Hatch cover with high sealing performance

Abstract

The utility model discloses a high-sealing hatch cover. Relates to the technical field of ship outfitting parts. Comprising a base and a cover plate, the top of the base is covered with the cover plate, the cover plate and the base are locked through bolts, a first annular groove and a second annular groove are formed in the end face of the top of the base, a sealing ring is arranged in the first groove, a grinding block is arranged in the second groove, and the sealing ring is arranged in the first groove. A threaded hole is formed in the groove bottom of the second groove, a counterbore is formed in the top of the grinding block, a screw rod is arranged in the counterbore in a matched mode, the top of the screw rod is flush with the top of the grinding block, and the bottom of the screw rod penetrates through the counterbore and is arranged in the threaded hole in a matched and screwed mode. The grinding block can rotate in the axial direction of the screw and is attached to the top of the sealing ring. Through the polishing effect of the polishing block on the sealing ring, an aging layer or a corrosion layer on the surface of the sealing ring is reliably removed, the service life of the sealing ring is prolonged, and reliable sealing between the cover plate and the base is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship outfitting, in particular to a high-sealing hatch cover. BACKGROUND

[0002] The hatch cover belongs to the opening and closing equipment of the ship, has the functions of sealing, waterproofing, rust prevention, etc., and should not only ensure that waves and rainwater cannot flow into the cargo hold, but also have a good sealing device. At the same time, the hatch cover should be opened and closed quickly and easily operated, which can not only ensure the safety of navigation, but also shorten the time of the ship in port as much as possible.

[0003] In the Chinese patent document with the publication number CN217301572U, a sealing ring and a hatch cover using the same are disclosed, and specifically a sealing ring body for being placed in an annular sealing groove of a hatch cover is disclosed, the sealing ring body has an annular cavity, and a sealing surface for sealing cooperation with an annular protrusion on a deck is arranged on the sealing ring body, the sealing surface is used to sink into the annular sealing groove; the sealing ring body is further provided with an air hole communicating the annular cavity and the outside of the sealing ring body; when the sealing surface and the annular protrusion are close to each other, the sealing surface is deformed by sinking, the gas in the annular cavity is discharged to the outside of the sealing ring body through the air hole, when the sealing surface and the annular protrusion are away from each other, the sealing surface is deformed by resetting, and the gas outside the sealing ring body enters the annular cavity under the action of the internal and external pressure difference. The gas accumulated in the annular cavity is avoided, which is beneficial to the compression deformation of the sealing ring body, a predetermined compression amount is achieved, and the sealing surface better wraps the annular protrusion, thereby forming a good sealing effect.

[0004] However, in the above patent, the surface of the sealing ring body will gradually age after a long time of use, especially when the ship is sailing on the sea, seawater will corrode the sealing ring body, thereby reducing the sealing performance of the sealing ring body. Content of the utility model

[0005] In order to overcome the shortcomings of the prior art, the present application provides a high-sealing hatch cover.

[0006] The present application adopts the following technical scheme: a high-sealing hatch cover, comprising a base and a cover plate, the cover plate is arranged on the top of the base, the cover plate and the base are locked by bolts, the top end face of the base is provided with a first groove and a second groove which are both annular, a sealing ring is arranged in the first groove, the second groove is located outside the first groove, a grinding block is arranged in the second groove, a threaded hole is arranged in the groove bottom of the second groove, a countersunk hole is arranged in the top of the grinding block, a screw rod is adaptively arranged in the countersunk hole, the top of the screw rod is flush with the top of the grinding block, the bottom of the screw rod penetrates through the countersunk hole and is adaptively screwed in the threaded hole, and the grinding block can rotate along the axial direction of the screw rod and is in close contact with the top of the sealing ring.

[0007] Optionally, the thickness of the sealing ring is greater than the depth of the first groove, the grinding block is adapted to be arranged inside the second groove, and the length of the grinding block is greater than the width of the sealing ring.

[0008] Optionally, the bottom of the second groove is provided with a first sliding groove in the form of a ring, the top of the first sliding groove is communicated with the second groove, the first sliding groove penetrates the threaded hole along the radial direction, the upper portion of the screw rod is provided with a threaded portion, and the lower portion of the screw rod is provided with a smooth surface portion; when the smooth surface portion is rotated upwardly into the threaded hole, the grinding block is located outside the second groove, and the smooth surface portion can be slid into the first sliding groove.

[0009] Optionally, the width of the first sliding groove is greater than the inner diameter of the threaded hole, the threaded portion is connected with the threaded hole through threads, and the smooth surface portion is in close contact with the threaded hole.

