CN210269540U

CN210269540U - Concrete permeameter

Info

Publication number: CN210269540U
Application number: CN201920872530.3U
Authority: CN
Inventors: 陈国东; 黎成江; 林清泉; 丘伟杭; 余锦生; 朱兴汉
Original assignee: Fujian Southeast Tiezheng Engineering Quality Inspection Co Ltd
Current assignee: Fujian Southeast Tiezheng Engineering Quality Inspection Co Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-04-07
Anticipated expiration: 2029-06-11

Abstract

The utility model discloses a concrete permeameter, including the frame, be used for placing the cylindrical examination mould of test block to and the water intake system who feeds through in the examination mould bottom in the frame is established, examination mould bottom integrated into one piece has the base, be connected with four evenly distributed's bolt on the base, the base passes through bolt and frame bolted connection, examination mould bottom inboard is equipped with radial extension's bulge loop, the bulge loop upper surface is equipped with the sealing washer, be equipped with the through-hole on the examination mould lateral wall, through-hole threaded connection has feed mechanism, examination mould top is equipped with the lid, the lid is equipped with downwardly extending's lid wall all around, the lid passes through lid wall threaded connection in examination mould, lid center threaded connection has the fore-set that passes the lid. The utility model has the advantages of convenient paraffin adding and uniform sealing layer.

Description

Concrete permeameter

Technical Field

The utility model relates to a concrete detection equipment especially relates to a concrete permeameter.

Background

The permeability is an important index for evaluating the durability of concrete, and a concrete permeameter is a main instrument for measuring the permeability of concrete. The instrument mainly comprises a rack, wherein a test mold used for placing a concrete test block is arranged on the rack, and a water supply mechanism used for applying certain water pressure to the bottom surface of the concrete test block is arranged in the rack.

According to the testing method of the long-term performance and the durability of the ordinary concrete of GBJ82-85, when a test block is installed on the existing concrete permeameter, a layer of molten sealing paraffin material needs to be coated on the outer surface of the test block, then the test block is pressed into a preheated test mold under a pressurizing device, and the permeability test is carried out after cooling.

The above prior art solutions have the following drawbacks: the test block is difficult to grasp when the surface of the test block is coated with the paraffin material, and when the paraffin material is coated too little, the thickness of the sealing material covered on the outer surface of the test block is easy to be uneven, so that the sealing property between the test block and the test mold is influenced, and the test accuracy is poor; when the coating is excessive, the paraffin material on the surface of the test block needs to be cut, so that the workload is increased, and the sealing material is excessively consumed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a concrete permeameter has the advantage that it is convenient to add paraffin, and the sealing layer is even.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a concrete permeameter, includes the frame, is used for placing the cylindrical examination mould of test block to and the water intake system who establishes in the frame intercommunication in the examination mould bottom, examination mould bottom integrated into one piece has the base, be connected with four evenly distributed's bolt on the base, the base passes through bolt and frame bolted connection, examination mould bottom inboard is equipped with radial extension's bulge loop, the bulge loop upper surface is equipped with the sealing washer, be equipped with the through-hole on the examination mould lateral wall, through-hole threaded connection has feed mechanism, examination mould top is equipped with the lid, the lid is equipped with downwardly extending's lid wall all around, the lid passes through lid wall threaded connection in examination mould, lid central threaded connection has the fore-set that passes the lid.

Through adopting above-mentioned technical scheme, down placing the test block from last, the bulge loop of test mould bottom has spacing effect to the test block. The side wall of the test mold is provided with a through hole, the through hole is in threaded connection with a feeding mechanism, paraffin is added into the test mold from the feeding mechanism after the paraffin is melted, a gap between the test mold and a test block is filled, and the test mold has the advantages of convenience in adding and uniform thickness. In order to avoid the paraffin oil to spill between bulge loop and the test block bottom, be equipped with the sealing washer at the bulge loop upper surface to be equipped with the lid in the examination mould top, lid threaded connection has the fore-set that passes the lid, through rotatory fore-set, exerts a decurrent power to the test block, thereby improves the leakproofness between bulge loop and the test block bottom.

The utility model discloses further set up to: the feeding mechanism comprises a conveying pipe in threaded connection with the through hole and a funnel fixedly connected to the tail end of the conveying pipe.

Through adopting above-mentioned technical scheme, the conveying pipeline is dismantled simple to operate to it is more favorable to gathering materials to be equipped with the funnel.

The utility model discloses further set up to: and a micro booster pump is arranged on the material conveying pipe.

By adopting the technical scheme, the paraffin wax filling device is beneficial to improving the flowing speed and efficiency of paraffin wax and filling the gap between the test block and the test mould more quickly.

The utility model discloses further set up to: the cover body is provided with a through hole.

