Sliding tensioning sealing structure

Abstract

The utility model discloses a sliding tensioning sealing structure which comprises a mandrel, a sleeve is connected to the mandrel in a sliding mode, a limiting table matched with the sleeve is fixedly connected to the mandrel, a locking mechanism used for fixing the sleeve is installed on the mandrel, a containing groove is formed between the mandrel and the sleeve, and a sliding flange matched with the containing groove is installed on the mandrel. A plurality of sealing mechanisms are installed on the sliding flange, a stop valve is detachably installed at the end, away from the locking structure, of the central spindle, the locking mechanism comprises a radial locking nut, and the central spindle is provided with tail end external threads matched with the radial locking nut. Compared with the prior art, the sliding tensioning sealing structure has the advantages that after a workpiece is formed, the workpiece does not need to be secondarily machined, the sliding tensioning sealing structure can be installed in the workpiece, sealing can be formed, the situation that the workpiece is damaged due to the fact that the workpiece is secondarily machined is avoided, the testing accuracy and efficiency can be improved, and the working efficiency is improved. And potential safety hazards caused by secondary processing are avoided.

Description

Technical Field

[0001] This utility model belongs to the field of sealing structure technology, specifically relating to a sliding tension sealing structure. Background Technology

[0002] With the rapid development of modern manufacturing, airtightness testing, as a key quality control method, plays an important role in ensuring product safety, improving product quality, and reducing energy consumption.

[0003] Traditional airtightness testing procedures are typically performed after product molding. The steps involve machining threads or grooves into the workpiece for testing, then connecting these structures to airtightness testing components to complete the test. However, for brittle materials, such as composite materials, the high modulus and processing pressure during molding often lead to problems like sample chipping, cracking, or breakage during secondary processing. This not only affects the accuracy and efficiency of the test but may also jeopardize the safety of the testing process.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a sliding tension sealing structure that can solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0007] A sliding tension sealing structure includes a mandrel, a sleeve slidably connected to the mandrel, a limiting platform matching the sleeve fixedly connected to the mandrel, a locking mechanism for fixing the sleeve installed on the mandrel, a receiving groove formed between the mandrel and the sleeve, a sliding flange matching the receiving groove installed on the mandrel, a plurality of sealing mechanisms installed on the sliding flange, and a shut-off valve detachably installed at the end of the mandrel away from the locking mechanism.

[0008] In one or more embodiments of this utility model, the locking mechanism includes a radial locking nut, and the spindle is provided with a tail end external thread that matches the radial locking nut. The radial locking nut is threaded onto the tail end external thread, and the radial locking nut cooperates with the limiting platform to lock the radial locking nut.

[0009] In one or more embodiments of the utility model, the sealing mechanism includes several sealing rings, several limit grooves matched with the sealing rings are set on the sliding flange, and the sealing ring is sleeved on the limit groove.

[0010] In one or more embodiments of the utility model, the outer diameter of the sealing ring is not less than the outer diameter of the limit groove.

[0011] In one or more embodiments of the utility model, the limit groove is provided with a taper surface, and the outer diameter of the limit groove gradually decreases towards one end of the sleeve.

[0012] In one or more embodiments of the utility model, a boss is formed between adjacent limit grooves, and a spacer sleeve is sleeved on the boss.

[0013] In one or more embodiments of the utility model, the outer diameter of the sealing ring is not less than the outer diameter of the sleeve.

[0014] In one or more embodiments of the utility model, a first end outer thread is set on the mandrel, a second inner thread is set on the inner wall of the sliding flange, and the sliding flange is threadedly connected with the mandrel through the first end outer thread and the second inner thread.

[0015] In one or more embodiments of the utility model, a polygonal stop is set on the mandrel, and a crank handle matched with the polygonal stop is installed on the mandrel.

[0016] In one or more embodiments of the utility model, a first inner thread is set on the inner wall of one end of the mandrel away from the tail end outer thread, an outer thread matched with the first inner thread is set on the stop valve, and the stop valve is threadedly connected on the mandrel through the cooperation of the first inner thread and the outer thread.

[0017] Compared with the prior art, the sliding expansion sealing structure of the utility model can be installed inside the workpiece after the workpiece is formed without the need for secondary processing of the workpiece, can form a seal, avoids the damage of the workpiece caused by secondary processing of the workpiece, is beneficial to improve the accuracy and efficiency of testing, and avoids the safety hazards caused by secondary processing. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0019] Figure 1It is the structure schematic view of the sliding expansion sealing structure in one embodiment of the utility model;

[0020] Figure 2 It is the sectional view of the sliding expansion sealing structure in one embodiment of the utility model;

[0021] Figure 3 It is the sectional view of the local structure of the sliding expansion sealing structure in one embodiment of the utility model Figure 1 ;

[0022] Figure 4 It is the sectional view of the local structure of the sliding expansion sealing structure in one embodiment of the utility model Figure 2 ;

[0023] Figure 5 It is the sectional view of the local structure of the sliding expansion sealing structure in one embodiment of the utility model Figure 3 ;

[0024] Figure 6 It is the installation schematic view of the sliding expansion sealing structure in one embodiment of the utility model.

