An adjustable rotating joint

Abstract

The present invention is applicable to the technical field of rotary joints, and provides an adjustable rotary joint, including a main shaft and a connecting shell, and also including: an annular connecting groove, a connecting cavity, a joint, a connecting assembly and a sealing mechanism; the annular connecting groove is arranged on the inner wall of the connecting shell, the connecting cavity is arranged on the main shaft, and the joint is threadedly connected to the connecting shell. The compression spring pushes the extrusion sleeve to move in the direction of the first cloth clamping ring and causes the extrusion sleeve to squeeze the first cloth clamping ring, so that the first cloth clamping ring is closely connected with the main shaft and the connecting shell, thereby preventing a gap between the main shaft and the connecting shell. When the first cloth clamping ring is worn and thinned, the compression spring pushes the extrusion sleeve and squeezes the first cloth clamping ring, so that the first cloth clamping ring is closely connected with the main shaft and the connecting shell, thereby reducing the number of times the equipment is sealed and debugged due to the first cloth clamping ring. The booster assembly further improves the sealing of the main shaft and the connecting shell by increasing the elastic potential energy of the compression spring through the main shaft.

Description

Technical Field

[0001] The invention belongs to the technical field of rotary joints, and in particular relates to an adjustable rotary joint. Background Art

[0002] The application fields of rotary joints cover almost all processing and manufacturing industries, such as: metallurgy, machine tools, power generation, petroleum, rubber, plastics, textiles, printing and dyeing, pharmaceuticals, cigarettes, papermaking, food, feed processing and drilling rig applications, etc.

[0003] The invention patent with publication number CN105864539A discloses an adjustable rotary joint, which is an important connector connecting the drilling rig and the mud pump. In order to avoid the problem of the mud in the channel hardening due to the long time of disassembling and installing the rotary joint, the drill rod cannot operate and move forward in the hole, and the entire construction project is scrapped, when water leakage occurs between the rotary joint and the main shaft due to the wear of the cloth clamping ring, the second step surface is driven to move by rotating the adjusting bolt, and the second step surface moves to squeeze the cloth clamping ring, thereby ensuring the sealing of the cloth clamping ring.

[0004] However, although this adjustment method reduces the number of times the cloth clamping ring and the rotary joint are replaced, the machine still needs to be stopped each time the pressure of the second step facing the cloth clamping ring is adjusted, thereby affecting the construction efficiency. Summary of the invention

[0005] The purpose of the embodiment of the present invention is to provide an adjustable rotary joint, aiming to solve the problem that each time the pressure of the second step facing the cloth clamping ring is adjusted, the machine still needs to be stopped, thereby affecting the construction efficiency.

[0006] The present invention is implemented as follows: an adjustable rotary joint includes a main shaft and a connecting shell, and also includes:

[0007] An annular connecting groove, a connecting cavity, a joint, a connecting assembly and a sealing mechanism;

[0008] The annular connection groove is arranged on the inner wall of the connection housing, the connection cavity is arranged on the main shaft, the joint is threadedly connected to the connection housing, and the joint is communicated with the annular connection groove, the main shaft and the connection housing are rotationally connected together through a connection assembly, and the sealing mechanism is used to seal the main shaft and the connection housing;

[0009] The sealing mechanism is provided with two groups, and the two groups of sealing mechanisms are respectively arranged at the two ends of the connecting shell, and the sealing mechanism comprises a sealing groove, a first cloth clamping ring, an extrusion sleeve, a compression spring, a pressure maintaining assembly, a boosting assembly and an adjusting assembly. The sealing groove is arranged on the inner side of the connecting shell, and the first cloth clamping ring, the extrusion sleeve, the compression spring, the pressure maintaining assembly, the boosting assembly and the adjusting assembly are all arranged in the sealing groove, and the extrusion sleeve is slidably connected in the sealing groove, the compression spring sleeve is arranged on the main shaft, one end of the compression spring is connected to the extrusion sleeve, the pressure maintaining assembly is used to limit the movement of the extrusion sleeve toward the two ends of the connecting shell, the boosting assembly increases the elastic potential energy of the compression spring through the main shaft, and the adjusting assembly is used to adjust the elastic potential energy of the compression spring.

[0010] According to a further technical solution, two groups of the connecting components are provided, and the two groups of the connecting components are respectively provided at two ends of the connecting shell.

[0011] According to a further technical solution, the connection assembly includes a limit block and a bearing, wherein the limit block is fixedly mounted on the main shaft, the bearing is fixedly mounted at the end of the connection housing, and the bearing is connected to the main shaft.

