A sealing device

Abstract

The present invention discloses a sealing device, which includes: a sealing cap plate for installing a pipe to be sealed; a plurality of locking mechanisms, which are arranged on the sealing cap plate and are used to abut against the tank car mouth so that the sealing cap plate and the tank car mouth are tightly sealed and pressed; and a rotatable sealing mechanism, which is arranged on the sealing cap plate and is used to connect with the pipe to be sealed so that the sealing cap plate can rotate around the pipe to be sealed. The sealing device of the present invention can rotate around the pipe to be sealed, so that during the sealing and locking process, if the tank car mouth has an additional structure that protrudes into the tank car mouth, the locking mechanism can avoid the additional structure that protrudes into the tank car mouth, that is, the present invention can adjust the position of the locking mechanism at the tank car mouth, thereby achieving the effect of sealing and pressing the tank car mouth, thereby avoiding environmental pollution caused by polluted atmosphere.

Description

Technical Field

[0001] The present invention relates to the technical field of petroleum or chemical transportation equipment, and in particular to a sealing device. Background Art

[0002] To control air pollutant emissions and improve the atmospheric environment, oil storage and transportation depots require the use of closed loading cranes for train loading. Currently, commonly used cranes are divided into top-loading cranes and bottom-loading cranes. Most tank trucks use top-loading cranes for loading and unloading oil. The key to sealing closed loading cranes is the tight compression between the sealing cap and the train tank opening.

[0003] At present, the sealing caps used in the common train closed loading crane pipes on the market are mostly inner compression devices. However, when such devices encounter special tank car mouths, they cannot achieve the effect of sealing and tightening. For example, when there is an additional structure such as an inspection escalator inside the tank car mouth that extends into the tank car mouth, the compression device cannot achieve the effect of locking the sealing cap, thereby causing volatile, flammable, and explosive oils or chemicals to leak.

[0004] Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a sealing device to solve the problem that when the existing closed loading crane pipe has an additional structure protruding into the tank car mouth, the clamping device cannot achieve the sealing and clamping effect.

[0006] The technical solutions of the present invention are as follows:

[0007] A sealing device, comprising:

[0008] A sealing cap cover plate for installing the pipe to be sealed;

[0009] A plurality of locking mechanisms are provided on the sealing cap cover plate and are used to abut against the tank car opening to seal and press the sealing cap cover plate against the tank car opening; and

[0010] The rotatable sealing mechanism is arranged on the sealing cap plate and is used to be connected with the pipe to be sealed so that the sealing cap plate can rotate around the pipe to be sealed.

[0011] In a further embodiment of the present invention, the rotatable sealing mechanism comprises:

[0012] An outer ring is provided on the sealing cap cover plate; and

[0013] The inner ring is arranged on the outer ring and is rotatably connected to the outer ring, and is used to be connected to the pipe to be sealed.

[0014] According to a further configuration of the present invention, the outer ring includes a first outer ring and a second outer ring, the first outer ring is arranged on the sealing cap cover plate, and the second outer ring is arranged on the first outer ring; the surface of the inner ring is an arc surface, the first outer ring is provided with a first inner concave surface adapted to the arc surface, the second outer ring is provided with a second inner concave surface adapted to the arc surface, and the inner ring is provided on the first outer ring and the second outer ring and is rotatably connected to the first outer ring and the second outer ring.

[0015] According to a further configuration of the present invention, a first groove is provided on the inner wall of the outer ring, and a second groove is provided on the outer wall of the inner ring at a position corresponding to the first groove. The first groove and the second groove form an accommodating space, and balls are provided in the accommodating space. The inner ring is rollingly connected to the balls.

[0016] According to a further configuration of the present invention, the sealing cap cover plate is in an annular shape, and a plurality of the locking mechanisms are arranged on the sealing cap cover plate at intervals along the circumference of the sealing cap cover plate.

[0017] According to a further aspect of the present invention, the locking mechanism comprises:

[0018] A cylinder assembly is provided on the sealing cap cover plate;

[0019] a hinged member disposed on the cylinder assembly; and

[0020] A locking assembly is arranged on the sealing cap cover and connected to the hinged member.

