A ball valve type bellows assembly and its installation process

Abstract

The present invention belongs to the technical field of pipe fittings, and particularly relates to a ball valve type bellows assembly and an installation process thereof, comprising a bellows, one end of which is connected to a ball valve, and the other end of which is connected to a threaded joint, and a pipe sleeve assembly is arranged at the end of the ball valve close to the bellows, and a plug-in cavity is opened, and a pipe core assembly is arranged at the end of the bellows close to the ball valve, and is inserted into the plug-in cavity and clamped with the pipe sleeve assembly, and a sealing gasket is installed on the axial inner wall of the plug-in cavity, which is used for the sealing connection between the pipe sleeve assembly and the pipe core assembly; by arranging the pipe core assembly at one end of the bellows, arranging the pipe sleeve assembly that is adapted to be clamped therewith at one end of the ball valve, and adopting the plug-in cavity and inserting the pipe core assembly into the plug-in cavity for connection, the convenience is effectively improved, the disassembly and assembly between the ball valve and the bellows is facilitated, and the cost of repairing and replacing the bellows and the sealing gasket is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe fittings, and in particular relates to a ball valve type bellows assembly and an installation process thereof. Background Art

[0002] The bellows is a tubular elastic sensitive element formed by connecting foldable corrugated sheets along the folding and stretching direction. In order to connect the two ends of the bellows, a connector is provided. In order to further achieve adjustable flow in the bellows, a ball valve is used to connect the connector at one end.

[0003] The existing bellows and ball valves usually use a fixed connection, such as a new type of bellows disclosed in Chinese patent application No. (CN201620108111.9), which may cause leakage at the connection due to deformation or aging and damage of the rubber gasket. Since it is fastened by force, users cannot repair it and usually directly replace the ball valve type bellows assembly. Due to the high cost of the ball valve, this easily leads to a high manufacturing cost of the bellows assembly, and thus a high cost of maintenance and replacement, which needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a ball valve type bellows assembly and its installation process in order to solve the above-mentioned technical problems, so that users can also disassemble and assemble the ball valve and the bellows. When the bellows or the connection between the bellows and the ball valve leaks, there is no need to replace the entire ball valve type bellows assembly, thereby reducing maintenance costs and achieving a convenient effect.

[0005] In view of this, the present invention provides a ball valve type bellows assembly, comprising:

[0006] A bellows, one end of which is connected to a ball valve and the other end is connected to a threaded joint;

[0007] The pipe sleeve assembly is connected to one end of the ball valve close to the bellows and is provided with a plug-in cavity;

[0008] The tube core assembly is installed at one end of the bellows close to the ball valve and inserted into the plug-in cavity to be clamped with the tube sleeve assembly;

[0009] The sealing gasket is installed on the axial inner wall of the plug-in cavity and is used for sealing connection between the tube sleeve assembly and the tube core assembly.

[0010] In the above technical solution, further, the tube core assembly includes:

[0011] The cylinder is sleeved on one end of the corrugated pipe and is provided with an annular sliding groove axially facing one side of the sleeve assembly, and a sliding hole is provided on the inner wall of the annular sliding groove away from the axis;

[0012] The limit block is installed in the sliding hole, and a convex edge is provided on the inner wall of the sliding hole away from the axis of the cylinder body to prevent the limit block from sliding out;

[0013] The locking member is sleeved on the inner wall of the annular slide groove near the axis, and is slidably connected with the annular slide groove along the axial direction, and is used to push the limit block to move radially in the slide hole;

[0014] The inner wall of the plug-in cavity on the side close to the tube core assembly is bent toward the axis to form an annular protrusion, and is used to abut against the limit block to limit one end of the cylinder in the plug-in cavity.

[0015] In the above technical solution, further, the locking member includes:

[0016] The kit is provided with an annular groove for the limit block to be radially retracted to one side of the axis, and one end of the kit can extend an annular groove to abut against the sealing gasket;

[0017] The first spring is axially mounted on a side of the sleeve away from the sealing gasket, and two ends thereof are respectively in contact with the cylinder and the sleeve.

