Sealing device

Abstract

The invention relates to the technical field of sealing, in particular to a sealing device which comprises a bottom plate, a sealing cylinder is fixedly connected to the top of the bottom plate, a fixing sleeve is fixedly connected to the outside of the sealing cylinder, a steel plate is fixedly connected to the top of the fixing sleeve, a cover plate abuts against the top of the sealing cylinder, and a pressing plate is arranged at the top of the steel plate and abuts against the cover plate. A positioning bolt is in threaded connection in the pressing plate, and the bottom of the positioning bolt extends into the steel plate; the cover plate can be extruded and fixed through the pressing plate, meanwhile, due to the fact that the cover plate is fixed through the positioning threads, larger compression deformation can be provided, the positioning nut and the pressing plate can be installed according to the actual situation, and good adaptability to installation errors is achieved; during replacement, the pressing plate does not need to be detached, the sealing piece can be conveniently and rapidly pulled out and replaced, meanwhile, the abutting plate moves downwards and abuts against the cover plate under the power action of the driving motor, the sealing line of the cover plate can be further improved, and the phenomenon of air leakage in the sealing cylinder is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of sealing, in particular to a sealing device. Background Art

[0002] Seals are components or measures that prevent fluids or solid particles from leaking between adjacent mating surfaces and prevent external impurities such as dust and moisture from invading the interior of machinery and equipment. Seals can be divided into two categories: static seals and dynamic seals. Static seals mainly include gasket seals, sealant seals, and direct contact seals. According to the working pressure, static seals can be divided into medium and low pressure static seals and high pressure static seals. Medium and low pressure static seals often use gasket seals with softer materials and wider widths, while high pressure static seals use metal gaskets with harder materials and very narrow contact widths. According to whether the seal contacts the parts that move relative to it, it can be divided into contact seals and non-contact seals; according to the seal and contact position, it can be divided into circumferential seals and end face seals. End face seals are also called mechanical seals. Centrifugal seals and spiral seals in dynamic seals are sealed by giving power to the medium when the machine is running, so they are sometimes called dynamic seals. The sealing material should meet the requirements of the sealing function. Due to the different sealed media and different working conditions of the equipment, the sealing material is required to have different applicability. The requirements for sealing materials are: ① good material density, not easy to leak the medium; ② appropriate mechanical strength and hardness; ③ good compressibility and resilience, small permanent deformation; ④ no softening or decomposition at high temperature, no hardening or brittle cracking at low temperature; ⑤ good corrosion resistance, can work for a long time in acid, alkali, oil and other media, its volume-hardness change is small, and it does not adhere to the metal surface; ⑥ small friction coefficient and good wear resistance; ⑦ softness that can be fully attached to the sealing surface; ⑧ good aging resistance and durability; ⑨ easy processing and manufacturing, low price, and easy material acquisition. Obviously, it is impossible for any material to fully meet the above requirements, but materials with excellent sealing performance can meet most of the above requirements. Sealing devices are needed when sealing objects.

[0003] A sealing device with the Chinese authorization announcement number CN221322572U is provided. An oil channel is opened inside the main body of the fuel injector, and the oil channel is crossed by an impeller. Then a guide block is arranged above the impeller so that the fuel flows downward to impact the impeller to rotate. When not in use, a speed detector is used to detect whether the impeller is rotating. When fuel leaks, the impeller is locked by a control mechanism to avoid continued fuel leakage and waste of resources. The problem that the existing fuel injector is not convenient for external monitoring when the spray hole leaks, and the residual fuel leaked in the oil channel flows out, causing waste of fuel resources is solved. The electromagnet generates magnetic force after being energized, so that the electromagnet pushes the control pad to move, so that the control pad pushes the extrusion pad to move, so that the extrusion pad supports the impeller on one side. At the same time, the extrusion pad is made of rubber material, which locks the impeller and then blocks the oil channel, thereby improving the sealing performance of the fuel injector main body to the fuel.

