Fish plug seal with large opening

Abstract

The utility model provides a spring seal with a large opening, which relates to the technical field of spring seals and comprises a sealing jacket and a spring, the sealing jacket sequentially comprises an outer sealing clamping arm, a jacket body and an inner sealing clamping arm from outside to inside, and a mounting groove is arranged between the outer sealing clamping arm and the inner sealing clamping arm and close to a lip. The sealing jacket plays a supporting role, the spring provides initial sealing force, in the using process, when a system does not have pressure, the spring provides the initial sealing force for the spring seal, the lip of the sealing jacket is tightly attached to the working face, low-pressure leakage is prevented, and when the system has pressure, medium pressure acts on all directions in the groove of the spring seal, so that the sealing effect is good. The lip is tightly attached to the sealing surface, so that the spring seal has the advantages of large shrinkage and large sealing force, can adapt to a low-temperature working condition and is very suitable for a groove with increased depth, the sealing effect can be achieved under the condition that the size of the sealing groove is not changed, the manufacturing cost is low, and the installation is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of pan plug seals, in particular to a pan plug seal with a large opening. Background Art

[0002] The pan-seal is a high-performance seal with a special spring inside a U-shaped Teflon. The appropriate spring force plus the system fluid pressure pushes the sealing lip (surface) out and gently presses the sealed metal surface to produce a very excellent sealing effect. The actuation effect of the spring can overcome the slight eccentricity of the metal mating surface and the wear of the sealing lip, and continue to maintain the expected sealing performance.

[0003] In the prior art, under the condition that the depth of the sealing groove is relatively large, if the width of the sealing groove is relatively small, a single seal cannot meet the requirement of a large depth of the sealing groove, and the width of the sealing groove usually needs to be secondary processed to expand it, and the sealed workpiece needs to be modified, thereby changing the structural design of the sealed part, or using a wide-surface double-spring pan-plug seal for sealing, and the material cost consumed during the production will increase exponentially, the cost is high, and the production and installation are complicated. Utility Model Content

[0004] The utility model mainly provides a large-opening flood seal which can achieve a sealing effect without changing the size of a sealing groove and is simple to manufacture and install.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a large-opening pan-plug seal, comprising a sealing jacket and a spring, wherein the sealing jacket comprises an outer sealing arm, a jacket body and an inner sealing arm from the outside to the inside, a mounting groove is provided between the outer sealing arm and the inner sealing arm near the lip, the spring is installed in the mounting groove, a spring straight contact end is provided on the jacket body on the side of the mounting groove away from the lip, an outer lip body block is provided on the outer sealing arm near the lip and facing inward, and an inner lip body block is provided on the inner sealing arm near the lip and facing inward.

[0006] Preferably, an outer lip right-angle contact end is provided between the mounting groove and the outer lip body block, and an inner lip right-angle contact end is provided between the mounting groove and the inner lip body block. The outer lip right-angle contact end and the outer lip body block can support the spring, and the inner lip right-angle contact end and the inner lip body block can support the spring.

[0007] Preferably, the cross section of the mounting groove is a trapezoidal groove structure, the outer sealing arm and the inner sealing arm are of equal length, and the outer sealing arm and the inner sealing arm can seal the sealing surface under the action of a spring.

[0008] Preferably, a groove surface contact end is provided on one side of the spring, and the straight line contact end of the spring is provided in contact with the groove surface contact end on the spring. The spring contacts the straight line contact end of the spring through the groove surface contact end on one side thereof, so that the spring is installed in the installation groove. The spring is a special structure of an independent bracket, which is used to provide initial sealing force.

[0009] Preferably, one end of the spring is arranged in contact with the right-angle contact end of the outer lip body, and the other end of the spring is arranged in contact with the right-angle contact end of the inner lip body. The right-angle contact end of the outer lip body and the right-angle contact end of the inner lip body can stabilize the spring in the installation groove.

[0010] Preferably, the jacket body, outer sealing arm and outer lip block are integrally formed, the jacket body, inner sealing arm and inner lip block are integrally formed, the pan-seal is composed of a sealing jacket and a spring of special structure, and the sealing jacket plays a supporting role.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, the pan-plug seal is composed of a sealing jacket and a spring of a special structure. The sealing jacket plays a supporting role, and the spring is a special structure of an independent bracket for providing an initial sealing force. During the use of the pan-plug seal, when the system has no pressure, the pan-plug seal is provided with an initial sealing force by the spring, so that the lip of the sealing jacket is closely attached to the working surface to prevent low-pressure leakage. When the system has pressure, the medium pressure acts in all directions in the pan-plug seal groove, so that the lip is closely attached to the sealing surface, so that the pan-plug seal has the advantages of large shrinkage and large sealing force.

[0013] 2. In the utility model, the flood seal can adapt to low temperature working conditions and is very suitable for grooves with increased depth. The sealing effect can be achieved without changing the size of the sealing groove, and the production cost is relatively low and the installation is easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A cross-sectional schematic diagram of a large-opening pan seal is provided for the utility model;

[0015] Figure 2 A cross-sectional view of a sealing jacket with a large opening and a pan-seal seal is provided for the utility model;

[0016] Figure 3 The utility model provides a cross-sectional view of a spring with a large opening and a pan-seal.

