Pipe connection device and conveying apparatus
By combining the integrated transmission pipe, support pipe, and protective pipe, the problem of pipe connection device rupture under high pressure is solved, thus improving safety and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN SHANGSHUI INTELLIGENT CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-10
AI Technical Summary
Traditional pipe connection devices are prone to rupture under high pressure, leading to material spillage, endangering workers and polluting the environment.
The structure adopts an integrated transmission pipe, a support pipe and a protective pipe sleeved on the outside. The support pipe deforms under high pressure to absorb the impact force, and the protective pipe prevents the material from escaping, forming a multi-layered safety redundancy.
It effectively reduces material leakage, improves the safety of pipeline connection devices, reduces safety risks and maintenance costs, and extends service life.
Smart Images
Figure CN224479432U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of material conveying technology, and in particular to a pipe connection device and conveying equipment. Background Technology
[0002] In material conveying systems, different devices are connected via conveying pipelines. These pipelines are typically connected by coupling devices. However, traditional coupling devices are prone to rupture when the pressure inside the pipeline is too high, causing materials to escape into the external environment, posing a hazard to workers and polluting the environment. Utility Model Content
[0003] This application provides a pipe connection device and a conveying equipment to solve the problem of easy material leakage after the connection device breaks.
[0004] In a first aspect, this application provides a pipe connection device, comprising a first connecting flange, a second connecting flange, a transmission pipe, a support pipe, and a protective pipe. The second connecting flange is spaced apart from the first connecting flange. The two ends of the transmission pipe are fixedly connected to the first connecting flange and the second connecting flange, respectively, and the transmission pipe is an integral structure. The support pipe is sleeved on the outside of the transmission pipe, and the two ends of the support pipe are fixedly connected to the first connecting flange and the second connecting flange, respectively. The protective pipe is sleeved on the outside of the support pipe.
[0005] In some embodiments, the support tube includes a first tube section and a second tube section, the first tube section is fixedly connected to the first connecting flange, the second tube section is fixedly connected to the second connecting flange, the first tube section and the second tube section are independently arranged, and one end of the first tube section near the second tube section is sleeved on the outside of the second tube section.
[0006] In some embodiments, the first pipe portion includes a body portion and a retaining ring portion. The body portion is connected to the first connecting flange, and the retaining ring portion is connected to the end of the body portion away from the first connecting flange and sleeved on the end of the second pipe portion away from the second connecting flange. The cross-sectional area of the retaining ring portion is larger than the cross-sectional area of the body portion.
[0007] In some embodiments, the end of the protective tube near the first connecting flange is fixedly and sealed to the support tube, and / or the end of the protective tube near the second connecting flange is fixedly and sealed to the support tube.
[0008] In some embodiments, the transmission tube and the protective tube are both flexible tubes, and the support tube is either a flexible tube or a rigid tube.
[0009] In some embodiments, the transmission tube is a retractable structure, and / or the protective tube is a retractable structure.
[0010] In some embodiments, the pipe connection device further includes a positioning post connected between the first connecting flange and the second connecting flange.
[0011] In some embodiments, the wall thickness of the transmission tube is 0.5mm-3mm, and the wall thickness of the support tube is 2mm-3mm.
[0012] In some embodiments, the protective tube includes a first filter tube and a second filter tube, the first filter tube is fixedly connected to the first connecting flange, the second filter tube is fixedly connected to the second connecting flange, the first filter tube is independently arranged relative to the second filter tube, and one of the first filter tube and the second filter tube is sleeved on the outside of the other.
[0013] Secondly, this application provides a conveying device, which includes a receiving chamber, a chamber pump, and a pipeline connection device as described in any one of the above. The pipeline connection device is connected between the receiving chamber and the chamber pump and is used to connect the receiving chamber and the chamber pump.