[0004] There are still certain shortcomings in use. It cannot provide a larger compression deformation during use, the positioning nut and the pressure plate cannot be installed according to actual conditions, the adaptability to installation errors is poor, and the pressure plate needs to be repeatedly disassembled during replacement, which reduces the convenience of pulling out and replacing the seal. At the same time, only a single extrusion seal will reduce the sealing effect, and it is impossible to perform real-time detection of the inside of the seal, so that leakage can be discovered and repaired in time when it occurs. Summary of the invention

[0005] The object of the present invention is to provide a sealing device to solve the problems raised in the above-mentioned background technology that it cannot provide a larger compression deformation when used, the positioning nut and the pressure plate cannot be installed according to actual conditions, the adaptability to installation errors is poor, and the pressure plate needs to be repeatedly disassembled when replaced, which reduces the convenience of pulling out and replacing the seal. At the same time, only a single extrusion seal will reduce the sealing effect, and it is impossible to perform real-time detection of the inside of the seal and timely discover and repair it when a leak occurs.

[0006] To achieve the above object, the present invention provides the following technical solutions: A sealing device comprises a base plate, a sealing cylinder fixedly connected to the top of the base plate, a fixing sleeve fixedly connected to the outside of the sealing cylinder, a steel plate fixedly connected to the top of the fixing sleeve, a cover plate abutting the top of the sealing cylinder, a pressure plate provided on the top of the steel plate, the pressure plate abutting against the cover plate, a positioning bolt connected to the inner thread of the pressure plate, the bottom of the positioning bolt extends into the steel plate, a leakage detection plate fixedly connected to the top of the fixing sleeve, an alarm light fixedly connected to the top of the leakage detection plate, the alarm light is electrically connected to the leakage detection plate, a pressure detector fixedly connected to the inside of the sealing cylinder, a display screen fixedly connected to the top of the base plate, the display screen is electrically connected to the pressure detector.

[0007] As a preferred solution of the present invention, a driving motor is installed on the top of the base plate, the output end of the driving motor is fixedly connected to a disc, a groove is opened in the disc, a gear disc is fixedly connected in the groove, and a gear is rotatably connected in the groove.

[0008] As a preferred solution of the present invention, the gear is arranged on the side of the toothed disc, the gear is meshed with the toothed disc, a round rod is fixedly connected to the side of the gear, and a ring is sleeved on the outside of the round rod.

[0009] As a preferred solution of the present invention, the top of the ring is fixedly connected to a limiting rod, the top of the disc is fixedly connected to a top plate, a through slot is provided in the top plate, and the limiting rod extends into the through slot and is slidably connected to the through slot.

[0010] As a preferred solution of the present invention, the top of the cover plate is abutted against a butt plate, the top of the butt plate is fixedly connected to a connecting plate, and the top of the connecting plate is fixedly connected to a vertical plate.

[0011] As a preferred solution of the present invention, the round rod is opposite to the vertical plate, and the round rod extends into the vertical plate and is slidably connected to the vertical plate.

[0012] As a preferred solution of the present invention, a support seat is fixedly connected to the bottom of the base plate, the support seat is T-shaped, the bottom of the support seat is provided with anti-slip grooves, and the material of the support seat is stainless steel.

[0013] As a preferred solution of the present invention, a pull ring is fixedly connected to the top of the cover plate, a rectangular groove is opened in the pull ring, the pull ring is made of rubber, and the pull ring is arranged on the side of the pressure plate.

[0014] As a preferred solution of the present invention, a plurality of the air leakage detection plates are provided, the plurality of the air leakage detection plates are evenly distributed on the side surface of the steel plate at equal angles, and the shapes of the plurality of air leakage detection plates are all elliptical.

