A connecting device between a pipe and an aerator

Abstract

The invention provides a connecting device for a pipeline and an aerator, comprising two semicircular arc clamps with completely the same structure, wherein a clamping claw and a positioning rod are respectively arranged on the left and right sides of one end of the clamp, the axis of the inner arc surface of the clamping claw coincides with the axis of the positioning rod, the clamping claw of one clamping claw is clamped with the positioning rod of the other clamping claw, and the clamping claw is provided with a positioning shoulder at both ends of the positioning rod; the inner arc surface of the clamping claw is provided with a positioning block clamped with a positioning groove of the pipeline, the outer arc surface of the clamping claw is provided with a locking block of a hexagonal structure matching with the connecting surface of the aerator, the locking block is provided with a through hole, a first connecting block with an inner thread connected to the outer thread of the disc aerator is inserted into the through hole on one clamping claw, and a second connecting block with an outer thread connected to the inner thread of the tube aerator is inserted into the through hole on the other clamping claw; a clamping block and a connecting groove for fixing the two clamps are provided at the end of the clamping claw away from the clamping claw, and the manufacturing and installation costs of the invention are low.

Description

Technical Field

[0001] The invention relates to the technical field of aerators and accessories thereof, and in particular to a connecting device between a pipeline and an aerator. Background Art

[0002] Aerators have a great impact on the efficiency of oxygen transfer and the operating cost of sewage treatment in the field of sewage treatment. The development and application of aerators in China began in the mid-1980s. Representative ones include: perforated tube aerator, corundum aerator, disc microporous aerator, tubular aerator, jet aerator, diffused flow aerator, vortex mixing aerator, etc.

[0003] Aerators usually need to be installed on pipelines. There are three types of connection devices between aerators and pipelines in the prior art, but each has its own shortcomings:

[0004] 1. Plastic adhesive type, rubber knock-in type internal and external thread small saddle nozzle:

[0005] 1. Plastic gluing is time-consuming and labor-intensive, and is prone to air leakage due to uneven gluing. At the same time, the glue is corroded by sewage, which may cause debonding and product falling off.

[0006] 2. Although the rubber knock-in nozzle avoids the risk of air leakage and nozzle falling off, during the installation process, the nozzle will rotate as the product is tightened, which makes the installation troublesome and inefficient.

[0007] 2. All-inclusive saddle nozzle with stainless steel rod and bolt fixation:

[0008] 1. Excessive cost;

[0009] 2. Stainless steel bolts are severely corroded in sewage with high chloride ions, causing connection failure;

[0010] 3. The processing, assembly, transportation and on-site installation of stainless steel bolts are complicated and time-consuming, with poor convenience and low efficiency.

[0011] 3. Fully enclosed saddle nozzle fixed with plastic latch and pin:

[0012] 1. It requires many components and the mold opening cost is high;

[0013] 2. It is easy to loosen during thermal expansion and contraction and working vibration;

[0014] 3. Poor installation convenience.

[0015] Therefore, it needs to be improved urgently. Summary of the invention

[0016] In order to solve the above technical problems, the object of the present invention is to provide a connecting device between a pipeline and an aerator, which has low manufacturing and installation costs.

[0017] To achieve the above-mentioned purpose, a connecting device for a pipeline and an aerator of the present invention comprises two semicircular arc clamps with completely the same structure, one end of the clamp is provided with a claw and a positioning rod on the left and right sides respectively, the axis of the inner arc surface of the claw coincides with the axis of the positioning rod, the claw of one of the clamps is clamped with the positioning rod of the other clamp, and the clamp is provided with positioning shoulders at both ends of the positioning rod; the inner arc surface of the clamp is provided with a positioning block clamped with the positioning groove of the pipeline, the outer arc surface of the clamp is provided with a locking block of a hexagonal structure matching the connecting surface of the aerator, the locking block is provided with a through hole, a first connecting block with an internal thread threadedly connected to the external thread of the disc aerator is inserted into the through hole on one of the clamps, and a second connecting block with an external thread threadedly connected to the internal thread of the tubular aerator is inserted into the through hole on the other clamp; the clamp is provided with a clamping block and a connecting groove for fixing the two clamps at the end away from the claw.