[0014] In the pipeline connection device and conveying equipment provided in this application, the transmission pipe is an integral structure, with a support pipe sleeved on the outside of the transmission pipe and a protective pipe sleeved on the outside of the support pipe. On the one hand, the integral structure of the transmission pipe prevents material leakage and reduces the resistance encountered by the material when moving within the transmission pipe. On the other hand, the support pipe enhances the pressure resistance of the transmission pipe. When the pressure inside the transmission pipe becomes too high and it bursts, the deformation of the support pipe absorbs the impact force during the burst, reducing the risk of rupture and preventing material leakage. In the event of a rupture, the support pipe can block the leaking material, reducing the amount of leakage. Furthermore, when the pressure inside the pipeline is too high and causes the support pipe and transmission pipe to rupture, the protective pipe can block the material, preventing it from escaping outside the pipeline connection device. Thus, through the multi-layered safety redundancy of the transmission pipe, support pipe, and protective pipe, the safety of the pipeline connection device is improved, preventing material from escaping into the external environment, avoiding harm to workers, reducing safety risks, and preventing environmental pollution. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the conveying equipment provided in the embodiments of this application.
[0017] Figure 2 This is a schematic diagram of the pipe connection device provided in the embodiments of this application.
[0018] Figure 3 This is a cross-sectional view of the pipe connection device provided in the embodiment of this application.
[0019] Figure 4 This is a cross-sectional view of the support tube provided in some embodiments of this application.
[0020] Figure 5 This is a cross-sectional view of a pipe connection device provided in some embodiments of this application.
[0021] Key reference numerals in the drawings: Conveying equipment 100; Pipe connection device 10; First connecting flange 11; Second connecting flange 12; Transmission pipe 13; Pleated part 131; Support pipe 14; First pipe section 141; Body section 1411; Retaining ring section 1412; Second pipe section 142; Weakening groove 1421; Protective pipe 15; First filter pipe 151; Second filter pipe 152; Clamp 16; Positioning column 17; Receiving chamber 21; Chamber pump 22; Weighing sensor 23; Radial direction X; Axial direction Y; Circumferential direction C.
[0022] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0024] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0025] It should be noted that the terminology in the specification, claims, and accompanying drawings of this application is for describing specific embodiments only and is not intended to limit this application. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. The term "and / or" as used in this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.
[0026] In the embodiments of this application, for the purpose of clearer description, Figure 1 and Figure 2 For reference, in this application, the X-axis is defined as the radial direction of the pipe connection device 10, the Y-axis is defined as the axial direction of the pipe connection device 10, and the C-direction is defined as the circumferential direction of the pipe connection device 10. The radial direction X of the pipe connection device 10 is perpendicular to the axial direction Y.
[0027] Please refer to the following: Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of the conveying device 100 provided in the embodiments of this application. Figure 2 This is a schematic diagram of the pipe connection device 10 provided in the embodiments of this application. Figure 3 This is a cross-sectional view of the pipe connection device 10 provided in an embodiment of this application. The conveying equipment 100 includes a receiving bin 21, a bin pump 22, and the pipe connection device 10 as described in any embodiment of this application. The pipe connection device 10 is connected between the receiving bin 21 and the bin pump 22, and is used to connect the receiving bin 21 and the bin pump 22, allowing material to be transferred between the receiving bin 21 and the bin pump. The conveying equipment 100 and the pipe connection device 10 in this embodiment can be applied in the lithium battery industry. The pipe connection device 10 is connected to a powder conveying pipeline in the lithium battery industry for conveying battery powder raw materials. For example, the conveying equipment 100 and the pipe connection device 10 can be used to convey lithium hexafluorophosphate powder.
[0028] The pipe connection device 10 includes a first connecting flange 11, a second connecting flange 12, a transmission pipe 13, a support pipe 14, and a protective pipe 15. The second connecting flange 12 and the first connecting flange 11 are spaced apart along the axial direction Y of the pipe connection device 10. The first connecting flange 11 and the second connecting flange 12 can be connected to other pipes respectively by bolts. The dimensions of the first connecting flange 11 and the second connecting flange 12 can adopt the national standard dimensions in the lithium battery industry to facilitate connection with the standard interfaces of relevant equipment in the lithium battery industry. The two ends of the transmission pipe 13 are fixedly connected to the first connecting flange 11 and the second connecting flange 12 respectively. The transmission pipe 13 has an integral structure. The support pipe 14 is sleeved on the outside of the transmission pipe 13. The two ends of the support pipe 14 are fixedly connected to the first connecting flange 11 and the second connecting flange 12 respectively. The protective pipe 15 is sleeved on the outside of the support pipe 14.