[0015] As a preferred solution of the present invention, the shape of the cover plate is circular, the cross-sectional area of ​​the cover plate and the sealing cylinder is the same, and the material of the cover plate is stainless steel.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by arranging the coordinated use of steel plates, pressure plates, positioning bolts, driving motors, toothed discs, gears, vertical plates, connecting plates, abutment plates and cover plates, the cover plate can be squeezed and fixed by the pressure plate. At the same time, since it is fixed by positioning threads, a larger compression deformation can be provided. The positioning nuts and pressure plates can be installed according to actual conditions, and the installation error has good adaptability. The pressure plate does not need to be disassembled when replaced, which can facilitate the rapid pulling out and replacement of the seal. At the same time, the abutment plate is moved downward and abutted against the cover plate under the power of the driving motor, which can further improve the sealing line of the cover plate and avoid air leakage inside the sealing cylinder.

[0017] 2. In the present invention, by setting up a pressure detector, a display screen, a leakage detection plate and an alarm light for coordinated use, the pressure inside the sealing tube can be detected by the pressure detector, and the pressure intensity can be displayed on the display screen. At the same time, the leakage detection plate can be used to detect leakage between the cover plate and the sealing tube. When leakage occurs, the alarm light can flash, thereby timely discovering and repairing it. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the cover plate and the pressing plate of the present invention; Figure 3 It is a structural schematic diagram of the pressing plate and the positioning bolt of the present invention; Figure 4 It is a schematic diagram of the structure inside the sealing cylinder of the present invention; Figure 5 It is a structural schematic diagram of the gas leakage detection plate and the alarm light of the present invention; Figure 6 It is a schematic structural diagram of the cover plate and the pull ring of the present invention.

[0019] In the figure: 1. bottom plate; 2. support seat; 3. sealing cylinder; 4. display screen; 5. driving motor; 6. disc; 7. groove; 8. toothed disc; 9. top plate; 10. through groove; 11. limit rod; 12. gear; 13. round rod; 14. connecting plate; 15. abutment plate; 16. fixing sleeve; 17. leakage detection plate; 18. alarm light; 19. steel plate; 20. pressure plate; 21. cover plate; 22. positioning bolt; 23. pull ring; 24. pressure detector; 25. sleeve ring; 26. vertical plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] For examples, see Figure 1-6 , the present invention provides a technical solution: A sealing device includes a bottom plate 1, a sealing cylinder 3 is fixedly connected to the top of the bottom plate 1, a fixing sleeve 16 is fixedly connected to the outside of the sealing cylinder 3, a steel plate 19 is fixedly connected to the top of the fixing sleeve 16, a cover plate 21 is abutted against the top of the sealing cylinder 3, a pressing plate 20 is arranged on the top of the steel plate 19, the pressing plate 20 abuts against the cover plate 21, a positioning bolt 22 is connected to the inner thread of the pressing plate 20, the bottom of the positioning bolt 22 extends into the steel plate 19, a gas leakage detection plate 17 is fixedly connected to the top of the fixing sleeve 16, an alarm light 18 is fixedly connected to the top of the gas leakage detection plate 17, and an alarm light 18 is fixedly connected to the top of the gas leakage detection plate 17. The light 18 is electrically connected to the air leakage detection plate 17. The pressure inside the sealing tube 3 is detected by the pressure detector 24 and displayed on the display screen 4 to avoid air leakage. At the same time, the gas between the cover plate 21 and the sealing tube 3 can be detected by the air leakage detection plate 17. When air leakage occurs, it can be discovered in time, and the alarm light 18 flashes to prompt people to discover it in time and perform corresponding maintenance. The sealing tube 3 is fixedly connected with a pressure detector 24, and the top of the base plate 1 is fixedly connected with a display screen 4. The display screen 4 is electrically connected to the pressure detector 24.