[0025] Main figure mark explanation:

[0026] 1, mandrel;101, tail end outer thread;102, limit table;103, first end outer thread;104, first inner thread;2, radial locking nut;3, sleeve;4, sliding flange;401, second inner thread;402, limit groove;403, boss;5, stop valve;501, outer thread;6, handle;7, sealing ring;8, spacer;9, test workpiece. Specific implementation

[0027] In order to make the personnel in the technical field better understand the technical scheme in the utility model, the technical scheme in the embodiment of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiment of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor should belong to the protection scope of the utility model.

[0028] As Figures 1-2 The utility model discloses a sliding expansion sealing structure, including mandrel 1, the fixed connection of limit table 102 is established on mandrel 1, and the sleeve 3 is slidably connected on mandrel 1, and the locking mechanism is installed on, and the locking mechanism and limit table 102 cooperate to complete the fixing of sleeve 3.

[0029] Specifically, as Figures 1-3As shown in the drawings, the tail end of the mandrel 1 is provided with an outer thread 101 near the limiting platform 102, and the locking mechanism includes a radial locking nut 2 matched with the outer thread 101. The radial locking nut 2 is in threaded connection with the outer thread 101. The radial locking nut 2 is tightened on the outer thread 101 to fasten the sleeve 3 between the radial locking nut 2 and the limiting platform 102.

[0030] As shown in the drawings, Figures 1-3 The outer diameter of the radial locking nut 2 is smaller than the outer diameter of the sleeve 3.

[0031] As shown in the drawings, Figures 1-3 The mandrel 1 and the sleeve 3 form a receiving groove, and the mandrel 1 is provided with a sliding flange 4 matched with the receiving groove. The sliding flange 4 is provided with a sealing mechanism. The sliding expansion sealing structure is placed on the inner wall of the test workpiece 9 to realize the airtightness detection. The sealing mechanism can realize the sealing between the test workpiece 9 and the mandrel 1. Since the mandrel 1 and the sliding flange 4 are in threaded connection, the airtightness between the mandrel 1 and the sliding flange 4 can be ensured to a great extent. Therefore, the mandrel 1 is provided with a stop valve 5 for connecting the gas pipe and the pressure gauge. After the sliding expansion sealing structure is installed in the test workpiece 9, the airtightness test of the test workpiece 9 is realized by conveying gas into the stop valve 5, and the gas enters the test workpiece 9 through the mandrel 1.

[0032] As shown in the drawings, Figure 5 The inner wall of the end of the mandrel 1 away from the outer thread 101 is provided with a first inner thread 104, and the stop valve 5 is provided with an outer thread 501 matched with the first inner thread 104. The stop valve 5 is in threaded connection with the mandrel 1 through the cooperation of the first inner thread 104 and the outer thread 501.

[0033] As shown in the drawings, Figures 1-4 The sliding flange 4 is fixed to the mandrel 1 by threaded connection. The outer wall of the mandrel 1 is provided with a first end outer thread 103, and the inner wall of the sliding flange 4 is provided with a second inner thread 401 matched with the first end outer thread 103. The first end outer thread 103 and the second inner thread 401 are in threaded connection to realize the assembly of the mandrel 1 and the sliding flange 4.

[0034] It is worth noting that the threaded connection of the mandrel 1 and the sliding flange 4 and the threaded connection of the mandrel 1 and the stop valve 5 should ensure airtightness. The second inner thread 401, the first end outer thread 103, the first inner thread 104 and the outer thread 501 can be tapered threads, which can generate radial pressure when tightened to form a seal. A coating can also be provided on the surface of the second inner thread 401, the first end outer thread 103, the first inner thread 104 and the outer thread 501 to improve the airtightness of the threaded connection of the mandrel 1 and the sliding flange 4 and the threaded connection of the mandrel 1 and the stop valve 5.

[0035] AsFigures 1-4 As shown, the sealing mechanism includes several sealing rings 7, the sliding flange 4 is provided with a limiting groove 402 matched with the sealing ring 7, the sealing ring 7 is installed in the second internal thread 401, and the second internal thread 401 is tapered. The outer diameter gradually increases away from the sleeve 3. And the outer diameter of the sealing ring 7 is not less than the outer diameter of the second internal thread 401. When the sliding flange 4 is threadedly connected with the mandrel 1, the sliding flange 4 moves towards the receiving groove, and the sealing ring 7 contacts the sleeve 3. When the sliding flange 4 continues to move towards the receiving groove, the sealing ring 7 is deformed by external force, thereby being able to contact the outer wall of the test workpiece 9, and sealing is achieved.

