A sealing plugging device for a hole of a part

Abstract

The present invention provides a sealing plugging device for a part hole. One end of the pull rod housing is in sealed sliding connection with the inner wall of the sealing gland; the outer circumference of the pull rod housing also has a locking external thread; the internal thread of the compression nut meshes with the locking external thread; the outer sealing circle of the pull rod is in sealed sliding connection with the inner wall of the pull rod housing; the other end of the pull rod extends out from the other end of the pull rod housing and is rotatably connected to the cam; the compression spring is sleeved on the pull rod; two hook pressing plates are rotatably connected to the pull rod; the pull rod extends out of the pull rod housing from the open end of the pull rod housing; both ends of the elastic clip are fixed to the backs of the two hook pressing plates to drive the two hook pressing plates to open. Its advantages are that it can effectively solve the problems of low work efficiency, insecurity in outdoor operations in large spaces, and even difficulty in operation; and it is widely applicable to hole sealing and plugging in various environmental conditions, especially for hole sealing and plugging of large containers or hole sealing and plugging of large containers in high-altitude operations.

Description

Technical Field

[0001] The present invention relates to a sealing plugging device for holes of parts. Background Art

[0002] Currently, when conducting an airtight test on a container, for the sealing and plugging of holes on the container, especially for the airtight test sealing and plugging of holes on the thin wall of a large pressure vessel, the method of tightening the gland bolts on both sides is generally adopted. The existing defects are as follows: When detecting the airtight test pressure of a large pressure vessel or a pressure vessel for high-altitude operation, for the sealing and plugging of holes, it requires the cooperation of two people inside and outside. The work efficiency is low, and there are safety hazards and difficulties in operation for people standing at a high position outside. For another example, when conducting the airtight test pressure detection of an aircraft cabin, for the sealing and plugging of holes, it requires the cooperation of two people inside and outside. The work efficiency is low, and there are safety hazards and difficulties in operation for people standing at a high position outside. Summary of the Invention

[0003] The sealing plugging device for holes of parts provided by the present invention effectively replaces the currently commonly used method of sealing and plugging holes by tightening gland bolts on both sides, and can effectively solve the problems of low work efficiency, insecurity in outdoor operation in a large space, and even difficulty in operation; and it is widely applicable to various environmental conditions for hole sealing and plugging, especially for the hole sealing and plugging of large containers or the hole sealing and plugging of large containers for high-altitude operation; to overcome the defects of the prior art.

[0004] The present invention provides a sealing plugging device for holes of parts, including: a cam 1, a pull rod 3, a pull rod housing, a compression spring 5, a compression nut 9, a sealing gland 10, two hook pressing plates 11, and an elastic clip 13; one end of the pull rod housing is open, and this end is arranged inside the sealing gland 10, and the open end of the pull rod housing is in sealed sliding connection with the inner wall of the sealing gland 10; the other end of the pull rod housing extends out of the sealing gland 10; there is also a locking external thread 6b on the circumference of the pull rod housing; the internal thread of the compression nut 9 meshes with the locking external thread 6b; one end of the pull rod 3 has a pull rod sealing outer circle 3a, and the pull rod sealing outer circle 3a matches the inner diameter of the pull rod housing and is in sealed sliding connection with the inner wall of the pull rod housing; the other end of the pull rod 3 extends out from the other end of the pull rod housing and is rotatably connected to the cam 1; the compression spring 5 is sleeved on the pull rod 3 and is located between the step surface 31 of the pull rod sealing outer circle and the end cover of the pull rod housing; the two hook pressing plates 11 are symmetrically arranged and are rotatably connected to the pull rod 3, and the connection position is at the pull rod sealing outer circle 3a; the other end of the hook pressing plate 11 is in the shape of a hook and extends out of the pull rod housing from the open end of the pull rod housing; the two ends of the elastic clip 13 are respectively fixed on the backs of the two hook pressing plates 11 to drive the two hook pressing plates 11 to open.

