Corrosion-resistant sealing assembly

Abstract

The utility model relates to the technical field of sealing elements, in particular to a corrosion-resistant sealing assembly which comprises a perfluoroether sealing element, a fixing frame is installed on one side of the perfluoroether sealing element, the two ends of the fixing frame extend towards the two sides of the perfluoroether sealing element to form fixing lug parts, and the fixing lug parts are connected with the perfluoroether sealing element. The two sides of the perfluoroether sealing piece are obliquely arranged to form press-fit inclined faces, an open hole is formed in the perfluoroether sealing piece and located between the two fixing lug parts, a metal guide sleeve is fixedly connected into the open hole, the metal guide sleeve is fixed in the perfluoroether sealing piece, and a fixing shaft penetrates through the metal guide sleeve to be matched with locking nuts at the two ends. The perfluoroether sealing element and the fixing frame are installed and fixed, the perfluoroether sealing element and the fixing frame can be rapidly fixed without screw holes, abrasion of the perfluoroether sealing element caused by threaded connection is avoided, and fixing of the perfluoroether sealing element cannot be loosened.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing components, in particular to a corrosion-resistant sealing component. Background Art

[0002] Seals are materials or parts that prevent fluids or solid particles from leaking between adjacent mating surfaces and prevent external impurities such as dust and moisture from invading components inside machinery and equipment.

[0003] In the prior art, there is a sealing gasket proposed in patent application number "CN201220687737.1", which includes an annular sealing gasket body, and its characteristics are: the annular sealing gasket body is made of a rigid frame and a rubber covering on the outside, and bolt holes are arranged on the annular sealing gasket body.

[0004] However, in the above patent, screw holes are provided on the sealing gasket to assist in fixing the sealing gasket. At the fixing position of the sealing gasket, the inner wall of the screw hole is in direct rotational contact with the external mechanism, which may easily cause wear of the screw hole on the sealing gasket and further cause the fixing of the sealing gasket to loosen. Utility Model Content

[0005] The purpose of the utility model is to provide a corrosion-resistant sealing component to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A corrosion-resistant sealing component comprises a perfluoroether seal, a fixing frame is installed on one side of the perfluoroether seal, two ends of the fixing frame extend to both sides of the perfluoroether seal to form fixing ears, both sides of the perfluoroether seal are inclined to form press-fitting inclined surfaces, an opening is provided in the perfluoroether seal and between the two fixing ears, a metal guide sleeve is fixedly connected in the opening.

[0008] A fixed shaft is arranged inside the metal guide sleeve, and both ends of the fixed shaft pass through the metal guide sleeve and the fixed ear in sequence and extend to the outside of the fixed ear. Threads are arranged at both ends of the fixed shaft, and locking nuts are threadedly connected at both ends of the fixed shaft and located on the outside of the fixed ear. The locking nuts are used to fix the perfluoroether seal and the fixed frame together.

[0009] Preferably, the perfluoroether seal has a recess therein, and a positioning protrusion is fixedly connected to the outer surface of the metal guide sleeve and located at the recess of the perfluoroether seal.

[0010] Preferably, a concave hole is formed on one side of the fixed frame close to the perfluoroether seal, and a protruding shaft for use with the concave hole is fixedly connected to one side of the perfluoroether seal.

[0011] Preferably, a cavity is formed on the inner surface of the fixed ear portion, and horizontal planes are formed on both sides of the perfluoroether seal, and the horizontal planes on both sides of the perfluoroether seal are located in the cavity.

[0012] Preferably, a first pressing sheet and a second pressing sheet are fixedly connected to one side of the fixed frame close to the perfluoroether seal, and the first pressing sheet and the second pressing sheet are respectively arranged on the top and the bottom of the perfluoroether seal.

[0013] Preferably, a protruding bracket is fixedly connected to one side of the fixed frame away from the perfluoroether seal, a linear array of arc-shaped grooves is provided on one side of the protruding bracket, a fixing hole is provided on the top of the protruding bracket, the fixing holes and the arc-shaped grooves are alternately arranged, an arc-shaped fitting groove is provided at the bottom of the protruding bracket and below the fixing hole, and the arc-shaped fitting groove and the fixing hole are connected.

[0014] Beneficial effects of the utility model:

[0015] The utility model adopts a perfluoroether seal as a seal to seal an external mechanism, and utilizes the characteristics of perfluoroether to make the high temperature resistance and corrosion resistance during sealing better. At the same time, a metal guide sleeve is fixed inside the perfluoroether seal, and a fixed shaft is passed through the metal guide sleeve to cooperate with locking nuts at both ends to install and fix the perfluoroether seal and the fixed frame. The fixation between the perfluoroether seal and the fixed frame can be quickly completed without setting screw holes, avoiding threaded connection to cause wear of the perfluoroether seal, and preventing the fixation of the perfluoroether seal from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This utility model Figure 1 A schematic diagram of the structure of the bottom of the fixed frame;

[0019] Figure 3 This utility model Figure 1 A schematic diagram of the structure of the fixed frame;

[0020] Figure 4 This utility model Figure 3 A cross-sectional view of the fixed frame;

[0021] Figure 5This utility model Figure 4 Schematic diagram of the structure of the fixed ear part.

