DE202019104934U1 - A permeable barrier layer co-operating with a mud agitator head for in situ consolidation - Google Patents

Abstract

A permeable barrier protection device cooperating with a slurry stirrer head for in situ consolidation, characterized by comprising an inner support spoke, a water resistant bearing and a protective tire skirt; in that the head portion of the inner support spoke is welded to the bearing inner race of the water resistant bearing, the bearing outer race of the water resistant bearing and the protective tire skirt are fastened together, and the spoke inner ring secures the inner support spoke and the side wall of the stirring head together become.

Description

Technical area

The present utility model relates to the art of slurry in situ solidification, and more particularly relates to a permeable barrier protection device cooperating with a slurry stirrer head for in situ consolidation.

Technical background

Sanitary wastewater treatment causes too many municipal sludges. In view of the fact that our country has long been focusing more on wastewater treatment, rarely on sludge treatment, the high moisture content sludges have been temporarily dammed, arbitrarily deflated or dumped directly into the landfill. In order to prevent the ingress and spreading of seepage water into the undisturbed undisturbed soil, the leaching of the sludge pit during the accumulation and temporary damming up of the sludge was often indispensable. This results in a variety of the mud pits with certain permeability barriers. As a result, how to properly treat past sludge pits and mitigate possible environmental hazards is becoming a central issue in research and engineering today. For the currently customary treatment methods of the existing sludge pits, two measures can be applied, namely in-situ solidification and ex-situ remediation.

The sludge-in-situ solidification device is a mechanical device for large scale treatment of soft soil. In this case, in particular, the mechanical stirring head is the essential component of the entire device. By the rotary movement of the mechanical stirring head in the vertical direction, the attached propeller blade is moved, which thus uniformly mixes and injects the powdery agent and the plastic sludge to the in-situ solidification perform. So far, the generic devices are widely used, especially in the domestic project of in situ consolidation. Since there is no protection required therefor, the propeller blade in use can easily be torn and destroyed due to the misuse of the permeability barrier layer of the existing sludge pits, in particular the geomembrane (HDPE geomembrane) therein, so that the failure of the entire permeability barrier can be effected. It comes thus to large leakage and the secondary load.

content

In view of the disadvantages of the above aspects, the present utility proposes a permeable barrier protective device cooperating with a slurry stirring head for in-situ solidification. By providing such a device on the stirring head, the risk of damage to the already existing at the construction site permeability barrier layer can be reduced by the agitating blade during the construction process at the same time efficiently, so that the actual permeability barrier of the sludge pit complete preserved.

In order to achieve the above-mentioned object, the present utility proposes a permeable barrier protective device cooperating with a mud-stirring head for in-situ solidification, comprising: an inner support spoke, a water resistant bearing and a protective tire skirt; wherein the head portion of the inner support spoke is welded to the bearing inner race of the water resistant bearing, the bearing outer race of the water resistant bearing and the protective tire skirt are fastened together, and the spoke inner ring secures the inner support spoke and the side wall of the stirring head together become.

In the technical concept of the present invention, a rolling bearing is preferably provided as the water resistant bearing having a bearing inner race, a bearing outer race, and a roller. The inner periphery of the bearing inner race is welded to the head portion of the inner support spoke, and the outer periphery of the bearing outer race is secured to each other with the protective tire skirt. The roller is spherical. In this case, the bearing outer ring and the bearing inner ring are arranged rotatably relative to one another about the roller.

In the technical concept of the present invention, the number of the spoke disks of the inner support spoke is preferably an odd number not less than 3.

In the technical concept of the present invention, the spoke inner ring of the inner support spoke is preferably provided with a plurality of attachment holes through which the bolt can be inserted to secure the inner support spoke to the stirring head.

In the technical concept according to the invention, the side wall center point of the stirring head can preferably coincide with the center of the circle of the spoke inner ring. In the technical concept according to the invention, the outer ring diameter of the water-resistant bearing may preferably not be less than the diameter of the stirring blade of the stirring head.

In the technical concept according to the invention, the protective tire casing is preferably made of rubber material and has a thickness of 5 to 15 millimeters. The protective tire casing is glued to the water-resistant bearing by means of adhesive.
In the technical concept according to the invention, the inner support spoke is preferably made of aluminum or magnesium alloy and the water-resistant bearing is preferably made of stainless steel.

In the technical concept according to the invention, the inner periphery of the bearing inner ring and the head region of the inner support spoke are preferably directly welded by the tungsten inert gas method.