[0012] A further technical solution is that the adjustment assembly includes a first washer plate, a second cloth clamping ring, a second washer plate and a fastening screw, the first washer plate, the second cloth clamping ring and the second washer plate are all slidably connected in the sealing groove in sequence, the fastening screw is threadedly connected to the connecting shell, and the end of the fastening screw contacts the second washer plate, and the first washer plate is connected to the end of the compression spring.

[0013] A further technical solution is that the boost assembly includes a sliding ring, a driving ring, a friction ring, a spiral groove and a guide block, the sliding ring is slidably connected in the sealing groove, and the sliding ring is arranged between the second cloth clamping ring and the second gasket plate, the driving ring is rotatably connected in the sliding ring, the friction ring is fixedly installed in the driving ring, the guide block is fixedly installed on the inner side of the sliding ring, the spiral groove is arranged on the side wall of the driving ring, and the guide block is slidably connected in the spiral groove.

[0014] According to a further technical solution, the friction ring is made of elastic and wear-resistant material.

[0015] A further technical solution is that the pressure maintaining assembly includes an installation groove, a ratchet plate, a sliding groove, a sliding block, a limit block, a limit compression spring and a pull rod, the installation groove is arranged in the sealing groove, the ratchet plate is fixedly installed in the installation groove, the sliding groove is arranged on the extrusion sleeve, the sliding block is slidably connected in the sliding groove, the limit block and the pull rod are respectively fixedly installed at both ends of the sliding block, and the limit block is meshed with the ratchet plate, the limit compression spring is sleeved on the pull rod, and the two ends of the limit compression spring are respectively connected to the sliding block and the sliding groove.

[0016] An adjustable rotary joint provided by an embodiment of the present invention, when in use, the adjusting component is used to adjust the elastic potential energy of the compression spring, the compression spring pushes the extrusion sleeve to move in the direction of the first cloth clamping ring and causes the extrusion sleeve to squeeze the first cloth clamping ring, so that the first cloth clamping ring is closely connected with the main shaft and the connecting shell, thereby preventing a gap between the main shaft and the connecting shell, when the first cloth clamping ring is worn and thinned, the compression spring pushes the extrusion sleeve and squeezes the first cloth clamping ring, so that the first cloth clamping ring is closely connected with the main shaft and the connecting shell, thereby reducing the number of times the equipment is sealed and debugged due to the first cloth clamping ring, and the boosting component increases the elastic potential energy of the compression spring through the main shaft, thereby further improving the sealing of the main shaft and the connecting shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of an adjustable rotary joint provided in an embodiment of the present invention;

[0018] Figure 2 The embodiment of the present invention provides Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0019] Figure 3 The embodiment of the present invention provides Figure 2 Schematic diagram of the connection structure of the middle drive ring;

[0020] Figure 4 The embodiment of the present invention provides Figure 2 Schematic diagram of the enlarged structure of B.

[0021] In the drawings: spindle 101, connecting shell 102, annular connecting groove 103, connecting cavity 104, joint 105, limit block 106, bearing 107, sealing groove 201, first cloth clamping ring 202, extrusion sleeve 203, compression spring 204, first washer plate 205, second cloth clamping ring 206, second washer plate 207, fastening screw 208, pressure maintaining component 3, mounting groove 301, ratchet plate 302, sliding groove 303, sliding block 304, limit block 305, limit compression spring 306, pull rod 307, booster component 4, sliding ring 401, drive ring 402, friction ring 403, spiral groove 404, guide block 405. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0024] like Figure 1 and Figure 2As shown, an adjustable rotary joint provided by an embodiment of the present invention includes a main shaft 101 and a connecting housing 102, and further includes:

[0025] Annular connecting groove 103, connecting cavity 104, joint 105, connecting assembly and sealing mechanism;

[0026] The annular connection groove 103 is arranged on the inner wall of the connection housing 102, the connection cavity 104 is arranged on the main shaft 101, the joint 105 is threadedly connected to the connection housing 102, and the joint 105 is communicated with the annular connection groove 103, the main shaft 101 and the connection housing 102 are rotatably connected together through the connection assembly, and the sealing mechanism is used to seal the main shaft 101 and the connection housing 102;