[0018] In the above technical solution, further:

[0019] A side of the sleeve close to the sealing gasket forms an abutment portion, and a side of the abutment portion close to the sealing gasket is provided with a plurality of annular convex teeth arranged at equal intervals.

[0020] In the above technical solution, further, it also includes:

[0021] A snap-fit ​​part is mounted on the surface of the tube core assembly and is linked with the kit;

[0022] When the limiting block cooperates with the annular protrusion, the elastic potential energy of the first spring and the elastic potential energy of the sealing gasket are in a balanced state, and after the balanced state is destroyed, the buckle can release the connection.

[0023] In the above technical solution, further, the fastener comprises:

[0024] The mounting frame is connected to the side of the kit away from the axis, and the cylinder is provided with a linear slide groove for the mounting frame to slide along its axial direction;

[0025] The hook part has one end hinged to the mounting frame and the other end bent toward one side of the cylinder to form a hook;

[0026] The overlap portion is mounted on the surface of the cylinder away from the axis and is engaged with the hook;

[0027] After the mounting frame moves axially along with the kit, the hook is separated from the overlapping portion.

[0028] In the above technical solution, further:

[0029] The end of the hook is arranged obliquely and is in point contact with the overlapping portion.

[0030] In the above technical solution, further, it also includes:

[0031] The triggering member is installed on the kit and is used to push the hook part to pop open after the hook is separated from the overlapping part.

[0032] In the above technical solution, further, the triggering member includes:

[0033] A clamping block is installed on a side of the clamping hook portion close to the cylinder;

[0034] One end of the second spring is sleeved on the clamping block, and the other end is in contact with the cylinder.

[0035] The present invention provides an installation process for a ball valve type bellows assembly, comprising the following steps:

[0036] S1: Take the appropriate ball valve and bellows, and place the sealing gasket in the plug-in cavity;

[0037] S2: Flip the hook part, and use the hook part as a lever to push the mounting frame and drive the kit to compress the first spring, so that the limit block corresponds to the annular groove and moves radially back toward the axis;

[0038] S3: insert the cylinder into the plug-in cavity, and release the hook portion after the limit block enters;

[0039] S4: The elastic potential energy of the first spring is released, and the assembly is pushed to move, and at the same time, the limit block is pushed out of the cylinder, the abutting portion abuts against the sealing gasket, and the limit block is forced to engage with the annular protrusion;

[0040] S5: The elastic potential energy of the first spring and the elastic potential energy of the sealing gasket are in a balanced state, the hook portion is turned over, and the second spring is compressed, so that the hook is engaged with the overlapping portion;

[0041] S6: When the elastic potential energy of the sealing gasket decreases due to long-term use, the equilibrium state is broken, and the first spring gradually pushes the kit to move toward the sealing gasket; and after the hook is separated from the overlapping part, the elastic potential energy of the second spring is released and pushes the hook part to jump open:

[0042] S7: Try to flip the hook part and make the hook engage with the overlapping part. When the hook and the overlapping part are reengaged, return to S6. When the hook and the overlapping part cannot be reengaged, enter S8.

[0043] S8: flip the hook part, and use the hook part as a leverage point to push the mounting frame and drive the kit to compress the first spring, so that the limit block corresponds to the annular groove and moves radially back toward the axis, and the cylinder is taken out of the plug-in cavity;

[0044] S9: After removing the old sealing gasket and inserting a new sealing gasket, repeat S2-S9.

[0045] The beneficial effects of the present invention are:

[0046] 1. By arranging a tube core assembly at one end of the bellows, arranging a tube sleeve assembly adapted to the bellows at one end of the ball valve, and adopting a plug-in cavity and inserting the tube core assembly into the plug-in cavity for connection, the convenience is effectively improved, the disassembly and assembly between the ball valve and the bellows is facilitated, and the cost of repairing and replacing the bellows and the sealing gasket is reduced.

[0047] 2. By adopting the setting of opening an annular groove in the cylinder, placing the locking piece in the annular groove, and applying force with the first spring, the stability of the clamping connection between the limit block and the annular protrusion is ensured, and the locking piece can always abut against the sealing gasket, further ensuring the sealing performance and reducing the occurrence of leakage.