[0029] In material conveying systems, different devices are connected via conveying pipelines. These pipelines are typically joined together using connecting devices. Traditional connecting devices are usually made of a single layer of flexible material, which is prone to rupture under excessive pressure within the pipeline. This can lead to a large amount of toxic powder escaping into the external environment. Due to the lack of protective structures in traditional connecting devices, the powder escape rate is often as high as 30% or more. Workers are easily exposed to the toxic powder released into the environment, causing serious harm to workers and polluting the environment.
[0030] In this embodiment, the transmission pipe 13 is an integral structure, with a support pipe 14 sleeved on the outside of the transmission pipe 13 and a protective pipe 15 sleeved on the outside of the support pipe 14. On one hand, the integral structure of the transmission pipe 13 prevents material leakage during material transport and reduces the resistance encountered by the material moving within the transmission pipe 13. On the other hand, the support pipe 14, by supporting the transmission pipe 13, improves its pressure resistance. When the pressure inside the transmission pipe 13 becomes too high and causes a burst, the deformed support pipe 14 absorbs the impact force during the burst, reducing the risk of rupture and preventing material leakage. In the event of a rupture, the support pipe 14 can block the leaking material, reducing the amount of leakage. Furthermore, when the internal pressure of the pipe becomes too high and... In the extreme case of rupture of the support pipe 14 and the transmission pipe 13, the protective pipe 15 can block and filter the material, preventing it from escaping outside the pipe connection device 10. Compared with traditional single-layer pipe connection devices, the multi-layer safety redundancy of the transmission pipe 13, support pipe 14 and protective pipe 15 in this embodiment can block more than 90% of the powder from escaping after the pipe bursts, thereby improving the safety of the pipe connection device 10, reducing safety accidents, preventing material from escaping into the external environment, avoiding harm to operators, reducing the safety risks to operators during normal or accidental operation of the equipment, protecting the health and safety of operators, preventing environmental pollution, and increasing the service life of the pipe connection device 10, reducing the replacement frequency of the pipe connection device 10 and reducing maintenance costs.
[0031] The support pipe 14 includes a first pipe section 141 and a second pipe section 142. The first pipe section 141 is fixedly connected to the first connecting flange 11. The second pipe section 142 is fixedly connected to the second connecting flange 12. The first pipe section 141 and the second pipe section 142 are independently arranged. The end of the first pipe section 141 near the second pipe section 142 is sleeved on the outside of the second pipe section 142. In this way, when the internal pressure of the transmission pipe 13 is too high and bursts, the second pipe section 142 can deform under the pressure. When the second pipe section 142 deforms, it can absorb the impact force during the burst. After deformation, the second pipe section 142 abuts against the inner wall of the first pipe section 141, thereby forming a seal and protection with the first pipe section 141 to prevent powder from leaking to the outside of the support pipe 14.
[0032] Specifically, in this embodiment, the first pipe section 141 includes a body section 1411 and a retaining ring section 1412. The body section 1411 is connected to the first connecting flange 11. The retaining ring section 1412 is connected to the end of the body section 1411 away from the first connecting flange 11 and is sleeved on the end of the second pipe section 142 away from the second connecting flange 12. The cross-sectional area of the retaining ring section 1412 is larger than the cross-sectional area of the body section 1411. Along the radial direction X of the pipe connection device 10, the retaining ring section 1412 and the second pipe section 142 are spaced apart. Along the axial direction Y of the pipe connection device 10, the retaining ring section 1412 is located at the middle position of the pipe connection device 10. When the internal pressure of the transmission pipe 13 is too high and an explosion occurs, on the one hand, the gap between the retaining ring portion 1412 and the second pipe portion 142 can provide space for the deformation of the second pipe portion 142. Since the main body portion 1411 is impacted before the retaining ring portion 1412, the deformation of the main body portion 1411 allows the end of the retaining ring portion 1412 away from the main body portion 1411 to approach and abut against the second pipe portion 142, forming a seal between the first pipe portion 141 and the second pipe portion 142 to prevent powder leakage. On the other hand, the retaining ring portion 1412 can form a weak point in the support pipe 14, guiding the impact force during the explosion. First, the impact is directed at the location near the retaining ring 1412 corresponding to the support pipe 14, thereby releasing the energy during the explosion in a directional manner and preventing the overall structure of the pipe connection device 10 from failing. On the other hand, when assembling the pipe connection device 10 with other pipes, the retaining ring 1412 and the second pipe section 142 are spaced apart, which allows the relative positions of the first pipe section 141 and the second pipe section along the axial direction Y and radial direction X of the pipe connection device 10 to be adjustable. This allows the pipe connection device 10 to still be connected to other pipes even when they are not coaxially aligned, thereby eliminating coaxial errors between pipes and reducing assembly difficulty.
