Pipeline anti-loose connecting structure for vacuum pump

Abstract

The utility model provides a pipeline anti-loose connecting structure for a vacuum pump. The pipeline anti-loose connecting structure comprises a corrugated pipe, the two ends of the corrugated pipe are fixedly communicated with end pipes; the two end pipes are respectively used for connecting a port of the vacuum pump and an external pipeline; the end, away from the corrugated pipe, of the end pipe is provided with a nest and an insertion pipe, and the insertion pipe is fixedly sleeved with a sealing sleeve. Embedding rings are arranged at one end of the port and one end of the external pipeline, and the embedding rings are connected with the embedding sleeves in a matched mode; a sealing piece is mounted on one side of the embedded ring; a plurality of positioning grooves which are distributed in an annular array are formed in the embedding ring, and a plurality of positioning inserting pieces which are distributed in an annular array are arranged on the embedding sleeve; a driving assembly is arranged on the end pipe and connected with the multiple positioning inserting pieces. All the positioning plug-ins can be synchronously driven to be inserted into or separated from the positioning grooves through the driving assembly, and rapid positioning and unlocking are achieved; the vacuum pump is suitable for occasions where the vacuum pump needs regular maintenance and frequent pipeline dismounting, effectively saves operation time, and improves maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump pipeline connection technology, and in particular to a pipeline anti-loosening connection structure for vacuum pumps. Background Technology

[0002] As a device used to extract gas from a confined space and create a vacuum environment, the sealing of the pipeline connections and the ease of disassembly and assembly directly affect the working efficiency and maintenance convenience of the vacuum pump.

[0003] Currently, the connection between vacuum pumps and external pipelines in existing technologies mostly uses flange connections. Flange connections require multiple bolts and nuts for fixing. During disassembly and assembly, each bolt needs to be tightened or loosened one by one, which is cumbersome, time-consuming, and labor-intensive. The inconvenience of flange connections is even more prominent in scenarios where vacuum pumps require regular maintenance and inspection and frequent disassembly and assembly of pipelines, which seriously affects maintenance efficiency.

[0004] Therefore, a pipe anti-loosening connection structure for vacuum pumps is provided to address the above-mentioned problems. Utility Model Content

[0005] This utility model provides a pipe anti-loosening connection structure for vacuum pumps to solve the technical problem of inconvenient pipe connection and disassembly.

[0006] This utility model solves the above-mentioned technical problems through the following technical solutions:

[0007] This utility model provides a pipe anti-loosening connection structure for a vacuum pump, including a corrugated pipe; both ends of the corrugated pipe are fixedly connected to an end pipe; the two end pipes are respectively used to connect the port of the vacuum pump and an external pipe; the end of the end pipe away from the corrugated pipe is provided with a nest and an insert, and a sealing sleeve is fixedly fitted on the outside of the insert; both the port end and the external pipe end are provided with a locking ring, and the locking ring is connected to the nest; a sealing element is installed on one side of the locking ring; multiple positioning grooves are provided on the locking ring in a ring array, and multiple positioning plugs are provided on the nest in a ring array; a driving assembly is provided on the end pipe, and the driving assembly is connected to the multiple positioning plugs; the driving assembly is used to drive the positioning plugs to insert into or leave the positioning grooves.

[0008] Preferably, the positioning plug includes a positioning post and an outer sleeve fixed to the outer wall of the nest. The outer sleeve is aligned with a through groove opened on the outer wall of the nest. The positioning post slides with the outer sleeve and the through groove, and one end of the positioning post extends out of the outer sleeve away from the nest. The positioning post is elastically connected to the outer wall of the nest through a first spring.

[0009] Preferably, a fixing ring is fixedly sleeved on the positioning post, the fixing ring is fixed to one end of the first spring, and the other end of the first spring is fixed to the outer wall of the nest.

[0010] Preferably, the driving component includes a translation section; the translation section is mounted on an end tube, and a plurality of first wedge blocks arranged in a circular array are mounted on the translation section, each of the plurality of first wedge blocks abutting against a second wedge block, and the second wedge block is fixed to one end of a positioning post.

[0011] Preferably, the translation part includes a threaded sleeve; the inner ring of the threaded sleeve is threadedly connected to the outer wall of the end tube; a circular cover is rotatably sleeved on the threaded sleeve, and the first wedge block is fixed on the inner wall of the circular cover; a guide is provided on the translation part.

[0012] Preferably, the guide includes a guide post fixed to one side of the nest; the circular cover has a guide hole, the guide post slides with the guide hole, and one end of the guide post is fixed with an end block.

