Spring plug sealing device

Abstract

The utility model relates to the technical field of scraper driving oil cylinder sealing, and discloses a spring sealing device which comprises a scraper oil cylinder main body, an end sealing cover is arranged at the bottom end of the scraper oil cylinder main body, a driving main shaft is arranged on the scraper oil cylinder main body and penetrates through the middle of the end sealing cover, and a spring is arranged on the end sealing cover. The driving main shaft is provided with a main shaft sealing bin and a sealing ring spacer bush, a spring plug sealing ring is arranged in the main shaft sealing bin, the bottom of the sealing ring spacer bush is provided with a stable sealing assembly convenient to disassemble and used for sealing the outer side, and the spring plug sealing ring and the sealing ring spacer bush are both arranged on the driving main shaft in a sleeving mode. The driving main shaft and the end sealing cover can be effectively sealed through the spring plug sealing ring and the sealing ring spacer bush, the dustproof sealing ring is fixed through abutting of the abutting clamping ball and the abutting push plate, then the subsequent damaged dustproof sealing ring is more convenient to disassemble, and use of a user is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of scraper drive oil cylinder sealing, in particular to a wide plug sealing device. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. It has a simple structure and reliable operation. It can be used to realize the reciprocating motion drive device without the need for a reduction device, and there is no transmission gap and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines.

[0003] After searching, the authorized Chinese patent announcement number is CN 213928985 U. A sealing device for an oil cylinder includes an oil cylinder body, an oil cylinder piston is slidably arranged in the oil cylinder body, a clamp is arranged along the circumferential direction in the middle of the inner side wall of the oil cylinder piston, a plurality of piston sealing rings are arranged along the circumferential direction on the outer side wall of the clamp, a first rubber scraper and a second rubber scraper are tightly fitted with the outer side wall of the oil cylinder rod, and a sewage outlet is arranged on the dust cover. The utility model makes the use of the oil cylinder more convenient and efficient for the user, and can effectively avoid the deterioration of the stability and sealing of the oil cylinder caused by the oil cylinder rod absorbing dust for a long time, which easily causes the deterioration of the use effect of the oil cylinder.

[0004] The oil cylinder sealing device in the above patent still has certain shortcomings. The existing oil cylinder output shaft side is often sealed by a rubber gasket, but the rubber gasket is only mounted on the output shaft by adhesion. During long-term use, it is easy to loosen with the back and forth extension and contraction of the output shaft, which can easily lead to poor sealing of the output shaft end and cause some dust to enter the interior of the oil cylinder, causing certain damage to the interior of the oil cylinder. In addition, the rubber gasket that is adhered is also troublesome to replace, which is inconvenient for users. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a universal plug sealing device, which solves the problem that the side of the output shaft of the existing oil cylinder is often sealed by a rubber gasket, but the rubber gasket is only sleeved on the output shaft by adhesion. During long-term use, it is easy to become loose with the back and forth expansion and contraction of the output shaft, which can easily lead to poor sealing at the end of the output shaft and cause some dust to enter the inside of the oil cylinder, causing certain damage to the inside of the oil cylinder, and the rubber gasket that is adhered is also troublesome to replace, which is inconvenient for users.

[0006] The utility model provides the following technical solutions: a Variseal sealing device, comprising a scraper oil cylinder body, an end sealing cover is arranged at the bottom end of the scraper oil cylinder body, a driving spindle is arranged on the scraper oil cylinder body, the driving spindle passes through the middle of the end sealing cover, a scraper mounting head is arranged at the bottom end of the driving spindle, a spindle sealing compartment is arranged in the end sealing cover, the driving spindle passes through the middle of the spindle sealing compartment, a Variseal sealing ring is arranged in the spindle sealing compartment, a stopper is arranged at the top of the Variseal sealing ring, a sealing ring spacer is arranged below the Variseal sealing ring, a convenient and stable sealing component for outer sealing is arranged at the bottom of the sealing ring spacer, and the Variseal sealing ring and the sealing ring spacer are both sleeved on the driving spindle;

[0007] The easy-to-disassemble and stable sealing assembly includes a dustproof sealing ring arranged at the bottom opening of the main shaft sealing magazine, the dustproof sealing ring is sleeved on the driving main shaft, two groups of side wall grooves are symmetrically opened on the inner wall of the main shaft sealing magazine, two groups of interference grooves are symmetrically opened on both sides of the dustproof sealing ring, interference balls are arranged in the interference grooves, a sliding push plate is slidably arranged in the side wall groove, a side wall interference groove is opened on the side of the sliding push plate, a connecting rod is arranged on the side of the interference ball, the connecting rod passes through the middle part of the sliding push plate, a fixed connecting plate is arranged on the end of the connecting rod, a interference spring is arranged in the side wall groove, one end of the interference spring is connected to the inner wall of the side wall groove, and the other end of the interference spring is connected to the side of the sliding push plate.

