Extrusion type plug

Abstract

An extrusion hole is formed in a sleeve, the extrusion hole penetrates through one axial end of the sleeve, an extrusion piece is cylindrical, the diameter of the extrusion piece is equal to that of the extrusion hole, a plurality of annular inwards-concave deformation grooves are formed in the outer side wall of the sleeve, and the deformation grooves are formed in the outer side wall of the sleeve. The multiple deformation grooves are formed in the axial direction of the sleeve at intervals, protruding extrusion strips are arranged on the outer side wall of the front end of the extrusion piece, the extrusion strips are arranged in the axial direction of the extrusion piece, and the multiple extrusion strips are arranged in the circumferential direction of the extrusion piece at intervals. When the extrusion piece enters the sleeve, the sleeve is firstly extruded through the extrusion strip at the front end of the extrusion piece, the extrusion strip performs local extrusion, compared with comprehensive extrusion, the extrusion entering difficulty is relatively smaller, and after the extrusion strip enters, the extrusion ring enters to perform comprehensive extrusion on the side wall of the sleeve; and the entering difficulty of the extrusion ring for comprehensive extrusion is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plugging heads, in particular to an extrusion type plugging head. Background Art

[0002] The plug described in the present application is a device used to block unnecessary channels on a valve body, a cylinder body, etc.

[0003] Common plugs include square plugs, hexagonal plugs, and round plugs. These plugs are prone to high-pressure leakage during use, and they also require high processing accuracy.

[0004] A blocking device is disclosed in the patent application number CN201420305171.0, see Figure 1 As shown, it includes a sleeve and a steel ball. The steel ball is squeezed into the sleeve, causing the sleeve to expand radially and combine more closely with the hole wall, thereby improving the sealing effect.

[0005] In the above-mentioned blocking device, when the steel ball is squeezed into the sleeve, only the middle position of the steel ball contacts and squeezes the inner wall of the sleeve, making the connection between the steel ball and the sleeve unstable. In addition, when the steel ball is squeezed into the sleeve, it squeezes the side wall of the sleeve on a circular surface at the same time, which makes it difficult for the steel ball to enter. Utility Model Content

[0006] In view of the problems pointed out in the background technology, the utility model proposes an extrusion type plug to solve the above technical problems.

[0007] The technical solution of the utility model is achieved in this way:

[0008] An extrusion plug comprises a sleeve and an extrusion piece. An extrusion hole is arranged in the sleeve and passes through one axial end of the sleeve. The extrusion piece is cylindrical and the diameter of the extrusion piece is equal to the diameter of the extrusion hole.

[0009] The utility model is further configured that an inner concave deformation groove is provided on the outer side wall of the sleeve.

[0010] The utility model is further configured that the deformation groove is in a circular ring shape, a plurality of deformation grooves are provided, and the plurality of deformation grooves are spaced apart in the axial direction of the sleeve.

[0011] The utility model is further configured that a protruding extrusion strip is provided on the outer side wall of the front end of the extrusion piece, the extrusion strip is arranged along the axial direction of the extrusion piece, a plurality of extrusion strips are provided, and the plurality of extrusion strips are arranged at intervals in the circumferential direction of the extrusion piece.

[0012] The utility model is further configured that a protruding, annular extrusion ring is provided on the outer side wall of the front end of the extrusion piece, and the extrusion ring is located at the rear side of the extrusion strip.

[0013] The utility model is further configured that a plurality of extrusion rings are provided, and the plurality of extrusion rings are spaced apart in the axial direction of the extrusion piece.

[0014] The utility model is further configured such that the thickness of the front end of the extruded strip gradually increases from the front to the back.

[0015] The utility model is further configured that the opening end of the extrusion hole is provided with a chamfer.

[0016] The utility model is further configured such that the depth of the extrusion hole is greater than the length of the extrusion piece.

[0017] The utility model is further configured that the sleeve and the extrusion piece are both made of stainless steel.

[0018] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0019] (1) The cylindrical extrusion part is stably connected to the extrusion hole.

[0020] (2) When the extrusion piece enters the sleeve, the sleeve is first squeezed by the extrusion strip at its front end. The extrusion strip is a partial extrusion. Compared with the full extrusion, the extrusion entry is relatively easier. After the extrusion strip enters, the extrusion ring enters to fully extrude the side wall of the sleeve. Since the partial extrusion is performed first, the entry difficulty of the extrusion ring for full extrusion will also be reduced. This reduces the difficulty of operation and ensures better sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a structural schematic diagram of the prior art.

[0023] Figure 2 It is a structural schematic diagram of the utility model.

[0024] Figure 3 It is an exploded schematic diagram of the utility model.

[0025] Figure 4 It is a cross-sectional view of the utility model.