[0048] 3. By setting a fastener on the specific surface of the tube core assembly and linking it with the kit in the locking piece, when the elastic potential energy of the sealing gasket changes, it will drive the kit and the fastener to change, and the fastener will be disconnected to give an alarm, which is convenient for the user to observe and judge whether the sealing gasket needs to be replaced.

[0049] 4. By adopting the setting of the snap fastener, it is also possible to detect whether it is a false alarm by re-snapping, and there is no impact on the overall sealing performance, which effectively improves the accurate understanding of the performance of the sealing gasket. At the same time, the snap fastener can also be used as a force point for turning the locking piece, effectively improving the convenience of disassembly and assembly of the connection between the ball valve and the bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a schematic diagram of the structure of the present invention;

[0051] Figure 2 It is a cross-sectional view of the internal structure of the present invention;

[0052] Figure 3 The present invention Figure 2 The enlarged view of point A in the middle;

[0053] Figure 4 The present invention Figure 3 The enlarged view of point B in the middle;

[0054] Figure 5 The present invention Figure 3 Enlarged view of point C in the middle;

[0055] Figure 6 It is a schematic diagram of the structure of the present invention after the hook and the overlapping portion are disconnected;

[0056] The markings in the figure are as follows: 1. bellows; 2. ball valve; 3. threaded joint; 4. sleeve assembly; 5. plug-in cavity; 50. annular protrusion; 6. tube core assembly; 60. cylinder; 61. annular slide groove; 62. slide hole; 63. limit block; 64. convex edge; 65. locking member; 650. kit; 6500. abutment portion; 6501. annular convex tooth; 651. annular groove; 652. first spring; 7. sealing gasket; 8. snap fastener; 80. mounting bracket; 81. linear slide groove; 82. hook portion; 820. hook; 83. overlap portion; 9. trigger member; 90. block; 91. second spring. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0058] Embodiment 1:

[0059] This embodiment provides a ball valve type bellows assembly, including:

[0060] A bellows 1, one end of which is connected to a ball valve 2, and the other end of which is connected to a threaded joint 3;

[0061] The pipe sleeve assembly 4 is connected to one end of the ball valve 2 close to the bellows 1 and is provided with a plug-in cavity 5;

[0062] The tube core assembly 6 is installed at one end of the bellows 1 close to the ball valve 2, and is inserted into the plug-in cavity 5 and clamped with the tube sleeve assembly 4;

[0063] The sealing gasket 7 is installed on the axial inner wall of the plug-in cavity 5 and is used for sealing connection between the tube sleeve assembly 4 and the tube core assembly 6;

[0064] Among them, the sealing gasket 7 can be made of rubber material, and the specific internal structure of the ball valve 2 is an existing mature technology and will not be repeated here, and the ball valve 2 and the bellows 1 can both be made of stainless steel.

[0065] It can be seen from the present embodiment that by arranging a tube core assembly 6 at one end of the bellows 1, arranging a tube sleeve assembly 4 adapted to be snap-fitted therewith at one end of the ball valve 2, and adopting a plug-in cavity 5 and inserting the tube core assembly 6 into the plug-in cavity 5 for connection, the convenience is effectively improved, the disassembly and assembly between the ball valve 2 and the bellows 1 is facilitated, and the cost of repairing and replacing the bellows 1 and the sealing gasket 7 is reduced.

[0066] Embodiment 2:

[0067] This embodiment provides a ball valve type bellows assembly, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The tube core assembly 6 includes:

[0068] The cylinder 60 is sleeved on one end of the corrugated tube 1 and is provided with an annular groove 61 axially facing the side of the sleeve assembly 4, and a sliding hole 62 is provided on the inner wall of the annular groove 61 away from the axis.