[0018] Preferably, a limit block for limiting the maximum opening angle between the two clamps is provided at the end of the claw, and the cross section of the limit block is wedge-shaped.

[0019] Preferably, the outer arc surface of the clamping claw is provided with a first reinforcing rib extending to the clamping hoop, and the clamping hoop is provided with a second reinforcing rib on the side of the clamping claw.

[0020] Preferably, the end surface of the locking block is further provided with a plurality of locking protrusions corresponding to the plurality of locking grooves of the aerator.

[0021] Preferably, a plurality of third reinforcing ribs are provided between the clamp and the locking block.

[0022] Preferably, the first connecting block is provided with a wavy anti-slip rib engaged with the through hole, and the second connecting block is provided with an annular groove, and a sealing ring is provided in the annular groove.

[0023] Preferably, the first connecting block is made of rubber material, and the second connecting block is made of plastic material.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The two detachably connected clamps in the present invention have completely the same structure and are manufactured by the same mold. After assembly, the claw of one clamp is clamped with the positioning rod of the other clamp, so that the two clamps can rotate relative to each other around the axis of the positioning rod. After assembly, the clamp is installed on the pipeline, and the positioning block provided on the inner arc surface of the clamp is clamped with the prefabricated positioning groove of the pipeline, and the clamp block of one clamp is clamped with the connecting groove of the other clamp, so that the connection device and the pipeline can be connected and fixed, which can avoid the disadvantages of traditional metal bolts, latches, pins and other structures;

[0026] The number of molds opened is greatly reduced, the amount of materials used is greatly reduced, and the mold development cost is reduced by at least 50%. The assembly is quite convenient and the on-site installation is convenient. The structure of the claws and the positioning rod has a certain buffering and regulating effect on thermal expansion and contraction and mechanical vibration. The connection is firm and not easy to loosen. It has high reliability and can be applied to high chloride ion wastewater. The manufacturing, installation and time costs are all low;

[0027] The first connecting block with internal threads and the second connecting block with external threads are respectively threadedly connected to the disc aerator with external threads and the tube aerator with internal threads, and the first connecting block and the second connecting block are detachably connected to the clamp, so that a single connecting device can be connected to any combination of disc aerators and tube aerators, and the versatility is very good. Different combinations can be used under different working conditions, and the first connecting block and the second connecting block can be made into internal threads and external threads of various diameters, so that aerators of various specifications can be connected, and the scope of application is greatly broadened. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view of a single clamp in a connecting device between a pipeline and an aerator of the present invention;

[0029] Figure 2 It is a side view schematic diagram of a single clamp in a connecting device between a pipeline and an aerator of the present invention;

[0030] Figure 3 It is a three-dimensional structural schematic diagram of a single clamp in a connecting device between a pipeline and an aerator of the present invention;

[0031] Figure 4 It is an exploded side view of a connecting device between a pipeline and an aerator of the present invention;

[0032] Figure 5 It is a schematic diagram of the exploded three-dimensional structure of a connecting device between a pipeline and an aerator of the present invention.

[0033] In the figure: 1, clamp; 2, claw; 3, positioning rod; 4, positioning shoulder; 5, positioning block; 6, locking block; 7, through hole; 8, first connecting block; 9, second connecting block; 10, clamping block; 11, connecting groove. DETAILED DESCRIPTION