[0005] Furthermore, the sealing plugging device for holes of parts provided by the present invention may also have the following characteristics: The pull rod housing includes: a cylinder body 6 and an end cover 4; one end of the cylinder body 6 is open, and the end cover is fixed to the other end of the cylinder body 6.

[0006] Furthermore, the present invention provides a sealing plugging device for a part hole, which may further have the following characteristics: The sealing gland 10 has a two-stage stepped hole, with the large end being the end cover sealing hole 1a and the small end being the limiting hole 1b; One end of the cylinder 6 has a sealing outer circle 6a; The size of the sealing outer circle 6a matches that of the end cover sealing hole 1a, and the sealing outer circle 6a can move within the end cover sealing hole 1a.

[0007] Furthermore, the present invention provides a sealing plugging device for a part hole, which may further have the following characteristics: The circumference of the sealing outer circle 6a has an outer shell sealing groove, and the outer shell sealing ring 14 is embedded in the outer shell sealing groove.

[0008] Furthermore, the present invention provides a sealing plugging device for a part hole, which may further have the following characteristics: The locking external thread 6b is arranged adjacent to the sealing outer circle 6a, and the maximum outer diameter of the locking external thread 6b is smaller than the diameter of the limiting hole 1b; Four handles 8 are evenly distributed on the circumference of the pressing nut 9.

[0009] Furthermore, the present invention provides a sealing plugging device for a part hole, which may further have the following characteristics: The pull rod 3 and the cam with handle 1 are rotatably connected through the cam pin 2.

[0010] Furthermore, the present invention provides a sealing plugging device for a part hole, which may further have the following characteristics: The circumference of the pull rod sealing outer circle 3a has a pull rod sealing groove, and the pull rod sealing ring 7 is arranged in the pull rod sealing groove.

[0011] Furthermore, the present invention provides a sealing plugging device for a part hole, which may further have the following characteristics: One end of the two hook pressing plates 11 is rotatably connected to the position where the pull rod sealing outer circle 3a is located through the hook pressing plate pin 12.

[0012] Furthermore, the present invention provides a sealing plugging device for a part hole, which may further have the following characteristics: The elastic clip 13 is in an Λ shape; The cam 1 is a cam with handle.

[0013] Furthermore, the present invention provides a sealing plugging device for a part hole, which may further have the following characteristics: The lower end face of the sealing gland 10 is provided with a gland sealing groove, and the gland sealing ring 15 is arranged in the gland sealing groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the initial installation state of the sealing plugging device for the part hole in the embodiment.

[0015] Figure 2 is a schematic diagram of the hole sealing state after installation of the sealing plugging device for the part hole in the embodiment.

[0016] Figure 3It is a three-dimensional external view of the sealing plugging device for the part hole in the embodiment. Specific Embodiment

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] As Figure 1 shown, the sealing plugging device for the part hole in this embodiment includes: a cam with a handle 1, a cam pin 2, a pull rod 3, a pull rod housing, a compression spring 5, a pull rod sealing ring 7, a compression nut 9, a sealing gland 10, two hook pressing plates 11, hook pressing plate pins 12, an elastic clip 13, a housing sealing ring 14 and a gland sealing ring 15.

[0019] In this embodiment, the pull rod housing includes: a cylinder 6 and an end cover 4. One end of the cylinder 6 is open, and the end cover is fixed to the other end of the cylinder 6. The end cover 4 has a central hole in the end cover.

[0020] The open end of the pull rod housing, that is, the open end of the cylinder 6, is arranged inside the sealing gland 10, and the open end of the pull rod housing is in sealed sliding connection with the inner wall of the sealing gland 10. The specific structure is: the sealing gland 10 has a two-stage stepped hole, the large end is the end cover sealing hole 1a, and the small end is the limiting hole 1b; one end of the cylinder 6 has a sealing outer circle 6a; the size of the sealing outer circle 6a matches the end cover sealing hole 1a, and the sealing outer circle 6a can move in the end cover sealing hole 1a. There is a housing sealing groove on the circumference of the sealing outer circle 6a, and the housing sealing ring 14 is embedded in the housing sealing groove to ensure the sealing performance between the end cover sealing hole 1a of the sealing gland 10 and the sealing outer circle 6a of the cylinder 6. In order to ensure the sealing performance between the sealing gland 10 and the part hole panel 16, a gland sealing groove is provided on the lower end face of the sealing gland 10, and the gland sealing ring 15 is arranged in the gland sealing groove.

