A device for in-situ sampling and rapid titration of chloride ion content of construction sand

Abstract

The utility model discloses a kind of sand chloride ion content in-situ sampling and rapid titration device for building, it is related to civil engineering material detection technical field, including movable frame, the top of movable frame is slidably connected with inner ring, three fixed rings are rotatably connected in the inside of inner ring, and screw sampler is clamped in the inside of fixed ring;In the utility model, the device integrates in-situ sampling and rapid titration process in movable frame body, three screw samplers can be lowered once and rotate three circles simultaneously;After titration plate is inserted into placing groove, it is automatically clamped, LED backplane overturning is locked, constant white light background is provided, cooperate with oscillating bottle, needle filter, AgNO3 titration pen, efficiently complete sample dissolving, filtering, coarse screening and fine dripping;Single trolley can be transferred, whole process does not need to carry and lift subpackage, time consumption is greatly reduced, save manpower, and mechanical depth, automatic clamping and constant backlight eliminate artificial error, test accuracy is improved a lot.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering material testing technology, specifically to an in-situ sampling and rapid titration device for chloride ion content in building sand. Background Technology

[0002] Sea sand, saline sand, and river sand sprayed with seawater during transportation often contain soluble chloride ions in the form of NaCl. Once chloride ions enter the concrete with the sand, they accelerate the electrochemical corrosion of the reinforcing steel, leading to structural cracking and spalling, and significantly shortening the design life of the building. The traditional method involves laboratory drying, grinding, water dissolution, and silver nitrate titration, a process that takes 2-3 days. Vehicle congestion at mixing plants and secondary handling at dockyards result in high demurrage fees due to "report delays." Therefore, the industry urgently needs a technology that can complete the integrated "sampling-pretreatment-quantification" process within 10 minutes at the unloading site, enabling "inspection upon arrival and unloading upon passing inspection," directly preventing substandard sand from being transported to the conveyor belt.

[0003] Current rapid testing still relies on separate tools: more than ten instruments such as handheld spiral sand extractors, light-shielding sample boxes, shaking bottles, and funnels. These often require two or more people to carry them on their shoulders and by hand, and on-site setup of tables, bottle washing, and record keeping are also necessary. The discrete tools and cumbersome procedures not only occupy storage space and take up a lot of time, but also lead to insufficient sampling depth, slow filtration, and large titration errors due to human coordination problems, ultimately affecting the accuracy of the test results. Utility Model Content

[0004] The purpose of this invention is to provide an in-situ sampling and rapid titration device for chloride ion content in building sand, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides... An in-situ sampling and rapid titration device for chloride ion content in building sand, comprising, A movable frame, the top of which is slidably connected to an inner ring, and the inner ring is rotatably connected to three fixed rings, the fixed rings being snapped with a spiral sampler. A control plate is fixed to the top of the movable frame. The top of the control plate has a placement slot for limiting the position of the titration plate. An LED backlight plate is rotatably connected to the top of the control plate.

[0006] The top of the mobile frame is symmetrically fixed with two grips and two positioning frames, and a fixing plate is fixed between the two positioning frames. The adjustment plate is fixed to the fixing plate.

[0007] A support frame is slidably connected to one side of the fixed plate. The support frame is fixedly connected to the inner ring. A one-way screw is rotatably connected inside the fixed plate. The one-way screw passes through the support frame and is screwed into it. A rocker arm is fixedly sleeved at the top of the one-way screw.

[0008] The top of the inner ring is rotatably connected to three mounting plates, the fixed ring is fixedly connected to the adjacent mounting plates, and the outer wall of the fixed ring is screwed with fixing screws.

[0009] An outer ring is rotatably sleeved on the outer wall of the inner ring, and an inner toothed ring is fixedly connected to the top of the outer ring. Gears are fixedly sleeved on the outer walls of the multiple mounting plates, and the multiple gears mesh with the inner toothed ring.

