Sample extraction device for detecting aliphatic water reducer

Abstract

The sample extraction device comprises a shell, a sampling barrel is embedded in the bottom of the shell, an electric push rod is installed on the top of the shell, a piston rod of the electric push rod penetrates through the sampling barrel and is fixedly connected with a piston head, and the piston head is fixedly connected with the shell. An annular scraping plate is slidably mounted in the sampling barrel, the outer wall of the annular scraping plate is conical, the bottom of the annular scraping plate is fixedly connected with a spring, one end of the bottom of the spring is fixedly connected to the inner wall of the bottom of the sampling barrel, and the bottom of the sampling barrel is in threaded connection with a sealing end cover; during sampling, the electric push rod drives the piston rod to push the piston head to move up and down in the sampling barrel so as to extract and discharge the aliphatic water reducer, and simultaneously drives the annular scraper to move up and down, so that the outer wall of the annular scraper is in close contact with the inner wall of the sampling barrel, residual samples are scraped, the barrel wall is ensured to be clean and tidy, and the sample extraction quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling of aliphatic water reducing agents, and specifically, to a sample extraction device for detecting aliphatic water reducing agents. Background Art

[0002] Aliphatic water reducing agent is a chemical additive used in concrete, and its main component is aliphatic polycarboxylic acid. By dispersing cement particles and reducing the water-cement ratio in concrete, aliphatic water reducing agent improves the workability and mechanical properties of concrete, thereby enhancing the fluidity of concrete, reducing the water consumption, increasing the strength and durability of concrete, and reducing the risk of shrinkage and cracking.

[0003] However, when the existing sample extraction device extracts aliphatic water reducing agent, part of the sample often remains on the inner wall of the sample extraction device and is difficult to clean thoroughly. For example, after sampling the aliphatic water reducing agent with a relatively high viscosity, it will adhere to the inner wall of the sampling cylinder, resulting in easy contamination of the sampling equipment during re-use, which not only affects the purity of the new sample and the analysis results, but also increases the difficulty of equipment cleaning and maintenance. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art.

[0005] For this purpose, an object of the utility model is to provide a sample extraction device for detecting aliphatic water reducing agents, and the sample extraction device for detecting aliphatic water reducing agents can (abbreviated beneficial effect).

[0006] To achieve the above object, the utility model provides the following technical solution: A sample extraction device for detecting aliphatic water reducing agents, including a housing, a sampling cylinder is embedded at the bottom of the housing; an electric push rod is installed at the top of the housing, the piston rod of the electric push rod penetrates through the sampling cylinder and is fixedly connected with a piston head, an annular scraper is slidably installed inside the sampling cylinder, the outer wall of the annular scraper is conical, a spring is fixedly connected to the bottom of the annular scraper, one end of the bottom of the spring is fixedly connected to the inner wall of the bottom of the sampling cylinder, the bottom of the sampling cylinder is threadedly connected with a sealing end cover, and a through hole is provided at the center of the bottom of the sealing end cover.

[0007] Preferably, a sampling tube is communicated inside the through hole at the center of the bottom of the sealing end cover.

[0008] Preferably, two fixing rods are symmetrically and fixedly connected inside the sampling cylinder, and the fixing rods penetrate through the piston head and the annular scraper.

[0009] Preferably, a top shell is installed at the top of the sampling cylinder, and the electric push rod is located inside the top shell.

[0010] Preferably, two connecting plates are symmetrically installed on the outer wall of the housing.

[0011] Preferably, an observation window is embedded in the outer wall of the sampling cylinder.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: When sampling with the present utility model, the electric push rod drives the piston rod to push the piston head to move up and down in the sampling cylinder, sucking and discharging aliphatic water reducer, and at the same time driving the annular scraper to move up and down, so that the outer wall of the annular scraper is in close contact with the inner wall of the sampling cylinder, scraping off the residual samples, ensuring the cleanliness of the cylinder wall, and improving the quality of sample extraction. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of a sample extraction device for aliphatic water reducer detection according to an embodiment of the present utility model;

[0014] Figure 2 is a schematic structural diagram of a sampling cylinder in a sample extraction device for aliphatic water reducer detection according to an embodiment of the present utility model;

[0015] Figure 3 is an embodiment of the present utility model Figure 1 an enlarged schematic structural diagram of part A;

[0016] Figure 4 is a schematic structural diagram of an annular scraper in a sample extraction device for aliphatic water reducer detection according to an embodiment of the present utility model.

[0017] In the figure: 1, housing; 2, electric push rod; 3, sampling cylinder; 4, piston head; 5, spring; 6, sampling tube; 7, sealing end cap; 8, connecting plate; 9, top shell; 10, observation window; 11, fixed rod; 12, annular scraper. Detailed Embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1 - 2 , the embodiments of the present utility model provide a sample extraction device for aliphatic water reducer detection, including: a housing 1 and a sampling cylinder 3.

[0020] Among them, as Figure 1As shown, the sampling cylinder 3 is embedded at the bottom of the outer shell 1. An electric push rod 2 is installed at the top of the outer shell 1. The piston rod of the electric push rod 2 penetrates through the sampling cylinder 3 and is fixedly connected to a piston head 4. The bottom of the sampling cylinder 3 is threadedly connected to a sealing end cover 7, and a through hole is provided at the center of the bottom of the sealing end cover 7.

