Automatic sampling device for disodium dihydrogen pyrophosphate

Abstract

The utility model discloses an automatic sampling device of disodium dihydrogen pyrophosphate, which comprises a fixed pipe obliquely connected to a vertical material pipe downwards, a connecting pipe coaxially and fixedly connected to a movable end of the fixed pipe, an air cylinder fixed on one side of the connecting pipe in parallel, and a sampling barrel axially arranged in the connecting pipe in a sliding manner, one end of the sampling barrel is connected with the movable end of the air cylinder, the bottom of the connecting pipe is connected with a sample pipe, the outer wall of the sampling barrel is attached to the inner wall of the connecting pipe, the two ends of the sampling barrel are sealed, and the top face of the top end and the bottom face of the bottom end of the sampling barrel are provided with a feeding groove and a discharging groove respectively. The discharging groove is located outside the top end pipe opening of the sample pipe. The effects of reducing the labor intensity of workers, maintaining the production continuity and eliminating the influence of the sampling process on the powder quality are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to an automatic sampling device for disodium dihydrogen pyrophosphate. Background Art

[0002] Currently, manual sampling is commonly used during the packaging process for disodium dihydrogen pyrophosphate powder. As the powder is transported via a pipeline to a baler for packaging, operators manually remove a certain amount of sample from the pipeline, typically using a sampling machine or specialized tools. These samples are then sent to a laboratory for testing, including dryness and purity. The results determine whether the powder meets quality standards.

[0003] However, manual sampling requires operators to frequently interrupt the powder conveying process, which not only increases production time, but also has the possibility of affecting the purity of the powder. In addition, manual sampling requires operators to frequently enter and exit the work area, increasing labor intensity. Summary of the Invention

[0004] The technical problems to be solved by the utility model are that manual sampling has high labor intensity, risks of affecting the purity of powder materials and reducing production efficiency.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an automatic sampling device for disodium dihydrogen pyrophosphate, comprising a fixed tube connected to a vertical material pipe at a downward angle, a connecting tube coaxially fixedly connected to the movable end of the fixed tube, a cylinder fixed parallel to one side of the connecting tube, and a sampling tube axially slidably arranged in the connecting tube, one end of the sampling tube is connected to the movable end of the cylinder, the bottom of the connecting tube is connected to the sample tube, the outer wall of the sampling tube is fitted with the inner wall of the connecting tube, and the two ends of the sampling tube are sealed, the top surface and the bottom surface of the sampling tube are respectively provided with a feed trough and a discharge trough, and when the feed trough is located in the material pipe, the discharge trough is located outside the top end pipe mouth of the sample tube.

[0006] Preferably, a mounting plate is fixedly provided on the outer side of the connecting tube, the cylinder is fixed on the mounting plate, a connecting rod is coaxially fixed to the bottom end of the sampling tube, and the piston end of the cylinder is fixedly connected to the movable end of the connecting rod through an L-shaped piston head.

[0007] Preferably, a sealing ring is fixedly installed on the bottom end of the sampling cylinder, the sealing ring is sleeved on the connecting rod, and the sealing ring fits against the inner wall of the connecting tube.

[0008] Preferably, a flange is provided between the connecting ends of the fixed tube and the connecting tube, and the inner diameter of the flange is equal to the outer diameter of the sampling cylinder.

[0009] Preferably, a push plate is fixedly mounted on the sampling tube, the outer diameter of the push plate is equal to the inner diameter of the fixed tube, and when the feed trough is located in the fixed tube, the push plate contacts the end wall of the flange.

[0010] Preferably, the extension air supply pipe and the contraction air supply pipe of the cylinder are both connected to a second connecting piece, and a solenoid valve for controlling the connection between the external air source and the extension air supply pipe or the contraction air supply pipe is installed on the second connecting piece.

[0011] The utility model provides an automatic sampling device for disodium dihydrogen pyrophosphate. The device comprises the following steps: a fixed tube is obliquely installed on a vertical material pipe, a connecting tube and a sampling barrel are installed through the fixed tube, the sampling barrel is driven into the material pipe by an air cylinder, and powder enters the sampling barrel through a feeding trough. After a set time is reached, the sampling barrel is filled with sample powder, the air cylinder is controlled to pull the sampling barrel, so that the discharge trough of the sampling barrel is connected with the sample pipe, and then the sample enters the sample pipe, completing the sampling. The remote-controlled automatic sampling method replaces manual sampling, thereby improving the sampling efficiency. The sampling process will not affect production, thereby ensuring the continuity of production and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0014] Figure 2 Schematic diagram of the internal structure of an embodiment of the present utility model.