[0033] The cross-sectional shapes of the first pipe portion 141 and the second pipe portion 142 can be circular. The retaining ring portion 1412 and the body portion 1411 can be cylindrical, with the diameter of the retaining ring portion 1412 being larger than the diameter of the body portion 1411. One of the body portion 1411 and the retaining ring portion 1412 is provided with an extension extending in the radial direction X along the pipe connection device 10, which is used to connect the body portion 1411 and the retaining ring portion 1412 together. In some embodiments, the cross-sectional shapes of the first pipe portion 141 and the second pipe portion 142 can also be triangular, rectangular, polygonal, elliptical, irregular, etc. In some embodiments, the body portion 1411 and the retaining ring portion 1412 can be integrally formed. In some embodiments, the body portion 1411 and the retaining ring portion 1412 can also be independently arranged and fixedly connected together by welding, fusion, bonding, etc.
[0034] In some embodiments, the first pipe portion 141 may also be integrally tapered. The cross-sectional area of the end of the first pipe portion 141 near the second connecting flange 12 is larger than the cross-sectional area of the end of the first pipe portion 141 near the first connecting flange 11. The cross-sectional area of the end of the first pipe portion 141 near the second connecting flange 12 is larger than the cross-sectional area of the end of the second pipe portion 142 near the first connecting flange 11, and the end of the first pipe portion 141 near the second connecting flange 12 is fitted onto the outside of the second pipe portion 142.
[0035] In this embodiment, the overlap length of the retaining ring portion 1412 and the second pipe portion 142 along the axial direction Y of the pipe connection device 10 is greater than or equal to the gap width between the retaining ring portion 1412 and the second pipe portion 142 along the radial direction X of the pipe connection device 10. When the second pipe portion 142 explodes and deforms, the end of the second pipe portion 142 deforms in a trend that spreads from the center of the pipe connection device 10 outwards. The degree of deformation of the second pipe portion 142 along the radial direction X of the pipe connection device 10 is greater than the degree of deformation along the axial direction Y of the pipe connection device 10. The overlap length being greater than or equal to the gap width allows the second pipe portion 142 and the retaining ring portion 1412 to abut together, forming a sealing protection. After the second pipe portion 142 is blocked by the retaining ring portion 1412, the second pipe portion 142 will increase in size along the axial direction Y of the pipe connection device 10 under pressure. The overlap length being greater than or equal to the gap width also prevents the second pipe portion 142 and the retaining ring portion 1412 from separating and abutting, avoiding seal failure and improving the leakage prevention capability of the pipe connection device 10.
[0036] Please see Figure 4 , Figure 4 This is a cross-sectional view of the support tube 14 provided in some embodiments of this application. In some embodiments, a weakening groove 1421 is provided on the second tube portion 142 at a position overlapping with the retaining ring portion 1412. The extending direction of the weakening groove 1421 is parallel to or at an angle to the axial direction Y of the pipe connection device 10. The wall thickness of the second tube portion 142 at the position corresponding to the weakening groove 1421 is less than the wall thickness at other corresponding positions. The weakening groove 1421 is used to provide a weak cracking point for the second tube portion 142 when it is subjected to pressure, so as to facilitate the cracking of the second tube portion 142 at the position of the weakening groove 1421, thereby realizing the cracking of the second tube portion 142 at a predetermined position, realizing the directional release of the burst impact force, and avoiding the problem of overall deformation and failure of the pipe connection device 10 due to cracking at other uncertain positions. The weakening groove 1421 can be provided through the end face of the second tube portion 142 away from the second connecting flange 12 to improve the weakening effect of the weakening groove 1421.
