A sampling device for detecting concentration of water reducing agent

Abstract

The utility model discloses a water reducing agent concentration detects with sampling device, including empty cylinder, the empty cylinder outer surface fixedly connected with the connecting box, and the empty cylinder top insertion has the piston rod, and the connecting box is away from the piston rod one side and is equipped with the window, and the piston rod bottom fixedly connected with the piston main part, and the connecting box inside slide connection has the ration sampling mechanism, and the connecting box one side fixedly connected with the check valve mechanism, and the ration sampling mechanism includes the extrusion board, rubber block, spring no.

Description

Technical Field

[0001] This utility model relates to the field of water-reducing agent sampling technology, and in particular to a sampling device for detecting the concentration of water-reducing agents. Background Technology

[0002] In existing technologies, water-reducing agents are a type of admixture widely used in concrete engineering. Their core function is to reduce the agglomeration force between cement particles by adsorbing onto the surface of the particles, thereby significantly reducing the amount of mixing water while keeping the concrete slump basically unchanged, or greatly improving the fluidity of the concrete with the same amount of water.

[0003] A search revealed a utility model patent with Chinese patent publication number CN221898854U, which discloses a sampling tool for water-reducing agents. The tool includes a sampling cylinder, a sampling bottle, a sealing ball, and a counterweight assembly. One end of the sampling cylinder is screwed to a sampling bottle via a threaded interface. A counterweight tube is fixed to the lower part of the outer circumference of the sampling cylinder. A sealing ball is placed inside the sampling cylinder, and a control rope is fixedly threaded through the surface of the sealing ball. A traction rope is fixed to the top of the outer circumference of the sampling cylinder. The counterweight assembly includes a screw screwed into the counterweight tube, with a conical head fixed to the bottom end of the screw. A counterweight block is also fitted onto the outer circumference of the screw outside the counterweight tube. This utility model, by incorporating a sampling cylinder, sampling bottle, traction rope, control rope, and counterweight assembly, solves the problems of high cost, cumbersome operation, and inability to accurately determine the sampling depth caused by using multiple tools for sampling; as well as the limitations of the sampling method and the rigidity of the sampling structure due to the inability to flexibly sample based on the sampling port position. Although the sampling tool for water-reducing agent in the above-mentioned utility model can flexibly sample according to the sampling port position, the sampling amount depends on the liquid inflow time after the sealing ball leaves the sampling tube. It has no mechanical fixed-stroke structure and is easily affected by liquid surface fluctuations and liquid viscosity, resulting in low quantitative accuracy. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a sampling device for detecting the concentration of water-reducing agents.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sampling device for detecting the concentration of water-reducing agent includes an empty cylinder, a connecting box fixedly connected to the outer surface of the empty cylinder, a piston rod inserted into the top of the empty cylinder, a viewing window opened on the side of the connecting box away from the piston rod, a piston body fixedly connected to the bottom of the piston rod, a quantitative sampling mechanism slidably connected inside the connecting box, and a check mechanism fixedly connected to one side of the connecting box.

[0007] As a further embodiment of this utility model: the quantitative sampling mechanism includes a squeezing plate, a rubber block, a spring and a connecting plate, and a groove is provided on the outer surface of the empty cylinder.

[0008] As a further embodiment of this utility model: the connecting plate is fixedly connected to one side of the piston rod, and the connecting plate slides in cooperation with the sliding groove, and the extrusion plate is fixedly connected to one side of the connecting plate.

[0009] As a further embodiment of this utility model: the extrusion plate slides in cooperation with the inside of the connecting box, the rubber block is fixedly connected to the bottom of the extrusion plate, and the spring is fixedly connected to the inside of the connecting box.

[0010] As a further embodiment of this utility model: the anti-return mechanism includes an extension plate, a rack, a bracket, a gear, a ratchet, a pawl, and a spring, and the extension plate is fixedly connected to the outer surface of the extrusion plate.

[0011] As a further embodiment of this utility model: the rack is fixedly connected to one side of the extrusion plate, the bracket is fixedly connected to one side of the connecting box, the gear is rotatably connected to both sides of the bracket, and the gear meshes with the rack.

[0012] As a further embodiment of this utility model: the ratchet is rotatably connected to one side of the bracket, and the ratchet is fixedly connected to the gear; the pawl is rotatably connected to one side of the bracket, and the pawl meshes with the ratchet; the second spring is fixedly connected to one side of the pawl, and the second spring is fixedly connected to the bracket.