[0010] The top of the control plate is provided with a battery compartment. An L-shaped frame is slidably connected inside the control plate. The L-shaped frame can be movably engaged with the LED backlight panel. A placement slot is opened on the top of the control plate. Two clips are slidably connected on the inner wall of the placement slot. The two clips are symmetrically distributed and can be movably engaged with the titration plate. A bidirectional lead screw is rotatably connected inside the control plate. The bidirectional lead screw passes through the two clips, and the clips are screwed into adjacent sections of the bidirectional lead screw.

[0011] A storage cabinet is fixedly connected to the outer wall of the fixed plate, and a protective frame is fixedly connected to the top of the storage cabinet.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This device integrates in-situ sampling and rapid titration processes into a movable frame, enabling three spiral samplers to descend and rotate three times simultaneously in one go, quickly completing three-point depth sampling. The titration plate automatically clamps after being inserted into the placement slot, and the LED backlight panel flips to lock in position, providing a constant white light background. Combined with a shaking flask, needle filter, and AgNO3 titration pen, it efficiently completes sample dissolution, filtration, coarse sieving, and fine titration. It can be moved around by a single person using a trolley, eliminating the need for lifting and repackaging throughout the process, significantly reducing time and saving manpower. Moreover, mechanical depth determination, automatic clamping, and constant backlighting eliminate human error, greatly improving testing accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 In this utility model Figure 1 A magnified view of the structure at point A in the middle; Figure 3 This is a side sectional view of the fixing plate structure in this utility model; Figure 4 This is a schematic diagram of the card holder structure in this utility model; Figure 5This is a schematic diagram of the L-shaped frame structure in this utility model.

[0014] In the diagram: 10. Moving frame; 101. Handle; 11. Positioning frame; 111. Fixing plate; 112. One-way lead screw; 113. Rocker arm; 114. Support frame; 12. Inner ring; 121. Fixing ring; 122. Mounting plate; 123. Fixing screw; 124. Outer ring; 125. Internal gear ring; 126. Gear; 13. Spiral sampler; 14. Control plate; 141. LED backlight panel; 142. Battery compartment; 143. L-shaped frame; 144. Card holder; 145. Two-way lead screw; 146. Placement slot; 15. Dosing plate; 20. Placement cabinet; 21. Protective frame. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 This utility model provides a technical solution: an in-situ sampling and rapid titration device for chloride ion content in building sand, including a movable frame 10, an inner ring 12 slidably connected to the top of the movable frame 10, three fixed rings 121 rotatably connected inside the inner ring 12, and a spiral sampler 13 snapped into the inside of the fixed rings 121; a control plate 14, fixed to the top of the movable frame 10, the top of the control plate 14 having a placement groove 146 for limiting the titration plate 15, and an LED backlight plate 141 rotatably connected to the top of the control plate 14.

[0017] In practice, the mobile frame 10 is pushed to the side of the material pile, and the rocker arm 113 drives the one-way screw 112 to rotate, causing the support frame 114 and the inner ring 12 to descend as a whole. The cutting edge of the spiral sampler 13 cuts vertically into the sand layer by 10 cm. The outer ring 124 is rotated, and the inner toothed ring 125 simultaneously drives the three gears 126 to rotate. The three spiral samplers 13 revolve and rotate with the fixed ring 121 as a whole. One action can complete the columnar sampling of 3 points and 15 cm depth. After the reverse rocking, the sampler can be pulled out by loosening the fixing screw 123. The tail push rods of the three spiral samplers 13 are manually pushed to push out the sand column and directly obtain a representative sample. The whole process can be completed by a single person manually cranking the rocker arm 113 without carrying it on the shoulder or by hand. This device integrates in-situ sampling and rapid titration processes into a movable frame, enabling the three spiral samplers 13 to descend and rotate three times simultaneously in one go, quickly completing three-point depth sampling. The titration plate 15 is automatically clamped after being inserted into the placement slot 146, and the LED backlight panel 141 flips to lock in position, providing a constant white light background. Combined with a shaking bottle, needle filter, and AgNO3 titration pen, it efficiently completes sample dissolution, filtration, coarse sieving, and fine titration. It can be moved around by a single person using a trolley, eliminating the need for lifting and repackaging throughout the process, significantly reducing time and saving manpower. Moreover, mechanical depth determination, automatic clamping, and constant backlighting eliminate human error, greatly improving testing accuracy.