[0037] In some embodiments, a single weakening groove 1421 may be provided. In some embodiments, multiple weakening grooves 1421 may be provided, and the multiple weakening grooves 1421 may be arranged at equal or unequal intervals along the circumferential direction C of the second tube portion 142.
[0038] Please refer to the following: Figure 1 , Figure 2 and Figure 3 The protective pipe 15 is fixedly and sealed to the support pipe 14 at the end near the first connecting flange 11, and / or the protective pipe 15 is fixedly and sealed to the support pipe 14 at the end near the second connecting flange 12. This improves the protective effect of the protective pipe 15 on powder protection and reduces or prevents powder leakage in the event of a rupture in the support pipe 14 or the transfer pipe 13. The sealing connection between the protective pipe 15 and the support pipe 14 can be an adhesive seal, a welded seal, etc. The protective pipe 15 can be a wound pipe, with adhesive applied at the wound joint to fix and seal the two ends of the protective pipe 15 together along the circumferential direction C of the pipe connection device 10. In some embodiments, the protective pipe 15 can also be a seamless pipe.
[0039] In some embodiments, the end of the protective pipe 15 near the first connecting flange 11 is fixedly and sealed to the support pipe 14. The pipe connection device 10 may include a clamp 16, which is sleeved on the support pipe 14 and positioned near the first connecting flange 11. The clamp 16 is sleeved on the outside of the protective pipe 15 and is used to fix and seal the end of the protective pipe 15 near the first connecting flange 11 to the support pipe 14. Adhesive may be applied between the end of the protective pipe 15 near the first connecting flange 11 and the support pipe 14 to improve the sealing effect.
[0040] In some embodiments, the end of the protective pipe 15 near the second connecting flange 12 is fixedly and sealed to the support pipe 14. The pipe connection device 10 may include a clamp 16, which is sleeved on the support pipe 14 and positioned near the second connecting flange 12. The clamp 16 is sleeved on the outside of the protective pipe 15 and is used to fix and seal the end of the protective pipe 15 near the second connecting flange 12 to the support pipe 14. Adhesive may be applied between the end of the protective pipe 15 near the second connecting flange 12 and the support pipe 14 to improve the sealing effect.
[0041] In some embodiments, the ends of the protective pipe 15 near the first connecting flange 11 and near the second connecting flange 12 are fixedly and sealed to the support pipe 14, forming a closed cavity between the protective pipe 15 and the transmission pipe 13, thereby improving the protective effect of the pipe connection device 10. The pipe connection device 10 may include two clamps 16, each sleeved on the support pipe 14. One clamp is positioned near the first connecting flange 11, and the other near the second connecting flange 12. The two clamps 16 are respectively sleeved on the outside of the protective pipe 15, and are used to fix and seal the ends of the protective pipe 15 near the first connecting flange 11 and near the second connecting flange 12 to the support pipe 14. Adhesive may be applied between the ends of the protective pipe 15 near the first connecting flange 11 and near the second connecting flange 12 and the support pipe 14 to improve the sealing effect.
