A flexible connecting sleeve that is easy to clean
By adopting a double-layer casing structure and clamp tightening method, the joint problem when connecting the hose and stainless steel parts is solved, making it easy to clean and stable connection, and avoids sanitary blind spots and quality accidents.
Patent Information
- Application Number
- CN202421617876.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-07-10
AI Technical Summary
When existing hoses are connected to stainless steel parts, there are joint problems, which makes it difficult to control microbials, especially in sterile environments, which are prone to quality accidents.
It adopts a double-layer casing structure, with the inner layer being corrugated and the outer layer being sleeved. The ends of the corrugated pipe extend and bent and attached to the flange. It is clamped and tightened by the connection ends of the equipment hard pipe, and the connection is tightened and sealed through the clamp to prevent water from flowing through the crimping joint.
Reduces the number of joints and increases the risk, avoids sanitary blind spots, improves cleaning efficiency, and enhances connection stability.
Smart Images
Figure CN222717724U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipes, and more particularly to a flexible connecting sleeve which is easy to clean. Background Art
[0002] In various manufacturing industries, hoses are widely used because they can increase the flexibility of production line connections and offset vibration. In some application scenarios with high requirements for microbial control, such as some filling machines, hoses are inevitably used. In order to ensure the strength of the hose and the normal connection with the equipment, the hose is generally crimped with stainless steel parts at both ends, and then sealed through joints and gaskets added to the joints.
[0003] However, the disadvantage of this commonly used process in the industry is that there will be seams between the hose and the stainless steel connectors, as well as seams on both sides of the gasket in the pipeline, which poses a challenge to the microbial control of the production line, especially the aseptic environment control: when subjected to pipeline pressure and water hammer effect during use, these seams will instantly become larger and then shrink back to their original positions, or these seams will expand and become larger as the use time increases. Both of these situations will cause the liquid to enter the seams. At the same time, since the gap between the hose and the stainless steel part is a fixed connection located inside the pipeline, it cannot be disassembled and cleaned, and becomes a dead corner for cleaning, resulting in problems such as contamination of the liquid product flowing through, which in turn leads to quality accidents.
[0004] Therefore, how to provide an inner and outer sleeve with an inner tube flange crimped onto a connector, and a flexible connecting sleeve that is easy to clean and does not require a gasket for sealing connection is an urgent problem to be solved by those skilled in the art. Utility Model Content
[0005] In view of this, the utility model provides a flexible connecting sleeve which is easy to clean and has an inner and outer outer sleeve structure. The inner tube flange is crimped on the connecting piece and then directly connected to the joint. There is no need for gasket sealing and connecting head connection. While reducing the appearance of seams at the gasket, it can also avoid the problem of enlargement of the seams at the crimping joint of the connecting head and the hose due to pipeline pressure and water hammer effect, so that there are no dead angles for cleaning.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A flexible connecting sleeve that is easy to clean, comprising:
[0008] A sleeve assembly, the sleeve assembly comprising a bellows and a sleeve, the sleeve being sleeved outside the bellows, and two ends of the bellows extending outward along two ends of the sleeve;
[0009] A crimping tube, wherein there are two crimping tubes and one end of the crimping tubes is a connection port, and the other end is provided with an annular flange, the inner side surfaces at both ends of the sleeve are respectively crimped to the outer peripheral wall surfaces of the connection ports of the two crimping tubes, the two ends of the corrugated tube coaxially pass through the through holes of the two crimping tubes and the ends are bent to form a bending section parallel to the cross-sectional direction of the pipe orifice, and the outer end surface of the annular flange is parallel to and fits the bending section;
[0010] Equipment hard pipes, the equipment hard pipes are two and one end of each is connected to two devices respectively, and the other end is integrally connected with a connecting end head and is respectively connected to the two ends of the corrugated pipe, the outer end surface of the connecting end head is coaxially arranged with the outer end surface of the annular flange and abuts against the bending section, and the bending section is clamped and fixed between the connecting end head and the annular flange;
[0011] The clamp is coaxially sleeved on the outer edge end where the annular flange and the connecting end are correspondingly abutted and connected, and a tightening handle is arranged on one end of the clamp.