[0008] Preferred technical solution 1: The side wall of the main shaft sealing chamber is symmetrically provided with two movable openings, the inner wall of the movable opening is provided with a driving screw hole, a resistance screw is rotatably inserted in the driving screw hole, and the end of the resistance screw is rotatably connected with a resistance push plate.

[0009] Preferred technical solution 2: Two groups of fixed slots are symmetrically provided on both sides of the dustproof sealing ring, and two fixed plug blocks are symmetrically provided on the end of the abutting push plate, and the ends of the fixed plug blocks are inserted into the fixed slots.

[0010] Preferred technical solution three: two limiting sliding grooves are symmetrically provided on both sides of the side wall groove, and two limiting sliding blocks are symmetrically provided on both ends of the sliding push plate.

[0011] This solution can make the sliding push plate slide more smoothly in the side wall groove.

[0012] Preferred technical solution four: the end of the abutment screw extends to the outside of the end sealing cover, and the end of the abutment screw is provided with a handle for easy rotation.

[0013] This solution can make it more convenient for users to rotate the interference screw.

[0014] Preferred technical solution five: the opening of the fixing slot is inclined outward.

[0015] This solution enables the resistance push plate to push the fixed plug-in block into the fixed slot more accurately and conveniently to resist it.

[0016] Compared with the prior art, the utility model provides a wide-plug sealing device, which has the following beneficial effects:

[0017] (1) The utility model provides a universal seal ring and a seal ring spacer on the outer side of the driving main shaft. The universal seal ring and the seal ring spacer can effectively seal between the driving main shaft and the end sealing cover, thereby preventing the material adhering to the driving main shaft from entering the scraper cylinder body through the end sealing cover. The dustproof seal ring provided in the easy-to-disassemble and stable sealing assembly is provided on the outermost side of the end sealing cover, thereby being able to first block the material adhering to the driving main shaft. In addition, a resistance ball and a resistance push plate are provided on the side of the dustproof seal ring. The resistance ball can, under the resistance of the side wall groove, and the resistance push plate can, under the resistance of the resistance screw, jointly resist and stabilize the side of the dustproof seal ring, so that the dustproof seal ring can be more firmly attached to the driving main shaft, thereby effectively blocking the material adhering to the surface of the driving main shaft. The dustproof seal ring is fixed by the resistance of the resistance ball and the resistance push plate, thereby making it easier to disassemble the dustproof seal ring that is subsequently damaged, and more convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 For the utility model Figure 1 A magnified view of the structure of the central spindle sealing chamber;

[0020] Figure 3 For the utility model Figure 2 A magnified view of the structure of the groove in the middle side wall;

[0021] Figure 4 For the utility model Figure 2 Enlarged view of the structure of the movable opening.

[0022] In the figure:

[0023] 1. Scraper cylinder body; 2. End sealing cover; 3. Driving spindle; 4. Scraper mounting head; 5. Spindle sealing chamber; 6. Pan seal ring; 7. Stopper; 8. Seal ring spacer; 9. Easy-to-disassemble and stable sealing assembly;

[0024] 901, dustproof sealing ring; 902, side wall groove; 903, resistance groove; 904, resistance card ball; 905, sliding push plate; 906, side wall resistance groove; 907, connecting rod; 908, fixed connecting plate; 909, resistance spring; 910, movable opening; 911, driving screw hole; 912, resistance screw; 913, resistance push plate; 914, fixed slot; 915, fixed plug. DETAILED DESCRIPTION