[0018] See Figure 1-3 The top of the movable frame 10 is symmetrically fixed with two grip rods 101 and two positioning frames 11. A fixed plate 111 is fixed between the two positioning frames 11. The control plate 14 is fixed to the fixed plate 111. A support frame 114 is slidably connected to one side of the fixed plate 111. The support frame 114 is fixedly connected to the inner ring 12. A one-way screw 112 is rotatably connected inside the fixed plate 111. The one-way screw 112 passes through the support frame 114 and is screwed to it. A rocker arm 113 is fixedly sleeved at the top of the one-way screw 112. The top of the inner ring 12 is rotatably connected to three mounting plates 122, the fixing ring 121 is fixedly connected to the adjacent mounting plates 122, and the outer wall of the fixing ring 121 is screwed with fixing screws 123. An outer ring 124 is rotatably sleeved on the outer wall of the inner ring 12. An inner gear ring 125 is fixedly connected to the top of the outer ring 124. Gears 126 are fixedly sleeved on the outer walls of multiple mounting plates 122, and multiple gears 126 mesh with the inner gear ring 125.

[0019] In practice, the mobile frame 10 is pushed to the side of the material pile, and the rocker arm 113 drives the one-way screw 112 to rotate, causing the support frame 114 and the inner ring 12 to descend as a whole. The cutting edge of the spiral sampler 13 cuts vertically into the sand layer by 10 cm. The outer ring 124 is rotated, and the inner toothed ring 125 simultaneously drives the three gears 126 to rotate. The three spiral samplers 13 revolve and rotate together with the fixed ring 121. One action can complete the columnar sampling of 3 points and 15 cm depth. After the reverse rocking, the sampler can be pulled out by loosening the fixing screw 123. The tail push rods of the three spiral samplers 13 are manually pushed to push out the sand column and directly obtain a representative sample. The whole process can be done by a single person by hand cranking the rocker arm 113, without the need to carry it on the shoulder or by hand.

[0020] See Figure 1-5The top of the control plate 14 is provided with a battery compartment 142. An L-shaped frame 143 is slidably connected inside the control plate 14. The L-shaped frame 143 can be movably engaged with the LED backlight plate 141. A placement groove 146 is opened on the top of the control plate 14. Two card holders 144 are slidably connected on the inner wall of the placement groove 146. The two card holders 144 are symmetrically distributed and can be movably engaged with the titration plate 15. A bidirectional lead screw 145 is rotatably connected inside the control plate 14. The bidirectional lead screw 145 passes through the two card holders 144. The adjacent sections of the card holders 144 and the bidirectional lead screw 145 are screwed together. A storage cabinet 20 is fixedly connected to the outer wall of the fixed plate 111, and a protective frame 21 is fixedly connected to the top of the storage cabinet 20.

[0021] In practice, the titration plate 15 is placed in the placement slot 146, and the bidirectional lead screw 145 is rotated to make the symmetrical clamping bracket 144 retract synchronously, which can clamp the titration plate 15 for positioning and can adapt to titration plates 15 of various specifications. The LED backlight plate 141 is flipped to the horizontal, and the L-shaped bracket 143 is engaged with the LED backlight plate 141 to keep it in a vertical state, forming a stable white background. The battery compartment 142 supplies power to the LED backlight plate 141 to ensure that the brick red endpoint can still be clearly observed under strong outdoor light. At this time, the clarified leachate obtained from the on-site pretreatment has been placed in each cavity of the titration plate. The operator only needs to squeeze the AgNO3 titration pen with one hand to complete the coarse sieving and fine dropping within 2 minutes, which is very convenient to operate.