[0021] According to a further aspect of the present invention, the cylinder assembly comprises:

[0022] A first mounting seat is provided on the sealing cap cover plate; and

[0023] The cylinder is arranged on the first mounting seat. The cylinder is provided with a cylinder rod. The cylinder rod passes through the sealing cap cover plate and is connected to the hinged member.

[0024] According to a further configuration of the present invention, the cylinder rod is directly connected to the hinged member or is connected to the hinged member via an extension rod.

[0025] According to a further aspect of the present invention, the locking assembly comprises:

[0026] A second mounting seat is provided at the bottom of the sealing cap cover plate;

[0027] a first connecting rod connected to the hinge;

[0028] a second connecting rod, rotatably connected to the second mounting seat and slidably connected to an end of the first connecting rod away from the hinge;

[0029] a claw, rotatably connected to the second connecting rod; and

[0030] The third connecting rod has one end rotatably connected to the second mounting seat, and the other end rotatably connected to the claw.

[0031] According to a further configuration of the present invention, the cylinder assembly further includes a bushing, and the cylinder rod is inserted into the bushing.

[0032] According to a further configuration of the present invention, a slider is provided at one end where the first connecting rod and the second connecting rod are slidingly connected, and a sliding groove adapted to the slider is provided on the second connecting rod, and the slider can slide on the sliding groove.

[0033] According to a further configuration of the present invention, the sealing device comprises a first sealing ring, and the first sealing ring is arranged between the second outer ring and the inner ring.

[0034] According to a further configuration of the present invention, the sealing device includes a second sealing ring, and the second sealing ring is arranged between the first outer ring and the sealing cap cover plate.

[0035] According to a further configuration of the present invention, the sealing device includes a third sealing ring, and the third sealing ring is arranged at the bottom of the sealing cap cover plate.

[0036] According to a further configuration of the present invention, the sealing device includes a fourth sealing ring, and the fourth sealing ring is arranged between the outer ring and the inner ring.

[0037] According to a further configuration of the present invention, the sealing device also includes a pin shaft, and the cylinder rod and the hinge, the first connecting rod and the hinge, the second connecting rod, the second connecting rod and the second mounting seat, the claw, and the third connecting rod and the second mounting seat, the claw are all rotatably connected by the pin shaft.

[0038] The present invention provides a sealing device, which includes: a sealing cap plate for installing a pipe to be sealed; a plurality of locking mechanisms, which are arranged on the sealing cap plate and are used to abut against the tank car mouth so that the sealing cap plate and the tank car mouth are tightly sealed and pressed; and a rotatable sealing mechanism, which is arranged on the sealing cap plate and is used to connect with the pipe to be sealed so that the sealing cap plate can rotate around the pipe to be sealed. The sealing device in the present invention can rotate around the pipe to be sealed, so that during the sealing and locking process, if the tank car mouth has an additional structure that protrudes into the tank car mouth, the locking mechanism can avoid the additional structure that protrudes into the tank car mouth, that is, the present invention can adjust the position of the locking mechanism at the tank car mouth, thereby achieving the effect of sealing and pressing the tank car mouth, thereby avoiding environmental pollution caused by polluted atmosphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary personnel in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0040] Figure 1 It is a schematic diagram of the overall structure of a sealing device in the present invention.

[0041] Figure 2 It is a partial structural schematic diagram of a sealing device in the present invention.

[0042] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0043] Figure 4 This is a schematic diagram of the installation of a sealing device and a tank car mouth in the present invention.

[0044] Figure 5 It is a schematic diagram of the partial structure of the sealing device in another embodiment.