[0010] Optionally, the lower portion of the first sliding groove is provided with a second sliding groove in the form of a ring, the width of the first sliding groove is greater than the width of the first sliding groove, the bottom of the screw rod is provided with a limiting plate, and the limiting plate can slide or rotate in the second sliding groove.

[0011] Optionally, when the top of the limiting plate is in close contact with the connection between the second sliding groove and the first sliding groove, the top of the screw rod is located above the grinding block, and the grinding block is located above the second groove.

[0012] Compared with the prior art, the application has the following beneficial effects:

[0013] 1. By reasonably setting the depths of the first groove and the second groove, it is ensured that the sealing ring can reliably be in close contact with the cover plate, a reliable sealing effect is achieved, and at the same time, it is ensured that the grinding block is completely located in the second groove when in a sealing state, and the sealing operation of the sealing ring is not affected.

[0014] 2. By the limiting effect of the limiting plate on the screw rod, it is ensured that when the grinding block is located outside the second groove, the bottom of the screw rod can still be located in the second groove, so that the grinding block can rotate around the axis of the second groove and realize the grinding effect on the sealing ring, thereby removing the aging layer or corrosion layer on the surface of the sealing ring, prolonging the service life of the sealing ring, ensuring reliable sealing between the cover plate and the base, and at the same time, the grinding block will not fall off the base, thereby playing a role in preventing loss. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the application;

[0016] Figure 2 is a top view reference diagram of the base;

[0017] Figure 3is the internal structure of the base;

[0018] Figure 4 is Figure 3 the action state reference diagram;

[0019] In the figure: 1, base; 11, first groove; 12, second groove; 13, threaded hole; 14, first sliding groove; 15, second sliding groove; 2, cover plate; 20, bolt; 3, sealing ring; 4, polishing block; 40, counterbore; 5, screw; 51, threaded part; 52, smooth surface part; 53, limiting plate. DETAILED DESCRIPTION

[0020] In the following, the application will be further described in conjunction with the drawings and specific embodiments, it should be noted that the following described embodiments or technical features between each other or between each other can be any combination to form a new embodiment.

[0021] As Figures 1-4 shown, a high sealing hatch cover, comprising a base 1 and a cover plate 2, cover plate 2 cover set in the top of the base 1, cover plate 2 and base 1 between the locking through bolt 20, the top of the base 1 end face is provided with the first groove 11 and the second groove 12, the first groove 11 is provided with a sealing ring 3, the second groove 12 is located outside the first groove 11, the second groove 12 is provided with a polishing block 4, the groove bottom of the second groove 12 is provided with a threaded hole 13, the top of the polishing block 4 is provided with a counterbore 40, the counterbore 40 is provided with a screw 5, the top of the screw 5 is flush with the top of the polishing block 4, the bottom of the screw 5 passes through the counterbore 40 and is provided with a threaded hole 13, the polishing block 4 can rotate along the axial direction of the screw 5 and is attached to the top of the sealing ring 3.

[0022] When the bottom of the screw 5 is completely screwed into the threaded hole 13, the top of the screw 5 will be located in the counterbore 40, and the polishing block 4 will be located in the second groove 12, at this time, the cover plate 2 cover set on the base 1 can be reliably attached to the sealing ring 3, thereby playing a sealing role. When the sealing ring 3 is used for a period of time and is aged or corroded, open the cover plate 2, and screw the screw 5 out of the counterbore 40 and the threaded hole 13 (the screw 5 is a hexagonal screw 5), at this time, the locking effect of the screw 5 on the polishing block 4 can be placed on the top of the sealing ring 3 and polished on the sealing ring 3, thereby removing the aging part of the sealing ring 3, effectively prolonging the service life of the sealing ring 3, and ensuring reliable sealing between the cover plate 2 and the base 1.

[0023] The thickness of the sealing ring 3 is greater than the depth of the first groove 11, the polishing block 4 is adapted to be arranged at the inner side of the second groove 12, and the length of the polishing block 4 is greater than the width of the sealing ring 3. The top of the sealing ring 3 protrudes to the outer side of the first groove 11, so that the sealing can be reliably achieved, and a polishing allowance is left for the polishing block 4.