[0069] The limit block 63 is installed in the sliding hole 62, and a convex edge 64 is provided on the inner wall of the sliding hole 62 at one end away from the axis of the cylinder 60 to prevent the limit block 63 from sliding out;

[0070] The locking member 65 is sleeved on the inner wall of the annular slide groove 61 on the side close to the axis, and is slidably connected to the annular slide groove 61 along the axial direction, and is used to push the limit block 63 to move radially in the slide hole 62;

[0071] The inner wall of the plug-in cavity 5 near the tube core assembly 6 is bent toward the axis to form an annular protrusion 50, which is used to abut against the limit block 63 to limit one end of the cylinder 60 in the plug-in cavity 5;

[0072] At the same time, a plurality of limit blocks 63 are provided, and they can be spherical, and the cylinder 60 and the bellows 1 can be welded, and the inner diameter, outer diameter and sealing plate are assembled and welded.

[0073] It can be seen from this embodiment that by providing an annular groove 61 in the cylinder 60 and installing the locking member 65 in the annular groove 61, the locking member 65 is prevented from being affected by the external environment by adopting an internal manner, thereby ensuring the pushing of the locking member 65 on the limit block 63 and the stability of the clamping between the limit block 63 and the annular protrusion 50;

[0074] The convex edge 64 can prevent the limiting block 63 from sliding out of the sliding hole 62 , that is, during installation, it can prevent the limiting block 63 from sliding out of the sliding hole 62 , thereby improving the installation stability of the limiting block 63 .

[0075] Embodiment 3:

[0076] This embodiment provides a ball valve type bellows assembly, which, in addition to the technical solutions of the above embodiments, also has the following technical features, the locking member 65 includes:

[0077] The kit 650 is provided with an annular groove 651 for the limit block 63 to be radially withdrawn to one side of the axis, and one end of the annular groove 61 can be extended to abut against the sealing gasket 7;

[0078] The first spring 652 is axially mounted on a side of the sleeve 650 away from the sealing gasket 7 , and its two ends are respectively in contact with the cylinder 60 and the sleeve 650 .

[0079] It can be seen from this embodiment that by setting the locking member 65 as a set 650 and sleeved it in the annular slide groove 61, the stability of the movement of the set 650 can be improved, and the opening of the annular groove 651 facilitates the limit block 63 to return radially toward the axis, thereby releasing the clamping connection between the limit block 63 and the annular protrusion 50, which is convenient for disassembly and assembly;

[0080] At the same time, the first spring 652 is used to apply force to ensure the stability of the engagement between the limit block 63 and the annular protrusion 50, and the locking member 65 can always abut against the sealing gasket 7, further ensuring the sealing performance and reducing the occurrence of leakage.

[0081] Embodiment 4:

[0082] This embodiment provides a ball valve type bellows assembly, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0083] An abutting portion 6500 is formed on one side of the sleeve 650 close to the sealing gasket 7 , and a plurality of annular protruding teeth 6501 arranged at equal intervals are provided on one side of the abutting portion 6500 close to the sealing gasket 7 .

[0084] It can be seen from the present embodiment that by forming an abutment portion 6500 on the side of the kit 650 close to the sealing gasket 7, the contact area between the kit 650 and the sealing gasket 7 can be increased, thereby increasing the sealing area and ensuring the sealing performance. The provision of the annular convex tooth 6501 can facilitate the formation of a tortuous surface between the abutment portion 6500 and the sealing gasket 7, thereby further increasing the effective sealing area and improving the sealing performance.

[0085] Embodiment 5:

[0086] This embodiment provides a ball valve type bellows assembly, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including:

[0087] The buckle 8 is mounted on the surface of the tube core assembly 6 and is linked with the kit 650;

[0088] When the stop block 63 cooperates with the annular protrusion 50, the elastic potential energy of the first spring 652 and the elastic potential energy of the sealing gasket 7 are in a balanced state, and after the balanced state is destroyed, the buckle 8 can be released from connection;

[0089] Meanwhile, at least two snap fasteners 8 are provided.