[0045] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0046] 1. The marks in the accompanying drawings are: 1. Sealing cap cover plate; 2. Locking mechanism; 21. Cylinder assembly; 211. First mounting seat; 212. Cylinder; 213. Cylinder rod; 2131. Extension rod; 214. Bushing; 22. Hinge; 23. Locking assembly; 231. Second mounting seat; 232. First connecting rod; 233. Second connecting rod; 234. Claw; 235. Third connecting rod; 3. Sealing mechanism; 31. Outer ring; 311. First outer ring; 3111. First inner concave surface; 312. Second outer ring; 3121. Second inner concave surface; 313. First groove; 32. Inner ring; 321. Second groove; 322. Arc surface; 333. Ball; 4. First sealing ring; 5. Second sealing ring; 6. Third sealing ring; 7. Pin; 8. Crane pipe drop pipe; 9. Grooved car mouth; 10. Additional structure; 11. Fourth sealing ring. DETAILED DESCRIPTION

[0047] Because the seal between the sealing cap and the tank car port (train filling port, truck filling port, etc.) is internally compressed, operators cannot observe the internal locking status, thus failing to achieve the desired effect. In addition, the sealing caps commonly used in closed loading cranes on the market mostly use internal compression devices, which cannot achieve the required sealing effect when encountering the special tank car tank port.

[0048] The present invention provides a sealing device, which is installed on a pipe to be sealed. For example, the pipe to be sealed can be a tubular structure such as a crane pipe drop pipe. The present invention is described by taking the installation of the sealing device on the crane pipe drop pipe as an example. The sealing device in the present invention can rotate around the crane pipe drop pipe, so that in the process of sealing and locking, if the tank car mouth has an additional structure that protrudes into the tank car mouth, the locking mechanism can avoid the additional structure that protrudes into the tank car mouth, that is, the present invention can adjust the orientation of the locking mechanism at the tank car mouth, thereby achieving the effect of sealing and pressing the tank car mouth. In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0049] In the embodiments and patent claims, unless otherwise specified, "a", "an" and "the" may refer to a single or plural number.

[0050] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0051] Please also see Figures 1 to 4 , the present invention provides a preferred embodiment of a sealing device.

[0052] See also Figure 1 and Figure 4 The present invention provides a sealing device, which is installed on a sealing crane pipe drop pipe 8, wherein the sealing device includes a sealing cap plate 1, a locking mechanism 2, and a sealing mechanism 3. Specifically, the center position of the sealing cap plate 1 is hollowed out, that is, it has a through hole, the crane pipe drop pipe 8 passes through the through hole and is provided on the sealing cap plate 1, and extends into the tank car mouth 9. The locking mechanism 2 is provided in several groups and is provided on the sealing cap plate 1, and is used to abut against the tank car mouth 9 so that the sealing cap plate 1 and the tank car mouth 9 are tightly sealed. The sealing mechanism 3 is rotatable and provided on the sealing cap plate 1, and is used to connect with the crane pipe drop pipe 8, so that the sealing cap plate 1 can rotate around the crane pipe drop pipe 8.

[0053] During the process of sealing the tank car mouth 9, the crane pipe drop pipe 8 is connected to the sealing mechanism 3, and the locking mechanism 2 is extended into the tank car mouth 9. Since the sealing mechanism 3 is rotatable and is arranged on the sealing cap cover plate 1, the position of the locking mechanism 2 at the tank car mouth 9 can be adjusted by rotating the sealing cap cover plate 1. In this way, if the tank car mouth 9 has an additional structure 10 that extends into the tank car mouth 9, the locking mechanism 2 can avoid the additional structure 10 that extends into the tank car mouth 9. When the locking mechanism 2 is rotated to a position where no interference occurs, several locking mechanisms 2 are tightly abutted against the inner wall of the tank car mouth 9 to make the sealing cap cover plate 1 and the tank car mouth 9 tightly sealed and pressed. Therefore, the sealing device in the present invention can rotate around the crane pipe vertical pipe 8. Therefore, during the sealing and locking process, if the tank car mouth 9 is encountered with an additional structure 10 that protrudes into the tank car mouth 9, the locking mechanism 2 can avoid the additional structure 10 that protrudes into the tank car mouth 9, that is, the operator can adjust the position of the locking mechanism 2 at the tank car mouth 9 without being able to observe the inside of the tank car mouth 9, thereby achieving the effect of sealing and pressing the tank car mouth 9, avoiding environmental pollution caused by polluted atmosphere.