1. (1) Die innere Stützspeiche und das groß dimensionierte wasserresistente Lager sind in der erfindungsgemäßen Einrichtung nicht einteilig ausgebildet. Sie können nach der getrennten Verarbeitung bei dem Wolfram-Inertgas-Verfahren miteinander verschweißt werden. Dadurch ergibt sich eine gute Verbindungsfestigkeit.
2. (2) Die erfindungsgemäße Einrichtung ist einfach aufgebaut und komfortabel installierbar. Durch Wahl der Abmessung des wasserresistenten Lagers können die unterschiedlichen Anforderungen des für die In-Situ-Verfestigung vorgesehenen Rührkopfs an die Dimension (hauptsächlich Durchmesser) erfüllt werden.
3. (3) Während des Bauprozesses der Schlamm-In-Situ-Verfestigung und durch Einbau der erfindungsgemäßen Schutzeinrichtung, wird der unmittelbare Kontakt zwischen dem Rührblatt und der Durchlässigkeitssperre so wirkungsvoll vermieden, dass die Zerstörung der an der Seitenwand und dem Bodenbereich der Schlammgrube bereits bestehenden Durchlässigkeitssperre durch das Propellerblatt vermindert wird. Damit, dass die innere Stützspeiche und der Schutz-Reifenmantel aus Gummimaterial mittels des Wälzlagers verbunden sind, kann einerseits der Schutz-Reifenmantel aus Gummimaterial auf der Durchlässigkeitssperrschicht der Schlammgrube frei rollen; andererseits kann die innere Stützspeiche zusammen mit dem Rührkopf mitbewegt werden, ohne in ihrer Mischfunktion und Rührfunktion beeinträchtigt zu werden.

Compared to the prior art, the present utility model has the following advantages:

1. (1) The inner support spoke and the large-sized water-resistant bearing are not integrally formed in the device according to the invention. They can be welded together after separate processing in the tungsten inert gas process. This results in a good connection strength.
2. (2) The device of the invention is simple in construction and easy to install. By choosing the dimension of the water-resistant bearing, the different requirements of the stirring head provided for in-situ solidification to the dimension (mainly diameter) can be met.
3. (3) During the slurry in-situ consolidation process and installation of the protection device according to the invention, the direct contact between the agitating blade and the permeability barrier is effectively prevented so that the destruction of the permeability barrier already existing on the side wall and bottom region of the mud pit is reduced by the propeller blade. With the inner support spoke and the protective tire casing made of rubber material being connected by means of the rolling bearing, on the one hand the protective rubber tire casing can roll freely on the permeability barrier layer of the mud pit; On the other hand, the inner support spoke can be moved together with the stirring head, without being affected in their mixing function and stirring function.

list of figures

• 1 Fig. 12 is a schematic diagram showing the structure of the permeable barrier protective device cooperating with a mud stirring head for in-situ solidification according to one embodiment of the present invention from the left side;
• 2 Fig. 11 is a schematic diagram showing the installation scheme of the permeable barrier protective device cooperating with a slurry stirring head for in-situ solidification according to an embodiment of the present invention. Therein, the individual components are provided with the following reference numerals:
  • 1 inner support spoke, 101 spoke inner ring, 102 attachment hole, 103 spoke disc, 2 water resistant bearing, 201 inner bearing race, 202 roller, 203 outer bearing race, 3 protective tire casing, 4 stirring head, 5 stirring blade, 6 bolts.

Concrete embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are a part of the embodiments of the present utility model and not all embodiments. All other embodiments, which are obtained by those skilled in the art based on the embodiments of the present utility model without creative effort, are within the scope of the present utility model.

In the following, the present utility model is explained in more detail with reference to the accompanying drawings:

According to 1 and 2 , the present utility model provides a permeable barrier protective device cooperating with a mud stirring head for in situ consolidation, comprising an internal support spoke 1 , a water resistant bearing 2 and a protective tire casing 3 , The head area of the inner support spoke 1 comes with the bearing inner ring 201 of the water-resistant bearing 2 welded. The bearing outer ring 203 of the water-resistant bearing 2 and the protective tire casing 3 are fastened together. The bearing inner ring 101 the inner support spoke 1 and the side wall of the stirring head are fastened together.

Concretely, in the description of the present utility model, it is to be understood that the position and component ratio represented by the terms "inner,""head,""inner,""outer,""sidewall,""center" only differ from those of the The figures shown position and component ratio emanates. It is considered to be only a relief and a simplification for the description of the present utility model, but does not purport to indicate or suggest that the said equipment or components are not necessarily to have the specific structure. Therefore, it should not be construed as limiting the present utility model. According to the invention, the inner support spoke 1 and the large-scale water-resistant bearing 2 not formed in one piece. The head area of the inner support spoke 1 and the bearing inner ring 201 of the water-resistant bearing 2 may be directly welded together after separate processing in the tungsten inert gas process. This results in a good connection strength. In this execution process, of course, other welding methods are applicable. The person skilled in the art may, during the execution process, choose the appropriate welding method for welding, as the case may be.