[0013] Preferably, the sealing sleeve is an inflatable sealing ring, and the inflatable sealing ring is connected to an inflation / deflation mechanism.

[0014] Preferably, the inflation / deflation mechanism includes an air cylinder; a side groove is provided on one side of the nested part, the air cylinder is fixedly fitted into the side groove, a piston is fitted inside the air cylinder, a pressure column for the threaded sleeve side wall to be pushed is fixed on one side of the piston, a second spring is provided inside the air cylinder, and the inner walls of one side of the piston and one side of the air cylinder respectively abut against the two ends of the second spring.

[0015] Preferably, the nest and the tube are provided with a channel, the side wall of the air cylinder is provided with a connecting port and the connecting port is connected to one end of the channel, and the inner side of the inflation sealing ring is provided with an interface and the interface is fixedly connected to one end of the channel.

[0016] Preferably, the outer walls on both sides of the threaded sleeve are provided with clamping grooves for external wrenches to hold.

[0017] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0018] The positive and progressive effects of this utility model are as follows:

[0019] The aforementioned anti-loosening connection structure for vacuum pumps allows for simultaneous insertion and removal of all positioning inserts from the positioning slots via a drive assembly, enabling rapid positioning and unlocking. Operators only need to turn the threaded sleeve with a wrench to complete the entire connection or disassembly process, making it simple and convenient. It is particularly suitable for scenarios requiring regular maintenance and frequent pipe disassembly / reassembly of vacuum pumps, effectively saving operation time and improving maintenance efficiency.

[0020] This structure employs a dual sealing mechanism. Firstly, when the insert ring and nest are joined, the sealing element on the insert ring forms the first seal, preventing gas leakage from the connection point. Secondly, the sealing sleeve uses an inflatable sealing ring, equipped with an inflation / deflation mechanism. During pipe connection, the threaded sleeve moves and pushes against the pressure column, causing the inflatable sealing ring to inflate and expand, tightly fitting against the vacuum pump port and the inner wall of the external pipe, forming a second seal. This dual sealing mechanism effectively improves the sealing performance of the pipe connection, preventing leaks, ensuring the vacuum level of the vacuum pump during operation, and guaranteeing its operational stability. Furthermore, the inflation / deflation of the sealing ring and the positioning operation of the threaded sleeve are performed simultaneously, eliminating the need for additional steps and balancing sealing performance with ease of operation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0022] Figure 2 This is a schematic diagram of the overall planar structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the dome of this utility model;

[0024] Figure 4 This is a schematic diagram of the embedded ring structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure for mounting the interlocking ring of this utility model;

[0026] Figure 6 This is a cross-sectional view of the embedded ring mounting structure of this utility model;

[0027] Figure 7 This utility model Figure 6 Enlarged structural diagram of section A in the middle;

[0028] Figure 8 This is a schematic diagram of the internal structure of the side groove of this utility model.

[0029] Explanation of reference numerals in the attached figures

[0030] 1. Bellows; 2. End tube; 201. Nesting; 2011. Side groove; 202. Insert tube; 3. Threaded sleeve; 301. Clamping groove; 4. Round cover; 401. Guide hole; 5. Guide post; 501. End block; 6. Port; 7. External pipe; 8. First wedge block; 9. Second wedge block; 10. Positioning insert; 1001. Outer sleeve; 1002. Positioning post; 1003. Fixing ring; 1004. First spring; 11. Sealing sleeve; 1101. Interface; 1102. Channel; 1103. Air cylinder; 1104. Piston; 1105. Second spring; 1106. Connecting port; 1107. Pressure-bearing post; 12. Embedded ring; 1201. Positioning groove; 13. Seal. Detailed Implementation

[0031] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0032] like Figures 1-8 As shown, the anti-loosening connection structure for the pipeline of the vacuum pump includes a bellows 1; both ends of the bellows 1 are fixedly connected to an end pipe 2; the two end pipes 2 are respectively used to connect the port 6 of the vacuum pump and the external pipeline 7.

[0033] The end of the end tube 2 away from the corrugated tube 1 is provided with a nest 201 and an insertion tube 202, and a sealing sleeve 11 is fixedly sleeved on the outside of the insertion tube 202.

[0034] In practice, at the end of each end tube 2 away from the corrugated tube 1, a nest 201 and an insert tube 202 are made using an integral molding process, which eliminates the need for additional fixing and improves structural stability.