[0054] See also Figure 2 、 Figure 3 and Figure 4 In a further embodiment, the sealing mechanism 3 includes an outer ring 31 and an inner ring 32. Specifically, the outer ring 31 is disposed on the sealing cap plate 1, and the inner ring 32 is disposed on the outer ring 31 and rotatably connected to the outer ring 31, and is used to connect to the crane drop pipe 8. When the position of the locking mechanism 2 needs to be adjusted, the sealing cap plate 1 is rotated, thereby rotating the sealing cap plate 1 and the locking mechanism 2 disposed on the sealing cap plate 1 around the crane drop pipe 8 connected to the inner ring 32, thereby adjusting the position of the locking mechanism 2 on the tank car mouth 9.

[0055] See also Figure 1 、 Figure 2 and Figure 3Furthermore, the outer ring 31 includes a first outer ring 311 and a second outer ring 312. The first outer ring 311 is disposed on the sealing cap cover plate 1, and the second outer ring 312 is disposed on the first outer ring 311. The inner ring 32 has a curved surface 322. The first outer ring 311 is provided with a first inner concave surface 3111 that matches the curved surface 322, and the second outer ring 312 is provided with a second inner concave surface 3121 that matches the curved surface 322. The inner ring 32 is disposed on the first outer ring 311 and the second outer ring 312 and is rotatably connected to the first outer ring 311 and the second outer ring 312. During installation, the first outer ring 311 and the second outer ring 312 are installed on the inner ring 32 in sequence so that the inner ring 32 is located inside the first outer ring 311 and the second outer ring 312. Therefore, the first outer ring 311 and the second outer ring 312 have a limiting effect on the inner ring 32, and the inner ring 32 is in surface contact with the first outer ring 311 and the second outer ring 312 (the arc surface 322 contacts the first inner concave surface 3111 and the second inner concave surface 3121 respectively), so that the first outer ring 311 can rotate around the center of the inner ring 32 at multiple angles, thereby allowing the sealing cap cover plate 1 connected to the outer ring 31 and the locking mechanism 2 connected to the sealing cap cover plate 1 to rotate around the crane pipe 8 at multiple angles, so that the crane pipe 8 can also achieve multiple angles of rotation on the first outer ring 311 and the second outer ring 312 through the inner ring 32.

[0056] See also Figure 5 and Figure 6 In another embodiment, a first groove 313 is provided on the inner wall of the outer ring 31, and a second groove 321 is provided on the outer wall of the inner ring 32 at a position corresponding to the first groove 313. The first groove 313 and the second groove 321 form an accommodating space, and a ball 333 is provided in the accommodating space. The inner ring 32 realizes a rolling connection with the outer ring 31 through the ball 333. Specifically, a first groove 313 is provided on one side of the outer ring 31 close to the inner ring 32, and a second groove 321 is provided on one side of the inner ring 32 close to the outer ring 31, so that the first groove 313 and the second groove 321 form a receiving space capable of installing a plurality of balls 333, wherein the balls 333 may be steel balls. In addition, the inner ring 32 is located inside the outer ring 31, so that the outer ring 31 has a limiting effect on the inner ring 32, so that the outer ring 31 can rotate around the center of the inner ring 32, thereby allowing the sealing cap plate 1 connected to the outer ring 31 and the locking mechanism 2 connected to the sealing cap plate 1 to rotate around the crane pipe 8. Please refer to Figure 1 and Figure 4In a further implementation of an embodiment, the sealing cap cover plate 1 is in a circular ring shape, and a plurality of the locking mechanisms 2 are arranged on the sealing cap cover plate 1 at intervals along the circumference of the sealing cap cover plate 1. Specifically, the locking mechanisms 2 are generally arranged in 3 to 4 groups, and are evenly spaced on the sealing cap cover plate 1 along the circumference of the sealing cap cover plate 1. In some implementations, there are 3 groups of the locking mechanisms 2, which are evenly distributed on the sealing cap cover plate 1, that is, the angle between two adjacent locking mechanisms 2 is 120°. When all the locking mechanisms 2 are tightly abutted against the inner wall of the tank car mouth 9, the sealing cap cover plate 1 can be tightly pressed against the tank car mouth 9.