[0021] The other end of the pull rod housing, that is, the end of the cylinder 6 where the end cover 4 is fixed, extends out of the sealing gland 10. On the outer circle of the pull rod housing, that is, on the circumference of the cylinder 6, there is also a locking external thread 6b. The internal thread of the compression nut 9 meshes with the locking external thread 6b. In this embodiment, the locking external thread 6b is arranged adjacent to the sealing outer circle 6a, and the maximum outer diameter of the locking external thread 6b is smaller than the diameter of the limiting hole 1b. There are four circumferentially evenly distributed handles 8 on the circumference of the compression nut 9.

[0022] One end of the pull rod 3 has an outer sealing circle 3a of the pull rod. The outer sealing circle 3a of the pull rod matches the inner diameter of the pull rod housing, that is, the inner diameter of the cylinder body 6, and is in sealed sliding connection with the inner wall of the cylinder body 6. The other end of the pull rod 3 extends out from the central hole of the end cover 4 and is rotatably connected to the cam with handle 1. In this embodiment, the pull rod 3 and the cam with handle 1 are rotatably connected through the cam pin 2. The compression spring 5 is sleeved on the pull rod 3 and is located between the outer sealing circle 3a of the pull rod and the end cover 4. There is a sealing groove on the circumference of the outer sealing circle 3a of the pull rod, and the pull rod sealing ring 7 is arranged in the sealing groove to ensure the sealing between the outer sealing circle 3a of the pull rod and the inner wall of the cylinder body 6.

[0023] Two hook pressing plates 11 are symmetrically arranged and are rotatably connected to the pull rod 3. The connection position is at the outer sealing circle 3a of the pull rod. In this embodiment, one end of the two hook pressing plates 11 is rotatably connected to the position where the outer sealing circle 3a of the pull rod is located through the hook pressing plate pin 12. The other end of the hook pressing plate 11 is in the shape of a hook and extends out of the cylinder body 6 from the open end (the groove opened) of the cylinder body 6. The elastic clip 13 is in the shape of Λ, and both ends are respectively fixed on the backs of the two hook pressing plates 11 to drive the two hook pressing plates 11 to open.

[0024] The working process of the sealing plugging device for the part hole:

[0025] Before plugging the part hole, straighten the cam with handle 1, drive the pull rod 3 to move upward relative to the cylinder body 6, and drive the hook pressing plate 11 rotatably connected to the other end of the pull rod 3 to elastically contract into the cylinder body 6. At this time, the maximum outer diameter dimension of both ends of the hook pressing plate 11 is smaller than the dimension of the plugged part hole.

[0026] When plugging the part hole, press the sealing gland 10 on the part hole panel 16 and initially align the hook pressing plate 11 with the position of the part hole, such as Figure 2 .

[0027] Then rotate the cam with handle 1 to make it in a horizontal state. At this time, under the action of the compression spring 5, drive the pull rod 3 to move towards the open end of the cylinder body 6. The hook pressing plate 11 extends out from the open end (the groove opened) of the cylinder body 6 and opens outward under the action of the elastic clip 13 and buckles on both sides of the part hole. Then rotate the compression nut 9 forward through the handle 8 to drive the entire pull rod housing and the pull rod to move away from the part hole panel 16, so that the hook pressing plate 11 firmly fits on the outer wall of the part hole panel 16; as Figure 1 shown. At this time, the part hole is hermetically plugged through the pull rod sealing ring 7, the housing sealing ring 14, and the gland sealing ring 15.