[0090] It can be seen from the present embodiment that by adopting the buckle 8 and linking it with the kit 650, when the elastic potential energy of the first spring 652 and the elastic potential energy of the sealing gasket are in a balanced state, the buckle 8 is in a connected state, and when the elastic potential energy of the sealing gasket 7 is weakened due to aging or other reasons, the balanced state will be destroyed, and then the first spring 652 will push the kit 650 to move and disconnect the buckle 8. The state of the sealing gasket 7 can be understood by observing the buckle 8, which is convenient for timely replacement of the sealing gasket 7 to ensure the sealing performance;

[0091] And when the equilibrium state is destroyed, the kit 650 moves under the action of the first spring 652 and always abuts against the sealing gasket 7, thereby effectively ensuring the sealing performance. When the kit 650 always abuts against the sealing gasket 7, it can also prompt the limit block 63 to always abut against the annular protrusion 50, thereby effectively ensuring the stability of the clamping between the two.

[0092] Embodiment 6:

[0093] This embodiment provides a ball valve type bellows assembly, which, in addition to the technical solutions of the above embodiments, also has the following technical features, the buckle 8 includes:

[0094] The mounting frame 80 is connected to the side of the sleeve 650 away from the axis, and the cylinder 60 is provided with a linear slide groove 81 for the mounting frame 80 to slide along the axial direction thereof;

[0095] The hook portion 82 has one end hinged to the mounting frame 80 and the other end bent toward one side of the cylinder 60 to form a hook 820;

[0096] The overlap portion 83 is mounted on the surface of the cylinder 60 away from the axis and is engaged with the hook 820;

[0097] After the mounting frame 80 follows the kit 650 to generate axial movement, the hook 820 is separated from the overlap portion 83;

[0098] At the same time, an integrated structure is adopted between the mounting frame 80 and the kit 650, and the overlapping portion 83 is formed by extending and bending the sealing plate portion that constitutes the cylinder 60, and the linear slide groove 81 allows the mounting frame 80 to continue to move with the kit 650 after the equilibrium state is destroyed, and the distance dimension is slightly larger than the length dimension of the engaging part when the hook 820 and the overlapping portion 83 are in the engaged state, to ensure that the hook 820 can be released from the engaging portion 83.

[0099] It can be seen from the present embodiment that one end of the hook portion 82 is hingedly connected to the mounting frame 80, and the other end forms a hook 820 that is engaged with the overlap portion 83. When the mounting frame 80 moves with the kit 650, the engagement between the hook 820 and the overlap portion 83 is released, so that the hook portion 82 can be tilted along the hinged portion with the mounting frame 80, which is easy for the user to observe, and then understand that the elastic potential energy of the sealing gasket 7 is weakened, and replace it.

[0100] Furthermore, the connection and release of the fastener 8 is the connection and release of the fastening between the hook 820 and the overlap portion 83, which will not affect the sealing performance and the stability of the fastening, and can avoid affecting the sealing performance and the stability of the fastening while playing a warning effect;

[0101] At the same time, after the hook portion 82 is turned over, force can be applied to the hook 820 to push the kit 650 to compress the first spring 652, thereby improving the convenience of adjusting the kit 650 and facilitating the disassembly and assembly of the connection between the ball valve 2 and the bellows 1 without the need for tools;

[0102] At the same time, the hook 820 and the overlapping portion 83 are clamped together, and the hook portion 82 is hingedly connected to the mounting frame 80, so that after the hook 820 and the overlapping portion 83 are released due to an accident (such as vibration), the hook portion 82 can be manually moved to re-engage the hook 820 and the overlapping portion 83. Whether the hook and the overlapping portion 83 can be re-engaged can be used to determine whether the sealing gasket 7 needs to be replaced, which can facilitate and effectively detect erroneous removal of the clamping connection.

[0103] Embodiment 7:

[0104] This embodiment provides a ball valve type bellows assembly, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0105] The end of the hook 820 is arranged obliquely and is in point contact with the overlapping portion 83 .

[0106] It can be seen from this embodiment that by tilting the end of the hook 820, point contact is achieved between the hook 820 and the overlap portion 83, which effectively reduces the friction resistance between the two, avoids excessive friction resistance between the two and affects the movement of the kit 650, and ensures that the hook 820 and the overlap portion 83 are disconnected;

[0107] Furthermore, the trigger distance of the hook 820 and the overlap portion 83 in contact and engagement can be controlled by adjusting the size of the tilt angle, thereby ensuring the feasibility and adjustment effect of the aging detection feedback of the sealing gasket 7.

