Parallel sliding type expansion joint

Abstract

The utility model relates to the technical field of expansion joints, in particular to a parallel sliding type expansion joint which comprises an inner pipe, an outer pipe and an airtight assembly, and the airtight assembly comprises a connecting plate, a circular ring, a sealing ring, a piston, a sealing gasket, a first flange, a second flange and a reinforcing mechanism. The exposed length of the inner pipe is adjusted by sliding the inner pipe on the inner side of the outer pipe, so that the device is adjusted to the needed length, when the device is used, the piston is sleeved on the inner pipe in a sliding mode, the exposed length of the inner pipe is judged according to the position of the piston sleeved on the inner pipe, and the inner pipe is slid after sleeving to enable the sealing gasket on the piston to be attached to the sealing gasket on the circular ring. Fluid enters the next stage through the inner pipe after entering the outer pipe, the airtightness between the inner pipe and the outer pipe is improved through the sealing gasket and the piston, the first flange and the second flange are used for device installation and connection, and the stability of the joint of the inner pipe and the outer pipe is improved through the reinforcing mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, in particular to a parallel sliding expansion joint. Background Art

[0002] Expansion joints are mainly used during installation and maintenance. They are adjusted according to the on-site installation dimensions. When working, they can transmit the axial thrust back to the entire piping system.

[0003] The existing expansion joint is formed by sliding the inner tube on the inner side of the outer tube to form a telescopic hollow tube, and then a flange is fixed at the end for installation and connection. A piston is provided on the outer side of the inner tube to increase the sealing between the inner tube and the outer tube. After installation, sealant is applied to the connection between the outer tube and the inner tube to further improve the sealing.

[0004] However, in the actual use of the above utility model, the sealant will age over time, resulting in leakage in the joint. Utility Model Content

[0005] The utility model aims to provide a parallel sliding expansion joint, aiming at solving the problem that in the actual use process of the existing device, the sealant will age over time, resulting in leakage of the joint.

[0006] To achieve the above object, the utility model provides a parallel sliding expansion joint, comprising an inner tube, an outer tube and an airtight component, wherein the airtight component comprises a connecting plate, a circular ring, a sealing ring, a piston, a sealing gasket, a first flange, a second flange and a reinforcement mechanism;

[0007] The first flange is fixedly connected to the inner tube and is located on one side of the inner tube, the second flange is fixedly connected to the outer tube and is located on one side of the outer tube, the ring is fixedly connected to the outer tube and is located at one end of the outer tube, the inner tube passes through the outer tube, the sealing ring is fixedly connected to the ring and is located on one side of the ring, the piston is slidably connected to the inner tube and is located on one side of the inner tube, the sealing gasket is fixedly connected to the piston and is located on one side of the piston, the connecting plate is fixedly connected to the inner tube and is located on one side of the inner tube, and the reinforcement mechanism is connected to the connecting plate, connected to the outer tube, and located on one side of the outer tube.

[0008] Among them, the reinforcement mechanism includes bolts, mounting plates and nuts, the mounting plate is fixedly connected to the outer tube and is located on one side of the outer tube, the bolts penetrate the connecting plate and the mounting plate, and the nuts are threadedly connected to the bolts and are located on one side of the bolts.

[0009] Wherein, the airtight component also includes a plurality of mounting bolts and a plurality of fixing nuts, wherein the plurality of mounting bolts are respectively mounted on the first flange and the second flange, and the fixing nuts are threadedly connected to the mounting bolts and are located on one side of the mounting bolts.

[0010] Wherein, the airtight component also includes a screw and a mounting groove, the mounting groove is arranged on the piston, the screw is threadedly connected to the mounting groove and is located on the inner side of the mounting groove.

[0011] The airtight component further includes a first rubber ring and a second rubber ring, wherein the first rubber ring is fixedly connected to the first flange and located on the inner side of the first flange, and the second rubber ring is fixedly connected to the second flange and located on the inner side of the second flange.

[0012] The utility model discloses a parallel sliding expansion joint. The exposed length of the inner tube is adjusted by sliding the inner tube inside the outer tube, so that the device is adjusted to a required length. When using the device, the piston is slidably sleeved on the inner tube. The exposed length of the inner tube is judged by the position of the sleeve on the inner tube. After the sleeve is sleeved, the inner tube is slid to make the sealing gasket on the piston fit with the sealing gasket on the ring. After the fluid enters the outer tube, it enters the next stage through the inner tube. The air tightness between the inner tube and the outer tube is increased through the sealing gasket and the piston. The first flange and the second flange are used for device installation connection. The reinforcement mechanism increases the stability of the connection between the inner tube and the outer tube, which solves the problem that the sealant of the existing device will age over time during actual use, resulting in leakage of the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0014] Figure 1 It is a structural diagram of a parallel sliding expansion joint according to the first embodiment of the utility model.