[0034] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following embodiments are given by way of example and detailed description with reference to the accompanying drawings.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0036] The present invention provides a connecting device for a pipeline and an aerator, comprising two semicircular arc clamps 1 with completely identical structures, wherein a clamping claw 2 and a positioning rod 3 are respectively provided on the left and right sides of one end of the clamp 1, wherein the axis of the inner arc surface of the clamping claw 2 coincides with the axis of the positioning rod 3, wherein the clamping claw 2 of one of the clamps 1 is clamped with the positioning rod 3 of the other clamp 1, and the clamp 1 is provided with positioning shoulders 4 at both ends of the positioning rod 3; the inner arc surface of the clamp 1 is provided with a positioning block 5 clamped with a positioning groove of the pipeline, The outer arc surface of the clamp 1 is provided with a hexagonal locking block 6 that matches the connecting surface of the aerator, and the locking block 6 is provided with a through hole 7, wherein a first connecting block 8 with an internal thread that is threadedly connected to the external thread of the disc aerator is inserted into the through hole 7 on one of the clamps 1, and a second connecting block 9 with an external thread that is threadedly connected to the internal thread of the tube aerator is inserted into the through hole 7 on the other clamp 1; the clamp 1 is provided with a clamping block 10 and a connecting groove 11 for fixing the two clamps 1 at the end away from the claw 2.

[0037] By adopting the above technical scheme, the two detachably connected clamps 1 in the present invention have completely the same structure and are manufactured by the same mold. After assembly, the claw 2 of one clamp 1 is clamped with the positioning rod 3 of the other clamp 1, thereby realizing the relative rotation of the two clamps 1 around the axis of the positioning rod 3. After assembly, it is installed on the pipeline, and the positioning block 5 set on the inner arc surface of the clamp 1 is clamped with the prefabricated positioning groove of the pipeline, and the clamping block 10 of one clamp 1 is clamped with the connecting groove 11 of the other clamp 1, thereby realizing the connection and fixation of the connecting device with the pipeline, which can avoid the disadvantages of traditional metal bolts, latches, pins and other structures; the positioning shoulder 4 realizes the positioning of the claw 2 on the one hand to prevent relative sliding between the two clamps 1, and on the other hand, it has the effect of improving the strength of the positioning rod 3 to prevent breakage at the clamping joint;

[0038] The number of molds is greatly reduced, the amount of materials used is greatly reduced, the mold development cost is reduced by at least 50%, the assembly is quite convenient, and the on-site installation is convenient. The structure of the claw 2 and the positioning rod 3 has a certain buffering and regulating effect on thermal expansion and contraction and mechanical vibration. The connection is firm and not easy to loosen. The reliability is high and it can be applied to high chloride ion wastewater. The manufacturing, installation and time costs are low;

[0039] The first connecting block 8 with internal threads and the second connecting block 9 with external threads are threadedly connected to the disc aerator with external threads and the tube aerator with internal threads respectively, and the first connecting block 8 and the second connecting block 9 are detachably connected to the clamp 1, so that a single connecting device can be connected to any combination of disc aerators and tube aerators, and the versatility is very good. Different combinations can be used under different working conditions, and the first connecting block 8 and the second connecting block 9 can be made into internal threads and external threads of various diameters, so that aerators of various specifications can be connected, and the scope of application is greatly broadened.

[0040] Preferably, a limit block for limiting the maximum opening angle between the two clamps 1 is provided at the end of the claw 2, and the cross section of the limit block is wedge-shaped.

[0041] By adopting the above technical solution, when one of the clamps 1 rotates to a certain angle around the axis of the positioning rod 3, the limit block abuts against the outer arc surface of the clamp 1 to prevent the clamp 1 from further rotating, thereby achieving the limitation of the maximum opening angle between the two clamps 1. It is found in practice that the maximum opening angle is preferably 70°, and the wedge-shaped structure ensures that within the rotation range of the maximum opening angle, the two clamps 1 can rotate relative to each other without interference.

[0042] Preferably, the outer arc surface of the clamping claw 2 is provided with a first reinforcing rib extending to the clamp 1 , and the clamp 1 is provided with a second reinforcing rib on the side of the clamping claw 2 .

[0043] By adopting the above technical solution, the first reinforcing rib and the second reinforcing rib can prevent the claw 2 from deforming or even breaking, which is beneficial to improving the connection strength between the two clamps 1.