[0028] After the airtight test is completed, rotate the compression nut 9 in the reverse direction through the handle 8. The force is transmitted through the pull rod housing, the cylinder body 6, the cam 1, the cam pin 2, the pull rod 3, and the hook pressure plate pin 12, so that the two hook pressure plates 11 are disengaged from the outer wall of the part hole panel 16. At this time, rotate the cam 1 with a handle to make it in a vertical state. Through the cam pin 2, the pull rod 3, and the hook pressure plate pin 12, the two hook pressure plates 11 are retracted into the cylinder body through the open end (in the opened groove) of the cylinder body 6. At this time, remove the device and the airtight test is completed.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing plugging device for a part hole, characterized in that: It includes a cam (1), a pull rod (3), a pull rod housing, a compression spring (5), a compression nut (9), a sealing gland (10), two hook pressing plates (11) and an elastic clip (13); One end of the pull rod housing is open, and this end is arranged inside the sealing gland (10), and the open end of the pull rod housing is in sealed sliding connection with the inner wall of the sealing gland (10); the other end of the pull rod housing extends out of the sealing gland (10); The circumference of the pull rod housing also has a locking external thread (6b); the internal thread of the compression nut (9) meshes with the locking external thread (6b); One end of the pull rod (3) has a pull rod sealing outer circle (3a), and the pull rod sealing outer circle (3a) matches the inner diameter of the pull rod housing and is in sealed sliding connection with the inner wall of the pull rod housing; The other end of the pull rod (3) extends out of the other end of the pull rod housing and is rotatably connected to the cam (1); The compression spring (5) is sleeved on the pull rod (3) and is located between the step surface of the pull rod sealing outer circle (31) and the end cover of the pull rod housing; The two hook pressing plates (11) are symmetrically arranged and are rotatably connected to the pull rod (3); The other end of the hook pressing plate (11) is in the shape of a hook and extends out of the pull rod housing from the open end of the pull rod housing; Both ends of the elastic clip (13) are respectively fixed on the backs of the two hook pressing plates (11) to drive the two hook pressing plates (11) to open; The pull rod housing includes: a cylinder body (6) and an end cover (4); one end of the cylinder body (6) is open, and the end cover is fixed to the other end of the cylinder body (6); The sealing gland (10) has a two-stage stepped hole, the large end is an end cover sealing hole (1a), and the small end is a limiting hole (1b); one end of the cylinder body (6) has a sealing outer circle (6a); the size of the sealing outer circle (6a) matches the end cover sealing hole (1a), and the sealing outer circle (6a) can move in the end cover sealing hole (1a); There is a pull rod sealing groove on the circumference of the pull rod sealing outer circle (3a), and a pull rod sealing ring (7) is arranged in the pull rod sealing groove; One end of the two hook pressing plates (11) is rotatably connected to the position where the pull rod sealing outer circle (3a) is located through a hook pressing plate pin (12).

2. The sealing plugging device for a part hole according to claim 1, wherein: Among them, There is an outer shell sealing groove on the circumference of the sealing outer circle (6a), and an outer shell sealing ring (14) is embedded in the outer shell sealing groove.

3. The sealing plugging device for a part hole according to claim 1, wherein: Among them, The locking external thread (6b) is arranged adjacent to the sealing outer circle (6a), and the maximum outer diameter of the locking external thread (6b) is smaller than the diameter of the limiting hole (1b); There are four circumferentially evenly distributed handles (8) on the circumference of the compression nut (9).

4. The sealing plugging device for a part hole according to claim 1, wherein: Among them, The pull rod (3) and the cam (1) are rotatably connected through a cam pin (2).

5. The sealing plugging device for a part hole according to claim 1, wherein: Among them, The elastic clip (13) is in a Λ shape; The cam (1) is a cam with a handle.

6. The sealing plug device for a part hole according to any one of claims 1-5, characterized in that: Among them, A gland seal groove is provided on the lower end surface of the sealing gland (10), and a gland seal ring (15) is arranged in the gland seal groove.

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