[0108] Embodiment 8:

[0109] This embodiment provides a ball valve type bellows assembly, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including:

[0110] The trigger member 9 is installed on the kit 650 and is used to push the hook portion 82 to pop open after the hook 820 is separated from the overlapping portion 83.

[0111] It can be seen from this embodiment that, by disposing the trigger member 9, the opening degree of the hook portion 82 after the hook 820 and the overlapping portion 83 are released from the engagement can be amplified, thereby improving the warning effect.

[0112] Embodiment 9:

[0113] This embodiment provides a ball valve type bellows assembly, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the trigger member 9 includes:

[0114] The clamping block 90 is mounted on a side of the clamping hook portion 82 close to the cylinder 60;

[0115] A second spring 91, one end of which is sleeved on the clamping block 90, and the other end of which is in contact with the cylinder 60;

[0116] The clamping block 90 and the clamping hook portion 82 are of an integrated structure.

[0117] It can be seen from the present embodiment that the clamping block 90 facilitates the installation of the second spring 91, thereby preventing the second spring 91 from falling off when the hook portion 82 is bounced open after the clamping hook 820 is released from the overlapping portion 83, thereby providing stability for the installation of the second spring 91. At the same time, it also facilitates the second spring 91 to be compressed by the clamping hook portion 82 again after the clamping hook portion 82 gives a false alarm, thereby prompting the clamping hook 820 to be engaged with the overlapping portion 83.

[0118] Embodiment 10:

[0119] This embodiment provides an installation process for a ball valve type bellows assembly, comprising the following steps:

[0120] S1: Take the matching ball valve 2 and bellows 1, and place the sealing gasket 7 in the plug-in cavity 5;

[0121] S2: Flip the hook portion 82 and use the hook portion 82 as a lever to push the mounting frame 80 and drive the sleeve 650 to compress the first spring 652, so that the limit block 63 corresponds to the annular groove 651 and moves radially back toward the axis;

[0122] S3: insert the cylinder 60 into the insertion cavity 5, and release the hook portion 82 after the stop block 63 enters;

[0123] S4: The elastic potential energy of the first spring 652 is released, and the sleeve 650 is pushed to move, and at the same time, the limiting block 63 is pushed out from the cylinder 60, and the abutting portion 6500 abuts against the sealing gasket 7, and the limiting block 63 is forced to engage with the annular protrusion 50;

[0124] S5: The elastic potential energy of the first spring 652 and the elastic potential energy of the sealing gasket 7 are in a balanced state, the hook portion 82 is turned over, and the second spring 91 is compressed, so that the hook 820 is engaged with the overlap portion 83;

[0125] S6: When the elastic potential energy of the sealing gasket 7 decreases due to long-term use, the equilibrium state is broken, and the first spring 652 gradually pushes the kit 650 to move toward the sealing gasket 7; and after the hook 820 is separated from the overlapping portion 83, the elastic potential energy of the second spring 91 is released, and pushes the hook portion 82 to jump away:

[0126] S7: Try to flip the hook portion 82 and make the hook 820 engage with the overlapping portion 83. When the hook 820 and the overlapping portion 83 are reengaged, return to S6. When the hook 820 and the overlapping portion 83 cannot be reengaged, enter S8.

[0127] S8: Flip the hook portion 82, and use the hook portion 82 as a lever to push the mounting frame 80 and drive the sleeve 650 to compress the first spring 652, so that the limit block 63 corresponds to the annular groove 651 and moves radially back toward the axis, and the cylinder 60 is removed from the insertion cavity 5;

[0128] S9: After removing the old sealing gasket 7 and inserting a new sealing gasket 7, repeat S2 to S9.