[0042] In this embodiment, the transmission pipe 13 and the protective pipe 15 are both flexible pipes, while the support pipe 14 is a rigid pipe. Thus, firstly, in the event of an explosion, the support pipe 14 expands under pressure, and the transmission pipe 13 can flexibly deform and adhere to the inner wall of the support pipe 14, reducing the risk of rupture during the explosion and keeping the transmission pipe 13 sealed to prevent dust leakage. Secondly, the support pipe 14 provides sufficient support for the transmission pipe 13, keeping it in a tubular shape and reducing the resistance of the transmission pipe 13 to material flow. When weighing sensors 23 are installed in the upstream and downstream equipment, the pressure on the pipe connection device 10 can be reduced. The force exerted by the upstream and downstream equipment reduces the adverse impact on the metering accuracy of the upstream and downstream equipment, ensuring that the metering accuracy error of the upstream and downstream equipment is less than 0.1%. Furthermore, the support of the support pipe 14 improves the pressure resistance of the pipe connection device 10, enabling it to withstand positive pressures of 0.5 MPa to 1.2 MPa. This also enhances the absorption and buffering effect of the support pipe 14 on the explosive impact, thereby improving the dust prevention capability of the pipe connection device 10. Thirdly, when the transmission pipe 13 and the support pipe 14 rupture due to an explosion, the support pipe... The rigid pipe 14 reduces the size of the cracks caused by the rupture of the support pipe 14, thus reducing the amount of powder leakage. The flexible pipe 15 allows the flexible pipe to deform flexibly when subjected to explosive impact force to absorb the impact force and prevent the protective pipe 15 from breaking under impact, thereby preventing dust from spilling out. Thus, through the multi-layer safety redundancy of the transmission pipe 13, support pipe 14, and protective pipe 15, the risk of toxic dust contact with workers is reduced, and the safety of the pipe connection device 10 is improved. Compared with traditional connection devices, the service life of the pipe connection device 10 can be increased to more than three years, and the maintenance cost of the pipe connection device 10 is reduced by 40%. Fourthly, when assembling the pipe connection device 10 with other pipes, the relative positions of the first connecting flange 11 and the second connecting flange 12 along the axial direction Y and radial direction X of the pipe connection device 10 can be adjusted. Thus, even when other pipes are not coaxially aligned, the pipe connection device 10 can still be connected to other pipes, realizing a soft connection between different pipes, thereby eliminating coaxial errors between pipes and reducing assembly difficulty.
[0043] In this application, a flexible tube refers to a tube that can freely deform under an external force smaller than its plastic deformation without causing plastic failure. A flexible tube can deform under its own weight. A rigid tube refers to a tube that can maintain its original shape or approximately its original shape under an external force smaller than its plastic deformation. A rigid tube maintains its shape under its own weight. Under the same external force, the deformation degree of a rigid tube is much smaller than that of a flexible tube.
[0044] The transmission pipe 13 and the protective pipe 15 can be fatigue-resistant pipes made of fatigue-resistant materials to improve their service life. For example, the transmission pipe 13 can be a polytetrafluoroethylene (PTFE) pipe, a polyurethane pipe, etc. The support pipe 14 can be a metal pipe or a reinforced composite material pipe. For example, the support pipe 14 can be a stainless steel pipe. Alternatively, the support pipe 14 can also be a carbon fiber pipe to provide sufficient support and prevent the introduction of magnetic foreign objects. The protective pipe 15 is used to block and filter dust; the protective pipe 15 can be made of canvas, metal wire mesh, etc.
[0045] In some embodiments, a nano-coating is provided on the inner wall of the transmission pipe 13 to improve the smoothness of the inside of the transmission pipe 13, reduce the resistance to material movement in the transmission pipe 13, thereby reducing the force exerted by the material on the transmission pipe 13, further reducing the force exerted by the pipe connection device 10 on the receiving chamber 21 and the chamber pump 22, improving the detection accuracy of the weighing sensor 23, and reducing the adhesion rate of high-viscosity materials on the inner wall of the transmission pipe 13.
[0046] In some embodiments, the support tube 14 can also be a flexible tube. The flexibility of the support tube 14 is less than that of the transmission tube 13 and the protective tube 15. The support tube 14 can maintain its shape under its own weight, thereby providing support for the transmission tube 13.
[0047] The transmission pipe 13 is a telescopic structure, and / or the protective pipe 15 is a telescopic structure. Exemplarily, the transmission pipe 13 is configured as a telescopic structure. In the normal state at the pipe connection device 10, the transmission pipe 13 is provided with a pleated portion 131. The pleated portion 131 is located close to the retaining ring portion 1412 along the axial direction Y of the pipe connection device 10. In the event of an explosion, the pleated portion 131 extends under pressure, causing the transmission pipe 13 to abut against the inner wall of the support pipe 14. Through the supporting effect of the support pipe 14 and the absorption of impact force by the extended pleated portion 131, the risk of rupture of the transmission pipe 13 is reduced, preventing dust leakage. When the transmission pipe 13 is in the extended state (i.e., the pleated portion 131 is stretched flat), the length of the transmission pipe 13 along the axial direction Y of the pipe connection device 10 is greater than the length of the support pipe 14.