[0015] In the figure: 1. Material pipe; 2. Fixed pipe; 3. Flange; 4. Connecting pipe; 5. Mounting plate; 6. Cylinder; 7. Sample tube; 8. Piston head; 9. Sampling tube; 10. Feed chute; 11. Discharge chute; 12. Push plate; 13. Sealing ring; 14. Connecting rod. DETAILED DESCRIPTION

[0016] like Figure 1 and Figure 2 As shown, the utility model provides an automatic sampling device for disodium dihydrogen pyrophosphate, including a fixed tube 2 connected to a vertical material pipe 1 at a downward angle, a connecting tube 4 coaxially fixedly connected to the movable end of the fixed tube 2, a cylinder 6 fixed in parallel to one side of the connecting tube 4, and a sampling barrel 9 axially slidably arranged in the connecting tube 4, one end of the sampling barrel 9 is connected to the movable end of the cylinder 6, the bottom of the connecting tube 4 is connected to the sample tube 7, the outer wall of the sampling barrel 9 is in contact with the inner wall of the connecting tube 4, and the two ends of the sampling barrel 9 are sealed, the top surface and the bottom surface of the sampling barrel 9 are respectively provided with a feed trough 10 and a discharge trough 11, and when the feed trough 10 is located in the material pipe 1, the discharge trough 11 is located outside the top end of the sample tube 7.

[0017] The material pipe 1 is arranged vertically and the fixed pipe 2 is arranged obliquely. When the powder flows vertically downward along the material pipe 1 , the powder will not enter the fixed pipe 2 . When sampling is needed, the control cylinder 6 is retracted, and the cylinder 6 pushes the sampling tube 9 to slide axially along the connecting tube 4 through the piston end, so that the top end of the sampling tube 9 enters the interior of the material tube 1. At this time, the feeding groove 10 opened on the top of the sampling tube 9 is located in the material tube 1, and the discharge groove 11 at the bottom of the sampling tube 9 is sealed by the connecting tube 4; the powder in the material tube 1 enters the sampling tube 9 through the feeding groove 10. After waiting for the set time, the sampling tube 9 is filled with powder. Then the control cylinder 6 is extended, and the piston end of the cylinder 6 pulls the sampling tube 9 outward to move the feeding groove 10 into the fixed tube 2. The powder in the material tube 1 cannot enter the sampling tube 9 through the feeding groove 10. Moreover, when the feeding groove 10 enters the fixed tube 2, the discharge groove 11 is located directly above the sample tube 7. The powder in the sampling tube 9 enters the sample tube 7 through the discharge groove 11, completing the sampling of the powder.

[0018] like Figure 1 As shown, this is to achieve the fixed installation of the cylinder 6. A mounting plate 5 is fixedly provided on the outside of the connecting tube 4, and the cylinder 6 is fixed to the mounting plate 5. A connecting rod 14 is coaxially fixed to the bottom end of the sampling tube 9. The piston end of the cylinder 6 is fixedly connected to the movable end of the connecting rod 14 via an L-shaped piston head 8. An arc-shaped mounting plate 5 is installed on the outside of the connecting tube 4, and the movable end of the mounting plate 5 is fixedly connected to the mounting plate. The end of the cylinder 6 is fixed to the mounting plate via bolts. The cylinder 6 is arranged parallel to the connecting tube 4. When the piston end of the cylinder 6 is extended or retracted, it can pull or push the sampling tube 9 to move.

[0019] like Figure 2 As shown, to ensure a tight seal between the sampling cylinder 9 and the connecting tube 4, a sealing ring 13 is fixedly mounted at the bottom end of the sampling cylinder 9. The sealing ring 13 is mounted on the connecting rod 14 and fits in contact with the inner wall of the connecting tube 4. Since it is difficult to ensure a perfect fit between the connecting tube 4 and the sampling cylinder 9, the sealing ring 13 is installed at the bottom end of the sampling cylinder 9. If powder leaks, the powder can directly enter the sample tube 7 without causing waste, and the powder cannot flow out of the tube opening at the bottom end of the connecting tube 4.