[0129] It can be seen from this embodiment that by connecting the ball valve 2 and the bellows 1 in a clamping manner that is easy to disassemble and assemble, it is avoided that when the bellows 1 or the connection between the bellows 1 and the ball valve 2 is damaged and needs to be replaced, the ball valve 2 does not need to be replaced, which effectively reduces the maintenance cost, and the user can also easily operate, thereby improving convenience;

[0130] At the same time, after the ball valve 2 is connected to the bellows 1, the first spring 652 and the sealing gasket 7 simultaneously exert force on the kit 650 and are in a balanced state. When the sealing gasket 7 ages, the elastic potential energy is reduced, thereby destroying the balanced state. Under the action of the first spring 652, the kit 650, the mounting frame 80 and the hook portion 82 are driven to move, causing the hook 820 to release the engagement with the overlap portion 83, thereby serving as a warning that the sealing gasket 7 needs to be replaced, which is convenient for the user to observe;

[0131] Furthermore, the hinge connection between the hook portion 82 and the mounting frame 80 can re-engage the hook portion 820 and the overlapping portion 83 by moving the hook portion 82 after the hook portion 820 is released from the locking state, and whether the hook portion 820 can be re-engaged with the overlapping portion 83 can be used to determine whether the alarm is a false alarm, thereby ensuring the accuracy of the alarm and the timeliness of the replacement of the sealing gasket 7.

[0132] The hook portion 82 after being turned around the installation hinge connection can also be used as a force application point, which is convenient for the user to apply force thereto, thereby causing the kit 650 to move, so that the limit block 63 corresponds to the annular groove 651, to release the clamping connection between the ball valve 2 and the bellows 1, without the need for additional tools, effectively improving the convenience of disassembly and assembly between the two.

[0133] Moreover, the engagement and disengagement of the hook 820 and the overlapping portion 83 will not affect the sealing performance of the sealing gasket 7 and the engagement between the limit block 63 and the annular protrusion 50. When a warning is given, the sealing performance and the stability of the engagement can be maintained. At the same time, the elastic potential energy of the first spring 652 can always push the kit 650 to abut against the sealing gasket 7, thereby causing the limit block 63 to maintain engagement with the annular protrusion 50, which can effectively ensure the sealing performance and the stability of the engagement between the ball valve 2 and the bellows 1.

[0134] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A ball valve type bellows assembly, characterized in that: include: A bellows (1) having a ball valve (2) connected to one end and a threaded joint (3) connected to the other end; A pipe sleeve assembly (4) is connected to one end of the ball valve (2) close to the bellows (1) and is provided with a plug-in cavity (5); The tube core assembly (6) is installed at one end of the bellows (1) close to the ball valve (2), and is inserted into the plug-in cavity (5) to be clamped with the tube sleeve assembly (4); A sealing gasket (7) is mounted on the axial inner wall of the insertion cavity (5) and is used for sealing the connection between the tube sleeve assembly (4) and the tube core assembly (6); The tube core assembly (6) comprises: The cylinder (60) is sleeved on one end of the corrugated tube (1) and is provided with an annular slide groove (61) axially facing the side of the sleeve assembly (4), and a slide hole (62) is provided on the inner wall of the annular slide groove (61) away from the axis. A limit block (63) is installed in the sliding hole (62), and a convex edge (64) is provided on the inner wall of the sliding hole (62) at one end away from the axis of the cylinder (60) to prevent the limit block (63) from sliding out; A locking member (65) is sleeved on the inner wall of the annular slide groove (61) on the side close to the axis, and is slidably connected to the annular slide groove (61) along the axial direction, and is used to push the limit block (63) to move radially in the slide hole (62); The inner wall of the plug-in cavity (5) on the side close to the tube core assembly (6) is bent toward the axis to form an annular protrusion (50), which is used to abut against a limit block (63) to limit one end of the cylinder (60) in the plug-in cavity (5); The locking member (65) comprises: The kit (650) is provided with an annular groove (651) for the limit block (63) to be radially retracted to one side of the axis, and one end of the kit can extend out of the annular groove (61) to abut against the sealing gasket (7); A first spring (652) is axially mounted on a side of the sleeve (650) away from the sealing gasket (7), and has two ends respectively abutting against the cylinder (60) and the sleeve (650); Among them, it also includes: A snap-fit ​​component (8) is mounted on the surface of the tube core assembly (6) and is linked to the kit (650); When the limit block (63) cooperates with the annular protrusion (50), the elastic potential energy of the first spring (652) and the elastic potential energy of the sealing gasket (7) are in a state of equilibrium, and after the equilibrium state is destroyed, the buckle (8) can be released from connection; The buckle (8) comprises: A mounting frame (80) is connected to a side of the kit (650) away from the axis, and a linear slide groove (81) is provided on the cylinder (60) for the mounting frame (80) to slide along its axial direction; A hook portion (82), one end of which is hingedly connected to the mounting frame (80), and the other end of which is bent toward one side of the cylinder (60) to form a hook (820); The overlapping portion (83) is mounted on a surface of the cylinder (60) away from the axis and is engaged with the hook (820); After the mounting frame (80) moves axially following the kit (650), the hook (820) and the overlapping portion (83) are separated.