[0057] See also Figure 2 、 Figure 3 and Figure 4 In a further embodiment of the present invention, the locking mechanism 2 includes a cylinder assembly 21, a hinge 22, and a locking assembly 23. Specifically, the cylinder assembly 21 is disposed on the sealing cap cover plate 1, the hinge 22 is disposed on the cylinder assembly 21, and the locking assembly 23 is disposed on the sealing cap cover plate 1 and connected to the hinge 22. When the sealing cap cover plate 1 is pressed against the tank opening 9, the cylinder assembly 21 drives the locking assembly 23 connected to the hinge 22 to swing, so that the locking assembly 23 abuts against the inner wall of the tank opening 9, thereby achieving the purpose of locking.

[0058] See also Figure 1 、 Figure 2 and Figure 3 In a further implementation of an embodiment, the cylinder assembly 21 includes a first mounting seat 211, a cylinder 212, a cylinder rod 213 and a bushing 214, wherein the first mounting seat 211 is a square mounting seat, and the first mounting seat 211 is arranged on the sealing cap cover plate 1, and the cylinder 212 is arranged on the sealing cap cover plate 1 through the first mounting seat 211, wherein the cylinder rod 213 is arranged on the cylinder 212, and the cylinder rod 213 is passed through the sealing cap cover plate 1 and is connected to the hinge 22, wherein the bushing 214 is arranged on the sealing cap cover plate 1, and the cylinder rod 213 is passed through the bushing 214, and the bushing 214 has a protective effect on the cylinder rod 213, and can extend the service life of the cylinder rod 213. During the process of the cylinder assembly 21 driving the locking assembly 23 to lock the tank car mouth 9, the cylinder 212 is inhaled, so that the cylinder rod 213 set on the cylinder 212 retracts upward, so that the locking assembly 23 connected to the hinge 22 swings, and then tightly abuts against the tank car mouth 9, so as to realize the compression of the sealing cap cover plate 1 and the tank car mouth 9.

[0059] See also Figure 5 and Figure 6In another embodiment, the cylinder assembly 21 includes a first mounting seat 211, a cylinder 212, a cylinder rod 213 and a bushing 214, wherein the first mounting seat 211 is a U-shaped mounting seat, which is arranged on the sealing cap cover plate 1, and the cylinder 212 is arranged on the sealing cap cover plate 1 through the first mounting seat 211, wherein a cylinder rod 213 is provided on the cylinder 212, and an extension rod 2131 is connected to the cylinder rod 213, and the cylinder rod 213 is connected to the hinge 22 through the extension rod 2131, and the extension rod 2131 is passed through the sealing cap cover plate 1 and connected to the hinge 22, wherein the bushing 214 is provided on the sealing cap cover plate 1, and the extension rod 2131 is passed through the bushing 214. When the cylinder assembly 21 drives the locking assembly 23 to lock the tank opening 9, air is introduced into the cylinder 212, causing the cylinder rod 213 provided on the cylinder 212 to retract upward, thereby causing the locking assembly 23 connected to the hinge 22 to swing and then tightly abut against the tank opening 9, thereby achieving compression of the sealing cap cover plate 1 against the tank opening 9. It should be noted that the number of extension rods 2131 can be increased according to actual conditions. This embodiment is described by taking one extension rod 2131 provided on the cylinder rod 213 as an example.