[0022] The reference numerals in the figures are as follows:

[0023] 1. Perfluoroether seal, 101. Press-fit slope, 2. Fixed frame, 201. Fixed ear, 202. Inner concave hole, 3. Metal guide sleeve, 4. Fixed shaft, 5. Locking nut, 6. Positioning protrusion, 7. Raised shaft, 8. Cavity, 9. First pressing sheet, 10. Second pressing sheet, 11. Raised bracket, 12. Arc-shaped groove, 13. Fixed hole, 14. Arc-shaped fitting groove, 15. Rubber sleeve. DETAILED DESCRIPTION

[0024] 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.

[0025] A corrosion-resistant sealing component includes a perfluoroether seal 1, a fixed frame 2 is installed on one side of the perfluoroether seal 1, two ends of the fixed frame 2 extend to both sides of the perfluoroether seal 1 to form fixed ears 201, both sides of the perfluoroether seal 1 are inclined to form a press-fit inclined surface 101, an opening is opened in the perfluoroether seal 1 and located between the two fixed ears 201, and a metal guide sleeve 3 is fixedly connected in the opening.

[0026] A fixed shaft 4 is arranged inside the metal guide sleeve 3, and both ends of the fixed shaft 4 pass through the metal guide sleeve 3 and the fixed ear 201 in sequence and extend to the outside of the fixed ear 201. Threads are arranged at both ends of the fixed shaft 4. Locking nuts 5 are threadedly connected at both ends of the fixed shaft 4 and located on the outside of the fixed ear 201. The locking nuts 5 are used to fix the perfluoroether seal 1 and the fixed frame 2 together.

[0027] like Figure 1 The perfluoroether seal 1 is prepared by using FFKM perfluoroether raw rubber as raw material, 5 parts of di-25 as vulcanization system, and 5 parts of acid absorbent magnesium oxide to prepare a mixed rubber. Its various physical and mechanical properties meet the requirements, and its high temperature performance and medium resistance are excellent. It can be used to manufacture medium-resistant and high-temperature resistant seals, so that the manufactured sealing components have strong corrosion resistance. The fixed frame 2 and the fixed ear 201 are both made of high-temperature resistant cemented carbide.

[0028] Figure 4 and Figure 5A slot is provided on one side of the fixed ear 201, and a rubber sleeve 15 is provided between the fixed ear 201 and the locking nut 5. One end of the rubber sleeve 15 is inserted into the slot of the fixed ear 201. The rubber sleeve 15 can be used to improve the friction between the locking nut 5 and the fixed ear 201, so that the locking nut 5 can have a better locking effect. The metal guide sleeve 3 is fixed in the perfluoroether seal 1 to avoid direct contact and wear between the perfluoroether seal and the fixed shaft 4.

[0029] The perfluoroether seal 1 is provided with a recess, and a positioning protrusion 6 is fixedly connected to the outer surface of the metal guide sleeve 3 and located at the recess of the perfluoroether seal 1 .

[0030] like Figure 4 By fixing the positioning protrusion 6 inside the perfluoroether seal 1, debonding and rotation between the metal guide sleeve 3 and the inner wall of the perfluoroether seal 1 can be avoided, the stability of the metal guide sleeve 3 is improved, and the metal guide sleeve 3 and the perfluoroether seal 1 are integrated into one.

[0031] The fixing frame 2 is provided with an inner concave hole 202 on one side close to the perfluoroether seal 1 , and a protruding shaft 7 used in conjunction with the inner concave hole 202 is fixedly connected to one side of the perfluoroether seal 1 .

[0032] like Figure 3 and Figure 4 When the perfluoroether seal 1 moves toward the fixed frame 2, the protruding shaft 7 can be inserted into the inner concave hole 202 to position the perfluoroether seal 1.

[0033] A cavity 8 is formed on the inner surface of the fixing ear portion 201 , and horizontal planes are formed on both sides of the perfluoroether seal 1 . The horizontal planes on both sides of the perfluoroether seal 1 are located in the cavity 8 .

[0034] like Figure 1 , Figure 3 and Figure 4 When the perfluoroether seal 1 moves toward the fixed frame 2, both sides thereof can be inserted into the cavity 8 to position the perfluoroether seal 1.

[0035] A first pressing sheet 9 and a second pressing sheet 10 are fixedly connected to one side of the fixed frame 2 close to the perfluoroether seal 1 . The first pressing sheet 9 and the second pressing sheet 10 are respectively arranged on the top and the bottom of the perfluoroether seal 1 .

[0036] like Figure 1 and Figure 2 The first pressing sheet 9 and the second pressing sheet 10 can provide positioning from above and below the perfluoroether seal 1 respectively.