[0048] In some embodiments, the protective tube 15 is configured as a telescopic structure. In the normal state of the pipe connection device 10, wrinkles or folds form on the protective tube 15. In the event of a rupture in the transmission tube 13 or the support tube 14, the protective tube 15 can extend to absorb the impact force, reducing the direct impact force on the protective tube 15 and preventing it from rupturing. Furthermore, the extended protective tube 15 increases the sealing space to accommodate more powder, effectively preventing dust leakage and improving the protective capability of the pipe connection device 10. In some embodiments, both the transmission tube 13 and the protective tube 15 are configured as telescopic structures to improve the impact resistance of the pipe connection device 10 and enhance its protective effect.
[0049] The wall thickness of the transmission pipe 13 is 0.5mm-3mm. On the one hand, a wall thickness greater than or equal to 0.5mm provides sufficient wall thickness and toughness, reducing the risk of rupture during bursting. On the other hand, a wall thickness less than or equal to 3mm prevents excessive wall thickness, which could cause the pipe to rupture when the pressure exceeds a threshold, releasing internal pressure and preventing damage to other equipment due to excessive pressure, while also reducing manufacturing costs. The wall thickness of the transmission pipe 13 can be specifically set according to actual needs and is not specifically limited in this application. For example, the wall thickness of the transmission pipe 13 can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3mm, etc.
[0050] The wall thickness of the support pipe 14 is 2mm-3mm. This serves two purposes: firstly, a wall thickness greater than or equal to 2mm provides sufficient support strength for the transmission pipe 13, improving the pressure resistance of the pipe connection device 10; secondly, a wall thickness less than or equal to 3mm allows the support pipe 14 to deform promptly under pressure when the pipe pressure exceeds a threshold, reducing internal pipe pressure, preventing external pipe rupture, and avoiding damage to other equipment due to excessive pressure. The wall thickness of the support pipe 14 can be specifically set according to actual needs and is not specifically limited in this application. For example, the wall thickness of the support pipe 14 can be 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3mm, etc.
[0051] In some embodiments, the pipe connection device 10 further includes a positioning post 17. The positioning post 17 is connected between the first connecting flange 11 and the second connecting flange 12. The positioning post 17 is used to support and position the first connecting flange 11 and the second connecting flange 12, so that during the assembly of the pipe connection device 10, the relative position between the first pipe section 141 and the second pipe section 142 can be easily adjusted, keeping the first pipe section 141 and the second pipe section 142 spaced apart. This also helps to ensure that the first pipe section 141 and the second pipe section 142 are concentrically arranged, so that in the event of an explosion, the pressure on the first pipe section 141 and the second pipe section 142 along the circumferential direction C of the pipe connection device 10 is uniform, avoiding large-scale local rupture of the first pipe section 141 and the second pipe section 142 due to uneven pressure, thus preventing dust leakage from the pipe connection device 10, improving the protective effect of the pipe connection device 10, and facilitating the connection and fixation of the first connecting flange 11 and the second connecting flange 12 with other pipes, reducing the assembly difficulty of the pipe connection device 10. Multiple positioning posts 17 may be provided. Multiple positioning posts 17 are equally spaced along the circumferential direction C of the pipe connection device 10 to improve the positioning effect of the positioning posts 17.
[0052] Please see Figure 5 , Figure 5 This is a cross-sectional view of the pipe connection device 10 provided in some embodiments of this application. In some embodiments, the protective pipe 15 includes a first filter pipe 151 and a second filter pipe 152. The first filter pipe 151 is fixedly connected to a first connecting flange 11. The second filter pipe 152 is fixedly connected to a second connecting flange 12. The first filter pipe 151 is independently arranged relative to the second filter pipe 152. One of the first filter pipe 151 and the second filter pipe 152 is sleeved on the outside of the other. The first filter pipe 151 and the second filter pipe 152 can be configured as cylindrical microporous plates, and the first filter pipe 151 and the second filter pipe 152 are tightly fitted together to improve the dust filtration effect of the protective pipe 15 and reduce the amount of dust escaping. Thus, through the dual explosion-proof protection of the support pipe 14 and the protective pipe 15, double protection can be provided for the transmission pipe 13, reducing the risk of dust leakage and improving the safety and service life of the pipe connection device 10.