[0012] It can be known from the above technical scheme that compared with the prior art, the utility model discloses a flexible connecting sleeve that is easy to clean, specifically a double-layer sleeve structure, the inner layer is a corrugated tube, the outer layer is a sleeve, the ends of the corrugated tube are extended outwards of the two ends of the sleeve, the outer wall of the corrugated tube is abutted against the inner wall of the short tube-shaped crimping tube, the outer peripheral surface of the crimping tube connection port is crimped with the inner wall surface of the sleeve, and then the extended end of the corrugated tube is bent to form a bent section parallel to the cross-sectional direction of its own pipe mouth, The bent section is crimped parallel to the outer end face of the annular flange, and then the outer end face of the connecting end of the equipment rigid pipe connected to the equipment is pressed against the bent section that fits on the annular flange, so that the bent section is clamped and fixed between the connecting end and the annular flange, and then the clamp is opened by turning the tightening handle and coaxially sleeved on the outer edge ends of the connecting end and the annular flange, and the tightening handle is inserted back to fix the clamp with the connecting end and the annular flange at the same time, thereby completing the connection between the flexible sleeve and the equipment rigid pipe. Therefore, the double-layer casing structure of the present invention can protect the bellows by the casing, thereby increasing the service life of the bellows. The casing is crimped with the compression tube to protect the pressure-bearing property of the bellows and ensure that the bellows can work normally. The ends of the bellows are extended to both sides and bent and attached to the flanges, and then clamped and fastened by the connecting ends of the equipment hard tube, and then the connection between the connecting end and the annular flange is tightened and sealed by the clamp. Since the end connection of the bellows is at the annular flange of the compression tube, the water body will directly pass through the pipe body instead of the compression joint between the bellows and the compression tube, thereby avoiding the impact of the water body on the compression joint to cause a seam at the compression joint, thereby avoiding partial Water bodies, such as nutrient-rich liquid residues in the joints cause microorganisms to breed and produce biofilms that are difficult to remove. At the end of production, the CIP cleaning system is used for in-situ cleaning. After the connection is disconnected, the connection ends of the equipment hard pipes can still be inspected, cleaned and disinfected. Because the bent section is crimped and fixed with the crimping tube, and because it is clamped on the connection end and the annular flange through a clamp, the two are tightly clamped, and very little liquid will run into the joints, reducing the frequency of cleaning the crimping joints. During daily maintenance, it is only necessary to simply clean the outer end face of the bent section and flush the cleaning liquid into the pipe body for cleaning, which improves the cleaning efficiency of the connecting sleeve. Therefore, the connecting sleeve of the present application, by crimping the bent section of the bellows with the annular flange of the crimping tube, prevents water from flowing through the crimping joint of the tube body, reduces the impact of the creation and enlargement of joints due to the internal tube pressure and water hammer effect, does not form sanitary dead corners, and facilitates cleaning of the inner wall and connection of the bellows. At the same time, by providing a clamp, the bent section of the bellows is clamped and fixed between the connecting end and the annular flange, thereby improving the stability of the connection between the hose and the equipment hard pipe.
[0013] Furthermore, the contact section between the outer peripheral wall surface of the corrugated tube and the inner wall surface of the compression tube is a smooth surface section.
[0014] The beneficial effects of adopting the above technical solution are: easy installation, and can reduce the friction damage to the outer wall of the corrugated pipe caused by the compression pipe when the water flows through the corrugated pipe due to the enlargement of the pipe body.
[0015] Furthermore, a first annular groove is provided on the wall surface where the annular flange abuts against the bending section, and an annular clamping edge abutting against the inner bottom surface of the notch of the first annular groove is provided on one side of the outer edge end of the bending section. The annular clamping edge is pressed into the first annular groove and its height is higher than the notch depth of the first annular groove, so that an annular protrusion opposite to the annular clamping edge is formed on the other side of the outer edge end of the bending section.
[0016] The beneficial effect of adopting the above technical solution is: by setting a first annular groove on the annular flange and setting an annular clamping edge at the outer edge end of the bending section, the bending section can be more easily crimped into the notch of the first annular groove, thereby improving the stability of the connection between the two. At the same time, an annular protrusion is formed on the other side of the bending section, so that the connection position of the annular flange and the connecting end is clearer, which facilitates the connection operation.
[0017] Furthermore, a second annular groove is provided on the connecting end, and the outer wall surface of the annular flange abuts against the outer end surface of the connecting end and squeezes the annular protrusion to engage with the second annular groove.