[0027] The sealing mechanism is provided with two groups, and the two groups of sealing mechanisms are respectively arranged at the two ends of the connecting shell 102. The sealing mechanism includes a sealing groove 201, a first cloth clamping ring 202, an extrusion sleeve 203, a compression spring 204, a pressure maintaining component 3, a boosting component 4 and an adjustment component. The sealing groove 201 is arranged on the inner side of the connecting shell 102, the first cloth clamping ring 202, the extrusion sleeve 203, the compression spring 204, the pressure maintaining component 3, the boosting component 4 and the adjustment component are all arranged in the sealing groove 201, and the extrusion sleeve 203 is slidably connected in the sealing groove 201, the compression spring 204 is sleeved on the main shaft 101, one end of the compression spring 204 is connected to the extrusion sleeve 203, the pressure maintaining component 3 is used to limit the extrusion sleeve 203 from moving toward the two ends of the connecting shell 102, the boosting component 4 increases the elastic potential energy of the compression spring 204 through the main shaft 101, and the adjustment component is used to adjust the elastic potential energy of the compression spring 204.

[0028] In the embodiment of the present invention, when in use, the adjustment component is used to adjust the elastic potential energy of the compression spring 204. The compression spring 204 pushes the extrusion sleeve 203 to move in the direction of the first cloth clamping ring 202 and causes the extrusion sleeve 203 to squeeze the first cloth clamping ring 202, so that the first cloth clamping ring 202 is closely connected with the main shaft 101 and the connecting shell 102, thereby preventing a gap from existing between the main shaft 101 and the connecting shell 102. When the first cloth clamping ring 202 is worn and thinned, the compression spring 204 pushes the extrusion sleeve 203 and squeezes the first cloth clamping ring 202, so that the first cloth clamping ring 202 is closely connected with the main shaft 101 and the connecting shell 102, thereby reducing the number of times the equipment is sealed and debugged due to the first cloth clamping ring 202. The booster component 4 increases the elastic potential energy of the compression spring 204 through the main shaft 101, thereby further improving the sealing of the main shaft 101 and the connecting shell 102.

[0029] like Figure 1As shown, as a preferred embodiment of the present invention, the connecting components are provided with two groups, and the two groups of connecting components are respectively arranged at the two ends of the connecting shell 102, and the connecting components include a limit block 106 and a bearing 107, the limit block 106 is fixedly installed on the main shaft 101, the bearing 107 is fixedly installed at the end of the connecting shell 102, and the bearing 107 is connected to the main shaft 101.

[0030] In the embodiment of the present invention, the limit block 106 is fixedly installed on the main shaft 101 by screws. The limit block 106 limits the connection housing 102 from sliding left and right on the main shaft 101, and the bearing 107 allows the main shaft 101 and the connection housing 102 to rotate relative to each other.

[0031] like Figure 1 and Figure 2 As shown, as a preferred embodiment of the present invention, the adjustment assembly includes a first washer plate 205, a second cloth clamping ring 206, a second washer plate 207 and a fastening screw 208, the first washer plate 205, the second cloth clamping ring 206 and the second washer plate 207 are all slidably connected in the sealing groove 201 in sequence, the fastening screw 208 is threadedly connected to the connecting shell 102, and the end of the fastening screw 208 is in contact with the second washer plate 207, and the first washer plate 205 is connected to the end of the compression spring 204.

[0032] In the embodiment of the present invention, the fastening screw 208 is rotated, and the fastening screw 208 is matched with the thread of the connecting shell 102, so that the fastening screw 208 extends into the sealing groove 201, and then the elastic potential energy of the compression spring 204 is adjusted, so that the compression spring 204 squeezes the first cloth clamping ring 202 and the second cloth clamping ring 206 respectively. When the first cloth clamping ring 202 or the second cloth clamping ring 206 is worn and thinned, the compression spring 204 pushes the extrusion sleeve 203 and the first gasket plate 205 to squeeze the first cloth clamping ring 202 or the second cloth clamping ring 206, so that the first cloth clamping ring 202 or the second cloth clamping ring 206 is closely connected with the main shaft 101 and the connecting shell 102, thereby reducing the number of times the equipment is sealed and debugged due to the first cloth clamping ring 202 or the second cloth clamping ring 206.

[0033] like Figure 1-Figure 3As shown, as a preferred embodiment of the present invention, the booster assembly 4 includes a sliding ring 401, a driving ring 402, a friction ring 403, a spiral groove 404 and a guide block 405. The sliding ring 401 is slidably connected in the sealing groove 201, and the sliding ring 401 is arranged between the second cloth clamping ring 206 and the second gasket plate 207. The driving ring 402 is rotatably connected in the sliding ring 401, the friction ring 403 is fixedly installed in the driving ring 402, and the guide block 405 is fixedly installed on the inner side of the sliding ring 401. The spiral groove 404 is arranged on the side wall of the driving ring 402, the guide block 405 is slidably connected in the spiral groove 404, and the friction ring 403 is made of elastic and wear-resistant material.