[0015] Figure 2 It is a cross-sectional schematic diagram of a parallel sliding expansion joint according to the first embodiment of the utility model.

[0016] Figure 3 It is a cross-sectional schematic diagram of a parallel sliding expansion joint according to the second embodiment of the utility model.

[0017] 101-inner tube, 102-outer tube, 103-airtight component, 104-connecting plate, 105-circular ring, 106-sealing ring, 107-piston, 108-sealing gasket, 109-first flange, 110-second flange, 111-reinforcement mechanism, 112-bolt, 113-mounting plate, 114-nut, 115-mounting bolt, 116-fixing nut, 117-screw, 118-mounting groove, 201-first rubber ring, 202-second rubber ring. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0019] First embodiment

[0020] See also Figure 1-2 , Figure 1 It is a structural diagram of a parallel sliding expansion joint according to the first embodiment of the utility model. Figure 2 It is a cross-sectional schematic diagram of a parallel sliding expansion joint according to the first embodiment of the utility model.

[0021] The utility model provides a parallel sliding expansion joint: comprising an inner tube 101, an outer tube 102 and an airtight component 103, wherein the airtight component 103 comprises a connecting plate 104, a ring 105, a sealing ring 106, a piston 107, a sealing gasket 108, a first flange 109, a second flange 110, a reinforcing mechanism 111, a bolt 112, a mounting plate 113, a nut 114, a plurality of mounting bolts 115, a plurality of fixing nuts 116, a screw 117 and a mounting groove 118. The above-mentioned solution solves the problem that the sealant of the existing device will age over time during actual use, resulting in leakage of the joint.

[0022] In this embodiment, the exposed length of the inner tube 101 is adjusted by sliding the inner tube 101 inside the outer tube 102, so as to adjust the device to a required length.

[0023] Among them, the first flange 109 is fixedly connected to the inner tube 101 and is located on one side of the inner tube 101, the second flange 110 is fixedly connected to the outer tube 102 and is located on one side of the outer tube 102, the ring 105 is fixedly connected to the outer tube 102 and is located at one end of the outer tube 102, the inner tube 101 passes through the outer tube 102, the sealing ring 106 is fixedly connected to the ring 105 and is located on one side of the ring 105, the piston 107 is slidably connected to the inner tube 101 and is located on one side of the inner tube 101, the sealing gasket 108 is fixedly connected to the piston 107 and is located on one side of the piston 107, the connecting plate 104 is fixedly connected to the inner tube 101 and is located on one side of the inner tube 101, and the reinforcing mechanism 111 is connected to the connecting plate 104 and connected to the outer tube 102 , and is located on one side of the outer tube 102. When using the device, the piston 107 is slidably mounted on the inner tube 101, and the exposed length of the inner tube 101 is judged by the position of the piston on the inner tube 101. After the mounting, the inner tube 101 is slid to make the sealing gasket 108 on the piston 107 fit with the sealing gasket 108 on the ring 105. After the fluid enters the outer tube 102, it enters the next stage through the inner tube 101. The sealing gasket 108 and the piston 107 increase the air tightness between the inner tube 101 and the outer tube 102. The first flange 109 and the second flange 110 are used for device installation connection. The reinforcement mechanism 111 increases the stability of the connection between the inner tube 101 and the outer tube 102, which solves the problem that the sealant of the existing device will age over time during actual use, resulting in leakage of the joint.

[0024] Secondly, the mounting plate 113 is fixedly connected to the outer tube 102 and is located on one side of the outer tube 102. The bolt 112 passes through the connecting plate 104 and the mounting plate 113. The nut 114 is threadedly connected to the bolt 112 and is located on one side of the bolt 112. The bolt 112 passes through the mounting plate 113 and the connecting plate 104, and then the nut 114 positions the bolt 112. By arranging a plurality of the reinforcement mechanisms 111 on the outside of the outer tube 102, the bolt 112 serves as a reinforcement rib to increase the stability of the device during use.

[0025] Again, a plurality of the mounting bolts 115 are respectively installed on the first flange 109 and the second flange 110, and the fixing nuts 116 are threadedly connected to the mounting bolts 115 and are located on one side of the mounting bolts 115. When the first flange 109 and the second flange 110 are installed, the mounting bolts 115 pass through the connected pipes and the first flange 109 or the second flange 110, and then the fixing nuts 116 are used to fix the positions.

