Sealing device for air suction pipe of carding machine

Abstract

The utility model relates to the technical field of carding machines, in particular to a sealing device for a carding machine air suction pipe. Comprising a joint pipe and a sealing assembly, the joint pipe is arranged at the joint of a main pipeline and a branch pipeline of the air suction pipe, one end of the joint pipe is connected with the main pipeline, and the other end of the joint pipe is connected with the branch pipeline; and the sealing assembly is arranged at the connecting end of the joint pipe and the branch pipeline, forms clamping and embedding connection with the port of the branch pipeline, and forms bidirectional sealing on the inner wall and the outer wall of the port of the branch pipeline. The sealing performance between the joint pipe and the branch pipeline is improved through multiple sealing, and the device is simple in structure and easy to use and install.

Description

Technical Field

[0001] The utility model relates to the technical field of cotton carding machines, in particular to a sealing device for a suction pipe of a cotton carding machine. Background Art

[0002] The carding machine has the function of removing impurities and short fibers during the production process, and the main function of the carding machine suction pipe is to suck impurities and short fibers into the dust filter chamber.

[0003] The suction pipe is divided into branches, with a main trunk and then subdivided into branches. Each branch of the suction pipe corresponds to a specific drop point. Each branch of the suction pipe is connected to the main trunk through assembly. In order to ensure the sealing between the branch and the main trunk, a sealing gasket will be installed at the connection to avoid air leakage at the connection.

[0004] In actual use, the branch position of the suction pipe needs to be fine-tuned according to the debris falling point, and each fine-tuning will wear the gasket. Once the gasket is damaged, it will cause sealing failure and scratches, and the suction pipe will lose its function, and the impurities and short fibers discharged from the debris falling point cannot be discharged, affecting the quality. Therefore, it is urgent to solve this problem.

[0005] The above contents are only used to assist in understanding the technical solution of the present utility model, and do not constitute an admission that the above contents are the closest prior art. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a sealing device for a suction pipe of a cotton carding machine, which improves the sealing performance between a joint pipe and a branch pipe through multiple seals, and has a simple structure and is easy to use and install.

[0007] To achieve the above-mentioned purpose, the technical solution of the utility model is implemented as follows: a sealing device for a suction pipe of a cotton carding machine comprises: a joint pipe and a sealing assembly; the joint pipe is arranged at the joint between the main pipe and the branch pipe of the suction pipe, one end of the joint pipe is connected to the main pipe, and the other end is connected to the branch pipe; the sealing assembly is arranged at the connecting end of the joint pipe and the branch pipe, and forms a snap-fit ​​connection with the port of the branch pipe, and forms a two-way seal on the inner wall and the outer wall of the port of the branch pipe.

[0008] Preferably, the sealing assembly includes an outer connecting tube, an inner connecting tube, an annular connecting plate and a filling portion provided at the connecting end of the joint tube and the branch pipe; the outer connecting tube and the inner connecting tube are both vertically connected to the annular connecting plate, and the diameter of the inner connecting tube is the same as the inner diameter of the annular connecting plate, the diameter of the outer connecting tube is larger than the diameter of the inner connecting tube, and the outer connecting tube, the inner connecting tube and the annular connecting plate jointly enclose an annular groove; the end of the branch pipe forms a plug-in fit with the annular groove; one side of the filling portion is fittedly connected to the inner wall of the outer connecting tube, and the other side is abutted against the outer wall of the branch pipe; the outer wall of the inner connecting tube is in contact with the inner wall of the branch pipe.

[0009] Preferably, the filling part includes an annular sealing gasket and 3M connecting glue; the annular sealing gasket is arranged in an annular groove, one side of the 3M connecting glue is fit connected to the inner wall of the connecting outer tube, and the other side is fit connected to one side of the annular sealing gasket, and the other side of the annular sealing gasket is abutted against the outer wall of the branch pipe inserted in the annular groove.

[0010] Preferably, it also includes a rubber sealing sleeve; the rubber sealing sleeve is sleeved on the outer wall of the branch pipe and the connecting outer pipe.