[0025] See also Figure 1-4

[0026] Embodiment 1: A Variseal sealing device comprises a scraper cylinder body 1, an end sealing cover 2 is arranged at the bottom end of the scraper cylinder body 1, a driving spindle 3 is arranged on the scraper cylinder body 1, the driving spindle 3 passes through the middle of the end sealing cover 2, a scraper mounting head 4 is arranged at the bottom end of the driving spindle 3, a spindle sealing compartment 5 is arranged in the end sealing cover 2, the driving spindle 3 passes through the middle of the spindle sealing compartment 5, a Variseal sealing ring 6 is arranged in the spindle sealing compartment 5, a stopper 7 is arranged at the top end of the Variseal sealing ring 6, a sealing ring spacer 8 is arranged below the Variseal sealing ring 6, a sealing ring spacer 8 is arranged at the bottom of the sealing ring spacer 8 for outer side sealing, and a convenient and stable sealing component 9 for outer side sealing is arranged, and the Variseal sealing ring 6 and the sealing ring spacer 8 are both sleeved on the driving spindle 3.

[0027] The easy-to-disassemble and stable sealing assembly 9 includes a dustproof sealing ring 901 arranged at the bottom opening of the main shaft sealing chamber 5, the dustproof sealing ring 901 is sleeved on the driving main shaft 3, and two groups of side wall grooves 902 are symmetrically opened on the inner wall of the main shaft sealing chamber 5, and two groups of interference grooves 903 are symmetrically opened on both sides of the dustproof sealing ring 901. Interference balls 904 are arranged in the interference grooves 903, and a sliding push plate 905 is slidably arranged in the side wall groove 902. A side wall interference groove 906 is opened on the side of the sliding push plate 905, and a connecting rod 907 is arranged on the side of the interference ball 904. The connecting rod 907 passes through the middle part of the sliding push plate 905, and a fixed connecting plate 908 is arranged on the end of the connecting rod 907. A interference spring 909 is arranged in the side wall groove 902, and one end of the interference spring 909 is connected to the inner wall of the side wall groove 902, and the other end of the interference spring 909 is connected to the side of the sliding push plate 905.

[0028] Two movable openings 910 are symmetrically provided on the side wall of the main shaft sealing chamber 5, and a driving screw hole 911 is provided on the inner wall of the movable opening 910. A resistance screw 912 is rotatably inserted in the driving screw hole 911, and a resistance push plate 913 is rotatably connected to the end of the resistance screw 912. Two groups of fixed slots 914 are symmetrically provided on both sides of the dustproof sealing ring 901, and two fixed plug blocks 915 are symmetrically provided at the end of the resistance push plate 913, and the end of the fixed plug block 915 is inserted into the fixed slot 914.

[0029] Embodiment 2: The difference between this embodiment and embodiment 1 lies in that two limiting sliding grooves are symmetrically provided on both sides of the side wall groove 902 , and two limiting sliding blocks are symmetrically provided on both ends of the sliding push plate 905 .

[0030] This allows the sliding push plate 905 to slide more smoothly in the side wall groove 902 .

[0031] Embodiment 3: The difference between this embodiment and embodiment 1 is that the end of the abutting screw 912 extends to the outside of the end sealing cover 2, and the end of the abutting screw 912 is provided with a handle for easy rotation.

[0032] This makes it more convenient for the user to rotate the interference screw 912.

[0033] Embodiment 4: The difference between this embodiment and embodiment 1 is that the opening of the fixing slot 914 is inclined outward.

[0034] The push plate 913 pushes the fixed insert block 915 to be inserted into the fixed slot 914 more accurately and conveniently to resist it.

[0035] In this embodiment, since the side of the existing oil cylinder output shaft is often sealed by a rubber gasket, but the rubber gasket is only mounted on the output shaft by adhesion, it is easy to become loose as the output shaft extends and retracts back and forth during long-term use, which can easily lead to a poor seal at the output shaft end and cause some dust to enter the interior of the oil cylinder, causing certain damage to the interior of the oil cylinder. In addition, the rubber gasket that is adhered is also troublesome to replace, which is inconvenient for users.

[0036] In summary, in a specific implementation, by arranging a universal seal ring 6 and a seal ring spacer 8 in the spindle sealing chamber 5, the driving spindle 3 can be inserted into the end sealing cover 2 for sealing, and by arranging a conveniently disassembled and stable sealing component 9 at the bottom end opening of the spindle sealing chamber 5, wherein the dustproof seal ring 901 in the conveniently disassembled and stable sealing component 9 is sleeved on the driving spindle 3, the dustproof seal ring 901 can seal the end of the driving spindle 3 passing through the spindle sealing chamber 5.