[0060] See also Figure 2 and Figure 3In a further implementation of one embodiment, the locking assembly 23 includes a second mounting seat 231, a first connecting rod 232, a second connecting rod 233, a claw 234, and a third connecting rod 235. Specifically, the second mounting seat 231 is an L-shaped mounting seat, which is arranged at the bottom of the sealing cap cover plate 1. One end of the first connecting rod 232 is connected to the end of the cylinder rod 213 away from the hinge 22. The second connecting rod 233 is arranged on the second mounting seat 231 and is rotatably connected to the second mounting seat 231, and is slidably connected to the end of the first connecting rod 232 away from the hinge 22. The claw 234 is rotatably connected to the second connecting rod 233. The third connecting rod 235 is arranged on the second mounting seat 231, and one end of the third connecting rod 235 is rotatably connected to the second mounting seat 231, and the other end is rotatably connected to the claw 234. Furthermore, a slider (not shown) is provided at one end of the first connecting rod 232 that is slidably connected to the second connecting rod 233. The second connecting rod 233 is provided with a sliding groove that is compatible with the slider, and the slider can slide on the sliding groove. The cylinder rod 213, the first connecting rod 232, the second connecting rod 233, the third connecting rod 235, the claw 234, and the slider constitute a crank slider motion mechanism. It should be noted that the sliding groove is a T-slot that provides space for the slider and provides space for the first connecting rod 232 to move, allowing the first connecting rod 232 to slide on the second connecting rod 233 via the slider.

[0061] During specific implementation, the locking mechanism 2 extends into the tank car mouth 9 until the sealing cap cover plate 1 presses against the tank car mouth 9. At this time, the air cylinder 212 is connected to the air source, opening the directional control valve, and the cylinder 212 retracts upward, causing the cylinder rod 213 to move upward, thereby driving the first connecting rod 232 to swing leftward, and causing the first connecting rod 232 to slide on the second connecting rod 233, thereby driving the second connecting rod 233 to swing upward, thereby driving the claw 234 to move leftward to a clamped state, and at the same time abut against the inner wall of the tank car mouth 9 to clamp the inner side of the tank car mouth 9. It should be noted that the multiple locking mechanisms 2 provided on the sealing cap cover plate 1 operate simultaneously, that is, the claws 234 of the multiple locking mechanisms 2 can abut against the inner wall of the tank car mouth 9 at the same time, thereby pressing the sealing cap cover plate 1 against the tank car mouth 9, thereby achieving the purpose of sealing and locking.

[0062] See also Figure 2In a further implementation of an embodiment, the sealing device also includes a pin shaft 7, and the cylinder rod 213 and the hinge 22, the first connecting rod 232 and the hinge 22, the second connecting rod 233, the second connecting rod 233 and the second mounting seat 231 and the claw 234, and the third connecting rod 235 and the second mounting seat 231 and the claw 234 are all rotatably connected through the pin shaft 7.

[0063] See also Figure 1 and Figure 2 In a further implementation of an embodiment, the sealing device includes a first sealing ring 4, a second sealing ring 5 and a third sealing ring 6. The first sealing ring 4 is arranged between the second outer ring 312 and the inner ring 32, the second sealing ring 5 is arranged between the first outer ring 311 and the sealing cap cover plate 1, and the third sealing ring 6 is arranged at the bottom of the sealing cap cover plate 1. The first sealing ring 4 and the second sealing ring 5 can be O-rings. The first sealing ring 4 is arranged between the second outer ring 312 and the inner ring 32 to seal the gap between the second outer ring 312 and the inner ring 32 to prevent leakage of oil or chemicals. The third sealing ring 6 is the sealing ring of the sealing cap cover plate 1. When the sealing cap cover plate 1 is pressed against the tank car port 9, the second sealing ring 5 can enhance the sealing effect of the sealing cap cover plate 1.

[0064] See also Figure 5 and Figure 6 In another embodiment, when the outer ring 31 and the inner ring 32 are rollingly connected by the balls 333, a fourth sealing ring 11 is provided between the outer ring 31 and the inner ring 32 to seal the gap between the outer ring 31 and the inner ring 32 to prevent leakage of oil or chemicals.