[0037] A protruding bracket 11 is fixedly connected to one side of the fixed frame 2 away from the perfluoroether seal 1. A linear array of arc-shaped grooves 12 are provided on one side of the protruding bracket 11. A fixing hole 13 is provided on the top of the protruding bracket 11. The fixing holes 13 and the arc-shaped grooves 12 are alternately arranged. An arc-shaped fitting groove 14 is provided at the bottom of the protruding bracket 11 and below the fixing hole 13. The arc-shaped fitting groove 14 is communicated with the fixing hole 13.

[0038] like Figure 1 and Figure 3 The arc-shaped groove 12 and the arc-shaped fitting groove 14 are adapted to the external mechanism and can fit with the external arc-shaped protrusion. The external bolt passes through the fixing hole 13 to fix the protrusion bracket 11 and the fixing frame 2 to the external mechanism.

[0039] The working principle of a corrosion-resistant sealing component provided by the utility model is as follows:

[0040] When fixing the perfluoroether seal 1 and the fixed frame 2, the perfluoroether seal 1 is attached to one side of the fixed frame 2, the fixed shaft 4 passes through the fixed ear 201 and the metal guide sleeve 3, and then is threadedly connected with the locking nut 5, so that the perfluoroether seal 1 and the fixed frame 2 can be fixed. Conversely, the locking nut 5 is removed, the fixed shaft 4 is pulled out, and the perfluoroether seal 1 and the fixed frame 2 can be separated.

[0041] Compared with the related art, the corrosion-resistant sealing assembly provided by the utility model has the following beneficial effects:

[0042] The utility model adopts a perfluoroether seal 1 as a seal to seal an external mechanism, and utilizes the characteristics of perfluoroether to make the high temperature resistance and corrosion resistance during sealing better. At the same time, a metal guide sleeve 3 is fixed inside the perfluoroether seal 1, and a fixed shaft 4 is used to pass through the metal guide sleeve 3 to cooperate with locking nuts 5 at both ends to install and fix the perfluoroether seal 1 and the fixed frame 2. The fixation between the perfluoroether seal 1 and the fixed frame 2 can be quickly completed without setting screw holes, avoiding the threaded connection to cause wear of the perfluoroether seal 1, so that the fixation of the perfluoroether seal 1 will not be loose.

[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A corrosion-resistant sealing assembly, comprising a perfluoroether seal (1), characterized in that: A fixed frame (2) is installed on one side of the perfluoroether seal (1), two ends of the fixed frame (2) extend toward two sides of the perfluoroether seal (1) to form fixed ears (201), two sides of the perfluoroether seal (1) are inclined to form press-fit inclined surfaces (101), an opening is provided in the perfluoroether seal (1) and located between the two fixed ears (201), and a metal guide sleeve (3) is fixedly connected in the opening; A fixed shaft (4) is arranged inside the metal guide sleeve (3), and both ends of the fixed shaft (4) pass through the metal guide sleeve (3) and the fixed ear portion (201) in sequence and extend to the outside of the fixed ear portion (201), and both ends of the fixed shaft (4) are provided with threads, and locking nuts (5) are threadedly connected at both ends of the fixed shaft (4) and located outside the fixed ear portion (201), and the locking nuts (5) are used to fix the perfluoroether seal (1) and the fixed frame (2) together.

2. A corrosion-resistant sealing assembly according to claim 1, characterized in that: The perfluoroether seal (1) is provided with an inner recess, and a positioning protrusion (6) is fixedly connected to the outer surface of the metal guide sleeve (3) and located at the inner recess of the perfluoroether seal (1).

3. A corrosion-resistant sealing assembly according to claim 1, characterized in that: The fixed frame (2) is provided with an inner concave hole (202) on one side close to the perfluoroether seal (1), and a protruding shaft (7) used in conjunction with the inner concave hole (202) is fixedly connected to one side of the perfluoroether seal (1).

4. The corrosion-resistant sealing assembly according to claim 1, characterized in that: The inner surface of the fixed ear portion (201) is formed with a cavity (8), and horizontal planes are formed on both sides of the perfluoroether seal (1), and the horizontal planes on both sides of the perfluoroether seal (1) are located in the cavity (8).

5. A corrosion-resistant sealing assembly according to claim 4, characterized in that: A first pressing sheet (9) and a second pressing sheet (10) are fixedly connected to one side of the fixed frame (2) close to the perfluoroether seal (1); the first pressing sheet (9) and the second pressing sheet (10) are respectively arranged at the top and the bottom of the perfluoroether seal (1).

6. The corrosion-resistant sealing assembly according to claim 1, characterized in that: A protruding bracket (11) is fixedly connected to a side of the fixed frame (2) away from the perfluoroether seal (1); a linear array of arc-shaped grooves (12) are provided on one side of the protruding bracket (11); a fixing hole (13) is provided on the top of the protruding bracket (11); the fixing hole (13) and the arc-shaped groove (12) are arranged alternately; an arc-shaped fitting groove (14) is provided at the bottom of the protruding bracket (11) and below the fixing hole (13); the arc-shaped fitting groove (14) and the fixing hole (13) are connected.

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