[0013] Compared with the prior art, the present invention provides a sampling device for detecting the concentration of water-reducing agent, which has the following beneficial effects:

[0014] This sampling device for detecting the concentration of water-reducing agents involves pressing a piston rod before testing. The piston rod moves the piston body inside the empty cylinder, expelling air and simultaneously pressing the quantitative sampling mechanism. Throughout this process, a check mechanism prevents the quantitative sampling mechanism from resetting. The distance the piston body has moved is determined by observing the viewing window and the scale lines near the window. When the required sample volume is reached, the piston rod is released, and the bottom of the sampling device is inserted into the water-reducing agent. The check mechanism is then released, and the quantitative sampling mechanism slowly pushes the piston rod back to its original position, allowing the water-reducing agent to enter the empty cylinder. This method enables precise sampling, avoids sudden displacement caused by hand tremors or external interference during pressing, ensures the sample volume is determined solely by the target scale, and provides stable suction.

[0015] This sampling device for detecting the concentration of water-reducing agent involves the operator pressing a piston rod before sampling. The piston rod drives a connecting plate to slide within a groove on the outer surface of the empty cylinder, which in turn pushes a squeezing plate to slide within a connecting box. During this process, the squeezing plate compresses a spring, storing its elastic potential energy. Simultaneously, a rubber block moves with the squeezing plate. By observing the viewing window and scale lines, the distance the piston body moves is determined. When the required sampling amount is reached, pressing the piston rod stops. At this point, the spring remains compressed, and the bottom of the device is inserted into the water-reducing agent. The locking mechanism of the check valve is released, and the spring releases its elastic potential energy, pushing the squeezing plate to reset. The squeezing plate, through the connecting plate, drives the piston rod upward, creating a negative pressure inside the empty cylinder. The water-reducing agent is then drawn into the empty cylinder. During this process, the rubber block rubs against the inside of the connecting box, slowing down the reset speed of the spring pushing the squeezing plate, stabilizing the negative pressure inside the empty cylinder, and ensuring the accuracy of the extraction amount. This ensures a stable and continuous reset force, guaranteeing reliable piston rod reset and making the sampling amount accurate and controllable.

[0016] This sampling device for detecting the concentration of water-reducing agents features a rack that moves downwards with the squeezing plate when the squeezing plate is pressed. The rack meshes with a gear, causing the gear to rotate on the support. Simultaneously, the gear's rotation drives a ratchet to rotate synchronously. The pawl, under the action of spring two, remains engaged with the ratchet, allowing unidirectional rotation. When sampling is required, the sampling device is inserted into the water-reducing agent. The operator holds the empty cylinder with one hand and uses the other hand to move the pawls on both sides to disengage them from the ratchet. At this point, spring one releases its elastic potential energy, pushing the squeezing plate upwards to reset. This effectively avoids sampling deviations caused by human factors or external interference, ensuring that each sample meets the testing requirements. Multiple devices can be pre-set with their absorption rates; during sampling, simply moving spring two is sufficient, improving work efficiency.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1 This is a front view of a sampling device for detecting the concentration of water-reducing agent proposed in this utility model;

[0019] Figure 2 This is an exploded view of a sampling device for detecting the concentration of water-reducing agent proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the quantitative sampling mechanism in a sampling device for detecting the concentration of water-reducing agent proposed in this utility model;

[0021] Figure 4 An exploded view of the quantitative sampling mechanism in a sampling device for detecting the concentration of water-reducing agent proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the check valve mechanism in a sampling device for detecting the concentration of water-reducing agent proposed in this utility model.

[0023] In the diagram: 1. Empty cylinder; 2. Connecting box; 3. Quantitative sampling mechanism; 4. Check mechanism; 5. Piston rod; 6. Piston body; 301. Extrusion plate; 302. Rubber block; 303. Spring 1; 304. Connecting plate; 401. Extension plate; 402. Rack; 403. Bracket; 404. Gear; 405. Ratchet; 406. Pawl; 407. Spring 2. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] A sampling device for detecting the concentration of water-reducing agent, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it includes an empty cylinder 1, a connecting box 2 fixedly connected to the outer surface of the empty cylinder 1, a piston rod 5 inserted into the top of the empty cylinder 1, a viewing window opened on the side of the connecting box 2 away from the piston rod 5, a piston body 6 fixedly connected to the bottom of the piston rod 5, a quantitative sampling mechanism 3 slidably connected inside the connecting box 2, and a check mechanism 4 fixedly connected to one side of the connecting box 2.

[0028] Before testing the concentration of the water-reducing agent, press the piston rod 5. At this time, the piston rod 5 drives the piston body 6 to move inside the empty cylinder 1, and the air inside the empty cylinder 1 is discharged outward.

[0029] At the same time, the piston rod 5 squeezes the quantitative sampling mechanism 3. During this process, the check mechanism 4 always prevents the quantitative sampling mechanism 3 from resetting. The distance the piston body 6 moves is judged by observing the viewing window and the scale line near the viewing window. When the required sampling amount is reached, the squeezing of the piston rod 5 is released.