[0021] During sampling, the through hole of the sealing end cover 7 at the bottom of the sampling cylinder 3 is located in the aliphatic water reducer. By starting the electric push rod 2 to drive the piston rod to push the piston head 4 to move downward in the sampling cylinder 3, and when the piston rod pulls the piston head 4 to move upward and reset, a negative pressure is formed in the sampling cylinder 3 to extract the aliphatic water reducer, thus completing the sample extraction.

[0022] Further, referring to Figure 2 , a sampling tube 6 is connected and communicated inside the through hole at the center of the bottom of the sealing end cover 7. The sampling tube 6 can further penetrate into the storage tank storing the aliphatic water reducer for sampling.

[0023] To facilitate the operator to observe the sampling amount in the sampling cylinder 3, an observation window 10 is embedded on the outer wall of the sampling cylinder 3

[0024] In this embodiment, as Figures 1 - 4 shown, an annular scraping plate 12 is slidably installed inside the sampling cylinder 3. The outer wall of the annular scraping plate 12 is conical. A spring 5 is fixedly connected to the bottom of the annular scraping plate 12, and one end of the bottom of the spring 5 is fixedly connected to the inner wall of the bottom of the sampling cylinder 3.

[0025] When the piston head 4 moves downward, it can push the annular scraping plate 12 to move downward. When the piston head 4 resets upward, the spring 5 can automatically push the annular scraping plate 12 to reset upward. During the up and down movement of the annular scraping plate 12, the conical outer wall is in close contact with the inner wall of the sampling cylinder 3 to scrape off the residual sample on the cylinder wall

[0026] In this embodiment, as Figure 1 shown, two fixing rods 11 are symmetrically and fixedly connected inside the sampling cylinder 3. The fixing rods 11 penetrate through the piston head 4 and the annular scraping plate 12, and the fixing rods 11 can stabilize the moving states of the piston head 4 and the annular scraping plate 12.

[0027] As Figure 1 shown, a top shell 9 is installed at the top of the sampling cylinder 3. The electric push rod 2 is located inside the top shell 9, and the top shell 9 can play a role in covering and protecting the electric push rod 2.

[0028] Specifically, two connecting plates 8 are symmetrically installed on the outer wall of the outer shell 1. The connecting plates 8 and the fixing parts can install the outer shell 1 on the production pipeline of the aliphatic water reducer, facilitating the fixation of the sampling position.

[0029] Summarize and sort out the working steps of this solution according to the above technical solution: When sampling in this utility model, the through hole of the bottom sealing end cover 7 of the sampling cylinder 3 is located in the aliphatic water reducer. By starting the electric push rod 2 to drive the piston rod to push the piston head 4 to move downward in the sampling cylinder 3, and when the piston rod pulls the piston head 4 to move upward and reset, a negative pressure is formed in the sampling cylinder 3 to extract the aliphatic water reducer, thereby completing the sample extraction.

[0030] Among them, when the piston head 4 moves downward, it can push the annular scraper 12 to move downward. When the piston head 4 resets upward, the spring 5 can automatically push the annular scraper 12 to reset upward. During the up and down movement of the annular scraper 12, the conical outer wall is in close contact with the inner wall of the sampling cylinder 3, scraping off the residual sample on the cylinder wall, ensuring the cleanliness of the inner wall of the sampling cylinder 3, and improving the quality during subsequent sample extraction.

[0031] Parts not involved in this utility model are the same as the prior art or can be implemented using the prior art. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A sample extraction device for detecting aliphatic water reducing agent, comprising a housing (1), a sampling tube (3) being embedded at the bottom of the housing (1), characterized in that: An electric push rod (2) is installed on the top of the housing (1), the piston rod of the electric push rod (2) passes through the sampling barrel (3) and is fixedly connected to a piston head (4), an annular scraper (12) is slidably installed inside the sampling barrel (3), the outer wall of the annular scraper (12) is conical, the bottom of the annular scraper (12) is fixedly connected to a spring (5), one end of the bottom of the spring (5) is fixedly connected to the bottom inner wall of the sampling barrel (3), the bottom of the sampling barrel (3) is threadedly connected to a sealing end cover (7), and a through hole is provided at the center of the bottom of the sealing end cover (7).

2. A sample extraction device for aliphatic water reducing agent detection according to claim 1, characterized in that: A sampling tube (6) is connected to the bottom center of the sealing end cover (7) and located inside the through hole.

3. A sample extraction device for aliphatic water reducing agent detection according to claim 1, characterized in that: Two fixing rods (11) are symmetrically fixedly connected inside the sampling cylinder (3), and the fixing rods (11) penetrate the piston head (4) and the annular scraper (12).

4. A sample extraction device for aliphatic water reducing agent detection according to claim 1, characterized in that: A top shell (9) is installed on the top of the sampling tube (3), and the electric push rod (2) is located inside the top shell (9).

5. A sample extraction device for aliphatic water reducing agent detection according to claim 1, characterized in that: Two connecting plates (8) are symmetrically mounted on the outer wall of the housing (1).

6. A sample extraction device for aliphatic water reducing agent detection according to claim 1, characterized in that: An observation window (10) is embedded in the outer wall of the sampling tube (3).

Images