Through adopting above-mentioned technical scheme, when experimental, can observe the condition of the upper surface of test block through the thru hole, can in time know the test block whether take place the infiltration.

The utility model discloses further set up to: the lid is equipped with the annular wedge ring of downwardly extending, the distance between wedge ring and the lid wall equals the thickness of examination mould lateral wall, the wedge ring is the elastic material.

Through adopting above-mentioned technical scheme, after putting the test block into the examination mould, threaded connection upper cover body again, the wedge ring is along with the lid downstream, and the distance between wedge ring and the lid wall equals the thickness of examination mould lateral wall, so the wedge ring can paste tight examination mould inner wall, can plug the clearance between test block and the examination mould at last, can avoid causing paraffin to leak the upper surface of test block from the clearance top adding the melting paraffin in-process to influence experimental going on. Furthermore, the wedge-shaped ring is made of elastic materials, and has a better sealing effect.

The utility model discloses further set up to: the inclined surface of the wedge ring faces inward.

Through adopting above-mentioned technical scheme, the inclined plane of wedge ring is inboard towards, at the decurrent motion in-process of wedge ring, more is favorable to plugging in the clearance of test block and examination mould, has the better effect that prevents that paraffin from spilling from the clearance top.

The utility model discloses further set up to: one side of the test mold, which is far away from the feeding device, is provided with a detachable chock block

By adopting the technical scheme, when paraffin is added, the stopper can be taken down, and the liquid level condition of the paraffin in the test mold can be observed through the plug hole. When the paraffin liquid level reaches the plug hole, the feeding is stopped, and the plug block is plugged.

To sum up, the utility model discloses a beneficial technological effect does:

through being equipped with the bulge loop in examination mould bottom, can play the effect of location to the test block, there is the lid at examination mould top threaded connection, and lid threaded connection has the fore-set that exerts pressure to the test block, is equipped with the sealing washer at the bulge loop upper surface, and both combine to improve the leakproofness between test block and the bulge loop greatly. The paraffin is filled in the gap between the inner wall of the test mold and the test block through the feeding device arranged on the side wall of the test mold, the operation is simple and convenient, and the condition that the thickness of the sealing material coated on the surface of the test block is uneven is avoided.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a partial cross-sectional schematic view of the present embodiment;

fig. 3 is a schematic structural diagram of the cover body in the embodiment.

Description of reference numerals: 1. a frame; 2. a base; 3. a bolt; 4. testing a mold; 5. a cover body; 51. a cover wall; 52. a wedge ring; 53. through holes; 6. a top pillar; 7. a feeding mechanism; 71. a funnel; 72. a delivery pipe; 8. a through hole; 9. a gap; 10. testing blocks; 11. a chock block; 12. a seal ring; 13. a water intake system; 14. a convex ring; 15. a micro booster pump.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example (b): a concrete permeameter.

As shown in fig. 1 and 2, a concrete permeameter for testing the permeability of concrete comprises a frame 1, a test mold 4 arranged above the frame 1 and used for placing a test block 10, and a water inlet system 13 arranged in the frame 1 and communicated with the bottom of the test mold 4. The base 2 that the 4 bottom integrated into one piece of examination mould had the flange dish formula is connected with four evenly distributed's bolt 3 on the base 2 to base 2 is fixed in frame 1 through bolt 3. Sealing rubber is arranged between the base 2 and the frame 1, so that water can be prevented from leaking from a gap between the base 2 and the frame 1. The frame 1 is provided with a valve for controlling the water inlet system 13 and a corresponding pressure display instrument, and the water inlet system 13 is controlled to apply a continuous water pressure to the bottom of the test block 10 to test the permeability. The above is the same as the prior art, and therefore, the description is omitted.

As shown in fig. 2, the test mold 4 in this embodiment includes a base 2 for fixing the bolt 3 to the rack 1, and a protruding ring 14 extending toward the center of the test mold 4 and disposed at the bottom of the test mold 4, when the test block 10 is placed into the test mold 4, the protruding ring 14 can limit the test block 10, and the test block 10 will form a gap 9 with the inner wall of the test mold 4, and when the test block is placed, the test block should be disposed coaxially as much as possible, so that the gap 9 around is uniform. The side wall of the test mould 4 is provided with a through hole 8, and the through hole 8 is connected with a feeding mechanism 7 through threads and used for filling paraffin into a gap 9 formed by the test mould 4 and a test block 10. The feeding mechanism 7 comprises a hopper 71 for adding paraffin and a delivery pipe 72 for delivering paraffin. In addition, in order to improve the conveying efficiency of the feeding mechanism 7, it is preferable that the feed pipe 72 is provided with a micro-booster pump 15 for increasing the speed and flow rate at the time of feeding the paraffin. Further, be equipped with detachable chock 11 on the lateral wall that feed mechanism 7 was kept away from at examination mould 4, can take off chock 11 at the feeding process, observe the liquid level height of paraffin in the examination mould 4, when the paraffin liquid level reached chock 11 positions, stopped the feeding by plugging chock 11.