[0022] Working principle: The movable frame 10 is pushed to the side of the material pile, and the rocker arm 113 drives the one-way screw 112 to rotate, so that the support frame 114 and the inner ring 12 are lowered as a whole; the cutting edge of the spiral sampler 13 cuts vertically into the sand layer by 10 cm, and the outer ring 124 is rotated. The inner toothed ring 125 simultaneously drives the three gears 126 to rotate. The three spiral samplers 13 revolve and rotate with the fixed ring 121 as a whole. One action can complete the columnar sampling of 3 points and 15 cm depth. After the reverse rocking, the fixed screw 123 can be loosened to pull out the sampler. The push rods at the tails of the three spiral samplers 13 are manually pushed to push out the sand column and directly obtain a representative sample. The whole process can be done by a single person by hand cranking the rocker arm 113. There is no need to carry it by hand. This device integrates in-situ sampling and rapid titration processes into a movable frame, enabling the three spiral samplers 13 to descend and rotate three times simultaneously in one go, quickly completing three-point depth sampling. The titration plate 15 is automatically clamped after being inserted into the placement slot 146, and the LED backlight panel 141 flips to lock in position, providing a constant white light background. Combined with a shaking bottle, needle filter, and AgNO3 titration pen, it efficiently completes sample dissolution, filtration, coarse sieving, and fine titration. It can be moved around by a single person using a trolley, eliminating the need for lifting and repackaging throughout the process, significantly reducing time and saving manpower. Moreover, mechanical depth determination, automatic clamping, and constant backlighting eliminate human error, greatly improving testing accuracy.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for in-situ sampling and rapid titration of chloride ion content in building sand, characterized in that, include, A movable frame (10) is slidably connected to an inner ring (12) at its top. Three fixed rings (121) are rotatably connected inside the inner ring (12). A spiral sampler (13) is snapped into the inside of the fixed rings (121). A control plate (14) is fixed to the top of the movable frame (10). The top of the control plate (14) is provided with a placement groove (146) for limiting the position of the titration plate (15). An LED backlight plate (141) is rotatably connected to the top of the control plate (14).

2. The in-situ sampling and rapid titration device for chloride ion content in building sand as described in claim 1, characterized in that: The top of the movable frame (10) is symmetrically fixed with two grips (101) and two positioning frames (11), and a fixing plate (111) is fixed between the two positioning frames (11). The control plate (14) is fixed to the fixing plate (111).

3. The in-situ sampling and rapid titration device for chloride ion content in building sand as described in claim 2, characterized in that: A support frame (114) is slidably connected to one side of the fixed plate (111). The support frame (114) is fixedly connected to the inner ring (12). A one-way screw (112) is rotatably connected inside the fixed plate (111). The one-way screw (112) passes through the support frame (114) and is screwed to it. A rocker arm (113) is fixedly sleeved at the top of the one-way screw (112).

4. The in-situ sampling and rapid titration device for chloride ion content in building sand as described in claim 3, characterized in that: The top of the inner ring (12) is rotatably connected to three mounting plates (122), the fixing ring (121) is fixedly connected to the adjacent mounting plate (122), and a fixing screw (123) is screwed onto the outer wall of the fixing ring (121).

5. The in-situ sampling and rapid titration device for chloride ion content in building sand as described in claim 4, characterized in that: An outer ring (124) is rotatably sleeved on the outer wall of the inner ring (12), and an inner gear ring (125) is fixedly connected to the top of the outer ring (124). Gears (126) are fixedly sleeved on the outer walls of the plurality of mounting plates (122), and the plurality of gears (126) mesh with the inner gear ring (125).

6. The in-situ sampling and rapid titration device for chloride ion content in building sand as described in claim 1, characterized in that: The top of the control plate (14) is provided with a battery compartment (142). An L-shaped frame (143) is slidably connected inside the control plate (14). The L-shaped frame (143) can be movably engaged with the LED backlight plate (141). The top of the control plate (14) is provided with a placement groove (146). Two card holders (144) are slidably connected on the inner wall of the placement groove (146). The two card holders (144) are symmetrically distributed. The card holders (144) can be movably engaged with the titration plate (15). A bidirectional lead screw (145) is rotatably connected inside the control plate (14). The bidirectional lead screw (145) passes through the two card holders (144). The adjacent sections of the card holders (144) are screwed together with the adjacent sections of the bidirectional lead screw (145).

7. The in-situ sampling and rapid titration device for chloride ion content in building sand as described in claim 2, characterized in that: A storage cabinet (20) is fixedly connected to the outer wall of the fixed plate (111), and a protective frame (21) is fixedly connected to the top of the storage cabinet (20).

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