[0030] Next, the bottom of the sampling device is inserted into the water-reducing agent, and the locking of the check mechanism 4 is released. At this time, the quantitative sampling mechanism 3 slowly pushes the piston rod 5 to reset. The water-reducing agent enters the empty cylinder 1. Thus, accurate sampling can be achieved, avoiding sudden displacement caused by hand shaking or external force interference during the pressing process, ensuring that the sampling amount is determined only by the target scale, and stable suction can be achieved.

[0031] In order to take samples of the water-reducing agent, such as Figure 3 and Figure 4 As shown, the quantitative sampling mechanism 3 includes a squeezing plate 301, a rubber block 302, a spring 303, and a connecting plate 304. A groove is provided on the outer surface of the empty cylinder 1. The connecting plate 304 is fixedly connected to one side of the piston rod 5 and slides with the groove. The squeezing plate 301 is fixedly connected to one side of the connecting plate 304 and slides with the inside of the connecting box 2. The rubber block 302 is fixedly connected to the bottom of the squeezing plate 301, and the spring 303 is fixedly connected to the inside of the connecting box 2.

[0032] Before sampling, the operator presses the piston rod 5, which drives the connecting plate 304 to slide in the groove on the outer surface of the empty cylinder 1, thereby pushing the extrusion plate 301 to slide in the connecting box 2. During this process, the extrusion plate 301 extrudes the spring 303, compressing it and storing elastic potential energy. At the same time, the rubber block 302 moves with the extrusion plate 301.

[0033] By observing the viewing window and scale lines, the movement distance of the piston body 6 is determined. When the required sampling amount is reached, the piston rod 5 is stopped from being pressed. At this time, the spring 303 remains in a compressed state.

[0034] Insert the bottom of the device into the water-reducing agent, release the lock of the check mechanism 4, and the spring 303 releases its elastic potential energy, pushing the extrusion plate 301 to reset. The extrusion plate 301 drives the piston rod 5 to move upward through the connecting plate 304, forming a negative pressure inside the empty cylinder 1. The water-reducing agent is drawn into the empty cylinder 1. During this process, the rubber block 302 rubs against the inside of the connecting box 2, slowing down the reset speed of the extrusion plate 301 pushed by the spring 303, stabilizing the negative pressure inside the empty cylinder 1, and thus ensuring the accuracy of the extraction volume. This ensures a stable and continuous reset force, guarantees the reliable reset of the piston rod 5, and makes the sampling volume accurate and controllable.

[0035] To control the quantitative sampling mechanism 3, as shown in the check mechanism 4, the check mechanism 4 includes an extension plate 401, a rack 402, a bracket 403, a gear 404, a ratchet 405, a pawl 406, and a second spring 407. The extension plate 401 is fixedly connected to the outer surface of the extrusion plate 301, the rack 402 is fixedly connected to one side of the extrusion plate 301, the bracket 403 is fixedly connected to one side of the connecting box 2, the gear 404 is rotatably connected to both sides of the bracket 403 and meshes with the rack 402, the ratchet 405 is rotatably connected to one side of the bracket 403 and is fixedly connected to the gear 404, the pawl 406 is rotatably connected to one side of the bracket 403 and meshes with the ratchet 405, and the second spring 407 is fixedly connected to one side of the pawl 406 and is fixedly connected to the bracket 403.

[0036] When the extrusion plate 301 is pressed, the rack 402 moves downward with the extrusion plate 301. Since the rack 402 meshes with the gear 404, the movement of the rack 402 drives the gear 404 to rotate on the bracket 403.

[0037] At the same time, the rotation of gear 404 drives ratchet 405 to rotate synchronously, and pawl 406, under the action of spring 407, is always engaged with ratchet 405, allowing ratchet 405 to rotate in one direction.

[0038] When sampling is required, the sampling device is inserted into the water-reducing agent. The operator holds the empty cylinder 1 with one hand and moves the two pawls 406 on both sides with the other hand to separate them from the ratchet 405. At this time, the spring 303 releases its elastic potential energy and pushes the squeeze plate 301 to return to its original position. This effectively avoids sampling deviation caused by human factors or external interference, ensuring that the amount of each sample meets the testing requirements. At the same time, multiple devices can be preset with their absorption amounts. Then, during the sampling process, only the spring 407 needs to be moved to achieve sampling, which improves work efficiency.

[0039] Working principle: Before testing the concentration of water-reducing agent, press the piston rod 5. At this time, the piston rod 5 drives the piston body 6 to move inside the empty cylinder 1, and the air in the empty cylinder 1 is discharged outward.

[0040] At the same time, the piston rod 5 squeezes the quantitative sampling mechanism 3. During this process, the check mechanism 4 always prevents the quantitative sampling mechanism 3 from resetting. The distance the piston body 6 moves is judged by observing the viewing window and the scale line near the viewing window. When the required sampling amount is reached, the squeezing of the piston rod 5 is released.