[0065] In summary, the present invention provides a sealing device, which includes: a sealing cap plate for installing a pipe to be sealed; a plurality of locking mechanisms, which are arranged on the sealing cap plate and are used to abut against the tank car mouth so that the sealing cap plate and the tank car mouth are tightly sealed and pressed; and a rotatable sealing mechanism, which is arranged on the sealing cap plate and is used to connect with the pipe to be sealed so that the sealing cap plate can rotate around the pipe to be sealed. The sealing device in the present invention can rotate around the pipe to be sealed, so that during the sealing and locking process, if the tank car mouth has an additional structure that protrudes into the tank car mouth, the locking mechanism can avoid the additional structure that protrudes into the tank car mouth, that is, the present invention can adjust the position of the locking mechanism at the tank car mouth, thereby achieving the effect of sealing and pressing the tank car mouth, and avoiding environmental pollution caused by polluted atmosphere.

[0066] It should be understood that the application of the present invention is not limited to the above examples. For those skilled in the art, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A sealing device, characterized in that: include: A sealing cap cover plate for installing the pipe to be sealed; A plurality of locking mechanisms are provided on the sealing cap cover plate and are used to abut against the tank car opening to seal and press the sealing cap cover plate against the tank car opening; and a rotatable sealing mechanism, provided on the sealing cap cover plate and used to be connected to the pipe to be sealed so that the sealing cap cover plate can rotate around the pipe to be sealed; The rotatable sealing mechanism comprises: An outer ring is provided on the sealing cap cover plate; and an inner ring is provided on the outer ring and rotatably connected to the outer ring and used to be connected to the tube to be sealed; the outer ring includes a first outer ring and a second outer ring, the first outer ring is provided on the sealing cap cover plate, and the second outer ring is provided on the first outer ring; the surface of the inner ring is an arc surface, the first outer ring is provided with a first inner concave surface adapted to the arc surface, and the second outer ring is provided with a second inner concave surface adapted to the arc surface, the inner ring is provided on the first outer ring and the second outer ring and rotatably connected to the first outer ring and the second outer ring; It also includes a first sealing ring, a second sealing ring and a third sealing ring, wherein the first sealing ring is arranged between the second outer ring and the inner ring, the second sealing ring is arranged between the first outer ring and the sealing cap cover plate, and the third sealing ring is arranged at the bottom of the sealing cap cover plate; The locking mechanism comprises: A cylinder assembly is provided on the sealing cap cover plate; a hinged member disposed on the cylinder assembly; and A locking assembly, disposed on the sealing cap cover and connected to the hinged member; The cylinder assembly comprises: A cylinder, wherein a cylinder rod is provided on the cylinder; The locking assembly comprises: A second mounting seat is provided at the bottom of the sealing cap cover plate; a first connecting rod connected to the hinge; a second connecting rod, rotatably connected to the second mounting seat and slidably connected to an end of the first connecting rod away from the hinge; a claw, rotatably connected to the second connecting rod; and a third connecting rod, one end of which is rotatably connected to the second mounting base, and the other end of which is rotatably connected to the claw; When the cylinder assembly drives the locking assembly to lock the slot car mouth, the cylinder is inhaled, causing the cylinder rod to retract upward, and the locking assembly connected to the hinged part swings, and then tightly abuts against the slot car mouth.

2. The sealing device according to claim 1, characterized in that A first groove is provided on the inner wall of the outer ring, and a second groove is provided on the outer wall of the inner ring at a position corresponding to the first groove. The first groove and the second groove form an accommodating space, and a ball is provided in the accommodating space.

3. The sealing device according to claim 1, characterized in that The sealing cap cover plate is annular, and a plurality of locking mechanisms are arranged on the sealing cap cover plate at intervals along the circumference of the sealing cap cover plate.

4. The sealing device according to claim 1, characterized in that The cylinder assembly further comprises: A first mounting seat is provided on the sealing cap cover plate; The cylinder is arranged on the first mounting seat, and the cylinder rod is passed through the sealing cap cover plate and connected to the hinged member.

5. The sealing device according to claim 4, characterized in that The cylinder assembly further includes a bushing, and the cylinder rod is inserted into the bushing.

6. The sealing device according to claim 1, characterized in that A slider is provided at one end of the first connecting rod and the second connecting rod which are slidably connected. A sliding groove adapted to the slider is provided on the second connecting rod, and the slider can slide on the sliding groove.

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