[0037] A side wall groove 902 is provided on the inner wall of the main shaft sealing chamber 5, a sliding push plate 905 is provided in the side wall groove 902, and a resistance ball 904 is provided on the side of the sliding push plate 905. The resistance ball 904 can be pushed by the resistance spring 909 on the sliding push plate 905 to be inserted into the resistance groove 903, thereby limiting the side resistance of the dustproof sealing ring 901, so that the dustproof sealing ring 901 can be more firmly mounted on the driving main shaft 3, and in order to make the dustproof sealing ring 901 be more stably mounted on the driving main shaft 3.

[0038] A movable opening 910 is also provided on the side of the opening of the spindle sealing chamber 5, and a resistance push plate 913 is provided in the movable opening 910. When the user pushes the resistance screw 912, the end of the resistance push plate 913 can be inserted into the fixed slot 914 on the side of the dustproof sealing ring 901 through the provided fixed plug block 915, so that the bottom side of the dustproof sealing ring 901 and the driving spindle 3 are stably resisted again, thereby avoiding the dustproof sealing ring 901 from moving with it when the driving spindle 3 moves back and forth, and it is more convenient to replace the dustproof sealing ring 901.

Claims

1. A Variseal seal device, comprising a scraper cylinder body (1), characterized in that: The bottom end of the scraper oil cylinder body (1) is provided with an end sealing cover (2), the scraper oil cylinder body (1) is provided with a driving spindle (3), the driving spindle (3) passes through the middle of the end sealing cover (2), the bottom end of the driving spindle (3) is provided with a scraper mounting head (4), the end sealing cover (2) is provided with a spindle sealing chamber (5), the driving spindle (3) passes through the middle of the spindle sealing chamber (5), a Variseal sealing ring (6) is provided in the spindle sealing chamber (5), a stopper (7) is provided at the top end of the Variseal sealing ring (6), a sealing ring spacer (8) is provided below the Variseal sealing ring (6), and a conveniently disassembled and stable sealing component (9) for outer side sealing is provided at the bottom of the sealing ring spacer (8), and the Variseal sealing ring (6) and the sealing ring spacer (8) are both sleeved on the driving spindle (3); The easy-to-disassemble and stable sealing assembly (9) comprises a dustproof sealing ring (901) arranged at the bottom opening of the main shaft sealing chamber (5), the dustproof sealing ring (901) is sleeved on the driving main shaft (3), two groups of side wall grooves (902) are symmetrically opened on the inner wall of the main shaft sealing chamber (5), two groups of resistance grooves (903) are symmetrically opened on both sides of the dustproof sealing ring (901), and resistance balls (904) are arranged in the resistance grooves (903), and a sliding push plate (905) is slidably arranged in the side wall grooves (902), and the sliding push plate A side wall resistance groove (906) is provided on the side of the resistance ball (904), a connecting rod (907) is provided on the side of the resistance ball (904), the connecting rod (907) passes through the middle of the sliding push plate (905), a fixed connecting plate (908) is provided at the end of the connecting rod (907), a resistance spring (909) is provided in the side wall groove (902), one end of the resistance spring (909) is connected to the inner wall of the side wall groove (902), and the other end of the resistance spring (909) is connected to the side of the sliding push plate (905).

2. A Variseal seal device according to claim 1, characterized in that: The side wall of the main shaft sealing chamber (5) is symmetrically provided with two movable openings (910), the inner wall of the movable opening (910) is provided with a driving screw hole (911), a resisting screw rod (912) is rotatably inserted into the driving screw hole (911), and the end of the resisting screw rod (912) is rotatably connected with a resisting push plate (913).

3. A Variseal seal device according to claim 2, characterized in that: Two groups of fixed slots (914) are symmetrically provided on both sides of the dustproof sealing ring (901), and two fixed plug blocks (915) are symmetrically provided at the end of the abutting push plate (913), and the ends of the fixed plug blocks (915) are inserted into the fixed slots (914).

4. A Variseal seal device according to claim 3, characterized in that: Two limiting sliding grooves are symmetrically provided on both sides of the side wall groove (902), and two limiting sliding blocks are symmetrically provided on both ends of the sliding push plate (905).

5. A Variseal seal device according to claim 4, characterized in that: The end of the abutment screw (912) extends to the outside of the end sealing cover (2), and the end of the abutment screw (912) is provided with a handle for easy rotation.

6. A Variseal seal device according to claim 5, characterized in that: The opening of the fixing slot (914) is inclined outwards.

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