[0018] The beneficial effect of adopting the above technical solution is that when the connecting end of the equipment hard pipe is connected to the annular flange, the annular protrusion formed by the bending section can be snapped into the second annular groove, which facilitates coaxial installation and improves the stability of the snap connection.
[0019] Furthermore, the clamp includes two semicircular clamping rings hinged at one end, and the other ends of the two clamping rings extend in parallel in a direction away from the hinged end to form a connecting plate. The two connecting plates are coaxially penetrated with screw holes, and the tightening handle is screwed into the screw holes to fix the two clamping rings.
[0020] Furthermore, a snap-fit groove is provided on the inner side of the two snap rings, and the snap-fit groove is tightly snap-fitted with the outer edge end connected to the annular flange and the connecting end.
[0021] The beneficial effect of adopting the above technical solution is that the outer edge ends of the annular flange and the connecting end are clamped into the clamping groove when they are connected correspondingly, thereby improving the stability and airtightness of the connection between the two by the clamp.
[0022] Furthermore, the sleeve is crimped onto the outer peripheral wall of the crimping tube and a tightening sleeve is sleeved thereon.
[0023] The beneficial effect of adopting the above technical solution is: the crimping connection between the sleeve and the crimping tube is tightened by the tightening sleeve, thereby improving the connection stability of the tube body. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] 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 will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of the flexible sleeve provided by the utility model.
[0026] Figure 2 A three-dimensional structural schematic diagram of the connection between the flexible casing and the equipment hard pipe provided by the utility model.
[0027] Figure 3 for Figure 2 Exploded view of.
[0028] Figure 4 This is a cross-sectional view of one end of the flexible sleeve provided by the utility model.
[0029] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part A.
[0030] Figure 6 A cross-sectional view of another flexible sleeve provided by the utility model.
[0031] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of part B.
[0032] Figure 8 This is a schematic diagram of the three-dimensional structure of the bellows provided by the utility model.
[0033] Fig. 9 This is a schematic diagram of the three-dimensional structure of the compression tube provided by the utility model.
[0034] Fig.10 This is a schematic diagram of the three-dimensional structure of the equipment hard pipe provided by the utility model.
[0035] Fig.11 This is a schematic diagram of the three-dimensional structure of the clamp provided by the utility model.
[0036] Among them, 1-sleeve assembly, 11-corrugated tube, 111-bending section, 1111-annular clamping edge, 1112-annular protrusion, 1113-clamping protrusion, 12-sleeve, 2-crimping tube, 21-annular flange, 211-first annular groove, 212-protrusion, 23-equipment hard tube, 31-connecting end, 311-second annular groove, 4-clamp, 41-fastening handle, 42-clamping ring, 421-clamping groove, 43-connecting plate, 5-fastening sleeve. DETAILED DESCRIPTION
[0037] 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0038] The utility model discloses a flexible connecting sleeve which is easy to clean. Figure 1-11 As shown, it includes a sleeve assembly 1, a crimping piece 2, an equipment hard pipe 3 and a clamp 4. The sleeve assembly 1 includes a bellows 11 and a sleeve 12. The sleeve 12 is sleeved on the outside of the bellows 11, and both ends of the bellows 11 extend outward along both ends of the sleeve 12; one end of the crimping tube 2 is a connecting port, and the other end is provided with an annular flange 21. The inner side surface of one end of the sleeve 12 is crimped to the outer peripheral wall surface of the connecting port of the crimping tube 2. The bellows 11 coaxially passes through the crimping tube 2 and the end is bent to form a bending section 11 parallel to the cross-sectional direction of the pipe mouth. 1, the outer end surface of the annular flange 21 is parallel to the bending section 111; one end of the equipment hard pipe 3 is connected to the equipment, and the other end is integrally connected with the connecting end 31 and communicated with the corrugated pipe 11, the outer end surface of the connecting end 31 is coaxially arranged with the outer end surface of the annular flange and abuts with the bending section, and the bending section 111 is clamped and fixed between the connecting end 31 and the annular flange 21; the clamp 4 is coaxially sleeved on the outer edge end of the annular flange 21 and the connecting end 31 corresponding to the abutting position, and a tightening handle 41 is provided on one end of the clamp 4.