[0041] Next, the bottom of the sampling device is inserted into the water-reducing agent, and the locking of the check mechanism 4 is released. At this time, the quantitative sampling mechanism 3 slowly pushes the piston rod 5 to reset, and the water-reducing agent enters the interior of the empty cylinder 1.

[0042] Before sampling, the operator presses the piston rod 5, which drives the connecting plate 304 to slide in the groove on the outer surface of the empty cylinder 1, thereby pushing the extrusion plate 301 to slide in the connecting box 2. During this process, the extrusion plate 301 extrudes the spring 303, compressing it and storing elastic potential energy. At the same time, the rubber block 302 moves with the extrusion plate 301.

[0043] By observing the viewing window and scale lines, the movement distance of the piston body 6 is determined. When the required sampling amount is reached, the piston rod 5 is stopped from being pressed. At this time, the spring 303 remains in a compressed state.

[0044] Insert the bottom of the device into the water-reducing agent, release the lock of the check mechanism 4, and the spring 303 releases its elastic potential energy, pushing the extrusion plate 301 to reset. The extrusion plate 301 drives the piston rod 5 to move upward through the connecting plate 304, forming a negative pressure inside the empty cylinder 1. The water-reducing agent is drawn into the empty cylinder 1. During this process, the rubber block 302 rubs against the inside of the connecting box 2, slowing down the reset speed of the extrusion plate 301 pushed by the spring 303, stabilizing the negative pressure inside the empty cylinder 1, and thus ensuring the accuracy of the extraction volume.

[0045] When the extrusion plate 301 is pressed, the rack 402 moves downward with the extrusion plate 301. Since the rack 402 meshes with the gear 404, the movement of the rack 402 drives the gear 404 to rotate on the bracket 403.

[0046] At the same time, the rotation of gear 404 drives ratchet 405 to rotate synchronously, and pawl 406, under the action of spring 407, is always engaged with ratchet 405, allowing ratchet 405 to rotate in one direction.

[0047] When sampling is required, the sampling device is inserted into the water-reducing agent. The operator holds the empty cylinder 1 with one hand and moves the pawls 406 on both sides with the other hand to separate them from the ratchet 405. At this time, the spring 303 releases its elastic potential energy and pushes the extrusion plate 301 to reset upward.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sampling device for detecting the concentration of water-reducing agent, comprising an empty cylinder (1), characterized in that, A connecting box (2) is fixedly connected to the outer surface of the empty cylinder (1). A piston rod (5) is inserted into the top of the empty cylinder (1). A viewing window is opened on the side of the connecting box (2) away from the piston rod (5). A piston body (6) is fixedly connected to the bottom of the piston rod (5). A quantitative sampling mechanism (3) is slidably connected inside the connecting box (2). A check mechanism (4) is fixedly connected to one side of the connecting box (2).

2. The sampling device for detecting water-reducing agent concentration according to claim 1, characterized in that, The quantitative sampling mechanism (3) includes a squeezing plate (301), a rubber block (302), a spring (303) and a connecting plate (304), and a groove is provided on the outer surface of the empty cylinder (1).

3. The sampling device for detecting water-reducing agent concentration according to claim 2, characterized in that, The connecting plate (304) is fixedly connected to one side of the piston rod (5), and the connecting plate (304) slides in cooperation with the slide groove. The extrusion plate (301) is fixedly connected to one side of the connecting plate (304).

4. A sampling device for detecting the concentration of water-reducing agent according to claim 2, characterized in that, The extrusion plate (301) slides in cooperation with the inside of the connecting box (2), the rubber block (302) is fixedly connected to the bottom of the extrusion plate (301), and the spring (303) is fixedly connected to the inside of the connecting box (2).

5. A sampling device for detecting the concentration of water-reducing agent according to claim 1, characterized in that, The check mechanism (4) includes an extension plate (401), a rack (402), a bracket (403), a gear (404), a ratchet (405), a pawl (406), and a second spring (407), and the extension plate (401) is fixedly connected to the outer surface of the compression plate (301).

6. A sampling device for detecting the concentration of water-reducing agent according to claim 5, characterized in that, The rack (402) is fixedly connected to one side of the extrusion plate (301), the bracket (403) is fixedly connected to one side of the connecting box (2), and the gear (404) is rotatably connected to both sides of the bracket (403). The gear (404) meshes with the rack (402).

7. A sampling device for detecting the concentration of water-reducing agent according to claim 5, characterized in that, The ratchet (405) is rotatably connected to one side of the bracket (403), and the ratchet (405) is fixedly connected to the gear (404). The pawl (406) is rotatably connected to one side of the bracket (403), and the pawl (406) meshes with the ratchet (405). The second spring (407) is fixedly connected to one side of the pawl (406), and the second spring (407) is fixedly connected to the bracket (403).

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