In the present embodiment, the water-resistant bearing 2 preferably provided as a rolling bearing having a bearing inner ring 201 , a bearing outer ring 203 as well as a roller 202 includes. In this case, the inner circumference of the bearing inner ring 201 with the head area of the inner support spoke 1 welded. The outer circumference of the bearing outer ring 203 and the protective tire casing 3 are fastened together. Preferably, the roller 202 spherically formed. The bearing outer ring 203 and the bearing inner ring 201 are around the roller 202 rotatably arranged relative to each other.

In the present embodiment, the number is for the spoke discs 103 the inner support spoke 1 preferably an odd number not less than 3. Preferably, there are 3 spoke discs 103 intended.

In the present embodiment, the bearing inner ring 101 the inner support spoke 1 preferably in advance with a plurality of mounting holes 102 provided by the 102 the bolt 6 can be brought in to the inner support spoke 1 with the stirring head 4 to anchor with each other. Preferably, the sidewall center of the stirring head can be 4 when anchored to the circle center of the spoke inner ring 101 coincide, namely is arranged concentrically.

In the present embodiment, the diameter of the bearing outer ring 203 of the water-resistant bearing 2 not less than the diameter of the stirring blade 5 of the stirring head 4 , Preferably, the diameter of the bearing outer ring 203 the same slightly larger than the diameter of the stirring blade 5 of the stirring head 4 ,

In the present embodiment, the protective tire casing 3 preferably made of rubber material and has a thickness of 5 to 15 millimeters, preferably 8 millimeters. The protective tire casing 3 is with the water resistant bearing 2 glued by adhesive.

In the present embodiment, the inner support spoke 1 preferably made of aluminum or magnesium alloy, preferably made of magnesium alloy. The water-resistant bearing 2 is preferably made of stainless steel.

By providing the protective device according to the invention on the present in existing devices mixing head 4 , the direct contact between the stirring blade and the permeability barrier of the sludge pit is effectively avoided. So that the inner support spoke 1 and the protective tire casing 3 By means of the rolling bearing, on the one hand, the stirring head 4 are not impaired in their turning and mixing function; on the other hand, this ensures that the protective tire casing 3 on the permeability barrier layer can roll so freely that the destructive effect is reduced for the existing permeability barrier.

The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. It will be apparent to those skilled in the art that various modifications and changes may be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. that have been made in the context of the present utility model should be included within the scope of the present utility model.

Claims (9)

A permeable barrier protective device cooperating with a slurry stirrer head for in situ consolidation, characterized by comprising an inner support spoke, a water resistant bearing and a protective tire casing; that the head area of the inner Support spoke is welded to the bearing inner ring of the water-resistant bearing, that the bearing outer ring of the water-resistant bearing and the protective tire casing are fastened together, and that the spoke inner ring of the inner support spoke and the side wall of the stirring head are fastened together. With a slurry stirrer head for in-situ consolidation cooperating permeable barrier protection device after Claim 1 characterized in that a rolling bearing is provided as the water-resistant bearing having a bearing inner race, a bearing outer race and a roller, that the inner periphery of the bearing inner race is welded to the head portion of the inner support spoke and the outer circumference of the bearing Outer ring with the protective tire casing is fastened together, that the roller is spherical, and that the bearing outer ring and the bearing inner ring are arranged rotatably relative to each other about the roller. With a slurry stirrer head for in-situ consolidation cooperating permeable barrier protection device after Claim 1 characterized in that the number of the spoke disks of the inner support spoke is an odd number not less than 3. With a slurry stirrer head for in-situ consolidation cooperating permeable barrier protection device after Claim 1 or 3 characterized in that the spoke inner ring of the inner support spoke is provided with a plurality of attachment holes through which the bolt can be inserted to secure the inner support spoke to the stirring head. With a slurry stirrer head for in-situ consolidation cooperating permeable barrier protection device after Claim 1 or 4 , characterized in that the side wall center of the stirring head coincides with the circle center of the spoke inner ring. With a slurry stirrer head for in-situ consolidation cooperating permeable barrier protection device after Claim 1 or 2 , characterized in that the outer ring diameter of the water-resistant bearing must not be less than the diameter of the stirring blade of the stirring head. With a slurry stirrer head for in-situ consolidation cooperating permeable barrier protection device after Claim 1 , characterized in that the protective tire casing is made of rubber material and has a thickness of 5 to 15 millimeters, and that the protective tire casing is adhesively bonded to the water-resistant bearing by means of adhesive. With a slurry stirrer head for in-situ consolidation cooperating permeable barrier protection device after Claim 1 , characterized in that the inner support spoke made of aluminum or magnesium alloy and the water-resistant bearing is made of stainless steel. With a slurry stirrer head for in-situ consolidation cooperating permeable barrier protection device after Claim 1 , characterized in that the inner circumference of the bearing inner ring and the head portion of the inner support spoke are directly welded by the tungsten inert gas method.

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