[0039] For details, see Figure 1 As shown, both ends of the sleeve assembly 1 of the present invention are connected with crimping parts 2 in the same way, and are simultaneously connected to the pipe body of another device through a clamp 4, so as to be used as a connecting pipe between the two devices.
[0040] In one embodiment of the utility model, the contact section between the outer peripheral wall of the bellows 11 and the inner wall of the compression tube 2 is a smooth section, which is convenient for installing the compression tube 2 and can reduce the friction damage caused by the compression tube 2 to the outer peripheral wall of the bellows 11 when water flows through the bellows 11 due to the enlargement of the tube body.
[0041] In one embodiment of the present invention, see Figure 4 and Figure 5 As shown, a first annular groove 211 is provided on the wall surface where the annular flange 21 abuts against the bending section 111, and an annular clamping edge 1111 abutting against the inner bottom surface of the notch of the first annular groove 211 is provided on one side of the outer edge of the bending section 111. The annular clamping edge 1111 is pressed into the first annular groove 211 and its height is higher than the notch depth of the first annular groove 211, so that an annular protrusion 1112 opposite to the annular clamping edge 1111 is formed on the other side of the outer edge of the bending section 111. By providing the first annular groove 211 on the annular flange 21 and providing the annular clamping edge 1111 at the outer edge of the bending section 111, the bending section 111 is more easily pressed into the notch of the first annular groove 211, thereby improving the stability of the connection between the two, and at the same time, an annular protrusion 1112 is formed on the other side of the bending section 111, so that it is convenient to connect with the connecting end 31.
[0042] In the above embodiment, the connecting end 31 is further provided with a second annular groove 311, the outer wall surface of the annular flange 21 abuts against the outer end surface of the connecting end 31, and the extruded annular protrusion 1112 is correspondingly engaged with the second annular groove 311. When the connecting end 31 of the equipment hard pipe 3 is connected to the annular flange 21, the annular protrusion 1112 of the bent section 111 can be engaged with the second annular groove 311, which facilitates coaxial installation and improves the stability of the engagement.
[0043] Another embodiment of the annular flange 21 in the present invention is shown in FIG. Figure 6 and Figure 7 As shown, a protrusion 212 is provided on the wall surface where the annular flange 21 abuts against the bent section 111, and a clamping protrusion 1113 abutting against the outer end surface of the protrusion 212 is provided at the outer edge end of the bent section 111. By providing the protrusion 212 on the annular flange 21 and the clamping protrusion 1113 at the outer edge end of the bent section 111, the bent section 111 is easily pressed onto the annular flange 211, thereby improving the stability of the connection between the two and facilitating the connection with the connecting terminal 31.
[0044] The utility model is about an embodiment of the clamp 4, see Fig.11 As shown, the clamp 4 includes two semicircular clamping rings 42 hingedly connected at one end, and the other ends of the two clamping rings 42 extend parallel to the direction away from the hinged end to form a connecting plate 43. The two connecting plates 43 are coaxially penetrated with screw holes, and the fastening handle 41 is screwed into the screw holes to fix the two clamping rings 42.
[0045] In the above embodiment, the inner sides of the two clamping rings 42 are provided with a clamping groove 421, and the clamping groove 421 is tightly clamped with the outer edge of the annular flange 21 and the connecting end 31. The slot width of the clamping groove 421 is just the connection width of the connecting end 31 and the annular flange 21, so that the two can be adapted and sealed to be clamped in the clamping groove 421, thereby improving the stability and tightness of the connection between the clamp 4 and the two.
[0046] In the above embodiment, the sleeve 12 is a steel wire braided mesh tube. The steel wire braided mesh tube is used as the sleeve 12, so that the sleeve 12 is flexible and not easy to be bent and damaged, thereby extending the service life of the sleeve.
[0047] In the above embodiment, the sleeve 12 is crimped on the outer peripheral wall of the crimping tube and is also sleeved with a tightening sleeve 5. The tightening sleeve 5 is used to tighten the crimping connection between the sleeve 12 and the crimping tube 2, thereby improving the connection stability of the tube body.