[0011] Preferably, the rubber sealing sleeve is configured to be in a bell-mouth shape, and the small opening end of the bell-mouth is sleeved on the outer wall of the branch pipe.

[0012] Preferably, a reducing connecting pipe is provided at the connecting end between the joint pipe and the main pipeline, one end of the reducing connecting pipe is vertically connected to the annular connecting piece, and the other end is plugged into the main pipeline, and an L-shaped sealing gasket is provided between the reducing connecting pipe and the main pipeline for sealing, and one side of the L-shaped sealing gasket is fit-connected to the annular connecting piece.

[0013] Preferably, the annular connecting plate is provided with connecting holes for connecting with the outer flange of the main pipeline, and there are at least two connecting holes, which are evenly spaced along the circumferential direction of the annular connecting plate.

[0014] Preferably, the annular sealing gasket is an EPDM foam rubber sealing gasket.

[0015] The beneficial effects of the utility model are embodied in:

[0016] (1) The utility model changes the previous direct connection between the main pipeline and the branch pipeline into an indirect connection, and connects the main pipeline and the branch pipeline separately, and performs multiple seals on the branch pipeline that needs to be adjusted frequently. This not only facilitates the daily adjustment of the branch pipeline according to production needs, but also eliminates the phenomenon that the seal between the main pipeline and the branch pipeline is damaged due to adjustment, thereby improving the sealing effect between the main pipeline and the branch pipeline.

[0017] (2) The utility model is provided with triple seals. Considering that the branch pipe needs to be adjusted frequently, each seal must take into account the convenience of adjustment and the effectiveness of the seal. Therefore, the damping of each seal on the branch pipe during adjustment cannot be too large, so a dispersed seal method is designed to gradually block the airflow that causes seal failure. When the main pipe absorbs the branch pipe, the suction force causes the rubber sealing sleeve to shrink, so that the rubber sealing sleeve strengthens the seal at the joint between the branch pipe and the connecting outer pipe, forming a passive seal, ensuring that the sealing effect between the branch pipe and the main pipe can meet the working requirements of the branch pipe, making the operation of the entire suction pipe more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is the front view of the joint pipe of the utility model;

[0020] Figure 3 It is a top view of the joint pipe of the utility model.

[0021] Description of reference numerals:

[0022] A, branch pipe; 10, joint pipe; 11, connecting outer pipe; 12, connecting inner pipe; 13, annular groove;

[0023] 14. annular connecting piece; 141. connecting hole; 15. reducing connecting pipe; 21. annular sealing gasket;

[0024] 22. 3M connecting glue; 23. Rubber sealing sleeve; 24. L-shaped sealing gasket. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] Example

[0027] See also Figure 1-3 As shown:

[0028] The utility model provides a sealing device for a suction pipe of a cotton carding machine, comprising: a joint pipe 10 and a sealing assembly. The joint pipe 10 is arranged at the joint of the main pipe and the branch pipe A of the suction pipe, one end of the joint pipe 10 is connected to the main pipe, and the other end is connected to the branch pipe A; the sealing assembly is arranged at the connecting end of the joint pipe 10 and the branch pipe A, and forms a card-embedded connection with the port of the branch pipe A, and forms a bidirectional seal on the inner wall and the outer wall of the port of the branch pipe A.

[0029] Through such an arrangement, the previous direct connection between the main pipeline and the branch pipeline A is changed to an indirect connection, and the main pipeline and the branch pipeline A are connected separately. The branch pipeline A that needs to be adjusted frequently is multiple sealed, so that the previous phenomenon of damage to the seal between the main pipeline and the branch pipeline A due to adjustment no longer occurs, thereby improving the sealing effect between the main pipeline and the branch pipeline A, reducing the daily maintenance rate, and reducing maintenance costs.

[0030] The sealing component is mainly composed of a connecting outer tube 11, a connecting inner tube 12, an annular connecting piece 14 and a filling part.