[0022] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, a driving motor 5 is installed on the top of the bottom plate 1, and a disc 6 is fixedly connected to the output end of the driving motor 5. A groove 7 is opened in the disc 6, and a toothed disc 8 is fixedly connected in the groove 7. A gear 12 is rotatably connected in the groove 7. The cover plate 21 is placed on the top of the sealing cylinder 3, and then the pressing plate 20 is abutted against the top of the cover plate 21, and the pressing plate 20 is fixed by rotating the positioning bolt 22, so that the pressing plate 20 and the cover plate 21 are tightly abutted together, and then the disc 6 and the toothed disc 8 are driven to rotate by the driving motor 5. Since the toothed disc 8 and the gear 12 are meshed, the gear 12 can be driven to circulate in the toothed disc 8, and then the gear 12 is driven to rotate. 12 drives the round rod 13 to move in the vertical plate 26, so that the round rod 13 squeezes the vertical plate 26, and then the vertical plate 26, the connecting plate 14, the abutment plate 15 and the cover plate 21 can be tightly abutted together, further improving the sealing performance inside the sealing cylinder 3. The gear 12 is arranged on the side of the toothed disk 8, and the gear 12 is meshed with the toothed disk 8. The side of the gear 12 is fixedly connected with the round rod 13, and the outer part of the round rod 13 is sleeved with a ring 25. The top of the ring 25 is fixedly connected with the limiting rod 11, and the top of the disc 6 is fixedly connected with the top plate 9. A through groove 10 is opened in the top plate 9, and the limiting rod 11 extends into the through groove 10 and is slidably connected with the through groove 10.

[0023] Among them, the cover plate 21 can be squeezed and fixed by the pressure plate 20. At the same time, since it is fixed by the positioning bolts 22, it can provide a larger compression deformation. The positioning nuts and the pressure plate 20 can be installed according to actual conditions, and it has good adaptability to installation errors. The pressure plate 20 does not need to be disassembled when replaced, which can facilitate the rapid pulling out and replacement of the seal. At the same time, the abutment plate 15 is moved downward and abutted against the cover plate 21 under the power of the driving motor 5, which can further improve the sealing line of the cover plate 21 and avoid air leakage inside the sealing tube 3.

[0024] In this embodiment, Figure 4 , Figure 5 and Figure 6As shown, the top of the cover plate 21 is abutted with the abutment plate 15, the top of the abutment plate 15 is fixedly connected with the connecting plate 14, the top of the connecting plate 14 is fixedly connected with the vertical plate 26, the round rod 13 is opposite to the vertical plate 26, the round rod 13 extends into the vertical plate 26 and is slidably connected with the vertical plate 26, the bottom of the bottom plate 1 is fixedly connected with the support seat 2, the shape of the support seat 2 is T-shaped, the bottom of the support seat 2 is provided with anti-slip grooves, the material of the support seat 2 is stainless steel, the top of the cover plate 21 is fixedly connected with the pull ring 23, a rectangular groove is provided in the pull ring 23, the material of the pull ring 23 is rubber, and the pull ring 23 is arranged on the side of the pressure plate 20, a plurality of air leakage detection plates 17 are provided, and the plurality of air leakage detection plates 17 are evenly distributed on the side of the steel plate 19, and the shapes of the plurality of air leakage detection plates 17 are all elliptical, the shape of the cover plate 21 is circular, the cross-sectional area of ​​the cover plate 21 and the sealing cylinder 3 are the same, and the material of the cover plate 21 is stainless steel.

[0025] Among them, the pressure inside the sealing tube 3 can be detected by the pressure detector 24, and the pressure intensity can be displayed on the display screen 4. At the same time, the leakage detection plate 17 can be used to detect leakage between the cover plate 21 and the sealing tube 3. When leakage occurs, the alarm light 18 can flash, so that it can be discovered and repaired in time.