[0048] Specifically, the wire braided mesh tube and the fastening sleeve 5 are both made of 304 stainless steel, and their characteristics include: 1. Corrosion resistance: It has excellent corrosion resistance in some acid and alkali corrosive solutions; 2. No rust: It is not easy to rust in a humid environment and has a long service life; 3. Wear resistance: The surface is beautiful, clean and bright, durable, scratch-free, never rusts or breaks; 4. Low temperature resistance: Under low temperature conditions, it will never break when used as a stainless steel water pipe for food production; 5. Good forming performance: In the case of bending processing and stamping of stainless steel products, the performance is stable and the forming effect is good; 6. The recycling price is high, which saves production costs.
[0049] Furthermore, the compression tube 2, the equipment hard tube 3 and the threaded clamp 4 are all made of 316L stainless steel. Since the above structures are in direct or indirect contact with the fluid flowing through the tube body, 316L stainless steel with better corrosion resistance than 304 stainless steel is required. The chemical composition of 316L stainless steel is relatively stable and it is not easy to produce metal ions, thereby avoiding adverse effects on the human body. It can be used in food-grade environments.
[0050] In addition, the material of the bellows 11 can be food-grade Teflon, food-grade silicone and food-grade rubber materials, among which the corrugated Teflon hose made of food-grade Teflon material is selected in the utility model, which is a special pipe made of polytetrafluoroethylene (PTFE) material, and its unique corrugated design gives it a series of excellent performance characteristics. Teflon (PTFE) material has excellent corrosion resistance and can operate stably in most chemical media except molten alkali metals, sulfur trioxide and liquid fluorine. Therefore, the corrugated Teflon hose can maintain its performance unchanged in harsh environments such as strong acids, strong alkalis, salt water, solvents, etc., solving the problem that hoses made of other materials are easy to corrode and age in harsh environments, and relying on its excellent chemical stability and corrosion resistance, it can be applied to food machinery for conveying various food raw materials and finished products, while ensuring the safety and hygiene of food, and the corrugated Teflon hose used in this application can be used as a food-grade connecting hose.
[0051] The working principle of the flexible connecting sleeve that is easy to clean provided by the utility model is:
[0052] The flexible connecting sleeve is a double-layer sleeve structure, the inner layer is a corrugated tube, and the outer layer is a sleeve, so that the ends of the corrugated tube are extended outward from the two ends of the sleeve, the outer wall of the corrugated tube is abutted against the inner wall of the short tube-shaped crimping tube, the outer peripheral surface of the crimping tube connection port is crimped against the inner wall of the sleeve, and then the extended end of the corrugated tube is bent to form a bending section parallel to the cross-sectional direction of its own pipe mouth, the bending section is crimped in parallel to the outer end surface of the annular flange, and then the outer end surface of the connecting end of the equipment hard pipe is abutted against the crimping tube On the outer end face of the annular flange of the annular flange, and make the outer end face of the annular protrusion of the bent section crimped on the annular flange abut and be squeezed into the second annular groove, so that the bent section is clamped and fixed between the equipment hard pipe and the annular flange, and then the clamping groove of the clamp corresponds to the annular flange and the outer edge end of the connecting end, and then tighten the tightening handle to complete the connection between the flexible sleeve and the equipment hard pipe. At the same time, the other end of the flexible sleeve is treated with the same operation and connected to the equipment hard pipe of another device to connect the two devices.
[0053] Due to the double-layer sleeve structure of the present invention, the sleeve can protect the bellows and increase the life of the bellows. The sleeve is crimped with the compression tube to protect the pressure-bearing property of the bellows and ensure that the bellows can work normally. The ends of the bellows are extended to both sides and bent to be attached to the annular flange, and then clamped and fastened by the connecting end of the equipment hard pipe, and then the connection between the connecting end and the annular flange is tightened and sealed by a clamp. Since the end connection of the bellows is at the annular flange of the compression tube, the design of the tube extension flange is adopted. It avoids the sanitary dead corners caused by the crimped joints and replaces the role of the gasket, reducing the crimped joints to 1 surface (2 surfaces if a gasket is used), and the water will directly pass through the pipe body instead of the crimping joint between the bellows and the crimping tube, avoiding the impact of the water on the crimping joints and causing seams at the crimping joints. When the connecting sleeve is subsequently removed for cleaning, there is no need to clean the crimping joints. It is only necessary to flush the cleaning liquid into the inside of the pipe body and the end connection for cleaning, thereby improving the cleaning efficiency of the connecting sleeve.
[0054] Furthermore, the inner tube, clamp, equipment tube and crimping parts of the present application are all made of food-grade materials and will not cause hygiene and safety problems to food, etc. Therefore, the connecting hose of the present application can be used in the pharmaceutical, chemical, food and beverage industries.