[0026] Description of the reference numerals in the accompanying drawings: sleeve 1, extrusion part 2, extrusion hole 3, deformation groove 4, extrusion strip 5, extrusion ring 6, chamfer 7. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] For reference Figure 1-4 The utility model is described as follows:

[0029] Embodiment 1: An extrusion plug comprises a sleeve 1 and an extrusion piece 2.

[0030] The sleeve 1 is a cylindrical structure, and the sleeve 1 is made of stainless steel. An extrusion hole 3 is provided in the sleeve 1, and the extrusion hole 3 runs through the rear end of the sleeve 1. The open end of the extrusion hole 3 is provided with a chamfer 7 (to facilitate the entry of the extrusion piece 2). The outer wall of the sleeve 1 is provided with a concave deformation groove 4 (when the sleeve 1 is extruded, the deformation groove 4 provided helps the sleeve 1 to expand and deform), the deformation groove 4 is annular, and a plurality of deformation grooves 4 are provided, and the plurality of deformation grooves 4 are arranged at intervals in the axial direction of the sleeve 1.

[0031] The extrusion piece 2 is cylindrical and made of stainless steel. The diameter of the extrusion piece 2 is equal to the diameter of the extrusion hole 3, and the depth of the extrusion hole 3 is greater than the length of the extrusion piece 2. A protruding extrusion strip 5 is provided on the outer side wall of the front end of the extrusion piece 2. The extrusion strip 5 is in the shape of a long strip and is arranged along the axial direction of the extrusion piece 2. The thickness of the front end of the extrusion strip 5 gradually becomes thicker from front to back. There are multiple extrusion strips 5, and the multiple extrusion strips 5 are arranged at equal intervals in the circumferential direction of the extrusion piece 2. When the extrusion piece 2 enters the extrusion hole 3, the side wall of the sleeve 1 is first extruded by the extrusion strip 5. Since the extrusion strip 5 contacts a part of the sleeve 1, local extrusion is formed, and the resistance is relatively smaller, making it easier for the extrusion piece 2 to enter.

[0032] A protruding, annular extrusion ring 6 is provided on the outer side wall of the front end of the extrusion piece 2. The extrusion ring 6 is located at the rear side of the extrusion strip 5. A plurality of extrusion rings 6 are provided, and the plurality of extrusion rings 6 are arranged at intervals in the axial direction of the extrusion piece 2. The extrusion piece 2 enters the extrusion hole 3, and firstly extrudes the side wall of the sleeve 1 through the extrusion strip 5, and then the side wall of the sleeve 1 is fully extruded through the extrusion ring 6. Since the extrusion strip 5 is extruded in advance, the difficulty of the extrusion ring 6 entering is also reduced.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An extrusion plug, comprising a sleeve (1) and an extrusion piece (2), wherein an extrusion hole (3) is provided in the sleeve (1), and the extrusion hole (3) passes through one axial end of the sleeve (1), and is characterized in that: The extrusion piece (2) is cylindrical, and the diameter of the extrusion piece (2) is equal to the diameter of the extrusion hole (3).

2. The extrusion plug according to claim 1, characterized in that: An inwardly concave deformation groove (4) is provided on the outer side wall of the sleeve (1).

3. The extrusion plug according to claim 2, characterized in that: The deformation groove (4) is in the shape of a circular ring, and a plurality of deformation grooves (4) are provided, and the plurality of deformation grooves (4) are arranged at intervals in the axial direction of the sleeve (1).

4. The extrusion plug according to claim 1, characterized in that: A protruding extrusion strip (5) is provided on the outer side wall of the front end of the extrusion piece (2). The extrusion strip (5) is arranged along the axial direction of the extrusion piece (2). A plurality of extrusion strips (5) are provided, and the plurality of extrusion strips (5) are arranged at intervals in the circumferential direction of the extrusion piece (2).

5. The extrusion plug according to claim 4, characterized in that: A protruding, annular extrusion ring (6) is provided on the outer side wall of the front end of the extrusion piece (2), and the extrusion ring (6) is located on the rear side of the extrusion strip (5).

6. The extrusion plug according to claim 5, characterized in that: A plurality of the extrusion rings (6) are provided, and the plurality of extrusion rings (6) are arranged at intervals in the axial direction of the extrusion piece (2).

7. The extrusion plug according to claim 4, characterized in that: The thickness of the front end of the extruded strip (5) is gradually increased from front to back.

8. The extrusion plug according to claim 1, characterized in that: The opening end of the extrusion hole (3) is provided with a chamfer (7).

9. The extrusion plug according to claim 6, characterized in that: The depth of the extrusion hole (3) is greater than the length of the extrusion piece (2).

10. The extrusion plug according to claim 1, characterized in that: The sleeve (1) and the extruded part (2) are both made of stainless steel.

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