[0026] Finally, the mounting groove 118 is arranged on the piston 107, the screw 117 is threadedly connected to the mounting groove 118 and is located on the inner side of the mounting groove 118, and the mounting groove 118 is used to provide an installation position for the screw 117. After the position of the piston 107 is determined, the position of the piston 107 is fixed on the inner tube 101 by the screw 117.

[0027] When using a parallel sliding expansion joint of the utility model, the exposed length of the inner tube 101 is adjusted by sliding the inner tube 101 inside the outer tube 102, so as to adjust the device to a required length. When using the device, the piston 107 is slidably mounted on the inner tube 101, and the exposed length of the inner tube 101 is judged by the position of the piston on the inner tube 101. After the mounting, the inner tube 101 is slid to make the sealing gasket 108 on the piston 107 fit with the sealing gasket 108 on the ring 105. After the fluid enters the outer tube 102, it enters the next stage through the inner tube 101. The gasket 108 and the piston 107 increase the air tightness between the inner tube 101 and the outer tube 102. The first flange 109 and the second flange 110 are used for device installation connection. The reinforcement mechanism 111 increases the stability of the connection between the inner tube 101 and the outer tube 102, which solves the problem that the sealant of the existing device will age over time during actual use, resulting in leakage of the joint.

[0028] Second embodiment

[0029] See also Figure 3 , Figure 3 It is a cross-sectional schematic diagram of a parallel sliding expansion joint of the second embodiment of the utility model. Based on the first embodiment, the airtight component 103 of the parallel sliding expansion joint of the utility model further includes a first rubber ring 201 and a second rubber ring 202 .

[0030] The first rubber ring 201 is fixedly connected to the first flange 109 and is located on the inner side of the first flange 109. The second rubber ring 202 is fixedly connected to the second flange 110 and is located on the inner side of the second flange 110. The first rubber ring 201 increases the air tightness when the first flange 109 is connected, and the second rubber ring 202 increases the air tightness when the second flange 110 is connected.

[0031] The above disclosure is only a preferred embodiment of a parallel sliding expansion joint of the utility model, and it certainly cannot be used to limit the scope of rights of the utility model. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment are implemented, and equivalent changes made according to the claims of the utility model still fall within the scope covered by the utility model.

Claims

1. A parallel sliding expansion joint, comprising an inner tube and an outer tube, wherein the inner tube and the outer tube are slidably connected and located on the inner side of the outer tube, characterized in that: Also included is an airtight assembly, which includes a connecting plate, a circular ring, a sealing ring, a piston, a sealing gasket, a first flange, a second flange and a reinforcement mechanism; The first flange is fixedly connected to the inner tube and is located on one side of the inner tube, the second flange is fixedly connected to the outer tube and is located on one side of the outer tube, the ring is fixedly connected to the outer tube and is located at one end of the outer tube, the inner tube passes through the outer tube, the sealing ring is fixedly connected to the ring and is located on one side of the ring, the piston is slidably connected to the inner tube and is located on one side of the inner tube, the sealing gasket is fixedly connected to the piston and is located on one side of the piston, the connecting plate is fixedly connected to the inner tube and is located on one side of the inner tube, and the reinforcement mechanism is connected to the connecting plate, connected to the outer tube, and located on one side of the outer tube.

2. A parallel sliding expansion joint according to claim 1, characterized in that: The reinforcement mechanism includes a bolt, a mounting plate and a nut. The mounting plate is fixedly connected to the outer tube and is located on one side of the outer tube. The bolt passes through the connecting plate and the mounting plate. The nut is threadedly connected to the bolt and is located on one side of the bolt.

3. A parallel sliding expansion joint as claimed in claim 2, characterized in that: The airtight assembly further comprises a plurality of mounting bolts and a plurality of fixing nuts. The plurality of mounting bolts are respectively mounted on the first flange and the second flange. The fixing nuts are threadedly connected to the mounting bolts and are located on one side of the mounting bolts.

4. A parallel sliding expansion joint as claimed in claim 3, characterized in that: The airtight component also includes a screw and a mounting groove, wherein the mounting groove is arranged on the piston, and the screw is threadedly connected to the mounting groove and is located at the inner side of the mounting groove.

5. A parallel sliding expansion joint as claimed in claim 4, characterized in that: The airtight assembly further includes a first rubber ring and a second rubber ring, wherein the first rubber ring is fixedly connected to the first flange and located on the inner side of the first flange, and the second rubber ring is fixedly connected to the second flange and located on the inner side of the second flange.

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