[0034] In the embodiment of the present invention, the friction ring 403 is frictionally connected with the main shaft 101 through its own elastic force. When the main shaft 101 rotates, the friction ring 403 can be driven to rotate by the friction force, and the friction ring 403 drives the driving ring 402 to rotate. The driving ring 402 pushes the sliding ring 401 to slide in the sealing groove 201 through the spiral groove 404 and the guide block 405, so that the sliding ring 401 squeezes the second cloth clamping ring 206, so that the second cloth clamping ring 206 is sealed and connected with the main shaft 101 and the connecting housing 102, and the second cloth clamping ring 206 compresses the compression spring 204 through the first gasket plate 205, and the compression spring 204 pushes the extrusion sleeve 203 through the elastic force, and the extrusion sleeve 203 squeezes the first cloth clamping ring 202, thereby increasing the sealing performance of the main shaft 101 and the connecting housing 102. When the friction force between the friction ring 403 and the main shaft 101 is less than the elastic force of the compression spring 204, the friction ring 403 rotates relative to the main shaft 101.

[0035] like Figure 1 , Figure 2 and Figure 4 As shown, as a preferred embodiment of the present invention, the pressure maintaining assembly 3 includes a mounting groove 301, a ratchet plate 302, a sliding groove 303, a sliding block 304, a limit block 305, a limit compression spring 306 and a pull rod 307. The mounting groove 301 is arranged in the sealing groove 201, the ratchet plate 302 is fixedly installed in the mounting groove 301, the sliding groove 303 is arranged on the extrusion sleeve 203, the sliding block 304 is slidably connected in the sliding groove 303, the limit block 305 and the pull rod 307 are respectively fixedly installed at both ends of the sliding block 304, and the limit block 305 is meshed with the ratchet plate 302, the limit compression spring 306 is sleeved on the pull rod 307, and the two ends of the limit compression spring 306 are respectively connected to the sliding block 304 and the sliding groove 303.

[0036] In the embodiment of the present invention, when the extrusion sleeve 203 moves toward the side of the first cloth clamping ring 202 and squeezes the first cloth clamping ring 202, the ratchet plate 302 pushes the limit block 305 into the sliding groove 303 until the extrusion sleeve 203 stops moving, and the limit compression spring 306 pushes the sliding block 304 to move in the direction of the ratchet plate 302, so that the sliding block 304 pushes the limit block 305 to engage with the ratchet plate 302, thereby preventing the extrusion sleeve 203 from moving in the opposite direction, ensuring that the pressure on the first cloth clamping ring 202 will not be reduced, and ensuring the sealing of the main shaft 101 and the connecting shell 102.