As shown in fig. 2 and 3, in order to improve the sealing performance between the protruding ring 14 and the test block 10 and prevent paraffin from flowing away from the bottom of the test block 10, a sealing ring 12 is provided on the upper surface of the protruding ring 14, a detachable cover body 5 is provided above the test block 4, a cover wall 51 extending downward is provided around the cover body 5, and the cover body 5 is screwed to the test block 4 through the cover wall 51. The center of the cover body 5 is in threaded connection with the top column 6 penetrating through the cover body 5, and is used for applying a downward force to the test block 10, so that the acting force between the test block 10 and the convex ring 14 is improved, the sealing performance of the test block 10 and the convex ring 14 is improved, and paraffin is prevented from leaking from the bottom of the test block 10. Furthermore, the top of the cover body 5 is provided with a through hole 53, which is convenient for an experimenter to observe whether the surface of the test block 10 in the test mold 4 has water seepage.

As shown in fig. 2 and 3, a ring of elastic wedge-shaped ring 52 is disposed on the cover 5 near the side wall, the wedge-shaped ring 52 is formed by welding a ring-shaped body on the cover and then covering a layer of rubber material on the surface, and a side of the wedge-shaped ring 52 away from the cover 5 has a certain inclined surface. The wedge ring 52 and the cover wall 51 are concentrically arranged, and the distance between the wedge ring 52 and the cover wall 51 is equal to the thickness of the side wall of the test mold 4. When the cap 5 is screwed into the test mold 4, the wedge ring 52 moves downward to be inserted into the gap 9 formed by the test block 10 and the test mold 4, so as to prevent the paraffin oil from leaking to the upper surface of the test block 10 during the injection process. Further, the inclined surface of the wedge ring 52 faces the center of the lid body 5, which facilitates the wedge ring 52 to be inserted into the gap 9.

The working principle of the embodiment is as follows: after the test mold 4 is preheated, the test block 10 is placed in the inner cavity of the test mold 4, the upper cover body 5 is connected through threads, the sealing performance of the convex ring 14 and the bottom of the test block 10 is improved by rotating the top column 6, the micro booster pump 15 is opened, the melted paraffin is added from the feeding mechanism 7, the plug block 11 is taken down, and the paraffin liquid level is observed. When the liquid level reaches the position of the plug 11, the feeding is stopped, and after cooling, the permeation test is performed.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a concrete permeameter, includes frame (1), is used for placing cylindrical examination mould (4) of test block (10) to and feed through in frame (1) in water intake system (13) of examination mould (4) bottom, examination mould (4) bottom integrated into one piece has base (2), be connected with four evenly distributed's bolt (3) on base (2), base (2) are connected its characterized in that through bolt (3) and frame (1): the testing mold is characterized in that a radially extending convex ring (14) is arranged on the inner side of the bottom of the testing mold (4), a sealing ring (12) is arranged on the upper surface of the convex ring (14), a through hole (8) is formed in the side wall of the testing mold (4), a feeding mechanism (7) is connected to the through hole (8) through threads, a cover body (5) is arranged above the testing mold (4), a cover wall (51) extending downwards is arranged on the periphery of the cover body (5), the cover body (5) is connected to the testing mold (4) through the cover wall (51) through threads, and a top column (6) penetrating through the cover body (5) is connected to the center of the cover.

2. A concrete penetrometer as claimed in claim 1, characterized in that: the feeding mechanism (7) comprises a material conveying pipe (72) in threaded connection with the through hole (8) and a funnel (71) fixedly connected to the tail end of the material conveying pipe (72).

3. A concrete penetrometer as claimed in claim 2, characterized in that: and a micro booster pump (15) is arranged on the material conveying pipe (72).

4. A concrete penetrometer as claimed in claim 1, characterized in that: the cover body (5) is provided with a through hole (53).

5. A concrete penetrometer as claimed in claim 1, characterized in that: the lid (5) are equipped with annular wedge ring (52) of downwardly extending, the distance between wedge ring (52) and apron (51) equals the thickness of examination mould (4) lateral wall, wedge ring (52) are the elastic material.

6. A concrete penetrometer as claimed in claim 5, characterized in that: the inclined surface of the wedge ring (52) faces inward.

7. A concrete penetrometer as claimed in claim 1, characterized in that: and a detachable plug block (11) is arranged on one side, far away from the feeding mechanism (7), of the test mold (4).