[0031] The connecting outer tube 11 and the connecting inner tube 12 are both vertically connected to one side of the annular connecting piece 14, and the diameter of the connecting inner tube 12 is the same as the inner diameter of the annular connecting piece 14, that is, the diameter of the connecting inner tube 12 is the same as the diameter of the middle through hole. The diameter of the connecting outer tube 11 is larger than the diameter of the connecting inner tube 12, and the connecting outer tube 11, the connecting inner tube 12 and the annular connecting piece 14 together enclose an annular groove 13. The end of the branch pipe A forms a plug-in fit with the annular groove 13; one side of the filling part is fitted and connected to the inner wall of the connecting outer tube 11, and the other side is in contact with the outer wall of the branch pipe A, while the outer wall of the connecting inner tube 12 is in contact with the inner wall of the branch pipe A.

[0032] Through such a setting, when the main pipe provides suction force to the branch pipe A to absorb impurities, the airflow drives the impurities along the inner wall of the branch pipe A and the inner wall of the connecting inner pipe 12 and directly enters the main pipe of the suction pipe. Since there is no sealing gasket between the branch pipe A and the connecting inner pipe 12, the problem of scratching caused by the damage of the sealing gasket will not occur. Since the outer wall of the connecting inner pipe 12 and the inner wall of the branch pipe A are connected by contact to form a preliminary seal, the filling part performs a second seal on the outer wall of the branch pipe A inserted into the annular groove 13, thereby effectively preventing the airflow from entering along the connection between the branch pipe A and the joint pipe 10, avoiding the occurrence of sealing failure, and making the main pipe and the branch pipe A work more stably.

[0033] The filling part is mainly composed of an annular sealing gasket 21 and 3M connecting glue 22 .

[0034] The annular sealing gasket 21 is arranged in the annular groove 13 , one side of the 3M connecting glue 22 is fitted and connected to the inner wall of the connecting outer tube 11 , and the other side is fitted and connected to one side of the annular sealing gasket 21 , and the other side of the annular sealing gasket 21 is abutted against the outer wall of the connecting tube 10 inserted in the annular groove 13 .

[0035] Through such a configuration, the annular sealing gasket 21 can be fixed in the annular groove 13. When the branch pipe A is rotated or moved laterally according to production requirements, the annular sealing gasket 21 will not be driven to move. In actual use, the annular sealing gasket 21 is configured as a cylindrical sleeve that is fitted and connected to the inner wall of the connected outer pipe 11, so that the contact surface with the outer wall of the branch pipe A can be maximized, and the gap between the outer wall of the branch pipe A and the inner wall of the connected outer pipe 11 can be filled more fully, thereby improving the sealing effect.

[0036] In order to prevent the annular sealing gasket 21 from being worn out during use due to long-term use, resulting in sealing failure, a rubber sealing sleeve 23 is also provided; the rubber sealing sleeve 23 is sleeved on the outer wall of the branch pipe A and the connecting outer pipe 11, thereby forming a third seal on the outside of the joint between the branch pipe A and the connecting outer pipe 11.

[0037] Since triple seals are provided, and considering that branch pipe A needs to be adjusted frequently, each seal must take into account both the convenience of adjustment and the effectiveness of the seal. Therefore, the damping of each seal on the branch pipe A during adjustment cannot be too large, so a decentralized seal method is designed to gradually block the airflow that causes seal failure. When the main pipe absorbs the branch pipe A, the suction force causes the rubber sealing sleeve 23 to shrink, so that the rubber sealing sleeve 23 strengthens the seal at the joint between the branch pipe A and the connecting outer pipe 11, forming a passive seal.

[0038] The rubber sealing sleeve 23 is configured to be in a bell-mouth shape, and the small opening end of the bell-mouth is sleeved on the outer wall of the branch pipe A, so that the rubber sealing sleeve 23 can better seal the outer wall of the branch pipe A.

[0039] A reducing connecting pipe 15 is provided at the connecting end of the joint pipe 10 and the main pipeline. One end of the reducing connecting pipe 15 is vertically connected to the annular connecting piece 14, and the other end is plugged into the main pipeline. An L-shaped sealing gasket 24 for sealing is provided between the reducing connecting pipe 15 and the main pipeline, and one side of the L-shaped sealing gasket 24 is fit-connected to the annular connecting piece 14.