[0037] The above embodiment of the present invention provides an adjustable swivel joint. When in use, the fastening screw 208 is rotated, and the fastening screw 208 is matched with the thread of the connecting shell 102 to extend the fastening screw 208 into the sealing groove 201, thereby adjusting the elastic potential energy of the compression spring 204, so that the compression spring 204 squeezes the first cloth clamping ring 202 and the second cloth clamping ring 206 respectively. When the first cloth clamping ring 202 or the second cloth clamping ring 206 is worn and thinned, the compression spring 204 squeezes the first cloth clamping ring 202 or the second cloth clamping ring 206 by pushing the extrusion sleeve 203 and the first washer plate 205. The second cloth clamping ring 206 makes the first cloth clamping ring 202 or the second cloth clamping ring 206 closely connected with the main shaft 101 and the connecting shell 102, thereby reducing the number of times the equipment is sealed and debugged due to the first cloth clamping ring 202 or the second cloth clamping ring 206. When the extrusion sleeve 203 moves toward the side of the first cloth clamping ring 202 and squeezes the first cloth clamping ring 202, the ratchet plate 302 pushes the limit block 305 into the sliding groove 303 until the extrusion sleeve 203 stops moving, and the limit compression spring 306 pushes the sliding block 304 to move in the direction of the ratchet plate 302, thereby The sliding block 304 pushes the limit block 305 to engage with the ratchet plate 302, thereby preventing the extrusion sleeve 203 from moving in the opposite direction, ensuring that the pressure on the first cloth clamping ring 202 will not be reduced, and ensuring the sealing of the main shaft 101 and the connecting shell 102. The friction ring 403 is frictionally connected with the main shaft 101 through its own elastic force. When the main shaft 101 rotates, the friction ring 403 can be driven to rotate by the friction force, and the friction ring 403 drives the driving ring 402 to rotate. The driving ring 402 pushes the sliding ring 401 in the sealing groove 204 through the spiral groove 404 and the guide block 405. 01, so that the sliding ring 401 squeezes the second cloth clamping ring 206, so that the second cloth clamping ring 206 is sealed and connected to the main shaft 101 and the connecting shell 102, and the second cloth clamping ring 206 compresses the compression spring 204 through the first gasket plate 205, and the compression spring 204 pushes the extrusion sleeve 203 through the elastic force, and the extrusion sleeve 203 squeezes the first cloth clamping ring 202 to increase the sealing of the main shaft 101 and the connecting shell 102. When the friction force between the friction ring 403 and the main shaft 101 is less than the elastic force of the compression spring 204, the friction ring 403 rotates relative to the main shaft 101.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable rotary joint, comprising a main shaft and a connecting shell, characterized in that: Also includes: An annular connecting groove, a connecting cavity, a joint, a connecting assembly and a sealing mechanism; The annular connection groove is arranged on the inner wall of the connection housing, the connection cavity is arranged on the main shaft, the joint is threadedly connected to the connection housing, and the joint is communicated with the annular connection groove, the main shaft and the connection housing are rotationally connected together through a connection assembly, and the sealing mechanism is used to seal the main shaft and the connection housing; The sealing mechanism is provided with two groups, and the two groups of sealing mechanisms are respectively arranged at the two ends of the connection shell, and the sealing mechanism comprises a sealing groove, a first cloth clamping ring, an extrusion sleeve, a compression spring, a pressure maintaining assembly, a pressurizing assembly and an adjusting assembly. The sealing groove is arranged on the inner side of the connection shell, and the first cloth clamping ring, the extrusion sleeve, the compression spring, the pressure maintaining assembly, the pressurizing assembly and the adjusting assembly are all arranged in the sealing groove, and the extrusion sleeve is slidably connected in the sealing groove, the compression spring sleeve is arranged on the main shaft, one end of the compression spring is connected to the extrusion sleeve, the pressure maintaining assembly is used to limit the movement of the extrusion sleeve to the two ends of the connection shell, the pressurizing assembly increases the elastic potential energy of the extrusion spring through the main shaft, and the adjusting assembly is used to adjust the elastic potential energy of the compression spring; The adjustment assembly comprises a first washer plate, a second cloth clamping ring, a second washer plate and a fastening screw, wherein the first washer plate, the second cloth clamping ring and the second washer plate are slidably connected in the sealing groove in sequence, the fastening screw is threadedly connected to the connecting housing, and the end of the fastening screw contacts the second washer plate, and the first washer plate is connected to the end of the compression spring; The booster assembly comprises a sliding ring, a driving ring, a friction ring, a spiral groove and a guide block, wherein the sliding ring is slidably connected in the sealing groove and is arranged between the second cloth clamping ring and the second gasket plate, the driving ring is rotatably connected in the sliding ring, the friction ring is fixedly installed in the driving ring, the guide block is fixedly installed on the inner side of the sliding ring, the spiral groove is arranged on the side wall of the driving ring, and the guide block is slidably connected in the spiral groove; The friction ring is made of elastic and wear-resistant material.

2. The adjustable rotary joint according to claim 1, characterized in that: The connection components are provided in two groups, and the two groups of connection components are respectively provided at two ends of the connection shell.

3. The adjustable rotary joint according to claim 2, characterized in that: The connection assembly comprises a limit block and a bearing, wherein the limit block is fixedly mounted on the main shaft, the bearing is fixedly mounted at the end of the connection housing, and the bearing is connected to the main shaft.

4. The adjustable swivel joint according to claim 1, characterized in that: The pressure maintaining assembly includes an installation groove, a ratchet plate, a sliding groove, a sliding block, a limit block, a limit compression spring and a pull rod. The installation groove is arranged in the sealing groove, the ratchet plate is fixedly installed in the installation groove, the sliding groove is arranged on the extrusion sleeve, the sliding block is slidably connected in the sliding groove, the limit block and the pull rod are respectively fixedly installed at both ends of the sliding block, and the limit block is meshed with the ratchet plate, the limit compression spring is sleeved on the pull rod, and the two ends of the limit compression spring are respectively connected to the sliding block and the sliding groove.

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