[0036] As shown, Figures 1-4 In this embodiment, the number of limiting grooves 402 is two, and a boss 403 is formed between the two limiting grooves 402, and the spacer sleeve 8 is installed on the boss 403. The outer wall of the spacer sleeve 8 contacts the inner wall of the test workpiece 9. The outer diameter of the sliding flange 4 is not less than the outer diameter of the sleeve 3, and the spacer sleeve 8 can make the sliding flange 4 and the test workpiece 9 in interference fit. During the movement of the sliding flange 4 towards the receiving groove, the spacer sleeve 8 can apply pressure to the sealing ring 7 away from the sleeve 3, so that the sealing ring 7 away from the sleeve 3 can also be deformed.

[0037] As shown, Figures 1-2 The mandrel 1 is provided with a polygonal stop, and the mandrel 1 is provided with a handle 6 matched with the polygonal stop. When the handle 6 is rotated, the handle 6 rotates with the mandrel 1.

[0038] When the sliding expansion sealing mechanism is assembled, as shown, Figures 1-6 First, the sleeve 3 is sleeved on the mandrel 1, and the radial locking nut 2 is threadedly connected on the tail end external thread 101 to fix the sleeve 3. Then the sealing ring 7 and the spacer sleeve 8 are installed on the limiting groove 402 and the boss 403 respectively, and the sliding flange 4 is threadedly connected on the outer wall of the mandrel 1, so that the sealing ring 7 is close to the outer wall of the sleeve 3. Finally, the stop valve 5 and the handle 6 are installed on the mandrel 1, and finally the gas pipe and the pressure gauge connected on the stop valve 5 can be used.

[0039] When in use, the end of the assembled sliding expansion sealing mechanism away from the stop valve 5 is inserted into the test workpiece 9, and the spacer sleeve 8 and the sealing ring 7 matched with the inner wall of the test workpiece 9 are used, that is, the spacer sleeve 8 is used to make the sliding flange 4 and the test workpiece 9 in interference fit. Then the handle 6 is rotated, the handle 6 rotates with the mandrel 1, and the mandrel 1 rotates in the process of threadedly cooperating with the sliding flange 4, so that the sliding flange 4 moves towards one end of the receiving groove and contacts the sleeve 3. Through the sleeve 3, pressure is applied to the sealing ring 7, the sealing ring 7 moves along the direction of the limiting groove 402 and deforms, and finally the inner wall of the test workpiece 9 contacts the sealing ring 7, so that the sealing ring 7 forms a seal, and the gas tightness can be detected by pressing through the connected gas pipe and pressure gauge.

[0040] The sliding tensioning sealing mechanism can replace the sleeve 3, the sealing ring 7 and the spacer sleeve 8 according to the inner wall size of the test workpiece 9, replace the parts matched with the inner wall of the test workpiece 9, realize the sealing of the test workpiece 9 and the sliding tensioning sealing mechanism, and is beneficial to improving the applicability of the sliding tensioning sealing mechanism.

[0041] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0042] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A sliding bulging seal structure, characterized by, The utility model provides a kind of valve, including: mandrel, sleeve is slidably connected on the mandrel, limiting table matched with sleeve is fixedly connected on the mandrel, locking mechanism for fixing sleeve is installed on the mandrel; Accommodation groove is formed between the mandrel and the sleeve, sliding flange matched with accommodation groove is installed on the mandrel, and several groups of sealing mechanism are installed on the sliding flange; Stop valve is detachably installed on the end of the mandrel away from locking structure. The locking mechanism includes radial locking nut, tail end external thread matched with radial locking nut is opened on the mandrel, radial locking nut is threadedly connected on tail end external thread, and radial locking nut is locked by cooperating with limiting table.

2. A sliding bulging seal structure according to claim 1, wherein The sealing mechanism includes several sealing rings, several limiting grooves matched with sealing ring are opened on the sliding flange, and sealing ring is sleeved on limiting groove.

3. A sliding bulging seal structure according to claim 1, wherein The outer diameter of the sealing ring is not less than the outer diameter of the limiting groove.

4. A sliding bulging seal structure according to claim 3, wherein The limiting groove is provided with taper surface, and the outer diameter of the limiting groove gradually decreases towards the end of the sleeve.

5. A sliding bulging seal structure according to claim 4, wherein Boss is formed between adjacent limiting grooves, and spacer sleeve is sleeved on the boss.

6. A sliding expansion seal according to any one of claims 3 to 5, wherein the seal is formed from a material having a Shore A hardness of 60 to 90. The outer diameter of the sealing ring is not less than the outer diameter of the sleeve.

7. A sliding bulging seal structure according to claim 6, wherein First end external thread is opened on the mandrel, second internal thread is opened on the inner wall of the sliding flange, and the sliding flange is threadedly connected with the mandrel through first end external thread and second internal thread.

8. A sliding bulging seal structure according to claim 1, wherein The mandrel is provided with polygonal stop, and handle matched with polygonal stop is installed on the mandrel.

9. A sliding bulging seal structure according to claim 1, wherein First internal thread is opened on the inner wall of the end of the mandrel away from tail end external thread, external thread matched with first internal thread is opened on the stop valve, and the stop valve is threadedly connected on the mandrel through first internal thread and external thread.

10. A sliding bulging seal structure according to claim 1, wherein ​

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