[0035] Both one end of the port 6 and one end of the external pipe 7 are provided with a retaining ring 12, and the retaining ring 12 is connected to the nest 201; a sealing element 13 is installed on one side of the retaining ring 12.

[0036] The insert ring 12 is installed by welding. The outer diameter of the insert ring 12 matches the inner diameter of the nest 201, allowing the insert ring 12 to be embedded inside the nest 201, achieving initial connection between the end pipe 2 and the port 6 of the vacuum pump and the external pipe 7. A seal 13 is fitted on the side of the insert ring 12 facing inwards from the nest 201; the seal 13 is preferably an O-ring. An annular groove adapted to the O-ring is formed on the insert ring 12. The O-ring is embedded in the groove, fitting tightly to ensure a first seal when the insert ring 12 is connected to the nest 201.

[0037] The insert ring 12 has multiple positioning slots 1201 arranged in a ring array, and the nest 201 has multiple positioning plugs 10 arranged in a ring array.

[0038] A drive component is provided on the end tube 2, and the drive component is connected to a plurality of positioning plugs 10; the drive component is used to drive the positioning plugs 10 to insert into or leave the positioning slot 1201.

[0039] The drive component is installed on the end tube 2 and is connected to multiple positioning plugs 10. It can synchronously drive the movement of all positioning plugs 10, so that they can be inserted into or removed from the positioning slot 1201 at the same time. The operator can position or unlock all positioning plugs 10 by operating the drive component, which greatly improves the efficiency of connection and disassembly.

[0040] When connecting the vacuum pump port 6 and the external pipe 7 using the above-described connection structure, the insert ring 12 is embedded in the nest 201, and the insertion tube 202 is inserted into the vacuum pump port 6 and the external pipe 7, providing a double seal through the sealing element 13 and the sealing sleeve 11. After completing the above operations, the positioning groove 1201 is aligned with the positioning plug 10. By synchronously driving all positioning plugs 10 into the corresponding positioning groove 1201, the positioning installation is completed. During disassembly, by driving all positioning plugs 10 away from the positioning groove 1201, the insert ring 12 is separated from the nest 201, and the insertion tube 202 is separated from the vacuum pump port 6 and the external pipe 7, disassembly is completed.

[0041] It should be noted that, in order to facilitate the alignment of the positioning groove 1201 with the positioning plug-in 10 after the insert ring 12 is inserted into the nest 201, a positioning rod can be provided on the side wall of the insert ring 12, and a positioning sleeve is provided inside the nest 201; after the insert ring 12 is inserted into the nest 201, the positioning rod is inserted into the positioning sleeve, so that the positioning groove 1201 is aligned with the positioning plug-in 10.

[0042] like Figures 6-7 As shown, the positioning plug 10 includes a positioning post 1002 and an outer sleeve 1001 fixed to the outer wall of the nest 201. The outer sleeve 1001 is aligned with a through groove opened on the outer wall of the nest 201. The positioning post 1002 slides in cooperation with the outer sleeve 1001 and the through groove. One end of the positioning post 1002 extends out to the side of the outer sleeve 1001 away from the nest 201. The positioning post 1002 is elastically connected to the outer wall of the nest 201 through a first spring 1004.

[0043] A fixing ring 1003 is fixedly sleeved on the positioning post 1002. The fixing ring 1003 is fixed to one end of the first spring 1004, and the other end of the first spring 1004 is fixed to the outer wall of the nest 201.

[0044] like Figure 3 , Figure 5 , Figure 6 as well as Figure 7As shown, the driving component includes a translation section; the translation section is mounted on the end tube 2, and a plurality of first wedge blocks 8 arranged in a circular array are mounted on the translation section. Each of the plurality of first wedge blocks 8 abuts against a second wedge block 9, and the second wedge block 9 is fixed to one end of the positioning post 1002.

[0045] like Figures 6-7 As shown, the translation part includes a threaded sleeve 3; the inner ring of the threaded sleeve 3 is threadedly connected to the outer wall of the end tube 2; a circular cover 4 is rotatably sleeved on the threaded sleeve 3, and the first wedge block 8 is fixed on the inner wall of the circular cover 4; a guide is provided on the translation part. The thread between the threaded sleeve 3 and the end tube 2 adopts a self-locking thread, such as a triangular thread.

[0046] like Figure 7 As shown, the guide includes a guide post 5 fixed to one side of the nest 201; the circular cover 4 has a guide hole 401, the guide post 5 is slidably engaged with the guide hole 401, and one end of the guide post 5 is fixed with an end block 501.