2. The ball valve type bellows assembly according to claim 1, characterized in that: A side of the sleeve (650) close to the sealing gasket (7) forms an abutment portion (6500), and a side of the abutment portion (6500) close to the sealing gasket (7) is provided with a plurality of annular protruding teeth (6501) arranged at equal intervals.

3. The ball valve type bellows assembly according to claim 1, characterized in that: The end of the hook (820) is arranged obliquely and is in point contact with the overlapping portion (83).

4. The ball valve type bellows assembly according to claim 1, characterized in that: Also includes: The trigger member (9) is mounted on the kit (650) and is used to push the hook portion (82) to pop open after the hook (820) is separated from the overlapping portion (83).

5. The ball valve type bellows assembly according to claim 4, characterized in that: The triggering member (9) comprises: A clamping block (90) is mounted on a side of the clamping hook portion (82) close to the cylinder (60); The second spring (91) has one end sleeved on the clamping block (90) and the other end abutting against the cylinder (60).

6. An installation process for the ball valve type bellows assembly according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: Take the appropriate ball valve (2) and bellows (1), and place the sealing gasket (7) in the plug-in cavity (5); S2: flipping the hook portion (82), and using the hook portion (82) as a lever to push the mounting frame (80) and drive the kit (650) to compress the first spring (652), so that the limit block (63) corresponds to the annular groove (651) and moves radially back toward the axis; S3: inserting the cylinder (60) into the insertion cavity (5), and releasing the hook portion (82) after the stop block (63) enters; S4: the elastic potential energy of the first spring (652) is released, pushing the sleeve (650) to move, and at the same time pushing the limit block (63) to be ejected from the cylinder (60), so that the abutting portion (6500) abuts against the sealing gasket (7), and causes the limit block (63) to engage with the annular protrusion (50); S5: the elastic potential energy of the first spring (652) and the elastic potential energy of the sealing gasket (7) are in a balanced state, the hook portion (82) is turned over, and the second spring (91) is compressed, so that the hook (820) is engaged with the overlapping portion (83); S6: When the elastic potential energy of the sealing gasket (7) decreases due to long-term use, the equilibrium state is broken, and the first spring (652) gradually pushes the kit (650) to move toward the sealing gasket (7); After the hook (820) is separated from the overlapping portion (83), the elastic potential energy of the second spring (91) is released, and pushes the hook portion (82) to jump away: S7: Try to flip the hook portion (82) and make the hook (820) engage with the overlapping portion (83). When the hook (820) and the overlapping portion (83) are reengaged, return to S6. When the hook (820) and the overlapping portion (83) cannot be reengaged, enter S8. S8: flipping the hook portion (82), and using the hook portion (82) as a lever to push the mounting frame (80) and drive the kit (650) to compress the first spring (652), so that the limit block (63) corresponds to the annular groove (651) and moves radially back toward the axis, and the cylinder (60) is removed from the insertion cavity (5); S9: Remove the old sealing gasket (7), insert a new sealing gasket (7), and repeat S2-S9.

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