[0040] The annular connecting piece 14 is provided with connecting holes 141 for connecting with the outer flange of the main pipe, and there are at least two connecting holes 141, which are evenly spaced along the circumferential direction of the annular connecting piece 14. Through such an arrangement, the connection between the joint pipe 10 and the main pipe is easy to be fixed and connected, and the sealing effect is guaranteed.

[0041] The annular sealing gasket 21 is configured as an EPDM foam rubber sealing gasket, thereby improving the wear resistance of the annular sealing gasket 21 .

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing device for a suction pipe of a carding machine, characterized in that: include: A joint pipe (10) and a sealing component; the joint pipe (10) is arranged at the joint between the main pipe and the branch pipe (A) of the air suction pipe, one end of the joint pipe (10) is connected to the main pipe, and the other end is connected to the branch pipe (A); the sealing component is arranged at the connecting end of the joint pipe (10) and the branch pipe (A), and forms a snap-fit ​​connection with the port of the branch pipe (A), and forms a bidirectional seal on the inner wall and the outer wall of the port of the branch pipe (A).

2. The sealing device for the suction pipe of a carding machine according to claim 1, characterized in that: The sealing assembly comprises an outer connecting tube (11), an inner connecting tube (12), an annular connecting sheet (14) and a filling portion arranged at the connecting end of the joint tube (10) and the branch pipeline (A); the outer connecting tube (11) and the inner connecting tube (12) are both vertically connected to the annular connecting sheet (14), and the diameter of the inner connecting tube (12) is the same as the inner diameter of the annular connecting sheet (14), the diameter of the outer connecting tube (11) is larger than the diameter of the inner connecting tube (12), and the outer connecting tube (11), the inner connecting tube (12) and the annular connecting sheet (14) jointly enclose an annular groove (13); the end of the branch pipeline (A) is plug-fitted with the annular groove (13); one side of the filling portion is fitted and connected to the inner wall of the outer connecting tube (11), and the other side is in contact with the outer wall of the branch pipeline (A); the outer wall of the inner connecting tube (12) is in contact and connected to the inner wall of the branch pipeline (A).

3. The sealing device for the suction pipe of a carding machine according to claim 2, characterized in that: The filling portion comprises an annular sealing gasket (21) and a 3M connecting glue (22); the annular sealing gasket (21) is arranged in the annular groove (13); one side of the 3M connecting glue (22) is closely connected to the inner wall of the connecting outer tube (11); the other side of the 3M connecting glue (22) is closely connected to one side of the annular sealing gasket (21); and the other side of the annular sealing gasket (21) is in contact with the outer wall of the branch pipe (A) inserted in the annular groove (13).

4. The sealing device for the suction pipe of a carding machine according to claim 2 or 3, characterized in that: It also comprises a rubber sealing sleeve (23); the rubber sealing sleeve (23) is sleeved on the outer wall of the branch pipe (A) and the connecting outer pipe (11).

5. The sealing device for the suction pipe of a carding machine according to claim 4, characterized in that: The rubber sealing sleeve (23) is configured to be in the shape of a bell mouth, and the small opening end of the bell mouth is sleeved on the outer wall of the branch pipe (A).

6. The sealing device for the suction pipe of a carding machine according to claim 5, characterized in that: A reducing connecting pipe (15) is provided at the connection end between the joint pipe (10) and the main pipeline. One end of the reducing connecting pipe (15) is vertically connected to the annular connecting piece (14), and the other end is plugged into the main pipeline. An L-shaped sealing gasket (24) for sealing is provided between the reducing connecting pipe (15) and the main pipeline, and one side of the L-shaped sealing gasket (24) is closely connected to the annular connecting piece (14).

7. The sealing device for the suction pipe of a carding machine according to claim 6, characterized in that: The annular connecting piece (14) is provided with connecting holes (141) for connecting to the outer flange of the main pipeline. There are at least two connecting holes (141) which are evenly spaced along the circumferential direction of the annular connecting piece (14).

8. The sealing device for the suction pipe of a carding machine according to claim 3, characterized in that: The annular sealing gasket (21) is an EPDM foam rubber sealing gasket.

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