[0047] Through the above design, the translation unit drives all the first wedge blocks 8 to move, which can simultaneously compress or release the compression of multiple second wedge blocks 9, thereby synchronously driving all positioning plugs 10. Specifically:

[0048] During pipe connection, the operator aligns the two end pipes 2 with the vacuum pump port 6 and the external pipe 7 respectively, so that the insert ring 12 is embedded inside the nest 201. Simultaneously, the insertion tube 202 is inserted into the vacuum pump port 6 and the external pipe 7. At this point, the sealing element 13 on the insert ring 12 fits against the inner wall of the nest 201, achieving the first layer of sealing. Then, a wrench is used to clamp the clamping groove 301 on the threaded sleeve 3, and the threaded sleeve 3 is rotated, causing it to move horizontally along the end pipe 2 towards the nest 201. Under the guidance of the guide element, the threaded sleeve 3 moves smoothly, and the first wedge block 8 on the inner wall of the dome 4 presses against the second wedge block 9, pushing the positioning pin 1002 into the positioning groove 1201 and compressing the first spring 1004, thus fixing the insert ring 12 to the nest 201 and completing the anti-loosening connection. After connection, as... Figures 6-7 As shown, one side of the threaded sleeve 3 is attached to the nest 201.

[0049] When disassembling the pipe, the operator uses a wrench to rotate the threaded sleeve 3 in the opposite direction, causing the threaded sleeve 3 to move away from the end pipe 2 away from the nest 201. The first wedge block 8 moves away from the second wedge block 9 along with the cover 4, and the squeezing force on the second wedge block 9 disappears. The positioning pin 1002 retracts under the elastic reset action of the first spring 1004 and leaves the positioning groove 1201, releasing the positioning of the insert ring 12 and the nest 201. At this time, the end pipe 2 can be separated from the port 6 of the vacuum pump and the external pipe 7, completing the disassembly.

[0050] like Figure 7As shown, the sealing sleeve 11 is an inflatable sealing ring, and the inflatable sealing ring is connected to an inflation / deflation mechanism.

[0051] The inflation / deflation mechanism includes an air cylinder 1103; a side groove 2011 is provided on one side of the nest 201, the air cylinder 1103 is fixedly fitted into the side groove 2011, a piston 1104 is fitted inside the air cylinder 1103, a pressure column 1107 for the threaded sleeve 3 side wall to be pushed is fixed on one side of the piston 1104, a second spring 1105 is provided inside the air cylinder 1103, and the inner walls of one side of the piston 1104 and one side of the air cylinder 1103 respectively abut against the two ends of the second spring 1105.

[0052] The nest 201 and the insertion tube 202 are provided with a channel 1102. The air cylinder 1103 has a connecting port 1106 on its side wall, and the connecting port 1106 is connected to one end of the channel 1102. The air sealing ring is provided with an interface 1101 on its inner side, and the interface 1101 is fixedly connected to one end of the channel 1102.

[0053] During pipe connection, as the threaded sleeve 3 moves along the end pipe 2 toward the nest 201, the end face of the threaded sleeve 3 pushes against the pressure column 1107, causing the piston 1104 to move toward the inside of the air cylinder 1103 and compress the second spring 1105. The gas in the air cylinder 1103 enters the inflation sealing ring through the connecting port 1106 and the channel 1102, causing the inflation sealing ring to expand and tightly fit the port 6 of the vacuum pump and the inner wall of the external pipe 7, achieving a second seal and further improving the sealing effect.

[0054] When the pipe is disassembled, the threaded sleeve 3 moves away from the nest 201 along the end pipe 2. The pushing force of the threaded sleeve 3 on the pressure column 1107 disappears. Under the elastic reset action of the second spring 1105, the piston 1104 moves to the side of the pressure column 1107. The gas in the inflation seal ring flows back to the air cylinder 1103 through the channel 1102 and the connecting port 1106. The inflation seal ring contracts, releasing the tight fit with the port 6 of the vacuum pump and the external pipe 7.

[0055] After disassembly, the inflation seal ring is in a contracted state. When reinstalled, the insertion tube 202 can be easily inserted into the port 6 of the vacuum pump and the interior of the external pipe 7.

[0056] like Figure 1 As shown, clamping grooves 301 are provided on both outer walls of the threaded sleeve 3 for external wrenches to grip. The clamping grooves 301 facilitate the gripping of external wrenches, making it easier to tighten the threaded sleeve 3.