[0020] like Figure 1 and Figure 2 As shown, to facilitate a stable connection between the fixed tube 2 and the connecting tube 4, a flange 3 is provided between the connecting ends of the fixed tube 2 and the connecting tube 4. The inner diameter of the flange 3 is equal to the outer diameter of the sampling tube 9. A sealing ring is also installed between the two flanges 3. The sealing ring cooperates with the sampling tube 9 to further improve the sealing between the sampling tube 9 and the connecting tube 4.

[0021] like Figure 2 As shown, in order to avoid the presence of powder residue in the fixed tube 2, a push plate 12 is fixedly installed on the sampling tube 9. The outer diameter of the push plate 12 is equal to the inner diameter of the fixed tube 2, and when the feed trough 10 is located in the fixed tube 2, the push plate 12 contacts the end wall of the flange 3. When using the sampling tube 9 to sample powder, it is inevitable that some powder will fall into the fixed tube 2. By setting the push plate 12, when the sampling tube 9 is extended into the material tube 1 during the next powder sampling, the push plate 12 can push down the powder remaining in the fixed tube 2, and at the same time, it can reduce the powder from entering the fixed tube 2 after hitting the sampling tube 9 by blocking.

[0022] As a preferred embodiment of the present invention, the extension and retraction air supply pipes of the cylinder 6 are both connected to a two-way connecting piece, which is equipped with a solenoid valve that controls the connection between an external air source and the extension or retraction air supply pipe. Remotely controlling the opening and closing of the solenoid valve, and thereby controlling the connection between the external air supply pipe and the extension or retraction air supply pipe, enables remote control of the extension or retraction of the cylinder 6.

Claims

1. An automatic sampling device for disodium dihydrogen pyrophosphate, characterized in that: The invention comprises a fixed tube (2) connected to a vertical material tube (1) in a downwardly inclined manner, a connecting tube (4) fixedly connected to the movable end of the fixed tube (2) in a coaxial manner, a cylinder (6) fixed in parallel to one side of the connecting tube (4), and a sampling tube (9) arranged in an axially sliding manner in the connecting tube (4), one end of the sampling tube (9) is connected to the movable end of the cylinder (6), the bottom of the connecting tube (4) is connected to the sample tube (7), the outer wall of the sampling tube (9) is in contact with the inner wall of the connecting tube (4), and the two ends of the sampling tube (9) are sealed, and the top surface and the bottom surface of the sampling tube (9) are respectively provided with a feed trough (10) and a discharge trough (11), and when the feed trough (10) is located in the material tube (1), the discharge trough (11) is located outside the top end of the sample tube (7).

2. The automatic sampling device for disodium dihydrogen pyrophosphate according to claim 1, wherein: A mounting plate (5) is fixedly provided on the outer side of the connecting tube (4), the cylinder (6) is fixed on the mounting plate (5), a connecting rod (14) is coaxially fixed to the bottom end of the sampling tube (9), and the piston end of the cylinder (6) is fixedly connected to the movable end of the connecting rod (14) via an L-shaped piston head (8).

3. The automatic sampling device for disodium dihydrogen pyrophosphate according to claim 2, wherein: A sealing ring (13) is fixedly mounted on the bottom end of the sampling tube (9), and the sealing ring (13) is sleeved on the connecting rod (14). The sealing ring (13) fits the inner wall of the connecting tube (4).

4. The automatic sampling device for disodium dihydrogen pyrophosphate according to claim 1, wherein: A flange (3) is provided between the connection ends of the fixed tube (2) and the connecting tube (4), and the inner diameter of the flange (3) is equal to the outer diameter of the sampling cylinder (9).

5. The automatic sampling device for disodium dihydrogen pyrophosphate according to claim 4, characterized in that: A push plate (12) is fixedly mounted on the sampling tube (9), the outer diameter of the push plate (12) being equal to the inner diameter of the fixed tube (2), and when the feed trough (10) is located in the fixed tube (2), the push plate (12) contacts the end wall of the flange (3).

6. An automatic sampling device for disodium dihydrogen pyrophosphate according to any one of claims 1 to 5, characterized in that: The extension air supply pipe and the contraction air supply pipe of the cylinder (6) are both connected to a second connecting piece, and a solenoid valve for controlling the connection between an external air source and the extension air supply pipe or the contraction air supply pipe is installed on the second connecting piece.

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