[0053] Please see Figure 1 and Figure 2One of the first connecting flange 11 and the second connecting flange 12 is connected to the receiving bin 21, and the other of the first connecting flange 11 and the second connecting flange 12 is connected to the bin pump 22. A weighing sensor 23 is provided on the receiving bin 21 and / or the bin pump 22 to detect the weight of the receiving bin 21 and / or the bin pump 22, thereby detecting the material conveying speed and conveyed weight. Exemplarily, a weighing sensor 23 is provided on both the receiving bin 21 and the bin pump 22. In some embodiments, the conveying device 100 may provide a weighing sensor 23 on either the receiving bin 21 or the bin pump 22.
[0054] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A pipe connection device (10), characterized in that, include: First connecting flange (11); The second connecting flange (12) is spaced apart from the first connecting flange (11); The transmission pipe (13) has its two ends fixedly connected to the first connecting flange (11) and the second connecting flange (12) respectively. The transmission pipe (13) is an integral structure. A support tube (14) is sleeved on the outside of the transmission tube (13), and the two ends of the support tube (14) are fixedly connected to the first connecting flange (11) and the second connecting flange (12) respectively. The protective tube (15) is sleeved on the outside of the support tube (14).
2. The pipe connection device (10) according to claim 1, characterized in that, The support pipe (14) includes a first pipe section (141) and a second pipe section (142). The first pipe section (141) is fixedly connected to the first connecting flange (11), and the second pipe section (142) is fixedly connected to the second connecting flange (12). The first pipe section (141) and the second pipe section (142) are independently arranged. One end of the first pipe section (141) near the second pipe section (142) is sleeved on the outside of the second pipe section (142).
3. The pipe connection device (10) according to claim 2, characterized in that, The first pipe section (141) includes a body section (1411) and a retaining ring section (1412). The body section (1411) is connected to the first connecting flange (11). The retaining ring section (1412) is connected to the end of the body section (1411) away from the first connecting flange (11) and is sleeved on the end of the second pipe section (142) away from the second connecting flange (12). The cross-sectional area of the retaining ring section (1412) is larger than the cross-sectional area of the body section (1411).
4. The pipe connection device (10) according to claim 1, characterized in that, The protective tube (15) is fixed and sealed to the support tube (14) at the end near the first connecting flange (11), and / or the protective tube (15) is fixed and sealed to the support tube (14) at the end near the second connecting flange (12).
5. The pipe connection device (10) according to claim 1, characterized in that, The transmission pipe (13) and the protective pipe (15) are both flexible pipes, and the support pipe (14) is either a flexible pipe or a rigid pipe.
6. The pipe connection device (10) according to claim 1, characterized in that, The transmission tube (13) is a retractable structure, and / or the protective tube (15) is a retractable structure.
7. The pipe connection device (10) according to claim 1, characterized in that, The pipe connection device (10) further includes a positioning column (17), which is connected between the first connecting flange (11) and the second connecting flange (12).
8. The pipe connection device (10) according to claim 1, characterized in that, The wall thickness of the transmission tube (13) is 0.5mm-3mm, and the wall thickness of the support tube (14) is 2mm-3mm.
9. The pipe connection device (10) according to claim 1, characterized in that, The protective tube (15) includes a first filter tube (151) and a second filter tube (152). The first filter tube (151) is fixedly connected to the first connecting flange (11), and the second filter tube (152) is fixedly connected to the second connecting flange (12). The first filter tube (151) is set independently relative to the second filter tube (152), and one of the first filter tube (151) and the second filter tube (152) is sleeved on the outside of the other.
10. A conveying device (100), characterized in that, The conveying equipment (100) includes a receiving chamber (21), a chamber pump (22), and a pipe connection device (10) as described in any one of claims 1-9. The pipe connection device (10) is connected between the receiving chamber (21) and the chamber pump (22) and is used to connect the receiving chamber (21) and the chamber pump (22).