[0057] This utility model is not limited to the above-described embodiments. Any changes in its shape or structure fall within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A pipe anti-loosening connection structure for a vacuum pump, comprising a bellows (1); characterized in that: Both ends of the bellows (1) are fixedly connected to an end pipe (2); the two end pipes (2) are respectively used to connect the port (6) of the vacuum pump and the external pipe (7). The end of the end tube (2) away from the corrugated tube (1) is provided with a nest (201) and a tube (202), and a sealing sleeve (11) is fixedly sleeved on the outside of the tube (202). Both the port (6) and the external pipe (7) are provided with a retaining ring (12), and the retaining ring (12) is connected to the nest (201); a sealing element (13) is installed on one side of the retaining ring (12). The insert (12) has multiple positioning slots (1201) arranged in a ring array, and the nest (201) has multiple positioning plugs (10) arranged in a ring array. The end tube (2) is provided with a driving component, which is connected to a plurality of the positioning plugs (10); the driving component is used to drive the positioning plugs (10) to insert into or leave the positioning slot (1201).

2. The anti-loosening connection structure for a vacuum pump as described in claim 1, characterized in that: The positioning plug (10) includes a positioning post (1002) and an outer sleeve (1001) fixed to the outer wall of the nest (201). The outer sleeve (1001) is aligned with the through groove opened on the outer wall of the nest (201). The positioning post (1002) slides in cooperation with the outer sleeve (1001) and the through groove. One end of the positioning post (1002) extends to the side of the outer sleeve (1001) away from the nest (201). The positioning post (1002) is elastically connected to the outer wall of the nest (201) through a first spring (1004).

3. The anti-loosening connection structure for a vacuum pump as described in claim 2, characterized in that: A fixing ring (1003) is fixedly sleeved on the positioning post (1002). The fixing ring (1003) is fixed to one end of the first spring (1004), and the other end of the first spring (1004) is fixed to the outer wall of the nest (201).

4. The anti-loosening connection structure for a vacuum pump as described in claim 2, characterized in that: The driving component includes a translation section; the translation section is mounted on the end tube (2), and a plurality of first wedge blocks (8) arranged in a ring array are mounted on the translation section. Each of the plurality of first wedge blocks (8) abuts against a second wedge block (9), and the second wedge block (9) is fixed to one end of the positioning post (1002).

5. The anti-loosening connection structure for a vacuum pump as described in claim 4, characterized in that: The translation part includes a threaded sleeve (3); the inner ring of the threaded sleeve (3) is threadedly connected to the outer wall of the end tube (2); a circular cover (4) is rotatably sleeved on the threaded sleeve (3), and the first wedge block (8) is fixed on the inner wall of the circular cover (4); a guide is provided on the translation part.

6. The anti-loosening connection structure for a vacuum pump as described in claim 5, characterized in that: The guide includes a guide post (5) fixed to one side of the nest (201); the circular cover (4) is provided with a guide hole (401), the guide post (5) is slidably engaged with the guide hole (401), and one end of the guide post (5) is fixed with an end block (501).

7. The anti-loosening connection structure for a vacuum pump as described in claim 5, characterized in that: The sealing sleeve (11) is an inflatable sealing ring, and the inflatable sealing ring is connected to an inflation / deflation mechanism.

8. The anti-loosening connection structure for a vacuum pump as described in claim 7, characterized in that: The inflation / deflation mechanism includes an air cylinder (1103); a side groove (2011) is provided on one side of the nest (201), the air cylinder (1103) is fixedly fitted into the side groove (2011), a piston (1104) is fitted inside the air cylinder (1103), a pressure column (1107) for the threaded sleeve (3) side wall to be pushed is fixed on one side of the piston (1104), a second spring (1105) is provided inside the air cylinder (1103), and the inner walls of one side of the piston (1104) and one side of the air cylinder (1103) respectively abut against the two ends of the second spring (1105).

9. The anti-loosening connection structure for a vacuum pump as described in claim 8, characterized in that: The nest (201) and the insertion tube (202) are provided with a channel (1102), and the air cylinder (1103) has a connecting port (1106) on its side wall, and the connecting port (1106) is connected to one end of the channel (1102). The air sealing ring is provided with an interface (1101) on its inner side, and the interface (1101) is fixedly connected to one end of the channel (1102).

10. The anti-loosening connection structure for a vacuum pump as described in claim 5, characterized in that: The threaded sleeve (3) has clamping grooves (301) on both outer walls for external wrenches to hold.

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