[0055] Therefore, the connecting sleeve of the present application, by crimping the bent section of the bellows with the annular flange of the crimping tube, prevents water from flowing through the crimping joint of the tube body, reduces the impact of the generation and enlargement of joints due to the internal tube pressure and the water hammer effect, does not form sanitary dead corners, and facilitates cleaning of the inner wall and connection of the bellows. At the same time, by providing a clamp, the bent section of the bellows is clamped and fixed between the connecting end of the equipment hard pipe and the annular flange, thereby improving the stability of the tube body connection, avoiding direct contact between the bent section of the bellows and the water body or liquid, and reducing the cleaning frequency.
[0056] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.
[0057] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A flexible connecting sleeve that is easy to clean, characterized in that: include: A sleeve assembly (1), the sleeve assembly (1) comprising a bellows (11) and a sleeve (12), the sleeve (12) being sleeved on the outside of the bellows (11), and two ends of the bellows (11) extending outward along two ends of the sleeve (12); The crimping tube (2) is two in number and one end of the crimping tube (2) is a connection port, and the other end is provided with an annular flange (21); the inner side surfaces of the two ends of the sleeve (12) are respectively crimped to the outer peripheral wall surfaces of the connection ports of the two crimping tubes (2); the two ends of the corrugated tube (11) coaxially pass through the two crimping tubes (2) and the ends are bent to form a bent section (111) parallel to the cross-sectional direction of the tube mouth; the outer end surface of the annular flange (21) is parallel to and in contact with the bent section (111); Equipment hard pipes (3), the equipment hard pipes (3) being two and one end of which is respectively connected to two equipments, the other end of which is integrally connected to a connecting end head (31) and is respectively connected to two ends of the corrugated pipe (11), the outer end surface of the connecting end head (31) and the outer end surface of the annular flange (21) are coaxially arranged with a spacing and abut against the bending section (111), and the bending section (111) is clamped and fixed between the connecting end head (31) and the annular flange (21); A clamp (4) is coaxially sleeved on the outer edge of the annular flange (21) and the connecting end (31) at a corresponding abutment position, and a tightening handle (41) is provided on one end of the clamp (4).
2. The flexible connecting sleeve that is easy to clean according to claim 1, characterized in that: The contact section between the outer peripheral wall surface of the corrugated tube (11) and the inner wall surface of the tube body of the compression tube (2) is a smooth surface section.
3. The flexible connecting sleeve that is easy to clean according to claim 1, characterized in that: A first annular groove (211) is provided on the wall surface where the annular flange (21) abuts against the bending section (111); an annular clamping edge (1111) abutting against the inner bottom surface of the notch of the first annular groove (211) is provided on one side of the outer edge of the bending section (111); the annular clamping edge (1111) is pressed into the first annular groove (211) and its height is higher than the notch depth of the first annular groove (211), so that an annular protrusion (1112) opposite to the annular clamping edge (1111) is formed on the other side of the outer edge of the bending section (111).
4. The flexible connecting sleeve that is easy to clean according to claim 3, characterized in that: The connecting end (31) is also provided with a second annular groove (311), and the outer wall surface of the annular flange (21) abuts against the outer end surface of the connecting end (31) and squeezes the annular protrusion (1112) to be correspondingly engaged with the second annular groove (311).
5. The flexible connecting sleeve that is easy to clean according to claim 1, characterized in that: The clamp (4) comprises two semicircular clamping rings (42) hinged at one end, the other ends of the two clamping rings (42) extend in parallel in a direction away from the hinged end to form a connecting plate (43), the two connecting plates (43) are coaxially provided with screw holes, and the fastening handle (41) is screwed into the screw holes to fix the two clamping rings (42).
6. The flexible connecting sleeve that is easy to clean according to claim 5, characterized in that: The inner sides of the two clamping rings (42) are each provided with a clamping groove (421), and the clamping groove (421) is tightly clamped with the outer edge end connected to the annular flange (21) and the connecting end (31).
7. A flexible connecting sleeve that is easy to clean according to any one of claims 1 to 6, characterized in that: The sleeve (12) is crimped onto the outer peripheral wall of the crimping tube and a tightening sleeve (5) is sleeved thereon.