[0024] The bottom of the second groove 12 is provided with a first sliding groove 14 in the form of a ring, the top of the first sliding groove 14 is communicated with the second groove 12, the first sliding groove 14 penetrates the threaded hole 13 in the radial direction, the upper portion of the screw rod 5 is provided with a threaded portion 51, and the lower portion of the screw rod 5 is provided with a smooth surface portion 52. When the smooth surface portion 52 is rotated upwardly into the threaded hole 13, the polishing block 4 is located at the outer side of the second groove 12, and the smooth surface portion 52 can be slid into the first sliding groove 14. When the threaded portion 51 is screwed into the threaded hole 13, the polishing block 4 is locked by the screw rod 5 and cannot be displaced. When the sealing ring 3 needs to be polished, the screw rod 5 can be rotated upwardly, so that the smooth surface portion 52 is screwed into the threaded hole 13. At this time, the screw rod 5 can be slid into the first sliding groove 14. In this way, the rotation of the polishing block 4 around the sealing ring 3 can be achieved without the need to completely unscrew the screw rod 5. The reliable polishing of the sealing ring 3 is ensured, and the polishing block 4 is effectively prevented from falling out of the second groove 12, thereby achieving the anti-loss effect.

[0025] The width of the first sliding groove 14 is greater than the inner diameter of the threaded hole 13, the threaded portion 51 is connected with the threaded hole 13 through threads, and the smooth surface portion 52 is in close contact with the threaded hole 13. In this way, the screw rod 5 can be slid into the first sliding groove 14, so that the screw rod 5 and the polishing block 4 can be moved more conveniently.

[0026] The lower portion of the first sliding groove 14 is provided with a second sliding groove 15 in the form of a ring, the width of the first sliding groove 14 is greater than the width of the first sliding groove 14, the bottom of the screw rod 5 is provided with a limiting plate 53, and the limiting plate 53 can slide or rotate in the second sliding groove 15. The limiting plate 53 serves to limit the screw rod 5, so that the screw rod 5 cannot be pulled out of the second groove 12, thereby greatly improving the anti-loss effect. Further, when the top of the limiting plate 53 is in close contact with the connection between the second sliding groove 15 and the first sliding groove 14, the top of the screw rod 5 is located above the polishing block 4, and the polishing block 4 is located above the second groove 12. In this way, the operator can press the polishing block 4 with one hand and hold the top of the screw rod 5 with the other hand, so that the polishing block 4 can be reliably driven and the polishing effect of the sealing ring 3 can be improved.

[0027] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A high-sealing hatch cover comprising a base (1) and a cover plate (2) which is placed on top of the base (1) and is locked with the base (1) by means of bolts (20), characterized in that, The top end surface of the base (1) is provided with a first groove (11) and a second groove (12), the first groove (11) is provided with a sealing ring (3), the second groove (12) is located outside the first groove (11), the second groove (12) is provided with a polishing block (4), the bottom of the second groove (12) is provided with a threaded hole (13), the top of the polishing block (4) is provided with a countersunk hole (40), the threaded hole (40) is fitted with a screw rod (5), the top of the screw rod (5) is flush with the top of the polishing block (4), the bottom of the screw rod (5) passes through the countersunk hole (40) and is fitted and screwed in the threaded hole (13), the polishing block (4) can rotate along the axial direction of the screw rod (5) and is attached to the top of the sealing ring (3).

2. A high containment hatch cover according to claim 1, characterized in that The thickness of the sealing ring (3) is greater than the depth of the first groove (11), the polishing block (4) is fitted inside the second groove (12), and the length of the polishing block (4) is greater than the width of the sealing ring (3).

3. A high containment hatch cover according to claim 2, wherein, The bottom of the second groove (12) is provided with a first sliding groove (14), the top of the first sliding groove (14) is communicated with the second groove (12), the first sliding groove (14) penetrates the threaded hole (13) in the radial direction, the upper part of the screw rod (5) is provided with a threaded part (51), the lower part of the screw rod (5) is provided with a smooth surface part (52), when the smooth surface part (52) is rotated upwardly into the threaded hole (13), the polishing block (4) is located outside the second groove (12) and the smooth surface part (52) can be slid into the first sliding groove (14).

4. A high containment hatch cover according to claim 3, wherein, The width of the first sliding groove (14) is greater than the inner diameter of the threaded hole (13), the threaded part (51) and the threaded hole (13) are connected by threads, and the smooth surface part (52) and the threaded hole (13) are attached to each other.

5. A high containment hatch cover according to claim 3, wherein, The lower part of the first sliding groove (14) is provided with a second sliding groove (15), the width of the first sliding groove (14) is greater than the width of the first sliding groove (14), the bottom of the screw rod (5) is provided with a limiting plate (53), and the limiting plate (53) can slide or rotate in the second sliding groove (15).

6. A high containment hatch cover according to claim 5, wherein, When the top of the limiting plate (53) is attached to the connection between the second sliding groove (15) and the first sliding groove (14), the top of the screw rod (5) is located above the polishing block (4) and the polishing block (4) is located above the second groove (12).

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