[0044] Preferably, the end surface of the locking block 6 is also provided with a plurality of locking protrusions corresponding to the plurality of locking grooves of the aerator.

[0045] By adopting the above technical solution, a plurality of locking protrusions are correspondingly engaged with a plurality of locking grooves of the aerator, so that multiple connections of the aerator can be locked to prevent air leakage.

[0046] Preferably, a plurality of third reinforcing ribs are provided between the clamp 1 and the locking block 6 .

[0047] By adopting the above technical solution, a plurality of third reinforcing ribs can prevent the locking block 6 from deforming or even breaking, which is beneficial to improving the connection strength with the aerator.

[0048] Preferably, the first connecting block 8 is provided with a wavy anti-slip rib engaged with the through hole 7, and the second connecting block 9 is provided with an annular groove, and a sealing ring is provided in the annular groove.

[0049] By adopting the above technical solution, the anti-slip rib produces a certain deformation when the first connecting block 8 is knocked into the through hole 7, so that the first connecting block 8 can be smoothly inserted. After being inserted into place, the anti-slip rib restores its deformation and engages with the through hole 7, thereby locking the connection of the first connecting block 8 and preventing it from slipping out.

[0050] Preferably, the first connecting block 8 is made of rubber, and the second connecting block 9 is made of plastic.

[0051] By adopting the above technical solution, the disc aerator is connected and fixed to the first connecting block 8 made of soft rubber material, and the tube aerator is connected and fixed to the second connecting block 9 made of hard plastic material. The combination of soft and hard connection methods can not only solve the problem of damage to the glue caused by thermal expansion and contraction, working vibration and sewage corrosion, but also solve the problem of installation troubles, and at the same time make the entire connecting device safer and more reliable.

[0052] In summary, the above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereto. All equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification are within the scope covered by the patent of the present invention.

Claims

1. A connecting device for a pipeline and an aerator, characterized in that: The invention comprises two semicircular arc clamps with completely identical structures, wherein one end of the clamp is provided with a claw and a positioning rod on the left and right sides respectively, the axis of the inner arc surface of the claw coincides with the axis of the positioning rod, the claw of one of the clamps is clamped with the positioning rod of the other clamp, and the clamp is provided with positioning shoulders at both ends of the positioning rod; the inner arc surface of the clamp is provided with a positioning block clamped with the positioning groove of the pipeline, the outer arc surface of the clamp is provided with a locking block of a hexagonal structure matching the connecting surface of the aerator, the locking block is provided with a through hole, and a through hole on one of the clamps is inserted with a locking block for the disc aerator A first connecting block with an internal thread connected to the external thread of the aerator, and a second connecting block with an external thread connected to the internal thread of the tubular aerator is inserted in the through hole on the other clamp; the clamp is provided with a clamping block and a connecting groove for fixing the two clamps at the end away from the claw; the end face of the locking block is also provided with a plurality of locking protrusions corresponding to the plurality of clamping grooves of the aerator; the first connecting block is provided with a wavy anti-slip rib clamped with the through hole, and the second connecting block is provided with an annular groove, and a sealing ring is provided in the annular groove; the first connecting block and the second connecting block can be made into internal threads and external threads of various diameters.

2. A connecting device for a pipeline and an aerator according to claim 1, characterized in that: A limit block for limiting the maximum opening angle between the two clamps is provided at the end of the clamping claw, and the cross section of the limit block is wedge-shaped.

3. A connecting device for a pipeline and an aerator according to claim 2, characterized in that: The outer arc surface of the clamping claw is provided with a first reinforcing rib extending to the clamping hoop, and the clamping hoop is provided with a second reinforcing rib on the side of the clamping claw.

4. A connecting device for a pipeline and an aerator according to claim 3, characterized in that: A plurality of third reinforcing ribs are arranged between the clamp and the locking block.

5. The connecting device of a pipeline and an aerator according to claim 1, characterized in that: The first connecting block is made of rubber, and the second connecting block is made of plastic.

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