[0026] The working process of the present invention is as follows: when the sealing device designed by the present invention is working, the cover plate 21 is placed on the top of the sealing cylinder 3, and then the pressing plate 20 is abutted against the top of the cover plate 21, and the pressing plate 20 is fixed by rotating the positioning bolts 22, so that the pressing plate 20 and the cover plate 21 are tightly abutted together, and then the disc 6 and the toothed disc 8 are driven to rotate by the driving motor 5. Since the toothed disc 8 and the gear 12 are meshed, the gear 12 can be driven to circulate in the toothed disc 8, and then the round rod 13 is driven by the gear 12 to move in the vertical plate 26, so that the round rod 13 squeezes the vertical plate 26. Pressure can make the vertical plate 26, the connecting plate 14, the abutment plate 15 and the cover plate 21 tightly abut together, further improving the sealing performance inside the sealing tube 3. At the same time, the pressure inside the sealing tube 3 is detected by the pressure detector 24 and displayed on the display screen 4 to avoid leakage. At the same time, the gas between the cover plate 21 and the sealing tube 3 can be detected by the leakage detection plate 17. When leakage occurs, it can be discovered in time, and the alarm light 18 flashes to prompt people to discover it in time and carry out corresponding maintenance, thereby improving the sealing performance of the sealing device when in use.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing device, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected to a sealing cylinder (3), the outside of the sealing cylinder (3) is fixedly connected to a fixing sleeve (16), the top of the fixing sleeve (16) is fixedly connected to a steel plate (19), the top of the sealing cylinder (3) is abutted against a cover plate (21), a pressing plate (20) is provided on the top of the steel plate (19), the pressing plate (20) abuts against the cover plate (21), the pressing plate (20) is internally threadedly connected to a positioning bolt (22), the positioning bolt (22) ) extends into the steel plate (19); the top of the fixed sleeve (16) is fixedly connected to a gas leakage detection plate (17); the top of the gas leakage detection plate (17) is fixedly connected to an alarm light (18); the alarm light (18) is electrically connected to the gas leakage detection plate (17); the sealing tube (3) is fixedly connected to a pressure detector (24); the top of the bottom plate (1) is fixedly connected to a display screen (4); the display screen (4) is electrically connected to the pressure detector (24).

2. A sealing device according to claim 1, characterized in that: A driving motor (5) is installed on the top of the bottom plate (1); a disc (6) is fixedly connected to the output end of the driving motor (5); a groove (7) is provided in the disc (6); a toothed disc (8) is fixedly connected in the groove (7); and a gear (12) is rotatably connected in the groove (7).

3. A sealing device according to claim 2, characterized in that: The gear (12) is arranged on the side of the toothed disc (8), the gear (12) meshes with the toothed disc (8), a round rod (13) is fixedly connected to the side of the gear (12), and a collar (25) is sleeved on the outside of the round rod (13).

4. A sealing device according to claim 3, characterized in that: The top of the collar (25) is fixedly connected to a limiting rod (11), the top of the disc (6) is fixedly connected to a top plate (9), a through slot (10) is provided in the top plate (9), and the limiting rod (11) extends into the through slot (10) and is slidably connected to the through slot (10).

5. A sealing device according to claim 1, characterized in that: The top of the cover plate (21) is butted against a butt plate (15), the top of the butt plate (15) is fixedly connected to a connecting plate (14), and the top of the connecting plate (14) is fixedly connected to a vertical plate (26).

6. A sealing device according to claim 3, characterized in that: The round rod (13) is located opposite to the vertical plate (26); the round rod (13) extends into the vertical plate (26) and is slidably connected to the vertical plate (26).

7. A sealing device according to claim 1, characterized in that: The bottom of the base plate (1) is fixedly connected to a support seat (2); the support seat (2) is T-shaped; the bottom of the support seat (2) is provided with anti-slip grooves; and the material of the support seat (2) is stainless steel.

8. A sealing device according to claim 1, characterized in that: A pull ring (23) is fixedly connected to the top of the cover plate (21), a rectangular groove is provided in the pull ring (23), the pull ring (23) is made of rubber, and the pull ring (23) is arranged on the side of the pressure plate (20).

9. A sealing device according to claim 1, characterized in that: A plurality of the gas leakage detection plates (17) are provided, and the plurality of gas leakage detection plates (17) are evenly distributed at angles on the side of the steel plate (19), and the shape of the plurality of gas leakage detection plates (17) is an ellipse.

10. A sealing device according to claim 1, characterized in that: The cover plate (21) is circular in shape, the cross-sectional area of ​​the cover plate (21) and the sealing cylinder (3) are the same, and the material of the cover plate (21) is stainless steel.

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