[0017] Legend: 1. Sealing jacket; 2. Spring; 3. Jacket body; 4. External sealing clamp arm; 5. External lip clamp block; 6. External lip right-angle contact end; 7. Internal sealing clamp arm; 8. Internal lip clamp block; 9. Internal lip right-angle contact end; 10. Spring straight line contact end; 11. Mounting groove; 12. Groove surface contact end. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] See also Figure 1-Figure 3 The utility model provides a technical solution: a large-opening pan-plug seal, comprising a sealing jacket 1 and a spring 2, wherein the sealing jacket 1 comprises an outer sealing clamp arm 4, a jacket body 3 and an inner sealing clamp arm 7 from the outside to the inside, a mounting groove 11 is arranged between the outer sealing clamp arm 4 and the inner sealing clamp arm 7 near the lip, the spring 2 is installed in the mounting groove 11, a spring straight contact end 10 is arranged on the jacket body 3 on the side of the mounting groove 11 away from the lip, an outer lip body clamp block 5 is arranged on the outer sealing clamp arm 4 near the lip and facing the inside, and an inner lip body clamp block 8 is arranged on the inner sealing clamp arm 7 near the lip and facing the inside.

[0021] like Figure 2 As shown, an outer lip right-angle contact end 6 is arranged between the mounting groove 11 and the outer lip block 5, and an inner lip right-angle contact end 9 is arranged between the mounting groove 11 and the inner lip block 8. The outer lip right-angle contact end 6 and the outer lip block 5 can support the spring 2, and the inner lip right-angle contact end 9 and the inner lip block 8 can support the spring 2.

[0022] like Figure 2 As shown, the cross section of the installation groove 11 is a trapezoidal groove structure, the outer sealing arm 4 and the inner sealing arm 7 are of equal length, and the outer sealing arm 4 and the inner sealing arm 7 can seal the sealing surface under the action of the spring 2.

[0023] like Figure 2 and Figure 3As shown, a groove surface contact end 12 is provided on one side of the spring 2, and the spring straight contact end 10 is provided in contact with the groove surface contact end 12 on the spring 2. The spring 2 contacts the spring straight contact end 10 through the groove surface contact end 12 on one side thereof, so that the spring 2 is installed in the installation groove 11. The spring 2 is a special structure of an independent bracket, which is used to provide an initial sealing force.

[0024] like Figure 1 and Figure 2 As shown, one end of the spring 2 is arranged in contact with the outer lip right-angle contact end 6, and the other end of the spring 2 is arranged in contact with the inner lip right-angle contact end 9. The outer lip right-angle contact end 6 and the inner lip right-angle contact end 9 can stabilize the spring 2 in the installation groove 11.

[0025] like Figure 2 As shown, the jacket body 3, the outer sealing arm 4 and the outer lip body block 5 are integrally formed, the jacket body 3, the inner sealing arm 7 and the inner lip body block 8 are integrally formed, and the pan-seal is composed of a sealing jacket 1 and a spring 2 of a special structure, and the sealing jacket 1 plays a supporting role.

[0026] The use method and working principle of the device: The pan-seal is composed of a sealing jacket 1 and a spring 2 of a special structure. The sealing jacket 1 plays a supporting role. The spring 2 is a special structure of an independent bracket for providing an initial sealing force. The spring 2 is installed in the installation groove 11. One end of the spring 2 contacts the right-angle contact end 6 of the outer lip body, and the other end of the spring 2 contacts the right-angle contact end 9 of the inner lip body.

[0027] During the use of the pan-plug seal, when the system has no pressure, the pan-plug seal is provided with an initial sealing force by the spring 2, so that the lip of the sealing jacket 1 is closely attached to the working surface to prevent low-pressure leakage. When the system has pressure, the medium pressure acts in all directions in the pan-plug seal groove, so that the lip is closely attached to the sealing surface. A pan-plug seal with a large opening in the utility model is a pan-plug seal that can adapt to grooves with greater depths. The pan-plug seal has the following advantages: large shrinkage, large sealing force, adaptability to low-temperature working conditions, and is very suitable for grooves with increased depths. The sealing effect can be achieved without changing the size of the sealing groove, and the manufacturing cost is relatively low and the installation is easier.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A large-opening pan seal. It is characterized in that The invention comprises a sealing jacket (1) and a spring (2), wherein the sealing jacket (1) comprises, from the outside to the inside, an outer sealing clamp arm (4), a jacket body (3) and an inner sealing clamp arm (7), a mounting groove (11) is provided between the outer sealing clamp arm (4) and the inner sealing clamp arm (7) at a position close to the lip, the spring (2) is installed in the mounting groove (11), a spring straight contact end (10) is provided on the jacket body (3) at a side of the mounting groove (11) away from the lip, and the outer sealing clamp arm (4) is close to the lip. An outer lip body block (5) is arranged at a position near the lip opening and facing inward, an inner lip body block (8) is arranged at a position near the lip opening and facing inward of the inner sealing arm (7), an outer lip body right-angle contact end (6) is arranged between the mounting groove (11) and the outer lip body block (5), an inner lip body right-angle contact end (9) is arranged between the mounting groove (11) and the inner lip body block (8), the mounting groove (11) has a trapezoidal groove structure in cross section, and the outer sealing arm (4) and the inner sealing arm (7) are of equal length.

2. A large-opening flood seal according to claim 1, Features: A groove surface contact end (12) is provided on one side of the spring (2), and the spring straight line contact end (10) is arranged in contact with the groove surface contact end (12) on the spring (2).

3. A large-opening flood seal according to claim 1, Features: One end of the spring (2) is arranged in contact with the right-angle contact end (6) of the outer lip body, and the other end of the spring (2) is arranged in contact with the right-angle contact end (9) of the inner lip body.

4. A large-opening flood seal according to claim 1, Features: The jacket body (3), the outer sealing clamp arm (4) and the outer lip clamp block (5) are integrally formed, and the jacket body (3), the inner sealing clamp arm (7) and the inner lip clamp block (8) are integrally formed.

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