shaft 21, connecting shaft 22. Detailed Implementation

[0028] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0029] like Figures 1-4As shown, this utility model relates to a magnetically driven erasable sight glass, comprising a four-way sight glass tube section 1. Glass lenses 3 are held in place at both ends of the middle section of the sight glass tube section 1 by flanges 2 and bolts, respectively, for observing the fluid state within the pipe. A mounting hole is provided at the upper middle end of the sight glass tube section 1, and a support sleeve 5 is welded into the mounting hole. A sealing sleeve 7 is fitted through the support sleeve 5 with a clearance fit, and a transmission sleeve 4 is sealed and connected to the lower end of the sealing sleeve 7 within the sight glass tube section 1.

[0030] The transmission sleeve 4 is formed by vertically welding a connecting sleeve 401 and a wiping bushing 402. The connecting sleeve is threaded to the lower end of the sealing sleeve 7. A locking nut 6 is threaded onto the sealing sleeve 7 above the support sleeve 5 to lock the sealing sleeve 7 and the transmission sleeve 4. A sealing gasket 15 is provided between the lower end of the sealing sleeve 7 and the connecting sleeve to improve the sealing effect.

[0031] A drive shaft 14 is rotatably installed inside the sealing sleeve 7, and a wiping shaft 21 is rotatably installed inside the wiping shaft sleeve 402 of the drive sleeve 4. The drive shaft 14 and the wiping shaft 21 are arranged perpendicularly and are connected by a pair of bevel gears 20. A pair of flexible scrapers 16 are symmetrically arranged and fixed by bolts through a pair of clamps 17 at both ends of the wiping shaft 21. The flexible scrapers 16 are made of silicone and are respectively attached to the corresponding glass lens 3 on the outside.

[0032] Copper sleeves 13 are embedded near both ends of the sealing sleeve 7, and the drive shaft 14 is rotatably mounted in the sealing sleeve 7 through the two copper sleeves 13. Copper sleeves 19 and skeleton oil seals 18 are embedded in the wiping shaft sleeve 402 near both ends, and the wiping shaft 21 is rotatably mounted in the wiping shaft sleeve through the two copper sleeves 19 and passes through the skeleton oil seal 18 to improve the sealing effect.

[0033] The sealing sleeve 7 is T-shaped. A drive device 12 is fixedly supported at the upper end of the sealing sleeve 7 by a support 9 and screws. The output end of the drive device 12 is connected to the upper end of the transmission shaft 14 via a magnetic coupler 8, which drives the transmission shaft 14 and the wiping shaft 21 to rotate, thereby driving the scraper to wipe. The magnetic coupler 8 is a planar magnetic coupling, with its two parts inserted into the inner cavity of the support 9 and fixed to the output end of the drive device and the upper end of the transmission shaft 14 by set screws. An integrated isolation plate 901 is provided in the middle of the support 9, dividing the inner cavity of the support 9 into upper and lower cavities to accommodate the magnetic coupler 8 and improve sealing, preventing the medium in the sight glass section 1 from entering the support 9 through the sealing sleeve 7 and causing leakage.

[0034] The drive device 12 is an explosion-proof DC motor, which is fixedly supported on the upper end of the support 9 by a motor base 10. An explosion-proof shell 11 is threaded onto the motor base 10, and the explosion-proof shell 11 covers the outside of the DC motor to improve the explosion-proof performance. A hollow connecting shaft 22 is coaxially connected to the output end of the drive device 12 by a key. The upper half of the magnetic coupler 8 is fixed to the lower end of the connecting shaft 22 by a set screw.

[0035] During operation, the sight glass section 1 is connected to the pipeline via the connecting flanges at both ends. When the medium flowing through the pipeline needs to wipe the glass lens 3, the DC motor is started by the controller connected to the drive device 12. After starting, the drive shaft 14 is rotated through the magnetic coupler 8. The drive shaft 14 drives the wiping shaft 21 to rotate through the bevel gear. After the wiping shaft 21 rotates, it can drive the flexible scrapers 16 at both ends to rotate as well, thereby wiping the glass lens 3, thus maintaining a clear field of view and facilitating the observation of the fluid state inside the pipeline.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A magnetically driven erasable sight glass, comprising a sight glass tube section, wherein glass lenses are fixed to both sides of the middle portion of the sight glass tube section via flanges, characterized in that: The support sleeve is fixedly inserted on the middle upper end of the sight glass pipe section, the sealing sleeve is arranged in the support sleeve, the transmission sleeve is sealingly connected in the sealing sleeve, the transmission shaft is rotatably arranged in the sealing sleeve, the wiping shaft is rotatably arranged in the transmission sleeve, the transmission shaft is in perpendicular transmission connection with the wiping shaft, the flexible scraper is fixed on the wiping shaft through a pair of clamping plates at both ends of the wiping shaft, and the flexible scraper is attached to the corresponding glass lens respectively; The driving device is supported on the upper end of the sealing sleeve through the support, the output end of the driving device is in transmission connection with the upper end of the transmission shaft through the magnetic coupler, the driving device is used for driving the transmission shaft and the wiping shaft to rotate, so that the scraper is wiped.

2. A magnetic drive wiper according to claim 1, characterised in that: The transmission sleeve is vertically welded by the connecting sleeve and the wiping shaft sleeve, the connecting sleeve is in threaded connection with the lower end of the sealing sleeve, and the locking nut is in threaded connection with the upper end of the sealing sleeve on the sealing sleeve, so as to lock the sealing sleeve and the transmission sleeve.

3. A magnetic drive wiper according to claim 2, wherein: The sealing gasket is arranged between the lower end of the sealing sleeve and the connecting sleeve, so as to improve the sealing effect.

4. A magnetic drive wiper according to any one of claims 1 to 3, characterised in that: The copper sleeve is arranged in the sealing sleeve close to both ends, and the transmission shaft is rotatably arranged in the sealing sleeve through the two copper sleeves.

5. A magnetic drive wiper according to claim 2, wherein: The copper sleeve and the skeleton oil seal are arranged in the wiping shaft sleeve close to both ends, and the wiping shaft is rotatably arranged in the wiping shaft sleeve through the two copper sleeves and penetrates the skeleton oil seal.

6. A magnetic drive wiper according to claim 1 or 5, characterised in that: The transmission shaft and the wiping shaft are in perpendicular transmission connection through a pair of bevel gears.

7. A magnetic drive wiper according to claim 1, wherein: The integral isolation plate is arranged in the middle of the support, so as to improve the sealing performance.

8. A magnetic drive wiper according to claim 1, wherein: The driving device is the explosion-proof direct current motor, the motor is fixed on the upper end of the support through the motor base, the explosion-proof shell is in threaded connection with the motor base and covers the outside of the direct current motor, so as to improve the explosion-proof performance.

9. A magnetic drive wiper according to claim 1 or 7, characterized in that: The magnetic coupler is the plane magnetic coupling.

Images